/* roulang page: index */
:root {
            --primary: #0F52BA;
            --primary-dark: #083b8a;
            --secondary: #00A86B;
            --secondary-light: #e6f7f0;
            --dark: #0B132B;
            --dark-surface: #1C2541;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --bg-light: #F8FAFC;
            --white: #FFFFFF;
            --border-color: #E2E8F0;
            --shadow-sm: 0 2px 4px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.06), 0 2px 4px -1px rgba(0,0,0,0.04);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.03);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --container-w: 1240px;
        }

        /* Reset & Base */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-body);
            background-color: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul, ol {
            list-style: none;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-w);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* Top Bar & Header */
        .top-bar {
            background-color: #070e20;
            color: #94a3b8;
            font-size: 0.85rem;
            padding: 7px 0;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .top-bar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-bar-info span {
            margin-right: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 1.1rem;
            font-weight: bold;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            font-weight: 500;
            color: var(--text-main);
            font-size: 0.98rem;
            position: relative;
            padding: 6px 0;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.25s ease;
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 11px 26px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            text-align: center;
        }
        .btn-primary {
            background-color: var(--primary);
            color: var(--white);
            box-shadow: 0 4px 10px rgba(15, 82, 186, 0.25);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 14px rgba(15, 82, 186, 0.35);
        }
        .btn-secondary {
            background-color: var(--secondary);
            color: var(--white);
        }
        .btn-secondary:hover {
            background-color: #008f5a;
            transform: translateY(-2px);
        }
        .btn-outline {
            border-color: var(--border-color);
            background: var(--white);
            color: var(--text-main);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: #f1f5f9;
        }
        .btn-lg {
            padding: 14px 34px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }

        /* Section Layouts */
        .section-block {
            padding: 85px 0;
            position: relative;
        }
        .section-header {
            max-width: 760px;
            margin: 0 auto 50px auto;
            text-align: center;
        }
        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(15, 82, 186, 0.08);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: 50px;
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 1. Hero Section (斜切色块首屏) */
        .hero-section {
            position: relative;
            background: #0d1b2a url('/assets/images/2f6126f13ca6cc8d.png') center/cover no-repeat;
            color: var(--white);
            padding: 120px 0 140px 0;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(11, 19, 43, 0.95) 0%, rgba(15, 82, 186, 0.82) 65%, rgba(0, 168, 107, 0.55) 100%);
        }
        .hero-slant {
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            height: 60px;
            background: var(--bg-light);
            clip-path: polygon(0 100%, 100% 100%, 100% 0);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .hero-title {
            font-size: 3.1rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }
        .hero-title span {
            color: #4ade80;
        }
        .hero-lead {
            font-size: 1.15rem;
            line-height: 1.8;
            color: #e2e8f0;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            margin-bottom: 42px;
        }
        .hero-metrics {
            display: flex;
            gap: 36px;
            border-top: 1px solid rgba(255,255,255,0.15);
            padding-top: 24px;
        }
        .hero-metric-item h4 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--white);
        }
        .hero-metric-item p {
            font-size: 0.85rem;
            color: #cbd5e1;
        }

        /* 2. 行业痛点区 (Pain Points) */
        .pain-section {
            background-color: var(--bg-light);
        }
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .pain-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border-top: 4px solid #ef4444;
            transition: transform 0.25s ease;
        }
        .pain-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .pain-tag {
            font-size: 0.8rem;
            font-weight: 700;
            color: #dc2626;
            margin-bottom: 10px;
            display: inline-block;
        }
        .pain-card h3 {
            font-size: 1.2rem;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .pain-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 3. 解决方案体系 (About / Architecture) */
        .solution-section {
            background: var(--white);
        }
        .solution-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .solution-image-wrapper {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .solution-checklist {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .checklist-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }
        .check-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--secondary-light);
            color: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
            margin-top: 3px;
        }

        /* 4. 核心功能六宫格 (Advantages) */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .adv-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 34px 28px;
            transition: all 0.3s ease;
            position: relative;
        }
        .adv-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
        }
        .adv-icon-box {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: #eff6ff;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 20px;
            font-weight: 800;
        }
        .adv-card h3 {
            font-size: 1.25rem;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .adv-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 5. 深色沉浸式架构流程 (Architecture Flow) */
        .arch-section {
            background-color: var(--dark);
            color: var(--white);
        }
        .arch-section .section-title {
            color: var(--white);
        }
        .arch-section .section-desc {
            color: #94a3b8;
        }
        .arch-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .arch-card {
            background: var(--dark-surface);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-md);
            padding: 30px 24px;
            position: relative;
        }
        .arch-step {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 1.8rem;
            font-weight: 900;
            color: rgba(255,255,255,0.06);
        }
        .arch-card h3 {
            font-size: 1.18rem;
            color: #38bdf8;
            margin-bottom: 12px;
        }
        .arch-card p {
            font-size: 0.9rem;
            color: #94a3b8;
            line-height: 1.6;
        }
        .arch-tags {
            margin-top: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .arch-tags span {
            font-size: 0.75rem;
            background: rgba(255,255,255,0.05);
            padding: 3px 8px;
            border-radius: 4px;
            color: #cbd5e1;
        }

        /* 6. 场景演示 (Scenarios & Cases) */
        .case-section {
            background-color: var(--white);
        }
        .case-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 50px;
            background: var(--bg-light);
            padding: 30px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .case-row:nth-child(even) {
            direction: rtl;
        }
        .case-row:nth-child(even) .case-content {
            direction: ltr;
        }
        .case-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .case-badge {
            display: inline-block;
            padding: 3px 10px;
            background: #dbeafe;
            color: #1e40af;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .case-content h3 {
            font-size: 1.45rem;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .case-content p {
            font-size: 0.96rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .case-highlights {
            display: flex;
            gap: 20px;
        }
        .ch-item strong {
            display: block;
            font-size: 1.25rem;
            color: var(--primary);
        }
        .ch-item span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 7. 量化数据指标条 (Stats) */
        .stats-bar {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--white);
            padding: 55px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-box h2 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1;
            margin-bottom: 8px;
            color: #38bdf8;
        }
        .stat-box p {
            font-size: 0.95rem;
            color: #e2e8f0;
        }

        /* 8. 社会认同与口碑 (Testimonials) */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .review-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: var(--shadow-sm);
        }
        .review-rating {
            color: #f59e0b;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        .review-text {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 20px;
            font-style: italic;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid #f1f5f9;
            padding-top: 16px;
        }
        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #cbd5e1;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #334155;
        }
        .author-meta h4 {
            font-size: 0.95rem;
            color: var(--text-main);
        }
        .author-meta span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 9. 赛事资讯与技术动态 (News) */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .news-img-box {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .news-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-img-box img {
            transform: scale(1.05);
        }
        .news-date {
            position: absolute;
            bottom: 12px;
            left: 12px;
            background: rgba(15, 23, 42, 0.8);
            color: var(--white);
            font-size: 0.75rem;
            padding: 3px 8px;
            border-radius: 4px;
        }
        .news-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-body h3 {
            font-size: 1.15rem;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .news-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .news-link {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 10. 套餐与版本对比 (Pricing / Editions) */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            align-items: stretch;
        }
        .price-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .price-card.featured {
            border: 2px solid var(--primary);
            box-shadow: 0 10px 25px -5px rgba(15, 82, 186, 0.15);
            transform: scale(1.02);
        }
        .featured-tag {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: var(--white);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 50px;
        }
        .price-header {
            margin-bottom: 24px;
            text-align: center;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 20px;
        }
        .price-header h3 {
            font-size: 1.35rem;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .price-header p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }
        .price-features {
            flex: 1;
            margin-bottom: 28px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .price-features li {
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-body);
        }
        .price-features li::before {
            content: '✓';
            color: var(--secondary);
            font-weight: bold;
        }

        /* 11. 保障条 (SLA & Guarantees) */
        .guarantee-bar {
            background-color: #0d1e3a;
            color: var(--white);
            padding: 40px 0;
            border-top: 1px solid rgba(255,255,255,0.08);
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .g-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background: rgba(255,255,255,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #38bdf8;
            flex-shrink: 0;
        }
        .g-text h4 {
            font-size: 1rem;
            color: var(--white);
            margin-bottom: 2px;
        }
        .g-text p {
            font-size: 0.8rem;
            color: #94a3b8;
        }

        /* 12. 转化表单与咨询预约 (Contact & CTA) */
        .contact-section {
            background-color: var(--white);
        }
        .contact-box {
            background: linear-gradient(135deg, #0b132b 0%, #172554 100%);
            border-radius: var(--radius-lg);
            padding: 50px;
            color: var(--white);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .contact-info h3 {
            font-size: 1.9rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .contact-info p {
            font-size: 1rem;
            color: #cbd5e1;
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .contact-badges {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .c-badge-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: #93c5fd;
        }
        .contact-form {
            background: var(--white);
            padding: 34px;
            border-radius: var(--radius-md);
            color: var(--text-main);
            box-shadow: var(--shadow-lg);
        }
        .contact-form h4 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 18px;
            text-align: center;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-body);
        }
        .form-control {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            background: #f8fafc;
            transition: all 0.2s ease;
        }
        .form-control:focus {
            border-color: var(--primary);
            background: var(--white);
            box-shadow: 0 0 0 3px rgba(15, 82, 186, 0.15);
        }
        .form-submit-btn {
            width: 100%;
            padding: 12px;
            background: var(--primary);
            color: var(--white);
            font-weight: 700;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: background 0.25s ease;
            margin-top: 8px;
        }
        .form-submit-btn:hover {
            background: var(--primary-dark);
        }

        /* 13. FAQ 常见问题折叠区 */
        .faq-section {
            background: var(--bg-light);
        }
        .faq-accordion {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-header {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            user-select: none;
            background: var(--white);
            transition: background 0.2s ease;
        }
        .faq-header:hover {
            background: #f8fafc;
        }
        .faq-toggle {
            font-size: 1.2rem;
            color: var(--primary);
            transition: transform 0.3s ease;
        }
        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            padding: 0 24px;
            background: #fdfdfd;
        }
        .faq-body p {
            padding: 16px 0 20px 0;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            border-top: 1px solid #f1f5f9;
        }
        .faq-item.active .faq-body {
            max-height: 500px;
            transition: max-height 0.3s ease-in-out;
        }
        .faq-item.active .faq-toggle {
            transform: rotate(45deg);
        }

        /* Footer */
        .site-footer {
            background: #070f1f;
            color: #94a3b8;
            padding: 60px 0 24px 0;
            border-top: 1px solid rgba(255,255,255,0.06);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h4 {
            font-size: 1.25rem;
            color: var(--white);
            margin-bottom: 14px;
            font-weight: 700;
        }
        .footer-brand p {
            line-height: 1.7;
            color: #64748b;
            margin-bottom: 16px;
        }
        .footer-col h5 {
            font-size: 1rem;
            color: var(--white);
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col a:hover {
            color: var(--white);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            text-align: center;
            font-size: 0.82rem;
            color: #64748b;
        }
        .footer-bottom p {
            margin-bottom: 6px;
        }

        /* 移动端底部悬浮栏 (Mobile Sticky Bar) */
        .mobile-sticky-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: var(--white);
            box-shadow: 0 -4px 10px rgba(0,0,0,0.1);
            padding: 10px 16px;
            z-index: 999;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        /* 移动端抽屉导航交互 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-main);
            cursor: pointer;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-title { font-size: 2.5rem; }
            .pain-grid, .advantage-grid, .reviews-grid, .news-grid, .pricing-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .arch-grid, .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .top-bar { display: none; }
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: var(--white);
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow-lg);
                border-top: 1px solid var(--border-color);
                gap: 16px;
            }
            .main-nav.show { display: flex; }
            .mobile-menu-btn { display: block; }
            .header-actions { display: none; }
            
            .hero-title { font-size: 2rem; }
            .hero-metrics { flex-direction: column; gap: 16px; }
            .hero-actions { flex-direction: column; }

            .pain-grid, .advantage-grid, .reviews-grid, .news-grid, .pricing-grid {
                grid-template-columns: 1fr;
            }
            .solution-split, .contact-box {
                grid-template-columns: 1fr;
                gap: 30px;
                padding: 24px;
            }
            .case-row, .case-row:nth-child(even) {
                grid-template-columns: 1fr;
                direction: ltr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .arch-grid, .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .mobile-sticky-bar {
                display: grid;
            }
            body {
                padding-bottom: 65px;
            }
        }