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6px;border-radius:4px}.header-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.preset-select{padding:8px 12px;border:1px solid var(--border-color, #ddd);border-radius:6px;background-color:var(--bg-card, white);color:var(--text-main, #333);font-size:14px;cursor:pointer;outline:none}.preset-select option{color:var(--text-main, #333);background:var(--bg-card, white)}.btn{padding:8px 14px;border:none;border-radius:6px;cursor:pointer;font-size:13px;font-weight:500;transition:all .2s ease;white-space:nowrap;display:inline-flex;align-items:center;justify-content:center}.btn-primary{background:var(--primary-color, #0165fc);color:#fff;border:1px solid transparent}.btn-primary:hover{opacity:.9;transform:translateY(-1px)}.btn-secondary{background:var(--bg-card, white);color:var(--primary-color, #667eea);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--bg-subtle, #f8f9fa);box-shadow:0 2px 5px #0000001a;transform:translateY(-1px)}.btn-success{background:#48bb78;color:#fff}.btn-success:hover{background:#38a169}.btn-icon{width:36px;height:36px;padding:0;border-radius:5px;background:transparent;color:var(--text-muted, #666);font-size:16px;display:flex;align-items:center;justify-content:center;border:1px solid transparent}.btn-icon:hover{background:var(--bg-subtle, #f0f0f0);color:var(--text-main, #333)}.app-content{display:flex;flex:1;overflow:hidden;height:auto;min-height:0}.preview-section{width:60%;padding:30px;overflow-y:auto;background:var(--bg-subtle, #fafafa);border-right:1px solid var(--border-color, #e0e0e0)}.preview-container{max-width:800px;margin:0 auto;background:#fff;color:#000;padding:40px;box-shadow:0 2px 8px #0000001a;border-radius:8px}#preview>*{margin-bottom:12pt}.settings-section{width:40%;padding:20px;overflow-y:auto;background:var(--bg-card, white)}.settings-container{max-width:500px}.style-group{margin-bottom:20px;border:1px solid var(--border-color, #e0e0e0);border-radius:8px;overflow:hidden}.style-group-header{background:var(--bg-subtle, #f8f9fa);color:var(--text-main, #333);border-bottom:1px solid var(--border-color, #eee);padding:12px 16px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;-webkit-user-select:none;user-select:none}.style-group-header:hover{opacity:.9}.style-group-toggle{font-size:18px;transition:transform .3s ease}.style-group.collapsed .style-group-toggle{transform:rotate(-90deg)}.style-group-body{padding:16px;background:var(--bg-card, #fafafa);display:block}.style-group.collapsed .style-group-body{display:none}.style-item{background:var(--bg-card, white);border:1px solid var(--border-color, #e0e0e0);border-radius:6px;margin-bottom:12px;overflow:hidden}.style-item-header{background:var(--bg-subtle, #f5f5f5);padding:10px 14px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:500;-webkit-user-select:none;user-select:none;color:var(--text-main)}.style-item-header:hover{background:var(--border-color)}.style-item-toggle{font-size:14px;transition:transform .3s ease}.style-item.collapsed .style-item-toggle{transform:rotate(-90deg)}.style-item-body{padding:14px;display:block}.style-item.collapsed .style-item-body{display:none}.form-group{margin-bottom:12px}.form-group label{display:block;font-size:13px;font-weight:500;color:var(--text-main, #333);margin-bottom:6px}.form-group input[type=text],.form-group input[type=number],.form-group select{width:100%;padding:8px 12px;border:1px solid var(--border-color, #ddd);border-radius:4px;font-size:14px;transition:border-color .3s ease;background:var(--bg-input, var(--bg-card));color:var(--text-main)}.form-group input[type=text]:focus,.form-group input[type=number]:focus,.form-group select:focus{outline:none;border-color:var(--primary-color, #667eea)}.form-group input[type=range]{width:100%;margin-top:4px}.form-group input[type=color]{width:60px;height:36px;border:1px solid var(--border-color, #ddd);border-radius:4px;cursor:pointer;background:var(--bg-card)}.form-group input[type=checkbox]{margin-right:8px;cursor:pointer}.range-group{display:flex;align-items:center;gap:12px}.range-group input[type=range]{flex:1}.range-value{min-width:60px;text-align:right;font-weight:600;color:var(--primary-color, #667eea)}.color-group{display:flex;align-items:center;gap:12px}.color-group input[type=color]{flex-shrink:0}.color-group input[type=text]{flex:1}.preview-section::-webkit-scrollbar,.settings-section::-webkit-scrollbar{width:8px}.preview-section::-webkit-scrollbar-track,.settings-section::-webkit-scrollbar-track{background:var(--bg-subtle, #f1f1f1)}.preview-section::-webkit-scrollbar-thumb,.settings-section::-webkit-scrollbar-thumb{background:var(--text-muted, #888);border-radius:4px}.preview-section::-webkit-scrollbar-thumb:hover,.settings-section::-webkit-scrollbar-thumb:hover{background:var(--text-main, #555)}.sample-table{width:100%;border-collapse:collapse;margin:16pt 0}.toc-container{margin:20pt 0;padding:16pt;background:#fafafa;border:1px solid #e0e0e0;border-radius:4px;color:#000}.toc-title{font-weight:700;font-size:16pt;margin-bottom:12pt;text-align:center}@media (max-width: 1200px){.app-content{flex-direction:column;height:auto}.preview-section,.settings-section{width:100%;border-right:none;border-bottom:1px solid var(--border-color, #e0e0e0)}.preview-section{max-height:500px}}.toast-container{position:fixed;top:80px;right:20px;z-index:9999}.toast{background:var(--bg-card, white);color:var(--text-main, #333);padding:12px 20px;border-radius:8px;margin-bottom:10px;box-shadow:0 4px 12px #00000026;display:flex;align-items:center;animation:slideIn .3s ease;min-width:250px;border-left:4px solid var(--primary-color, 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