/* roulang page: index */
:root {
            --brand-primary: #0E3B3C;
            --brand-light: #1F6E6A;
            --brand-accent: #B98A4E;
            --bg-warm: #F5F2EC;
            --text-main: #222A2A;
            --text-secondary: #5A6666;
            --text-weak: #9AA6A5;
            --border-color: #E8E4DE;
            --card-bg: #FFFFFF;
            --hero-text: #FFFFFF;
            --hero-sub: rgba(255, 255, 255, 0.75);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --radius-pill: 999px;
            --shadow-sm: 0 4px 14px rgba(24, 44, 42, 0.06);
            --shadow-hover: 0 12px 28px rgba(24, 44, 42, 0.12);
            --space-section: 96px;
            --space-section-md: 72px;
            --space-section-sm: 56px;
            --container-max: 1200px;
            --container-pad: 24px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background: #fff;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            margin: 0;
        }
        p {
            margin: 0;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-pad);
        }
        .section {
            padding: var(--space-section) 0;
        }
        .section--warm {
            background: var(--bg-warm);
        }
        .section--line {
            border-top: 1px solid var(--border-color);
        }
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-head .eyebrow {
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            color: var(--brand-accent);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: 38px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            cursor: pointer;
            border: 1px solid transparent;
            transition: all .25s ease;
            justify-content: center;
        }
        .btn--primary {
            background: var(--brand-accent);
            color: #fff;
            border-color: var(--brand-accent);
            box-shadow: 0 4px 14px rgba(185, 138, 78, 0.25);
        }
        .btn--primary:hover {
            background: var(--brand-primary);
            border-color: var(--brand-primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(14, 59, 60, 0.28);
        }
        .btn--ghost {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }
        .btn--ghost:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn--dark {
            background: transparent;
            color: var(--brand-primary);
            border-color: var(--brand-primary);
        }
        .btn--dark:hover {
            background: rgba(14, 59, 60, 0.05);
            border-color: var(--brand-light);
            transform: translateY(-2px);
        }
        .btn:focus,
        a:focus,
        button:focus {
            outline: 3px solid rgba(185, 138, 78, 0.4);
            outline-offset: 2px;
        }

        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: box-shadow .3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(14, 44, 42, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-pad);
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand__mark {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--brand-primary), var(--brand-light));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: 0;
        }
        .brand__text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .brand__name {
            font-size: 18px;
            font-weight: 700;
            color: var(--brand-primary);
            letter-spacing: 1px;
        }
        .brand__tag {
            font-size: 11px;
            color: var(--brand-accent);
            letter-spacing: 2px;
            font-weight: 500;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .nav-menu a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 0;
            position: relative;
            transition: color .25s ease;
        }
        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--brand-accent);
            transition: width .3s ease;
        }
        .nav-menu a:hover {
            color: var(--brand-accent);
        }
        .nav-menu a:hover::after {
            width: 100%;
        }
        .nav-menu a.active {
            color: var(--brand-accent);
        }
        .nav-menu a.active::after {
            width: 100%;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            font-size: 22px;
            color: var(--brand-primary);
            cursor: pointer;
            padding: 8px 10px;
            border-radius: 6px;
            transition: background .2s;
        }
        .nav-toggle:hover {
            background: rgba(14, 59, 60, 0.06);
        }

        .hero {
            background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-light) 100%);
            position: relative;
            overflow: hidden;
            padding: 96px 0 80px;
            color: #fff;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
            background-size: 28px 28px;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 60px;
            align-items: center;
        }
        .hero-content .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-pill);
            padding: 6px 18px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
        }
        .hero-content h1 {
            font-size: 52px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: 2px;
            margin-bottom: 20px;
            color: #fff;
        }
        .hero-content .hero-desc {
            font-size: 18px;
            line-height: 1.75;
            color: var(--hero-sub);
            max-width: 540px;
            margin-bottom: 36px;
        }
        .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .hero-trust {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .hero-trust span {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }
        .hero-trust i {
            color: var(--brand-accent);
        }
        .hero-visual {
            position: relative;
        }
        .hero-visual .visual-frame {
            border-radius: 20px;
            overflow: hidden;
            border: 2px solid rgba(185, 138, 78, 0.5);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
            background: #0e3b3c;
            aspect-ratio: 4/3;
        }
        .hero-visual .visual-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .visual-badge {
            position: absolute;
            bottom: 20px;
            left: -16px;
            background: #fff;
            border-radius: 12px;
            padding: 12px 20px;
            box-shadow: 0 8px 30px rgba(14, 59, 60, 0.15);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .visual-badge .badge-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-accent), #d4af6e);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
        }
        .visual-badge .badge-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.3;
        }
        .visual-badge .badge-text small {
            display: block;
            font-size: 12px;
            color: var(--text-weak);
            font-weight: 400;
        }

        .stats-strip {
            background: var(--bg-warm);
            border-bottom: 1px solid var(--border-color);
            padding: 48px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: transform .3s, box-shadow .3s;
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-item .num {
            font-size: 40px;
            font-weight: 700;
            color: var(--brand-accent);
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .stat-item .label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .services {
            padding: var(--space-section) 0;
        }
        .services-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            align-items: stretch;
        }
        .service-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 40px;
            box-shadow: var(--shadow-sm);
            transition: transform .3s, box-shadow .3s;
            position: relative;
            overflow: hidden;
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .service-card--featured {
            background: linear-gradient(145deg, var(--brand-primary) 0%, #14504f 100%);
            color: #fff;
            border: none;
            grid-row: span 2;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
        }
        .service-card--featured .service-icon {
            width: 56px;
            height: 56px;
            background: rgba(185, 138, 78, 0.25);
            border: 1px solid rgba(185, 138, 78, 0.4);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #d4af6e;
            margin-bottom: 24px;
        }
        .service-card--featured h3 {
            font-size: 26px;
            margin-bottom: 14px;
        }
        .service-card--featured p {
            color: rgba(255, 255, 255, 0.72);
            line-height: 1.75;
            margin-bottom: 20px;
        }
        .service-card--featured .service-link {
            color: #d4af6e;
            font-size: 15px;
            font-weight: 500;
        }
        .service-card--featured .service-link i {
            transition: transform .3s;
        }
        .service-card--featured .service-link:hover i {
            transform: translateX(4px);
        }
        .service-card--compact {
            display: flex;
            flex-direction: column;
        }
        .service-card .service-icon {
            width: 48px;
            height: 48px;
            background: rgba(14, 59, 60, 0.06);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--brand-primary);
            margin-bottom: 20px;
        }
        .service-card h3 {
            font-size: 21px;
            margin-bottom: 10px;
        }
        .service-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }
        .service-link {
            margin-top: 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .service-link:hover {
            color: var(--brand-primary);
        }
        .service-link i {
            font-size: 12px;
            transition: transform .25s;
        }
        .service-link:hover i {
            transform: translateX(3px);
        }

        .advantage {
            background: var(--bg-warm);
            padding: var(--space-section) 0;
        }
        .advantage-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .advantage-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            position: relative;
        }
        .advantage-visual img {
            width: 100%;
            height: 400px;
            object-fit: cover;
        }
        .advantage-content h2 {
            font-size: 34px;
            margin-bottom: 16px;
        }
        .advantage-content>p {
            color: var(--text-secondary);
            font-size: 16px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .advantage-list li {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-color);
            align-items: flex-start;
        }
        .advantage-list li:last-child {
            border-bottom: none;
        }
        .adv-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--brand-accent);
            flex-shrink: 0;
            margin-top: 9px;
        }
        .advantage-list h4 {
            font-size: 17px;
            margin-bottom: 4px;
        }
        .advantage-list p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .cases {
            padding: var(--space-section) 0;
        }
        .brand-wall {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-bottom: 48px;
        }
        .brand-wall span {
            padding: 12px 28px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-pill);
            font-size: 14px;
            color: var(--text-secondary);
            background: #fff;
            transition: all .3s;
        }
        .brand-wall span:hover {
            border-color: var(--brand-accent);
            color: var(--brand-accent);
            transform: translateY(-2px);
        }
        .case-featured {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 40px;
            box-shadow: var(--shadow-sm);
        }
        .case-featured .case-img {
            border-radius: 12px;
            overflow: hidden;
        }
        .case-featured .case-img img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }
        .case-featured h3 {
            font-size: 24px;
            margin-bottom: 12px;
        }
        .case-featured p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .case-meta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .case-meta span {
            font-size: 13px;
            background: var(--bg-warm);
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            color: var(--text-main);
        }

        .process {
            background: var(--bg-warm);
            padding: var(--space-section) 0;
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .process-grid::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: linear-gradient(90deg, var(--brand-accent), var(--border-color), var(--brand-accent));
            opacity: 0.5;
        }
        .process-step {
            text-align: center;
            padding: 30px 20px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            position: relative;
            z-index: 2;
            transition: transform .3s, box-shadow .3s;
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-primary), var(--brand-light));
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            border: 2px solid var(--brand-accent);
            box-shadow: 0 4px 12px rgba(14, 59, 60, 0.2);
        }
        .process-step h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .news-section {
            padding: var(--space-section) 0;
        }
        .news-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 16px;
        }
        .news-header h2 {
            font-size: 34px;
        }
        .news-header .view-all {
            font-size: 14px;
            font-weight: 500;
            color: var(--brand-accent);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border: 1px solid var(--brand-accent);
            border-radius: var(--radius-pill);
            transition: all .3s;
        }
        .news-header .view-all:hover {
            background: var(--brand-accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform .3s, box-shadow .3s;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .news-card__thumb {
            aspect-ratio: 16/9;
            background: var(--bg-warm);
            position: relative;
            overflow: hidden;
        }
        .news-card__thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .news-card:hover .news-card__thumb img {
            transform: scale(1.03);
        }
        .news-card__thumb::after {
            content: '\f005';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            color: rgba(185, 138, 78, 0.25);
            background: var(--bg-warm);
            transition: opacity .3s;
        }
        .news-card__thumb img {
            position: relative;
            z-index: 1;
        }
        .news-card__thumb img[src] {
            z-index: 2;
        }
        .news-card__thumb img:not([src]) {
            display: none;
        }
        .news-card__body {
            padding: 24px;
        }
        .news-card__cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--brand-accent);
            background: rgba(185, 138, 78, 0.08);
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 14px;
        }
        .news-card__title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.4;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card__summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }
        .news-card__meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
        }
        .news-card__meta time {
            font-size: 13px;
            color: var(--text-weak);
        }
        .news-card__meta a {
            font-size: 13px;
            font-weight: 500;
            color: var(--brand-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color .2s;
        }
        .news-card__meta a:hover {
            color: var(--brand-accent);
        }
        .news-empty {
            grid-column: 1/-1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-warm);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-color);
            color: var(--text-secondary);
            font-size: 16px;
        }

        .faq {
            padding: var(--space-section) 0;
            background: var(--bg-warm);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .3s;
        }
        .faq-item.active {
            box-shadow: var(--shadow-sm);
            border-color: rgba(185, 138, 78, 0.4);
        }
        .faq-item__question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 22px 28px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-main);
            cursor: pointer;
            transition: color .2s;
            background: transparent;
            text-align: left;
            width: 100%;
        }
        .faq-item__question:hover {
            color: var(--brand-accent);
        }
        .faq-item__question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1.5px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            flex-shrink: 0;
            transition: all .3s;
            color: var(--brand-accent);
        }
        .faq-item.active .faq-icon {
            background: var(--brand-accent);
            border-color: var(--brand-accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .faq-item.active .faq-item__answer {
            max-height: 300px;
        }
        .faq-item__answer-inner {
            padding: 0 28px 22px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            margin-top: -1px;
        }

        .cta-strip {
            padding: var(--space-section) 0;
            background: #fff;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--brand-primary) 0%, #14504f 100%);
            border-radius: 24px;
            padding: 56px 48px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '\f005';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 160px;
            color: rgba(255, 255, 255, 0.04);
            position: absolute;
            right: 40px;
            bottom: -20px;
            line-height: 1;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            flex: 1;
            min-width: 260px;
        }
        .cta-content h2 {
            font-size: 30px;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 16px;
            line-height: 1.7;
        }
        .cta-box .btn {
            position: relative;
            z-index: 2;
            flex-shrink: 0;
        }

        .site-footer {
            background: #0B2F30;
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand .brand {
            margin-bottom: 20px;
        }
        .footer-brand .brand__name {
            color: #fff;
        }
        .footer-brand .brand__tag {
            color: var(--brand-accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            color: #fff;
            margin-bottom: 20px;
            font-weight: 600;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: color .25s;
        }
        .footer-col ul a:hover {
            color: var(--brand-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .back-top {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid rgba(185, 138, 78, 0.5);
            color: var(--brand-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: all .3s;
        }
        .back-top:hover {
            background: var(--brand-accent);
            color: #fff;
            transform: translateY(-3px);
        }

        @media (max-width: 1024px) {
            :root {
                --space-section: 72px;
            }
            .nav-menu {
                gap: 24px;
            }
            .hero-grid {
                gap: 40px;
                grid-template-columns: 1fr;
            }
            .hero-visual {
                max-width: 560px;
                margin: 0 auto;
            }
            .hero-content {
                text-align: center;
            }
            .hero-content .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-cta,
            .hero-trust {
                justify-content: center;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .service-card--featured {
                grid-row: auto;
            }
            .advantage-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .case-featured {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid::before {
                display: none;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 840px) {
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 12px 30px rgba(14, 44, 42, 0.08);
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all .4s ease;
                z-index: 99;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-menu a {
                display: block;
                padding: 14px 12px;
                font-size: 17px;
                border-radius: 8px;
                transition: background .2s;
            }
            .nav-menu a:hover {
                background: rgba(14, 59, 60, 0.04);
                color: var(--brand-accent);
            }
            .nav-menu a::after {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
        }

        @media (max-width: 640px) {
            :root {
                --space-section: 56px;
                --container-pad: 16px;
            }
            .header-inner {
                height: 64px;
            }
            .brand__name {
                font-size: 16px;
            }
            .brand__tag {
                font-size: 10px;
            }
            .hero {
                padding: 72px 0 56px;
            }
            .hero-content h1 {
                font-size: 34px;
                letter-spacing: 1px;
            }
            .hero-content .hero-desc {
                font-size: 16px;
            }
            .hero-cta {
                flex-direction: column;
            }
            .hero-cta .btn {
                width: 100%;
            }
            .hero-trust {
                flex-direction: column;
                gap: 12px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-item {
                padding: 24px 12px;
            }
            .stat-item .num {
                font-size: 30px;
            }
            .section-head h2 {
                font-size: 28px;
            }
            .section-head p {
                font-size: 15px;
            }
            .service-card {
                padding: 28px 24px;
            }
            .service-card--featured {
                padding: 32px 24px;
            }
            .advantage-content h2 {
                font-size: 28px;
            }
            .advantage-visual img {
                height: 260px;
            }
            .brand-wall span {
                padding: 10px 18px;
                font-size: 13px;
            }
            .case-featured {
                padding: 24px;
            }
            .case-featured .case-img img {
                height: 200px;
            }
            .process-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .news-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .faq-item__question {
                padding: 18px 20px;
                font-size: 15px;
            }
            .cta-box {
                padding: 40px 24px;
                flex-direction: column;
                text-align: center;
            }
            .cta-content h2 {
                font-size: 24px;
            }
            .cta-box .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary-dark: #0E3B3C;
            --primary-mid: #1F6E6A;
            --primary-light: #2E8B87;
            --gold: #B98A4E;
            --gold-light: #D4AF6A;
            --warm-gray: #F5F2EC;
            --white: #FFFFFF;
            --text-dark: #222A2A;
            --text-mid: #5A6666;
            --text-light: #9AA6A5;
            --border-color: #E8E4DE;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --radius-pill: 999px;
            --shadow-sm: 0 4px 14px rgba(24, 44, 42, 0.06);
            --shadow-md: 0 12px 28px rgba(24, 44, 42, 0.12);
            --shadow-gold: 0 8px 24px rgba(185, 138, 78, 0.25);
            --transition: all 0.25s ease;
            --container-max: 1200px;
            --section-gap: 96px;
            --section-gap-md: 72px;
            --section-gap-sm: 56px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-dark);
            background: var(--white);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input, textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul, ol {
            list-style: none;
        }

        h1, h2, h3, h4, h5 {
            font-family: "Noto Serif SC", "PingFang SC", "Microsoft YaHei", serif;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text-dark);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--white);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(24, 44, 42, 0.08);
        }

        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 24px;
        }

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

        .brand__mark {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            color: var(--gold-light);
            font-size: 24px;
            font-weight: 700;
            font-family: "Noto Serif SC", serif;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            box-shadow: 0 4px 12px rgba(14, 59, 60, 0.25);
            border: 1px solid rgba(185, 138, 78, 0.3);
        }

        .brand__text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand__name {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: 1px;
            font-family: "Noto Serif SC", serif;
        }

        .brand__tag {
            font-size: 12px;
            color: var(--gold);
            letter-spacing: 2px;
            font-weight: 500;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 36px;
        }

        .nav-menu a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dark);
            padding: 8px 4px;
            position: relative;
            letter-spacing: 0.5px;
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--gold);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-menu a:hover {
            color: var(--gold);
        }

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

        .nav-menu a.active {
            color: var(--primary-dark);
            font-weight: 600;
        }

        .nav-menu a.active::after {
            width: 100%;
            background: var(--gold);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--warm-gray);
            color: var(--primary-dark);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--gold);
            color: var(--white);
        }

        .nav-toggle.active {
            background: var(--primary-dark);
            color: var(--white);
        }

        /* ===== Hero / Banner ===== */
        .page-banner {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-mid) 100%);
            padding: 88px 0 72px;
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
            background-size: 24px 24px;
            pointer-events: none;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(185, 138, 78, 0.12);
            filter: blur(40px);
            pointer-events: none;
        }

        .banner-inner {
            position: relative;
            z-index: 2;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 28px;
        }

        .banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
        }

        .banner-breadcrumb a:hover {
            color: var(--gold-light);
        }

        .banner-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }

        .page-banner h1 {
            font-size: 48px;
            color: var(--white);
            margin-bottom: 20px;
            letter-spacing: 2px;
            position: relative;
            display: inline-block;
        }

        .page-banner h1::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 64px;
            height: 3px;
            background: var(--gold);
            border-radius: 3px;
        }

        .banner-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            line-height: 1.9;
            margin-top: 28px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-tight {
            padding: 64px 0;
        }

        .section-warm {
            background: var(--warm-gray);
        }

        .section-white {
            background: var(--white);
        }

        .section-header {
            margin-bottom: 48px;
            max-width: 760px;
        }

        .section-header.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-eyebrow {
            font-size: 14px;
            font-weight: 600;
            color: var(--gold);
            letter-spacing: 3px;
            text-transform: uppercase;
            margin-bottom: 12px;
            display: inline-block;
        }

        .section-header h2 {
            font-size: 36px;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-mid);
            line-height: 1.8;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(232, 228, 222, 0.8);
            overflow: hidden;
            transition: var(--transition);
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .card-media {
            position: relative;
            aspect-ratio: 16 / 9;
            background: var(--warm-gray);
            overflow: hidden;
        }

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

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

        .card-body {
            padding: 24px;
        }

        .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--gold);
            background: rgba(185, 138, 78, 0.1);
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .card-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.5;
            transition: var(--transition);
        }

        .card:hover .card-title {
            color: var(--primary-mid);
        }

        .card-desc {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.8;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-light);
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            margin-top: 4px;
        }

        .card-link {
            color: var(--gold);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .card-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
            letter-spacing: 0.5px;
        }

        .btn-gold {
            background: var(--gold);
            color: var(--white);
            box-shadow: var(--shadow-gold);
        }

        .btn-gold:hover {
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(185, 138, 78, 0.35);
            color: var(--white);
        }

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

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--white);
            transform: translateY(-2px);
            color: var(--white);
        }

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

        .btn-outline-dark:hover {
            background: rgba(14, 59, 60, 0.05);
            border-color: var(--gold);
            color: var(--gold);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 10px 22px;
            font-size: 14px;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(185, 138, 78, 0.4);
            outline-offset: 2px;
        }

        /* ===== 数据徽章 ===== */
        .stats-bar {
            background: var(--white);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(24, 44, 42, 0.04);
            position: relative;
            z-index: 5;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
        }

        .stat-item {
            padding: 36px 24px;
            text-align: center;
            position: relative;
        }

        .stat-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 48px;
            background: var(--border-color);
        }

        .stat-number {
            font-size: 44px;
            font-weight: 700;
            color: var(--gold);
            line-height: 1.2;
            font-family: "Noto Serif SC", serif;
            letter-spacing: 1px;
        }

        .stat-number span {
            font-size: 24px;
            margin-left: 2px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-mid);
            margin-top: 8px;
            letter-spacing: 1px;
        }

        /* ===== 精选条目卡片 ===== */
        .featured-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .featured-card {
            display: flex;
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(232, 228, 222, 0.8);
            overflow: hidden;
            transition: var(--transition);
        }

        .featured-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .featured-media {
            flex: 0 0 240px;
            position: relative;
            overflow: hidden;
            min-height: 200px;
            background: var(--warm-gray);
        }

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

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

        .featured-body {
            padding: 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-body .card-tag {
            align-self: flex-start;
        }

        .featured-body h3 {
            font-size: 22px;
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .featured-body p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.8;
            margin-bottom: 16px;
            flex-grow: 1;
        }

        /* ===== 分类标签墙 ===== */
        .tag-wall {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-pill);
            font-size: 14px;
            color: var(--primary-dark);
            font-weight: 500;
            transition: var(--transition);
        }

        .tag-item:hover {
            border-color: var(--gold);
            color: var(--gold);
            background: rgba(185, 138, 78, 0.05);
            transform: translateY(-2px);
        }

        .tag-item i {
            color: var(--gold);
            font-size: 12px;
        }

        /* ===== 分类介绍长文 ===== */
        .intro-section {
            background: var(--warm-gray);
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .intro-content h2 {
            font-size: 34px;
            margin-bottom: 24px;
            line-height: 1.5;
        }

        .intro-content p {
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.95;
            margin-bottom: 18px;
        }

        .intro-content .highlight {
            color: var(--primary-dark);
            font-weight: 600;
        }

        .intro-list {
            margin-top: 24px;
        }

        .intro-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 15px;
            color: var(--text-dark);
        }

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

        .intro-list li i {
            color: var(--gold);
            margin-top: 6px;
            font-size: 14px;
            width: 18px;
            text-align: center;
        }

        .intro-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 420px;
            box-shadow: var(--shadow-md);
        }

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

        .intro-media:hover img {
            transform: scale(1.02);
        }

        .intro-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(14, 59, 60, 0.3), transparent 60%);
            pointer-events: none;
        }

        .intro-media-badge {
            position: absolute;
            bottom: 24px;
            left: 24px;
            z-index: 2;
            background: rgba(14, 59, 60, 0.85);
            backdrop-filter: blur(8px);
            padding: 16px 24px;
            border-radius: var(--radius-md);
            color: var(--white);
            border: 1px solid rgba(185, 138, 78, 0.3);
        }

        .intro-media-badge strong {
            font-size: 20px;
            color: var(--gold-light);
            display: block;
        }

        .intro-media-badge span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== 服务流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            counter-reset: process;
        }

        .process-item {
            position: relative;
            padding: 36px 28px;
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(232, 228, 222, 0.8);
            transition: var(--transition);
        }

        .process-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .process-step {
            font-size: 40px;
            font-weight: 700;
            font-family: "Noto Serif SC", serif;
            color: var(--gold);
            line-height: 1;
            margin-bottom: 20px;
            display: block;
        }

        .process-item h3 {
            font-size: 18px;
            margin-bottom: 12px;
        }

        .process-item p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.8;
        }

        .process-line {
            position: absolute;
            top: 50%;
            right: -32px;
            width: 32px;
            height: 1px;
            background: var(--gold);
            opacity: 0.4;
        }

        .process-line:last-child {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 24px 32px;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            transition: var(--transition);
            width: 100%;
            text-align: left;
            background: transparent;
            font-family: inherit;
        }

        .faq-question:hover {
            color: var(--primary-mid);
            background: rgba(245, 242, 236, 0.5);
        }

        .faq-question .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--warm-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--gold);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            background: var(--gold);
            color: var(--white);
            transform: rotate(45deg);
        }

        .faq-answer {
            display: none;
            padding: 0 32px 28px;
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.9;
        }

        .faq-item.active .faq-answer {
            display: block;
            animation: fadeInUp 0.3s ease;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
        }

        .cta-box {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid));
            border-radius: 24px;
            padding: 64px 56px;
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
            background-size: 20px 20px;
            pointer-events: none;
        }

        .cta-box::after {
            content: '\f02d';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: 40px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 180px;
            color: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            flex: 1;
        }

        .cta-content h2 {
            font-size: 30px;
            color: var(--white);
            margin-bottom: 14px;
        }

        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            max-width: 560px;
        }

        .cta-action {
            position: relative;
            z-index: 2;
            flex-shrink: 0;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0B2F30;
            color: rgba(255, 255, 255, 0.7);
            padding: 72px 0 32px;
            position: relative;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand .brand__name {
            color: var(--white);
        }

        .footer-brand .brand__mark {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(185, 138, 78, 0.3);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.9;
            margin-top: 20px;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 16px;
            color: var(--white);
            margin-bottom: 20px;
            font-weight: 600;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--gold);
            border-radius: 2px;
        }

        .footer-col ul li {
            margin-bottom: 14px;
        }

        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

        .footer-col ul a:hover {
            color: var(--gold-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .footer-bottom span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .back-top {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid rgba(185, 138, 78, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--gold-light);
            transition: var(--transition);
        }

        .back-top:hover {
            background: var(--gold);
            color: var(--white);
            border-color: var(--gold);
            transform: translateY(-2px);
        }

        /* ===== 返回首页 ===== */
        .back-home-section {
            padding: 40px 0 80px;
            text-align: center;
        }

        .back-home-wrap {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            color: var(--primary-dark);
            font-weight: 500;
            padding: 14px 32px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
            background: var(--white);
        }

        .back-home-wrap:hover {
            border-color: var(--gold);
            color: var(--gold);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1024px) {
            :root {
                --section-gap: 72px;
            }

            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .intro-media {
                min-height: 320px;
            }

            .process-grid {
                grid-template-columns: 1fr 1fr;
            }

            .process-line {
                display: none;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }

            .featured-list {
                grid-template-columns: 1fr;
            }

            .featured-media {
                flex: 0 0 200px;
            }

            .cta-box {
                flex-direction: column;
                text-align: center;
                padding: 48px 40px;
            }

            .cta-content p {
                margin: 0 auto;
            }

            .cta-action {
                justify-content: center;
            }
        }

        @media screen and (max-width: 840px) {
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 0;
                box-shadow: 0 12px 32px rgba(24, 44, 42, 0.12);
                border-bottom: 1px solid var(--border-color);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.35s ease;
                z-index: 999;
            }

            .nav-menu.open {
                max-height: 300px;
            }

            .nav-menu a {
                padding: 16px 24px;
                border-bottom: 1px solid var(--border-color);
                font-size: 16px;
            }

            .nav-menu a::after {
                display: none;
            }

            .nav-menu a.active {
                background: rgba(185, 138, 78, 0.08);
                border-left: 3px solid var(--gold);
                color: var(--gold);
            }

            .nav-toggle {
                display: flex;
            }

            .page-banner h1 {
                font-size: 36px;
            }

            .banner-desc {
                font-size: 16px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stat-item:nth-child(2)::after {
                display: none;
            }

            .stat-item:nth-child(-n+2) {
                border-bottom: 1px solid var(--border-color);
            }

            .featured-card {
                flex-direction: column;
            }

            .featured-media {
                flex: none;
                min-height: 180px;
                aspect-ratio: 16 / 6;
            }
        }

        @media screen and (max-width: 640px) {
            .container,
            .header-inner,
            .banner-inner {
                padding-left: 16px;
                padding-right: 16px;
            }

            :root {
                --section-gap: 56px;
            }

            .header-inner {
                min-height: 64px;
            }

            .brand__mark {
                width: 38px;
                height: 38px;
                font-size: 20px;
            }

            .brand__name {
                font-size: 17px;
            }

            .brand__tag {
                font-size: 10px;
            }

            .nav-menu {
                top: 64px;
            }

            .page-banner {
                padding: 56px 0 48px;
            }

            .page-banner h1 {
                font-size: 30px;
            }

            .page-banner h1::after {
                width: 48px;
            }

            .banner-desc {
                font-size: 15px;
            }

            .section-header h2 {
                font-size: 28px;
            }

            .section-header p {
                font-size: 15px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0;
            }

            .stat-item {
                padding: 24px 16px;
            }

            .stat-number {
                font-size: 32px;
            }

            .stat-number span {
                font-size: 18px;
            }

            .stat-label {
                font-size: 12px;
            }

            .featured-list {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .featured-media {
                aspect-ratio: 16 / 8;
                min-height: 140px;
            }

            .featured-body {
                padding: 20px;
            }

            .featured-body h3 {
                font-size: 19px;
            }

            .intro-grid {
                gap: 28px;
            }

            .intro-content h2 {
                font-size: 26px;
            }

            .intro-media {
                min-height: 260px;
            }

            .intro-media-badge {
                bottom: 16px;
                left: 16px;
                padding: 14px 18px;
            }

            .process-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .process-item {
                padding: 24px 22px;
            }

            .faq-question {
                padding: 20px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 20px 20px;
                font-size: 14px;
            }

            .cta-section {
                padding: 48px 0;
            }

            .cta-box {
                padding: 40px 24px;
                flex-direction: column;
                text-align: center;
                gap: 24px;
            }

            .cta-content h2 {
                font-size: 24px;
            }

            .cta-content p {
                font-size: 14px;
            }

            .btn {
                padding: 12px 24px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }

            .cta-action {
                width: 100%;
                flex-direction: column;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 16px;
                text-align: center;
            }

            .tag-wall {
                gap: 8px;
            }

            .tag-item {
                padding: 8px 14px;
                font-size: 13px;
            }
        }

        @media screen and (max-width: 400px) {
            .brand__name {
                font-size: 15px;
            }

            .brand__tag {
                display: none;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }

            .stat-item {
                padding: 20px 12px;
            }

            .stat-number {
                font-size: 28px;
            }
        }

/* roulang page: article */
/* ========== 设计变量 ========== */
:root {
    --primary: #0E3B3C;
    --primary-light: #1F6E6A;
    --accent: #B98A4E;
    --accent-hover: #9E7139;
    --bg-warm: #F5F2EC;
    --text-main: #222A2A;
    --text-secondary: #5A6666;
    --text-muted: #9AA6A5;
    --border: #E8E4DE;
    --white: #FFFFFF;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 4px 14px rgba(24, 44, 42, 0.06);
    --shadow-md: 0 12px 28px rgba(24, 44, 42, 0.12);
    --container: 1200px;
    --transition: 0.25s ease;
}

/* ========== Reset / 基础 ========== */
*, *::before, *::after { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-main);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; }
button { font-family: inherit; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; margin: 0 0 0.5em; }
p { margin: 0 0 1em; }

/* ========== 容器 ========== */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== Header / 导航 ========== */
.site-header {
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}
.header-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
    height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; flex-shrink: 0; }
.brand__mark {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 700;
    flex-shrink: 0;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__name { font-size: 18px; font-weight: 700; color: var(--primary); letter-spacing: 0.5px; }
.brand__tag { font-size: 11px; color: var(--accent); letter-spacing: 3px; margin-top: 2px; }
.nav-menu { display: flex; gap: 36px; align-items: center; }
.nav-menu a {
    font-size: 15px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 2px;
    position: relative;
    transition: color var(--transition);
}
.nav-menu a:hover { color: var(--accent); }
.nav-menu a.active { color: var(--primary); font-weight: 600; }
.nav-menu a.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
}
.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    color: var(--primary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
}
.nav-toggle:focus { outline: 3px solid rgba(185, 138, 78, 0.4); }

/* ========== 面包屑 ========== */
.breadcrumb-wrap {
    background: var(--bg-warm);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
}
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    font-size: 14px;
    color: var(--text-muted);
}
.breadcrumb a { color: var(--text-secondary); text-decoration: none; transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 10px; color: var(--border); }
.breadcrumb .current {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 220px;
    color: var(--text-muted);
}

/* ========== 文章主体 ========== */
.article-section {
    padding: 56px 0 96px;
    background: var(--bg-warm);
}
.article-section .row {
    max-width: 920px;
    margin: 0 auto;
    width: 100%;
}
.article-section .columns { padding: 0 20px; }
.article-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 48px 56px;
}
.article-head { text-align: center; margin-bottom: 40px; }
.article-head h1 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text-main);
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}
.article-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px 28px;
    font-size: 14px;
    color: var(--text-muted);
}
.article-meta span { display: inline-flex; align-items: center; gap: 8px; }
.article-meta i { color: var(--accent); font-size: 13px; }

/* ========== 正文阅读区 ========== */
.article-body { font-size: 17px; line-height: 1.9; color: var(--text-main); }
.article-body > *:last-child { margin-bottom: 0; }
.article-body p { margin-bottom: 1.6em; }
.article-body h2 {
    font-size: 26px;
    font-weight: 700;
    margin: 2em 0 0.8em;
    color: var(--primary);
}
.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    margin: 1.8em 0 0.8em;
    color: var(--text-main);
}
.article-body blockquote {
    border-left: 3px solid var(--accent);
    background: var(--bg-warm);
    padding: 18px 24px;
    margin: 1.8em 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
    font-style: normal;
}
.article-body ul,
.article-body ol {
    margin: 0 0 1.6em 0;
    padding-left: 1.4em;
}
.article-body li { margin-bottom: 0.6em; }
.article-body img {
    border-radius: var(--radius-md);
    margin: 1.5em auto;
    box-shadow: var(--shadow-sm);
    background: var(--bg-warm);
}
.article-body img + em {
    display: block;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: -12px;
    margin-bottom: 1.6em;
}
.article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--accent-hover); }
.article-body code {
    background: #2D3737;
    color: #E8E4DE;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: "SFMono-Regular", Consolas, monospace;
}
.article-body pre {
    background: #2D3737;
    border-radius: var(--radius-md);
    padding: 24px;
    overflow-x: auto;
    margin: 1.8em 0;
}
.article-body pre code { background: none; color: #E8E4DE; padding: 0; }

/* ========== 内容未找到 ========== */
.not-found { text-align: center; padding: 80px 24px; }
.not-found i { font-size: 48px; color: var(--border); margin-bottom: 20px; display: block; }
.not-found p { font-size: 18px; color: var(--text-secondary); margin-bottom: 24px; }

/* ========== 文章底部 ========== */
.article-footer { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border); }
.article-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 28px; }
.tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-warm);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 13px;
    color: var(--text-secondary);
}
.post-nav { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.post-nav__item {
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 10px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--white);
}
.post-nav__item:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.post-nav__item--disabled {
    color: var(--text-muted);
    background: var(--bg-warm);
    cursor: default;
}
.post-nav__item--disabled:hover { border-color: var(--border); color: var(--text-muted); transform: none; }
.post-nav__center { background: var(--bg-warm); }

/* ========== 相关推荐 ========== */
.related-section { padding: 96px 0; background: var(--white); }
.section-head { text-align: center; margin-bottom: 48px; }
.section-head .eyebrow {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 10px;
    font-weight: 600;
}
.section-head h2 { font-size: 32px; font-weight: 700; color: var(--text-main); margin-bottom: 12px; }
.section-head p { font-size: 16px; color: var(--text-muted); max-width: 560px; margin: 0 auto; }
.related-grid { margin: 0 -12px; max-width: none; }
.related-grid .columns { padding: 0 12px; margin-bottom: 24px; }
.related-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.related-card__thumb {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--bg-warm);
}
.related-card__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.related-card:hover .related-card__thumb img { transform: scale(1.04); }
.related-card__body { padding: 20px 24px 24px; }
.related-card__body h3 { font-size: 16px; font-weight: 600; line-height: 1.5; margin: 0 0 10px; }
.related-card__body h3 a { color: var(--text-main); text-decoration: none; transition: color var(--transition); }
.related-card__body h3 a:hover { color: var(--accent); }
.related-card__body p { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin: 0; }

/* ========== CTA 横条 ========== */
.cta-section { padding: 0 0 96px; background: var(--white); }
.cta-section .row { max-width: var(--container); margin: 0 auto; }
.cta-section .columns { padding: 0 20px; }
.cta-box {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 24px;
    padding: 56px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    position: relative;
    overflow: hidden;
}
.cta-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.07) 1px, transparent 0);
    background-size: 24px 24px;
}
.cta-box__content { position: relative; z-index: 1; }
.cta-box h2 { color: #fff; font-size: 28px; font-weight: 700; margin-bottom: 12px; }
.cta-box p { color: rgba(255,255,255,0.75); font-size: 16px; margin: 0; }
.cta-box .btn { position: relative; z-index: 1; flex-shrink: 0; }

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
    line-height: 1.2;
}
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.6); }
.btn--ghost:hover { background: rgba(255,255,255,0.1); border-color: #fff; color: #fff; transform: translateY(-2px); }
.btn:focus { outline: 3px solid rgba(185, 138, 78, 0.4); outline-offset: 2px; }

/* ========== Footer ========== */
.site-footer {
    background: #0B2F30;
    color: #B8C4C3;
    padding: 64px 0 24px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand .brand__mark { background: rgba(255,255,255,0.12); }
.footer-brand .brand__name { color: #fff; }
.footer-brand .brand__tag { color: var(--accent); }
.footer-brand p { font-size: 14px; line-height: 1.8; margin: 16px 0 0; color: #93A5A4; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 12px; }
.footer-col a { color: #93A5A4; text-decoration: none; font-size: 14px; transition: color var(--transition); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: #7E918F;
}
.back-top {
    width: 40px;
    height: 40px;
    border: 1px solid var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    text-decoration: none;
    transition: all var(--transition);
}
.back-top:hover { background: var(--accent); color: #fff; transform: translateY(-3px); }

/* ========== 响应式 ========== */
@media (max-width: 840px) {
    .nav-menu {
        position: fixed;
        top: 76px;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--border);
        padding: 16px 24px;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        box-shadow: var(--shadow-sm);
        z-index: 99;
    }
    .nav-menu.open { transform: translateY(0); }
    .nav-menu a { display: block; padding: 14px 8px; border-radius: var(--radius-sm); }
    .nav-menu a:hover { background: var(--bg-warm); color: var(--accent); }
    .nav-menu a.active::after { display: none; }
    .nav-menu a.active { background: rgba(185,138,78,0.08); }
    .nav-toggle { display: block; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .article-card { padding: 40px 32px; }
}

@media (max-width: 640px) {
    .header-inner { height: 64px; padding: 0 16px; }
    .nav-menu { top: 64px; }
    .container { padding: 0 16px; }
    .article-section { padding: 40px 0 64px; }
    .article-section .columns { padding: 0 12px; }
    .article-card { padding: 32px 20px; }
    .article-head h1 { font-size: 28px; }
    .article-body { font-size: 16px; }
    .related-section { padding: 64px 0; }
    .related-grid { margin: 0 -8px; }
    .related-grid .columns { padding: 0 8px; }
    .cta-section { padding: 0 0 64px; }
    .cta-box { flex-direction: column; text-align: center; padding: 40px 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 16px; }
    .post-nav { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 520px) {
    .breadcrumb .current { max-width: 140px; }
    .article-meta { gap: 8px 16px; }
    .section-head h2 { font-size: 26px; }
    .cta-box h2 { font-size: 22px; }
}