/* roulang page: index */
:root {
            --ink: #1A1D23;
            --copper: #B8965A;
            --copper-hover: #a6844b;
            --warm-bg: #F7F7F5;
            --card-bg: #FFFFFF;
            --line: #E8E6E1;
            --muted: #5C6068;
            --green: #3E7C5B;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(26, 29, 35, 0.04);
            --shadow-hover: 0 8px 24px rgba(26, 29, 35, 0.08);
            --spacing-section: 100px;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', '思源宋体', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', '思源黑体', 'Microsoft YaHei', sans-serif;
            --transition: 0.25s ease;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--warm-bg);
            color: var(--ink);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-serif);
            color: var(--ink);
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 0.75rem;
        }

        h1 {
            font-size: 2.75rem;
            font-weight: 900;
            letter-spacing: -0.01em;
        }
        h2 {
            font-size: 1.85rem;
            font-weight: 700;
            letter-spacing: 0.01em;
        }
        h3 {
            font-size: 1.25rem;
            font-weight: 600;
        }
        h4 {
            font-size: 1.05rem;
            font-weight: 600;
            font-family: var(--font-sans);
        }

        p {
            margin-bottom: 1rem;
            color: #3a3e46;
        }
        .text-muted-custom {
            color: var(--muted);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--copper);
        }
        a:focus-visible {
            outline: 2px solid var(--copper);
            outline-offset: 3px;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ============ HEADER ============ */
        .site-header {
            background-color: rgba(247, 247, 245, 0.98);
            border-bottom: 1px solid var(--line);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(26, 29, 35, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: nowrap;
        }
        .brand-logo {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.4rem;
            color: var(--ink);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color var(--transition);
        }
        .brand-logo:hover {
            color: var(--copper);
        }
        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background-color: var(--ink);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .main-nav li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: #3a3e46;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: color var(--transition);
        }
        .main-nav li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--copper);
            transition: width 0.3s ease;
        }
        .main-nav li a:hover {
            color: var(--ink);
        }
        .main-nav li a:hover::after {
            width: 100%;
        }
        .main-nav li a.active {
            color: var(--ink);
            font-weight: 600;
        }
        .main-nav li a.active::after {
            width: 100%;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn-login {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--ink);
            padding: 8px 16px;
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            background: transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-login:hover {
            border-color: var(--copper);
            color: var(--copper);
        }
        .btn-register {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background-color: var(--ink);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-register:hover {
            background-color: var(--copper);
            color: #fff;
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--ink);
            padding: 8px;
            cursor: pointer;
            border-radius: 6px;
        }
        .navbar-toggler-custom:hover {
            color: var(--copper);
        }
        .mobile-menu {
            display: none;
            background-color: #fff;
            border-top: 1px solid var(--line);
            padding: 12px 24px 20px;
            flex-direction: column;
            gap: 6px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 1rem;
            padding: 10px 0;
            border-bottom: 1px solid var(--line);
            font-weight: 500;
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu a.active {
            color: var(--copper);
            font-weight: 600;
        }

        /* ============ HERO ============ */
        .hero-section {
            position: relative;
            background-image: url('/assets/images/7f15166c42a9b525.webp');
            background-size: cover;
            background-position: center;
            padding: 110px 0 90px;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 29, 35, 0.88) 0%, rgba(26, 29, 35, 0.55) 55%, rgba(26, 29, 35, 0.35) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            color: #fff;
        }
        .hero-kicker {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--copper);
            text-transform: uppercase;
            margin-bottom: 16px;
            border: 1px solid rgba(184, 150, 90, 0.5);
            padding: 5px 16px;
            border-radius: 50px;
            background: rgba(26, 29, 35, 0.45);
        }
        .hero-content h1 {
            color: #fff;
            font-size: 3rem;
            font-weight: 900;
            margin-bottom: 20px;
            letter-spacing: 0.01em;
            line-height: 1.3;
        }
        .hero-subtitle {
            font-size: 1.1rem;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.88);
            max-width: 600px;
            margin-bottom: 28px;
        }
        .hero-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
            margin-bottom: 32px;
        }
        .hero-metric {
            text-align: left;
        }
        .hero-metric .metric-number {
            font-family: var(--font-sans);
            font-size: 2.1rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .hero-metric .metric-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 2px;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-primary-custom {
            background-color: var(--copper);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.02em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover {
            background-color: var(--copper-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(184, 150, 90, 0.3);
        }
        .btn-outline-custom {
            background: transparent;
            color: #fff;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 13px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.4);
            transition: all var(--transition);
            letter-spacing: 0.02em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover {
            border-color: var(--copper);
            color: var(--copper);
            background: rgba(184, 150, 90, 0.08);
        }
        .hero-visual {
            position: relative;
            z-index: 2;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            min-height: 260px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            text-align: center;
        }
        .hero-visual img {
            border-radius: var(--radius-sm);
            opacity: 0.9;
        }

        /* ============ SECTIONS ============ */
        .section-block {
            padding: var(--spacing-section) 0;
        }
        .section-block.bg-white {
            background-color: #fff;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .section-block.bg-warm {
            background-color: var(--warm-bg);
        }
        .section-block.bg-dark {
            background-color: var(--ink);
            color: #fff;
        }
        .section-block.bg-dark h2,
        .section-block.bg-dark h3,
        .section-block.bg-dark p {
            color: #fff;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--copper);
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 1.9rem;
            margin-bottom: 18px;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--muted);
            max-width: 760px;
            margin-bottom: 2rem;
            line-height: 1.9;
        }

        /* ============ CARDS ============ */
        .custom-card {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .custom-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 0;
            background-color: var(--copper);
            transition: height 0.35s ease;
        }
        .custom-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--copper);
        }
        .custom-card:hover::before {
            height: 100%;
        }
        .card-number {
            font-family: var(--font-serif);
            font-size: 2.2rem;
            font-weight: 900;
            color: rgba(184, 150, 90, 0.35);
            margin-bottom: 12px;
            line-height: 1;
        }
        .card-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background-color: rgba(184, 150, 90, 0.12);
            color: var(--copper);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }
        .card-title {
            font-size: 1.05rem;
            font-weight: 600;
            font-family: var(--font-sans);
            margin-bottom: 10px;
            color: var(--ink);
        }
        .card-text {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.8;
            margin-bottom: 0;
        }
        .card-meta {
            font-size: 0.8rem;
            color: var(--muted);
            display: flex;
            gap: 16px;
            margin-top: 12px;
            flex-wrap: wrap;
        }

        /* ============ COMPARISON TABLE ============ */
        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--line);
        }
        .comparison-table thead th {
            background-color: var(--ink);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 18px 20px;
            text-align: left;
            font-family: var(--font-sans);
        }
        .comparison-table thead th.highlight-col {
            background-color: var(--copper);
        }
        .comparison-table tbody td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--line);
            font-size: 0.9rem;
            color: #3a3e46;
            vertical-align: middle;
        }
        .comparison-table tbody tr:last-child td {
            border-bottom: none;
        }
        .comparison-table tbody tr:hover td {
            background-color: #fafaf8;
        }
        .check-icon {
            color: var(--green);
            font-weight: 700;
        }
        .minus-icon {
            color: #b0b0b0;
        }

        /* ============ TIMELINE ============ */
        .timeline {
            position: relative;
            padding-left: 28px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: var(--line);
        }
        .timeline-item {
            position: relative;
            padding-bottom: 32px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 8px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--copper);
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px var(--copper);
        }
        .timeline-year {
            font-family: var(--font-sans);
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--copper);
            letter-spacing: 0.06em;
            margin-bottom: 4px;
        }
        .timeline-title {
            font-weight: 600;
            font-size: 1rem;
            font-family: var(--font-sans);
            margin-bottom: 6px;
        }
        .timeline-text {
            font-size: 0.88rem;
            color: var(--muted);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ============ NEWS & PLAY CARDS ============ */
        .news-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--copper);
        }
        .news-card .news-img {
            height: 190px;
            overflow: hidden;
            position: relative;
        }
        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-img img {
            transform: scale(1.04);
        }
        .news-card .news-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--copper);
            background: rgba(184, 150, 90, 0.1);
            padding: 3px 10px;
            border-radius: 50px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .news-title {
            font-size: 0.98rem;
            font-weight: 600;
            font-family: var(--font-sans);
            color: var(--ink);
            margin-bottom: 8px;
            line-height: 1.55;
        }
        .news-summary {
            font-size: 0.85rem;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
        }
        .news-date {
            font-size: 0.78rem;
            color: #9a9ea6;
        }

        /* ============ FAQ ============ */
        .faq-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: #d5d2cb;
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            font-size: 0.98rem;
            font-weight: 600;
            font-family: var(--font-sans);
            color: var(--ink);
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--copper);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 1rem;
            transition: transform 0.3s ease;
            color: var(--copper);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 24px;
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ============ FORM ============ */
        .custom-form .form-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 6px;
            font-family: var(--font-sans);
        }
        .custom-form .form-control {
            background: transparent;
            border: none;
            border-bottom: 1.5px solid var(--line);
            border-radius: 0;
            padding: 10px 2px;
            font-size: 0.95rem;
            color: var(--ink);
            font-family: var(--font-sans);
            transition: border-color var(--transition);
            box-shadow: none !important;
        }
        .custom-form .form-control:focus {
            border-bottom-color: var(--copper);
            background: transparent;
        }
        .custom-form .form-control::placeholder {
            color: #b0b0b0;
            font-size: 0.88rem;
        }
        .form-privacy {
            font-size: 0.78rem;
            color: #9a9ea6;
            margin-top: 14px;
            line-height: 1.7;
        }

        /* ============ TESTIMONIAL ============ */
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 26px;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--copper);
        }
        .stars {
            color: var(--copper);
            font-size: 0.9rem;
            letter-spacing: 2px;
            margin-bottom: 12px;
        }
        .testimonial-text {
            font-size: 0.9rem;
            color: #3a3e46;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background-color: var(--ink);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .testimonial-name {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--ink);
        }
        .testimonial-meta {
            font-size: 0.78rem;
            color: var(--muted);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background-color: var(--ink);
            color: rgba(255, 255, 255, 0.75);
            padding: 50px 0 30px;
            font-size: 0.9rem;
        }
        .site-footer .footer-brand {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer p {
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 6px;
            font-size: 0.85rem;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .site-footer a:hover {
            color: var(--copper);
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            margin: 24px 0 18px;
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            justify-content: space-between;
            align-items: center;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li a {
            font-size: 0.83rem;
        }

        /* ============ BANNER CTA ============ */
        .cta-banner {
            background: linear-gradient(135deg, var(--ink) 0%, #2a2e36 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(184, 150, 90, 0.12);
            pointer-events: none;
        }
        .cta-banner h2 {
            color: #fff;
            font-size: 1.7rem;
            margin-bottom: 14px;
        }
        .cta-banner p {
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 24px;
            font-size: 0.95rem;
        }

        /* ============ SERVICE MATRIX ============ */
        .service-matrix .matrix-card {
            position: relative;
            padding: 24px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            transition: all var(--transition);
            height: 100%;
            min-height: 200px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .service-matrix .matrix-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--copper);
        }
        .matrix-index {
            font-family: var(--font-serif);
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--copper);
            letter-spacing: 0.1em;
            margin-bottom: 10px;
        }
        .matrix-card h3 {
            font-size: 1.05rem;
            font-family: var(--font-sans);
            font-weight: 600;
            margin-bottom: 8px;
        }
        .matrix-card p {
            font-size: 0.88rem;
            color: var(--muted);
            margin-bottom: 0;
            line-height: 1.75;
        }
        .matrix-stat {
            font-family: var(--font-sans);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--ink);
            margin-top: 12px;
        }

        /* ============ GUARANTEE ============ */
        .guarantee-card {
            text-align: center;
            padding: 32px 24px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            height: 100%;
            transition: all var(--transition);
        }
        .guarantee-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--copper);
        }
        .guarantee-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(184, 150, 90, 0.1);
            color: var(--copper);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin: 0 auto 16px;
        }
        .guarantee-card h3 {
            font-size: 1rem;
            font-family: var(--font-sans);
            font-weight: 600;
            margin-bottom: 8px;
        }
        .guarantee-card p {
            font-size: 0.85rem;
            color: var(--muted);
            margin-bottom: 0;
            line-height: 1.75;
        }

        /* ============ PLAY SCENARIO ============ */
        .play-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            cursor: default;
        }
        .play-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--copper);
        }
        .play-card .play-img {
            height: 160px;
            overflow: hidden;
        }
        .play-card .play-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .play-card:hover .play-img img {
            transform: scale(1.05);
        }
        .play-card .play-body {
            padding: 18px 20px;
        }
        .play-card .play-body h3 {
            font-size: 0.98rem;
            font-family: var(--font-sans);
            font-weight: 600;
            margin-bottom: 6px;
        }
        .play-card .play-body p {
            font-size: 0.84rem;
            color: var(--muted);
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .play-tag {
            display: inline-block;
            font-size: 0.72rem;
            color: var(--green);
            background: rgba(62, 124, 91, 0.08);
            padding: 2px 10px;
            border-radius: 50px;
            font-weight: 600;
        }

        /* ============ QUICK ANSWER ============ */
        .quick-answer-item {
            display: flex;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid var(--line);
        }
        .quick-answer-item:last-child {
            border-bottom: none;
        }
        .qa-badge {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--copper);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 4px;
        }
        .qa-content h4 {
            font-size: 0.95rem;
            font-weight: 600;
            font-family: var(--font-sans);
            margin-bottom: 4px;
        }
        .qa-content p {
            font-size: 0.85rem;
            color: var(--muted);
            margin-bottom: 0;
            line-height: 1.75;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 70px;
            }
            h1 {
                font-size: 2.2rem;
            }
            .hero-content h1 {
                font-size: 2.3rem;
            }
            .hero-metric .metric-number {
                font-size: 1.7rem;
            }
            .hero-metrics {
                gap: 24px;
            }
            .main-nav {
                gap: 18px;
            }
            .main-nav li a {
                font-size: 0.88rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
            }
            .header-actions {
                display: none;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .hero-section {
                padding: 60px 0 50px;
            }
            .hero-content h1 {
                font-size: 1.8rem;
                line-height: 1.4;
            }
            .hero-subtitle {
                font-size: 0.95rem;
                line-height: 1.75;
            }
            .hero-metrics {
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .hero-metric .metric-number {
                font-size: 1.5rem;
            }
            .hero-visual {
                min-height: 180px;
                margin-top: 24px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.45rem;
            }
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 12px 14px;
                font-size: 0.8rem;
            }
            .timeline {
                padding-left: 22px;
            }
            .timeline-item::before {
                left: -19px;
                width: 8px;
                height: 8px;
            }
            .cta-banner {
                padding: 32px 24px;
            }
            .cta-banner h2 {
                font-size: 1.3rem;
            }
            .footer-divider {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .custom-card {
                padding: 20px;
            }
            .news-card .news-img {
                height: 150px;
            }
            .play-card .play-img {
                height: 130px;
            }
            .hero-cta-group .btn-primary-custom,
            .hero-cta-group .btn-outline-custom {
                padding: 11px 18px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.55rem;
            }
            .hero-metric .metric-number {
                font-size: 1.3rem;
            }
            .hero-metric .metric-label {
                font-size: 0.75rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-logo {
                font-size: 1.15rem;
            }
            .brand-logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .custom-card {
                padding: 18px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.88rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.84rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
            .comparison-table {
                font-size: 0.75rem;
            }
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 8px 10px;
                font-size: 0.75rem;
            }
        }

        /* ============ SCROLL REVEAL ============ */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category2 */
:root {
            --ink: #1A1D23;
            --copper: #B8965A;
            --copper-hover: #a6844b;
            --warm-bg: #F7F7F5;
            --card-bg: #FFFFFF;
            --line: #E8E6E1;
            --muted: #5C6068;
            --green: #3E7C5B;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(26, 29, 35, 0.04);
            --shadow-hover: 0 8px 24px rgba(26, 29, 35, 0.08);
            --spacing-section: 90px;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', '思源宋体', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', '思源黑体', 'Microsoft YaHei', sans-serif;
            --transition: 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--warm-bg);
            color: var(--ink);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--copper);
        }
        a:focus-visible {
            outline: 2px solid var(--copper);
            outline-offset: 3px;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        .text-muted-custom {
            color: var(--muted);
        }
        .section-pad {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }
        .section-subtitle {
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--copper);
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-title {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 2rem;
            color: var(--ink);
            margin-bottom: 16px;
            line-height: 1.35;
        }
        .section-desc {
            color: var(--muted);
            font-size: 1rem;
            max-width: 720px;
        }
        /* ============ HEADER ============ */
        .site-header {
            background-color: rgba(247, 247, 245, 0.98);
            border-bottom: 1px solid var(--line);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(26, 29, 35, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: nowrap;
        }
        .brand-logo {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.4rem;
            color: var(--ink);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color var(--transition);
        }
        .brand-logo:hover {
            color: var(--copper);
        }
        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background-color: var(--ink);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .main-nav li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: #3a3e46;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: color var(--transition);
        }
        .main-nav li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--copper);
            transition: width 0.3s ease;
        }
        .main-nav li a:hover {
            color: var(--ink);
        }
        .main-nav li a:hover::after {
            width: 100%;
        }
        .main-nav li a.active {
            color: var(--ink);
            font-weight: 600;
        }
        .main-nav li a.active::after {
            width: 100%;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn-login {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--ink);
            padding: 8px 16px;
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            background: transparent;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-login:hover {
            border-color: var(--copper);
            color: var(--copper);
        }
        .btn-register {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background-color: var(--ink);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-register:hover {
            background-color: var(--copper);
            color: #fff;
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--ink);
            padding: 8px;
            cursor: pointer;
            border-radius: 6px;
        }
        .navbar-toggler-custom:hover {
            color: var(--copper);
        }
        .mobile-menu {
            display: none;
            background-color: #fff;
            border-top: 1px solid var(--line);
            padding: 12px 24px 20px;
            flex-direction: column;
            gap: 6px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 1rem;
            padding: 10px 0;
            border-bottom: 1px solid var(--line);
            font-weight: 500;
        }
        .mobile-menu a.active {
            color: var(--copper);
            font-weight: 600;
        }
        /* ============ PAGE HERO (分类页首屏) ============ */
        .page-hero {
            padding: 80px 0 60px;
            background: linear-gradient(180deg, #F2F1ED 0%, var(--warm-bg) 100%);
            border-bottom: 1px solid var(--line);
            position: relative;
            overflow: hidden;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero-badge {
            display: inline-block;
            background-color: var(--card-bg);
            border: 1px solid var(--line);
            color: var(--copper);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.06em;
            margin-bottom: 16px;
        }
        .page-hero h1 {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 2.6rem;
            line-height: 1.3;
            color: var(--ink);
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }
        .page-hero .hero-desc {
            font-size: 1.05rem;
            color: var(--muted);
            max-width: 780px;
            line-height: 1.9;
        }
        .page-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 20px;
            font-size: 0.9rem;
            color: var(--muted);
        }
        .page-hero .hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .page-hero .hero-meta i {
            color: var(--copper);
            font-size: 0.85rem;
        }
        /* ============ CARDS GRID ============ */
        .strategy-card {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .strategy-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--copper);
            transform: translateY(-3px);
        }
        .strategy-card .card-img-wrap {
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: #EDEBE6;
            position: relative;
        }
        .strategy-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .strategy-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .strategy-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background-color: rgba(26, 29, 35, 0.85);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.04em;
        }
        .strategy-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .strategy-card .card-body h3 {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--ink);
            margin-bottom: 10px;
            line-height: 1.45;
        }
        .strategy-card .card-body p {
            color: var(--muted);
            font-size: 0.92rem;
            margin-bottom: 14px;
            flex: 1;
            line-height: 1.8;
        }
        .strategy-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--muted);
            border-top: 1px solid var(--line);
            padding-top: 12px;
        }
        .strategy-card .card-meta .read-link {
            font-weight: 600;
            color: var(--copper);
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition);
        }
        .strategy-card .card-meta .read-link:hover {
            color: var(--copper-hover);
        }
        /* ============ DATA STRIP ============ */
        .data-strip {
            background-color: var(--ink);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            color: #fff;
        }
        .data-strip .data-item {
            text-align: center;
            padding: 12px 8px;
        }
        .data-strip .data-num {
            font-family: var(--font-sans);
            font-weight: 700;
            font-size: 2.2rem;
            color: var(--copper);
            letter-spacing: -0.01em;
            line-height: 1.2;
        }
        .data-strip .data-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
            letter-spacing: 0.04em;
        }
        /* ============ EXTRA READING ============ */
        .reading-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            transition: all var(--transition);
        }
        .reading-item:hover {
            border-color: var(--copper);
            box-shadow: var(--shadow-sm);
        }
        .reading-item .reading-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background-color: #F2F1ED;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--copper);
            font-size: 1rem;
            flex-shrink: 0;
        }
        .reading-item .reading-info {
            flex: 1;
        }
        .reading-item .reading-info h4 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 3px;
        }
        .reading-item .reading-info p {
            font-size: 0.82rem;
            color: var(--muted);
            margin: 0;
        }
        .reading-item .reading-date {
            font-size: 0.8rem;
            color: var(--muted);
            white-space: nowrap;
        }
        /* ============ CTA BAND ============ */
        .cta-band {
            background-color: var(--ink);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .cta-band::after {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            border: 1px solid rgba(184, 150, 90, 0.2);
            pointer-events: none;
        }
        .cta-band .cta-text h3 {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.6rem;
            margin-bottom: 8px;
            color: #fff;
        }
        .cta-band .cta-text p {
            color: rgba(255, 255, 255, 0.7);
            margin: 0;
            font-size: 0.95rem;
        }
        .btn-copper {
            background-color: var(--copper);
            color: #fff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            font-size: 0.95rem;
        }
        .btn-copper:hover {
            background-color: var(--copper-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-outline-copper {
            background: transparent;
            color: #fff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.35);
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            font-size: 0.95rem;
        }
        .btn-outline-copper:hover {
            border-color: var(--copper);
            color: var(--copper);
        }
        /* ============ SAFETY / ASSURANCE ============ */
        .assurance-card {
            text-align: center;
            padding: 28px 20px;
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            transition: all var(--transition);
            height: 100%;
        }
        .assurance-card:hover {
            border-color: var(--copper);
            box-shadow: var(--shadow-sm);
        }
        .assurance-card .assurance-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background-color: #F2F1ED;
            color: var(--copper);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin: 0 auto 14px;
        }
        .assurance-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .assurance-card p {
            font-size: 0.85rem;
            color: var(--muted);
            margin: 0;
        }
        /* ============ FAQ ============ */
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: #D5D2CB;
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--ink);
            text-align: left;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--copper);
        }
        .faq-question .faq-toggle {
            font-size: 0.85rem;
            color: var(--muted);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-toggle {
            transform: rotate(45deg);
            color: var(--copper);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 22px;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            color: var(--muted);
            font-size: 0.92rem;
            margin: 0;
            line-height: 1.85;
        }
        /* ============ TIPS LIST ============ */
        .tip-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .tip-list li {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 14px 0;
            border-bottom: 1px solid var(--line);
            font-size: 0.95rem;
            color: var(--ink);
        }
        .tip-list li:last-child {
            border-bottom: none;
        }
        .tip-list .tip-num {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background-color: #F2F1ED;
            color: var(--copper);
            font-weight: 700;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 2px;
        }
        /* ============ FOOTER ============ */
        .site-footer {
            background-color: var(--ink);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 30px;
            margin-top: 0;
            font-size: 0.9rem;
        }
        .footer-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            gap: 20px;
        }
        .footer-links li a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .footer-links li a:hover {
            color: var(--copper);
        }
        .footer-divider {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 18px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
            margin-top: 36px;
        }
        .footer-divider p {
            margin-bottom: 4px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.55);
        }
        /* ============ BUTTONS ============ */
        .btn-primary-custom {
            background-color: var(--ink);
            color: #fff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            font-size: 0.95rem;
        }
        .btn-primary-custom:hover {
            background-color: var(--copper);
            color: #fff;
        }
        .btn-secondary-custom {
            background: transparent;
            color: var(--ink);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--line);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            font-size: 0.95rem;
        }
        .btn-secondary-custom:hover {
            border-color: var(--copper);
            color: var(--copper);
        }
        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 70px;
            }
            .main-nav {
                gap: 18px;
            }
            .main-nav li a {
                font-size: 0.88rem;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .data-strip .data-num {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
            }
            .main-nav {
                display: none;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .header-actions .btn-login {
                display: none;
            }
            .page-hero {
                padding: 50px 0 36px;
            }
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .page-hero .hero-desc {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .data-strip {
                padding: 28px 18px;
            }
            .data-strip .data-num {
                font-size: 1.5rem;
            }
            .data-strip .data-label {
                font-size: 0.75rem;
            }
            .cta-band {
                padding: 32px 24px;
                flex-direction: column;
                text-align: center;
            }
            .cta-band .cta-text h3 {
                font-size: 1.3rem;
            }
            .reading-item {
                flex-wrap: wrap;
                padding: 14px 16px;
            }
            .reading-item .reading-date {
                width: 100%;
                text-align: right;
            }
            .footer-divider {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
                flex-wrap: wrap;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-logo {
                font-size: 1.2rem;
            }
            .brand-logo .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }
            .btn-register {
                padding: 6px 14px;
                font-size: 0.82rem;
            }
            .page-hero h1 {
                font-size: 1.4rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .strategy-card .card-body h3 {
                font-size: 1rem;
            }
        }

/* roulang page: category3 */
:root {
            --ink: #1A1D23;
            --copper: #B8965A;
            --copper-hover: #a6844b;
            --warm-bg: #F7F7F5;
            --card-bg: #FFFFFF;
            --line: #E8E6E1;
            --muted: #5C6068;
            --green: #3E7C5B;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(26, 29, 35, 0.04);
            --shadow-hover: 0 8px 24px rgba(26, 29, 35, 0.08);
            --spacing-section: 72px;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', '思源宋体', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', '思源黑体', 'Microsoft YaHei', sans-serif;
            --transition: 0.25s ease;
        }

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

        body {
            font-family: var(--font-sans);
            background-color: var(--warm-bg);
            color: var(--ink);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--copper);
        }
        a:focus-visible {
            outline: 2px solid var(--copper);
            outline-offset: 3px;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ============ HEADER ============ */
        .site-header {
            background-color: rgba(247, 247, 245, 0.98);
            border-bottom: 1px solid var(--line);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(26, 29, 35, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: nowrap;
        }
        .brand-logo {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.35rem;
            color: var(--ink);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color var(--transition);
        }
        .brand-logo:hover {
            color: var(--copper);
        }
        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background-color: var(--ink);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.05rem;
            font-weight: 700;
            flex-shrink: 0;
            font-family: var(--font-sans);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 26px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .main-nav li a {
            font-size: 0.93rem;
            font-weight: 500;
            color: #3a3e46;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: color var(--transition);
        }
        .main-nav li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--copper);
            transition: width 0.3s ease;
        }
        .main-nav li a:hover {
            color: var(--ink);
        }
        .main-nav li a:hover::after {
            width: 100%;
        }
        .main-nav li a.active {
            color: var(--ink);
            font-weight: 600;
        }
        .main-nav li a.active::after {
            width: 100%;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn-login {
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--ink);
            padding: 8px 16px;
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            background: transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-login:hover {
            border-color: var(--copper);
            color: var(--copper);
        }
        .btn-register {
            font-size: 0.88rem;
            font-weight: 600;
            color: #fff;
            background-color: var(--ink);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-register:hover {
            background-color: var(--copper);
            color: #fff;
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--ink);
            padding: 8px;
            cursor: pointer;
            border-radius: 6px;
        }
        .navbar-toggler-custom:hover {
            color: var(--copper);
        }
        .mobile-menu {
            display: none;
            background-color: #fff;
            border-top: 1px solid var(--line);
            padding: 12px 24px 20px;
            flex-direction: column;
            gap: 6px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 1rem;
            padding: 10px 0;
            border-bottom: 1px solid var(--line);
            font-weight: 500;
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu a.active {
            color: var(--copper);
            font-weight: 600;
        }

        /* ============ HERO ============ */
        .page-hero {
            padding: 70px 0 50px;
            background: linear-gradient(135deg, #fafafa 0%, #f0efe9 100%);
            border-bottom: 1px solid var(--line);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background-color: rgba(184, 150, 90, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero-content {
            position: relative;
            z-index: 1;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--muted);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }
        .breadcrumb-custom a {
            color: var(--muted);
            transition: color var(--transition);
        }
        .breadcrumb-custom a:hover {
            color: var(--copper);
        }
        .breadcrumb-custom .separator {
            color: #c0bdb5;
        }
        .breadcrumb-custom .current {
            color: var(--ink);
            font-weight: 500;
        }
        .page-hero h1 {
            font-family: var(--font-serif);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }
        .page-hero .hero-sub {
            font-size: 1.05rem;
            color: var(--muted);
            max-width: 760px;
            line-height: 1.9;
        }

        /* ============ SECTION GENERAL ============ */
        .page-section {
            padding: var(--spacing-section) 0;
        }
        .section-heading-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }
        .section-heading-row .section-title {
            font-family: var(--font-serif);
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--ink);
            margin: 0;
            line-height: 1.4;
        }
        .section-heading-row .section-sub {
            font-size: 0.95rem;
            color: var(--muted);
            max-width: 460px;
            margin: 0;
        }

        /* ============ EVENT CARDS ============ */
        .event-card {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
        }
        .event-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--copper);
        }
        .event-card .event-img {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: #eae9e4;
        }
        .event-card .event-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .event-card:hover .event-img img {
            transform: scale(1.03);
        }
        .event-card .event-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background-color: var(--ink);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.03em;
        }
        .event-card .event-badge.upcoming {
            background-color: var(--copper);
        }
        .event-card .event-badge.ongoing {
            background-color: var(--green);
        }
        .event-card .event-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .event-card .event-tag {
            display: inline-block;
            font-size: 0.78rem;
            color: var(--copper);
            font-weight: 600;
            margin-bottom: 8px;
            letter-spacing: 0.04em;
        }
        .event-card .event-title {
            font-family: var(--font-serif);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .event-card .event-desc {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }
        .event-card .event-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--muted);
            border-top: 1px solid var(--line);
            padding-top: 14px;
            flex-wrap: wrap;
        }
        .event-card .event-meta i {
            color: var(--copper);
            margin-right: 4px;
            font-size: 0.8rem;
        }

        /* ============ DATA STRIP ============ */
        .data-strip {
            background-color: var(--ink);
            padding: 44px 0;
            border-radius: var(--radius-lg);
            position: relative;
            overflow: hidden;
        }
        .data-strip::after {
            content: '';
            position: absolute;
            top: -60%;
            right: -5%;
            width: 300px;
            height: 300px;
            background-color: rgba(184, 150, 90, 0.1);
            border-radius: 50%;
            pointer-events: none;
        }
        .data-strip .data-item {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 10px 0;
        }
        .data-strip .data-number {
            font-family: var(--font-sans);
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            letter-spacing: 0.01em;
            font-feature-settings: 'tnum';
        }
        .data-strip .data-number .unit {
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--copper);
            margin-left: 2px;
        }
        .data-strip .data-label {
            font-size: 0.85rem;
            color: #b8b8b2;
            margin-top: 6px;
        }

        /* ============ RELATED LIST ============ */
        .related-list {
            list-style: none;
            padding: 0;
            margin: 0;
            border-top: 1px solid var(--line);
        }
        .related-list li {
            border-bottom: 1px solid var(--line);
            padding: 16px 4px;
            display: flex;
            align-items: center;
            gap: 16px;
            transition: all var(--transition);
        }
        .related-list li:hover {
            padding-left: 12px;
        }
        .related-list li:hover a {
            color: var(--copper);
        }
        .related-list .related-icon {
            width: 36px;
            height: 36px;
            background-color: #f0efe9;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--copper);
            flex-shrink: 0;
        }
        .related-list .related-text {
            flex: 1;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--ink);
        }
        .related-list .related-date {
            font-size: 0.8rem;
            color: var(--muted);
            white-space: nowrap;
        }

        /* ============ CTA BANNER ============ */
        .cta-banner {
            background: linear-gradient(135deg, #fafafa 0%, #f5f3ed 100%);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }
        .cta-banner .cta-text h3 {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cta-banner .cta-text p {
            font-size: 0.95rem;
            color: var(--muted);
            margin: 0;
        }
        .btn-primary-custom {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            background-color: var(--ink);
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover {
            background-color: var(--copper);
            color: #fff;
        }
        .btn-secondary-custom {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--ink);
            background: transparent;
            padding: 11px 26px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--ink);
            transition: all var(--transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary-custom:hover {
            border-color: var(--copper);
            color: var(--copper);
        }

        /* ============ SECURITY/SAFETY ============ */
        .safety-card {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition);
            height: 100%;
            text-align: left;
        }
        .safety-card:hover {
            border-color: var(--copper);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .safety-card .safety-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background-color: #f0efe9;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--copper);
            margin-bottom: 14px;
        }
        .safety-card h4 {
            font-family: var(--font-serif);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--ink);
        }
        .safety-card p {
            font-size: 0.9rem;
            color: var(--muted);
            margin: 0;
            line-height: 1.75;
        }

        /* ============ FAQ ============ */
        .faq-item {
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: var(--card-bg);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: #d5d2cb;
        }
        .faq-item.active {
            border-color: var(--copper);
        }
        .faq-question {
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-family: var(--font-serif);
            font-size: 1rem;
            font-weight: 600;
            color: var(--ink);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--copper);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--line);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all 0.3s ease;
            color: var(--muted);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            border-color: var(--copper);
            color: var(--copper);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.92rem;
            color: var(--muted);
            line-height: 1.85;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
        }

        /* ============ PLAY TIPS ============ */
        .tip-card {
            background: #faf9f7;
            border-left: 3px solid var(--copper);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            padding: 20px 22px;
            margin-bottom: 14px;
        }
        .tip-card h4 {
            font-family: var(--font-serif);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--ink);
        }
        .tip-card p {
            font-size: 0.9rem;
            color: var(--muted);
            margin: 0;
            line-height: 1.75;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background-color: var(--ink);
            color: #b8b8b2;
            padding: 56px 0 32px;
            margin-top: 0;
        }
        .site-footer .footer-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.3rem;
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer p {
            font-size: 0.88rem;
            line-height: 1.8;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-links a {
            font-size: 0.88rem;
            color: #b8b8b2;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--copper);
        }
        .footer-divider {
            border-top: 1px solid #2e3238;
            margin-top: 36px;
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .footer-divider p {
            font-size: 0.8rem;
            color: #8a8a86;
            margin-bottom: 0;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 60px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .main-nav {
                gap: 18px;
            }
            .main-nav li a {
                font-size: 0.85rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
            }
            .main-nav {
                display: none;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .header-actions .btn-login {
                display: none;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero {
                padding: 50px 0 36px;
            }
            .section-heading-row .section-title {
                font-size: 1.35rem;
            }
            .data-strip .data-number {
                font-size: 1.5rem;
            }
            .cta-banner {
                padding: 32px 24px;
                flex-direction: column;
                text-align: center;
            }
            .event-card .event-body {
                padding: 18px 18px 20px;
            }
            .footer-divider {
                flex-direction: column;
                text-align: center;
                gap: 16px;
            }
            .footer-links {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.35rem;
            }
            .page-hero .hero-sub {
                font-size: 0.92rem;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .data-strip {
                padding: 32px 0;
            }
            .data-strip .data-number {
                font-size: 1.3rem;
            }
            .data-strip .data-label {
                font-size: 0.75rem;
            }
            .btn-primary-custom,
            .btn-secondary-custom {
                font-size: 0.85rem;
                padding: 10px 20px;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer-inner {
                padding: 0 16px 16px;
                font-size: 0.86rem;
            }
        }

/* roulang page: category1 */
:root {
            --ink: #1A1D23;
            --copper: #B8965A;
            --copper-hover: #a6844b;
            --warm-bg: #F7F7F5;
            --card-bg: #FFFFFF;
            --line: #E8E6E1;
            --muted: #5C6068;
            --green: #3E7C5B;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(26, 29, 35, 0.04);
            --shadow-hover: 0 8px 24px rgba(26, 29, 35, 0.08);
            --spacing-section: 100px;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', '思源宋体', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', '思源黑体', 'Microsoft YaHei', sans-serif;
            --transition: 0.25s ease;
        }

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

        body {
            font-family: var(--font-sans);
            background-color: var(--warm-bg);
            color: var(--ink);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        a:focus-visible {
            outline: 2px solid var(--copper);
            outline-offset: 3px;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ============ HEADER ============ */
        .site-header {
            background-color: rgba(247, 247, 245, 0.98);
            border-bottom: 1px solid var(--line);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(26, 29, 35, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: nowrap;
        }

        .brand-logo {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.4rem;
            color: var(--ink);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color var(--transition);
        }

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

        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background-color: var(--ink);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: #3a3e46;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: color var(--transition);
        }

        .main-nav li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--copper);
            transition: width 0.3s ease;
        }

        .main-nav li a:hover {
            color: var(--ink);
        }

        .main-nav li a:hover::after {
            width: 100%;
        }

        .main-nav li a.active {
            color: var(--ink);
            font-weight: 600;
        }

        .main-nav li a.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-login {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--ink);
            padding: 8px 16px;
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            background: transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--copper);
            color: var(--copper);
        }

        .btn-register {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background-color: var(--ink);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-register:hover {
            background-color: var(--copper);
            color: #fff;
        }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--ink);
            padding: 8px;
            cursor: pointer;
            border-radius: 6px;
        }

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

        .mobile-menu {
            display: none;
            background-color: #fff;
            border-top: 1px solid var(--line);
            padding: 12px 24px 20px;
            flex-direction: column;
            gap: 6px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            font-size: 1rem;
            padding: 10px 0;
            border-bottom: 1px solid var(--line);
            font-weight: 500;
        }

        /* ============ BUTTONS ============ */
        .btn-primary-custom {
            display: inline-block;
            background-color: var(--ink);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            border: none;
            transition: all var(--transition);
        }

        .btn-primary-custom:hover {
            background-color: var(--copper);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(184, 150, 90, 0.25);
        }

        .btn-outline-custom {
            display: inline-block;
            background: transparent;
            color: var(--ink);
            padding: 11px 26px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            border: 1px solid var(--line);
            transition: all var(--transition);
        }

        .btn-outline-custom:hover {
            border-color: var(--copper);
            color: var(--copper);
            box-shadow: 0 4px 12px rgba(26,29,35,0.05);
        }

        /* ============ SECTIONS ============ */
        .section-block {
            padding: var(--spacing-section) 0;
        }

        .section-heading {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 2rem;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
            color: var(--ink);
        }

        .section-sub {
            color: var(--muted);
            font-size: 1rem;
            margin-bottom: 40px;
            max-width: 700px;
        }

        .card-custom {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--copper);
        }

        .card-img-top {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background-color: #e9e7e2;
        }

        .card-body-custom {
            padding: 20px 22px 24px;
        }

        .badge-custom {
            background-color: #f0ebe2;
            color: var(--copper);
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            display: inline-block;
        }

        .data-highlight {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--ink);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .data-label {
            color: var(--muted);
            font-size: 0.9rem;
        }

        .divider-line {
            height: 1px;
            background-color: var(--line);
            margin: 0;
        }

        .icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: #f5f1ea;
            color: var(--copper);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }

        .accordion-custom .accordion-item {
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            background: #fff;
        }

        .accordion-custom .accordion-button {
            background: #fff;
            color: var(--ink);
            font-weight: 600;
            font-size: 1rem;
            padding: 16px 20px;
            border-radius: var(--radius-md);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: #fff;
            color: var(--ink);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: var(--copper);
        }

        .accordion-custom .accordion-button:not(.collapsed)::after {
            color: var(--copper);
        }

        .accordion-custom .accordion-body {
            color: var(--muted);
            padding: 16px 20px 20px;
        }

        /* ============ CATEGORY HERO ============ */
        .category-hero {
            background: var(--warm-bg);
            padding: 80px 0 60px;
            border-bottom: 1px solid var(--line);
        }

        .category-hero h1 {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 2.8rem;
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }

        .category-hero .lead {
            color: var(--muted);
            font-size: 1.1rem;
            max-width: 760px;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--ink);
            color: #b7b9bd;
            padding: 50px 0 30px;
            margin-top: 0;
        }

        .site-footer .footer-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 12px;
        }

        .site-footer p {
            margin-bottom: 8px;
            font-size: 0.9rem;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: #b7b9bd;
            transition: color var(--transition);
        }

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

        .footer-divider {
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top: 30px;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-divider p {
            margin-bottom: 4px;
            font-size: 0.8rem;
            color: #888b90;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 18px;
            }
            .category-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .navbar-toggler-custom {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .header-actions .btn-login {
                display: none;
            }
            .section-heading {
                font-size: 1.6rem;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero {
                padding: 50px 0 40px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .card-img-top {
                height: 140px;
            }
            .data-highlight {
                font-size: 1.8rem;
            }
            .footer-divider {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            :root {
                --spacing-section: 48px;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .btn-primary-custom, .btn-outline-custom {
                width: 100%;
                text-align: center;
                margin-bottom: 8px;
            }
        }

/* roulang page: category4 */
:root {
            --ink: #1A1D23;
            --copper: #B8965A;
            --copper-hover: #a6844b;
            --warm-bg: #F7F7F5;
            --card-bg: #FFFFFF;
            --line: #E8E6E1;
            --muted: #5C6068;
            --green: #3E7C5B;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(26, 29, 35, 0.04);
            --shadow-hover: 0 8px 24px rgba(26, 29, 35, 0.08);
            --spacing-section: 100px;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', '思源宋体', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', '思源黑体', 'Microsoft YaHei', sans-serif;
            --transition: 0.25s ease;
        }

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

        body {
            font-family: var(--font-sans);
            background-color: var(--warm-bg);
            color: var(--ink);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        a:focus-visible {
            outline: 2px solid var(--copper);
            outline-offset: 3px;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ============ HEADER ============ */
        .site-header {
            background-color: rgba(247, 247, 245, 0.98);
            border-bottom: 1px solid var(--line);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(26, 29, 35, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: nowrap;
        }

        .brand-logo {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.4rem;
            color: var(--ink);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color var(--transition);
        }

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

        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background-color: var(--ink);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: #3a3e46;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: color var(--transition);
        }

        .main-nav li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--copper);
            transition: width 0.3s ease;
        }

        .main-nav li a:hover {
            color: var(--ink);
        }

        .main-nav li a:hover::after {
            width: 100%;
        }

        .main-nav li a.active {
            color: var(--ink);
            font-weight: 600;
        }

        .main-nav li a.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-login {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--ink);
            padding: 8px 16px;
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            background: transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--copper);
            color: var(--copper);
        }

        .btn-register {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background-color: var(--ink);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-register:hover {
            background-color: var(--copper);
            color: #fff;
        }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--ink);
            padding: 8px;
            cursor: pointer;
            border-radius: 6px;
        }

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

        .mobile-menu {
            display: none;
            background-color: #fff;
            border-top: 1px solid var(--line);
            padding: 12px 24px 20px;
            flex-direction: column;
            gap: 6px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            font-size: 1rem;
            padding: 10px 0;
            border-bottom: 1px solid var(--line);
            font-weight: 500;
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

        /* ============ HERO ============ */
        .community-hero {
            padding: 70px 0 60px;
            background-color: var(--warm-bg);
            border-bottom: 1px solid var(--line);
        }

        .community-hero .hero-title {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 2.6rem;
            line-height: 1.3;
            color: var(--ink);
            margin-bottom: 20px;
        }

        .community-hero .hero-subtitle {
            font-size: 1.1rem;
            color: var(--muted);
            max-width: 780px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        .breadcrumb-community {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb-community a {
            color: var(--muted);
            transition: color var(--transition);
        }

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

        .breadcrumb-community .sep {
            color: #b0b4bb;
        }

        .breadcrumb-community .current {
            color: var(--ink);
            font-weight: 500;
        }

        /* ============ SECTION ============ */
        .community-section {
            padding: 70px 0;
        }

        .community-section.alt-bg {
            background-color: #f0efeb;
        }

        .section-title {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--ink);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--muted);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 32px;
        }

        /* ============ CARDS ============ */
        .community-card {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 24px;
            height: 100%;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

        .community-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--copper);
            transform: translateY(-3px);
        }

        .community-card .card-img {
            width: 100%;
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 16px;
            aspect-ratio: 16/9;
            background-color: #e9e7e2;
            flex-shrink: 0;
        }

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

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

        .community-card .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--copper);
            background-color: rgba(184, 150, 90, 0.08);
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .community-card .card-title {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--ink);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .community-card .card-text {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.8;
            flex-grow: 1;
            margin-bottom: 14px;
        }

        .community-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: #8b9098;
        }

        .community-card .card-meta i {
            font-size: 0.7rem;
            color: var(--copper);
            margin-right: 4px;
        }

        /* ============ FEATURE CARDS ============ */
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            height: 100%;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--copper);
            transform: translateY(-3px);
        }

        .feature-card .feature-number {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 2.8rem;
            color: rgba(184, 150, 90, 0.12);
            position: absolute;
            top: 6px;
            right: 20px;
            line-height: 1;
            user-select: none;
            pointer-events: none;
        }

        .feature-card .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background-color: rgba(184, 150, 90, 0.08);
            color: var(--copper);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 16px;
        }

        .feature-card .feature-title {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--ink);
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .feature-card .feature-text {
            font-size: 0.85rem;
            color: var(--muted);
            line-height: 1.8;
            margin-bottom: 0;
            position: relative;
            z-index: 1;
        }

        /* ============ DATA BAND ============ */
        .data-band {
            background-color: var(--ink);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .data-band::after {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background-color: rgba(184, 150, 90, 0.08);
            pointer-events: none;
        }

        .data-band .data-item {
            text-align: center;
            padding: 12px 8px;
            position: relative;
            z-index: 1;
        }

        .data-band .data-number {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 2rem;
            line-height: 1.2;
            color: var(--copper);
            display: block;
            margin-bottom: 4px;
        }

        .data-band .data-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            letter-spacing: 0.04em;
        }

        /* ============ LIST STYLES ============ */
        .extended-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .extended-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid var(--line);
            transition: all var(--transition);
        }

        .extended-list li:last-child {
            border-bottom: none;
        }

        .extended-list li:hover {
            padding-left: 8px;
        }

        .extended-list .list-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background-color: rgba(184, 150, 90, 0.08);
            color: var(--copper);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 0.85rem;
        }

        .extended-list .list-content h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 4px;
            line-height: 1.5;
        }

        .extended-list .list-content p {
            font-size: 0.9rem;
            color: var(--muted);
            margin-bottom: 0;
            line-height: 1.8;
        }

        /* ============ CTA ============ */
        .community-cta {
            background-color: var(--ink);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .community-cta .cta-content h3 {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.5rem;
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .community-cta .cta-content p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.72);
            margin-bottom: 0;
            line-height: 1.8;
        }

        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            background-color: var(--copper);
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-cta-primary:hover {
            background-color: var(--copper-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(184, 150, 90, 0.3);
        }

        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #fff;
            background: transparent;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-outline-light-custom:hover {
            border-color: var(--copper);
            color: var(--copper);
            background-color: rgba(184, 150, 90, 0.05);
        }

        /* ============ FAQ ============ */
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--copper);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--ink);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--copper);
        }

        .faq-question i {
            flex-shrink: 0;
            font-size: 0.85rem;
            color: var(--copper);
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.9;
            border-top: 1px solid var(--line);
            padding-top: 14px;
        }

        .faq-item.open .faq-answer {
            display: block;
            animation: fadeIn 0.25s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-6px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background-color: var(--ink);
            color: rgba(255, 255, 255, 0.72);
            padding: 56px 0 28px;
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .site-footer .footer-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.3rem;
            color: #fff;
            margin-bottom: 12px;
        }

        .site-footer p {
            margin-bottom: 8px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.72);
            transition: color var(--transition);
            font-size: 0.9rem;
        }

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

        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 32px;
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-divider p {
            margin-bottom: 2px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.55);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 70px;
            }
            .community-hero {
                padding: 50px 0 40px;
            }
            .community-hero .hero-title {
                font-size: 2.2rem;
            }
            .main-nav {
                gap: 20px;
            }
            .community-section {
                padding: 50px 0;
            }
            .community-cta {
                padding: 36px 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .main-nav {
                display: none;
            }
            .header-actions .btn-login,
            .header-actions .btn-register {
                display: none;
            }
            .community-hero {
                padding: 35px 0 30px;
            }
            .community-hero .hero-title {
                font-size: 1.8rem;
            }
            .community-hero .hero-subtitle {
                font-size: 1rem;
            }
            .community-section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .data-band {
                padding: 24px 20px;
            }
            .data-band .data-number {
                font-size: 1.5rem;
            }
            .data-band .data-label {
                font-size: 0.75rem;
            }
            .community-cta {
                padding: 28px 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }
            .community-cta .cta-content h3 {
                font-size: 1.3rem;
            }
            .feature-card {
                padding: 20px 16px;
            }
            .feature-card .feature-number {
                font-size: 2rem;
                top: 2px;
                right: 12px;
            }
            .footer-divider {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .community-hero .hero-title {
                font-size: 1.5rem;
            }
            .community-hero .hero-subtitle {
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .community-card {
                padding: 18px;
            }
            .community-card .card-title {
                font-size: 1rem;
            }
            .data-band .data-item {
                padding: 8px 4px;
            }
            .data-band .data-number {
                font-size: 1.3rem;
            }
            .data-band .data-label {
                font-size: 0.7rem;
                letter-spacing: 0.02em;
            }
            .btn-cta-primary,
            .btn-outline-light-custom {
                padding: 10px 18px;
                font-size: 0.85rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 13px 14px;
            }
            .faq-answer {
                padding: 0 14px 14px;
                padding-top: 12px;
                font-size: 0.85rem;
            }
        }

/* roulang page: category5 */
:root {
            --ink: #1A1D23;
            --copper: #B8965A;
            --copper-hover: #a6844b;
            --warm-bg: #F7F7F5;
            --card-bg: #FFFFFF;
            --line: #E8E6E1;
            --muted: #5C6068;
            --green: #3E7C5B;
            --radius-sm: 8px;
            --radius-md: 10px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(26, 29, 35, 0.04);
            --shadow-hover: 0 8px 24px rgba(26, 29, 35, 0.08);
            --spacing-section: 100px;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', '思源宋体', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans SC', '思源黑体', 'Microsoft YaHei', sans-serif;
            --transition: 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--warm-bg);
            color: var(--ink);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        .text-muted-custom {
            color: var(--muted);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--copper);
        }
        a:focus-visible {
            outline: 2px solid var(--copper);
            outline-offset: 3px;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ============ HEADER ============ */
        .site-header {
            background-color: rgba(247, 247, 245, 0.98);
            border-bottom: 1px solid var(--line);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(26, 29, 35, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: nowrap;
        }
        .brand-logo {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.4rem;
            color: var(--ink);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color var(--transition);
        }
        .brand-logo:hover {
            color: var(--copper);
        }
        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background-color: var(--ink);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .main-nav li a {
            font-size: 0.95rem;
            font-weight: 500;
            color: #3a3e46;
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: color var(--transition);
        }
        .main-nav li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--copper);
            transition: width 0.3s ease;
        }
        .main-nav li a:hover {
            color: var(--ink);
        }
        .main-nav li a:hover::after {
            width: 100%;
        }
        .main-nav li a.active {
            color: var(--ink);
            font-weight: 600;
        }
        .main-nav li a.active::after {
            width: 100%;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn-login {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--ink);
            padding: 8px 16px;
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            background: transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-login:hover {
            border-color: var(--copper);
            color: var(--copper);
        }
        .btn-register {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background-color: var(--ink);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-register:hover {
            background-color: var(--copper);
            color: #fff;
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--ink);
            padding: 8px;
            cursor: pointer;
            border-radius: 6px;
        }
        .navbar-toggler-custom:hover {
            color: var(--copper);
        }
        .mobile-menu {
            display: none;
            background-color: #fff;
            border-top: 1px solid var(--line);
            padding: 12px 24px 20px;
            flex-direction: column;
            gap: 6px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 1rem;
            padding: 10px 0;
            border-bottom: 1px solid var(--line);
            font-weight: 500;
        }

        /* ============ BUTTONS ============ */
        .btn-primary-custom {
            background-color: var(--ink);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            display: inline-block;
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            background-color: var(--copper);
            color: #fff;
            outline: none;
        }
        .btn-secondary-custom {
            background-color: transparent;
            color: var(--ink);
            border: 1px solid var(--line);
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            display: inline-block;
        }
        .btn-secondary-custom:hover,
        .btn-secondary-custom:focus {
            border-color: var(--copper);
            color: var(--copper);
            outline: none;
        }

        /* ============ GENERAL SECTIONS ============ */
        .section {
            padding: 70px 0;
        }
        .section-alt {
            background-color: var(--card-bg);
        }
        .section-eyebrow {
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--copper);
            margin-bottom: 12px;
        }
        .section-title {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 2rem;
            line-height: 1.4;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .section-lead {
            font-size: 1.1rem;
            color: var(--muted);
            margin-bottom: 40px;
        }

        /* ============ HELP HERO ============ */
        .help-hero {
            padding: 80px 0 60px;
        }
        .help-hero h1 {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 2.5rem;
            line-height: 1.4;
            color: var(--ink);
            margin-bottom: 24px;
        }
        .help-hero .lead-text {
            font-size: 1.15rem;
            color: var(--muted);
            max-width: 800px;
            line-height: 1.95;
        }
        .help-hero .hero-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            margin-top: 32px;
            max-height: 400px;
        }
        .help-hero .hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ============ HELP CARDS GRID ============ */
        .help-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .help-card {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .help-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--copper);
            transform: translateY(-4px);
        }
        .help-card .card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .help-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .help-card:hover .card-img img {
            transform: scale(1.05);
        }
        .help-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .help-card .card-tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--copper);
            margin-bottom: 10px;
            letter-spacing: 0.04em;
        }
        .help-card h3 {
            font-family: var(--font-serif);
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.5;
        }
        .help-card p {
            color: var(--muted);
            font-size: 0.95rem;
            flex: 1;
        }
        .help-card .card-link {
            margin-top: 16px;
            font-weight: 600;
            color: var(--ink);
            font-size: 0.9rem;
            align-self: flex-start;
            border-bottom: 2px solid transparent;
            transition: all var(--transition);
        }
        .help-card .card-link:hover {
            color: var(--copper);
            border-bottom-color: var(--copper);
        }

        /* ============ DATA HIGHLIGHT ============ */
        .data-highlight {
            background-color: var(--ink);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 48px 40px;
        }
        .data-highlight .stat-item {
            text-align: center;
            padding: 20px 10px;
        }
        .data-highlight .stat-number {
            font-size: 2.4rem;
            font-weight: 700;
            font-family: var(--font-sans);
            color: var(--copper);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .data-highlight .stat-label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
        }

        /* ============ RELATED LINKS ============ */
        .related-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .related-list li {
            border-bottom: 1px solid var(--line);
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            transition: all var(--transition);
        }
        .related-list li:last-child {
            border-bottom: none;
        }
        .related-list a {
            font-weight: 500;
            color: var(--ink);
            font-size: 1.05rem;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-list a i {
            color: var(--copper);
            font-size: 0.9rem;
        }
        .related-list a:hover {
            color: var(--copper);
        }
        .related-list .related-date {
            font-size: 0.85rem;
            color: var(--muted);
            white-space: nowrap;
        }

        /* ============ CTA BANNER ============ */
        .cta-banner {
            background-color: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
        }
        .cta-banner h2 {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 1.8rem;
            margin-bottom: 12px;
        }
        .cta-banner p {
            color: var(--muted);
            margin-bottom: 28px;
        }

        /* ============ SECURITY SECTION ============ */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .security-item {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 28px;
            display: flex;
            gap: 18px;
            transition: all var(--transition);
        }
        .security-item:hover {
            border-color: var(--copper);
            box-shadow: var(--shadow-sm);
        }
        .security-item .icon-box {
            width: 48px;
            height: 48px;
            border-radius: 8px;
            background-color: rgba(184,150,90,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--copper);
            font-size: 1.4rem;
            flex-shrink: 0;
        }
        .security-item h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .security-item p {
            color: var(--muted);
            font-size: 0.95rem;
            margin: 0;
        }

        /* ============ FAQ ============ */
        .faq-list .accordion-item {
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            background: var(--card-bg);
        }
        .faq-list .accordion-button {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--ink);
            background: transparent;
            padding: 20px 24px;
            box-shadow: none;
        }
        .faq-list .accordion-button:not(.collapsed) {
            color: var(--ink);
            background: rgba(184,150,90,0.04);
        }
        .faq-list .accordion-button:focus {
            box-shadow: none;
            border-color: var(--copper);
        }
        .faq-list .accordion-button::after {
            background-size: 1.2rem;
            transition: transform var(--transition);
        }
        .faq-list .accordion-body {
            padding: 0 24px 20px;
            color: var(--muted);
            line-height: 1.9;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background-color: var(--ink);
            color: rgba(255,255,255,0.75);
            padding: 60px 0 30px;
            margin-top: 80px;
        }
        .site-footer a {
            color: rgba(255,255,255,0.75);
        }
        .site-footer a:hover {
            color: var(--copper);
        }
        .footer-brand {
            font-family: var(--font-serif);
            font-weight: 900;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-links a {
            font-size: 0.9rem;
        }
        .footer-divider {
            border-top: 1px solid rgba(255,255,255,0.15);
            margin-top: 40px;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: end;
            gap: 16px;
        }
        .footer-divider p {
            margin-bottom: 4px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .help-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .security-grid {
                grid-template-columns: 1fr;
            }
            .main-nav {
                gap: 18px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 12px;
            }
            .main-nav {
                display: none;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .mobile-menu {
                display: flex;
                flex-direction: column;
            }
            .help-hero h1 {
                font-size: 2rem;
            }
            .help-card-grid {
                grid-template-columns: 1fr;
            }
            .data-highlight .stat-item {
                padding: 16px 8px;
            }
            .data-highlight .stat-number {
                font-size: 2rem;
            }
            .cta-banner {
                padding: 36px 24px;
            }
            .security-item {
                flex-direction: column;
                gap: 12px;
            }
            .section {
                padding: 50px 0;
            }
            .help-hero {
                padding: 60px 0 40px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .help-hero h1 {
                font-size: 1.7rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .btn-primary-custom,
            .btn-secondary-custom {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .footer-divider {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* 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}