:root{
  /* Sampled from typesafe.ai: sage ground, near-black ink, off-white panels,
     no radius, no rules. The teal is the accent from their hero artwork. */
  --ink:#1E1E1E; --paper:#ABBAB9; --surface:#FEFEFE; --surface-2:#C3CFCE;
  --line:#8D9E9D; --slate:#3A4241; --muted:#5F6B6A;
  --teal:#0F8C80; --teal-soft:#D3E4E2; --ochre:#8A6A28; --ochre-soft:#E2DECC;
  --rust:#8C3A2B; --rust-soft:#E4D3CF;
  --grid:#9CACAB;
  --mark-bg:#0B6F66; --mark-fg:#FFFFFF;
  --shadow:none;
}
:root:not([data-theme="light"]){ @media (prefers-color-scheme:dark){
  --ink:#ECEFEE; --paper:#141817; --surface:#1D2322; --surface-2:#262E2D;
  --line:#3A4544; --slate:#B3BDBC; --muted:#8B9897;
  --teal:#3FBFB0; --teal-soft:#18302D; --ochre:#C9A257; --ochre-soft:#2C2718;
  --rust:#CC7B68; --rust-soft:#2E1C18;
  --grid:#2B3433;
  --mark-bg:#3FBFB0; --mark-fg:#0E1A19;
  --shadow:none;
}}
:root[data-theme="dark"]{
  --ink:#ECEFEE; --paper:#141817; --surface:#1D2322; --surface-2:#262E2D;
  --line:#3A4544; --slate:#B3BDBC; --muted:#8B9897;
  --teal:#3FBFB0; --teal-soft:#18302D; --ochre:#C9A257; --ochre-soft:#2C2718;
  --rust:#CC7B68; --rust-soft:#2E1C18;
  --grid:#2B3433;
  --mark-bg:#3FBFB0; --mark-fg:#0E1A19;
  --shadow:none;
}
/* The board keeps one palette in both themes: a buff light square and a
   mid-tone sage dark square, chosen so black and white pieces both read
   against either one. */
:root{ --board-light:#E4E0D3; --board-dark:#6E8B84; --board-edge:#4A5E59;
       --piece-dark:#131514; --piece-light:#FCFCFA; --mark:#C8A23C; }
*{box-sizing:border-box}
body{background:var(--paper);color:var(--ink);font-family:"Host Grotesk","Helvetica Neue",Helvetica,Arial,sans-serif;font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}
.wrap{max-width:1120px;margin:0 auto;padding-inline:16px;padding-block:32px 72px}
h1,h2,h3{font-family:"Host Grotesk","Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:500;text-wrap:balance;margin:0;letter-spacing:-.02em}
h1{font-size:clamp(2.3rem,6.2vw,4.2rem);line-height:.97;letter-spacing:-.035em}
h2{font-size:clamp(1.5rem,3.4vw,2.3rem);line-height:1.08;margin-bottom:6px;letter-spacing:-.028em}
h3{font-size:1.02rem;font-weight:600;letter-spacing:-.012em}
p{margin:0 0 12px}
.lede{font-size:1.06rem;color:var(--slate);max-width:64ch}
.eyebrow{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:.68rem;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--ink);background:var(--surface-2);display:inline-block;padding:3px 8px}
.mono{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums}
.num{font-family:"JetBrains Mono",ui-monospace,monospace;font-variant-numeric:tabular-nums}
header.masthead{border-bottom:1px solid var(--ink);padding-bottom:26px;margin-bottom:36px}
.masthead .meta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:16px;font-size:.78rem;color:var(--muted)}
.masthead .meta span{font-family:"JetBrains Mono",ui-monospace,monospace}
section{margin-block:46px;scroll-margin-top:16px}
.section-head{margin-bottom:18px}
.section-head p{color:var(--slate);max-width:68ch;margin:6px 0 0}

/* verdict */
.verdict{background:var(--surface);border-left:4px solid var(--teal);padding:24px 26px}
.verdict h2{margin-bottom:8px}
.verdict p{color:var(--slate);max-width:70ch;margin-bottom:0}
.verdict strong{color:var(--ink);font-weight:600}

/* stat strip */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line);margin-top:24px}
.stat{background:var(--surface);padding:16px 18px}
.stat .k{font-size:.72rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);font-weight:600}
.stat .v{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:1.7rem;font-weight:600;line-height:1.2;margin-top:4px;font-variant-numeric:tabular-nums}
.stat .s{font-size:.78rem;color:var(--slate);margin-top:2px}
.v.good{color:var(--teal)} .v.warn{color:var(--ochre)} .v.bad{color:var(--rust)}

/* cards + charts */
.grid{display:grid;gap:18px}
.grid.two{grid-template-columns:repeat(auto-fit,minmax(330px,1fr))}
.card{background:var(--surface);padding:20px 22px 22px}
.card h3{margin-bottom:2px}
.card .note{font-size:.82rem;color:var(--muted);margin:0 0 14px}
.chart-box{position:relative;height:290px}
.chart-box.tall{height:360px}

/* table */
.table-scroll{overflow-x:auto;background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:720px;font-size:.88rem}
th,td{padding:11px 14px;text-align:right;border-bottom:1px solid var(--line);white-space:nowrap}
th:first-child,td:first-child{text-align:left}
thead th{font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600;background:var(--surface-2)}
tbody tr:last-child td{border-bottom:none}
tbody tr.highlight td{background:var(--teal-soft)}
td.n{font-family:"JetBrains Mono",ui-monospace,monospace;font-variant-numeric:tabular-nums}
.policy-name{display:flex;align-items:center;gap:9px}
.swatch{width:9px;height:9px;flex:none}
.pill{display:inline-block;padding:2px 8px;border-radius:0;font-size:.72rem;font-weight:600;font-family:"JetBrains Mono",ui-monospace,monospace}
.pill.good{background:var(--teal-soft);color:var(--teal)}
.pill.warn{background:var(--ochre-soft);color:var(--ochre)}
.pill.bad{background:var(--rust-soft);color:var(--rust)}

/* elo rails */
.elo-row{padding:16px 0;border-bottom:1px solid var(--line)}
.elo-row:last-child{border-bottom:none}
.elo-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:10px}
.elo-title{font-weight:600}
.elo-title .vs{color:var(--muted);font-weight:400}
.elo-score{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:.85rem;color:var(--slate)}
.rail{position:relative;height:38px;background:var(--surface-2);border-radius:0;overflow:hidden}
.rail .zero{position:absolute;top:0;bottom:0;width:1px;background:var(--line)}
.rail .zero::after{content:"0";position:absolute;top:2px;left:4px;font-size:.66rem;color:var(--muted);font-family:"JetBrains Mono",monospace}
.rail .ci{position:absolute;top:12px;height:14px;background:var(--teal);opacity:.28}
.rail .point{position:absolute;top:8px;width:3px;height:22px;background:var(--teal)}
.rail.negative .ci,.rail.negative .point{background:var(--rust)}
.elo-foot{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:8px;font-size:.78rem;color:var(--muted)}
.elo-foot .mono{color:var(--slate)}

/* board */
.replay{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:22px;align-items:start}
@media (max-width:760px){.replay{grid-template-columns:1fr}}
.board-frame{max-width:440px;width:100%}
.board{display:grid;grid-template-columns:repeat(8,1fr);aspect-ratio:1;max-width:100%}
.sq{display:flex;align-items:center;justify-content:center;font-size:clamp(22px,5.6vw,44px);line-height:1;user-select:none;position:relative;aspect-ratio:1}
.sq.light{background:var(--board-light)} .sq.dark{background:var(--board-dark)}
.sq.from::after,.sq.to::after{content:"";position:absolute;inset:0;background:var(--mark);opacity:.42;pointer-events:none}
.sq .glyph{position:relative;z-index:1}
/* Both colours use the solid glyphs; the stroke is what separates a white
   piece from a light square and a black piece from a dark one. */
.sq .glyph.b{color:var(--piece-dark);-webkit-text-stroke:.8px rgba(252,252,250,.55);paint-order:stroke fill}
.sq .glyph.w{color:var(--piece-light);-webkit-text-stroke:1.1px var(--piece-dark);paint-order:stroke fill}
.sq .coord{position:absolute;font-family:"JetBrains Mono",ui-monospace,monospace;font-size:9px;font-weight:500;line-height:1;opacity:.62;z-index:2}
.sq .coord.file{right:3px;bottom:2px} .sq .coord.rank{left:3px;top:2px}
.sq.light .coord{color:var(--board-edge)} .sq.dark .coord{color:var(--board-light)}
.board-meta{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:10px;font-size:.8rem;color:var(--slate);flex-wrap:wrap}
.controls{display:flex;gap:6px;margin-top:12px;flex-wrap:wrap}
button{font:inherit;font-size:.82rem;font-weight:500;padding:8px 14px;border:1px solid var(--ink);background:var(--surface);color:var(--ink);border-radius:0;cursor:pointer;transition:background .12s,color .12s}
button:hover{background:var(--ink);color:var(--surface)}
button:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
button.primary{background:var(--ink);border-color:var(--ink);color:var(--surface)}
button.primary:hover{background:var(--teal);border-color:var(--teal);color:#fff}
select{font:inherit;font-size:.82rem;padding:8px 10px;border:1px solid var(--ink);background:var(--surface);color:var(--ink);border-radius:0;max-width:100%}
select:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.moves{background:var(--surface);max-height:420px;overflow-y:auto;font-family:"JetBrains Mono",ui-monospace,monospace;font-size:.82rem}
.move-row{display:grid;grid-template-columns:36px 1fr 1fr;border-bottom:1px solid var(--line)}
.move-row:last-child{border-bottom:none}
.move-row .no{color:var(--muted);padding:5px 8px;background:var(--surface-2)}
.move-row .m{padding:5px 8px;cursor:pointer}
.move-row .m:hover{background:var(--surface-2)}
.move-row .m.active{background:var(--ink);color:var(--surface)}
.game-pick{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;align-items:center}
.game-pick label{font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.07em;font-weight:600}

/* two-architecture panel */
.arch{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);margin-top:14px}
.arch-col{background:var(--surface-2);padding:14px 16px}
.arch-col p{margin:0;font-size:.88rem;color:var(--slate)}
.arch-title{font-weight:600;margin-bottom:6px}
@media (max-width:620px){.arch{grid-template-columns:1fr}}

/* verdict marks: a measurement, never a mood */
.verdict{display:inline-flex;align-items:center;gap:5px;padding:2px 8px;font-family:"JetBrains Mono",ui-monospace,monospace;font-size:.72rem;font-weight:600;white-space:nowrap}
.verdict .mark{font-size:.85rem;line-height:1}
/* The page is mostly negative results, so the one mark worth finding while
   scanning is the star. It is the only filled chip here; everything else
   stays quiet so the contrast does the work. */
.verdict.up{background:var(--mark-bg);color:var(--mark-fg);padding:3px 10px;font-size:.76rem;letter-spacing:.02em}
.verdict.up .mark{font-size:1rem}
.verdict.flat{background:var(--ochre-soft);color:var(--ochre)}
.verdict.down{background:var(--rust-soft);color:var(--rust)}
.verdict.ref{background:transparent;color:var(--muted);padding-left:0}
/* A starred row is findable without reading the last column. */
tbody tr.won td{background:var(--teal-soft)}
tbody tr.won td:first-child{box-shadow:inset 3px 0 0 var(--teal)}
h3 .verdict.up{position:relative;top:-1px}
h3 .verdict{margin-left:10px;vertical-align:middle}
/* A sentence with chips in it, not a row of flex items: laying this out with
   flex made every text fragment its own item and broke the reading order. */
.legend{margin-top:14px;font-size:.82rem;line-height:2;color:var(--slate);max-width:74ch}
.legend .verdict{font-size:.68rem;vertical-align:middle;margin:0 2px}

/* glossary */
.glossary{display:grid;grid-template-columns:auto 1fr;gap:10px 22px;margin:0}
.glossary dt{font-weight:600;white-space:nowrap}
.glossary dd{margin:0;color:var(--slate)}
.glossary dd .mono{display:inline-block;font-size:.72rem;color:var(--muted);background:var(--surface-2);padding:1px 6px;margin-left:4px}
@media (max-width:620px){
  .glossary{grid-template-columns:1fr;gap:4px}
  .glossary dt{margin-top:10px}
  .glossary dt:first-child{margin-top:0}
}

/* footnote */
.method{background:var(--surface);padding:22px 24px;font-size:.87rem;color:var(--slate)}
.method h3{color:var(--ink);margin-bottom:8px}
.method dl{display:grid;grid-template-columns:auto 1fr;gap:5px 16px;margin:12px 0 0}
.method dt{font-weight:600;color:var(--ink);font-size:.8rem}
.method dd{margin:0;font-family:"JetBrains Mono",ui-monospace,monospace;font-size:.8rem;word-break:break-all}
.caveat{border-left:3px solid var(--ochre);padding:2px 0 2px 14px;margin:14px 0;color:var(--slate)}
a{color:var(--ink);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--teal)}

/* colophon */
.colophon{margin-top:52px;padding-top:26px;border-top:1px solid var(--ink);display:flex;flex-wrap:wrap;align-items:center;gap:16px 22px;justify-content:space-between}
.byline{display:flex;align-items:center;gap:12px;min-width:0;text-decoration:none;color:inherit}
.byline:hover .name{color:var(--teal)}
.byline img{width:40px;height:40px;object-fit:cover;flex:none;display:block;filter:grayscale(1);transition:filter .18s}
.byline:hover img{filter:grayscale(0)}
.byline .who{min-width:0}
.byline .name{font-weight:600;font-size:.92rem;letter-spacing:-.01em}
.byline .role{font-size:.78rem;color:var(--muted)}
.social{display:flex;gap:8px;flex-wrap:wrap}
.social a{display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border:1px solid var(--ink);font-size:.8rem;font-weight:500;text-decoration:none;color:var(--ink);transition:background .12s,color .12s}
.social a:hover{background:var(--ink);color:var(--surface)}
.social a:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.social svg{width:14px;height:14px;fill:currentColor;flex:none}
@media (max-width:520px){.colophon{flex-direction:column;align-items:flex-start}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}