:root{color-scheme:dark;--ink:#f5f2e8;--muted:#abb5b0;--night:#07100e;--panel:#121d19;--line:#30483e;--lime:#c9f35e;--amber:#f0bd58;--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{min-height:100vh;margin:0;color:var(--ink);background:radial-gradient(circle at 85% 5%,rgba(240,189,88,.11),transparent 30rem),var(--night);font-family:var(--body);line-height:1.5}button{color:inherit;font:inherit}a{color:inherit}.site-header,main,footer{width:min(1120px,calc(100% - 32px));margin-inline:auto}.site-header{display:flex;align-items:center;justify-content:space-between;min-height:76px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-weight:900;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,.eyebrow{margin:0;color:var(--amber);font-size:.69rem;font-weight:900;letter-spacing:.15em;text-transform:uppercase}.intro{display:grid;grid-template-columns:1fr minmax(260px,430px);gap:48px;align-items:end;padding:46px 0 28px}.intro h1{margin:7px 0 0;font:clamp(3.5rem,8vw,6rem)/.82 var(--display);letter-spacing:-.07em}.intro>p{margin:0;color:var(--muted)}.game-shell{overflow:hidden;background:var(--panel);border:1px solid var(--line);border-radius:20px}.toolbar{display:grid;grid-template-columns:auto auto 1fr auto auto;gap:13px;align-items:center;padding:12px 14px}.toolbar>div{display:grid;color:var(--muted);font-size:.58rem;font-weight:850;text-transform:uppercase}.toolbar strong{color:var(--lime);font:900 1.3rem/1 ui-monospace,monospace}.toolbar p{margin:0;color:var(--muted);font-size:.75rem;text-align:center}.toolbar button,.end-actions button,dialog button{min-height:42px;padding:0 14px;background:transparent;border:1px solid #516a5f;border-radius:8px;font-weight:850;cursor:pointer}.toolbar button:hover,.toolbar button:focus-visible,.end-actions button:hover,.end-actions button:focus-visible,dialog button:hover,dialog button:focus-visible{color:var(--night);background:var(--lime);border-color:var(--lime)}button:disabled{opacity:.38;cursor:not-allowed}.open-ends{display:grid;grid-template-columns:1fr auto 1fr;gap:15px;align-items:center;padding:10px 14px;background:#0b1512;border-block:1px solid #253a31}.open-ends>span{color:var(--muted);font-size:.7rem;font-weight:850;text-transform:uppercase}.open-ends>span:last-child{text-align:right}.open-ends b{display:inline-grid;width:31px;aspect-ratio:1;place-items:center;margin-left:6px;color:#1b1304;background:var(--amber);border-radius:50%;font:900 1rem/1 var(--display)}.end-actions{display:flex;gap:7px}.chain{display:flex;gap:7px;min-height:132px;padding:27px 18px;align-items:center;overflow-x:auto;overscroll-behavior-inline:contain;background:radial-gradient(circle at 50% 0,rgba(255,255,255,.06),transparent 40%),#16503a}.hand-wrap{padding:18px 14px 22px}.hand-heading{display:flex;align-items:baseline;justify-content:space-between}.hand-heading h2{margin:0;font:900 1.25rem/1 var(--display)}.hand-heading p{margin:0;color:var(--muted);font-size:.72rem}.hand{display:flex;gap:8px;margin-top:13px;overflow-x:auto;padding:4px 3px 12px}.domino{display:flex;flex:0 0 auto;width:86px;height:46px;padding:3px;color:#171713;background:#eee9dc;border:1px solid #b9b2a5;border-radius:8px;box-shadow:0 5px 10px rgba(0,0,0,.34)}button.domino{cursor:pointer}button.domino.selected{outline:4px solid var(--lime);outline-offset:2px;transform:translateY(-3px)}button.domino.legal:not(.selected){box-shadow:0 0 0 3px rgba(240,189,88,.75),0 5px 10px rgba(0,0,0,.34)}.half{position:relative;flex:1;border-right:1px solid #908a80}.half:last-child{border-right:0}.pip{position:absolute;width:6px;aspect-ratio:1;background:#24251f;border-radius:50%;transform:translate(-50%,-50%)}.p1{left:25%;top:24%}.p2{left:75%;top:24%}.p3{left:25%;top:50%}.p4{left:75%;top:50%}.p5{left:25%;top:76%}.p6{left:75%;top:76%}.p7{left:50%;top:50%}.rules{display:grid;grid-template-columns:1fr 1.15fr;gap:64px;padding:68px 0}.rules h2{margin:8px 0;font:clamp(2.2rem,5vw,3.7rem)/.92 var(--display);letter-spacing:-.05em}.rules p{color:var(--muted)}dialog{width:min(440px,calc(100% - 28px));margin:auto;padding:30px;color:var(--ink);background:#111c18;border:1px solid rgba(201,243,94,.58);border-radius:20px;text-align:center}dialog::backdrop{background:rgba(2,8,6,.84);backdrop-filter:blur(5px)}dialog h2{margin:8px 0;font:clamp(2.6rem,10vw,4.7rem)/.9 var(--display)}dialog>p:not(.eyebrow){color:var(--muted)}footer{display:flex;justify-content:space-between;padding:24px 0 36px;border-top:1px solid var(--line);color:var(--muted);font-size:.78rem}footer a{font-weight:850;text-decoration:none}footer p{margin:0}@media(max-width:680px){.intro{display:block;padding:34px 0 22px}.intro>p{margin-top:17px}.toolbar{grid-template-columns:auto auto 1fr}.toolbar p{grid-column:1/-1;grid-row:2}.toolbar button{grid-row:3}.toolbar #draw{grid-column:1/3}.toolbar #restart{grid-column:3}.open-ends{grid-template-columns:1fr 1fr}.end-actions{grid-column:1/-1;grid-row:2}.end-actions button{flex:1}.chain{min-height:116px;padding:24px 10px}.rules{display:block;padding:46px 0}.rules>div+div{margin-top:22px}footer{display:block}footer p{margin-top:6px}}@media(max-width:400px){.site-header p{font-size:.56rem}.toolbar{padding:10px 8px}.domino{width:78px;height:43px}.pip{width:5px}}