/* roulang page: index */
:root {
            --primary: #1E40AF;
            --primary-dark: #1E3A8A;
            --primary-light: #3B82F6;
            --secondary: #0284C7;
            --accent: #0F766E;
            --text-main: #0F172A;
            --text-muted: #334155;
            --text-light: #64748B;
            --bg-body: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-dark: #0B192C;
            --border: #E2E8F0;
            --border-focus: #93C5FD;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 25px -5px rgba(30, 64, 175, 0.1), 0 8px 10px -6px rgba(30, 64, 175, 0.06);
            --transition: all 0.25s ease;
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button, input, select, textarea {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        .section {
            padding: 5.5rem 0;
            position: relative;
        }

        .section-alt {
            background-color: #FFFFFF;
        }

        .section-dark {
            background-color: var(--bg-dark);
            color: #F1F5F9;
        }

        .section-header {
            margin-bottom: 3.5rem;
            text-align: center;
        }

        .section-tag {
            display: inline-block;
            padding: 0.25rem 0.85rem;
            background-color: rgba(30, 64, 175, 0.08);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: 9999px;
            margin-bottom: 0.85rem;
            letter-spacing: 0.5px;
        }

        .section-dark .section-tag {
            background-color: rgba(2, 132, 199, 0.2);
            color: #38BDF8;
        }

        .section-title {
            font-size: 2.15rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 1rem;
        }

        .section-dark .section-title {
            color: #FFFFFF;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 780px;
            margin: 0 auto;
        }

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

        /* 顶部通栏 */
        .top-bar {
            background-color: #0F172A;
            color: #94A3B8;
            font-size: 0.825rem;
            padding: 0.5rem 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-items {
            display: flex;
            gap: 1.75rem;
        }

        .top-bar-item {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        /* 主导航 */
        .header-nav {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border);
            height: 72px;
            display: flex;
            align-items: center;
        }

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

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            list-style: none;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 0.5rem 0.25rem;
            position: relative;
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: #FFFFFF;
            padding: 0.6rem 1.4rem;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
        }

        .nav-btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-1px);
            color: #FFFFFF;
        }

        /* 移动端菜单切换 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
        }

        /* 通用按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.8rem 1.85rem;
            border-radius: var(--radius-sm);
            font-size: 0.975rem;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.2);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            box-shadow: 0 6px 18px rgba(30, 64, 175, 0.3);
            transform: translateY(-2px);
        }

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

        .btn-secondary:hover {
            border-color: var(--primary);
            background-color: #F8FAFC;
        }

        /* Hero 区块 */
        .hero-section {
            padding: 5rem 0 4rem;
            background: linear-gradient(180deg, #EFF6FF 0%, #F8FAFC 100%);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }

        .hero-banner-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3.5rem;
            align-items: center;
        }

        .hero-title {
            font-size: 2.85rem;
            font-weight: 800;
            line-height: 1.22;
            letter-spacing: -1px;
            color: var(--text-main);
            margin-bottom: 1.25rem;
        }

        .hero-title span {
            color: var(--primary);
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 2rem;
            line-height: 1.75;
        }

        .hero-actions {
            display: flex;
            gap: 1rem;
            margin-bottom: 2.5rem;
            flex-wrap: wrap;
        }

        .hero-badges {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            border-top: 1px solid var(--border);
            padding-top: 1.75rem;
        }

        .hero-badge-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-light);
            font-weight: 500;
        }

        .hero-visual {
            position: relative;
        }

        .hero-card-frame {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 0.75rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }

        .hero-img {
            border-radius: var(--radius-md);
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .hero-float-stat {
            position: absolute;
            bottom: -20px;
            left: -20px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 1.25rem 1.5rem;
            box-shadow: var(--shadow-lg);
            display: flex;
            gap: 1.25rem;
            align-items: center;
        }

        .hero-stat-num {
            font-size: 1.85rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
        }

        .hero-stat-label {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* 矩阵概览 */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3.5rem;
            align-items: center;
        }

        .overview-img-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
        }

        .overview-img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .metric-bar-group {
            margin-top: 2rem;
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .metric-item {
            background: #FFFFFF;
            padding: 1.2rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
        }

        .metric-item-top {
            display: flex;
            justify-content: space-between;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--text-main);
        }

        .metric-progress {
            width: 100%;
            height: 6px;
            background-color: #E2E8F0;
            border-radius: 999px;
            overflow: hidden;
        }

        .metric-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 999px;
        }

        .compliance-note {
            margin-top: 1.5rem;
            font-size: 0.85rem;
            color: var(--text-light);
            background: #F1F5F9;
            padding: 0.75rem 1rem;
            border-left: 3px solid var(--primary);
            border-radius: var(--radius-sm);
        }

        /* 核心六卡片 */
        .cards-grid-6 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .feature-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 2.25rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .feature-icon-box {
            width: 52px;
            height: 52px;
            background-color: #EFF6FF;
            color: var(--primary);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }

        .feature-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-main);
        }

        .feature-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 方案三卡片 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .solution-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .solution-cover {
            height: 200px;
            width: 100%;
            object-fit: cover;
        }

        .solution-body {
            padding: 2rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .solution-tag {
            display: inline-block;
            align-self: flex-start;
            padding: 0.2rem 0.6rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--secondary);
            background-color: #E0F2FE;
            border-radius: 4px;
            margin-bottom: 0.85rem;
        }

        .solution-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.85rem;
            color: var(--text-main);
        }

        .solution-desc {
            font-size: 0.925rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            flex: 1;
        }

        .solution-action {
            margin-top: auto;
        }

        /* 深色引擎架构 */
        .engine-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-top: 3rem;
            position: relative;
        }

        .engine-step {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            position: relative;
        }

        .engine-step-num {
            font-size: 0.8rem;
            font-weight: 700;
            color: #38BDF8;
            margin-bottom: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .engine-step-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: #FFFFFF;
        }

        .engine-step-text {
            font-size: 0.875rem;
            color: #94A3B8;
            line-height: 1.6;
        }

        /* 场景演示切换 */
        .scenario-container {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 2.5rem;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .scenario-tabs {
            background-color: #F8FAFC;
            border-right: 1px solid var(--border);
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .scenario-tab-btn {
            text-align: left;
            padding: 1rem 1.25rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-muted);
            background: transparent;
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }

        .scenario-tab-btn:hover {
            color: var(--primary);
            background: #EFF6FF;
        }

        .scenario-tab-btn.active {
            color: #FFFFFF;
            background-color: var(--primary);
        }

        .scenario-content-panel {
            padding: 2.5rem;
        }

        .scenario-view-box {
            display: none;
        }

        .scenario-view-box.active {
            display: block;
        }

        .scenario-header-row {
            margin-bottom: 1.5rem;
        }

        .scenario-panel-title {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 1.5rem;
            font-size: 0.9rem;
        }

        .comparison-table th, .comparison-table td {
            padding: 0.9rem 1rem;
            border: 1px solid var(--border);
            text-align: left;
        }

        .comparison-table th {
            background-color: #F1F5F9;
            color: var(--text-main);
            font-weight: 600;
        }

        .comparison-table .tag-red {
            color: #DC2626;
            font-weight: 600;
        }

        .comparison-table .tag-green {
            color: #16A34A;
            font-weight: 600;
        }

        /* 关键成效统计条 */
        .metrics-strip {
            background-color: #F1F5F9;
            padding: 3.5rem 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .metrics-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }

        .metrics-stat-box {
            padding: 1rem;
        }

        .metrics-value {
            font-size: 2.75rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 0.5rem;
        }

        .metrics-label {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.35rem;
        }

        .metrics-note {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* 客户故事双卡 */
        .case-grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }

        .case-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .case-img {
            height: 220px;
            width: 100%;
            object-fit: cover;
        }

        .case-body {
            padding: 2.25rem;
            position: relative;
        }

        .case-title {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-main);
        }

        .case-meta {
            font-size: 0.85rem;
            color: var(--secondary);
            font-weight: 600;
            margin-bottom: 0.75rem;
        }

        .case-paragraph {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            line-height: 1.7;
        }

        .case-stamp {
            position: absolute;
            bottom: 1.5rem;
            right: 1.5rem;
            border: 2px dashed #0F766E;
            color: #0F766E;
            padding: 0.35rem 0.75rem;
            font-size: 0.75rem;
            font-weight: 800;
            border-radius: 4px;
            transform: rotate(-10deg);
            opacity: 0.75;
        }

        /* 机构评价 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .testimonial-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 2rem;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .testimonial-stars {
            color: #F59E0B;
            margin-bottom: 1rem;
            letter-spacing: 2px;
        }

        .testimonial-quote {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 1.5rem;
            flex: 1;
        }

        .testimonial-author-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border);
            padding-top: 1rem;
        }

        .testimonial-author-name {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-main);
        }

        .testimonial-author-role {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        .testimonial-period {
            font-size: 0.75rem;
            background: #F1F5F9;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            color: var(--text-light);
        }

        /* 行业资讯 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .news-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
        }

        .news-thumb {
            height: 180px;
            width: 100%;
            object-fit: cover;
        }

        .news-content {
            padding: 1.75rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-meta-row {
            display: flex;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 0.75rem;
        }

        .news-card-title {
            font-size: 1.15rem;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text-main);
            margin-bottom: 0.75rem;
        }

        .news-summary {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1rem;
            flex: 1;
        }

        .news-bottom-action {
            text-align: center;
            margin-top: 3rem;
        }

        /* FAQ 手风琴 */
        .faq-wrapper {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .faq-item {
            background-color: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            padding: 1.25rem 1.5rem;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question:hover {
            background-color: #F8FAFC;
        }

        .faq-icon {
            font-size: 1.25rem;
            font-weight: 300;
            color: var(--text-light);
            transition: var(--transition);
        }

        .faq-answer {
            padding: 0 1.5rem 1.25rem;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
            border-top: 1px solid transparent;
        }

        .faq-item.active .faq-answer {
            display: block;
            border-top-color: #F1F5F9;
            padding-top: 1rem;
        }

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

        /* 资质墙 */
        .trust-bar {
            background-color: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 3rem 0;
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .trust-box {
            border: 1px solid var(--border);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            text-align: center;
            background: #F8FAFC;
        }

        .trust-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.35rem;
        }

        .trust-desc {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* 留资表单板块 */
        .form-section {
            background: linear-gradient(180deg, #FFFFFF 0%, #EFF6FF 100%);
        }

        .form-card {
            max-width: 800px;
            margin: 0 auto;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 3rem;
            box-shadow: var(--shadow-lg);
        }

        .lead-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        .form-group-full {
            grid-column: span 2;
        }

        .form-label {
            display: block;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--text-main);
        }

        .form-input, .form-select {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            color: var(--text-main);
            outline: none;
            transition: var(--transition);
        }

        .form-input:focus, .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.15);
        }

        .checkbox-group {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
            margin-top: 0.5rem;
        }

        .checkbox-label {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.875rem;
            color: var(--text-muted);
            cursor: pointer;
        }

        .form-submit-btn {
            width: 100%;
            padding: 0.95rem;
            background-color: var(--primary);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 1.05rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
        }

        .form-submit-btn:hover {
            background-color: var(--primary-dark);
        }

        /* 视口底部常驻浮动条 */
        .sticky-footer-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background-color: rgba(15, 23, 42, 0.96);
            backdrop-filter: blur(8px);
            color: #FFFFFF;
            padding: 0.85rem 1.5rem;
            z-index: 999;
            box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.15);
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .sticky-info {
            display: flex;
            align-items: center;
            gap: 2rem;
            font-size: 0.9rem;
        }

        .sticky-phone {
            font-weight: 700;
            color: #38BDF8;
        }

        .sticky-btn {
            background-color: var(--primary);
            color: #FFFFFF;
            padding: 0.55rem 1.4rem;
            border-radius: var(--radius-sm);
            font-size: 0.875rem;
            font-weight: 600;
        }

        .sticky-btn:hover {
            background-color: var(--primary-light);
        }

        /* 页脚 */
        .site-footer {
            background-color: #0B132B;
            color: #94A3B8;
            padding: 4.5rem 0 5rem;
            font-size: 0.875rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 3rem;
            margin-bottom: 3.5rem;
        }

        .footer-brand-name {
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 1rem;
        }

        .footer-brand-desc {
            line-height: 1.7;
            margin-bottom: 1.5rem;
            font-size: 0.875rem;
        }

        .footer-heading {
            font-size: 1rem;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 1.25rem;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

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

        .footer-contact-item {
            margin-bottom: 0.75rem;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: #64748B;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-banner-inner, .overview-grid, .case-grid-2 {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
            .cards-grid-6, .solutions-grid, .testimonials-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .engine-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-grid-4, .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-container {
                grid-template-columns: 1fr;
            }
            .scenario-tabs {
                border-right: none;
                border-bottom: 1px solid var(--border);
                flex-direction: row;
                overflow-x: auto;
            }
            .scenario-tab-btn {
                white-space: nowrap;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .top-bar {
                display: none;
            }
            .nav-links, .nav-btn {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .cards-grid-6, .solutions-grid, .testimonials-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .engine-flow {
                grid-template-columns: 1fr;
            }
            .lead-form {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }
            .sticky-info {
                display: none;
            }
            .sticky-footer-bar {
                justify-content: center;
            }
            .sticky-btn {
                width: 100%;
                text-align: center;
            }
        }

        /* 原生抽屉菜单样式 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            width: 100%;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            padding: 1.5rem;
            box-shadow: var(--shadow-lg);
            z-index: 998;
        }

        .mobile-drawer.open {
            display: block;
        }

        .mobile-nav-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .mobile-nav-list a {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-main);
            display: block;
            padding: 0.5rem 0;
        }