:root{color-scheme:light;--ink:#202d38;--muted:#637078;--paper:#f5f4ef;--accent:#245c50;--line:#dce2dd;--soft:#edf2ef;--radius:22px;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper)}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-underline-offset:4px}.shell{max-width:1200px;margin:auto;padding:32px clamp(16px,4vw,56px)}.header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-bottom:30px;border-bottom:1px solid var(--line);margin-bottom:56px}.brand{display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:24px;font-weight:750;text-decoration:none}.brand-icon{display:grid;place-items:center;background:var(--accent);color:white;width:40px;height:40px;border-radius:12px}.byline{font-size:12px;font-weight:400;color:var(--muted)}nav{display:flex;gap:8px}nav a{padding:10px 16px;border-radius:24px;text-decoration:none;font-size:14px}nav [aria-current]{background:var(--ink);color:white}.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.16em;color:var(--accent);font-weight:750;margin:0 0 16px}h1{font-size:clamp(36px,5vw,60px);line-height:1.06;letter-spacing:-.045em;margin:0 0 24px;font-weight:650}h2{font-size:20px;margin:0}p{line-height:1.7}.muted,.intro>p:not(.eyebrow){color:var(--muted)}.game-layout{display:grid;grid-template-columns:1fr 1.18fr;gap:clamp(28px,6vw,80px);align-items:start}.intro{padding-top:24px}.tip{border-left:3px solid var(--accent);padding-left:18px;margin:32px 0;color:var(--muted);font-size:14px}.tip strong{color:var(--ink)}.tip p{margin:6px 0}.card{background:white;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 32px #20382906}.game-card{padding:clamp(12px,3vw,28px)}.card-heading{display:flex;justify-content:space-between;align-items:center;margin:0 0 20px}.card-heading span{font-size:13px;color:var(--muted)}.board{border-collapse:collapse;table-layout:fixed;width:100%;border:2px solid var(--ink)}.board td{width:11.111%;height:auto;aspect-ratio:1;padding:0;border:1px solid #d1dad6;text-align:center;font-size:clamp(18px,3vw,27px);font-weight:600}.board td:nth-child(3n){border-right:2px solid var(--ink)}.board tr:nth-child(3n) td{border-bottom:2px solid var(--ink)}.given{background:var(--soft)}.board input{width:100%;aspect-ratio:1;min-width:0;border:0;border-radius:0;padding:0;background:transparent;text-align:center;font:inherit;font-weight:450;color:var(--accent)}.board td:not(:has(input)){height:clamp(30px,5vw,52px)}.board .invalid{background:#ffe3dc;color:#a12b18}.board input:focus{outline:3px solid var(--accent);outline-offset:-3px;background:#e1f0e9}.actions{display:flex;justify-content:space-between;gap:12px;margin-top:24px}button,input,select{font:inherit}button{cursor:pointer;background:var(--accent);color:white;border:1px solid transparent;border-radius:10px;padding:12px 18px;font-size:14px;font-weight:600;min-height:44px}button:hover{filter:brightness(.9)}.secondary{border-color:var(--line);background:white;color:var(--ink)}.text-button{background:transparent;color:var(--muted)}:focus-visible{outline:3px solid #b97922;outline-offset:3px}.notice{background:#e5eee6;border:1px solid #bdcfbf;padding:16px 20px;border-radius:12px;margin-bottom:32px}.filters{display:flex;flex-wrap:wrap;align-items:end;gap:16px;margin:32px 0}.filters label{display:grid;gap:8px;font-size:13px;color:var(--muted)}select,.score-entry input{border:1px solid var(--line);background:white;padding:10px 12px;border-radius:8px;min-height:44px;color:var(--ink)}.leaderboards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.ranking{padding:24px 18px}.ranking h2{padding:0 6px 20px}.scores{width:100%;border-collapse:collapse;text-align:left;font-size:14px}.scores th{font-size:11px;text-transform:uppercase;color:var(--muted);padding:10px 6px;letter-spacing:.05em}.scores td{padding:12px 6px;border-top:1px solid var(--line)}.rank{color:var(--accent);font-weight:700}.scores small{display:block;color:var(--muted);font-size:11px;margin-top:4px}.player{overflow-wrap:anywhere}.time{white-space:nowrap;font-variant-numeric:tabular-nums}.empty{padding:32px 8px;color:var(--muted);text-align:center}.score-entry{display:flex;gap:8px;margin-top:8px}.score-entry input{width:100%;min-width:0}.result-time{font-variant-numeric:tabular-nums}footer{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:64px;padding-top:24px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.table-scroll{overflow:auto}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:900px){.byline{display:none}.leaderboards{grid-template-columns:1fr}.game-layout{gap:28px}.ranking{padding:24px}}@media(max-width:640px){.header{gap:12px;margin-bottom:32px;padding-bottom:24px}.brand{font-size:20px;gap:8px}.brand-icon{width:32px;height:32px}nav a{padding:10px;font-size:13px}.game-layout{grid-template-columns:1fr}.intro{padding-top:0}.tip{margin:20px 0}.intro h1 br{display:none}.board td{font-size:23px}.board td:not(:has(input)){height:calc((100vw - 64px)/9)}footer{margin-top:40px}}