body {
            background-color: #EFF6FF;
            font-family: 'Arial', sans-serif;
        }
        .navbar-brand {
            font-weight: bold;
        }
        .platform-tab {
            cursor: pointer;
            transition: all 0.3s;
        }
        .platform-tab.active {
            background-color: #0d6efd;
            color: white;
        }
        .platform-tab:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .converter-container {
            max-width: 1300px;
            margin: 30px auto;
        }
        .result-area {
            min-height: 100px;
            border: 1px dashed #ccc;
            border-radius: 5px;
            padding: 15px;
            margin-top: 20px;
            background-color: #f8f9fa;
        }
        .loading {
            display: none;
            text-align: center;
            margin: 20px 0;
        }
        .spinner-border {
            width: 3rem;
            height: 3rem;
        }
        .action-buttons {
            margin-top: 15px;
        }
        .platform-icon {
            width: 24px;
            height: 24px;
            margin-right: 8px;
            object-fit: contain;
        }
        .batch-input {
            height: 200px;
            min-height: 200px;
            width: 100%;
            padding: 10px;
            border: 1px solid #ced4da;
            border-radius: 4px;
            font-family: inherit;
            font-size: 14px;
            line-height: 1.5;
            resize: vertical; /* 允许垂直调整大小 */
            transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
        }
        /* 添加焦点样式增强用户体验 */
        .batch-input:focus {
            border-color: #86b7fe;
            outline: 0;
            box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
        }
        .result-item {
            border: 1px solid #dee2e6;
            border-radius: 5px;
            padding: 10px;
            margin-bottom: 10px;
            background: white;
        }
        .switch {
            position: relative;
            display: inline-block;
            width: 60px;
            height: 34px;
        }
        .switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }
        .slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: #ccc;
            transition: .4s;
            border-radius: 34px;
        }
        .slider:before {
            position: absolute;
            content: "";
            height: 26px;
            width: 26px;
            left: 4px;
            bottom: 4px;
            background-color: white;
            transition: .4s;
            border-radius: 50%;
        }
        input:checked + .slider {
            background-color: #0d6efd;
        }
        input:checked + .slider:before {
            transform: translateX(26px);
        }

        
        /* 新增动画效果 */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        
        @keyframes slideInRight {
            from { transform: translateX(50px); opacity: 0; }
            to { transform: translateX(0); opacity: 1; }
        }
        
        /* 主容器动画 */
        .converter-container {
            max-width: 1300px;
            margin: 30px auto;
            animation: fadeIn 0.6s ease-out forwards;
        }
        
        /* 卡片悬停效果 */
        .card {
            transition: all 0.3s ease;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }
        
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        
        /* 平台标签增强效果 */
        .platform-tab {
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            position: relative;
            overflow: hidden;
        }
        
        .platform-tab::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: all 0.6s;
        }
        
        .platform-tab:hover::before {
            left: 100%;
        }
        
        
        /* 按钮动画 */
        .btn {
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        
        .btn::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 5px;
            height: 5px;
            background: rgba(255, 255, 255, 0.5);
            opacity: 0;
            border-radius: 100%;
            transform: scale(1, 1) translate(-50%, -50%);
            transform-origin: 50% 50%;
        }
        
        .btn:focus:not(:active)::after {
            animation: ripple 1s ease-out;
        }
        
        @keyframes ripple {
            0% {
                transform: scale(0, 0);
                opacity: 0.5;
            }
            100% {
                transform: scale(20, 20);
                opacity: 0;
            }
        }
        
        /* 转换按钮特殊效果 */
        #convertBtn {
            transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
        }
        
        #convertBtn:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 5px 15px rgba(13, 110, 253, 0.3);
        }
        
        #convertBtn:active {
            transform: translateY(1px);
        }
        
        /* 结果区域动画 */
        .result-area {
            min-height: 100px;
            border: 1px dashed #ccc;
            border-radius: 5px;
            padding: 15px;
            margin-top: 20px;
            background-color: #f8f9fa;
            animation: fadeIn 0.5s ease-out;
        }
        
        .result-item {
            border: 1px solid #dee2e6;
            border-radius: 5px;
            padding: 10px;
            margin-bottom: 10px;
            background: white;
            transition: all 0.3s ease;
            animation: slideInRight 0.4s ease-out forwards;
        }
        
        .result-item:hover {
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            transform: translateY(-3px);
        }
        
        /* 加载动画增强 */
        .loading {
            display: none;
            text-align: center;
            margin: 20px 0;
        }
        
        .spinner-border {
            width: 3rem;
            height: 3rem;
            animation: spin 1s linear infinite, pulse 1.5s ease infinite;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        /* 输入框动画 */
        .batch-input {
            height: 200px;
            min-height: 200px;
            width: 100%;
            padding: 10px;
            border: 1px solid #ced4da;
            border-radius: 4px;
            font-family: inherit;
            font-size: 14px;
            line-height: 1.5;
            resize: vertical;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        .batch-input:focus {
            border-color: #86b7fe;
            outline: 0;
            box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
            transform: scale(1.005);
        }
        
        /* 导航栏动画 */
        .navbar {
            transition: all 0.3s ease;
        }
        
        .navbar-brand {
            transition: all 0.3s ease;
        }
        
        .navbar-brand:hover {
            transform: scale(1.05);
        }
        
        /* 响应式调整 */
        @media (max-width: 768px) {
            .platform-tab {
                animation: none !important;
            }
            
            .result-item {
                animation: fadeIn 0.4s ease-out !important;
            }
        }