:root{color-scheme:light dark;--bg:#fbfaf7;--fg:#1b1b1f;--muted:#4a4a55;--card:#ffffff;--line:#c9c6bd;--accent:#1d4ed8;--accent-fg:#fff;--on:#0f6b3a;--hi:#fff3b0;--hi-fg:#1b1b1f}
@media (prefers-color-scheme:dark){:root{--bg:#141418;--fg:#f1f0ec;--muted:#c4c3cc;--card:#1f1f26;--line:#55545f;--accent:#93b4ff;--accent-fg:#0b1020;--on:#7be0a6;--hi:#5a4a00;--hi-fg:#fff8d6}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:1.0625rem/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main,header,footer{max-width:46rem;margin:0 auto;padding:0 1rem}
header{padding-top:.75rem}
h1{font-size:2rem;line-height:1.2;margin:.75rem 0}
h2{font-size:1.35rem;margin:1.75rem 0 .5rem}
h3{font-size:1.1rem;margin:1.25rem 0 .4rem}
a{color:var(--accent)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-999px;top:0;background:var(--card);padding:.75rem;z-index:5}
.skip:focus{left:.5rem}
nav a,.links a,.demo-list a{display:inline-flex;align-items:center;min-height:44px}
.demo-list{padding-left:1.2rem}.demo-list li{margin:.35rem 0}
.what{font-weight:600}
.note{color:var(--muted)}
button,select{font:inherit;min-height:44px;min-width:44px;padding:.45rem .9rem;border-radius:.6rem;border:2px solid var(--accent);background:var(--card);color:var(--fg);cursor:pointer}
button.primary{background:var(--accent);color:var(--accent-fg)}
button[aria-pressed="true"]{background:var(--on);border-color:var(--on);color:var(--bg)}
input[type=text],textarea{font:inherit;width:100%;min-height:44px;padding:.5rem .65rem;border-radius:.5rem;border:2px solid var(--line);background:var(--card);color:var(--fg)}
input[type=checkbox]{width:28px;height:28px;margin:0 .5rem 0 0;vertical-align:middle}
.check{display:inline-flex;align-items:center;min-height:44px}
textarea.code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.95rem;min-height:14rem;white-space:pre}
label{display:block;font-weight:600;margin:.6rem 0 .25rem}
label.check{font-weight:600}
.row{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;margin:.5rem 0}
.feed{list-style:none;padding:0;margin:.5rem 0}
.feed>li{background:var(--card);border:1px solid var(--line);border-radius:.75rem;padding:.65rem .8rem;margin:.5rem 0}
.feed .who{font-weight:700}
.feed .meta{color:var(--muted);font-size:.95rem}
.feed p{margin:.25rem 0}
.feed .me{border-left:6px solid var(--accent)}
.feed .sys{font-style:italic;color:var(--muted)}
.status{background:var(--card);border:2px dashed var(--line);border-radius:.6rem;padding:.6rem .8rem}
.items{list-style:none;padding:0}
.items li{border:2px solid var(--line);border-radius:.6rem;padding:.6rem .8rem;margin:.4rem 0;min-height:44px}
.items li.current{background:var(--hi);color:var(--hi-fg);border-color:var(--fg);border-width:3px}
.viewfinder{position:relative;border:3px solid var(--line);border-radius:.8rem;padding:1.5rem 1rem;text-align:center;font-size:1.1rem;background:var(--card);overflow:hidden}
.flash{position:absolute;inset:0;background:#fff;opacity:0;pointer-events:none}
.flash.go{animation:fl .35s ease-out}
@keyframes fl{0%{opacity:.85}100%{opacity:0}}
.page{background:var(--card);border:1px solid var(--line);border-radius:.6rem;padding:1rem;font-family:Georgia,"Times New Roman",serif}
details{background:var(--card);border:1px solid var(--line);border-radius:.5rem;padding:.25rem .6rem}
summary{min-height:44px;display:flex;align-items:center;cursor:pointer;font-weight:600}
.retro header.bar{background:#c0deed;color:#0b2a3c;border-radius:.6rem;padding:.4rem .8rem}
footer{margin-top:2.5rem;padding-bottom:2rem;color:var(--muted);border-top:1px solid var(--line)}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
[hidden]{display:none!important}
button[aria-disabled="true"]{border-style:dashed;cursor:progress}
.feed h5{margin:0 0 .2rem;font-size:1.1rem}