:root {
   --primary-color: #3498db;
   --secondary-color: #2980b9;
   --success-color: #2ecc71;
   --warning-color: #f39c12;
   --danger-color: #e74c3c;
   --light-bg: #ffffff;
   --dark-bg: #2c3e50;
   --background-color: #f1f2f3;
   --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
   --border-radius: 10px;
   --tab-active: #3498db;
   --tab-inactive: #e0e0e0;
   --text-color: #333;
   --light-text: #666;
   --border-color: #e0e0e0;
 }

 * {
   margin: 0;
   padding: 0;
 }

 body {
   background-color: var(--background-color);
 }

 .container {
   width: 100%;
   max-width: 1500px;
   min-width: 1240px;
   margin: 20px auto;
   box-sizing: border-box;
   color: var(--text-color);
 }

 .container * {
   box-sizing: border-box;
 }

 header {
   text-align: center;
   padding: 10px 0;
   margin-bottom: 20px;
   position: relative;
   overflow: hidden;
 }

 h1 {
   font-size: 2.4rem;
   margin-bottom: 10px;
   color: var(--dark-bg);
   display: flex;
   align-items: center;
   justify-content: center;
   gap: 15px;
 }

 .subtitle {
   font-size: 1.1rem;
   color: var(--light-text);
   max-width: 95%;
   margin: 0 auto;
   line-height: 1.7;
 }

 .main-content {
   display: flex;
   gap: 30px;
   margin-bottom: 30px;
 }

 .config-panel {
   flex: 1;
   background: var(--light-bg);
   border-radius: var(--border-radius);
   padding: 25px;
   box-shadow: var(--card-shadow);
 }

 .result-panel {
   flex: 1;
   background: var(--light-bg);
   border-radius: var(--border-radius);
   padding: 25px;
   box-shadow: var(--card-shadow);
   display: flex;
   flex-direction: column;
 }

 .panel-title {
   display: flex;
   align-items: center;
   gap: 10px;
   margin-bottom: 25px;
   padding-bottom: 15px;
   border-bottom: 2px solid #f0f0f0;
   color: var(--dark-bg);
   font-size: 1.4rem;
   font-weight: 700;
 }

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

 .form-group h3 {
   margin-bottom: 15px;
   color: var(--dark-bg);
   display: flex;
   align-items: center;
   gap: 8px;
   font-size: 1.2rem;
 }

 .input-row {
   display: flex;
   gap: 15px;
   margin-bottom: 15px;
   align-items: center;
 }

 .input-row label {
   min-width: 120px;
   font-weight: 500;
   color: #555;
 }

.container input,.container select,  button {
   padding: 12px 15px;
   border: 1px solid var(--border-color);
   border-radius: 6px;
   font-size: 1rem;
   background: #fff;
   transition: all 0.3s ease;
 }

 .container select{
   width: 185px;
 }


 .container input:focus,
 .container select:focus {
   border-color: var(--primary-color);
   box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
   outline: none;
 }

 .container input[type="number"] {
   width: 165px;
 }

 .container input[type="text"] {
   flex: 1;
 }

 button {
   background: var(--primary-color);
   color: white;
   border: none;
   cursor: pointer;
   font-weight: 600;
   transition: all 0.3s ease;
   display: flex;
   align-items: center;
   justify-content: center;
   gap: 8px;
 }

 button:hover {
   background: var(--secondary-color);
   transform: translateY(-2px);
   box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
 }

 .container .generate-btn {
   background: var(--success-color);
   padding: 15px 30px;
   font-size: 1.1rem;
   width: 100%;
   margin-top: 20px;
   border-radius: 8px;
 }

 .container .generate-btn:hover {
   background: #27ae60;
 }

 .checkbox-group {
   display: flex;
   flex-wrap: wrap;
   gap: 15px;
   margin-top: 10px;
 }

 .checkbox-item {
   display: flex;
   align-items: center;
   gap: 8px;
   background: #f8f9fa;
   padding: 8px 12px;
   border-radius: 6px;
   border: 1px solid #eee;
 }

 .result-container {
   flex: 1;
   display: flex;
   flex-direction: column;
   margin-top: 10px;
 }

 textarea {
   flex: 1;
   padding: 20px;
   border: 1px solid var(--border-color);
   border-radius: var(--border-radius);
   font-family: 'Courier New', monospace;
   font-size: 1rem;
   resize: none;
   margin-bottom: 20px;
   background: #fcfcfc;
   line-height: 1.8;
 }

 .action-buttons {
   display: flex;
   gap: 15px;
 }

 .action-btn {
   flex: 1;
   padding: 14px;
   display: flex;
   justify-content: center;
   align-items: center;
   gap: 8px;
   border-radius: 8px;
   font-size: 1.05rem;
 }

 .copy-btn {
   background: var(--primary-color);
 }

 .download-btn {
   background: var(--warning-color);
 }

 .download-btn:hover {
   background: #e67e22;
 }

 .clear-btn {
   background: var(--danger-color);
 }

 .clear-btn:hover {
   background: #c0392b;
 }

 .rules-container {
   display: flex;
   flex-direction: column;
   gap: 15px;
   margin-top: 15px;
   padding: 20px;
   background: #f8f9fa;
   border-radius: var(--border-radius);
   border: 1px solid #eee;
 }

 .rule-item {
   padding: 10px 15px;
   border-left: 3px solid var(--primary-color);
   background: white;
   border-radius: 0 var(--border-radius) var(--border-radius) 0;
   box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
 }

 footer {
   text-align: center;
   padding: 15px;
   color: var(--light-text);
   font-size: 0.95rem;
 }

 .card-examples {
   display: grid;
   grid-template-columns: repeat(3, 1fr);
   gap: 15px;
   margin-top: 15px;
 }

 .card-example {
   padding: 15px;
   background: white;
   border-radius: var(--border-radius);
   font-family: monospace;
   font-size: 0.95rem;
   border: 1px solid #eee;
   box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
 }

 /* Tab样式 */
 .tab-container {
   margin-bottom: 25px;
   border: 1px solid var(--border-color);
   border-radius: var(--border-radius);
   overflow: hidden;
   box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
 }

 .tab-header {
   display: flex;
   background-color: #f8f9fa;
   border-bottom: 1px solid var(--border-color);
 }

 .tab-btn {
   flex: 1;
   padding: 16px 15px;
   border: none;
   background: none;
   cursor: pointer;
   font-weight: 600;
   color: var(--light-text);
   transition: all 0.3s ease;
   display: flex;
   align-items: center;
   justify-content: center;
   gap: 10px;
   font-size: 1.05rem;
   border-bottom: 3px solid transparent;
 }

 .tab-btn:hover {
   background: rgba(255, 255, 255, 0.7);
   color: var(--primary-color);
 }

 .tab-btn.active {
   background: white;
   color: var(--primary-color);
   border-bottom: 3px solid var(--primary-color);
 }

 .tab-content {
   padding: 25px;
   background-color: white;
 }

 .tab-pane {
   display: none;
 }

 .tab-pane.active {
   display: block;
 }

 .tab-content .form-group {
   margin-bottom: 20px;
 }

 .tab-content .input-row {
   margin-bottom: 15px;
 }

 /* 使用说明部分 */
 .instructions {
   background: var(--light-bg);
   border-radius: var(--border-radius);
   padding: 30px;
   box-shadow: var(--card-shadow);
   margin-bottom: 30px;
 }

 .instructions h2 {
   margin-bottom: 25px;
   color: var(--dark-bg);
   display: flex;
   align-items: center;
   gap: 12px;
   font-size: 1.4rem;
 }

 .instruction-list {
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
   gap: 25px;
 }

 .instruction-item {
   background: #f8f9fa;
   padding: 25px;
   border-radius: var(--border-radius);
   border-left: 4px solid var(--primary-color);
   box-shadow: 0 3px 6px rgba(0, 0, 0, 0.03);
   transition: transform 0.3s ease;
 }

 .instruction-item:hover {
   transform: translateY(-5px);
   box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
 }

 .instruction-item h3 {
   margin-bottom: 15px;
   display: flex;
   align-items: center;
   gap: 10px;
   color: var(--dark-bg);
   font-size: 1.25rem;
 }

 .instruction-item p {
   line-height: 1.7;
   color: var(--light-text);
 }

 /* 响应式调整 */
 @media (max-width: 1400px) {
   .main-content {
     flex-direction: column;
   }

   .card-examples {
     grid-template-columns: repeat(2, 1fr);
   }
 }

 .info-badge {
   background: #e3f2fd;
   color: #1976d2;
   padding: 3px 8px;
   border-radius: 4px;
   font-size: 0.85rem;
   font-weight: 600;
   margin-left: 10px;
 }