:root{color-scheme:light;--bg:#e4e5e1;--panel:#f7f7f4;--ink:#20262b;--muted:#596168;--line:#d0d3cf;--accent:#2f5d7c;--ui:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:var(--bg);color:var(--ink);font:14px/1.6 var(--ui)}
main{position:fixed;inset:0;width:100vw;height:100dvh}canvas{display:block;width:100%;height:100%;cursor:crosshair;touch-action:manipulation;-webkit-tap-highlight-color:transparent}canvas:focus-visible{outline:2px solid var(--accent);outline-offset:-3px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.explore{position:fixed;top:max(14px,env(safe-area-inset-top));right:max(14px,env(safe-area-inset-right));z-index:4;width:44px;height:44px;padding:0;border-radius:50%;border:1px solid #20262b40;background:#e4e5e1c0;color:#20262bc0;font:16px/1 var(--mono);cursor:pointer}
.explore:hover,.explore:focus-visible{color:var(--ink);border-color:#20262ba0;background:#e4e5e1f0}
.status{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);width:min(460px,calc(100vw - 48px));text-align:center;color:var(--muted);font:12px/1.8 var(--mono)}.status p{margin:0 0 12px}
.status button,.body button,.body select{min-height:44px;font:inherit;color:var(--ink);background:#fff;border:1px solid #aeb3b0;border-radius:0;padding:0 10px;cursor:pointer;max-width:100%}
.body button:disabled{opacity:.35;cursor:default}
.tip{position:fixed;z-index:3;pointer-events:none;max-width:min(330px,calc(100vw - 16px));padding:9px 12px;background:#fbfbf9f2;border:1px solid #aeb3b0;color:var(--ink);font:11px/1.7 var(--mono);white-space:pre-line}
dialog{width:min(620px,calc(100vw - 24px));max-height:calc(100dvh - 24px);padding:0;overflow:auto;overflow-x:hidden;background:var(--panel);color:var(--ink);border:1px solid #aeb3b0}dialog::backdrop{background:#1d222680}
@media(min-width:1000px){dialog{margin:12px 12px auto auto}dialog::backdrop{background:#1d222630}}
.head{position:sticky;top:0;z-index:2;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 24px 16px;background:var(--panel);border-bottom:1px solid var(--line)}
.head h1{margin:0;font-weight:500;font-size:28px;letter-spacing:-.01em}.close{width:44px;height:44px;flex:0 0 44px;font-size:22px;background:transparent;border:1px solid #aeb3b0;color:var(--ink);cursor:pointer}
.body{padding:18px 24px 26px}.body p{margin:0 0 12px;color:#363d43;font-size:13px;line-height:1.75}.intro{font-size:16px!important;color:var(--ink)!important}.caveat{border-left:2px solid var(--accent);padding-left:12px}
.notice{border:1px solid var(--ink);padding:10px 12px;color:var(--ink)!important;background:#fff}
label,legend{display:block;margin:0 0 6px;font-size:11px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);padding:0}
fieldset{border:0;margin:0;padding:0;min-width:0}
.controls{display:grid;gap:16px;margin:18px 0}.controls select{width:100%;min-width:0}.pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}fieldset .pair{margin-top:8px}.row{display:flex;gap:8px;flex-wrap:wrap}.presets button{flex:1 1 40%;min-width:0;padding:6px 8px;line-height:1.35;white-space:normal;overflow-wrap:anywhere}.body p{overflow-wrap:anywhere}
.presets button[aria-pressed=true]{border-color:var(--ink);font-weight:600}
.radios{flex-direction:column;gap:2px}.radio{display:flex;align-items:center;gap:10px;min-height:44px;margin:0;font-size:13px;letter-spacing:0;text-transform:none;color:var(--ink);cursor:pointer}.radio input{width:20px;height:20px;margin:0;flex:0 0 20px;accent-color:var(--accent)}
input[type=range]{width:100%;min-height:44px;margin:0;accent-color:var(--accent)}
.help{font-size:12px!important;color:var(--muted)!important;margin:6px 0 0!important}
.readout{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;margin:0 0 14px;font:12px/1.8 var(--mono);overflow-wrap:anywhere}.readout strong{display:block;font:500 19px/1.35 var(--ui)}.readout span{display:block;color:var(--muted)}.readout span:empty{display:none}.readout .accent{color:var(--accent)}
details{border-bottom:1px solid var(--line)}summary{min-height:44px;display:flex;align-items:center;cursor:pointer;font-size:13px;color:var(--muted)}details[open] summary{color:var(--accent)}details>div{padding:0 0 14px}
.key{display:flex;gap:12px;align-items:flex-start}.key svg{flex:0 0 60px;border:1px solid var(--line)}
.notes{margin:0 0 12px;padding-left:18px;color:#363d43;font-size:12px;line-height:1.7}
.scroll{max-height:50vh;overflow:auto}table{width:100%;border-collapse:collapse;font:11px/1.6 var(--mono);text-align:right}caption{text-align:left;color:var(--muted);padding:0 0 8px;font-family:var(--ui)}th,td{padding:7px 5px;border-bottom:1px solid var(--line)}th:first-child,td:first-child{text-align:left;padding-left:0}th{position:sticky;top:0;background:var(--panel);font-weight:400;color:var(--accent)}td button{min-height:44px!important;padding:0!important;border:0!important;background:none!important;text-decoration:underline;text-underline-offset:3px;text-align:left}tr[aria-current=true] td{color:var(--accent);font-weight:600}
.links{display:flex;flex-wrap:wrap;gap:8px 18px;margin:18px 0 10px;font-size:12px}a{color:var(--accent);text-underline-offset:3px}.credit{font-size:11px!important;color:var(--muted)!important}
@media(max-width:600px){.head{padding:16px 16px 12px}.head h1{font-size:24px}.body{padding:14px 16px 22px}.pair{grid-template-columns:1fr}table{font-size:10px}th,td{padding:6px 3px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
@media(forced-colors:active){.explore,.close,.body button,.body select{border-color:ButtonText;color:ButtonText}canvas{border:1px solid CanvasText}}