:root{--bg:#f4f4f5;--surface:#fff;--text:#18181b;--muted:#52525b;--subtle:#63636b;--line:#e4e4e7;--line-strong:#d4d4d8;--accent:#7c3aed;--accent-hover:#6d28d9;--accent-soft:#f5f3ff;--ring:0 0 0 3px #7c3aed40;--font:Inter, system-ui, -apple-system, "Segoe UI", sans-serif}*{box-sizing:border-box;margin:0;padding:0}html{background:var(--bg)}body{background-color:var(--bg);min-height:100vh;color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;background-image:radial-gradient(circle,#d4d4d8 1px,#0000 1.2px);background-size:16px 16px;font-size:14px;line-height:1.55;overflow-x:hidden}a{color:inherit}button,input,select{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.page{max-width:1240px;margin:0 auto;padding:56px 32px 32px}.hero{margin-bottom:32px}.chip{color:#5b21b6;background:#ede9fe;border-radius:999px;padding:4px 10px;font-size:12px;font-weight:600;display:inline-block}.hero h1{letter-spacing:-.04em;margin-top:14px;font-size:clamp(40px,7vw,64px);font-weight:800;line-height:1.02}.lede{max-width:34em;color:var(--muted);margin-top:12px;font-size:clamp(15px,2vw,17px)}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.checker{background-color:#fff;background-image:conic-gradient(#eee 25%, transparent 0 50%, #eee 0 75%, transparent 0);background-size:12px 12px}.footer{border-top:1px solid var(--line);color:var(--muted);margin-top:48px;padding-top:20px;font-size:13px}.footer a{color:var(--text);-webkit-text-decoration-color:var(--line-strong);text-decoration-color:var(--line-strong);text-underline-offset:3px;font-weight:500;transition:color .15s,text-decoration-color .15s}.footer a:hover{color:var(--accent);text-decoration-color:currentColor}@media (width<=640px){.page{padding:40px 16px 24px}}@media (prefers-reduced-motion:reduce){*{transition:none!important}}.workspace{grid-template-columns:minmax(0,1fr);gap:16px;display:grid}.panel{border:1px solid var(--line);background:var(--surface);border-radius:12px;box-shadow:0 1px 2px #18181b0a}.group{border:0;border-bottom:1px solid var(--line);flex-direction:column;gap:10px;min-width:0;padding:18px 18px 20px;display:flex}.group:last-child{border-bottom:0}.group-label{float:left;letter-spacing:.07em;text-transform:uppercase;width:100%;color:var(--subtle);padding:0;font-size:11px;font-weight:600}.group-label+*{clear:both}.optional{letter-spacing:0;text-transform:none;color:var(--subtle);margin-left:4px;font-weight:500}.drop{border:1.5px dashed var(--line-strong);cursor:pointer;border-radius:10px;align-items:center;gap:12px;padding:14px;transition:border-color .15s,background-color .15s;display:flex;position:relative}.drop:hover,.drop.over{border-color:var(--accent);background:var(--accent-soft)}.drop:has(input:focus-visible){border-color:var(--accent);box-shadow:var(--ring)}.drop-icon{background:var(--accent-soft);width:40px;height:40px;color:var(--accent);border-radius:10px;flex:none;place-items:center;display:grid}.thumb{border:1px solid var(--line);object-fit:cover;border-radius:6px;flex:none;width:40px;height:64px}.drop-text{min-width:0;color:var(--muted);flex-direction:column;font-size:12px;display:flex}.drop-text strong{color:var(--text);font-size:14px;font-weight:600}.error{color:#b91c1c;font-size:13px}.segmented{background:var(--bg);border-radius:9px;grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;gap:2px;padding:3px;display:grid}.segment{text-align:center;color:var(--muted);cursor:pointer;border-radius:7px;flex-direction:column;align-items:center;padding:7px 8px;transition:background-color .15s,color .15s,box-shadow .15s;display:flex}.segment span{font-size:13px;font-weight:600}.segment small{color:var(--subtle);font-size:11px}.segment:hover{color:var(--text)}.segment:has(input:checked){background:var(--surface);color:var(--text);box-shadow:0 1px 2px #18181b14, 0 0 0 1px var(--line)}:is(.segment:has(input:focus-visible),.swatch:has(input:focus-visible)){outline:2px solid var(--accent);outline-offset:2px}.swatches{gap:8px;display:flex}.swatch{border:1px solid var(--line);color:var(--muted);cursor:pointer;border-radius:10px;flex-direction:column;flex:1;align-items:center;gap:6px;padding:8px 4px;font-size:12px;font-weight:500;transition:border-color .15s,color .15s;display:flex}.swatch:hover{border-color:var(--line-strong);color:var(--text)}.swatch:has(input:checked){border-color:var(--accent);color:var(--text);box-shadow:0 0 0 1px var(--accent)}.dot{border-radius:50%;width:26px;height:26px;box-shadow:inset 0 0 0 1px #0000001f,inset 0 -6px 10px #0000001f}.bg-row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}input[type=color]{border:1px solid var(--line);background:var(--surface);cursor:pointer;border-radius:8px;width:36px;height:36px;padding:3px;transition:border-color .15s}input[type=color]:hover:not(:disabled){border-color:var(--line-strong)}input[type=color]::-webkit-color-swatch-wrapper{padding:0}input[type=color]::-webkit-color-swatch{border:none;border-radius:5px}input[type=color]:disabled{opacity:.4;cursor:not-allowed}.hex{color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.check{cursor:pointer;align-items:center;gap:8px;margin-left:auto;font-size:13px;font-weight:500;display:inline-flex}.check input{width:16px;height:16px;accent-color:var(--accent)}.text-input{border:1px solid var(--line);background:var(--surface);border-radius:8px;outline:none;width:100%;padding:9px 12px;transition:border-color .15s,box-shadow .15s}.text-input::placeholder{color:#8a8a93}.text-input:hover{border-color:var(--line-strong)}.text-input:focus{border-color:var(--accent);box-shadow:var(--ring)}.stage{border:1px solid var(--line);background-color:#fafafab3;background-image:radial-gradient(circle,#c4c4cc 1px,#0000 1.2px);background-size:16px 16px;border-radius:12px;flex-direction:column;order:-1;min-width:0;display:flex;overflow:hidden}.stage-bar{border-bottom:1px solid var(--line);background:var(--surface);justify-content:space-between;align-items:center;gap:12px;padding:10px 10px 10px 16px;display:flex}.stage-title{font-size:13px;font-weight:600}.stage-title span{font-variant-numeric:tabular-nums;color:var(--subtle);margin-left:6px;font-weight:500}.stage-canvas{flex:1;justify-content:center;align-items:center;padding:28px 16px;display:flex}.stage-canvas canvas{border-radius:4px;width:auto;max-width:100%;height:auto;max-height:62vh;display:block;box-shadow:0 0 0 1px #18181b0f,0 2px 4px #18181b0f,0 24px 48px -16px #18181b47}.btn-primary{background:var(--accent);color:#fff;cursor:pointer;border:0;border-radius:8px;flex:none;padding:8px 16px;font-size:14px;font-weight:600;transition:background-color .15s,transform .1s;box-shadow:0 1px 2px #5b21b64d,inset 0 1px #ffffff26}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:active{transform:translateY(1px)}@media (width>=900px){.workspace{grid-template-columns:320px minmax(0,1fr);align-items:start;gap:20px}.stage{order:0;min-height:min(80vh,920px);position:sticky;top:20px}.stage-canvas{padding:40px}.stage-canvas canvas{max-height:min(100vh - 180px,860px)}}