:root{--bg:#f6f7f9;--panel:#fff;--border:#e3e6ea;--text:#1f2328;--text-dim:#6b7280;--brand:#1f6feb;--brand-dim:#e8f0fe;--danger:#d1242f;--shadow:0 1px 2px #1018280f, 0 8px 24px #1018280f;--radius:10px}@media (prefers-color-scheme:dark){:root{--bg:#16181d;--panel:#1e2027;--border:#2c3038;--text:#e6e8eb;--text-dim:#9aa2ad;--brand:#4c8ef7;--brand-dim:#1d2b45;--danger:#f0616c;--shadow:0 1px 2px #0000004d, 0 8px 24px #00000059}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Roboto,Helvetica,Arial,sans-serif}button{font:inherit;cursor:pointer;border:1px solid var(--border);background:var(--panel);color:var(--text);border-radius:8px;padding:7px 14px;transition:background .15s,border-color .15s,opacity .15s}button:hover:not(:disabled){border-color:var(--brand);color:var(--brand)}button:disabled{opacity:.45;cursor:not-allowed}button.primary{background:var(--brand);border-color:var(--brand);color:#fff}button.primary:hover:not(:disabled){filter:brightness(1.08);color:#fff}button.ghost{background:0 0;border-color:#0000}button.danger:hover:not(:disabled){border-color:var(--danger);color:var(--danger)}input[type=text]{font:inherit;border:1px solid var(--border);background:var(--panel);color:var(--text);border-radius:8px;outline:none;padding:8px 12px}input[type=text]:focus{border-color:var(--brand)}.home{max-width:1180px;margin:0 auto;padding:32px 24px 80px}.home-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:6px;display:flex}.home-title{letter-spacing:-.02em;margin:0;font-size:26px;font-weight:650}.home-sub{color:var(--text-dim);margin:6px 0 24px;font-size:13px}.toolbar{flex-wrap:wrap;gap:8px;display:flex}.grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;display:grid}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);cursor:pointer;flex-direction:column;gap:10px;padding:16px;transition:border-color .15s,transform .15s;display:flex}.card:hover{border-color:var(--brand);transform:translateY(-1px)}.card-icon{background:var(--brand-dim);width:34px;height:34px;color:var(--brand);border-radius:8px;place-items:center;font-size:17px;font-weight:700;display:grid}.card-name{word-break:break-all;font-size:15px;font-weight:600;line-height:1.35}.card-meta{color:var(--text-dim);font-size:12px}.card-actions{opacity:0;gap:6px;margin-top:auto;transition:opacity .15s;display:flex}.card:hover .card-actions,.card:focus-within .card-actions{opacity:1}.card-actions button{padding:4px 9px;font-size:12px}.empty{text-align:center;border:1.5px dashed var(--border);border-radius:var(--radius);color:var(--text-dim);padding:72px 24px}.empty h3{color:var(--text);margin:0 0 8px;font-size:17px}.editor{flex-direction:column;height:100%;display:flex}.topbar{background:var(--panel);border-bottom:1px solid var(--border);flex:0 0 52px;align-items:center;gap:10px;height:52px;padding:0 14px;display:flex}.topbar .name{color:var(--text);background:0 0;border:1px solid #0000;border-radius:6px;outline:none;min-width:120px;max-width:40vw;padding:4px 8px;font-size:15px;font-weight:600}.topbar .name:hover,.topbar .name:focus{border-color:var(--border);background:var(--bg)}.topbar .spacer{flex:1}.status{color:var(--text-dim);white-space:nowrap;align-items:center;gap:6px;font-size:12px;display:flex}.status .dot{background:#22c55e;border-radius:50%;width:7px;height:7px}.status .dot.saving{background:#f59e0b}.status .dot.error{background:var(--danger)}.canvas-host{flex:1;min-height:0;position:relative}.canvas-host>div{height:100%}.loading{background:var(--bg);color:var(--text-dim);z-index:10;place-items:center;font-size:14px;display:grid;position:absolute;inset:0}.import-tip{color:#fff;z-index:20;background:#00000059;place-items:center;font-size:14px;display:grid;position:absolute;inset:0}@media (max-width:640px){.home{padding:20px 14px 60px}.grid{grid-template-columns:1fr}.card-actions{opacity:1}.topbar .name{max-width:45vw;font-size:14px}.topbar button{padding:6px 10px;font-size:13px}}.auth-wrap{place-items:center;min-height:100%;padding:24px;display:grid}.auth-card{background:var(--panel);border:1px solid var(--border);width:100%;max-width:420px;box-shadow:var(--shadow);border-radius:14px;flex-direction:column;gap:16px;padding:28px;display:flex}.auth-brand{align-items:center;gap:14px;display:flex}.auth-logo{background:var(--brand-dim);width:44px;height:44px;color:var(--brand);border-radius:10px;place-items:center;font-size:22px;font-weight:700;display:grid}.auth-brand h1{margin:0;font-size:21px}.auth-brand p{color:var(--text-dim);margin:3px 0 0;font-size:12px;line-height:1.5}.auth-tabs{border-bottom:1px solid var(--border);gap:6px;padding-bottom:8px;display:flex}.auth-tabs button{background:0 0;border:0;border-radius:6px;flex:1}.auth-tabs button.active{background:var(--brand-dim);color:var(--brand);font-weight:600}.field{flex-direction:column;gap:6px;font-size:13px;display:flex}.field span{color:var(--text-dim)}.field input{font:inherit;border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:8px;outline:none;padding:9px 12px}.field input:focus{border-color:var(--brand)}.auth-error{color:var(--danger);background:#d1242f1a;border-radius:8px;padding:9px 12px;font-size:13px}.auth-submit{width:100%;padding:10px}.auth-hint{color:var(--text-dim);text-align:center;margin:0;font-size:11px;line-height:1.6}.banner-error,.readonly-banner{text-align:center;padding:9px 16px;font-size:13px}.banner-error{color:var(--danger);cursor:pointer;background:#d1242f1f}.readonly-banner{background:var(--brand-dim);color:var(--brand);flex:none}.live{color:#16a34a}.presence{color:var(--text-dim);white-space:nowrap;align-items:center;gap:5px;font-size:12px;display:flex}.presence-dot{background:#16a34a;border-radius:50%;width:7px;height:7px}.toast{background:var(--danger);color:#fff;z-index:99;cursor:pointer;border-radius:8px;max-width:90vw;padding:10px 18px;font-size:13px;position:fixed;bottom:20px;left:50%;transform:translate(-50%)}.modal-backdrop{z-index:120;background:#00000073;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.modal{background:var(--panel);width:100%;max-width:460px;box-shadow:var(--shadow);border-radius:12px;padding:22px}.modal h3{margin:0 0 10px;font-size:17px}.modal p{color:var(--text-dim);margin:0 0 18px;font-size:13px;line-height:1.7}.modal-actions{flex-wrap:wrap;gap:8px;display:flex}.side-panel{background:var(--panel);border-left:1px solid var(--border);z-index:50;flex-direction:column;width:340px;max-width:90vw;display:flex;position:absolute;top:52px;bottom:0;right:0;box-shadow:-8px 0 24px #00000014}.side-head{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.side-head h3{margin:0;font-size:15px}.side-body{flex:1;padding:14px 16px;font-size:13px;overflow:auto}.rev-list,.share-list{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.rev-list li,.share-list li{border:1px solid var(--border);border-radius:8px;flex-direction:column;gap:6px;padding:10px;display:flex}.rev-meta{color:var(--text-dim);font-size:11px}.rev-list button,.share-actions button{align-self:flex-start;padding:4px 10px;font-size:12px}.share-create{flex-wrap:wrap;gap:8px;margin-bottom:14px;display:flex}.share-create button{white-space:nowrap;flex:1;font-size:12px}.share-perm{color:var(--brand);font-size:12px;font-weight:600}.share-list input{border:1px solid var(--border);background:var(--bg);width:100%;color:var(--text);border-radius:6px;padding:6px 8px;font-size:11px}.share-actions{gap:6px;display:flex}.side-hint{color:var(--text-dim);margin-top:16px;font-size:11px;line-height:1.6}@media (max-width:640px){.side-panel{width:100%;top:52px}.presence{display:none}}.toast-ok{color:#fff;cursor:pointer;background:#16a34a}.auth-divider{color:var(--text-dim);align-items:center;gap:10px;margin:2px 0;font-size:12px;display:flex}.auth-divider:before,.auth-divider:after{content:"";background:var(--border);flex:1;height:1px}.auth-skip{border:1px solid var(--border);width:100%;color:var(--text);background:0 0;padding:10px}.auth-skip:hover{border-color:var(--brand);color:var(--brand)}.space-tag{vertical-align:middle;border-radius:10px;margin-left:8px;padding:1px 7px;font-size:11px;font-weight:500;display:inline-block}.space-public{color:var(--brand);background:#1f6feb1f}.space-personal{color:#16a34a;background:#16a34a1f}