.hangul-entry{display:inline-flex;align-items:center;gap:12px;min-height:46px;margin-bottom:18px;padding:8px 14px;color:var(--accent-text);border:1px solid var(--line);border-radius:10px;text-decoration:none;font-size:14px}.hangul-entry b{font-size:21px;font-weight:500}.hangul-entry:hover{background:var(--soft)}.hangul-main{max-width:910px;padding-top:25px;padding-bottom:25px}.back-link{color:var(--accent-text);font-size:14px;display:inline-flex;align-items:center;min-height:44px;text-decoration:none}.back-link:hover{text-decoration:underline}.lesson-intro{margin:22px 0}.lesson-intro h1{font-size:clamp(28px,5vw,42px);letter-spacing:-.04em;line-height:1.35;font-weight:500;margin:0 0 14px}.lesson-intro p{font-size:16px;color:var(--muted);line-height:1.85;max-width:72ch;margin:0}.lesson-nav{display:flex;flex-wrap:wrap;gap:8px 18px;padding:12px 0;border-block:1px solid var(--line)}.lesson-nav a{display:inline-flex;align-items:center;color:var(--accent-text);font-size:14px;min-height:44px}.lesson-status{color:var(--muted);font-size:13px;min-height:22px;margin:16px 0}.lesson-status[data-state="error"]{color:var(--danger)}.lesson-section{padding:32px 0;border-bottom:1px solid var(--line);scroll-margin-top:20px}.lesson-section h2{font-size:27px;line-height:1.4;font-weight:500;margin:0 0 18px;letter-spacing:-.03em}.lesson-section h3{font-size:18px;font-weight:500;line-height:1.6;margin:24px 0 12px}.lesson-section p{line-height:1.9;font-size:15px;max-width:78ch;overflow-wrap:anywhere}.contrast-examples{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.listen-letter{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:8px 10px;min-height:44px;border:1px solid var(--line);border-radius:9px;background:var(--card);color:var(--accent-text);line-height:1.6;font-size:15px}.listen-letter:hover{background:var(--soft)}[data-sound][aria-busy="true"]{opacity:.6}.letter-table{border-collapse:collapse;width:100%;margin:26px 0 12px;table-layout:fixed}.letter-table caption{text-align:left;font-size:17px;font-weight:500;padding-bottom:14px}.letter-table th,.letter-table td{text-align:left;border-bottom:1px solid var(--line);padding:12px 6px;overflow-wrap:anywhere;font-size:13px}.letter-table thead th{font-weight:500;color:var(--muted);font-size:12px}.letter-table th:first-child{width:15%}.letter-table th:nth-child(2){width:35%}.letter-table th:nth-child(3){width:20%}.letter-table tbody th{font-size:30px;font-weight:500}.vowel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.vowel-card{padding:18px;background:var(--study-bg);border-radius:14px;border:1px solid var(--study-line)}.vowel-heading{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.vowel-heading h4{font-size:36px;font-weight:500;margin:0 auto 0 0}.reading-aid{font-size:14px;color:var(--muted)}.vowel-card p{font-size:13px;margin:14px 0 0;line-height:1.8}.syllable-builder,.hangul-practice{padding:22px;background:var(--study-bg);border:1px solid var(--study-line);border-radius:16px;margin-top:20px}.letter-pickers{display:grid;grid-template-columns:1fr 1fr;gap:16px}.letter-pickers label{font-size:13px;min-width:0}.letter-pickers select{display:block;width:100%;min-height:48px;padding:10px;border:1px solid var(--line);border-radius:9px;background:var(--card);color:var(--ink);font-size:16px;margin-top:8px}.built-syllable{text-align:center;padding-top:24px}.built-syllable p{font-size:20px!important;margin:0 0 12px;max-width:none}.built-syllable .listen-letter{min-width:130px;font-size:64px;line-height:1.4;gap:18px}.hangul-practice{text-align:center}.hangul-practice #practiceCount{font-size:12px;color:var(--muted)}#practiceSyllable{font-size:64px;line-height:1.4;margin:12px 0;max-width:none}.practice-options{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:18px 0}.practice-options button{font-size:28px;min-height:64px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink)}.practice-options button[aria-pressed="true"]{background:var(--green);color:var(--on-accent)}#practiceFeedback{font-size:14px;min-height:28px;max-width:none}.hangul-practice button:disabled{opacity:.5;cursor:default}.editorial{margin-bottom:24px}.editorial li{font-size:14px;margin:10px 0;overflow-wrap:anywhere}.editorial a{color:var(--accent-text)}.editorial p{font-size:13px}
@media(max-width:600px){.hangul-main{padding-top:18px}.lesson-intro{margin:17px 0}.lesson-intro p{font-size:15px}.lesson-nav{gap:2px 16px}.lesson-section{padding:26px 0}.vowel-grid{grid-template-columns:1fr}.letter-table th,.letter-table td{padding:12px 3px;font-size:12px}.letter-table .listen-letter{padding:8px 6px;gap:4px;font-size:13px}.letter-table .icon{width:16px;height:16px}.letter-table th:first-child{width:17%}.letter-table th:nth-child(2){width:34%}.letter-table th:nth-child(3){width:19%}.letter-table tbody th{font-size:27px}.letter-pickers{grid-template-columns:1fr}.syllable-builder,.hangul-practice{padding:18px}.practice-options{gap:8px}.practice-options button{font-size:25px}}
.lesson-status{position:sticky;top:0;z-index:3;background:var(--paper);padding:10px 0;border-bottom:1px solid var(--line)}