/* roulang page: index */
:root {
            --primary: #0C4A60;
            --primary-dark: #072e3d;
            --primary-light: #166a8a;
            --secondary: #475569;
            --accent: #0284C7;
            --accent-warm: #D97706;
            --bg-pure: #FFFFFF;
            --bg-light: #F8FAFC;
            --bg-deep: #07202B;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --border-light: #E2E8F0;
            --border-card: rgba(12, 74, 96, 0.12);
            --radius-sm: 4px;
            --radius-md: 8px;
            --shadow-subtle: 0 4px 20px -2px rgba(12, 74, 96, 0.06);
            --shadow-hover: 0 12px 28px -4px rgba(12, 74, 96, 0.14);
            --transition: all 0.28s ease-in-out;
            --font-stack: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            -webkit-tap-highlight-color: transparent;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            color: var(--text-main);
            background-color: var(--bg-pure);
            line-height: 1.75;
            overflow-x: hidden;
            text-rendering: optimizeLegibility;
        }

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

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部双行导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
        }

        .header-topbar {
            background-color: var(--primary-dark);
            color: #E2E8F0;
            font-size: 0.8125rem;
            padding: 7px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .topbar-left span {
            margin-right: 20px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .topbar-right {
            display: flex;
            gap: 15px;
            font-size: 0.75rem;
            color: #94A3B8;
        }

        .header-main {
            padding: 14px 0;
        }

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

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            font-weight: 900;
            font-size: 1.1rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 22px;
        }

        .nav-links a {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--secondary);
            padding: 6px 2px;
            position: relative;
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 0.9375rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
            min-height: 44px;
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(12, 74, 96, 0.22);
        }

        .btn-primary:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(12, 74, 96, 0.32);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-outline:hover {
            background-color: rgba(12, 74, 96, 0.05);
            transform: translateY(-2px);
        }

        .btn-amber {
            background-color: var(--accent-warm);
            color: #ffffff;
        }

        .btn-amber:hover {
            background-color: #B45309;
            transform: translateY(-2px);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
        }

        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            margin: 5px 0;
            transition: var(--transition);
        }

        /* 通用板块排版 */
        .section-block {
            padding: 85px 0;
            position: relative;
        }

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

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 52px;
        }

        .section-badge {
            display: inline-block;
            font-size: 0.8125rem;
            font-weight: 700;
            color: var(--primary);
            background: rgba(12, 74, 96, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.35;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 1. Hero 轮播与主转化 */
        .hero-section {
            background: linear-gradient(135deg, #F0FDF4 0%, #F8FAFC 50%, #E0F2FE 100%);
            padding: 70px 0 90px;
            border-bottom: 1px solid var(--border-light);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            align-items: center;
        }

        .hero-title {
            font-size: 2.65rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.25;
            margin-bottom: 20px;
        }

        .hero-title .highlight {
            color: var(--primary);
            display: inline-block;
        }

        .hero-summary {
            font-size: 1.0625rem;
            color: var(--secondary);
            margin-bottom: 30px;
            line-height: 1.8;
        }

        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .hero-credentials {
            display: flex;
            gap: 20px;
            align-items: center;
            border-top: 1px solid rgba(12, 74, 96, 0.12);
            padding-top: 24px;
        }

        .cred-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8125rem;
            font-weight: 600;
            color: var(--secondary);
        }

        .cred-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #10B981;
        }

        .hero-visual {
            position: relative;
        }

        .hero-image-frame {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: 0 20px 45px -10px rgba(12, 74, 96, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.8);
            position: relative;
        }

        .hero-floating-tag {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(7, 32, 43, 0.85);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            border-left: 3px solid var(--accent-warm);
        }

        /* 2. 合规实力与背景 */
        .about-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-img-box {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-subtle);
            border: 1px solid var(--border-light);
        }

        .about-spec-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 25px;
        }

        .spec-item {
            background: #fff;
            padding: 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
        }

        .spec-num {
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .spec-title {
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        /* 3. 核心优势六卡片 */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .adv-card {
            background: #fff;
            border: 1px solid var(--border-card);
            border-radius: var(--radius-sm);
            padding: 30px 24px;
            box-shadow: var(--shadow-subtle);
            transition: var(--transition);
            position: relative;
        }

        .adv-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .adv-card-icon {
            width: 48px;
            height: 48px;
            background: rgba(12, 74, 96, 0.06);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .adv-card h3 {
            font-size: 1.15rem;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .adv-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 4. 临床产品矩阵展示 */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .product-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            box-shadow: var(--shadow-subtle);
            transition: var(--transition);
        }

        .product-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(12, 74, 96, 0.3);
        }

        .product-thumb {
            position: relative;
            height: 220px;
            overflow: hidden;
            background: #EDF2F7;
        }

        .product-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .product-card:hover .product-thumb img {
            transform: scale(1.05);
        }

        .product-tag {
            position: absolute;
            top: 14px;
            right: 14px;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 2px;
            font-weight: 600;
        }

        .product-body {
            padding: 24px;
            flex-grow: 1;
        }

        .product-category {
            font-size: 0.8125rem;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 6px;
        }

        .product-name {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .product-params {
            list-style: none;
            margin: 16px 0;
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }

        .product-params li {
            font-size: 0.85rem;
            color: var(--secondary);
            margin-bottom: 8px;
            display: flex;
            justify-content: space-between;
        }

        .product-footer {
            padding: 16px 24px;
            background: var(--bg-light);
            border-top: 1px solid var(--border-light);
        }

        /* 5. 医院多科室临床应用场景 */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .scenario-box {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            padding: 30px;
            display: flex;
            gap: 20px;
            box-shadow: var(--shadow-subtle);
        }

        .scenario-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: 8px;
            background: rgba(12, 74, 96, 0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.25rem;
        }

        .scenario-content h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

        .scenario-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 14px;
        }

        .scenario-list {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .scenario-list span {
            background: var(--bg-light);
            font-size: 0.75rem;
            color: var(--secondary);
            padding: 3px 10px;
            border-radius: 2px;
            border: 1px solid var(--border-light);
        }

        /* 6. 对比差异区 */
        .compare-table-wrapper {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            box-shadow: var(--shadow-subtle);
        }

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

        .compare-table th, .compare-table td {
            padding: 18px 24px;
            font-size: 0.92rem;
            border-bottom: 1px solid var(--border-light);
        }

        .compare-table th {
            background: #F1F5F9;
            color: var(--text-main);
            font-weight: 700;
        }

        .compare-table th.brand-col,
        .compare-table td.brand-col {
            background: rgba(12, 74, 96, 0.03);
            font-weight: 600;
            color: var(--primary);
        }

        .check-badge {
            color: #059669;
            font-weight: 700;
            margin-right: 6px;
        }

        .cross-badge {
            color: #DC2626;
            font-weight: 700;
            margin-right: 6px;
        }

        /* 7. 深色学术理念与智造工艺深研 */
        .tech-dark-block {
            background: var(--bg-deep);
            color: #F8FAFC;
        }

        .tech-dark-block .section-title {
            color: #fff;
        }

        .tech-dark-block .section-desc {
            color: #94A3B8;
        }

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

        .tech-box {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            padding: 26px 20px;
            transition: var(--transition);
        }

        .tech-box:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(2, 132, 199, 0.5);
        }

        .tech-box-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 12px;
        }

        .tech-box h3 {
            font-size: 1.05rem;
            color: #fff;
            margin-bottom: 8px;
        }

        .tech-box p {
            font-size: 0.85rem;
            color: #94A3B8;
            line-height: 1.6;
        }

        /* 8. 实践案例与临床故事 */
        .stories-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .story-card {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            box-shadow: var(--shadow-subtle);
            display: flex;
            flex-direction: column;
        }

        .story-img {
            height: 220px;
            background: #CBD5E1;
            overflow: hidden;
        }

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

        .story-body {
            padding: 28px;
        }

        .story-hospital {
            font-size: 0.85rem;
            color: var(--accent);
            font-weight: 700;
            margin-bottom: 6px;
        }

        .story-body h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .story-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 18px;
            line-height: 1.7;
        }

        .story-meta {
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8125rem;
            color: var(--secondary);
        }

        /* 9. 产业关键数据统计条 */
        .stats-strip {
            background: linear-gradient(90deg, #0C4A60 0%, #072e3d 100%);
            color: #fff;
            padding: 55px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .stat-item .num {
            font-size: 2.75rem;
            font-weight: 900;
            line-height: 1;
            margin-bottom: 8px;
            font-feature-settings: "tnum";
            color: #38BDF8;
        }

        .stat-item .label {
            font-size: 0.9375rem;
            color: #E2E8F0;
            letter-spacing: 0.3px;
        }

        /* 10. 采购决策者评价反馈 */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            padding: 28px;
            box-shadow: var(--shadow-subtle);
            position: relative;
        }

        .review-stars {
            color: var(--accent-warm);
            font-size: 0.9rem;
            margin-bottom: 12px;
        }

        .review-text {
            font-size: 0.9rem;
            color: var(--secondary);
            line-height: 1.75;
            margin-bottom: 20px;
        }

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

        .reviewer-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: #E2E8F0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
        }

        .reviewer-meta h4 {
            font-size: 0.92rem;
            margin-bottom: 2px;
        }

        .reviewer-meta span {
            font-size: 0.775rem;
            color: var(--text-muted);
            display: block;
        }

        /* 11. 行业规范与资讯 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .news-card {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            box-shadow: var(--shadow-subtle);
            transition: var(--transition);
        }

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

        .news-content {
            padding: 24px;
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .news-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.45;
            color: var(--text-main);
        }

        .news-brief {
            font-size: 0.875rem;
            color: var(--secondary);
            line-height: 1.65;
            margin-bottom: 16px;
        }

        .news-link {
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 12. FAQ 手风琴 */
        .faq-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-subtle);
        }

        .faq-question {
            padding: 20px 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            color: var(--text-main);
            background: #fff;
            transition: var(--transition);
            user-select: none;
        }

        .faq-question:hover {
            background: var(--bg-light);
        }

        .faq-question::after {
            content: '+';
            font-size: 1.35rem;
            color: var(--primary);
            line-height: 1;
            transition: transform 0.25s;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: var(--bg-light);
            border-top: 1px solid transparent;
        }

        .faq-item.open .faq-answer {
            max-height: 250px;
            border-top-color: var(--border-light);
        }

        .faq-answer-inner {
            padding: 20px 24px;
            font-size: 0.92rem;
            color: var(--secondary);
            line-height: 1.8;
        }

        /* 13. 质量保障与合规服务条 */
        .guarantee-strip {
            background: #F1F5F9;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 40px 0;
        }

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

        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .g-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
        }

        .g-text h4 {
            font-size: 0.95rem;
            color: var(--text-main);
            margin-bottom: 3px;
        }

        .g-text p {
            font-size: 0.8125rem;
            color: var(--text-muted);
        }

        /* 14. 咨询与采购表单 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 45px;
            box-shadow: var(--shadow-subtle);
        }

        .contact-info h3 {
            font-size: 1.45rem;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .contact-info p {
            font-size: 0.9375rem;
            color: var(--secondary);
            line-height: 1.8;
            margin-bottom: 25px;
        }

        .contact-details {
            list-style: none;
        }

        .contact-details li {
            font-size: 0.9rem;
            margin-bottom: 14px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-main);
        }

        .contact-details li strong {
            color: var(--primary);
            min-width: 80px;
        }

        .contact-form-box {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-group label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 11px 14px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            background: #fff;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(12, 74, 96, 0.15);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 90px;
        }

        .privacy-note {
            font-size: 0.775rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 15. 底部固定转化条 */
        .fixed-floating-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: rgba(7, 32, 43, 0.96);
            backdrop-filter: blur(10px);
            color: #fff;
            z-index: 999;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 12px 0;
            box-shadow: 0 -4px 15px rgba(0, 0, 0, 0.15);
        }

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

        .floating-desc {
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .floating-desc strong {
            color: #38BDF8;
        }

        .floating-actions {
            display: flex;
            gap: 12px;
        }

        /* Footer */
        .site-footer {
            background: #04141C;
            color: #94A3B8;
            padding: 70px 0 90px; /* 留出浮动条高度 */
            font-size: 0.875rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            display: inline-block;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--primary-light);
        }

        .footer-links {
            list-style: none;
        }

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

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8125rem;
            color: #64748B;
        }

        /* 响应式样式适配 */
        @media (max-width: 1024px) {
            .hero-grid, .about-split, .contact-grid {
                grid-template-columns: 1fr;
            }
            .advantage-grid, .product-grid, .tech-dark-grid, .review-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid, .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .header-topbar {
                display: none;
            }
            .nav-links {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .advantage-grid, .product-grid, .tech-dark-grid, .review-grid, .news-grid, .stories-grid, .scenarios-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid, .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.65rem;
            }
            .floating-content {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }