/* roulang page: index */
:root {
            --primary: #1E7F8E;
            --primary-dark: #165C68;
            --primary-light: #EAF3F5;
            --accent: #E8622A;
            --bg: #F5F8FA;
            --card-bg: #FFFFFF;
            --text-main: #16282F;
            --text-secondary: #4C6270;
            --text-muted: #7A8F9C;
            --border: #E3EBEF;
            --footer-bg: #12343E;
            --footer-text: #C9D8DE;
            --success: #3C8C5A;
            --radius-sm: 8px;
            --radius-md: 12px;
            --shadow-sm: 0 2px 8px rgba(18, 52, 62, 0.06);
            --shadow-hover: 0 10px 28px rgba(18, 52, 62, 0.12);
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            --space-section: clamp(4rem, 8vw, 7rem);
            --container: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input {
            font-family: inherit;
        }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: none;
            border-bottom: 1px solid transparent;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(18, 52, 62, 0.06);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            text-decoration: none;
        }

        .nav-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, #2A9AAC 100%);
            color: #fff;
            font-weight: 800;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            letter-spacing: 0.5px;
        }

        .nav-logo-text {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
        }

        .nav-center {
            display: flex;
            align-items: center;
            gap: 32px;
            margin-left: 24px;
        }

        .nav-link {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
        }

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

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

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

        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-left: auto;
            flex-shrink: 0;
        }

        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #F5F8FA;
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            padding: 8px 14px;
            width: 200px;
            transition: border-color 0.2s, background-color 0.2s;
        }

        .nav-search i {
            color: var(--text-muted);
            font-size: 0.875rem;
        }

        .nav-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 0.875rem;
            width: 100%;
            color: var(--text-main);
        }

        .nav-search:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(30, 127, 142, 0.12);
        }

        .nav-login {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
        }

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

        .btn-primary-nav {
            background: var(--primary);
            color: #fff;
            font-size: 0.9375rem;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: background-color 0.2s, transform 0.2s;
            white-space: nowrap;
        }

        .btn-primary-nav:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            position: relative;
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-main);
            margin: 5px auto;
            transition: all 0.3s;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: #fff;
            padding: 20px 24px 32px;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 8px 24px rgba(18, 52, 62, 0.08);
            flex-direction: column;
            gap: 18px;
            z-index: 99;
        }

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

        .mobile-menu .nav-link {
            font-size: 1rem;
            padding: 8px 0;
        }

        .mobile-menu .nav-login {
            font-size: 1rem;
            padding: 8px 0;
        }

        .mobile-menu .btn-primary-nav {
            text-align: center;
            margin-top: 8px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 160px 0 90px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, rgba(18, 52, 62, 0.85) 0%, rgba(18, 52, 62, 0.55) 50%, rgba(18, 52, 62, 0.2) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 680px;
        }

        .hero-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 20px;
            padding: 5px 16px;
            font-size: 0.8125rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 3.75rem);
            font-weight: 800;
            line-height: 1.15;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-sub {
            font-size: 1.125rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 36px;
            max-width: 560px;
        }

        .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-hero-primary {
            background: var(--accent);
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            transition: all 0.2s ease;
            border: 1px solid var(--accent);
        }

        .btn-hero-primary:hover {
            background: #d4551f;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 98, 42, 0.3);
        }

        .btn-hero-secondary {
            background: transparent;
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.6);
            transition: all 0.2s ease;
        }

        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 64px;
            padding-top: 32px;
            border-top: 1px dashed rgba(255, 255, 255, 0.3);
            flex-wrap: wrap;
        }

        .hero-stat {
            text-align: left;
        }

        .hero-stat .num {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.2;
            color: #fff;
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.5px;
        }

        .hero-stat .label {
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
            letter-spacing: 0.5px;
        }

        /* ===== Sections common ===== */
        .section {
            padding: var(--space-section) 0;
        }

        .section-alt {
            background: var(--bg);
        }

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

        .section-head .overline {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.8125rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: none;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .overline-bar {
            width: 24px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            display: inline-block;
        }

        .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            letter-spacing: -0.3px;
        }

        .section-head p {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-top: 12px;
            line-height: 1.75;
        }

        /* ===== Brand story ===== */
        .story-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 60px;
            align-items: center;
        }

        .story-image {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .story-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
            transition: transform 0.4s ease;
        }

        .story-image:hover img {
            transform: scale(1.03);
        }

        .story-content .overline {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.8125rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .story-content h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 20px;
            letter-spacing: -0.3px;
        }

        .story-content p {
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.8;
        }

        .story-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 12px;
            font-size: 0.9375rem;
            transition: gap 0.2s ease;
        }

        .story-link:hover {
            gap: 12px;
            text-decoration: underline;
        }

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow 0.3s ease, transform 0.3s ease;
            display: flex;
            flex-direction: column;
        }

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

        .feature-card.large {
            grid-column: span 1;
        }

        .feature-card.small {
            display: grid;
            grid-template-columns: 2fr 3fr;
            gap: 0;
        }

        .feature-card.small .card-image {
            height: 100%;
        }

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

        .feature-card.small .card-image {
            aspect-ratio: auto;
            height: 100%;
            min-height: 180px;
        }

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

        .feature-card:hover .card-image img {
            transform: scale(1.03);
        }

        .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            background: var(--card-bg);
        }

        .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(232, 98, 42, 0.1);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
            width: fit-content;
        }

        .card-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .card-body p {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 16px;
            font-size: 0.8125rem;
            color: var(--text-muted);
            font-variant-numeric: tabular-nums;
        }

        /* ===== News List (CMS) ===== */
        .news-list {
            display: flex;
            flex-direction: column;
        }

        .news-item {
            display: grid;
            grid-template-columns: 80px 1fr auto;
            gap: 24px;
            align-items: center;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: background-color 0.2s;
            text-decoration: none;
        }

        .news-item:hover {
            background: #F7FAFB;
        }

        .news-item:hover .news-arrow i {
            transform: translateX(4px);
        }

        .news-date {
            text-align: center;
            padding-right: 0;
            border-right: 1px solid var(--border);
        }

        .news-date .day {
            font-size: 1.75rem;
            font-weight: 700;
            line-height: 1.1;
            color: var(--text-main);
            font-variant-numeric: tabular-nums;
        }

        .news-date .month {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .news-info {
            min-width: 0;
        }

        .news-info h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-info p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 6px;
            flex-wrap: wrap;
        }

        .news-meta .badge {
            background: rgba(30, 127, 142, 0.1);
            color: var(--primary);
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 500;
        }

        .news-meta time {
            font-size: 0.8125rem;
            color: var(--text-muted);
            font-variant-numeric: tabular-nums;
        }

        .news-arrow {
            font-size: 1rem;
            color: var(--primary);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-light);
            transition: background-color 0.2s, transform 0.2s;
        }

        .news-arrow i {
            transition: transform 0.2s ease;
        }

        .news-empty {
            padding: 48px 24px;
            text-align: center;
            color: var(--text-muted);
            border: 1px dashed var(--border);
            border-radius: var(--radius-md);
            background: #fff;
        }

        .news-empty i {
            font-size: 2rem;
            margin-bottom: 12px;
            opacity: 0.4;
            display: block;
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 0.9375rem;
            color: var(--primary);
            margin-top: 28px;
            transition: gap 0.2s;
        }

        .btn-text:hover {
            gap: 12px;
            text-decoration: underline;
        }

        /* ===== Trust ===== */
        .trust-section {
            border-top: 1px solid var(--border);
        }

        .partners-row {
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 56px;
        }

        .partner-logo {
            width: 160px;
            height: 60px;
            background: #EDF2F5;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-muted);
            transition: background-color 0.2s, color 0.2s;
            border: 1px solid var(--border);
        }

        .partner-logo:hover {
            background: #fff;
            color: var(--primary);
            border-color: var(--primary);
        }

        .testimonials {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border-left: 3px solid var(--accent);
        }

        .testimonial-card p {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            font-style: normal;
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-author .avatar {
            width: 40px;
            height: 40px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.875rem;
        }

        .testimonial-author .name {
            font-weight: 600;
            font-size: 0.9375rem;
        }

        .testimonial-author .title {
            font-size: 0.8125rem;
            color: var(--text-muted);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 0 0 var(--space-section);
        }

        .cta-box {
            background: var(--primary);
            border-radius: var(--radius-md);
            padding: clamp(40px, 7vw, 64px);
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 48px;
            align-items: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='6' height='1'%3E%3Cpath d='M0 0.5h6' stroke='rgba(255,255,255,0.3)' stroke-dasharray='2 2'/%3E%3C/svg%3E");
            background-repeat: repeat-x;
        }

        .cta-box h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .cta-box p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-cta-orange {
            background: var(--accent);
            color: #fff;
            font-size: 1.0625rem;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--accent);
            transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
        }

        .btn-cta-orange:hover {
            background: #d4551f;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        .btn-cta-outline {
            background: transparent;
            color: #fff;
            font-size: 1.0625rem;
            font-weight: 500;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.5);
            transition: all 0.2s;
        }

        .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .cta-subscribe {
            display: flex;
            gap: 12px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .cta-subscribe input {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border: 1px solid rgba(255, 255, 255, 0.4);
            border-radius: var(--radius-sm);
            background: #fff;
            color: var(--text-main);
            font-size: 0.9375rem;
            outline: none;
            transition: box-shadow 0.2s;
        }

        .cta-subscribe input:focus {
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
            border-color: #fff;
        }

        .cta-subscribe input::placeholder {
            color: var(--text-muted);
        }

        .btn-subscribe {
            background: var(--accent);
            color: #fff;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9375rem;
            border: 1px solid var(--accent);
            transition: all 0.2s;
        }

        .btn-subscribe:hover {
            background: #d4551f;
            transform: translateY(-1px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 56px 0 24px;
            margin-top: 40px;
        }

        .footer-top {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 36px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .logo-area .nav-logo-icon {
            width: 32px;
            height: 32px;
        }

        .footer-brand .logo-area .nav-logo-text {
            color: #fff;
            font-size: 1.125rem;
        }

        .footer-brand p {
            font-size: 0.875rem;
            line-height: 1.8;
            color: rgba(201, 216, 222, 0.8);
            margin-bottom: 16px;
        }

        .footer-col h4 {
            font-size: 1rem;
            color: #fff;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul a {
            color: rgba(201, 216, 222, 0.8);
            font-size: 0.875rem;
            transition: color 0.2s;
        }

        .footer-col ul a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .footer-contact p {
            font-size: 0.875rem;
            color: rgba(201, 216, 222, 0.8);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact p i {
            width: 16px;
            color: var(--accent);
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--footer-text);
            transition: background-color 0.2s, color 0.2s;
        }

        .footer-social a:hover {
            background: #fff;
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8125rem;
            color: #7A98A5;
            flex-wrap: wrap;
            gap: 12px;
        }

        /* ===== FAQ preview ===== */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 0;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            transition: background-color 0.2s;
        }

        .faq-question:hover {
            background: #F7FAFB;
        }

        .faq-icon {
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

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

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

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== responsive ===== */
        @media (max-width: 1024px) {
            .nav-center {
                gap: 20px;
                margin-left: 12px;
            }

            .nav-search {
                width: 160px;
            }

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

            .testimonial-card:last-child {
                grid-column: span 2;
            }

            .cta-box {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .nav-wrap {
                height: 64px;
                gap: 12px;
            }

            .nav-center,
            .nav-search,
            .nav-login {
                display: none;
            }

            .nav-toggle {
                display: block;
                order: 3;
            }

            .nav-logo {
                order: 1;
            }

            .nav-right .btn-primary-nav {
                display: none;
            }

            .mobile-menu .nav-login,
            .mobile-menu .btn-primary-nav {
                display: block;
            }

            .hero {
                padding: 130px 0 70px;
            }

            .hero h1 {
                font-size: 2.25rem;
            }

            .hero-sub {
                font-size: 1rem;
            }

            .hero-stats {
                gap: 24px 32px;
                margin-top: 44px;
                padding-top: 24px;
            }

            .hero-stat .num {
                font-size: 1.5rem;
            }

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

            .story-image img {
                aspect-ratio: 16 / 9;
            }

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

            .feature-card.small {
                grid-template-columns: 1fr;
            }

            .feature-card.small .card-image {
                aspect-ratio: 16 / 9;
                min-height: auto;
                height: auto;
            }

            .news-item {
                grid-template-columns: 60px 1fr;
                gap: 14px;
                padding: 16px 0;
            }

            .news-arrow {
                display: none;
            }

            .news-date .day {
                font-size: 1.375rem;
            }

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

            .testimonial-card:last-child {
                grid-column: auto;
            }

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

            .cta-box {
                padding: 32px 24px;
            }

            .cta-subscribe {
                flex-direction: column;
            }

            .cta-subscribe input {
                min-width: auto;
            }

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

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

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

            .btn-cta-orange,
            .btn-cta-outline {
                text-align: center;
                justify-content: center;
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .nav-logo-text {
                font-size: 0.9375rem;
            }

            .hero {
                padding: 120px 0 56px;
            }

            .hero-stats {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .hero-stat .num {
                font-size: 1.25rem;
            }

            .hero-stat .label {
                font-size: 0.75rem;
            }

            .partner-logo {
                width: 45%;
                max-width: 160px;
            }
        }

/* roulang page: article */
:root {
            --primary: #1E7F8E;
            --primary-dark: #165C68;
            --primary-light: #EAF3F5;
            --accent: #E8622A;
            --bg: #F5F8FA;
            --card-bg: #FFFFFF;
            --text: #16282F;
            --text-secondary: #4C6270;
            --text-muted: #7A8F9C;
            --border: #E3EBEF;
            --footer-bg: #12343E;
            --footer-text: #C9D8DE;
            --success: #3C8C5A;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 2px 8px rgba(18,52,62,0.06);
            --shadow-hover: 0 10px 28px rgba(18,52,62,0.12);
            --transition: 0.2s ease;
            --container-max: 1200px;
            --section-space: clamp(4rem, 8vw, 7rem);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(4px);
            border-bottom: 1px solid transparent;
            transition: box-shadow 0.3s, border-color 0.3s;
        }
        .site-header.scrolled {
            border-color: var(--border);
            box-shadow: 0 2px 12px rgba(18, 52, 62, 0.08);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 0.875rem;
            letter-spacing: 0.02em;
            transition: background 0.2s;
        }
        .nav-logo-text {
            font-size: 1.0625rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.01em;
        }
        .nav-center {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            position: relative;
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 2px;
            transition: color 0.2s;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.25s;
        }
        .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);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 8px 14px;
            width: 200px;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .nav-search i {
            font-size: 0.875rem;
            color: var(--text-muted);
        }
        .nav-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 0.875rem;
            color: var(--text);
            width: 100%;
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 127, 142, 0.15);
        }
        .nav-login {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 10px;
            transition: color 0.2s;
        }
        .nav-login:hover {
            color: var(--primary);
        }
        .btn-primary-nav {
            background: var(--primary);
            color: #fff;
            font-size: 0.9375rem;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
        }
        .btn-primary-nav:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(30, 127, 142, 0.28);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            transition: transform 0.25s, opacity 0.25s;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        @media (max-width: 1024px) {
            .nav-search {
                width: 140px;
            }
            .nav-center {
                gap: 16px;
            }
        }
        @media (max-width: 768px) {
            .nav-center,
            .nav-right {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-wrap {
                height: 60px;
            }
            .nav-logo-text {
                font-size: 1rem;
            }
            .mobile-nav {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--card-bg);
                border-bottom: 1px solid var(--border);
                padding: 16px 20px 24px;
                display: none;
                flex-direction: column;
                gap: 4px;
                box-shadow: var(--shadow-hover);
                z-index: 99;
            }
            .mobile-nav.open {
                display: flex;
            }
            .mobile-nav .nav-link {
                padding: 12px 8px;
                font-size: 1rem;
                border-bottom: 1px solid #F0F4F6;
            }
            .mobile-nav .nav-link:last-of-type {
                border-bottom: none;
            }
            .mobile-nav .nav-login {
                margin-top: 8px;
                text-align: center;
                padding: 12px;
                background: var(--bg);
                border-radius: var(--radius-sm);
            }
            .mobile-nav .btn-primary-nav {
                text-align: center;
                justify-content: center;
                margin-top: 10px;
                display: block;
            }
            .mobile-search {
                display: flex;
                align-items: center;
                gap: 8px;
                background: var(--bg);
                border: 1px solid var(--border);
                border-radius: var(--radius-sm);
                padding: 10px 14px;
                margin: 12px 0 6px;
            }
            .mobile-search i {
                color: var(--text-muted);
            }
            .mobile-search input {
                border: none;
                outline: none;
                background: transparent;
                font-size: 0.875rem;
                width: 100%;
            }
        }

        /* ===== Article Page Layout ===== */
        .article-main {
            padding-top: 68px;
            background: var(--bg);
        }

        /* Breadcrumb */
        .article-breadcrumb {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            padding: 18px 0;
        }
        .breadcrumb-wrap {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.875rem;
            color: var(--text-muted);
        }
        .breadcrumb-wrap a {
            color: var(--text-muted);
            transition: color 0.2s;
        }
        .breadcrumb-wrap a:hover {
            color: var(--primary);
        }
        .breadcrumb-wrap .sep {
            color: #C5D3DA;
        }
        .breadcrumb-wrap .current {
            color: var(--text-secondary);
            font-weight: 500;
            max-width: 280px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* Article Hero */
        .article-hero {
            padding: 48px 0 40px;
        }
        .article-hero-inner {
            max-width: 860px;
            margin: 0 auto;
        }
        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(232, 98, 42, 0.1);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 18px;
        }
        .article-title {
            font-size: clamp(1.75rem, 4vw, 2.5rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text);
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: 0.875rem;
            color: var(--text-muted);
            font-variant-numeric: tabular-nums;
            padding-bottom: 28px;
            border-bottom: 1px solid var(--border);
        }
        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta-item i {
            color: var(--primary);
        }
        .article-hero-image {
            margin-top: 32px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            aspect-ratio: 16 / 8;
            background: #E9F0F3;
        }
        .article-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Article Body */
        .article-body-wrap {
            padding-bottom: var(--section-space);
        }
        .article-body {
            max-width: 760px;
            margin: 0 auto;
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: clamp(28px, 5vw, 56px);
        }
        .article-body p {
            font-size: 1rem;
            line-height: 1.85;
            color: var(--text);
            margin-bottom: 1.4em;
            text-align: justify;
        }
        .article-body h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text);
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-top: 1.6em;
            margin-bottom: 0.6em;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 1.8em 0;
        }
        .article-body blockquote {
            border-left: 3px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 22px;
            margin: 1.6em 0;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.7;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }
        .article-body ul,
        .article-body ol {
            margin: 1.2em 0;
            padding-left: 1.5em;
            color: var(--text);
        }
        .article-body li {
            margin-bottom: 0.5em;
            line-height: 1.8;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6em 0;
            font-size: 0.9375rem;
        }
        .article-body table th,
        .article-body table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-body table th {
            background: var(--bg);
            font-weight: 600;
        }
        .article-body a {
            color: var(--primary);
            border-bottom: 1px solid transparent;
            transition: border-color 0.2s;
        }
        .article-body a:hover {
            border-color: var(--primary);
        }

        /* Article Tags */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 0.8125rem;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 20px;
            transition: all 0.2s;
        }
        .article-tags .tag:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* Post Nav */
        .post-nav {
            max-width: 760px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            padding: 0 0 var(--section-space);
        }
        .post-nav-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 22px 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: box-shadow 0.25s, transform 0.25s, border-color 0.25s;
            min-height: 96px;
            position: relative;
        }
        .post-nav-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .post-nav-card.next {
            text-align: right;
            align-items: flex-end;
        }
        .post-nav-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-weight: 600;
            letter-spacing: 0.04em;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .post-nav-card.next .post-nav-label {
            justify-content: flex-end;
        }
        .post-nav-title {
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-nav-card:hover .post-nav-title {
            color: var(--primary);
        }

        /* Related Posts */
        .related-section {
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: clamp(3rem, 6vw, 5rem) 0;
        }
        .related-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 36px;
        }
        .related-title {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-title::before {
            content: "";
            width: 24px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: box-shadow 0.25s, transform 0.25s;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .related-card-img {
            aspect-ratio: 16 / 9;
            background: #E9F0F3;
            overflow: hidden;
        }
        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s;
        }
        .related-card:hover .related-card-img img {
            transform: scale(1.04);
        }
        .related-card-body {
            padding: 20px;
        }
        .related-card-badge {
            display: inline-block;
            background: rgba(232, 98, 42, 0.1);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 10px;
        }
        .related-card-title {
            font-size: 1.0625rem;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.2s;
        }
        .related-card:hover .related-card-title {
            color: var(--primary);
        }
        .related-card-meta {
            font-size: 0.8125rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* CTA Section */
        .cta-section {
            padding: var(--section-space) 0;
        }
        .cta-box {
            background: var(--primary);
            border-radius: var(--radius);
            padding: clamp(40px, 6vw, 64px) clamp(24px, 5vw, 56px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .cta-box::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: repeating-linear-gradient(90deg, rgba(255,255,255,0.5) 0 12px, transparent 12px 22px);
            opacity: 0.4;
        }
        .cta-left {
            flex: 1;
            min-width: 260px;
        }
        .cta-left h2 {
            color: #fff;
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            margin-bottom: 10px;
        }
        .cta-left p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.9375rem;
            max-width: 420px;
        }
        .cta-right {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-btn-primary {
            background: var(--accent);
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
        }
        .cta-btn-primary:hover {
            background: #D3541F;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }
        .cta-btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            font-size: 1rem;
            font-weight: 500;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            transition: all 0.2s;
        }
        .cta-btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

        /* Footer */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.9fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand {
            max-width: 300px;
        }
        .footer-brand .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand .nav-logo-text {
            color: #fff;
            font-weight: 700;
        }
        .footer-brand p {
            font-size: 0.875rem;
            line-height: 1.7;
            color: #A9C0CA;
            margin-bottom: 20px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: var(--footer-text);
            font-size: 0.9375rem;
            transition: background 0.2s, color 0.2s;
        }
        .footer-social a:hover {
            background: var(--card-bg);
            color: var(--primary);
        }
        .footer-col h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: #A9C0CA;
            font-size: 0.875rem;
            transition: color 0.2s, padding-left 0.2s;
        }
        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact p {
            font-size: 0.875rem;
            color: #A9C0CA;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact p i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            font-size: 0.8125rem;
            color: #7A98A5;
            flex-wrap: wrap;
        }

        /* Article Not Found */
        .article-not-found {
            max-width: 500px;
            margin: 120px auto;
            text-align: center;
            padding: 60px 30px;
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .article-not-found h1 {
            font-size: 2rem;
            color: var(--text);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 28px;
        }
        .back-home-btn {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            transition: background 0.2s, transform 0.2s;
        }
        .back-home-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .article-main {
                padding-top: 60px;
            }
            .article-hero {
                padding: 32px 0 28px;
            }
            .article-tags,
            .post-nav {
                padding-left: 12px;
                padding-right: 12px;
            }
            .post-nav {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .post-nav-card.next {
                text-align: left;
                align-items: flex-start;
            }
            .post-nav-card.next .post-nav-label {
                justify-content: flex-start;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-box {
                flex-direction: column;
                align-items: flex-start;
                gap: 24px;
            }
            .cta-right {
                width: 100%;
            }
            .cta-btn-primary,
            .cta-btn-ghost {
                flex: 1;
                text-align: center;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .article-body {
                padding: 24px 20px;
                border-left: none;
                border-right: none;
                border-radius: 0;
            }
            .article-hero-image {
                aspect-ratio: 4 / 3;
                margin-top: 20px;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.8125rem;
            }
        }

        /* Focus states */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(232, 98, 42, 0.5);
            outline-offset: 2px;
        }
        input:focus-visible {
            outline: none;
        }

/* roulang page: category1 */
:root {
            --primary: #1E7F8E;
            --primary-dark: #165C68;
            --primary-soft: #EAF3F5;
            --accent: #E8622A;
            --bg: #F5F8FA;
            --card-bg: #FFFFFF;
            --text-main: #16282F;
            --text-sub: #4C6270;
            --text-weak: #7A8F9C;
            --border: #E3EBEF;
            --footer-bg: #12343E;
            --footer-text: #C9D8DE;
            --success: #3C8C5A;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-cut: 4px;
            --shadow: 0 2px 8px rgba(18, 52, 62, 0.06);
            --shadow-hover: 0 10px 28px rgba(18, 52, 62, 0.12);
            --container: 1200px;
            --space: clamp(4rem, 8vw, 7rem);
            --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
            padding-top: 74px;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: var(--space) 0;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .8125rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: .06em;
            margin-bottom: 12px;
            background: rgba(30, 127, 142, .08);
            padding: 4px 12px;
            border-radius: 999px;
        }

        .section-head {
            max-width: 680px;
            margin-bottom: 44px;
        }

        .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            position: relative;
            padding-left: 28px;
        }

        .section-head h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: .58em;
            width: 24px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-head p {
            margin-top: 14px;
            color: var(--text-sub);
            font-size: .9375rem;
            line-height: 1.7;
        }

        /* ===== 按钮 ===== */
        .btn-primary,
        .btn-outline-light,
        .btn-cta,
        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.2;
            cursor: pointer;
            transition: all .2s ease;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(22, 92, 104, .18);
        }

        .btn-outline-light {
            background: rgba(255, 255, 255, .12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .7);
            -webkit-backdrop-filter: blur(4px);
            backdrop-filter: blur(4px);
        }

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

        .btn-cta {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
            padding: 14px 32px;
            font-size: 1.0625rem;
        }

        .btn-cta:hover {
            background: #D55220;
            border-color: #D55220;
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(232, 98, 42, .28);
        }

        .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .75);
            padding: 14px 28px;
            font-size: 1rem;
        }

        .btn-cta-outline:hover {
            background: rgba(255, 255, 255, .14);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 20px;
            font-size: .9375rem;
            transition: gap .2s ease, color .2s ease;
        }

        .text-link i {
            transition: transform .2s ease;
        }

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

        .text-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, .95);
            border-bottom: 1px solid transparent;
            transition: border-color .3s ease, box-shadow .3s ease;
        }

        .site-header.scrolled {
            border-bottom-color: var(--border);
            box-shadow: 0 2px 12px rgba(18, 52, 62, .06);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 32px;
            height: 74px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, #1E7F8E 0%, #2A9BB0 100%);
            color: #fff;
            font-weight: 800;
            font-size: .875rem;
            letter-spacing: .02em;
        }

        .nav-logo-text {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
        }

        .nav-center {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-left: 12px;
        }

        .nav-link {
            position: relative;
            font-size: .9375rem;
            font-weight: 500;
            color: var(--text-sub);
            padding: 8px 2px;
            white-space: nowrap;
            transition: color .2s ease;
        }

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

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

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-left: auto;
        }

        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 200px;
            height: 40px;
            padding: 0 14px;
            border: 1px solid #D5E2E8;
            border-radius: var(--radius-sm);
            background: #F8FAFB;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 127, 142, .15);
            background: #fff;
        }

        .nav-search i {
            color: var(--text-weak);
            font-size: .875rem;
        }

        .nav-search input {
            width: 100%;
            border: none;
            background: transparent;
            font-size: .875rem;
            color: var(--text-main);
        }

        .nav-search input::placeholder {
            color: var(--text-weak);
        }

        .nav-login {
            font-size: .9375rem;
            font-weight: 500;
            color: var(--text-sub);
            white-space: nowrap;
            padding: 6px 4px;
        }

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

        .btn-primary-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 22px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: .9375rem;
            font-weight: 600;
            white-space: nowrap;
            transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
        }

        .btn-primary-nav:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(22, 92, 104, .16);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background .2s ease;
        }

        .nav-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: transform .3s ease, opacity .3s ease;
        }

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

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

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

        /* ===== 页面横幅 ===== */
        .page-banner {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: clamp(72px, 10vw, 120px) 0 clamp(56px, 8vw, 88px);
            overflow: hidden;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(18, 52, 62, .82) 0%, rgba(18, 52, 62, .55) 55%, rgba(18, 52, 62, .25) 100%);
        }

        .banner-inner {
            position: relative;
            z-index: 2;
            color: #fff;
            max-width: 720px;
        }

        .banner-tag {
            display: inline-flex;
            align-items: center;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .25);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: .8125rem;
            font-weight: 600;
            letter-spacing: .08em;
            margin-bottom: 20px;
            -webkit-backdrop-filter: blur(4px);
            backdrop-filter: blur(4px);
        }

        .banner-inner h1 {
            font-size: clamp(2.5rem, 5vw, 3.75rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -.01em;
            margin-bottom: 18px;
        }

        .banner-sub {
            font-size: 1.0625rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, .9);
            max-width: 560px;
            margin-bottom: 32px;
        }

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

        .banner-dash {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 1px;
            background: rgba(255, 255, 255, .35);
            border-bottom: 1px dashed rgba(255, 255, 255, .45);
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: .875rem;
            color: var(--text-weak);
        }

        .breadcrumb a {
            color: var(--text-sub);
            font-weight: 500;
        }

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

        .breadcrumb span {
            color: var(--primary);
            font-weight: 600;
        }

        .breadcrumb i {
            font-size: .75rem;
            color: var(--text-weak);
        }

        /* ===== 图文交错 ===== */
        .split-feature {
            background: var(--bg);
        }

        .split-row {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: clamp(36px, 6vw, 72px);
            align-items: center;
            margin-bottom: clamp(48px, 8vw, 80px);
        }

        .split-row:last-child {
            margin-bottom: 0;
        }

        .split-row.reverse .split-media {
            order: 2;
        }

        .split-row.reverse .split-content {
            order: 1;
        }

        .split-media {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }

        .split-media::after {
            content: "";
            display: block;
            padding-bottom: 75%;
        }

        .split-media img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .split-media:hover img {
            transform: scale(1.03);
        }

        .split-media .corner-line {
            position: absolute;
            left: 12px;
            bottom: 12px;
            width: 48px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            z-index: 2;
        }

        .split-content h2 {
            font-size: clamp(1.4rem, 3vw, 2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            position: relative;
            padding-left: 28px;
        }

        .split-content h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: .56em;
            width: 20px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
        }

        .split-content p {
            color: var(--text-sub);
            font-size: .9375rem;
            line-height: 1.8;
            margin-bottom: 14px;
        }

        /* ===== 内容卡 ===== */
        .cat-cards {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .cards-grid .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform .25s ease, box-shadow .25s ease;
            display: flex;
            flex-direction: column;
        }

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

        .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: #E8EEF1;
        }

        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .45s ease;
        }

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

        .card-badge {
            position: absolute;
            left: 12px;
            top: 12px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            color: var(--accent);
            font-size: .75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 6px;
            letter-spacing: .03em;
        }

        .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-title {
            font-size: 1.125rem;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .card-excerpt {
            font-size: .875rem;
            color: var(--text-sub);
            line-height: 1.7;
            flex: 1;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 16px;
            font-size: .8125rem;
            color: var(--text-weak);
            font-variant-numeric: tabular-nums;
        }

        .card-meta i {
            font-size: .75rem;
        }

        .card-link {
            margin-top: 12px;
            font-size: .875rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .card-link i {
            transition: transform .2s ease;
        }

        .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 特色条 ===== */
        .feature-strip {
            background: var(--bg);
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            transition: transform .25s ease, box-shadow .25s ease;
        }

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

        .feature-item i {
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 14px;
            display: inline-block;
            width: 48px;
            height: 48px;
            line-height: 48px;
            text-align: center;
            background: rgba(30, 127, 142, .1);
            border-radius: 10px;
        }

        .feature-item h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .feature-item p {
            font-size: .875rem;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
            border-top: 1px solid var(--border);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            padding: 0 20px;
            overflow: hidden;
            transition: box-shadow .25s ease;
        }

        .faq-item.open {
            box-shadow: var(--shadow);
            border-color: rgba(30, 127, 142, .35);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 0;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            color: var(--text-main);
            user-select: none;
        }

        .faq-icon {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border);
            color: var(--primary);
            font-size: 1rem;
            font-weight: 400;
            transition: transform .3s ease, background .3s ease, color .3s ease;
        }

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

        .faq-a {
            max-height: 0;
            padding: 0;
            font-size: .875rem;
            color: var(--text-sub);
            line-height: 1.7;
            transition: max-height .35s ease, padding .35s ease;
        }

        .faq-item.open .faq-a {
            max-height: 260px;
            padding-bottom: 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--space) 0;
        }

        .cta-box {
            background: var(--primary);
            border-radius: var(--radius);
            padding: clamp(40px, 6vw, 60px) clamp(28px, 5vw, 64px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 18px 48px rgba(18, 52, 62, .22);
        }

        .cta-box::after {
            content: "";
            position: absolute;
            right: 8%;
            bottom: -90px;
            width: 260px;
            height: 260px;
            border: 40px solid rgba(255, 255, 255, .06);
            border-radius: 50%;
        }

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

        .cta-content h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .cta-content p {
            color: rgba(255, 255, 255, .88);
            font-size: .9375rem;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            position: relative;
            z-index: 2;
            flex-shrink: 0;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px dashed rgba(255, 255, 255, .14);
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .logo-area .nav-logo-icon {
            width: 38px;
            height: 38px;
            font-size: .9375rem;
            background: linear-gradient(135deg, #1E7F8E, #2A9BB0);
        }

        .logo-area .nav-logo-text {
            color: #fff;
            font-size: 1.125rem;
        }

        .footer-brand p {
            font-size: .875rem;
            line-height: 1.8;
            color: var(--footer-text);
            max-width: 300px;
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .1);
            color: var(--footer-text);
            font-size: .875rem;
            transition: background .25s ease, color .25s ease, transform .25s ease;
        }

        .footer-social a:hover {
            background: #fff;
            color: var(--primary);
            transform: translateY(-3px);
        }

        .footer-col h4,
        .footer-contact h4 {
            color: #fff;
            font-size: .9375rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul a {
            color: var(--footer-text);
            font-size: .875rem;
            transition: color .2s ease, padding-left .2s ease;
        }

        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-contact p {
            font-size: .875rem;
            line-height: 1.9;
            color: var(--footer-text);
        }

        .footer-contact i {
            width: 18px;
            margin-right: 4px;
            color: rgba(255, 255, 255, .5);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 22px;
            font-size: .8125rem;
            color: #7A98A5;
            flex-wrap: wrap;
        }

        .footer-bottom span {
            font-variant-numeric: tabular-nums;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-center {
                gap: 20px;
            }

            .nav-search {
                width: 160px;
            }

            .nav-wrap {
                gap: 20px;
            }

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

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

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

        @media (max-width: 768px) {
            body {
                padding-top: 64px;
            }

            .nav-wrap {
                height: 64px;
                flex-wrap: wrap;
            }

            .nav-toggle {
                display: flex;
                margin-left: auto;
            }

            .nav-center,
            .nav-right {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
            }

            .nav-wrap.menu-open .nav-center,
            .nav-wrap.menu-open .nav-right {
                display: flex;
                position: absolute;
                top: 64px;
                left: 0;
                width: 100%;
                background: #fff;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 28px rgba(18, 52, 62, .08);
                gap: 4px;
            }

            .nav-center {
                order: 2;
            }

            .nav-right {
                order: 3;
            }

            .nav-wrap.menu-open .nav-center {
                display: flex;
            }

            .nav-wrap.menu-open .nav-right {
                display: flex;
            }

            .nav-link {
                padding: 12px 0;
                font-size: 1rem;
                border-bottom: 1px solid #F0F4F6;
            }

            .nav-link.active::after {
                display: none;
            }

            .nav-right {
                margin-left: 0;
            }

            .nav-search {
                width: 100%;
                margin-top: 12px;
            }

            .nav-login {
                padding: 10px 0;
                text-align: center;
            }

            .btn-primary-nav {
                width: 100%;
            }

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

            .split-row.reverse .split-media {
                order: 0;
            }

            .split-row.reverse .split-content {
                order: 0;
            }

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

            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .feature-item {
                padding: 20px 16px;
            }

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

            .cta-box {
                flex-direction: column;
                text-align: left;
            }

            .cta-actions {
                width: 100%;
            }

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

            .banner-inner h1 {
                font-size: clamp(2rem, 9vw, 2.75rem);
            }

            .page-banner {
                padding: 56px 0 64px;
            }

            .breadcrumb {
                font-size: .8125rem;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

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

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

            .cards-grid {
                gap: 16px;
            }

            .banner-sub {
                font-size: .9375rem;
            }

            .btn-primary,
            .btn-outline-light {
                width: 100%;
            }

            .banner-actions {
                flex-direction: column;
            }
        }

        :focus-visible {
            outline: 3px solid rgba(30, 127, 142, .35);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: category2 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #1E7F8E;
            --primary-dark: #165C68;
            --primary-light: #EAF3F5;
            --accent: #E8622A;
            --accent-light: rgba(232, 98, 42, 0.1);
            --bg: #F5F8FA;
            --card-bg: #FFFFFF;
            --text-main: #16282F;
            --text-secondary: #4C6270;
            --text-muted: #7A8F9C;
            --border: #E3EBEF;
            --footer-bg: #12343E;
            --footer-text: #C9D8DE;
            --success: #3C8C5A;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-sm: 0 2px 8px rgba(18, 52, 62, 0.06);
            --shadow-lg: 0 10px 28px rgba(18, 52, 62, 0.12);
            --transition: 0.2s ease;
            --container: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            background: var(--bg);
            color: var(--text-main);
            font-size: 1rem;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input {
            font-family: inherit;
            border: none;
            outline: none;
        }

        ul {
            list-style: none;
        }

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

        /* ============ 导航 ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(6px);
            border-bottom: 1px solid transparent;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            border-bottom-color: var(--border);
            box-shadow: 0 1px 12px rgba(18, 52, 62, 0.06);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            font-weight: 800;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            letter-spacing: -0.02em;
        }

        .nav-logo-text {
            font-size: 1.1rem;
            font-weight: 700;
            letter-spacing: 0.01em;
            color: var(--text-main);
        }

        .nav-center {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            padding: 8px 14px;
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            position: relative;
            transition: color var(--transition), background var(--transition);
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(30, 127, 142, 0.06);
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            padding: 0 12px;
            height: 36px;
            width: 200px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .nav-search i {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-right: 8px;
        }

        .nav-search input {
            background: transparent;
            border: none;
            font-size: 0.875rem;
            width: 100%;
            color: var(--text-main);
        }

        .nav-search input::placeholder {
            color: var(--text-muted);
        }

        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 127, 142, 0.15);
        }

        .nav-login {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 4px;
            border-radius: 6px;
        }

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

        .btn-primary-nav {
            background: var(--primary);
            color: #fff;
            font-size: 0.9375rem;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-btn);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }

        .btn-primary-nav:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(30, 127, 142, 0.25);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 36px;
            height: 36px;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            transition: background var(--transition);
        }

        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }

        .nav-toggle:hover {
            background: var(--bg);
        }

        /* ============ 通用板块 ============ */
        .section-pad {
            padding: clamp(4rem, 8vw, 6.5rem) 0;
        }

        .section-alt {
            background: var(--bg);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

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

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

        .section-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 12px;
            position: relative;
            padding-left: 24px;
        }

        .section-head h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.55em;
            width: 24px;
            height: 4px;
            border-radius: 2px;
            background: var(--accent);
        }

        .section-head.center h2::before {
            display: none;
        }

        .section-head p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.7;
            margin-top: 8px;
        }

        /* ============ 页面横幅 ============ */
        .page-banner {
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 160px 0 70px;
            color: #fff;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(18, 52, 62, 0.86) 0%, rgba(18, 52, 62, 0.55) 55%, rgba(18, 52, 62, 0.25) 100%);
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb i {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .page-banner h1 {
            font-size: clamp(2.2rem, 4.5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .page-banner .banner-sub {
            font-size: clamp(1rem, 1.5vw, 1.15rem);
            color: rgba(255, 255, 255, 0.9);
            max-width: 560px;
            line-height: 1.7;
            margin-bottom: 28px;
        }

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

        .btn-primary {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            border: 2px solid transparent;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(30, 127, 142, 0.3);
        }

        .btn-secondary {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            padding: 12px 26px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.55);
            backdrop-filter: blur(4px);
            transition: background var(--transition), transform var(--transition);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.22);
            transform: translateY(-2px);
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background-image: linear-gradient(to right, transparent 0%, #fff 30%, #fff 70%, transparent 100%);
            background-size: 16px 1px;
            background-repeat: repeat-x;
            z-index: 2;
        }

        /* ============ 图文交错 ============ */
        .media-row {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: clamp(32px, 5vw, 64px);
            align-items: center;
            margin-bottom: clamp(3rem, 6vw, 5rem);
        }

        .media-row:last-child {
            margin-bottom: 0;
        }

        .media-row.reverse {
            grid-template-columns: 7fr 5fr;
        }

        .media-row.reverse .media-img {
            order: 1;
        }

        .media-row.reverse .media-text {
            order: 2;
            padding-left: 0;
            padding-right: 12px;
        }

        .media-text .section-tag {
            margin-bottom: 14px;
        }

        .media-text h2 {
            font-size: clamp(1.4rem, 2.5vw, 2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .media-text p {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .media-text .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9375rem;
            margin-top: 8px;
            transition: gap var(--transition);
        }

        .media-text .text-link:hover {
            gap: 10px;
            text-decoration: underline;
        }

        .media-img {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            aspect-ratio: 16 / 10;
            position: relative;
        }

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

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

        /* ============ 特色功能卡片 ============ */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .feature-icon {
            width: 46px;
            height: 46px;
            border-radius: 10px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            color: var(--primary);
            margin-bottom: 18px;
        }

        .feature-card h3 {
            font-size: 1.125rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .feature-card p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ============ 精选内容卡 ============ */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .content-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #f0f3f5;
        }

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

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

        .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 4px;
            backdrop-filter: blur(4px);
        }

        .card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .card-body h3 a {
            transition: color var(--transition);
        }

        .card-body h3 a:hover {
            color: var(--primary);
        }

        .card-body p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 16px;
            border-top: 1px solid var(--border);
            margin-top: auto;
        }

        .card-meta .time {
            font-size: 0.8125rem;
            color: var(--text-muted);
            font-variant-numeric: tabular-nums;
        }

        .card-meta .arrow {
            color: var(--primary);
            font-size: 0.875rem;
            transition: transform var(--transition);
        }

        .content-card:hover .card-meta .arrow {
            transform: translateX(4px);
        }

        /* ============ 流程 ============ */
        .section-dark {
            background: var(--footer-bg);
            color: #fff;
            position: relative;
        }

        .section-dark .section-head h2 {
            color: #fff;
        }

        .section-dark .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-dark .section-tag {
            background: rgba(232, 98, 42, 0.18);
            color: #f0a080;
        }

        .section-dark::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background-image: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.4) 40%, rgba(255, 255, 255, 0.4) 60%, transparent);
            background-size: 18px 1px;
            background-repeat: repeat-x;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .process-step {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 32px 26px;
            transition: background var(--transition), transform var(--transition);
        }

        .process-step:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }

        .step-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent);
            opacity: 0.85;
            line-height: 1;
            margin-bottom: 18px;
            font-variant-numeric: tabular-nums;
        }

        .process-step h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: #fff;
        }

        .process-step p {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 880px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

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

        .faq-item.open {
            box-shadow: var(--shadow-lg);
            border-color: rgba(30, 127, 142, 0.25);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            background: transparent;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }

        .faq-question:hover {
            background: #f9fbfc;
        }

        .faq-icon {
            font-size: 1.2rem;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 16px;
            font-family: sans-serif;
            font-weight: 300;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding var(--transition);
            padding: 0 22px;
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.7;
            border-top: 0 solid var(--border);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 4px 22px 18px;
            border-top-width: 1px;
        }

        /* ============ CTA ============ */
        .cta-section {
            padding: clamp(3rem, 6vw, 5rem) 0;
        }

        .cta-box {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: clamp(40px, 6vw, 64px) clamp(32px, 6vw, 60px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
            box-shadow: 0 12px 40px rgba(30, 127, 142, 0.25);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -50px;
            right: 80px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
        }

        .cta-content {
            flex: 1;
            min-width: 280px;
            position: relative;
            z-index: 1;
        }

        .cta-content h2 {
            font-size: clamp(1.5rem, 2.5vw, 2.1rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1rem;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .btn-cta {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 1.0625rem;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            border: 2px solid transparent;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }

        .btn-cta:hover {
            background: #d05520;
            transform: translateY(-2px);
            box-shadow: 0 7px 20px rgba(232, 98, 42, 0.35);
        }

        .btn-cta-outline {
            display: inline-block;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 1.0625rem;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.6);
            transition: background var(--transition), transform var(--transition);
        }

        .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 56px 0 24px;
        }

        .site-footer::before {
            content: '';
            display: block;
            height: 1px;
            background-image: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.2) 40%, rgba(255, 255, 255, 0.2) 60%, transparent);
            background-size: 18px 1px;
            background-repeat: repeat-x;
            margin-bottom: 48px;
            border: none;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 44px;
        }

        .footer-brand .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .nav-logo-icon {
            background: var(--primary);
        }

        .footer-brand .nav-logo-text {
            color: #fff;
            font-size: 1.15rem;
            font-weight: 700;
        }

        .footer-brand p {
            font-size: 0.875rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--footer-text);
            font-size: 0.9375rem;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }

        .footer-social a:hover {
            background: #fff;
            color: var(--primary);
            transform: translateY(-2px);
        }

        .footer-col h4,
        .footer-contact h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition), padding-left var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-contact p {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 10px;
            display: flex;
            align-items: baseline;
            gap: 10px;
        }

        .footer-contact p i {
            color: var(--primary);
            width: 16px;
            font-size: 0.85rem;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 0.8125rem;
            color: #7A98A5;
        }

        /* ============ 移动端菜单 ============ */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 10px 30px rgba(18, 52, 62, 0.1);
            padding: 20px 24px 26px;
            z-index: 999;
            flex-direction: column;
            gap: 6px;
        }

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

        .mobile-menu .nav-link {
            padding: 14px 12px;
            font-size: 1rem;
            border-bottom: 1px solid #f0f3f5;
        }

        .mobile-menu .nav-link:last-child {
            border-bottom: none;
        }

        .mobile-menu .nav-link.active {
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 8px;
        }

        .mobile-menu .nav-link.active::after {
            display: none;
        }

        .mobile-menu-footer {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 12px 0;
            border-top: 1px solid var(--border);
            margin-top: 10px;
        }

        .mobile-menu-footer .nav-search {
            flex: 1;
            width: auto;
        }

        .mobile-menu-footer .nav-login {
            white-space: nowrap;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .nav-center {
                gap: 0;
            }

            .nav-link {
                padding: 8px 10px;
                font-size: 0.875rem;
            }

            .nav-search {
                width: 150px;
            }

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

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

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

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }

            .nav-center,
            .nav-right {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-wrap {
                height: 60px;
            }

            .page-banner {
                padding: 130px 0 56px;
            }

            .page-banner h1 {
                font-size: clamp(1.9rem, 6vw, 2.6rem);
            }

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

            .btn-primary,
            .btn-secondary {
                width: 100%;
                text-align: center;
            }

            .media-row,
            .media-row.reverse {
                grid-template-columns: 1fr;
            }

            .media-row.reverse .media-img {
                order: 0;
            }

            .media-row.reverse .media-text {
                order: 1;
                padding-right: 0;
            }

            .media-img {
                aspect-ratio: 16 / 12;
            }

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

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

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

            .section-head h2 {
                padding-left: 20px;
            }

            .cta-box {
                flex-direction: column;
                align-items: flex-start;
                gap: 24px;
            }

            .cta-actions {
                width: 100%;
            }

            .btn-cta,
            .btn-cta-outline {
                flex: 1;
                text-align: center;
            }

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

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

        @media (max-width: 520px) {
            .nav-logo-text {
                font-size: 1rem;
            }

            .page-banner {
                padding: 120px 0 48px;
            }

            .page-banner .banner-sub {
                font-size: 0.9375rem;
            }

            .section-pad {
                padding: 3.2rem 0;
            }

            .faq-question {
                font-size: 0.9375rem;
                padding: 16px 16px;
            }

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

            .faq-item.open .faq-answer {
                padding: 4px 16px 16px;
            }

            .btn-cta,
            .btn-cta-outline {
                padding: 13px 18px;
                font-size: 0.9375rem;
            }
        }