:root{--bg: #f6f7f9;--card: #ffffff;--border: #e2e5ea;--text: #1c1f24;--muted: #6b7280;--primary: #2f6df6;--danger: #d9534f;--radius: 10px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:15px}a{color:var(--primary);text-decoration:none}.page{max-width:900px;margin:0 auto;padding:20px 16px 60px}input,textarea,select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--card);color:var(--text);font-family:inherit;font-size:15px}input:focus,textarea:focus{outline:none;border-color:var(--primary)}button{padding:10px 16px;border:none;border-radius:var(--radius);background:var(--primary);color:#fff;font-size:15px;font-family:inherit;cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}.btn-plain{background:var(--card);color:var(--text);border:1px solid var(--border)}.btn-danger{background:var(--danger)}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px}@media(max-width:768px){.page{padding:16px 12px 40px}}.nav{background:var(--card);border-bottom:1px solid var(--border)}.nav-inner{max-width:900px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}.brand{font-weight:600;font-size:17px;color:var(--text)}.nav-links{display:flex;align-items:center;gap:12px}.form-card{max-width:380px;margin:40px auto}.form-card h2{margin:0 0 16px}.form-card label{display:block;margin:12px 0 6px;font-size:14px;color:var(--muted)}.form-card button[type=submit]{width:100%;margin-top:16px}.muted{color:var(--muted);font-size:14px}.error{margin:12px 0 0;padding:10px 12px;border-radius:var(--radius);background:#fdecec;border:1px solid #f5c2c0;color:var(--danger);font-size:14px}.toolbar{display:flex;gap:10px;align-items:center;margin-bottom:14px}.toolbar .search{flex:1}.toolbar button{white-space:nowrap}.note-list{display:grid;gap:12px}.note-card{display:grid;gap:8px}.note-head{display:flex;align-items:center;gap:8px}.note-title{font-weight:600;font-size:16px;color:var(--text)}.note-body{margin:0;color:var(--muted);white-space:pre-wrap}.note-link{font-size:14px;word-break:break-all}.note-actions{display:flex;gap:10px;align-items:center}.btn-small{padding:6px 10px;font-size:14px}.btn-link{font-size:14px}.badge{font-size:12px;padding:2px 8px;border-radius:999px;background:#e8f0ff;color:var(--primary)}.tag-row{display:flex;flex-wrap:wrap;gap:6px}.filter-row{margin-bottom:14px}.tag{display:inline-flex;align-items:center;gap:4px;font-size:13px;padding:3px 10px;border-radius:999px;background:var(--bg);border:1px solid var(--border);color:var(--muted)}.tag-button{cursor:pointer}.tag-active{background:var(--primary);border-color:var(--primary);color:#fff}.tag-x{background:none;border:none;padding:0 2px;color:var(--muted);cursor:pointer;font-size:13px}.editor-actions{display:flex;gap:10px;margin-top:16px}.card h2{margin:0 0 16px}.card label{display:block;margin:12px 0 6px;font-size:14px;color:var(--muted)}.embed{margin:12px 0}.embed iframe{max-width:100%;border:0;border-radius:var(--radius)}.share-box{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}.read-only{margin-bottom:0;padding-top:12px;border-top:1px solid var(--border)}.answer-card{margin-top:12px}.answer{line-height:1.55}.answer>:first-child{margin-top:0}.answer>:last-child{margin-bottom:0}.answer ul,.answer ol{padding-left:20px}.answer li{margin:4px 0}.answer code{padding:1px 5px;border-radius:5px;background:var(--bg);border:1px solid var(--border);font-size:13px}.answer pre{padding:12px;border-radius:var(--radius);background:var(--bg);border:1px solid var(--border);overflow-x:auto}.answer pre code{padding:0;border:none;background:none}.answer blockquote{margin:8px 0;padding-left:12px;border-left:3px solid var(--border);color:var(--muted)}.answer a{word-break:break-all}.sources{margin-top:16px;padding-top:12px;border-top:1px solid var(--border)}.sources .muted{margin:0 0 8px}.sources .tag{color:var(--primary)}@media(max-width:600px){body{font-size:16px}.nav-inner{padding:10px 12px}.nav-links{gap:10px;font-size:14px}.nav-links .muted{display:none}.toolbar{flex-wrap:wrap}.toolbar .search{flex:1 1 100%}.toolbar button{width:100%}.form-card{margin:20px auto}.editor-actions button,.share-box button{flex:1}.share-box{align-items:flex-start}.embed iframe,.embed blockquote{max-width:100%!important}.note-actions{justify-content:flex-start}}