:root{color-scheme:dark}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";background:#0b0b0f;color:#e5e7eb}.root{min-height:100vh;display:flex;align-items:center;justify-content:center}.wrap{width:100%;max-width:560px;padding:24px}.head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.head h1{margin:0;font-size:32px;font-weight:900;letter-spacing:-.02em}.stats{display:flex;align-items:center;gap:8px}.box{background:#18181b;border:1px solid #27272a;border-radius:12px;padding:8px 10px;text-align:right}.box .label{font-size:10px;color:#9ca3af;text-transform:uppercase}.box .val{font-size:18px;font-weight:800;color:#f3f4f6}.btn{background:#10b981;color:#041b16;border:none;font-weight:700;padding:8px 12px;border-radius:12px;cursor:pointer}.btn:hover{filter:brightness(1.05)}.btn:active{transform:translateY(1px)}.board{position:relative;margin:0 auto;border-radius:16px;background:#0f172a;border:1px solid #1f2937;padding:10px}.bggrid{position:absolute;inset:10px;display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);gap:10px}.bgcell{background:#20212a;border-radius:12px}.tiles{position:absolute;inset:10px}.tile{position:absolute;border-radius:12px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px #00000059;transition:transform .12s ease}.tile span{font-size:26px;font-weight:900;color:#111827;text-shadow:0 1px 0 rgba(255,255,255,.25)}.overlay{position:absolute;inset:0;background:#020617b3;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);border-radius:16px;display:flex;align-items:center;justify-content:center}.overlay-card{background:#0b1326;border:1px solid #1f2a44;border-radius:16px;padding:20px;text-align:center;width:min(90%,360px)}.overlay-card .title{font-size:28px;font-weight:900;margin-bottom:6px}.overlay-card .subtitle{color:#cbd5e1;margin-bottom:12px}.actions{display:flex;gap:8px;justify-content:center}.hint{color:#9ca3af;font-size:12px;margin-top:8px}