:root{--bg:#f4f5f7;--panel:#fff;--border:#dde1e6;--text:#1f2328;--muted:#6a737d;--accent:#2f7cf6;--accent-soft:#e6effe;--danger:#c9372c;--plan-bg:#fbfbfc;--plan-floor:#efe7da;--plan-wall:#3a3f45;--grid-minor:#0000000d;--grid-major:#0000001f;--label-bg:#ffffffe6;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px}@media (prefers-color-scheme:dark){:root{--bg:#15171a;--panel:#1d2024;--border:#2e3338;--text:#e6e8eb;--muted:#9aa3ad;--accent:#5b9bff;--accent-soft:#1f3150;--danger:#ff6b5e;--plan-bg:#181a1d;--plan-floor:#3a352d;--plan-wall:#c9ced4;--grid-minor:#ffffff0a;--grid-major:#ffffff1a;--label-bg:#1d2024e6;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}html,body{background:var(--bg);height:100%;margin:0}body{flex-direction:column;display:flex;overflow:hidden}[hidden]{display:none!important}button{font:inherit;color:var(--text);background:var(--panel);border:1px solid var(--border);cursor:pointer;border-radius:6px;padding:5px 11px}button:hover:not(:disabled){border-color:var(--accent)}button:disabled{opacity:.45;cursor:default}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.danger{color:var(--danger)}button.small{padding:3px 9px;font-size:12px}button.icon{background:0 0;border:none;padding:2px 6px;font-size:20px;line-height:1}button.wide{width:100%;margin-top:8px}input{font:inherit;color:var(--text)}input[type=number],input[type=search],.project-name{background:var(--bg);border:1px solid var(--border);border-radius:6px;width:100%;padding:5px 8px}input:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}.topbar{background:var(--panel);border-bottom:1px solid var(--border);align-items:center;gap:8px;padding:8px 14px;display:flex}.brand{letter-spacing:.2px;white-space:nowrap;margin-right:6px;font-weight:700}.project-name{background:0 0;border-color:#0000;max-width:260px;font-weight:600}.project-name:hover{border-color:var(--border)}.save-status{color:var(--muted);white-space:nowrap;font-size:12px}.spacer{flex:1}.sep{background:var(--border);width:1px;height:22px}.workspace{--plan-frac:.48;grid-template-columns:280px calc((100% - 286px) * var(--plan-frac)) 6px 1fr;flex:1;min-height:0;display:grid}.sidebar{background:var(--panel);border-right:1px solid var(--border);flex-direction:column;min-height:0;display:flex}.tabs{border-bottom:1px solid var(--border);display:flex}.tab{color:var(--muted);background:0 0;border:none;border-bottom:2px solid 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var(--border);background:var(--panel);border-radius:6px;width:44px;height:28px;padding:2px}.input-unit{position:relative}.input-unit em{color:var(--muted);pointer-events:none;font-size:11px;font-style:normal;position:absolute;top:50%;right:8px;transform:translateY(-50%)}.input-unit input{padding-right:26px}.actions{flex-wrap:wrap;gap:6px;margin-top:4px;display:flex}.preset-grid{grid-template-columns:1fr 1fr;gap:6px;margin-bottom:10px;display:grid}.preset{align-items:center;gap:6px;padding:6px;font-size:12px;display:flex}.preset.active{border-color:var(--accent);background:var(--accent-soft)}.preset-icon{flex:none;width:26px;height:26px}.preset-icon path{fill:var(--plan-floor);stroke:var(--text);stroke-width:1.5px}.stats{grid-template-columns:auto 1fr;gap:4px 12px;margin:0;display:grid}.stats dt{color:var(--muted)}.stats dd{text-align:right;font-variant-numeric:tabular-nums;margin:0}.warning{color:var(--danger);margin:8px 0 0;font-size:12px}.help 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8px);border-bottom-width:1px;height:6px}.lib-icon.style-roundtable:before,.lib-icon.style-canister:before{border-bottom-width:1px;border-radius:50%}.lib-chips{gap:6px;margin:6px 0 8px;display:flex}.chip{border-radius:999px;padding:3px 10px;font-size:12px}.chip.active{border-color:var(--accent);background:var(--accent-soft)}.lib-cat{border-top:1px solid var(--border);padding:4px 0}.lib-cat>summary{cursor:pointer;justify-content:space-between;align-items:center;padding:6px 2px;font-size:13px;font-weight:600;list-style:none;display:flex}.lib-cat>summary::-webkit-details-marker{display:none}.lib-cat>summary:before{content:"▸";color:var(--muted);margin-right:6px;transition:transform .15s}.lib-cat[open]>summary:before{transform:rotate(90deg)}.lib-cat>summary>span:first-child{flex:1}.lib-count{color:var(--muted);font-size:11px;font-weight:400}.lib-cat .lib-grid{padding-bottom:6px}.lib-name{font-size:12px;line-height:1.2}.lib-size{color:var(--muted);font-size:11px}.ad-wrap{border-top:1px solid var(--border);flex-direction:column;align-items:center;margin-top:16px;padding-top:10px;display:flex}.ad-label{text-transform:uppercase;letter-spacing:.6px;color:var(--muted);margin-bottom:4px;font-size:10px}.ad-slot{max-width:100%;overflow:hidden}.ad-placeholder{border:1px dashed var(--border);color:var(--muted);background:repeating-linear-gradient(45deg, transparent 0 8px, color-mix(in srgb, var(--border) 35%, transparent) 8px 9px);border-radius:6px;flex-direction:column;justify-content:center;align-items:center;gap:2px;font-size:12px;display:flex}.ad-size{opacity:.8;font-size:11px}.pane{flex-direction:column;min-width:0;min-height:0;display:flex}.pane-bar{background:var(--panel);border-bottom:1px solid var(--border);align-items:center;gap:10px;min-height:40px;padding:6px 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18px}.dialog::backdrop{background:#00000059}.dialog-head{justify-content:space-between;align-items:center;display:flex}.dialog-head h2{margin:0;font-size:17px}.project-list{max-height:60vh;margin:10px 0 0;padding:0;list-style:none;overflow-y:auto}.project-list li{border:1px solid var(--border);border-radius:8px;align-items:center;gap:10px;margin-bottom:8px;padding:10px;display:flex}.project-list li.current{border-color:var(--accent)}.pl-info{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.pl-info strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.pl-actions{align-items:center;gap:6px;display:flex}.badge{color:var(--accent);padding:0 6px;font-size:12px}.toast{background:var(--text);color:var(--panel);z-index:10;border-radius:8px;max-width:calc(100vw - 32px);padding:8px 14px;position:fixed;top:60px;left:50%;transform:translate(-50%)}@media 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