:root{color-scheme:dark;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;--bg: #16181d;--panel: #21252c;--panel-strong: #292f38;--line: #3a414d;--text: #f3f5f8;--muted: #9aa5b5;--accent: #54c6b1;--accent-strong: #7ddfcb;--danger: #f28a7a;--button: #323945;--button-hover: #3d4654;--canvas: #0f1115;--shadow: 0 18px 50px rgba(0, 0, 0, .28)}:root[data-theme=light]{color-scheme:light;--bg: #eef2f6;--panel: #ffffff;--panel-strong: #f5f7fa;--line: #cbd4df;--text: #17202b;--muted: #5d6b7c;--accent: #168f7c;--accent-strong: #0f7668;--danger: #b84a3d;--button: #ffffff;--button-hover: #e8edf3;--canvas: #f6f8fb;--shadow: 0 18px 42px rgba(42, 55, 74, .14)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;overflow:hidden;background:var(--bg);color:var(--text)}.content-body,.quote-body{overflow:auto}a{color:inherit}button,input,select{font:inherit}button{border:1px solid var(--line);border-radius:6px;background:var(--button);color:var(--text);cursor:pointer;min-height:36px;transition:background .14s ease,border-color .14s ease,color .14s ease}button:hover{background:var(--button-hover)}button:disabled{cursor:not-allowed;opacity:.55}.link-button{text-decoration:none}.app{display:grid;grid-template-rows:58px 1fr;height:100vh;min-height:540px}.topbar{display:flex;align-items:center;gap:16px;min-width:0;padding:0 18px;border-bottom:1px solid var(--line);background:#21252cf5}[data-theme=light] .topbar{background:#fffffff5}.brand{display:flex;flex:1 1 auto;align-items:center;gap:12px;min-width:0}.brand-link{text-decoration:none}.brand-mark{display:grid;flex:0 0 34px;width:34px;height:34px;place-items:center;border:1px solid rgba(84,198,177,.5);border-radius:8px;background:#183630;color:var(--accent-strong)}[data-theme=light] .brand-mark{background:#e7f6f3}.brand-copy{min-width:0}.brand-title{margin:0;overflow:hidden;font-size:15px;font-weight:700;line-height:1.2;text-overflow:ellipsis;white-space:nowrap}.brand-subtitle{margin:2px 0 0;overflow:hidden;color:var(--muted);font-size:12px;line-height:1.2;text-overflow:ellipsis;white-space:nowrap}.file-controls{display:flex;align-items:center;gap:10px}.site-nav{display:flex;flex:0 1 auto;align-items:center;gap:4px;min-width:0;overflow-x:auto}.site-nav a{flex:0 0 auto;padding:8px 10px;border:1px solid transparent;border-radius:6px;color:var(--muted);font-size:13px;font-weight:700;line-height:1;text-decoration:none}.site-nav a:hover,.site-nav a.active{border-color:#54c6b173;background:#54c6b11f;color:var(--text)}.file-input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.primary-button,.secondary-button,.export-button,.icon-button,.segmented button{display:inline-flex;align-items:center;justify-content:center}.primary-button,.secondary-button{gap:8px;min-width:104px;min-height:38px;padding:0 14px;font-weight:700}.primary-button{min-width:126px;border-color:#54c6b1a6;background:#1c4b43;color:#effffc}[data-theme=light] .primary-button{background:#147a6d;color:#fff}[data-theme=light] .primary-button:hover{background:#0f6a5f}.primary-button:hover{background:#23594f}.secondary-button{border-color:var(--line);background:var(--button);color:var(--text)}.secondary-button:hover{background:var(--button-hover)}.quote-page,.content-page{min-height:100vh;background:var(--bg)}.content-topbar .brand{flex:1 1 auto}.article-shell{width:min(1080px,calc(100% - 32px));margin:0 auto;padding:34px 0 42px}.article-header{display:grid;gap:12px;max-width:780px;margin-bottom:26px}.article-eyebrow{color:var(--accent-strong);font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.article-header h1{margin:0;font-size:clamp(34px,6vw,58px);line-height:1}.article-header p{margin:0;color:var(--muted);font-size:17px;line-height:1.6}.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:28px;align-items:start}.article-main{display:grid;gap:16px}.article-section,.article-aside{border:1px solid var(--line);border-radius:8px;background:var(--panel);box-shadow:var(--shadow)}.article-section{padding:22px}.article-section h2,.article-aside h2{margin:0 0 12px;font-size:15px;font-weight:800}.article-section p{margin:0;color:#d8dde5;font-size:15px;line-height:1.7}.article-section p+p{margin-top:12px}.article-aside{position:sticky;top:74px;display:grid;gap:8px;padding:16px}.article-aside a{padding:10px 0;border-top:1px solid var(--line);color:var(--accent-strong);font-size:14px;font-weight:700;text-decoration:none}.article-aside a:hover{color:var(--text)}.site-footer{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px max(18px,calc((100% - 1080px)/2));border-top:1px solid var(--line);background:var(--panel);color:var(--muted);font-size:13px}.site-footer div,.site-footer nav{display:flex;flex-wrap:wrap;gap:10px 16px}.site-footer strong{color:var(--text)}.site-footer a{color:var(--muted);text-decoration:none}.site-footer a:hover{color:var(--accent-strong)}.quote-shell{display:grid;gap:18px;width:min(1080px,calc(100% - 32px));margin:0 auto;padding:28px 0}.quote-summary,.quote-panel,.quote-empty{border:1px solid var(--line);border-radius:8px;background:var(--panel);box-shadow:var(--shadow)}.quote-summary{display:grid;gap:6px;padding:22px}.quote-label,.quote-muted,.quote-note{color:var(--muted);font-size:13px}.quote-summary strong{font-size:clamp(34px,6vw,58px);line-height:1}.quote-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.quote-panel{padding:18px}.quote-panel h2,.quote-empty h2{margin:0 0 14px;font-size:14px;font-weight:800;letter-spacing:.04em;text-transform:uppercase}.quote-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,auto);gap:12px;padding:11px 0;border-top:1px solid var(--line)}.quote-row span{color:var(--muted)}.quote-row strong{min-width:0;overflow-wrap:anywhere;text-align:right}.quote-note{margin:0;line-height:1.5}.quote-empty{display:grid;justify-items:center;gap:12px;padding:34px;text-align:center}.quote-empty svg{color:var(--accent-strong)}.quote-empty p{max-width:460px;margin:0;color:var(--muted);line-height:1.5}.export-button{gap:8px;width:100%;min-height:38px;padding:0 12px;border-color:#54c6b185;background:#1f3f3a;color:#effffc;font-weight:700}.export-button:hover{background:#245148}.export-button:disabled{border-color:var(--line);background:var(--button);color:var(--muted)}.shell{display:grid;grid-template-columns:minmax(0,1fr) 318px;min-height:0}.viewer-wrap{position:relative;min-width:0;min-height:0;background:var(--canvas)}#viewer{display:block;width:100%;height:100%;outline:none}.viewer-wrap.measure-mode #viewer{cursor:crosshair}.model-tabs{position:absolute;top:14px;right:14px;left:14px;z-index:2;display:flex;gap:7px;max-width:calc(100% - 28px);overflow-x:auto;padding:7px;border:1px solid rgba(255,255,255,.1);border-radius:8px;background:#16181dc7;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.model-tab{display:inline-flex;flex:0 0 auto;overflow:hidden;max-width:min(230px,62vw);border:1px solid var(--line);border-radius:7px;background:var(--button)}.model-tab.active{border-color:#54c6b1bf;background:#1c4b43;color:#effffc}.model-tab-button,.model-tab-close{min-height:32px;border:0;border-radius:0;background:transparent}.model-tab-button{display:block;min-width:96px;max-width:176px;overflow:hidden;padding:0 10px;color:inherit;font-size:13px;font-weight:700;text-overflow:ellipsis;white-space:nowrap}.model-tab-close{width:31px;padding:0;border-left:1px solid rgba(255,255,255,.14);color:var(--muted);font-size:14px;font-weight:800}.model-tab-close:hover,.model-tab-button:hover{background:#ffffff14}.viewer-toolbar{position:absolute;top:14px;left:14px;z-index:2;display:flex;flex-wrap:wrap;gap:8px;max-width:calc(100% - 28px);padding:8px;border:1px solid rgba(255,255,255,.1);border-radius:8px;background:#16181dc7;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}[data-theme=light] .viewer-toolbar,[data-theme=light] .model-tabs{border-color:#17202b1a;background:#ffffffd1}.viewer-wrap.has-model-tabs .viewer-toolbar{top:70px}.icon-button{width:38px;height:38px;padding:0}.icon-button.active{border-color:#54c6b1bf;background:#1c4b43;color:#effffc}[data-theme=light] .icon-button.active,[data-theme=light] .segmented button.active,[data-theme=light] .model-tab.active{background:#147a6d;color:#fff}.segmented{display:flex;overflow:hidden;border:1px solid var(--line);border-radius:7px;background:var(--button)}.segmented button{min-width:72px;min-height:38px;padding:0 11px;border:0;border-radius:0;background:transparent;color:var(--muted)}.segmented button+button{border-left:1px solid var(--line)}.segmented button.active{background:#1c4b43;color:#effffc}.drop-panel{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none}.drop-card{width:min(430px,calc(100% - 32px));padding:28px;border:1px dashed rgba(125,223,203,.52);border-radius:8px;background:#21252cd6;box-shadow:var(--shadow);text-align:center;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}[data-theme=light] .drop-card,[data-theme=light] .busy-card,[data-theme=light] .status{background:#ffffffe6}.drop-card svg{color:var(--accent-strong)}.drop-card h2{margin:14px 0 8px;font-size:20px;line-height:1.2}.drop-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.5}.drop-active .drop-card{border-color:var(--accent-strong);background:#1c4b43e0}[data-theme=light] .drop-active .drop-card{background:#e1f7f2f0}.busy{position:absolute;inset:0;display:none;place-items:center;padding:24px;background:#0f1115b8;color:var(--text);pointer-events:auto;z-index:5;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}[data-theme=light] .busy{background:#f6f8fbb8}.busy.visible{display:grid}.busy-card{display:inline-flex;align-items:center;gap:10px;max-width:min(460px,100%);padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:#21252cf0;box-shadow:var(--shadow);font-size:14px;font-weight:700}.spinner{display:inline-block;flex:0 0 auto;width:18px;height:18px;border:2px solid rgba(255,255,255,.22);border-top-color:var(--accent-strong);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.side-panel{display:grid;grid-template-rows:auto 1fr auto;min-height:0;border-left:1px solid var(--line);background:var(--panel)}.panel-section{padding:16px;border-bottom:1px solid var(--line)}.panel-section h2{margin:0 0 12px;font-size:13px;font-weight:800;letter-spacing:.04em;text-transform:uppercase}.stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.stat{min-width:0;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--panel-strong)}.stat-label{display:block;color:var(--muted);font-size:11px}.stat-value{display:block;margin-top:3px;overflow:hidden;font-size:18px;font-weight:800;line-height:1.15;text-overflow:ellipsis;white-space:nowrap}.parts{min-height:0;overflow:auto;padding:12px}.part-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;width:100%;min-height:42px;margin:0 0 7px;padding:8px 10px;border:1px solid var(--line);border-radius:7px;background:var(--panel-strong);text-align:left}.part-row:hover,.part-row.selected{border-color:#54c6b1bf;background:#253b3a}[data-theme=light] .part-row:hover,[data-theme=light] .part-row.selected{background:#e5f5f2}.assembly-row{margin-bottom:12px;border-color:#7ddfcb61}.part-name{overflow:hidden;font-weight:700;text-overflow:ellipsis;white-space:nowrap}.part-meta{color:var(--muted);font-size:12px}.panel-footer{padding:14px 16px;color:var(--muted);font-size:12px;line-height:1.45}.panel-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}.panel-links a{color:var(--accent-strong);font-weight:700;text-decoration:none}.panel-links a:hover{color:var(--text)}.control-stack{display:grid;gap:13px}.toggle-row,.unit-row,.range-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:center}.toggle-row span,.unit-row>span,.range-row span{min-width:0;color:var(--text);font-size:14px}.segmented.compact button{min-width:46px}.switch{position:relative;display:inline-block;width:42px;height:24px}.switch input{width:0;height:0;opacity:0}.slider{position:absolute;inset:0;border-radius:999px;background:#424a56;cursor:pointer}.slider:before{position:absolute;top:4px;left:4px;width:16px;height:16px;border-radius:50%;background:#fff;content:"";transition:transform .15s ease}.switch input:checked+.slider{background:#238775}.switch input:checked+.slider:before{transform:translate(18px)}.range-row input{width:126px;accent-color:var(--accent)}.status{position:absolute;right:14px;top:14px;max-width:min(420px,calc(100% - 28px));padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:#21252ceb;box-shadow:var(--shadow);color:var(--muted);font-size:13px;line-height:1.4}[data-theme=light] .status.error{color:#8f2f25}.status.error{border-color:#f28a7ab3;color:#ffd8d2}.hidden{display:none}@media(max-width:860px){body{overflow:auto}.app{height:auto;min-height:100vh;grid-template-rows:auto 1fr}.topbar{flex-wrap:wrap;padding:12px}.file-controls,.site-nav,.primary-button,.secondary-button{width:100%}.shell{grid-template-columns:1fr;grid-template-rows:minmax(430px,62vh) auto}.side-panel{border-top:1px solid var(--line);border-left:0}.parts{max-height:260px}.quote-grid,.article-grid{grid-template-columns:1fr}.article-aside{position:static}.site-footer{align-items:flex-start;flex-direction:column}}@media(max-width:560px){.viewer-toolbar{right:10px;left:10px}.segmented{width:100%}.segmented button{flex:1 1 0;min-width:0}.status{inset:auto 10px 10px;max-width:none}.quote-shell{width:min(100% - 20px,1080px);padding:16px 0}.quote-row{grid-template-columns:1fr;gap:4px}.quote-row strong{text-align:left}}