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#0000;border-radius:16px;flex-direction:column;align-items:center;gap:6px;padding:20px 12px;transition:all .15s;display:flex;position:relative}.entry-hub-card:hover{border-color:var(--accent);background:var(--surface)}.entry-hub-card.dimmed{opacity:.4;pointer-events:none}.entry-hub-card-icon{font-size:28px}.entry-hub-card-title{color:var(--text);font-size:15px;font-weight:700}.entry-hub-card-desc{color:var(--text-dim);font-size:12px}.entry-hub-badge{background:var(--accent);color:var(--bg);border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;font-size:12px;font-weight:700;display:flex;position:absolute;top:8px;right:8px}.char-grid{margin:12px 0 16px}.char-grid-group{margin-bottom:10px}.char-grid-group-label{color:var(--text-dim);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px;padding-left:2px;font-size:11px}.char-grid-chars{flex-wrap:wrap;gap:4px;display:flex}.char-grid-cell{border:1px solid var(--border);background:var(--surface);border-radius:6px;flex-direction:column;align-items:center;width:40px;padding:4px 2px;display:flex}.char-grid-cell.mastered{border-color:var(--accent);background:#58cc0214}.char-grid-cell.review{border-color:var(--phase-review);background:#1cb0f614}.char-grid-cell.learning{border-color:var(--warn);background:#ffc80014}.char-grid-cell.due{box-shadow:0 0 0 1px var(--streak)}.char-grid-glyph{font-size:18px;line-height:1.2}.char-grid-acc{color:var(--text-dim);font-variant-numeric:tabular-nums;font-size:9px}.group-intro{text-align:center}.group-intro-header{justify-content:center;align-items:center;gap:8px;margin-bottom:12px;display:flex}.group-intro-icon{font-size:32px}.group-intro-desc{color:var(--text-dim);margin-bottom:16px;font-size:14px;line-height:1.5}.group-intro-pattern{color:var(--phase-learn);background:var(--surface2);border-radius:8px;margin-bottom:16px;padding:8px 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16px;display:flex}.example-native{font-size:22px;font-weight:700}.example-english{color:var(--text-dim);font-size:14px}.exercise-progress-bar{background:var(--surface2);border-radius:2px;height:4px;margin-bottom:8px}.exercise-progress-fill{background:var(--accent);border-radius:2px;height:100%;transition:width .3s}.exercise-counter{color:var(--text-dim);text-align:center;margin-bottom:12px;font-size:12px}.exercise-content{text-align:center}.exercise-prompt{color:var(--text-dim);margin-bottom:12px;font-size:16px}.exercise-romanization{justify-content:center;align-items:center;gap:8px;margin-bottom:16px;display:flex}.romanization-display{color:var(--phase-review);font-size:28px;font-weight:700}.audio-btn{background:var(--surface2);cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-size:18px;display:flex}.audio-btn-large{width:60px;height:60px;margin:0 auto 16px;font-size:22px}.hangul-combine-initial,.hangul-combine-medial{color:var(--text);font-size:48px;font-weight:700}.hangul-combine-plus{color:var(--text-dim);font-size:24px}.hangul-option-large{flex-direction:column;gap:4px;display:flex}.minimal-pair-char{font-size:40px}.minimal-pair-label{color:var(--text-dim);font-size:14px}.reference-chart{max-width:420px;margin:0 auto;padding:20px}.reference-chart h2{text-align:center;margin-bottom:16px}.chart-tabs{gap:8px;margin-bottom:16px;display:flex}.chart-tab{background:var(--surface2);color:var(--text-dim);cursor:pointer;border:2px solid 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.15s;display:flex}.reference-chart-cell.learned{border-color:var(--accent)}.reference-chart-cell.unlearned{opacity:.3}.cell-char{font-size:22px;font-weight:700}.cell-rom{color:var(--text-dim);font-size:10px}.reference-chart-popup{z-index:100;background:#000000b3;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.popup-content{background:var(--surface);text-align:center;border-radius:16px;max-width:300px;padding:24px}.popup-rom{color:var(--phase-review);margin-bottom:8px;font-size:18px}.popup-example{color:var(--text-dim);margin:12px 0;font-size:14px}.syllable-grid 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#0006}.feedback-fab:hover{transform:scale(1.05)}.feedback-fab:active{transform:scale(.97)}.feedback-fab-panel{z-index:1000;background:var(--surface,#1c1f26);border:1px solid var(--border,#2a2f3a);border-radius:12px;flex-direction:column;max-width:360px;max-height:70vh;display:flex;position:fixed;bottom:24px;left:24px;right:24px;overflow:hidden;box-shadow:0 12px 32px #00000080}.feedback-fab-header{border-bottom:1px solid var(--border,#2a2f3a);justify-content:space-between;align-items:center;padding:8px 8px 8px 12px;display:flex}.feedback-fab-tabs{gap:4px;display:flex}.feedback-fab-tab{color:var(--text-muted,#9ba0ad);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:6px 12px;font-size:13px;font-weight:500}.feedback-fab-tab.active{background:var(--phase-learn,#4a90e2);color:#fff}.feedback-fab-close{color:var(--text-muted,#9ba0ad);cursor:pointer;background:0 0;border:none;padding:4px 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