/* roulang page: index */
:root {
            --primary: #1C1A17;
            --accent: #A8814A;
            --secondary: #C9A98A;
            --bg-base: #F7F4EF;
            --bg-card: #FFFFFF;
            --dark-section: #1C1A17;
            --text-main: #211D19;
            --text-sub: #6B655E;
            --text-weak: #9C948A;
            --border-soft: #E8E2D8;
            --font-serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", Georgia, serif;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

        input {
            font-family: inherit;
        }

        .container {
            max-width: 80rem;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

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

        /* Reveal animation */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.8s ease-out, transform 0.8s ease-out;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-delay-1 { transition-delay: 0.1s; }
        .reveal-delay-2 { transition-delay: 0.2s; }
        .reveal-delay-3 { transition-delay: 0.3s; }

        /* Line clamp */
        .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;
        }

        /* SVG icon */
        .icon-door {
            width: 24px;
            height: 24px;
        }

        /* Hero decorative MK */
        .hero-mk-bg {
            position: absolute;
            font-family: var(--font-serif);
            font-size: 28rem;
            font-weight: 700;
            color: rgba(28, 26, 23, 0.05);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            pointer-events: none;
            line-height: 1;
            letter-spacing: -0.05em;
            user-select: none;
            z-index: 0;
        }

        @media (max-width: 768px) {
            .hero-mk-bg {
                font-size: 14rem;
            }
        }

        /* Link underline hover */
        .nav-link {
            position: relative;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent);
            transition: width 0.3s ease;
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 500;
        }

        /* Search input */
        .search-input {
            border: 1px solid var(--border-soft);
            background-color: #FFFFFF;
            border-radius: 9999px;
            padding: 0.5rem 1rem;
            font-size: 0.875rem;
            width: 100%;
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .search-input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 1px var(--accent);
        }

        /* Card styles */
        .info-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: 4px;
            overflow: hidden;
            transition: all 0.3s ease-out;
            display: block;
        }

        .info-card:hover {
            box-shadow: 0 8px 30px rgba(28, 26, 23, 0.08);
            border-color: var(--secondary);
            transform: translateY(-2px);
        }

        .info-card .card-img {
            aspect-ratio: 16/10;
            overflow: hidden;
        }

        .info-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .info-card:hover .card-img img {
            transform: scale(1.05);
        }

        /* Badge */
        .badge-category {
            display: inline-block;
            background-color: rgba(201, 169, 138, 0.2);
            color: #8A6A3F;
            font-size: 0.75rem;
            padding: 0.125rem 0.625rem;
            border-radius: 9999px;
            font-weight: 500;
        }

        /* Button */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background-color: var(--primary);
            color: #F7F4EF;
            border-radius: 9999px;
            padding: 0.75rem 1.5rem;
            font-size: 0.875rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: all 0.3s ease;
            border: none;
        }

        .btn-primary:hover {
            background-color: var(--accent);
            transform: translateX(2px);
        }

        .btn-primary:active {
            transform: scale(0.96);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.5rem 0;
            font-size: 0.875rem;
            color: var(--text-main);
            border-bottom: 1px solid transparent;
            transition: all 0.3s ease;
        }

        .btn-secondary .arrow {
            transition: transform 0.3s ease;
        }

        .btn-secondary:hover {
            color: var(--accent);
        }

        .btn-secondary:hover .arrow {
            transform: translateX(4px);
        }

        /* Section title */
        .section-mark {
            font-size: 0.75rem;
            letter-spacing: 0.2em;
            color: var(--accent);
            font-weight: 500;
        }

        .section-title {
            font-family: var(--font-serif);
            font-size: 2rem;
            line-height: 1.2;
            margin-top: 0.5rem;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 2.5rem;
            }
        }

        /* Stats */
        .stat-number {
            font-family: Georgia, "Times New Roman", serif;
            font-size: 3rem;
            color: var(--accent);
            line-height: 1;
        }

        @media (min-width: 768px) {
            .stat-number {
                font-size: 3.5rem;
            }
        }

        /* FAQ */
        .faq-item {
            background-color: var(--bg-card);
            border-bottom: 1px solid var(--border-soft);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border-soft);
        }

        .faq-question {
            padding: 1.25rem 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 500;
        }

        .faq-icon {
            width: 1.25rem;
            height: 1.25rem;
            position: relative;
            flex-shrink: 0;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background-color: var(--primary);
            transition: transform 0.3s ease;
        }

        .faq-icon::before {
            top: 50%;
            left: 0;
            right: 0;
            height: 2px;
            transform: translateY(-50%);
        }

        .faq-icon::after {
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            transform: translateX(-50%);
        }

        .faq-item.open .faq-icon::after {
            transform: translateX(-50%) rotate(90deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0;
            color: var(--text-sub);
            font-size: 0.875rem;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            padding-bottom: 1.25rem;
        }

        /* List row (category2 style) */
        .index-row {
            border-bottom: 1px solid var(--border-soft);
            padding: 1.25rem 1rem;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .index-row:hover {
            background-color: rgba(201, 169, 138, 0.08);
            border-left: 3px solid var(--accent);
        }

        /* Footer links */
        .footer-link {
            color: rgba(247, 244, 239, 0.7);
            transition: color 0.3s ease;
            font-size: 0.875rem;
        }

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

        /* Mobile menu */
        #mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        #mobile-menu.open {
            max-height: 500px;
        }

        /* Form */
        .form-input {
            border: 1px solid var(--border-soft);
            background-color: #FFFFFF;
            border-radius: 9999px;
            padding: 0.75rem 1.25rem;
            font-size: 0.875rem;
            width: 100%;
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 1px var(--accent);
        }

        /* Breadcrumb */
        .breadcrumb {
            font-size: 0.875rem;
            color: var(--text-weak);
            padding-top: 2rem;
        }

        .breadcrumb a {
            color: var(--text-weak);
            transition: color 0.3s;
        }

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

        .breadcrumb .current {
            color: var(--text-main);
        }

        *:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

/* roulang page: category1 */
:root {
            --primary: #1C1A17;
            --accent: #A8814A;
            --secondary: #C9A98A;
            --bg-base: #F7F4EF;
            --bg-card: #FFFFFF;
            --ink: #211D19;
            --sub: #6B655E;
            --muted: #9C948A;
            --border-soft: #E8E2D8;
            --radius: 4px;
            --shadow-card: 0 1px 3px rgba(28,26,23,0.06);
            --shadow-hover: 0 8px 30px rgba(28,26,23,0.10);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-base);
            color: var(--ink);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        @media (min-width: 768px) {
            .container {
                padding: 0 2rem;
            }
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease-out;
        }

        button {
            cursor: pointer;
            background: none;
            border: none;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border-radius: 9999px;
            background: var(--primary);
            color: var(--bg-base);
            padding: 0.75rem 1.5rem;
            font-size: 0.875rem;
            letter-spacing: 0.025em;
            white-space: nowrap;
            transition: all 0.3s ease-out;
            border: 1px solid transparent;
        }
        .btn-primary:hover {
            background: var(--accent);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(0.95);
        }
        .btn-primary .arrow {
            transition: transform 0.3s ease-out;
        }
        .btn-primary:hover .arrow {
            transform: translateX(4px);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            color: var(--ink);
            font-size: 0.875rem;
            font-weight: 500;
            transition: all 0.3s ease-out;
            border-bottom: 1px solid transparent;
        }
        .text-link:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        .text-link .arrow {
            transition: transform 0.3s ease-out;
        }
        .text-link:hover .arrow {
            transform: translateX(4px);
        }

        .nav-link {
            position: relative;
            padding: 0.375rem 0;
            font-size: 0.875rem;
            color: var(--sub);
            transition: color 0.3s ease-out;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            height: 2px;
            width: 0;
            background: var(--accent);
            transition: width 0.3s ease-out;
        }
        .nav-link:hover {
            color: var(--ink);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--ink);
            font-weight: 500;
        }
        .nav-link.active::after {
            width: 100%;
        }

        .search-input {
            border-radius: 9999px;
            background: #fff;
            border: 1px solid var(--border-soft);
            padding: 0.5rem 1rem;
            font-size: 0.875rem;
            width: 100%;
            height: 38px;
            transition: all 0.3s ease-out;
        }
        .search-input::placeholder {
            color: var(--muted);
        }
        .search-input:focus {
            border-color: var(--accent);
            outline: none;
            box-shadow: 0 0 0 3px rgba(168, 129, 74, 0.15);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            border-radius: 9999px;
            background: rgba(201, 169, 138, 0.25);
            color: #8A6A3F;
            font-size: 0.75rem;
            padding: 0.2rem 0.65rem;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .section-tag {
            font-size: 0.75rem;
            letter-spacing: 0.2em;
            color: var(--accent);
            font-weight: 500;
        }

        .timeline {
            position: relative;
            max-width: 720px;
            margin: 0 auto;
        }
        .timeline-item {
            position: relative;
            padding-left: 2.25rem;
            padding-bottom: 2.5rem;
            margin-left: 0.5rem;
            border-left: 1px solid var(--border-soft);
        }
        .timeline-item:last-child {
            border-left-color: transparent;
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -5px;
            top: 4px;
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--accent);
            border: 2px solid var(--bg-base);
        }

        .alt-row {
            display: flex;
            flex-direction: column;
            gap: 2rem;
            align-items: center;
        }
        .alt-row .alt-media {
            width: 100%;
            overflow: hidden;
            border-radius: var(--radius);
            aspect-ratio: 16/11;
            box-shadow: var(--shadow-card);
        }
        .alt-row .alt-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease-out;
        }
        .alt-row:hover .alt-media img {
            transform: scale(1.03);
        }
        .alt-row .alt-body {
            width: 100%;
        }

        @media (min-width: 768px) {
            .alt-row {
                flex-direction: row;
                gap: 4rem;
            }
            .alt-row:nth-child(even) {
                flex-direction: row-reverse;
            }
            .alt-row .alt-media {
                flex: 1;
            }
            .alt-row .alt-body {
                flex: 1;
            }
        }

        .footer-link {
            color: rgba(247, 244, 239, 0.6);
            font-size: 0.875rem;
            transition: color 0.3s ease-out;
        }
        .footer-link:hover {
            color: var(--accent);
        }

        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s ease-out, transform 0.7s ease-out;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .reveal[data-delay="1"] {
            transition-delay: 0.1s;
        }
        .reveal[data-delay="2"] {
            transition-delay: 0.2s;
        }
        .reveal[data-delay="3"] {
            transition-delay: 0.3s;
        }

        .hero-mk-mark {
            font-family: Georgia, "Times New Roman", serif;
            color: rgba(28, 26, 23, 0.03);
            position: absolute;
            user-select: none;
            pointer-events: none;
            line-height: 1;
            z-index: 0;
        }

        .stat-number {
            font-family: Georgia, "Times New Roman", serif;
            color: var(--primary);
        }

        #mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease-out;
        }
        #mobile-menu.open {
            max-height: 520px;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .dark-stat {
            font-family: Georgia, "Times New Roman", serif;
        }

/* roulang page: article */
:root {
            --primary: #1C1A17;
            --accent: #A8814A;
            --secondary: #C9A98A;
            --bg-base: #F7F4EF;
            --text-main: #211D19;
            --text-muted: #6B655E;
            --text-faint: #9C948A;
            --border-soft: #E8E2D8;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        h1,
        h2,
        h3,
        h4 {
            font-family: "Songti SC", "Noto Serif SC", "Source Han Serif SC", serif;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease-out;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }

        /* 导航链接 */
        .nav-link {
            position: relative;
            padding-bottom: 4px;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: right;
            transition: transform 0.3s ease;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
            transform-origin: left;
        }
        .nav-link:hover {
            color: var(--text-main) !important;
        }

        /* 搜索框 */
        .search-input {
            background-color: #fff;
            border: 1px solid var(--border-soft);
            border-radius: 9999px;
            padding: 0.5rem 1rem;
            font-size: 0.875rem;
            color: var(--text-main);
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .search-input::placeholder {
            color: var(--text-faint);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(169, 129, 74, 0.15);
        }

        /* 按钮体系 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border-radius: 9999px;
            padding: 0.75rem 1.5rem;
            background-color: var(--primary);
            color: var(--bg-base);
            font-size: 0.875rem;
            letter-spacing: 0.04em;
            white-space: nowrap;
            transition: background-color 0.3s ease, transform 0.2s ease;
        }
        .btn-primary:hover {
            background-color: var(--accent);
        }
        .btn-primary:active {
            transform: scale(0.96);
        }
        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            color: var(--text-muted);
            font-size: 0.875rem;
            font-weight: 500;
            transition: color 0.3s ease, gap 0.3s ease;
        }
        .btn-text:hover {
            color: var(--accent);
            gap: 0.6rem;
        }
        .btn-primary-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 9999px;
            background: #F7F4EF;
            color: #1C1A17;
            padding: 0.75rem 2rem;
            font-size: 0.875rem;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .btn-primary-light:hover {
            background: var(--accent);
            color: #F7F4EF;
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(247, 244, 239, 0.35);
            border-radius: 9999px;
            color: #F7F4EF;
            padding: 0.75rem 2rem;
            font-size: 0.875rem;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .btn-outline-light:hover {
            border-color: var(--accent);
            background: rgba(169, 129, 74, 0.12);
            color: #C9A98A;
        }

        /* 徽章 */
        .badge {
            display: inline-flex;
            align-items: center;
            font-size: 0.75rem;
            background: rgba(201, 169, 138, 0.18);
            color: #8A6A3F;
            padding: 0.25rem 0.85rem;
            border-radius: 9999px;
            letter-spacing: 0.06em;
        }
        .section-badge {
            font-size: 0.75rem;
            letter-spacing: 0.2em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 0.75rem;
        }
        .tag {
            display: inline-block;
            font-size: 0.75rem;
            border: 1px solid var(--border-soft);
            color: var(--text-muted);
            padding: 0.35rem 0.9rem;
            border-radius: 9999px;
            transition: all 0.3s ease;
        }
        .tag:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        /* 卡片 */
        .card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: 4px;
            overflow: hidden;
            transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
            display: block;
        }
        .card:hover {
            box-shadow: 0 8px 30px rgba(28, 26, 23, 0.08);
            border-color: var(--secondary);
            transform: translateY(-2px);
        }

        /* 社交图标 */
        .social-icon {
            display: flex;
            width: 2rem;
            height: 2rem;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 9999px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.75rem;
            transition: all 0.3s ease;
        }
        .social-icon:hover {
            border-color: var(--accent);
            background: rgba(169, 129, 74, 0.15);
            color: #fff;
        }

        /* 底部链接 */
        .footer-link {
            color: rgba(247, 244, 239, 0.6);
            font-size: 0.875rem;
            transition: color 0.3s ease;
        }
        .footer-link:hover {
            color: #C9A98A;
        }

        /* 文章正文排版 */
        .article-content {
            font-size: 1rem;
            line-height: 2;
            color: var(--text-main);
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 600;
            padding-left: 1rem;
            border-left: 4px solid var(--accent);
            margin-top: 2.75rem;
            margin-bottom: 1rem;
            font-family: "Songti SC", "Noto Serif SC", serif;
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            font-family: "Songti SC", "Noto Serif SC", serif;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            color: #2A2622;
        }
        .article-content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: #8A6A3F;
        }
        .article-content img {
            border-radius: 4px;
            margin: 2rem auto;
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(169, 129, 74, 0.08);
            padding: 1rem 1.5rem;
            color: var(--text-muted);
            margin: 1.75rem 0;
            border-radius: 0 4px 4px 0;
            font-style: italic;
        }
        .article-content ul {
            list-style: disc;
            padding-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .article-content ol {
            list-style: decimal;
            padding-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .article-content li {
            margin-bottom: 0.35rem;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 1.75rem;
            font-size: 0.875rem;
        }
        .article-content th,
        .article-content td {
            border: 1px solid var(--border-soft);
            padding: 0.75rem 1rem;
            text-align: left;
        }
        .article-content th {
            background: rgba(201, 169, 138, 0.15);
            font-weight: 600;
        }
        .article-content code {
            background: rgba(201, 169, 138, 0.15);
            border-radius: 4px;
            padding: 0.2em 0.4em;
            font-size: 0.875em;
        }
        .article-content pre {
            background: #1C1A17;
            color: #F7F4EF;
            padding: 1.25rem;
            border-radius: 4px;
            overflow-x: auto;
            margin-bottom: 1.75rem;
            line-height: 1.6;
        }
        .article-content pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }
        .article-content hr {
            border: none;
            border-top: 1px solid var(--border-soft);
            margin: 2.5rem 0;
        }

        /* 滚动入场 */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .reveal.delay-1 {
            transition-delay: 0.1s;
        }
        .reveal.delay-2 {
            transition-delay: 0.2s;
        }
        .reveal.delay-3 {
            transition-delay: 0.3s;
        }

        /* 内容截断 */
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

/* roulang page: category2 */
:root {
            --primary: #1C1A17;
            --accent: #A8814A;
            --secondary: #C9A98A;
            --bg-base: #F7F4EF;
            --bg-card: #FFFFFF;
            --text-main: #211D19;
            --text-sub: #6B655E;
            --text-weak: #9C948A;
            --border-soft: #E8E2D8;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-base);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        @media (min-width: 768px) {
            .container {
                padding: 0 2rem;
            }
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease-out;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
        }
        input {
            outline: none;
        }

        .nav-link {
            position: relative;
            padding-bottom: 4px;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease-out;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--text-main);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #F7F4EF;
            padding: 12px 24px;
            border-radius: 9999px;
            font-size: 14px;
            letter-spacing: 0.02em;
            transition: all 0.3s ease-out;
        }
        .btn-primary:hover {
            background: var(--accent);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-primary .arrow {
            transition: transform 0.3s ease-out;
        }
        .btn-primary:hover .arrow {
            transform: translateX(4px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-main);
            font-size: 14px;
            border-bottom: 1px solid var(--border-soft);
            padding-bottom: 2px;
            transition: all 0.3s ease-out;
        }
        .btn-secondary:hover {
            color: var(--accent);
            border-color: var(--accent);
        }
        .btn-secondary .arrow {
            transition: transform 0.3s ease-out;
        }
        .btn-secondary:hover .arrow {
            transform: translateX(4px);
        }

        .search-input {
            background: #FFF;
            border: 1px solid var(--border-soft);
            border-radius: 9999px;
            padding: 8px 16px;
            font-size: 14px;
            transition: all 0.3s ease-out;
        }
        .search-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 1px var(--accent);
        }

        .section-tag {
            font-size: 12px;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--accent);
            font-weight: 500;
        }

        .service-row {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #fff;
            border: 1px solid var(--border-soft);
            padding: 20px 24px;
            border-radius: 4px;
            position: relative;
            transition: all 0.3s ease-out;
        }
        .service-row::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--accent);
            transform: scaleY(0);
            transition: transform 0.3s ease-out;
        }
        .service-row:hover {
            background: #FBF7F0;
            border-color: var(--secondary);
            box-shadow: 0 8px 30px rgba(28, 26, 23, 0.06);
            transform: translateX(4px);
        }
        .service-row:hover::before {
            transform: scaleY(1);
        }
        .service-row:hover .row-arrow {
            transform: translateX(4px);
            color: var(--accent);
        }
        .row-number {
            font-family: Georgia, "Times New Roman", serif;
            font-size: 18px;
            color: var(--text-weak);
            min-width: 36px;
            transition: color 0.3s ease-out;
        }
        .service-row:hover .row-number {
            color: var(--accent);
        }
        .row-title {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
        }
        .row-desc {
            font-size: 14px;
            color: var(--text-sub);
            margin-top: 2px;
        }
        .row-arrow {
            margin-left: auto;
            color: var(--text-weak);
            transition: all 0.3s ease-out;
            flex-shrink: 0;
        }

        .group-head {
            display: flex;
            align-items: baseline;
            gap: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-soft);
            margin-bottom: 20px;
        }
        .group-num {
            font-family: Georgia, "Times New Roman", serif;
            font-size: 28px;
            color: var(--accent);
            line-height: 1;
        }
        .group-name {
            font-size: 20px;
            font-weight: 500;
            color: var(--text-main);
        }
        .group-desc {
            font-size: 14px;
            color: var(--text-weak);
        }

        .faq-item {
            border-bottom: 1px solid var(--border-soft);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            cursor: pointer;
            font-weight: 500;
            font-size: 16px;
            color: var(--text-main);
            transition: color 0.3s ease-out;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            position: relative;
            transition: transform 0.3s ease-out;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--accent);
            border-radius: 2px;
        }
        .faq-icon::before {
            left: 50%;
            top: 4px;
            bottom: 4px;
            width: 2px;
            transform: translateX(-50%);
        }
        .faq-icon::after {
            top: 50%;
            left: 4px;
            right: 4px;
            height: 2px;
            transform: translateY(-50%);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease-out;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer p {
            padding-bottom: 20px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.9;
        }

        .footer-link {
            color: rgba(247, 244, 239, 0.65);
            transition: color 0.3s ease-out;
        }
        .footer-link:hover {
            color: #A8814A;
        }

        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.8s ease-out, transform 0.8s ease-out;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .reveal-delay-1 {
            transition-delay: 0.1s;
        }
        .reveal-delay-2 {
            transition-delay: 0.2s;
        }
        .reveal-delay-3 {
            transition-delay: 0.3s;
        }

        @media (max-width: 768px) {
            .group-head {
                flex-wrap: wrap;
                gap: 8px 12px;
            }
            .group-desc {
                width: 100%;
            }
            .service-row {
                padding: 16px 18px;
                gap: 14px;
            }
            .row-number {
                font-size: 16px;
                min-width: 28px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1C1A17;
            --accent: #A8814A;
            --secondary: #C9A98A;
            --bg-base: #F7F4EF;
            --bg-card: #FFFFFF;
            --text-main: #211D19;
            --text-sub: #6B655E;
            --text-weak: #9C948A;
            --border-soft: #E8E2D8;
            --radius-sm: 4px;
            --shadow-card: 0 1px 3px rgba(28, 26, 23, 0.06);
            --shadow-hover: 0 8px 30px rgba(28, 26, 23, 0.10);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: var(--bg-base);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .3s ease;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        @media (min-width: 768px) {
            .container {
                padding: 0 2rem;
            }
        }
        /* ===== Nav ===== */
        .nav-link {
            position: relative;
            transition: color .3s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -6px;
            width: 100%;
            height: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s ease-out;
        }
        .nav-link:hover {
            color: var(--text-main) !important;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .search-input {
            border-radius: 9999px;
            background: #fff;
            border: 1px solid var(--border-soft);
            padding: 0.5rem 1rem 0.5rem 2.5rem;
            font-size: 0.875rem;
            color: var(--text-main);
            transition: border-color .3s ease, box-shadow .3s ease;
            outline: none;
        }
        .search-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(168, 129, 74, 0.15);
        }
        .search-input::placeholder {
            color: var(--text-weak);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: var(--primary);
            color: var(--bg-base);
            border-radius: 9999px;
            padding: 0.75rem 1.5rem;
            font-size: 0.875rem;
            letter-spacing: 0.02em;
            transition: background .3s ease, transform .2s ease, box-shadow .3s ease;
        }
        .btn-primary:hover {
            background: var(--accent);
            box-shadow: 0 4px 16px rgba(168, 129, 74, 0.25);
        }
        .btn-primary:active {
            transform: scale(0.96);
        }
        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--text-sub);
            font-size: 0.95rem;
            font-weight: 500;
            transition: color .3s ease, gap .3s ease;
        }
        .btn-text:hover {
            color: var(--accent);
            gap: 0.6rem;
        }
        /* ===== Section badge ===== */
        .section-badge {
            display: inline-block;
            font-size: 0.75rem;
            letter-spacing: 0.22em;
            color: var(--accent);
            text-transform: uppercase;
            font-weight: 600;
        }
        .section-line {
            width: 40px;
            height: 1px;
            background: var(--accent);
            display: inline-block;
            vertical-align: middle;
            margin: 0 0.6rem;
        }
        /* ===== Breadcrumb ===== */
        .breadcrumb {
            font-size: 0.875rem;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.4rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a {
            color: var(--text-weak);
            transition: color .3s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .current {
            color: var(--text-main);
            font-weight: 500;
        }
        /* ===== Visual ===== */
        .visual-wrap {
            position: relative;
            border-radius: var(--radius-sm);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .visual-wrap img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .visual-wrap .visual-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(28, 26, 23, 0.75), rgba(28, 26, 23, 0.35));
        }
        .visual-wrap .visual-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 3rem 1.5rem;
            max-width: 720px;
        }
        /* ===== Resource module ===== */
        .resource-module {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-sm);
            padding: 1.75rem;
            box-shadow: var(--shadow-card);
            transition: border-color .3s ease, box-shadow .3s ease, transform .3s ease;
        }
        .resource-module:hover {
            border-color: var(--secondary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .resource-module .icon-box {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(201, 169, 138, 0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
        }
        .resource-module h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 0.3rem;
            font-family: 'Songti SC', 'Noto Serif SC', serif;
        }
        .resource-module p {
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 0.4rem;
        }
        .resource-module .arrow-link {
            font-size: 0.875rem;
            color: var(--accent);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: gap .3s ease;
        }
        .resource-module:hover .arrow-link {
            gap: 0.55rem;
        }
        /* ===== Directory ===== */
        .directory-group {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-sm);
            padding: 1.5rem;
            transition: box-shadow .3s ease, border-color .3s ease;
        }
        .directory-group:hover {
            border-color: var(--secondary);
            box-shadow: var(--shadow-hover);
        }
        .directory-group h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 1px solid var(--border-soft);
        }
        .directory-group h3 .dot {
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
        }
        .directory-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.6rem 0;
            border-bottom: 1px dashed var(--border-soft);
            font-size: 0.9rem;
            color: var(--text-sub);
            transition: color .3s ease, padding-left .3s ease;
        }
        .directory-item:last-child {
            border-bottom: none;
        }
        .directory-item:hover {
            color: var(--accent);
            padding-left: 0.35rem;
        }
        .directory-item .item-arrow {
            color: var(--text-weak);
            transition: transform .3s ease;
        }
        .directory-item:hover .item-arrow {
            transform: translateX(3px);
        }
        /* ===== Scenario card ===== */
        .scenario-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow .3s ease, border-color .3s ease, transform .3s ease;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--secondary);
            transform: translateY(-3px);
        }
        .scenario-card .img-wrap {
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }
        .scenario-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .scenario-card:hover .img-wrap img {
            transform: scale(1.05);
        }
        .scenario-card .body {
            padding: 1.25rem;
        }
        .scenario-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 0.4rem;
            font-family: 'Songti SC', 'Noto Serif SC', serif;
        }
        .scenario-card p {
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 1.65;
        }
        /* ===== Process ===== */
        .process-step {
            position: relative;
            padding: 1.5rem 1rem;
        }
        .process-step .step-num {
            font-family: Georgia, 'Times New Roman', serif;
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 0.75rem;
        }
        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: #F7F4EF;
            margin-bottom: 0.4rem;
        }
        .process-step p {
            font-size: 0.875rem;
            color: rgba(247, 244, 239, 0.6);
            line-height: 1.65;
        }
        @media (min-width: 768px) {
            .process-step:not(:last-child)::after {
                content: '';
                position: absolute;
                top: 2.5rem;
                right: -1rem;
                width: 2rem;
                height: 1px;
                background: rgba(168, 129, 74, 0.4);
            }
        }
        /* ===== FAQ ===== */
        .faq-item {
            border-bottom: 1px solid var(--border-soft);
            background: #fff;
            transition: border-color .3s ease;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border-soft);
        }
        .faq-item.active {
            border-color: var(--secondary);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.1rem 1.25rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            cursor: pointer;
            transition: color .3s ease;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-icon {
            width: 1.25rem;
            height: 1.25rem;
            flex-shrink: 0;
            transition: transform .3s ease;
            color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease-out;
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 1.75;
            padding: 0 1.25rem;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 1rem;
        }
        /* ===== CTA ===== */
        .cta-wrap {
            background: rgba(201, 169, 138, 0.12);
            border: 1px solid rgba(168, 129, 74, 0.2);
            border-radius: var(--radius-sm);
        }
        .cta-input {
            border-radius: 9999px;
            background: #fff;
            border: 1px solid var(--border-soft);
            padding: 0.75rem 1.25rem;
            font-size: 0.875rem;
            width: 100%;
            outline: none;
            transition: border-color .3s ease, box-shadow .3s ease;
        }
        .cta-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(168, 129, 74, 0.15);
        }
        /* ===== Footer ===== */
        .footer-link {
            position: relative;
            color: rgba(247, 244, 239, 0.6);
            transition: color .3s ease;
            font-size: 0.9rem;
        }
        .footer-link:hover {
            color: var(--accent);
        }
        /* ===== Reveal ===== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity .6s ease-out, transform .6s ease-out;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .reveal-delay-1 {
            transition-delay: 0.1s;
        }
        .reveal-delay-2 {
            transition-delay: 0.2s;
        }
        .reveal-delay-3 {
            transition-delay: 0.3s;
        }
        /* ===== Responsive tweaks ===== */
        @media (max-width: 640px) {
            .container {
                padding: 0 1.25rem;
            }
            .breadcrumb {
                margin-bottom: 1.25rem;
            }
            .resource-module {
                padding: 1.25rem;
            }
            .visual-wrap {
                min-height: 200px;
            }
        }