/* 主容器 */
        body {
            padding-top: 60px;
            background: var(--bg-light);
        }
        
        .main-content {
            min-height: calc(100vh - 60px);
            padding: 40px 0;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        
        /* 页面头部 */
        .page-header {
            background: white;
            border-radius: 12px;
            padding: 40px;
            margin-bottom: 40px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            border-top: 4px solid var(--primary-color);
        }
        
        .page-header h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 16px;
        }
        
        .page-header h1 i {
            color: var(--primary-color);
        }
        
        .page-header p {
            font-size: 1.1rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        
        /* 资料分类 */
        .resource-categories {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }
        
        .category-card {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            border: 2px solid var(--border-color);
            transition: all 0.3s ease;
        }
        
        .category-card:hover {
            border-color: var(--primary-color);
            box-shadow: 0 12px 32px rgba(0, 82, 217, 0.12);
            transform: translateY(-4px);
        }
        
        .category-header {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 20px;
        }
        
        .category-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: white;
        }
        
        .category-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-dark);
        }
        
        .category-desc {
            color: var(--text-light);
            margin-bottom: 24px;
            line-height: 1.6;
        }
        
        /* 文件列表 */
        .file-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        
        .file-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px;
            background: var(--bg-light);
            border-radius: 8px;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        
        .file-item:hover {
            background: white;
            border-color: var(--primary-color);
            box-shadow: 0 2px 8px rgba(0, 82, 217, 0.1);
        }
        
        .file-info {
            display: flex;
            align-items: center;
            gap: 12px;
            flex: 1;
        }
        
        .file-icon {
            width: 40px;
            height: 40px;
            background: var(--primary-color);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
        }
        
        .file-icon.pdf {
            background: #ef4444;
        }
        
        .file-icon.doc {
            background: #3b82f6;
        }
        
        .file-icon.img {
            background: #10b981;
        }
        
        .file-details {
            flex: 1;
        }
        
        .file-name {
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        
        .file-meta {
            font-size: 0.85rem;
            color: var(--text-light);
        }
        
        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--primary-color);
            color: white;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }
        
        .download-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 82, 217, 0.3);
        }
        
        /* 注意事项 */
        .notice-box {
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            border: 2px solid #bae6fd;
            border-radius: 12px;
            padding: 24px;
            margin-top: 40px;
        }
        
        .notice-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        
        .notice-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
        }
        
        .notice-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        
        .notice-content {
            color: #0369a1;
            line-height: 1.8;
        }
        
        .notice-content ul {
            list-style: none;
            padding: 0;
            margin: 12px 0 0 0;
        }
        
        .notice-content li {
            padding: 8px 0;
            padding-left: 28px;
            position: relative;
        }
        
        .notice-content li::before {
            content: "•";
            position: absolute;
            left: 12px;
            color: var(--primary-color);
            font-weight: 700;
            font-size: 1.2rem;
        }
        
        /* 响应式 */
        @media (max-width: 768px) {
            .page-header h1 {
                font-size: 1.8rem;
            }
            
            .resource-categories {
                grid-template-columns: 1fr;
            }
            
            .file-item {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            
            .download-btn {
                width: 100%;
                justify-content: center;
            }
        }

/* ===== 推荐文件标识（带发光特效和动画） ===== */

.highlight-file {
    position: relative;
    background: linear-gradient(135deg, #fff5e6, #ffffff) !important;
    border: 2px solid #ff8533 !important;
    animation: pulse-glow 2s ease-in-out infinite;
}

.highlight-file::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #ff6a00, #ff8533, #ffaa66, #ff6a00);
    background-size: 300% 300%;
    border-radius: 8px;
    z-index: -1;
    opacity: 0.3;
    filter: blur(8px);
    animation: gradient-rotate 3s ease infinite;
}

.highlight-file:hover {
    background: linear-gradient(135deg, #fff0d9, #ffffff) !important;
    border-color: #ff6a00 !important;
    box-shadow: 0 4px 20px rgba(255, 106, 0, 0.4), 0 0 30px rgba(255, 106, 0, 0.2) !important;
    transform: translateY(-4px) scale(1.02);
}

/* 推荐下载徽章 */
.file-badge {
    display: inline-flex;
    align-items: center;
    margin-left: 10px;
    padding: 3px 10px;
    background: linear-gradient(135deg, #ff6a00, #ff8533);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(255, 106, 0, 0.3);
    animation: badge-shine 2.5s ease-in-out infinite;
}

/* 发光脉冲动画 */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 2px 8px rgba(255, 106, 0, 0.2), 0 0 20px rgba(255, 106, 0, 0.1);
    }
    50% {
        box-shadow: 0 2px 12px rgba(255, 106, 0, 0.4), 0 0 30px rgba(255, 106, 0, 0.2);
    }
}

/* 渐变旋转动画 */
@keyframes gradient-rotate {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 徽章闪光动画 */
@keyframes badge-shine {
    0%, 100% {
        box-shadow: 0 2px 8px rgba(255, 106, 0, 0.3);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 2px 12px rgba(255, 106, 0, 0.5), 0 0 15px rgba(255, 106, 0, 0.3);
        transform: scale(1.05);
    }
}