/* 全局重置与变量定义 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        :root {
            --bg-main: #090d16;
            --bg-card: #131a26;
            --bg-card-hover: #1c2636;
            --text-primary: #ffffff;
            --text-secondary: #94a3b8;
            --accent-blue: #3b82f6;
            --accent-cyan: #06b6d4;
            --grad-primary: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
            --border-color: rgba(255, 255, 255, 0.08);
            --font-stack: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 统一流式布局容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航栏样式 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(9, 13, 22, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
        }

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

        .logo {
            display: flex;
            align-items: center;
        }

        .logo-img {
            height: 32px;
            width: auto;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            margin-left: 10px;
            background: var(--grad-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: -0.5px;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 32px;
        }

        .nav-item {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
            cursor: pointer;
        }

        .nav-item:hover {
            color: var(--text-primary);
        }

        .nav-btn {
            display: inline-block;
            text-decoration: none;
            background: var(--grad-primary);
            color: var(--text-primary);
            padding: 10px 20px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: opacity 0.3s ease;
        }

        .nav-btn:hover {
            opacity: 0.9;
        }

        /* Hero 主视觉区域 */
        .hero-section {
            padding: 180px 0 100px 0;
            position: relative;
            background: radial-gradient(circle at 50% 30%, rgba(59, 130, 246, 0.08) 0%, transparent 60%);
        }

        .hero-content {
            text-align: center;
            max-width: 850px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(59, 130, 246, 0.1);
            border: 1px solid rgba(59, 130, 246, 0.2);
            color: #60a5fa;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .hero-title {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 24px;
            background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 40px;
            padding: 0 20px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
        }

        .btn-primary {
            display: inline-block;
            text-decoration: none;
            background: var(--grad-primary);
            color: var(--text-primary);
            padding: 14px 28px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(59, 130, 246, 0.2);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-primary);
            padding: 14px 28px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: background 0.3s ease;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* 核心解决方案（网格布局） */
        .services-section {
            padding: 100px 0;
            border-top: 1px solid var(--border-color);
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .section-subtitle {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto;
        }

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

        .card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 40px 32px;
            transition: all 0.3s ease;
        }

        .card:hover {
            background-color: var(--bg-card-hover);
            border-color: rgba(59, 130, 246, 0.3);
            transform: translateY(-4px);
        }

        .card-icon {
            width: 48px;
            height: 48px;
            background: rgba(6, 182, 212, 0.1);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            color: var(--accent-cyan);
            font-size: 20px;
            font-weight: bold;
        }

        .card-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .card-body {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 24px;
        }

        .card-link {
            color: var(--accent-blue);
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            cursor: pointer;
        }

        /* 技术优势（列表与区块差异化） */
        .features-section {
            padding: 100px 0;
            background-color: rgba(255, 255, 255, 0.01);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .feature-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .feature-left h2 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 20px;
        }

        .feature-left p {
            color: var(--text-secondary);
            margin-bottom: 30px;
        }

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

        .feature-item {
            display: flex;
            gap: 16px;
        }

        .feature-marker {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            background: rgba(59, 130, 246, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-blue);
            font-size: 12px;
            font-weight: bold;
        }

        .feature-text h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .feature-text p {
            color: var(--text-secondary);
            font-size: 14px;
            margin: 0;
        }

        /* 硬件规范说明 */
        .specs-section {
            padding: 100px 0;
            background-color: rgba(255, 255, 255, 0.01);
            border-top: 1px solid var(--border-color);
        }

        .specs-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 40px;
        }

        .specs-table thead th {
            text-align: left;
            padding: 16px 20px;
            background: rgba(59, 130, 246, 0.08);
            border-bottom: 2px solid rgba(59, 130, 246, 0.3);
            font-size: 14px;
            font-weight: 700;
            color: #60a5fa;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .specs-table tbody td {
            padding: 18px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
            color: var(--text-secondary);
        }

        .specs-table tbody tr:hover td {
            background: rgba(255, 255, 255, 0.02);
            color: var(--text-primary);
        }

        .specs-table .spec-label {
            color: var(--text-primary);
            font-weight: 600;
            white-space: nowrap;
        }

        .specs-table .spec-highlight {
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .specs-badge {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .specs-badge.enterprise {
            background: rgba(59, 130, 246, 0.15);
            color: #60a5fa;
        }

        .specs-badge.pro {
            background: rgba(6, 182, 212, 0.15);
            color: #22d3ee;
        }

        .specs-badge.standard {
            background: rgba(148, 163, 184, 0.15);
            color: #94a3b8;
        }

        /* 数字化看版 / 数据指标展示 */
        .stats-section {
            padding: 80px 0;
            text-align: center;
        }

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

        .stat-box {
            padding: 30px;
            background: linear-gradient(180deg, rgba(255,255,255,0.02) 0%, transparent 100%);
            border: 1px solid var(--border-color);
            border-radius: 8px;
        }

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            background: var(--grad-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

        .stat-label {
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
        }

        /* 全局底部架构 */
        footer {
            background-color: #060910;
            border-top: 1px solid var(--border-color);
            padding: 80px 0 30px 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-brand p {
            color: var(--text-secondary);
            font-size: 14px;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links li a {
            color: var(--text-secondary);
            font-size: 14px;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .footer-links li a:hover {
            color: var(--text-primary);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-secondary);
            font-size: 13px;
        }

        .footer-legal span {
            margin-left: 24px;
            cursor: pointer;
        }

        .footer-legal span:hover {
            color: var(--text-primary);
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .grid-layout {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-container {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            .grid-layout, .stats-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 36px;
            }
            .footer-grid {
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 16px;
                text-align: center;
            }
        }