:root{--bg:#f7faf8;--card:#fff;--ink:#13262a;--muted:#56656a;--line:#d9e3df;--accent:#127c78;--accent-ink:#fff;--soft:#e3f2ef;--good:#3f7a22;--good-soft:#eaf5df;--r:18px;--h1:#eef3f1;--h1t:#7a8a87;--h2:#cde6e2;--h2t:#0f4f4c;--h3:#7fc1ba;--h3t:#0b3634;--h4:#1f8f88;--h4t:#fff;--h5:#0b524f;--h5t:#fff;--best:#f2b400;--best-ink:#13262a;--best-glow:rgba(255,197,49,.45)}
@media (prefers-color-scheme:dark){:root{--bg:#0f1c1e;--card:#172628;--ink:#eef5f2;--muted:#9db2af;--line:#26393b;--accent:#4fc2bb;--accent-ink:#0f1c1e;--soft:#1c2f2e;--good:#9bd067;--good-soft:#22331c;--h1:#1c2a2b;--h1t:#7f9592;--h2:#1e4a47;--h2t:#cdede9;--h3:#23716b;--h3t:#fff;--h4:#36a79e;--h4t:#0f1c1e;--h5:#7fe0d6;--h5t:#0f1c1e;--best:#ffc531;--best-ink:#13262a;--best-glow:rgba(255,197,49,.5)}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.55 "Figtree","Helvetica Neue",system-ui,-apple-system,sans-serif}
a{color:var(--accent)}
.wrap{max-width:720px;margin:0 auto;padding:0 18px}
header.top{display:flex;align-items:center;justify-content:space-between;padding:18px 0}
.logo{display:inline-flex;align-items:center;gap:8px;font-family:"Bricolage Grotesque","Avenir Next",system-ui,sans-serif;font-weight:800;font-size:23px;letter-spacing:-.03em;color:var(--ink);text-decoration:none}
nav.top a{margin-left:16px;color:var(--muted);text-decoration:none;font-size:15px}
.hero{padding:28px 0 8px}
.eyebrow{font-family:"DM Mono",ui-monospace,Menlo,monospace;text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:500;color:var(--accent)}
h1,h2,h3{font-family:"Bricolage Grotesque","Avenir Next",system-ui,sans-serif}
h1{font-weight:800;font-size:clamp(34px,8.5vw,54px);line-height:1.08;letter-spacing:-.03em;margin:8px 0 14px}
h2{font-size:26px;letter-spacing:-.02em;line-height:1.2;margin:0 0 10px}
h3{font-size:18px;margin:0 0 4px}
p.lede{font-size:19px;color:var(--muted);margin:0 0 20px}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);border:0;border-radius:999px;padding:14px 22px;font-weight:700;font-size:16px;text-decoration:none;cursor:pointer}
.btn.ghost{background:transparent;color:var(--accent);border:2px solid var(--accent)}
.btn:disabled{opacity:.6;cursor:default}
section{padding:26px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.grid{display:grid;gap:12px}
@media (min-width:640px){.grid.three{grid-template-columns:repeat(3,1fr)}.grid.two{grid-template-columns:repeat(2,1fr)}}
.step .n{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--soft);color:var(--accent);font-weight:800;margin-bottom:8px}
.step p{margin:0;color:var(--muted);font-size:15px}
.chain{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin:14px 0}
.dot{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:14px;background:var(--soft);color:var(--accent)}
.dot.new{background:var(--good-soft);color:var(--good)}
.arrow{color:var(--muted)}
.ladder{display:grid;gap:10px}
.rung{display:flex;gap:14px;align-items:center;border:1px solid var(--line);border-radius:14px;padding:12px 14px;background:var(--card)}
.rung b{font-size:22px;min-width:34px;text-align:center}
.rung small{display:block;color:var(--muted)}
.rung.on{border-color:var(--good);background:var(--good-soft)}
.meter{height:12px;background:var(--line);border-radius:999px;overflow:hidden;margin:10px 0 4px}
.meter i{display:block;height:100%;background:var(--good);border-radius:999px}
.note{font-size:14px;color:var(--muted)}
.pill{font-family:"DM Mono",ui-monospace,Menlo,monospace;display:inline-block;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:4px 10px;border-radius:999px;background:var(--soft);color:var(--accent)}
form .f{margin-bottom:14px}
label{display:block;font-weight:600;font-size:15px;margin-bottom:6px}
input,textarea,select{width:100%;font:inherit;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink)}
textarea{min-height:90px}
.choices label{display:flex;gap:10px;align-items:center;font-weight:500;border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin-bottom:8px;cursor:pointer}
.choices input{width:auto}
.msg{margin-top:12px;font-weight:600}
.msg.ok{color:var(--good)}.msg.err{color:var(--accent)}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;text-align:center}
.stats b{display:block;font-size:26px;letter-spacing:-.02em}
.stats span{font-size:13px;color:var(--muted)}
details{border-bottom:1px solid var(--line);padding:12px 0}
summary{font-weight:600;cursor:pointer}
details p{color:var(--muted);margin:8px 0 0}
footer{padding:36px 0 50px;color:var(--muted);font-size:14px}
.heat{display:grid;gap:9px 3px;margin:22px 0 8px;font-size:11px;position:relative}
.heat .hl{color:var(--muted);text-align:center;white-space:nowrap}
.heat .dl{color:var(--muted);font-weight:600;align-self:center}
.heat .cell{height:28px;border-radius:5px;display:grid;place-items:center;font-size:10px;font-weight:700;font-variant-numeric:tabular-nums;background:var(--h1);color:var(--h1t)}
.heat .cell.b1{background:var(--h1);color:var(--h1t)}.heat .cell.b2{background:var(--h2);color:var(--h2t)}.heat .cell.b3{background:var(--h3);color:var(--h3t)}.heat .cell.b4{background:var(--h4);color:var(--h4t)}.heat .cell.b5{background:var(--h5);color:var(--h5t);box-shadow:inset 0 0 0 1px rgba(0,0,0,.15)}
.heat .cell.closed{background:repeating-linear-gradient(45deg,var(--line),var(--line) 3px,transparent 3px,transparent 6px)}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.legend span{display:inline-flex;align-items:center;gap:6px}
.sw{display:inline-block;width:14px;height:14px;border-radius:4px}
.sw.b1{background:var(--h1)}.sw.b2{background:var(--h2)}.sw.b3{background:var(--h3)}.sw.b4{background:var(--h4)}.sw.b5{background:var(--h5)}.sw.sl{border:3px solid var(--best);box-shadow:0 0 6px var(--best-glow);background:transparent}
.qbox{position:absolute;border:3px solid var(--best);border-radius:9px;box-shadow:0 0 0 3px var(--best-glow),0 0 14px var(--best-glow);pointer-events:none}
.qbox span{position:absolute;top:-19px;left:50%;transform:translateX(-50%);background:var(--best);color:var(--best-ink);font-size:10px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:2px 8px;border-radius:999px;white-space:nowrap}
.opts{display:grid;gap:8px;margin-top:8px}
.opt{display:flex;gap:10px;align-items:center;justify-content:space-between;border:1px solid var(--line);border-radius:12px;padding:8px 10px;background:var(--card)}
.opt span{flex:1}
.opt select{width:auto;min-width:130px;padding:8px 10px}
.opt.own input{flex:1;padding:8px 10px}
.btn.small{padding:8px 14px;font-size:14px}
ul.week{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:6px}
ul.week li{display:flex;gap:12px;border-bottom:1px solid var(--line);padding:6px 0}
ul.week b{min-width:40px}
.muted{color:var(--muted)}
.mrow{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.mrow.total{border-bottom:0;font-size:18px}
.mrow b{white-space:nowrap}
.live{color:var(--good);font-size:11px;letter-spacing:.08em;margin-left:6px;animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.4}}
ul.guests{list-style:none;padding:0;margin:14px 0 0;display:grid;gap:6px}
ul.guests li{padding:8px 12px;border:1px solid var(--line);border-radius:10px;font-size:15px}
ul.guests li.in{border-color:var(--good);background:var(--good-soft)}
ul.guests .tick{color:var(--good);font-weight:700}
.rung.track{border-style:dashed;border-color:var(--good)}
.lens{color:var(--good)}
.mono{font-family:"DM Mono",ui-monospace,Menlo,monospace;letter-spacing:.04em}
nav.top a{white-space:nowrap}
@media (max-width:430px){nav.top a{margin-left:12px;font-size:14px}nav.top a[href="#how"],nav.top a[href="index.html#how"]{display:none}}