:root{--hk-primary:#6366f1;--hk-primary-dark:#4f46e5;--hk-secondary:#10b981;--hk-accent:#f59e0b;--hk-danger:#e11d48;--hk-bg-dark:#0f172a;--hk-bg-card:#fff;--hk-text:#1e293b;--hk-text-light:#64748b;--hk-border:#e2e8f0;--hk-radius:12px;--hk-radius-lg:20px;--hk-shadow:0 4px 16px #0000001f;--hk-shadow-lg:0 8px 32px #0000002e}.battle-scene{background:linear-gradient(#0f172a 0%,#1e293b 50%,#0f172a 100%);flex-direction:column;width:100%;height:100%;min-height:500px;display:flex;position:relative;overflow:hidden}.battle-scene:before{content:"";pointer-events:none;background:radial-gradient(at 20% 80%,#6366f114 0%,#0000 60%),radial-gradient(at 80% 20%,#10b9810f 0%,#0000 60%);position:absolute;inset:0}.hud{z-index:30;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#0f172ae6;border-bottom:1px solid #ffffff14;justify-content:space-between;align-items:center;gap:6px;padding:6px 10px;display:flex;position:relative}.hud-stat{color:#fff;white-space:nowrap;background:#ffffff0f;border:1px solid #ffffff1a;border-radius:100px;align-items:center;gap:4px;padding:4px 10px;font-size:.7rem;font-weight:700;display:flex}.hud-stat .emoji{font-size:.85rem}.hud-stat .value{font-size:.8rem}.hp-hearts{gap:1px;display:flex}.hp-hearts .heart{font-size:.85rem;transition:opacity .3s}.hp-hearts .heart.lost{opacity:.2}.level-name{color:#fff;text-align:center;white-space:nowrap;text-overflow:ellipsis;background:#ffffff14;border:1px solid #ffffff1a;border-radius:100px;max-width:90px;padding:3px 10px;font-size:.75rem;font-weight:800;overflow:hidden}.monster-hp-bar{background:#ffffff1a;border-radius:10px;width:60px;height:5px;overflow:hidden}.monster-hp-fill{background:linear-gradient(90deg,#e11d48,#fb7185);border-radius:10px;height:100%;transition:width .6s}.timer-strip{z-index:25;background:#ffffff0f;flex-shrink:0;width:100%;height:4px;position:relative;overflow:hidden}.timer-strip-fill{border-radius:0 2px 2px 0;height:100%;transition:width 1s linear}.arena{flex:1;justify-content:space-between;align-items:center;min-height:0;padding:4px 8px;display:flex;position:relative}.audio-fab{z-index:20;-webkit-backdrop-filter:blur(8px);cursor:pointer;color:#fff;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;background:#ffffff1a;border:2px solid #ffffff2e;border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;font-size:1.2rem;transition:all .2s;display:flex;position:absolute;top:8px;left:50%;transform:translate(-50%);box-shadow:0 4px 16px #0000004d}.audio-fab:hover{background:#fff3;border-color:#ffffff59;transform:translate(-50%)scale(1.1);box-shadow:0 4px 20px #0006,0 0 30px #6366f140}.audio-fab:active{transform:translate(-50%)scale(.9)}.question-image-chip{z-index:19;background:#fffffff2;border-radius:10px;justify-content:center;align-items:center;width:48px;height:48px;padding:4px;display:flex;position:absolute;top:56px;left:50%;transform:translate(-50%);box-shadow:0 4px 16px #0003}.question-image-chip img{object-fit:contain;width:100%;height:100%}.instruction-toast{z-index:15;-webkit-backdrop-filter:blur(8px);color:#fff9;white-space:nowrap;pointer-events:none;background:#ffffff14;border:1px solid #ffffff1a;border-radius:100px;padding:3px 12px;font-size:.6rem;font-weight:600;position:absolute;bottom:8px;left:50%;transform:translate(-50%)}.cards-area{z-index:20;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0f172ab3;border-top:1px solid #ffffff0f;flex-wrap:wrap;justify-content:center;gap:8px;padding:10px 12px 14px;display:flex;position:relative}.reading-word-chip{text-align:center;color:#fff;background:#6366f12e;border:2px solid #6366f180;border-radius:16px;width:100%;padding:14px 10px;font-size:2.6rem;font-weight:900;box-shadow:0 0 24px #6366f14d}.reading-eval-row{gap:10px;width:100%;display:flex}.reading-eval-row .eval-btn{color:#fff;cursor:pointer;border:none;border-radius:14px;flex:1;padding:14px 10px;font-size:1rem;font-weight:900;transition:all .2s;box-shadow:0 4px 14px #00000040}.reading-eval-row .eval-btn:active{transform:scale(.96)}.reading-eval-row .eval-correct{background:linear-gradient(135deg,#10b981,#059669);border-bottom:4px solid #047857}.reading-eval-row .eval-wrong{background:linear-gradient(135deg,#ef4444,#dc2626);border-bottom:4px solid #b91c1c}.game-overlay{z-index:50;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#000000b3;justify-content:center;align-items:center;padding:20px;display:flex;position:absolute;inset:0}.game-overlay-card{border-radius:var(--hk-radius-lg);text-align:center;width:100%;max-width:400px;box-shadow:var(--hk-shadow-lg);background:#fff;padding:28px 24px}.game-overlay-card h1{margin-bottom:8px;font-size:2rem;font-weight:900}.game-overlay-card p{color:var(--hk-text-light);margin-bottom:20px;font-size:1rem;line-height:1.6}.game-overlay-btn{border-radius:var(--hk-radius);cursor:pointer;border:none;width:100%;margin-bottom:8px;padding:14px;font-size:1.05rem;font-weight:800;transition:all .2s;display:block}.game-overlay-btn:last-child{margin-bottom:0}.game-overlay-btn:active{transform:scale(.98)}@media (min-width:640px){.hud{gap:10px;padding:8px 16px}.hud-stat{padding:6px 16px;font-size:.8rem}.hud-stat .emoji{font-size:1rem}.hud-stat .value{font-size:.9rem}.hp-hearts .heart{font-size:1rem}.hp-hearts{gap:2px}.level-name{max-width:none;padding:4px 16px;font-size:.9rem}.monster-hp-bar{width:90px;height:6px}.timer-strip{height:5px}.arena{padding:8px 24px}.audio-fab{width:48px;height:48px;font-size:1.4rem;top:12px}.question-image-chip{width:52px;height:52px;top:64px}.instruction-toast{padding:4px 14px;font-size:.65rem}.cards-area{gap:12px;padding:12px 20px 16px}.game-overlay-card{padding:36px 32px}.game-overlay-card h1{font-size:2.5rem}.game-overlay-card p{font-size:1.1rem}.game-overlay-btn{padding:16px;font-size:1.1rem}}@media (min-width:1024px){.hud{gap:14px;padding:10px 32px}.hud-stat{padding:8px 20px;font-size:.9rem}.level-name{padding:6px 20px;font-size:1rem}.monster-hp-bar{width:120px;height:8px}.timer-strip{height:6px}.arena{padding:16px 60px}.audio-fab{width:52px;height:52px;font-size:1.5rem;top:16px}.question-image-chip{width:56px;height:56px;top:72px}.cards-area{gap:16px;padding:16px 32px 20px}}