:root{--bg-primary:#fafaf9;--bg-secondary:#fff;--bg-tertiary:#f5f5f4;--bg-hover:#f0efed;--text-primary:#1c1917;--text-secondary:#57534e;--text-tertiary:#a8a29e;--border-color:#e7e5e4;--border-light:#f5f5f4;--accent:#7c3aed;--accent-light:#ede9fe;--accent-dark:#6d28d9;--success:#059669;--success-light:#d1fae5;--warning:#d97706;--warning-light:#fef3c7;--danger:#dc2626;--danger-light:#fee2e2;--sidebar-width:240px;--header-height:60px;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 12px #00000014;--shadow-lg:0 8px 30px #0000001f;--transition:.2s ease}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,sans-serif;line-height:1.6}#root{min-height:100vh}.app-layout{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border-color);z-index:100;flex-direction:column;transition:transform .3s;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar-header{border-bottom:1px solid var(--border-color);padding:20px}.sidebar-logo{color:var(--accent);align-items:center;gap:10px;font-size:18px;font-weight:700;display:flex}.sidebar-logo svg{width:28px;height:28px}.sidebar-nav{flex:1;padding:12px;overflow-y:auto}.nav-item{border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all var(--transition);text-align:left;background:0 0;border:none;align-items:center;gap:10px;width:100%;margin-bottom:2px;padding:10px 14px;font-size:14px;font-weight:500;text-decoration:none;display:flex}.nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-item.active{background:var(--accent-light);color:var(--accent)}.nav-item svg{flex-shrink:0;width:18px;height:18px}.main-content{margin-left:var(--sidebar-width);flex:1;min-height:100vh}.page-header{border-bottom:1px solid var(--border-color);background:var(--bg-secondary);padding:24px 32px}.page-title{color:var(--text-primary);font-size:24px;font-weight:700}.page-subtitle{color:var(--text-tertiary);margin-top:4px;font-size:14px}.page-body{padding:24px 32px}.card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);transition:box-shadow var(--transition);padding:20px}.card:hover{box-shadow:var(--shadow-md)}.card-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.card-title{font-size:16px;font-weight:600}.btn{border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);background:0 0;border:1px solid #0000;align-items:center;gap:6px;padding:8px 16px;font-family:inherit;font-size:14px;font-weight:500;display:inline-flex}.btn svg{width:16px;height:16px}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{background:var(--accent-dark)}.btn-secondary{background:var(--bg-secondary);color:var(--text-secondary);border-color:var(--border-color)}.btn-secondary:hover{background:var(--bg-hover);color:var(--text-primary)}.btn-danger{background:var(--danger-light);color:var(--danger);border-color:var(--danger)}.btn-sm{padding:5px 10px;font-size:12px}.btn-sm svg{width:14px;height:14px}.btn-lg{padding:12px 24px;font-size:16px}.form-group{margin-bottom:16px}.form-label{color:var(--text-secondary);margin-bottom:6px;font-size:13px;font-weight:600;display:block}.form-input,.form-textarea,.form-select{border:1px solid var(--border-color);border-radius:var(--radius-md);width:100%;color:var(--text-primary);background:var(--bg-secondary);transition:border-color var(--transition), box-shadow var(--transition);outline:none;padding:10px 14px;font-family:inherit;font-size:14px}.form-input:focus,.form-textarea:focus,.form-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.form-textarea{resize:vertical;min-height:120px;line-height:1.7}.tag{background:var(--bg-tertiary);color:var(--text-secondary);border-radius:20px;align-items:center;margin-bottom:6px;margin-right:6px;padding:3px 10px;font-size:12px;font-weight:500;display:inline-flex}.tag-accent{background:var(--accent-light);color:var(--accent)}.grid{gap:16px;display:grid}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.empty-state{text-align:center;color:var(--text-tertiary);flex-direction:column;justify-content:center;align-items:center;padding:60px 20px;display:flex}.empty-state svg{opacity:.5;width:48px;height:48px;margin-bottom:16px}.empty-state p{font-size:14px}.mobile-header{height:var(--header-height);background:var(--bg-secondary);border-bottom:1px solid var(--border-color);z-index:90;align-items:center;padding:0 16px;display:none;position:fixed;top:0;left:0;right:0}.mobile-menu-btn{cursor:pointer;border-radius:var(--radius-md);width:40px;height:40px;color:var(--text-primary);background:0 0;border:none;justify-content:center;align-items:center;display:flex}.mobile-menu-btn:hover{background:var(--bg-hover)}.sidebar-overlay{z-index:99;background:#0000004d;display:none;position:fixed;inset:0}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}.toast{background:var(--text-primary);color:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:1000;padding:12px 20px;font-size:14px;animation:.3s toastIn;position:fixed;bottom:24px;right:24px}@keyframes toastIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (width<=768px){.mobile-header{display:flex}.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-overlay.show{display:block}.main-content{padding-top:var(--header-height);margin-left:0}.page-header,.page-body{padding:16px 20px}.grid-2,.grid-3{grid-template-columns:1fr}.page-title{font-size:20px}}@media (width>=769px) and (width<=1024px){.grid-3{grid-template-columns:repeat(2,1fr)}}.content-render h1{margin:20px 0 12px;font-size:24px}.content-render h2{margin:16px 0 10px;font-size:20px}.content-render h3{margin:14px 0 8px;font-size:17px}.content-render p{margin-bottom:12px}.content-render hr{border:none;border-top:1px solid var(--border-color);margin:20px 0}.content-render blockquote{border-left:3px solid var(--accent);color:var(--text-secondary);margin:16px 0;padding-left:16px;font-style:italic}.content-render strong{font-weight:600}.spinner{border:2px solid var(--border-color);border-top-color:var(--accent);border-radius:50%;width:20px;height:20px;animation:.6s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}