:root{
  --bg:#f7f8fb;
  --card:#ffffff;
  --muted:#707588;
  --accent:#0b76ff;
  --maxw:1100px;
  font-size:16px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial;
  background:var(--bg);
  color:#0d1424;
  -webkit-font-smoothing:antialiased;
}
.container{max-width:var(--maxw);margin:18px auto;padding:0 16px}
.site-header{background:transparent;padding:18px 0}
.site-header h1{margin:0;font-size:20px;letter-spacing:0.2px}
.sub{color:var(--muted);margin-top:4px;font-size:14px}

.game-wrap{display:flex;flex-direction:column;gap:12px;align-items:center;justify-content:flex-start}
#ad-tmp{width:100%;height:90px;background:#e6e9f3;border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--muted)}

.ad{width:100%;max-width:100%;display:flex;align-items:center;justify-content:center;margin:12px 0;padding:12px;background:#eef1fb;border-radius:6px;color:var(--muted);font-size:13px}

/* game board shell */
#game-root{width:100%;max-width:980px;background:transparent;display:block;min-height:300px;padding:12px;border-radius:8px}
.board{display:flex;flex-direction:column;gap:12px}
.board-top{display:flex;gap:12px;align-items:center;justify-content:space-between}
.board-piles{display:flex;gap:8px;align-items:flex-start}
.pile{width:88px;min-height:120px;background:transparent;border-radius:6px;padding:6px}
.slot{width:88px;height:120px;border-radius:6px;background:linear-gradient(180deg,#fff,#fff);box-shadow:0 1px 0 rgba(0,0,0,0.05);display:flex;align-items:flex-start;justify-content:center;overflow:visible}

/* card */
.card{
  width:72px;height:96px;border-radius:6px;box-shadow:0 6px 14px rgba(15,20,40,0.06);
  background:var(--card);display:flex;flex-direction:column;justify-content:space-between;padding:6px;font-size:14px;
  user-select:none;cursor:pointer;position:relative;margin-top:-72px;
}
.card.face-down{background:linear-gradient(135deg,#0b76ff,#4fb7ff);color:#fff}
.card .rank{font-weight:600}
.card.red .rank,.card.red .suit{color:#e02828}
.card.black .rank,.card.black .suit{color:#0b1a2b}

/* simple controls */
.controls{display:flex;gap:8px;align-items:center}
.btn{display:inline-block;padding:8px 12px;border-radius:8px;background:var(--accent);color:#fff;text-decoration:none;font-weight:600}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid rgba(11,118,255,0.12)}
.backlinks{margin-top:12px}

/* accessibility */
@media (max-width:640px){
  .pile{width:68px}
  .card{width:56px;height:76px}
  :root{font-size:15px}
}
.seo-text{margin:16px 0;color:var(--muted);line-height:1.5}
.site-footer{padding:18px 0;text-align:center;color:var(--muted);font-size:13px}