:root{--felt: #f4f5fa;--paper: #ffffff;--ink: #1d1b2f;--mute: #646880;--line: #dfe2ec;--accent: #5b3fd3;--pin: var(--accent);--stage: #eaf2fd;--quiet: #2a7a5f;--loud: #c13a5c;--display: Inter, "Segoe UI Variable Display", "Segoe UI", "Helvetica Neue", system-ui, sans-serif;--body: Inter, "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, sans-serif;--data: Consolas, ui-monospace, "SF Mono", Menlo, monospace}*{box-sizing:border-box}html{background:var(--felt)}body{margin:0;color:var(--ink);font:16px/1.5 var(--body)}a{color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.wrap{max-width:1180px;margin:0 auto;padding:0 20px}.bar{background:var(--paper);border-bottom:1px solid var(--line)}.bar .wrap{display:flex;align-items:center;justify-content:space-between;gap:8px 24px;min-height:60px;flex-wrap:wrap}.brand{font:400 19px/1 var(--display);letter-spacing:-.01em;display:flex;align-items:center;gap:10px}.brand b{font-weight:700}.brand svg{width:28px;height:28px}.brand svg rect{fill:var(--accent)}.brand svg path{stroke:#fff;stroke-width:3;stroke-linecap:round;fill:none}.brand small{font-size:13px;color:var(--mute);padding-left:10px;border-left:1px solid var(--line)}.head{padding:30px 0 26px}.eyebrow{font-size:14px;color:var(--mute)}h1{margin:10px 0 12px;font:300 clamp(36px,5.6vw,64px)/1.05 var(--display);letter-spacing:-.03em;text-wrap:balance;max-width:20ch}h1 b{font-weight:650}.lead{margin:0;max-width:62ch;color:var(--mute);font-size:17px}.lead b{color:var(--ink);font-weight:600}h2{margin:0 0 12px;font:600 15px/1.2 var(--body);letter-spacing:.01em}.grid{display:grid;grid-template-columns:1.9fr 1fr;gap:16px;align-items:start}.grid>*,.col>*{min-width:0}.col{display:grid;gap:16px}.panel{background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:20px}.panel>svg{display:block;width:100%;height:auto}.panel>svg text{font-family:var(--data)}.cap{font-size:13px;color:var(--mute);margin:12px 0 0}.hint{font-size:13px;color:var(--mute);margin:8px 0 0}.error{font-size:14px;color:var(--loud);margin:12px 0 0}.resultplan{display:block;width:100%;height:auto;max-height:72vh;border:1px solid var(--line);border-radius:4px;background:var(--stage)}.resultplan text{font-family:var(--data);fill:var(--ink)}.resultplan .room{fill:#fff;fill-opacity:.8;stroke:var(--ink);stroke-width:1;stroke-linejoin:round}.resultplan .zone{fill:var(--quiet);fill-opacity:.1;stroke:var(--quiet);stroke-width:.6;stroke-dasharray:2 1.4}.resultplan .desk{fill:#fff;stroke:var(--ink);stroke-width:.5}.resultplan .small{font-size:3px}.resultplan .level{font-size:4.6px;font-weight:700}.resultplan .halo{fill:var(--loud);fill-opacity:.18}.resultplan .ink{fill:var(--ink)}.resultplan .measure{stroke:var(--mute);stroke-width:.3;stroke-dasharray:1.2 1}.resultplan .dim{font-size:2.8px;fill:var(--mute)}.resultplan .panelline{stroke:var(--ink);stroke-width:2.4;stroke-linecap:round}.resultplan .badge{fill:var(--accent);stroke:#fff;stroke-width:.5}.resultplan .badgetext{font-size:4px;font-weight:700}.field+.field,.run{margin-top:18px}.seg{display:flex;gap:4px;flex-wrap:wrap}.seg button{flex:1;font:14px var(--body);padding:7px 10px;border-radius:6px;cursor:pointer;white-space:nowrap;border:1px solid var(--line);background:#fff;color:var(--ink)}.seg button:hover:not(:disabled){border-color:var(--accent)}.seg button[aria-pressed=true]{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:600}.seg button:disabled{cursor:default;opacity:.6}.btn{width:100%;font:600 15px var(--body);padding:10px 14px;border-radius:6px;border:1px solid var(--accent);background:var(--accent);color:#fff;cursor:pointer}.btn:disabled{background:transparent;color:var(--mute);border-color:var(--line);cursor:default}.btn.ghost{background:transparent;color:var(--accent)}.btn.next{margin-top:18px}.progress{margin-top:14px}.progress .track{height:6px;border-radius:3px;background:var(--line);overflow:hidden}.progress .timer{font:600 13px var(--data);color:var(--ink);margin-right:6px}.progress .live{margin:14px 0 6px}.jobs{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}.jobs li{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:8px 0;border-bottom:1px solid var(--line);font-size:14px}.jobs small{display:block;color:var(--mute);font-size:13px}.jobs b{font:600 13px var(--data);white-space:nowrap}.progress .track i{display:block;height:100%;background:var(--accent);transition:width .4s}.score{display:flex;align-items:flex-end;gap:20px}.score div small{display:block;font-size:13px;color:var(--mute)}.score div span{font:300 56px/1 var(--display);letter-spacing:-.03em}.score div:last-child span{font-weight:650;color:var(--quiet)}.score em{font:400 18px var(--body);letter-spacing:0;color:var(--mute)}.score .arrow{font-size:24px;color:var(--mute);padding-bottom:8px}.facts{margin:16px 0 0;padding:0;list-style:none;border-top:1px solid var(--line)}.facts li{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}.facts li b{font:600 14px var(--data);white-space:nowrap}.where{margin:0;padding:0;list-style:none;display:grid;gap:10px}.where li{display:grid;grid-template-columns:24px 1fr;gap:10px;font-size:14px;align-items:start}.where li>b{width:24px;height:24px;border-radius:50%;background:var(--accent);color:#fff;font:700 13px/24px var(--data);text-align:center}.where small{display:block;color:var(--mute);font-size:13px}footer.note{padding:28px 0 44px;font-size:13px;color:var(--mute);max-width:80ch}@media (max-width: 900px){.grid{grid-template-columns:1fr}}@media (prefers-reduced-motion: reduce){*{transition:none!important}}.start{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding-bottom:44px}.start button{text-align:left;padding:22px 20px;border-radius:8px;border:1px solid var(--line);background:var(--paper);color:var(--ink);cursor:pointer;font:15px var(--body)}.start button:hover{border-color:var(--accent);box-shadow:0 2px 10px #5b3fd31f}.start button b{display:block;font:600 19px var(--display);margin-bottom:6px}.start button span{color:var(--mute)}.steps{list-style:none;display:flex;flex-wrap:wrap;gap:6px 26px;margin:0;padding:14px 0 0}.steps button{display:flex;align-items:center;gap:8px;padding:6px 0;border:0;border-bottom:2px solid transparent;background:none;color:var(--mute);font:15px var(--body);cursor:pointer}.steps button i{width:22px;height:22px;border-radius:50%;border:1px solid currentColor;font:600 12px/20px var(--data);text-align:center}.steps button:hover:not(:disabled){color:var(--ink)}.steps button[aria-current=step]{color:var(--ink);font-weight:600;border-color:var(--pin)}.steps button[aria-current=step] i{background:var(--accent);color:#fff;border-color:var(--accent)}.steps button:disabled{opacity:.45;cursor:default}.viewswitch{width:130px;margin:0 0 12px auto}details.more>summary,details.advanced>summary{cursor:pointer;font:600 15px var(--body)}details.more[open]>summary,details.advanced[open]>summary{margin-bottom:16px}details.more>.panel{border:0;padding:0;margin-top:20px;background:none}details.advanced{margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}@media (max-width: 900px){.start{grid-template-columns:1fr}}.toolbar,.scanbar{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:10px}.toolbar .gap{flex:1}.toolbar button,.scanbar button{font:14px var(--body);padding:6px 10px;border-radius:6px;cursor:pointer;white-space:nowrap;border:1px solid var(--line);background:#fff;color:var(--ink)}.toolbar button:hover:not(:disabled),.scanbar button:hover{border-color:var(--accent)}.toolbar button:disabled{opacity:.45;cursor:default}.toolbar button.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.scanbar{gap:8px 18px;padding:10px 12px;border:1px solid var(--line);border-radius:6px;background:#fff;font-size:13px}.scanbar .file{color:var(--mute);font-family:var(--data)}.scanbar label{display:flex;align-items:center;gap:8px}.scanbar output{font:600 13px var(--data);min-width:52px}.scanbar input[type=range]{width:130px;accent-color:var(--accent)}.scanbar button{margin-left:auto}.canvas{display:block;width:100%;height:auto;max-height:72vh;border:1px solid var(--line);border-radius:4px;background:var(--stage);touch-action:none;-webkit-user-select:none;user-select:none}.canvas.tracing{cursor:crosshair}.canvas .room{fill:#fff;fill-opacity:.8;stroke:var(--ink);stroke-width:1;stroke-linejoin:round}.canvas .room.ghost{fill-opacity:.25;stroke-opacity:.3;stroke-dasharray:2 2}.canvas .scan{fill:none;stroke:#2b6fd0;stroke-width:.5;stroke-linecap:round;pointer-events:none}.canvas .dim{font:2.6px var(--data);fill:var(--mute);text-anchor:middle;pointer-events:none}.canvas .addcorner{fill:#fff;stroke:var(--ink);stroke-width:.4;cursor:copy}.canvas .addcorner:hover{fill:var(--pin)}.canvas .item{cursor:grab;outline:none}.canvas .item:active{cursor:grabbing}.canvas .corner{fill:#fff;stroke:var(--ink);stroke-width:.6}.canvas .desk rect{fill:#fff;stroke:var(--ink);stroke-width:.5}.canvas .slot line{stroke:var(--ink);stroke-width:1.2;stroke-dasharray:2 1.4;stroke-linecap:round}.canvas .slot line.hit{stroke:transparent;stroke-width:5;stroke-dasharray:none}.canvas .source circle{fill:var(--ink)}.canvas .source .halo{fill:var(--loud);fill-opacity:.18}.canvas .source .label{font:3px var(--data);fill:var(--ink);text-anchor:middle;pointer-events:none}.canvas .item.on.corner,.canvas .item.on.desk rect{fill:var(--pin)}.canvas .item.on.slot line:not(.hit){stroke:var(--pin);stroke-width:1.8;stroke-dasharray:none}.canvas .item.on.source .halo{fill:var(--pin);fill-opacity:.5}.canvas .item:focus-visible{filter:drop-shadow(0 0 .6px var(--ink))}.canvas .trace{fill:none;stroke:var(--loud);stroke-width:.8;stroke-linejoin:round}.canvas .tracepoint{fill:#fff;stroke:var(--loud);stroke-width:.6}.canvas .tracepoint.first{fill:var(--loud)}.canvas .item.out.desk rect{stroke:var(--loud);stroke-dasharray:1.2 1}.canvas .item.out.slot line:not(.hit){stroke:var(--loud)}.view3d{position:relative}.view3d .stage{width:100%;aspect-ratio:16 / 10;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--felt);cursor:grab}.view3d .stage:active{cursor:grabbing}.view3d canvas{display:block;width:100%;height:100%}.view3d .reset{position:absolute;top:10px;right:10px;font:13px var(--body);padding:5px 10px;border-radius:6px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer}.view3d .reset:hover{border-color:var(--accent)}.seg button small{display:block;font:12px var(--data);opacity:.7}.cap .inline input{width:62px;font:13px var(--data);padding:2px 4px;border:1px solid var(--line);border-radius:4px;background:#fff;color:var(--ink)}.canvas .zone{fill:var(--quiet);fill-opacity:.1;stroke:var(--quiet);stroke-width:.6;stroke-dasharray:2 1.4}.canvas .zone.on{fill-opacity:.22;stroke-dasharray:none;stroke-width:.9}.canvas .zonehandle{fill:#fff;stroke:var(--quiet);stroke-width:.6;cursor:nwse-resize}.canvas .zonelabel{font:3px var(--data);fill:var(--ink);pointer-events:none}.scanbar input[type=text]{width:150px;font:13px var(--body);padding:3px 6px;border:1px solid var(--line);border-radius:4px;background:#fff;color:var(--ink)}.scanbar .group{display:flex;align-items:center;gap:4px}.scanbar .group button{margin-left:0;padding:4px 9px}.scanbar button[aria-pressed=true]{background:var(--accent);color:#fff;border-color:var(--accent)}.scanbar select{font:13px var(--body);padding:3px 6px;border:1px solid var(--line);border-radius:4px;background:#fff;color:var(--ink)}.runlog h3{margin:18px 0 8px;font:600 14px var(--body)}.runlog .logbar{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap}.runlog .logbar label{font-size:13px;color:var(--mute)}.runlog .compare{overflow-x:auto}table.t{width:100%;border-collapse:collapse;font-size:13px}.t th{text-align:right;font-weight:400;color:var(--mute);padding:0 0 6px 12px;white-space:nowrap}.t th:first-child,.t td:first-child{text-align:left;padding-left:0}.t td{text-align:right;padding:6px 0 6px 12px;border-top:1px solid var(--line);font-family:var(--data);white-space:nowrap}.t td:first-child{font-family:var(--body)}.log{list-style:none;margin:0;padding:0;max-height:360px;overflow-y:auto;border:1px solid var(--line);border-radius:6px;background:#fff;font-size:13px}.log li{display:grid;grid-template-columns:44px 74px 1fr;gap:10px;padding:6px 10px;border-top:1px solid var(--line);align-items:start}.log li:first-child{border-top:0}.log .time{font-family:var(--data);color:var(--mute)}.log .kind{font:600 11px/18px var(--body);text-transform:uppercase;letter-spacing:.04em;text-align:center;border-radius:4px;background:var(--felt);color:var(--mute)}.log li[data-kind=sent] .kind{background:var(--accent);color:#fff}.log li[data-kind=received] .kind{background:var(--quiet);color:#fff}.log li[data-kind=error] .kind{background:var(--loud);color:#fff}.log li[data-kind=error] .message{color:var(--loud)}.log li[data-kind=solver] .message{font-family:var(--data);color:var(--mute)}.log details{margin-top:2px}.log summary{cursor:pointer;color:var(--mute);font-size:12px}.log pre{margin:4px 0 0;padding:8px;background:var(--felt);border-radius:4px;font:12px/1.4 var(--data);white-space:pre-wrap;word-break:break-word}.btn.small{width:auto;font-size:13px;padding:6px 12px}.explanation{white-space:pre-line;font-size:15px;margin:10px 0 0;max-width:68ch}
