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img{width:140px;height:140px;object-fit:contain}.muted{color:var(--muted)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:28px 0}.stat{padding:22px;background:white;border:1px solid var(--line);border-radius:16px}.stat strong{display:block;font-size:32px;margin-bottom:7px}.stat span{font-size:13px;color:var(--muted)}.filters{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0}select{padding:12px;border:1px solid var(--line);border-radius:9px;background:white;color:var(--green)}.word-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}.word{border:1px solid var(--line);border-left:5px solid #aab3ae;background:#fff;border-radius:10px;padding:17px}.word.mastered{border-left-color:#5d963d}.word.learning{border-left-color:#5489c6}.word.review{border-left-color:#dd9638}.word strong{display:block;font-size:18px;margin-bottom:5px}.word small{display:block;color:var(--muted);margin-top:10px;line-height:1.6}.word 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var(--line);font-size:12px;color:var(--muted)}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:#203d31;color:#fff;padding:16px 24px;border-radius:12px;max-width:90vw;z-index:10}label{line-height:1.6}input[type=file]{display:block;margin:20px 0;max-width:100%}:focus-visible{outline:3px solid #98b978;outline-offset:3px}[hidden]{display:none!important}@media(max-width:650px){header{padding:18px;align-items:flex-start;flex-direction:column}nav{gap:20px;flex-wrap:wrap}main{margin:30px auto;padding:0 18px}.hero{display:block}.hero-note{display:none}.exercise{padding:24px 16px}.stats{gap:8px}.stat{padding:15px 10px}.stat strong{font-size:26px}.card,.panel{padding:22px}.option{padding:12px}.chart{height:200px}}

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.example{font-size:18px;line-height:1.7;color:#385847;max-width:590px;margin:16px auto}.audio-player{display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap;padding:22px 12px;background:#f1f6ec;border-radius:14px;margin:22px 0}.audio-player audio{display:none}.audio-player p{width:100%;font-size:13px;margin:5px 0}.meaning{padding:10px 0;border-top:1px solid var(--line);margin-top:10px}.meaning summary{cursor:pointer;font-size:13px;line-height:1.6}.meaning .example{font-size:14px;margin:10px 0}.meaning p{font-size:13px}

.picture-gallery{display:flex;justify-content:center;align-items:center;gap:16px;flex-wrap:wrap;margin:18px 0}.intro .picture-gallery img{width:130px;height:130px;object-fit:contain;border-radius:12px;background:#fff}