:root{--ink:#173e35;--green:#245c4c;--muted:#74847d;--line:#dce4dc;--paper:#fffefa;--bg:#f1f3ec;--soft:#e7eee4;--accent:#bc8b42;font-family:"Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);font-size:13px}*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input,select{font:inherit}button,a{touch-action:manipulation}button{background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:10px 14px;color:var(--ink);cursor:pointer;white-space:nowrap;transition:background .15s}button:hover{background:var(--soft)}button:disabled{opacity:.5;cursor:wait}.primary{background:var(--green);border-color:var(--green);color:white;font-weight:600}.primary:hover{background:#184a3a}.quiet{border-color:transparent;background:transparent;color:var(--muted)}input:not([type=checkbox]):not([type=range]),select{width:100%;border:1px solid var(--line);border-radius:5px;background:var(--paper);padding:9px;color:var(--ink);min-width:0}input:focus,select:focus,button:focus-visible{outline:2px solid #90b39b;outline-offset:2px}input[type=checkbox],input[type=range]{accent-color:var(--green)}.hidden{display:none!important}header{height:88px;padding:18px 28px;display:flex;align-items:center;gap:24px;border-bottom:1px solid var(--line);background:var(--paper)}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;color:inherit}.brand-symbol{display:inline-grid;place-items:center;width:46px;height:46px;border:1px solid #37614e;border-radius:12px 2px 12px 2px;background:var(--green);color:#f6f2d8;font-size:25px}.brand b{font-size:23px;letter-spacing:1px}.brand small{font-size:16px;letter-spacing:0}.brand em{display:block;font-size:11px;font-style:normal;margin-top:4px;color:var(--muted);letter-spacing:2px}.header-actions{display:flex;gap:8px;margin-left:auto}.pill{padding:6px 10px;border-radius:20px;background:var(--soft);font-size:11px;white-space:nowrap}.project-bar{display:flex;align-items:center;gap:28px;padding:20px 28px}.eyebrow{font-size:10px;color:var(--muted);letter-spacing:1.6px}.project-bar h1{margin:6px 0 0;font-size:22px;font-weight:600}.project-bar p{color:var(--muted);margin-top:28px}.project-bar #save-state{margin-left:auto;font-size:11px;color:var(--muted)}main{display:grid;grid-template-columns:245px minmax(450px,1fr) 260px;gap:16px;padding:0 24px;height:calc(100vh - 220px);min-height:610px}.panel{min-width:0;display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);border-radius:10px;overflow:hidden}.panel-title{padding:18px 16px;display:flex;align-items:center;justify-content:space-between;min-height:58px}.panel-title b{font-size:12px;letter-spacing:1px;color:#8a9d8d}.panel-title b span{font-size:14px;color:var(--ink);margin-left:8px;letter-spacing:0}.count{color:var(--muted);font-size:12px}.segmented{display:flex;background:var(--bg);padding:4px;border-radius:6px;margin:0 12px 12px;gap:3px}.segmented button{flex:1;border:0;background:transparent;padding:8px}.segmented button.active{background:white;box-shadow:0 1px 4px #1d3c3511;font-weight:600}.layers-panel>input{width:calc(100% - 24px)!important;margin:0 12px 10px}.element-list{flex:1;overflow:auto;min-height:0;padding:0 7px}.element-item{width:100%;display:flex;align-items:center;border:1px solid transparent;background:transparent;text-align:left;gap:10px;padding:9px 6px;border-radius:6px;margin-bottom:3px;white-space:normal}.element-item img{width:44px;height:44px;object-fit:contain;background:#f0f3ed;border-radius:5px}.element-item.active{border-color:#aec8b8;background:#eaf1e6}.element-item b{display:block;font-size:12px;font-weight:500}.element-item small{display:block;color:var(--muted);font-size:10px;margin-top:4px}.element-item .item-title{overflow:hidden;flex:1}.list-actions{display:flex;padding:10px;gap:8px;border-top:1px solid var(--line)}.list-actions button{flex:1}.muted{color:var(--muted);font-size:11px;line-height:1.7}.layers-panel>.muted{margin:0 14px 14px}.tabs{display:flex;gap:20px;border-bottom:1px solid var(--line);padding:0 18px}.tabs button{border:0;background:transparent;border-radius:0;padding:12px 0;color:var(--muted)}.tabs button.active{color:var(--green);border-bottom:2px solid var(--green);font-weight:600}.view{display:flex;flex:1;min-height:0;flex-direction:column;padding:14px}.canvas-tools{display:flex;align-items:center;gap:10px;font-size:11px;color:var(--muted);margin-bottom:12px}.canvas-tools>span{margin-right:auto}.canvas-tools button{font-size:11px;padding:6px 8px}.check{display:flex!important;align-items:center;gap:5px;font-size:12px;line-height:1.6}.checker{background-color:#f3f3ee;background-image:linear-gradient(45deg,#e8ebe4 25%,transparent 25%),linear-gradient(-45deg,#e8ebe4 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e8ebe4 75%),linear-gradient(-45deg,transparent 75%,#e8ebe4 75%);background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0}.scene-scroll{flex:1;min-height:220px;overflow:auto;border:1px solid var(--line);border-radius:6px;display:grid;place-items:center;padding:16px}#scene-wrap{position:relative;max-width:100%;line-height:0}#scene-image{display:block;max-width:100%;max-height:calc(100vh - 445px);object-fit:contain;box-shadow:0 4px 25px #24453820}#scene-scroll.zoomed #scene-wrap{max-width:none}#scene-scroll.zoomed #scene-image{max-width:none;max-height:none;width:1600px}#selection{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.step-control{display:flex;gap:16px;align-items:center;padding:16px 0 0}.step-control input{flex:1}.step-control label{font-size:11px;color:var(--muted)}.step-control b{color:var(--green);margin-left:5px}.properties-panel form{padding:0 16px;overflow:auto;flex:1}.properties-panel label{display:block;margin:14px 0;font-size:11px}.properties-panel label input,.properties-panel label select{margin-top:6px}.properties-panel .check input{margin:0}.columns{display:flex;gap:10px}.columns>label{flex:1;min-width:0;margin:0}.properties-panel .primary{width:100%;margin-top:8px}.thumbnail{height:160px;border-radius:8px;display:flex;align-items:center;justify-content:center}.thumbnail img{max-width:90%;max-height:140px}.process-note{margin:14px;padding:14px 10px;background:#f4eedf;display:flex;gap:8px;border-radius:7px;font-size:11px;color:#8c743f}.process-note>span{font-size:20px}.process-note p{font-size:10px;margin:6px 0 0}.notice{font-size:12px;line-height:1.8;color:#8c743f;padding:12px;background:#f7f0df;border-radius:6px}.sheet-intro{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}.sheet-intro h2{font-size:17px;margin:4px 0 8px}.sheet-intro p{font-size:11px;line-height:1.6;color:var(--muted);margin:0}.sheet-toolbar{display:flex;gap:8px;margin-bottom:12px}.sheet-toolbar button{font-size:11px;padding:8px}.sheet-area{display:flex;gap:12px;flex:1;min-height:0}.sections{width:140px;overflow:auto;flex-shrink:0}.section-button{display:block;text-align:left;width:100%;white-space:normal;margin-bottom:8px;font-size:11px;line-height:1.7}.section-button.active{border-color:var(--green);background:var(--soft)}.sheet-paper{flex:1;min-width:0;overflow:auto;display:flex;align-items:center;justify-content:center;padding:12px}.sheet-paper img{max-width:100%;box-shadow:0 3px 18px #23432920}.sheet-paper p{font-size:12px;color:var(--muted);line-height:1.9;text-align:center}.section-note{background:#f1f4ec;border-radius:6px;padding:12px;font-size:11px;line-height:1.8;margin-bottom:0}.edge-add{display:flex;gap:6px;align-items:center;margin-bottom:10px}.edge-add button{font-size:11px}.edges{overflow:auto;margin-top:12px;flex:1}.edge{padding:12px 8px;border-bottom:1px solid var(--line);font-size:11px;line-height:1.8}.edge small{color:var(--muted);display:block}.edge-buttons{display:flex;gap:5px;margin-top:5px}.edge button{font-size:10px;padding:4px 8px}.empty{flex:1;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:35px}.empty h2{font-size:24px;font-weight:500}.empty p{font-size:13px;line-height:1.9;color:var(--muted)}.empty-mark{font-size:72px;color:#769579}.empty .primary{margin:12px}footer{display:flex;justify-content:space-between;padding:15px 28px;color:var(--muted);font-size:10px}dialog{border:1px solid var(--line);border-radius:12px;padding:24px;min-width:480px;max-width:90vw;color:var(--ink)}dialog::backdrop{background:#183c3555;backdrop-filter:blur(3px)}.dialog-title{display:flex;align-items:center;justify-content:space-between}.project-card{display:flex;justify-content:space-between;align-items:center;padding:16px 0;border-bottom:1px solid var(--line);gap:25px}.project-card h3{margin:0 0 8px;font-size:15px}.project-card p{font-size:11px;color:var(--muted);margin:0}.job-panel{position:fixed;bottom:24px;right:24px;width:350px;padding:18px;background:#fffefa;box-shadow:0 8px 35px #193b3533;border:1px solid var(--line);border-radius:10px;z-index:20}.job-panel>div{display:flex;justify-content:space-between;align-items:center}.job-panel progress{width:100%;margin-top:12px;accent-color:var(--green)}.job-panel p{font-size:11px;color:var(--muted);line-height:1.7}.job-panel a{display:inline-block;color:var(--green);padding:9px 0;font-weight:600}.toast{position:fixed;top:100px;left:50%;transform:translateX(-50%);padding:14px 22px;border-radius:8px;background:#1d4b3f;color:white;box-shadow:0 4px 20px #102d2b33;z-index:100;max-width:85vw}.login{min-height:100vh;display:grid;place-items:center;background:radial-gradient(ellipse at 80% 30%,#d9e4d2,transparent 60%),var(--bg)}.login-card{width:420px;max-width:95vw;padding:42px;background:var(--paper);border-radius:14px;box-shadow:0 15px 70px #27453618}.login h1{font-size:32px;line-height:1.5;font-weight:500}.login p{color:var(--muted);line-height:1.8}.login label{display:block;margin:24px 0 16px;font-size:12px}.login input{margin-top:8px}.login button{width:100%}.login #login-error{font-size:12px;color:#a65138}@media(max-width:1250px){header{padding:16px;gap:12px}.brand small{display:none}main{grid-template-columns:205px minmax(370px,1fr) 225px;gap:10px;padding:0 12px}.header-actions button{padding:9px}.project-bar{padding:16px}.panel-title{padding:14px 10px}.canvas-tools>span{display:none}.sheet-toolbar{flex-wrap:wrap}.sheet-toolbar select{flex:1;min-width:120px}.sections{width:105px}}@media(max-width:950px){header{height:auto;flex-wrap:wrap}.header-actions{width:100%;overflow:auto}.project-bar{gap:12px;flex-wrap:wrap}.project-bar p{margin:0}.project-bar #save-state{display:none}main{grid-template-columns:200px minmax(360px,1fr);height:auto;min-height:650px}.center-panel{min-height:650px}.properties-panel{grid-column:1/-1;display:block}.properties-panel form{padding:12px 24px}.thumbnail{float:right;width:180px;margin:0 0 15px 20px}.process-note{clear:both}.layers-panel{max-height:750px}#scene-image{max-height:440px}.sheet-area{min-height:350px}}@media(max-width:600px){main{grid-template-columns:1fr}.layers-panel{max-height:300px}.center-panel{min-height:600px}.properties-panel{grid-column:auto}.project-bar{padding:14px}.project-bar h1{font-size:19px}.project-bar p{font-size:11px}.tabs{gap:15px}.sheet-intro{align-items:flex-start}.sheet-intro h2{font-size:15px}.sheet-intro button{padding:8px}.sections{width:100px}.job-panel{right:12px;bottom:12px;width:calc(100% - 24px)}dialog{min-width:0;width:95vw}.edge-add{flex-wrap:wrap}footer{padding:15px;gap:12px}.header-actions .quiet{margin-left:auto}}