/* roulang page: index */
:root {
            --primary: #0F3F7A;
            --primary-hover: #1D63B8;
            --primary-light: #EBF3FC;
            --accent: #0EA5E9;
            --dark-surface: #0B192C;
            --footer-bg: #0A111F;
            --bg-white: #FFFFFF;
            --bg-light: #F8FAFC;
            --bg-subtle: #F1F5F9;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
            --shadow-hover: 0 12px 20px -3px rgba(15, 63, 122, 0.08), 0 4px 6px -4px rgba(15, 63, 122, 0.04);
            --container-max: 1240px;
        }

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

        html {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            scroll-behavior: smooth;
            color: var(--text-body);
            background-color: var(--bg-white);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.25s ease;
        }

        button, input, select, textarea {
            font-family: inherit;
            outline: none;
        }

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

        /* 顶部通栏 */
        .topbar {
            background-color: #0F172A;
            color: #94A3B8;
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .topbar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .topbar-info span {
            margin-right: 20px;
        }

        .topbar-tags {
            display: flex;
            gap: 12px;
        }

        .badge-subtle {
            background: rgba(255, 255, 255, 0.1);
            color: #E2E8F0;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 11px;
            letter-spacing: 0.5px;
        }

        /* 统一导航 */
        .site-header {
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(8px);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
            border-bottom: 1px solid var(--border-color);
        }

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

        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.5px;
        }

        .logo-mark {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFF;
            font-size: 16px;
            font-weight: 900;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 28px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 6px 0;
            position: relative;
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            border: 1px solid transparent;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #FFF;
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(15, 63, 122, 0.2);
            transform: translateY(-1px);
        }

        .btn-secondary {
            background-color: #FFF;
            color: var(--primary);
            border-color: var(--border-color);
        }

        .btn-secondary:hover {
            background-color: var(--bg-light);
            border-color: #CBD5E1;
        }

        .btn-accent {
            background-color: var(--accent);
            color: #FFF;
        }

        .btn-accent:hover {
            background-color: #0284C7;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--text-main);
        }

        /* 区块通用结构 */
        section {
            padding: 96px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            max-width: 780px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }

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

        /* 1. Hero 旗舰展示 */
        #hero {
            padding: 70px 0 100px;
            background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-banner-frame {
            position: relative;
            border-radius: 20px;
            background: #0B192C url('/assets/images/c16d50c4f3a8d3ce.jpg') center/cover no-repeat;
            color: #FFF;
            padding: 80px 60px 100px;
            overflow: hidden;
            box-shadow: 0 20px 40px -15px rgba(11, 25, 44, 0.4);
        }

        .hero-banner-frame::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 25, 44, 0.95) 0%, rgba(11, 25, 44, 0.75) 60%, rgba(11, 25, 44, 0.4) 100%);
            z-index: 1;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .hero-badge-group {
            display: flex;
            gap: 12px;
            margin-bottom: 24px;
        }

        .hero-badge {
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #E2E8F0;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
        }

        .hero-title {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -1px;
            color: #FFFFFF;
        }

        .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: #CBD5E1;
            margin-bottom: 36px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        /* 系列导航条叠在大图下方卡片中 */
        .hero-series-bar {
            position: relative;
            z-index: 3;
            margin-top: -50px;
            padding: 0 30px;
        }

        .series-bar-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 24px 32px;
            box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
            border: 1px solid var(--border-color);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .series-item {
            border-right: 1px solid var(--border-color);
            padding-right: 20px;
        }

        .series-item:last-child {
            border-right: none;
            padding-right: 0;
        }

        .series-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }

        .series-name {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .series-name:hover {
            color: var(--primary);
        }

        /* 2. 优惠阶梯与样片试用计划 */
        #tiers {
            background-color: var(--bg-white);
        }

        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .tier-card {
            background: #FFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            box-shadow: var(--shadow-md);
            transition: all 0.3s ease;
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .tier-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #CBD5E1;
        }

        .tier-card.featured {
            border: 2px solid var(--primary);
            box-shadow: 0 12px 24px -4px rgba(15, 63, 122, 0.12);
        }

        .tier-ribbon {
            position: absolute;
            top: -12px;
            right: 24px;
            background: var(--primary);
            color: #FFF;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 12px;
        }

        .tier-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .tier-volume {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .tier-specs {
            list-style: none;
            margin-bottom: 30px;
            flex-grow: 1;
        }

        .tier-specs li {
            font-size: 14px;
            padding: 8px 0;
            border-bottom: 1px dashed var(--border-color);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tier-specs li::before {
            content: "✓";
            color: var(--accent);
            font-weight: 800;
        }

        /* 3. 架构与算力套餐对比 */
        #comparison {
            background-color: var(--bg-light);
        }

        .table-responsive {
            overflow-x: auto;
            background: #FFF;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }

        .compare-table th, .compare-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        .compare-table th {
            background: var(--bg-subtle);
            font-weight: 700;
            color: var(--text-main);
        }

        .compare-table tbody tr:hover {
            background-color: #F8FAFC;
        }

        .param-highlight {
            font-weight: 700;
            color: var(--primary);
        }

        /* 4. 限时评估入口 */
        #eval-portal {
            background: linear-gradient(135deg, #0F3F7A 0%, #0B192C 100%);
            color: #FFF;
            padding: 60px 0;
        }

        .portal-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
        }

        .portal-text h3 {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .portal-text p {
            font-size: 15px;
            color: #CBD5E1;
            max-width: 680px;
            line-height: 1.6;
        }

        /* 5. 爆款芯片与模组清单 */
        #popular-products {
            background: var(--bg-white);
        }

        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .product-card {
            background: #FFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .product-media {
            height: 200px;
            background: var(--bg-subtle);
            overflow: hidden;
            position: relative;
        }

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

        .product-card:hover .product-media img {
            transform: scale(1.04);
        }

        .product-content {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .product-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 6px;
        }

        .product-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .product-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 18px;
            line-height: 1.6;
            flex-grow: 1;
        }

        .pill-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }

        .pill-badge {
            background: var(--bg-subtle);
            color: var(--text-body);
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 4px;
            border: 1px solid var(--border-color);
        }

        /* 6. 技术痛点与架构优势 (结合图文) */
        #challenges-and-arch {
            background: var(--bg-light);
        }

        .dual-col-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .tech-feature-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .tech-item {
            background: #FFF;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .tech-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tech-item h4::before {
            content: "•";
            color: var(--primary);
            font-size: 20px;
        }

        .tech-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 7. 深色理念区：编译器与异构生态 */
        #compiler-ecosystem {
            background-color: var(--dark-surface);
            color: #FFF;
        }

        #compiler-ecosystem .section-title {
            color: #FFF;
        }

        #compiler-ecosystem .section-desc {
            color: #94A3B8;
        }

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

        .flow-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: all 0.3s;
        }

        .flow-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--accent);
            transform: translateY(-4px);
        }

        .flow-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #FFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            margin: 0 auto 16px;
        }

        .flow-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #F8FAFC;
        }

        .flow-card p {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.6;
        }

        /* 8. 场景解决方案落地 */
        #solutions {
            background: var(--bg-white);
        }

        .solution-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 60px;
        }

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

        .solution-row.reverse {
            direction: rtl;
        }

        .solution-row.reverse .solution-text {
            direction: ltr;
        }

        .solution-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            height: 300px;
        }

        .solution-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .solution-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .solution-text p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        /* 9. 核心落地指标条 */
        #metrics {
            background: var(--bg-subtle);
            padding: 60px 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

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

        .metric-item {
            padding: 10px;
        }

        .metric-value {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 8px;
            letter-spacing: -1px;
        }

        .metric-unit {
            font-size: 18px;
            font-weight: 600;
            color: var(--accent);
            margin-left: 2px;
        }

        .metric-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-body);
            margin-bottom: 4px;
        }

        .metric-sub {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 10. 评价墙 (客户与集成商声音) */
        #reviews {
            background: var(--bg-white);
        }

        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background: #FFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-content {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-body);
            margin-bottom: 20px;
            font-style: italic;
        }

        .reviewer-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }

        .reviewer-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
        }

        .reviewer-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-main);
        }

        .reviewer-org {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 11. 保障图标条 */
        #assurance {
            background: var(--bg-light);
            padding: 50px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .assurance-card {
            background: #FFF;
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .assurance-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
            font-weight: 800;
        }

        .assurance-info h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .assurance-info p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 12. 行业资讯与技术白皮书 */
        #news-insights {
            background: var(--bg-white);
        }

        .insights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .insight-card {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #FFF;
            transition: all 0.3s;
            display: flex;
            flex-direction: column;
        }

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

        .insight-thumb {
            height: 180px;
            background: var(--bg-subtle);
            overflow: hidden;
        }

        .insight-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .insight-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .insight-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .insight-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .insight-summary {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .insight-link {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* 13. 常见问题 (FAQ 手风琴) */
        #faq {
            background: var(--bg-light);
        }

        .faq-wrapper {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #FFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color 0.25s;
        }

        .faq-question {
            padding: 20px 24px;
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }

        .faq-icon {
            font-size: 18px;
            color: var(--primary);
            transition: transform 0.3s ease;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            background: #FAFCFF;
            color: var(--text-body);
            font-size: 14px;
            line-height: 1.7;
            padding: 0 24px;
        }

        .faq-item.active {
            border-color: #CBD5E1;
        }

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

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 0 24px 20px 24px;
        }

        /* 14. 加购与转化引导区 (CTA) */
        #order-guide {
            background: var(--bg-white);
            padding-bottom: 110px;
        }

        .cta-box {
            background: linear-gradient(135deg, #0F3F7A 0%, #071E3D 100%);
            border-radius: 20px;
            padding: 60px 48px;
            color: #FFF;
            box-shadow: 0 20px 40px -10px rgba(15, 63, 122, 0.25);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .cta-content h3 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-content p {
            font-size: 15px;
            color: #CBD5E1;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .cta-specs-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .cta-form {
            background: #FFF;
            padding: 32px;
            border-radius: var(--radius-lg);
            color: var(--text-main);
            box-shadow: var(--shadow-hover);
        }

        .cta-form h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            font-size: 14px;
            transition: border-color 0.2s;
        }

        .form-control:focus {
            border-color: var(--primary);
        }

        /* 统一页脚 */
        .site-footer {
            background: var(--footer-bg);
            color: #94A3B8;
            padding: 80px 0 30px;
            font-size: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: #FFF;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 13px;
            line-height: 1.7;
            color: #64748B;
            margin-bottom: 20px;
        }

        .footer-col h5 {
            color: #FFF;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a:hover {
            color: #FFF;
        }

        .footer-contact-item {
            display: flex;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 13px;
        }

        .footer-bottom {
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #64748B;
        }

        /* 响应式样式断点 */
        @media (max-width: 1024px) {
            .hero-title { font-size: 38px; }
            .hero-series-bar { margin-top: 24px; padding: 0; }
            .series-bar-card { grid-template-columns: repeat(2, 1fr); }
            .tier-grid, .product-grid, .review-grid, .insights-grid { grid-template-columns: repeat(2, 1fr); }
            .dual-col-layout, .solution-row, .cta-box { grid-template-columns: 1fr; }
            .flow-step-grid, .assurance-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .topbar { display: none; }
            .mobile-toggle { display: block; }
            .nav-menu {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: #FFF;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
            }
            .nav-menu.show { display: flex; }
            .hero-banner-frame { padding: 40px 24px; }
            .hero-title { font-size: 28px; }
            .series-bar-card { grid-template-columns: 1fr; }
            .series-item { border-right: none; border-bottom: 1px solid var(--border-color); padding-bottom: 12px; }
            .tier-grid, .product-grid, .review-grid, .insights-grid, .flow-step-grid, .assurance-grid, .metrics-grid { grid-template-columns: 1fr; }
            .portal-box { flex-direction: column; text-align: center; gap: 20px; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
            section { padding: 60px 0; }
        }