:root{
  --bg:#0e1120; --panel:#181c30; --panel2:#1f2440; --line:#2a3052;
  --text:#e8eaf6; --soft:#cfd3ec; --muted:#9aa0c3;
  --accent:#7c5cff; --accent2:#00d4ff; --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  background:radial-gradient(1200px 600px at 20% -10%,#1b2040 0%,var(--bg) 55%);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  line-height:1.6;min-height:100vh;
}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}
.site-header{max-width:1000px;margin:0 auto;padding:20px 16px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px}
.brand{font-size:1.35rem;font-weight:800;color:var(--text);letter-spacing:.5px}
.brand:hover{text-decoration:none;color:var(--accent2)}
.site-nav a{color:var(--muted);margin-left:16px;font-size:.95rem}
.site-nav a:hover{color:var(--text)}
main{max-width:1000px;margin:0 auto;padding:8px 16px 40px}
.hero{padding:28px 0 10px}
.hero h1{font-size:2rem;margin-bottom:8px}
.hero p{color:var(--muted);max-width:680px}
.game-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;margin:26px 0}
.card{background:linear-gradient(160deg,var(--panel) 0%,var(--panel2) 100%);border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:block;color:var(--text);transition:transform .15s,border-color .15s}
.card:hover{transform:translateY(-3px);border-color:var(--accent);text-decoration:none}
.card .icon{font-size:2rem}
.card h2{font-size:1.15rem;margin:10px 0 6px}
.card p{color:var(--muted);font-size:.92rem}
.play-area{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin:22px 0;display:flex;flex-direction:column;align-items:center;gap:14px}
.hud{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;font-variant-numeric:tabular-nums}
.hud .stat{background:var(--panel2);border-radius:10px;padding:6px 14px;font-size:.85rem;color:var(--muted)}
.hud .stat b{color:var(--text);font-size:1.05rem;margin-left:4px}
button,.btn{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:10px 18px;font-size:.95rem;font-weight:600;cursor:pointer;font-family:inherit}
button:hover{filter:brightness(1.12)}
button.ghost{background:transparent;border:1px solid var(--line);color:var(--soft)}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.msg{min-height:1.4em;font-weight:600;color:var(--accent2);text-align:center}
article{max-width:720px}
article h1{font-size:1.8rem;margin-bottom:6px}
article h2{margin:26px 0 8px;font-size:1.3rem}
article h3{margin:18px 0 6px;font-size:1.05rem;color:var(--accent2)}
article p{margin:10px 0;color:var(--soft)}
article ul,article ol{margin:10px 0 10px 22px;color:var(--soft)}
article li{margin:4px 0}
.lede{color:var(--muted);font-size:1.05rem}
.site-footer{max-width:1000px;margin:0 auto;padding:24px 16px 40px;border-top:1px solid #232848;color:var(--muted);font-size:.88rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
canvas{touch-action:none;display:block}
.board-2048{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;width:min(88vw,360px);background:#11152a;padding:8px;border-radius:12px;touch-action:none}
.cell{aspect-ratio:1;display:flex;align-items:center;justify-content:center;border-radius:8px;background:#1d2242;font-weight:800;font-size:clamp(1.1rem,6vw,1.7rem);color:#0e1120}
.cell:empty{background:#1d2242}
.t2{background:#8f9dc9;color:#0e1120}.t4{background:#aebbe6;color:#0e1120}
.t8{background:#f2b179;color:#0e1120}.t16{background:#f59563;color:#0e1120}
.t32{background:#f67c5f;color:#fff}.t64{background:#f65e3b;color:#fff}
.t128{background:#edcf72;color:#0e1120;font-size:clamp(.95rem,5vw,1.4rem)!important}
.t256{background:#edcc61;color:#0e1120;font-size:clamp(.95rem,5vw,1.4rem)!important}
.t512{background:#edc850;color:#0e1120;font-size:clamp(.95rem,5vw,1.4rem)!important}
.t1024{background:#edc53f;color:#0e1120;font-size:clamp(.8rem,4.4vw,1.2rem)!important}
.t2048{background:#edc22e;color:#0e1120;font-size:clamp(.8rem,4.4vw,1.2rem)!important}
.tbig{background:#7c5cff;color:#fff;font-size:clamp(.8rem,4.4vw,1.2rem)!important}
.mem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;width:min(88vw,380px)}
.mem-card{aspect-ratio:3/3.4;border-radius:10px;background:linear-gradient(160deg,#252b4d,#1b2040);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:1.9rem;cursor:pointer;user-select:none;transition:transform .12s,background .12s;color:transparent}
.mem-card.open,.mem-card.done{background:#e8eaf6;color:#0e1120;transform:rotateY(0)}
.mem-card.done{opacity:.55;cursor:default}
.mine-grid{display:grid;grid-template-columns:repeat(9,1fr);gap:3px;width:min(88vw,360px)}
.mine-cell{aspect-ratio:1;border-radius:5px;background:#252b4d;border:1px solid #313a66;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.95rem;cursor:pointer;user-select:none;color:var(--text)}
.mine-cell.open{background:#11152a;border-color:#1d2242;cursor:default}
.mine-cell.flag{background:#3d2b5d}
.mine-cell.boom{background:#f65e3b}
.n1{color:#5b8def}.n2{color:#3fbf6f}.n3{color:#ef5b5b}.n4{color:#9a6bff}.n5{color:#e8a13c}.n6{color:#37c4d4}.n7{color:#e8eaf6}.n8{color:#9aa0c3}
.pad{display:grid;grid-template-columns:repeat(3,64px);grid-template-rows:repeat(3,52px);gap:6px;justify-content:center}
.pad button{background:var(--panel2);border:1px solid var(--line);color:var(--text);font-size:1.1rem;padding:0}
@media (max-width:560px){
  .hero h1{font-size:1.6rem}
  .site-nav a{margin-left:10px}
}