:root{--bg:#f7f7f8;--fg:#1c1c1e;--muted:#6b6b70;--line:#e2e2e6;--card:#fff;--accent:#2f6fed;--ok:#1a7f37;--err:#c0392b;--mono:ui-monospace, SFMono-Regular, Menlo, monospace}*{box-sizing:border-box}body{color:var(--fg);background:var(--bg);margin:0;font:15px/1.5 system-ui,-apple-system,sans-serif}header{background:var(--card);border-bottom:1px solid var(--line);align-items:center;gap:1.25rem;padding:.75rem 1.5rem;display:flex}.brand{color:var(--fg);font-weight:650;text-decoration:none}nav{align-items:center;gap:1rem;margin-left:auto;display:flex}nav a{color:var(--muted);text-decoration:none}nav a.active{color:var(--fg);font-weight:600}button.link{color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:0;padding:0}button.link:hover{color:var(--fg)}button.link.danger{color:var(--err);justify-self:start;font-size:.9rem}main{max-width:760px;margin:2rem auto;padding:0 1.25rem}h1{margin:0 0 .5rem;font-size:1.5rem}.lead{color:var(--muted);margin-top:0}.card{background:var(--card);border:1px solid var(--line);border-radius:10px;margin:1.25rem 0;padding:1.25rem}.card h2{margin:0 0 .25rem;font-size:1.1rem}.card>p{color:var(--muted);margin:0 0 .5rem}.card-link{color:inherit;text-decoration:none;display:block}.card-link:hover{border-color:var(--accent)}.crumb{margin:0 0 .75rem;font-size:.9rem}.crumb a{color:var(--muted);text-decoration:none}.crumb a:hover{color:var(--fg)}label{margin:1rem 0 .35rem;font-weight:600;display:block}textarea,input,select{width:100%;font:inherit;border:1px solid var(--line);background:#fff;border-radius:6px;padding:.55rem .65rem}textarea{resize:vertical;min-height:6rem}textarea:focus,input:focus,select:focus{outline:2px solid var(--accent);outline-offset:-1px}.row{flex-wrap:wrap;align-items:center;gap:.75rem;margin-top:1.25rem;display:flex}button.primary{background:var(--accent);color:#fff;font:inherit;cursor:pointer;border:0;border-radius:6px;padding:.55rem 1rem;font-weight:600}button.secondary{color:var(--fg);border:1px solid var(--line);font:inherit;cursor:pointer;background:#fff;border-radius:6px;padding:.55rem 1rem}button:disabled{opacity:.6;cursor:default}.status{font-size:.9rem}.ok{color:var(--ok)}.err{color:var(--err)}.hint{color:var(--muted);font-size:.85rem}.section-head{justify-content:space-between;align-items:baseline;margin-top:1.5rem;display:flex}.section-head label{margin:0}.section-head button{font-size:.9rem}.q{border:1px solid var(--line);background:#fff;border-radius:10px;margin:.75rem 0;overflow:hidden}.q-head{cursor:pointer;-webkit-user-select:none;user-select:none;background:#f4f4f6;align-items:center;gap:.6rem;padding:.7rem .9rem;list-style:none;display:flex}.q-head::-webkit-details-marker{display:none}.q-head:before{content:"▸";color:var(--muted);font-size:.8rem;transition:transform .15s}.q[open]>.q-head{border-bottom:1px solid var(--line)}.q[open]>.q-head:before{transform:rotate(90deg)}.q-num{color:var(--muted);font-variant-numeric:tabular-nums;font-size:.75rem}.q-name{font-family:var(--mono);font-size:.95rem;font-weight:600}.q-preview{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:.9rem;overflow:hidden}.q-body{gap:1rem;padding:1rem .9rem 1.1rem;display:grid}.q-grid{grid-template-columns:1fr 10rem;gap:1rem;display:grid}.field label{text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 .3rem;font-size:.72rem;font-weight:600}.q-body input,.q-body select,.q-body textarea{padding:.6rem .75rem;font-size:1rem}.q-body input{font-family:var(--mono)}.q-body textarea{min-height:0;line-height:1.5}.q-criteria{font-family:var(--mono);font-size:.95rem}@media (width<=560px){.q-grid{grid-template-columns:1fr}}.badge{text-transform:uppercase;letter-spacing:.04em;color:#335;background:#eef;border-radius:4px;padding:.1rem .4rem;font-size:.7rem}.badge.noul{color:#1b5e20;background:#e8f5e9}.badge.choice{color:#0d47a1;background:#e3f2fd}.badge.score{color:#e65100;background:#fff3e0}.answer{border-top:1px solid var(--line);margin-top:.75rem;padding:.9rem 0 .5rem}.answer-head{align-items:center;gap:.5rem;display:flex}.name{font-weight:600}.headline{margin:.25rem 0 .5rem}.bar-row{grid-template-columns:minmax(6rem,1fr) 3fr 3.5rem;align-items:center;gap:.6rem;margin:.25rem 0;font-size:.9rem;display:grid}.bar-label{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.bar{background:#ececf0;border-radius:3px;height:.6rem;overflow:hidden}.fill{background:var(--accent);height:100%}.bar-val{text-align:right;color:var(--muted);font-variant-numeric:tabular-nums}.usage{color:var(--muted);margin-top:.75rem;font-size:.85rem}.login{max-width:380px;margin:4rem auto}.after{gap:1rem;margin-top:1rem;display:grid}.route{border:1px solid var(--line);border-left:4px solid var(--accent);background:#f9fafc;border-radius:8px;padding:.9rem 1rem}.route-head{font-size:1.05rem;font-weight:650}.route-model{font-family:var(--mono);color:var(--muted);margin:.15rem 0 .5rem;font-size:.9rem}.route-reasons{margin:0;padding-left:1.1rem;font-size:.92rem}.route-reasons li{margin:.15rem 0}.route select{width:auto;max-width:100%}.route .row{margin-top:.9rem}.caveat{color:#7a4b00;background:#fff7e6;border:1px solid #f5d9a8;border-radius:6px;margin-top:.6rem;padding:.5rem .7rem;font-size:.9rem}.reply{border:1px solid var(--line);border-radius:8px;padding:.9rem 1rem}.reply-head{margin-bottom:.5rem;font-weight:600}.reply details{margin-top:.6rem}.reply summary{cursor:pointer;color:var(--muted);font-size:.9rem}.stats{background:var(--card);border:1px solid var(--line);z-index:5;border-radius:10px;padding:.45rem .8rem;font-size:.82rem;position:fixed;top:3.9rem;right:1rem;box-shadow:0 2px 8px #0000000f}.stats[open]{width:22rem;padding-bottom:.6rem}.stats-head{cursor:pointer;white-space:nowrap;-webkit-user-select:none;user-select:none;align-items:baseline;gap:.6rem;list-style:none;display:flex}.stats-head::-webkit-details-marker{display:none}.stats-head:after{content:"▾";color:var(--muted);margin-left:auto;font-size:.75rem}.stats[open] .stats-head:after{content:"▴"}.stats:not([open]) .stats-title{display:none}.stats[open] .stats-head{margin-bottom:.35rem}.stats-title{font-weight:650}.stats-total{font-variant-numeric:tabular-nums;font-weight:600}.stats-body{max-height:55vh;overflow:auto}.stats-run{border-top:1px solid var(--line);padding:.35rem 0}.stats-run-head{grid-template-columns:1fr auto auto;gap:.6rem;font-weight:600;display:grid}.stats-label{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.stats-val{font-variant-numeric:tabular-nums;color:var(--muted);text-align:right;font-weight:500}.stats-call{color:var(--muted);overflow-wrap:anywhere;margin-top:.1rem;font-size:.75rem}.stats-last{color:var(--muted);border-top:1px solid var(--line);padding-top:.35rem;font-size:.75rem}.stats-last button{font-size:inherit}@media (width<=1100px){.stats{width:auto;max-width:760px;box-shadow:none;margin:1.25rem auto 0;position:static}main{margin-top:1rem}}@media (width<=1480px){body:has(main.wide) .stats{width:auto;max-width:1040px;box-shadow:none;margin:1.25rem auto 0;position:static}}.md{overflow-wrap:anywhere;line-height:1.55}.md>:first-child{margin-top:0}.md>:last-child{margin-bottom:0}.md p{margin:.5rem 0}.md h1,.md h2,.md h3,.md h4{margin:.9rem 0 .3rem;font-size:1rem}.md ul,.md ol{margin:.4rem 0;padding-left:1.3rem}.md li{margin:.15rem 0}.md code{font-family:var(--mono);background:#f1f1f4;border-radius:3px;padding:.1em .3em;font-size:.88em}.md pre{background:#f1f1f4;border-radius:6px;margin:.6rem 0;padding:.75rem;font-size:.85rem;overflow:auto}.md pre code{font-size:inherit;background:0 0;padding:0}.md table{border-collapse:collapse;margin:.6rem 0;font-size:.9rem}.md th,.md td{border:1px solid var(--line);text-align:left;padding:.3rem .55rem}.md blockquote{border-left:3px solid var(--line);color:var(--muted);margin:.6rem 0;padding-left:.8rem}.md.muted{color:var(--muted);font-size:.9rem}.md a{color:var(--accent)}.prose h2{margin:2rem 0 .5rem;font-size:1.2rem}.prose h3{margin:1.25rem 0 .25rem;font-size:1rem}.prose p{margin:.5rem 0}.prose ul{padding-left:1.3rem}.prose li{margin:.35rem 0}.prose code{font-family:var(--mono);background:#f1f1f4;border-radius:3px;padding:.1em .3em;font-size:.88em}.prose pre{background:#f1f1f4;border-radius:6px;margin:.6rem 0 1rem;padding:.75rem .9rem;font-size:.85rem;line-height:1.5;overflow:auto}.prose table{border-collapse:collapse;width:100%;margin:.75rem 0 1rem;font-size:.92rem}.prose th,.prose td{border:1px solid var(--line);text-align:left;vertical-align:top;padding:.45rem .6rem}.prose th{background:#f4f4f6;font-weight:600}.prose td:first-child{white-space:nowrap;font-weight:600}.cta-grid{grid-template-columns:1fr 1fr;gap:1rem;display:grid}.cta-grid .card{margin:0}.sources{border-top:1px solid var(--line);color:var(--muted);margin:2.5rem 0 1rem;padding-top:1rem;font-size:.85rem}.sources a{color:var(--muted)}@media (width<=560px){.cta-grid{grid-template-columns:1fr}.prose td:first-child{white-space:normal}}.cta-grid .card h2{margin:0 0 .25rem;font-size:1.1rem}.prose code{white-space:nowrap}main.wide{max-width:1040px}.tw-top{color:var(--muted);justify-content:space-between;align-items:center;gap:1rem;margin:0 0 1rem;font-size:.9rem;display:flex}.pill{border:1px solid var(--line);color:var(--fg);white-space:nowrap;background:#fff;border-radius:999px;align-items:center;gap:.45rem;padding:.2rem .7rem;font-size:.8rem;display:inline-flex}.pill:before{content:"";background:#e0a100;border-radius:50%;width:.5rem;height:.5rem}.pill.err{color:var(--err)}.tw-grid{grid-template-columns:340px 1fr;align-items:start;gap:2rem;display:grid}.tw-input{min-height:14rem;font-size:1rem;line-height:1.5}.chips{flex-wrap:wrap;gap:.4rem;margin-top:.75rem;display:flex}.chip{border:1px solid var(--line);font:inherit;cursor:pointer;background:#fff;border-radius:999px;padding:.25rem .7rem;font-size:.82rem}.chip:hover{border-color:var(--fg)}.tw-group{align-items:baseline;gap:.6rem;margin:1.1rem 0 .4rem;display:flex}.tw-group:first-child{margin-top:0}.tw-group-title{letter-spacing:.08em;text-transform:uppercase;font-size:.72rem;font-weight:700}.tw-group-hint{color:var(--muted);font-size:.8rem}.tw-row{grid-template-columns:11rem 1fr 10rem;align-items:center;gap:.9rem;padding:.38rem 0;display:grid}.tw-label{color:#555;font-size:.92rem}.tw-bar{background:#ececf0;border-radius:3px;height:6px;overflow:hidden}.tw-fill{background:#b9b9c2;border-radius:3px;width:0;height:100%;transition:width .35s}.tw-bar.yes .tw-fill{background:#55555e}.tw-bar.strong .tw-fill{background:var(--fg)}.tw-value{text-align:right;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap;font-size:.9rem}.tw-value.strong{color:var(--fg);font-weight:600}.tw-foot{color:var(--muted);margin-top:1.5rem;font-size:.82rem}.tw-questions{margin-top:.75rem}.tw-questions summary{cursor:pointer;color:var(--muted);font-size:.85rem}.tw-questions pre{background:#f1f1f4;border-radius:6px;margin:.5rem 0 0;padding:.75rem;font-size:.8rem;overflow:auto}@media (width<=800px){.tw-grid{grid-template-columns:1fr}.tw-row{grid-template-columns:8rem 1fr 7rem}}.snake-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1rem;display:flex}.toolbar{border:1px solid var(--line);border-radius:8px;display:inline-flex;overflow:hidden}.toolbar button{font:inherit;cursor:pointer;border:0;border-right:1px solid var(--line);background:#fff;padding:.4rem .85rem;font-size:.88rem}.toolbar button:last-child{border-right:0}.toolbar button.active{background:var(--fg);color:#fff}.snake-controls{flex-wrap:wrap;align-items:center;gap:.5rem;display:flex}.speed{color:var(--muted);align-items:center;gap:.45rem;margin:0 .5rem 0 0;font-size:.85rem;font-weight:500;display:inline-flex}.speed input{width:7rem;accent-color:var(--fg);margin:0;padding:0}.speed-val{font-variant-numeric:tabular-nums;min-width:6.5rem;color:var(--fg)}.snake-grid{grid-template-columns:512px 1fr;align-items:start;gap:1.5rem;display:grid}.snake-canvas{border:1px solid var(--line);cursor:crosshair;background:#fafafa;border-radius:8px;width:100%;max-width:512px;height:auto;display:block}.dir-row{border-top:1px solid var(--line);grid-template-columns:3.4rem 1fr 6.5rem 3rem;align-items:center;gap:.7rem;padding:.5rem 0;font-size:.9rem;display:grid}.dir-row:first-child{border-top:0}.dir-name{font-family:var(--mono)}.dir-row.chosen .dir-name{font-weight:700}.dir-desc{color:var(--muted);font-size:.8rem;line-height:1.35}.dir-desc.fatal{color:var(--err)}.dir-pct{text-align:right;color:var(--muted);font-variant-numeric:tabular-nums}.dir-row.chosen .dir-pct{color:var(--fg);font-weight:600}.hud{color:var(--muted);flex-wrap:wrap;gap:1.2rem;margin-top:1rem;font-size:.85rem;display:flex}.hud b{color:var(--fg);font-weight:600}@media (width<=900px){.snake-grid{grid-template-columns:1fr}}