.icn-wrap{display:flex;flex-direction:column;align-items:center;gap:14px;padding:12px 0;width:100%;max-width:min(94vw,720px);margin:0 auto}.icn-setup{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;width:100%}.icn-rules{max-width:520px;font-size:.95rem}.icn-controls{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.icn-hud{gap:8px;flex-wrap:wrap;justify-content:center}.icn-chip{background:#1e2942;color:#94a3b8;border:1px solid rgba(148,163,184,.25);border-radius:12px;padding:6px 14px;font-variant-numeric:tabular-nums;font-size:.9rem}.icn-chip.icn-urgent{color:#ef4444;border-color:#ef4444;font-weight:700}.icn-stage{display:flex;flex-direction:column;align-items:center;gap:4px;background:#1e2942;border:1px solid rgba(148,163,184,.25);border-radius:16px;padding:18px 24px;width:100%;box-sizing:border-box}.icn-label{font-size:.85rem;text-align:center}.icn-current{font-size:clamp(2.2rem,10vw,3.4rem);font-weight:800;color:#f2f6fc;letter-spacing:.06em;line-height:1.2;text-align:center}.icn-pinyin{font-size:1rem;letter-spacing:.04em}.icn-rack{display:grid;grid-template-columns:repeat(2,1fr);grid-template-rows:repeat(3,1fr);gap:10px;width:100%}@media (min-width: 520px){.icn-rack{grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(2,1fr)}}.icn-tile{min-width:0;min-height:64px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;border:2px solid rgba(148,163,184,.28);border-radius:12px;background:#16213a;color:#f2f6fc;cursor:pointer;padding:10px 6px;transition:transform 90ms ease,background .12s ease,border-color .12s ease}.icn-tile:hover{border-color:#3b82f6;transform:translateY(-1px)}.icn-tile-text{font-size:clamp(1.4rem,6vw,2rem);font-weight:800;letter-spacing:.04em}.icn-tile-pinyin{font-size:.72rem;color:#94a3b8}.icn-tile.icn-flash{animation:icn-shake .45s;border-color:#ef4444;background:#ef444426}@keyframes icn-shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-6px)}40%,80%{transform:translate(6px)}}.icn-banner{display:flex;flex-direction:column;align-items:center;gap:6px;border-radius:12px;padding:14px 20px;width:100%;box-sizing:border-box;text-align:center}.icn-banner.icn-win{background:#22c55e1f;border:1px solid rgba(34,197,94,.5);color:#22c55e}.icn-banner.icn-lose{background:#ef44441f;border:1px solid rgba(239,68,68,.5);color:#f87171}.icn-history{width:100%;color:#94a3b8;font-size:.9rem}.icn-history summary{cursor:pointer;padding:6px 0}.icn-history ol{margin:6px 0 0;padding-left:22px;max-height:220px;overflow-y:auto}.icn-history li{font-size:1.1rem;padding:2px 0;color:#f2f6fc}.icn-h-ai{color:#3b82f6}.icn-h-player{color:#22c55e}.igu-wrap{display:flex;flex-direction:column;align-items:center;gap:14px;padding:12px 0;width:100%;max-width:min(94vw,720px);margin:0 auto}.igu-hud{display:flex;flex-direction:column;align-items:center;gap:4px;text-align:center}.igu-countdown{font-variant-numeric:tabular-nums;font-size:.85rem}.igu-clues{display:flex;flex-direction:column;gap:8px;width:100%;background:#1e2942;border:1px solid rgba(148,163,184,.25);border-radius:14px;padding:14px 18px;box-sizing:border-box}.igu-clue{display:flex;flex-direction:column;gap:2px}.igu-clue-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.06em}.igu-pinyin{font-size:1.15rem;color:#f2f6fc;letter-spacing:.04em}.igu-hint{font-size:1rem;color:#f2f6fc}.igu-answer{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:1fr;gap:8px;width:min(94vw,420px);aspect-ratio:4 / 1;max-width:100%}.igu-slot{min-width:0;min-height:0;display:flex;align-items:center;justify-content:center;border:2px solid rgba(148,163,184,.28);border-radius:12px;background:#16213a;color:#f2f6fc;font-weight:800;font-size:clamp(1.6rem,9vw,2.6rem)}.igu-slot.igu-filled{border-color:#22c55e;background:#22c55e24}.igu-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(3,1fr);gap:8px;width:min(94vw,480px);aspect-ratio:4 / 3;max-width:100%;-webkit-user-select:none;user-select:none}.igu-tile{min-width:0;min-height:0;display:flex;align-items:center;justify-content:center;border:2px solid rgba(148,163,184,.28);border-radius:12px;background:#1e2942;color:#f2f6fc;font-weight:800;font-size:clamp(1.6rem,8vw,2.4rem);cursor:pointer;transition:transform 90ms ease,background .12s ease,border-color .12s ease}.igu-tile:hover:not(:disabled){border-color:#3b82f6;transform:translateY(-1px)}.igu-tile:disabled{cursor:default}.igu-tile.igu-used{opacity:.25}.igu-tile.igu-wrong{animation:igu-shake .4s;border-color:#ef4444;background:#ef44442e}@keyframes igu-shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-6px)}40%,80%{transform:translate(6px)}}.igu-status{min-height:44px;display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center}.igu-banner{display:flex;flex-direction:column;gap:4px;align-items:center;border-radius:12px;padding:10px 18px}.igu-winbanner{background:#22c55e1f;border:1px solid rgba(34,197,94,.5);color:#22c55e}.igu-losebanner{background:#ef44441f;border:1px solid rgba(239,68,68,.5);color:#f87171}.igu-score{color:#f59e0b;font-weight:600}.igu-reveal{color:#f2f6fc;font-weight:700;font-size:1.3rem;letter-spacing:.05em}.igu-controls{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.igu-btn{min-height:44px;padding:10px 20px;border-radius:12px;border:1px solid rgba(148,163,184,.3);background:#1e2942;color:#f2f6fc;font-weight:600;cursor:pointer}.igu-btn:hover{filter:brightness(1.1)}.igu-foot{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.igu-chip{background:#1e2942;color:#94a3b8;border:1px solid rgba(148,163,184,.25);border-radius:12px;padding:6px 14px;font-size:.9rem}.igu-best b{color:#f59e0b}