: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:#070a12;color:var(--text);font-family:Hiragino Sans,Noto Sans JP,system-ui,sans-serif;font-variant-numeric:tabular-nums;overflow:hidden;touch-action:none;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}#app{position:fixed;inset:0;display:flex;align-items:center;justify-content:center}canvas{display:block}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#050810b8;opacity:0;pointer-events:none;transition:opacity .28s ease;z-index:10}.overlay.show{opacity:1;pointer-events:auto}.panel{width:78%;max-width:320px;background:linear-gradient(180deg,#11182a,#0c1120);border:1px solid rgba(120,140,190,.18);border-radius:20px;padding:26px 22px 22px;text-align:center;color:#e4e7f1;transform:translateY(12px) scale(.97);transition:transform .28s cubic-bezier(.2,1.4,.4,1);box-shadow:0 18px 60px #0000008c}.overlay.show .panel{transform:translateY(0) scale(1)}.panel h2{margin:0 0 4px;font-size:21px;letter-spacing:.12em;font-weight:700}.panel .sub{font-size:12px;color:#8b93ab;margin-bottom:14px}.panel .big{font-size:44px;font-weight:800;font-variant-numeric:tabular-nums;color:#ffd87a;text-shadow:0 0 24px rgba(255,170,60,.35);margin:2px 0}.panel .row{display:flex;justify-content:space-around;margin:12px 0 18px;font-size:13px;color:#aeb6cc}.panel .row b{display:block;font-size:19px;color:#e4e7f1}.btn{display:block;width:100%;padding:14px 0;border:none;border-radius:14px;background:linear-gradient(180deg,#1f8f7e,#157263);color:#eafff9;font-size:17px;font-weight:700;letter-spacing:.18em;cursor:pointer;transition:transform .08s ease}.btn:active{transform:scale(.96)}