/* roulang page: index */
:root {
            --primary-50: #EBF5F0;
            --primary-100: #CDE9DF;
            --primary-200: #9ED4C3;
            --primary-300: #71BFA9;
            --primary-400: #3E9C84;
            --primary-500: #227A63;
            --primary-600: #1B5E4D;
            --primary-700: #12463A;
            --primary-800: #10352C;
            --primary-900: #0B2E26;
            --accent-50: #FBF3E7;
            --accent-100: #F4E0C3;
            --accent-400: #E5A54B;
            --accent-500: #D18C33;
            --accent-600: #B66F1F;
            --neutral-0: #FFFFFF;
            --neutral-50: #F6F3EE;
            --neutral-100: #EDE8DF;
            --neutral-400: #8C8A85;
            --neutral-700: #3D403E;
            --neutral-900: #161A19;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            background-color: var(--neutral-50);
            color: var(--neutral-900);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        .tabular-nums {
            font-variant-numeric: tabular-nums;
        }

        .hero-gradient {
            background: linear-gradient(135deg, #0B2E26 0%, #12463A 50%, #227A63 100%);
        }

        .soft-gradient {
            background: linear-gradient(120deg, #CDE9DF 0%, #FBF3E7 100%);
        }

        .accent-gradient {
            background: linear-gradient(135deg, #D18C33 0%, #E5A54B 100%);
        }

        .hero-bg-layer {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 1;
        }

        .hero-grid-overlay {
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(34, 122, 99, 0.12) 1px, transparent 1px),
                linear-gradient(90deg, rgba(34, 122, 99, 0.12) 1px, transparent 1px);
            background-size: 44px 44px;
            z-index: 2;
        }

        .hero-ring {
            position: absolute;
            border-radius: 9999px;
            border: 1px solid rgba(113, 191, 169, 0.25);
            z-index: 2;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #D18C33 0%, #E5A54B 100%);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 12px;
            box-shadow: 0 8px 24px rgba(209, 140, 51, 0.35);
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary:hover {
            filter: brightness(1.08);
            transform: translateY(-1px);
            box-shadow: 0 12px 28px rgba(209, 140, 51, 0.42);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.15);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--primary-500);
            outline-offset: 4px;
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 12px;
            background: transparent;
            transition: all 0.25s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }

        .btn-outline-light:focus-visible {
            outline: 2px solid var(--accent-400);
            outline-offset: 4px;
        }

        .btn-outline-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 1px solid var(--neutral-100);
            color: var(--neutral-700);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 12px;
            background: transparent;
            transition: all 0.25s ease;
            cursor: pointer;
        }

        .btn-outline-dark:hover {
            background: var(--neutral-50);
            border-color: var(--primary-300);
            color: var(--primary-600);
        }

        .nav-card {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            border-radius: 10px;
            background: var(--primary-50);
            color: var(--primary-700);
            font-weight: 600;
            font-size: 14px;
            transition: all 0.25s ease;
            position: relative;
            text-decoration: none;
        }

        .nav-card:hover {
            background: #fff;
            box-shadow: 0 6px 20px rgba(27, 94, 77, 0.10);
            color: var(--primary-600);
        }

        .nav-card.active {
            background: #fff;
            box-shadow: 0 6px 20px rgba(27, 94, 77, 0.10);
            color: var(--primary-600);
        }

        .nav-card.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary-600);
        }

        .nav-card:focus-visible {
            outline: 2px solid var(--primary-500);
            outline-offset: 2px;
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: var(--primary-50);
            color: var(--primary-600);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            color: var(--accent-600);
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .section-title {
            font-size: clamp(1.75rem, 3vw, 2.25rem);
            font-weight: 800;
            line-height: 1.3;
            color: var(--neutral-900);
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 16px;
            color: var(--neutral-400);
            line-height: 1.75;
            max-width: 640px;
        }

        .feature-card {
            position: relative;
            background: #fff;
            border-radius: 20px;
            padding: 32px 24px;
            border: 1px solid var(--neutral-100);
            box-shadow: 0 6px 20px rgba(27, 94, 77, 0.08);
            transition: all 0.35s ease;
            overflow: hidden;
        }

        .feature-card:hover {
            box-shadow: 0 12px 28px rgba(27, 94, 77, 0.16);
            transform: translateY(-4px);
        }

        .feature-card.featured {
            transform: translateY(-20px);
            border: 2px solid var(--primary-300);
            box-shadow: 0 16px 36px rgba(27, 94, 77, 0.16);
        }

        .feature-card.featured:hover {
            transform: translateY(-24px);
        }

        .feature-number {
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 72px;
            font-weight: 900;
            line-height: 1;
            color: var(--accent-400);
            opacity: 0.16;
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        .faq-item {
            background: #fff;
            border-radius: 12px;
            border: 1px solid var(--neutral-100);
            padding: 20px 24px;
            transition: all 0.3s ease;
        }

        .faq-item.open {
            box-shadow: 0 6px 20px rgba(27, 94, 77, 0.08);
            border-color: var(--primary-200);
        }

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

        .faq-answer.open {
            max-height: 400px;
        }

        .faq-icon {
            transition: transform 0.3s ease;
            color: var(--primary-500);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--accent-500);
        }

        .fixed-convert-desk {
            position: fixed;
            bottom: 32px;
            right: 32px;
            z-index: 40;
            max-width: 340px;
            border-radius: 20px;
            background: linear-gradient(135deg, #0B2E26 0%, #12463A 50%, #227A63 100%);
            padding: 24px;
            box-shadow: 0 20px 44px rgba(11, 46, 38, 0.3);
            transition: all 0.4s ease;
        }

        .fixed-convert-desk.hide {
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
        }

        .mobile-convert-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 40;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            border-top: 1px solid var(--neutral-100);
            padding: 10px 16px;
            display: none;
            transition: transform 0.3s ease;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
        }

        .mobile-convert-bar.hide {
            transform: translateY(100%);
        }

        .img-cover {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: inherit;
        }

        .img-placeholder {
            background: linear-gradient(120deg, var(--primary-100), var(--accent-50));
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 120px;
        }

        .stat-number {
            font-variant-numeric: tabular-nums;
            font-size: 40px;
            font-weight: 900;
            line-height: 1;
        }

        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .line-clamp-1 {
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-empty {
            border: 2px dashed var(--neutral-100);
            border-radius: 16px;
            padding: 48px 24px;
            text-align: center;
            background: var(--neutral-50);
        }

        .footer-link {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            line-height: 2.2;
            transition: color 0.2s ease;
            text-decoration: none;
        }

        .footer-link:hover {
            color: var(--accent-400);
        }

        .mobile-menu-panel {
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 12px 28px rgba(27, 94, 77, 0.16);
            border: 1px solid var(--neutral-100);
            padding: 16px;
        }

        @media (max-width: 767px) {
            .fixed-convert-desk {
                display: none;
            }

            .mobile-convert-bar {
                display: flex;
                align-items: center;
                justify-content: space-between;
            }

            .feature-card.featured {
                transform: translateY(0);
            }

            .feature-card.featured:hover {
                transform: translateY(-4px);
            }

            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (min-width: 768px) {
            .hero-h1 {
                font-size: clamp(2.4rem, 5vw, 3.8rem);
            }
        }

        .faq-divider {
            height: 1px;
            background: var(--neutral-100);
            margin: 12px 0 4px;
        }

        .scene-card {
            border-radius: 20px;
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--neutral-100);
            box-shadow: 0 6px 20px rgba(27, 94, 77, 0.08);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }

        .scene-card:hover {
            box-shadow: 0 16px 36px rgba(27, 94, 77, 0.14);
        }

/* roulang page: article */
:root {
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: #F6F3EE;
            color: #3D403E;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .nav-card {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.625rem 1rem;
            border-radius: 10px;
            background: #EBF5F0;
            font-size: 0.875rem;
            font-weight: 600;
            color: #12463A;
            transition: all 0.25s ease;
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-card:hover {
            background: #FFFFFF;
            box-shadow: 0 6px 20px rgba(27, 94, 77, 0.10);
            transform: translateY(-1px);
            color: #1B5E4D;
            border-bottom: 2px solid #227A63;
            border-radius: 10px 10px 8px 8px;
        }
        .nav-card.active {
            background: #FFFFFF;
            box-shadow: 0 6px 20px rgba(27, 94, 77, 0.08);
            color: #0B2E26;
            border-bottom: 2px solid #227A63;
            border-radius: 10px 10px 8px 8px;
            font-weight: 700;
        }
        .nav-card:focus-visible {
            outline: 2px solid #227A63;
            outline-offset: 2px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, #B66F1F, #E5A54B);
            color: #FFFFFF;
            font-weight: 700;
            font-size: 0.875rem;
            border-radius: 12px;
            padding: 0.75rem 1.25rem;
            box-shadow: 0 8px 24px rgba(209, 140, 51, 0.35);
            transition: all 0.25s ease;
            text-decoration: none;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            filter: brightness(1.08);
            box-shadow: 0 10px 28px rgba(209, 140, 51, 0.45);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.18);
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 2px solid #227A63;
            outline-offset: 4px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            border: 1px solid #8C8A85;
            color: #3D403E;
            font-weight: 600;
            font-size: 0.875rem;
            border-radius: 12px;
            padding: 0.75rem 1.25rem;
            transition: all 0.25s ease;
            text-decoration: none;
        }
        .btn-ghost:hover {
            background: #F6F3EE;
            border-color: #3D403E;
        }
        .footer-link {
            display: block;
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            padding: 0.25rem 0;
            transition: color 0.2s ease;
        }
        .footer-link:hover {
            color: #E5A54B;
        }
        .breadcrumb {
            font-size: 0.75rem;
            color: #8C8A85;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: #227A63;
            text-decoration: none;
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: #12463A;
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .pill-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            background: #EBF5F0;
            color: #1B5E4D;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.325rem 0.875rem;
            border-radius: 999px;
            text-decoration: none;
            transition: all 0.2s ease;
        }
        .pill-primary:hover {
            background: #CDE9DF;
            color: #0B2E26;
        }
        .tag-pill {
            display: inline-flex;
            align-items: center;
            background: #F6F3EE;
            border: 1px solid #EDE8DF;
            color: #3D403E;
            font-size: 0.75rem;
            font-weight: 500;
            padding: 0.25rem 0.875rem;
            border-radius: 999px;
            text-decoration: none;
            transition: all 0.2s ease;
        }
        .tag-pill:hover {
            background: #EBF5F0;
            border-color: #71BFA9;
            color: #12463A;
        }
        .prev-next-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.8125rem;
            font-weight: 600;
            color: #1B5E4D;
            padding: 0.625rem 1.125rem;
            background: #FFFFFF;
            border: 1px solid #EDE8DF;
            border-radius: 10px;
            text-decoration: none;
            transition: all 0.25s ease;
        }
        .prev-next-link:hover {
            background: #EBF5F0;
            border-color: #71BFA9;
            box-shadow: 0 6px 20px rgba(27, 94, 77, 0.08);
        }
        .article-content {
            font-size: 1rem;
            color: #3D403E;
        }
        .article-content p {
            margin-bottom: 1.5em;
            line-height: 1.8;
        }
        .article-content h2 {
            font-size: 1.375rem;
            font-weight: 800;
            color: #0B2E26;
            margin-top: 2rem;
            margin-bottom: 1rem;
            padding-left: 0.875rem;
            border-left: 4px solid #71BFA9;
            line-height: 1.35;
        }
        .article-content h3 {
            font-size: 1.125rem;
            font-weight: 700;
            color: #12463A;
            margin-top: 1.75rem;
            margin-bottom: 0.875rem;
            padding-left: 0.625rem;
            border-left: 3px solid #E5A54B;
            line-height: 1.4;
        }
        .article-content h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #1B5E4D;
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
        }
        .article-content a {
            color: #227A63;
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color 0.2s;
        }
        .article-content a:hover {
            color: #12463A;
        }
        .article-content blockquote {
            border-left: 4px solid #71BFA9;
            background: #EBF5F0;
            padding: 1rem 1.25rem;
            border-radius: 0 12px 12px 0;
            margin: 1.75rem 0;
            color: #12463A;
            line-height: 1.75;
        }
        .article-content img {
            border-radius: 16px;
            max-width: 100%;
            height: auto;
            box-shadow: 0 6px 20px rgba(27, 94, 77, 0.10);
            margin: 1.75rem 0;
            display: block;
        }
        .article-content pre {
            background: #0B2E26;
            color: #F6F3EE;
            padding: 1.25rem;
            border-radius: 12px;
            overflow-x: auto;
            font-size: 0.875rem;
            line-height: 1.7;
            margin: 1.75rem 0;
            box-shadow: 0 4px 16px rgba(11, 46, 38, 0.18);
        }
        .article-content code {
            background: #CDE9DF;
            color: #12463A;
            padding: 0.2rem 0.5rem;
            border-radius: 6px;
            font-size: 0.875em;
            font-family: "SF Mono", "Menlo", "Consolas", monospace;
        }
        .article-content pre code {
            background: transparent;
            color: inherit;
            padding: 0;
            font-size: inherit;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.875rem;
            margin: 1.75rem 0;
            background: #FFFFFF;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(27, 94, 77, 0.06);
            border: 1px solid #EDE8DF;
        }
        .article-content th {
            background: #EBF5F0;
            color: #0B2E26;
            font-weight: 700;
            padding: 0.75rem 1rem;
            text-align: left;
            border-bottom: 2px solid #CDE9DF;
        }
        .article-content td {
            padding: 0.75rem 1rem;
            border-bottom: 1px solid #F0ECE4;
            line-height: 1.6;
        }
        .article-content tr:last-child td {
            border-bottom: none;
        }
        .article-content ul,
        .article-content ol {
            margin: 1.5rem 0;
            padding-left: 1.5rem;
            line-height: 1.8;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .article-content li::marker {
            color: #227A63;
            font-weight: 600;
        }
        .article-content strong {
            font-weight: 700;
            color: #0B2E26;
            background: linear-gradient(transparent 55%, #CDE9DF 55%);
            padding: 0 0.1em;
        }
        .related-card {
            display: block;
            background: #FFFFFF;
            border: 1px solid #EDE8DF;
            border-radius: 16px;
            overflow: hidden;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 2px 12px rgba(27, 94, 77, 0.05);
        }
        .related-card:hover {
            box-shadow: 0 12px 28px rgba(27, 94, 77, 0.14);
            transform: translateY(-4px);
            border-color: #71BFA9;
        }
        .related-card img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            display: block;
            background: linear-gradient(120deg, #CDE9DF, #FBF3E7);
        }
        @media (max-width: 768px) {
            .article-content table {
                display: block;
                overflow-x: auto;
                white-space: nowrap;
            }
        }
        @media (max-width: 640px) {
            .article-content h2 {
                font-size: 1.25rem;
            }
            .article-content p {
                font-size: 0.9375rem;
                line-height: 1.75;
            }
        }

/* roulang page: category1 */
:root {
            --primary-50: #EBF5F0;
            --primary-100: #CDE9DF;
            --primary-200: #9ED4C3;
            --primary-300: #71BFA9;
            --primary-400: #3E9C84;
            --primary-500: #227A63;
            --primary-600: #1B5E4D;
            --primary-700: #12463A;
            --primary-800: #10352C;
            --primary-900: #0B2E26;
            --accent-50: #FBF3E7;
            --accent-100: #F4E0C3;
            --accent-400: #E5A54B;
            --accent-500: #D18C33;
            --accent-600: #B66F1F;
            --neutral-0: #FFFFFF;
            --neutral-50: #F6F3EE;
            --neutral-100: #EDE8DF;
            --neutral-400: #8C8A85;
            --neutral-700: #3D403E;
            --neutral-900: #161A19;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-card: 0 6px 20px rgba(27, 94, 77, 0.10);
            --shadow-hover: 0 12px 28px rgba(27, 94, 77, 0.16);
            --shadow-cta: 0 8px 24px rgba(209, 140, 51, 0.35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--neutral-50);
            color: var(--neutral-700);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .3s ease;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #E5A54B, #D18C33);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            padding: 12px 26px;
            border-radius: 12px;
            transition: all .3s ease;
            box-shadow: var(--shadow-cta);
            white-space: nowrap;
        }
        .btn-primary:hover {
            filter: brightness(1.07);
            transform: translateY(-1px);
            box-shadow: 0 12px 30px rgba(209, 140, 51, 0.45);
        }
        .btn-primary:active {
            filter: brightness(.95);
            transform: translateY(0);
            box-shadow: inset 0 2px 6px rgba(0, 0, 0, .15);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary-500);
            outline-offset: 4px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, .65);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 12px 26px;
            border-radius: 12px;
            transition: all .3s ease;
            background: transparent;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
        }
        .btn-outline:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 4px;
        }
        .nav-card {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            border-radius: 10px;
            background: var(--primary-50);
            color: var(--primary-700);
            font-size: 14px;
            font-weight: 600;
            transition: all .3s ease;
            position: relative;
        }
        .nav-card:hover {
            background: #fff;
            box-shadow: var(--shadow-card);
            transform: translateY(-1px);
        }
        .nav-card.active {
            background: #fff;
            box-shadow: var(--shadow-card);
            color: var(--primary-800);
        }
        .nav-card.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 0;
            height: 2px;
            background: var(--primary-500);
            border-radius: 2px;
        }
        .nav-card:focus-visible {
            outline: 2px solid var(--primary-500);
            outline-offset: 2px;
        }
        .mobile-menu-panel {
            background: rgba(255, 255, 255, .97);
            border: 1px solid var(--neutral-100);
            border-radius: 16px;
            box-shadow: var(--shadow-hover);
            padding: 12px;
        }
        .footer-link {
            display: block;
            color: rgba(255, 255, 255, .65);
            font-size: 14px;
            padding: 6px 0;
            transition: color .3s ease;
        }
        .footer-link:hover {
            color: var(--accent-400);
        }
        .section-padding {
            padding: 76px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2rem);
            font-weight: 800;
            color: var(--primary-900);
            line-height: 1.3;
            text-align: center;
            margin-bottom: 14px;
        }
        .section-subtitle {
            color: var(--neutral-400);
            font-size: 15px;
            max-width: 560px;
            margin: 0 auto;
            text-align: center;
        }
        .section-line {
            width: 56px;
            height: 4px;
            border-radius: 99px;
            background: linear-gradient(90deg, #D18C33, #E5A54B);
            margin: 0 auto 18px;
        }
        .help-card {
            background: #fff;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--neutral-100);
            box-shadow: 0 4px 18px rgba(27, 94, 77, .08);
            transition: all .35s ease;
            display: flex;
            flex-direction: column;
        }
        .help-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-5px);
        }
        .help-card .card-body {
            padding: 26px 26px 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .help-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--primary-50);
            color: var(--primary-600);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
        }
        .card-link {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-500);
            font-weight: 600;
            font-size: 14px;
            padding-top: 16px;
            transition: gap .3s ease;
        }
        .card-link:hover {
            gap: 10px;
            color: var(--accent-600);
        }
        .step-card {
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--neutral-100);
            box-shadow: 0 4px 14px rgba(27, 94, 77, .06);
            padding: 30px 22px;
            text-align: center;
            transition: all .3s ease;
            position: relative;
        }
        .step-card:hover {
            box-shadow: 0 10px 24px rgba(27, 94, 77, .13);
            transform: translateY(-3px);
        }
        .step-num {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 4px 10px rgba(16, 53, 44, .25);
        }
        .faq-item {
            background: #fff;
            border-radius: 14px;
            border: 1px solid var(--neutral-100);
            padding: 24px 26px;
            box-shadow: 0 4px 14px rgba(27, 94, 77, .05);
            transition: box-shadow .3s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-item h3 {
            color: var(--primary-800);
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            line-height: 1.5;
        }
        .faq-item h3 .q-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--primary-100);
            color: var(--primary-800);
            font-size: 13px;
            font-weight: 800;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .faq-item p {
            color: var(--neutral-700);
            font-size: 15px;
            line-height: 1.75;
            margin-left: 40px;
            margin-top: 8px;
        }
        .faq-item p .a-label {
            font-weight: 700;
            color: var(--accent-500);
            margin-right: 6px;
        }
        .cta-card {
            background: linear-gradient(135deg, #0B2E26 0%, #12463A 50%, #227A63 100%);
            border-radius: 24px;
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            border: 2px solid rgba(229, 165, 75, .2);
        }
        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            border: 2px solid rgba(229, 165, 75, .15);
        }
        .cta-card>* {
            position: relative;
            z-index: 1;
        }
        .data-value {
            font-size: 40px;
            font-weight: 900;
            color: var(--primary-700);
            line-height: 1.1;
            font-variant-numeric: tabular-nums;
        }
        @media (max-width: 768px) {
            .data-value {
                font-size: 32px;
            }
        }
        .hero-wrap {
            position: relative;
            background: linear-gradient(135deg, #0B2E26 0%, #12463A 45%, #227A63 100%);
        }
        .mini-panel {
            background: rgba(255, 255, 255, .96);
            border: 1px solid rgba(255, 255, 255, .6);
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            padding: 14px 18px;
            transition: all .3s ease;
        }
        .mini-panel:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .stat-chip {
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 999px;
            padding: 8px 18px;
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            backdrop-filter: blur(4px);
        }
        .stat-chip i {
            color: var(--accent-400);
        }
        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, .8);
            background: rgba(255, 255, 255, .1);
            border-radius: 999px;
            padding: 8px 18px;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, .12);
        }
        .breadcrumb a:hover {
            color: var(--accent-400);
        }
        .breadcrumb i {
            font-size: 10px;
            color: rgba(255, 255, 255, .6);
        }
        @media (max-width: 520px) {
            .section-padding {
                padding: 40px 0;
            }
            .cta-card {
                padding: 36px 20px;
                border-radius: 18px;
            }
            .faq-item {
                padding: 20px 18px;
            }
            .faq-item p {
                margin-left: 0;
            }
            .help-card .card-body {
                padding: 20px;
            }
            .step-card {
                padding: 22px 16px;
            }
        }

/* roulang page: category2 */
:root {
            --primary-50: #EBF5F0;
            --primary-100: #CDE9DF;
            --primary-200: #9ED4C3;
            --primary-300: #71BFA9;
            --primary-400: #3E9C84;
            --primary-500: #227A63;
            --primary-600: #1B5E4D;
            --primary-700: #12463A;
            --primary-800: #10352C;
            --primary-900: #0B2E26;
            --accent-50: #FBF3E7;
            --accent-100: #F4E0C3;
            --accent-400: #E5A54B;
            --accent-500: #D18C33;
            --accent-600: #B66F1F;
            --neutral-0: #FFFFFF;
            --neutral-50: #F6F3EE;
            --neutral-100: #EDE8DF;
            --neutral-400: #8C8A85;
            --neutral-700: #3D403E;
            --neutral-900: #161A19;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-card: 0 6px 20px rgba(27, 94, 77, 0.10);
            --shadow-hover: 0 12px 28px rgba(27, 94, 77, 0.16);
            --shadow-cta: 0 8px 24px rgba(209, 140, 51, 0.35);
            --gradient-main: linear-gradient(135deg, #0B2E26 0%, #12463A 55%, #227A63 100%);
            --gradient-soft: linear-gradient(120deg, #CDE9DF 0%, #FBF3E7 100%);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background-color: #F6F3EE;
            color: #161A19;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: all .25s ease; }
        button { font-family: inherit; border: none; background: none; cursor: pointer; }
        input, select, textarea { font-family: inherit; }

        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-card {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            border-radius: 10px;
            background: var(--primary-50);
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-700);
            transition: all .25s ease;
            white-space: nowrap;
        }
        .nav-card:hover {
            background: #fff;
            box-shadow: var(--shadow-card);
            border-bottom: 2px solid var(--primary-600);
            border-bottom-left-radius: 10px;
            border-bottom-right-radius: 10px;
            border-bottom-left-radius: 10px;
            border-bottom-right-radius: 10px;
            transform: translateY(-1px);
        }
        .nav-card.active {
            background: #fff;
            box-shadow: var(--shadow-card);
            border-bottom: 2px solid var(--primary-600);
            color: var(--primary-900);
        }
        .nav-card:focus-visible,
        .btn-primary:focus-visible,
        .btn-outline:focus-visible,
        .footer-link:focus-visible,
        .faq-toggle:focus-visible,
        .mobile-menu-panel a:focus-visible {
            outline: 2px solid var(--primary-500);
            outline-offset: 3px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #D18C33 0%, #B66F1F 100%);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: 12px;
            transition: all .25s ease;
            white-space: nowrap;
            box-shadow: var(--shadow-cta);
        }
        .btn-primary:hover {
            filter: brightness(1.08);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(209, 140, 51, 0.42);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.22);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 1.5px solid var(--neutral-100);
            background: transparent;
            color: var(--neutral-700);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: 12px;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: var(--neutral-50);
            border-color: var(--primary-400);
            color: var(--primary-600);
        }
        .btn-outline:active {
            background: var(--neutral-100);
        }
        .btn-primary.btn-light {
            background: #fff;
            color: var(--primary-700);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.18);
        }
        .btn-primary.btn-light:hover {
            background: var(--neutral-50);
            box-shadow: 0 10px 26px rgba(255, 255, 255, 0.24);
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: var(--primary-50);
            color: var(--primary-600);
        }

        .mobile-menu-panel {
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            border-radius: 16px;
            border: 1px solid var(--neutral-100);
            box-shadow: var(--shadow-hover);
            padding: 16px;
        }

        .footer-link {
            display: block;
            color: rgba(255, 255, 255, 0.72);
            font-size: 14px;
            padding: 5px 0;
            transition: all .25s ease;
        }
        .footer-link:hover {
            color: white;
            padding-left: 4px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--neutral-100);
            border-radius: 12px;
            padding: 20px 24px;
            transition: box-shadow .25s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-icon {
            position: relative;
            width: 22px;
            height: 22px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--primary-50);
            transition: transform .3s ease;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--primary-600);
            border-radius: 2px;
            transition: all .3s ease;
        }
        .faq-icon::before {
            width: 10px;
            height: 2px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .faq-icon::after {
            width: 2px;
            height: 10px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .faq-item.active .faq-icon {
            background: var(--primary-100);
        }
        .faq-item.active .faq-icon::after {
            transform: translate(-50%, -50%) rotate(90deg);
            opacity: 0;
        }
        .faq-item.active .faq-icon::before {
            transform: translate(-50%, -50%) rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 500px;
            padding-top: 16px;
        }

        .float-card {
            transition: transform .4s ease, opacity .4s ease;
        }
        .float-card.hidden-float {
            transform: translateY(120%);
            opacity: 0;
            pointer-events: none;
        }

        .stat-number {
            font-variant-numeric: tabular-nums;
            font-feature-settings: "tnum";
        }

        .service-card {
            transition: all .3s ease;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-200);
        }

        .step-card {
            position: relative;
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--neutral-100);
            padding: 28px 24px;
            transition: all .3s ease;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-card::before {
            content: '';
            position: absolute;
            top: -10px;
            left: 24px;
            width: 36px;
            height: 2px;
            background: var(--accent-400);
            border-radius: 2px;
        }

        .table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--neutral-100);
            background: #fff;
            box-shadow: var(--shadow-card);
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }
        .table-wrap th {
            background: var(--primary-900);
            color: #fff;
            font-weight: 700;
            padding: 16px 20px;
            text-align: left;
            white-space: nowrap;
        }
        .table-wrap td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--neutral-100);
            vertical-align: top;
            line-height: 1.7;
        }
        .table-wrap tr:last-child td {
            border-bottom: none;
        }
        .table-wrap tr:hover td {
            background: var(--primary-50);
        }

        .hero-bg {
            background: var(--gradient-main);
            position: relative;
            overflow: hidden;
        }
        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .hero-grid-overlay {
            position: absolute;
            inset: 0;
            background-image: 
                linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
            background-size: 44px 44px;
            pointer-events: none;
        }
        .hero-ring {
            position: absolute;
            border-radius: 50%;
            border: 1px solid rgba(229, 165, 75, 0.28);
            pointer-events: none;
        }
        .cta-card-bg {
            background: var(--gradient-main);
            position: relative;
            overflow: hidden;
        }
        .cta-card-bg::after {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            border: 1.5px solid rgba(229, 165, 75, 0.35);
        }
        .cta-card-bg::before {
            content: '';
            position: absolute;
            right: 10px;
            top: 40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            border: 1px solid rgba(255,255,255,0.15);
        }

        .section-title-bar {
            width: 44px;
            height: 4px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--accent-400), var(--accent-600));
        }

        .feature-card {
            position: relative;
            overflow: hidden;
        }
        .feature-card .feature-num {
            position: absolute;
            top: -14px;
            right: 4px;
            font-size: 88px;
            font-weight: 900;
            color: var(--accent-400);
            opacity: 0.13;
            line-height: 1;
            pointer-events: none;
            font-variant-numeric: tabular-nums;
        }

        .timeline-dot {
            position: relative;
            padding-left: 24px;
        }
        .timeline-dot::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent-400);
            box-shadow: 0 0 0 4px rgba(229, 165, 75, 0.2);
        }

        @media (max-width: 768px) {
            .container-main {
                padding: 0 16px;
            }
            .feature-card .feature-num {
                font-size: 64px;
                top: -8px;
            }
            .btn-primary, .btn-outline {
                padding: 11px 20px;
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            body {
                line-height: 1.65;
            }
            .container-main {
                padding: 0 14px;
            }
            .faq-item {
                padding: 16px 18px;
            }
            .step-card {
                padding: 22px 18px;
            }
        }