: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;-webkit-tap-highlight-color:transparent}html,body{height:100%;background:var(--bg);color:var(--text);font-family:var(--font-ui);overflow:hidden;touch-action:none;user-select:none;-webkit-user-select:none}#app{display:flex;flex-direction:column;height:100dvh;max-width:560px;margin:0 auto}#hud{display:flex;align-items:center;justify-content:space-between;padding:max(env(safe-area-inset-top),10px) var(--space-4) 0;height:64px;flex:0 0 auto}.hud-left,.hud-right{display:flex;flex-direction:column;min-width:84px}.hud-right{align-items:flex-end}.hud-mid{flex:1;text-align:center}.lbl{font-size:10px;letter-spacing:.14em;color:var(--text-dim);font-weight:700}#score{font-size:26px;font-weight:800;color:var(--accent);line-height:1}#time{font-size:26px;font-weight:800;color:var(--text);line-height:1}.combo-chip{font-size:13px;font-weight:800;letter-spacing:.08em;color:var(--warning);opacity:0;transform:scale(.7);transition:opacity .15s,transform .15s var(--ease);display:inline-block}.combo-chip.on{opacity:1;transform:scale(1)}#stage{flex:1 1 auto;position:relative;min-height:0}#cv{width:100%;height:100%;display:block}#ui{position:fixed;inset:0;pointer-events:none;z-index:20;display:flex;align-items:center;justify-content:center}#ui>*{pointer-events:auto}.title-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:var(--space-8) var(--space-6);width:min(86vw,360px);text-align:center;box-shadow:var(--shadow-md);display:flex;flex-direction:column;gap:var(--space-3);align-items:center}.title-jp{font-size:72px;font-weight:900;color:var(--accent);line-height:.9;text-shadow:0 0 24px rgba(0,201,167,.35)}.title-en{font-size:16px;letter-spacing:.5em;color:var(--text-dim);font-weight:700;margin-left:.5em}.title-tag{font-size:14px;color:var(--text);opacity:.85;margin:var(--space-2) 0 var(--space-4)}.streak-chip{font-size:12px;color:var(--warning);font-weight:700}.btn{width:100%;padding:14px;border-radius:var(--radius-sm);border:1px solid var(--border);font-size:16px;font-weight:800;cursor:pointer;transition:transform .1s var(--ease),background .15s;font-family:var(--font-ui)}.btn:active{transform:scale(var(--press-scale))}.btn-accent{background:var(--accent);color:#06231d;border-color:transparent}.btn-ghost{background:var(--surface-2);color:var(--text)}.modal-backdrop{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;background:#05071499;opacity:0;transition:opacity .2s;backdrop-filter:blur(2px)}.modal-backdrop.show{opacity:1}.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:var(--space-6);width:min(86vw,360px);text-align:center;box-shadow:var(--shadow-md);display:flex;flex-direction:column;gap:var(--space-3);transform:translateY(12px) scale(.97);transition:transform .25s var(--ease)}.modal-backdrop.show .modal{transform:translateY(0) scale(1)}.modal-title{font-size:22px;font-weight:900;color:var(--accent)}.modal-sub{font-size:14px;color:var(--text-dim)}.result-score{font-size:44px;font-weight:900;color:var(--text);line-height:1}.hot{color:var(--warning)}.reward{font-size:14px;font-weight:700;color:var(--warning);padding:var(--space-2);background:var(--surface-2);border-radius:var(--radius-sm)}.world-goal{width:100%}.world-goal:empty{display:none}.wg-lbl{font-size:11px;color:var(--text-dim);font-weight:700;letter-spacing:.08em;margin-bottom:4px}.wg-bar{height:10px;background:var(--surface-2);border-radius:5px;overflow:hidden;border:1px solid var(--border)}.wg-fill{height:100%;background:linear-gradient(90deg,var(--accent-dim),var(--accent));transition:width .6s var(--ease)}.wg-num{font-size:11px;color:var(--text-dim);margin-top:4px;font-variant-numeric:tabular-nums}.toast{position:fixed;left:50%;bottom:80px;transform:translate(-50%) translateY(8px);background:var(--surface-2);color:var(--text);padding:10px 18px;border-radius:var(--radius-sm);border:1px solid var(--border);font-size:13px;font-weight:700;opacity:0;transition:opacity .25s,transform .25s;z-index:60}.toast.show{opacity:1;transform:translate(-50%) translateY(0)}@media (prefers-reduced-motion: reduce){*{transition-duration:.01ms!important}}