: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{position:relative;width:100%;max-width:480px;height:100dvh;margin:0 auto;display:flex;flex-direction:column;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}#hud{display:flex;align-items:center;justify-content:space-between;padding:10px 16px 4px;gap:8px}#hud .lab{display:block;font-size:10px;letter-spacing:.14em;color:var(--text-dim);margin-top:-2px}.hud-l,.hud-r{display:flex;flex-direction:column;min-width:70px}.hud-r{align-items:flex-end;text-align:right}#score,#time{font-size:24px;font-weight:700;line-height:1}#time{color:var(--accent)}.hud-c{flex:1;text-align:center}#chain{display:inline-block;font-size:15px;font-weight:700;color:#ffd560;opacity:0;transition:opacity .15s;text-shadow:0 0 12px rgba(255,213,96,.5)}#game{display:block;width:100%;flex:1;min-height:0}#ui{position:absolute;inset:0;pointer-events:none}#ui>*{pointer-events:auto}.modal-bg{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#0609188c;backdrop-filter:blur(3px);padding:24px}.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;width:100%;max-width:360px;text-align:center;box-shadow:0 18px 50px #00000080;animation:pop .25s cubic-bezier(.2,.9,.3,1.2)}@keyframes pop{0%{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}.logo{font-size:30px;font-weight:800;letter-spacing:.04em}.logo .jp{display:block;font-size:14px;letter-spacing:.5em;color:var(--accent);margin-top:4px}.tag{margin:16px 0 10px;font-size:14px;color:var(--text);line-height:1.6}.tag b{color:var(--accent)}.demo-hint{font-size:12px;color:var(--text-dim);line-height:1.7;margin-bottom:20px}.sub{margin-top:12px;font-size:11px;color:var(--text-dim);letter-spacing:.04em}.btn{display:block;width:100%;border:none;border-radius:var(--radius-sm);padding:14px;font-size:15px;font-weight:700;font-family:inherit;cursor:pointer;margin-top:10px;transition:transform .08s,filter .15s}.btn:active{transform:scale(.96)}.btn.primary{background:var(--accent);color:#062018}.btn.primary.big{padding:16px;font-size:17px}.btn.ghost{background:transparent;color:var(--text-dim);border:1px solid var(--border)}.over-score{font-size:46px;font-weight:800;line-height:1;color:var(--accent);text-shadow:0 0 24px rgba(0,201,167,.35)}.over-lab{font-size:13px;color:var(--text-dim);margin:6px 0 14px;letter-spacing:.08em}.world,.rank,.streak,.gacha{font-size:13px;margin:5px 0;color:var(--text)}.rank{color:var(--accent);font-weight:700}.streak{color:#ffd560;font-weight:700}.gacha.new{color:#9a6bff;font-weight:700}.gacha.new b{color:#c5a6ff}.gacha.dup{color:var(--text-dim)}.rev-title{font-size:19px;font-weight:700}.rev-title b{color:var(--accent)}.rev-sub{font-size:13px;color:var(--text-dim);margin:8px 0 18px}.toast{position:fixed;left:50%;bottom:13%;transform:translate(-50%);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:11px 18px;font-size:13px;z-index:50;box-shadow:0 8px 28px #00000080;animation:pop .2s ease}@media (prefers-reduced-motion: reduce){.modal,.toast{animation:none}}