:root{--bg: #f9f7ee;--panel: #f4f1e4;--panel-2: #ecead9;--line: #d1d1e1;--text: #484ab3;--muted: #7779bf;--accent: #484ab3;--accent-2: #3a3c99;--on-accent: #f9f7ee;--warn: #b98613;--danger: #c0493a;--glass: rgba(249, 247, 238, .72);--glass-strong: rgba(249, 247, 238, .86);--glass-2: rgba(244, 241, 228, .66);--card: rgba(255, 253, 246, .74);--hairline: rgba(72, 74, 179, .14);--hairline-soft: rgba(72, 74, 179, .08);--blur: saturate(160%) blur(18px);--radius-sm: 10px;--radius: 14px;--radius-lg: 20px;--radius-xl: 26px;--sh-1: 0 1px 2px rgba(40, 40, 90, .06), 0 1px 1px rgba(40, 40, 90, .04);--sh-2: 0 4px 14px rgba(40, 40, 90, .1), 0 1px 3px rgba(40, 40, 90, .06);--sh-3: 0 12px 34px rgba(40, 40, 90, .16), 0 3px 10px rgba(40, 40, 90, .08);--sh-inset: inset 0 1px 0 rgba(255, 255, 255, .6);--accent-glow: 0 6px 18px rgba(72, 74, 179, .28);font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,SF Pro Text,Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}*{box-sizing:border-box}html,body{margin:0;height:100%;color:var(--text);overflow:hidden;background:radial-gradient(1100px 760px at 78% -8%,rgba(142,198,118,.18),transparent 60%),radial-gradient(900px 680px at 8% 108%,rgba(72,74,179,.1),transparent 55%),var(--bg)}#app{display:grid;grid-template-columns:360px 1fr;height:100vh;padding:14px;gap:14px}#sidebar{background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);border:1px solid var(--hairline);border-radius:var(--radius-xl);box-shadow:var(--sh-3),var(--sh-inset);display:flex;flex-direction:column;min-height:0;overflow:hidden}#sidebar-head{padding:18px 20px 14px;border-bottom:1px solid var(--hairline-soft)}#sidebar-head h1{font-size:16px;font-weight:650;margin:0;letter-spacing:-.2px}#preset-line{margin:6px 0 0;font-size:12px;color:var(--muted)}#preset-line strong{color:var(--accent-2);font-weight:600}#import-bar{margin-top:12px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}.import-btn{background:var(--card);color:var(--text);border:1px solid var(--hairline);border-radius:var(--radius-sm);padding:9px 13px;font-size:12.5px;font-weight:600;cursor:pointer;box-shadow:var(--sh-1),var(--sh-inset);transition:transform .12s ease,box-shadow .12s ease,background .12s ease}.import-btn:hover{background:#fffdf6;box-shadow:var(--sh-2),var(--sh-inset);transform:translateY(-1px)}.import-btn:active{transform:translateY(0);box-shadow:var(--sh-1)}#shape-info{font-size:11px;color:var(--muted)}#shape-info.err{color:var(--danger)}#project-bar{margin-top:12px;display:flex;flex-direction:column;gap:8px}.proj-row{display:flex;gap:8px}.proj-select{flex:1;background:var(--card);border:1px solid var(--hairline);color:var(--text);border-radius:var(--radius-sm);padding:8px 10px;font-size:12.5px;font-family:inherit;box-shadow:var(--sh-inset);cursor:pointer}.proj-btn{background:var(--card);border:1px solid var(--hairline);color:var(--text);border-radius:var(--radius-sm);padding:8px 12px;font-size:12px;font-weight:600;font-family:inherit;cursor:pointer;box-shadow:var(--sh-1),var(--sh-inset);transition:transform .12s ease,box-shadow .12s ease,background .12s ease}.proj-btn:hover:not(:disabled){background:#fffdf6;transform:translateY(-1px);box-shadow:var(--sh-2),var(--sh-inset)}.proj-btn:active:not(:disabled){transform:translateY(0)}.proj-btn:disabled{opacity:.4;cursor:default;box-shadow:none}.proj-btn.ok{background:var(--accent);color:var(--on-accent);border-color:transparent;box-shadow:var(--accent-glow)}.proj-btn.ok:hover{background:var(--accent-2)}.proj-saveform{display:flex;gap:8px}.proj-saveform[hidden]{display:none}.proj-saveform input{flex:1;background:#fffdf6;border:1px solid var(--accent);color:var(--text);border-radius:var(--radius-sm);padding:8px 10px;font-size:12.5px;font-family:inherit;box-shadow:var(--sh-inset)}.proj-link{flex:1;background:transparent;border:1px dashed var(--hairline);color:var(--muted);border-radius:var(--radius-sm);padding:8px 10px;font-size:12px;font-family:inherit;cursor:pointer}.proj-link:hover{color:var(--text);border-color:var(--accent)}#panel{overflow-y:auto;padding:14px 16px 22px;flex:1;min-height:0;scrollbar-width:thin;scrollbar-color:var(--line) transparent}#panel::-webkit-scrollbar{width:10px}#panel::-webkit-scrollbar-thumb{background:#484ab32e;border-radius:10px;border:3px solid transparent;background-clip:padding-box}#panel::-webkit-scrollbar-thumb:hover{background:#484ab34d;background-clip:padding-box}#export-bar{padding:14px 16px 16px;border-top:1px solid var(--hairline-soft);background:var(--glass-2);display:flex;flex-direction:column;gap:10px}.export-title{margin:0 0 2px;font-size:10.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.export-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.export-btn{width:100%;background:linear-gradient(180deg,#5456c4 0%,var(--accent) 55%,var(--accent-2) 100%);color:var(--on-accent);border:0;border-radius:var(--radius);padding:13px 10px;font-size:13px;font-weight:650;letter-spacing:-.1px;cursor:pointer;box-shadow:var(--accent-glow),inset 0 1px #ffffff38;transition:transform .1s ease,box-shadow .14s ease,filter .14s ease}.export-btn:hover{filter:brightness(1.05);box-shadow:0 9px 24px #484ab357,inset 0 1px #ffffff38;transform:translateY(-1px)}.export-btn:active{transform:translateY(0);box-shadow:var(--sh-1)}.export-btn.done{filter:saturate(.9) brightness(.96)}.export-btn:disabled{opacity:.55;cursor:default;box-shadow:none;transform:none;filter:none}.group{margin:12px 0;border:1px solid var(--hairline);border-radius:var(--radius-lg);overflow:hidden;background:var(--card);box-shadow:var(--sh-1),var(--sh-inset)}.group>summary{list-style:none;cursor:pointer;padding:12px 14px;background:transparent;font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);display:flex;justify-content:space-between;align-items:center;user-select:none}.group[open]>summary{border-bottom:1px solid var(--hairline-soft)}.group>summary::-webkit-details-marker{display:none}.group>summary:after{content:"";width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg);transition:transform .18s ease;opacity:.7}.group[open]>summary:after{transform:rotate(45deg)}.group-body{padding:8px 14px 14px}.control{margin:14px 0}.control:first-child{margin-top:8px}.control-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:7px}.control-label{font-size:12.5px;font-weight:550;color:var(--text)}.control-unit{font-size:11px;color:var(--muted);margin-left:3px;font-weight:400}.control-row{display:flex;align-items:center;gap:10px}.label-wrap{display:flex;align-items:center;gap:4px;min-width:0}.help-btn{flex:none;margin-left:6px;width:18px;height:18px;padding:0;border:0;background:transparent;color:var(--muted);font-size:13px;line-height:1;cursor:pointer;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;transition:color .12s ease,background .12s ease}.help-btn:hover{color:var(--accent);background:#484ab31a}.help-btn:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.help-pop{position:fixed;z-index:1000;max-width:272px;background:var(--glass-strong);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);color:var(--text);border:1px solid var(--hairline);border-radius:var(--radius);padding:11px 13px;font-size:12px;line-height:1.5;box-shadow:var(--sh-3);animation:pop-in .14s ease}.help-pop[hidden]{display:none}@keyframes pop-in{0%{opacity:0;transform:translateY(-4px) scale(.98)}to{opacity:1;transform:none}}.control input[type=range]{flex:1;-webkit-appearance:none;appearance:none;height:26px;background:transparent;cursor:pointer}.control input[type=range]::-webkit-slider-runnable-track{height:5px;border-radius:3px;background:linear-gradient(var(--line),var(--line));box-shadow:inset 0 1px 2px #28285a24}.control input[type=range]::-moz-range-track{height:5px;border-radius:3px;background:var(--line);box-shadow:inset 0 1px 2px #28285a24}.control input[type=range]::-moz-range-progress{height:5px;border-radius:3px;background:var(--accent)}.control input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;margin-top:-6.5px;border-radius:50%;background:radial-gradient(circle at 50% 35%,#fff,#f3f1ea);border:1px solid rgba(72,74,179,.3);box-shadow:0 1px 3px #28285a47,0 2px 6px #28285a2e;transition:transform .1s ease,box-shadow .12s ease}.control input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:#fff;border:1px solid rgba(72,74,179,.3);box-shadow:0 1px 3px #28285a47,0 2px 6px #28285a2e}.control input[type=range]:hover::-webkit-slider-thumb{box-shadow:0 2px 5px #28285a4d,0 3px 9px #28285a33}.control input[type=range]:active::-webkit-slider-thumb{transform:scale(1.1)}.control input[type=range]:focus-visible::-webkit-slider-thumb{outline:2px solid var(--accent);outline-offset:2px}.control input[type=number]{width:66px;background:#fffdf6;border:1px solid var(--hairline);color:var(--text);border-radius:var(--radius-sm);padding:6px 8px;font-size:12.5px;font-weight:550;text-align:right;font-variant-numeric:tabular-nums;box-shadow:var(--sh-inset);transition:border-color .12s ease,box-shadow .12s ease}.control input[type=number]:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #484ab329}.control input[type=number].out-of-range{border-color:var(--warn);box-shadow:0 0 0 3px #b9861324}.control select{width:100%;background:#fffdf6;border:1px solid var(--hairline);color:var(--text);border-radius:var(--radius-sm);padding:9px 10px;font-size:12.5px;font-weight:550;font-family:inherit;cursor:pointer;box-shadow:var(--sh-inset)}.control select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #484ab329}.toggle{display:flex;align-items:center;justify-content:space-between}.toggle input[type=checkbox],#fb-expert{-webkit-appearance:none;appearance:none;flex:none;width:46px;height:28px;border-radius:999px;background:var(--line);position:relative;cursor:pointer;transition:background .2s ease;box-shadow:inset 0 1px 3px #28285a2e}.toggle input[type=checkbox]:after,#fb-expert:after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #28285a4d,0 2px 5px #28285a26;transition:transform .2s cubic-bezier(.3,1.4,.5,1)}.toggle input[type=checkbox]:checked,#fb-expert:checked{background:var(--accent);box-shadow:inset 0 1px 3px #0000001f}.toggle input[type=checkbox]:checked:after,#fb-expert:checked:after{transform:translate(18px)}.toggle input[type=checkbox]:focus-visible,#fb-expert:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.derived{display:flex;justify-content:space-between;font-size:12.5px;padding:10px 2px 4px;color:var(--muted);border-top:1px dashed var(--hairline);margin-top:6px}.derived strong{color:var(--accent-2);font-weight:650;font-variant-numeric:tabular-nums}.expert-row{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;margin:2px 0 6px;background:var(--card);border:1px solid var(--hairline);border-radius:var(--radius-lg);box-shadow:var(--sh-1),var(--sh-inset);font-size:12.5px;font-weight:550}.expert-row label{cursor:pointer}#stage{position:relative;min-width:0;border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--hairline);box-shadow:var(--sh-3),inset 0 1px #ffffff80;background:radial-gradient(760px 520px at 70% 12%,rgba(255,255,255,.6),transparent 60%),linear-gradient(170deg,#fbfaf4,#f1efe4)}#viewport{position:absolute;inset:0}#viewport canvas{display:block}#overlay-top{position:absolute;top:16px;left:16px;right:16px;display:flex;justify-content:space-between;align-items:flex-start;pointer-events:none;gap:12px}#controls-left{pointer-events:auto;display:flex;gap:10px;flex-wrap:wrap}.segmented{display:flex;gap:2px;background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);padding:4px;border-radius:13px;border:1px solid var(--hairline);box-shadow:var(--sh-2),var(--sh-inset)}.segmented button{background:transparent;border:0;color:var(--muted);font-size:12.5px;font-weight:600;font-family:inherit;padding:7px 14px;border-radius:10px;cursor:pointer;transition:background .15s ease,color .15s ease,box-shadow .15s ease}.segmented button:hover{color:var(--text)}.segmented button.active{background:#fffdf6;color:var(--accent);box-shadow:var(--sh-1),0 0 0 1px var(--hairline-soft)}#modes button.active{background:var(--accent);color:var(--on-accent);box-shadow:var(--accent-glow)}#readout{pointer-events:auto;text-align:right;font-size:12px;color:var(--muted);background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);padding:11px 15px;border-radius:var(--radius);border:1px solid var(--hairline);box-shadow:var(--sh-2),var(--sh-inset);line-height:1.7;font-variant-numeric:tabular-nums}#readout b{color:var(--text);font-weight:650}#warnings{position:absolute;bottom:16px;left:16px;right:74px;display:flex;flex-direction:column;align-items:flex-start;gap:8px;pointer-events:none}.warn-item{pointer-events:auto;font-size:12.5px;font-weight:500;padding:9px 13px;border-radius:var(--radius);background:#b9861329;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(185,134,19,.4);color:#7a5a0e;box-shadow:var(--sh-2)}.warn-item.danger{background:#c0493a24;border-color:#c0493a6b;color:#93321f}#brand-logo{position:absolute;right:18px;bottom:16px;width:52px;height:43px;background-color:var(--accent);-webkit-mask:url(/logo.svg) center / contain no-repeat;mask:url(/logo.svg) center / contain no-repeat;opacity:.82;pointer-events:none;z-index:3}@media (max-width: 820px){#app{grid-template-columns:1fr;grid-template-rows:minmax(260px,44vh) minmax(0,1fr);height:100vh;height:100dvh;padding:10px;gap:10px}#stage{order:-1;border-radius:var(--radius-lg)}#sidebar{order:0;min-height:0;border-radius:var(--radius-lg);overflow-y:auto}#panel{overflow:visible;flex:0 0 auto}#export-bar{position:sticky;bottom:0;z-index:2;-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur)}#sidebar-head{padding:14px 16px 12px}#sidebar-head h1{font-size:15px}#panel{padding:12px 14px 18px}#export-bar{padding:12px 14px 14px}#overlay-top{inset:10px;gap:8px}#controls-left{gap:8px;align-self:flex-start}.segmented{padding:3px;border-radius:12px}.segmented button{padding:6px 11px;font-size:12px}#readout{position:absolute;left:0;bottom:0;text-align:left;max-width:calc(100% - 66px);font-size:11px;padding:8px 11px;line-height:1.5}#warnings{bottom:66px;left:10px;right:10px}#brand-logo{right:12px;bottom:10px;width:44px;height:36px}}