/* 原有CSS样式保持不变 */
        .api-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }
        
        .api-card {
            background: #fff;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            overflow: hidden;
            border: 1px solid #eaeaea;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        
        .api-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 6px 16px rgba(0,0,0,0.12);
            border-color: #4dabf7;
        }
        
        .api-card-link {
            display: flex;
            flex-direction: column;
            height: 100%;
            text-decoration: none;
            color: inherit;
        }
        
        .api-card-header {
            padding: 15px 15px 10px;
            border-bottom: 1px solid #f0f0f0;
            position: relative;
        }
        
        .api-status-indicator {
            position: absolute;
            top: 10px;
            right: 10px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: #52c41a;
        }
        
        .api-title {
            font-size: 16px;
            font-weight: 600;
            margin: 0 0 5px 0;
            color: #1890ff;
            line-height: 1.3;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        
        .api-category {
            display: inline-block;
            background: #f0f7ff;
            color: #1890ff;
            font-size: 11px;
            padding: 2px 6px;
            border-radius: 4px;
            line-height: 1;
        }
        
        .api-card-body {
            padding: 12px 15px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        
        .api-description {
            font-size: 13px;
            color: #666;
            line-height: 1.5;
            margin: 0 0 10px 0;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            flex-grow: 1;
        }
        
        .api-meta-info {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        
        .api-meta-item {
            display: flex;
            align-items: center;
            font-size: 11px;
            color: #999;
        }
        
        .api-meta-item i {
            margin-right: 4px;
            width: 12px;
            text-align: center;
        }
        
        .api-card-footer {
            padding: 10px 15px;
            background: #fafafa;
            border-top: 1px solid #f0f0f0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .api-usage {
            display: flex;
            align-items: center;
            font-size: 12px;
            color: #666;
        }
        
        .api-call-count {
            font-weight: 600;
            color: #1890ff;
            margin: 0 4px;
        }
        
        .api-action .btn-view-api {
            font-size: 12px;
            color: #1890ff;
            padding: 4px 8px;
            border-radius: 4px;
            border: 1px solid #1890ff;
            transition: all 0.2s;
        }
        
        .api-card:hover .btn-view-api {
            background: #1890ff;
            color: white;
        }
        
        /* 响应式调整 */
        @media (max-width: 767px) {
            .api-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 15px;
            }
            
            .api-card-header {
                padding: 12px 12px 8px;
            }
            
            .api-card-body {
                padding: 10px 12px;
            }
            
            .api-card-footer {
                padding: 8px 12px;
            }
            
            .api-title {
                font-size: 15px;
            }
            
            .api-description {
                font-size: 12px;
                -webkit-line-clamp: 2;
            }
        }
        
        @media (min-width: 1200px) {
            .api-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        
        @media (min-width: 1400px) {
            .api-grid {
                grid-template-columns: repeat(5, 1fr);
            }
        }
        
        /* 空状态处理 */
        .api-list-empty {
            text-align: center;
            padding: 40px 20px;
            color: #999;
            grid-column: 1 / -1;
        }
        
        .api-list-empty i {
            font-size: 48px;
            margin-bottom: 15px;
            display: block;
        }
        
        /* 搜索样式优化 */
        .search-wraper {
            position: relative;
            max-width: 600px;
            margin: 0 auto;
        }
        
        .search-wraper .fa-search {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #999;
        }
        
        /* 返回顶部按钮 */
        #back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: none;
            width: 40px;
            height: 40px;
            line-height: 40px;
            text-align: center;
            background: #1890ff;
            color: white;
            border-radius: 50%;
            z-index: 1000;
            text-decoration: none;
            box-shadow: 0 2px 8px rgba(0,0,0,0.15);
        }
        
        #back-to-top:hover {
            background: #40a9ff;
            color: white;
        }
        
        /* 公告卡片样式 */
        .announcement-card {
            position: fixed;
            bottom: 20px;
            right: 20px;
            width: 380px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            z-index: 1000;
            border-left: 4px solid #1890ff;
            animation: slideIn 0.5s ease-out;
            max-height: 80vh;
            overflow-y: auto;
            display: none;
        }
        
        .announcement-card.mobile-device {
            width: 90vw;
            max-width: 320px;
            right: 5vw;
            bottom: 10px;
            font-size: 14px;
        }
        
        .announcement-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 15px;
            border-bottom: 1px solid #f0f0f0;
            background: #fafafa;
            border-radius: 10px 10px 0 0;
            position: sticky;
            top: 0;
            background: white;
            z-index: 1;
        }
        
        .announcement-header h5 {
            margin: 0;
            color: #1890ff;
            font-size: 14px;
            font-weight: bold;
        }
        
        .announcement-controls {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .countdown {
            font-size: 12px;
            color: #999;
        }
        
        .close-btn {
            background: none;
            border: none;
            font-size: 18px;
            cursor: pointer;
            color: #999;
            padding: 0;
            width: 20px;
            height: 20px;
            line-height: 1;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .close-btn:hover {
            color: #ff4d4f;
        }
        
        .announcement-content {
            padding: 15px;
            font-size: 13px;
            line-height: 1.5;
            color: #666;
        }
        
        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateX(100px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }
        
        @media (max-width: 480px) {
            .announcement-card.mobile-device {
                max-height: 70vh;
            }
        }