:root{color-scheme:light;--ink:#213d36;--muted:#7a8881;--green:#287658;--line:#e1e7df;--paper:#fff;--bg:#f7f8f5;font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.35;cursor:default}button:focus-visible,a:focus-visible{outline:3px solid #79b89b;outline-offset:3px}a{color:inherit;text-decoration:none}button{border:0;background:none;color:inherit}button,input,select{min-height:44px}[hidden]{display:none!important}.app-header{height:76px;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 34px;gap:35px;background:#fcfdfb}.back-link{font-size:13px;color:var(--muted)}.wordmark{display:flex;gap:10px;align-items:center;font-weight:650;font-size:17px}.wordmark strong{font-size:15px;font-weight:500}.brand-icon{display:grid;place-items:center;width:31px;height:31px;border-radius:10px;background:var(--green);color:white;font-size:29px}.brand-divider{color:#c2cbc3;margin:0 8px}.prototype-badge{margin-left:auto;font-size:11px;background:#f2e9d7;color:#8d6b30;padding:6px 10px;border-radius:6px;white-space:nowrap}.workspace{display:grid;grid-template-columns:234px minmax(0,1fr) 254px;gap:26px;max-width:1680px;margin:auto;padding:34px 30px}.intro{padding:11px 0 26px}.eyebrow{font-size:9px;font-weight:650;letter-spacing:1.8px;color:#819486}.intro h1{font-size:29px;line-height:1.55;letter-spacing:-1px;font-weight:550;margin:16px 0 11px}.intro p{font-size:12px;line-height:1.9;color:var(--muted);max-width:200px}.steps{display:grid;gap:9px}.step{display:flex;text-align:left;align-items:center;gap:12px;padding:15px 12px;border-radius:12px;border:1px solid transparent}.step>span{font-size:11px;border:1px solid var(--line);border-radius:50%;width:29px;height:29px;display:grid;place-items:center;flex-shrink:0}.step strong{font-weight:550;font-size:13px}.step small{display:block;font-size:10px;color:var(--muted);margin-top:7px}.step.active{background:#e9f0e6;border-color:#dbe6d7}.step.active>span{background:var(--green);color:#fff;border-color:var(--green)}.workflow-note{border-top:1px solid var(--line);margin:38px 8px 0 0;padding-top:23px;display:flex;gap:10px;font-size:12px}.note-dot{width:7px;height:7px;background:#8bab6f;border-radius:50%;flex-shrink:0;margin-top:5px}.workflow-note strong{font-weight:500}.workflow-note p{color:var(--muted);font-size:11px;line-height:1.9;margin:8px 0}.prototype-note{font-size:10px;color:#9b9e91;line-height:1.8;margin:26px 16px}.editor{min-width:0;background:var(--paper);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 12px 40px #213b3610}.editor-heading{display:flex;justify-content:space-between;align-items:center;padding:24px 25px 20px;gap:12px}.editor-heading h2{font-size:21px;font-weight:550;margin:8px 0 0}.save-state{font-size:10px;color:#819486;white-space:nowrap}.save-state:before{content:"";display:inline-block;width:5px;height:5px;border-radius:50%;background:#89ad86;margin-right:6px}.floor-bar{display:flex;align-items:center;gap:5px;border-top:1px solid #f0f3ed;padding:0 18px;min-height:51px}.floor-tabs{display:flex;gap:4px;overflow-x:auto}.floor-tab{font-size:12px;padding:0 12px;white-space:nowrap;border-bottom:2px solid transparent}.floor-tab.active{color:var(--green);border-color:var(--green);font-weight:600}.icon-button{font-size:19px;min-width:44px}.text-button{font-size:11px;color:var(--green);padding:8px 10px}.floor-bar>.text-button{margin-left:auto;white-space:nowrap}.canvas-shell{height:clamp(340px,48vw,560px);position:relative;overflow:hidden;background:#f1f4ee;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}#plan{display:block;width:100%;height:100%;touch-action:none;user-select:none}#plan text{font-family:"Microsoft YaHei",sans-serif;pointer-events:none}#plan .room{cursor:grab}#plan .object{cursor:move}.three-stage{position:absolute;inset:0;touch-action:none}.three-stage canvas{display:block;width:100%;height:100%;touch-action:none}.view-controls{position:absolute;right:14px;top:14px;display:flex;background:#ffffffeb;border:1px solid #dce4da;border-radius:9px;padding:3px;box-shadow:0 3px 12px #233b3410}.view-button{font-size:11px;min-height:34px;min-width:43px;border-radius:6px}.view-button.active{background:var(--ink);color:white}.canvas-caption{position:absolute;bottom:13px;left:17px;font-size:10px;color:#849185;pointer-events:none;max-width:80%}.empty-state{position:absolute;inset:70px 15px;display:flex;flex-direction:column;justify-content:center;align-items:center;pointer-events:none;text-align:center}.empty-state>*{pointer-events:auto}.empty-home{font-size:48px;color:#9cb395;font-weight:300}.empty-state h3{font-size:18px;font-weight:500;margin:8px 0}.empty-state p{font-size:12px;line-height:1.9;color:var(--muted);margin:6px 0 18px}.primary-button,.secondary-button{border-radius:9px;padding:11px 17px;font-size:12px;line-height:1.5;display:inline-flex;justify-content:center;align-items:center;gap:18px}.primary-button{background:var(--green);color:#fff}.primary-button:hover{background:#205f47}.secondary-button{border:1px solid #d8e2d4;background:#fff;color:var(--ink)}.toolbar{display:flex;align-items:center;gap:3px;padding:9px 14px;min-height:65px;flex-wrap:wrap}.tool-button{font-size:18px;display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 10px;border-radius:8px;min-width:42px}.tool-button span{font-size:11px}.tool-button.active{background:#eaf1e6;color:var(--green)}.tool-spacer{flex:1}.editor-footer{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:15px 20px;border-top:1px solid var(--line)}.editor-footer p{font-size:11px;line-height:1.7;color:var(--muted);margin:0}.editor-footer button{flex-shrink:0}.inspector{padding-top:9px;min-width:0}.panel-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:19px}.panel-header h3{font-weight:550;font-size:14px;margin:0}.panel-card{border:1px solid var(--line);border-radius:12px;padding:17px;background:#fff;margin-bottom:15px}.panel-card h4{margin:0 0 13px;font-weight:550;font-size:12px}.panel-card p{font-size:11px;line-height:1.9;color:var(--muted);margin:7px 0}.panel-card .secondary-button,.panel-card .primary-button{width:100%;margin-top:10px}.stat-row{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--muted);margin:12px 0;gap:10px}.stat-row strong{color:var(--ink);font-size:12px;font-weight:550}.field{display:grid;gap:7px;margin:13px 0;font-size:11px;color:#6a7b70}.field input,.field select,dialog input{border:1px solid #dce4d8;border-radius:7px;padding:10px 9px;width:100%;background:#fafcf8;color:var(--ink);min-width:0}.field-pair{display:grid;grid-template-columns:1fr 1fr;gap:10px}.field-pair .field{margin:0}.field input:focus,.field select:focus{outline:2px solid #a6c5a5}.small-note{font-size:10px!important;color:#8e998c!important}.delete-button{color:#aa604c;font-size:11px;padding:10px 5px}.mini-illustration{background:#eef3e9;border-radius:9px;min-height:106px;display:grid;place-items:center;font-size:45px;color:#85a67c;margin-bottom:15px}.inspector-list{display:grid;gap:6px}.object-item{text-align:left;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:9px 10px;border-radius:8px;background:#f5f7f2;font-size:12px;min-height:44px}.object-item.active{background:#e6efdf;color:var(--green)}.object-item small{font-size:10px;color:var(--muted)}.coverage-legend{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:8px;background:#ffffffed;padding:9px 12px;border-radius:8px;font-size:10px;white-space:nowrap;pointer-events:none}.coverage-legend i{width:100px;height:6px;background:linear-gradient(90deg,#38b4a3,#b9cf71,#edb663,#d77968);border-radius:5px}.coverage-legend small{font-size:9px;color:var(--muted);margin-left:6px}.segment-control{display:flex;gap:5px;background:#edf2e8;padding:4px;border-radius:8px}.segment-control button{flex:1;font-size:12px;border-radius:6px;min-height:38px}.segment-control button.active{background:white;box-shadow:0 2px 6px #253b3010;color:var(--green)}.signal-value{font-size:36px;font-weight:450;letter-spacing:-1.5px;margin:12px 0;color:var(--green)}.signal-value small{font-size:12px;letter-spacing:0;color:var(--muted)}.result-label{font-size:12px}.toast{position:fixed;bottom:27px;left:50%;transform:translate(-50%,15px);background:#213d36f5;color:white;padding:13px 20px;border-radius:10px;font-size:12px;max-width:min(90vw,580px);opacity:0;pointer-events:none;transition:.18s;z-index:20;line-height:1.7}.toast.visible{opacity:1;transform:translate(-50%,0)}dialog{border:1px solid var(--line);border-radius:18px;padding:25px;width:min(440px,90vw);color:var(--ink)}dialog::backdrop{background:#19352e66;backdrop-filter:blur(3px)}dialog h2{font-size:20px;font-weight:500}dialog p{font-size:12px;line-height:1.8;color:var(--muted)}dialog label{display:grid;gap:9px;font-size:12px}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}
@media(min-width:1500px){.workspace{gap:34px;grid-template-columns:250px minmax(0,1fr) 270px;padding-top:45px}.canvas-shell{height:580px}}
@media(max-width:1180px){.workspace{grid-template-columns:180px minmax(0,1fr) 220px;gap:16px;padding:25px 18px}.intro h1{font-size:24px}.intro .eyebrow{font-size:8px;letter-spacing:1px}.step{padding:12px 4px;gap:9px}.editor-heading{padding:20px 18px}.toolbar{padding:8px}.tool-button{padding:7px}.editor-footer{padding:14px}.save-state{font-size:9px}}
@media(max-width:960px){.workspace{grid-template-columns:minmax(0,1fr) 230px}.workflow{grid-column:1/-1}.intro,.workflow-note,.prototype-note{display:none}.steps{display:flex;gap:12px}.step{flex:1;padding:10px}.step small{font-size:9px}.canvas-shell{height:490px}}
@media(max-width:640px){.app-header{height:58px;padding:0 14px;gap:13px}.back-link{font-size:21px}.back-link span{display:none}.wordmark{font-size:14px;gap:7px}.wordmark strong{font-size:12px}.brand-icon{width:26px;height:26px;font-size:25px}.brand-divider{margin:0 2px}.prototype-badge{font-size:9px;padding:5px 7px}.workspace{display:flex;flex-direction:column;padding:12px 10px 24px;gap:12px}.steps{gap:5px}.step{gap:7px;padding:9px 7px;border-radius:9px}.step>span{width:24px;height:24px;font-size:9px}.step strong{font-size:10px;white-space:nowrap}.step small{display:none}.editor{border-radius:13px}.editor-heading{padding:16px 15px}.editor-heading .eyebrow{font-size:8px;letter-spacing:1.2px}.editor-heading h2{font-size:18px;margin-top:7px}.save-state{font-size:8px;max-width:100px;text-align:right}.floor-bar{padding:0 9px;min-height:47px}.floor-tab{padding:0 10px;font-size:11px}.floor-bar>.text-button{font-size:10px;padding:7px}.canvas-shell{height:clamp(310px,49svh,460px)}.view-controls{top:9px;right:9px}.view-button{min-height:34px;min-width:40px}.canvas-caption{font-size:8px;left:10px;bottom:10px}.empty-state{inset:48px 8px}.empty-home{font-size:37px}.empty-state h3{font-size:16px}.empty-state p{font-size:10px;margin:5px 0 10px}.empty-state .secondary-button{font-size:11px;min-height:40px}.toolbar{gap:1px;padding:6px 5px;min-height:57px}.tool-button{font-size:17px;padding:7px 6px;min-width:35px;gap:3px}.tool-button span{font-size:10px}.editor-footer{padding:12px;gap:9px}.editor-footer p{font-size:9px}.editor-footer .primary-button{font-size:11px;padding:10px 12px;gap:10px}.inspector{padding:3px 3px 0;display:grid;grid-template-columns:1fr;gap:0}.panel-header{margin:5px 2px 12px}.panel-card{padding:15px;margin-bottom:10px}.mini-illustration{display:none}.inspector-list{grid-template-columns:1fr 1fr}.coverage-legend{gap:6px;padding:8px}.coverage-legend i{width:75px}.coverage-legend small{font-size:8px}.toast{bottom:calc(15px + env(safe-area-inset-bottom));font-size:11px}.editor-footer{padding-bottom:max(12px,env(safe-area-inset-bottom))}}