:root {
            --tech-blue: #4A90E2;
            --cyber-purple: #6C5CE7;
            --energy-green: #76C893;
        }

        body {
            margin: 0;
            min-height: 100vh;
            background: linear-gradient(135deg, #F0F4FF 0%, #E6F0FF 100%);
            font-family: 'Segoe UI', system-ui, sans-serif;
            color: #2D3436;
        }

        .container {
            max-width: 1500px;
            margin: 0 auto;
            padding: 60px 20px;
            position: relative;
        }

        /* 动态网格背景 */
        .grid-pattern {
            position: fixed;
            width: 100vw;
            height: 100vh;
            background-image: 
                linear-gradient(rgba(200, 210, 255, 0.08) 1px, transparent 1px),
                linear-gradient(90deg, rgba(200, 210, 255, 0.08) 1px, transparent 1px);
            background-size: 40px 40px;
            z-index: 0;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            background: linear-gradient(45deg, var(--tech-blue), var(--cyber-purple));
            -webkit-background-clip: text;
            color: transparent;
            margin-bottom: 50px;
            margin-left: 50px;
        }

        /* 场景卡片布局 */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 40px;
            position: relative;
            z-index: 2;
        }

        .scenario-card {
            position: relative;
            background: rgba(255, 255, 255, 0.96);
            border-radius: 16px;
            padding: 30px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
            border: 1px solid rgba(200, 210, 255, 0.3);
            transition: transform 0.3s;
            overflow: visible; /* 确保标签不被裁剪 */
        }

        .scenario-card:hover {
            transform: translateY(-8px);
        }

        .card-header {
            border-left: 4px solid var(--tech-blue);
            padding-left: 20px;
            margin-bottom: 25px;
        }

        .card-title {
            font-size: 1.4rem;
            color: #2D3436;
            margin: 0 0 10px 0;
        }

        .card-subtitle {
            color: var(--cyber-purple);
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .image-placeholder {
            height: 220px;
            background: rgba(200, 210, 255, 0.15);
            border-radius: 12px;
            margin-top: 25px;
            border: 2px dashed rgba(76, 175, 80, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #636E72;
            font-size: 0.9rem;
        }

        /* 特殊场景标识 */
        .environment-tag {
            position: absolute;
            top: -15px;
            right: -15px;
            background: var(--energy-green);
            color: white;
            padding: 6px 15px;
            border-radius: 20px;
            font-size: 0.85rem;
            box-shadow: 0 4px 15px rgba(118, 200, 147, 0.3);
        }

        /* 响应式布局增强 */
        @media (max-width: 768px) {
            .container {
                padding: 30px 15px;
            }

            .section-title {
                font-size: 2rem;
                margin-left: 0;
            }

            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .scenario-card {
                padding: 20px;
            }

            .card-header {
                padding-left: 15px;
            }

            .card-title {
                font-size: 1.2rem;
            }

            .image-placeholder {
                height: 180px;
            }

            .environment-tag {
                top: -10px;
                right: -10px;
                padding: 4px 12px;
                font-size: 0.8rem;
            }
        }

        @media (min-width: 769px) and (max-width: 1024px) {
            .container {
                padding: 40px 20px;
            }

            .section-title {
                font-size: 2.2rem;
                margin-left: 25px;
            }

            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
        }

        /* 优化图片显示 */
        .image-placeholder img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            object-fit: cover;
        }

        /* 确保内容在超小屏幕上也能正常显示 */
        @media (max-width: 576px) {
            .section-title {
                font-size: 1.8rem;
            }

            .scenario-card {
                margin: 0 10px;
            }

            .card-header {
                margin-bottom: 15px;
            }

            .image-placeholder {
                height: 150px;
            }
        }