@font-face{font-family:Roboto;src:url(../brand/roboto-latin.woff2) format("woff2");font-style:normal;font-weight:100 900;font-display:swap}@font-face{font-family:Roboto Slab;src:url(../brand/roboto-slab-latin.woff2) format("woff2");font-style:normal;font-weight:300 900;font-display:swap}:root{font-family:Roboto,Arial,sans-serif;font-size:16px;font-synthesis:none;--ink:#3a2a14;--ink-soft:#5a4a36;--muted:#6b5f52;--bone:#faf8f5;--warm:#f3efe8;--line:#ddd5c8;--line-card:#d3c8b4;--moss:#e0a82e;--accent:#4e9a1e;--accent-hover:#3d7a12;--accent-soft:#edf5e6;--panel:#fff;--danger:#943a20;color:var(--ink);background:#fff}body,button,input,select{font-family:Roboto,Arial,sans-serif}h1,h2,.brand-app-name{font-family:Roboto Slab,Georgia,serif}*{box-sizing:border-box}html,body{height:100%}html{touch-action:manipulation}:root{--safe-l:env(safe-area-inset-left,0px);--safe-r:env(safe-area-inset-right,0px);--safe-b:env(safe-area-inset-bottom,0px);--buy:#6b5d36;--buy-bg:#efeadb;--kit:#7a5200;--kit-bg:#fbf0d9;--kitcut:#3d7a12;--kitcut-bg:#edf5e6;--panel-w:420px;--sup-buy:#cfc4a6;--sup-kit:#e0a82e;--sup-kitcut:#5aa62a;--sup-existing:#d5d2cc}body{margin:0;overflow:hidden;background:#fff;color:var(--ink);-webkit-font-smoothing:antialiased}#app{height:100vh;height:100dvh;display:flex;flex-direction:column}button,input{font:inherit;color:inherit}button{cursor:pointer;border:0;background:none;padding:0;transition:background .16s,color .16s,border-color .16s}button:disabled{opacity:.38;cursor:default}button,a,input,label,summary{-webkit-tap-highlight-color:transparent}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}svg{width:20px;height:20px;flex-shrink:0}img{display:block;max-width:100%}h1,h2,h3,p,ol,ul,dl,figure{margin:0}[hidden]{display:none!important}a{color:var(--accent-hover)}.eyebrow{font-size:12px;line-height:1.5;letter-spacing:.12em;text-transform:uppercase;font-weight:500;color:var(--muted)}.fine{font-size:13px;line-height:1.55;color:var(--muted)}.nw{white-space:nowrap}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.button{min-height:48px;padding:10px 16px;border:1px solid transparent;border-radius:0;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:13px;font-weight:500;line-height:1.2;letter-spacing:.14em;text-transform:uppercase;text-decoration:none;white-space:nowrap}.button svg{width:18px;height:18px}.button.small{min-height:40px;padding:6px 10px;font-size:12px;letter-spacing:.14em;gap:6px}.button.small svg{width:16px;height:16px}.button.wide{width:100%}.primary{background:var(--accent);border-color:var(--accent);color:#fff}.secondary{background:#fff;border-color:var(--line-card);color:var(--ink)}.icon-button{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;color:var(--ink);flex-shrink:0}.text-link{display:inline-flex;align-items:center;gap:7px;min-height:44px;font-size:14px;font-weight:500;color:var(--accent-hover);text-decoration:none;text-align:left}.text-link svg{width:16px;height:16px}.text-link.inline{display:inline;min-height:0;padding:0;font-size:inherit;text-decoration:underline;text-underline-offset:3px}@media(hover:hover){.primary:not(:disabled):hover{background:var(--accent-hover);border-color:var(--accent-hover)}.secondary:not(:disabled):hover{background:var(--bone);border-color:#b9ac97}.icon-button:not(:disabled):hover{background:var(--warm)}.text-link:hover{text-decoration:underline;text-underline-offset:4px}}.topbar{height:64px;flex:none;display:flex;align-items:center;gap:14px;padding:0 20px;padding-left:max(20px,var(--safe-l));padding-right:max(20px,var(--safe-r));background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:30}.brand{display:flex;align-items:center;min-height:44px;flex-shrink:0}.brand-logo{width:64px;height:49px;object-fit:contain}.brand-app-name{font-size:19px;font-weight:500;white-space:nowrap;padding-left:14px;border-left:1px solid var(--line);display:flex;align-items:center;gap:8px}.beta{font:600 12px/1 Roboto,Arial,sans-serif;letter-spacing:.1em;text-transform:uppercase;background:var(--moss);color:var(--ink);padding:4px 6px}.model-button{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 10px 0 6px;border:1px solid var(--line-card);margin-left:6px;font-size:15px;font-weight:500;min-width:0}.model-thumb img{width:40px;height:30px;object-fit:contain;background:#fff}.model-button small{font-size:13px;font-weight:400;color:var(--muted);margin-left:2px}.model-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.model-button svg{width:16px;height:16px;color:var(--muted)}@media(hover:hover){.model-button:hover{border-color:var(--accent)}}.top-links{margin-left:auto;display:flex;align-items:center;gap:18px}.top-links .call-link{color:var(--ink-soft);font-weight:400;min-width:44px;justify-content:center}.workspace{flex:1;min-height:0;display:flex;position:relative}.stage{flex:1;min-width:0;position:relative;overflow:hidden;isolation:isolate;background:var(--bone)}.canvas3d{position:absolute;inset:0}.canvas3d>canvas{display:block;width:100%;height:100%;touch-action:none;outline:none}.plan-host{position:absolute;inset:72px 16px 92px;display:flex;flex-direction:column;cursor:zoom-in}.plan-svg{flex:1;min-height:0;display:flex;align-items:center;justify-content:center}.plan-svg svg.plan2d{width:100%;height:100%;display:block}.plan-cap{flex:none;font-size:12.5px;line-height:1.4;color:var(--ink-soft);text-align:center;padding:4px 4px 0}.plan2d .hot{animation:hot 1.6s ease-in-out 2}@keyframes hot{50%{fill-opacity:.55}}@media(prefers-reduced-motion:reduce){.plan2d .hot{animation:none}*{scroll-behavior:auto!important}}.view-tabs{position:absolute;top:16px;left:16px;display:flex;gap:2px;padding:3px;background:#fffffff2;border:1px solid var(--line);z-index:6}.view-button{display:inline-flex;align-items:center;gap:6px;min-height:40px;padding:6px 14px;font-size:13px;font-weight:500;color:var(--muted)}.view-button svg{width:16px;height:16px}.view-button.active{background:var(--ink);color:#fff}@media(hover:hover){.view-button:not(.active):hover{background:var(--warm);color:var(--ink)}}.stage-tools{position:absolute;top:16px;right:16px;display:flex;gap:2px;padding:3px;background:#fffffff2;border:1px solid var(--line);z-index:6}.tool-button{display:inline-flex;align-items:center;gap:6px;min-height:40px;padding:6px 12px;font-size:13px;font-weight:500;color:var(--muted)}.tool-button svg{width:16px;height:16px}.tool-button[aria-pressed=true]{color:var(--ink);background:var(--warm)}@media(hover:hover){.tool-button:hover{background:var(--warm);color:var(--ink)}}@media(pointer:coarse){.view-button,.tool-button,.segc-b{min-height:44px}.text-link.inline,.panel-foot .fine a{padding:12px 4px;margin:-12px -4px}}.step-strip{position:absolute;left:16px;right:16px;bottom:16px;margin-inline:auto;width:min(560px,calc(100% - 32px));display:flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 28px #3a2a1414;padding:4px;z-index:6}.strip-text{flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;text-align:center;padding:2px 4px}.strip-text strong{font:500 15px/1.3 Roboto 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4px;font-size:13px}.kg-note{color:var(--muted)}.kg-v{margin-left:auto;font-weight:600;color:var(--ink)}.krow{display:grid;grid-template-columns:22px 1fr auto;align-items:center;gap:8px;width:100%;min-height:32px;padding:3px 12px;text-align:left;font-size:14px;line-height:1.3;color:var(--ink)}.krow .kc{font-size:13px;color:var(--muted);white-space:nowrap}.ksw{display:block;width:22px;height:14px;border:1px solid #0002}.ksw.is-hatch{display:inline-block;vertical-align:-2px;margin-right:6px;background:repeating-linear-gradient(45deg,#b9ac97 0 3px,#fff 3px 6px)}.krow.is-later .ksw{opacity:.4}.krow.is-later .kc{color:var(--muted)}.krow:focus-visible,.kseg .segc-b:focus-visible{outline-offset:-2px}.krow.is-now .kl:after{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-left:6px;vertical-align:2px}.krow.is-pinned{background:var(--accent-soft);box-shadow:inset 3px 0 0 var(--accent)}.krow.is-hit{background:var(--kit-bg);box-shadow:inset 3px 0 0 var(--moss)}.krow.is-nd .kl{color:var(--ink-soft)}@media(hover:hover){.krow:not(.is-nd):hover{background:var(--bone)}.krow.is-pinned:hover{background:var(--accent-soft)}}@media(pointer:coarse){.krow{min-height:44px}}.stage.is-2d .krow{cursor:pointer}.kfine{font-size:13px;line-height:1.45;color:var(--ink-soft);padding:6px 12px 2px}.kfoot{flex:none;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:2px 4px 2px 12px;border-top:1px solid var(--line);margin-top:6px;font-size:12.5px;color:var(--muted)}.key>.kfoot{margin-top:0;background:#fff}.kfoot .text-link{font-size:13.5px;padding-right:8px}.klegend{display:flex;flex-wrap:wrap;gap:2px 12px;align-items:center}.know{display:inline-flex;align-items:center;gap:6px}.kdot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent)}.key-pill{position:absolute;left:16px;bottom:84px;display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:6px 14px 6px 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var(--line);border-left:3px solid var(--buy);padding:4px 9px;font-size:13px;font-weight:500;line-height:1.35;color:var(--ink);box-shadow:0 4px 14px #3a2a1418}.callout--left .callout__t{left:auto;right:20px}.callout--kit{border-color:var(--moss)}.callout--kit .callout__t{border-left-color:var(--moss)}.callout--kitcut .callout__t{border-left-color:var(--kitcut)}.callout--buy{border-color:var(--buy)}.part-chip{position:absolute;top:72px;right:16px;max-width:min(380px,calc(100% - 32px));display:flex;align-items:flex-start;gap:4px;background:#fff;border:1px solid var(--line);border-left:3px solid var(--moss);padding:10px 4px 10px 14px;box-shadow:0 8px 28px #3a2a1414;z-index:8}.chip-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px;align-items:flex-start}.chip-main strong{font-size:15px;font-weight:500}.chip-main span:last-child{font-size:13px;line-height:1.45;color:var(--muted)}.chip-close{margin-top:-6px}.inset{position:absolute;top:72px;right:16px;width:min(372px,46%);background:#fff;border:1px solid var(--line);border-left:3px solid var(--accent);box-shadow:0 8px 28px #3a2a1414;padding:10px 12px;z-index:7;margin:0}.inset-t{font:500 13px/1.4 Roboto,sans-serif;margin-bottom:4px}.mini-bar{position:absolute;inset:0;display:flex;align-items:center;gap:10px;padding:0 8px;background:#fff;z-index:12}.mini-art img{width:52px;height:34px;object-fit:contain}.mini-t{flex:1;min-width:0;font-size:13px;color:var(--ink-soft);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.overlay{position:absolute;inset:0;display:grid;place-items:center;padding:16px;background:#faf8f5eb;z-index:20;overflow:auto}.overlay:empty{display:none}.card{width:min(440px,100%);display:flex;flex-direction:column;gap:10px;background:#fff;border:1px solid var(--line);padding:22px 20px}.card h2{font:500 21px/1.3 Roboto 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table{width:100%;border-collapse:collapse;font-size:14px}.compare th,.compare td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:middle}.compare thead th{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:500}.compare tbody th{font-weight:500}.compare tr.is-on{background:var(--kitcut-bg)}.compare td.pick{text-align:right}.compare td.pick .button{min-height:44px;padding:8px 14px}.cmp-art{display:block;width:150px;margin-bottom:4px}.cmp-art img{width:150px;height:auto}.cmp-name{display:block;font-size:15px;line-height:1.3}.cmp-rec{display:inline-block;background:var(--accent-hover);color:#fff;font:600 12px/1 Roboto,Arial,sans-serif;letter-spacing:.08em;text-transform:uppercase;padding:4px 6px;margin-left:4px;vertical-align:2px}.src-desc{display:flex;flex-direction:column;gap:8px;font-size:14.5px;line-height:1.55;color:var(--ink-soft)}.src-desc 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