:root{--primary-color: #165DFF;--primary-hover: #0E42D2;--primary-light: #E8F3FF;--accent-color: #FF7D00;--accent-light: #FFF7E8;--success-color: #00B42A;--error-color: #F53F3F;--text-primary: #1D2129;--text-secondary: #4E5969;--text-tertiary: #86909C;--border-color: #E5E6EB;--bg-light: #F7F8FA;--bg-white: #FFFFFF;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 2px 8px rgba(0, 0, 0, .06);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:14px;line-height:1.6;color:var(--text-primary);background:var(--bg-light);-webkit-font-smoothing:antialiased}.app-container{min-height:100vh;display:flex;flex-direction:column}.header{background:linear-gradient(135deg,var(--primary-color) 0%,#4080FF 100%);padding:32px 24px;text-align:center}.header-inner{max-width:800px;margin:0 auto}.header-title{font-size:36px;font-weight:700;color:#fff;margin-bottom:12px;letter-spacing:1px}.header-desc{font-size:18px;color:#fffffff2;line-height:1.7}.main-content{flex:1;display:flex;gap:var(--spacing-lg);max-width:1400px;width:100%;margin:0 auto;padding:var(--spacing-lg) 24px}.input-section{width:360px;flex-shrink:0;display:flex;flex-direction:column;gap:var(--spacing-md)}.theme-form{background:var(--bg-white);border-radius:var(--radius-lg);padding:var(--spacing-lg)}.form-group{margin-bottom:var(--spacing-lg)}.form-group:last-of-type{margin-bottom:0}.form-label{display:block;font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.required{color:var(--error-color);margin-left:2px}.input-wrapper{position:relative}.form-input{width:100%;height:44px;padding:0 36px 0 14px;font-size:14px;border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-white);transition:border-color .2s,box-shadow .2s}.form-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 2px var(--primary-light)}.form-input::-moz-placeholder{color:var(--text-tertiary)}.form-input::placeholder{color:var(--text-tertiary)}.clear-btn{position:absolute;right:8px;top:50%;transform:translateY(-50%);width:24px;height:24px;border:none;background:var(--bg-light);border-radius:50%;color:var(--text-tertiary);cursor:pointer;font-size:16px;display:none}.clear-btn:hover{background:var(--border-color);color:var(--text-secondary)}.input-footer{display:flex;justify-content:space-between;margin-top:var(--spacing-xs);min-height:18px}.error-msg{color:var(--error-color);font-size:12px}.char-count{color:var(--text-tertiary);font-size:12px}.radio-group{display:flex;gap:var(--spacing-sm)}.radio-group.vertical{flex-direction:column}.radio-item{display:flex;align-items:center;padding:10px 14px;border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:all .2s}.radio-item:hover{border-color:var(--primary-color);background:var(--primary-light)}.radio-item input[type=radio]{width:16px;height:16px;margin-right:8px;accent-color:var(--primary-color)}.radio-label{font-size:14px;color:var(--text-primary)}.button-group{display:flex;gap:var(--spacing-sm);margin-top:var(--spacing-lg)}.btn{height:44px;padding:0 20px;font-size:14px;font-weight:500;border-radius:var(--radius-md);cursor:pointer;transition:all .2s;border:none;display:flex;align-items:center;justify-content:center;gap:6px}.btn-primary{flex:1;background:var(--primary-color);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-primary:disabled{background:var(--border-color);color:var(--text-tertiary);cursor:not-allowed}.btn-outline{background:var(--bg-white);border:1px solid var(--border-color);color:var(--text-secondary)}.btn-outline:hover{border-color:var(--primary-color);color:var(--primary-color)}.btn-secondary{background:var(--accent-color);color:#fff;border:none;padding:0 32px}.btn-secondary:hover{background:#e67300}.model-section{background:var(--bg-white);border-radius:var(--radius-lg);padding:var(--spacing-lg)}.model-header{margin-bottom:var(--spacing-md)}.model-title{font-size:14px;font-weight:600;color:var(--text-primary)}.model-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-sm)}.model-card{position:relative;padding:12px;background:var(--bg-light);border:1px solid transparent;border-radius:var(--radius-md);text-align:left;cursor:pointer;transition:all .2s}.model-card:hover{background:var(--primary-light);border-color:var(--primary-color)}.model-badge{position:absolute;top:8px;right:8px;padding:2px 6px;background:var(--accent-color);color:#fff;font-size:10px;border-radius:var(--radius-sm)}.model-name{display:block;font-size:13px;font-weight:500;color:var(--text-primary);margin-bottom:4px}.model-desc{font-size:11px;color:var(--text-tertiary)}.result-section{flex:1;background:var(--bg-white);border-radius:var(--radius-lg);padding:var(--spacing-lg);display:flex;flex-direction:column}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-xl)}.empty-icon{color:var(--border-color);margin-bottom:var(--spacing-md)}.empty-text{font-size:14px;color:var(--text-tertiary);text-align:center;line-height:1.8;margin-bottom:var(--spacing-lg)}.empty-tips{display:flex;gap:var(--spacing-md)}.tip-item{padding:6px 12px;background:var(--bg-light);border-radius:20px;font-size:12px;color:var(--text-secondary)}.loading-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-xl)}.loading-spinner{width:40px;height:40px;border:3px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin .8s linear infinite;margin-bottom:var(--spacing-md)}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{font-size:14px;color:var(--text-secondary)}#resultArea{display:flex;flex-direction:column;flex:1}.result-list{flex:0 1 auto;overflow-y:auto}.result-item{display:flex;align-items:flex-start;gap:var(--spacing-md);padding:var(--spacing-md);border-bottom:1px solid var(--border-color);transition:background .2s}.result-item:last-child{border-bottom:none}.result-item:hover{background:var(--bg-light)}.result-number{width:28px;height:28px;border-radius:50%;background:var(--primary-color);color:#fff;font-size:14px;font-weight:600;display:flex;align-items:center;justify-content:center;flex-shrink:0}.result-content{flex:1;min-width:0}.result-title{font-size:18px;font-weight:500;color:var(--text-primary);line-height:1.7;margin-bottom:8px;word-break:break-word}.result-title .main-title{font-weight:600}.result-title .sub-title{display:block;margin-top:8px;font-size:16px;font-weight:400;color:var(--text-secondary)}.result-tag{display:inline-block;padding:2px 8px;background:var(--primary-light);color:var(--primary-color);font-size:12px;border-radius:var(--radius-sm)}.result-action{flex-shrink:0}.copy-btn{padding:6px 12px;background:var(--bg-light);border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:12px;color:var(--text-secondary);cursor:pointer;transition:all .2s}.copy-btn:hover{background:var(--primary-light);border-color:var(--primary-color);color:var(--primary-color)}.result-actions{padding-top:var(--spacing-md);border-top:1px solid var(--border-color);display:flex;justify-content:center}.error-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-xl)}.error-icon{width:48px;height:48px;border-radius:50%;background:#fde4e4;color:var(--error-color);font-size:24px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-bottom:var(--spacing-md)}.error-text{font-size:14px;color:var(--text-secondary);margin-bottom:var(--spacing-md)}.footer{padding:20px 24px;text-align:center;background:var(--bg-white);border-top:1px solid var(--border-color)}.footer p{font-size:12px;color:var(--text-tertiary)}.footer a{color:var(--primary-color);text-decoration:none}.footer a:hover{text-decoration:underline}.copy-toast{position:fixed;bottom:32px;left:50%;transform:translate(-50%) translateY(100px);padding:10px 20px;background:var(--text-primary);color:#fff;font-size:14px;border-radius:var(--radius-md);opacity:0;transition:all .3s;z-index:1000}.copy-toast.show{opacity:1;transform:translate(-50%) translateY(0)}.model-modal{position:fixed;inset:0;z-index:1000;display:none}.model-modal.show{display:flex;align-items:center;justify-content:center}.modal-overlay{position:absolute;inset:0;background:#00000080}.modal-container{position:relative;width:90%;max-width:480px;background:var(--bg-white);border-radius:var(--radius-lg);overflow:hidden}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md) var(--spacing-lg);border-bottom:1px solid var(--border-color)}.modal-title{font-size:18px;font-weight:600;color:var(--text-primary)}.modal-close{width:32px;height:32px;border:none;background:var(--bg-light);border-radius:50%;font-size:20px;color:var(--text-secondary);cursor:pointer}.modal-close:hover{background:var(--border-color)}.modal-body{padding:var(--spacing-lg);font-size:14px;color:var(--text-secondary);line-height:1.8}.modal-body h4{color:var(--text-primary);margin:16px 0 8px}.modal-body ul{padding-left:20px}.modal-body li{margin-bottom:6px}.modal-body .formula-structure{background:var(--bg-light);padding:12px 16px;border-radius:var(--radius-md);margin:12px 0;border-left:3px solid var(--primary-color)}.modal-body .formula-structure code{font-size:13px;color:var(--text-primary);line-height:1.6;font-family:inherit}.modal-body .example-box{padding:12px 16px;border-radius:var(--radius-md);margin:12px 0}.modal-body .example-box .label{font-size:12px;font-weight:600;margin-bottom:6px;display:block}.modal-body .example-box .content{font-size:14px;line-height:1.6}.modal-body .example-box.bad{background:#fde4e4;border-left:3px solid var(--error-color)}.modal-body .example-box.bad .label{color:var(--error-color)}.modal-body .example-box.good{background:var(--primary-light);border-left:3px solid var(--primary-color)}.modal-body .example-box.good .label{color:var(--primary-color)}.modal-body .example-box.good .content{color:var(--text-primary);font-weight:500}.modal-body p{margin-bottom:8px}.formula-tooltip{position:fixed;background:var(--bg-white);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:var(--spacing-md);box-shadow:var(--shadow-md);max-width:280px;z-index:100}.tooltip-title{font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.tooltip-desc{font-size:13px;color:var(--text-secondary);margin-bottom:var(--spacing-sm)}.tooltip-example{font-size:12px;color:var(--text-tertiary)}.tooltip-example strong{color:var(--text-secondary)}@media(max-width:1024px){.main-content{flex-direction:column}.input-section{width:100%}}@media(max-width:640px){.header{padding:24px 16px}.header-title{font-size:26px}.header-desc{font-size:15px}.main-content{padding:16px}.model-grid{grid-template-columns:1fr}.empty-tips{flex-direction:column}}