/* roulang page: index */
:root {
            --primary: #0F766E;
            --primary-dark: #0b5a54;
            --primary-light: #14B8A6;
            --accent: #C29B62;
            --accent-light: #D4AF6A;
            --bg: #F6F5F2;
            --text: #1F2937;
            --text-muted: #6B7280;
            --border: #E5E7EB;
            --card-bg: #FFFFFF;
            --dark: #111827;
            --footer-text: #9CA3AF;
            --danger: #DC2626;
        }
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }
        input,
        select {
            font-family: inherit;
        }
        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container-x {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .container-x {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
        }
        .nav-link {
            position: relative;
            color: #374151;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 4px;
            transition: color 0.2s ease;
            display: inline-block;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.3s ease-out;
            border-radius: 2px;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--primary);
        }
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 10px 24px;
            border-radius: 999px;
            transition: all 0.25s ease-out;
            border: none;
            cursor: pointer;
            line-height: 1.4;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(15, 118, 110, 0.25);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 1.5px solid rgba(255, 255, 255, 0.8);
            color: #fff;
            font-weight: 500;
            font-size: 15px;
            padding: 10px 24px;
            border-radius: 999px;
            background: transparent;
            transition: all 0.25s ease-out;
            cursor: pointer;
            line-height: 1.4;
        }
        .btn-outline:hover {
            border-color: var(--primary-light);
            color: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: #4B5563;
            background: #fff;
            border: 1px solid var(--border);
            white-space: nowrap;
            transition: all 0.2s ease;
            cursor: pointer;
        }
        .chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-50, #f0f9f8);
        }
        .chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .service-card {
            background: var(--card-bg);
            border-radius: 16px;
            border: 1px solid #E5E7EB;
            padding: 32px;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
            transition: all 0.3s ease-out;
            position: relative;
            overflow: hidden;
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
            border-color: rgba(15, 118, 110, 0.2);
        }
        .service-card .icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f0f9f8;
            transition: transform 0.3s ease, background 0.3s ease;
        }
        .service-card:hover .icon-wrap {
            transform: scale(1.06);
            background: #d9f0ee;
        }
        .service-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.2s ease;
        }
        .service-card .card-link:hover {
            gap: 8px;
        }
        .news-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 8px;
            border-bottom: 1px solid #F3F4F6;
            transition: background 0.2s ease;
        }
        .news-row:hover {
            background: #FAFAF9;
        }
        .news-row:hover h4 {
            color: var(--primary);
        }
        .news-row h4 {
            font-size: 15px;
            font-weight: 500;
            color: #1F2937;
            transition: color 0.2s;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background: #f0f9f8;
            color: #0F766E;
            border: 1px solid #b3e1dd;
            white-space: nowrap;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .faq-item.open {
            border-color: var(--primary);
            box-shadow: 0 4px 20px rgba(15, 118, 110, 0.08);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            cursor: pointer;
            transition: color 0.2s;
            background: transparent;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            position: relative;
            transition: transform 0.3s ease;
            color: var(--primary);
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: currentColor;
            border-radius: 2px;
        }
        .faq-icon::before {
            top: 9px;
            left: 2px;
            width: 16px;
            height: 2px;
        }
        .faq-icon::after {
            top: 2px;
            left: 9px;
            width: 2px;
            height: 16px;
            transition: opacity 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease-out, padding 0.3s ease;
            padding: 0 24px;
            font-size: 14.5px;
            line-height: 1.75;
            color: #6B7280;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 20px;
        }
        .modal-overlay {
            position: fixed;
            inset: 0;
            z-index: 200;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            display: none;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        .modal-overlay.active {
            display: flex;
        }
        .modal-box {
            background: #fff;
            border-radius: 20px;
            max-width: 520px;
            width: 100%;
            max-height: 90vh;
            overflow-y: auto;
            padding: 36px;
            box-shadow: 0 24px 80px rgba(0, 0, 0, 0.2);
            position: relative;
            animation: modalIn 0.3s ease-out;
        }
        @keyframes modalIn {
            from {
                opacity: 0;
                transform: translateY(16px) scale(0.97);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }
        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #6B7280;
            transition: all 0.2s ease;
            background: #F3F4F6;
        }
        .modal-close:hover {
            color: var(--primary);
            background: #f0f9f8;
            transform: rotate(90deg);
        }
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border-radius: 10px;
            border: 1px solid var(--border);
            font-size: 15px;
            background: #FAFAF9;
            transition: all 0.2s ease;
            color: var(--text);
        }
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.1);
        }
        .form-input.error {
            border-color: var(--danger);
            box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.08);
        }
        .mobile-menu {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: #fff;
            padding: 20px 20px 24px;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
            z-index: 99;
            display: none;
            border-bottom: 1px solid #F3F4F6;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 8px;
            font-size: 16px;
            font-weight: 500;
            color: #374151;
            border-radius: 8px;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .mobile-menu a:hover {
            background: #f0f9f8;
            color: var(--primary);
        }
        .mobile-menu a.active {
            color: var(--primary);
            background: #f0f9f8;
        }
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .stat-number {
            font-family: "Inter", "DIN Alternate", "Arial Narrow", sans-serif;
            font-variant-numeric: tabular-nums;
            font-size: 48px;
            font-weight: 700;
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .hero-label {
            font-size: 14px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            font-weight: 600;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: #f0f9f8;
            color: var(--primary);
            border: 1px solid #b3e1dd;
            letter-spacing: 0.02em;
        }
        .mobile-search-wrap {
            display: none;
        }
        @media (max-width: 767px) {
            .desktop-search {
                display: none;
            }
            .mobile-search-wrap {
                display: block;
            }
            .mobile-search-expand {
                display: none;
                width: 100%;
                padding: 10px 16px;
                border-bottom: 1px solid #F3F4F6;
                background: #fff;
            }
            .mobile-search-expand.open {
                display: block;
            }
            .stat-number {
                font-size: 36px;
            }
        }
        .hero-main {
            background-image: linear-gradient(to top, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.1)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
        }
        .hero-highlight {
            color: var(--accent-light);
        }
        .scoll-indicator {
            width: 24px;
            height: 40px;
            border: 2px solid rgba(255, 255, 255, 0.4);
            border-radius: 12px;
            position: relative;
        }
        .scoll-indicator::before {
            content: '';
            position: absolute;
            top: 6px;
            left: 50%;
            width: 4px;
            height: 8px;
            margin-left: -2px;
            border-radius: 2px;
            background: rgba(255, 255, 255, 0.6);
            animation: scrollDot 1.6s infinite ease-in-out;
        }
        @keyframes scrollDot {
            0% {
                transform: translateY(0);
                opacity: 1;
            }
            100% {
                transform: translateY(14px);
                opacity: 0;
            }
        }
        .featured-news-img img {
            transition: transform 0.5s ease;
        }
        .featured-news-img:hover img {
            transform: scale(1.04);
        }
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }
        .toast-tip {
            position: fixed;
            bottom: 32px;
            left: 50%;
            transform: translateX(-50%) translateY(80px);
            background: #111827;
            color: #fff;
            padding: 12px 24px;
            border-radius: 999px;
            font-size: 14px;
            z-index: 300;
            opacity: 0;
            transition: all 0.4s ease;
            pointer-events: none;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
        }
        .toast-tip.show {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }

/* roulang page: article */
:root {
            --primary: #0F766E;
            --primary-dark: #115E59;
            --primary-light: #14B8A6;
            --accent: #C29B62;
            --accent-light: #D4AF6A;
            --bg-warm: #F6F5F2;
            --bg-dark: #111827;
            --text-main: #1F2937;
            --text-muted: #6B7280;
            --text-footer: #9CA3AF;
            --border-light: #E5E7EB;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-hover: 0 12px 32px rgba(17, 24, 39, 0.08);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--bg-warm);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

        .container-x {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(229, 231, 235, 0.6);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }

        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: #374151;
            padding: 6px 2px;
            transition: color 0.2s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.3s ease;
        }

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

        .nav-link:hover::after {
            transform: scaleX(1);
        }

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

        .nav-link.active::after {
            transform: scaleX(1);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 20px;
            border-radius: 999px;
            transition: all 0.25s ease;
            box-shadow: 0 2px 8px rgba(15, 118, 110, 0.2);
            border: none;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(15, 118, 110, 0.28);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 1px 4px rgba(15, 118, 110, 0.2);
        }

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

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 22px;
            border-radius: 999px;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
            transition: all 0.25s ease;
        }

        .btn-outline:hover {
            border-color: var(--accent-light);
            color: var(--accent-light);
            transform: translateY(-1px);
        }

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

        .desktop-search input:focus {
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: #F0FDFA;
            border: 1px solid #CCFBF1;
            padding: 3px 12px;
            border-radius: 999px;
        }

        .tag {
            display: inline-block;
            font-size: 13px;
            color: #4B5563;
            background: #F3F4F6;
            padding: 4px 14px;
            border-radius: 999px;
            transition: all 0.2s ease;
        }

        .tag:hover {
            background: #E5E7EB;
            color: var(--primary);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: #6B7280;
            padding: 24px 0 8px;
        }

        .breadcrumb a {
            color: #6B7280;
            transition: color 0.2s;
        }

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

        .breadcrumb .sep {
            color: #D1D5DB;
        }

        .breadcrumb .current {
            color: #1F2937;
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 240px;
        }

        /* ===== Article Content ===== */
        .article-content {
            font-size: 16px;
            line-height: 1.85;
            color: #1F2937;
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.45;
            margin-top: 40px;
            margin-bottom: 16px;
            color: #111827;
            border-bottom: 1px solid #F3F4F6;
            padding-bottom: 12px;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.5;
            margin-top: 32px;
            margin-bottom: 12px;
            color: #1F2937;
        }

        .article-content h4 {
            font-size: 17px;
            font-weight: 600;
            margin-top: 24px;
            margin-bottom: 8px;
            color: #374151;
        }

        .article-content p {
            margin-bottom: 20px;
            color: #374151;
        }

        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid rgba(15, 118, 110, 0.2);
            transition: all 0.2s;
        }

        .article-content a:hover {
            color: var(--primary-dark);
            border-bottom-color: var(--primary-dark);
        }

        .article-content strong {
            font-weight: 600;
            color: #111827;
        }

        .article-content ul {
            list-style: none;
            margin: 0 0 20px;
            padding: 0;
        }

        .article-content ul li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 10px;
            color: #374151;
        }

        .article-content ul li::before {
            content: '';
            position: absolute;
            left: 4px;
            top: 11px;
            width: 8px;
            height: 8px;
            border-radius: 2px;
            background: var(--primary-light);
            transform: rotate(45deg);
        }

        .article-content ol {
            list-style: decimal;
            padding-left: 24px;
            margin-bottom: 20px;
        }

        .article-content ol li {
            margin-bottom: 8px;
            padding-left: 6px;
            color: #374151;
        }

        .article-content blockquote {
            border-left: 3px solid var(--primary);
            background: #F9FAFB;
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 12px 12px 0;
            color: #4B5563;
            font-style: normal;
            line-height: 1.7;
        }

        .article-content blockquote p {
            margin-bottom: 0;
        }

        .article-content img {
            border-radius: 12px;
            margin: 28px auto;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid #E5E7EB;
        }

        .article-content th {
            background: #F9FAFB;
            padding: 12px 16px;
            border: 1px solid #E5E7EB;
            text-align: left;
            font-weight: 600;
            color: #1F2937;
        }

        .article-content td {
            padding: 10px 16px;
            border: 1px solid #E5E7EB;
            color: #4B5563;
        }

        .article-content hr {
            border: none;
            border-top: 1px solid #E5E7EB;
            margin: 32px 0;
        }

        /* ===== Related Cards ===== */
        .related-card {
            transition: all 0.3s ease;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(15, 118, 110, 0.2) !important;
        }

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

        .related-card .related-cover {
            overflow: hidden;
        }

        .related-card .related-cover img {
            transition: transform 0.4s ease;
        }

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

        .related-title {
            transition: color 0.2s ease;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(to bottom, rgba(17, 24, 39, 0.92), rgba(17, 24, 39, 0.96)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        @media (max-width: 768px) {
            .cta-section {
                background-attachment: scroll;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            font-size: 14px;
        }

        .site-footer a {
            transition: color 0.2s ease;
        }

        .site-footer a:hover {
            color: #fff;
        }

        /* ===== Reveal Animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

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

        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
            html {
                scroll-behavior: auto;
            }
        }

        /* ===== Focus Visible ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Mobile Search Panel ===== */
        .mobile-search-panel {
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, opacity 0.3s ease;
        }

        .mobile-search-panel.open {
            max-height: 120px;
            opacity: 1;
        }

        /* ===== Mobile Menu ===== */
        .mobile-menu-panel {
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, opacity 0.3s ease;
        }

        .mobile-menu-panel.open {
            max-height: 400px;
            opacity: 1;
        }

/* roulang page: category1 */
:root {
            --primary: #0F766E;
            --primary-light: #14B8A6;
            --primary-dark: #115E59;
            --accent: #C29B62;
            --accent-light: #D4AF6A;
            --bg-page: #F6F5F2;
            --bg-card: #FFFFFF;
            --bg-dark: #111827;
            --text-main: #1F2937;
            --text-secondary: #6B7280;
            --text-footer: #9CA3AF;
            --border-light: #E5E7EB;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
            --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--bg-page);
            color: var(--text-main);
            line-height: 1.6;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input,
        select,
        textarea {
            font-family: inherit;
        }
        .container-x {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: box-shadow 0.3s ease;
            border-bottom: 1px solid rgba(229, 231, 235, 0.5);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            padding: 6px 2px;
            transition: color 0.25s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--primary);
            color: #fff;
            font-weight: 500;
            border-radius: 999px;
            padding: 10px 22px;
            transition: all 0.25s ease;
            border: 1px solid transparent;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(15, 118, 110, 0.25);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 500;
            border: 1.5px solid rgba(255, 255, 255, 0.7);
            border-radius: 999px;
            padding: 10px 22px;
            transition: all 0.25s ease;
        }
        .btn-outline:hover {
            border-color: var(--primary-light);
            color: var(--primary-light);
            transform: translateY(-1px);
            background: rgba(20, 184, 166, 0.1);
        }
        .btn-outline:active {
            transform: translateY(0);
            background: rgba(20, 184, 166, 0.16);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 3px;
        }
        .card-hover {
            transition: all 0.3s ease;
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(15, 118, 110, 0.25);
        }
        .badge {
            display: inline-block;
            font-size: 13px;
            padding: 3px 14px;
            border-radius: 999px;
            background: #F0FDFA;
            color: var(--primary);
            border: 1px solid #99F6E4;
            font-weight: 500;
        }
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .stat-number {
            font-variant-numeric: tabular-nums;
            font-family: "Inter", "DIN Alternate", "Arial Narrow", sans-serif;
        }
        .chip {
            display: inline-flex;
            align-items: center;
            padding: 5px 16px;
            border-radius: 999px;
            background: #fff;
            border: 1px solid #E5E7EB;
            color: #374151;
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: all 0.2s ease;
            cursor: pointer;
        }
        .chip:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .chip.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .faq-item {
            border: 1px solid #E5E7EB;
            border-radius: 12px;
            background: #fff;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item.open {
            border-color: var(--primary);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-main);
            transition: background-color 0.2s ease;
        }
        .faq-question:hover {
            background-color: #F9FAFB;
        }
        .faq-icon {
            transition: transform 0.3s ease;
            flex-shrink: 0;
            color: var(--primary);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-answer-inner {
            padding: 0 20px 20px 20px;
            font-size: 15px;
            color: #6B7280;
            line-height: 1.75;
            border-left: 2px solid var(--primary);
            margin-left: 20px;
            padding-left: 16px;
        }
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(17, 24, 39, 0.5);
            backdrop-filter: blur(4px);
            z-index: 100;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            padding: 20px;
        }
        .modal-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        .modal-box {
            background: #fff;
            border-radius: 20px;
            width: 100%;
            max-width: 520px;
            max-height: 90vh;
            overflow-y: auto;
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
            transform: translateY(20px) scale(0.98);
            transition: transform 0.3s ease;
        }
        .modal-overlay.active .modal-box {
            transform: translateY(0) scale(1);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .hero-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(17, 24, 39, 0.88), rgba(17, 24, 39, 0.42) 60%, rgba(17, 24, 39, 0.3));
        }
        .cover-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 16px;
            transition: transform 0.5s ease;
        }
        .img-zoom:hover .cover-image {
            transform: scale(1.04);
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            .reveal {
                opacity: 1;
                transform: none;
            }
            html {
                scroll-behavior: auto;
            }
        }
        .mobile-menu {
            display: none;
        }
        @media (max-width: 768px) {
            .container-x {
                padding-left: 16px;
                padding-right: 16px;
            }
            .mobile-menu.open {
                display: block;
                border-top: 1px solid #F3F4F6;
                background: #fff;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            }
            .mobile-menu.open a {
                display: block;
                padding: 14px 24px;
                font-size: 15px;
                color: #374151;
                border-bottom: 1px solid #F9FAFB;
            }
            .mobile-menu.open a.active {
                color: var(--primary);
                font-weight: 600;
            }
            .mobile-menu.open a:hover {
                background: #F9FAFB;
                color: var(--primary);
            }
        }
        @media (max-width: 640px) {
            .hero-title {
                font-size: 32px !important;
                line-height: 1.3 !important;
            }
            .section-title {
                font-size: 26px !important;
                line-height: 1.35 !important;
            }
        }
        .divider-dot::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--accent);
            margin-right: 6px;
            vertical-align: middle;
        }
        .icon-circle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: #F0FDFA;
            color: var(--primary);
            transition: all 0.3s ease;
        }
        .card-hover:hover .icon-circle {
            transform: scale(1.08);
            background: var(--primary);
            color: #fff;
        }
        .step-num {
            font-family: "Inter", "DIN Alternate", sans-serif;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: #F0FDFA;
            border: 1px solid #99F6E4;
            border-radius: 999px;
            padding: 2px 12px;
            display: inline-block;
        }
        .stat-card {
            border-left: 3px solid var(--accent);
            padding-left: 20px;
        }
        .section-label {
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--primary);
            text-transform: uppercase;
            margin-bottom: 8px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--accent-light);
            border-radius: 2px;
        }