:root {
            --primary-color: #409eff;
            --success-color: #67c23a;
            --warning-color: #e6a23c;
            --danger-color: #f56c6c;
            --info-color: #909399;
            --primary-bg: #ecf5ff;
            --border-color: #dcdfe6;
            --text-primary: #303133;
            --text-regular: #606266;
            --text-secondary: #909399;
            --text-placeholder: #c0c4cc;
            --background-color: #f5f7fa;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            background-color: var(--background-color) !important;
            color: var(--text-primary);
            line-height: 1.6;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        /* 确保自定义样式不被 Bootstrap 覆盖 */
        body > .container {
            max-width: 1200px !important;
            margin: 0 auto !important;
            padding: 20px !important;
        }
        
        .header {
            text-align: center !important;
            padding: 30px 0 !important;
            background: white !important;
            border-radius: 8px !important;
            margin-bottom: 20px !important;
            box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1) !important;
        }

         .header h1 {
            font-size: 1.5rem !important;
            color: var(--primary-color) !important;
            margin-bottom: 10px !important;
            font-weight: bold !important;
        }

        .header p {
            font-size: 0.8rem !important;
            color: var(--text-regular) !important;
            margin: 0 !important;
        }
        
        .steps {
            display: flex;
            justify-content: space-between;
            margin-bottom: 30px;
            background: white;
            border-radius: 8px;
            padding: 20px;
            box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
        }
        
        .step {
            text-align: center;
            flex: 1;
            position: relative;
        }
        
        .step:not(:last-child):after {
            content: '';
            position: absolute;
            top: 20px;
            right: 0;
            width: 1px;
            height: 40px;
            background-color: var(--border-color);
        }
        
        .step-number {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--info-color);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 10px;
            font-weight: bold;
        }
        
        .step.active .step-number {
            background-color: var(--primary-color);
        }
        
        .step.completed .step-number {
            background-color: var(--success-color);
        }
        
        .step-title {
            font-weight: bold;
            margin-bottom: 5px;
        }
        
        .step-desc {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        
        .content {
            background: white !important;
            border-radius: 8px !important;
            padding: 30px !important;
            box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1) !important;
            min-height: 400px !important;
        }
        
        .section {
            display: none;
        }
        
        .section.active {
            display: block;
        }
        
        h2 {
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        
        .subtitle {
            color: var(--text-secondary);
            margin-bottom: 30px;
        }
        
        .checkbox-group {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 15px;
            margin-bottom: 30px;
        }
        
        .checkbox-item {
            display: flex;
            align-items: center;
        }
        
        .checkbox-item input {
            margin-right: 8px;

        }
        
        .button-group {
            display: flex;
            justify-content: space-between;
            margin-top: 30px;
        }
        
        button {
            padding: 12px 24px;
            border-radius: 4px;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            transition: all 0.3s;
        }
        
        .btn-primary {
            background-color: var(--primary-color);
            color: white;
        }
        
        .btn-primary:hover {
            opacity: 0.9;
        }
        
        .btn-default {
            background-color: #fff;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
        }
        
        .btn-default:hover {
            background-color: #f5f7fa;
        }
        
        .btn-disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }
        
        .journal-types {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }
        
        .journal-type-card {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .journal-type-card:hover {
            border-color: var(--primary-color);
            box-shadow: 0 2px 12px 0 rgba(64, 158, 255, 0.2);
        }
        
        .journal-type-card.selected {
            border-color: var(--primary-color);
            background-color: var(--primary-bg);
        }
        
        .journal-type-card h3 {
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        
        .journal-type-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        
        .slider-container {
            margin: 30px 0;
        }
        
        .slider-labels {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
        }
        
        .range-inputs {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-top: 15px;
        }
        
        input[type="number"] {
            width: 100px;
            padding: 8px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
        }
        
        .range-separator {
            color: var(--text-secondary);
        }
        
        .loading {
            text-align: center;
            padding: 50px 0;
        }
        
        .spinner {
            border: 4px solid rgba(0, 0, 0, 0.1);
            border-left-color: var(--primary-color);
            border-radius: 50%;
            width: 40px;
            height: 40px;
            animation: spin 1s linear infinite;
            margin: 0 auto 20px;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        .results {
            display: grid;
            gap: 20px;
        }
        
        .journal-card {
            border: 1px solid var(--border-color) !important;
            border-radius: 8px !important;
            padding: 20px !important;
            margin-bottom: 15px !important;
            background: white !important;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05) !important;
        }
        
        .journal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }
        
        .journal-name {
            font-size: 1.2rem;
            font-weight: bold;
        }
        
        .journal-en-name {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-top: 5px;
        }
        
        .tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 15px;
        }
        
        .tag {
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
        }
        
        .tag-primary {
            background-color: var(--primary-bg);
            color: var(--primary-color);
        }
        
        .tag-success {
            background-color: #f0f9eb;
            color: var(--success-color);
        }
        
        .tag-warning {
            background-color: #fdf6ec;
            color: var(--warning-color);
        }
        
        .journal-details {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
            margin-bottom: 15px;
        }
        
        .detail-item {
            display: flex;
            flex-direction: column;
        }
        
        .detail-label {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        
        .detail-value {
            font-weight: bold;
        }
        
        .journal-description {
            margin-bottom: 15px;
            color: var(--text-regular);
        }
        
        .recommendation-reason {
            background-color: #f0f9eb;
            border-left: 4px solid var(--success-color);
            padding: 10px;
            margin-bottom: 15px;
        }
        
        .submit-link {
            display: inline-block;
            color: var(--primary-color);
            text-decoration: none;
        }
        
        .submit-link:hover {
            text-decoration: underline;
        }
		/* 美化导航按钮 */
        .nav-buttons {
            margin-top: 15px !important;
            display: flex !important;
            gap: 10px !important;
            justify-content: center !important;
        }

        .nav-button {
            display: inline-flex !important;
            align-items: center !important;
            justify-content: center !important;
            padding: 5px 10px !important;
            border-radius: 6px !important;
            text-decoration: none !important;
            font-weight: 500 !important;
            transition: all 0.3s ease !important;
            border: 1px solid transparent !important;
            cursor: pointer !important;
        }

        .nav-button-primary {
            background-color: #409eff !important;
            color: white !important;
        }

        .nav-button-primary:hover {
            background-color: #66b1ff !important;
            box-shadow: 0 2px 6px rgba(64, 158, 255, 0.3) !important;
        }

        .nav-button-secondary {
            background-color: #f4f4f5 !important;
            color: #606266 !important;
        }

        .nav-button-secondary:hover {
            background-color: #e9e9eb !important;
            border-color: #d9d9d9 !important;
        }

        .nav-button i {
            margin-right: 5px !important;
            font-size: 14px !important;
        }
		 .empty-state {
            text-align: center;
            padding: 3rem;
            color: var(--text-secondary);
        }

        .empty-state i {
            font-size: 3rem;
            margin-bottom: 1rem;
            opacity: 0.5;
        }

        .timestamp {
            color: var(--text-secondary);
            font-size: 0.9rem;
            text-align: right;
            margin-top: 1rem;
        }

        .search-criteria {
            background-color: #f0f2f5;
            border-radius: 4px;
            padding: 1rem;
            margin-top: 1rem;
        }

        .search-criteria h5 {
            margin-top: 0;
            color: var(--text-secondary);
        }

        .criteria-item {
            display: flex;
            margin-bottom: 0.5rem;
        }

        .criteria-label {
            font-weight: 500;
            width: 120px;
            color: var(--text-secondary);
        }

        .criteria-value {
            flex: 1;
            color: var(--text-primary);
        }
        
        .search-form {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
            align-items: center;
        }
        
        .search-input {
            flex: 1;
            padding: 10px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 14px;
        }
        
        .search-button {
            padding: 10px 20px;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
        }
        
        .search-button:hover {
            opacity: 0.9;
        }
        
        .clear-button {
            padding: 10px 20px;
            background-color: #f5f7fa;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
        }
        
        .clear-button:hover {
            background-color: #ebeef5;
        }
        
        
        @media (max-width: 768px) {
            .container {
                padding: 10px;
            }
            
            .steps {
                flex-direction: column;
                gap: 20px;
            }
            
            .step:not(:last-child):after {
                display: none;
            }
            
            .checkbox-group {
                grid-template-columns: 1fr;
            }
            
            /* 优化移动端期刊卡片显示 */
            .results {
                gap: 15px;
            }
            
            .journal-card {
                padding: 15px;
				margin-bottom: 15px;
            }
        }
        
        /* 针对小屏幕进一步优化 */
        @media (max-width: 480px) {
            .results {
                gap: 10px;
            }
            
            .journal-card {
                padding: 12px;
				margin-bottom: 10px;
            }
        }