/* roulang page: index */
:root {
            --dark-base: #171920;
            --dark-card: #20242f;
            --copper: #b8763c;
            --copper-light: #f6e8da;
            --signal-red: #cf3a2c;
            --signal-red-dark: #b32f23;
            --paper-white: #f6f3ed;
            --warm-grey: #ebe6dc;
            --text-dark: #20232b;
            --text-muted: #5c6170;
            --border-soft: #e0d8c8;
            --border-input: #d5ccbc;
            --radius-card: 14px;
            --radius-btn: 10px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.10);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-serif: Georgia, "Songti SC", "SimSun", serif;
            --section-pad: 4.5rem;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: clamp(0.95rem, 1.5vw, 1.05rem);
            line-height: 1.85;
            color: var(--text-dark);
            background-color: var(--paper-white);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--copper);
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease;
        }
        a:hover {
            color: var(--signal-red);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input {
            font-family: inherit;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        @media (min-width: 992px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .section-pad {
            padding: var(--section-pad) 0;
        }
        @media (max-width: 767px) {
            .section-pad {
                padding: 2.5rem 0;
            }
            :root {
                --section-pad: 2.5rem;
            }
        }
        .bg-dark-base {
            background-color: var(--dark-base);
        }
        .bg-paper {
            background-color: var(--paper-white);
        }
        .bg-grey-warm {
            background-color: var(--warm-grey);
        }
        .bg-dark-card {
            background-color: var(--dark-card);
        }
        .text-muted-soft {
            color: var(--text-muted);
        }
        .border-soft {
            border-color: var(--border-soft);
        }
        .badge-pill-custom {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 0.9rem;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 500;
            background-color: var(--dark-card);
            color: #fff;
            line-height: 1.4;
        }
        .badge-red {
            background-color: var(--signal-red);
            color: #fff;
            border-radius: 999px;
            padding: 0.35rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }
        .badge-copper {
            background-color: var(--copper);
            color: #fff;
            border-radius: 999px;
            padding: 0.35rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }
        .btn-primary-red {
            background-color: var(--signal-red);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 0.7rem 1.6rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            cursor: pointer;
        }
        .btn-primary-red:hover, .btn-primary-red:focus {
            background-color: var(--signal-red-dark);
            color: #fff;
            box-shadow: 0 8px 20px rgba(207, 58, 44, 0.3);
            outline: 3px solid var(--copper);
            transform: translateY(-1px);
        }
        .btn-primary-red:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline-copper {
            background: transparent;
            color: var(--copper);
            border: 2px solid var(--copper);
            border-radius: var(--radius-btn);
            padding: 0.6rem 1.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: background-color 0.2s, color 0.2s, box-shadow 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            cursor: pointer;
        }
        .btn-outline-copper:hover, .btn-outline-copper:focus {
            background-color: var(--copper-light);
            color: var(--copper);
            outline: 3px solid var(--copper);
            box-shadow: 0 6px 16px rgba(184, 118, 60, 0.2);
        }
        .btn-outline-copper:active {
            box-shadow: none;
        }
        .btn-light-paper {
            background-color: var(--paper-white);
            color: var(--text-dark);
            border: none;
            border-radius: var(--radius-btn);
            padding: 0.65rem 1.5rem;
            font-weight: 500;
            transition: background-color 0.2s, box-shadow 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-light-paper:hover {
            background-color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .card-custom {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.3s;
            overflow: hidden;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--copper);
            transform: translateY(-4px);
        }
        .card-img-wrap {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .card-img-wrap img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card-img-wrap:hover img {
            transform: scale(1.03);
        }
        .card-body-custom {
            padding: 1.2rem 1.4rem 1.4rem;
        }
        .section-header {
            margin-bottom: 2.2rem;
        }
        .section-title {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-dark);
            margin-bottom: 0.8rem;
        }
        .section-title .highlight-copper {
            color: var(--copper);
        }
        .section-desc {
            font-size: clamp(0.95rem, 1.4vw, 1.05rem);
            color: var(--text-muted);
            max-width: 780px;
            line-height: 1.85;
        }
        .text-on-dark {
            color: #fff;
        }
        .text-on-dark .section-title {
            color: #fff;
        }
        .text-on-dark .section-desc {
            color: #c9c5be;
        }
        .text-on-dark .highlight-copper {
            color: #d9955c;
        }
        hr.divider-custom {
            border: none;
            border-top: 1px solid var(--border-soft);
            margin: 1rem 0;
        }

        /* Navigation */
        .navbar-custom {
            background-color: var(--dark-base);
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            border-bottom: 1px solid rgba(224, 216, 200, 0.12);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
        }
        .navbar-custom .navbar-brand {
            font-weight: 700;
            font-size: 1.15rem;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .navbar-custom .navbar-brand span.logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background-color: var(--signal-red);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
        }
        .navbar-custom .navbar-brand:hover {
            color: #d9955c;
        }
        .navbar-custom .nav-link {
            color: #d5d1c9;
            font-weight: 500;
            font-size: 0.9rem;
            padding: 0.5rem 1rem !important;
            transition: color 0.2s, border-color 0.2s;
            border-bottom: 2px solid transparent;
        }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus {
            color: #fff;
            border-bottom-color: var(--copper);
        }
        .navbar-custom .nav-link.active {
            color: #fff;
            border-bottom-color: var(--copper);
        }
        .navbar-custom .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            border-radius: 8px;
            padding: 0.4rem 0.7rem;
            background: rgba(255, 255, 255, 0.05);
        }
        .navbar-custom .navbar-toggler:focus {
            box-shadow: 0 0 0 3px var(--copper);
            outline: none;
        }
        .navbar-custom .nav-cta {
            background-color: var(--signal-red);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 0.5rem 1.3rem !important;
            font-weight: 600;
            font-size: 0.85rem;
            border: none;
            transition: background-color 0.2s;
            white-space: nowrap;
        }
        .navbar-custom .nav-cta:hover,
        .navbar-custom .nav-cta:focus {
            background-color: var(--signal-red-dark);
            color: #fff;
            border-bottom-color: transparent;
        }
        @media (max-width: 991px) {
            .navbar-custom .navbar-collapse {
                background-color: var(--dark-base);
                border-radius: 0 0 14px 14px;
                padding: 1rem;
                margin-top: 0.5rem;
                border: 1px solid rgba(224, 216, 200, 0.12);
            }
            .navbar-custom .nav-link {
                padding: 0.7rem 0.5rem !important;
                border-bottom: 1px solid rgba(224, 216, 200, 0.08);
                border-radius: 0;
            }
            .navbar-custom .nav-link.active {
                border-left: 3px solid var(--copper);
                border-bottom-color: transparent;
            }
            .navbar-custom .nav-cta {
                margin-top: 0.5rem;
                display: inline-block;
                text-align: center;
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            background-color: var(--dark-base);
            background-image: url('/assets/images/7a3b952c293501fc.jpg');
            background-size: cover;
            background-position: center;
            min-height: 85vh;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(23, 25, 32, 0.92) 0%, rgba(23, 25, 32, 0.78) 45%, rgba(23, 25, 32, 0.55) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 4rem 0;
        }
        .hero-title {
            font-size: clamp(2.1rem, 4vw, 3.25rem);
            font-weight: 700;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 1.4rem;
            letter-spacing: -0.01em;
        }
        .hero-title .highlight-copper {
            color: #d9955c;
        }
        .hero-subtitle {
            font-size: clamp(1rem, 1.5vw, 1.15rem);
            color: #d5d1c9;
            line-height: 1.85;
            max-width: 560px;
            margin-bottom: 2rem;
        }
        .hero-meta-tag {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-bottom: 1.5rem;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.9rem;
            margin-bottom: 1.8rem;
        }
        .hero-status {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: #c9c5be;
            font-size: 0.85rem;
        }
        .hero-status .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: #4ade80;
            animation: pulse-dot 1.6s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.3); }
        }
        .metric-card-hero {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(224, 216, 200, 0.18);
            border-radius: var(--radius-card);
            padding: 1.2rem 1.4rem;
            backdrop-filter: blur(6px);
            transition: background-color 0.3s, border-color 0.3s, transform 0.3s;
            height: 100%;
        }
        .metric-card-hero:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: var(--copper);
            transform: translateY(-3px);
        }
        .metric-value {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .metric-label {
            font-size: 0.8rem;
            color: #b5b1a8;
            margin-top: 0.3rem;
        }
        @media (max-width: 767px) {
            .hero-section {
                min-height: auto;
                padding: 5.5rem 0 3rem;
            }
            .metric-card-hero {
                padding: 0.8rem 1rem;
            }
            .metric-value {
                font-size: 1.5rem;
            }
        }

        /* Service matrix */
        .service-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 1.6rem 1.5rem;
            height: 100%;
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.3s;
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--copper);
            transform: translateY(-4px);
        }
        .service-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background-color: var(--copper-light);
            color: var(--copper);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 1rem;
        }
        .service-card.large {
            grid-column: span 2;
        }
        @media (max-width: 991px) {
            .service-card.large {
                grid-column: span 1;
            }
        }

        /* Comparison */
        .compare-row {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 1.3rem 1.5rem;
            margin-bottom: 1rem;
            transition: border-color 0.3s, box-shadow 0.3s;
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .compare-row:hover {
            border-color: var(--copper);
            box-shadow: var(--shadow-sm);
        }
        .compare-rank {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--dark-base);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .compare-rank.highlight {
            background-color: var(--signal-red);
        }
        .compare-info {
            flex: 1;
            min-width: 180px;
        }
        .compare-info h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.3rem;
        }
        .compare-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .compare-badge {
            flex-shrink: 0;
        }

        /* Data insight */
        .insight-bar {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            height: 100%;
            transition: box-shadow 0.3s;
        }
        .insight-bar:hover {
            box-shadow: var(--shadow-sm);
        }
        .progress-custom {
            height: 8px;
            border-radius: 999px;
            background-color: var(--warm-grey);
            overflow: hidden;
            margin-top: 0.6rem;
        }
        .progress-fill {
            height: 100%;
            border-radius: 999px;
            background-color: var(--copper);
            transition: width 0.8s ease;
        }
        .progress-fill.red {
            background-color: var(--signal-red);
        }

        /* Timeline */
        .timeline-container {
            position: relative;
            padding-left: 2.2rem;
        }
        .timeline-container::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 2px;
            background-color: var(--copper);
            opacity: 0.4;
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding-bottom: 2rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -2.2rem;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background-color: var(--copper);
            border: 3px solid var(--paper-white);
            box-shadow: 0 0 0 2px var(--copper);
        }
        .timeline-item h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.4rem;
        }
        .timeline-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* News list */
        .news-list-item {
            display: flex;
            gap: 1.2rem;
            align-items: center;
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 1rem 1.2rem;
            margin-bottom: 1rem;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .news-list-item:hover {
            border-color: var(--copper);
            box-shadow: var(--shadow-sm);
        }
        .news-thumb {
            width: 80px;
            height: 60px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-content {
            flex: 1;
        }
        .news-content h3 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
        }
        .news-content p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        @media (max-width: 575px) {
            .news-list-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .news-thumb {
                width: 100%;
                height: 120px;
            }
        }

        /* Guarantee */
        .guarantee-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            height: 100%;
            text-align: center;
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.3s;
        }
        .guarantee-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--copper);
            transform: translateY(-4px);
        }
        .guarantee-icon {
            font-size: 1.6rem;
            color: var(--copper);
            margin-bottom: 0.8rem;
        }
        .guarantee-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.4rem;
        }
        .guarantee-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* Recommendation */
        .recommend-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 1.3rem;
            height: 100%;
            transition: box-shadow 0.3s, border-color 0.3s;
            display: flex;
            flex-direction: column;
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--copper);
        }
        .recommend-rank {
            font-size: 2rem;
            font-weight: 700;
            color: var(--copper);
            line-height: 1;
            margin-bottom: 0.5rem;
        }
        .recommend-card h3 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.4rem;
        }
        .recommend-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0.6rem;
        }

        /* Scenario */
        .scenario-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 1.6rem;
            height: 100%;
            text-align: center;
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.3s;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--copper);
            transform: translateY(-4px);
        }
        .scenario-icon {
            font-size: 2rem;
            color: var(--dark-base);
            margin-bottom: 0.8rem;
        }
        .scenario-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }
        .scenario-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* Entry grid */
        .entry-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.3s;
            height: 100%;
            display: block;
        }
        .entry-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--copper);
            transform: translateY(-4px);
        }
        .entry-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .entry-card-body {
            padding: 1rem 1.3rem 1.2rem;
        }
        .entry-card-body h3 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: var(--text-dark);
        }
        .entry-card-body p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* Feedback */
        .feedback-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            height: 100%;
            transition: box-shadow 0.3s;
        }
        .feedback-card:hover {
            box-shadow: var(--shadow-sm);
        }
        .feedback-stars {
            color: #eab308;
            margin-bottom: 0.7rem;
            font-size: 0.9rem;
        }
        .feedback-card p {
            font-size: 0.95rem;
            color: var(--text-dark);
            margin-bottom: 1rem;
            font-style: italic;
        }
        .feedback-author {
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* Notice */
        .notice-block {
            background: var(--warm-grey);
            border-left: 4px solid var(--copper);
            border-radius: 10px;
            padding: 1.4rem 1.6rem;
            margin-bottom: 1rem;
        }
        .notice-block p {
            font-size: 0.95rem;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        .notice-block p:last-child {
            margin-bottom: 0;
        }

        /* Search guide */
        .step-number-block {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 1.3rem 1.5rem;
            margin-bottom: 0.8rem;
            transition: box-shadow 0.3s;
        }
        .step-number-block:hover {
            box-shadow: var(--shadow-sm);
        }
        .step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--dark-base);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
            flex-shrink: 0;
        }
        .step-num.red {
            background-color: var(--signal-red);
        }
        .step-content h3 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.3rem;
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            margin-bottom: 0.8rem;
            overflow: hidden;
            background: #fff;
        }
        .faq-accordion .accordion-button {
            background-color: #fff;
            color: var(--text-dark);
            font-weight: 600;
            font-size: 1rem;
            padding: 1.1rem 1.4rem;
            border: none;
            box-shadow: none;
            border-radius: var(--radius-card);
            transition: color 0.2s, border-color 0.2s;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background-color: var(--paper-white);
            color: var(--copper);
            border-left: 4px solid var(--copper);
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px var(--copper);
            outline: none;
        }
        .faq-accordion .accordion-button::after {
            filter: invert(1);
        }
        .faq-accordion .accordion-body {
            padding: 1.2rem 1.4rem;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.85;
        }

        /* CTA form */
        .cta-section {
            background-color: var(--dark-base);
            background-image: linear-gradient(135deg, rgba(23,25,32,0.96) 0%, rgba(35,38,48,0.9) 100%);
            border-radius: var(--radius-card);
            padding: 3rem 2.5rem;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background-color: rgba(184, 118, 60, 0.12);
        }
        .cta-title {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .cta-desc {
            color: #c9c5be;
            font-size: 0.95rem;
            max-width: 480px;
            margin-bottom: 1.6rem;
        }
        .cta-form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .cta-form input[type="email"] {
            flex: 1;
            min-width: 200px;
            background-color: #fff;
            border: 2px solid var(--border-input);
            border-radius: var(--radius-btn);
            padding: 0.7rem 1.1rem;
            font-size: 0.95rem;
            color: var(--text-dark);
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .cta-form input[type="email"]:focus {
            border-color: var(--copper);
            outline: none;
            box-shadow: 0 0 0 3px rgba(184, 118, 60, 0.3);
        }
        .cta-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background-color: var(--signal-red);
            color: #fff;
            border-radius: 999px;
            padding: 0.4rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
        }

        /* Footer */
        .footer-section {
            background-color: var(--dark-base);
            color: #c9c5be;
            padding: 3.5rem 0 2rem;
        }
        .footer-section h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .footer-section .footer-link {
            color: #b5b1a8;
            font-size: 0.9rem;
            display: block;
            margin-bottom: 0.5rem;
            transition: color 0.2s;
        }
        .footer-section .footer-link:hover {
            color: #d9955c;
        }
        .footer-bottom {
            border-top: 1px solid rgba(224, 216, 200, 0.12);
            margin-top: 2rem;
            padding-top: 1.5rem;
            font-size: 0.8rem;
            color: #8a877f;
        }

        /* Responsive tweaks */
        @media (max-width: 575px) {
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .cta-section {
                padding: 2rem 1.5rem;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form input[type="email"] {
                width: 100%;
                min-width: auto;
            }
            .cta-form .btn {
                width: 100%;
                justify-content: center;
            }
        }
        @media (min-width: 576px) and (max-width: 991px) {
            .metric-card-hero {
                padding: 1rem;
            }
            .metric-value {
                font-size: 1.3rem;
            }
        }
        .d-flex-gap {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .icon-gap {
            margin-right: 0.3rem;
        }

/* roulang page: category1 */
:root {
            --dark-base: #171920;
            --dark-card: #20242f;
            --copper: #b8763c;
            --copper-light: #f6e8da;
            --signal-red: #cf3a2c;
            --signal-red-dark: #b32f23;
            --paper-white: #f6f3ed;
            --warm-grey: #ebe6dc;
            --text-dark: #20232b;
            --text-muted: #5c6170;
            --border-soft: #e0d8c8;
            --border-input: #d5ccbc;
            --radius-card: 14px;
            --radius-btn: 10px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.10);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-serif: Georgia, "Songti SC", "SimSun", serif;
            --section-pad: 4.5rem;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            font-size: clamp(0.95rem, 1.5vw, 1.05rem);
            line-height: 1.85;
            color: var(--text-dark);
            background-color: var(--paper-white);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--copper);
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease;
        }

        a:hover {
            color: var(--signal-red);
            text-decoration: none;
        }

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

        button,
        input {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

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

        .bg-dark-card {
            background-color: var(--dark-card);
        }

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

        .border-soft {
            border-color: var(--border-soft);
        }

        .badge-pill-custom {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 0.9rem;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 500;
            background-color: var(--dark-card);
            color: #fff;
            line-height: 1.4;
        }

        .badge-red {
            background-color: var(--signal-red);
            color: #fff;
            border-radius: 999px;
            padding: 0.35rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }

        .badge-copper {
            background-color: var(--copper);
            color: #fff;
            border-radius: 999px;
            padding: 0.35rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }

        .btn-primary-red {
            background-color: var(--signal-red);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 0.7rem 1.6rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            cursor: pointer;
        }

        .btn-primary-red:hover,
        .btn-primary-red:focus {
            background-color: var(--signal-red-dark);
            color: #fff;
            box-shadow: 0 8px 20px rgba(207, 58, 44, 0.3);
            outline: 3px solid var(--copper);
            transform: translateY(-1px);
        }

        .btn-primary-red:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline-copper {
            background: transparent;
            color: var(--copper);
            border: 2px solid var(--copper);
            border-radius: var(--radius-btn);
            padding: 0.6rem 1.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: background-color 0.2s, color 0.2s, box-shadow 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            cursor: pointer;
        }

        .btn-outline-copper:hover,
        .btn-outline-copper:focus {
            background-color: var(--copper-light);
            color: var(--copper);
            outline: 3px solid var(--copper);
            box-shadow: 0 6px 16px rgba(184, 118, 60, 0.2);
        }

        .btn-outline-copper:active {
            box-shadow: none;
        }

        .btn-light-paper {
            background-color: var(--paper-white);
            color: var(--text-dark);
            border: none;
            border-radius: var(--radius-btn);
            padding: 0.65rem 1.5rem;
            font-weight: 500;
            transition: background-color 0.2s, box-shadow 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-light-paper:hover {
            background-color: #fff;
            box-shadow: var(--shadow-sm);
        }

        .card-custom {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.3s;
            overflow: hidden;
            height: 100%;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--copper);
            transform: translateY(-4px);
        }

        .card-img-wrap {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }

        .card-img-wrap img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .card-custom:hover .card-img-wrap img {
            transform: scale(1.03);
        }

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

        .card-title-custom {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-dark);
        }

        .card-text-custom {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .navbar-custom {
            background-color: var(--dark-base);
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 2px 12px rgba(0,0,0,0.2);
        }

        .navbar-custom .navbar-brand {
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .navbar-custom .navbar-brand:hover {
            color: var(--copper);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background-color: var(--signal-red);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .navbar-custom .nav-link {
            color: #d5d2c9;
            font-weight: 500;
            margin-right: 0.8rem;
            transition: color 0.2s, border-color 0.2s;
            border-bottom: 2px solid transparent;
            padding-bottom: 0.25rem;
        }

        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus {
            color: #fff;
            border-bottom-color: var(--copper);
        }

        .navbar-custom .nav-link.active {
            color: var(--copper);
            border-bottom-color: var(--copper);
        }

        .nav-cta {
            background-color: var(--signal-red);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 0.55rem 1.4rem;
            font-weight: 600;
            font-size: 0.9rem;
            transition: background-color 0.2s, box-shadow 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        .nav-cta:hover,
        .nav-cta:focus {
            background-color: var(--signal-red-dark);
            color: #fff;
            box-shadow: 0 6px 16px rgba(207, 58, 44, 0.3);
        }

        .footer-section {
            background-color: var(--dark-base);
            color: #c9c6be;
            padding-top: 4rem;
            padding-bottom: 0;
        }

        .footer-section h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1.2rem;
        }

        .footer-link {
            display: block;
            color: #b5b1a8;
            padding: 0.25rem 0;
            font-size: 0.9rem;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 1.5rem 0;
            margin-top: 3rem;
            font-size: 0.85rem;
            color: #8f8c84;
        }

        /* 分类页特有样式 */
        .category-hero {
            background-image: linear-gradient(rgba(23,25,32,0.85), rgba(23,25,32,0.92)), url('/assets/images/9367cbd4275dfc8d.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            padding: 4.5rem 0 3.5rem;
            margin-bottom: 2rem;
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: #ccc;
            margin-bottom: 1.2rem;
        }

        .breadcrumb-custom a {
            color: var(--copper);
        }

        .breadcrumb-custom .separator {
            color: #777;
        }

        .category-hero h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: #fff;
        }

        .category-hero .lead {
            font-size: 1.15rem;
            color: #ddd;
            max-width: 720px;
            margin-bottom: 1.5rem;
        }

        .intro-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 2rem;
        }

        .intro-card img {
            border-radius: var(--radius-card);
            max-height: 280px;
            object-fit: cover;
            width: 100%;
        }

        .resource-list-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow 0.3s, border-color 0.3s;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .resource-list-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--copper);
        }

        .resource-list-card .card-img {
            height: 180px;
            object-fit: cover;
            width: 100%;
        }

        .resource-list-card .card-body {
            padding: 1.25rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .resource-list-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .resource-list-card .card-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            flex: 1;
        }

        .rank-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 1.5rem;
            transition: box-shadow 0.3s, border-color 0.3s;
            height: 100%;
            display: flex;
            gap: 1.2rem;
            align-items: center;
        }

        .rank-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--copper);
        }

        .rank-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--copper);
            line-height: 1;
            min-width: 60px;
            text-align: center;
        }

        .rank-card img {
            width: 90px;
            height: 90px;
            object-fit: cover;
            border-radius: 10px;
            flex-shrink: 0;
        }

        .step-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 1.8rem;
            transition: box-shadow 0.3s, border-color 0.3s;
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .step-card .step-number {
            font-size: 1.2rem;
            font-weight: 700;
            background-color: var(--copper);
            color: #fff;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
        }

        .scenario-card {
            background: var(--paper-white);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 1.8rem;
            transition: box-shadow 0.3s, border-color 0.3s, transform 0.3s;
            height: 100%;
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--copper);
            transform: translateY(-4px);
        }

        .scenario-card i {
            font-size: 2rem;
            color: var(--copper);
            margin-bottom: 1rem;
        }

        .accordion-custom .accordion-item {
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card) !important;
            margin-bottom: 1rem;
            background: #fff;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            background-color: #fff;
            color: var(--text-dark);
            font-weight: 600;
            padding: 1.25rem 1.5rem;
            border: none;
            box-shadow: none;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background-color: var(--copper-light);
            color: var(--copper);
            border-left: 4px solid var(--copper);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            outline: none;
            border-color: var(--copper);
            box-shadow: 0 0 0 3px rgba(184, 118, 60, 0.2);
        }

        .accordion-custom .accordion-body {
            padding: 1.25rem 1.5rem;
            color: var(--text-muted);
            border-left: 4px solid transparent;
        }

        .cta-section {
            background-color: var(--dark-base);
            background-image: linear-gradient(rgba(23,25,32,0.95), rgba(23,25,32,0.95)), url('/assets/images/b347a905265d563e.jpg');
            background-size: cover;
            background-position: center;
            color: #fff;
            padding: 4rem 0;
        }

        .cta-card {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-card);
            padding: 2.5rem;
            max-width: 650px;
            margin: 0 auto;
        }

        .cta-card input[type="email"] {
            background-color: #f5f2ec;
            border: 1px solid var(--border-input);
            border-radius: var(--radius-btn);
            padding: 0.8rem 1.2rem;
            font-size: 0.95rem;
            width: 100%;
            color: var(--text-dark);
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .cta-card input[type="email"]:focus {
            outline: none;
            border-color: var(--copper);
            box-shadow: 0 0 0 3px rgba(184, 118, 60, 0.2);
        }

        @media (max-width: 991.98px) {
            .navbar-custom .navbar-collapse {
                background-color: var(--dark-base);
                padding: 1rem;
                border-radius: 0 0 12px 12px;
                margin-top: 0.5rem;
            }
            .navbar-custom .nav-link {
                margin-right: 0;
                padding: 0.5rem 0;
            }
            .nav-cta {
                margin-top: 0.5rem;
            }
            .category-hero {
                padding: 3rem 0 2.5rem;
            }
            .section-pad {
                padding: 3rem 0;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --section-pad: 2.5rem;
            }
            .category-hero h1 {
                font-size: 1.75rem;
            }
            .rank-card {
                flex-direction: column;
                text-align: center;
            }
            .rank-card img {
                width: 70px;
                height: 70px;
                margin: 0 auto;
            }
            .rank-number {
                min-width: auto;
            }
            .resource-list-card .card-img {
                height: 160px;
            }
            .cta-card {
                padding: 1.8rem 1.2rem;
            }
        }

        @media (max-width: 575.98px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .intro-card {
                padding: 1.25rem;
            }
            .step-card {
                padding: 1.25rem;
            }
            .scenario-card {
                padding: 1.25rem;
            }
        }

/* roulang page: index */
/* ============ 设计变量 ============ */
        :root {
            --c-bg: #F4F1EB;
            --c-bg-dark: #1B1816;
            --c-bg-darker: #141110;
            --c-surface: #FFFFFF;
            --c-surface-warm: #FBF9F5;
            --c-ink: #211D1A;
            --c-muted: #6B625A;
            --c-muted-light: #A39A8F;
            --c-accent: #B4372A;
            --c-accent-dark: #8F2A20;
            --c-accent-2: #D9A441;
            --c-accent-2-dark: #B8892E;
            --c-line: #E3DDD3;
            --c-line-dark: #3A3430;
            --c-success: #3E6B4F;
            --c-focus: #D9A441;
            --c-danger-tint: #F5E8E5;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Hiragino Sans GB', sans-serif;
            --font-serif: 'Noto Serif CJK SC', 'Source Han Serif SC', 'Songti SC', 'SimSun', serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'PingFang SC', monospace;
            --shadow-sm: 0 1px 2px rgba(27,24,22,0.05);
            --shadow-md: 0 8px 24px rgba(27,24,22,0.08);
            --shadow-lg: 0 14px 32px rgba(27,24,22,0.12);
            --shadow-xl: 0 24px 48px rgba(27,24,22,0.16);
            --radius-card: 10px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-pill: 999px;
            --transition-base: all 0.25s ease;
            --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --section-pad-y: 64px;
            --section-pad-y-mobile: 40px;
        }
        
        /* ============ 基础 Reset ============ */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            color: var(--c-ink);
            background-color: var(--c-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        a {
            color: var(--c-ink);
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease;
        }
        
        a:hover {
            color: var(--c-accent);
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible,
        .accordion-button:focus-visible,
        .btn:focus-visible,
        .nav-link:focus-visible,
        .form-control:focus-visible {
            outline: 3px solid var(--c-focus) !important;
            outline-offset: 2px !important;
            box-shadow: none !important;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button {
            cursor: pointer;
            font-family: var(--font-sans);
        }
        
        input, select, textarea {
            font-family: var(--font-sans);
        }
        
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-serif);
            font-weight: 600;
            line-height: 1.35;
            color: var(--c-ink);
            margin-bottom: 0.75em;
        }
        
        h1 {
            font-size: 36px;
            letter-spacing: 0.01em;
        }
        
        h2 {
            font-size: 26px;
            letter-spacing: 0.01em;
        }
        
        h3 {
            font-size: 19px;
            letter-spacing: 0.01em;
        }
        
        p {
            margin-bottom: 1em;
        }
        
        /* ============ 容器 ============ */
        .container-fluid {
            padding-left: 0;
            padding-right: 0;
        }
        
        .custom-container {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        
        /* ============ Section 通用 ============ */
        .section-block {
            padding-top: var(--section-pad-y);
            padding-bottom: var(--section-pad-y);
            position: relative;
        }
        
        .section-block--warm {
            background-color: var(--c-bg);
        }
        
        .section-block--white {
            background-color: var(--c-surface);
        }
        
        .section-block--dark {
            background-color: var(--c-bg-dark);
            color: #F5F2ED;
        }
        
        .section-block--dark h2,
        .section-block--dark h3 {
            color: #F5F2ED;
        }
        
        .section-block--dark .text-muted-custom {
            color: #C9C1B6;
        }
        
        .section-header {
            margin-bottom: 36px;
        }
        
        .section-header .section-kicker {
            display: inline-block;
            font-family: var(--font-sans);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--c-accent);
            margin-bottom: 8px;
            background-color: rgba(180,55,42,0.08);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
        }
        
        .section-header .section-title {
            font-size: 28px;
            margin-bottom: 10px;
        }
        
        .section-header .section-desc {
            color: var(--c-muted);
            font-size: 15px;
            max-width: 720px;
            line-height: 1.8;
        }
        
        .section-block--dark .section-header .section-desc {
            color: #C9C1B6;
        }
        
        .text-muted-custom {
            color: var(--c-muted);
        }
        
        /* ============ 导航 ============ */
        .site-header {
            background-color: var(--c-bg-dark);
            border-bottom: 1px solid var(--c-line-dark);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 2px 8px rgba(27,24,22,0.15);
        }
        
        .site-header .navbar {
            padding-top: 12px;
            padding-bottom: 12px;
            background-color: var(--c-bg-dark) !important;
        }
        
        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #F5F2ED;
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 0.02em;
            text-decoration: none;
            white-space: nowrap;
        }
        
        .site-header .navbar-brand:hover {
            color: var(--c-accent-2);
            text-decoration: none;
        }
        
        .brand-icon {
            width: 34px;
            height: 34px;
            background-color: var(--c-accent);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            flex-shrink: 0;
        }
        
        .site-header .navbar-nav {
            gap: 4px;
        }
        
        .site-header .nav-link {
            color: #D8D0C6;
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.02em;
            padding: 8px 14px;
            border-radius: 4px;
            transition: var(--transition-base);
            white-space: nowrap;
        }
        
        .site-header .nav-link:hover {
            color: #fff;
            text-decoration: none;
            background-color: rgba(255,255,255,0.06);
        }
        
        .site-header .nav-link.active {
            color: var(--c-accent-2);
            font-weight: 600;
            position: relative;
        }
        
        .site-header .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background-color: var(--c-accent-2);
            border-radius: 2px;
        }
        
        .header-status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: var(--c-accent-2);
            color: #1B1816;
            font-size: 12px;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.04em;
            white-space: nowrap;
            text-transform: uppercase;
        }
        
        .header-cta {
            background-color: var(--c-accent);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-btn);
            border: none;
            transition: var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        
        .header-cta:hover {
            background-color: var(--c-accent-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(180,55,42,0.35);
        }
        
        .header-cta:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        
        /* Offcanvas 移动端导航 */
        .offcanvas-custom {
            background-color: var(--c-bg-dark);
            color: #F5F2ED;
        }
        
        .offcanvas-custom .offcanvas-header {
            border-bottom: 1px solid var(--c-line-dark);
            padding: 16px 20px;
        }
        
        .offcanvas-custom .offcanvas-title {
            color: #F5F2ED;
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 700;
        }
        
        .offcanvas-custom .btn-close {
            filter: invert(1) brightness(0.8);
            opacity: 0.8;
        }
        
        .offcanvas-custom .nav-link {
            color: #D8D0C6;
            font-size: 16px;
            padding: 12px 20px;
            border-bottom: 1px solid var(--c-line-dark);
            transition: var(--transition-base);
        }
        
        .offcanvas-custom .nav-link:hover {
            color: #fff;
            background-color: rgba(255,255,255,0.06);
            text-decoration: none;
        }
        
        .offcanvas-custom .nav-link.active {
            color: var(--c-accent-2);
            font-weight: 600;
        }
        
        /* ============ Hero 首屏 ============ */
        .hero-section {
            position: relative;
            min-height: 68vh;
            display: flex;
            align-items: center;
            background: linear-gradient(180deg, rgba(27,24,22,0.86) 0%, rgba(27,24,22,0.92) 60%, rgba(20,17,16,0.96) 100%),
                        url('/assets/images/7a3b952c293501fc.jpg') center/cover no-repeat;
            padding-top: 60px;
            padding-bottom: 60px;
            overflow: hidden;
        }
        
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: 
                radial-gradient(circle at 20% 30%, rgba(217,164,65,0.06) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(180,55,42,0.05) 0%, transparent 50%);
            pointer-events: none;
        }
        
        .hero-section::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(/%23n)' opacity='0.04'/%3E%3C/svg%3E");
            pointer-events: none;
            mix-blend-mode: overlay;
        }
        
        .hero-section .custom-container {
            position: relative;
            z-index: 2;
        }
        
        .hero-content {
            color: #F5F2ED;
        }
        
        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--c-accent-2);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        
        .hero-kicker .dot-pulse {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--c-accent-2);
            animation: pulse-dot 2s infinite;
        }
        
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.7); }
        }
        
        .hero-content h1 {
            font-size: 38px;
            color: #FFFFFF;
            margin-bottom: 18px;
            line-height: 1.4;
            letter-spacing: 0.015em;
        }
        
        .hero-content .hero-subtitle {
            color: #D8D0C6;
            font-size: 16px;
            line-height: 1.9;
            max-width: 560px;
            margin-bottom: 28px;
        }
        
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 32px;
        }
        
        .btn-hero-primary {
            background-color: var(--c-accent);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            border: none;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }
        
        .btn-hero-primary:hover {
            background-color: var(--c-accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(180,55,42,0.4);
            text-decoration: none;
        }
        
        .btn-hero-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        
        .btn-hero-secondary {
            background-color: transparent;
            color: #F5F2ED;
            font-size: 16px;
            font-weight: 500;
            padding: 14px 24px;
            border-radius: var(--radius-btn);
            border: 1.5px solid #5A524A;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }
        
        .btn-hero-secondary:hover {
            border-color: var(--c-accent-2);
            color: var(--c-accent-2);
            text-decoration: none;
            background-color: rgba(217,164,65,0.08);
        }
        
        .hero-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 8px;
        }
        
        .hero-stat-card {
            background-color: rgba(27,24,22,0.7);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: var(--radius-card);
            padding: 16px 18px;
            text-align: center;
            backdrop-filter: blur(6px);
            transition: var(--transition-base);
        }
        
        .hero-stat-card:hover {
            border-color: rgba(217,164,65,0.4);
            transform: translateY(-2px);
        }
        
        .hero-stat-card .stat-num {
            font-family: var(--font-mono);
            font-size: 24px;
            font-weight: 700;
            color: var(--c-accent-2);
            line-height: 1.3;
            letter-spacing: 0.02em;
        }
        
        .hero-stat-card .stat-label {
            font-size: 13px;
            color: #C9C1B6;
            margin-top: 4px;
            letter-spacing: 0.03em;
        }
        
        /* ============ 卡片通用 ============ */
        .custom-card {
            background-color: var(--c-surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--c-line);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-slow);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        
        .custom-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: #D5CDC2;
        }
        
        .custom-card .card-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background-color: rgba(180,55,42,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--c-accent);
            font-size: 18px;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        
        .custom-card h3 {
            font-size: 18px;
            margin-bottom: 8px;
            line-height: 1.5;
        }
        
        .custom-card .card-desc {
            color: var(--c-muted);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 0;
        }
        
        /* ============ 按钮通用 ============ */
        .btn-primary-custom {
            background-color: var(--c-accent);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 11px 24px;
            border-radius: var(--radius-btn);
            border: none;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }
        
        .btn-primary-custom:hover {
            background-color: var(--c-accent-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(180,55,42,0.3);
        }
        
        .btn-primary-custom:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        
        .btn-outline-custom {
            background-color: transparent;
            color: var(--c-ink);
            font-size: 15px;
            font-weight: 500;
            padding: 11px 24px;
            border-radius: var(--radius-btn);
            border: 1.5px solid var(--c-ink);
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }
        
        .btn-outline-custom:hover {
            background-color: var(--c-ink);
            color: #fff;
            text-decoration: none;
        }
        
        .btn-outline-custom--light {
            border-color: #5A524A;
            color: #F5F2ED;
        }
        
        .btn-outline-custom--light:hover {
            background-color: #F5F2ED;
            border-color: #F5F2ED;
            color: var(--c-bg-dark);
        }
        
        /* ============ 徽章 ============ */
        .badge-accent-2 {
            background-color: var(--c-accent-2);
            color: #1B1816;
            font-weight: 700;
            font-size: 11px;
            padding: 5px 12px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        
        .badge-accent-red {
            background-color: var(--c-accent);
            color: #fff;
            font-weight: 600;
            font-size: 11px;
            padding: 5px 12px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.04em;
        }
        
        .badge-light {
            background-color: #F1EDE6;
            color: var(--c-muted);
            font-weight: 500;
            font-size: 11px;
            padding: 5px 12px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.04em;
        }
        
        .badge-success-custom {
            background-color: rgba(62,107,79,0.15);
            color: var(--c-success);
            font-weight: 600;
            font-size: 11px;
            padding: 5px 12px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.04em;
        }
        
        /* ============ 表单 ============ */
        .form-custom .form-control {
            background-color: var(--c-surface-warm);
            border: 1.5px solid var(--c-line);
            border-radius: var(--radius-input);
            color: var(--c-ink);
            font-size: 15px;
            padding: 12px 16px;
            transition: var(--transition-base);
            min-height: 48px;
        }
        
        .form-custom .form-control::placeholder {
            color: var(--c-muted-light);
        }
        
        .form-custom .form-control:focus {
            border-color: var(--c-focus);
            background-color: #fff;
            box-shadow: 0 0 0 3px rgba(217,164,65,0.15);
            outline: none;
        }
        
        .form-custom .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--c-ink);
            letter-spacing: 0.02em;
            margin-bottom: 6px;
        }
        
        .form-custom--dark .form-control {
            background-color: rgba(255,255,255,0.06);
            border-color: rgba(255,255,255,0.2);
            color: #F5F2ED;
        }
        
        .form-custom--dark .form-control::placeholder {
            color: #8F857A;
        }
        
        .form-custom--dark .form-control:focus {
            background-color: rgba(255,255,255,0.1);
            border-color: var(--c-focus);
            color: #fff;
            box-shadow: 0 0 0 3px rgba(217,164,65,0.2);
        }
        
        .form-custom--dark .form-label {
            color: #D8D0C6;
        }
        
        .form-custom--dark .form-select {
            background-color: rgba(255,255,255,0.06);
            border-color: rgba(255,255,255,0.2);
            color: #F5F2ED;
            border-radius: var(--radius-input);
            min-height: 48px;
            padding: 12px 16px;
        }
        
        .form-custom--dark .form-select:focus {
            border-color: var(--c-focus);
            box-shadow: 0 0 0 3px rgba(217,164,65,0.2);
            background-color: rgba(255,255,255,0.1);
            color: #fff;
        }
        
        .form-custom--dark .form-check-input {
            background-color: rgba(255,255,255,0.1);
            border-color: rgba(255,255,255,0.3);
        }
        
        .form-custom--dark .form-check-input:checked {
            background-color: var(--c-accent-2);
            border-color: var(--c-accent-2);
        }
        
        .form-custom--dark .form-check-label {
            color: #C9C1B6;
        }
        
        /* ============ FAQ 手风琴 ============ */
        .accordion-custom .accordion-item {
            background-color: transparent;
            border: 1px solid var(--c-line);
            border-radius: 8px !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        
        .accordion-custom .accordion-header {
            margin: 0;
        }
        
        .accordion-custom .accordion-button {
            background-color: var(--c-surface);
            color: var(--c-ink);
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            padding: 18px 20px;
            border: none;
            box-shadow: none !important;
            border-radius: 8px !important;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }
        
        .accordion-custom .accordion-button:not(.collapsed) {
            background-color: #FBF6F2;
            color: var(--c-accent);
            border-bottom: 1px solid var(--c-line);
        }
        
        .accordion-custom .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%23B4372A' d='M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4z'/%3E%3C/svg%3E");
            transition: transform 0.3s ease;
        }
        
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
        }
        
        .accordion-custom .accordion-button:hover {
            background-color: #FBF6F2;
        }
        
        .accordion-custom .accordion-body {
            padding: 18px 20px;
            font-size: 14px;
            color: var(--c-muted);
            line-height: 1.8;
            background-color: var(--c-surface);
        }
        
        /* 深色 accordion */
        .accordion-custom-dark .accordion-item {
            border-color: var(--c-line-dark);
        }
        
        .accordion-custom-dark .accordion-button {
            background-color: #24201D;
            color: #D8D0C6;
        }
        
        .accordion-custom-dark .accordion-button:not(.collapsed) {
            background-color: #2E2925;
            color: var(--c-accent-2);
            border-bottom-color: var(--c-line-dark);
        }
        
        .accordion-custom-dark .accordion-button:hover {
            background-color: #2E2925;
        }
        
        .accordion-custom-dark .accordion-body {
            background-color: #24201D;
            color: #C9C1B6;
        }
        
        /* ============ 列表样式 ============ */
        .info-list-item {
            display: flex;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid var(--c-line);
            transition: var(--transition-base);
        }
        
        .info-list-item:last-child {
            border-bottom: none;
        }
        
        .info-list-item:hover {
            padding-left: 8px;
            border-left: 3px solid var(--c-accent);
            border-left-color: var(--c-accent);
            padding-left: 16px;
        }
        
        .info-list-item .list-date {
            font-family: var(--font-mono);
            font-size: 13px;
            font-weight: 600;
            color: var(--c-accent);
            min-width: 80px;
            flex-shrink: 0;
            padding-top: 2px;
        }
        
        .info-list-item .list-content h4 {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
            line-height: 1.5;
        }
        
        .info-list-item .list-content p {
            font-size: 13px;
            color: var(--c-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        
        /* ============ 对比表格 ============ */
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-card);
            border: 1px solid var(--c-line);
            box-shadow: var(--shadow-sm);
        }
        
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 640px;
            margin-bottom: 0;
        }
        
        .compare-table th {
            background-color: var(--c-bg-dark);
            color: #F5F2ED;
            font-family: var(--font-serif);
            font-size: 15px;
            font-weight: 600;
            padding: 16px 18px;
            text-align: center;
            letter-spacing: 0.02em;
            border-bottom: 3px solid var(--c-accent);
        }
        
        .compare-table th:first-child {
            text-align: left;
        }
        
        .compare-table th.highlight-col {
            background-color: var(--c-accent);
            border-bottom-color: var(--c-accent-dark);
        }
        
        .compare-table td {
            padding: 14px 18px;
            text-align: center;
            font-size: 14px;
            border-bottom: 1px solid var(--c-line);
            color: var(--c-ink);
        }
        
        .compare-table td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--c-muted);
        }
        
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        
        .compare-table tr:hover td {
            background-color: #FBF8F4;
        }
        
        .compare-table .highlight-col {
            background-color: rgba(180,55,42,0.05);
        }
        
        .compare-table tr:hover .highlight-col {
            background-color: rgba(180,55,42,0.08);
        }
        
        /* ============ 时间线 ============ */
        .timeline-wrapper {
            position: relative;
            padding-left: 28px;
        }
        
        .timeline-wrapper::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background-color: var(--c-line);
        }
        
        .timeline-item {
            position: relative;
            padding-bottom: 24px;
            padding-left: 20px;
        }
        
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -25px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            border: 2px solid var(--c-accent);
            background-color: #fff;
            z-index: 1;
        }
        
        .timeline-item .timeline-time {
            font-family: var(--font-mono);
            font-size: 15px;
            font-weight: 700;
            color: var(--c-accent);
            letter-spacing: 0.04em;
        }
        
        .timeline-item h4 {
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            margin: 4px 0 6px;
            line-height: 1.5;
        }
        
        .timeline-item p {
            font-size: 13px;
            color: var(--c-muted);
            margin-bottom: 0;
            line-height: 1.65;
        }
        
        /* ============ 图片卡片 ============ */
        .img-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            cursor: pointer;
            transition: var(--transition-slow);
            aspect-ratio: 16/9;
            background-color: #E8E3DA;
        }
        
        .img-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .img-card:hover img {
            transform: scale(1.03);
        }
        
        .img-card .img-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(27,24,22,0.75) 100%);
            display: flex;
            align-items: flex-end;
            padding: 20px;
            transition: var(--transition-base);
        }
        
        .img-card .img-overlay .img-title {
            color: #fff;
            font-family: var(--font-serif);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.45;
        }
        
        /* ============ 页脚 ============ */
        .site-footer {
            background-color: var(--c-bg-darker);
            color: #C9C1B6;
            padding-top: 48px;
            padding-bottom: 24px;
            border-top: 1px solid var(--c-line-dark);
        }
        
        .site-footer .footer-brand {
            color: #F5F2ED;
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
            display: inline-block;
        }
        
        .site-footer .footer-brand:hover {
            color: var(--c-accent-2);
            text-decoration: none;
        }
        
        .site-footer .footer-desc {
            font-size: 13px;
            color: #8F857A;
            line-height: 1.7;
            max-width: 320px;
        }
        
        .site-footer .footer-heading {
            font-family: var(--font-sans);
            font-size: 14px;
            font-weight: 700;
            color: #F5F2ED;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        
        .site-footer .footer-link {
            display: block;
            color: #C9C1B6;
            font-size: 13px;
            padding: 4px 0;
            transition: var(--transition-base);
        }
        
        .site-footer .footer-link:hover {
            color: var(--c-accent-2);
            text-decoration: none;
            padding-left: 4px;
        }
        
        .site-footer .footer-bottom {
            border-top: 1px solid var(--c-line-dark);
            margin-top: 36px;
            padding-top: 18px;
            font-size: 12px;
            color: #7A7066;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
        }
        
        .site-footer .footer-bottom a {
            color: #7A7066;
        }
        
        .site-footer .footer-bottom a:hover {
            color: var(--c-accent-2);
            text-decoration: none;
        }
        
        /* ============ 响应式 ============ */
        @media (max-width: 992px) {
            h1 { font-size: 30px; }
            h2 { font-size: 23px; }
            h3 { font-size: 17px; }
            .hero-content h1 { font-size: 30px; }
            .hero-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
            .hero-stat-card .stat-num { font-size: 20px; }
            .section-block { padding-top: 48px; padding-bottom: 48px; }
            .site-header .navbar-brand { font-size: 16px; }
        }
        
        @media (max-width: 768px) {
            .section-block { padding-top: var(--section-pad-y-mobile); padding-bottom: var(--section-pad-y-mobile); }
            .custom-container { padding-left: 16px; padding-right: 16px; }
            h1 { font-size: 28px; }
            h2 { font-size: 21px; }
            h3 { font-size: 16px; }
            .hero-section { min-height: auto; padding-top: 40px; padding-bottom: 40px; }
            .hero-content h1 { font-size: 26px; line-height: 1.45; }
            .hero-content .hero-subtitle { font-size: 14px; line-height: 1.8; }
            .hero-cta-group { flex-direction: column; }
            .hero-cta-group .btn { width: 100%; }
            .hero-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
            .hero-stat-card { padding: 12px 10px; }
            .hero-stat-card .stat-num { font-size: 18px; }
            .hero-stat-card .stat-label { font-size: 11px; }
            .section-header .section-title { font-size: 21px; }
            .compare-table { min-width: 480px; }
            .compare-table th, .compare-table td { padding: 10px 12px; font-size: 12px; }
            .timeline-wrapper { padding-left: 20px; }
            .timeline-wrapper::before { left: 5px; }
            .timeline-item { padding-left: 16px; }
            .timeline-item::before { left: -19px; width: 10px; height: 10px; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
            .accordion-custom .accordion-button { font-size: 14px; padding: 14px 15px; }
            .accordion-custom .accordion-body { font-size: 13px; padding: 14px 15px; }
        }
        
        @media (max-width: 520px) {
            .hero-stats-grid { grid-template-columns: 1fr 1fr; gap: 6px; }
            .hero-stat-card { padding: 10px 8px; }
            .hero-stat-card .stat-num { font-size: 16px; }
            .brand-icon { width: 28px; height: 28px; font-size: 11px; }
            .site-header .navbar-brand { font-size: 14px; }
            .section-header .section-kicker { font-size: 11px; }
        }
        
        /* ============ 辅助工具 ============ */
        .gap-2-custom { gap: 8px; }
        .gap-3-custom { gap: 16px; }
        .gap-4-custom { gap: 24px; }
        .mb-0 { margin-bottom: 0 !important; }
        .text-accent { color: var(--c-accent) !important; }
        .text-accent-2 { color: var(--c-accent-2) !important; }
        .link-accent { color: var(--c-accent); font-weight: 500; }
        .link-accent:hover { color: var(--c-accent-dark); }
        
        .divider-custom {
            height: 1px;
            background-color: var(--c-line);
            margin: 24px 0;
            border: none;
        }
        
        .divider-custom--dark {
            background-color: var(--c-line-dark);
        }

/* roulang page: category1 */
:root {
        --dark-base: #171920;
        --dark-card: #20242f;
        --copper: #b8763c;
        --copper-light: #f6e8da;
        --signal-red: #cf3a2c;
        --signal-red-dark: #b32f23;
        --paper-white: #f6f3ed;
        --warm-grey: #ebe6dc;
        --text-dark: #20232b;
        --text-muted: #5c6170;
        --border-soft: #e0d8c8;
        --border-input: #d5ccbc;
        --radius-card: 14px;
        --radius-btn: 10px;
        --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.06);
        --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.10);
        --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        --font-serif: Georgia, "Songti SC", "SimSun", serif;
        --section-pad: 4.5rem;
    }
    :root {
        --section-pad: 2.5rem;
    }
    :root {
        --c-bg: #F4F1EB;
        --c-bg-dark: #1B1816;
        --c-bg-darker: #141110;
        --c-surface: #FFFFFF;
        --c-surface-warm: #FBF9F5;
        --c-ink: #211D1A;
        --c-muted: #6B625A;
        --c-muted-light: #A39A8F;
        --c-accent: #B4372A;
        --c-accent-dark: #8F2A20;
        --c-accent-2: #D9A441;
        --c-accent-2-dark: #B8892E;
        --c-line: #E3DDD3;
        --c-line-dark: #3A3430;
        --c-success: #3E6B4F;
        --c-focus: #D9A441;
        --c-danger-tint: #F5E8E5;
        --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Hiragino Sans GB', sans-serif;
        --font-serif: 'Noto Serif CJK SC', 'Source Han Serif SC', 'Songti SC', 'SimSun', serif;
        --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'PingFang SC', monospace;
        --shadow-sm: 0 1px 2px rgba(27,24,22,0.05);
        --shadow-md: 0 8px 24px rgba(27,24,22,0.08);
        --shadow-lg: 0 14px 32px rgba(27,24,22,0.12);
        --shadow-xl: 0 24px 48px rgba(27,24,22,0.16);
        --radius-card: 10px;
        --radius-btn: 8px;
        --radius-input: 8px;
        --radius-pill: 999px;
        --transition-base: all 0.25s ease;
        --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        --container-max: 1200px;
        --section-pad-y: 64px;
        --section-pad-y-mobile: 40px;
    }
    /* roulang page: category-911-video */
    :root {
        --dark-base: #171920;
        --dark-card: #20242f;
        --copper: #b8763c;
        --copper-light: #f6e8da;
        --signal-red: #cf3a2c;
        --signal-red-dark: #b32f23;
        --paper-white: #f6f3ed;
        --warm-grey: #ebe6dc;
        --text-dark: #20232b;
        --text-muted: #5c6170;
        --border-soft: #e0d8c8;
        --border-input: #d5ccbc;
        --radius-card: 14px;
        --radius-btn: 10px;
        --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.06);
        --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.10);
        --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        --font-serif: Georgia, "Songti SC", "SimSun", serif;
        --section-pad: 4.5rem;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-sans);
        font-size: clamp(0.95rem, 1.5vw, 1.05rem);
        line-height: 1.85;
        color: var(--text-dark);
        background-color: var(--paper-white);
        -webkit-font-smoothing: antialiased;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

    a {
        color: var(--copper);
        text-decoration: none;
        transition: color 0.2s ease, border-color 0.2s ease;
    }

    a:hover {
        color: var(--signal-red);
        text-decoration: none;
    }

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

    button, input, select, textarea {
        font-family: inherit;
    }

    .container-custom {
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    @media (min-width: 768px) {
        .container-custom {
            padding-left: 2rem;
            padding-right: 2rem;
        }
    }

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

    @media (max-width: 768px) {
        .section-pad {
            padding: 2.5rem 0;
        }
    }

    .bg-dark-card {
        background-color: var(--dark-card);
    }

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

    .border-soft {
        border-color: var(--border-soft);
    }

    .badge-pill-custom {
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        padding: 0.4rem 0.9rem;
        border-radius: 999px;
        font-size: 0.8rem;
        font-weight: 500;
        background-color: var(--dark-card);
        color: #fff;
        line-height: 1.4;
    }

    .badge-red {
        background-color: var(--signal-red);
        color: #fff;
        border-radius: 999px;
        padding: 0.35rem 0.8rem;
        font-size: 0.75rem;
        font-weight: 600;
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
    }

    .badge-copper {
        background-color: var(--copper);
        color: #fff;
        border-radius: 999px;
        padding: 0.35rem 0.8rem;
        font-size: 0.75rem;
        font-weight: 600;
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
    }

    .badge-soft {
        background-color: rgba(27, 24, 22, 0.06);
        color: var(--text-dark);
        border-radius: 999px;
        padding: 0.35rem 0.8rem;
        font-size: 0.75rem;
        font-weight: 500;
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
    }

    .badge-yellow {
        background-color: var(--c-accent-2);
        color: #1B1816;
        border-radius: 999px;
        padding: 0.35rem 0.8rem;
        font-size: 0.75rem;
        font-weight: 600;
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
    }

    .btn-primary-red {
        background-color: var(--signal-red);
        color: #fff;
        border: none;
        border-radius: var(--radius-btn);
        padding: 0.7rem 1.6rem;
        font-weight: 600;
        font-size: 0.95rem;
        transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s, outline-color 0.2s;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        cursor: pointer;
    }

    .btn-primary-red:hover,
    .btn-primary-red:focus {
        background-color: var(--signal-red-dark);
        color: #fff;
        box-shadow: 0 8px 20px rgba(207, 58, 44, 0.3);
        outline: 3px solid var(--copper);
        outline-offset: 2px;
        transform: translateY(-1px);
    }

    .btn-primary-red:active {
        transform: translateY(0);
        box-shadow: none;
        outline: none;
    }

    .btn-outline-copper {
        background: transparent;
        color: var(--copper);
        border: 2px solid var(--copper);
        border-radius: var(--radius-btn);
        padding: 0.6rem 1.5rem;
        font-weight: 600;
        font-size: 0.95rem;
        transition: background-color 0.2s, color 0.2s, box-shadow 0.2s, outline-color 0.2s;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        cursor: pointer;
    }

    .btn-outline-copper:hover,
    .btn-outline-copper:focus {
        background-color: var(--copper);
        color: #fff;
        box-shadow: 0 8px 20px rgba(184, 118, 60, 0.25);
        outline: 3px solid var(--copper-light);
        outline-offset: 2px;
        transform: translateY(-1px);
    }

    .btn-outline-copper:active {
        transform: translateY(0);
        box-shadow: none;
    }

    .btn-outline-dark {
        background: transparent;
        color: var(--text-dark);
        border: 2px solid var(--text-dark);
        border-radius: var(--radius-btn);
        padding: 0.6rem 1.5rem;
        font-weight: 600;
        font-size: 0.9rem;
        transition: background-color 0.2s, color 0.2s, box-shadow 0.2s, outline-color 0.2s;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        cursor: pointer;
    }

    .btn-outline-dark:hover,
    .btn-outline-dark:focus {
        background-color: var(--text-dark);
        color: #fff;
        outline: 3px solid rgba(32, 35, 43, 0.2);
        outline-offset: 2px;
    }

    /* ===== Header / Navigation ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1050;
        background-color: var(--dark-base);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
    }

    .site-header .navbar {
        padding-top: 0.75rem;
        padding-bottom: 0.75rem;
        min-height: 64px;
    }

    .site-header .navbar-brand {
        display: inline-flex;
        align-items: center;
        gap: 0.6rem;
        font-size: 1.15rem;
        font-weight: 700;
        letter-spacing: 0.02em;
        color: #fff;
        transition: color 0.2s;
        white-space: nowrap;
    }

    .site-header .navbar-brand:hover {
        color: var(--copper-light);
    }

    .site-header .brand-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 34px;
        height: 34px;
        border-radius: 8px;
        background: linear-gradient(135deg, var(--copper) 0%, var(--signal-red) 100%);
        color: #fff;
        font-size: 0.95rem;
        flex-shrink: 0;
    }

    .site-header .navbar-nav {
        gap: 0.25rem;
    }

    .site-header .navbar-nav .nav-link {
        font-size: 0.9rem;
        font-weight: 500;
        letter-spacing: 0.02em;
        color: rgba(255, 255, 255, 0.75);
        padding: 0.5rem 0.85rem !important;
        border-radius: 6px;
        transition: color 0.2s, background-color 0.2s, border-color 0.2s;
        border-bottom: 2px solid transparent;
    }

    .site-header .navbar-nav .nav-link:hover {
        color: #fff;
        background-color: rgba(255, 255, 255, 0.06);
    }

    .site-header .navbar-nav .nav-link.active {
        color: #fff;
        background-color: rgba(207, 58, 44, 0.18);
        border-bottom-color: var(--signal-red);
        font-weight: 600;
    }

    .site-header .navbar-toggler {
        border: 1px solid rgba(255, 255, 255, 0.25);
        padding: 0.4rem 0.75rem;
        transition: border-color 0.2s, background-color 0.2s;
    }

    .site-header .navbar-toggler:hover {
        border-color: rgba(255, 255, 255, 0.5);
        background-color: rgba(255, 255, 255, 0.08);
    }

    .site-header .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    .gap-3-custom {
        gap: 0.9rem !important;
    }

    .header-status-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        font-size: 0.76rem;
        font-weight: 600;
        color: var(--copper-light);
        letter-spacing: 0.03em;
        white-space: nowrap;
    }

    .header-status-badge i {
        color: var(--copper);
        font-size: 0.6rem;
        animation: pulse-dot 2s ease-in-out infinite;
    }

    @keyframes pulse-dot {
        0%, 100% { opacity: 1; }
        50% { opacity: 0.35; }
    }

    .header-cta {
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        background-color: var(--copper);
        color: #fff;
        font-size: 0.82rem;
        font-weight: 700;
        letter-spacing: 0.02em;
        padding: 0.5rem 1.25rem;
        border-radius: 999px;
        transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s, outline-color 0.2s;
        white-space: nowrap;
        cursor: pointer;
        border: none;
    }

    .header-cta:hover,
    .header-cta:focus {
        background-color: var(--signal-red);
        color: #fff;
        box-shadow: 0 6px 18px rgba(207, 58, 44, 0.35);
        transform: translateY(-1px);
        outline: 3px solid var(--copper-light);
        outline-offset: 2px;
    }

    .offcanvas-custom {
        background-color: var(--dark-base);
        color: #fff;
        max-width: 320px;
    }

    .offcanvas-custom .offcanvas-header {
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .offcanvas-custom .offcanvas-title {
        color: #fff;
        font-weight: 700;
        font-size: 1.05rem;
        letter-spacing: 0.02em;
    }

    .offcanvas-custom .btn-close-white {
        filter: invert(1) grayscale(100%) brightness(200%);
    }

    .offcanvas-custom .navbar-nav {
        gap: 0.35rem;
    }

    .offcanvas-custom .nav-link {
        color: rgba(255, 255, 255, 0.75);
        font-size: 0.95rem;
        font-weight: 500;
        padding: 0.7rem 0.75rem !important;
        border-radius: 8px;
        transition: all 0.2s;
        border-left: 3px solid transparent;
    }

    .offcanvas-custom .nav-link:hover {
        color: #fff;
        background-color: rgba(255, 255, 255, 0.06);
    }

    .offcanvas-custom .nav-link.active {
        color: #fff;
        background-color: rgba(207, 58, 44, 0.18);
        border-left-color: var(--signal-red);
        font-weight: 600;
    }

    /* ===== Category Hero Banner (compact) ===== */
    .category-hero {
        background-color: var(--dark-base);
        background-image: linear-gradient(165deg, rgba(27, 24, 22, 0.92) 30%, rgba(27, 24, 22, 0.75) 100%), url('/assets/images/7a3b952c293501fc.jpg');
        background-size: cover;
        background-position: center 35%;
        color: #fff;
        padding: 2.5rem 0 2.75rem;
        position: relative;
        border-bottom: 3px solid var(--copper);
    }

    .category-hero::after {
        content: "";
        position: absolute;
        inset: 0;
        background: radial-gradient(ellipse at 75% 30%, rgba(207, 58, 44, 0.18) 0%, transparent 55%);
        pointer-events: none;
    }

    .category-hero .container-custom {
        position: relative;
        z-index: 1;
    }

    .breadcrumb-category {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.82rem;
        font-weight: 500;
        letter-spacing: 0.03em;
        color: rgba(255, 255, 255, 0.6);
        margin-bottom: 0.9rem;
    }

    .breadcrumb-category a {
        color: rgba(255, 255, 255, 0.7);
        transition: color 0.2s;
    }

    .breadcrumb-category a:hover {
        color: var(--copper-light);
    }

    .breadcrumb-category .separator {
        color: rgba(255, 255, 255, 0.35);
    }

    .breadcrumb-category .current {
        color: var(--copper-light);
        font-weight: 600;
    }

    .category-hero h1 {
        font-family: var(--font-serif);
        font-size: clamp(1.55rem, 3.5vw, 2.25rem);
        line-height: 1.3;
        font-weight: 700;
        color: #fff;
        margin-bottom: 0.7rem;
        letter-spacing: 0.01em;
    }

    .category-hero .hero-desc {
        font-size: 0.95rem;
        line-height: 1.7;
        color: rgba(255, 255, 255, 0.75);
        max-width: 620px;
        margin-bottom: 1rem;
    }

    .category-hero .hero-stats {
        display: flex;
        flex-wrap: wrap;
        gap: 1.5rem;
        margin-top: 0.25rem;
    }

    .hero-stat-item {
        display: flex;
        flex-direction: column;
        gap: 0.1rem;
    }

    .hero-stat-item .stat-num {
        font-family: var(--font-mono);
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--copper);
        line-height: 1.3;
    }

    .hero-stat-item .stat-label {
        font-size: 0.76rem;
        color: rgba(255, 255, 255, 0.6);
        letter-spacing: 0.03em;
    }

    /* ===== Filter Toolbar ===== */
    .filter-toolbar-section {
        background-color: #fff;
        border-bottom: 1px solid var(--border-soft);
        padding: 1rem 0;
        position: sticky;
        top: 64px;
        z-index: 900;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    }

    .filter-toolbar {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 0.55rem;
    }

    .filter-toolbar .filter-label {
        font-size: 0.78rem;
        font-weight: 600;
        letter-spacing: 0.05em;
        color: var(--text-muted);
        text-transform: uppercase;
        margin-right: 0.25rem;
    }

    .filter-pill {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        padding: 0.35rem 0.95rem;
        border-radius: 999px;
        font-size: 0.8rem;
        font-weight: 500;
        border: 1px solid var(--border-soft);
        background-color: #fff;
        color: var(--text-dark);
        cursor: pointer;
        transition: all 0.2s;
        white-space: nowrap;
    }

    .filter-pill:hover {
        border-color: var(--copper);
        color: var(--copper);
        background-color: var(--copper-light);
    }

    .filter-pill.active {
        background-color: var(--copper);
        border-color: var(--copper);
        color: #fff;
        font-weight: 600;
    }

    .filter-pill .filter-count {
        font-size: 0.65rem;
        opacity: 0.7;
    }

    /* ===== Archive Card Grid ===== */
    .archive-grid-section {
        background-color: var(--paper-white);
        padding: 2.5rem 0 3rem;
    }

    .archive-grid-section .section-heading {
        margin-bottom: 1.75rem;
    }

    .section-heading h2 {
        font-family: var(--font-serif);
        font-size: clamp(1.3rem, 2.5vw, 1.6rem);
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: 0.4rem;
        letter-spacing: 0.01em;
    }

    .section-heading .section-sub {
        font-size: 0.88rem;
        color: var(--text-muted);
        line-height: 1.6;
        max-width: 560px;
    }

    .archive-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    @media (min-width: 576px) {
        .archive-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 1.25rem;
        }
    }

    @media (min-width: 992px) {
        .archive-grid {
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
    }

    .archive-card {
        background-color: #fff;
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-soft);
        transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        display: flex;
        flex-direction: column;
    }

    .archive-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-lg);
        border-color: rgba(207, 58, 44, 0.2);
    }

    .archive-card .card-image-wrap {
        position: relative;
        aspect-ratio: 16 / 9;
        overflow: hidden;
        background-color: var(--warm-grey);
    }

    .archive-card .card-image-wrap img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }

    .archive-card:hover .card-image-wrap img {
        transform: scale(1.03);
    }

    .archive-card .card-image-wrap .card-duration-badge {
        position: absolute;
        bottom: 0.6rem;
        right: 0.6rem;
        background-color: rgba(23, 25, 32, 0.82);
        color: #fff;
        font-size: 0.7rem;
        font-weight: 600;
        padding: 0.25rem 0.65rem;
        border-radius: 999px;
        letter-spacing: 0.03em;
    }

    .archive-card .card-image-wrap .card-grade-badge {
        position: absolute;
        top: 0.6rem;
        left: 0.6rem;
        background-color: rgba(207, 58, 44, 0.88);
        color: #fff;
        font-size: 0.65rem;
        font-weight: 600;
        padding: 0.22rem 0.6rem;
        border-radius: 999px;
        letter-spacing: 0.04em;
    }

    .archive-card .card-body-custom {
        padding: 1rem 1.1rem 1.15rem;
        flex-grow: 1;
        display: flex;
        flex-direction: column;
        gap: 0.45rem;
    }

    .archive-card .card-title {
        font-size: 0.95rem;
        font-weight: 700;
        line-height: 1.45;
        color: var(--text-dark);
        margin: 0;
        letter-spacing: 0.01em;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .archive-card .card-summary {
        font-size: 0.8rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin: 0;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .archive-card .card-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 0.4rem;
        margin-top: auto;
        padding-top: 0.3rem;
    }

    .archive-card .card-tags .tag {
        font-size: 0.68rem;
        font-weight: 500;
        padding: 0.2rem 0.55rem;
        border-radius: 999px;
        background-color: var(--warm-grey);
        color: var(--text-muted);
        letter-spacing: 0.02em;
    }

    .archive-card .card-tags .tag.tag-red {
        background-color: rgba(207, 58, 44, 0.08);
        color: var(--signal-red);
    }

    .archive-card .card-tags .tag.tag-copper {
        background-color: rgba(184, 118, 60, 0.1);
        color: var(--copper);
    }

    .archive-card .card-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 0.72rem;
        color: var(--text-muted);
        padding-top: 0.45rem;
        border-top: 1px solid var(--border-soft);
    }

    .archive-card .card-meta .meta-date {
        display: inline-flex;
        align-items: center;
        gap: 0.3rem;
    }

    .archive-card .card-meta .meta-status {
        display: inline-flex;
        align-items: center;
        gap: 0.3rem;
        font-weight: 500;
    }

    .archive-card .card-meta .meta-status i {
        font-size: 0.55rem;
        color: var(--c-success);
    }

    /* ===== Quick Jump Timeline ===== */
    .quick-jump-section {
        background-color: var(--dark-base);
        padding: 2.25rem 0;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .quick-jump-section .section-heading h2 {
        color: #fff;
    }

    .quick-jump-section .section-heading .section-sub {
        color: rgba(255, 255, 255, 0.6);
    }

    .quick-jump-capsules {
        display: flex;
        flex-wrap: wrap;
        gap: 0.7rem;
        margin-top: 1.2rem;
    }

    .jump-capsule {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.55rem 1.2rem;
        border-radius: 999px;
        background-color: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.15);
        color: rgba(255, 255, 255, 0.8);
        font-family: var(--font-mono);
        font-size: 0.85rem;
        font-weight: 600;
        letter-spacing: 0.04em;
        transition: all 0.25s;
        cursor: pointer;
    }

    .jump-capsule:hover,
    .jump-capsule:focus {
        background-color: var(--copper);
        border-color: var(--copper);
        color: #fff;
        box-shadow: 0 6px 18px rgba(184, 118, 60, 0.35);
        outline: 3px solid var(--copper-light);
        outline-offset: 2px;
    }

    .jump-capsule .capsule-dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background-color: var(--signal-red);
        flex-shrink: 0;
    }

    .jump-capsule:hover .capsule-dot {
        background-color: #fff;
    }

    /* ===== Deep Articles ===== */
    .deep-articles-section {
        background-color: #fff;
        padding: 2.5rem 0 3rem;
    }

    .article-list-horizontal {
        display: flex;
        flex-direction: column;
        gap: 0;
    }

    .article-row {
        display: flex;
        gap: 1.2rem;
        padding: 1.2rem 0.75rem;
        border-bottom: 1px solid var(--border-soft);
        transition: background-color 0.2s, padding-left 0.2s;
        border-radius: 8px;
    }

    .article-row:hover {
        background-color: var(--paper-white);
        padding-left: 1.1rem;
    }

    .article-row .article-thumb {
        flex-shrink: 0;
        width: 100px;
        height: 68px;
        border-radius: 8px;
        overflow: hidden;
        background-color: var(--warm-grey);
    }

    .article-row .article-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .article-row .article-info {
        flex-grow: 1;
        display: flex;
        flex-direction: column;
        gap: 0.25rem;
    }

    .article-row .article-title {
        font-size: 0.92rem;
        font-weight: 700;
        color: var(--text-dark);
        line-height: 1.45;
        margin: 0;
    }

    .article-row .article-summary {
        font-size: 0.8rem;
        color: var(--text-muted);
        line-height: 1.55;
        margin: 0;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .article-row .article-date {
        font-size: 0.72rem;
        color: var(--text-muted);
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
    }

    /* ===== Watch Guide ===== */
    .watch-guide-section {
        background-color: var(--paper-white);
        padding: 2.5rem 0 3rem;
    }

    .guide-steps-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    @media (min-width: 576px) {
        .guide-steps-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (min-width: 992px) {
        .guide-steps-grid {
            grid-template-columns: repeat(4, 1fr);
        }
    }

    .guide-step-card {
        background-color: #fff;
        border-radius: var(--radius-card);
        padding: 1.35rem 1.2rem;
        border: 1px solid var(--border-soft);
        box-shadow: var(--shadow-sm);
        transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    .guide-step-card:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
        border-color: rgba(207, 58, 44, 0.15);
    }

    .guide-step-card .step-number {
        font-family: var(--font-mono);
        font-size: 0.75rem;
        font-weight: 700;
        color: var(--signal-red);
        letter-spacing: 0.06em;
        text-transform: uppercase;
    }

    .guide-step-card .step-title {
        font-size: 0.92rem;
        font-weight: 700;
        color: var(--text-dark);
        line-height: 1.4;
    }

    .guide-step-card .step-desc {
        font-size: 0.78rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin: 0;
    }

    /* ===== Subscribe CTA ===== */
    .subscribe-category-section {
        background-color: var(--copper-light);
        background-image: linear-gradient(135deg, rgba(246, 232, 218, 0.95) 0%, rgba(246, 232, 218, 0.75) 100%);
        padding: 2.75rem 0;
        border-top: 2px solid var(--copper);
    }

    .subscribe-category-wrap {
        display: flex;
        flex-wrap: wrap;
        gap: 2rem;
        align-items: center;
        justify-content: space-between;
    }

    .subscribe-category-left {
        flex: 1 1 320px;
    }

    .subscribe-category-left h2 {
        font-family: var(--font-serif);
        font-size: clamp(1.25rem, 2vw, 1.5rem);
        font-weight: 700;
        color: var(--text-dark);
        margin-bottom: 0.45rem;
    }

    .subscribe-category-left p {
        font-size: 0.88rem;
        color: var(--text-muted);
        line-height: 1.65;
        margin: 0;
        max-width: 460px;
    }

    .subscribe-category-form {
        flex: 1 1 320px;
        display: flex;
        flex-wrap: wrap;
        gap: 0.7rem;
    }

    .subscribe-category-form .form-control {
        flex: 1 1 220px;
        background-color: #fff;
        border: 1px solid var(--border-input);
        border-radius: var(--radius-input);
        padding: 0.7rem 1rem;
        font-size: 0.88rem;
        color: var(--text-dark);
        transition: border-color 0.2s, box-shadow 0.2s, outline-color 0.2s;
    }

    .subscribe-category-form .form-control::placeholder {
        color: var(--text-muted);
        opacity: 0.7;
    }

    .subscribe-category-form .form-control:focus {
        border-color: var(--copper);
        box-shadow: 0 0 0 3px rgba(184, 118, 60, 0.15);
        outline: none;
    }

    .subscribe-category-form .btn-subscribe {
        background-color: var(--signal-red);
        color: #fff;
        border: none;
        border-radius: var(--radius-btn);
        padding: 0.7rem 1.5rem;
        font-weight: 600;
        font-size: 0.88rem;
        transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s, outline-color 0.2s;
        cursor: pointer;
        white-space: nowrap;
        display: inline-flex;
        align-items: center;
        gap: 0.45rem;
    }

    .subscribe-category-form .btn-subscribe:hover,
    .subscribe-category-form .btn-subscribe:focus {
        background-color: var(--signal-red-dark);
        box-shadow: 0 8px 20px rgba(207, 58, 44, 0.3);
        outline: 3px solid var(--copper);
        outline-offset: 2px;
        transform: translateY(-1px);
    }

    .subscribe-category-form .btn-subscribe:active {
        transform: translateY(0);
        box-shadow: none;
    }

    /* ===== Footer ===== */
    .site-footer {
        background-color: var(--dark-base);
        color: rgba(255, 255, 255, 0.7);
        padding: 3rem 0 1.5rem;
        margin-top: auto;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .site-footer .footer-brand {
        display: inline-block;
        font-size: 1.1rem;
        font-weight: 700;
        letter-spacing: 0.02em;
        color: #fff;
        margin-bottom: 0.7rem;
        transition: color 0.2s;
    }

    .site-footer .footer-brand:hover {
        color: var(--copper-light);
    }

    .site-footer .footer-desc {
        font-size: 0.82rem;
        line-height: 1.65;
        color: rgba(255, 255, 255, 0.55);
        max-width: 280px;
        margin: 0;
    }

    .site-footer .footer-heading {
        font-size: 0.8rem;
        font-weight: 700;
        letter-spacing: 0.06em;
        text-transform: uppercase;
        color: rgba(255, 255, 255, 0.45);
        margin-bottom: 1rem;
    }

    .site-footer .footer-link {
        display: block;
        font-size: 0.82rem;
        color: rgba(255, 255, 255, 0.65);
        padding: 0.3rem 0;
        transition: color 0.2s, padding-left 0.2s;
    }

    .site-footer .footer-link:hover {
        color: var(--copper-light);
        padding-left: 0.35rem;
    }

    .site-footer .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        margin-top: 2rem;
        padding-top: 1.25rem;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: 0.5rem;
        font-size: 0.75rem;
        color: rgba(255, 255, 255, 0.4);
        letter-spacing: 0.02em;
    }

    /* ===== Responsive ===== */
    @media (max-width: 768px) {
        .site-header .navbar {
            padding-top: 0.6rem;
            padding-bottom: 0.6rem;
        }

        .site-header .navbar-brand {
            font-size: 1rem;
        }

        .category-hero {
            padding: 1.75rem 0 2rem;
        }

        .category-hero h1 {
            font-size: 1.45rem;
        }

        .category-hero .hero-stats {
            gap: 1rem;
        }

        .hero-stat-item .stat-num {
            font-size: 1.1rem;
        }

        .filter-toolbar-section {
            top: 56px;
            padding: 0.7rem 0;
        }

        .filter-toolbar {
            gap: 0.4rem;
        }

        .filter-pill {
            font-size: 0.72rem;
            padding: 0.3rem 0.7rem;
        }

        .archive-grid-section {
            padding: 2rem 0 2.25rem;
        }

        .quick-jump-section {
            padding: 1.75rem 0;
        }

        .jump-capsule {
            font-size: 0.75rem;
            padding: 0.45rem 0.95rem;
        }

        .deep-articles-section {
            padding: 2rem 0 2.25rem;
        }

        .article-row {
            gap: 0.85rem;
            padding: 1rem 0.5rem;
        }

        .article-row .article-thumb {
            width: 72px;
            height: 52px;
        }

        .article-row .article-title {
            font-size: 0.85rem;
        }

        .watch-guide-section {
            padding: 2rem 0 2.25rem;
        }

        .subscribe-category-section {
            padding: 2rem 0;
        }

        .subscribe-category-wrap {
            gap: 1.25rem;
        }

        .site-footer {
            padding: 2.25rem 0 1.25rem;
        }

        .site-footer .footer-bottom {
            flex-direction: column;
            gap: 0.3rem;
        }
    }

    @media (max-width: 576px) {
        .archive-grid {
            gap: 1rem;
        }

        .archive-card .card-body-custom {
            padding: 0.85rem 0.9rem 1rem;
        }

        .archive-card .card-title {
            font-size: 0.88rem;
        }
    }

    /* ===== Focus visible for accessibility ===== */
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    .filter-pill:focus-visible,
    .jump-capsule:focus-visible {
        outline: 3px solid var(--c-focus);
        outline-offset: 2px;
        border-radius: 4px;
    }

    /* ===== Reduced motion ===== */
    @media (prefers-reduced-motion: reduce) {
        *,
        *::before,
        *::after {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
            scroll-behavior: auto !important;
        }
    }

/* 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}