/* roulang page: index */
:root {
            --bf-green: #1B5E20;
            --bf-green-dark: #0F3D13;
            --bf-green-darker: #16281A;
            --bf-orange: #FF7A00;
            --bf-orange-hover: #E66D00;
            --bf-lime: #C6E900;
            --bf-bg: #F5F3EE;
            --bf-bg-green: #F4F7F2;
            --bf-text: #1A1E1A;
            --bf-text-secondary: #5A625A;
            --bf-text-muted: #7A827A;
            --bf-card: #FFFFFF;
            --bf-border: #E0E4DE;
            --bf-border-green: rgba(27, 94, 32, 0.18);
            --bf-shadow-sm: 0 2px 8px rgba(27, 94, 32, 0.06);
            --bf-shadow-md: 0 4px 16px rgba(27, 94, 32, 0.08);
            --bf-shadow-lg: 0 8px 24px rgba(27, 94, 32, 0.14);
            --bf-radius-sm: 8px;
            --bf-radius-md: 12px;
            --bf-radius-lg: 16px;
            --bf-radius-full: 999px;
            --bf-radius-input: 10px;
            --bf-font-mono: 'Roboto Mono', 'SF Mono', 'Menlo', 'Consolas', monospace;
            --bf-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --bf-gutter: 24px;
            --bf-section-gap: 56px;
            --bf-transition: 0.2s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--bf-font-sans);
            color: var(--bf-text);
            background-color: var(--bf-bg);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--bf-green);
            text-decoration: none;
            transition: color var(--bf-transition);
        }

        a:hover {
            color: var(--bf-orange);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--bf-font-sans);
            font-size: 16px;
        }

        /* Container */
        .bf-container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 768px) {
            .bf-container {
                padding-left: 28px;
                padding-right: 28px;
            }
        }

        @media (min-width: 1200px) {
            .bf-container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        /* Header */
        .bf-header {
            background: var(--bf-green-dark);
            border-bottom: 3px solid var(--bf-orange);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
        }

        .bf-header-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 12px 20px;
        }

        .bf-logo {
            font-size: 24px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.2;
        }

        .bf-logo:hover {
            color: var(--bf-lime);
        }

        .bf-logo-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            background: var(--bf-orange);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            line-height: 1;
        }

        .bf-header-search {
            flex: 1 1 280px;
            min-width: 200px;
            max-width: 420px;
            position: relative;
            display: flex;
            align-items: center;
        }

        .bf-header-search input {
            width: 100%;
            padding: 10px 16px 10px 44px;
            border-radius: var(--bf-radius-full);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color var(--bf-transition), box-shadow var(--bf-transition), background var(--bf-transition);
        }

        .bf-header-search input::placeholder {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
        }

        .bf-header-search input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198, 233, 0, 0.15), 0 0 0 5px rgba(255, 122, 0, 0.1);
            background: rgba(255, 255, 255, 0.16);
        }

        .bf-search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            pointer-events: none;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
        }

        .bf-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .bf-nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--bf-radius-sm);
            transition: color var(--bf-transition), background var(--bf-transition);
            white-space: nowrap;
        }

        .bf-nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        .bf-nav-link.active {
            color: var(--bf-lime);
            background: rgba(198, 233, 0, 0.1);
        }

        .bf-nav-toggle {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            border-radius: 8px;
            padding: 8px 10px;
            font-size: 20px;
            line-height: 1;
            cursor: pointer;
            transition: background var(--bf-transition);
        }

        .bf-nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .bf-mobile-nav {
            display: none;
            background: var(--bf-green-darker);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 12px 20px 20px;
            flex-direction: column;
            gap: 4px;
        }

        .bf-mobile-nav.open {
            display: flex;
        }

        .bf-mobile-nav .bf-nav-link {
            padding: 12px 8px;
            font-size: 15px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .bf-mobile-search {
            padding: 12px 20px 16px;
            background: var(--bf-green-darker);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: none;
        }

        .bf-mobile-search.open {
            display: block;
        }

        .bf-mobile-search .bf-header-search {
            max-width: 100%;
            flex: 1 1 100%;
        }

        @media (max-width: 991px) {
            .bf-nav {
                display: none;
            }
            .bf-nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                margin-left: auto;
            }
            .bf-header-inner {
                flex-wrap: nowrap;
            }
            .bf-logo {
                font-size: 20px;
            }
            .bf-header-search {
                display: none;
            }
        }

        @media (max-width: 575px) {
            .bf-logo {
                font-size: 18px;
            }
            .bf-logo-icon {
                width: 28px;
                height: 28px;
                font-size: 16px;
            }
        }

        /* Sections */
        .bf-section {
            padding-top: var(--bf-section-gap);
            padding-bottom: var(--bf-section-gap);
            position: relative;
        }

        .bf-section-alt {
            background: var(--bf-bg-green);
        }

        .bf-section-dark {
            background: var(--bf-green-darker);
            color: #fff;
        }

        .bf-section-orange {
            background: var(--bf-orange);
            color: #fff;
        }

        .bf-section-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--bf-text);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
            line-height: 1.35;
        }

        .bf-section-desc {
            font-size: 16px;
            color: var(--bf-text-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 28px;
        }

        .bf-section-dark .bf-section-title,
        .bf-section-dark .bf-section-desc {
            color: #fff;
        }

        .bf-section-orange .bf-section-title,
        .bf-section-orange .bf-section-desc {
            color: #fff;
        }

        @media (max-width: 575px) {
            .bf-section {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .bf-section-title {
                font-size: 22px;
            }
            .bf-section-desc {
                font-size: 15px;
            }
        }

        /* Buttons */
        .bf-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--bf-radius-sm);
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: background var(--bf-transition), color var(--bf-transition), box-shadow var(--bf-transition), transform var(--bf-transition), border-color var(--bf-transition);
            text-align: center;
            line-height: 1.5;
            white-space: nowrap;
        }

        .bf-btn:focus-visible {
            outline: 3px solid var(--bf-lime);
            outline-offset: 2px;
        }

        .bf-btn-primary {
            background: var(--bf-green);
            color: #fff;
        }

        .bf-btn-primary:hover {
            background: var(--bf-green-dark);
            color: #fff;
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-1px);
        }

        .bf-btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--bf-shadow-sm);
        }

        .bf-btn-orange {
            background: var(--bf-orange);
            color: #fff;
        }

        .bf-btn-orange:hover {
            background: var(--bf-orange-hover);
            color: #fff;
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-1px);
        }

        .bf-btn-outline {
            background: transparent;
            color: var(--bf-green);
            border: 1.5px solid var(--bf-green);
        }

        .bf-btn-outline:hover {
            background: var(--bf-bg-green);
            border-color: var(--bf-green-dark);
            color: var(--bf-green-dark);
            box-shadow: var(--bf-shadow-sm);
        }

        .bf-btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
        }

        .bf-btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }

        .bf-btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 6px;
        }

        .bf-btn-lg {
            padding: 14px 32px;
            font-size: 17px;
            border-radius: var(--bf-radius-md);
        }

        /* Badge & Tag */
        .bf-badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            border-radius: var(--bf-radius-full);
            font-size: 12px;
            font-weight: 600;
            line-height: 1.4;
            white-space: nowrap;
        }

        .bf-badge-green {
            background: rgba(27, 94, 32, 0.1);
            color: var(--bf-green);
        }

        .bf-badge-orange {
            background: rgba(255, 122, 0, 0.12);
            color: var(--bf-orange);
        }

        .bf-badge-lime {
            background: rgba(198, 233, 0, 0.2);
            color: #5C6B00;
        }

        .bf-badge-dark {
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
        }

        .bf-badge-muted {
            background: #EDF0EB;
            color: var(--bf-text-secondary);
        }

        /* Cards */
        .bf-card {
            background: var(--bf-card);
            border-radius: var(--bf-radius-lg);
            box-shadow: var(--bf-shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
            border: 1px solid var(--bf-border);
        }

        .bf-card:hover {
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-2px);
        }

        .bf-card-body {
            padding: 18px 20px 20px;
        }

        .bf-card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: #E8EDE4;
        }

        /* Hero */
        .bf-hero {
            background: var(--bf-green-dark);
            color: #fff;
            padding-top: 48px;
            padding-bottom: 56px;
            position: relative;
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }

        .bf-hero::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background: linear-gradient(105deg, transparent 0%, rgba(27, 94, 32, 0.48) 100%);
            pointer-events: none;
            z-index: 1;
        }

        .bf-hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .bf-hero-title {
            font-size: 38px;
            font-weight: 900;
            letter-spacing: 0.5px;
            line-height: 1.3;
            margin-bottom: 16px;
            color: #fff;
        }

        .bf-hero-title span {
            color: var(--bf-lime);
        }

        .bf-hero-sub {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.95;
            margin-bottom: 28px;
            max-width: 520px;
        }

        .bf-hero-search {
            display: flex;
            align-items: stretch;
            gap: 10px;
            max-width: 520px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .bf-hero-search input {
            flex: 1 1 260px;
            padding: 14px 18px 14px 48px;
            border-radius: var(--bf-radius-full);
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 15px;
            outline: none;
            transition: border-color var(--bf-transition), box-shadow var(--bf-transition), background var(--bf-transition);
        }

        .bf-hero-search input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .bf-hero-search input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198, 233, 0, 0.15);
            background: rgba(255, 255, 255, 0.16);
        }

        .bf-hero-search .bf-search-icon {
            color: rgba(255, 255, 255, 0.6);
        }

        .bf-hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }

        .bf-hero-video {
            aspect-ratio: 9 / 16;
            max-height: 420px;
            width: 100%;
            border-radius: var(--bf-radius-lg);
            background: #0F3D13;
            overflow: hidden;
            position: relative;
            border: 2px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .bf-hero-video img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .bf-hero-video-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 0, 0, 0.55);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 6px 12px;
            border-radius: var(--bf-radius-full);
            backdrop-filter: blur(6px);
            z-index: 2;
        }

        .bf-hero-video-play {
            position: absolute;
            bottom: 16px;
            left: 16px;
            right: 16px;
            background: rgba(0, 0, 0, 0.65);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            padding: 10px 14px;
            border-radius: var(--bf-radius-sm);
            backdrop-filter: blur(8px);
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .bf-hero-video-play svg {
            flex-shrink: 0;
        }

        .bf-hero-quick-cards {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 8px;
            z-index: 2;
            position: relative;
        }

        .bf-hero-quick-card {
            flex: 1 1 140px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--bf-radius-md);
            padding: 14px 16px;
            color: #fff;
            transition: background var(--bf-transition), border-color var(--bf-transition), transform var(--bf-transition);
            cursor: pointer;
            display: block;
            text-align: left;
        }

        .bf-hero-quick-card:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: var(--bf-lime);
            color: #fff;
            transform: translateY(-2px);
        }

        .bf-hero-quick-card .bf-icon-box {
            font-size: 22px;
            margin-bottom: 6px;
            font-weight: 700;
            color: var(--bf-lime);
        }

        .bf-hero-quick-card .bf-qc-title {
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
        }

        .bf-hero-quick-card .bf-qc-sub {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 2px;
        }

        @media (max-width: 991px) {
            .bf-hero-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .bf-hero-video {
                max-height: 320px;
                aspect-ratio: 16 / 10;
            }
            .bf-hero-title {
                font-size: 30px;
            }
        }

        @media (max-width: 575px) {
            .bf-hero {
                padding-top: 32px;
                padding-bottom: 40px;
            }
            .bf-hero-title {
                font-size: 24px;
            }
            .bf-hero-sub {
                font-size: 15px;
            }
            .bf-hero-quick-card {
                flex: 1 1 45%;
            }
        }

        /* Data strip */
        .bf-strip {
            background: var(--bf-orange);
            padding: 20px 0;
            color: #fff;
        }

        .bf-strip-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .bf-strip-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .bf-strip-number {
            font-family: var(--bf-font-mono);
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }

        .bf-strip-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.4;
        }

        @media (max-width: 767px) {
            .bf-strip-inner {
                gap: 10px;
            }
            .bf-strip-item {
                flex: 1 1 40%;
                justify-content: center;
            }
            .bf-strip-number {
                font-size: 22px;
            }
        }

        /* Service Matrix */
        .bf-matrix-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            grid-template-rows: auto auto;
            gap: var(--bf-gutter);
        }

        .bf-matrix-main {
            grid-row: span 2;
            background: var(--bf-card);
            border-radius: var(--bf-radius-lg);
            overflow: hidden;
            box-shadow: var(--bf-shadow-sm);
            border: 1px solid var(--bf-border);
            display: flex;
            flex-direction: column;
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }

        .bf-matrix-main:hover {
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-2px);
        }

        .bf-matrix-main-img {
            width: 100%;
            aspect-ratio: 16 / 7;
            object-fit: cover;
            background: #E8EDE4;
        }

        .bf-matrix-main .bf-card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .bf-matrix-side {
            background: var(--bf-card);
            border-radius: var(--bf-radius-lg);
            overflow: hidden;
            box-shadow: var(--bf-shadow-sm);
            border: 1px solid var(--bf-border);
            display: flex;
            flex-direction: column;
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }

        .bf-matrix-side:hover {
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-2px);
        }

        @media (max-width: 767px) {
            .bf-matrix-grid {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }
            .bf-matrix-main {
                grid-row: auto;
            }
            .bf-matrix-main-img {
                aspect-ratio: 16 / 9;
            }
        }

        /* Data Advantage */
        .bf-adv-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .bf-adv-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            padding: 20px 24px;
            border: 1px solid var(--bf-border);
            box-shadow: var(--bf-shadow-sm);
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }

        .bf-adv-item:hover {
            box-shadow: var(--bf-shadow-md);
            transform: translateX(4px);
        }

        .bf-adv-number {
            font-family: var(--bf-font-mono);
            font-size: 42px;
            font-weight: 700;
            color: var(--bf-green);
            min-width: 70px;
            text-align: right;
            line-height: 1.1;
            letter-spacing: -1px;
        }

        .bf-adv-text {
            flex: 1;
        }

        .bf-adv-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--bf-text);
            margin-bottom: 6px;
        }

        .bf-adv-desc {
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.8;
        }

        /* Process Steps */
        .bf-process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .bf-process-step {
            background: var(--bf-card);
            border-radius: var(--bf-radius-lg);
            padding: 22px 20px;
            text-align: center;
            border: 1px solid var(--bf-border);
            box-shadow: var(--bf-shadow-sm);
            position: relative;
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }

        .bf-process-step:hover {
            box-shadow: var(--bf-shadow-md);
            transform: translateY(-3px);
        }

        .bf-process-step::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -20px;
            width: 20px;
            height: 2px;
            background: repeating-linear-gradient(90deg, var(--bf-orange) 0, var(--bf-orange) 4px, transparent 4px, transparent 8px);
            transform: translateY(-50%);
            z-index: 1;
        }

        .bf-process-step:last-child::after {
            display: none;
        }

        .bf-step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bf-green);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 10px;
            font-family: var(--bf-font-mono);
        }

        .bf-step-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--bf-text);
            margin-bottom: 6px;
        }

        .bf-step-desc {
            font-size: 13px;
            color: var(--bf-text-secondary);
            line-height: 1.7;
        }

        @media (max-width: 991px) {
            .bf-process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .bf-process-step::after {
                display: none;
            }
        }

        @media (max-width: 575px) {
            .bf-process-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Case Cards */
        .bf-case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .bf-case-card {
            background: var(--bf-card);
            border-radius: var(--bf-radius-lg);
            overflow: hidden;
            box-shadow: var(--bf-shadow-sm);
            border: 1px solid var(--bf-border);
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
            display: flex;
            flex-direction: column;
        }

        .bf-case-card:hover {
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-3px);
        }

        .bf-case-card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: #E8EDE4;
        }

        .bf-case-card .bf-card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .bf-case-matchup {
            font-weight: 700;
            font-size: 15px;
            color: var(--bf-text);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .bf-case-data {
            font-size: 13px;
            color: var(--bf-text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
            flex: 1;
        }

        .bf-case-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }

        .bf-case-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--bf-green);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--bf-transition);
        }

        .bf-case-link:hover {
            color: var(--bf-orange);
        }

        @media (max-width: 991px) {
            .bf-case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575px) {
            .bf-case-grid {
                grid-template-columns: 1fr;
            }
        }

        /* News List */
        .bf-news-layout {
            display: grid;
            grid-template-columns: 2fr 3fr;
            gap: 24px;
        }

        .bf-news-featured {
            border-radius: var(--bf-radius-lg);
            overflow: hidden;
            box-shadow: var(--bf-shadow-md);
            border: 1px solid var(--bf-border);
            background: var(--bf-card);
            display: flex;
            flex-direction: column;
        }

        .bf-news-featured-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            background: #E8EDE4;
        }

        .bf-news-featured .bf-card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .bf-news-featured-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--bf-text);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .bf-news-featured-desc {
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.8;
            margin-bottom: 10px;
        }

        .bf-news-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .bf-news-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            padding: 14px 16px;
            border: 1px solid var(--bf-border);
            box-shadow: var(--bf-shadow-sm);
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }

        .bf-news-item:hover {
            box-shadow: var(--bf-shadow-md);
            transform: translateX(4px);
        }

        .bf-news-item-thumb {
            width: 80px;
            height: 56px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
            background: #E8EDE4;
        }

        .bf-news-item-content {
            flex: 1;
            min-width: 0;
        }

        .bf-news-item-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--bf-text);
            line-height: 1.6;
            margin-bottom: 4px;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .bf-news-item-meta {
            display: flex;
            gap: 8px;
            align-items: center;
            font-size: 12px;
            color: var(--bf-text-muted);
            flex-wrap: wrap;
        }

        @media (max-width: 767px) {
            .bf-news-layout {
                grid-template-columns: 1fr;
            }
        }

        /* Hot Teams */
        .bf-teams-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 10px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .bf-team-card {
            flex: 0 0 220px;
            scroll-snap-align: start;
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            overflow: hidden;
            box-shadow: var(--bf-shadow-sm);
            border: 1px solid var(--bf-border);
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }

        .bf-team-card:hover {
            box-shadow: var(--bf-shadow-md);
            transform: translateY(-2px);
        }

        .bf-team-card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: #E8EDE4;
        }

        .bf-team-card .bf-card-body {
            padding: 14px 16px;
        }

        .bf-team-name {
            font-size: 15px;
            font-weight: 700;
            color: var(--bf-text);
            margin-bottom: 4px;
        }

        .bf-team-stats {
            font-size: 12px;
            color: var(--bf-text-secondary);
            line-height: 1.6;
        }

        @media (max-width: 575px) {
            .bf-team-card {
                flex: 0 0 170px;
            }
        }

        /* Knowledge */
        .bf-knowledge-layout {
            display: grid;
            grid-template-columns: 2fr 3fr;
            gap: 32px;
            align-items: center;
        }

        .bf-knowledge-info .bf-section-title {
            margin-bottom: 12px;
        }

        .bf-knowledge-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .bf-knowledge-item {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            padding: 14px 16px;
            border: 1px solid var(--bf-border);
            box-shadow: var(--bf-shadow-sm);
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }

        .bf-knowledge-item:hover {
            box-shadow: var(--bf-shadow-md);
            transform: translateX(4px);
        }

        .bf-knowledge-num {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--bf-green);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            font-family: var(--bf-font-mono);
        }

        .bf-knowledge-item-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--bf-text);
            line-height: 1.5;
            flex: 1;
        }

        @media (max-width: 767px) {
            .bf-knowledge-layout {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* Brand Intro */
        .bf-brand-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .bf-brand-text {
            font-size: 15px;
            color: var(--bf-text-secondary);
            line-height: 1.95;
        }

        .bf-brand-img {
            border-radius: var(--bf-radius-lg);
            overflow: hidden;
            box-shadow: var(--bf-shadow-lg);
            border: 1px solid var(--bf-border);
        }

        .bf-brand-img img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
        }

        @media (max-width: 767px) {
            .bf-brand-layout {
                grid-template-columns: 1fr;
            }
        }

        /* Discussion */
        .bf-discussion-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .bf-discussion-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            padding: 16px 20px;
            border: 1px solid var(--bf-border);
            box-shadow: var(--bf-shadow-sm);
            transition: box-shadow var(--bf-transition);
        }

        .bf-discussion-item:hover {
            box-shadow: var(--bf-shadow-md);
        }

        .bf-discussion-avatar {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--bf-green);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }

        .bf-discussion-content {
            flex: 1;
        }

        .bf-discussion-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--bf-text);
        }

        .bf-discussion-text {
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.8;
            margin-top: 2px;
        }

        .bf-discussion-meta {
            font-size: 12px;
            color: var(--bf-text-muted);
            margin-top: 4px;
            display: flex;
            gap: 12px;
        }

        /* FAQ */
        .bf-accordion .accordion-item {
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-md) !important;
            overflow: hidden;
            margin-bottom: 10px;
            background: var(--bf-card);
            box-shadow: var(--bf-shadow-sm);
        }

        .bf-accordion .accordion-button {
            background: var(--bf-card);
            color: var(--bf-text);
            font-weight: 600;
            font-size: 15px;
            padding: 16px 20px;
            border: none;
            box-shadow: none;
            transition: background var(--bf-transition), color var(--bf-transition);
        }

        .bf-accordion .accordion-button:not(.collapsed) {
            background: var(--bf-bg-green);
            color: var(--bf-green);
            box-shadow: none;
        }

        .bf-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(27, 94, 32, 0.15);
            z-index: 1;
        }

        .bf-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%231B5E20'%3e%3cpath fill-rule='evenodd' d='M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4z'/%3e%3c/svg%3e");
        }

        .bf-accordion .accordion-body {
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.85;
            padding: 14px 20px 18px;
            background: var(--bf-card);
        }

        /* Guarantee */
        .bf-guarantee {
            background: var(--bf-bg-green);
            border-top: 3px solid var(--bf-lime);
            border-bottom: 3px solid var(--bf-lime);
        }

        .bf-guarantee-inner {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .bf-guarantee-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .bf-guarantee-item {
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            padding: 16px 18px;
            border: 1px solid var(--bf-border);
            box-shadow: var(--bf-shadow-sm);
        }

        .bf-guarantee-item-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--bf-green);
            margin-bottom: 4px;
        }

        .bf-guarantee-item-desc {
            font-size: 13px;
            color: var(--bf-text-secondary);
            line-height: 1.7;
        }

        @media (max-width: 991px) {
            .bf-guarantee-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575px) {
            .bf-guarantee-list {
                grid-template-columns: 1fr;
            }
        }

        /* Contact Form */
        .bf-contact-layout {
            display: grid;
            grid-template-columns: 2fr 3fr;
            gap: 32px;
            align-items: flex-start;
        }

        .bf-contact-form .form-group {
            margin-bottom: 16px;
        }

        .bf-contact-form label {
            font-size: 14px;
            font-weight: 600;
            color: var(--bf-text);
            margin-bottom: 6px;
            display: block;
        }

        .bf-contact-form input,
        .bf-contact-form select,
        .bf-contact-form textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--bf-radius-input);
            border: 1.5px solid var(--bf-border-green);
            background: #fff;
            font-size: 15px;
            color: var(--bf-text);
            outline: none;
            transition: border-color var(--bf-transition), box-shadow var(--bf-transition);
        }

        .bf-contact-form input:focus,
        .bf-contact-form select:focus,
        .bf-contact-form textarea:focus {
            border-color: var(--bf-green);
            box-shadow: 0 0 0 3px rgba(27, 94, 32, 0.1);
        }

        .bf-contact-form textarea {
            min-height: 120px;
            resize: vertical;
        }

        .bf-contact-info {
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.8;
        }

        @media (max-width: 767px) {
            .bf-contact-layout {
                grid-template-columns: 1fr;
            }
        }

        /* Footer */
        .bf-footer {
            background: var(--bf-green-darker);
            color: #fff;
            padding-top: 44px;
            padding-bottom: 24px;
        }

        .bf-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1.5fr 1.5fr 1.5fr;
            gap: 28px;
            margin-bottom: 32px;
        }

        .bf-footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .bf-footer-text {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.9;
        }

        .bf-footer-link {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            padding: 3px 0;
            transition: color var(--bf-transition);
        }

        .bf-footer-link:hover {
            color: var(--bf-lime);
        }

        .bf-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        @media (max-width: 991px) {
            .bf-footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 575px) {
            .bf-footer-grid {
                grid-template-columns: 1fr;
            }
            .bf-footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* Utility */
        .text-green {
            color: var(--bf-green);
        }
        .text-orange {
            color: var(--bf-orange);
        }
        .text-lime {
            color: var(--bf-lime);
        }
        .fw-800 {
            font-weight: 800;
        }
        .mb-1 {
            margin-bottom: 4px;
        }
        .mb-2 {
            margin-bottom: 8px;
        }
        .mb-3 {
            margin-bottom: 16px;
        }
        .mb-4 {
            margin-bottom: 24px;
        }
        .mb-5 {
            margin-bottom: 32px;
        }
        .mt-4 {
            margin-top: 24px;
        }
        .mt-5 {
            margin-top: 32px;
        }
        .gap-2 {
            gap: 8px;
        }
        .gap-3 {
            gap: 12px;
        }
        .gap-4 {
            gap: 16px;
        }
        .d-flex {
            display: flex;
        }
        .align-center {
            align-items: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .mono {
            font-family: var(--bf-font-mono);
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
            }
        }

/* roulang page: category2 */
:root {
            --bf-green: #1B5E20;
            --bf-green-dark: #0F3D13;
            --bf-green-darker: #16281A;
            --bf-orange: #FF7A00;
            --bf-orange-hover: #E66D00;
            --bf-lime: #C6E900;
            --bf-bg: #F5F3EE;
            --bf-bg-green: #F4F7F2;
            --bf-text: #1A1E1A;
            --bf-text-secondary: #5A625A;
            --bf-text-muted: #7A827A;
            --bf-card: #FFFFFF;
            --bf-border: #E0E4DE;
            --bf-border-green: rgba(27, 94, 32, 0.18);
            --bf-shadow-sm: 0 2px 8px rgba(27, 94, 32, 0.06);
            --bf-shadow-md: 0 4px 16px rgba(27, 94, 32, 0.08);
            --bf-shadow-lg: 0 8px 24px rgba(27, 94, 32, 0.14);
            --bf-radius-sm: 8px;
            --bf-radius-md: 12px;
            --bf-radius-lg: 16px;
            --bf-radius-full: 999px;
            --bf-radius-input: 10px;
            --bf-font-mono: 'Roboto Mono', 'SF Mono', 'Menlo', 'Consolas', monospace;
            --bf-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --bf-gutter: 24px;
            --bf-section-gap: 56px;
            --bf-transition: 0.2s ease;
        }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--bf-font-sans);
            color: var(--bf-text);
            background-color: var(--bf-bg);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--bf-green); text-decoration: none; transition: color var(--bf-transition); }
        a:hover { color: var(--bf-orange); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: var(--bf-font-sans); font-size: 16px; }
        .bf-container { width: 100%; max-width: 1200px; margin: 0 auto; padding-left: 32px; padding-right: 32px; }
        .bf-header {
            background: var(--bf-green-dark);
            border-bottom: 3px solid var(--bf-orange);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0,0,0,0.18);
        }
        .bf-header-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 12px 20px;
        }
        .bf-logo {
            font-size: 24px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.2;
        }
        .bf-logo:hover { color: var(--bf-lime); }
        .bf-logo-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            background: var(--bf-orange);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            line-height: 1;
        }
        .bf-header-search {
            flex: 1 1 280px;
            min-width: 200px;
            max-width: 420px;
            position: relative;
            display: flex;
            align-items: center;
        }
        .bf-header-search input {
            width: 100%;
            padding: 10px 16px 10px 44px;
            border-radius: var(--bf-radius-full);
            border: 1.5px solid rgba(255,255,255,0.2);
            background: rgba(255,255,255,0.1);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color var(--bf-transition), box-shadow var(--bf-transition), background var(--bf-transition);
        }
        .bf-header-search input::placeholder { color: rgba(255,255,255,0.55); font-size: 14px; }
        .bf-header-search input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198,233,0,0.15), 0 0 0 5px rgba(255,122,0,0.1);
            background: rgba(255,255,255,0.16);
        }
        .bf-search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            pointer-events: none;
            color: rgba(255,255,255,0.6);
            display: flex;
            align-items: center;
        }
        .bf-nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
        .bf-nav-link {
            color: rgba(255,255,255,0.82);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--bf-radius-sm);
            transition: color var(--bf-transition), background var(--bf-transition);
            white-space: nowrap;
        }
        .bf-nav-link:hover { color: #fff; background: rgba(255,255,255,0.1); }
        .bf-nav-link.active { color: var(--bf-lime); background: rgba(198,233,0,0.1); }
        .bf-nav-toggle {
            display: none;
            background: none;
            border: 1px solid rgba(255,255,255,0.3);
            border-radius: var(--bf-radius-sm);
            color: #fff;
            padding: 6px 10px;
        }
        .bf-mobile-collapse { width: 100%; display: none; }
        .bf-mobile-collapse.show { display: block; }
        .bf-section { padding: 48px 0; }
        .bf-section-alt { background-color: var(--bf-bg-green); }
        .bf-section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--bf-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .bf-section-subtitle {
            font-size: 16px;
            color: var(--bf-text-secondary);
            margin-bottom: 24px;
            line-height: 1.8;
        }
        .bf-card {
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            box-shadow: var(--bf-shadow-sm);
            border: 1px solid var(--bf-border);
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }
        .bf-card:hover { box-shadow: var(--bf-shadow-lg); transform: translateY(-2px); }
        .bf-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--bf-radius-full);
            font-size: 12px;
            font-weight: 600;
            background: #EAF4EB;
            color: var(--bf-green);
        }
        .bf-badge-orange {
            background: #FFF1E6;
            color: var(--bf-orange);
        }
        .bf-btn {
            display: inline-block;
            padding: 10px 22px;
            border-radius: var(--bf-radius-input);
            font-weight: 600;
            color: #fff;
            background: var(--bf-green);
            border: none;
            transition: background var(--bf-transition), transform var(--bf-transition);
            text-align: center;
        }
        .bf-btn:hover { background: var(--bf-green-dark); color: #fff; transform: translateY(-1px); }
        .bf-btn-orange { background: var(--bf-orange); }
        .bf-btn-orange:hover { background: var(--bf-orange-hover); }
        .bf-btn-outline {
            background: transparent;
            border: 1.5px solid var(--bf-green);
            color: var(--bf-green);
        }
        .bf-btn-outline:hover { background: #EAF4EB; color: var(--bf-green-dark); }
        .bf-data-value {
            font-family: var(--bf-font-mono);
            font-weight: 700;
            color: var(--bf-green);
        }
        .bf-hr { border-top: 1px solid var(--bf-border); opacity: 1; }
        .bf-footer {
            background: var(--bf-green-darker);
            color: rgba(255,255,255,0.8);
            padding: 48px 0 24px;
            margin-top: 24px;
        }
        .bf-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 32px; }
        .bf-footer-title { color: #fff; font-weight: 700; margin-bottom: 16px; }
        .bf-footer-text { font-size: 14px; line-height: 1.8; margin-bottom: 0; }
        .bf-footer-link { display: block; color: rgba(255,255,255,0.75); font-size: 14px; padding: 4px 0; transition: color var(--bf-transition); }
        .bf-footer-link:hover { color: var(--bf-lime); }
        .bf-footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top: 32px;
            padding-top: 16px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
        }
        .bf-toolbar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px 16px;
            background: #fff;
            border-radius: var(--bf-radius-md);
            padding: 14px 18px;
            box-shadow: var(--bf-shadow-sm);
            border: 1px solid var(--bf-border);
            margin-bottom: 24px;
        }
        .bf-filter-chip {
            background: #F4F7F2;
            border-radius: var(--bf-radius-full);
            padding: 4px 12px;
            font-size: 13px;
            color: var(--bf-text-secondary);
        }
        .bf-filter-chip.active { background: var(--bf-green); color: #fff; }
        .bf-sort-select {
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-input);
            padding: 6px 12px;
            background: #fff;
            color: var(--bf-text);
            font-size: 14px;
        }
        .bf-matrix-card {
            background: var(--bf-card);
            border-radius: var(--bf-radius-lg);
            box-shadow: var(--bf-shadow-sm);
            border: 1px solid var(--bf-border);
            overflow: hidden;
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
            height: 100%;
        }
        .bf-matrix-card:hover { box-shadow: var(--bf-shadow-lg); transform: translateY(-4px); }
        .bf-matrix-image {
            height: 150px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .bf-matrix-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,0.5) 100%);
        }
        .bf-matrix-body { padding: 18px 20px 20px; }
        .bf-matrix-title { font-size: 18px; font-weight: 700; color: var(--bf-text); margin-bottom: 8px; }
        .bf-meta-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 6px; font-size: 13px; color: var(--bf-text-muted); }
        .bf-hot-card {
            background: #fff;
            border-radius: var(--bf-radius-md);
            padding: 16px;
            box-shadow: var(--bf-shadow-sm);
            border: 1px solid var(--bf-border);
            min-width: 240px;
            transition: box-shadow var(--bf-transition);
        }
        .bf-hot-card:hover { box-shadow: var(--bf-shadow-md); }
        .bf-horizontal-scroll { display: flex; gap: 16px; overflow-x: auto; padding-bottom: 8px; scroll-snap-type: x mandatory; }
        .bf-horizontal-scroll > * { scroll-snap-align: start; }
        .bf-tip-strip {
            background: #FFF9F0;
            border-left: 4px solid var(--bf-orange);
            border-radius: var(--bf-radius-sm);
            padding: 18px 20px;
        }
        .bf-faq-item {
            background: #fff;
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-md);
            margin-bottom: 12px;
            overflow: hidden;
        }
        .bf-faq-question {
            padding: 16px 20px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--bf-text);
        }
        .bf-faq-answer {
            padding: 0 20px 16px;
            color: var(--bf-text-secondary);
            border-top: 1px solid var(--bf-border);
            padding-top: 12px;
        }
        .bf-cta-box {
            background: var(--bf-green-dark);
            border-radius: var(--bf-radius-lg);
            padding: 32px;
            color: #fff;
        }
        .bf-input {
            width: 100%;
            padding: 10px 16px;
            border-radius: var(--bf-radius-input);
            border: 1px solid var(--bf-border);
            background: #fff;
            color: var(--bf-text);
            outline: none;
        }
        .bf-input:focus { border-color: var(--bf-orange); box-shadow: 0 0 0 3px rgba(255,122,0,0.15); }
        @media (max-width: 992px) {
            .bf-header-inner { flex-wrap: wrap; }
            .bf-nav { order: 3; width: 100%; }
            .bf-header-search { order: 2; flex: 1 1 200px; }
        }
        @media (max-width: 768px) {
            .bf-container { padding-left: 20px; padding-right: 20px; }
            .bf-footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
            .bf-nav { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; }
            .bf-nav-link { white-space: nowrap; }
            .bf-section { padding: 32px 0; }
            .bf-section-title { font-size: 24px; }
            .bf-mobile-collapse.show { display: block; }
            .bf-nav-toggle { display: inline-block; }
            .bf-header-search { order: 3; width: 100%; max-width: none; }
            .bf-nav { order: 4; width: 100%; }
        }
        @media (max-width: 576px) {
            .bf-container { padding-left: 16px; padding-right: 16px; }
            .bf-footer-grid { grid-template-columns: 1fr; }
            .bf-section-title { font-size: 22px; }
            .bf-toolbar { flex-direction: column; align-items: flex-start; }
        }

/* roulang page: category1 */
:root {
            --bf-green: #1B5E20;
            --bf-green-dark: #0F3D13;
            --bf-green-darker: #16281A;
            --bf-orange: #FF7A00;
            --bf-orange-hover: #E66D00;
            --bf-lime: #C6E900;
            --bf-bg: #F5F3EE;
            --bf-bg-green: #F4F7F2;
            --bf-text: #1A1E1A;
            --bf-text-secondary: #5A625A;
            --bf-text-muted: #7A827A;
            --bf-card: #FFFFFF;
            --bf-border: #E0E4DE;
            --bf-border-green: rgba(27, 94, 32, 0.18);
            --bf-shadow-sm: 0 2px 8px rgba(27, 94, 32, 0.06);
            --bf-shadow-md: 0 4px 16px rgba(27, 94, 32, 0.08);
            --bf-shadow-lg: 0 8px 24px rgba(27, 94, 32, 0.14);
            --bf-radius-sm: 8px;
            --bf-radius-md: 12px;
            --bf-radius-lg: 16px;
            --bf-radius-full: 999px;
            --bf-radius-input: 10px;
            --bf-font-mono: 'Roboto Mono', 'SF Mono', 'Menlo', 'Consolas', monospace;
            --bf-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --bf-gutter: 24px;
            --bf-section-gap: 56px;
            --bf-transition: 0.2s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--bf-font-sans);
            color: var(--bf-text);
            background-color: var(--bf-bg);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--bf-green);
            text-decoration: none;
            transition: color var(--bf-transition);
        }
        a:hover {
            color: var(--bf-orange);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: var(--bf-font-sans);
            font-size: 16px;
        }
        .bf-container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 768px) {
            .bf-container {
                padding-left: 28px;
                padding-right: 28px;
            }
        }
        @media (min-width: 1024px) {
            .bf-container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        /* Header */
        .bf-header {
            background: var(--bf-green-dark);
            border-bottom: 3px solid var(--bf-orange);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
        }
        .bf-header-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 12px 20px;
        }
        .bf-logo {
            font-size: 24px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.2;
        }
        .bf-logo:hover {
            color: var(--bf-lime);
        }
        .bf-logo-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            background: var(--bf-orange);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            line-height: 1;
        }
        .bf-header-search {
            flex: 1 1 280px;
            min-width: 200px;
            max-width: 420px;
            position: relative;
            display: flex;
            align-items: center;
        }
        .bf-header-search input {
            width: 100%;
            padding: 10px 16px 10px 44px;
            border-radius: var(--bf-radius-full);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color var(--bf-transition), box-shadow var(--bf-transition), background var(--bf-transition);
        }
        .bf-header-search input::placeholder {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
        }
        .bf-header-search input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198, 233, 0, 0.15), 0 0 0 5px rgba(255, 122, 0, 0.1);
            background: rgba(255, 255, 255, 0.16);
        }
        .bf-search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            pointer-events: none;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
        }
        .bf-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .bf-nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--bf-radius-sm);
            transition: color var(--bf-transition), background var(--bf-transition);
            white-space: nowrap;
        }
        .bf-nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .bf-nav-link.active {
            color: var(--bf-lime);
            background: rgba(198, 233, 0, 0.1);
        }
        .bf-nav-toggle {
            display: none;
            background: none;
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--bf-radius-sm);
            color: #fff;
            font-size: 22px;
            padding: 4px 10px;
            cursor: pointer;
            line-height: 1.2;
            transition: background var(--bf-transition), border-color var(--bf-transition);
            margin-left: auto;
        }
        .bf-nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
        }
        .bf-nav-toggle:focus {
            outline: 2px solid var(--bf-lime);
            outline-offset: 2px;
        }
        .bf-mobile-menu {
            display: none;
            width: 100%;
            padding: 8px 0 16px;
            flex-direction: column;
            gap: 4px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 8px;
        }
        .bf-mobile-menu.open {
            display: flex;
        }
        .bf-mobile-menu .bf-nav-link {
            display: block;
            width: 100%;
            padding: 10px 12px;
            font-size: 15px;
        }
        @media (max-width: 991px) {
            .bf-nav {
                display: none;
            }
            .bf-nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .bf-header-search {
                max-width: 250px;
            }
        }
        @media (max-width: 575px) {
            .bf-header-search {
                flex: 1 1 auto;
                min-width: 120px;
                max-width: 180px;
            }
            .bf-header-search input {
                padding-left: 38px;
                font-size: 13px;
            }
            .bf-search-icon {
                left: 12px;
            }
            .bf-logo {
                font-size: 20px;
            }
            .bf-logo-icon {
                width: 28px;
                height: 28px;
                font-size: 15px;
            }
        }
        /* Breadcrumb */
        .bf-breadcrumb {
            padding: 16px 0 8px;
            font-size: 14px;
            color: var(--bf-text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .bf-breadcrumb a {
            color: var(--bf-green);
        }
        .bf-breadcrumb a:hover {
            color: var(--bf-orange);
        }
        .bf-breadcrumb .sep {
            color: var(--bf-text-muted);
        }
        .bf-breadcrumb .current {
            color: var(--bf-text-secondary);
        }
        /* Section base */
        .bf-section {
            padding: 48px 0;
        }
        .bf-section-alt {
            background: var(--bf-bg-green);
        }
        .bf-section-deep {
            background: var(--bf-green-darker);
            color: #fff;
        }
        .bf-section-heading {
            font-size: 28px;
            font-weight: 800;
            color: var(--bf-text);
            margin-bottom: 8px;
            letter-spacing: 0.5px;
            line-height: 1.4;
        }
        .bf-section-sub {
            font-size: 16px;
            color: var(--bf-text-secondary);
            margin-bottom: 28px;
            line-height: 1.85;
        }
        /* Card */
        .bf-card {
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            box-shadow: var(--bf-shadow-sm);
            border: 1px solid var(--bf-border);
            overflow: hidden;
            transition: box-shadow var(--bf-transition), transform var(--bf-transition), border-color var(--bf-transition);
        }
        .bf-card:hover {
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-2px);
            border-color: var(--bf-border-green);
        }
        .bf-card-body {
            padding: 20px 22px;
        }
        /* Buttons */
        .bf-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--bf-radius-sm);
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: background var(--bf-transition), color var(--bf-transition), box-shadow var(--bf-transition), border-color var(--bf-transition);
            line-height: 1.5;
            text-align: center;
        }
        .bf-btn-primary {
            background: var(--bf-green);
            color: #fff;
        }
        .bf-btn-primary:hover {
            background: var(--bf-green-dark);
            color: #fff;
            box-shadow: 0 4px 14px rgba(27, 94, 32, 0.28);
        }
        .bf-btn-primary:focus-visible {
            outline: 2px solid var(--bf-orange);
            outline-offset: 2px;
        }
        .bf-btn-orange {
            background: var(--bf-orange);
            color: #fff;
        }
        .bf-btn-orange:hover {
            background: var(--bf-orange-hover);
            color: #fff;
            box-shadow: 0 4px 14px rgba(255, 122, 0, 0.3);
        }
        .bf-btn-outline {
            background: transparent;
            color: var(--bf-green);
            border: 1.5px solid var(--bf-green);
        }
        .bf-btn-outline:hover {
            background: var(--bf-bg-green);
            border-color: var(--bf-green-dark);
            color: var(--bf-green-dark);
        }
        .bf-btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }
        .bf-btn-lg {
            padding: 14px 32px;
            font-size: 17px;
        }
        /* Badge/Tag */
        .bf-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: var(--bf-radius-full);
            font-size: 12px;
            font-weight: 600;
            line-height: 1.6;
            white-space: nowrap;
        }
        .bf-badge-green {
            background: rgba(27, 94, 32, 0.1);
            color: var(--bf-green);
            border: 1px solid rgba(27, 94, 32, 0.2);
        }
        .bf-badge-orange {
            background: rgba(255, 122, 0, 0.1);
            color: var(--bf-orange);
            border: 1px solid rgba(255, 122, 0, 0.22);
        }
        .bf-badge-lime {
            background: rgba(198, 233, 0, 0.16);
            color: #5A7A00;
            border: 1px solid rgba(198, 233, 0, 0.4);
        }
        .bf-badge-grey {
            background: rgba(90, 98, 90, 0.08);
            color: var(--bf-text-secondary);
            border: 1px solid rgba(90, 98, 90, 0.15);
        }
        /* Mono number */
        .bf-mono {
            font-family: var(--bf-font-mono);
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        /* Category page heading */
        .bf-cat-heading {
            padding: 36px 0 20px;
            background: var(--bf-bg-green);
            border-bottom: 1px solid var(--bf-border);
        }
        .bf-cat-heading h1 {
            font-size: 34px;
            font-weight: 800;
            color: var(--bf-text);
            margin-bottom: 8px;
            letter-spacing: 0.5px;
            line-height: 1.35;
        }
        .bf-cat-heading p {
            font-size: 16px;
            color: var(--bf-text-secondary);
            max-width: 760px;
            line-height: 1.85;
            margin-bottom: 0;
        }
        @media (max-width: 575px) {
            .bf-cat-heading h1 {
                font-size: 26px;
            }
            .bf-cat-heading {
                padding: 24px 0 14px;
            }
            .bf-section {
                padding: 36px 0;
            }
            .bf-section-heading {
                font-size: 22px;
            }
        }
        /* Filter toolbar */
        .bf-filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--bf-border);
            margin-bottom: 24px;
        }
        .bf-filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .bf-filter-tag {
            padding: 6px 14px;
            border-radius: var(--bf-radius-full);
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--bf-border);
            background: var(--bf-card);
            color: var(--bf-text-secondary);
            cursor: pointer;
            transition: all var(--bf-transition);
            white-space: nowrap;
        }
        .bf-filter-tag:hover {
            border-color: var(--bf-green);
            color: var(--bf-green);
        }
        .bf-filter-tag.active {
            background: var(--bf-green);
            color: #fff;
            border-color: var(--bf-green);
        }
        .bf-sort-select {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--bf-text-secondary);
            margin-left: auto;
        }
        .bf-sort-select select {
            padding: 6px 12px;
            border-radius: var(--bf-radius-input);
            border: 1px solid var(--bf-border);
            background: var(--bf-card);
            color: var(--bf-text);
            font-size: 13px;
            outline: none;
            cursor: pointer;
            transition: border-color var(--bf-transition);
        }
        .bf-sort-select select:focus {
            border-color: var(--bf-green);
        }
        /* Timeline list */
        .bf-timeline {
            position: relative;
            padding-left: 28px;
        }
        .bf-timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: var(--bf-border-green);
            border-radius: 2px;
        }
        .bf-timeline-item {
            position: relative;
            margin-bottom: 20px;
        }
        .bf-timeline-item:last-child {
            margin-bottom: 0;
        }
        .bf-timeline-dot {
            position: absolute;
            left: -28px;
            top: 18px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--bf-green);
            border: 3px solid var(--bf-bg);
            box-shadow: 0 0 0 2px var(--bf-border-green);
            z-index: 1;
        }
        .bf-timeline-dot.orange {
            background: var(--bf-orange);
            box-shadow: 0 0 0 2px rgba(255, 122, 0, 0.2);
        }
        .bf-match-card {
            display: flex;
            align-items: stretch;
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            box-shadow: var(--bf-shadow-sm);
            border: 1px solid var(--bf-border);
            overflow: hidden;
            transition: box-shadow var(--bf-transition), border-color var(--bf-transition);
        }
        .bf-match-card:hover {
            box-shadow: var(--bf-shadow-md);
            border-color: var(--bf-border-green);
        }
        .bf-match-time {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 16px 18px;
            background: var(--bf-bg-green);
            min-width: 80px;
            text-align: center;
            border-right: 1px solid var(--bf-border);
        }
        .bf-match-time .time {
            font-size: 18px;
            font-weight: 700;
            color: var(--bf-text);
            font-family: var(--bf-font-mono);
            line-height: 1.3;
        }
        .bf-match-time .label {
            font-size: 12px;
            color: var(--bf-text-muted);
            margin-top: 2px;
        }
        .bf-match-body {
            flex: 1;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 16px;
            padding: 14px 18px;
        }
        .bf-match-teams {
            flex: 1 1 200px;
            min-width: 160px;
        }
        .bf-match-teams .league {
            font-size: 12px;
            color: var(--bf-text-muted);
            margin-bottom: 2px;
        }
        .bf-match-teams .teams {
            font-size: 16px;
            font-weight: 700;
            color: var(--bf-text);
            line-height: 1.4;
        }
        .bf-match-teams .teams .vs {
            color: var(--bf-orange);
            font-weight: 600;
            margin: 0 6px;
            font-size: 14px;
        }
        .bf-match-tags {
            flex: 0 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .bf-match-odds {
            flex: 0 0 auto;
            display: flex;
            gap: 16px;
            align-items: center;
            padding-left: 12px;
            border-left: 1px dashed var(--bf-border);
        }
        .bf-odds-item {
            text-align: center;
        }
        .bf-odds-item .odds-label {
            font-size: 11px;
            color: var(--bf-text-muted);
            margin-bottom: 2px;
        }
        .bf-odds-item .odds-value {
            font-size: 14px;
            font-weight: 600;
            font-family: var(--bf-font-mono);
            color: var(--bf-text);
        }
        .bf-odds-item .odds-value.down {
            color: var(--bf-green);
        }
        .bf-odds-item .odds-value.up {
            color: var(--bf-orange);
        }
        @media (max-width: 767px) {
            .bf-match-body {
                flex-direction: column;
                align-items: flex-start;
            }
            .bf-match-time {
                min-width: 68px;
                padding: 12px 12px;
            }
            .bf-match-odds {
                border-left: none;
                padding-left: 0;
                border-top: 1px dashed var(--bf-border);
                padding-top: 10px;
                width: 100%;
                justify-content: flex-start;
            }
            .bf-timeline {
                padding-left: 24px;
            }
            .bf-timeline::before {
                left: 6px;
            }
            .bf-timeline-dot {
                left: -24px;
                width: 14px;
                height: 14px;
                top: 16px;
                border-width: 2px;
            }
        }
        /* Pagination bar */
        .bf-pagination-bar {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 24px 0 8px;
        }
        .bf-page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--bf-radius-sm);
            border: 1px solid var(--bf-border);
            background: var(--bf-card);
            color: var(--bf-text-secondary);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--bf-transition);
        }
        .bf-page-btn:hover {
            border-color: var(--bf-green);
            color: var(--bf-green);
        }
        .bf-page-btn.active {
            background: var(--bf-green);
            color: #fff;
            border-color: var(--bf-green);
        }
        .bf-page-btn.prev,
        .bf-page-btn.next {
            width: auto;
            padding: 0 16px;
        }
        /* Horizontal scroll cards */
        .bf-scroll-row {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 12px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--bf-border-green) transparent;
        }
        .bf-scroll-row::-webkit-scrollbar {
            height: 6px;
        }
        .bf-scroll-row::-webkit-scrollbar-track {
            background: transparent;
        }
        .bf-scroll-row::-webkit-scrollbar-thumb {
            background: var(--bf-border-green);
            border-radius: 999px;
        }
        .bf-scroll-card {
            flex: 0 0 260px;
            scroll-snap-align: start;
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            box-shadow: var(--bf-shadow-sm);
            border: 1px solid var(--bf-border);
            overflow: hidden;
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }
        .bf-scroll-card:hover {
            box-shadow: var(--bf-shadow-md);
            transform: translateY(-2px);
        }
        .bf-scroll-card img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }
        .bf-scroll-card .card-content {
            padding: 14px 16px;
        }
        .bf-scroll-card .card-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--bf-text);
            margin-bottom: 4px;
            line-height: 1.5;
        }
        .bf-scroll-card .card-desc {
            font-size: 13px;
            color: var(--bf-text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
        }
        .bf-scroll-card .card-meta {
            font-size: 12px;
            color: var(--bf-text-muted);
            display: flex;
            gap: 8px;
            align-items: center;
        }
        @media (max-width: 575px) {
            .bf-scroll-card {
                flex: 0 0 220px;
            }
            .bf-scroll-card img {
                height: 120px;
            }
        }
        /* Info strip */
        .bf-info-strip {
            background: var(--bf-bg-green);
            border: 1px solid var(--bf-border-green);
            border-radius: var(--bf-radius-md);
            padding: 20px 24px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.8;
        }
        .bf-info-strip .icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            background: var(--bf-green);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }
        /* FAQ */
        .bf-accordion-item {
            background: var(--bf-card);
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--bf-shadow-sm);
        }
        .bf-accordion-item:last-child {
            margin-bottom: 0;
        }
        .bf-accordion-header {
            width: 100%;
            padding: 16px 20px;
            background: none;
            border: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--bf-text);
            text-align: left;
            line-height: 1.6;
            transition: background var(--bf-transition);
        }
        .bf-accordion-header:hover {
            background: var(--bf-bg-green);
        }
        .bf-accordion-header:focus-visible {
            outline: 2px solid var(--bf-orange);
            outline-offset: -2px;
        }
        .bf-accordion-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--bf-bg-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: var(--bf-green);
            transition: transform var(--bf-transition);
        }
        .bf-accordion-item.open .bf-accordion-icon {
            transform: rotate(45deg);
        }
        .bf-accordion-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        .bf-accordion-body-inner {
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--bf-text-secondary);
            line-height: 1.85;
        }
        .bf-accordion-item.open .bf-accordion-body {
            max-height: 500px;
        }
        /* CTA */
        .bf-cta-box {
            background: var(--bf-green-darker);
            border-radius: var(--bf-radius-lg);
            padding: 36px 32px;
            display: flex;
            flex-wrap: wrap;
            gap: 24px 32px;
            align-items: center;
            color: #fff;
        }
        .bf-cta-box .cta-left {
            flex: 1 1 300px;
        }
        .bf-cta-box .cta-left h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
            line-height: 1.4;
        }
        .bf-cta-box .cta-left p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 0;
        }
        .bf-cta-box .cta-right {
            flex: 1 1 260px;
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .bf-cta-box .cta-right input {
            flex: 1;
            padding: 12px 16px;
            border-radius: var(--bf-radius-input);
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color var(--bf-transition), box-shadow var(--bf-transition);
        }
        .bf-cta-box .cta-right input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .bf-cta-box .cta-right input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198, 233, 0, 0.12);
        }
        @media (max-width: 767px) {
            .bf-cta-box {
                padding: 28px 20px;
                flex-direction: column;
                align-items: stretch;
            }
            .bf-cta-box .cta-right {
                flex-direction: column;
            }
            .bf-cta-box .cta-right input {
                width: 100%;
            }
        }
        /* Footer */
        .bf-footer {
            background: var(--bf-green-darker);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        .bf-footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .bf-footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .bf-footer-text {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            margin-bottom: 0;
        }
        .bf-footer-link {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            padding: 4px 0;
            transition: color var(--bf-transition);
        }
        .bf-footer-link:hover {
            color: var(--bf-lime);
        }
        .bf-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            justify-content: space-between;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        @media (max-width: 991px) {
            .bf-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 575px) {
            .bf-footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .bf-footer {
                padding: 32px 0 16px;
            }
            .bf-footer-bottom {
                flex-direction: column;
                gap: 4px;
            }
        }

/* roulang page: category3 */
:root {
            --bf-green: #1B5E20;
            --bf-green-dark: #0F3D13;
            --bf-green-darker: #16281A;
            --bf-orange: #FF7A00;
            --bf-orange-hover: #E66D00;
            --bf-lime: #C6E900;
            --bf-bg: #F5F3EE;
            --bf-bg-green: #F4F7F2;
            --bf-text: #1A1E1A;
            --bf-text-secondary: #5A625A;
            --bf-text-muted: #7A827A;
            --bf-card: #FFFFFF;
            --bf-border: #E0E4DE;
            --bf-border-green: rgba(27, 94, 32, 0.18);
            --bf-shadow-sm: 0 2px 8px rgba(27, 94, 32, 0.06);
            --bf-shadow-md: 0 4px 16px rgba(27, 94, 32, 0.08);
            --bf-shadow-lg: 0 8px 24px rgba(27, 94, 32, 0.14);
            --bf-radius-sm: 8px;
            --bf-radius-md: 12px;
            --bf-radius-lg: 16px;
            --bf-radius-full: 999px;
            --bf-radius-input: 10px;
            --bf-font-mono: 'Roboto Mono', 'SF Mono', 'Menlo', 'Consolas', monospace;
            --bf-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --bf-gutter: 24px;
            --bf-section-gap: 56px;
            --bf-transition: 0.2s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--bf-font-sans);
            color: var(--bf-text);
            background-color: var(--bf-bg);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        a {
            color: var(--bf-green);
            text-decoration: none;
            transition: color var(--bf-transition);
        }

        a:hover {
            color: var(--bf-orange);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--bf-font-sans);
            font-size: 16px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.35;
            font-weight: 700;
            color: var(--bf-text);
            margin-top: 0;
        }

        /* Container */
        .bf-container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 768px) {
            .bf-container {
                padding-left: 28px;
                padding-right: 28px;
            }
        }

        @media (min-width: 1200px) {
            .bf-container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        /* Header */
        .bf-header {
            background: var(--bf-green-dark);
            border-bottom: 3px solid var(--bf-orange);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
        }

        .bf-header-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 12px 20px;
        }

        .bf-logo {
            font-size: 22px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.2;
        }

        .bf-logo:hover {
            color: var(--bf-lime);
        }

        .bf-logo-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            background: var(--bf-orange);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            line-height: 1;
        }

        .bf-header-search {
            flex: 1 1 280px;
            min-width: 200px;
            max-width: 420px;
            position: relative;
            display: flex;
            align-items: center;
        }

        .bf-header-search input {
            width: 100%;
            padding: 10px 16px 10px 44px;
            border-radius: var(--bf-radius-full);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color var(--bf-transition), box-shadow var(--bf-transition), background var(--bf-transition);
        }

        .bf-header-search input::placeholder {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
        }

        .bf-header-search input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198, 233, 0, 0.15), 0 0 0 5px rgba(255, 122, 0, 0.1);
            background: rgba(255, 255, 255, 0.16);
        }

        .bf-search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            pointer-events: none;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
        }

        .bf-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .bf-nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--bf-radius-sm);
            transition: color var(--bf-transition), background var(--bf-transition);
            white-space: nowrap;
        }

        .bf-nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        .bf-nav-link.active {
            color: var(--bf-lime);
            background: rgba(198, 233, 0, 0.12);
            font-weight: 600;
        }

        .bf-nav-toggle {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--bf-radius-sm);
            padding: 6px 10px;
            color: #fff;
            font-size: 20px;
            line-height: 1;
            cursor: pointer;
            transition: background var(--bf-transition);
        }

        .bf-nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .bf-mobile-search-btn {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            cursor: pointer;
            transition: background var(--bf-transition);
        }

        .bf-mobile-search-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .bf-mobile-search-layer {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(15, 61, 19, 0.98);
            z-index: 2000;
            padding: 20px;
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            padding-top: 60px;
        }

        .bf-mobile-search-layer.open {
            display: flex;
        }

        .bf-mobile-search-close {
            position: absolute;
            top: 20px;
            right: 20px;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 24px;
            cursor: pointer;
        }

        .bf-mobile-search-input {
            width: 100%;
            max-width: 500px;
            padding: 14px 20px;
            border-radius: var(--bf-radius-full);
            border: 2px solid var(--bf-lime);
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 18px;
            outline: none;
        }

        .bf-mobile-search-input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }

        /* Breadcrumb */
        .bf-breadcrumb {
            padding: 14px 0;
            font-size: 14px;
            color: var(--bf-text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .bf-breadcrumb a {
            color: var(--bf-text-secondary);
            transition: color var(--bf-transition);
        }

        .bf-breadcrumb a:hover {
            color: var(--bf-orange);
        }

        .bf-breadcrumb .bf-breadcrumb-sep {
            color: var(--bf-text-muted);
        }

        .bf-breadcrumb .bf-breadcrumb-current {
            color: var(--bf-green);
            font-weight: 600;
        }

        /* Section base */
        .bf-section {
            padding-top: var(--bf-section-gap);
            padding-bottom: var(--bf-section-gap);
        }

        .bf-section-alt {
            background: var(--bf-bg-green);
        }

        .bf-section-title {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--bf-text);
        }

        .bf-section-subtitle {
            font-size: 16px;
            color: var(--bf-text-secondary);
            margin-bottom: 28px;
            max-width: 700px;
            line-height: 1.8;
        }

        /* Category H1 header */
        .bf-cat-header {
            padding: 48px 0 32px;
            background: linear-gradient(135deg, var(--bf-green-dark) 0%, var(--bf-green) 60%, #1a6b24 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .bf-cat-header::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(198, 233, 0, 0.08);
            pointer-events: none;
        }

        .bf-cat-header h1 {
            color: #fff;
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .bf-cat-header p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 720px;
            margin-bottom: 0;
            line-height: 1.9;
            position: relative;
            z-index: 1;
        }

        .bf-cat-badge {
            display: inline-block;
            background: var(--bf-orange);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--bf-radius-full);
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        /* Filter toolbar */
        .bf-filter-toolbar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px 16px;
            padding: 16px 20px;
            background: var(--bf-card);
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-md);
            box-shadow: var(--bf-shadow-sm);
            margin-bottom: 28px;
        }

        .bf-filter-label {
            font-size: 14px;
            color: var(--bf-text-muted);
            white-space: nowrap;
        }

        .bf-filter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .bf-filter-tag {
            padding: 5px 14px;
            font-size: 13px;
            border-radius: var(--bf-radius-full);
            border: 1px solid var(--bf-border);
            background: var(--bf-bg);
            color: var(--bf-text-secondary);
            cursor: pointer;
            transition: all var(--bf-transition);
            white-space: nowrap;
        }

        .bf-filter-tag:hover {
            border-color: var(--bf-green);
            color: var(--bf-green);
        }

        .bf-filter-tag.active {
            background: var(--bf-green);
            color: #fff;
            border-color: var(--bf-green);
        }

        .bf-filter-sort {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
        }

        .bf-filter-sort select {
            padding: 6px 12px;
            border-radius: var(--bf-radius-sm);
            border: 1px solid var(--bf-border);
            background: var(--bf-bg);
            color: var(--bf-text-secondary);
            font-size: 13px;
            outline: none;
            cursor: pointer;
        }

        /* Pankou comparison cards */
        .bf-pankou-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .bf-pankou-card {
            background: var(--bf-card);
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-lg);
            box-shadow: var(--bf-shadow-md);
            overflow: hidden;
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
            display: grid;
            grid-template-columns: 1fr;
        }

        .bf-pankou-card:hover {
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-2px);
        }

        .bf-pankou-card-inner {
            display: grid;
            grid-template-columns: 180px 1fr 1fr 1fr 1fr;
            align-items: center;
            gap: 0;
            padding: 0;
        }

        .bf-pankou-match {
            padding: 20px;
            background: var(--bf-bg-green);
            border-right: 1px solid var(--bf-border);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .bf-pankou-match .bf-match-date {
            font-size: 12px;
            color: var(--bf-text-muted);
            letter-spacing: 0.3px;
        }

        .bf-pankou-match .bf-match-teams {
            font-size: 16px;
            font-weight: 700;
            color: var(--bf-text);
            line-height: 1.4;
        }

        .bf-pankou-match .bf-match-league {
            font-size: 12px;
            color: var(--bf-orange);
            font-weight: 600;
        }

        .bf-pankou-col {
            padding: 20px 16px;
            border-right: 1px solid var(--bf-border);
            text-align: center;
        }

        .bf-pankou-col:last-child {
            border-right: none;
        }

        .bf-pankou-col .bf-col-label {
            font-size: 12px;
            color: var(--bf-text-muted);
            margin-bottom: 6px;
            letter-spacing: 0.5px;
        }

        .bf-pankou-col .bf-col-value {
            font-family: var(--bf-font-mono);
            font-size: 20px;
            font-weight: 700;
            color: var(--bf-text);
            line-height: 1.3;
        }

        .bf-pankou-col .bf-col-value.bf-up {
            color: var(--bf-green);
        }

        .bf-pankou-col .bf-col-value.bf-down {
            color: #C62828;
        }

        .bf-pankou-col .bf-col-value.bf-stable {
            color: var(--bf-text-secondary);
        }

        .bf-change-indicator {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--bf-radius-full);
        }

        .bf-change-indicator.bf-up {
            background: rgba(27, 94, 32, 0.08);
            color: var(--bf-green);
        }

        .bf-change-indicator.bf-down {
            background: rgba(198, 40, 40, 0.08);
            color: #C62828;
        }

        .bf-change-indicator.bf-stable {
            background: rgba(90, 98, 90, 0.08);
            color: var(--bf-text-secondary);
        }

        .bf-pankou-arrow {
            font-family: var(--bf-font-mono);
            font-style: normal;
            font-size: 16px;
        }

        /* Pankou analysis note */
        .bf-pankou-note {
            padding: 14px 20px;
            background: #FAFAF7;
            border-top: 1px dashed var(--bf-border);
            font-size: 13px;
            color: var(--bf-text-secondary);
            line-height: 1.7;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .bf-pankou-note .bf-note-icon {
            flex-shrink: 0;
            font-weight: 700;
            color: var(--bf-orange);
        }

        /* Pagination */
        .bf-pagination-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 28px;
            padding: 16px 0;
            border-top: 1px solid var(--bf-border);
        }

        .bf-pagination-info {
            font-size: 14px;
            color: var(--bf-text-muted);
        }

        .bf-pagination {
            display: flex;
            gap: 6px;
            align-items: center;
        }

        .bf-page-btn {
            padding: 8px 16px;
            border-radius: var(--bf-radius-sm);
            border: 1px solid var(--bf-border);
            background: var(--bf-card);
            color: var(--bf-text-secondary);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--bf-transition);
            text-decoration: none;
        }

        .bf-page-btn:hover {
            border-color: var(--bf-green);
            color: var(--bf-green);
            background: var(--bf-bg-green);
        }

        .bf-page-btn.active {
            background: var(--bf-green);
            color: #fff;
            border-color: var(--bf-green);
        }

        .bf-page-btn.bf-more-btn {
            background: var(--bf-orange);
            color: #fff;
            border-color: var(--bf-orange);
        }

        .bf-page-btn.bf-more-btn:hover {
            background: var(--bf-orange-hover);
            border-color: var(--bf-orange-hover);
            color: #fff;
        }

        /* Hot matches horizontal scroll */
        .bf-hot-matches {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 12px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .bf-hot-matches::-webkit-scrollbar {
            height: 6px;
        }

        .bf-hot-matches::-webkit-scrollbar-track {
            background: var(--bf-border);
            border-radius: 3px;
        }

        .bf-hot-matches::-webkit-scrollbar-thumb {
            background: var(--bf-green);
            border-radius: 3px;
        }

        .bf-hot-match-card {
            flex: 0 0 260px;
            scroll-snap-align: start;
            background: var(--bf-card);
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-md);
            overflow: hidden;
            box-shadow: var(--bf-shadow-sm);
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }

        .bf-hot-match-card:hover {
            box-shadow: var(--bf-shadow-md);
            transform: translateY(-2px);
        }

        .bf-hot-match-card img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }

        .bf-hot-match-body {
            padding: 14px 16px;
        }

        .bf-hot-match-body .bf-hot-teams {
            font-size: 15px;
            font-weight: 700;
            color: var(--bf-text);
            margin-bottom: 4px;
            line-height: 1.5;
        }

        .bf-hot-match-body .bf-hot-meta {
            font-size: 12px;
            color: var(--bf-text-muted);
        }

        /* Info tip bar */
        .bf-info-tip {
            background: linear-gradient(135deg, rgba(198, 233, 0, 0.1) 0%, rgba(255, 122, 0, 0.06) 100%);
            border: 1px solid rgba(27, 94, 32, 0.15);
            border-radius: var(--bf-radius-md);
            padding: 24px 28px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .bf-info-tip-icon {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            background: var(--bf-green);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
        }

        .bf-info-tip-text {
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.8;
        }

        .bf-info-tip-text strong {
            color: var(--bf-green);
            font-weight: 700;
        }

        /* FAQ */
        .bf-faq-list .accordion-item {
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-md);
            margin-bottom: 12px;
            box-shadow: var(--bf-shadow-sm);
            overflow: hidden;
            background: var(--bf-card);
        }

        .bf-faq-list .accordion-button {
            background: var(--bf-card);
            color: var(--bf-text);
            font-weight: 600;
            font-size: 15px;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
            transition: all var(--bf-transition);
        }

        .bf-faq-list .accordion-button:not(.collapsed) {
            background: var(--bf-bg-green);
            color: var(--bf-green);
            box-shadow: none;
        }

        .bf-faq-list .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(27, 94, 32, 0.12);
            border: none;
        }

        .bf-faq-list .accordion-button::after {
            background-size: 14px;
            width: 14px;
            height: 14px;
            filter: invert(25%) sepia(40%) saturate(500%) hue-rotate(80deg);
        }

        .bf-faq-list .accordion-body {
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.9;
            padding: 16px 20px 20px;
            border-top: 1px solid var(--bf-border);
        }

        /* CTA section */
        .bf-cta-section {
            background: linear-gradient(135deg, var(--bf-green-dark) 0%, var(--bf-green) 70%);
            border-radius: var(--bf-radius-lg);
            padding: 40px 36px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .bf-cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(198, 233, 0, 0.08);
            pointer-events: none;
        }

        .bf-cta-section h2 {
            color: #fff;
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }

        .bf-cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 14px;
            margin-bottom: 0;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }

        .bf-cta-form {
            display: flex;
            gap: 10px;
            position: relative;
            z-index: 1;
        }

        .bf-cta-form input {
            flex: 1;
            padding: 12px 18px;
            border-radius: var(--bf-radius-input);
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color var(--bf-transition), background var(--bf-transition);
        }

        .bf-cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .bf-cta-form input:focus {
            border-color: var(--bf-lime);
            background: rgba(255, 255, 255, 0.18);
        }

        .bf-cta-form .bf-btn-cta {
            padding: 12px 22px;
            border-radius: var(--bf-radius-input);
            background: var(--bf-orange);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            white-space: nowrap;
            transition: background var(--bf-transition);
        }

        .bf-cta-form .bf-btn-cta:hover {
            background: var(--bf-orange-hover);
        }

        /* Buttons */
        .bf-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--bf-radius-sm);
            font-size: 14px;
            font-weight: 600;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all var(--bf-transition);
            text-decoration: none;
            line-height: 1.5;
        }

        .bf-btn-primary {
            background: var(--bf-green);
            color: #fff;
            border-color: var(--bf-green);
        }

        .bf-btn-primary:hover {
            background: var(--bf-green-dark);
            border-color: var(--bf-green-dark);
            color: #fff;
        }

        .bf-btn-outline {
            background: transparent;
            color: var(--bf-green);
            border-color: var(--bf-green);
        }

        .bf-btn-outline:hover {
            background: var(--bf-bg-green);
            border-color: var(--bf-green-dark);
            color: var(--bf-green-dark);
        }

        .bf-btn-orange {
            background: var(--bf-orange);
            color: #fff;
            border-color: var(--bf-orange);
        }

        .bf-btn-orange:hover {
            background: var(--bf-orange-hover);
            border-color: var(--bf-orange-hover);
            color: #fff;
        }

        /* Footer */
        .bf-footer {
            background: var(--bf-green-darker);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 20px;
            margin-top: var(--bf-section-gap);
        }

        .bf-footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 32px;
        }

        .bf-footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .bf-footer-text {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 0;
        }

        .bf-footer-link {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            padding: 4px 0;
            transition: color var(--bf-transition);
        }

        .bf-footer-link:hover {
            color: var(--bf-lime);
        }

        .bf-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* Responsive */
        @media (max-width: 991px) {
            .bf-pankou-card-inner {
                grid-template-columns: 140px 1fr 1fr 1fr;
            }

            .bf-pankou-col:nth-of-type(4) {
                border-right: none;
            }

            .bf-pankou-match {
                padding: 16px;
            }

            .bf-pankou-col {
                padding: 16px 12px;
            }

            .bf-footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .bf-cta-section {
                grid-template-columns: 1fr;
                padding: 28px 24px;
            }
        }

        @media (max-width: 767px) {
            .bf-header-search {
                display: none;
            }

            .bf-mobile-search-btn {
                display: inline-flex;
            }

            .bf-nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                gap: 6px;
                font-size: 16px;
                padding: 8px 14px;
            }

            .bf-nav {
                display: none;
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                gap: 2px;
                padding-top: 8px;
                border-top: 1px solid rgba(255, 255, 255, 0.12);
            }

            .bf-nav.open {
                display: flex;
            }

            .bf-nav-link {
                padding: 12px 16px;
                font-size: 15px;
                border-radius: var(--bf-radius-sm);
            }

            .bf-logo {
                font-size: 20px;
            }

            .bf-logo-icon {
                width: 28px;
                height: 28px;
                font-size: 16px;
            }

            .bf-cat-header h1 {
                font-size: 28px;
            }

            .bf-cat-header {
                padding: 36px 0 24px;
            }

            .bf-section-title {
                font-size: 22px;
            }

            .bf-filter-toolbar {
                padding: 12px 14px;
                gap: 10px;
            }

            .bf-filter-sort {
                margin-left: 0;
                width: 100%;
            }

            .bf-filter-sort select {
                width: 100%;
            }

            .bf-pankou-card-inner {
                grid-template-columns: 1fr;
            }

            .bf-pankou-match {
                border-right: none;
                border-bottom: 1px solid var(--bf-border);
            }

            .bf-pankou-col {
                border-right: none;
                border-bottom: 1px solid var(--bf-border);
                padding: 14px 16px;
                display: flex;
                align-items: center;
                justify-content: space-between;
                text-align: left;
            }

            .bf-pankou-col .bf-col-label {
                margin-bottom: 0;
                font-weight: 600;
            }

            .bf-pankou-col .bf-col-value {
                font-size: 18px;
                text-align: right;
            }

            .bf-pankou-note {
                padding: 12px 14px;
                font-size: 12px;
            }

            .bf-footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .bf-footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .bf-info-tip {
                flex-direction: column;
                padding: 20px;
            }

            .bf-hot-match-card {
                flex: 0 0 220px;
            }

            .bf-pagination-wrapper {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .bf-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .bf-cat-header h1 {
                font-size: 24px;
            }

            .bf-cat-header p {
                font-size: 15px;
            }

            .bf-section {
                padding-top: 40px;
                padding-bottom: 40px;
            }

            .bf-section-title {
                font-size: 20px;
            }

            .bf-pankou-col .bf-col-value {
                font-size: 16px;
            }

            .bf-hot-match-card {
                flex: 0 0 200px;
            }

            .bf-cta-section {
                padding: 20px 16px;
                border-radius: var(--bf-radius-md);
            }

            .bf-cta-form {
                flex-direction: column;
            }

            .bf-cta-form .bf-btn-cta {
                width: 100%;
            }
        }

        /* Focus accessibility */
        .bf-nav-link:focus-visible,
        .bf-btn:focus-visible,
        .bf-page-btn:focus-visible,
        .bf-footer-link:focus-visible,
        .bf-filter-tag:focus-visible {
            outline: 3px solid var(--bf-orange);
            outline-offset: 2px;
        }

        .bf-header-search input:focus-visible,
        .bf-mobile-search-input:focus-visible,
        .bf-cta-form input:focus-visible,
        .bf-filter-sort select:focus-visible {
            outline: none;
            border-color: var(--bf-orange);
            box-shadow: 0 0 0 3px rgba(255, 122, 0, 0.2);
        }

/* roulang page: category4 */
:root {
            --bf-green: #1B5E20;
            --bf-green-dark: #0F3D13;
            --bf-green-darker: #16281A;
            --bf-orange: #FF7A00;
            --bf-orange-hover: #E66D00;
            --bf-lime: #C6E900;
            --bf-bg: #F5F3EE;
            --bf-bg-green: #F4F7F2;
            --bf-text: #1A1E1A;
            --bf-text-secondary: #5A625A;
            --bf-text-muted: #7A827A;
            --bf-card: #FFFFFF;
            --bf-border: #E0E4DE;
            --bf-border-green: rgba(27, 94, 32, 0.18);
            --bf-shadow-sm: 0 2px 8px rgba(27, 94, 32, 0.06);
            --bf-shadow-md: 0 4px 16px rgba(27, 94, 32, 0.08);
            --bf-shadow-lg: 0 8px 24px rgba(27, 94, 32, 0.14);
            --bf-radius-sm: 8px;
            --bf-radius-md: 12px;
            --bf-radius-lg: 16px;
            --bf-radius-full: 999px;
            --bf-radius-input: 10px;
            --bf-font-mono: 'Roboto Mono', 'SF Mono', 'Menlo', 'Consolas', monospace;
            --bf-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --bf-gutter: 24px;
            --bf-section-gap: 56px;
            --bf-transition: 0.2s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: var(--bf-font-sans);
            color: var(--bf-text);
            background-color: var(--bf-bg);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--bf-green);
            text-decoration: none;
            transition: color var(--bf-transition);
        }
        a:hover {
            color: var(--bf-orange);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: var(--bf-font-sans);
            font-size: 16px;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--bf-orange);
            outline-offset: 2px;
        }
        .bf-container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 768px) {
            .bf-container {
                padding-left: 28px;
                padding-right: 28px;
            }
        }
        @media (min-width: 1024px) {
            .bf-container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        /* Header */
        .bf-header {
            background: var(--bf-green-dark);
            border-bottom: 3px solid var(--bf-orange);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
        }
        .bf-header-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 12px 20px;
        }
        .bf-logo {
            font-size: 24px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.2;
        }
        .bf-logo:hover {
            color: var(--bf-lime);
        }
        .bf-logo-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            background: var(--bf-orange);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            line-height: 1;
        }
        .bf-header-search {
            flex: 1 1 280px;
            min-width: 200px;
            max-width: 420px;
            position: relative;
            display: flex;
            align-items: center;
        }
        .bf-header-search input {
            width: 100%;
            padding: 10px 16px 10px 44px;
            border-radius: var(--bf-radius-full);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color var(--bf-transition), box-shadow var(--bf-transition), background var(--bf-transition);
        }
        .bf-header-search input::placeholder {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
        }
        .bf-header-search input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198, 233, 0, 0.15), 0 0 0 5px rgba(255, 122, 0, 0.1);
            background: rgba(255, 255, 255, 0.16);
        }
        .bf-search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            pointer-events: none;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
        }
        .bf-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .bf-nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--bf-radius-sm);
            transition: color var(--bf-transition), background var(--bf-transition);
            white-space: nowrap;
        }
        .bf-nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .bf-nav-link.active {
            color: var(--bf-lime);
            background: rgba(198, 233, 0, 0.1);
        }
        .bf-nav-toggle {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.35);
            border-radius: var(--bf-radius-sm);
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 4px;
            cursor: pointer;
            padding: 0;
        }
        .bf-nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: transform var(--bf-transition), opacity var(--bf-transition);
        }
        .bf-nav-toggle.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        .bf-nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .bf-nav-toggle.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }
        /* Mobile search overlay */
        .bf-mobile-search-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(13, 20, 13, 0.96);
            z-index: 2000;
            padding: 20px;
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            padding-top: 60px;
        }
        .bf-mobile-search-overlay.show {
            display: flex;
        }
        .bf-mobile-search-close {
            position: absolute;
            top: 16px;
            right: 16px;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--bf-radius-sm);
            width: 40px;
            height: 40px;
            color: #fff;
            font-size: 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--bf-transition);
        }
        .bf-mobile-search-close:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        .bf-mobile-search-overlay input {
            width: 100%;
            max-width: 500px;
            padding: 14px 20px;
            border-radius: var(--bf-radius-input);
            border: 1.5px solid rgba(198, 233, 0, 0.4);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 16px;
            outline: none;
        }
        .bf-mobile-search-overlay input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        /* Mobile nav drawer */
        .bf-nav-drawer {
            display: none;
            background: var(--bf-green-dark);
            padding: 12px 20px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            flex-direction: column;
            gap: 4px;
        }
        .bf-nav-drawer.open {
            display: flex;
        }
        .bf-nav-drawer .bf-nav-link {
            padding: 12px 16px;
            font-size: 15px;
            border-radius: var(--bf-radius-sm);
        }
        /* Breadcrumb */
        .bf-breadcrumb-bar {
            background: var(--bf-bg-green);
            border-bottom: 1px solid var(--bf-border);
            padding: 10px 0;
        }
        .bf-breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--bf-text-muted);
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .bf-breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .bf-breadcrumb li+li::before {
            content: '/';
            color: var(--bf-border);
            font-size: 12px;
        }
        .bf-breadcrumb a {
            color: var(--bf-green);
        }
        .bf-breadcrumb a:hover {
            color: var(--bf-orange);
        }
        /* Sections */
        .bf-section {
            padding: var(--bf-section-gap) 0;
        }
        .bf-section-sm {
            padding: 32px 0;
        }
        .bf-section-alt {
            background: var(--bf-bg-green);
        }
        .bf-section-dark {
            background: var(--bf-green-darker);
            color: #fff;
        }
        .bf-section-title {
            font-size: 26px;
            font-weight: 800;
            color: var(--bf-text);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
            line-height: 1.4;
        }
        .bf-section-subtitle {
            font-size: 15px;
            color: var(--bf-text-secondary);
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .bf-section-dark .bf-section-title {
            color: #fff;
        }
        .bf-section-dark .bf-section-subtitle {
            color: rgba(255, 255, 255, 0.75);
        }
        /* H1 header area for category */
        .bf-cat-header {
            background: var(--bf-green-darker);
            color: #fff;
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }
        .bf-cat-header::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: linear-gradient(135deg, transparent 40%, rgba(198, 233, 0, 0.08) 60%, rgba(255, 122, 0, 0.12) 100%);
            pointer-events: none;
        }
        .bf-cat-header h1 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            line-height: 1.4;
            position: relative;
            z-index: 1;
        }
        .bf-cat-header p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.78);
            max-width: 680px;
            margin-bottom: 0;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }
        .bf-cat-header .bf-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
            position: relative;
            z-index: 1;
        }
        /* Badges */
        .bf-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: var(--bf-radius-full);
            font-size: 12px;
            font-weight: 600;
            line-height: 1.6;
            white-space: nowrap;
        }
        .bf-badge-green {
            background: rgba(27, 94, 32, 0.12);
            color: var(--bf-green);
            border: 1px solid var(--bf-border-green);
        }
        .bf-badge-orange {
            background: rgba(255, 122, 0, 0.12);
            color: var(--bf-orange);
            border: 1px solid rgba(255, 122, 0, 0.25);
        }
        .bf-badge-lime {
            background: rgba(198, 233, 0, 0.18);
            color: var(--bf-green-dark);
            border: 1px solid rgba(198, 233, 0, 0.4);
        }
        .bf-badge-dark {
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        /* Filter toolbar */
        .bf-filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 16px;
            background: var(--bf-card);
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-md);
            padding: 14px 20px;
            box-shadow: var(--bf-shadow-sm);
        }
        .bf-filter-group {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
        }
        .bf-filter-label {
            font-size: 13px;
            color: var(--bf-text-muted);
            font-weight: 600;
            margin-right: 4px;
            white-space: nowrap;
        }
        .bf-filter-chip {
            padding: 5px 14px;
            border-radius: var(--bf-radius-full);
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--bf-border);
            background: var(--bf-bg-green);
            color: var(--bf-text-secondary);
            cursor: pointer;
            transition: all var(--bf-transition);
            white-space: nowrap;
        }
        .bf-filter-chip:hover {
            border-color: var(--bf-green);
            color: var(--bf-green);
            background: #fff;
        }
        .bf-filter-chip.active {
            background: var(--bf-green);
            color: #fff;
            border-color: var(--bf-green);
        }
        .bf-filter-select {
            padding: 6px 28px 6px 12px;
            border-radius: var(--bf-radius-sm);
            border: 1px solid var(--bf-border);
            background: var(--bf-card);
            color: var(--bf-text);
            font-size: 13px;
            cursor: pointer;
            outline: none;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235A625A' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 10px center;
            transition: border-color var(--bf-transition);
        }
        .bf-filter-select:focus {
            border-color: var(--bf-green);
        }
        /* Intelligence brief card list */
        .bf-brief-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 28px;
        }
        .bf-brief-card {
            display: flex;
            flex-direction: row;
            background: var(--bf-card);
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-lg);
            overflow: hidden;
            box-shadow: var(--bf-shadow-sm);
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }
        .bf-brief-card:hover {
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-2px);
        }
        .bf-brief-img {
            flex: 0 0 220px;
            max-width: 220px;
            min-height: 180px;
            background: var(--bf-bg-green);
            position: relative;
            overflow: hidden;
        }
        .bf-brief-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 180px;
        }
        .bf-brief-body {
            flex: 1;
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 12px;
        }
        .bf-brief-top {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px 12px;
        }
        .bf-brief-team {
            font-size: 18px;
            font-weight: 700;
            color: var(--bf-text);
            line-height: 1.4;
        }
        .bf-brief-league {
            font-size: 12px;
            color: var(--bf-text-muted);
            background: var(--bf-bg-green);
            padding: 3px 10px;
            border-radius: var(--bf-radius-full);
            font-weight: 500;
        }
        .bf-brief-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .bf-brief-summary {
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }
        .bf-brief-footer {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px 16px;
        }
        .bf-brief-time {
            font-size: 13px;
            color: var(--bf-text-muted);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .bf-brief-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--bf-green);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--bf-transition);
        }
        .bf-brief-link:hover {
            color: var(--bf-orange);
        }
        /* Pagination */
        .bf-pagination {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .bf-page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border-radius: var(--bf-radius-sm);
            border: 1px solid var(--bf-border);
            background: var(--bf-card);
            color: var(--bf-text-secondary);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--bf-transition);
            text-decoration: none;
        }
        .bf-page-btn:hover {
            border-color: var(--bf-green);
            color: var(--bf-green);
            background: var(--bf-bg-green);
        }
        .bf-page-btn.active {
            background: var(--bf-green);
            color: #fff;
            border-color: var(--bf-green);
        }
        .bf-page-btn.disabled {
            opacity: 0.45;
            pointer-events: none;
        }
        /* Hot matches horizontal strip */
        .bf-hot-strip {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 8px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }
        .bf-hot-strip::-webkit-scrollbar {
            height: 6px;
        }
        .bf-hot-strip::-webkit-scrollbar-track {
            background: var(--bf-border);
            border-radius: 3px;
        }
        .bf-hot-strip::-webkit-scrollbar-thumb {
            background: var(--bf-green);
            border-radius: 3px;
        }
        .bf-hot-card {
            flex: 0 0 260px;
            scroll-snap-align: start;
            background: var(--bf-card);
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-md);
            overflow: hidden;
            box-shadow: var(--bf-shadow-sm);
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }
        .bf-hot-card:hover {
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-3px);
        }
        .bf-hot-card-img {
            height: 140px;
            background: var(--bf-bg-green);
            overflow: hidden;
        }
        .bf-hot-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .bf-hot-card-body {
            padding: 14px 16px;
        }
        .bf-hot-card-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--bf-text);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .bf-hot-card-meta {
            font-size: 12px;
            color: var(--bf-text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        /* Info strip */
        .bf-info-strip {
            background: var(--bf-bg-green);
            border-left: 4px solid var(--bf-orange);
            border-radius: var(--bf-radius-sm);
            padding: 18px 22px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            align-items: flex-start;
        }
        .bf-info-strip-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            background: var(--bf-orange);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            line-height: 1;
        }
        .bf-info-strip-content {
            flex: 1;
            min-width: 220px;
        }
        .bf-info-strip-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--bf-text);
            margin-bottom: 4px;
        }
        .bf-info-strip-text {
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }
        /* FAQ */
        .bf-accordion-item {
            background: var(--bf-card);
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--bf-shadow-sm);
            transition: box-shadow var(--bf-transition);
        }
        .bf-accordion-item:hover {
            box-shadow: var(--bf-shadow-md);
        }
        .bf-accordion-header {
            width: 100%;
            background: none;
            border: none;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 650;
            color: var(--bf-text);
            text-align: left;
            transition: background var(--bf-transition), color var(--bf-transition);
        }
        .bf-accordion-header:hover {
            background: var(--bf-bg-green);
            color: var(--bf-green);
        }
        .bf-accordion-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--bf-bg-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: var(--bf-green);
            transition: transform var(--bf-transition);
        }
        .bf-accordion-item.open .bf-accordion-icon {
            transform: rotate(45deg);
        }
        .bf-accordion-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .bf-accordion-item.open .bf-accordion-body {
            max-height: 300px;
            padding-bottom: 18px;
        }
        .bf-accordion-body p {
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.85;
            margin-bottom: 0;
        }
        /* CTA */
        .bf-cta-section {
            background: var(--bf-green-darker);
            color: #fff;
            padding: 48px 0;
        }
        .bf-cta-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 32px;
            align-items: center;
        }
        .bf-cta-title {
            font-size: 24px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .bf-cta-text {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 0;
        }
        .bf-cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .bf-cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border-radius: var(--bf-radius-input);
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color var(--bf-transition), box-shadow var(--bf-transition);
        }
        .bf-cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .bf-cta-form input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198, 233, 0, 0.18);
        }
        .bf-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--bf-radius-sm);
            font-size: 14px;
            font-weight: 650;
            border: none;
            cursor: pointer;
            transition: all var(--bf-transition);
            white-space: nowrap;
            text-decoration: none;
            line-height: 1.4;
        }
        .bf-btn-primary {
            background: var(--bf-orange);
            color: #fff;
        }
        .bf-btn-primary:hover {
            background: var(--bf-orange-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255, 122, 0, 0.3);
        }
        .bf-btn-green {
            background: var(--bf-green);
            color: #fff;
        }
        .bf-btn-green:hover {
            background: var(--bf-green-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(27, 94, 32, 0.3);
        }
        .bf-btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
        }
        .bf-btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.7);
        }
        .bf-btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        /* Footer */
        .bf-footer {
            background: var(--bf-green-darker);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 24px;
        }
        .bf-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .bf-footer-title {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .bf-footer-text {
            font-size: 13px;
            line-height: 1.8;
            margin-bottom: 0;
            color: rgba(255, 255, 255, 0.6);
        }
        .bf-footer-link {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            padding: 4px 0;
            transition: color var(--bf-transition), padding-left var(--bf-transition);
        }
        .bf-footer-link:hover {
            color: var(--bf-lime);
            padding-left: 4px;
        }
        .bf-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px 16px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .bf-header-inner {
                gap: 10px 14px;
            }
            .bf-header-search {
                max-width: 320px;
            }
            .bf-brief-img {
                flex: 0 0 180px;
                max-width: 180px;
            }
            .bf-footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .bf-cta-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --bf-section-gap: 40px;
            }
            .bf-header-inner {
                flex-direction: row;
                flex-wrap: wrap;
                padding-top: 10px;
                padding-bottom: 10px;
                gap: 8px 12px;
            }
            .bf-header-search {
                order: 3;
                flex: 1 1 100%;
                max-width: 100%;
            }
            .bf-nav {
                display: none;
            }
            .bf-nav-toggle {
                display: flex;
            }
            .bf-nav-drawer {
                display: none;
            }
            .bf-nav-drawer.open {
                display: flex;
            }
            .bf-cat-header {
                padding: 32px 0 28px;
            }
            .bf-cat-header h1 {
                font-size: 26px;
            }
            .bf-cat-header p {
                font-size: 14px;
            }
            .bf-section-title {
                font-size: 22px;
            }
            .bf-brief-card {
                flex-direction: column;
            }
            .bf-brief-img {
                flex: none;
                max-width: 100%;
                width: 100%;
                height: 180px;
                min-height: auto;
            }
            .bf-brief-img img {
                min-height: auto;
                height: 180px;
            }
            .bf-brief-body {
                padding: 16px 18px;
            }
            .bf-brief-team {
                font-size: 16px;
            }
            .bf-footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .bf-filter-bar {
                padding: 12px 14px;
            }
            .bf-hot-card {
                flex: 0 0 220px;
            }
            .bf-info-strip {
                padding: 14px 16px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --bf-section-gap: 32px;
            }
            .bf-cat-header h1 {
                font-size: 24px;
            }
            .bf-section-title {
                font-size: 20px;
            }
            .bf-brief-summary {
                font-size: 13px;
            }
            .bf-brief-footer {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .bf-cta-title {
                font-size: 20px;
            }
            .bf-cta-form {
                flex-direction: column;
            }
            .bf-cta-form input {
                min-width: 100%;
            }
            .bf-footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .bf-breadcrumb {
                font-size: 12px;
            }
            .bf-pagination {
                gap: 4px;
            }
            .bf-page-btn {
                min-width: 32px;
                height: 32px;
                padding: 0 8px;
                font-size: 12px;
            }
        }

/* roulang page: category5 */
:root {
            --bf-green: #1B5E20;
            --bf-green-dark: #0F3D13;
            --bf-green-darker: #16281A;
            --bf-orange: #FF7A00;
            --bf-orange-hover: #E66D00;
            --bf-lime: #C6E900;
            --bf-bg: #F5F3EE;
            --bf-bg-green: #F4F7F2;
            --bf-text: #1A1E1A;
            --bf-text-secondary: #5A625A;
            --bf-text-muted: #7A827A;
            --bf-card: #FFFFFF;
            --bf-border: #E0E4DE;
            --bf-border-green: rgba(27, 94, 32, 0.18);
            --bf-shadow-sm: 0 2px 8px rgba(27, 94, 32, 0.06);
            --bf-shadow-md: 0 4px 16px rgba(27, 94, 32, 0.08);
            --bf-shadow-lg: 0 8px 24px rgba(27, 94, 32, 0.14);
            --bf-radius-sm: 8px;
            --bf-radius-md: 12px;
            --bf-radius-lg: 16px;
            --bf-radius-full: 999px;
            --bf-radius-input: 10px;
            --bf-font-mono: 'Roboto Mono', 'SF Mono', 'Menlo', 'Consolas', monospace;
            --bf-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --bf-gutter: 24px;
            --bf-section-gap: 56px;
            --bf-transition: 0.2s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--bf-font-sans);
            color: var(--bf-text);
            background-color: var(--bf-bg);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--bf-green);
            text-decoration: none;
            transition: color var(--bf-transition);
        }
        a:hover {
            color: var(--bf-orange);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: var(--bf-font-sans);
            font-size: 16px;
        }
        .bf-container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 28px;
            padding-right: 28px;
        }
        .bf-header {
            background: var(--bf-green-dark);
            border-bottom: 3px solid var(--bf-orange);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
        }
        .bf-header-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 12px 20px;
        }
        .bf-logo {
            font-size: 24px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.2;
        }
        .bf-logo:hover {
            color: var(--bf-lime);
        }
        .bf-logo-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            background: var(--bf-orange);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            line-height: 1;
        }
        .bf-header-search {
            flex: 1 1 280px;
            min-width: 200px;
            max-width: 420px;
            position: relative;
            display: flex;
            align-items: center;
        }
        .bf-header-search input {
            width: 100%;
            padding: 10px 16px 10px 44px;
            border-radius: var(--bf-radius-full);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color var(--bf-transition), box-shadow var(--bf-transition), background var(--bf-transition);
        }
        .bf-header-search input::placeholder {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
        }
        .bf-header-search input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198, 233, 0, 0.15), 0 0 0 5px rgba(255, 122, 0, 0.1);
            background: rgba(255, 255, 255, 0.16);
        }
        .bf-search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            pointer-events: none;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
        }
        .bf-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .bf-nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--bf-radius-sm);
            transition: color var(--bf-transition), background var(--bf-transition);
            white-space: nowrap;
        }
        .bf-nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .bf-nav-link.active {
            color: var(--bf-lime);
            background: rgba(198, 233, 0, 0.1);
        }
        .bf-nav-toggle {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--bf-radius-sm);
            color: #fff;
            width: 40px;
            height: 36px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background var(--bf-transition);
        }
        .bf-nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .bf-nav-toggle svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
        }
        .bf-mobile-nav {
            display: none;
            background: var(--bf-green-darker);
            padding: 12px 20px 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .bf-mobile-nav .bf-nav-link {
            display: block;
            padding: 10px 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 0;
        }
        .bf-mobile-nav .bf-nav-link:last-child {
            border-bottom: none;
        }
        .bf-mobile-nav.show {
            display: block;
        }
        .bf-breadcrumb-bar {
            background: var(--bf-bg-green);
            border-bottom: 1px solid var(--bf-border);
            padding: 10px 0;
        }
        .bf-breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--bf-text-muted);
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .bf-breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .bf-breadcrumb li + li::before {
            content: '/';
            color: var(--bf-text-muted);
            font-size: 12px;
        }
        .bf-breadcrumb a {
            color: var(--bf-text-secondary);
        }
        .bf-breadcrumb a:hover {
            color: var(--bf-orange);
        }
        .bf-main {
            padding-bottom: var(--bf-section-gap);
        }
        .bf-section {
            padding: var(--bf-section-gap) 0 0;
        }
        .bf-section:first-child {
            padding-top: 36px;
        }
        .bf-section-title-wrap {
            margin-bottom: 28px;
        }
        .bf-section-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--bf-text);
            margin: 0 0 8px;
            line-height: 1.35;
            letter-spacing: 0.3px;
        }
        .bf-section-subtitle {
            font-size: 15px;
            color: var(--bf-text-secondary);
            margin: 0;
            line-height: 1.7;
        }
        .bf-page-h1 {
            font-size: 36px;
            font-weight: 800;
            color: var(--bf-green-dark);
            margin: 0 0 8px;
            line-height: 1.3;
        }
        .bf-page-desc {
            font-size: 16px;
            color: var(--bf-text-secondary);
            margin: 0;
            max-width: 760px;
            line-height: 1.85;
        }
        .bf-filter-bar {
            background: var(--bf-card);
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-md);
            padding: 14px 18px;
            box-shadow: var(--bf-shadow-sm);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px 14px;
        }
        .bf-filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: var(--bf-bg-green);
            color: var(--bf-green);
            font-size: 13px;
            font-weight: 500;
            padding: 6px 12px;
            border-radius: var(--bf-radius-full);
            border: 1px solid var(--bf-border-green);
        }
        .bf-filter-tag.active {
            background: var(--bf-green);
            color: #fff;
            border-color: var(--bf-green);
        }
        .bf-filter-label {
            font-size: 13px;
            color: var(--bf-text-muted);
            white-space: nowrap;
        }
        .bf-filter-select {
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-sm);
            padding: 6px 10px;
            font-size: 13px;
            color: var(--bf-text-secondary);
            outline: none;
            background: #fff;
            cursor: pointer;
            transition: border-color var(--bf-transition);
        }
        .bf-filter-select:focus {
            border-color: var(--bf-green);
        }
        .bf-article-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .bf-article-card {
            background: var(--bf-card);
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-lg);
            overflow: hidden;
            box-shadow: var(--bf-shadow-sm);
            transition: box-shadow var(--bf-transition), transform var(--bf-transition), border-color var(--bf-transition);
            display: flex;
            flex-direction: column;
        }
        .bf-article-card:hover {
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-2px);
            border-color: var(--bf-border-green);
        }
        .bf-article-card-inner {
            display: flex;
            flex-direction: row;
            gap: 0;
            flex: 1;
            min-height: 220px;
        }
        .bf-article-thumb {
            width: 260px;
            flex-shrink: 0;
            position: relative;
            overflow: hidden;
            background: var(--bf-bg-green);
            min-height: 220px;
        }
        .bf-article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
        }
        .bf-article-thumb::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, rgba(15, 61, 19, 0.55), transparent);
            pointer-events: none;
        }
        .bf-article-thumb-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--bf-orange);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--bf-radius-full);
            z-index: 2;
            letter-spacing: 0.3px;
        }
        .bf-article-body {
            flex: 1;
            padding: 22px 26px;
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            gap: 10px;
        }
        .bf-article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px 16px;
            font-size: 12px;
            color: var(--bf-text-muted);
        }
        .bf-article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .bf-article-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--bf-text);
            margin: 0;
            line-height: 1.45;
            transition: color var(--bf-transition);
        }
        .bf-article-card:hover .bf-article-title {
            color: var(--bf-green);
        }
        .bf-article-excerpt {
            font-size: 14px;
            color: var(--bf-text-secondary);
            margin: 0;
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .bf-article-card-footer {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 12px;
            border-top: 1px solid var(--bf-border);
        }
        .bf-article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .bf-tag {
            display: inline-block;
            background: var(--bf-bg-green);
            color: var(--bf-green);
            font-size: 12px;
            padding: 3px 10px;
            border-radius: var(--bf-radius-full);
            border: 1px solid var(--bf-border-green);
            transition: background var(--bf-transition), color var(--bf-transition);
        }
        .bf-tag:hover {
            background: var(--bf-green);
            color: #fff;
        }
        .bf-article-read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--bf-orange);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--bf-transition), color var(--bf-transition);
        }
        .bf-article-read-more:hover {
            color: var(--bf-orange-hover);
            gap: 8px;
        }
        .bf-pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 28px;
            flex-wrap: wrap;
        }
        .bf-page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border-radius: var(--bf-radius-sm);
            border: 1px solid var(--bf-border);
            background: #fff;
            color: var(--bf-text-secondary);
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--bf-transition);
        }
        .bf-page-btn:hover {
            border-color: var(--bf-green);
            color: var(--bf-green);
            background: var(--bf-bg-green);
        }
        .bf-page-btn.active {
            background: var(--bf-green);
            border-color: var(--bf-green);
            color: #fff;
        }
        .bf-page-btn.disabled {
            opacity: 0.5;
            pointer-events: none;
        }
        .bf-hot-scroll {
            display: flex;
            gap: 18px;
            overflow-x: auto;
            padding-bottom: 12px;
            scroll-snap-type: x proximity;
        }
        .bf-hot-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .bf-hot-scroll::-webkit-scrollbar-track {
            background: var(--bf-bg-green);
            border-radius: 3px;
        }
        .bf-hot-scroll::-webkit-scrollbar-thumb {
            background: var(--bf-border-green);
            border-radius: 3px;
        }
        .bf-hot-card {
            min-width: 260px;
            max-width: 280px;
            background: var(--bf-card);
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-lg);
            overflow: hidden;
            box-shadow: var(--bf-shadow-sm);
            scroll-snap-align: start;
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
            flex-shrink: 0;
        }
        .bf-hot-card:hover {
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-3px);
        }
        .bf-hot-card-img {
            height: 140px;
            overflow: hidden;
        }
        .bf-hot-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .bf-hot-card-body {
            padding: 14px 16px 16px;
        }
        .bf-hot-card-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--bf-text);
            margin: 0 0 6px;
            line-height: 1.4;
        }
        .bf-hot-card-info {
            font-size: 12px;
            color: var(--bf-text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 4px 10px;
        }
        .bf-info-tip-bar {
            background: var(--bf-bg-green);
            border-left: 4px solid var(--bf-lime);
            border-radius: 0 var(--bf-radius-md) var(--bf-radius-md) 0;
            padding: 20px 24px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            flex-wrap: wrap;
        }
        .bf-info-tip-icon {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            background: var(--bf-green);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }
        .bf-info-tip-content {
            flex: 1;
            min-width: 240px;
        }
        .bf-info-tip-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--bf-green-dark);
            margin: 0 0 6px;
        }
        .bf-info-tip-text {
            font-size: 14px;
            color: var(--bf-text-secondary);
            margin: 0;
            line-height: 1.75;
        }
        .bf-faq-section {
            background: var(--bf-card);
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-lg);
            padding: 28px;
            box-shadow: var(--bf-shadow-sm);
        }
        .bf-accordion .accordion-item {
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            background: transparent;
        }
        .bf-accordion .accordion-button {
            background: var(--bf-bg-green);
            color: var(--bf-text);
            font-weight: 600;
            font-size: 15px;
            padding: 14px 18px;
            border-radius: var(--bf-radius-md) !important;
            box-shadow: none;
            transition: background var(--bf-transition), color var(--bf-transition);
        }
        .bf-accordion .accordion-button:not(.collapsed) {
            background: var(--bf-green);
            color: #fff;
            box-shadow: none;
        }
        .bf-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(27, 94, 32, 0.2);
        }
        .bf-accordion .accordion-button::after {
            filter: brightness(0.8);
        }
        .bf-accordion .accordion-button:not(.collapsed)::after {
            filter: brightness(0) invert(1);
        }
        .bf-accordion .accordion-body {
            padding: 16px 18px;
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.8;
            background: #fff;
        }
        .bf-cta-bar {
            background: var(--bf-green-dark);
            border-radius: var(--bf-radius-lg);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .bf-cta-bar::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -30px;
            width: 180px;
            height: 180px;
            background: rgba(198, 233, 0, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }
        .bf-cta-bar::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: 20%;
            width: 220px;
            height: 220px;
            background: rgba(255, 122, 0, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        .bf-cta-content {
            position: relative;
            z-index: 1;
            flex: 1;
            min-width: 240px;
        }
        .bf-cta-title {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin: 0 0 8px;
        }
        .bf-cta-text {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin: 0;
            line-height: 1.7;
        }
        .bf-cta-form {
            position: relative;
            z-index: 1;
            display: flex;
            gap: 10px;
            min-width: 280px;
            flex-shrink: 0;
        }
        .bf-cta-form input {
            flex: 1;
            padding: 12px 16px;
            border-radius: var(--bf-radius-input);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            outline: none;
            min-width: 200px;
            transition: border-color var(--bf-transition), box-shadow var(--bf-transition);
        }
        .bf-cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }
        .bf-cta-form input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198, 233, 0, 0.15);
        }
        .bf-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: var(--bf-radius-sm);
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--bf-transition);
            white-space: nowrap;
            letter-spacing: 0.2px;
        }
        .bf-btn-primary {
            background: var(--bf-green);
            color: #fff;
        }
        .bf-btn-primary:hover {
            background: var(--bf-green-dark);
            color: #fff;
        }
        .bf-btn-orange {
            background: var(--bf-orange);
            color: #fff;
        }
        .bf-btn-orange:hover {
            background: var(--bf-orange-hover);
            color: #fff;
        }
        .bf-btn-outline-light {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            color: #fff;
        }
        .bf-btn-outline-light:hover {
            border-color: var(--bf-lime);
            color: var(--bf-lime);
            background: rgba(198, 233, 0, 0.08);
        }
        .bf-footer {
            background: var(--bf-green-darker);
            color: rgba(255, 255, 255, 0.85);
            padding-top: 48px;
            padding-bottom: 0;
            border-top: 3px solid var(--bf-orange);
        }
        .bf-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 36px;
            padding-bottom: 32px;
        }
        .bf-footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .bf-footer-text {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.75;
            margin: 0;
        }
        .bf-footer-link {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 8px;
            transition: color var(--bf-transition);
        }
        .bf-footer-link:hover {
            color: var(--bf-lime);
        }
        .bf-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }
        @media (max-width: 1024px) {
            .bf-container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .bf-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .bf-article-thumb {
                width: 220px;
                min-height: 200px;
            }
        }
        @media (max-width: 768px) {
            .bf-header-search {
                display: none;
            }
            .bf-nav {
                display: none;
            }
            .bf-nav-toggle {
                display: inline-flex;
            }
            .bf-logo {
                font-size: 20px;
            }
            .bf-page-h1 {
                font-size: 28px;
            }
            .bf-section-title {
                font-size: 22px;
            }
            .bf-article-card-inner {
                flex-direction: column;
            }
            .bf-article-thumb {
                width: 100%;
                min-height: 180px;
                max-height: 220px;
            }
            .bf-article-body {
                padding: 16px 18px;
            }
            .bf-section {
                padding-top: 40px;
            }
            .bf-footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .bf-cta-bar {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 20px;
            }
            .bf-cta-form {
                width: 100%;
                min-width: 0;
                flex-direction: column;
            }
            .bf-cta-form input {
                min-width: 0;
            }
        }
        @media (max-width: 520px) {
            .bf-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .bf-page-h1 {
                font-size: 24px;
            }
            .bf-filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .bf-article-title {
                font-size: 17px;
            }
            .bf-hot-card {
                min-width: 220px;
            }
            .bf-footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category6 */
:root {
            --bf-green: #1B5E20;
            --bf-green-dark: #0F3D13;
            --bf-green-darker: #16281A;
            --bf-orange: #FF7A00;
            --bf-orange-hover: #E66D00;
            --bf-lime: #C6E900;
            --bf-bg: #F5F3EE;
            --bf-bg-green: #F4F7F2;
            --bf-text: #1A1E1A;
            --bf-text-secondary: #5A625A;
            --bf-text-muted: #7A827A;
            --bf-card: #FFFFFF;
            --bf-border: #E0E4DE;
            --bf-border-green: rgba(27, 94, 32, 0.18);
            --bf-shadow-sm: 0 2px 8px rgba(27, 94, 32, 0.06);
            --bf-shadow-md: 0 4px 16px rgba(27, 94, 32, 0.08);
            --bf-shadow-lg: 0 8px 24px rgba(27, 94, 32, 0.14);
            --bf-radius-sm: 8px;
            --bf-radius-md: 12px;
            --bf-radius-lg: 16px;
            --bf-radius-full: 999px;
            --bf-radius-input: 10px;
            --bf-font-mono: 'Roboto Mono', 'SF Mono', 'Menlo', 'Consolas', monospace;
            --bf-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --bf-gutter: 24px;
            --bf-section-gap: 56px;
            --bf-transition: 0.2s ease;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--bf-font-sans);
            color: var(--bf-text);
            background-color: var(--bf-bg);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--bf-green);
            text-decoration: none;
            transition: color var(--bf-transition);
        }

        a:hover {
            color: var(--bf-orange);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: var(--bf-font-sans);
            font-size: 16px;
        }

        .bf-container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 28px;
            padding-right: 28px;
        }

        /* Header */
        .bf-header {
            background: var(--bf-green-dark);
            border-bottom: 3px solid var(--bf-orange);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
        }

        .bf-header-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 12px 20px;
        }

        .bf-logo {
            font-size: 24px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.2;
        }

        .bf-logo:hover {
            color: var(--bf-lime);
        }

        .bf-logo-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            background: var(--bf-orange);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            line-height: 1;
        }

        .bf-header-search {
            flex: 1 1 280px;
            min-width: 200px;
            max-width: 420px;
            position: relative;
            display: flex;
            align-items: center;
        }

        .bf-header-search input {
            width: 100%;
            padding: 10px 16px 10px 44px;
            border-radius: var(--bf-radius-full);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color var(--bf-transition), box-shadow var(--bf-transition), background var(--bf-transition);
        }

        .bf-header-search input::placeholder {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
        }

        .bf-header-search input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198, 233, 0, 0.15), 0 0 0 5px rgba(255, 122, 0, 0.1);
            background: rgba(255, 255, 255, 0.16);
        }

        .bf-search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            pointer-events: none;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
        }

        .bf-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .bf-nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--bf-radius-sm);
            transition: color var(--bf-transition), background var(--bf-transition);
            white-space: nowrap;
        }

        .bf-nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        .bf-nav-link.active {
            color: var(--bf-lime);
            background: rgba(198, 233, 0, 0.1);
        }

        .bf-nav-toggle {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            border-radius: var(--bf-radius-sm);
            padding: 6px 10px;
            font-size: 18px;
            line-height: 1;
            cursor: pointer;
        }

        .bf-nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .bf-search-mobile-btn {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            border-radius: 50%;
            width: 36px;
            height: 36px;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            cursor: pointer;
            flex-shrink: 0;
        }

        .bf-search-mobile-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .bf-mobile-search-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(22, 40, 26, 0.98);
            z-index: 2000;
            display: none;
            flex-direction: column;
            justify-content: center;
            padding: 32px 24px;
        }

        .bf-mobile-search-overlay.open {
            display: flex;
        }

        .bf-mobile-search-close {
            position: absolute;
            top: 16px;
            right: 20px;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            font-size: 22px;
            cursor: pointer;
        }

        .bf-mobile-search-close:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .bf-mobile-search-overlay input {
            width: 100%;
            padding: 14px 20px 14px 48px;
            border-radius: var(--bf-radius-input);
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 16px;
            outline: none;
            position: relative;
        }

        .bf-mobile-search-overlay input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .bf-mobile-search-overlay input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198, 233, 0, 0.15);
        }

        /* Breadcrumb */
        .bf-breadcrumb-band {
            background: var(--bf-bg-green);
            border-bottom: 1px solid var(--bf-border);
            padding: 10px 0;
        }

        .bf-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--bf-text-muted);
            flex-wrap: wrap;
        }

        .bf-breadcrumb a {
            color: var(--bf-green);
        }

        .bf-breadcrumb a:hover {
            color: var(--bf-orange);
        }

        .bf-breadcrumb-sep {
            color: var(--bf-text-muted);
            font-size: 11px;
        }

        /* Section base */
        .bf-section {
            padding-top: var(--bf-section-gap);
            padding-bottom: var(--bf-section-gap);
        }

        .bf-section-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--bf-text);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .bf-section-subtitle {
            font-size: 16px;
            color: var(--bf-text-secondary);
            margin-bottom: 28px;
            line-height: 1.7;
            max-width: 760px;
        }

        /* Category page hero head */
        .bf-cat-head {
            padding: 36px 0 24px;
            border-bottom: 2px solid var(--bf-border-green);
            margin-bottom: 28px;
        }

        .bf-cat-head h1 {
            font-size: 36px;
            font-weight: 800;
            color: var(--bf-text);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .bf-cat-head p {
            font-size: 16px;
            color: var(--bf-text-secondary);
            line-height: 1.8;
            max-width: 820px;
            margin-bottom: 0;
        }

        /* Filter bar */
        .bf-filter-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 14px 18px;
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            border: 1px solid var(--bf-border);
            box-shadow: var(--bf-shadow-sm);
            margin-bottom: 28px;
        }

        .bf-filter-label {
            font-size: 13px;
            color: var(--bf-text-muted);
            font-weight: 600;
            white-space: nowrap;
        }

        .bf-filter-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            flex: 1;
        }

        .bf-filter-tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: var(--bf-radius-full);
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--bf-border);
            background: var(--bf-bg);
            color: var(--bf-text-secondary);
            cursor: default;
            transition: all var(--bf-transition);
        }

        .bf-filter-tag.active {
            background: var(--bf-green);
            color: #fff;
            border-color: var(--bf-green);
        }

        .bf-filter-tag:hover {
            border-color: var(--bf-green);
            color: var(--bf-green);
        }

        .bf-filter-tag.active:hover {
            background: var(--bf-green-dark);
            color: #fff;
        }

        .bf-sort-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }

        .bf-sort-btn {
            display: inline-block;
            padding: 6px 12px;
            border-radius: var(--bf-radius-sm);
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--bf-border);
            background: #fff;
            color: var(--bf-text-secondary);
            cursor: default;
            transition: all var(--bf-transition);
            white-space: nowrap;
        }

        .bf-sort-btn.active {
            background: var(--bf-orange);
            color: #fff;
            border-color: var(--bf-orange);
        }

        .bf-sort-btn:hover {
            border-color: var(--bf-orange);
            color: var(--bf-orange);
        }

        .bf-sort-btn.active:hover {
            background: var(--bf-orange-hover);
            color: #fff;
        }

        /* Topic post list */
        .bf-topic-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .bf-topic-card {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            padding: 18px 20px;
            border: 1px solid var(--bf-border);
            box-shadow: var(--bf-shadow-sm);
            transition: box-shadow var(--bf-transition), transform var(--bf-transition), border-color var(--bf-transition);
        }

        .bf-topic-card:hover {
            box-shadow: var(--bf-shadow-lg);
            transform: translateY(-2px);
            border-color: var(--bf-border-green);
        }

        .bf-topic-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
            line-height: 1;
        }

        .bf-avatar-green {
            background: #1B5E20;
        }
        .bf-avatar-orange {
            background: #E66D00;
        }
        .bf-avatar-lime {
            background: #7A8C00;
            color: #1A1E1A;
        }
        .bf-avatar-dark {
            background: #3D2C1A;
        }
        .bf-avatar-midgreen {
            background: #3E7A3F;
        }
        .bf-avatar-ochre {
            background: #8C5A00;
        }

        .bf-topic-content {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .bf-topic-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--bf-text);
            line-height: 1.45;
            margin-bottom: 0;
        }

        .bf-topic-title a {
            color: var(--bf-text);
        }

        .bf-topic-title a:hover {
            color: var(--bf-orange);
        }

        .bf-topic-excerpt {
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .bf-topic-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 12px;
            color: var(--bf-text-muted);
        }

        .bf-topic-user {
            font-weight: 600;
            color: var(--bf-green);
        }

        .bf-topic-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: var(--bf-radius-full);
            font-size: 11px;
            font-weight: 500;
            background: var(--bf-bg-green);
            color: var(--bf-green);
            border: 1px solid var(--bf-border-green);
        }

        .bf-topic-thumb {
            flex-shrink: 0;
            width: 110px;
            height: 72px;
            border-radius: var(--bf-radius-sm);
            overflow: hidden;
        }

        .bf-topic-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .bf-topic-stats {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-left: auto;
            flex-shrink: 0;
            font-size: 12px;
            color: var(--bf-text-muted);
        }

        .bf-topic-stat {
            display: flex;
            align-items: center;
            gap: 4px;
            font-family: var(--bf-font-mono);
            white-space: nowrap;
        }

        .bf-topic-stat svg {
            width: 15px;
            height: 15px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        /* Pagination */
        .bf-pagination-bar {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .bf-page-btn {
            min-width: 38px;
            height: 38px;
            padding: 0 10px;
            border-radius: var(--bf-radius-sm);
            border: 1px solid var(--bf-border);
            background: #fff;
            color: var(--bf-text-secondary);
            font-size: 14px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: default;
            transition: all var(--bf-transition);
        }

        .bf-page-btn.active {
            background: var(--bf-green);
            border-color: var(--bf-green);
            color: #fff;
        }

        .bf-page-btn:hover {
            border-color: var(--bf-green);
            color: var(--bf-green);
        }

        .bf-page-btn.active:hover {
            background: var(--bf-green-dark);
            color: #fff;
        }

        .bf-page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* Horizontal scroll section */
        .bf-horizontal-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 12px;
            scroll-snap-type: x mandatory;
        }

        .bf-horizontal-scroll::-webkit-scrollbar {
            height: 6px;
        }

        .bf-horizontal-scroll::-webkit-scrollbar-track {
            background: var(--bf-bg);
            border-radius: 3px;
        }

        .bf-horizontal-scroll::-webkit-scrollbar-thumb {
            background: var(--bf-border-green);
            border-radius: 3px;
        }

        .bf-horizontal-scroll::-webkit-scrollbar-thumb:hover {
            background: var(--bf-green);
        }

        .bf-h-card {
            flex: 0 0 260px;
            scroll-snap-align: start;
            background: var(--bf-card);
            border-radius: var(--bf-radius-md);
            overflow: hidden;
            border: 1px solid var(--bf-border);
            box-shadow: var(--bf-shadow-sm);
            transition: box-shadow var(--bf-transition), transform var(--bf-transition);
        }

        .bf-h-card:hover {
            box-shadow: var(--bf-shadow-md);
            transform: translateY(-2px);
        }

        .bf-h-card-img {
            width: 100%;
            height: 130px;
            object-fit: cover;
        }

        .bf-h-card-body {
            padding: 14px 16px;
        }

        .bf-h-card-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--bf-text);
            line-height: 1.4;
            margin-bottom: 6px;
        }

        .bf-h-card-meta {
            font-size: 12px;
            color: var(--bf-text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .bf-h-card-tag {
            display: inline-block;
            padding: 2px 8px;
            border-radius: var(--bf-radius-full);
            font-size: 11px;
            font-weight: 500;
            background: var(--bf-orange);
            color: #fff;
        }

        /* Info strip */
        .bf-info-strip {
            background: var(--bf-bg-green);
            border: 1px solid var(--bf-border-green);
            border-radius: var(--bf-radius-md);
            padding: 20px 24px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .bf-info-strip-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bf-green);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bf-lime);
            font-size: 18px;
        }

        .bf-info-strip-content {
            flex: 1;
        }

        .bf-info-strip-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--bf-green-dark);
            margin-bottom: 6px;
        }

        .bf-info-strip-text {
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* FAQ style */
        .bf-faq-list .accordion-item {
            border: 1px solid var(--bf-border);
            border-radius: var(--bf-radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            background: var(--bf-card);
            box-shadow: var(--bf-shadow-sm);
        }

        .bf-faq-list .accordion-button {
            background: var(--bf-card);
            color: var(--bf-text);
            font-weight: 600;
            font-size: 15px;
            padding: 16px 20px;
            border: none;
            box-shadow: none;
        }

        .bf-faq-list .accordion-button:not(.collapsed) {
            background: var(--bf-bg-green);
            color: var(--bf-green-dark);
            box-shadow: none;
        }

        .bf-faq-list .accordion-button:focus {
            box-shadow: none;
            border-color: var(--bf-green);
        }

        .bf-faq-list .accordion-button::after {
            filter: invert(30%) sepia(50%) saturate(400%) hue-rotate(70deg);
        }

        .bf-faq-list .accordion-body {
            font-size: 14px;
            color: var(--bf-text-secondary);
            line-height: 1.8;
            padding: 16px 20px 20px;
        }

        /* CTA/Subscribe */
        .bf-cta-band {
            background: linear-gradient(135deg, var(--bf-green-dark) 0%, var(--bf-green) 55%, #1F7030 100%);
            border-radius: var(--bf-radius-lg);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
            box-shadow: var(--bf-shadow-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .bf-cta-band-text {
            flex: 1 1 300px;
            color: #fff;
        }

        .bf-cta-band-text h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .bf-cta-band-text p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 0;
            line-height: 1.7;
        }

        .bf-cta-band-form {
            flex: 1 1 280px;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .bf-cta-band-form input {
            flex: 1 1 180px;
            padding: 12px 18px;
            border-radius: var(--bf-radius-input);
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            outline: none;
        }

        .bf-cta-band-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .bf-cta-band-form input:focus {
            border-color: var(--bf-lime);
            box-shadow: 0 0 0 3px rgba(198, 233, 0, 0.15);
        }

        .bf-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--bf-radius-sm);
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all var(--bf-transition);
            white-space: nowrap;
        }

        .bf-btn-primary {
            background: var(--bf-orange);
            color: #fff;
        }

        .bf-btn-primary:hover {
            background: var(--bf-orange-hover);
            color: #fff;
            box-shadow: 0 4px 14px rgba(255, 122, 0, 0.3);
        }

        .bf-btn-primary:active {
            background: #CC6200;
            transform: scale(0.98);
        }

        .bf-btn-green {
            background: var(--bf-green);
            color: #fff;
        }

        .bf-btn-green:hover {
            background: var(--bf-green-dark);
            color: #fff;
            box-shadow: 0 4px 14px rgba(27, 94, 32, 0.3);
        }

        .bf-btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
        }

        .bf-btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.7);
        }

        /* Small CTA note */
        .bf-cta-note {
            font-size: 12px;
            color: var(--bf-text-muted);
            margin-top: 10px;
        }

        /* Footer */
        .bf-footer {
            background: var(--bf-green-darker);
            color: #fff;
            padding-top: 48px;
            padding-bottom: 24px;
            margin-top: 0;
        }

        .bf-footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .bf-footer-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--bf-lime);
        }

        .bf-footer-text {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .bf-footer-link {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            padding: 4px 0;
            transition: color var(--bf-transition);
        }

        .bf-footer-link:hover {
            color: var(--bf-lime);
        }

        .bf-footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 20px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .bf-container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .bf-header-search {
                max-width: 300px;
            }

            .bf-section-title {
                font-size: 24px;
            }

            .bf-cat-head h1 {
                font-size: 30px;
            }

            .bf-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 992px) {
            .bf-header-search {
                display: none;
            }

            .bf-search-mobile-btn {
                display: inline-flex;
            }

            .bf-nav {
                display: none;
            }

            .bf-nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }

            .bf-nav-collapsed {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                padding-top: 8px;
            }

            .bf-nav-collapsed.open {
                display: flex;
            }

            .bf-nav-collapsed .bf-nav-link {
                display: block;
                padding: 10px 12px;
                border-radius: var(--bf-radius-sm);
            }

            .bf-topic-card {
                flex-wrap: wrap;
            }

            .bf-topic-stats {
                margin-left: 0;
                width: 100%;
                justify-content: flex-start;
                padding-left: 60px;
            }

            .bf-topic-thumb {
                width: 100%;
                height: 160px;
                max-width: 100%;
                order: 3;
                margin-left: 60px;
            }

            .bf-cta-band {
                flex-direction: column;
                align-items: stretch;
                padding: 28px 24px;
            }

            .bf-cta-band-text h3 {
                font-size: 20px;
            }
        }

        @media (max-width: 768px) {
            .bf-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .bf-section {
                padding-top: 40px;
                padding-bottom: 40px;
            }

            .bf-cat-head {
                padding-top: 24px;
                padding-bottom: 20px;
                margin-bottom: 20px;
            }

            .bf-cat-head h1 {
                font-size: 26px;
            }

            .bf-section-title {
                font-size: 22px;
            }

            .bf-filter-bar {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
                padding: 12px 14px;
            }

            .bf-sort-group {
                flex-wrap: wrap;
            }

            .bf-topic-card {
                padding: 14px;
                gap: 12px;
            }

            .bf-topic-avatar {
                width: 38px;
                height: 38px;
                font-size: 15px;
            }

            .bf-topic-title {
                font-size: 15px;
            }

            .bf-topic-thumb {
                width: 100%;
                height: 140px;
                margin-left: 0;
                order: 2;
            }

            .bf-topic-content {
                order: 1;
                width: calc(100% - 50px);
            }

            .bf-topic-stats {
                padding-left: 0;
                order: 3;
                width: 100%;
            }

            .bf-h-card {
                flex-basis: 220px;
            }

            .bf-footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .bf-footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .bf-cta-band-form input {
                flex: 1 1 100%;
            }

            .bf-cta-band-form .bf-btn {
                flex: 1 1 100%;
            }
        }

        @media (max-width: 576px) {
            .bf-cat-head h1 {
                font-size: 22px;
            }

            .bf-section-title {
                font-size: 20px;
            }

            .bf-topic-card {
                flex-direction: column;
            }

            .bf-topic-content {
                width: 100%;
            }

            .bf-topic-thumb {
                margin-left: 0;
                order: 2;
            }

            .bf-topic-stats {
                padding-left: 0;
            }

            .bf-h-card {
                flex-basis: 180px;
            }

            .bf-info-strip {
                padding: 16px;
                flex-direction: column;
                gap: 12px;
            }

            .bf-cta-band {
                padding: 20px 16px;
            }

            .bf-footer-grid {
                gap: 16px;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}