/* 主要内容样式 */
        .section-title {
            position: relative;
            display: inline-block;
            margin-bottom: 1.5rem;
            font-weight: 700;
            color: var(--primary-blue);
            font-size: 1.6rem;
            padding-bottom: 0.5rem;
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--gradient-secondary);
        }
        
        .card {
            background: var(--card-bg);
            overflow: hidden;
            transition: all 0.4s ease;
            box-shadow: var(--shadow-md);
            position: relative;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            backdrop-filter: blur(5px);
        }
        
        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--gradient-primary);
        }
        
        .card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        
        /* 下载页面标题区域 - 简化设计 */
        .downloads-header {
            text-align: center;
            margin-bottom: 2.5rem;
            padding: 3rem 0;
            background: linear-gradient(135deg, rgba(26, 35, 126, 0.95) 0%, rgba(40, 53, 147, 0.95) 100%);
            border-radius: 12px;
            color: white;
            position: relative;
            overflow: hidden;
        }
        
        .downloads-header h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            position: relative;
            z-index: 2;
            text-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
        }
        
        .downloads-header p {
            font-size: 1.2rem;
            opacity: 0.95;
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
            line-height: 1.6;
        }
        
        /* 下载列表样式 - 新闻中心风格大框 */
        .downloads-container {
            background: white;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            margin-bottom: 3rem;
            border: 1px solid var(--border-color);
            padding: 0;
        }
        
        .downloads-container-header {
            padding: 1.8rem 2rem;
            background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
            border-bottom: 1px solid var(--border-color);
        }
        
        .downloads-container-header h2 {
            color: var(--primary-blue);
            font-size: 1.8rem;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .downloads-container-body {
            padding: 2rem;
        }
        
        .download-list {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        
        /* 下载项样式 - 新闻中心风格 */
        .download-item {
            display: flex;
            align-items: center;
            padding: 1.5rem;
            background: white;
            border-radius: 10px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            border: 1px solid var(--border-color);
            position: relative;
        }
        
        .download-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: rgba(26, 35, 126, 0.2);
        }
        
        .download-image {
            width: 140px;
            height: 140px;
            flex-shrink: 0;
            border-radius: 8px;
            overflow: hidden;
            background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-blue);
        }
        
        .download-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .download-item:hover .download-image img {
            transform: scale(1.05);
        }
        
        .download-badge {
            position: absolute;
            top: 15px;
            left: 15px;
            background: var(--accent-gold);
            color: white;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.4rem 0.8rem;
            border-radius: 20px;
            box-shadow: var(--shadow-sm);
            z-index: 2;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        
        .download-content {
            flex: 1;
            padding: 0 1.5rem;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        
        .download-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 1rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px solid rgba(26, 35, 126, 0.1);
        }
        
        .download-title i {
            color: var(--accent-gold);
            font-size: 1.4rem;
        }
        
        .download-desc {
            color: var(--medium-text);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }
        
        .download-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 1rem;
            border-top: 1px solid var(--border-color);
        }
        
        .download-info {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            font-size: 0.9rem;
            color: var(--medium-text);
        }
        
        .download-info-item {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.5rem 1rem;
            background: rgba(26, 35, 126, 0.05);
            border-radius: 6px;
        }
        
        .download-info-item i {
            color: var(--primary-blue);
            font-size: 1rem;
        }
        
        .download-btn {
            background: var(--gradient-primary);
            color: white;
            padding: 0.8rem 1.8rem;
            font-weight: 600;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 1rem;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
        }
        
        .download-btn:hover {
            background: var(--gradient-secondary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        
        /* 使用说明样式优化 */
        .instructions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 1.8rem;
            margin-top: 1.5rem;
        }
        
        .instruction-item {
            padding: 2rem;
            background: white;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }
        
        .instruction-item:hover {
            border-color: var(--border-active);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        
        .file-type-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: rgba(26, 35, 126, 0.1);
            border-radius: 10px;
            margin-right: 0.5rem;
            color: var(--primary-blue);
            font-size: 1.2rem;
        }
 
        /* 响应式调整 */
        @media (max-width: 768px) {
            .download-item {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .download-image {
                width: 100%;
                height: 200px;
                margin-bottom: 1.5rem;
            }
            
            .download-content {
                width: 100%;
                padding: 0;
            }
            
            .download-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 1.5rem;
            }
            
            .download-info {
                width: 100%;
                justify-content: space-between;
                flex-wrap: wrap;
            }
            
            .download-info-item {
                margin-bottom: 0.8rem;
            }
            
            .download-btn {
                width: 100%;
                justify-content: center;
            }
            
            .downloads-header {
                padding: 2.5rem 1rem;
            }
            
            .downloads-header h1 {
                font-size: 2rem;
            }
            
            .downloads-header p {
                font-size: 1.1rem;
            }
            
            .site-header .container {
                flex-direction: column;
                text-align: center;
                gap: 1rem;
            }
            
            .logo {
                width: 250px;
                height: 70px;
            }
            
            .main-nav ul {
                justify-content: center;
            }
            
            .main-nav a {
                padding: 0.8rem 1rem;
                font-size: 0.85rem;
            }
            
            .instructions-grid {
                grid-template-columns: 1fr;
            }
            
            .downloads-container-header,
            .downloads-container-body {
                padding: 1.5rem;
            }
        }
        
        @media (max-width: 480px) {
            .downloads-header {
                padding: 2rem 1rem;
            }
            
            .downloads-header h1 {
                font-size: 1.8rem;
            }
            
            .download-title {
                font-size: 1.3rem;
            }
            
            .download-desc {
                font-size: 0.95rem;
            }
            
            .download-info {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }
            
            .download-info-item {
                width: 100%;
                justify-content: center;
            }
            
            .download-btn {
                padding: 0.8rem 1.5rem;
                font-size: 1rem;
            }
        }
        
        /* 动画效果 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }