*{box-sizing:border-box}body{margin:0;font:14px Inter,Arial,sans-serif;color:#193c36;background:#e9f0ed}button,select,input{font:inherit}button{cursor:pointer;border:1px solid #d2e1dc;background:#fff;border-radius:9px;padding:10px 12px;color:#173e34;font-weight:650}button:hover{border-color:#28785a}button.active,button.primary,#ai,nav .active{background:#07553e;color:#fff}header{height:86px;background:white;display:flex;align-items:center;gap:26px;padding:14px 24px;border-bottom:1px solid #dce8e3}.brand{display:flex;gap:10px;align-items:center;min-width:240px}.brand .mark{font-size:40px;color:#0f9b91}.brand b{font-size:23px;letter-spacing:1px}.brand small{display:block;letter-spacing:2px;font-size:9px;color:#7b9791}nav{display:flex;gap:8px}nav a{text-decoration:none;padding:12px 15px;border:1px solid #dce6e3;border-radius:9px;color:#1d483b;white-space:nowrap}.head-actions{display:flex;gap:7px;margin-left:auto}.head-actions button{white-space:nowrap}main{display:grid;grid-template-columns:265px minmax(420px,1fr) 270px;gap:12px;padding:12px;height:calc(100vh - 86px);min-height:610px}.catalog,.properties,.center{background:#fff;border:1px solid #d6e4df;border-radius:12px;min-height:0}.catalog,.properties{overflow:auto;padding:16px}.catalog h5{letter-spacing:1.5px;color:#237259;margin:0 0 5px}.catalog h2{font-size:20px;margin:0 0 14px}.catalog input{width:100%;padding:11px;border:1px solid #d4e1dd;border-radius:8px}.cats{display:flex;gap:5px;flex-wrap:wrap;margin:12px 0}.cats button{font-size:11px;padding:7px 9px}.catalog-items{display:grid;grid-template-columns:1fr 1fr;gap:9px}.item{border:1px solid #d9e5e1;border-radius:9px;padding:7px;min-height:105px;text-align:center;cursor:pointer}.item:hover{background:#eff8f4}.item .emoji{display:grid;place-items:center;height:65px;font-size:39px;background:#f6f8f7;border-radius:7px}.item b{font-size:12px}.center{display:flex;flex-direction:column;overflow:hidden}.steps{display:flex;justify-content:space-around;gap:4px;padding:15px 8px;border-bottom:1px solid #e0ebe6;white-space:nowrap;font-size:12px}.steps span.on{font-weight:bold;color:#086342}.toolbar{display:flex;flex-wrap:wrap;gap:6px;padding:10px;border-bottom:1px solid #dce9e4}.toolbar button,.toolbar select{font-size:12px;padding:9px}.toolbar label{display:flex;align-items:center}.workspace{position:relative;flex:1;min-height:0;background:#f8fbfa}#plan{width:100%;height:calc(100% - 30px);touch-action:none;cursor:crosshair}.workspace-bottom{height:30px;display:flex;justify-content:space-between;padding:7px 12px;font-size:11px;color:#55786d;background:white;border-top:1px solid #e1eae7}.properties h3{margin:0 0 12px}.properties select{width:100%;padding:11px;border:1px solid #d6e2de;border-radius:8px}.preview{height:130px;background:#f3f7f5;border-radius:9px;margin:12px 0;display:grid;place-items:center;font-size:60px}.fields{display:grid;grid-template-columns:1fr 1fr;gap:10px}.fields label{font-size:12px}.fields input{display:block;width:100%;padding:10px;margin-top:5px;border:1px solid #d6e2de;border-radius:8px}.full{width:100%;margin-top:12px}.hint{color:#668278;font-size:12px;line-height:1.5}.panel{border:1px solid #d7e5df;border-radius:9px;padding:12px;margin-top:14px}.panel h4{margin:0}.panel p{font-size:12px;line-height:1.7;color:#5d766d}#scene3d{position:absolute;inset:0 0 30px;background:#d8e5eb}#threeCanvas{width:100%;height:100%;display:block}.scene-controls{position:absolute;top:10px;right:10px;display:flex;gap:5px}dialog{border:0;border-radius:14px;padding:25px;max-width:520px;box-shadow:0 10px 50px #0003}@media(max-width:1050px){main{grid-template-columns:195px minmax(320px,1fr) 220px}.brand{min-width:160px}.brand b{font-size:16px}header{gap:9px;padding:8px}.head-actions button{font-size:11px;padding:8px}}@media(max-width:780px){main{grid-template-columns:1fr;height:auto}.center{height:65vh}.catalog{max-height:220px}.properties{max-height:500px}header{height:auto;flex-wrap:wrap}.head-actions{flex-wrap:wrap}}

/* Visual redesign: polished catalog and spatial editor */
body{font-family:Inter,'Segoe UI',Arial,sans-serif;background:#f1f7f6;color:#173b34}header{height:84px;box-shadow:0 1px 2px #102f2810;padding:12px 22px;gap:22px}.brand{min-width:275px}.brand .mark{font-size:47px;color:#12a69a}.brand b{font-size:24px;color:#084b3b;letter-spacing:.5px}.brand small{font-size:9px;color:#6c918b;letter-spacing:1.8px}nav a{padding:14px 18px;font-weight:700}.head-actions button{border:0;background:transparent}.head-actions #ai{background:#06543d;padding:13px 17px}.head-actions #help{border:1px solid #d7e4e1}main{grid-template-columns:310px minmax(520px,1fr) 300px;gap:10px;padding:9px;height:calc(100vh - 84px)}.catalog,.properties,.center{border:1px solid #dbe9e5;border-radius:9px}.catalog,.properties{padding:15px}.catalog h2{font-size:20px}.catalog h5{font-size:11px}.cats button{font-size:11px;padding:8px 10px}.catalog-items{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.item{padding:5px;min-height:101px;border-radius:7px}.item .emoji{height:72px;background:#f8faf9;font-size:30px;overflow:hidden}.item .emoji img{width:100%;height:100%;object-fit:cover;mix-blend-mode:multiply}.item b{font-size:11px;font-weight:600;display:block;margin-top:5px}.steps{align-items:center;padding:14px 9px;min-height:65px}.steps span{display:flex;align-items:center;gap:8px;font-size:12px}.steps span i{font-style:normal;border:1px solid #a8bcb7;color:#3b6a5b;border-radius:50%;height:27px;width:27px;display:grid;place-items:center;font-size:12px}.steps span.on i{background:#07553e;border-color:#07553e;color:white}.toolbar{padding:9px 10px;align-items:center;gap:7px}.toolbar button{padding:10px 12px}.toolbar .shape-control{display:flex;gap:6px;align-items:center;font-size:11px;color:#6d817b}.toolbar select{max-width:130px}.toolbar input[type=checkbox]{accent-color:#0b855e}.workspace{background:#f9fcfb}.canvas-tip{position:absolute;z-index:2;top:12px;left:50%;transform:translateX(-50%);pointer-events:none;background:#ffffffeb;color:#66817a;border:1px solid #e2ebe7;padding:7px 13px;border-radius:6px;font-size:11px;white-space:nowrap}.preview{height:145px;background:#f7f9f8;overflow:hidden}.preview img{width:100%;height:100%;object-fit:contain}.preview-symbol{font-size:65px}.properties h3{font-size:15px}.properties .panel{background:#fff}.properties .panel:first-of-type{background:#f7fbf9}.fields input{padding:10px}.workspace-bottom{font-size:11px}.hint{font-size:11px}button:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid #0d9972;outline-offset:2px}@media(max-width:1350px){main{grid-template-columns:255px minmax(400px,1fr) 255px}.catalog-items{grid-template-columns:repeat(2,minmax(0,1fr))}.brand{min-width:205px}.brand b{font-size:19px}.head-actions{gap:0}.head-actions button{padding:8px}}