:root{--green:#123f31;--green2:#1d5443;--ivory:#f5f0e5;--card:#fffdf8;--gold:#e9ce89;--goldt:#6f5626;--text:#172b23;--muted:#5f6b64;--line:#e3e2d6;--l:#f0e6cf;--d:#8fae8b;--hl:#f3df8f;--hd:#c9c16a}
@media (prefers-color-scheme:dark){:root{--ivory:#0f1f19;--card:#16291f;--text:#ece6d6;--muted:#a4b1a6;--line:#2a3d33;--goldt:#e9ce89}}
*{box-sizing:border-box}
body{margin:0;background:var(--ivory);color:var(--text);font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;-webkit-text-size-adjust:100%}
.wrap{max-width:880px;margin:0 auto;padding:0 16px}
a{color:var(--green2)}@media (prefers-color-scheme:dark){a{color:var(--gold)}}
.top{background:var(--green);color:#fff8e8;position:sticky;top:0;z-index:5}
.bar{display:flex;align-items:center;gap:14px;min-height:56px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px}
.brand{color:#fff8e8;text-decoration:none;font:700 20px Georgia,serif;display:inline-flex;align-items:center;gap:8px}.brand img{width:32px;height:32px;border-radius:8px}.brand b{color:var(--gold)}
.top nav{display:flex;gap:14px;flex:1;overflow-x:auto;white-space:nowrap;scrollbar-width:none}.top nav a{color:#c9d6c9;text-decoration:none;font-size:15px}.top nav a:hover{color:#fff}
h1,h2,h3{font-family:Georgia,serif;line-height:1.25}h1{font-size:34px;margin:.4em 0 .3em}h2{font-size:24px;margin:1.6em 0 .5em;color:var(--green2)}h3{font-size:19px}
@media (prefers-color-scheme:dark){h2{color:var(--gold)}}
.lead{font-size:19px;color:var(--muted)}.muted{color:var(--muted)}.small{font-size:13px}
.crumbs{font-size:14px;color:var(--muted);padding-top:16px}.crumbs a{color:var(--muted)}
.btn{display:inline-block;background:var(--gold);color:var(--green);font-weight:700;padding:11px 18px;border-radius:999px;text-decoration:none;margin:4px 6px 4px 0}
.btn.small{padding:7px 14px;font-size:14px;margin:0}.btn.ghost{background:transparent;color:inherit;border:1.5px solid var(--gold)}
.answer{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:12px;padding:4px 18px 8px;margin:18px 0}
.answer h2{margin-top:.6em;font-size:20px}
.facts{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:15px;color:var(--muted)}
.keys li{margin:.4em 0}
.board{width:100%;max-width:360px;height:auto;display:block;border-radius:6px;box-shadow:0 2px 10px rgba(0,0,0,.15)}
.board .l{fill:var(--l)}.board .d{fill:var(--d)}.board .hl{fill:var(--hl)}.board .hd{fill:var(--hd)}
.board .coords text{font:600 9px sans-serif;fill:#123f31;opacity:.7}
.pz{display:flex;gap:20px;flex-wrap:wrap;align-items:flex-start}.pz .board{flex:1 1 300px}.pzinfo{flex:1 1 260px}
.puzzle{border-top:1px solid var(--line);padding-top:6px;margin-top:20px}
details{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin:10px 0}summary{cursor:pointer;font-weight:600}
.sol{font:600 17px ui-monospace,SFMono-Regular,Menlo,monospace;margin:.5em 0}
code{font-size:12px;word-break:break-all}
.exs{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}.ex{margin:0}.ex figcaption{font-size:15px;margin-top:8px}
.cols{columns:2 280px;column-gap:28px;padding-left:18px}.cols li{break-inside:avoid;margin:.25em 0}
.tags{display:flex;flex-wrap:wrap;gap:8px}.tags a{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:5px 12px;text-decoration:none;font-size:15px}
table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto}th,td{text-align:left;padding:7px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.barc{background:var(--line);border-radius:6px;height:10px;min-width:120px}.barc div{background:var(--green2);height:10px;border-radius:6px}
.pager{display:flex;justify-content:space-between;gap:12px;margin:28px 0;font-size:15px}
.cta{background:var(--green);color:#fff8e8;border-radius:20px;padding:6px 22px 18px;margin:44px 0 20px}.cta h2{color:#fff8e8}.cta em{color:var(--gold);font-style:normal}.cta .btn.ghost{color:#fff8e8}
footer{border-top:1px solid var(--line);padding:18px 16px 40px;font-size:14px;color:var(--muted)}
@media (max-width:560px){h1{font-size:28px}.top nav{order:3;width:100%;flex-basis:100%}}