:root {
            --primary-color: #3b82f6;
            --primary-light: #60a5fa;
            --primary-dark: #2563eb;
            --secondary-color: #1d4ed8;
            --gradient-start: #3b82f6;
            --gradient-end: #2563eb;
            --light-color: #f8fafc;
            --dark-color: #1e293b;
            --success-color: #10b981;
            --card-bg: #ffffff;
        }
        
        body {
            background-color: #ffffff;
            color: #334155;
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            min-height: 100vh;
        }
        
        /* 呼吸动画效果 */
        @keyframes breathe {
            0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
            70% { box-shadow: 0 0 0 10px rgba(59, 130, 246, 0); }
            100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
        }
        
        .navbar {
            background-color: white;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            border-bottom: 1px solid rgba(30, 58, 138, 0.1);
        }
        
        .product-card {
            background: var(--card-bg);
            border: 1px solid rgba(30, 58, 138, 0.1);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(30, 58, 138, 0.1);
            border-color: rgba(59, 130, 246, 0.3);
        }
        
        .card-header {
            background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
            color: white;
            border-bottom: none;
        }
        
        .btn-primary {
            background: linear-gradient(90deg, var(--primary-light), var(--primary-dark));
            border: none;
            font-weight: 500;
            letter-spacing: 0.5px;
            position: relative;
            overflow: hidden;
        }
        
        .btn-primary:hover {
            background: linear-gradient(90deg, var(--primary-dark), var(--secondary-color));
            transform: translateY(-2px);
            animation: breathe 1.5s infinite;
        }
        
        .btn-outline-primary {
            border-color: var(--primary-color);
            color: var(--primary-color);
        }
        
        .btn-outline-primary:hover {
            background: var(--primary-color);
            color: white;
        }
        
        .section-title {
            position: relative;
            padding-bottom: 10px;
            font-weight: 600;
            color: var(--dark-color);
        }
        
        .section-title:after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-light), var(--primary-dark));
            border-radius: 3px;
        }
        
        .status-badge {
            font-size: 0.75rem;
            padding: 0.3rem 0.75rem;
            border-radius: 20px;
            font-weight: 500;
        }
        
        .image-gallery {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
        }
        
        .image-item img {
            border-radius: 8px;
            border: 1px solid rgba(30, 58, 138, 0.1);
            transition: all 0.3s ease;
        }
        
        .image-item img:hover {
            transform: scale(1.02);
            box-shadow: 0 10px 20px rgba(30, 58, 138, 0.1);
        }
        
        .download-link {
            background: white;
            border: 1px solid rgba(59, 130, 246, 0.2);
            transition: all 0.3s ease;
        }
        
        .download-link:hover {
            transform: translateY(-5px);
            border-color: var(--primary-light);
            box-shadow: 0 10px 20px rgba(30, 58, 138, 0.1);
            animation: breathe 2s infinite;
        }
        
        .footer {
            background-color: white;
            border-top: 1px solid rgba(30, 58, 138, 0.1);
        }
        
        .form-control {
            background: white;
            border: 1px solid rgba(30, 58, 138, 0.1);
            color: #334155;
        }
        
        .form-control:focus {
            background: white;
            border-color: var(--primary-light);
            color: #334155;
            box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.15);
        }
        
        .alert {
            background: white;
            border: 1px solid rgba(30, 58, 138, 0.1);
        }
        
        /* 科技感装饰元素 */
        .tech-decoration {
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            pointer-events: none;
            overflow: hidden;
            z-index: -1;
            opacity: 0.1;
        }
        
        .tech-decoration:before {
            content: "";
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, var(--primary-light) 0%, rgba(59, 130, 246, 0) 70%);
            top: -100px;
            right: -100px;
            border-radius: 50%;
            animation: pulse 6s infinite alternate;
        }
        
        .tech-decoration:after {
            content: "";
            position: absolute;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, var(--primary-light) 0%, rgba(59, 130, 246, 0) 70%);
            bottom: -50px;
            left: -50px;
            border-radius: 50%;
            animation: pulse 8s infinite alternate;
        }
        
        @keyframes pulse {
            0% { transform: scale(1); opacity: 0.1; }
            50% { transform: scale(1.1); opacity: 0.15; }
            100% { transform: scale(1); opacity: 0.1; }
        }
        
        /* 响应式调整 */
        @media (max-width: 768px) {
            .image-gallery {
                grid-template-columns: 1fr;
            }
        }