:root{--bg:#f4f7f6;--panel:#fff;--fg:#14211e;--mut:#5a6b66;--line:#d7e0dc;--accent:#0b6e5f;--on:#fff;--neg:#a8341f;--warn:#8a5b00}
@media (prefers-color-scheme:dark){:root{--bg:#0f1715;--panel:#17211e;--fg:#e4ecea;--mut:#93a5a0;--line:#2a3733;--accent:#5fcdb9;--on:#0f1715;--neg:#f0907a;--warn:#e0b050;color-scheme:dark}}
*{box-sizing:border-box}[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:var(--fg);font:14px/1.5 "IBM Plex Sans",system-ui,sans-serif;padding:20px max(16px,env(safe-area-inset-right)) 40px max(16px,env(safe-area-inset-left))}
main{max-width:1100px;margin:auto;display:grid;gap:14px}.pane{display:grid;gap:14px}
h1{font-size:22px;margin:0}h2{font-size:15px;margin:0 0 8px}p{margin:6px 0;max-width:75ch}
.card{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:14px;min-width:0}.narrow{max-width:400px;margin:10vh auto;display:grid;gap:10px}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.between{justify-content:space-between}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;margin:10px 0}
label{display:grid;gap:3px;font-size:13px;color:var(--mut);margin-bottom:8px}
input,select,button{font:inherit;color:var(--fg);background:var(--panel);border:1px solid var(--line);border-radius:4px;padding:7px 10px;min-width:0;max-width:100%}
button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}.primary,button[aria-pressed=true],.tab[aria-selected=true]{background:var(--accent);color:var(--on);border-color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
.tw{overflow:auto;margin-top:6px}table{border-collapse:collapse;width:100%;font-size:13px}th,td{padding:6px 8px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}th{color:var(--mut);font-weight:600}
.n{text-align:right;font-family:"IBM Plex Mono",monospace;font-variant-numeric:tabular-nums}.mono{font-family:"IBM Plex Mono",monospace;overflow-wrap:anywhere}.mut{color:var(--mut)}.neg{color:var(--neg)}.pos{color:var(--accent)}
.chip{border:1px solid var(--line);border-radius:99px;padding:2px 10px;font-size:12px}.msg:empty{display:none}.msg{border-left:3px solid var(--accent);padding-left:10px}
pre{background:var(--bg);padding:10px;border-radius:4px;overflow:auto;font:12px "IBM Plex Mono",monospace;white-space:pre-wrap;overflow-wrap:anywhere}
.gates{list-style:none;padding:0;margin:0;display:grid;gap:4px}.gates li::before{margin-right:8px;font-weight:600}.gates .y::before{content:"Done";color:var(--accent)}.gates .x::before{content:"Open";color:var(--warn)}