.view-toggle[data-astro-cid-uhugqsec]{display:flex;gap:8px;margin-top:24px}.view-toggle-btn[data-astro-cid-uhugqsec]{padding:10px 20px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--text);font:inherit;font-weight:700;cursor:pointer;transition:background .15s,color .15s,border-color .15s}.view-toggle-btn[data-astro-cid-uhugqsec].is-active{background:var(--primary);color:#fff;border-color:var(--primary)}.study-toolbar[data-astro-cid-uhugqsec]{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:18px}.toggle-chip[data-astro-cid-uhugqsec]{display:inline-flex;align-items:center;gap:10px;padding:10px 14px;border:1px solid #dbe4ee;border-radius:999px;background:#fff;font-weight:700;color:var(--text);cursor:pointer}.toggle-chip[data-astro-cid-uhugqsec] input[data-astro-cid-uhugqsec]{accent-color:var(--primary)}.card-header-right[data-astro-cid-uhugqsec]{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}.memorized-badge[data-astro-cid-uhugqsec]{display:none;padding:4px 10px;border-radius:999px;background:#d1fae5;color:#065f46;font-size:.82rem;font-weight:700}.memorized-badge[data-astro-cid-uhugqsec].is-visible{display:inline-block}.phrase-scene-page[data-astro-cid-uhugqsec].is-pinyin-hidden .pinyin-block[data-astro-cid-uhugqsec],.phrase-scene-page[data-astro-cid-uhugqsec].is-pinyin-hidden .pinyin-flash[data-astro-cid-uhugqsec]{display:none}.flash-header[data-astro-cid-uhugqsec]{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}.flash-progress[data-astro-cid-uhugqsec]{margin:0;font-weight:700;color:var(--muted)}.flash-memorized-count[data-astro-cid-uhugqsec]{margin:0;font-weight:700;color:#065f46}.flash-card-wrap[data-astro-cid-uhugqsec]{perspective:1200px;margin-bottom:24px}.flash-card[data-astro-cid-uhugqsec]{width:100%;max-width:560px;height:280px;margin:0 auto;cursor:pointer;position:relative;outline:none;border-radius:20px}.flash-card[data-astro-cid-uhugqsec]:focus-visible{box-shadow:0 0 0 3px var(--primary)}.flash-card-inner[data-astro-cid-uhugqsec]{position:relative;width:100%;height:100%;transform-style:preserve-3d;transition:transform .45s ease}.flash-card[data-astro-cid-uhugqsec].is-flipped .flash-card-inner[data-astro-cid-uhugqsec]{transform:rotateY(180deg)}.flash-card-front[data-astro-cid-uhugqsec],.flash-card-back[data-astro-cid-uhugqsec]{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:32px;border:1px solid var(--line);border-radius:20px;backface-visibility:hidden;-webkit-backface-visibility:hidden}.flash-card-front[data-astro-cid-uhugqsec]{background:#fff;box-shadow:0 10px 32px #0f172a12}.flash-card-back[data-astro-cid-uhugqsec]{background:var(--primary-light);box-shadow:0 10px 32px #0f766e1a;transform:rotateY(180deg);gap:12px}.flash-hint[data-astro-cid-uhugqsec]{margin:0 0 16px;font-size:.85rem;color:var(--muted)}.flash-word[data-astro-cid-uhugqsec]{margin:0 0 12px;font-size:clamp(1.6rem,4vw,2.2rem);font-weight:700;color:#111827;line-height:1.3;text-align:center}.flash-pinyin[data-astro-cid-uhugqsec],.flash-word-small[data-astro-cid-uhugqsec]{margin:0;font-size:1rem;font-weight:700;color:var(--primary);text-align:center}.flash-meaning[data-astro-cid-uhugqsec]{margin:0;font-size:1.5rem;font-weight:700;color:#111827;text-align:center}.flash-actions[data-astro-cid-uhugqsec]{display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap}.flash-btn[data-astro-cid-uhugqsec]{padding:12px 20px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--text);font:inherit;font-weight:700;cursor:pointer;transition:background .15s,color .15s,border-color .15s}.flash-btn[data-astro-cid-uhugqsec]:hover{background:#f1f5f9}.flash-btn-memorized[data-astro-cid-uhugqsec]{color:var(--muted)}.flash-btn-memorized[data-astro-cid-uhugqsec].is-memorized{background:#d1fae5;color:#065f46;border-color:#6ee7b7}.flash-btn-audio[data-astro-cid-uhugqsec]{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}.flash-btn-audio[data-astro-cid-uhugqsec]:hover{background:var(--primary);color:#fff}.flash-reset-wrap[data-astro-cid-uhugqsec]{margin-top:20px;text-align:center}.flash-reset-btn[data-astro-cid-uhugqsec]{background:none;border:none;color:var(--muted);font:inherit;font-size:.88rem;cursor:pointer;text-decoration:underline;text-underline-offset:3px}.flash-reset-btn[data-astro-cid-uhugqsec]:hover{color:var(--text)}.category-intro-box[data-astro-cid-uhugqsec]{margin-top:24px;padding:22px 24px;border:1px solid #dbe4ee;border-radius:20px;background:linear-gradient(180deg,#fff,#f8fcfb);box-shadow:0 8px 24px #0f172a0a}.category-intro-title[data-astro-cid-uhugqsec]{margin:0 0 12px;font-size:1.15rem;line-height:1.6}.category-intro-text[data-astro-cid-uhugqsec]{margin:0;color:var(--muted);line-height:1.9}.category-intro-text[data-astro-cid-uhugqsec]+.category-intro-text[data-astro-cid-uhugqsec]{margin-top:10px}@media(max-width:767px){.view-toggle[data-astro-cid-uhugqsec]{flex-wrap:wrap}.view-toggle-btn[data-astro-cid-uhugqsec]{min-height:42px;padding:10px 16px}.study-toolbar[data-astro-cid-uhugqsec]{margin-top:14px}.toggle-chip[data-astro-cid-uhugqsec]{width:100%;justify-content:center}.flash-card[data-astro-cid-uhugqsec]{height:250px}.flash-word[data-astro-cid-uhugqsec]{font-size:1.5rem}.flash-meaning[data-astro-cid-uhugqsec]{font-size:1.3rem}.flash-btn[data-astro-cid-uhugqsec]{padding:10px 16px;font-size:.95rem}.category-intro-box[data-astro-cid-uhugqsec]{padding:18px 16px;border-radius:16px}.category-intro-title[data-astro-cid-uhugqsec]{font-size:1.05rem}}