/* roulang page: index */
:root {
            --primary: #0F52BA;
            --primary-hover: #0d449b;
            --primary-light: rgba(15, 82, 186, 0.08);
            --accent-green: #10B981;
            --accent-purple: #6366F1;
            --bg-light: #F8FAFC;
            --bg-white: #FFFFFF;
            --bg-dark: #0A0F1D;
            --bg-dark-card: #131B2E;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
            --border-dark: #1E293B;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
            --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 12px 24px -4px rgba(15, 23, 42, 0.08), 0 6px 12px -4px rgba(15, 23, 42, 0.04);
            --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1240px;
        }

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

        html {
            font-size: 16px;
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg-light);
            color: var(--text-body);
            line-height: 1.75;
            letter-spacing: 0.01em;
            overflow-x: hidden;
        }

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

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

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 统一头部样式 */
        .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: var(--transition);
        }

        .header-topbar {
            background-color: #0B132B;
            color: #94A3B8;
            font-size: 13px;
            padding: 7px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #E2E8F0;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background-color: var(--accent-green);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--accent-green);
        }

        .topbar-meta {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .main-nav-bar {
            padding: 14px 0;
        }

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

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.02em;
        }

        .logo-symbol {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent-purple));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFF;
            font-size: 18px;
            font-weight: 800;
            box-shadow: 0 4px 10px rgba(15, 82, 186, 0.3);
        }

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

        .nav-menu a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
            padding: 4px 0;
        }

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

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

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            gap: 8px;
            white-space: nowrap;
        }

        .btn:active {
            transform: scale(0.98);
        }

        .btn-primary {
            background-color: var(--primary);
            color: #FFF;
            box-shadow: 0 4px 12px rgba(15, 82, 186, 0.25);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            box-shadow: 0 6px 16px rgba(15, 82, 186, 0.35);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-heading);
        }

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

        .btn-accent {
            background-color: var(--accent-green);
            color: #FFF;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
        }

        .btn-accent:hover {
            background-color: #0ea372;
        }

        .btn-lg {
            padding: 14px 28px;
            font-size: 15px;
            border-radius: 8px;
        }

        .menu-toggle {
            display: none;
            background: none;
            cursor: pointer;
            padding: 6px;
        }

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

        /* 基础板块与排版样式 */
        .section-block {
            padding: 86px 0;
            position: relative;
        }

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

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

        .section-block.bg-dark {
            background-color: var(--bg-dark);
            color: #E2E8F0;
        }

        .section-header {
            text-align: center;
            max-width: 820px;
            margin: 0 auto 56px auto;
        }

        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            border-radius: 20px;
            margin-bottom: 14px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .section-tag.tag-dark {
            background: rgba(99, 102, 241, 0.16);
            color: #A5B4FC;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .section-block.bg-dark .section-title {
            color: #F8FAFC;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

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

        /* 1. 首屏模块 (Hero Section - #home) */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, rgba(10, 15, 29, 0.92) 0%, rgba(15, 23, 42, 0.88) 100%), url('/assets/images/bdafe631c3c96e13.webp') center/cover no-repeat;
            color: #FFF;
            padding: 96px 0 100px 0;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .hero-content h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }

        

        .hero-content h1 span {
            color: #38BDF8;
        }

        .hero-desc {
            font-size: 16px;
            color: #CBD5E1;
            line-height: 1.85;
            margin-bottom: 28px;
        }

        .hero-tags-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
        }

        .hero-tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            color: #E2E8F0;
        }

        .hero-tag-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-green);
        }

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

        /* 众筹公测预热进度卡片 */
        .hero-pledge-card {
            background: rgba(19, 27, 46, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(16px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

        .pledge-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .pledge-title {
            font-size: 18px;
            font-weight: 700;
            color: #FFF;
        }

        .pledge-phase {
            font-size: 12px;
            background: rgba(16, 185, 129, 0.2);
            color: var(--accent-green);
            padding: 4px 10px;
            border-radius: 12px;
            font-weight: 600;
        }

        .pledge-progress-box {
            display: flex;
            align-items: center;
            gap: 24px;
            margin-bottom: 24px;
        }

        .circular-progress {
            position: relative;
            width: 96px;
            height: 96px;
            flex-shrink: 0;
        }

        .circular-progress svg {
            width: 96px;
            height: 96px;
            transform: rotate(-90deg);
        }

        .circular-progress circle {
            fill: none;
            stroke-width: 8;
            stroke-linecap: round;
        }

        .circle-bg {
            stroke: rgba(255, 255, 255, 0.1);
        }

        .circle-bar {
            stroke: var(--primary);
            stroke-dasharray: 251.2;
            stroke-dashoffset: 35.16;
            transition: stroke-dashoffset 1s ease;
        }

        .progress-number {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 18px;
            font-weight: 700;
            color: #FFF;
        }

        .pledge-meta-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex-grow: 1;
        }

        .pledge-meta-item {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
        }

        .pledge-meta-item span:first-child {
            color: #94A3B8;
        }

        .pledge-meta-item span:last-child {
            color: #F8FAFC;
            font-weight: 600;
        }

        .tier-selector {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 24px;
        }

        .tier-option {
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-sm);
            padding: 12px 8px;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.03);
        }

        .tier-option.active, .tier-option:hover {
            border-color: var(--primary);
            background: rgba(15, 82, 186, 0.2);
        }

        .tier-name {
            font-size: 13px;
            font-weight: 600;
            color: #FFF;
            margin-bottom: 4px;
        }

        .tier-quota {
            font-size: 11px;
            color: #94A3B8;
        }

        /* 2. 行业痛点区 (Pain Points - #pain-points) */
        .pain-points-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .pain-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .pain-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(239, 68, 68, 0.3);
        }

        .pain-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: #EF4444;
        }

        .pain-alert-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: #EF4444;
            background: rgba(239, 68, 68, 0.08);
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 14px;
        }

        .pain-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .pain-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 3. 技术底座区 (About & Platform - #about) */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .about-image-wrapper {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }

        .about-image-wrapper img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: var(--transition);
        }

        .about-image-wrapper:hover img {
            transform: scale(1.03);
        }

        .about-spec-badge {
            position: absolute;
            bottom: 20px;
            right: 20px;
            background: rgba(15, 23, 42, 0.88);
            backdrop-filter: blur(8px);
            color: #FFF;
            padding: 12px 20px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.15);
            font-size: 13px;
        }

        .about-content h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 18px;
            line-height: 1.35;
        }

        .about-content p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .spec-checklist {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
            margin-bottom: 30px;
        }

        .spec-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-heading);
            font-weight: 500;
        }

        .spec-icon {
            width: 20px;
            height: 20px;
            background: rgba(16, 185, 129, 0.15);
            color: var(--accent-green);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
        }

        /* 4. 核心优势区 (Core Strengths - #strengths) */
        .strengths-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .strength-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .strength-card:hover {
            transform: translateY(-4px);
            border-color: rgba(15, 82, 186, 0.4);
            box-shadow: var(--shadow-lg);
        }

        .strength-icon-box {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .strength-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .strength-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* 5. 产品体系区 (Hot Products - #products) */
        .products-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

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

        .product-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(15, 82, 186, 0.35);
        }

        .product-cover {
            height: 190px;
            position: relative;
            overflow: hidden;
        }

        .product-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .product-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 23, 42, 0.85);
            color: #FFF;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

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

        .product-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .product-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .product-metrics-mini {
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            padding: 12px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
            margin-bottom: 20px;
            font-size: 12px;
        }

        .mini-metric-item span:first-child {
            color: var(--text-muted);
            display: block;
            margin-bottom: 2px;
        }

        .mini-metric-item span:last-child {
            font-weight: 700;
            color: var(--text-heading);
        }

        /* 6. 深色架构区 (Architecture - #architecture) */
        .arch-diagram-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        .arch-node-card {
            background: var(--bg-dark-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
        }

        .arch-node-card:hover {
            border-color: var(--accent-purple);
            transform: translateY(-3px);
        }

        .node-step {
            font-size: 12px;
            color: #818CF8;
            font-weight: 700;
            margin-bottom: 8px;
            text-transform: uppercase;
        }

        .arch-node-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: #F8FAFC;
            margin-bottom: 10px;
        }

        .arch-node-card p {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.7;
        }

        .terminal-code-box {
            background: #050811;
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 24px;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
            font-size: 13px;
            color: #38BDF8;
            overflow-x: auto;
        }

        .terminal-header {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .term-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
        }

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

        .terminal-code-box pre {
            white-space: pre-wrap;
            word-break: break-all;
            line-height: 1.6;
        }

        /* 7. 客户实战场景区 (Case Studies - #cases) */
        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

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

        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(15, 82, 186, 0.3);
        }

        .case-img-box {
            height: 220px;
            position: relative;
        }

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

        .case-content {
            padding: 28px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .case-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .case-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .case-stat-comparison {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }

        .comp-box span:first-child {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }

        .comp-box span:last-child {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
        }

        /* 8. 关键数据指标 (Metrics Bar - #metrics) */
        .metrics-bar-section {
            background: linear-gradient(135deg, #0F52BA 0%, #1E3A8A 100%);
            color: #FFF;
            padding: 64px 0;
        }

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

        .metric-unit-card {
            padding: 10px 20px;
            border-right: 1px solid rgba(255, 255, 255, 0.15);
        }

        .metric-unit-card:last-child {
            border-right: none;
        }

        .metric-val {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 8px;
            font-family:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
            letter-spacing: -0.02em;
        }

        .metric-title {
            font-size: 14px;
            color: #E2E8F0;
            font-weight: 500;
        }

        /* 9. 客户口碑评价 (Reviews - #reviews) */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .review-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

        .review-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(15, 82, 186, 0.3);
        }

        .review-quote {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 24px;
            position: relative;
        }

        .review-quote::before {
            content: "“";
            font-size: 40px;
            line-height: 1;
            color: rgba(15, 82, 186, 0.15);
            position: absolute;
            top: -16px;
            left: -10px;
            font-family: serif;
        }

        .reviewer-info {
            display: flex;
            align-items: center;
            gap: 14px;
            border-top: 1px solid var(--border-color);
            padding-top: 18px;
        }

        .reviewer-avatar {
            width: 44px;
            height: 44px;
            background: #E2E8F0;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
            font-size: 16px;
        }

        .reviewer-text h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
        }

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

        /* 10. 技术动态摘要 (News - #news) */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 26px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(15, 82, 186, 0.3);
        }

        .news-meta-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
            font-size: 12px;
        }

        .news-tag {
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        .news-date {
            color: var(--text-muted);
        }

        .news-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.45;
        }

        .news-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
            flex-grow: 1;
        }

        .news-link-btn {
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 11. 常见问题手风琴 (FAQ - #faq) */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

        .faq-summary {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            transition: var(--transition);
        }

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

        .faq-summary:hover {
            color: var(--primary);
            background: var(--bg-light);
        }

        .faq-icon-arrow {
            width: 18px;
            height: 18px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease;
            font-size: 14px;
            color: var(--text-muted);
        }

        details[open] .faq-icon-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-body {
            padding: 0 24px 22px 24px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            border-top: 1px solid transparent;
        }

        details[open] .faq-body {
            border-top-color: var(--border-color);
            padding-top: 16px;
        }

        /* 12. 最终行动转化区 (CTA - #cta) */
        .cta-box-card {
            background: linear-gradient(135deg, #0A0F1D 0%, #0F172A 100%), url('/assets/images/1a885a2525376810.png') center/cover no-repeat;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            color: #FFF;
            box-shadow: var(--shadow-lg);
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .cta-content-side h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }

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

        .cta-form-side {
            background: rgba(19, 27, 46, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 28px;
            backdrop-filter: blur(10px);
        }

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

        .form-group-item label {
            display: block;
            font-size: 13px;
            color: #E2E8F0;
            margin-bottom: 6px;
            font-weight: 500;
        }

        .form-control-input, .form-control-select {
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            color: #FFF;
            font-size: 14px;
            transition: var(--transition);
        }

        .form-control-input:focus, .form-control-select:focus {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.08);
            box-shadow: 0 0 0 2px rgba(15, 82, 186, 0.3);
        }

        .form-control-select option {
            background: #0A0F1D;
            color: #FFF;
        }

        /* 全局统一页脚 */
        .site-footer {
            background-color: #070B14;
            color: #94A3B8;
            font-size: 14px;
            border-top: 1px solid #1E293B;
            padding: 60px 0 24px 0;
        }

        .footer-grid-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            color: #FFF;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: #64748B;
            margin-bottom: 18px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #F8FAFC;
            margin-bottom: 16px;
        }

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

        .footer-links-list a {
            color: #94A3B8;
            font-size: 13px;
        }

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

        .footer-bottom-bar {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #64748B;
        }

        .footer-bottom-bar a {
            color: #64748B;
            margin-left: 14px;
        }

        .footer-bottom-bar a:hover {
            color: #CBD5E1;
        }

        /* 移动端与平板响应式适配 */
        @media (max-width: 1024px) {
            .hero-grid, .about-grid, .cta-box-card {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .pain-points-grid, .arch-diagram-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .strengths-grid, .products-grid, .reviews-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-topbar {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .nav-menu {
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #FFF;
                flex-direction: column;
                padding: 20px 24px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-lg);
                display: none;
                gap: 16px;
                align-items: flex-start;
            }
            .nav-menu.show {
                display: flex;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .section-title {
                font-size: 26px;
            }
            .pain-points-grid, .strengths-grid, .products-grid, .arch-diagram-grid, .reviews-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .metric-unit-card {
                border-right: none;
            }
            .cta-box-card {
                padding: 32px 20px;
            }
            .footer-grid-top {
                grid-template-columns: 1fr;
            }
            .footer-bottom-bar {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
        }