/* roulang page: index */
:root {
            --primary: #101a3a;
            --primary-light: #1b2a5e;
            --secondary: #ffc944;
            --accent: #00d4a8;
            --surface: #f4f6fb;
            --heading: #17223b;
            --body: #3c4761;
            --muted: #657087;
            --border: #e8ebf3;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 10px 40px rgba(16, 26, 58, .08);
            --shadow-hover: 0 20px 50px rgba(16, 26, 58, .14);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            color: #3c4761;
            transition: color .3s;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -6px;
            height: 3px;
            border-radius: 3px;
            background: var(--secondary);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--secondary);
            color: var(--primary);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            transition: transform .3s, box-shadow .3s, background .3s;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(255, 201, 68, .4);
            background: #ffd566;
        }
        .btn-primary:focus {
            outline: 3px solid rgba(255, 201, 68, .4);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(-1px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 2px solid rgba(255, 255, 255, .7);
            color: #fff;
            padding: 11px 26px;
            border-radius: 50px;
            font-weight: 600;
            transition: all .3s;
            background: transparent;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .15);
            border-color: #fff;
            transform: translateY(-3px);
        }
        .btn-outline:focus {
            outline: 3px solid rgba(255, 255, 255, .3);
            outline-offset: 2px;
        }
        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            transition: transform .3s, box-shadow .3s, background .3s;
            border: none;
            cursor: pointer;
        }
        .btn-dark:hover {
            background: var(--primary-light);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(16, 26, 58, .25);
        }
        .card {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(232, 235, 243, .8);
            transition: transform .35s, box-shadow .35s;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card-img img {
            transition: transform .6s;
        }
        .card-img:hover img {
            transform: scale(1.05);
        }
        .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(16, 26, 58, 0) 15%, rgba(16, 26, 58, .92) 100%);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(16, 26, 58, .06);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
        }
        .tag-gold {
            background: rgba(255, 201, 68, .15);
            color: #a97800;
        }
        .divider {
            height: 4px;
            width: 56px;
            border-radius: 4px;
            background: var(--secondary);
            margin-bottom: 16px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            background: #fff;
            transition: box-shadow .3s;
        }
        .faq-item.active {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            cursor: pointer;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: var(--primary);
        }
        .faq-icon {
            transition: transform .3s;
            flex-shrink: 0;
            color: var(--secondary);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 0 24px 24px;
            color: var(--body);
            line-height: 1.7;
        }
        .info-list li {
            position: relative;
            padding-left: 24px;
            color: var(--body);
            line-height: 1.8;
        }
        .info-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 12px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--secondary);
        }
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .mobile-menu.open {
            max-height: 360px;
        }
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(255, 201, 68, .5);
            outline-offset: 2px;
            border-radius: 4px;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: flex !important;
            }
        }
        @media (min-width: 769px) {
            .desktop-nav {
                display: flex !important;
            }
            .mobile-toggle {
                display: none !important;
            }
        }
        .prose-content {
            line-height: 1.85;
            color: var(--body);
            font-size: 16px;
        }
        .prose-content h2 {
            font-size: 24px;
            color: var(--primary);
            font-weight: 700;
            margin: 32px 0 16px;
        }
        .prose-content h3 {
            font-size: 20px;
            color: var(--primary);
            font-weight: 600;
            margin: 24px 0 12px;
        }
        .prose-content p {
            margin-bottom: 16px;
        }
        .prose-content blockquote {
            border-left: 4px solid var(--secondary);
            background: rgba(255, 201, 68, .08);
            padding: 16px 20px;
            border-radius: 8px;
            margin: 20px 0;
            font-style: italic;
        }
        .prose-content ul {
            list-style: disc;
            padding-left: 20px;
            margin-bottom: 16px;
        }
        .prose-content ol {
            list-style: decimal;
            padding-left: 20px;
            margin-bottom: 16px;
        }
        .prose-content li {
            margin-bottom: 8px;
        }
        .prose-content img {
            border-radius: 12px;
            margin: 20px 0;
        }
        .prose-content a {
            color: var(--accent);
            text-decoration: underline;
        }

:root {
            --primary: #101a3a;
            --primary-light: #1b2a5e;
            --secondary: #ffc944;
            --accent: #00d4a8;
            --surface: #f4f6fb;
            --heading: #17223b;
            --body: #3c4761;
            --muted: #657087;
            --border: #e8ebf3;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 10px 40px rgba(16, 26, 58, .08);
            --shadow-hover: 0 20px 50px rgba(16, 26, 58, .14);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            color: #3c4761;
            transition: color .3s;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -6px;
            height: 3px;
            border-radius: 3px;
            background: var(--secondary);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--secondary);
            color: var(--primary);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            transition: transform .3s, box-shadow .3s, background .3s;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(255, 201, 68, .4);
            background: #ffd566;
        }
        .btn-primary:focus {
            outline: 3px solid rgba(255, 201, 68, .4);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 2px solid rgba(255, 255, 255, .7);
            color: #fff;
            padding: 11px 26px;
            border-radius: 50px;
            font-weight: 600;
            transition: all .3s;
            background: transparent;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .15);
            border-color: #fff;
            transform: translateY(-3px);
        }
        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            transition: transform .3s, box-shadow .3s, background .3s;
            border: none;
            cursor: pointer;
        }
        .btn-dark:hover {
            background: var(--primary-light);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(16, 26, 58, .25);
        }
        .card {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(232, 235, 243, .8);
            transition: transform .35s, box-shadow .35s;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card-img img {
            transition: transform .6s;
        }
        .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(16, 26, 58, 0) 15%, rgba(16, 26, 58, .92) 100%);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(16, 26, 58, .06);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
        }
        .tag-gold {
            background: rgba(255, 201, 68, .15);
            color: #a97800;
        }
        .divider {
            height: 4px;
            width: 56px;
            border-radius: 4px;
            background: var(--secondary);
            margin-bottom: 16px;
        }
        .prose-content {
            line-height: 1.85;
            color: var(--body);
            font-size: 16px;
        }
        .prose-content h2 {
            font-size: 24px;
            color: var(--primary);
            font-weight: 700;
            margin: 32px 0 16px;
        }
        .prose-content h3 {
            font-size: 20px;
            color: var(--primary);
            font-weight: 600;
            margin: 24px 0 12px;
        }
        .prose-content p {
            margin-bottom: 16px;
        }
        .prose-content blockquote {
            border-left: 4px solid var(--secondary);
            background: rgba(255, 201, 68, .08);
            padding: 16px 20px;
            border-radius: 8px;
            margin: 20px 0;
            font-style: italic;
        }
        .prose-content ul {
            list-style: disc;
            padding-left: 20px;
            margin-bottom: 16px;
        }
        .prose-content ol {
            list-style: decimal;
            padding-left: 20px;
            margin-bottom: 16px;
        }
        .prose-content li {
            margin-bottom: 8px;
        }
        .prose-content img {
            border-radius: 12px;
            margin: 20px 0;
        }
        .prose-content a {
            color: var(--accent);
            text-decoration: underline;
        }
        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .mobile-menu.open {
            max-height: 360px;
        }
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(255, 201, 68, .5);
            outline-offset: 2px;
            border-radius: 4px;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: flex !important;
            }
        }
        @media (min-width: 769px) {
            .desktop-nav {
                display: flex !important;
            }
            .mobile-toggle {
                display: none !important;
            }
        }

:root {
            --primary: #101a3a;
            --primary-light: #1b2a5e;
            --secondary: #ffc944;
            --accent: #00d4a8;
            --surface: #f4f6fb;
            --heading: #17223b;
            --body: #3c4761;
            --muted: #657087;
            --border: #e8ebf3;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 10px 40px rgba(16, 26, 58, .08);
            --shadow-hover: 0 20px 50px rgba(16, 26, 58, .14);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            color: #3c4761;
            transition: color .3s;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -6px;
            height: 3px;
            border-radius: 3px;
            background: var(--secondary);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--secondary);
            color: var(--primary);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            transition: transform .3s, box-shadow .3s, background .3s;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(255, 201, 68, .4);
            background: #ffd566;
        }
        .btn-primary:focus {
            outline: 3px solid rgba(255, 201, 68, .4);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 2px solid rgba(255, 255, 255, .7);
            color: #fff;
            padding: 11px 26px;
            border-radius: 50px;
            font-weight: 600;
            transition: all .3s;
            background: transparent;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .15);
            border-color: #fff;
            transform: translateY(-3px);
        }
        .btn-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            transition: transform .3s, box-shadow .3s, background .3s;
            border: none;
            cursor: pointer;
        }
        .btn-dark:hover {
            background: var(--primary-light);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(16, 26, 58, .25);
        }
        .card {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(232, 235, 243, .8);
            transition: transform .35s, box-shadow .35s;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card-img img {
            transition: transform .6s;
        }
        .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(16, 26, 58, 0) 15%, rgba(16, 26, 58, .92) 100%);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(16, 26, 58, .06);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
        }
        .tag-gold {
            background: rgba(255, 201, 68, .15);
            color: #a97800;
        }
        .divider {
            height: 4px;
            width: 56px;
            border-radius: 4px;
            background: var(--secondary);
            margin-bottom: 16px;
        }
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .mobile-menu.open {
            max-height: 360px;
        }
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(255, 201, 68, .5);
            outline-offset: 2px;
            border-radius: 4px;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: flex !important;
            }
        }
        @media (min-width: 769px) {
            .desktop-nav {
                display: flex !important;
            }
            .mobile-toggle {
                display: none !important;
            }
        }

/* roulang page: article */
:root {
            --primary: #0f1f3d;
            --secondary: #f5b942;
            --accent: #e85d3f;
            --surface: #f7f8fc;
            --text: #1f2937;
            --muted: #6b7280;
            --border: #e5e7eb;
            --border-radius: 1rem;
            --shadow: 0 8px 30px rgba(15, 31, 61, 0.08);
            --shadow-lift: 0 16px 40px rgba(15, 31, 61, 0.16);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background: #ffffff;
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        .text-primary {
            color: var(--primary) !important;
        }
        .text-secondary {
            color: var(--secondary) !important;
        }
        .bg-primary {
            background: var(--primary) !important;
        }
        .bg-surface {
            background: var(--surface) !important;
        }
        .desktop-nav {
            display: flex !important;
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text);
            padding: 0.5rem 0;
            transition: color 0.2s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: width 0.3s ease;
            border-radius: 2px;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 700;
        }
        .nav-link.active::after {
            width: 100%;
        }
        .btn-dark {
            background: var(--primary);
            color: #fff;
            border-radius: 2rem;
            font-weight: 600;
            transition: background 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
        }
        .btn-dark:hover {
            background: #172a50;
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(15, 31, 61, 0.25);
            color: #fff;
        }
        .mobile-toggle {
            display: none;
        }
        .mobile-menu {
            display: none;
        }
        .mobile-menu.open {
            display: block;
        }
        .hero-banner {
            background-image: linear-gradient(135deg, rgba(15, 31, 61, 0.92) 0%, rgba(15, 31, 61, 0.65) 50%, rgba(245, 185, 66, 0.35) 100%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: scroll;
        }
        .article-body {
            font-size: 1.0625rem;
            line-height: 1.9;
            color: #374151;
        }
        .article-body p {
            margin-bottom: 1.5rem;
        }
        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin: 2rem 0 1rem;
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--primary);
            margin: 1.5rem 0 0.75rem;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 1.5rem 1.5rem;
        }
        .article-body li {
            margin-bottom: 0.5rem;
        }
        .article-body blockquote {
            border-left: 4px solid var(--secondary);
            background: #fffaeb;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 0.75rem 0.75rem 0;
            color: #4b5563;
        }
        .article-body img {
            border-radius: 1rem;
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .fact-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 2rem;
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .fact-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lift);
        }
        .step-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 1.75rem;
            text-align: center;
            position: relative;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lift);
        }
        .step-num {
            width: 3.5rem;
            height: 3.5rem;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: 700;
            margin: 0 auto 1rem;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            padding: 1.25rem 1.5rem;
            transition: box-shadow 0.3s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .cta-section {
            background-image: linear-gradient(135deg, rgba(15, 31, 61, 0.94) 0%, rgba(15, 31, 61, 0.78) 100%), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            border-radius: 1.5rem;
        }
        .footer-link {
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .footer-link:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: inline-flex;
            }
        }
        @media (max-width: 768px) {
            .hero-banner {
                background-position: 70% center;
            }
            .fact-card,
            .step-card {
                padding: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .article-body {
                font-size: 1rem;
            }
            .article-body h2 {
                font-size: 1.25rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0e1b2a;
            --primary-light: #1b2d44;
            --secondary: #e6b31e;
            --secondary-dark: #c9970f;
            --text-main: #1f2937;
            --text-soft: #6b7280;
            --bg-soft: #f8fafc;
            --border: #e5e7eb;
            --radius-lg: 16px;
            --radius-md: 10px;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            color: var(--text-main);
            background: #fff;
            line-height: 1.6;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        a,
        button,
        summary {
            -webkit-tap-highlight-color: transparent;
        }

        /* 导航系统 */
        .desktop-nav {
            display: none;
            align-items: center;
            gap: 2rem;
        }
        @media (min-width: 768px) {
            .desktop-nav {
                display: flex;
            }
        }
        .mobile-toggle {
            display: flex;
        }
        @media (min-width: 768px) {
            .mobile-toggle {
                display: none;
            }
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            font-size: 0.95rem;
            color: #4b5563;
            padding: 0.5rem 0;
            transition: color 0.2s ease;
        }
        .nav-link:hover {
            color: var(--secondary-dark);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .mobile-menu {
            display: none;
        }
        .mobile-menu.open {
            display: block;
        }

        /* 卡片交互 */
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card-hover:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover, 0 12px 32px rgba(14, 27, 42, 0.12));
        }
        .img-zoom {
            overflow: hidden;
        }
        .img-zoom img {
            transition: transform 0.5s ease;
        }
        .img-zoom:hover img {
            transform: scale(1.05);
        }

        /* 按钮 */
        .btn-primary {
            background: var(--primary);
            color: #fff;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(14, 27, 42, 0.18);
        }
        .btn-secondary {
            background: var(--secondary);
            color: var(--primary);
            transition: all 0.3s ease;
        }
        .btn-secondary:hover {
            background: var(--secondary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(230, 179, 30, 0.25);
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            background: #fff;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .faq-item:hover {
            border-color: rgba(230, 179, 30, 0.4);
            box-shadow: 0 4px 16px rgba(14, 27, 42, 0.05);
        }
        .faq-item details summary {
            list-style: none;
            cursor: pointer;
        }
        .faq-item details summary::-webkit-details-marker {
            display: none;
        }
        .faq-icon {
            transition: transform 0.3s ease;
            color: var(--secondary-dark);
        }
        .faq-item details[open] summary .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            animation: fadeIn 0.3s ease;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* 步骤条 */
        .step-item {
            position: relative;
        }
        .step-item:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 2.5rem;
            right: -1.25rem;
            width: 2.5rem;
            height: 2px;
            background: linear-gradient(90deg, var(--secondary) 0%, rgba(230, 179, 30, 0.1) 100%);
            display: none;
        }
        @media (min-width: 768px) {
            .step-item:not(:last-child)::after {
                display: block;
            }
        }

        /* 标签 */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(230, 179, 30, 0.12);
            color: #8a6d0d;
        }

        /* 数据卡片 */
        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(8px);
            transition: background 0.3s ease, transform 0.3s ease;
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-4px);
        }

        /* 焦点可访问性 */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* 分隔线渐变 */
        .divider-gradient {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(230, 179, 30, 0.5), transparent);
        }