:root{color-scheme:light;--ink:#223840;--muted:#536b77;--accent:#245b70;--accent-soft:#eaf1f5;--line:#d6e2e8;--page:#f3f6f8;--surface:#fff;--radius:6px;font:14px/1.6 system-ui,-apple-system,'Segoe UI','Microsoft JhengHei',sans-serif;color:var(--ink);background:var(--page)}*{box-sizing:border-box}body{margin:0}::selection{background:#c9e1ec;color:#173744}button,input,select{font:inherit}button,a,input,select,summary{outline-offset:3px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,#viewport:focus-visible{outline:3px solid #528da5}button{padding:8px 13px;min-height:38px;border:1px solid var(--accent);border-radius:var(--radius);background:var(--accent);color:#fff;cursor:pointer;transition:background-color 160ms ease-out}button:hover{background:#1b4657}button:disabled{cursor:default;opacity:.5}.quiet-button,.view-buttons button{background:var(--surface);border-color:var(--line);color:var(--ink)}.quiet-button:hover,.view-buttons button:hover{background:var(--accent-soft)}.text-button{padding:5px 0;min-height:34px;border:0;background:none;color:var(--accent);text-align:left;text-decoration:underline;text-underline-offset:4px}.text-button:hover{background:none;color:#153c4d}input[type=search],select{width:100%;min-height:40px;padding:8px 10px;color:var(--ink);border:1px solid #b6cbd5;border-radius:var(--radius);background:var(--surface);caret-color:var(--accent)}input::placeholder{color:#617580}input[type=range]{accent-color:var(--accent);width:100%;margin:8px 0 0;min-height:24px;cursor:pointer}input[type=checkbox]{width:16px;height:16px;accent-color:var(--accent);flex-shrink:0;margin:0}a{color:var(--accent);text-underline-offset:4px}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}h1,h2,h3,p{margin:0}h1{font-size:19px;font-weight:650;line-height:1.3}h2{font-size:17px;line-height:1.5;overflow-wrap:anywhere;font-weight:650}h3{font-size:13px;font-weight:650;margin:22px 0 10px}p{overflow-wrap:anywhere}strong,output{font-variant-numeric:tabular-nums}button[hidden],[hidden]{display:none!important}.app-header{height:76px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:var(--surface);gap:16px}.brand{display:flex;align-items:center;gap:13px}.brand>svg{width:32px;height:32px;color:var(--accent)}.brand p{font-size:12px;color:var(--muted);margin-top:3px}.header-actions{display:flex;align-items:center;gap:18px}.model-status{font-size:12px;color:var(--muted)}.model-status::before{content:'';display:inline-block;width:7px;height:7px;border-radius:50%;background:#91a8b3;margin-right:7px}.model-status.ready::before{background:#39725d}.workspace{display:grid;grid-template-columns:260px minmax(240px,1fr) 320px;height:calc(100dvh - 76px);min-height:540px}.controls-pane,.info-pane{background:var(--surface);overflow-y:auto;scrollbar-width:thin;scrollbar-color:#a1b6c0 #fff}.controls-pane{border-right:1px solid var(--line)}.info-pane{border-left:1px solid var(--line)}.panel-section{border-bottom:1px solid var(--line)}.panel-section summary{font-weight:650;cursor:pointer;list-style:none;padding:18px 20px 12px;display:flex;align-items:center;justify-content:space-between}.panel-section summary::after{content:'';width:7px;height:7px;transform:rotate(45deg);border-bottom:1.5px solid var(--muted);border-right:1.5px solid var(--muted);margin-left:15px}.panel-section[open] summary::after{transform:rotate(225deg)}.section-content{padding:0 20px 20px}.field-label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}.check-row{display:flex;align-items:center;gap:9px;min-height:36px;font-size:13px;cursor:pointer}.check-row .category-count{margin-left:auto;color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}.subcheck{font-size:12px;line-height:1.5;margin:10px 0 20px}.range-heading{display:flex;justify-content:space-between;align-items:center;font-size:12px;margin-top:17px;gap:8px}.range-heading output{color:var(--accent);font-size:12px}.control-note{font-size:12px;color:var(--muted);line-height:1.7;margin-top:7px}.preset-buttons{display:flex;gap:8px;margin:3px 0 12px}.preset-buttons button{font-size:12px;padding:6px 10px}.category-list{display:grid;gap:2px}.unavailable{color:var(--muted);cursor:default;margin-top:5px}.small-tag{font-size:12px;background:var(--accent-soft);padding:1px 5px;border-radius:3px;margin-left:auto;color:var(--muted)}.source-note{padding:20px;font-size:12px;line-height:1.8;color:var(--muted)}.source-note p+p{margin-top:7px}.model-pane{min-width:0;position:relative;display:flex;flex-direction:column;background:#eaf0f3}.model-toolbar{height:58px;display:flex;align-items:center;justify-content:space-between;padding:8px 18px;gap:10px;border-bottom:1px solid var(--line);background:var(--page);flex-shrink:0}.view-buttons{display:flex;gap:5px}.view-buttons button{font-size:12px;padding:5px 10px;min-height:32px}.model-toolbar>span{font-size:12px;color:var(--muted);white-space:nowrap}.model-footer{height:44px;padding:8px 18px;display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--muted);font-size:12px;border-top:1px solid var(--line);background:var(--page);flex-shrink:0}.model-footer strong{font-size:13px;color:var(--ink)}#hidden-count{font-size:12px;margin-left:8px}#viewport{position:relative;flex:1;min-height:300px;touch-action:none;overflow:hidden}#viewport canvas{display:block;width:100%;height:100%}.loading-state,.empty-view{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:15px;padding:35px;text-align:center;font-size:13px;color:var(--muted);background:#eaf0f3;z-index:2}.loading-line{width:170px;height:3px;background:#d6e2e8;position:relative;overflow:hidden}.loading-line::after{content:'';position:absolute;width:70px;height:100%;background:var(--accent);animation:load 1.5s ease-in-out infinite}@keyframes load{from{transform:translateX(-70px)}to{transform:translateX(170px)}}.empty-view{background:transparent;pointer-events:none}.empty-view button{pointer-events:auto}.info-tabs{display:flex;position:sticky;top:0;background:var(--surface);z-index:3;border-bottom:1px solid var(--line)}.info-tabs button{flex:1;min-height:55px;border:0;border-radius:0;background:none;color:var(--muted);font-size:13px;position:relative;padding:12px 8px}.info-tabs button:hover{background:var(--page)}.info-tabs button[aria-selected=true]{color:var(--accent);font-weight:650}.info-tabs button[aria-selected=true]::after{content:'';position:absolute;bottom:0;left:20px;right:20px;height:2px;background:var(--accent)}.info-tabs span{font-size:12px;margin-left:3px}#element-panel,#materials-panel{padding:18px 20px 24px}.search-wrap{position:relative}.search-wrap>svg{position:absolute;left:10px;top:11px;width:17px;height:17px;color:var(--muted)}.search-wrap input{padding-left:35px;font-size:12px}.search-results{border-bottom:1px solid var(--line);max-height:240px;overflow-y:auto;margin:10px 0 20px}.search-results button{display:block;width:100%;min-height:46px;padding:10px 6px;border:0;border-radius:0;border-bottom:1px solid var(--line);background:none;color:var(--ink);text-align:left;font-size:12px;line-height:1.5;overflow-wrap:anywhere}.search-results button:hover{background:var(--accent-soft)}.search-results button span{display:block;color:var(--muted);font-size:12px;margin-top:3px}.search-results>p{font-size:12px;padding:12px 0;color:var(--muted)}.selection-empty{padding:35px 0 22px;color:var(--muted)}.selection-empty>svg{width:44px;height:44px;color:#8aa8b7;margin-bottom:15px}.selection-empty h2{color:var(--ink);font-size:17px;margin-bottom:8px}.selection-empty p{font-size:12px;line-height:1.8}.selection-empty .text-button{font-size:12px;margin-top:15px}#selection{padding-top:23px}.selection-kind{font-size:12px;color:var(--muted);margin:5px 0 18px}.detail-list{margin:0;display:grid;grid-template-columns:70px 1fr;gap:10px 9px;font-size:12px}.detail-list dt{color:var(--muted)}.detail-list dd{margin:0;overflow-wrap:anywhere}.material-item{margin-top:8px;display:flex;align-items:flex-start;gap:8px;font-size:13px}.material-item svg{width:16px;height:16px;color:var(--accent);margin-top:3px}.material-item button{border:0;border-radius:0;min-height:0;background:none;color:var(--accent);padding:0;text-align:left;font-size:12px;text-decoration:underline;text-underline-offset:3px}.missing-material{font-size:12px;line-height:1.8;padding:12px 0;color:var(--muted)}.layer-table{width:100%;border-collapse:collapse;font-size:12px}.layer-table th{font-size:12px;font-weight:500;color:var(--muted);text-align:left}.layer-table td,.layer-table th{padding:7px 0;border-bottom:1px solid var(--line)}.layer-table td:last-child,.layer-table th:last-child{text-align:right;font-variant-numeric:tabular-nums}.selection-actions{display:flex;gap:8px;margin:22px 0 7px}.selection-actions button{font-size:12px}.coverage-note{margin-top:28px;padding-top:18px;border-top:1px solid var(--line)}.coverage-note h3{margin:0 0 8px}.coverage-note p{font-size:12px;color:var(--muted);line-height:1.8}.coverage-note p+p{margin-top:7px}.material-help{margin:12px 0 16px}.material-list{margin-bottom:20px}.material-list button{display:flex;gap:10px;justify-content:space-between;align-items:flex-start;width:100%;padding:11px 3px;border:0;border-bottom:1px solid var(--line);border-radius:0;background:none;color:var(--ink);text-align:left;font-size:12px;line-height:1.55}.material-list button:hover{background:var(--page)}.material-list button.active{color:var(--accent);background:var(--accent-soft)}.material-list .material-label{overflow-wrap:anywhere}.material-list .material-label small{display:block;color:var(--muted);font-size:12px;margin-top:2px}.material-list .material-qty{font-variant-numeric:tabular-nums;white-space:nowrap;font-size:12px;color:var(--muted)}.material-list button:disabled{opacity:1;cursor:default}.download-link{display:flex;align-items:center;justify-content:space-between;font-size:12px;min-height:40px}.download-link svg{width:17px;height:17px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:1150px){.workspace{grid-template-columns:235px minmax(240px,1fr) 290px}.section-content,.source-note{padding-left:16px;padding-right:16px}.panel-section summary{padding-left:16px;padding-right:16px}.interaction-hint{display:none}#element-panel,#materials-panel{padding-left:16px;padding-right:16px}}@media(max-width:850px){.app-header{height:68px;padding:0 15px}.brand>svg{width:27px;height:27px}.brand{gap:9px}h1{font-size:17px}.brand p{font-size:12px}.header-actions{gap:9px}.model-status{font-size:12px}.header-actions button{font-size:12px;padding:5px 8px;min-height:34px}.workspace{height:auto;min-height:0;grid-template-columns:1fr;grid-template-areas:'model' 'controls' 'info'}.model-pane{grid-area:model;height:57dvh;min-height:390px}.controls-pane{grid-area:controls;overflow:visible;border-right:0;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr}.controls-pane .panel-section:first-child{grid-row:span 2;border-right:1px solid var(--line)}.controls-pane .source-note{grid-column:1/-1;padding:12px 16px;border-bottom:1px solid var(--line)}.source-note p:first-child{display:none}.source-note p+p{margin:0}.info-pane{grid-area:info;overflow:visible;border-left:0}.info-tabs{position:static}#element-panel,#materials-panel{max-width:720px;margin:auto}.model-toolbar{height:48px;padding:8px 12px}.model-footer{height:38px;padding:8px 12px}.panel-section summary{padding-top:15px;font-size:12px}.category-list .check-row{font-size:12px}.check-row .category-count{font-size:12px}.preset-buttons{flex-wrap:wrap}.selection-empty{padding:20px 0}.selection-empty>svg{display:none}.coverage-note{margin-top:20px}.view-buttons button{font-size:12px}.model-toolbar>span{font-size:12px}}@media(max-width:430px){.model-status{display:none}.controls-pane{grid-template-columns:1fr}.controls-pane .panel-section:first-child{grid-row:auto;border-right:0}.model-pane{height:55dvh;min-height:360px}.model-footer{font-size:12px}.model-footer strong{font-size:12px}.category-list{grid-template-columns:1fr 1fr;column-gap:15px}.section-content{padding-bottom:16px}.subcheck{margin-bottom:14px}.range-heading{margin-top:13px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}.loading-line::after{left:50px}}

.wall-parts{grid-column:1/-1;margin:0 0 10px 20px;padding:4px 0 8px 12px;border-left:1px solid var(--line)}.wall-parts .check-row{font-size:12px;min-height:34px}.wall-parts .control-note{margin:8px 0 0}

.render-stats{position:absolute;top:12px;right:12px;z-index:2;display:grid;gap:2px;padding:8px 12px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(255,255,255,.94);color:var(--muted);font-size:12px;line-height:1.5;pointer-events:none;font-variant-numeric:tabular-nums}.render-stats strong{color:var(--ink);font-size:16px;font-weight:600}