:root{color-scheme:dark;--ink:#f5f2e8;--muted:#aab3ad;--night:#0b1110;--panel:#151c19;--line:#344039;--lime:#c9f45b;--mint:#70d7aa;--red:#f05a67;--display:"Arial Black","Helvetica Neue",Arial,sans-serif;--body:Inter,system-ui,sans-serif}*{box-sizing:border-box}html{min-width:280px;background:var(--night)}body{margin:0;color:var(--ink);background:radial-gradient(circle at 80% 4%,rgba(112,215,170,.1),transparent 28rem),var(--night);font-family:var(--body);line-height:1.5}a{color:inherit}.site-header,main,footer{width:min(980px,calc(100% - 36px));margin:auto}.site-header{display:flex;align-items:center;justify-content:space-between;min-height:78px;border-bottom:1px solid var(--line)}.brand{display:flex;gap:10px;align-items:center;font-weight:850;text-decoration:none}.brand span{display:grid;width:34px;aspect-ratio:1;place-items:center;color:var(--night);background:var(--lime);border-radius:9px;font-family:var(--display)}.site-header p{margin:0;color:var(--muted);font-size:.7rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase}.intro{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:end;padding:50px 0 30px}.intro>p{margin:0;color:var(--muted)}.eyebrow{margin:0 0 8px;color:var(--mint);font-size:.72rem;font-weight:850;letter-spacing:.16em;text-transform:uppercase}h1,h2,p{margin-top:0}h1{margin-bottom:0;font:clamp(3.5rem,9vw,6rem)/.85 var(--display);letter-spacing:-.07em}.game-shell{width:min(680px,100%);margin:auto;padding:14px;background:var(--panel);border:1px solid var(--line);border-radius:18px}.toolbar{display:flex;gap:12px;align-items:center;justify-content:space-between;margin-bottom:10px}.toolbar label{display:grid;color:var(--muted);font-size:.58rem;font-weight:850;letter-spacing:.1em;text-transform:uppercase}.toolbar select,.toolbar button{min-height:40px;padding:0 12px;color:var(--ink);background:#101613;border:1px solid #526157;border-radius:8px;font:800 .75rem var(--body)}.toolbar button{cursor:pointer}.toolbar button:hover,.toolbar button:focus-visible{color:var(--night);background:var(--lime)}.counts{display:flex;gap:14px;color:var(--muted);font-size:.75rem}.counts span{display:flex;align-items:center;gap:5px}.dot{width:12px;aspect-ratio:1;border-radius:50%}.dot.red{background:var(--red)}.dot.black{background:#202b31;border:1px solid #71808a}.status{min-height:24px;margin:0 0 10px;color:var(--muted);font-size:.78rem;text-align:center}.board{display:grid;grid-template-columns:repeat(8,1fr);width:100%;aspect-ratio:1;overflow:hidden;border:6px solid #453b31;border-radius:10px;touch-action:manipulation}.square{position:relative;display:grid;padding:0;place-items:center;background:#d5c8a9;border:0}.square.dark{background:#486657;cursor:pointer}.square:focus-visible{z-index:2;outline:3px solid white;outline-offset:-3px}.piece{display:grid;width:72%;aspect-ratio:1;place-items:center;border-radius:50%;box-shadow:inset 0 -7px 0 rgba(0,0,0,.22),0 3px 6px rgba(0,0,0,.32)}.piece.red{background:var(--red);border:3px solid #ff9ba1}.piece.black{background:#202a30;border:3px solid #71808a}.piece.king::after{content:"★";color:var(--lime);font-size:clamp(.7rem,4vw,1.7rem);text-shadow:0 1px 2px #000}.square.selectable::before{content:"";position:absolute;width:84%;aspect-ratio:1;border:3px solid var(--lime);border-radius:50%}.square.selected .piece{transform:translateY(-4px);outline:4px solid var(--lime)}.square.destination::after{content:"";position:absolute;width:24%;aspect-ratio:1;background:var(--lime);border-radius:50%;box-shadow:0 0 0 5px rgba(201,244,91,.2)}.rules{display:grid;grid-template-columns:1fr 1.2fr;gap:60px;padding:70px 0}.rules h2{font:clamp(2rem,5vw,3.5rem)/.95 var(--display);letter-spacing:-.05em}.rules p{color:var(--muted)}footer{display:flex;justify-content:space-between;padding:24px 0 38px;border-top:1px solid var(--line);color:var(--muted);font-size:.78rem}footer a{font-weight:800;text-decoration:none}footer p{margin:0}@media(max-width:620px){.intro{display:block;padding:36px 0 24px}.intro>p{margin-top:16px}.game-shell{padding:9px}.toolbar{display:grid;grid-template-columns:1fr auto}.counts{grid-row:2;grid-column:1/-1;justify-content:center}.board{border-width:4px}.rules{display:block;padding:46px 0}.rules>div+div{margin-top:22px}footer{display:block}footer p{margin-top:8px}}