*{box-sizing:border-box}
:root{
  --paper:#0a1416; --ink:#e6f2f1; --muted:#8fa8a8; --line:#22383a;
  --panel:#0f1e21; --water:#2c7d84; --wood:#6a4b2c; --gold:#ffd24a; --sand:#c8a978;
}
@media(prefers-color-scheme:light){
  :root{--paper:#eef3f2;--ink:#0f1e21;--muted:#5c7676;--line:#cfe0df;--panel:#ffffff;--water:#2c7d84;--wood:#a97b4c}
}
html,body{margin:0;min-height:100vh}
body{background:var(--paper);color:var(--ink);font-family:ui-sans-system,system-ui,-apple-system,"Segoe UI",Roboto,Inter,sans-serif;display:flex;flex-direction:column}
.back{margin:18px 24px 0;color:var(--muted);text-decoration:none;font-size:14px}
.back:hover{color:var(--ink)}
.head{max-width:1120px;width:100%;margin:0 auto;padding:8px 24px 0}
.eyebrow{letter-spacing:.14em;text-transform:uppercase;font-size:12px;color:var(--muted);margin:0 0 6px}
h1{margin:0;font-size:42px;letter-spacing:-.02em;line-height:1}
.lede{color:var(--muted);max-width:66ch;line-height:1.55;margin:10px 0 0}
.lede strong{color:var(--ink)}
.layout{max-width:1120px;width:100%;margin:0 auto;display:grid;grid-template-columns:1.3fr .7fr;gap:20px;padding:20px 24px 28px;flex:1}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:0 12px 34px rgba(0,0,0,.3)}
#sluice{width:100%;height:auto;display:block;border-radius:12px;border:1px solid var(--line);background:linear-gradient(#123033,#08191b)}
.gauges{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px}
.gauge{border:1px solid var(--line);border-radius:10px;padding:8px 10px}
.gauge span{display:block;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.gauge strong{display:block;font:700 17px/1.3 ui-monospace,Menlo,monospace;margin-top:2px}
.status{min-height:22px;color:var(--muted);font-size:14px;margin:10px 0 0}
.bench-title{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 4px;display:flex;justify-content:space-between}
.bench-title span{color:var(--ink)}
.bench-note{margin:0 0 12px;font-size:14px}
.field{margin-bottom:12px}
.field label{display:flex;justify-content:space-between;align-items:baseline;font-size:13px}
.field output{font:600 13px ui-monospace,Menlo,monospace;color:var(--water)}
.field input{width:100%;margin:6px 0 2px;accent-color:var(--water)}
.segmented{display:flex;gap:6px;margin-top:6px}
.segmented button{flex:1;padding:8px 0}
.segmented button[aria-pressed="true"]{border-color:var(--water);color:var(--ink);background:rgba(44,125,132,.18)}
.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
button{border:1px solid var(--line);background:var(--paper);color:var(--ink);padding:10px 16px;border-radius:10px;font:600 14px/1 system-ui;cursor:pointer}
button:hover{border-color:var(--water)}
button:focus-visible{outline:2px solid var(--water);outline-offset:2px}
button.primary{background:var(--water);color:#04191b;border-color:transparent}
button.ghost{background:transparent}
button kbd{border:1px solid currentColor;border-radius:5px;padding:0 5px;font-size:11px;opacity:.75}
button:disabled{opacity:.45;cursor:default}
.empty{color:var(--muted);font-style:italic;font-size:14px;margin:6px 0}
.assays{list-style:none;margin:6px 0 0;padding:0;display:grid;gap:8px}
.assays li{border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:13px;background:var(--paper)}
.assays li b{font:700 15px ui-monospace,Menlo,monospace}
.assays li small{color:var(--muted)}
.assays li.pass{border-color:var(--gold)}
.assays li.pass b{color:var(--gold)}
.assays li.miss b{color:var(--muted)}
.hint{font-size:12px;color:var(--muted);line-height:1.9;margin:14px 0 0}
.hint kbd{border:1px solid var(--line);border-bottom-width:2px;background:var(--paper);padding:1px 6px;border-radius:6px;font-size:11px;color:var(--ink)}
.foot{display:flex;justify-content:space-between;gap:12px;padding:14px 24px 20px;color:var(--muted);font-size:13px;border-top:1px solid var(--line);max-width:1120px;width:100%;margin:0 auto;flex-wrap:wrap}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--ink)}
@media(max-width:900px){.layout{grid-template-columns:1fr}h1{font-size:34px}.gauges{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}