* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }

        body {
            background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
            color: #333;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 20px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 40px auto;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
            overflow: hidden;
            backdrop-filter: blur(10px);
        }

        header {
            background: linear-gradient(90deg, #ff0050, #ff3b30);
            color: white;
            padding: 25px 30px;
            text-align: center;
        }

        header h1 {
            font-size: 28px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        header p {
            opacity: 0.9;
            font-size: 16px;
        }

        .content {
            padding: 30px;
        }

        .input-group {
            margin-bottom: 25px;
        }

        label {
            display: block;
            margin-bottom: 10px;
            font-weight: 600;
            color: #444;
            font-size: 16px;
        }

        .input-with-icon {
            position: relative;
            display: flex;
        }

        .input-with-icon i {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #888;
            z-index: 1;
        }

        input, button, select {
            border: none;
            outline: none;
            border-radius: 12px;
            font-size: 16px;
        }

        input {
            width: 100%;
            padding: 15px 15px 15px 50px;
            border: 2px solid #e1e5ee;
            transition: all 0.3s;
        }

        input:focus {
            border-color: #ff0050;
            box-shadow: 0 0 0 3px rgba(255, 0, 80, 0.2);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 20px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            border-radius: 10px;
            font-size: 14px;
        }

        .btn-primary {
            background: linear-gradient(90deg, #ff0050, #ff3b30);
            color: white;
            width: 100%;
            padding: 15px 25px;
            font-size: 16px;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 7px 15px rgba(255, 0, 80, 0.4);
        }

        .btn-download {
            background: linear-gradient(90deg, #00c6ff, #0072ff);
            color: white;
        }

        .btn-download:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 10px rgba(0, 114, 255, 0.3);
        }

        .btn-copy {
            background: #28a745;
            color: white;
        }

        .btn-copy:hover {
            background: #218838;
            transform: translateY(-2px);
        }

        .btn-danger {
            background: #dc3545;
            color: white;
        }

        .btn-danger:hover {
            background: #c82333;
            transform: translateY(-2px);
        }

        .btn-refresh {
            background: #17a2b8;
            color: white;
        }

        .btn-refresh:hover {
            background: #138496;
        }

        .btn-cleanup {
            background: #ffc107;
            color: #212529;
        }

        .btn-cleanup:hover {
            background: #e0a800;
        }

        .btn-preview {
            background: #6f42c1;
            color: white;
        }

        .btn-preview:hover {
            background: #5a2d91;
            transform: translateY(-2px);
        }

        /* 弹窗样式 */
        .modal {
            display: none;
            position: fixed;
            z-index: 9999;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(8px);
        }

        .modal-content {
            background: white;
            margin: 5% auto;
            padding: 0;
            border-radius: 16px;
            width: 90%;
            max-width: 700px;
            max-height: 85vh;
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
            animation: modalSlideIn 0.3s ease-out;
            display: flex;
            flex-direction: column;
        }

        @keyframes modalSlideIn {
            from {
                opacity: 0;
                transform: translateY(-30px) scale(0.95);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }

        .modal-header {
            background: linear-gradient(135deg, #ff0050, #ff3b30);
            color: white;
            padding: 20px 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-shrink: 0;
        }

        .modal-header h3 {
            margin: 0;
            font-size: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .close-modal {
            background: rgba(255, 255, 255, 0.2);
            border: none;
            color: white;
            font-size: 22px;
            cursor: pointer;
            padding: 0;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: all 0.3s ease;
        }

        .close-modal:hover {
            background: rgba(255, 255, 255, 0.3);
        }

        .modal-body {
            padding: 25px;
            line-height: 1.65;
            color: #444;
            overflow-y: auto;
            flex: 1;
        }

        .file-preview-content {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 15px;
            max-height: 400px;
            overflow-y: auto;
            font-family: 'Courier New', monospace;
            font-size: 13px;
            white-space: pre-wrap;
            word-break: break-all;
        }

        .warning-box {
            background: linear-gradient(135deg, #fff3cd, #ffeaa7);
            border: 1px solid #ffd166;
            border-left: 5px solid #f9c74f;
            padding: 16px 20px;
            border-radius: 12px;
            margin: 20px 0;
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .warning-box i {
            color: #e76f51;
            font-size: 20px;
            margin-top: 2px;
        }

        .tips-list {
            margin: 20px 0;
            padding: 0;
            list-style: none;
        }

        .tips-list li {
            margin-bottom: 16px;
            padding: 14px 16px;
            background: #f8f9fa;
            border-radius: 10px;
            border-left: 4px solid #ff0050;
        }

        .modal-footer {
            padding: 20px 25px;
            text-align: center;
            background: #f8f9fa;
            border-top: 1px solid #e9ecef;
            flex-shrink: 0;
        }

        .btn-understand {
            background: linear-gradient(135deg, #00b894, #00cec9);
            color: white;
            padding: 12px 30px;
            border-radius: 10px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: all 0.3s ease;
            font-size: 15px;
        }

        .btn-understand:hover {
            transform: translateY(-2px);
        }

        .help-trigger {
            position: fixed;
            bottom: 25px;
            right: 25px;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, #ff0050, #ff3b30);
            color: white;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            box-shadow: 0 6px 20px rgba(255, 0, 80, 0.4);
            transition: all 0.3s ease;
            z-index: 1000;
        }

        .help-trigger:hover {
            transform: scale(1.1);
        }

        .parse-tips {
            background: linear-gradient(135deg, #e3f2fd, #bbdefb);
            border: 1px solid #90caf9;
            border-left: 5px solid #2196f3;
            padding: 16px 20px;
            border-radius: 12px;
            margin: 20px 0;
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .parse-tips i {
            color: #2196f3;
            font-size: 20px;
            margin-top: 2px;
        }

        .parse-tips a {
            color: #ff0050;
            text-decoration: none;
            font-weight: 600;
            margin-left: 8px;
        }

        .time-warning {
            background: linear-gradient(135deg, #fff3e0, #ffcc80);
            border: 1px solid #ffb74d;
            border-left: 5px solid #ff9800;
            padding: 14px 18px;
            border-radius: 10px;
            margin: 16px 0;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .time-warning i {
            color: #ff9800;
            font-size: 18px;
        }

        /* 结果区域样式 */
        .result-container {
            margin-top: 30px;
            display: none;
        }

        .result-box {
            background: #f8f9fa;
            border-radius: 12px;
            padding: 20px;
            margin-bottom: 20px;
            border-left: 4px solid #ff0050;
        }

        .result-title {
            font-weight: 600;
            margin-bottom: 10px;
            color: #444;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .video-count {
            display: inline-block;
            background: #ff0050;
            color: white;
            padding: 2px 8px;
            border-radius: 20px;
            font-size: 12px;
            margin-left: 5px;
        }

        .download-info {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: white;
            padding: 15px;
            border-radius: 10px;
            margin-top: 15px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
        }

        .file-name {
            font-weight: 600;
            color: #444;
        }

        .actions {
            display: flex;
            gap: 10px;
        }

        .loading {
            display: none;
            text-align: center;
            padding: 30px;
        }

        .spinner {
            border: 4px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top: 4px solid #ff0050;
            width: 40px;
            height: 40px;
            animation: spin 1s linear infinite;
            margin: 0 auto 15px;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .alert {
            padding: 15px;
            border-radius: 10px;
            margin-bottom: 20px;
            display: none;
        }

        .alert-error {
            background: #ffe6e6;
            color: #d63031;
            border-left: 4px solid #d63031;
        }

        .alert-success {
            background: #e6f7e6;
            color: #27ae60;
            border-left: 4px solid #27ae60;
        }

        /* 文件管理样式 */
        .file-manager {
            margin-top: 30px;
            border-top: 1px solid #e1e5ee;
            padding-top: 20px;
        }

        .file-manager-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            flex-wrap: wrap;
            gap: 10px;
        }

        .file-manager-actions {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .cleanup-controls {
            display: flex;
            align-items: center;
            gap: 10px;
            background: #f8f9fa;
            padding: 12px 15px;
            border-radius: 8px;
            margin-bottom: 15px;
        }

        .cleanup-controls select {
            padding: 8px 12px;
            border: 1px solid #ddd;
            border-radius: 6px;
            background: white;
        }

        .file-list {
            background: #f8f9fa;
            border-radius: 12px;
            overflow: hidden;
            max-height: 400px;
            overflow-y: auto;
        }

        .file-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
            border-bottom: 1px solid #e1e5ee;
            transition: background 0.3s;
        }

        .file-item:last-child {
            border-bottom: none;
        }

        .file-item:hover {
            background: #e9ecef;
        }

        .file-info {
            flex: 1;
        }

        .file-name {
            font-weight: 600;
            color: #444;
            margin-bottom: 5px;
            word-break: break-all;
        }

        .file-meta {
            font-size: 12px;
            color: #666;
        }

        .file-actions {
            display: flex;
            gap: 8px;
        }

        .btn-small {
            padding: 6px 12px;
            font-size: 12px;
            border-radius: 6px;
            white-space: nowrap;
        }

        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: #666;
        }

        .empty-state i {
            font-size: 48px;
            margin-bottom: 15px;
            color: #ccc;
        }

        .file-count {
            background: #6c757d;
            color: white;
            padding: 2px 8px;
            border-radius: 12px;
            font-size: 12px;
            margin-left: 8px;
        }

        /* 选择框样式 */
        .input-with-icon select {
            width: 100%;
            padding: 12px 12px 12px 40px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-size: 16px;
            background-color: white;
            outline: none;
            transition: border-color 0.3s;
        }

        .input-with-icon select:focus {
            border-color: #fe2c55;
            box-shadow: 0 0 0 2px rgba(254, 44, 85, 0.1);
        }

        /* 自动更新状态区域样式 */
        .auto-update-section {
            background: white;
            border-radius: 12px;
            padding: 24px;
            margin-top: 24px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
            border: 1px solid #e1e5e9;
        }

        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .section-header h3 {
            margin: 0;
            color: #333;
            font-size: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .auto-update-controls {
            display: block;
        }

        .auto-update-status {
            padding: 16px;
            border-radius: 8px;
            margin: 20px 0;
            background: #f0f9ff;
            border: 1px solid #bae6fd;
        }

        .status-indicator {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .status-indicator.running {
            color: #059669;
        }

        .status-indicator i {
            color: #10b981;
        }

        .status-info {
            font-size: 14px;
            color: #6b7280;
        }

        .update-history {
            margin-top: 24px;
        }

        .update-history h4 {
            margin: 0 0 16px 0;
            color: #333;
            font-size: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .history-list {
            max-height: 300px;
            overflow-y: auto;
            border: 1px solid #e5e7eb;
            border-radius: 8px;
        }

        .history-item {
            padding: 12px 16px;
            border-bottom: 1px solid #f3f4f6;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }

        .history-item:last-child {
            border-bottom: none;
        }

        .history-item.success {
            background: #f0fdf4;
        }

        .history-item.error {
            background: #fef2f2;
        }

        .history-time {
            font-size: 12px;
            color: #6b7280;
            min-width: 150px;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .history-details {
            flex: 1;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .history-count {
            font-size: 12px;
            color: #059669;
            font-weight: 600;
        }

        .plan-task-info {
            background: #fff3cd;
            border: 1px solid #ffeaa7;
            border-radius: 8px;
            padding: 16px;
            margin-top: 20px;
        }

        .plan-task-info h4 {
            margin: 0 0 12px 0;
            color: #856404;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .info-content {
            font-size: 14px;
            line-height: 1.5;
        }

        .info-content pre {
            background: #f8f9fa;
            padding: 12px;
            border-radius: 6px;
            margin: 8px 0;
            overflow-x: auto;
            font-size: 13px;
        }

        /* 邮件通知设置样式 */
        .email-notification-section {
            background: white;
            border-radius: 12px;
            padding: 24px;
            margin-top: 24px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
            border: 1px solid #e1e5e9;
        }

        .email-toggle {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .email-settings {
            border-top: 1px solid #e9ecef;
            padding-top: 20px;
        }

        .smtp-config {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 8px;
            margin-top: 20px;
            border: 1px solid #e9ecef;
        }

        .smtp-config h5 {
            margin: 0 0 16px 0;
            color: #495057;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .smtp-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-bottom: 20px;
        }

        .smtp-actions {
            display: flex;
            gap: 12px;
            justify-content: flex-start;
        }

        /* 解析记录管理样式 */
        .records-manager {
            margin-top: 30px;
            border-top: 1px solid #e1e5ee;
            padding-top: 20px;
        }

        .records-list {
            background: #f8f9fa;
            border-radius: 12px;
            overflow: hidden;
            max-height: 500px;
            overflow-y: auto;
        }

        .record-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
            border-bottom: 1px solid #e1e5ee;
            transition: background 0.3s;
        }

        .record-item:last-child {
            border-bottom: none;
        }

        .record-item:hover {
            background: #e9ecef;
        }

        .record-info {
            flex: 1;
        }

        .record-url {
            font-weight: 600;
            color: #444;
            margin-bottom: 5px;
            word-break: break-all;
        }

        .record-meta {
            font-size: 12px;
            color: #666;
            display: flex;
            gap: 15px;
        }

        .record-actions {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .auto-update-toggle {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .toggle-switch {
            position: relative;
            display: inline-block;
            width: 50px;
            height: 24px;
        }

        .toggle-switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }

        .toggle-slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: #ccc;
            transition: .4s;
            border-radius: 24px;
        }

        .toggle-slider:before {
            position: absolute;
            content: "";
            height: 16px;
            width: 16px;
            left: 4px;
            bottom: 4px;
            background-color: white;
            transition: .4s;
            border-radius: 50%;
        }

        input:checked + .toggle-slider {
            background-color: #2196F3;
        }

        input:checked + .toggle-slider:before {
            transform: translateX(26px);
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .file-item, .record-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .file-actions, .record-actions {
                width: 100%;
                justify-content: flex-end;
            }

            .file-manager-header {
                flex-direction: column;
                align-items: flex-start;
            }

            .file-manager-actions {
                width: 100%;
                justify-content: space-between;
            }

            .download-info {
                flex-direction: column;
                gap: 15px;
                align-items: flex-start;
            }

            .actions {
                width: 100%;
            }

            .history-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .history-time {
                min-width: auto;
            }

            .record-meta {
                flex-direction: column;
                gap: 5px;
            }

            .smtp-grid {
                grid-template-columns: 1fr;
            }
            
            .smtp-actions {
                flex-direction: column;
            }
        }