/* roulang page: index */
:root {
            --c-primary: #0E5A5A;
            --c-primary-dark: #083F3F;
            --c-secondary: #C67C3B;
            --c-accent: #B23A2E;
            --c-bg: #FAF7F2;
            --c-surface: #FFFFFF;
            --c-surface-alt: #F3EFE8;
            --c-text: #1F1B16;
            --c-text-secondary: #4A423A;
            --c-text-muted: #7A7066;
            --c-border: #E5DED4;
            --c-border-strong: #CFC4B6;
            --c-focus: rgba(14, 90, 90, 0.28);
            --c-glass: rgba(250, 247, 242, 0.68);
            --c-glass-border: rgba(14, 90, 90, 0.14);
            --c-hero-bg: #141210;
            --c-hero-text: #F5F1EA;
            --c-gold: #D4A24E;
            --c-gold-light: #E8C88A;
            --c-gold-dark: #B8862E;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(31, 27, 22, 0.05);
            --shadow-md: 0 6px 18px rgba(31, 27, 22, 0.10);
            --shadow-lg: 0 12px 32px rgba(31, 27, 22, 0.14);
            --font-sans: Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --container-max: 1200px;
            --section-pad: 5rem;
            --section-pad-sm: 3rem;
            --transition: 0.22s ease;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.9;
            color: var(--c-text);
            background-color: var(--c-bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--c-primary);
            text-decoration: none;
            transition: color var(--transition);
        }

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .btn:focus-visible,
        .nav-link:focus-visible {
            outline: 3px solid var(--c-focus);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--c-text);
            margin-top: 0;
        }

        h1 {
            font-size: 2.5rem;
            letter-spacing: -0.02em;
        }

        h2 {
            font-size: 2rem;
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
        }

        h3 {
            font-size: 1.35rem;
            margin-bottom: 0.75rem;
        }

        h4 {
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }

        p {
            margin-bottom: 1rem;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        section {
            padding: var(--section-pad) 0;
        }

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

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--c-primary);
            background-color: rgba(14, 90, 90, 0.08);
            border: 1px solid rgba(14, 90, 90, 0.18);
            border-radius: 999px;
            padding: 0.3rem 0.9rem;
            margin-bottom: 1rem;
        }

        .section-title {
            font-size: 1.9rem;
            margin-bottom: 0.75rem;
            color: var(--c-text);
        }

        .section-desc {
            font-size: 1rem;
            color: var(--c-text-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 2rem;
        }

        /* ===== Header/Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--c-glass);
            backdrop-filter: blur(14px) saturate(1.2);
            -webkit-backdrop-filter: blur(14px) saturate(1.2);
            border-bottom: 1px solid var(--c-glass-border);
            box-shadow: 0 1px 8px rgba(31, 27, 22, 0.06);
            transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
            height: 68px;
        }

        .site-header.scrolled {
            background: var(--c-surface);
            box-shadow: 0 2px 12px rgba(31, 27, 22, 0.10);
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
        }

        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--c-primary-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .navbar-brand:hover {
            color: var(--c-primary);
        }

        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--c-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.25rem;
        }

        .main-nav .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--c-text-secondary);
            padding: 0.5rem 0.25rem;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
            border: none;
            background: transparent;
        }

        .main-nav .nav-link:hover {
            color: var(--c-primary);
        }

        .main-nav .nav-link.active {
            color: var(--c-primary);
            font-weight: 700;
        }

        .main-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0.25rem;
            right: 0.25rem;
            height: 2px;
            background: var(--c-primary);
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: 8px;
            padding: 0.4rem 0.8rem;
            font-size: 0.85rem;
            color: var(--c-text-muted);
            min-width: 180px;
            transition: border-color var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--c-primary);
        }

        .header-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 0.85rem;
            color: var(--c-text);
            width: 100%;
            font-family: var(--font-sans);
        }

        .header-search input::placeholder {
            color: var(--c-text-muted);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 10px;
            padding: 0.7rem 1.6rem;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background 0.22s ease, border-color 0.22s ease, color 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
            font-family: var(--font-sans);
            text-align: center;
            line-height: 1.5;
        }

        .btn:active {
            transform: translateY(1px);
        }

        .btn-primary {
            background: var(--c-primary);
            color: #FFFFFF;
            border-color: var(--c-primary);
        }

        .btn-primary:hover {
            background: var(--c-primary-dark);
            border-color: var(--c-primary-dark);
            color: #FFFFFF;
        }

        .btn-outline-primary {
            background: transparent;
            border-color: var(--c-primary);
            color: var(--c-primary);
        }

        .btn-outline-primary:hover {
            background: rgba(14, 90, 90, 0.08);
            border-color: var(--c-primary);
            color: var(--c-primary);
        }

        .btn-light-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
        }

        .btn-light-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
        }

        .btn-white {
            background: #fff;
            color: var(--c-primary-dark);
            border-color: #fff;
        }

        .btn-white:hover {
            background: #f0ede8;
            border-color: #f0ede8;
            color: var(--c-primary-dark);
        }

        .btn-sm {
            padding: 0.5rem 1.1rem;
            font-size: 0.85rem;
        }

        .btn-lg {
            padding: 0.9rem 2.2rem;
            font-size: 1.05rem;
            border-radius: 12px;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background-color: var(--c-hero-bg);
            overflow: hidden;
            margin-top: 0;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.4;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(20, 18, 16, 0.75) 0%, rgba(20, 18, 16, 0.92) 65%, rgba(20, 18, 16, 0.97) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            color: var(--c-hero-text);
            width: 100%;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(198, 124, 59, 0.15);
            border: 1px solid rgba(212, 162, 78, 0.45);
            color: var(--c-gold-light);
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 999px;
            padding: 0.4rem 1rem;
            letter-spacing: 0.04em;
            margin-bottom: 1.5rem;
        }

        .hero-badge .badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--c-gold);
            display: inline-block;
        }

        .hero-title {
            font-size: 3.1rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 1.25rem;
        }

        .hero-title .highlight-gold {
            color: var(--c-gold-light);
        }

        .hero-desc {
            font-size: 1.1rem;
            line-height: 2.0;
            color: rgba(245, 241, 234, 0.85);
            max-width: 620px;
            margin-bottom: 2rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2.5rem;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            border-top: 1px solid rgba(212, 162, 78, 0.25);
            padding-top: 1.75rem;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
        }

        .hero-stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--c-gold-light);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.8rem;
            color: rgba(245, 241, 234, 0.7);
            font-weight: 400;
        }

        .hero-level-badge-wrap {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.75rem;
        }

        .level-badge {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            background: rgba(20, 18, 16, 0.7);
            border: 1.5px solid rgba(212, 162, 78, 0.6);
            border-radius: 12px;
            padding: 0.5rem 1.1rem;
            color: var(--c-gold-light);
            font-weight: 700;
            font-size: 0.9rem;
        }

        .level-badge .level-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: radial-gradient(circle at 40% 35%, #f0d68a, #b8862e 65%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1a1a1a;
            font-size: 0.75rem;
            font-weight: 900;
            flex-shrink: 0;
        }

        /* ===== Section Common ===== */
        .section-pad {
            padding: var(--section-pad) 0;
        }

        .section-pad-sm {
            padding: var(--section-pad-sm) 0;
        }

        .text-muted-2 {
            color: var(--c-text-muted);
        }

        /* ===== KPI ===== */
        .kpi-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            margin-top: -3rem;
            position: relative;
            z-index: 5;
        }

        .kpi-card {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.25rem;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            text-align: center;
        }

        .kpi-card:hover {
            border-color: var(--c-border-strong);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .kpi-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--c-secondary);
            line-height: 1.2;
            margin-bottom: 0.4rem;
        }

        .kpi-label {
            font-size: 0.85rem;
            color: var(--c-text-secondary);
            font-weight: 500;
        }

        /* ===== Service Matrix ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .service-card {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 1.75rem 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .service-card:hover {
            border-color: var(--c-border-strong);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(14, 90, 90, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--c-primary);
            font-size: 1.3rem;
            margin-bottom: 0.25rem;
        }

        .service-card h3 {
            font-size: 1.1rem;
            margin-bottom: 0.25rem;
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--c-text-secondary);
            margin-bottom: 0;
            line-height: 1.8;
        }

        /* ===== Compare ===== */
        .compare-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: start;
        }

        .compare-card {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 2rem;
            box-shadow: var(--shadow-sm);
        }

        .compare-card.compare-bad {
            border-left: 4px solid var(--c-accent);
        }

        .compare-card.compare-good {
            border-left: 4px solid var(--c-primary);
        }

        .compare-card h3 {
            font-size: 1.15rem;
            margin-bottom: 1rem;
        }

        .compare-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-card ul li {
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--c-border);
            font-size: 0.92rem;
            color: var(--c-text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            line-height: 1.7;
        }

        .compare-card ul li:last-child {
            border-bottom: none;
        }

        .compare-card ul li i {
            margin-top: 0.3rem;
            flex-shrink: 0;
            font-size: 0.9rem;
        }

        .compare-card.compare-bad ul li i {
            color: var(--c-accent);
        }

        .compare-card.compare-good ul li i {
            color: var(--c-primary);
        }

        /* ===== Milestone ===== */
        .timeline {
            position: relative;
            padding-left: 2rem;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 0.6rem;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--c-border-strong);
        }

        .timeline-item {
            position: relative;
            padding-bottom: 2.5rem;
            padding-left: 1.5rem;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -2rem;
            top: 0.4rem;
            width: 1.2rem;
            height: 1.2rem;
            border-radius: 50%;
            background: var(--c-primary);
            border: 3px solid var(--c-surface);
            box-shadow: 0 0 0 3px var(--c-primary);
        }

        .timeline-item h4 {
            font-size: 1rem;
            margin-bottom: 0.3rem;
            color: var(--c-text);
        }

        .timeline-item p {
            font-size: 0.9rem;
            color: var(--c-text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }

        .timeline-item .timeline-date {
            font-size: 0.8rem;
            color: var(--c-text-muted);
            font-weight: 500;
        }

        /* ===== Info Cards ===== */
        .info-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .info-card {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
            display: block;
            color: var(--c-text);
            text-decoration: none;
        }

        .info-card:hover {
            border-color: var(--c-border-strong);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            color: var(--c-text);
        }

        .info-card-img {
            width: 100%;
            height: 220px;
            overflow: hidden;
            background: var(--c-surface-alt);
        }

        .info-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

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

        .info-card-body {
            padding: 1.25rem 1.5rem 1.5rem;
        }

        .info-card-body h3 {
            font-size: 1.05rem;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .info-card-body p {
            font-size: 0.88rem;
            color: var(--c-text-secondary);
            line-height: 1.7;
            margin-bottom: 0.75rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .info-meta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.75rem;
            color: var(--c-text-muted);
        }

        .badge-soft {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(14, 90, 90, 0.10);
            color: var(--c-primary-dark);
            border: 1px solid rgba(14, 90, 90, 0.16);
            border-radius: 999px;
            padding: 0.2rem 0.65rem;
        }

        .badge-gold {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(198, 124, 59, 0.15);
            color: #7A4A1D;
            border: 1px solid rgba(198, 124, 59, 0.3);
            border-radius: 999px;
            padding: 0.2rem 0.65rem;
        }

        .badge-red {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(178, 58, 46, 0.10);
            color: var(--c-accent);
            border: 1px solid rgba(178, 58, 46, 0.2);
            border-radius: 999px;
            padding: 0.2rem 0.65rem;
        }

        .empty-state {
            text-align: center;
            padding: 3rem 1.5rem;
            background: var(--c-surface);
            border: 1px dashed var(--c-border);
            border-radius: var(--radius-md);
            color: var(--c-text-muted);
        }

        .empty-state img {
            max-width: 200px;
            margin: 0 auto 1rem;
            opacity: 0.7;
            border-radius: var(--radius-md);
        }

        /* ===== Guarantee ===== */
        .guarantee-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .guarantee-item {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .guarantee-item:hover {
            border-color: var(--c-border-strong);
            box-shadow: var(--shadow-md);
        }

        .guarantee-icon {
            font-size: 1.8rem;
            color: var(--c-primary);
            margin-bottom: 0.75rem;
        }

        .guarantee-item h4 {
            font-size: 1rem;
            margin-bottom: 0.3rem;
        }

        .guarantee-item p {
            font-size: 0.85rem;
            color: var(--c-text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== Topic Entrance ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .topic-card {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
            display: block;
            color: var(--c-text);
            text-decoration: none;
        }

        .topic-card:hover {
            border-color: var(--c-border-strong);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            color: var(--c-text);
        }

        .topic-card-img {
            width: 100%;
            height: 180px;
            overflow: hidden;
            background: var(--c-surface-alt);
        }

        .topic-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

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

        .topic-card-body {
            padding: 1.25rem 1.5rem 1.5rem;
        }

        .topic-card-body h3 {
            font-size: 1rem;
            margin-bottom: 0.5rem;
        }

        .topic-card-body p {
            font-size: 0.85rem;
            color: var(--c-text-secondary);
            line-height: 1.7;
            margin-bottom: 0.75rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .topic-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--c-primary);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        /* ===== Scenario ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .scenario-card {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 1.75rem 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .scenario-card:hover {
            border-color: var(--c-border-strong);
            box-shadow: var(--shadow-md);
        }

        .scenario-card h4 {
            font-size: 1.05rem;
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .scenario-card h4 i {
            color: var(--c-secondary);
            font-size: 1rem;
        }

        .scenario-card p {
            font-size: 0.88rem;
            color: var(--c-text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Testimonials ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .testimonial-card {
            background: var(--c-surface-alt);
            border: 1px solid var(--c-border);
            border-left: 3px solid var(--c-secondary);
            border-radius: var(--radius-md);
            padding: 1.75rem 1.5rem;
            box-shadow: var(--shadow-sm);
        }

        .testimonial-card blockquote {
            font-size: 0.92rem;
            line-height: 1.9;
            color: var(--c-text-secondary);
            margin: 0 0 1rem;
            font-style: normal;
        }

        .testimonial-card blockquote::before {
            content: '"';
            font-size: 2rem;
            color: var(--c-secondary);
            line-height: 1;
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 700;
        }

        .testimonial-author {
            font-size: 0.8rem;
            color: var(--c-text-muted);
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--c-surface);
            border: 1px solid var(--c-border) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: 1rem;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .accordion-button {
            background: var(--c-surface) !important;
            color: var(--c-text) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 1.1rem 1.5rem;
            border: none;
            box-shadow: none !important;
            font-family: var(--font-sans);
            line-height: 1.5;
        }

        .accordion-button:focus {
            outline: 3px solid var(--c-focus);
            outline-offset: -2px;
            border-radius: var(--radius-md);
        }

        .accordion-button:not(.collapsed) {
            background: var(--c-surface-alt) !important;
            color: var(--c-primary-dark) !important;
        }

        .accordion-button::after {
            filter: brightness(0.4);
        }

        .accordion-body {
            font-size: 0.9rem;
            color: var(--c-text-secondary);
            line-height: 1.9;
            padding: 0.75rem 1.5rem 1.25rem;
            background: var(--c-surface);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--c-primary-dark);
            color: #fff;
            text-align: center;
            padding: 4.5rem 0;
        }

        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 2rem;
            line-height: 1.9;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--c-primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 4rem 0 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 0.75rem;
            font-weight: 700;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 0;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 0.5rem;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.75rem;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Card hover/focus states ===== */
        .info-card:focus-visible,
        .topic-card:focus-visible,
        .service-card:focus-visible,
        .scenario-card:focus-visible,
        .testimonial-card:focus-visible {
            outline: 3px solid var(--c-focus);
            outline-offset: 2px;
            border-radius: var(--radius-md);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .kpi-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .guarantee-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-title {
                font-size: 2.6rem;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 56px;
            }
            .header-inner {
                padding: 0 1rem;
            }
            .navbar-brand {
                font-size: 0.95rem;
            }
            .navbar-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.75rem;
                border-radius: 8px;
            }
            .header-search {
                display: none;
            }
            .main-nav {
                gap: 0.75rem;
            }
            .main-nav .nav-link {
                font-size: 0.82rem;
            }
            .hero-section {
                padding: 100px 0 60px;
                min-height: auto;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 0.95rem;
                line-height: 1.8;
            }
            .hero-stats {
                gap: 1.5rem;
                flex-wrap: wrap;
            }
            .section-pad {
                padding: var(--section-pad-sm) 0;
            }
            .kpi-strip {
                grid-template-columns: repeat(2, 1fr);
                margin-top: -2rem;
            }
            .info-card-grid {
                grid-template-columns: 1fr;
            }
            .compare-wrapper {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .guarantee-strip {
                grid-template-columns: 1fr 1fr;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .section-title {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 0 0.75rem;
            }
            .navbar-brand {
                font-size: 0.85rem;
                gap: 0.35rem;
            }
            .main-nav {
                gap: 0.5rem;
            }
            .main-nav .nav-link {
                font-size: 0.75rem;
                padding: 0.4rem 0.15rem;
            }
            .hero-title {
                font-size: 1.65rem;
            }
            .kpi-strip {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .guarantee-strip {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .hero-stat-num {
                font-size: 1.4rem;
            }
            .kt-actions {
                flex-direction: column;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn {
                width: 100%;
                max-width: 300px;
            }
        }

        /* Mobile Nav - Bootstrap toggle custom */
        .navbar-toggler {
            border: none;
            background: transparent;
            font-size: 1.4rem;
            color: var(--c-text);
            padding: 0.25rem 0.5rem;
            cursor: pointer;
        }

        .navbar-toggler:focus {
            outline: 3px solid var(--c-focus);
            border-radius: 6px;
        }

        .navbar-collapse {
            background: var(--c-surface);
            border-radius: 0 0 12px 12px;
            box-shadow: var(--shadow-md);
            padding: 1rem;
            margin-top: 0.5rem;
        }

        .navbar-collapse .nav-link {
            display: block;
            padding: 0.75rem 1rem;
            font-size: 0.95rem;
            color: var(--c-text-secondary);
            border-radius: 8px;
        }

        .navbar-collapse .nav-link:hover {
            background: rgba(14, 90, 90, 0.06);
            color: var(--c-primary);
        }

        .navbar-collapse .nav-link.active {
            background: rgba(14, 90, 90, 0.1);
            color: var(--c-primary);
            font-weight: 700;
        }

        @media (min-width: 769px) {
            .navbar-collapse {
                background: transparent;
                box-shadow: none;
                padding: 0;
                margin-top: 0;
                border-radius: 0;
                display: flex !important;
            }
            .navbar-collapse .nav-link {
                display: inline-block;
                padding: 0.5rem 0.25rem;
                font-size: 0.95rem;
                border-radius: 0;
            }
            .navbar-collapse .nav-link:hover {
                background: transparent;
            }
            .navbar-collapse .nav-link.active {
                background: transparent;
            }
            .navbar-toggler {
                display: none;
            }
        }

/* roulang page: category1 */
:root {
            --c-primary: #0E5A5A;
            --c-primary-dark: #083F3F;
            --c-secondary: #C67C3B;
            --c-accent: #B23A2E;
            --c-bg: #FAF7F2;
            --c-surface: #FFFFFF;
            --c-surface-alt: #F3EFE8;
            --c-text: #1F1B16;
            --c-text-secondary: #4A423A;
            --c-text-muted: #7A7066;
            --c-border: #E5DED4;
            --c-border-strong: #CFC4B6;
            --c-focus: rgba(14, 90, 90, 0.28);
            --c-glass: rgba(250, 247, 242, 0.68);
            --c-glass-border: rgba(14, 90, 90, 0.14);
            --c-hero-bg: #141210;
            --c-hero-text: #F5F1EA;
            --c-gold: #D4A24E;
            --c-gold-light: #E8C88A;
            --c-gold-dark: #B8862E;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(31, 27, 22, 0.05);
            --shadow-md: 0 6px 18px rgba(31, 27, 22, 0.10);
            --shadow-lg: 0 12px 32px rgba(31, 27, 22, 0.14);
            --font-sans: Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --container-max: 1200px;
            --section-pad: 5rem;
            --section-pad-sm: 3rem;
            --transition: 0.22s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.9;
            color: var(--c-text);
            background-color: var(--c-bg);
            margin: 0;
            padding-top: 68px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--c-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--c-primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .btn:focus-visible,
        .nav-link:focus-visible {
            outline: 3px solid var(--c-focus);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        section {
            padding: var(--section-pad) 0;
        }
        .section-alt {
            background-color: var(--c-surface-alt);
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--c-primary);
            background-color: rgba(14, 90, 90, 0.08);
            border: 1px solid rgba(14, 90, 90, 0.18);
            border-radius: 999px;
            padding: 0.3rem 0.9rem;
            margin-bottom: 1rem;
        }
        .section-title {
            font-size: 1.9rem;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 0.75rem;
            color: var(--c-text);
            letter-spacing: -0.01em;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--c-text-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 2rem;
        }

        /* ===== Header/Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--c-glass);
            backdrop-filter: blur(14px) saturate(1.2);
            -webkit-backdrop-filter: blur(14px) saturate(1.2);
            border-bottom: 1px solid var(--c-glass-border);
            box-shadow: 0 1px 8px rgba(31, 27, 22, 0.06);
            transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
            height: 68px;
        }
        .site-header.scrolled {
            background: var(--c-surface);
            box-shadow: 0 2px 12px rgba(31, 27, 22, 0.10);
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--c-primary-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .navbar-brand:hover {
            color: var(--c-primary);
        }
        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--c-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.25rem;
        }
        .main-nav .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--c-text-secondary);
            padding: 0.5rem 0.25rem;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
            border: none;
            background: transparent;
            cursor: pointer;
        }
        .main-nav .nav-link:hover {
            color: var(--c-primary);
        }
        .main-nav .nav-link.active {
            color: var(--c-primary);
            font-weight: 600;
        }
        .main-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--c-primary);
            border-radius: 2px;
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .header-search {
            position: relative;
        }
        .header-search input {
            width: 220px;
            height: 40px;
            border: 1px solid var(--c-border);
            border-radius: 10px;
            background: var(--c-surface);
            padding: 0.5rem 2.25rem 0.5rem 0.9rem;
            font-size: 0.85rem;
            color: var(--c-text);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .header-search input::placeholder {
            color: var(--c-text-muted);
        }
        .header-search input:focus {
            outline: none;
            border-color: var(--c-primary);
            box-shadow: 0 0 0 3px var(--c-focus);
        }
        .header-search .search-icon {
            position: absolute;
            right: 0.75rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--c-text-muted);
            font-size: 0.85rem;
            pointer-events: none;
        }
        .btn-callout {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            font-weight: 600;
            font-size: 0.85rem;
            border-radius: 10px;
            padding: 0.55rem 1.25rem;
            background: var(--c-primary);
            color: #fff;
            border: 1px solid var(--c-primary);
            transition: background var(--transition), border-color var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .btn-callout:hover {
            background: var(--c-primary-dark);
            border-color: var(--c-primary-dark);
            color: #fff;
        }
        .navbar-toggler {
            display: none;
            background: transparent;
            border: 1px solid var(--c-border);
            border-radius: 8px;
            padding: 0.5rem 0.7rem;
            font-size: 1.1rem;
            color: var(--c-text-secondary);
            cursor: pointer;
        }
        .navbar-toggler:focus {
            outline: 3px solid var(--c-focus);
            outline-offset: 2px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding: 1.25rem 0 0;
            margin-bottom: 0;
        }
        .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            list-style: none;
            margin: 0;
            padding: 0;
            font-size: 0.85rem;
            color: var(--c-text-muted);
        }
        .breadcrumb-list li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .breadcrumb-list li:not(:last-child)::after {
            content: "/";
            color: var(--c-border-strong);
            margin-left: 0.25rem;
        }
        .breadcrumb-list a {
            color: var(--c-text-secondary);
        }
        .breadcrumb-list a:hover {
            color: var(--c-primary);
        }

        /* ===== Category Hero ===== */
        .cat-hero {
            padding: 2.5rem 0 2rem;
            background: var(--c-bg);
            border-bottom: 1px solid var(--c-border);
        }
        .cat-hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--c-text);
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
        .cat-hero .lead {
            font-size: 1.05rem;
            color: var(--c-text-secondary);
            max-width: 800px;
            line-height: 1.9;
            margin-bottom: 1.5rem;
        }
        .cat-meta-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-top: 0.5rem;
        }
        .cat-meta-badges .badge-cat {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.35rem 0.85rem;
            border-radius: 999px;
            background: rgba(14, 90, 90, 0.08);
            color: var(--c-primary-dark);
            border: 1px solid rgba(14, 90, 90, 0.18);
        }
        .cat-meta-badges .badge-cat.gold {
            background: rgba(198, 124, 59, 0.15);
            color: #7A4A1D;
            border-color: rgba(198, 124, 59, 0.3);
        }

        /* ===== Filter Bar ===== */
        .filter-bar {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 0.75rem 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            box-shadow: var(--shadow-sm);
        }
        .filter-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .filter-tabs .filter-tab {
            font-size: 0.85rem;
            font-weight: 500;
            padding: 0.4rem 1rem;
            border-radius: 999px;
            border: 1px solid var(--c-border);
            background: var(--c-surface);
            color: var(--c-text-secondary);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-tabs .filter-tab:hover {
            border-color: var(--c-primary);
            color: var(--c-primary);
        }
        .filter-tabs .filter-tab.active {
            background: var(--c-primary);
            border-color: var(--c-primary);
            color: #fff;
        }
        .filter-result-count {
            font-size: 0.85rem;
            color: var(--c-text-muted);
            white-space: nowrap;
        }

        /* ===== Catalog Grid ===== */
        .catalog-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }
        .catalog-card {
            display: flex;
            flex-direction: column;
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .catalog-card:hover {
            transform: translateY(-3px);
            border-color: var(--c-border-strong);
            box-shadow: var(--shadow-md);
        }
        .catalog-card .card-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--c-surface-alt);
        }
        .catalog-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .catalog-card .card-cover .cover-tag {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 0.2rem 0.65rem;
            border-radius: 999px;
            background: rgba(14, 90, 90, 0.85);
            color: #fff;
            letter-spacing: 0.02em;
        }
        .catalog-card .card-cover .cover-score {
            position: absolute;
            bottom: 0.75rem;
            right: 0.75rem;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.8rem;
            font-weight: 700;
            color: #fff;
            background: rgba(20, 18, 16, 0.75);
            padding: 0.25rem 0.7rem;
            border-radius: 999px;
        }
        .catalog-card .card-cover .cover-score i {
            color: var(--c-gold);
            font-size: 0.7rem;
        }
        .catalog-card .card-body {
            padding: 1.15rem 1.25rem 1.25rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .catalog-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--c-text);
            margin-bottom: 0.5rem;
            line-height: 1.45;
        }
        .catalog-card .card-desc {
            font-size: 0.88rem;
            color: var(--c-text-secondary);
            line-height: 1.7;
            margin-bottom: 0.85rem;
            flex: 1;
        }
        .catalog-card .card-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.6rem;
            font-size: 0.78rem;
            color: var(--c-text-muted);
            border-top: 1px solid var(--c-border);
            padding-top: 0.8rem;
        }
        .catalog-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .catalog-card .card-meta i {
            font-size: 0.72rem;
            color: var(--c-text-muted);
        }

        /* ===== Featured Section ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }
        .featured-card {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.25rem;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .featured-card:hover {
            transform: translateY(-2px);
            border-color: var(--c-border-strong);
            box-shadow: var(--shadow-md);
        }
        .featured-card .featured-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(14, 90, 90, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--c-primary);
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }
        .featured-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--c-text);
            margin-bottom: 0.6rem;
            line-height: 1.4;
        }
        .featured-card p {
            font-size: 0.9rem;
            color: var(--c-text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .featured-card .featured-link {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--c-primary);
            margin-top: 0.75rem;
        }
        .featured-card .featured-link:hover {
            color: var(--c-primary-dark);
        }

        /* ===== Info Box ===== */
        .info-box {
            background: var(--c-surface-alt);
            border-left: 3px solid var(--c-primary);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 1.5rem 1.75rem;
            box-shadow: var(--shadow-sm);
        }
        .info-box h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--c-text);
            margin-bottom: 1rem;
        }
        .info-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }
        .info-table th,
        .info-table td {
            text-align: left;
            padding: 0.6rem 0.75rem;
            border-bottom: 1px solid var(--c-border);
            color: var(--c-text-secondary);
        }
        .info-table th {
            font-weight: 600;
            color: var(--c-text);
            width: 32%;
            white-space: nowrap;
        }
        .info-table tr:last-child th,
        .info-table tr:last-child td {
            border-bottom: none;
        }
        .info-table tr:nth-child(even) {
            background: rgba(255, 255, 255, 0.5);
        }

        /* ===== Scenario List ===== */
        .scenario-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
            margin-top: 2rem;
        }
        .scenario-item {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 1.15rem 1.35rem;
            display: flex;
            align-items: flex-start;
            gap: 0.85rem;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .scenario-item:hover {
            border-color: var(--c-border-strong);
            box-shadow: var(--shadow-sm);
        }
        .scenario-item .scenario-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(198, 124, 59, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #7A4A1D;
            font-size: 0.95rem;
            flex-shrink: 0;
            margin-top: 0.1rem;
        }
        .scenario-item h4 {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--c-text);
            margin-bottom: 0.3rem;
        }
        .scenario-item p {
            font-size: 0.88rem;
            color: var(--c-text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Testimonial ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }
        .testimonial-card {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.35rem;
            box-shadow: var(--shadow-sm);
            border-left: 3px solid var(--c-secondary);
        }
        .testimonial-card .quote-text {
            font-size: 0.92rem;
            color: var(--c-text-secondary);
            line-height: 1.8;
            margin-bottom: 1rem;
        }
        .testimonial-card .quote-author {
            font-size: 0.82rem;
            color: var(--c-text-muted);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .testimonial-card .quote-author::before {
            content: "";
            width: 24px;
            height: 2px;
            background: var(--c-secondary);
            border-radius: 2px;
        }

        /* ===== News List ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }
        .news-card {
            display: flex;
            flex-direction: column;
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .news-card:hover {
            transform: translateY(-2px);
            border-color: var(--c-border-strong);
            box-shadow: var(--shadow-md);
        }
        .news-card .news-cover {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--c-surface-alt);
        }
        .news-card .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-card .news-body {
            padding: 1.15rem 1.25rem 1.25rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card .news-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--c-text);
            line-height: 1.5;
            margin-bottom: 0.5rem;
        }
        .news-card .news-summary {
            font-size: 0.85rem;
            color: var(--c-text-secondary);
            line-height: 1.7;
            margin-bottom: 0.85rem;
            flex: 1;
        }
        .news-card .news-meta {
            font-size: 0.78rem;
            color: var(--c-text-muted);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.6rem;
            border-top: 1px solid var(--c-border);
            padding-top: 0.75rem;
        }
        .news-card .news-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .news-empty {
            background: var(--c-surface-alt);
            border: 1px dashed var(--c-border-strong);
            border-radius: var(--radius-md);
            padding: 3rem 2rem;
            text-align: center;
            color: var(--c-text-muted);
            font-size: 0.95rem;
        }
        .news-empty img {
            max-width: 240px;
            margin: 0 auto 1.25rem;
            border-radius: var(--radius-md);
            opacity: 0.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--c-primary-dark);
            border-radius: var(--radius-lg);
            padding: 3.5rem 3rem;
            color: var(--c-hero-text);
            margin-bottom: 0;
        }
        .cta-section h2 {
            font-size: 1.9rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
            line-height: 1.35;
            letter-spacing: -0.01em;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(245, 241, 234, 0.82);
            max-width: 560px;
            line-height: 1.85;
            margin-bottom: 1.75rem;
        }
        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: 10px;
            padding: 0.7rem 1.75rem;
            background: #fff;
            color: var(--c-primary-dark);
            border: 1px solid #fff;
            transition: background var(--transition), color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }
        .btn-cta-primary:hover {
            background: var(--c-gold-light);
            border-color: var(--c-gold-light);
            color: var(--c-primary-dark);
        }
        .btn-cta-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 10px;
            padding: 0.7rem 1.75rem;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.55);
            transition: background var(--transition), border-color var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .btn-cta-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }
        .cta-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            align-items: center;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--c-primary-dark);
            color: rgba(245, 241, 234, 0.78);
            padding: 3.5rem 0 1.5rem;
            margin-top: 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid rgba(245, 241, 234, 0.12);
        }
        .site-footer .footer-brand h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }
        .site-footer .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.8;
            color: rgba(245, 241, 234, 0.65);
            margin-bottom: 0;
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
        }
        .site-footer .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .site-footer .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(245, 241, 234, 0.65);
            transition: color var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: #fff;
        }
        .site-footer .footer-bottom {
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(245, 241, 234, 0.45);
        }
        .site-footer .footer-bottom p {
            margin-bottom: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .catalog-grid,
            .featured-grid,
            .news-grid,
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-top: 56px;
            }
            .site-header {
                height: 56px;
            }
            .header-search {
                display: none;
            }
            .navbar-toggler {
                display: flex;
            }
            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--c-surface);
                border-bottom: 1px solid var(--c-border);
                box-shadow: var(--shadow-md);
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 1.5rem;
                gap: 0.5rem;
                display: none;
            }
            .main-nav.is-open {
                display: flex;
            }
            .main-nav .nav-link {
                display: block;
                width: 100%;
                padding: 0.6rem 0;
                font-size: 1rem;
            }
            .main-nav .nav-link.active::after {
                display: none;
            }
            .btn-callout {
                font-size: 0.8rem;
                padding: 0.45rem 1rem;
            }
            section {
                padding: var(--section-pad-sm) 0;
            }
            .cat-hero h1 {
                font-size: 1.85rem;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .catalog-grid,
            .featured-grid,
            .news-grid,
            .testimonial-grid,
            .scenario-list {
                grid-template-columns: 1fr;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-section {
                padding: 2.5rem 1.5rem;
                border-radius: var(--radius-md);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .btn-cta-primary,
            .btn-cta-ghost {
                width: 100%;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .cat-hero h1 {
                font-size: 1.55rem;
            }
            .catalog-card .card-title {
                font-size: 0.98rem;
            }
            .info-table {
                font-size: 0.82rem;
            }
            .info-table th,
            .info-table td {
                padding: 0.5rem 0.5rem;
            }
        }

/* roulang page: article */
:root {
            --c-primary: #0E5A5A;
            --c-primary-dark: #083F3F;
            --c-secondary: #C67C3B;
            --c-accent: #B23A2E;
            --c-bg: #FAF7F2;
            --c-surface: #FFFFFF;
            --c-surface-alt: #F3EFE8;
            --c-text: #1F1B16;
            --c-text-secondary: #4A423A;
            --c-text-muted: #7A7066;
            --c-border: #E5DED4;
            --c-border-strong: #CFC4B6;
            --c-focus: rgba(14, 90, 90, 0.28);
            --c-glass: rgba(250, 247, 242, 0.68);
            --c-glass-border: rgba(14, 90, 90, 0.14);
            --c-hero-bg: #141210;
            --c-hero-text: #F5F1EA;
            --c-gold: #D4A24E;
            --c-gold-light: #E8C88A;
            --c-gold-dark: #B8862E;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(31, 27, 22, 0.05);
            --shadow-md: 0 6px 18px rgba(31, 27, 22, 0.10);
            --shadow-lg: 0 12px 32px rgba(31, 27, 22, 0.14);
            --font-sans: Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --container-max: 1200px;
            --section-pad: 5rem;
            --section-pad-sm: 3rem;
            --transition: 0.22s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.9;
            color: var(--c-text);
            background-color: var(--c-bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 68px;
        }
        a {
            color: var(--c-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--c-primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        .btn:focus-visible,
        .nav-link:focus-visible {
            outline: 3px solid var(--c-focus);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        section {
            padding: var(--section-pad) 0;
        }
        .section-alt {
            background-color: var(--c-surface-alt);
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--c-primary);
            background-color: rgba(14, 90, 90, 0.08);
            border: 1px solid rgba(14, 90, 90, 0.18);
            border-radius: 999px;
            padding: 0.3rem 0.9rem;
            margin-bottom: 1rem;
        }
        .section-title {
            font-size: 1.9rem;
            margin-bottom: 0.75rem;
            color: var(--c-text);
        }
        .section-desc {
            font-size: 1rem;
            color: var(--c-text-secondary);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 2rem;
        }

        /* ===== Header/Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--c-glass);
            backdrop-filter: blur(14px) saturate(1.2);
            -webkit-backdrop-filter: blur(14px) saturate(1.2);
            border-bottom: 1px solid var(--c-glass-border);
            box-shadow: 0 1px 8px rgba(31, 27, 22, 0.06);
            transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
            height: 68px;
        }
        .site-header.scrolled {
            background: var(--c-surface);
            box-shadow: 0 2px 12px rgba(31, 27, 22, 0.10);
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 1rem;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--c-primary-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .navbar-brand:hover {
            color: var(--c-primary);
        }
        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--c-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.25rem;
        }
        .main-nav .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--c-text-secondary);
            padding: 0.5rem 0.25rem;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
            border: none;
            background: transparent;
        }
        .main-nav .nav-link:hover {
            color: var(--c-primary);
        }
        .main-nav .nav-link.active {
            color: var(--c-primary);
        }
        .main-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--c-primary);
            border-radius: 2px;
            transition: width 0.22s ease;
        }
        .main-nav .nav-link:hover::after,
        .main-nav .nav-link.active::after {
            width: 100%;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: 10px;
            padding: 0.45rem 0.75rem;
            gap: 0.5rem;
            transition: border-color var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--c-primary);
        }
        .header-search i {
            color: var(--c-text-muted);
            font-size: 0.85rem;
        }
        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.85rem;
            color: var(--c-text);
            width: 120px;
        }
        .header-search input::placeholder {
            color: var(--c-text-muted);
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--c-primary);
            color: #fff;
            border: none;
            border-radius: 10px;
            padding: 0.65rem 1.4rem;
            font-size: 0.875rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }
        .btn-primary-custom:hover {
            background: var(--c-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--c-primary);
            border: 1px solid var(--c-primary);
            border-radius: 10px;
            padding: 0.65rem 1.4rem;
            font-size: 0.875rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }
        .btn-outline-custom:hover {
            background: rgba(14, 90, 90, 0.08);
            color: var(--c-primary-dark);
            border-color: var(--c-primary-dark);
        }

        /* ===== Article Header ===== */
        .article-header-section {
            background: var(--c-surface-alt);
            border-bottom: 1px solid var(--c-border);
            padding: 3rem 0 2.5rem;
        }
        .article-header-section .category-badge {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--c-primary-dark);
            background: rgba(14, 90, 90, 0.10);
            border: 1px solid rgba(14, 90, 90, 0.18);
            border-radius: 999px;
            padding: 0.25rem 0.9rem;
            margin-bottom: 1rem;
        }
        .article-header-section h1 {
            font-size: 2.25rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--c-text);
            margin-bottom: 1rem;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.5rem 1.5rem;
            font-size: 0.875rem;
            color: var(--c-text-muted);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .article-meta i {
            color: var(--c-primary);
            font-size: 0.8rem;
        }
        .article-meta .separator {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--c-border-strong);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-custom {
            background: transparent;
            padding: 0.75rem 0;
            margin: 0;
            font-size: 0.85rem;
            color: var(--c-text-muted);
        }
        .breadcrumb-custom a {
            color: var(--c-text-secondary);
        }
        .breadcrumb-custom a:hover {
            color: var(--c-primary);
        }
        .breadcrumb-custom .current {
            color: var(--c-text);
            font-weight: 500;
        }

        /* ===== Article Body ===== */
        .article-body-section {
            padding: 3rem 0;
        }
        .article-body-wrap {
            max-width: 780px;
            margin: 0 auto;
        }
        .article-body {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 2.5rem 2.75rem;
            box-shadow: var(--shadow-sm);
            font-size: 1.05rem;
            line-height: 2.0;
            color: var(--c-text);
        }
        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-top: 2.25rem;
            margin-bottom: 1rem;
            color: var(--c-text);
            line-height: 1.35;
        }
        .article-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-top: 1.75rem;
            margin-bottom: 0.75rem;
            color: var(--c-text);
            line-height: 1.4;
        }
        .article-body p {
            margin-bottom: 1.25rem;
        }
        .article-body ul,
        .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 1.25rem;
        }
        .article-body li {
            margin-bottom: 0.5rem;
        }
        .article-body blockquote {
            border-left: 3px solid var(--c-primary);
            background: var(--c-surface-alt);
            padding: 1rem 1.5rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
            font-size: 0.95rem;
            color: var(--c-text-secondary);
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            width: 100%;
            object-fit: cover;
        }
        .not-found-box {
            text-align: center;
            padding: 4rem 1.5rem;
            background: var(--c-surface);
            border: 1px dashed var(--c-border-strong);
            border-radius: var(--radius-md);
        }
        .not-found-box h2 {
            font-size: 1.5rem;
            margin-bottom: 0.75rem;
            color: var(--c-text-secondary);
        }
        .not-found-box p {
            color: var(--c-text-muted);
            margin-bottom: 1.5rem;
        }

        /* ===== Info Box ===== */
        .info-box-custom {
            background: var(--c-surface-alt);
            border-left: 3px solid var(--c-primary);
            border-radius: var(--radius-sm);
            padding: 1.5rem 1.75rem;
            margin: 2rem 0;
        }
        .info-box-custom h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--c-primary-dark);
            margin-bottom: 0.75rem;
        }
        .info-box-custom ul {
            padding-left: 1.25rem;
            margin-bottom: 0;
            font-size: 0.95rem;
            color: var(--c-text-secondary);
            line-height: 1.85;
        }
        .info-box-custom li {
            margin-bottom: 0.35rem;
        }

        /* ===== Related Cards ===== */
        .related-section {
            background: var(--c-surface);
            border-top: 1px solid var(--c-border);
            border-bottom: 1px solid var(--c-border);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .card-custom {
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }
        .card-custom:hover {
            border-color: var(--c-border-strong);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .card-custom .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 1px solid var(--c-border);
        }
        .card-custom .card-body {
            padding: 1.25rem 1.25rem 1.5rem;
        }
        .card-custom .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--c-text);
            margin-bottom: 0.5rem;
            line-height: 1.45;
        }
        .card-custom .card-text {
            font-size: 0.88rem;
            color: var(--c-text-secondary);
            line-height: 1.7;
            margin-bottom: 1rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-custom .card-link {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--c-primary);
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }
        .card-custom .card-link:hover {
            color: var(--c-primary-dark);
        }

        /* ===== Back Entry ===== */
        .back-entry-section {
            background: var(--c-bg);
            padding: 2.5rem 0;
        }
        .back-entry-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.75rem;
            box-shadow: var(--shadow-sm);
        }
        .back-entry-box p {
            margin: 0;
            font-size: 0.95rem;
            color: var(--c-text-secondary);
        }
        .back-entry-box p strong {
            color: var(--c-text);
            font-weight: 700;
        }

        /* ===== Bottom CTA ===== */
        .article-cta-section {
            background: var(--c-primary-dark);
            color: #fff;
            padding: 4rem 0;
        }
        .article-cta-section .section-title {
            color: #fff;
        }
        .article-cta-section .section-desc {
            color: rgba(255, 255, 255, 0.75);
        }
        .article-cta-section .btn-white {
            background: #fff;
            color: var(--c-primary-dark);
            border: none;
            border-radius: 10px;
            padding: 0.75rem 1.75rem;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
            text-decoration: none;
        }
        .article-cta-section .btn-white:hover {
            background: var(--c-gold-light);
            color: var(--c-primary-dark);
            transform: translateY(-1px);
        }
        .article-cta-section .btn-outline-white {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.45);
            border-radius: 10px;
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background var(--transition), border-color var(--transition);
            text-decoration: none;
        }
        .article-cta-section .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--c-primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 3.5rem 0 2rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .site-footer h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .site-footer h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: 0.03em;
        }
        .site-footer p {
            font-size: 0.875rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 0;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 0.5rem;
        }
        .site-footer ul li a {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .site-footer ul li a:hover {
            color: var(--c-gold-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom p {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-header-section h1 {
                font-size: 1.9rem;
            }
            .article-body {
                padding: 2rem 1.75rem;
            }
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-pad: 3rem;
                --section-pad-sm: 2rem;
            }
            body {
                padding-top: 56px;
            }
            .site-header {
                height: 56px;
            }
            .header-inner {
                padding: 0 1rem;
                gap: 0.75rem;
            }
            .navbar-brand {
                font-size: 0.95rem;
            }
            .navbar-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.8rem;
            }
            .main-nav {
                gap: 0.75rem;
            }
            .main-nav .nav-link {
                font-size: 0.82rem;
                padding: 0.4rem 0.2rem;
            }
            .header-search {
                display: none;
            }
            .btn-primary-custom {
                padding: 0.5rem 1rem;
                font-size: 0.8rem;
                border-radius: 8px;
            }
            .article-header-section {
                padding: 2rem 0 1.5rem;
            }
            .article-header-section h1 {
                font-size: 1.55rem;
            }
            .article-meta {
                font-size: 0.8rem;
                gap: 0.4rem 1rem;
            }
            .article-body-section {
                padding: 2rem 0;
            }
            .article-body {
                padding: 1.5rem 1.25rem;
                font-size: 1rem;
                line-height: 1.9;
            }
            .article-body h2 {
                font-size: 1.3rem;
                margin-top: 1.75rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
                margin-top: 1.5rem;
            }
            .article-body blockquote {
                padding: 0.85rem 1rem;
                font-size: 0.9rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .card-custom .card-img {
                height: 56vw;
            }
            .back-entry-box {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }
            .article-cta-section {
                padding: 3rem 0;
            }
            .site-footer {
                padding: 2.5rem 0 1.5rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .navbar-brand {
                font-size: 0.85rem;
                gap: 0.35rem;
            }
            .main-nav .nav-link {
                font-size: 0.78rem;
                gap: 0.5rem;
            }
            .header-actions .btn-primary-custom {
                display: none;
            }
            .article-header-section h1 {
                font-size: 1.35rem;
            }
            .article-body {
                padding: 1.25rem 1rem;
                font-size: 0.95rem;
                line-height: 1.85;
            }
            .info-box-custom {
                padding: 1.25rem 1.25rem;
            }
            .article-cta-section .btn-white,
            .article-cta-section .btn-outline-white {
                padding: 0.65rem 1.25rem;
                font-size: 0.875rem;
                display: block;
                width: 100%;
                text-align: center;
                margin-bottom: 0.75rem;
            }
            .article-cta-section .btn-outline-white {
                margin-bottom: 0;
            }
        }

/* 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}