/* roulang page: index */
:root {
            --primary: #0E8C84;
            --primary-dark: #0F7B77;
            --primary-light: #E6F5F3;
            --ink: #20262F;
            --ink-soft: #2A2F36;
            --text-body: #3E4650;
            --text-weak: #6B7280;
            --bg-main: #F6F7F9;
            --bg-card: #FFFFFF;
            --border: #E9ECEF;
            --gold: #C9964A;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --shadow-soft: 0 2px 8px rgba(32, 38, 47, 0.06);
            --shadow-float: 0 8px 24px rgba(32, 38, 47, 0.08);
            --shadow-hover: 0 12px 28px rgba(32, 38, 47, 0.14);
            --gradient-brand: linear-gradient(135deg, #0E8C84 0%, #20262F 120%);
            --gradient-gold: linear-gradient(135deg, #C9964A 0%, #A87830 100%);
            --sidebar-width: 232px;
            --font-sans: "PingFang SC", "HarmonicOS Sans", "Microsoft YaHei", "Inter", "Arial", sans-serif;
            --font-num: "Inter", "Arial", sans-serif;
        }

        /* Reset Base */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-main);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5 {
            margin: 0 0 16px;
            color: var(--ink-soft);
            line-height: 1.3;
            font-weight: 700;
        }
        p {
            margin: 0 0 16px;
        }

        .container-custom {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 48px;
            width: 100%;
        }

        /* Layout */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            width: var(--sidebar-width);
            flex-shrink: 0;
            background: #FFFFFF;
            border-right: 1px solid var(--border);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 40;
            display: flex;
            flex-direction: column;
            transition: transform .3s ease;
        }
        .main-area {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        /* Sidebar Brand */
        .sidebar-brand {
            padding: 28px 24px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: var(--gradient-brand);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(14, 140, 132, .25);
        }
        .sidebar-brand .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: .5px;
            line-height: 1.3;
        }
        .sidebar-brand .brand-sub {
            font-size: 11px;
            color: var(--text-weak);
            letter-spacing: .5px;
            margin-top: 2px;
        }

        /* Sidebar Nav */
        .sidebar-nav {
            padding: 20px 14px;
            flex: 1;
        }
        .sidebar-nav .nav-label {
            font-size: 12px;
            color: var(--text-weak);
            padding: 8px 12px 6px;
            letter-spacing: .5px;
            text-transform: uppercase;
        }
        .sidebar-nav ul li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 10px;
            color: #4A5560;
            font-size: 15px;
            font-weight: 500;
            position: relative;
            transition: all .2s ease;
            margin-bottom: 4px;
        }
        .sidebar-nav ul li a i {
            width: 20px;
            text-align: center;
            font-size: 15px;
            color: var(--text-weak);
            transition: color .2s ease;
        }
        .sidebar-nav ul li a:hover {
            background: #F6F8F9;
            color: var(--ink-soft);
        }
        .sidebar-nav ul li a:hover i {
            color: var(--primary);
        }
        .sidebar-nav ul li a.active {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 600;
        }
        .sidebar-nav ul li a.active::before {
            content: "";
            position: absolute;
            left: -14px;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 22px;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
        }
        .sidebar-nav ul li a.active i {
            color: var(--primary);
        }

        /* Sidebar Bottom */
        .sidebar-footer {
            padding: 16px 24px 24px;
            border-top: 1px solid var(--border);
        }
        .sidebar-footer .copyright {
            font-size: 12px;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* Main Content */
        .main-content {
            flex: 1;
            width: 100%;
        }

        /* Hero */
        .hero-section {
            background-color: var(--ink);
            background-image: linear-gradient(135deg, rgba(14, 140, 132, .35) 0%, rgba(32, 38, 47, .4) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 72px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::after {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: radial-gradient(ellipse at center right, rgba(14, 140, 132, .25) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 48px;
        }
        .hero-copy {
            flex: 0 0 58%;
            max-width: 58%;
        }
        .hero-copy h1 {
            color: #FFFFFF;
            font-size: 44px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }
        .hero-copy .hero-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, .78);
            line-height: 1.75;
            margin-bottom: 28px;
        }
        .hero-badges {
            margin-top: 32px;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-badge {
            background: rgba(255, 255, 255, .12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: 999px;
            padding: 10px 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .hero-badge .num {
            font-family: var(--font-num);
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .hero-badge .lbl {
            font-size: 13px;
            color: rgba(255, 255, 255, .75);
        }
        .hero-visual {
            flex: 0 0 42%;
            max-width: 42%;
            position: relative;
        }
        .hero-visual .viz-card {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .15);
            border-radius: 16px;
            backdrop-filter: blur(10px);
            padding: 28px;
            position: relative;
            transform: rotate(1.5deg);
        }
        .hero-visual .viz-card::before {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            top: -10px;
            height: 20px;
            background: rgba(255, 255, 255, .04);
            border-radius: 12px;
            z-index: -1;
            transform: rotate(-2deg);
        }

        /* Buttons */
        .btn-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gradient-brand);
            color: #fff !important;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(14, 140, 132, .3);
            transition: all .25s ease;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(14, 140, 132, .4);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: rgba(255, 255, 255, .85) !important;
            border: 1px solid rgba(255, 255, 255, .4);
            font-size: 15px;
            font-weight: 500;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            transition: all .25s ease;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(255, 255, 255, .7);
            color: #fff;
        }
        .btn-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #FFFFFF;
            color: var(--ink) !important;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-soft);
            transition: all .25s ease;
        }
        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            color: var(--primary-dark);
        }

        /* Section */
        .section-block {
            padding: 100px 0;
        }
        .section-block.alt-bg {
            background: var(--bg-main);
        }
        .section-block.white-bg {
            background: #FFFFFF;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 16px;
            border-radius: 999px;
            font-weight: 600;
            letter-spacing: .5px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 32px;
            color: var(--ink);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-weak);
            max-width: 620px;
            line-height: 1.75;
            margin-bottom: 40px;
        }
        .section-title-line {
            width: 64px;
            height: 4px;
            background: var(--gradient-brand);
            border-radius: 8px;
            margin: 0 0 24px;
        }

        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-soft);
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }
        .feature-card::after {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 80px;
            height: 80px;
            background: radial-gradient(circle at top right, rgba(14, 140, 132, .08), transparent 70%);
            border-radius: 0 0 0 80px;
            transition: all .3s ease;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(14, 140, 132, .2);
        }
        .feature-card:hover::after {
            width: 120px;
            height: 120px;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            background: var(--primary-light);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .feature-card .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .feature-card .feature-link i {
            transition: transform .2s ease;
        }
        .feature-card .feature-link:hover i {
            transform: translateX(4px);
        }

        /* Timeline / Scenes */
        .scenes-wrap {
            display: flex;
            gap: 60px;
            align-items: center;
        }
        .scenes-left {
            flex: 1 1 55%;
        }
        .scenes-visual {
            flex: 1 1 45%;
        }
        .scene-item {
            display: flex;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px solid var(--border);
        }
        .scene-item:last-child {
            border-bottom: none;
        }
        .scene-index {
            font-family: var(--font-num);
            font-size: 14px;
            font-weight: 700;
            color: var(--gold);
            background: #FAF3E8;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 4px;
        }
        .scene-item h3 {
            font-size: 18px;
            margin-bottom: 6px;
            color: var(--ink);
        }
        .scene-item p {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .scene-item .scene-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .scenes-visual .visual-card {
            background: var(--ink);
            border-radius: var(--radius-lg);
            padding: 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
            min-height: 400px;
            background-image: url('/assets/images/coverpic/cover-5.webp');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: flex-end;
        }
        .scenes-visual .visual-card .card-overlay {
            background: linear-gradient(to top, rgba(32, 38, 47, .9), transparent);
            padding: 32px 0 0;
            width: 100%;
        }
        .scenes-visual .visual-card .card-tag {
            font-size: 14px;
            color: rgba(255, 255, 255, .85);
            line-height: 1.6;
            margin-bottom: 6px;
        }

        /* Stats Bar */
        .stats-bar {
            background: var(--ink);
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            overflow: hidden;
        }
        .stats-bar::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-brand);
        }
        .stat-item {
            text-align: center;
            padding: 16px 0;
        }
        .stat-num {
            font-family: var(--font-num);
            font-size: 40px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.2;
            position: relative;
            display: inline-block;
        }
        .stat-num::after {
            content: "+";
            color: var(--gold);
            font-size: 24px;
            position: absolute;
            top: 0;
            right: -20px;
        }
        .stat-lbl {
            font-size: 13px;
            color: rgba(255, 255, 255, .65);
            margin-top: 8px;
        }

        /* Testimonial */
        .testimonial-card {
            margin-top: 32px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px;
            display: flex;
            gap: 40px;
            align-items: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-soft);
        }
        .testimonial-avatar {
            width: 88px;
            height: 88px;
            background: var(--primary-light);
            border-radius: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .testimonial-content .quote {
            font-size: 18px;
            line-height: 1.8;
            color: var(--ink-soft);
            margin-bottom: 12px;
            font-weight: 500;
        }
        .testimonial-content .author {
            font-size: 14px;
            color: var(--text-weak);
        }
        .testimonial-content .author span {
            color: var(--gold);
        }

        /* Pricing */
        .pricing-wrap {
            background: var(--bg-main);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 56px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: end;
        }
        .price-table {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-soft);
            text-align: center;
            transition: all .3s ease;
        }
        .price-table:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .price-table.highlight {
            border: 2px solid var(--primary);
            transform: scale(1.05);
            box-shadow: 0 8px 30px rgba(14, 140, 132, .15);
            position: relative;
        }
        .price-table.highlight:hover {
            transform: scale(1.05) translateY(-4px);
        }
        .price-table .badge-popular {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--gold);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 999px;
            white-space: nowrap;
        }
        .price-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .price-value {
            font-family: var(--font-num);
            font-size: 40px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .price-value .unit {
            font-size: 16px;
            font-weight: 400;
            color: var(--text-weak);
        }
        .price-desc {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 24px;
        }
        .price-features {
            text-align: left;
            margin-bottom: 28px;
        }
        .price-features li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-body);
            padding: 6px 0;
        }
        .price-features li i {
            color: var(--primary);
            font-size: 12px;
        }
        .services-link {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 24px;
            justify-content: center;
        }
        .services-link .link-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-body);
            background: #F0F1F3;
            border-radius: 999px;
            padding: 8px 20px;
            transition: all .2s ease;
        }
        .services-link .link-badge:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        /* News List */
        .news-section {
            background: #FFFFFF;
        }
        .news-wrap {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 16px;
            box-shadow: var(--shadow-soft);
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 16px;
            border-radius: 12px;
            transition: background .2s ease, box-shadow .2s ease;
            margin-bottom: 4px;
        }
        .news-item:hover {
            background: var(--primary-light);
        }
        .news-date {
            width: 64px;
            flex-shrink: 0;
            background: var(--bg-main);
            border-radius: 12px;
            text-align: center;
            padding: 8px 0;
            border: 1px solid var(--border);
        }
        .news-date .day {
            font-family: var(--font-num);
            font-size: 22px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.3;
        }
        .news-date .month {
            font-size: 12px;
            color: var(--text-weak);
        }
        .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-tag {
            display: inline-block;
            font-size: 12px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 999px;
            padding: 2px 12px;
            margin-bottom: 4px;
            font-weight: 600;
        }
        .news-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-excerpt {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-link {
            width: 44px;
            height: 44px;
            background: var(--bg-main);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--ink);
            flex-shrink: 0;
            transition: all .2s ease;
        }
        .news-item:hover .news-link {
            background: var(--primary);
            color: #fff;
            transform: translateX(4px);
        }

        /* FAQ */
        .faq-wrap {
            max-width: 880px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow .3s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-soft);
        }
        .faq-item.open {
            box-shadow: var(--shadow-soft);
        }
        .faq-q {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 500;
            color: var(--ink);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color .2s ease;
        }
        .faq-q:hover {
            color: var(--primary);
        }
        .faq-q .faq-icon {
            width: 28px;
            height: 28px;
            background: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
            transition: transform .3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(135deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .3s ease;
            padding: 0 24px;
            background: #F8FAF9;
            border-left: 3px solid var(--primary);
        }
        .faq-item.open .faq-a {
            max-height: 600px;
            padding: 16px 24px;
        }
        .faq-a p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* CTA */
        .cta-section {
            background: var(--ink);
            border-radius: var(--radius-lg);
            margin: 0 48px;
            padding: 72px 64px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(14, 140, 132, .25), transparent 70%);
        }
        .cta-section .cta-title {
            color: #fff;
            font-size: 32px;
            margin-bottom: 12px;
        }
        .cta-section .cta-desc {
            color: rgba(255, 255, 255, .7);
            margin-bottom: 28px;
        }

        /* Footer */
        .footer {
            background: var(--ink);
            margin-top: 80px;
        }
        .footer-top {
            padding: 64px 48px 40px;
            max-width: 1240px;
            margin: 0 auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
        }
        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            line-height: 1.7;
            max-width: 380px;
        }
        .footer-col h4 {
            font-size: 15px;
            color: #FFFFFF;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            transition: color .2s ease;
        }
        .footer-col ul li a:hover {
            color: var(--gold);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 20px 48px;
            max-width: 1240px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .copy-text {
            font-size: 12px;
            color: rgba(255, 255, 255, .45);
        }

        /* Back to top */
        .to-top {
            position: fixed;
            right: 24px;
            bottom: 24px;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(32, 38, 47, .7);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            z-index: 50;
            transition: all .3s ease;
        }
        .to-top:hover {
            background: var(--primary);
            transform: translateY(-4px);
        }

        /* Mobile Nav */
        .mobile-nav {
            display: none;
        }

        @media screen and (max-width: 1199px) {
            :root {
                --sidebar-width: 88px;
            }
            .sidebar-brand {
                flex-direction: column;
                padding: 20px 8px;
                text-align: center;
                gap: 6px;
            }
            .sidebar-brand .brand-text {
                font-size: 11px;
                line-height: 1.4;
                word-break: break-all;
            }
            .sidebar-brand .brand-sub {
                display: none;
            }
            .sidebar-nav {
                padding: 16px 10px;
            }
            .sidebar-nav .nav-label {
                display: none;
            }
            .sidebar-nav ul li a {
                justify-content: center;
                padding: 14px 8px;
                font-size: 13px;
            }
            .sidebar-nav ul li a span {
                display: none;
            }
            .sidebar-nav ul li a i {
                width: 24px;
                font-size: 18px;
            }
            .sidebar-footer {
                padding: 12px 8px;
                text-align: center;
            }
            .sidebar-footer .copyright {
                font-size: 10px;
                word-break: break-all;
            }
            .hero-copy {
                flex: 0 0 100%;
                max-width: 100%;
            }
            .hero-visual {
                display: none;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                padding: 32px 24px;
            }
            .pricing-wrap {
                padding: 40px 24px;
                grid-template-columns: 1fr;
            }
            .price-table.highlight {
                transform: none;
            }
            .price-table.highlight:hover {
                transform: translateY(-4px);
            }
        }

        @media screen and (max-width: 900px) {
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
                transition: transform .3s ease;
                box-shadow: 8px 0 30px rgba(0, 0, 0, .15);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-brand {
                flex-direction: row;
                padding: 20px 24px;
                text-align: left;
            }
            .sidebar-brand .brand-text {
                font-size: 18px;
                word-break: normal;
            }
            .sidebar-brand .brand-sub {
                display: block;
            }
            .sidebar-nav {
                padding: 20px 16px;
            }
            .sidebar-nav .nav-label {
                display: block;
            }
            .sidebar-nav ul li a {
                justify-content: flex-start;
                padding: 14px;
                font-size: 15px;
            }
            .sidebar-nav ul li a span {
                display: inline;
            }
            .sidebar-nav ul li a i {
                width: 20px;
                font-size: 15px;
            }
            .sidebar-footer {
                padding: 16px 24px;
                text-align: left;
            }
            .main-area {
                margin-left: 0;
            }
            .mobile-nav {
                display: flex;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                height: 60px;
                background: #fff;
                z-index: 100;
                align-items: center;
                justify-content: space-between;
                padding: 0 20px;
                box-shadow: var(--shadow-soft);
            }
            .mobile-nav .brand-text {
                font-size: 16px;
                font-weight: 700;
                color: var(--ink);
            }
            .mobile-nav .hamburger {
                width: 40px;
                height: 40px;
                border: none;
                background: var(--bg-main);
                border-radius: 10px;
                display: flex;
                align-items: center;
                justify-content: center;
                font-size: 18px;
                color: var(--ink);
                cursor: pointer;
                transition: all .2s ease;
            }
            .mobile-nav .hamburger:hover {
                background: var(--primary-light);
                color: var(--primary);
            }
            .mobile-nav .hamburger.active {
                background: var(--primary);
                color: #fff;
            }
            .mobile-overlay {
                display: none;
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(32, 38, 47, .4);
                z-index: 90;
            }
            .mobile-overlay.active {
                display: block;
            }
            .main-content {
                padding-top: 60px;
            }
            .hero-section {
                padding: 48px 0 40px;
            }
            .hero-copy h1 {
                font-size: 30px;
            }
            .section-block {
                padding: 64px 0;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .scenes-wrap {
                flex-direction: column;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
            }
            .cta-section {
                margin: 0 20px;
                padding: 48px 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .container-custom {
                padding: 0 20px;
            }
            .testimonial-card {
                flex-direction: column;
                text-align: center;
            }
            .news-item {
                flex-wrap: wrap;
            }
            .news-date {
                width: 56px;
            }
        }

        @media screen and (max-width: 640px) {
            .hero-copy h1 {
                font-size: 26px;
            }
            .hero-copy .hero-desc {
                font-size: 14px;
            }
            .btn-primary,
            .btn-secondary,
            .btn-light {
                padding: 12px 24px;
                font-size: 14px;
            }
            .hero-badges {
                flex-direction: column;
            }
            .hero-badge {
                justify-content: center;
            }
            .section-title {
                font-size: 24px;
            }
            .section-desc {
                font-size: 14px;
            }
            .feature-card {
                padding: 28px 24px;
            }
            .stats-bar {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stat-num {
                font-size: 32px;
            }
            .testimonial-card {
                padding: 32px 20px;
            }
            .testimonial-content .quote {
                font-size: 15px;
            }
            .pricing-wrap {
                padding: 24px 16px;
            }
            .price-table {
                padding: 24px 20px;
            }
            .faq-q {
                padding: 16px 16px;
                font-size: 14px;
            }
            .faq-a {
                padding: 0 16px;
            }
            .faq-item.open .faq-a {
                padding: 12px 16px;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section .cta-title {
                font-size: 24px;
            }
            .btn-primary {
                width: 100%;
                justify-content: center;
            }
            .footer-top {
                padding: 40px 20px;
            }
            .footer-bottom {
                padding: 16px 20px;
                flex-direction: column;
                text-align: center;
            }
            .news-item {
                padding: 16px 12px;
            }
            .news-excerpt {
                display: none;
            }
            .news-title {
                font-size: 15px;
            }
        }

/* roulang page: category1 */
:root {
    --primary: #0E8C84;
    --primary-dark: #0F7B77;
    --primary-light: #F0FAF9;
    --accent: #C9964A;
    --dark: #20262F;
    --dark-soft: #2A2F36;
    --text: #2A2F36;
    --text-weak: #6B7280;
    --bg: #F6F7F9;
    --card-bg: #FFFFFF;
    --border: #E9ECEF;
    --shadow: 0 2px 8px rgba(32,38,47,0.06), 0 8px 24px rgba(32,38,47,0.08);
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 8px;
    --transition: all 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "HarmonicOS Sans", "Microsoft YaHei", "Inter", "Arial", sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.75;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: var(--primary-dark);
}

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

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

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

ul {
    list-style: none;
}

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

.site-wrapper {
    display: flex;
    min-height: 100vh;
}

.sidebar-nav {
    width: 232px;
    min-width: 232px;
    background: #FFFFFF;
    border-right: 1px solid var(--border);
    padding: 0 0 32px;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 50;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: #D0D5DD;
    border-radius: 999px;
}

.sidebar-brand {
    padding: 28px 24px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid #F2F4F6;
}

.sidebar-logo-mark {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 16px;
    flex-shrink: 0;
}

.sidebar-brand-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.3;
}

.sidebar-nav .nav-label {
    padding: 22px 24px 8px;
    font-size: 12px;
    color: #9AA1AA;
    font-weight: 500;
    letter-spacing: 0.06em;
}

.sidebar-nav ul {
    margin: 0;
}

.sidebar-nav ul li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    margin: 0 12px;
    border-radius: 10px;
    color: #4A5560;
    font-size: 15px;
    border-left: 3px solid transparent;
    transition: var(--transition);
}

.sidebar-nav ul li a i {
    width: 20px;
    text-align: center;
    color: #9AA1AA;
    transition: color 0.2s ease;
}

.sidebar-nav ul li a:hover {
    background: #F6F8F9;
    color: var(--primary);
}

.sidebar-nav ul li a:hover i {
    color: var(--primary);
}

.sidebar-nav ul li a.active {
    background: var(--primary-light);
    color: var(--primary);
    border-left-color: var(--primary);
}

.sidebar-nav ul li a.active i {
    color: var(--primary);
}

.sidebar-nav ul li a:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.sidebar-bottom {
    margin-top: auto;
    padding: 20px 24px;
    font-size: 12px;
    color: #9AA1AA;
    line-height: 1.6;
    border-top: 1px solid #F2F4F6;
}

.main-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.mobile-header {
    display: none;
    position: sticky;
    top: 0;
    width: 100%;
    height: 60px;
    background: #FFFFFF;
    border-bottom: 1px solid var(--border);
    z-index: 100;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.mobile-logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 8px;
}

.mobile-menu-btn {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark);
    font-size: 18px;
    transition: background 0.2s ease;
}

.mobile-menu-btn:hover {
    background: #F2F4F6;
}

.mobile-menu-panel {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: #FFFFFF;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(32,38,47,0.08);
    padding: 16px 20px 24px;
    z-index: 99;
}

.mobile-menu-panel.open {
    display: block;
}

.mobile-menu-panel ul li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 16px;
    border-radius: 10px;
    color: var(--text);
    font-size: 15px;
    font-weight: 500;
}

.mobile-menu-panel ul li a i {
    width: 20px;
    text-align: center;
    color: #9AA1AA;
}

.mobile-menu-panel ul li a.active {
    background: var(--primary-light);
    color: var(--primary);
}

.mobile-menu-panel ul li a.active i {
    color: var(--primary);
}

.mobile-menu-panel .mobile-menu-label {
    font-size: 12px;
    color: #9AA1AA;
    padding: 12px 16px 6px;
    letter-spacing: 0.04em;
}

/* ===== 横幅 ===== */
.category-banner {
    background: linear-gradient(140deg, #FFFFFF 20%, #E5F5F3 65%, #F0E9DC 100%);
    padding: 72px 0 56px;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.category-banner .container {
    display: flex;
    align-items: center;
    gap: 48px;
    position: relative;
    z-index: 2;
}

.banner-left {
    flex: 1.15;
}

.banner-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(14, 140, 132, 0.12);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 20px;
}

.banner-badge i {
    font-size: 12px;
}

.category-banner h1 {
    font-size: 42px;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.25;
    margin-bottom: 16px;
}

.category-banner h1 span.primary-text {
    color: var(--primary);
}

.banner-desc {
    font-size: 16px;
    color: #4A5560;
    line-height: 1.85;
    max-width: 600px;
    margin-bottom: 28px;
}

.banner-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 130%);
    color: #FFFFFF;
    font-size: 15px;
    font-weight: 600;
    padding: 13px 28px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 14px rgba(14,140,132,0.25);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--dark) 130%);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(14,140,132,0.3);
    color: #FFFFFF;
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(14,140,132,0.2);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--dark);
    font-size: 15px;
    font-weight: 500;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    border: 1px solid #D7DCE0;
    background: rgba(255,255,255,0.6);
    backdrop-filter: blur(4px);
    transition: var(--transition);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #FFFFFF;
}

.banner-right {
    flex: 0.85;
    position: relative;
}

.banner-visual {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(32,38,47,0.14);
    border: 4px solid #FFFFFF;
    position: relative;
}

.banner-visual img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.banner-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(32,38,47,0.35));
    pointer-events: none;
}

.banner-trust {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-top: 28px;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: #4A5560;
    background: rgba(255,255,255,0.7);
    padding: 7px 14px;
    border-radius: 999px;
    backdrop-filter: blur(4px);
}

.trust-item i {
    color: var(--primary);
}

/* ===== 快速索引 ===== */
.quick-index-section {
    padding: 88px 0;
}

.section-header {
    margin-bottom: 44px;
}

.section-eyebrow {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.3;
    margin-bottom: 12px;
}

.section-header p {
    max-width: 720px;
    color: var(--text-weak);
    font-size: 15px;
    line-height: 1.7;
}

.quick-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.quick-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.quick-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--primary-dark));
    opacity: 0;
    transition: opacity 0.25s ease;
}

.quick-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.quick-card:hover::before {
    opacity: 1;
}

.quick-card:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(32,38,47,0.08);
}

.quick-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 19px;
    margin-bottom: 18px;
}

.quick-card h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.quick-card p {
    font-size: 14px;
    color: var(--text-weak);
    line-height: 1.65;
    margin-bottom: 14px;
}

.quick-card-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s ease;
}

.quick-card-link:hover {
    gap: 10px;
}

.quick-card-link:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== 场景指引 ===== */
.scene-section {
    background: #FFFFFF;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 88px 0;
}

.scene-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.scene-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.scene-item:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.scene-img {
    height: 180px;
    overflow: hidden;
}

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

.scene-item:hover .scene-img img {
    transform: scale(1.03);
}

.scene-body {
    padding: 26px 24px 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.scene-tag {
    display: inline-flex;
    align-self: flex-start;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 999px;
    margin-bottom: 12px;
}

.scene-body h3 {
    font-size: 19px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.scene-body p {
    font-size: 14px;
    color: var(--text-weak);
    line-height: 1.7;
    flex: 1;
}

.scene-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-top: 16px;
    transition: gap 0.2s ease;
}

.scene-link:hover {
    gap: 11px;
    color: var(--primary-dark);
}

.scene-link:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== 分类内容价值 ===== */
.value-section {
    padding: 88px 0;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.value-item {
    text-align: center;
    padding: 32px 20px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.value-item:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.value-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary-light), #E0F2EF);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin: 0 auto 16px;
}

.value-item h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.value-item p {
    font-size: 13px;
    color: var(--text-weak);
    line-height: 1.6;
}

/* ===== 最新信息区块（静态标题 + CMS占位） ===== */
.latest-section {
    padding: 88px 0;
    background: #FFFFFF;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.latest-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.latest-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 24px;
    transition: var(--transition);
}

.latest-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.latest-date {
    width: 70px;
    min-width: 70px;
    text-align: center;
    background: var(--bg);
    border-radius: 12px;
    padding: 10px 8px;
}

.latest-date .day {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.2;
}

.latest-date .month {
    font-size: 12px;
    color: var(--text-weak);
    font-weight: 500;
}

.latest-info {
    flex: 1;
    min-width: 0;
}

.latest-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 6px;
}

.tag-item {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
}

.tag-item-warm {
    background: #FDF6EC;
    color: var(--accent);
}

.latest-info h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.latest-info p {
    font-size: 14px;
    color: var(--text-weak);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.latest-arrow {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: 50%;
    background: var(--bg);
    color: var(--dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    border: 1px solid transparent;
    transition: var(--transition);
}

.latest-card:hover .latest-arrow {
    background: var(--primary);
    color: #FFFFFF;
    border-color: var(--primary);
}

.latest-card:active .latest-arrow {
    transform: scale(0.9);
}

.empty-state {
    text-align: center;
    padding: 48px 24px;
    border: 2px dashed #D7DCE0;
    border-radius: var(--radius-lg);
    background: var(--bg);
}

.empty-state i {
    font-size: 40px;
    color: #C0C8D0;
    margin-bottom: 14px;
}

.empty-state p {
    font-size: 15px;
    color: var(--text-weak);
}

/* ===== FAQ ===== */
.faq-section {
    padding: 88px 0;
}

.faq-list {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow 0.25s ease;
}

.faq-item:hover {
    box-shadow: 0 2px 12px rgba(32,38,47,0.05);
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-size: 16px;
    font-weight: 500;
    color: var(--dark);
    text-align: left;
    cursor: pointer;
    transition: background 0.2s ease;
}

.faq-question:hover {
    background: #FAFBFC;
}

.faq-question:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: -2px;
}

.faq-icon {
    width: 28px;
    height: 28px;
    min-width: 28px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: var(--primary);
    color: #FFFFFF;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
    max-height: 400px;
    padding: 0 24px 20px;
}

.faq-answer-inner {
    background: #F8FAF9;
    border-left: 3px solid var(--primary);
    border-radius: 0 8px 8px 0;
    padding: 16px 18px;
    font-size: 14px;
    color: #4A5560;
    line-height: 1.75;
}

/* ===== CTA ===== */
.cta-section {
    padding: 72px 0;
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.cta-inner {
    background: linear-gradient(140deg, #2A2F36 0%, var(--dark) 40%);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 24px;
    padding: 56px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    position: relative;
    z-index: 2;
}

.cta-inner::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(14,140,132,0.25) 0%, transparent 70%);
    pointer-events: none;
}

.cta-text h2 {
    font-size: 30px;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 12px;
    line-height: 1.3;
}

.cta-text p {
    font-size: 15px;
    color: rgba(255,255,255,0.75);
    line-height: 1.7;
    max-width: 600px;
}

.cta-actions {
    display: flex;
    gap: 14px;
    flex-shrink: 0;
    flex-wrap: wrap;
}

.cta-actions .btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #0B6E68 100%);
    box-shadow: 0 4px 16px rgba(14,140,132,0.35);
}

.cta-actions .btn-secondary {
    border-color: rgba(255,255,255,0.2);
    color: #FFFFFF;
    background: rgba(255,255,255,0.06);
    backdrop-filter: none;
}

.cta-actions .btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(255,255,255,0.1);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--dark);
    color: rgba(255,255,255,0.7);
    padding: 56px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 36px;
}

.footer-brand {
    font-size: 18px;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 12px;
}

.footer-desc {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
    max-width: 420px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 14px;
    letter-spacing: 0.03em;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
    transition: color 0.2s ease;
}

.footer-col ul li a:hover {
    color: #FFFFFF;
}

.footer-col ul li a:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.12);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.footer-bottom .copy-text {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: rgba(255,255,255,0.45);
}

.footer-bottom .copy-text a {
    color: rgba(255,255,255,0.45);
    transition: color 0.2s ease;
}

.footer-bottom .copy-text a:hover {
    color: rgba(255,255,255,0.8);
}

/* ===== 返回顶部 ===== */
.back-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(32,38,47,0.55);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    z-index: 80;
    border: none;
    cursor: pointer;
    transition: background 0.25s ease, transform 0.25s ease, opacity 0.25s ease;
    opacity: 0;
    pointer-events: none;
}

.back-top.visible {
    opacity: 1;
    pointer-events: auto;
}

.back-top:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.back-top:active {
    transform: translateY(0);
    background: var(--primary-dark);
}

.back-top:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ===== 面包屑 ===== */
.breadcrumb-wrap {
    padding: 18px 0;
    border-bottom: 1px solid var(--border);
    background: #FFFFFF;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-weak);
}

.breadcrumb-list a {
    color: var(--text-weak);
    transition: color 0.2s ease;
}

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

.breadcrumb-list .sep {
    color: #C0C8D0;
}

.breadcrumb-list .cur {
    color: var(--dark);
    font-weight: 500;
}

/* ===== 响应式 ===== */
@media screen and (max-width: 1199px) {
    .sidebar-nav {
        width: 88px;
        min-width: 88px;
    }

    .sidebar-brand {
        flex-direction: column;
        padding: 20px 8px;
        text-align: center;
    }

    .sidebar-brand-text {
        font-size: 12px;
        line-height: 1.4;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .sidebar-nav ul li a {
        justify-content: center;
        padding: 12px 8px;
        margin: 0 8px;
        gap: 0;
    }

    .sidebar-nav ul li a span,
    .sidebar-nav ul li a .mobile-hide {
        display: none;
    }

    .sidebar-nav ul li a i {
        font-size: 18px;
        margin: 0;
    }

    .sidebar-nav .nav-label {
        text-align: center;
        padding: 20px 8px 6px;
        font-size: 10px;
    }

    .sidebar-bottom {
        padding: 12px 8px;
        text-align: center;
        font-size: 10px;
    }

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

@media screen and (max-width: 900px) {
    .site-wrapper {
        flex-direction: column;
    }

    .sidebar-nav {
        display: none;
    }

    .mobile-header {
        display: flex;
    }

    .main-content {
        padding-top: 0;
    }

    .breadcrumb-wrap {
        display: none;
    }

    .category-banner {
        padding: 56px 0 44px;
    }

    .category-banner h1 {
        font-size: 32px;
    }

    .banner-visual img {
        height: 220px;
    }

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

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

    .scene-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .cta-inner {
        flex-direction: column;
        align-items: flex-start;
        padding: 40px 28px;
    }

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

    .category-banner .container {
        flex-direction: column;
        gap: 24px;
    }

    .banner-right {
        width: 100%;
        max-width: 460px;
    }

    .banner-trust {
        justify-content: center;
    }
}

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

    .category-banner {
        padding: 44px 0 36px;
    }

    .category-banner h1 {
        font-size: 27px;
    }

    .banner-desc {
        font-size: 14px;
    }

    .banner-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .banner-actions .btn-primary,
    .banner-actions .btn-secondary {
        justify-content: center;
    }

    .banner-trust {
        gap: 10px;
        justify-content: flex-start;
    }

    .trust-item {
        padding: 6px 10px;
        font-size: 12px;
    }

    .quick-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .quick-card {
        padding: 22px 20px;
    }

    .value-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .value-item {
        padding: 28px 20px;
    }

    .section-header h2 {
        font-size: 24px;
    }

    .latest-card {
        padding: 18px;
        gap: 14px;
    }

    .latest-date {
        width: 56px;
        min-width: 56px;
        padding: 8px 6px;
    }

    .latest-date .day {
        font-size: 22px;
    }

    .latest-info h3 {
        font-size: 15px;
    }

    .latest-info p {
        font-size: 13px;
    }

    .latest-arrow {
        width: 40px;
        height: 40px;
        min-width: 40px;
        font-size: 14px;
    }

    .faq-question {
        padding: 16px 16px;
        font-size: 14px;
    }

    .faq-item.open .faq-answer {
        padding: 0 16px 16px;
    }

    .cta-inner {
        padding: 32px 20px;
    }

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

    .cta-actions {
        width: 100%;
    }

    .cta-actions .btn-primary,
    .cta-actions .btn-secondary {
        width: 100%;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .back-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 900px) and (min-width: 641px) {
    .banner-visual img {
        height: 240px;
    }
}

/* ===== A11Y ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        scroll-behavior: auto !important;
    }
}

::selection {
    background: rgba(14, 140, 132, 0.12);
    color: var(--dark);
}

/* roulang page: article */
:root {
    --primary: #0E8C84;
    --primary-dark: #0F7B77;
    --primary-light: #F0FAF9;
    --accent: #C9964A;
    --ink: #20262F;
    --text: #2A2F36;
    --text-weak: #6B7280;
    --border: #E9ECEF;
    --bg: #F6F7F9;
    --card-bg: #FFFFFF;
    --sidebar-width: 232px;
    --radius: 16px;
    --radius-sm: 8px;
    --shadow: 0 2px 8px rgba(32,38,47,0.06), 0 8px 24px rgba(32,38,47,0.08);
    --font: "PingFang SC", "HarmonicOS Sans", "Microsoft YaHei", -apple-system, "Inter", Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: var(--font);
    color: var(--text);
    background: var(--bg);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { padding-left: 1.4em; }
button { font-family: var(--font); }

.site-shell { display: flex; min-height: 100vh; align-items: stretch; }

/* ===== 左侧竖向导航 ===== */
.sidebar {
    width: var(--sidebar-width);
    flex: 0 0 var(--sidebar-width);
    position: sticky;
    top: 0;
    height: 100vh;
    background: #FFFFFF;
    border-right: 1px solid var(--border);
    padding: 24px 16px 20px;
    display: flex;
    flex-direction: column;
    z-index: 200;
    overflow-y: auto;
}
.brand-area {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 8px 20px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 20px;
}
.brand-logo {
    width: 40px; height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--ink));
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px;
    flex: 0 0 40px;
}
.brand-text { font-size: 18px; font-weight: 700; color: var(--ink); line-height: 1.3; }
.brand-sub { font-size: 12px; color: var(--text-weak); margin-top: 2px; }
.sidebar-nav { flex: 1; }
.nav-label {
    font-size: 12px;
    color: var(--text-weak);
    letter-spacing: .08em;
    padding: 0 8px;
    margin-bottom: 8px;
    font-weight: 600;
}
.sidebar-nav ul { list-style: none; margin: 0; padding: 0; }
.sidebar-nav li { margin-bottom: 4px; }
.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    color: #4A5560;
    font-size: 15px;
    font-weight: 500;
    position: relative;
    transition: background .2s, color .2s;
}
.sidebar-nav a i { width: 18px; text-align: center; font-size: 15px; color: #98A2B3; transition: color .2s; }
.sidebar-nav a:hover { background: #F6F8F9; color: var(--ink); }
.sidebar-nav a.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}
.sidebar-nav a.active::before {
    content: "";
    position: absolute;
    left: 0; top: 50%;
    transform: translateY(-50%);
    width: 3px; height: 18px;
    border-radius: 0 3px 3px 0;
    background: var(--primary);
}
.sidebar-nav a.active i { color: var(--primary); }
.sidebar-foot {
    padding: 16px 8px 4px;
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-weak);
    line-height: 1.7;
}
.sidebar-foot p { margin: 0; }

/* ===== 主内容区 ===== */
.main-wrap { flex: 1; min-width: 0; display: flex; flex-direction: column; }

/* ===== 移动端顶部导航 ===== */
.mobile-header {
    display: none;
    position: relative;
    height: 60px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 300;
}
.mobile-brand {
    font-size: 17px; font-weight: 700; color: var(--ink);
    display: flex; align-items: center; gap: 8px;
}
.mobile-brand i { color: var(--primary); }
.mobile-toggle {
    width: 40px; height: 40px;
    border: none; background: none;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 5px; cursor: pointer;
    border-radius: 8px;
}
.mobile-toggle span { width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s; }
.mobile-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-toggle.is-open span:nth-child(2) { opacity: 0; }
.mobile-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-panel {
    display: none;
    position: absolute;
    top: 60px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 12px 20px 20px;
    box-shadow: var(--shadow);
}
.mobile-panel.open { display: block; }
.mobile-panel ul { list-style: none; margin: 0; padding: 0; }
.mobile-panel li a {
    display: block;
    padding: 14px 8px;
    border-radius: 8px;
    font-size: 15px;
    color: var(--ink);
    font-weight: 500;
}
.mobile-panel li a.active { background: var(--primary-light); color: var(--primary); }

/* ===== 文章横幅 ===== */
.article-banner {
    position: relative;
    background: linear-gradient(135deg, #E6F3F2 0%, #F6F9F8 55%, #FDFDFD 100%);
    border-bottom: 1px solid rgba(14,140,132,.08);
    padding: 44px 0 48px;
    overflow: hidden;
}
.article-banner::after {
    content: "";
    position: absolute;
    top: -80px; right: -40px;
    width: 280px; height: 280px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(14,140,132,.09), transparent 70%);
    pointer-events: none;
}
.banner-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 48px;
    position: relative;
    z-index: 1;
}
.breadcrumb {
    font-size: 14px;
    color: var(--text-weak);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-weak); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: #C0C7CD; }
.breadcrumb .current { color: var(--ink); font-weight: 500; max-width: 360px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.article-cat {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(14,140,132,.08);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 14px;
}
.article-title {
    font-size: 36px;
    line-height: 1.3;
    font-weight: 700;
    color: var(--ink);
    margin: 0 0 14px;
    max-width: 860px;
}
.article-meta-line {
    display: flex;
    align-items: center;
    gap: 18px;
    font-size: 13px;
    color: var(--text-weak);
    flex-wrap: wrap;
}
.article-meta-line i { margin-right: 5px; color: var(--primary); }

/* ===== 主内容布局 ===== */
.page-main {
    max-width: 1240px;
    width: 100%;
    margin: 0 auto;
    padding: 40px 48px 80px;
    flex: 1;
}
.article-column { margin-top: 32px; }
.article-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 40px 44px;
}

/* ===== 正文排版 ===== */
.article-content { font-size: 16px; color: var(--text); line-height: 1.85; word-wrap: break-word; }
.article-content p { margin: 0 0 24px; }
.article-content h2 { font-size: 26px; font-weight: 700; margin: 40px 0 16px; color: var(--ink); padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.article-content h3 { font-size: 20px; font-weight: 600; margin: 32px 0 12px; color: var(--ink); }
.article-content h4 { font-size: 18px; font-weight: 600; margin: 28px 0 10px; color: var(--ink); }
.article-content img { width: 100%; border-radius: var(--radius); margin: 24px 0; }
.article-content ul, .article-content ol { margin: 0 0 24px; padding-left: 1.5em; }
.article-content li { margin-bottom: 8px; }
.article-content blockquote {
    border-left: 4px solid var(--primary);
    background: var(--primary-light);
    padding: 16px 20px;
    border-radius: 0 12px 12px 0;
    margin: 0 0 24px;
    color: #3E4A55;
}
.article-content a { color: var(--primary); font-weight: 500; border-bottom: 1px solid rgba(14,140,132,.3); }
.article-content table { width: 100%; border-collapse: collapse; margin: 0 0 24px; }
.article-content th, .article-content td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
.article-content th { background: var(--bg); font-weight: 600; color: var(--ink); }

/* ===== 标签区 ===== */
.tag-area {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.tag-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 13px;
    color: var(--text);
    transition: all .2s;
}
.tag-item:hover { background: var(--primary-light); border-color: rgba(14,140,132,.3); color: var(--primary); }

/* ===== 相关推荐 ===== */
.related-section { margin-top: 64px; }
.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}
.section-head h2 { font-size: 26px; font-weight: 700; color: var(--ink); margin: 0; }
.section-more { font-size: 14px; font-weight: 500; color: var(--primary); }
.related-card {
    display: block;
    background: #fff;
    border-radius: 16px;
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: 0 1px 4px rgba(32,38,47,.04);
    transition: box-shadow .25s, transform .25s;
    height: 100%;
}
.related-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.related-card img { width: 100%; height: 170px; object-fit: cover; }
.related-body { padding: 20px; }
.related-tag {
    font-size: 12px;
    color: var(--primary);
    background: var(--primary-light);
    padding: 3px 10px;
    border-radius: 999px;
    font-weight: 600;
    display: inline-block;
}
.related-body h3 { font-size: 17px; font-weight: 600; color: var(--ink); margin: 12px 0 8px; }
.related-body p { font-size: 14px; color: var(--text-weak); line-height: 1.6; margin: 0; }

/* ===== CTA ===== */
.cta-zone {
    margin-top: 56px;
    background: linear-gradient(135deg, var(--ink) 0%, #2C3A45 100%);
    border-radius: 20px;
    padding: 48px 40px;
    text-align: center;
    color: #fff;
}
.cta-zone h2 { font-size: 28px; font-weight: 700; margin: 0 0 12px; }
.cta-zone p { color: rgba(255,255,255,.68); font-size: 16px; margin: 0 auto 28px; max-width: 520px; }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all .25s;
    text-decoration: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), #17A398);
    color: #fff !important;
    box-shadow: 0 6px 18px rgba(14,140,132,.25);
}
.btn-primary:hover { box-shadow: 0 8px 24px rgba(14,140,132,.35); transform: translateY(-2px); color: #fff !important; }
.btn-ghost {
    background: transparent;
    border-color: rgba(14,140,132,.4);
    color: var(--primary) !important;
}
.btn-ghost:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary) !important; }
.btn-lg { padding: 14px 34px; font-size: 16px; }
.btn:active { transform: translateY(0); }

/* ===== FAQ ===== */
.faq-section { margin-top: 64px; }
.faq-section > h2 { font-size: 26px; font-weight: 700; color: var(--ink); text-align: center; margin-bottom: 28px; }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: border-color .2s, box-shadow .2s;
}
.faq-item summary {
    cursor: pointer;
    padding: 18px 20px;
    font-size: 16px;
    font-weight: 500;
    color: var(--ink);
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: "+";
    font-size: 20px;
    line-height: 1;
    color: var(--primary);
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 28px;
    transition: background .25s, color .25s, transform .25s;
}
.faq-item[open] summary::after { content: "−"; background: var(--primary); color: #fff; }
.faq-item[open] { border-color: rgba(14,140,132,.25); box-shadow: 0 4px 16px rgba(14,140,132,.08); }
.faq-answer {
    margin: 0 16px 16px;
    padding: 14px 16px;
    background: #F8FAF9;
    border-left: 3px solid var(--primary);
    border-radius: 0 10px 10px 0;
    font-size: 15px;
    color: var(--text-weak);
    line-height: 1.7;
}

/* ===== 未找到 ===== */
.not-found { text-align: center; padding: 60px 20px; }
.not-found i { font-size: 48px; color: #C0C7CD; margin-bottom: 16px; display: block; }
.not-found p { font-size: 18px; color: var(--text-weak); margin-bottom: 24px; }

/* ===== 页脚 ===== */
.footer {
    background: var(--ink);
    color: rgba(255,255,255,.7);
    margin-top: 80px;
    padding: 56px 48px 28px;
}
.footer-top { max-width: 1144px; margin: 0 auto; }
.footer-grid {
    display: grid;
    grid-template-columns: 2.2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 36px;
    border-bottom: 1px solid rgba(255,255,255,.12);
}
.footer-brand { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.footer-brand i { color: var(--primary); }
.footer-desc { font-size: 14px; color: rgba(255,255,255,.62); line-height: 1.75; margin: 0; max-width: 420px; }
.footer-col h4 { font-size: 15px; color: #fff; font-weight: 600; margin-bottom: 14px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { font-size: 14px; color: rgba(255,255,255,.62); }
.footer-col a:hover { color: #fff; }
.footer-bottom {
    max-width: 1144px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding-top: 22px;
    font-size: 12px;
    color: rgba(255,255,255,.45);
    flex-wrap: wrap;
}
.copy-text a { color: inherit; }

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    right: 24px; bottom: 24px;
    width: 42px; height: 42px;
    border-radius: 10px;
    border: 1px solid #E6E8EB;
    background: rgba(255,255,255,.9);
    color: var(--ink);
    cursor: pointer;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    transition: all .3s;
    z-index: 500;
}
.back-to-top:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.back-to-top.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }

/* ===== 焦点状态 ===== */
a:focus-visible, button:focus-visible, summary:focus-visible {
    outline: 3px solid rgba(14,140,132,.4);
    outline-offset: 2px;
}

/* ===== 响应式 ===== */
@media (min-width: 901px) and (max-width: 1199px) {
    .sidebar { width: 88px; flex-basis: 88px; padding: 24px 10px; }
    .brand-text, .brand-sub, .nav-label, .sidebar-nav a span, .sidebar-foot { display: none; }
    .brand-area { justify-content: center; padding: 8px 0 20px; }
    .brand-logo { width: 40px; height: 40px; }
    .sidebar-nav a { justify-content: center; padding: 12px; }
    .sidebar-nav a.active::before { left: -10px; }
    .page-main { padding: 32px 32px 64px; }
    .banner-inner { padding: 0 32px; }
    .footer { padding: 48px 32px 24px; }
}
@media (max-width: 900px) {
    .site-shell { display: block; }
    .sidebar { display: none; }
    .mobile-header { display: flex; }
    .page-main { padding: 28px 20px 56px; }
    .banner-inner { padding: 0 20px; }
    .article-banner { padding: 32px 0 36px; }
    .article-title { font-size: 30px; }
    .footer { padding: 40px 20px 24px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .back-to-top { right: 16px; bottom: 16px; }
}
@media (max-width: 640px) {
    .article-card { padding: 24px 18px; }
    .article-title { font-size: 26px; }
    .article-column { margin-top: 20px; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
    .cta-zone { padding: 32px 20px; }
    .cta-zone h2 { font-size: 22px; }
    .related-card img { height: 140px; }
    .section-head { flex-direction: column; align-items: flex-start; gap: 8px; }
    .article-content h2 { font-size: 22px; }
    .article-content h3 { font-size: 18px; }
}