/* roulang page: index */
:root {
            --primary: #0F141C;
            --primary-light: #1A2230;
            --accent: #00E676;
            --accent-hover: #00C853;
            --accent-dim: rgba(0, 230, 118, 0.12);
            --cta-orange: #FF6D00;
            --cta-hover: #E65100;
            --surface-bg: #F8FAFC;
            --surface-white: #FFFFFF;
            --border-color: #E2E8F0;
            --border-dark: #2A364F;
            --text-main: #0F172A;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --text-on-dark: #F8FAFC;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-full: 9999px;
            --shadow-subtle: 0 4px 12px rgba(15, 23, 42, 0.04);
            --shadow-card: 0 10px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
            --shadow-elevated: 0 20px 35px -10px rgba(0, 0, 0, 0.12);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --transition-speed: 0.25s;
        }

        /* 基础重置 */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-stack);
            background-color: var(--surface-bg);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
            padding-bottom: 72px; /* 给常驻转化条留出位移 */
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-speed) ease, border-color var(--transition-speed) ease;
        }

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

        button, input, select, textarea {
            font-family: inherit;
            font-size: 1rem;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 顶部公用排版组件 */
        .section-header {
            text-align: center;
            max-width: 780px;
            margin: 0 auto 52px;
        }

        .kicker-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            background: var(--accent-dim);
            color: #059669;
            font-size: 0.825rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            border-radius: var(--radius-full);
            margin-bottom: 14px;
            border: 1px solid rgba(0, 230, 118, 0.3);
        }

        .kicker-badge.badge-dark {
            background: rgba(0, 230, 118, 0.15);
            color: var(--accent);
            border-color: rgba(0, 230, 118, 0.4);
        }

        .section-title {
            font-size: 2.15rem;
            font-weight: 800;
            line-height: 1.35;
            color: var(--text-main);
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .section-title.title-on-dark {
            color: var(--text-on-dark);
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .section-desc.desc-on-dark {
            color: var(--text-muted);
        }

        /* 按钮设计 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 0.975rem;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all var(--transition-speed) ease;
            border: 1px solid transparent;
            text-align: center;
            min-height: 48px;
        }

        .btn-accent {
            background-color: var(--accent);
            color: #032d18;
            border-color: var(--accent);
            font-weight: 700;
        }

        .btn-accent:hover {
            background-color: var(--accent-hover);
            box-shadow: 0 6px 20px rgba(0, 230, 118, 0.35);
            transform: translateY(-2px);
        }

        .btn-cta {
            background-color: var(--cta-orange);
            color: #ffffff;
            border-color: var(--cta-orange);
        }

        .btn-cta:hover {
            background-color: var(--cta-hover);
            box-shadow: 0 6px 20px rgba(255, 109, 0, 0.35);
            transform: translateY(-2px);
        }

        .btn-outline-white {
            background: transparent;
            color: #ffffff;
            border-color: rgba(255, 255, 255, 0.35);
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
        }

        .btn-outline-dark {
            background: transparent;
            color: var(--text-main);
            border-color: var(--border-color);
        }

        .btn-outline-dark:hover {
            background: #f1f5f9;
            border-color: var(--text-secondary);
        }

        /* 顶部双行导航 */
        .top-utility-bar {
            background-color: #0A0E14;
            color: var(--text-muted);
            font-size: 0.815rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 7px 0;
        }

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

        .utility-metrics {
            display: flex;
            gap: 20px;
        }

        .utility-metrics span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .utility-metrics span i {
            display: inline-block;
            width: 7px;
            height: 7px;
            background: var(--accent);
            border-radius: 50%;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: all var(--transition-speed) ease;
        }

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

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
        }

        .brand-logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #0F141C 0%, #1A2230 100%);
            border: 2px solid var(--accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 900;
            font-size: 1.1rem;
        }

        .main-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 28px;
        }

        .main-menu a {
            font-size: 0.925rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 6px 0;
            position: relative;
        }

        .main-menu a:hover, .main-menu a.active {
            color: var(--primary);
        }

        .main-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width var(--transition-speed) ease;
        }

        .main-menu a:hover::after, .main-menu a.active::after {
            width: 100%;
        }

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

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

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

        /* 模块基础边距与分层 */
        .page-section {
            padding: 88px 0;
            position: relative;
        }

        .section-white {
            background-color: var(--surface-white);
        }

        .section-slate {
            background-color: #F1F5F9;
        }

        .section-dark {
            background-color: var(--primary);
            color: var(--text-on-dark);
        }

        /* 1. 首屏 HERO：网格科技与节点接入 */
        .hero-section {
            position: relative;
            background-color: var(--primary);
            color: var(--text-on-dark);
            padding: 96px 0 100px;
            background-image: linear-gradient(180deg, rgba(15, 20, 28, 0.88) 0%, rgba(15, 20, 28, 0.96) 100%), url('/assets/images/b17475945280e6a3.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-dark);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.22;
            letter-spacing: -0.025em;
            margin-bottom: 22px;
            color: #FFFFFF;
        }

        .hero-content h1 span {
            color: var(--accent);
            text-shadow: 0 0 20px rgba(0, 230, 118, 0.35);
        }

        .hero-lead-text {
            font-size: 1.125rem;
            line-height: 1.8;
            color: #CBD5E1;
            margin-bottom: 34px;
            max-width: 620px;
        }

        .hero-action-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }

        .hero-node-pills {
            display: flex;
            align-items: center;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .node-tag {
            background: rgba(255, 255, 255, 0.06);
            padding: 5px 12px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: #E2E8F0;
        }

        .hero-card-panel {
            background: rgba(26, 34, 48, 0.75);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-elevated);
        }

        .panel-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 18px;
            margin-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .panel-title {
            font-size: 1rem;
            font-weight: 700;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .panel-status {
            font-size: 0.775rem;
            color: var(--accent);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .pipeline-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 14px;
            background: rgba(15, 20, 28, 0.6);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.875rem;
        }

        .pipeline-meta {
            color: #94A3B8;
        }

        .pipeline-val {
            color: var(--accent);
            font-weight: 700;
        }

        /* 2. 品牌故事与演进底座 */
        .story-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .story-media-box {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }

        .story-media-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(15, 20, 28, 0.9);
            color: #FFFFFF;
            padding: 12px 20px;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--accent);
            font-size: 0.875rem;
        }

        .story-text h3 {
            font-size: 1.85rem;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 18px;
            color: var(--text-main);
        }

        .story-text p {
            margin-bottom: 20px;
            color: var(--text-secondary);
            font-size: 1rem;
        }

        .compliance-pill-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
            margin-top: 26px;
        }

        .pill-card {
            background: #F8FAFC;
            border: 1px solid var(--border-color);
            padding: 14px 18px;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
        }

        .pill-card strong {
            display: block;
            color: var(--primary);
            margin-bottom: 4px;
        }

        /* 3. 系列导航 / 标注矩阵 */
        .matrix-tabs {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
            margin-bottom: 36px;
        }

        .matrix-tab-card {
            background: var(--surface-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-speed);
            cursor: pointer;
        }

        .matrix-tab-card:hover, .matrix-tab-card.active {
            border-color: var(--accent);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
        }

        .tab-icon-wrap {
            width: 44px;
            height: 44px;
            background: var(--surface-bg);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 1.25rem;
            color: var(--primary);
        }

        .matrix-tab-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .matrix-tab-card p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* 4. 爆款网格：解决方案卡片 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .solution-card {
            background: var(--surface-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: all var(--transition-speed);
            box-shadow: var(--shadow-subtle);
        }

        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-card);
            border-color: #CBD5E1;
        }

        .card-media {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

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

        .solution-card:hover .card-media img {
            transform: scale(1.05);
        }

        .card-badge {
            position: absolute;
            top: 14px;
            right: 14px;
            background: rgba(15, 20, 28, 0.85);
            backdrop-filter: blur(4px);
            color: var(--accent);
            font-size: 0.775rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
        }

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

        .card-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .card-desc {
            font-size: 0.925rem;
            color: var(--text-secondary);
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .card-specs {
            background: var(--surface-bg);
            border-radius: var(--radius-sm);
            padding: 12px;
            margin-bottom: 20px;
            font-size: 0.825rem;
            color: var(--text-secondary);
        }

        .spec-row {
            display: flex;
            justify-content: space-between;
            padding: 3px 0;
        }

        /* 5. 深色控制台 / 算法就绪度 */
        .console-box {
            background: linear-gradient(145deg, #131A26 0%, #0B0E14 100%);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: 44px;
            box-shadow: var(--shadow-elevated);
        }

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

        .terminal-window {
            background: #080B10;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.1);
            overflow: hidden;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
            font-size: 0.825rem;
        }

        .terminal-header {
            background: #111722;
            padding: 10px 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .terminal-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #475569;
        }

        .terminal-dot.red { background: #EF4444; }
        .terminal-dot.yellow { background: #F59E0B; }
        .terminal-dot.green { background: #10B981; }

        .terminal-body {
            padding: 20px;
            color: #94A3B8;
            line-height: 1.8;
        }

        .terminal-body .hl-key { color: #38BDF8; }
        .terminal-body .hl-num { color: #F43F5E; }
        .terminal-body .hl-str { color: var(--accent); }

        /* 6. 效能对比表格 */
        .comparison-table-wrapper {
            background: var(--surface-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-subtle);
        }

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

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

        .comparison-table th {
            background: #F8FAFC;
            font-weight: 700;
            color: var(--text-main);
            font-size: 0.95rem;
        }

        .comparison-table td {
            font-size: 0.925rem;
            color: var(--text-secondary);
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .col-highlight {
            background: rgba(0, 230, 118, 0.03);
            font-weight: 600;
            color: #0F172A !important;
            border-left: 2px solid rgba(0, 230, 118, 0.3);
            border-right: 2px solid rgba(0, 230, 118, 0.3);
        }

        .tag-success {
            display: inline-block;
            background: #DCFCE7;
            color: #166534;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        .tag-fail {
            display: inline-block;
            background: #FEE2E2;
            color: #991B1B;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
        }

        /* 7. 会员权益 / 算力与项目套餐 */
        .pricing-tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .tier-card {
            background: var(--surface-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            position: relative;
            transition: all var(--transition-speed);
        }

        .tier-card.featured {
            border-color: var(--accent);
            box-shadow: 0 12px 30px rgba(0, 230, 118, 0.15);
            transform: scale(1.02);
        }

        .tier-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #032D18;
            font-size: 0.775rem;
            font-weight: 800;
            padding: 4px 16px;
            border-radius: var(--radius-full);
            text-transform: uppercase;
        }

        .tier-name {
            font-size: 1.35rem;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .tier-summary {
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            min-height: 44px;
        }

        .tier-spec-list {
            list-style: none;
            margin-bottom: 32px;
        }

        .tier-spec-list li {
            font-size: 0.9rem;
            color: var(--text-secondary);
            padding: 8px 0;
            display: flex;
            align-items: center;
            gap: 10px;
            border-bottom: 1px dashed #F1F5F9;
        }

        .tier-spec-list li::before {
            content: '✓';
            color: var(--accent);
            font-weight: bold;
        }

        /* 8. 案例故事深入展示 */
        .case-study-card {
            background: var(--surface-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1fr;
            box-shadow: var(--shadow-card);
        }

        .case-content {
            padding: 48px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .case-kicker {
            color: var(--cta-orange);
            font-weight: 700;
            font-size: 0.85rem;
            margin-bottom: 12px;
        }

        .case-title {
            font-size: 1.65rem;
            font-weight: 800;
            margin-bottom: 18px;
            color: var(--text-main);
        }

        .case-quote {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.75;
        }

        .case-stats-row {
            display: flex;
            gap: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }

        .case-stat-num {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--primary);
        }

        .case-stat-label {
            font-size: 0.825rem;
            color: var(--text-muted);
        }

        .case-image-wrapper {
            position: relative;
            min-height: 380px;
        }

        .case-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* 9. 高冲击数据统计条 */
        .stats-counter-strip {
            background: #0A0E14;
            border-top: 1px solid var(--border-dark);
            border-bottom: 1px solid var(--border-dark);
            padding: 56px 0;
            color: #FFFFFF;
        }

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

        .stat-item {
            padding: 0 16px;
        }

        .stat-big-number {
            font-size: 2.75rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: 8px;
            letter-spacing: -0.03em;
        }

        .stat-caption {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 10. 资讯动态证据 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-card {
            background: var(--surface-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: all var(--transition-speed);
        }

        .news-card:hover {
            border-color: #CBD5E1;
            box-shadow: var(--shadow-card);
        }

        .news-meta {
            display: flex;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 14px;
        }

        .news-tag {
            background: #F1F5F9;
            color: var(--text-secondary);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        .news-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
            line-height: 1.45;
        }

        .news-card p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 18px;
        }

        .news-link {
            font-size: 0.875rem;
            color: var(--primary);
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 11. FAQ 手风琴 */
        .faq-accordion-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

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

        .faq-item[open] {
            border-color: #94A3B8;
        }

        .faq-summary {
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-summary::-webkit-details-marker {
            display: none;
        }

        .faq-summary::after {
            content: '+';
            font-size: 1.4rem;
            font-weight: 400;
            color: var(--text-muted);
            transition: transform var(--transition-speed);
        }

        .faq-item[open] .faq-summary::after {
            content: '−';
            color: var(--primary);
        }

        .faq-content {
            padding: 0 24px 22px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.75;
            border-top: 1px solid #F8FAFC;
        }

        /* 12. 保障图标条 */
        .guarantee-bar {
            background: #FFFFFF;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 42px 0;
        }

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

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

        .guarantee-icon {
            width: 48px;
            height: 48px;
            background: rgba(0, 230, 118, 0.12);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #059669;
            font-size: 1.25rem;
            font-weight: bold;
            flex-shrink: 0;
        }

        .guarantee-info strong {
            display: block;
            font-size: 0.95rem;
            color: var(--text-main);
            margin-bottom: 2px;
        }

        .guarantee-info span {
            font-size: 0.825rem;
            color: var(--text-muted);
        }

        /* 13. 底部收口表单转化区 */
        .cta-box {
            background: linear-gradient(135deg, #0F141C 0%, #1A2230 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
            border: 1px solid var(--border-dark);
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-info h3 {
            font-size: 2.15rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .cta-info p {
            color: #CBD5E1;
            font-size: 1rem;
            line-height: 1.75;
            margin-bottom: 24px;
        }

        .cta-form {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 28px;
            backdrop-filter: blur(8px);
        }

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

        .form-label {
            display: block;
            font-size: 0.85rem;
            color: #E2E8F0;
            margin-bottom: 6px;
            font-weight: 500;
        }

        .form-input, .form-select {
            width: 100%;
            height: 44px;
            padding: 0 14px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(15, 20, 28, 0.7);
            color: #FFFFFF;
            font-size: 0.9rem;
            outline: none;
            transition: border-color var(--transition-speed);
        }

        .form-input:focus, .form-select:focus {
            border-color: var(--accent);
        }

        /* 14. 底部常驻悬浮转化条 */
        .sticky-action-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(15, 20, 28, 0.95);
            backdrop-filter: blur(12px);
            border-top: 1px solid rgba(0, 230, 118, 0.3);
            z-index: 999;
            padding: 12px 0;
            box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.25);
            transition: transform 0.3s ease;
        }

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

        .sticky-text {
            color: #FFFFFF;
            font-size: 0.925rem;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .sticky-text span {
            color: var(--accent);
            font-weight: 700;
        }

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

        .sticky-phone {
            color: #FFFFFF;
            font-weight: 700;
            font-size: 1rem;
        }

        /* 统一页脚 */
        .site-footer {
            background: #080B10;
            color: var(--text-muted);
            padding: 72px 0 32px;
            border-top: 1px solid #1E293B;
            font-size: 0.875rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 48px;
            margin-bottom: 56px;
        }

        .footer-brand h4 {
            color: #FFFFFF;
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .footer-brand p {
            line-height: 1.7;
            margin-bottom: 18px;
            max-width: 320px;
        }

        .footer-links h5 {
            color: #FFFFFF;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

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

        .footer-links a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.815rem;
        }

        .footer-legal-pills {
            display: flex;
            gap: 18px;
        }

        /* 响应式断点适配 */
        @media (max-width: 1024px) {
            .hero-grid, .story-layout, .console-grid, .case-study-card, .cta-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .matrix-tabs {
                grid-template-columns: repeat(2, 1fr);
            }
            .solutions-grid, .pricing-tier-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid, .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .main-menu {
                display: none; /* 移动端抽屉处理 */
            }
            .mobile-menu-toggle {
                display: block;
            }
        }

        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.75rem;
            }
            .solutions-grid, .pricing-tier-grid, .news-grid, .matrix-tabs {
                grid-template-columns: 1fr;
            }
            .stats-grid, .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 14px;
                text-align: center;
            }
            .sticky-text {
                display: none;
            }
            .case-content {
                padding: 28px;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .utility-container {
                flex-direction: column;
                gap: 6px;
                text-align: center;
            }
        }