:root{--fg: #1a1a1a;--bg: #ffffff;--muted: #667085;--border: #e5e7eb;--accent: #2563eb;--danger: #dc2626;--panel: #f9fafb}:root[data-theme=dark]{--fg: #e5e7eb;--bg: #0b1020;--muted: #9ca3af;--border: #1f2937;--accent: #3b82f6;--danger: #f87171;--panel: #111827}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{font-family:-apple-system,system-ui,Segoe UI,Roboto,sans-serif;font-size:14px;color:var(--fg);background:var(--bg)}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit;color:inherit;background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:6px 10px}button{cursor:pointer}button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}button.primary:hover{filter:brightness(1.05)}button.danger{color:var(--danger);border-color:var(--danger)}button.ghost{background:transparent;border-color:transparent}button.ghost:hover{background:var(--panel)}.layout{display:grid;grid-template-columns:280px 1fr;height:100vh}.sidebar{background:var(--panel);border-right:1px solid var(--border);overflow-y:auto;padding:12px}.main{overflow-y:auto;padding:18px 24px}.tree ul{list-style:none;padding-left:14px;margin:4px 0}.tree li{padding:2px 0}.tree .node{cursor:pointer;padding:2px 4px;border-radius:4px}.tree .node:hover{background:var(--bg)}.tree .node.active{background:var(--accent);color:#fff}.bookmark-list{display:flex;flex-direction:column;gap:4px}.bookmark-row{display:grid;grid-template-columns:16px 1fr auto auto;gap:10px;align-items:center;padding:8px 10px;border:1px solid var(--border);border-radius:6px;background:var(--bg)}.bookmark-row .title{font-weight:500}.bookmark-row .url{color:var(--muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.bookmark-row .tags{color:var(--muted);font-size:12px}.bookmark-row .count{color:var(--muted);font-size:12px;min-width:30px;text-align:right}.card{border:1px solid var(--border);border-radius:8px;padding:16px;background:var(--bg);margin-bottom:16px}.login{max-width:360px;margin:10vh auto;padding:24px;border:1px solid var(--border);border-radius:10px;background:var(--panel)}.login label{display:block;margin-top:10px;font-size:12px;color:var(--muted)}.login input{width:100%;margin-top:4px}.login .err{color:var(--danger);margin-top:10px;font-size:13px}.row{display:flex;gap:8px;align-items:center}.spacer{flex:1}.muted{color:var(--muted)}.mt8{margin-top:8px}.mt16{margin-top:16px}