/* 基础样式重置 */
        body {
            font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
            margin: 0;
            padding: 0;
            color: #1a202c;
            line-height: 1.6;
            background-color: #ffffff;
        }
        .container { 
            width: 100%; 
            max-width: 1200px;
            margin: 0 auto;
        }
        
        /* 首屏 Hero 区域 */
        .hero {
            background-color: #0d1b2a;
            color: white;
            padding: 80px 40px;
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .hero-content {
            max-width: 600px;
            z-index: 2;
        }
        .hero h1 {
            font-size: 36px;
            margin: 0 0 20px 0;
            color: #e0e1dd;
            font-weight: 700;
            line-height: 1.2;
        }
        .hero p {
            font-size: 18px;
            color: #a2aebb;
            margin-bottom: 30px;
        }
        .cta-button {
            display: inline-block;
            background-color: #c9ada7;
            color: #22223b;
            padding: 15px 35px;
            font-weight: bold;
            text-decoration: none;
            border-radius: 4px;
            font-size: 16px;
            transition: background-color 0.3s ease;
        }
        .cta-button:hover {
            background-color: #b59b95;
        }
        .hero-image-wrapper {
            position: relative;
            z-index: 2;
        }
        .hero-image {
            width: 400px;
            border-radius: 8px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.5);
        }

        /* 多媒体视频区域 */
        .section-video {
            padding: 60px 40px;
            background-color: #f8f9fa;
        }
        .video-container {
            max-width: 900px;
            margin: 0 auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            background: #000;
        }
        .video-container video {
            width: 100%;
            display: block;
        }

        /* 核心参数区域 */
        .section-specs {
            padding: 60px 40px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .section-title {
            font-size: 28px;
            border-left: 5px solid #4a4e69;
            padding-left: 15px;
            margin-bottom: 30px;
            color: #22223b;
        }
        .specs-description {
            font-size: 16px;
            color: #4a5568;
            margin-bottom: 40px;
            text-align: justify;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 20px;
            font-size: 16px;
        }
        th {
            background-color: #4a4e69;
            color: white;
            text-align: left;
            padding: 15px 20px;
        }
        td {
            padding: 15px 20px;
            border-bottom: 1px solid #e2e8f0;
            color: #2d3748;
        }
        tr:nth-child(even) { background-color: #f7fafc; }
        tr:hover { background-color: #edf2f7; }

        /* 知识图谱/文章区域 */
        .section-articles {
            padding: 60px 40px;
            background-color: #ffffff;
            max-width: 1200px;
            margin: 0 auto;
        }
        .article-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .article-card {
            background: #fff;
            border: 1px solid #edf2f7;
            padding: 30px;
            border-radius: 8px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
        }
        .article-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }
        .article-card h3 {
            font-size: 20px;
            margin-top: 0;
            color: #2d3748;
            margin-bottom: 15px;
        }
        .article-card p {
            font-size: 15px;
            color: #718096;
            margin-bottom: 20px;
        }
        .article-link {
            color: #4a4e69;
            text-decoration: none;
            font-weight: bold;
            font-size: 15px;
        }
        .article-link::after {
            content: '';
            position: absolute;
            top: 0; right: 0; bottom: 0; left: 0;
            z-index: 1;
        } /* Stretched-link 实现 */

        /* 底部供应链背书区域 */
        .section-core {
            padding: 60px 40px;
            background-color: #22223b;
            color: #f2e9e4;
        }
        .section-core .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .core-text {
            font-size: 16px;
            line-height: 1.8;
            opacity: 0.9;
            max-width: 900px;
        }
        .core-text span {
            color: #c9ada7;
            font-weight: bold;
        }

        /* 页脚 */
        .footer {
            padding: 40px 40px;
            background-color: #0d1b2a;
            color: #94a3b8;
            text-align: center;
            font-size: 14px;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .hero {
                flex-direction: column;
                text-align: center;
                padding: 40px 20px;
            }
            .hero-image-wrapper {
                margin-top: 40px;
            }
            .hero-image {
                width: 100%;
                max-width: 400px;
            }
            .section-video, .section-specs, .section-articles, .section-core {
                padding: 40px 20px;
            }
        }