:root{--bg: #0a0e27;--surface: #131736;--surface-2: #1b2147;--accent: #00c9a7;--accent-dim: #0a8a76;--text: #e4e7f1;--text-dim: #8a91b8;--danger: #ff5757;--warning: #ffb830;--border: #2a3166;--radius: 14px;--radius-sm: 8px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-6: 24px;--space-8: 32px;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .25);--shadow-md: 0 8px 24px rgba(0, 0, 0, .35);--font-ui: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-num: "SF Mono", ui-monospace, "Roboto Mono", monospace;--ease: cubic-bezier(.22, 1, .36, 1);--press-scale: .96;--t-fast: .12s;--t-base: .2s}.fk-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em}.fk-btn{appearance:none;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:var(--radius-sm);padding:var(--space-3) var(--space-4);font-family:var(--font-ui);font-weight:600;cursor:pointer;transition:transform var(--t-fast) var(--ease),background var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease)}.fk-btn:active{transform:scale(var(--press-scale))}.fk-btn--primary{background:var(--accent);border-color:var(--accent);color:#03150f}.fk-btn--primary:active{background:var(--accent-dim)}@media (prefers-reduced-motion: reduce){.fk-btn{transition:none}}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100dvh;background:var(--bg);color:var(--text);font-family:system-ui,sans-serif;font-variant-numeric:tabular-nums;overflow:hidden;touch-action:none;-webkit-tap-highlight-color:transparent}#app{width:100%;max-width:480px;height:100dvh;margin:0 auto;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}#game{display:block;width:100%;height:100%}#overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:#050814b8;backdrop-filter:blur(4px);z-index:10}#overlay.hidden{display:none}#overlay .card{background:var(--surface, #11173a);border:1px solid rgba(120,140,200,.22);border-radius:18px;padding:28px 34px;text-align:center;min-width:240px;box-shadow:0 18px 50px #00000080;animation:pop-in .22s cubic-bezier(.2,1.6,.4,1)}@keyframes pop-in{0%{transform:scale(.85);opacity:0}to{transform:scale(1);opacity:1}}#overlay .ttl{color:#7d88a8;font-size:13px;font-weight:600;letter-spacing:.12em}#overlay .big{color:#e8ecf8;font-size:44px;font-weight:800;margin:8px 0 2px}#overlay .sub{color:#ffce54;font-size:14px;font-weight:600;margin-bottom:10px}#overlay .row{display:flex;gap:16px;justify-content:center;color:#7d88a8;font-size:12px;margin-bottom:18px}#overlay button{background:#00c9a7;color:#06281f;border:none;border-radius:12px;padding:13px 38px;font-size:16px;font-weight:700;cursor:pointer;transition:transform .08s}#overlay button:active{transform:scale(.94)}