/* roulang page: index */
:root {
            --bg: #0F0F13;
            --surface: #1B1B21;
            --surface-2: #24242C;
            --surface-3: #2D2D36;
            --primary: #B7F04C;
            --primary-hover: #CAFF70;
            --accent: #3B2A5D;
            --warning: #FF7A3D;
            --danger: #FF4D4F;
            --info: #6C7A8D;
            --text: #F3F4F6;
            --text-muted: #A0A5AE;
            --text-dim: #7C828D;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-mid: rgba(255, 255, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 14px 32px rgba(0, 0, 0, 0.38);
            --shadow-glow: 0 0 24px rgba(183, 240, 76, 0.18);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--primary);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-pad {
            padding: 56px 0 72px;
        }

        .section-pad-sm {
            padding: 36px 0 48px;
        }

        .section-alt {
            background-color: var(--surface);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        .section-sub {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
        }

        .section-head {
            margin-bottom: 36px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .section-head-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(183, 240, 76, 0.1);
            color: var(--primary);
            border: 1px solid rgba(183, 240, 76, 0.22);
            white-space: nowrap;
        }

        .badge-neutral {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            border-color: rgba(255, 255, 255, 0.1);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #0F0F13;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: 10px;
            transition: all 0.28s ease;
            border: 1px solid transparent;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(183, 240, 76, 0.22);
            color: #0F0F13;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 8px rgba(183, 240, 76, 0.18);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text);
            font-weight: 500;
            font-size: 15px;
            padding: 12px 22px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: all 0.28s ease;
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }

        .card {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }

        .card:hover {
            border-color: rgba(183, 240, 76, 0.35);
            box-shadow: var(--shadow-hover), var(--shadow-glow);
            transform: translateY(-3px);
        }

        .card-cover {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-md);
            margin-bottom: 18px;
            aspect-ratio: 16/9;
            background: var(--surface-2);
        }

        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .card:hover .card-cover img {
            transform: scale(1.04);
        }

        .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-text {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-footer {
            margin-top: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .metric-number {
            font-family: 'Inter', 'ui-sans-serif', 'system-ui', sans-serif;
            font-size: 38px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
        }

        .metric-label {
            font-size: 14px;
            color: var(--text-muted);
        }

        .trend-up {
            color: #4ADE80;
        }

        .trend-down {
            color: var(--danger);
        }

        .trend-flat {
            color: var(--info);
        }

        .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 6px;
            background: rgba(183, 240, 76, 0.08);
            color: var(--primary);
            border: 1px solid rgba(183, 240, 76, 0.2);
        }

        .list-item {
            padding: 14px 16px;
            border-radius: var(--radius-md);
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            transition: all 0.25s ease;
        }

        .list-item:hover {
            border-color: rgba(183, 240, 76, 0.3);
            background: var(--surface-2);
        }

        .faq-item {
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            background: var(--surface);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(183, 240, 76, 0.25);
        }

        .faq-item summary {
            padding: 18px 20px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(183, 240, 76, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease;
            color: var(--primary);
            font-size: 12px;
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }

        .faq-item summary .faq-q {
            flex: 1;
        }

        .faq-answer {
            padding: 0 20px 18px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.75;
            border-left: 3px solid var(--primary);
            margin-left: 20px;
            padding-left: 16px;
        }

        .input-field {
            width: 100%;
            background: #1E1E24;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            padding: 12px 16px;
            font-size: 15px;
            color: var(--text);
            transition: all 0.25s ease;
        }

        .input-field:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(183, 240, 76, 0.12);
        }

        .input-field::placeholder {
            color: var(--text-dim);
        }

        .form-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            margin-bottom: 6px;
            display: block;
        }

        .hero-bg {
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, #0F0F13 0%, #1B1B21 50%, #0F0F13 100%);
        }

        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/f9f9fe2679215a71.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.16;
            pointer-events: none;
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(183, 240, 76, 0.05) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .nav-search {
            background: #1E1E24;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            transition: all 0.3s ease;
        }

        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(183, 240, 76, 0.1), 0 0 18px rgba(183, 240, 76, 0.08);
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            padding: 6px 10px;
            border-radius: 8px;
            transition: all 0.22s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(183, 240, 76, 0.06);
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(183, 240, 76, 0.1);
        }

        .footer-link {
            font-size: 14px;
            color: var(--text-muted);
            transition: color 0.22s ease;
        }

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

        .divider {
            height: 1px;
            background: var(--border-subtle);
            border: none;
        }

        .icon-box {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            background: rgba(183, 240, 76, 0.08);
            color: var(--primary);
            border: 1px solid rgba(183, 240, 76, 0.16);
            flex-shrink: 0;
        }

        .icon-box-small {
            width: 36px;
            height: 36px;
            font-size: 15px;
            border-radius: 10px;
        }

        .trend-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            display: inline-block;
            margin-right: 6px;
        }

        .timeline-item {
            position: relative;
            padding-left: 28px;
            padding-bottom: 28px;
            border-left: 2px solid rgba(183, 240, 76, 0.3);
        }

        .timeline-item:last-child {
            border-left-color: transparent;
            padding-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: -7px;
            top: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--surface-3);
            border: 2px solid var(--primary);
        }

        .mobile-menu {
            display: none;
        }

        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .section-pad {
                padding: 48px 0 60px;
            }
            .section-title {
                font-size: 23px;
            }
            .metric-number {
                font-size: 32px;
            }
        }

        @media (max-width: 768px) {
            .desktop-nav-links {
                display: none;
            }
            .mobile-menu {
                display: block;
            }
            .container {
                padding: 0 16px;
            }
            .section-pad {
                padding: 36px 0 48px;
            }
            .section-title {
                font-size: 21px;
            }
            .metric-number {
                font-size: 28px;
            }
            .card {
                padding: 18px;
            }
            .section-head-row {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-metric-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .faq-item summary {
                font-size: 15px;
                padding: 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                margin-left: 16px;
                padding-left: 12px;
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .metric-number {
                font-size: 24px;
            }
            .card-title {
                font-size: 16px;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero-metric-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 19px;
            }
        }

/* roulang page: category1 */
:root {
            --bg: #0F0F13;
            --surface: #1B1B21;
            --surface-2: #24242C;
            --surface-3: #2D2D36;
            --primary: #B7F04C;
            --primary-hover: #CAFF70;
            --accent: #3B2A5D;
            --warning: #FF7A3D;
            --danger: #FF4D4F;
            --info: #6C7A8D;
            --text: #F3F4F6;
            --text-muted: #A0A5AE;
            --text-dim: #7C828D;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-mid: rgba(255, 255, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 14px 32px rgba(0, 0, 0, 0.38);
            --shadow-glow: 0 0 24px rgba(183, 240, 76, 0.18);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            margin: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-pad {
            padding: 56px 0 72px;
        }
        .section-pad-sm {
            padding: 36px 0 48px;
        }
        .section-alt {
            background-color: var(--surface);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin: 0;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
            margin: 0;
        }
        .section-head {
            margin-bottom: 36px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .section-head-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(183, 240, 76, 0.1);
            color: var(--primary);
            border: 1px solid rgba(183, 240, 76, 0.22);
            white-space: nowrap;
        }
        .badge-neutral {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            border-color: rgba(255, 255, 255, 0.1);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #0F0F13;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: 10px;
            transition: all 0.28s ease;
            border: 1px solid transparent;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(183, 240, 76, 0.22);
            color: #0F0F13;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 8px rgba(183, 240, 76, 0.18);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text);
            font-weight: 500;
            font-size: 15px;
            padding: 12px 22px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: all 0.28s ease;
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }

        .card {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            border-color: rgba(183, 240, 76, 0.35);
            box-shadow: var(--shadow-hover), var(--shadow-glow);
            transform: translateY(-3px);
        }
        .card-cover {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-md);
            margin-bottom: 18px;
            aspect-ratio: 16/9;
            background: var(--surface-2);
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }
        .card:hover .card-cover img {
            transform: scale(1.04);
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            color: var(--text);
        }
        .card-text {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
            margin: 0;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-dim);
            margin-top: 16px;
            flex-wrap: wrap;
        }

        .nav-search {
            background-color: #1E1E24;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            transition: all 0.3s ease;
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(183, 240, 76, 0.08), var(--shadow-glow);
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            color: var(--text-muted);
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(183, 240, 76, 0.08);
        }

        .footer-link {
            font-size: 14px;
            color: var(--text-muted);
            transition: color 0.25s ease;
        }
        .footer-link:hover {
            color: var(--primary);
        }

        .divider {
            border: none;
            border-top: 1px solid var(--border-subtle);
            margin: 0;
        }

        .guide-hero {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-xl);
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            margin-bottom: 32px;
        }
        .guide-hero-bg {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(183, 240, 76, 0.06), transparent 55%),
                radial-gradient(ellipse at 20% 70%, rgba(59, 42, 93, 0.18), transparent 50%);
            pointer-events: none;
        }
        .guide-hero-content {
            position: relative;
            padding: 40px 36px;
            z-index: 1;
        }

        .filter-pill {
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-muted);
            transition: all 0.25s ease;
            white-space: nowrap;
            cursor: pointer;
        }
        .filter-pill:hover {
            border-color: var(--primary);
            color: var(--text);
        }
        .filter-pill.active {
            background: rgba(183, 240, 76, 0.12);
            border-color: var(--primary);
            color: var(--primary);
        }

        .step-card {
            position: relative;
            padding: 26px 22px;
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            transition: all 0.3s ease;
        }
        .step-card:hover {
            border-color: rgba(183, 240, 76, 0.3);
            transform: translateY(-2px);
        }
        .step-number {
            font-size: 40px;
            font-weight: 900;
            color: rgba(183, 240, 76, 0.18);
            line-height: 1;
            font-family: ui-sans-serif, system-ui, sans-serif;
        }

        .faq-item {
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            background: var(--surface);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: var(--text);
            list-style: none;
            user-select: none;
            transition: color 0.25s ease;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            transition: transform 0.3s ease;
            font-size: 14px;
            color: var(--text-dim);
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item[open] summary {
            color: var(--primary);
        }
        .faq-item .faq-answer {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
            border-left: 3px solid var(--primary);
            margin-left: 22px;
            background: rgba(183, 240, 76, 0.04);
            border-radius: 0 0 var(--radius-md) 0;
            padding-top: 12px;
            padding-bottom: 16px;
        }

        .tag-link {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            font-size: 13px;
            border-radius: 6px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-muted);
            transition: all 0.25s ease;
        }
        .tag-link:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(183, 240, 76, 0.05);
        }

        .subscribe-box {
            background: linear-gradient(135deg, #1B1B21 0%, #24242C 60%, #2D2A3A 100%);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-xl);
            padding: 36px 32px;
            position: relative;
            overflow: hidden;
        }
        .subscribe-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 85% 20%, rgba(183, 240, 76, 0.08), transparent 55%);
            pointer-events: none;
        }
        .subscribe-input {
            background: #1E1E24;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            padding: 12px 16px;
            color: var(--text);
            width: 100%;
            transition: all 0.3s ease;
        }
        .subscribe-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(183, 240, 76, 0.08);
        }
        .subscribe-input::placeholder {
            color: var(--text-dim);
        }

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

        .guide-spec-tile {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all 0.3s ease;
        }
        .guide-spec-tile:hover {
            border-color: rgba(183, 240, 76, 0.3);
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .section-pad {
                padding: 40px 0 52px;
            }
            .section-pad-sm {
                padding: 28px 0 36px;
            }
            .section-title {
                font-size: 22px;
            }
            .guide-hero-content {
                padding: 28px 20px;
            }
            .section-head {
                margin-bottom: 24px;
            }
            .card {
                padding: 18px;
            }
            .subscribe-box {
                padding: 24px 18px;
            }
        }

        @media (max-width: 520px) {
            .guide-hero-content {
                padding: 22px 16px;
            }
            .section-title {
                font-size: 20px;
            }
            .filter-pill {
                font-size: 12px;
                padding: 5px 12px;
            }
            .faq-item summary {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 14px 14px;
                margin-left: 14px;
                font-size: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --bg: #0F0F13;
            --surface: #1B1B21;
            --surface-2: #24242C;
            --surface-3: #2D2D36;
            --primary: #B7F04C;
            --primary-hover: #CAFF70;
            --accent: #3B2A5D;
            --warning: #FF7A3D;
            --danger: #FF4D4F;
            --info: #6C7A8D;
            --text: #F3F4F6;
            --text-muted: #A0A5AE;
            --text-dim: #7C828D;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-mid: rgba(255, 255, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 14px 32px rgba(0, 0, 0, 0.38);
            --shadow-glow: 0 0 24px rgba(183, 240, 76, 0.18);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            margin: 0;
            background-image: radial-gradient(circle at 20% 20%, rgba(183, 240, 76, 0.03) 0%, transparent 45%), radial-gradient(circle at 80% 80%, rgba(59, 42, 93, 0.12) 0%, transparent 50%);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad {
            padding: 56px 0 72px;
        }
        .section-pad-sm {
            padding: 36px 0 48px;
        }
        .section-alt {
            background-color: var(--surface);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
        }
        .section-head {
            margin-bottom: 36px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .section-head-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(183, 240, 76, 0.1);
            color: var(--primary);
            border: 1px solid rgba(183, 240, 76, 0.22);
            white-space: nowrap;
        }
        .badge-neutral {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            border-color: rgba(255, 255, 255, 0.1);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #0F0F13;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: 10px;
            transition: all 0.28s ease;
            border: 1px solid transparent;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(183, 240, 76, 0.22);
            color: #0F0F13;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 8px rgba(183, 240, 76, 0.18);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text);
            font-weight: 500;
            font-size: 15px;
            padding: 12px 22px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: all 0.28s ease;
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }
        .card {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }
        .card:hover {
            border-color: rgba(183, 240, 76, 0.35);
            box-shadow: var(--shadow-hover), var(--shadow-glow);
            transform: translateY(-3px);
        }
        .card-cover {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-md);
            margin-bottom: 18px;
            aspect-ratio: 16/9;
            background: var(--surface-2);
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }
        .card:hover .card-cover img {
            transform: scale(1.04);
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-text {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .header {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: rgba(15, 15, 19, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-subtle);
        }
        .nav-search {
            background-color: #1E1E24;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(183, 240, 76, 0.12);
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(183, 240, 76, 0.08);
        }
        .footer-link {
            font-size: 14px;
            color: var(--text-muted);
            transition: color 0.25s ease;
            line-height: 1.7;
        }
        .footer-link:hover {
            color: var(--primary);
        }
        .divider {
            border: none;
            border-top: 1px solid var(--border-subtle);
            margin: 0;
        }
        .data-metric-card {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .data-metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .data-metric-card:hover {
            border-color: rgba(183, 240, 76, 0.35);
            box-shadow: var(--shadow-hover), var(--shadow-glow);
            transform: translateY(-3px);
        }
        .data-metric-card:hover::before {
            opacity: 1;
        }
        .metric-value {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.1;
            font-family: 'Inter', 'ui-sans-serif', 'system-ui', sans-serif;
            letter-spacing: -0.02em;
        }
        .trend-up {
            color: #4ADE80;
        }
        .trend-down {
            color: #FF4D4F;
        }
        .trend-flat {
            color: #6C7A8D;
        }
        .chart-bar {
            border-radius: 6px 6px 0 0;
            background: linear-gradient(180deg, rgba(183, 240, 76, 0.7) 0%, rgba(183, 240, 76, 0.25) 100%);
            transition: all 0.3s ease;
            min-width: 16px;
            position: relative;
        }
        .chart-bar:hover {
            background: linear-gradient(180deg, rgba(183, 240, 76, 0.95) 0%, rgba(183, 240, 76, 0.4) 100%);
            box-shadow: 0 0 12px rgba(183, 240, 76, 0.3);
        }
        .filter-tag {
            font-size: 13px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.25s ease;
            cursor: pointer;
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: rgba(183, 240, 76, 0.4);
            color: var(--text);
        }
        .filter-tag.active {
            background: rgba(183, 240, 76, 0.12);
            color: var(--primary);
            border-color: rgba(183, 240, 76, 0.35);
        }
        .update-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: background 0.3s ease;
        }
        .update-item:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .update-item:last-child {
            border-bottom: none;
        }
        .tag-link {
            font-size: 13px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.25s ease;
            cursor: pointer;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .tag-link:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(183, 240, 76, 0.06);
        }
        .stat-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }
        .stat-table th {
            text-align: left;
            font-weight: 600;
            color: var(--text-muted);
            font-size: 13px;
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-mid);
            white-space: nowrap;
        }
        .stat-table td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text);
            font-size: 14px;
        }
        .stat-table tr:hover td {
            background: rgba(255, 255, 255, 0.03);
        }
        .stat-table td:first-child {
            font-weight: 600;
            color: var(--text);
        }
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .section-pad {
                padding: 44px 0 56px;
            }
            .section-pad-sm {
                padding: 28px 0 36px;
            }
            .section-title {
                font-size: 23px;
            }
            .metric-value {
                font-size: 30px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .section-pad {
                padding: 36px 0 44px;
            }
            .section-pad-sm {
                padding: 22px 0 28px;
            }
            .section-title {
                font-size: 20px;
            }
            .section-sub {
                font-size: 15px;
            }
            .card {
                padding: 18px;
            }
            .data-metric-card {
                padding: 18px 16px;
            }
            .metric-value {
                font-size: 26px;
            }
            .stat-table {
                font-size: 12px;
            }
            .stat-table th,
            .stat-table td {
                padding: 10px 10px;
                font-size: 12px;
            }
        }
        @media (max-width: 640px) {
            .section-pad {
                padding: 28px 0 36px;
            }
            .section-pad-sm {
                padding: 18px 0 24px;
            }
            .section-title {
                font-size: 18px;
            }
            .metric-value {
                font-size: 22px;
            }
            .badge-tag {
                font-size: 11px;
                padding: 3px 8px;
            }
            .filter-tag,
            .tag-link {
                font-size: 12px;
                padding: 6px 12px;
            }
        }
        .bg-grid-pattern {
            background-image: repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.02) 0px, rgba(255, 255, 255, 0.02) 1px, transparent 1px, transparent 40px), repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.02) 0px, rgba(255, 255, 255, 0.02) 1px, transparent 1px, transparent 40px);
        }
        .focus-ring:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 6px;
        }
        .image-overlay-dark {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 15, 19, 0.1) 0%, rgba(15, 15, 19, 0.5) 100%);
            pointer-events: none;
        }
        .card-cover {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-md);
            margin-bottom: 18px;
            aspect-ratio: 16/9;
            background: var(--surface-2);
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
            position: relative;
            z-index: 1;
        }

/* roulang page: category4 */
:root {
            --bg: #0F0F13;
            --surface: #1B1B21;
            --surface-2: #24242C;
            --surface-3: #2D2D36;
            --primary: #B7F04C;
            --primary-hover: #CAFF70;
            --accent: #3B2A5D;
            --warning: #FF7A3D;
            --danger: #FF4D4F;
            --info: #6C7A8D;
            --text: #F3F4F6;
            --text-muted: #A0A5AE;
            --text-dim: #7C828D;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-mid: rgba(255, 255, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 14px 32px rgba(0, 0, 0, 0.38);
            --shadow-glow: 0 0 24px rgba(183, 240, 76, 0.18);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad {
            padding: 56px 0 72px;
        }
        .section-pad-sm {
            padding: 36px 0 48px;
        }
        .section-alt {
            background-color: var(--surface);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
        }
        .section-head {
            margin-bottom: 36px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .section-head-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(183, 240, 76, 0.1);
            color: var(--primary);
            border: 1px solid rgba(183, 240, 76, 0.22);
            white-space: nowrap;
        }
        .badge-neutral {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            border-color: rgba(255, 255, 255, 0.1);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #0F0F13;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: 10px;
            transition: all 0.28s ease;
            border: 1px solid transparent;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(183, 240, 76, 0.22);
            color: #0F0F13;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 8px rgba(183, 240, 76, 0.18);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text);
            font-weight: 500;
            font-size: 15px;
            padding: 12px 22px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: all 0.28s ease;
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }
        .card {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }
        .card:hover {
            border-color: rgba(183, 240, 76, 0.35);
            box-shadow: var(--shadow-hover), var(--shadow-glow);
            transform: translateY(-3px);
        }
        .card-cover {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-md);
            margin-bottom: 18px;
            aspect-ratio: 16/9;
            background: var(--surface-2);
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }
        .card:hover .card-cover img {
            transform: scale(1.04);
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-text {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-dim);
            flex-wrap: wrap;
        }
        .card-meta i {
            font-size: 12px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            gap: 12px;
            background: #1E1E24;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
            padding: 10px 16px;
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 18px rgba(183, 240, 76, 0.18);
        }
        .nav-search input::placeholder {
            color: var(--text-dim);
        }
        .desktop-nav-links .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all 0.25s ease;
            white-space: nowrap;
            position: relative;
        }
        .desktop-nav-links .nav-link:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
        }
        .desktop-nav-links .nav-link.active {
            color: var(--primary);
            background: rgba(183, 240, 76, 0.08);
        }
        .desktop-nav-links .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }
        .footer-link {
            font-size: 14px;
            color: var(--text-muted);
            transition: color 0.25s ease;
        }
        .footer-link:hover {
            color: var(--primary);
        }
        .divider {
            border: none;
            border-top: 1px solid var(--border-subtle);
            margin: 0;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 999px;
            border: 1px solid var(--border-mid);
            color: var(--text-muted);
            background: transparent;
            transition: all 0.25s ease;
            cursor: pointer;
            white-space: nowrap;
        }
        .filter-chip:hover {
            border-color: rgba(183, 240, 76, 0.4);
            color: var(--text);
        }
        .filter-chip.active {
            background: rgba(183, 240, 76, 0.12);
            color: var(--primary);
            border-color: rgba(183, 240, 76, 0.4);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(183, 240, 76, 0.12);
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .timeline-item {
            position: relative;
            padding-left: 28px;
            padding-bottom: 28px;
            border-left: 2px solid rgba(255, 255, 255, 0.08);
            margin-left: 14px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
            border-left-color: transparent;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -7px;
            top: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 12px rgba(183, 240, 76, 0.45);
        }
        .tag-link {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            border: 1px solid var(--border-subtle);
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .tag-link:hover {
            background: rgba(183, 240, 76, 0.1);
            color: var(--primary);
            border-color: rgba(183, 240, 76, 0.3);
        }
        .compat-icon {
            width: 48px;
            height: 48px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(183, 240, 76, 0.08);
            color: var(--primary);
            font-size: 20px;
            flex-shrink: 0;
        }
        .bg-hero-pattern {
            background-image: radial-gradient(circle at 25% 30%, rgba(183, 240, 76, 0.06) 0%, transparent 45%),
                              radial-gradient(circle at 75% 60%, rgba(59, 42, 93, 0.5) 0%, transparent 50%),
                              repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.015) 0, rgba(255, 255, 255, 0.015) 1px, transparent 1px, transparent 32px),
                              repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.015) 0, rgba(255, 255, 255, 0.015) 1px, transparent 1px, transparent 32px);
        }
        .mobile-menu {
            display: none;
        }
        @media (max-width: 767px) {
            .desktop-nav-links {
                display: none !important;
            }
            .mobile-menu {
                display: block;
            }
            .container {
                padding: 0 16px;
            }
            .section-pad {
                padding: 40px 0 52px;
            }
            .section-pad-sm {
                padding: 28px 0 36px;
            }
            .section-title {
                font-size: 22px;
            }
            .card {
                padding: 18px;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .container {
                padding: 0 20px;
            }
            .desktop-nav-links .nav-link {
                padding: 8px 10px;
                font-size: 13px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding: 0 24px;
            }
        }

/* roulang page: category3 */
:root {
            --bg: #0F0F13;
            --surface: #1B1B21;
            --surface-2: #24242C;
            --surface-3: #2D2D36;
            --primary: #B7F04C;
            --primary-hover: #CAFF70;
            --accent: #3B2A5D;
            --warning: #FF7A3D;
            --danger: #FF4D4F;
            --info: #6C7A8D;
            --text: #F3F4F6;
            --text-muted: #A0A5AE;
            --text-dim: #7C828D;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-mid: rgba(255, 255, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 14px 32px rgba(0, 0, 0, 0.38);
            --shadow-glow: 0 0 24px rgba(183, 240, 76, 0.18);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad {
            padding: 56px 0 72px;
        }
        .section-pad-sm {
            padding: 36px 0 48px;
        }
        .section-alt {
            background-color: var(--surface);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 720px;
        }
        .section-head {
            margin-bottom: 36px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .section-head-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(183, 240, 76, 0.1);
            color: var(--primary);
            border: 1px solid rgba(183, 240, 76, 0.22);
            white-space: nowrap;
        }
        .badge-neutral {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            border-color: rgba(255, 255, 255, 0.1);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #0F0F13;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: 10px;
            transition: all 0.28s ease;
            border: 1px solid transparent;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(183, 240, 76, 0.22);
            color: #0F0F13;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 8px rgba(183, 240, 76, 0.18);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--text);
            font-weight: 500;
            font-size: 15px;
            padding: 12px 22px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: all 0.28s ease;
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }
        .card {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }
        .card:hover {
            border-color: rgba(183, 240, 76, 0.35);
            box-shadow: var(--shadow-hover), var(--shadow-glow);
            transform: translateY(-3px);
        }
        .card-cover {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-md);
            margin-bottom: 18px;
            aspect-ratio: 16/9;
            background: var(--surface-2);
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }
        .card:hover .card-cover img {
            transform: scale(1.04);
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-text {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .nav-search {
            background: #1E1E24;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            transition: all 0.3s ease;
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 18px rgba(183, 240, 76, 0.15);
        }
        .nav-search input::placeholder {
            color: var(--text-dim);
            font-size: 14px;
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            color: var(--text-muted);
            transition: all 0.22s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(183, 240, 76, 0.1);
        }
        .mobile-menu {
            display: none;
        }
        .footer-link {
            font-size: 14px;
            color: var(--text-muted);
            transition: color 0.22s ease;
        }
        .footer-link:hover {
            color: var(--primary);
        }
        .divider {
            border: none;
            height: 1px;
            background: var(--border-subtle);
            margin: 0;
        }
        .score-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 28px;
            color: var(--primary);
            background: rgba(183, 240, 76, 0.08);
            border-radius: 12px;
            padding: 4px 12px;
            min-width: 64px;
            font-family: 'Inter', 'ui-sans-serif', 'system-ui', sans-serif;
        }
        .score-bar {
            height: 4px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            overflow: hidden;
            flex: 1;
        }
        .score-bar-fill {
            height: 100%;
            border-radius: 999px;
            transition: width 0.6s ease;
        }
        .score-dim-label {
            font-size: 12px;
            color: var(--text-dim);
            min-width: 48px;
        }
        .score-dim-value {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-muted);
            min-width: 28px;
            text-align: right;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }
        .comparison-table th {
            background: var(--surface-2);
            color: var(--text-muted);
            font-weight: 600;
            padding: 14px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border-mid);
            white-space: nowrap;
        }
        .comparison-table td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text);
        }
        .comparison-table tr:hover td {
            background: rgba(255, 255, 255, 0.02);
        }
        .table-score-cell {
            font-weight: 700;
            font-size: 16px;
            font-family: 'Inter', 'ui-sans-serif', 'system-ui', sans-serif;
        }
        .score-excellent {
            color: #4ADE80;
        }
        .score-good {
            color: var(--primary);
        }
        .score-fair {
            color: var(--warning);
        }
        .score-poor {
            color: var(--danger);
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 999px;
            background: transparent;
            color: var(--text-muted);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all 0.25s ease;
            cursor: pointer;
            white-space: nowrap;
        }
        .filter-chip:hover {
            border-color: rgba(183, 240, 76, 0.4);
            color: var(--text);
        }
        .filter-chip.active {
            background: rgba(183, 240, 76, 0.12);
            border-color: var(--primary);
            color: var(--primary);
        }
        .editor-note-card {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-left: 3px solid var(--primary);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            position: relative;
        }
        .editor-note-card::before {
            content: '"';
            font-size: 48px;
            font-weight: 800;
            color: rgba(183, 240, 76, 0.15);
            position: absolute;
            top: 8px;
            left: 16px;
            font-family: serif;
            line-height: 1;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(183, 240, 76, 0.25);
        }
        .faq-item summary {
            font-weight: 600;
            font-size: 16px;
            padding: 18px 20px;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            color: var(--primary);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item[open] {
            border-color: rgba(183, 240, 76, 0.3);
            box-shadow: var(--shadow-glow);
        }
        .faq-item[open] summary {
            background: rgba(183, 240, 76, 0.05);
        }
        .faq-answer {
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-dim);
            flex-wrap: wrap;
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--text-dim);
            transition: color 0.22s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--text-dim);
        }
        .breadcrumb .current {
            color: var(--text-muted);
        }
        .review-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 20px;
        }
        .review-card-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .review-card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .topic-card {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .topic-card:hover {
            border-color: rgba(183, 240, 76, 0.3);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .topic-card .topic-cover {
            aspect-ratio: 21/9;
            overflow: hidden;
        }
        .topic-card .topic-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }
        .topic-card:hover .topic-cover img {
            transform: scale(1.04);
        }
        .tag-link {
            font-size: 13px;
            padding: 5px 14px;
            border-radius: 6px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
            border: 1px solid var(--border-subtle);
            transition: all 0.22s ease;
        }
        .tag-link:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(183, 240, 76, 0.08);
        }
        .star-rating {
            display: inline-flex;
            gap: 2px;
            color: var(--primary);
            font-size: 13px;
        }
        @media (max-width: 1024px) {
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .section-pad {
                padding: 44px 0 56px;
            }
        }
        @media (max-width: 768px) {
            .desktop-nav-links {
                display: none !important;
            }
            .mobile-menu {
                display: block !important;
            }
            .container {
                padding: 0 16px;
            }
            .section-title {
                font-size: 22px;
            }
            .section-pad {
                padding: 36px 0 48px;
            }
            .review-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .comparison-table {
                font-size: 12px;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 10px 8px;
            }
            .faq-item summary {
                font-size: 15px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 14px;
            }
            .editor-note-card {
                padding: 16px 18px;
            }
            .editor-note-card::before {
                font-size: 36px;
                top: 4px;
                left: 10px;
            }
            .filter-chip {
                font-size: 12px;
                padding: 5px 12px;
            }
        }
        @media (max-width: 520px) {
            .review-grid {
                grid-template-columns: 1fr;
            }
            .score-badge {
                font-size: 22px;
                min-width: 52px;
                padding: 2px 8px;
            }
            .card {
                padding: 16px;
            }
            .btn-primary,
            .btn-secondary {
                font-size: 14px;
                padding: 10px 18px;
            }
            .section-head {
                margin-bottom: 24px;
            }
        }