:root{--topbar-height:64px;--color-background:#f7f8fa;--color-surface:#fff;--color-surface-secondary:#f1f5f9;--color-surface-elevated:#fff;--color-border:#e5e7eb;--color-border-strong:#cbd5e1;--color-text:#111827;--color-text-secondary:#6b7280;--color-text-tertiary:#94a3b8;--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-primary-soft:#eff6ff;--color-success:#16a34a;--color-success-soft:#f0fdf4;--color-warning:#d97706;--color-warning-soft:#fffbeb;--color-danger:#dc2626;--color-danger-soft:#fef2f2;--color-rule:#8b5cf6;--color-rule-soft:#f5f3ff;--color-dimension:#7c3aed;--color-construction:#94a3b8;--color-editor:#fff;--color-grid:#dce3eb;--color-geometry:#111827;--color-selection:#2563eb;--color-overlay:#0f172a73;--color-topbar:#f7f8faf0;--shadow-xs:0 1px 2px #0f172a0a;--shadow-sm:0 4px 14px #0f172a0f;--shadow-md:0 16px 40px #0f172a1a;--radius-sm:8px;--radius-md:10px;--radius-lg:12px;--radius-xl:16px;--transition-fast:.12s cubic-bezier(.2, .8, .2, 1);--transition-base:.16s cubic-bezier(.2, .8, .2, 1);--transition-panel:.2s cubic-bezier(.2, .8, .2, 1);--ink:var(--color-text);--muted:var(--color-text-secondary);--line:var(--color-border);--surface:var(--color-surface);--canvas:var(--color-surface-secondary);--green:var(--color-primary);--green-dark:var(--color-primary-hover);--mint:var(--color-success-soft);--lime:var(--color-warning);--orange:var(--color-warning);--shadow:var(--shadow-sm)}:root[data-theme=dark]{--color-background:#111318;--color-surface:#1a1d24;--color-surface-secondary:#232730;--color-surface-elevated:#20242c;--color-border:#323843;--color-border-strong:#475569;--color-text:#f3f4f6;--color-text-secondary:#a1a1aa;--color-text-tertiary:#71717a;--color-primary:#60a5fa;--color-primary-hover:#93c5fd;--color-primary-soft:#172554;--color-success:#4ade80;--color-success-soft:#14291e;--color-warning:#f59e0b;--color-warning-soft:#30230f;--color-danger:#f87171;--color-danger-soft:#35191c;--color-rule:#a78bfa;--color-rule-soft:#2a2040;--color-dimension:#c4b5fd;--color-construction:#94a3b8;--color-editor:#181a1f;--color-grid:#37404d;--color-geometry:#f8fafc;--color-selection:#60a5fa;--color-overlay:#0000009e;--color-topbar:#111318f0;--shadow-xs:0 1px 2px #0000002e;--shadow-sm:0 5px 18px #00000038;--shadow-md:0 18px 48px #00000052}*{box-sizing:border-box}html,body{min-height:100%;margin:0}body{color:var(--ink);background:var(--color-background);-webkit-font-smoothing:antialiased;transition:color var(--transition-panel), background var(--transition-panel);font-family:Inter,Geist,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:14px}button,input,select,textarea{color:inherit;font:inherit}::selection{color:var(--color-text);background:color-mix(in srgb, var(--color-selection) 28%, transparent)}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}h1,h2,p{margin-top:0}h1{letter-spacing:-.045em;margin-bottom:8px;font-size:clamp(30px,4vw,50px);line-height:1.02}h2{letter-spacing:-.02em;margin-bottom:8px;font-size:19px}p{color:var(--muted);line-height:1.6}.topbar{z-index:20;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#f8f9f6f0;justify-content:space-between;align-items:center;height:72px;padding:0 4vw;display:flex;position:sticky;top:0}.brand{align-items:center;gap:11px;font-size:17px;font-weight:750;display:flex}.brand small{color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin-top:1px;font-size:9px;font-weight:650;display:block}.brand-mark{color:#fff;background:var(--green);border-radius:9px;place-items:center;width:34px;height:34px;font-family:Georgia,serif;font-size:20px;font-style:italic;display:grid}.topbar nav{align-items:center;gap:6px;display:flex}.topbar nav>a,.nav-menu>summary{color:#3d4942;border-radius:8px;padding:10px 14px;font-weight:620}.topbar nav>a:hover,.nav-menu>summary:hover{background:#edf0eb}.nav-menu{position:relative}.nav-menu>summary{cursor:pointer;align-items:center;gap:7px;list-style:none;display:flex}.nav-menu>summary::-webkit-details-marker{display:none}.nav-menu>summary span{color:var(--muted);font-size:11px}.nav-menu-panel{z-index:40;border:1px solid var(--line);visibility:hidden;opacity:0;pointer-events:none;background:#fff;border-radius:11px;gap:4px;width:280px;padding:7px;transition:opacity .12s,transform .12s,visibility .12s;display:grid;position:absolute;top:calc(100% - 1px);left:0;transform:translateY(-4px);box-shadow:0 14px 36px #17211c29}.nav-menu:after{content:"";width:100%;height:10px;position:absolute;top:100%;left:0}.nav-menu:hover .nav-menu-panel{visibility:visible;opacity:1;pointer-events:auto;transform:translateY(0)}.nav-menu-panel a{border-radius:8px;flex-direction:column;gap:3px;padding:11px 12px;display:flex}.nav-menu-panel a:hover{background:#f0f4ef}.nav-menu-panel strong{font-size:12px}.nav-menu-panel small{color:var(--muted);font-size:9px}.page{width:min(1180px,92vw);margin:0 auto;padding:58px 0 72px}.page-heading{justify-content:space-between;align-items:flex-end;margin-bottom:34px;display:flex}.page-heading h1{font-size:42px}.page-heading p{margin-bottom:0;font-size:16px}.eyebrow{color:var(--green);letter-spacing:.14em;margin-bottom:9px;font-size:10px;font-weight:800;display:block}.button{cursor:pointer;border:1px solid #0000;border-radius:9px;justify-content:center;align-items:center;gap:8px;min-height:42px;padding:9px 17px;font-weight:720;transition:all .16s;display:inline-flex}.button:hover:not(:disabled){transform:translateY(-1px)}.button:disabled,.button.disabled{cursor:not-allowed;opacity:.45}.button.primary{color:#fff;background:var(--green);box-shadow:0 6px 18px #21634c2e}.button.primary:hover:not(:disabled){background:var(--green-dark)}.button.secondary{border-color:var(--line);background:#fff}.button.danger{color:#a53d27;background:#fff5f2;border-color:#e4b1a5}.button.danger:hover:not(:disabled){background:#ffe9e3}.button.full{width:100%}.editor-step-nav{color:var(--muted);flex-wrap:wrap;gap:8px;font-size:12px;font-weight:700;display:flex}.editor-step-nav span{border-bottom:2px solid #0000;padding:8px 10px}.editor-step-nav .active{color:var(--green);border-color:var(--green)}.back-link{color:var(--green);margin-bottom:18px;font-weight:700;display:inline-block}.product-create-card{max-width:560px}.product-editor-sketch{border:1px solid var(--line);box-shadow:var(--shadow);background:#fff;border-radius:16px;padding:18px}.editor-toolbar{flex-wrap:wrap;align-items:center;gap:7px;margin-bottom:10px;display:flex}.drawing-tools{border-bottom:1px solid var(--line);padding-bottom:12px}.tool-section-label{color:var(--green);letter-spacing:.12em;text-transform:uppercase;margin-right:3px;font-size:11px;font-weight:800}.editor-toolbar .button{min-height:34px;padding:7px 11px;font-size:12px}.toolbar-spacer{flex:1}.preset-toolbar{border-top:1px solid var(--line);color:var(--muted);padding-top:10px;font-size:12px}.sketch-editor-layout{grid-template-columns:minmax(0,1fr) 250px;gap:14px;display:grid}.sketch-canvas-wrap{border:1px solid var(--line);background:#f7faf6;border-radius:12px;min-height:570px;overflow:hidden}.sketch-canvas{cursor:crosshair;outline:none;width:100%;height:570px;display:block}.sketch-entity{fill:none;stroke:#23654e;stroke-width:3px;vector-effect:non-scaling-stroke;cursor:pointer}.sketch-entity:hover,.sketch-entity.selected{stroke:#7b43a7;stroke-width:5px}.sketch-preview{fill:none;stroke:#7b43a7;stroke-width:3px;stroke-dasharray:8 5;vector-effect:non-scaling-stroke;pointer-events:none;opacity:.95}.snap-indicator{fill:#e76f42;stroke:#fff;stroke-width:2px;vector-effect:non-scaling-stroke}.canvas-help{border-top:1px solid var(--line);margin:0;padding:8px 12px;font-size:11px}.sketch-inspector{border:1px solid var(--line);background:#fbfcfa;border-radius:12px;padding:16px}.sketch-inspector h2{margin-bottom:4px}.inspector-card{background:#fff;border-radius:9px;gap:8px;margin-top:16px;padding:12px;display:grid}.inspector-card span{color:var(--muted);font-family:ui-monospace,monospace;font-size:11px}.inspector-card input{width:100%;margin-top:4px}.success-message{color:var(--green-dark);background:var(--mint);border-radius:8px;margin-top:10px;padding:10px}.drawing-empty-state{color:var(--green-dark);background:#f2f8f2;border:1px dashed #b7c9bd;border-radius:10px;gap:6px;margin-top:18px;padding:14px;display:grid}.drawing-empty-state span{color:var(--muted);font-size:12px;line-height:1.5}.joined-contours{background:#f2f8f2;border-radius:8px;gap:5px;margin-top:14px;padding:10px;display:grid}.joined-contours span{color:var(--muted);font-size:11px}.product-parameters-panel{border:1px solid var(--line);background:#fff;border-radius:16px;margin-top:16px;padding:18px}.parameter-usage-list{gap:7px;display:grid}.parameter-usage-row{border:1px solid var(--line);border-radius:8px;grid-template-columns:1fr 1fr 2fr;align-items:center;gap:10px;padding:10px 12px;display:grid}.parameter-usage-row span,.parameter-usage-row small{color:var(--muted)}.inline-form{gap:8px;margin-top:12px;display:flex}.inline-form input{flex:1}@media (max-width:720px){.parameter-usage-row{grid-template-columns:1fr}.inline-form{flex-direction:column}}@media (max-width:820px){.sketch-editor-layout{grid-template-columns:1fr}.editor-step-nav{margin-top:16px}.topbar{flex-direction:column;align-items:flex-start;gap:12px;height:auto;min-height:72px;padding:12px 4vw}.topbar nav{flex-wrap:wrap}}.cad-product-page{width:min(1680px,98vw);padding-top:22px}.cad-product-heading{justify-content:space-between;align-items:flex-end;margin-bottom:16px;display:flex}.cad-product-heading h1{margin-bottom:4px;font-size:30px}.cad-product-heading p{margin:0}.cad-product-heading .back-link{margin-bottom:10px}.cad-editor-shell{background:#eef2ef;border:1px solid #cfd8d2;border-radius:14px;overflow:hidden;box-shadow:0 20px 50px #10251b1f}.cad-editor-header{background:linear-gradient(#fff,#f2f5f3);border-bottom:1px solid #cad4cd;align-items:stretch;gap:6px;min-height:70px;padding:7px 9px;display:flex}.cad-tool-group{border-right:1px solid #d7ded9;align-items:flex-end;gap:3px;padding:2px 9px 2px 6px;display:flex}.cad-tool-group button{color:#34473d;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:7px;place-items:center;gap:1px;min-width:52px;height:52px;padding:4px 6px;font-size:21px;display:grid}.cad-tool-group button:hover,.cad-tool-group button.active{color:#154d39;background:#e3efe8;border-color:#9db9aa}.cad-tool-group button:disabled{cursor:not-allowed;opacity:.32}.cad-tool-group button small{font-size:9px;font-weight:700}.cad-group-label{color:#738078;letter-spacing:.1em;text-transform:uppercase;writing-mode:vertical-rl;align-self:flex-start;margin:4px 4px 0 0;font-size:8px;font-weight:800}.cad-history{margin-left:auto}.cad-save{color:#fff;background:var(--green);cursor:pointer;border:0;border-radius:8px;align-self:center;min-height:42px;margin:0 5px;padding:0 16px;font-weight:750}.cad-save-wrap{flex-direction:column;justify-content:center;align-items:center;gap:2px;min-width:340px;display:flex}.cad-save-actions{justify-content:center;align-items:center;gap:8px;display:flex}.cad-save.saving{cursor:wait;opacity:.7}.cad-save.saved{background:#23835c}.cad-save.error{background:#a43d2e}.cad-save-feedback{max-width:180px;min-height:14px;color:var(--muted);text-align:center;font-size:10px;line-height:1.15}.cad-save-feedback.dirty{color:#8a6222}.cad-save-feedback.saved{color:#1d704e}.cad-save-feedback.error{color:#9a3427}.product-list-card{padding:0;display:flex;overflow:visible}.product-card-link{min-width:0;color:inherit;flex:1;align-items:center;gap:14px;padding:16px;text-decoration:none;display:flex}.product-list-card>.button.danger{align-self:center;margin-right:14px}.variant-configurator{grid-template-columns:minmax(0,1fr) 340px;align-items:start;gap:18px;display:grid}.variant-preview-card,.variant-dimensions-panel{border:1px solid var(--border);background:#fff;border-radius:14px;box-shadow:0 10px 30px #21362b0d}.variant-preview-card{padding:16px}.variant-preview-heading{justify-content:space-between;align-items:center;gap:16px;display:flex}.variant-preview-heading h2,.variant-dimensions-panel h2{margin:3px 0 0}.variant-preview-heading>span{color:var(--muted);font-size:12px}.variant-sketch-preview{background-color:#fbfcfa;background-image:radial-gradient(#d6ddd8 1px,#0000 1px);background-size:16px 16px;border:1px solid #dfe6e1;border-radius:10px;width:100%;min-height:520px;margin-top:14px;display:block}.variant-preview-entity{fill:none;stroke:#244c3d;stroke-width:2.5px;vector-effect:non-scaling-stroke;transition:stroke .15s,stroke-width .15s}.variant-preview-entity.active{stroke:#8b4bc3;stroke-width:5px}.variant-preview-summary{flex-wrap:wrap;gap:8px;padding-top:12px;display:flex}.variant-preview-summary span{color:#486055;background:#edf3ef;border-radius:999px;padding:6px 9px;font-size:11px}.variant-dimensions-panel{padding:18px}.variant-dimensions-panel>p{color:var(--muted);font-size:13px}.variant-line-fields{gap:9px;margin-top:16px;display:grid}.variant-line-fields>label{border:1px solid #e0e7e2;border-radius:9px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:10px;transition:border-color .15s,background .15s;display:flex}.variant-line-fields>label:hover,.variant-line-fields>label:focus-within{background:#faf7fc;border-color:#9d74bd}.variant-line-fields>label.has-conflict{background:#fff8f6;border-color:#d78d7f}.variant-line-fields>label>span:first-child{align-items:center;gap:8px;min-width:0;font-size:13px;font-weight:650;display:flex}.variant-line-fields>label b{color:#fff;background:#527264;border-radius:50%;place-items:center;width:22px;height:22px;font-size:10px;display:grid}.variant-value-input{align-items:center;gap:6px;display:flex}.variant-value-input input{text-align:right;width:105px;font:inherit;border:1px solid #ccd7d0;border-radius:7px;padding:8px;font-weight:700}.variant-value-input small{color:var(--muted)}.variant-field-warning{color:#9a4035;width:100%;font-size:10px}.variant-field-derived{color:#47725f;width:100%;font-size:10px}.variant-success{background:#e2f3e9;border-radius:8px;padding:10px;font-weight:650;color:#176143!important}.rectangle-link-status{color:#1d6548;cursor:pointer;text-align:left;background:#edf7f1;border:1px solid #bdd7c8;border-radius:8px;justify-content:space-between;align-items:center;gap:10px;width:100%;margin:12px 0;padding:10px;font-weight:700;display:flex}.rectangle-link-status small{color:#63776d;font-weight:600}.rectangle-found-dialog{max-width:470px}.rectangle-link-checkbox{cursor:pointer;background:#f7faf8;border:1px solid #d5e2da;border-radius:10px;align-items:flex-start;gap:11px;margin-top:16px;padding:14px;display:flex}.rectangle-link-checkbox input{width:19px;height:19px;accent-color:var(--green);margin-top:1px}.rectangle-link-checkbox span{gap:3px;display:grid}.rectangle-link-checkbox small{color:var(--muted)}.cad-grip.point-selected{fill:#8d48bd;stroke:#fff;stroke-width:3px}.relationship-marker{pointer-events:none}.relationship-marker circle{fill:#8b4bc3;stroke:#fff;stroke-width:2px;vector-effect:non-scaling-stroke}.relationship-marker text{fill:#fff;text-anchor:middle;vector-effect:non-scaling-stroke;font-weight:800}.smart-connect-card{background:#edf6f0;border:1px solid #c9ddd1;border-radius:10px;gap:6px;margin-top:15px;padding:13px;display:grid}.smart-connect-card.complete{background:#f2f5f3;border-color:#cbd7cf}.smart-connect-card>span{color:var(--muted);font-size:12px}.smart-connect-card>button{color:#fff;background:var(--green);cursor:pointer;border:0;border-radius:7px;margin-top:4px;padding:9px 11px;font-weight:800}.smart-connect-card>button:disabled{color:#66746c;cursor:default;background:#dfe6e1}.relationship-manual-hint{color:var(--muted);margin-top:13px;display:block}.relationship-actions{gap:7px;margin-top:15px;display:grid}.relationship-actions>button{color:#263d34;cursor:pointer;text-align:left;background:#fff;border:1px solid #dce4df;border-radius:8px;align-items:center;gap:10px;padding:10px;display:flex}.relationship-actions>button:hover:not(:disabled){background:#faf7fc;border-color:#9670b4}.relationship-actions>button:disabled{cursor:not-allowed;opacity:.42}.relationship-actions>button>span{gap:2px;display:grid}.relationship-actions>button>span small{color:var(--muted)}.relationship-list{border-top:1px solid #dde5df;gap:7px;margin-top:18px;padding-top:14px;display:grid}.relationship-list>small{color:var(--muted)}.relationship-list>div{background:#f1f5f2;border-radius:7px;justify-content:space-between;align-items:center;gap:8px;padding:8px;font-size:12px;display:flex}.relationship-list>div span{gap:2px;display:grid}.relationship-list>div span small{color:var(--muted);font-size:9px}.relationship-list>div button{color:#7b352c;cursor:pointer;background:#f5dfdc;border:0;border-radius:50%;width:24px;height:24px}.relationship-input-dialog>label{gap:7px;margin-top:14px;font-weight:700;display:grid}.relationship-dialog-input{align-items:center;gap:8px;display:flex}.relationship-dialog-input input{min-width:0;font:inherit;border:1px solid #cbd7cf;border-radius:8px;flex:1;padding:10px}.relationship-dialog-input small{color:var(--muted)}@media (max-width:900px){.variant-configurator{grid-template-columns:1fr}.variant-dimensions-panel{order:-1}.variant-sketch-preview{min-height:380px}}.cad-workspace{grid-template-columns:minmax(0,1fr) 270px;height:min(72vh,780px);min-height:580px;display:grid}.cad-canvas-wrap{background:#fbfcfa;min-width:0;position:relative;overflow:hidden}.cad-canvas{cursor:none;touch-action:none;outline:none;width:100%;height:100%;display:block}.cad-canvas-bg{stroke:none}.cad-entity{fill:none;stroke:#263c31;stroke-width:2px;vector-effect:non-scaling-stroke;pointer-events:stroke}.cad-entity:hover,.cad-entity.selected{stroke:#0d78bd;stroke-width:4px}.cad-preview{fill:#0d78bd0d;stroke:#0d78bd;stroke-width:2.5px;stroke-dasharray:8 5;vector-effect:non-scaling-stroke;pointer-events:none}.cad-grip{fill:#0d78bd;stroke:#fff;stroke-width:2px;vector-effect:non-scaling-stroke;cursor:move}.cad-crosshair{stroke:#23413273;stroke-width:1px;stroke-dasharray:2 2;vector-effect:non-scaling-stroke;pointer-events:none}.snap-symbol rect{fill:#fffc;stroke:#e86827;stroke-width:2px;vector-effect:non-scaling-stroke;pointer-events:none}.cad-selection-window{fill:#1970c11a;stroke:#1970c1;stroke-width:1px;vector-effect:non-scaling-stroke;pointer-events:none}.cad-selection-window.crossing{fill:#36964b1f;stroke:#36964b;stroke-dasharray:6 4}.smart-dimension{cursor:text}.smart-dimension line{stroke:#764294;stroke-width:1.1px;vector-effect:non-scaling-stroke}.smart-dimension text{fill:#693883;text-anchor:middle;paint-order:stroke;stroke:#fbfcfa;stroke-width:4px;vector-effect:non-scaling-stroke;font-weight:750}.cad-coordinates{color:#405148;pointer-events:none;background:#ffffffe6;border:1px solid #c2cdc6cc;border-radius:5px;padding:6px 9px;font:11px ui-monospace,SFMono-Regular,Menlo,monospace;position:absolute;top:10px;left:12px}.dynamic-input{z-index:5;pointer-events:none;background:#fffffff5;border:1px solid #9fb5a9;border-radius:7px;gap:4px;width:190px;padding:8px;display:grid;position:absolute;box-shadow:0 8px 20px #0e271b29}.dynamic-input label{border:1px solid #0000;border-radius:4px;justify-content:space-between;padding:4px 6px;font-size:11px;display:flex}.dynamic-input label.active{color:#075f96;background:#edf7fd;border-color:#0d78bd}.dynamic-input small{color:var(--muted);font-size:9px}.dimension-editor{z-index:7;background:#fff;border:1px solid #71438b;border-radius:9px;gap:8px;width:240px;padding:14px;display:grid;position:absolute;top:55px;right:18px;box-shadow:0 14px 36px #2c173833}.dimension-editor label{align-items:center;gap:7px;display:flex}.dimension-editor input{width:100%;min-width:0;font-size:18px;font-weight:750}.dimension-editor span{color:var(--muted);font-size:10px}.cad-context-menu{z-index:50;background:#fff;border:1px solid #cbd4ce;border-radius:8px;min-width:170px;padding:5px;display:grid;position:fixed;box-shadow:0 14px 36px #14261d33}.cad-context-menu 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