/* roulang page: index */
:root {
            --primary: #0d9488;
            --primary-dark: #0f766e;
            --primary-light: #ccfbf1;
            --primary-bg: #f0fdfa;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --accent-light: #fef3c7;
            --bg: #f8fafc;
            --surface: #ffffff;
            --surface-alt: #f1f5f9;
            --text-primary: #0f172a;
            --text-secondary: #334155;
            --text-muted: #64748b;
            --text-faint: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
            --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
            --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
            --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --max-width: 1120px;
            --header-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-primary);
            background-color: var(--bg);
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: all var(--transition);
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ============ Header / Navigation ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
            height: var(--header-height);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .nav-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(13, 148, 136, 0.25);
        }

        .nav-logo span.logo-text {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo .logo-text .highlight {
            color: var(--primary-dark);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links a {
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary-dark);
            background: var(--primary-bg);
        }

        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 2px 8px rgba(13, 148, 136, 0.25);
        }

        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 36px;
            height: 36px;
            padding: 7px;
            border-radius: var(--radius-sm);
            background: var(--surface);
            border: 1px solid var(--border);
        }

        .nav-mobile-toggle span {
            display: block;
            height: 2px;
            background: var(--text-secondary);
            border-radius: 2px;
            transition: all var(--transition);
        }

        /* ============ Hero ============ */
        .hero {
            position: relative;
            padding: 72px 0 56px;
            background: linear-gradient(180deg, #f0fdfa 0%, #f8fafc 100%);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -200px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(13, 148, 136, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -150px;
            left: -150px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-full);
            font-size: 14px;
            font-weight: 500;
            color: var(--primary-dark);
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
        }

        .hero-badge .dot {
            width: 6px;
            height: 6px;
            background: var(--primary);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            color: var(--text-primary);
            max-width: 800px;
            margin-bottom: 20px;
        }

        .hero h1 .highlight {
            color: var(--primary-dark);
            position: relative;
        }

        .hero h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            right: 0;
            height: 8px;
            background: var(--accent-light);
            border-radius: 4px;
            z-index: -1;
            opacity: 0.7;
        }

        .hero-subtitle {
            font-size: 18px;
            line-height: 1.7;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
            margin-bottom: 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(13, 148, 136, 0.4);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(13, 148, 136, 0.25);
        }

        .btn-secondary {
            background: var(--surface);
            color: var(--text-primary);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
            background: var(--primary-bg);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .hero-trust {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
            justify-content: center;
        }

        .hero-trust .trust-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust .trust-item .icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 50%;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
        }

        /* Hero data strip */
        .hero-data-strip {
            width: 100%;
            margin-top: 48px;
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 20px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .hero-data-item {
            text-align: center;
            padding: 8px 4px;
            position: relative;
        }

        .hero-data-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: -10px;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 40px;
            background: var(--border-light);
        }

        .hero-data-item .data-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1.2;
        }

        .hero-data-item .data-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ============ Sections ============ */
        .section {
            padding: 64px 0;
        }

        .section-header {
            max-width: 680px;
            margin: 0 auto 40px;
            text-align: center;
        }

        .section-header .section-tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-full);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ============ Features Section ============ */
        .features-section {
            background: var(--surface);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

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

        .feature-card {
            background: var(--bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: all var(--transition-slow);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
            opacity: 0;
            transition: opacity var(--transition-slow);
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--border);
        }

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

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            font-size: 22px;
            margin-bottom: 16px;
            background: var(--surface);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }

        .feature-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.2px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* ============ Comparison Section ============ */
        .comparison-section {
            background: var(--bg);
        }

        .comparison-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            align-items: stretch;
        }

        .comparison-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-slow);
        }

        .comparison-card:hover {
            box-shadow: var(--shadow-md);
        }

        .comparison-card.dim {
            background: var(--surface-alt);
            border-color: var(--border-light);
        }

        .comparison-card.highlight-card {
            border-color: var(--primary);
            box-shadow: 0 4px 20px rgba(13, 148, 136, 0.12);
            position: relative;
        }

        .comparison-card .card-label {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 16px;
        }

        .comparison-card .card-label.dim-label {
            background: #e2e8f0;
            color: #475569;
        }

        .comparison-card .card-label.highlight-label {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .comparison-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.2px;
        }

        .comparison-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .comparison-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.55;
        }

        .comparison-list li .list-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            margin-top: 2px;
        }

        .comparison-list li .list-icon.good {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .comparison-list li .list-icon.bad {
            background: #fef2f2;
            color: #dc2626;
        }

        /* ============ Process Section ============ */
        .process-section {
            background: var(--surface);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

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

        .process-step {
            text-align: center;
            padding: 32px 24px;
            background: var(--bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            position: relative;
        }

        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .process-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            border-radius: 50%;
            margin-bottom: 16px;
            box-shadow: 0 4px 12px rgba(13, 148, 136, 0.25);
        }

        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* ============ News / Content List ============ */
        .news-section {
            background: var(--bg);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            transition: all var(--transition);
        }

        .news-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }

        .news-item .news-tag {
            flex-shrink: 0;
            padding: 4px 12px;
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-full);
            white-space: nowrap;
        }

        .news-item .news-title-link {
            flex: 1;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-primary);
            transition: color var(--transition);
        }

        .news-item .news-title-link:hover {
            color: var(--primary-dark);
        }

        .news-item .news-arrow {
            flex-shrink: 0;
            color: var(--text-faint);
            font-size: 18px;
            transition: all var(--transition);
        }

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

        /* ============ Testimonials ============ */
        .testimonials-section {
            background: var(--surface);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

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

        .testimonial-card {
            background: var(--bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition-slow);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .testimonial-card .quote {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            font-style: italic;
        }

        .testimonial-card .author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-card .author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .testimonial-card .author-info .author-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .testimonial-card .author-info .author-role {
            font-size: 12px;
            color: var(--text-faint);
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: var(--bg);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(13, 148, 136, 0.1);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            background: none;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--surface-alt);
            color: var(--text-secondary);
            font-size: 16px;
            font-weight: 700;
            transition: all var(--transition);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }

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

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ============ CTA Section ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #0f766e 50%, #115e59 100%);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -120px;
            left: -80px;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.3px;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 36px;
            background: #fff;
            color: var(--primary-dark);
            font-size: 16px;
            font-weight: 700;
            border-radius: var(--radius-full);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            transition: all var(--transition);
        }

        .btn-cta:hover {
            background: var(--accent-light);
            color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
        }

        .btn-cta:active {
            transform: translateY(0);
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 48px 0 32px;
            margin-top: auto;
        }

        .site-footer .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 20px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }

        .footer-brand .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 14px;
            font-weight: 800;
        }

        .footer-description {
            font-size: 14px;
            color: #94a3b8;
            max-width: 480px;
            line-height: 1.7;
        }

        .footer-divider {
            width: 100%;
            max-width: 600px;
            height: 1px;
            background: rgba(255, 255, 255, 0.1);
        }

        .footer-bottom {
            font-size: 13px;
            color: #64748b;
            line-height: 1.7;
        }

        .footer-bottom a {
            color: #94a3b8;
            transition: color var(--transition);
        }

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

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

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

            .hero-data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
                padding: 16px 20px;
            }

            .hero-data-item:not(:last-child)::after {
                display: none;
            }

            .hero h1 {
                font-size: 36px;
            }

            .process-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
            }

            .site-header .container,
            .site-header {
                height: var(--header-height);
            }

            .hero {
                padding: 48px 0 40px;
            }

            .hero h1 {
                font-size: 28px;
                line-height: 1.35;
            }

            .hero-subtitle {
                font-size: 16px;
            }

            .section {
                padding: 48px 0;
            }

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

            .features-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

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

            .process-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .news-item {
                flex-wrap: wrap;
                gap: 8px;
                padding: 14px 16px;
            }

            .news-item .news-title-link {
                flex-basis: 100%;
                order: 2;
            }

            .testimonials-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .hero-data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
                padding: 16px;
            }

            .hero-data-item .data-number {
                font-size: 24px;
            }

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

            .cta-section p {
                font-size: 15px;
            }

            .nav-links {
                display: none;
            }

            .nav-mobile-toggle {
                display: flex;
            }

            .nav-links.mobile-open {
                display: flex;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                flex-direction: column;
                background: var(--surface);
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                padding: 12px 16px;
                gap: 4px;
                z-index: 99;
            }

            .nav-links.mobile-open a {
                width: 100%;
                text-align: center;
                padding: 12px;
                border-radius: var(--radius-sm);
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero h1 {
                font-size: 24px;
            }

            .hero-subtitle {
                font-size: 15px;
            }

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

            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .hero-data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
                padding: 12px;
            }

            .hero-data-item .data-number {
                font-size: 22px;
            }

            .hero-data-item .data-label {
                font-size: 12px;
            }

            .section-header h2 {
                font-size: 22px;
            }

            .comparison-card,
            .feature-card,
            .process-step,
            .testimonial-card {
                padding: 20px 16px;
            }

            .btn {
                padding: 11px 20px;
                font-size: 14px;
            }

            .nav-logo {
                font-size: 17px;
            }

            .nav-logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }
        }