/* roulang page: index */
:root {
            --primary: #0E6E5C;
            --primary-dark: #0A5347;
            --primary-light: #E8F3F0;
            --gold: #DFA64A;
            --gold-light: #F3E3C2;
            --bg: #F7F5F0;
            --white: #FFFFFF;
            --ink: #202B29;
            --ink-soft: #4A5A56;
            --line: #E4E0D5;
            --dark-footer: #1B2926;
            --radius-card: 16px;
            --radius-btn: 8px;
            --shadow-1: 0 2px 8px rgba(32,43,41,0.04), 0 12px 32px rgba(32,43,41,0.08);
            --shadow-2: 0 4px 16px rgba(32,43,41,0.08), 0 20px 48px rgba(32,43,41,0.12);
            --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.8;
            color: var(--ink);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1140px;
        }
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 500;
            transition: all 0.25s ease;
        }
        .btn-primary {
            background: var(--primary);
            border: 1.5px solid var(--primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(14, 110, 92, 0.25);
        }
        .btn-outline-primary {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline-primary:hover {
            background: rgba(14, 110, 92, 0.1);
            color: var(--primary-dark);
        }
        .btn-gold {
            background: var(--gold);
            border: 1.5px solid var(--gold);
            color: var(--ink);
        }
        .btn-gold:hover {
            background: #d39a36;
            border-color: #d39a36;
            color: var(--ink);
        }
        .btn:focus-visible,
        .icon-btn:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 2px;
        }
        .section {
            padding: 96px 0;
        }
        .section-head {
            max-width: 680px;
            margin-bottom: 48px;
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.12em;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .section-title {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 2rem;
            line-height: 1.25;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--ink-soft);
            margin-bottom: 0;
        }
        .text-link {
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.25s ease;
        }
        .text-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(247, 245, 240, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(228, 224, 213, 0.8);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(247, 245, 240, 0.98);
            box-shadow: 0 2px 16px rgba(32, 43, 41, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
        }
        .header-left,
        .header-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--ink);
            text-decoration: none;
        }
        .brand-icon {
            width: 34px;
            height: 34px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
        }
        .brand-text {
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            gap: 4px;
        }
        .nav-link {
            display: inline-block;
            padding: 7px 14px;
            border-radius: 8px;
            color: var(--ink-soft);
            font-size: 15px;
            text-decoration: none;
            transition: all 0.2s ease;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(14, 110, 92, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(14, 110, 92, 0.08);
        }
        .icon-btn {
            width: 38px;
            height: 38px;
            border: none;
            border-radius: 10px;
            background: transparent;
            color: var(--ink);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .icon-btn:hover {
            background: rgba(14, 110, 92, 0.08);
            color: var(--primary);
        }
        .search-toggle.active {
            background: var(--primary-light);
            color: var(--primary);
        }
        .menu-toggle {
            flex-direction: column;
            gap: 5px;
        }
        .menu-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: currentColor;
            border-radius: 2px;
        }
        .search-panel {
            max-height: 0;
            overflow: hidden;
            background: var(--bg);
            border-top: 1px solid transparent;
            transition: max-height 0.35s ease, border-color 0.35s ease;
        }
        .search-panel.open {
            max-height: 120px;
            border-top-color: var(--line);
        }
        .search-panel-inner {
            display: flex;
            gap: 12px;
            padding: 16px 12px;
            align-items: center;
        }
        .search-panel .form-control {
            border-radius: 8px;
            border: 1px solid var(--line);
            padding: 10px 16px;
            background: #fff;
        }
        .search-panel .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(14, 110, 92, 0.08);
        }
        .mobile-nav {
            max-height: 0;
            overflow: hidden;
            background: var(--bg);
            border-top: 1px solid transparent;
            padding: 0 24px;
            transition: max-height 0.4s ease, padding 0.4s ease, border-color 0.4s ease;
        }
        .mobile-nav.open {
            max-height: 420px;
            padding: 18px 24px 24px;
            border-top-color: var(--line);
        }
        .mobile-link {
            display: block;
            padding: 12px 4px;
            border-bottom: 1px solid rgba(228, 224, 213, 0.7);
            color: var(--ink);
            font-size: 16px;
            text-decoration: none;
            transition: all 0.2s ease;
            position: relative;
        }
        .mobile-link::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            border-radius: 3px;
            background: linear-gradient(180deg, var(--primary), var(--gold));
            opacity: 0;
            transition: opacity 0.25s ease;
        }
        .mobile-link:hover,
        .mobile-link.active {
            color: var(--primary);
            padding-left: 14px;
        }
        .mobile-link:hover::before,
        .mobile-link.active::before {
            opacity: 1;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 640px;
            display: flex;
            align-items: center;
            padding: 80px 0;
            background: linear-gradient(135deg, #F7F5F0 0%, #EAF2EF 55%, #DFE9E5 100%);
            overflow: hidden;
        }
        .hero-text {
            position: relative;
            z-index: 2;
        }
        .hero-title {
            font-family: var(--font-serif);
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--ink);
            margin-bottom: 20px;
        }
        .hero-title .title-mark {
            position: relative;
            white-space: nowrap;
            z-index: 0;
        }
        .hero-title .title-mark::after {
            content: "";
            position: absolute;
            left: 2px;
            right: 2px;
            bottom: 0.06em;
            height: 0.14em;
            background: rgba(223, 166, 74, 0.4);
            z-index: -1;
        }
        .hero-subtitle {
            font-size: 16px;
            color: var(--ink-soft);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 480px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }
        .hero-actions .btn {
            padding: 12px 26px;
            font-size: 15px;
        }
        .trust-row {
            display: flex;
            flex-wrap: wrap;
            gap: 18px 24px;
            margin-bottom: 18px;
            padding-top: 4px;
        }
        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--ink-soft);
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(228, 224, 213, 0.9);
            border-radius: 30px;
            padding: 5px 14px;
        }
        .trust-badge i {
            font-style: normal;
            font-family: Georgia, "Noto Serif SC", serif;
            font-weight: 700;
            color: var(--primary);
            font-size: 12px;
        }
        .hero-points {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 6px;
        }
        .hero-points li {
            position: relative;
            padding-left: 20px;
            font-size: 14px;
            color: var(--ink-soft);
        }
        .hero-points li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 9px;
            width: 10px;
            height: 6px;
            border-left: 2px solid var(--primary);
            border-bottom: 2px solid var(--primary);
            transform: rotate(-45deg);
        }
        .hero-visual-wrap {
            position: relative;
        }
        .hero-visual {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-2);
            background: #DCE6E2;
            margin-left: auto;
            max-width: 560px;
        }
        .hero-visual img {
            width: 100%;
            display: block;
            object-fit: cover;
            min-height: 360px;
        }
        .hero-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 110, 92, 0.06) 0%, rgba(247, 245, 240, 0.02) 100%);
        }
        .float-badge {
            position: absolute;
            background: #fff;
            border-radius: 16px;
            box-shadow: var(--shadow-2);
            padding: 14px 20px;
            display: flex;
            flex-direction: column;
            z-index: 2;
            border: 1px solid rgba(228, 224, 213, 0.7);
        }
        .float-badge .badge-num {
            font-family: Georgia, "Noto Serif SC", serif;
            font-weight: 900;
            font-size: 26px;
            color: var(--primary);
            line-height: 1.2;
        }
        .float-badge .badge-label {
            font-size: 12px;
            color: var(--ink-soft);
            margin-top: 2px;
        }
        .badge-main {
            right: -14px;
            bottom: 30px;
        }
        .badge-sub {
            left: -12px;
            top: 40px;
            padding: 12px 16px;
        }
        .badge-sub .badge-num {
            font-size: 20px;
        }

        /* ===== Services ===== */
        .services-section {
            background: var(--white);
        }
        .service-card {
            position: relative;
            display: block;
            height: 100%;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 30px 26px 24px;
            box-shadow: var(--shadow-1);
            text-decoration: none;
            color: var(--ink);
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--gold));
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-2);
            border-color: rgba(14, 110, 92, 0.2);
        }
        .service-card:hover::before {
            opacity: 1;
        }
        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .service-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--ink);
        }
        .service-card p {
            font-size: 14px;
            color: var(--ink-soft);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .step-row {
            display: grid;
            gap: 10px;
            padding-top: 16px;
            border-top: 1px dashed var(--line);
        }
        .step {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--ink-soft);
        }
        .step i {
            font-style: normal;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 11px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .card-arrow {
            position: absolute;
            right: 20px;
            top: 24px;
            font-size: 18px;
            color: var(--primary);
            opacity: 0;
            transform: translateX(-8px);
            transition: all 0.25s ease;
        }
        .service-card:hover .card-arrow {
            opacity: 1;
            transform: translateX(0);
        }

        /* ===== Stats ===== */
        .stats-section {
            background: #EBEFEB;
            padding: 60px 0;
        }
        .stats-head {
            text-align: center;
            margin-bottom: 40px;
        }
        .stats-head .eyebrow {
            color: var(--primary);
        }
        .stats-head h2 {
            font-family: var(--font-serif);
            font-size: 1.6rem;
            color: var(--ink);
            margin-bottom: 4px;
        }
        .stats-grid {
            display: flex;
            align-items: stretch;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        .stat-item {
            background: #fff;
            border: 1px solid rgba(228, 224, 213, 0.9);
            border-radius: var(--radius-card);
            padding: 24px 32px;
            text-align: center;
            min-width: 180px;
            box-shadow: var(--shadow-1);
            position: relative;
        }
        .stat-item::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: -1px;
            width: 40%;
            height: 3px;
            border-radius: 3px 3px 0 0;
            background: linear-gradient(90deg, var(--primary), var(--gold));
            opacity: 0;
            transform: translateX(-50%);
            transition: opacity 0.25s ease;
        }
        .stat-item:hover::after {
            opacity: 1;
        }
        .stat-num {
            display: block;
            font-family: Georgia, "Noto Serif SC", serif;
            font-weight: 900;
            font-size: 40px;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 13px;
            color: var(--ink-soft);
        }

        /* ===== Cases ===== */
        .cases-section {
            background: var(--bg);
        }
        .case-feature {
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-1);
            border: 1px solid var(--line);
            margin-bottom: 32px;
        }
        .case-feature-img {
            width: 100%;
            height: 100%;
            min-height: 280px;
            object-fit: cover;
        }
        .case-feature-body {
            padding: 36px 36px;
        }
        .case-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 30px;
            margin-bottom: 14px;
        }
        .case-feature-body h3 {
            font-family: var(--font-serif);
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .case-feature-body p {
            color: var(--ink-soft);
            font-size: 15px;
            margin-bottom: 16px;
        }
        .case-result {
            background: var(--primary-light);
            border-radius: 12px;
            padding: 16px 18px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--ink-soft);
        }
        .case-result strong {
            color: var(--primary);
            font-weight: 600;
            display: block;
            margin-bottom: 2px;
            font-size: 13px;
        }
        .case-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            overflow: hidden;
            height: 100%;
            box-shadow: var(--shadow-1);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-2);
        }
        .case-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .case-card-body {
            padding: 22px 22px 24px;
        }
        .case-card-body h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .case-card-body p {
            font-size: 14px;
            color: var(--ink-soft);
            margin-bottom: 14px;
        }

        /* ===== Info / CMS ===== */
        .info-section {
            background: var(--white);
        }
        .info-list {
            display: grid;
            gap: 16px;
        }
        .info-item {
            display: block;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 22px 24px;
            box-shadow: var(--shadow-1);
            color: var(--ink);
            text-decoration: none;
            transition: all 0.25s ease;
        }
        .info-item:hover {
            box-shadow: var(--shadow-2);
            transform: translateY(-2px);
            border-color: rgba(14, 110, 92, 0.2);
        }
        .info-item-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 8px;
            gap: 12px;
        }
        .info-cat {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 30px;
            padding: 3px 12px;
        }
        .info-date {
            font-size: 12px;
            color: var(--ink-soft);
        }
        .info-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--ink);
        }
        .info-summary {
            font-size: 14px;
            color: var(--ink-soft);
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .empty-state {
            border: 1px dashed var(--line);
            border-radius: var(--radius-card);
            padding: 40px;
            text-align: center;
            color: var(--ink-soft);
            background: rgba(247, 245, 240, 0.5);
        }
        .empty-state .empty-icon {
            display: block;
            font-size: 28px;
            font-weight: 700;
            color: var(--gold);
            margin-bottom: 8px;
            font-family: Georgia, serif;
        }
        .empty-state p {
            margin: 0;
            font-size: 14px;
        }
        .hot-list {
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 24px;
            position: sticky;
            top: 88px;
        }
        .hot-list h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--line);
        }
        .hot-item {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px dashed rgba(228, 224, 213, 0.7);
            color: var(--ink);
            text-decoration: none;
            font-size: 14px;
            line-height: 1.6;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .hot-item:last-child {
            border-bottom: none;
        }
        .hot-item span {
            font-family: Georgia, "Noto Serif SC", serif;
            font-weight: 700;
            color: var(--gold);
            min-width: 20px;
            font-size: 14px;
        }
        .hot-item:hover {
            color: var(--primary);
            padding-left: 6px;
        }

        /* ===== Solutions ===== */
        .solutions-section {
            background: var(--bg);
        }
        .solution-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-1);
            display: flex;
            flex-direction: column;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            position: relative;
        }
        .solution-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-2);
        }
        .solution-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 22px;
        }
        .solution-card h3 {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .solution-card ul {
            list-style: none;
            padding: 0;
            margin: 0 0 28px;
            display: grid;
            gap: 12px;
        }
        .solution-card ul li {
            position: relative;
            padding-left: 20px;
            font-size: 14px;
            color: var(--ink-soft);
        }
        .solution-card ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 9px;
            width: 10px;
            height: 6px;
            border-left: 2px solid var(--primary);
            border-bottom: 2px solid var(--primary);
            transform: rotate(-45deg);
        }
        .solution-foot {
            margin-top: auto;
            border-top: 1px solid var(--line);
            padding-top: 22px;
        }
        .featured-card {
            border-color: rgba(14, 110, 92, 0.35);
            box-shadow: var(--shadow-2);
        }
        .featured-card .solution-icon {
            background: var(--gold-light);
            color: #8A6A1F;
        }
        .solution-flag {
            position: absolute;
            top: 18px;
            right: 18px;
            background: var(--gold);
            color: var(--ink);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 30px;
            letter-spacing: 0.04em;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--white);
        }
        .faq-left {
            padding-right: 20px;
        }
        .faq-left .section-title {
            font-size: 1.8rem;
        }
        .faq-contact-card {
            margin-top: 28px;
            background: var(--primary-light);
            border-radius: var(--radius-card);
            padding: 26px 26px;
        }
        .faq-contact-card h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .faq-contact-card p {
            font-size: 14px;
            color: var(--ink-soft);
            margin-bottom: 16px;
        }
        .custom-accordion .accordion-item {
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            background: #fff;
            transition: box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .custom-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            box-shadow: inset 4px 0 0 var(--primary), var(--shadow-1);
            border-color: rgba(14, 110, 92, 0.25);
        }
        .custom-accordion .accordion-button {
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            background: transparent;
            box-shadow: none;
            border-radius: 0;
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .custom-accordion .accordion-button::after {
            display: none;
        }
        .custom-accordion .accordion-button:not(.collapsed) {
            background: rgba(14, 110, 92, 0.04);
            color: var(--primary);
        }
        .faq-icon {
            position: relative;
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            margin-left: auto;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--primary);
            border-radius: 2px;
            transition: transform 0.25s ease, opacity 0.25s ease;
        }
        .faq-icon::before {
            top: 8px;
            left: 0;
            width: 18px;
            height: 2px;
        }
        .faq-icon::after {
            top: 0;
            left: 8px;
            width: 2px;
            height: 18px;
        }
        .accordion-button:not(.collapsed) .faq-icon::after {
            transform: scaleY(0);
        }
        .custom-accordion .accordion-body {
            padding: 0 24px 22px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--ink-soft);
            border-top: 1px dashed var(--line);
        }
        .custom-accordion .accordion-body p {
            margin: 14px 0 0;
        }

        /* ===== Contact ===== */
        .contact-section {
            background: linear-gradient(135deg, rgba(27, 41, 38, 0.96) 0%, rgba(14, 110, 92, 0.92) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 100px 0;
            color: #fff;
        }
        .contact-section .section-title {
            color: #fff;
            margin-bottom: 16px;
        }
        .contact-section .section-desc {
            color: rgba(255, 255, 255, 0.8);
        }
        .contact-points {
            list-style: none;
            padding: 0;
            margin: 24px 0 0;
        }
        .contact-points li {
            position: relative;
            padding-left: 24px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 12px;
        }
        .contact-points li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 9px;
            width: 12px;
            height: 7px;
            border-left: 2px solid var(--gold);
            border-bottom: 2px solid var(--gold);
            transform: rotate(-45deg);
        }
        .contact-form {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-card);
            padding: 28px;
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }
        .form-flex-row {
            display: grid;
            grid-template-columns: 1fr 1fr 1.6fr auto;
            gap: 12px;
            align-items: center;
        }
        .contact-form .form-control {
            background: #fff;
            border: none;
            border-radius: 8px;
            padding: 12px 16px;
            font-size: 14px;
            min-width: 0;
        }
        .contact-form .form-control:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(223, 166, 74, 0.35);
        }
        .contact-form .btn {
            padding: 12px 22px;
            font-size: 14px;
            white-space: nowrap;
        }
        .form-meta {
            margin-top: 16px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
        }
        .form-meta .dev-placeholder {
            opacity: 0.7;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark-footer);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand .brand {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .brand-icon {
            background: rgba(255, 255, 255, 0.1);
            color: var(--gold);
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            max-width: 240px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 12px;
            text-decoration: none;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .footer-col a:hover {
            color: var(--gold);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .main-nav {
                display: none;
            }
            .hero {
                padding: 64px 0;
                min-height: auto;
            }
            .hero-visual {
                margin-left: 0;
                margin-top: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .form-flex-row {
                grid-template-columns: 1fr;
            }
        }
        @media (min-width: 992px) {
            .solution-col.featured {
                transform: translateY(-20px);
            }
        }
        @media (max-width: 767.98px) {
            .section {
                padding: 64px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .stats-grid {
                gap: 16px;
            }
            .stat-item {
                min-width: calc(50% - 16px);
                padding: 18px 14px;
            }
            .stat-num {
                font-size: 32px;
            }
            .case-feature-body {
                padding: 24px;
            }
            .case-feature-img {
                min-height: 220px;
            }
            .faq-left {
                padding-right: 0;
                margin-bottom: 32px;
            }
            .hot-list {
                position: static;
            }
            .contact-section {
                padding: 72px 0;
            }
            .contact-form {
                margin-top: 32px;
                padding: 20px;
            }
            .search-panel-inner {
                flex-direction: column;
            }
            .hero-actions .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
        }
        @media (max-width: 575.98px) {
            .section {
                padding: 56px 0;
            }
            .brand-text {
                font-size: 16px;
            }
            .hero-title {
                font-size: 1.75rem;
            }
            .hero-visual {
                border-radius: 16px;
            }
            .service-card {
                border-radius: 12px;
                padding: 24px 20px;
            }
            .solution-card {
                padding: 24px 20px;
                border-radius: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .footer-brand p {
                margin: 0 auto;
            }
            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
            .form-meta {
                justify-content: center;
                text-align: center;
            }
            .float-badge {
                padding: 10px 14px;
            }
            .badge-main {
                right: -6px;
                bottom: 16px;
            }
            .badge-sub {
                left: -6px;
                top: 20px;
            }
            .float-badge .badge-num {
                font-size: 20px;
            }
            .float-badge .badge-label {
                font-size: 11px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0E6E5C;
            --primary-light: #1A8A74;
            --primary-dark: #0A5747;
            --accent: #DFA64A;
            --bg-warm: #F7F5F0;
            --bg-white: #FFFFFF;
            --text-dark: #202B29;
            --text-gray: #4A5A56;
            --border-light: #E4E0D5;
            --radius-card: 16px;
            --radius-btn: 8px;
            --shadow-card: 0 2px 8px rgba(32,43,41,0.04), 0 12px 32px rgba(32,43,41,0.08);
            --shadow-hover: 0 4px 16px rgba(32,43,41,0.06), 0 20px 40px rgba(32,43,41,0.12);
            --font-serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-warm);
            color: var(--text-dark);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container {
            max-width: 1140px;
        }

        /* ===== 按钮 ===== */
        .btn {
            border-radius: var(--radius-btn);
            padding: 12px 30px;
            font-weight: 600;
            font-size: 15px;
            border: 1px solid transparent;
            transition: all var(--transition);
        }

        .btn:focus-visible,
        .accordion-button:focus-visible,
        .search-toggle:focus-visible,
        .menu-toggle:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(14, 110, 92, 0.28);
        }

        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: rgba(14, 110, 92, 0.08);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .btn-sm {
            padding: 9px 22px;
            font-size: 14px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(247, 245, 240, 0.96);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-light);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            position: relative;
        }

        .header-left {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            flex-shrink: 0;
            transition: background var(--transition);
        }

        .brand:hover .brand-icon {
            background: var(--primary-dark);
        }

        .brand-text {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            font-size: 15px;
            color: var(--text-gray);
            font-weight: 500;
            padding: 8px 2px;
            border-bottom: 2px solid transparent;
            transition: all var(--transition);
        }

        .nav-link:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-toggle {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border-light);
            background: var(--bg-white);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-dark);
            cursor: pointer;
            transition: all var(--transition);
        }

        .search-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border: none;
            background: transparent;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            border-radius: var(--radius-btn);
        }

        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .menu-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 搜索面板 */
        .search-panel {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 12px 32px rgba(32, 43, 41, 0.08);
            padding: 20px 0;
        }

        .search-panel.open {
            display: block;
        }

        .search-box {
            display: flex;
            gap: 12px;
            max-width: 720px;
            margin: 0 auto;
        }

        .search-box .form-control {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-btn);
            padding: 12px 18px;
            font-size: 15px;
            background: var(--bg-warm);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-box .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(14, 110, 92, 0.12);
            background: #fff;
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 12px 32px rgba(32, 43, 41, 0.08);
            padding: 20px 0 28px;
        }

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

        .mobile-nav-link {
            display: block;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-dark);
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .mobile-nav-link:last-of-type {
            border-bottom: none;
        }

        .mobile-nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .mobile-menu .btn {
            margin-top: 16px;
            width: 100%;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, #EDF2F0 0%, var(--bg-warm) 65%);
            padding: 72px 0 64px;
            border-bottom: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
        }

        .breadcrumb-nav {
            font-size: 13px;
            color: var(--text-gray);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb-nav .sep {
            margin: 0 10px;
            color: #A8B5B0;
        }

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

        .page-hero h1 {
            font-family: var(--font-serif);
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-dark);
            margin-bottom: 18px;
            max-width: 680px;
        }

        .hero-desc {
            font-size: 16px;
            color: var(--text-gray);
            max-width: 600px;
            margin-bottom: 0;
            line-height: 1.8;
        }

        .hero-deco {
            font-family: var(--font-serif);
            font-size: clamp(60px, 8vw, 120px);
            font-weight: 900;
            color: rgba(14, 110, 92, 0.08);
            line-height: 1;
            text-align: right;
            white-space: nowrap;
            user-select: none;
            position: absolute;
            right: 24px;
            bottom: 16px;
            pointer-events: none;
        }

        /* ===== 覆盖范围 ===== */
        .category-overview {
            padding: 80px 0;
        }

        .overview-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: all var(--transition);
            border: 1px solid rgba(228, 224, 213, 0.4);
        }

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

        .overview-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(14, 110, 92, 0.1);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }

        .overview-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-dark);
        }

        .overview-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .overview-card li {
            padding: 9px 0 9px 20px;
            position: relative;
            border-bottom: 1px dashed var(--border-light);
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.6;
        }

        .overview-card li:last-child {
            border-bottom: none;
        }

        .overview-card li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 17px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        .overview-card a {
            color: var(--primary);
            font-weight: 500;
        }

        .overview-card a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        /* ===== 访问流程 ===== */
        .access-steps {
            background: var(--bg-warm);
            padding: 80px 0;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

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

        .eyebrow {
            display: inline-block;
            font-size: 12px;
            letter-spacing: 2px;
            color: var(--accent);
            font-weight: 700;
            margin-bottom: 8px;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.5rem, 2.4vw, 2rem);
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-dark);
            line-height: 1.35;
        }

        .section-head p {
            color: var(--text-gray);
            max-width: 680px;
            margin-bottom: 0;
        }

        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 30px 28px;
            height: 100%;
            box-shadow: var(--shadow-card);
            position: relative;
            transition: all var(--transition);
            border: 1px solid rgba(228, 224, 213, 0.4);
        }

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

        .step-num {
            font-family: "Georgia", var(--font-serif);
            font-size: 2.6rem;
            font-weight: 900;
            color: rgba(14, 110, 92, 0.16);
            line-height: 1;
            display: block;
            margin-bottom: 16px;
        }

        .step-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-gray);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== 通道类型 ===== */
        .channel-types {
            padding: 80px 0;
        }

        .channel-img {
            border-radius: 20px;
            box-shadow: var(--shadow-card);
            width: 100%;
            display: block;
        }

        .channel-types .eyebrow {
            margin-bottom: 10px;
        }

        .channel-types h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.5rem, 2.4vw, 2rem);
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-dark);
            line-height: 1.35;
        }

        .channel-item {
            padding: 18px 0;
            border-bottom: 1px solid var(--border-light);
        }

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

        .channel-item h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 5px;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .channel-item h3::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            flex-shrink: 0;
        }

        .channel-item p {
            font-size: 14px;
            color: var(--text-gray);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .category-faq {
            background: var(--bg-warm);
            padding: 80px 0;
            border-top: 1px solid var(--border-light);
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion-item {
            border: 1px solid var(--border-light) !important;
            border-radius: var(--radius-card) !important;
            margin-bottom: 16px;
            box-shadow: var(--shadow-card);
            background: var(--bg-white);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

        .accordion-item:hover {
            box-shadow: var(--shadow-hover);
        }

        .accordion-button {
            font-size: 15px;
            font-weight: 600;
            padding: 22px 28px;
            background: var(--bg-white);
            color: var(--text-dark);
            box-shadow: none !important;
            border: none;
            transition: background 0.3s ease;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(14, 110, 92, 0.04);
            color: var(--primary);
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }

        .accordion-button::after {
            background: none;
            content: "+";
            font-size: 24px;
            font-weight: 400;
            color: var(--primary);
            width: auto;
            height: auto;
            line-height: 1;
            transition: transform 0.3s ease;
            font-family: var(--font-sans);
        }

        .accordion-button:not(.collapsed)::after {
            content: "−";
            transform: rotate(0);
        }

        .accordion-body {
            padding: 0 28px 24px;
            font-size: 14px;
            color: var(--text-gray);
            border-top: 1px dashed var(--border-light);
            padding-top: 16px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .category-cta {
            background: var(--primary);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .category-cta::before {
            content: "";
            position: absolute;
            top: -40%;
            right: -10%;
            width: 420px;
            height: 420px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .cta-inner h2 {
            font-family: var(--font-serif);
            color: #fff;
            font-size: clamp(1.4rem, 2.2vw, 1.9rem);
            margin-bottom: 8px;
            font-weight: 700;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            margin: 0;
            line-height: 1.7;
        }

        .btn-light-cta {
            background: var(--accent);
            border: 1px solid var(--accent);
            color: var(--text-dark);
            padding: 14px 38px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            white-space: nowrap;
            font-size: 15px;
        }

        .btn-light-cta:hover {
            background: #fff;
            border-color: #fff;
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1B2926;
            color: #D8E0DD;
            padding-top: 48px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }

        .footer-brand .brand-text {
            color: #fff;
        }

        .footer-brand .brand-icon {
            background: rgba(255, 255, 255, 0.12);
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 14px;
            max-width: 340px;
            line-height: 1.7;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 16px;
            font-weight: 600;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            padding: 5px 0;
            transition: color 0.2s ease;
        }

        .footer-col a:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 18px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .page-hero {
                padding: 56px 0 48px;
            }

            .main-nav {
                display: none;
            }

            .header-cta {
                display: none;
            }

            .menu-toggle {
                display: inline-flex;
            }

            .hero-deco {
                display: none;
            }

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

        @media (max-width: 767px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }

            .category-overview,
            .access-steps,
            .channel-types,
            .category-faq {
                padding: 56px 0;
            }

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

            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }

            .btn-light-cta {
                width: 100%;
                text-align: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-bottom: 28px;
            }

            .footer-brand p {
                max-width: 100%;
            }

            .step-card {
                padding: 24px;
            }

            .overview-card {
                padding: 24px;
            }
        }

        @media (max-width: 575px) {
            body {
                font-size: 14px;
            }

            .brand-text {
                font-size: 17px;
            }

            .page-hero h1 {
                font-size: 1.45rem;
                line-height: 1.4;
            }

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

            .section-head h2 {
                font-size: 1.4rem;
            }

            .accordion-button {
                font-size: 14px;
                padding: 18px 20px;
            }

            .accordion-body {
                padding: 0 20px 20px;
            }

            .btn,
            .btn-light-cta {
                padding: 12px 24px;
                font-size: 14px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }

/* roulang page: article */
/* ===== Design Tokens ===== */
:root {
  --primary: #0E6E5C;
  --primary-rgb: 14, 110, 92;
  --primary-dark: #0A5448;
  --accent: #DFA64A;
  --accent-rgb: 223, 166, 74;
  --accent-dark: #C9943A;
  --bg-warm: #F7F5F0;
  --bg-white: #FFFFFF;
  --bg-deep: #1B2926;
  --ink: #202B29;
  --ink-secondary: #4A5A56;
  --ink-muted: #7C8A85;
  --border-light: #E4E0D5;
  --radius-card: 16px;
  --radius-btn: 8px;
  --radius-sm: 6px;
  --shadow-card: 0 2px 8px rgba(32,43,41,.04), 0 12px 32px rgba(32,43,41,.08);
  --shadow-hover: 0 6px 16px rgba(32,43,41,.08), 0 20px 48px rgba(32,43,41,.12);
  --font-serif: "Noto Serif SC","Songti SC","SimSun",serif;
  --font-sans: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --nav-height: 64px;
  --section-pad: 96px;
  --transition: .25s ease;
}

/* ===== Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-warm);
  color: var(--ink);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-dark); }
button { cursor: pointer; }

/* ===== Container ===== */
.container { max-width: 1140px; padding-left: 20px; padding-right: 20px; }

/* ===== Buttons ===== */
.btn {
  border-radius: var(--radius-btn);
  font-weight: 600;
  padding: 10px 24px;
  transition: all var(--transition);
  font-size: .92rem;
  border-width: 1.5px;
}
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  box-shadow: none;
}
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(var(--primary-rgb), .25);
}
.btn-primary:active {
  background: var(--primary-dark);
  transform: translateY(0);
  box-shadow: none;
}
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: rgba(var(--primary-rgb), .12);
  border-color: var(--primary);
  color: var(--primary);
}
.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--ink);
}
.btn-accent:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(var(--accent-rgb), .35);
}
.btn-ghost {
  background: transparent;
  border: 1.5px solid rgba(255,255,255,.5);
  color: #fff;
}
.btn-ghost:hover {
  background: rgba(255,255,255,.1);
  border-color: #fff;
  color: #fff;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(247,245,240,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  height: var(--nav-height);
}
.site-header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: 16px;
}
.header-left {
  display: flex;
  align-items: center;
  gap: 24px;
  flex: 1;
  min-width: 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: .02em;
  flex-shrink: 0;
}
.brand:hover { color: var(--ink); }
.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #2A8A76);
  color: #fff;
  flex-shrink: 0;
}
.brand-text {
  white-space: nowrap;
  font-family: var(--font-serif);
  font-weight: 700;
  letter-spacing: .02em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
}
.nav-link {
  padding: 6px 16px;
  border-radius: var(--radius-btn);
  font-size: .9rem;
  font-weight: 500;
  color: var(--ink-secondary);
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--primary);
  background: rgba(var(--primary-rgb), .08);
}
.nav-link.active {
  color: var(--primary);
  background: rgba(var(--primary-rgb), .12);
  font-weight: 600;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.btn-search {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-light);
  border-radius: 50%;
  background: transparent;
  color: var(--ink-secondary);
  transition: all var(--transition);
}
.btn-search:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(var(--primary-rgb), .06);
}
.header-cta {
  height: 40px;
  padding: 0 20px;
  font-size: .88rem;
  display: inline-flex;
  align-items: center;
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  background: transparent;
  padding: 0;
  position: relative;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  margin: 4px auto;
  border-radius: 2px;
  transition: all .3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ===== Search Panel ===== */
.search-panel {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 16px 32px rgba(32,43,41,.12);
  padding: 20px 0;
  transform: translateY(-120%);
  transition: transform .35s ease;
  z-index: 999;
}
.search-panel.open { transform: translateY(0); }
.search-panel-inner {
  display: flex;
  gap: 12px;
  align-items: center;
}
.search-panel .form-control {
  border-radius: var(--radius-btn);
  border: 1.5px solid var(--border-light);
  padding: 11px 16px;
  font-size: .95rem;
  background: var(--bg-warm);
  color: var(--ink);
  transition: all var(--transition);
}
.search-panel .form-control::placeholder { color: var(--ink-muted); }
.search-panel .form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), .12);
  background: #fff;
}

/* ===== Breadcrumb ===== */
.breadcrumb-bar {
  background: rgba(32,43,41,.04);
  border-bottom: 1px solid var(--border-light);
  padding: 10px 0;
  font-size: .85rem;
}
.breadcrumb-bar .container {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  overflow: hidden;
}
.breadcrumb-bar a { color: var(--ink-secondary); transition: color .2s; }
.breadcrumb-bar a:hover { color: var(--primary); }
.breadcrumb-bar .sep {
  color: var(--ink-muted);
  margin: 0 10px;
  flex-shrink: 0;
}
.breadcrumb-bar .current {
  color: var(--ink);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 320px;
}

/* ===== Article Header ===== */
.article-header {
  padding: 56px 0 36px;
  border-bottom: 1px solid var(--border-light);
  position: relative;
  background: linear-gradient(180deg, rgba(var(--primary-rgb),.04), transparent);
}
.article-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent), transparent);
}
.category-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  background: rgba(var(--primary-rgb), .1);
  color: var(--primary);
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .02em;
}
.article-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.35;
  margin: 18px 0 14px;
  color: var(--ink);
  max-width: 860px;
}
.article-summary {
  color: var(--ink-secondary);
  font-size: 1rem;
  max-width: 760px;
  margin-bottom: 20px;
  line-height: 1.75;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--ink-muted);
  font-size: .85rem;
  flex-wrap: wrap;
}
.article-meta i { margin-right: 4px; }

/* ===== Article Body ===== */
.article-body-wrap {
  padding: 52px 0 72px;
}
.article-content {
  max-width: 720px;
  margin: 0 auto;
}
.article-content p {
  margin-bottom: 24px;
  line-height: 1.9;
  color: var(--ink);
}
.article-content h2 {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  margin: 48px 0 16px;
  padding-left: 16px;
  position: relative;
  line-height: 1.4;
  color: var(--ink);
}
.article-content h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}
.article-content h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 32px 0 12px;
  color: var(--ink);
}
.article-content ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: 24px;
}
.article-content ul li {
  padding-left: 24px;
  position: relative;
  margin-bottom: 10px;
  line-height: 1.8;
}
.article-content ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}
.article-content ol {
  padding-left: 1.5em;
  margin-bottom: 24px;
}
.article-content ol li {
  padding-left: 4px;
  margin-bottom: 10px;
  line-height: 1.8;
}
.article-content ol li::marker {
  color: var(--primary);
  font-weight: 700;
}
.article-content img {
  border-radius: 12px;
  margin: 24px 0;
}
.article-content blockquote {
  border-left: 3px solid var(--accent);
  background: rgba(var(--accent-rgb), .07);
  padding: 16px 24px;
  margin: 24px 0;
  border-radius: 0 12px 12px 0;
  color: var(--ink-secondary);
  font-style: normal;
}
.article-content blockquote p { margin-bottom: 0; color: var(--ink-secondary); }
.article-content a {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(var(--primary-rgb), .4);
}
.article-content a:hover { text-decoration-color: var(--primary); }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: .92rem;
}
.article-content th,
.article-content td {
  border: 1px solid var(--border-light);
  padding: 12px 16px;
  text-align: left;
}
.article-content th {
  background: rgba(var(--primary-rgb), .06);
  font-weight: 600;
}
.article-content hr {
  border: 0;
  border-top: 1px solid var(--border-light);
  margin: 36px 0;
}

/* ===== Article Missing ===== */
.article-missing {
  text-align: center;
  padding: 72px 24px;
  max-width: 560px;
  margin: 0 auto;
}
.missing-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(var(--primary-rgb), .06);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 2rem;
  margin-bottom: 20px;
}
.article-missing h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 12px;
}
.article-missing p { color: var(--ink-secondary); margin-bottom: 24px; }

/* ===== Article Foot ===== */
.article-foot {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
}
.back-to-list {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
  font-size: .9rem;
  transition: gap .25s ease;
}
.back-to-list:hover { gap: 12px; color: var(--primary-dark); }

/* ===== Related Section ===== */
.related-section {
  background: var(--bg-white);
  padding: var(--section-pad) 0;
  border-top: 1px solid var(--border-light);
}
.section-head h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 10px;
}
.section-head p { color: var(--ink-secondary); }
.related-card {
  background: var(--bg-warm);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all var(--transition);
  height: 100%;
  box-shadow: 0 1px 4px rgba(32,43,41,.04);
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.related-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.related-card:hover .related-thumb img { transform: scale(1.04); }
.related-body {
  padding: 20px 20px 24px;
}
.related-body h3 {
  font-family: var(--font-serif);
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 10px 0 8px;
}
.related-body h3 a { color: var(--ink); }
.related-body h3 a:hover { color: var(--primary); }
.related-body p {
  color: var(--ink-secondary);
  font-size: .88rem;
  line-height: 1.7;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.tag {
  display: inline-block;
  padding: 3px 12px;
  background: rgba(var(--primary-rgb), .08);
  color: var(--primary);
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 600;
}
.related-link {
  color: var(--primary);
  font-weight: 600;
  font-size: .88rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .25s ease;
}
.related-link:hover { gap: 10px; color: var(--primary-dark); }

/* ===== CTA Band ===== */
.cta-band {
  background: var(--bg-deep) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  background-blend-mode: overlay;
  padding: 68px 0;
  color: #fff;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-text h2 {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.cta-text p {
  color: rgba(255,255,255,.7);
  margin: 0;
  font-size: .95rem;
}
.cta-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255,255,255,.75);
  padding: 56px 0 24px;
}
.site-footer .brand { color: #fff; }
.site-footer .brand-icon { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: var(--ink); }
.site-footer a { color: rgba(255,255,255,.7); transition: color .2s; }
.site-footer a:hover { color: var(--accent); text-decoration: none; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand p {
  color: rgba(255,255,255,.55);
  font-size: .88rem;
  margin-top: 12px;
  max-width: 320px;
}
.footer-col h4 {
  color: rgba(255,255,255,.9);
  font-size: .92rem;
  font-weight: 600;
  margin-bottom: 14px;
}
.footer-col a {
  display: block;
  padding: 4px 0;
  font-size: .88rem;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 20px;
  font-size: .8rem;
  color: rgba(255,255,255,.5);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .main-nav {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-warm);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 20px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 16px 32px rgba(32,43,41,.12);
    transform: translateY(-120%);
    transition: transform .35s ease;
    display: none;
    margin-left: 0;
    z-index: 998;
  }
  .main-nav.open { transform: translateY(0); display: flex; }
  .main-nav .nav-link { padding: 10px 16px; font-size: 1rem; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .header-cta { display: none; }
  .header-left { gap: 12px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .article-header { padding: 40px 0 28px; }
  .article-header h1 { font-size: 1.6rem; }
  .article-body-wrap { padding: 36px 0 52px; }
  .related-section, .cta-band { padding: 56px 0; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .cta-actions { width: 100%; }
  .cta-actions .btn { flex: 1; text-align: center; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .search-panel-inner { flex-direction: column; align-items: stretch; }
  .search-panel .btn { width: 100%; }
}

@media (max-width: 576px) {
  body { font-size: 15px; }
  .container { padding-left: 16px; padding-right: 16px; }
  .brand-text { font-size: .95rem; }
  .article-header { padding: 32px 0 24px; }
  .article-header h1 { font-size: 1.45rem; }
  .article-summary { font-size: .92rem; }
  .article-meta { gap: 12px; font-size: .8rem; }
  .article-content h2 { font-size: 1.25rem; }
  .article-content h3 { font-size: 1.08rem; }
  .article-content td, .article-content th { padding: 8px 10px; font-size: .85rem; }
  .related-section, .cta-band { padding: 44px 0; }
  .section-head h2 { font-size: 1.6rem; }
  .cta-text h2 { font-size: 1.3rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 6px; align-items: flex-start; }
  .breadcrumb-bar .current { max-width: 160px; }
}

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