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var(--accent-soft)}.agchat-send{flex-shrink:0;border:none;background:var(--accent);color:var(--accent-fg);border-radius:var(--radius-pill);min-height:var(--tap-child);padding:9px 18px;font-weight:var(--weight-semibold);cursor:pointer}.agchat-send:disabled{opacity:.5;cursor:not-allowed}.report-summary{margin:0 0 var(--space-3);font-size:var(--text-base);line-height:var(--leading-normal)}.report-summary strong{white-space:nowrap}.tcard{border:1px solid var(--border);border-radius:var(--radius);padding:var(--space-4);background:var(--surface);box-shadow:var(--shadow-1)}.tcard--current{border-color:var(--accent)}.tcard-head{display:flex;align-items:center;gap:var(--space-3)}.tcard-avatar{flex:0 0 auto;width:48px;height:48px;border-radius:var(--radius-pill);overflow:hidden;display:grid;place-items:center;background:var(--n-5);color:var(--muted)}.tcard-avatar 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var(--border)}.question-card:last-of-type{border-bottom:none;margin-bottom:8px}.question-card-head{font-size:.8rem}.metacog{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:10px}.confidence-pick{display:inline-flex;align-items:center;gap:6px}.confidence-dot{width:28px;height:28px;border:1px solid var(--border);border-radius:50%;background:transparent;color:var(--muted);cursor:pointer;font-size:.8rem;line-height:1}.confidence-dot.selected{border-color:var(--accent, #4f7cff);background:var(--accent, #4f7cff);color:var(--accent-fg)}.hints-tiered{display:flex;flex-direction:column;gap:8px;width:100%}.hint-reveal-btn{align-self:flex-start;border:1px solid var(--border);border-radius:999px;background:transparent;color:var(--accent, #4f7cff);cursor:pointer;padding:4px 12px;font-size:.85rem}.hint-reveal-btn:hover{background:var(--surface-2, rgba(79, 124, 255, .08))}.hint-tier{border:1px solid var(--border);border-left:3px solid var(--muted);border-radius:6px;padding:8px 10px}.hint-tier--nudge{border-left-color:#8aa0c6}.hint-tier--strategy{border-left-color:#4f7cff}.hint-tier--worked_step{border-left-color:var(--good, #2bb673)}.hint-tier__label{display:inline-block;font-size:.7rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-bottom:2px}.hint-tier__text{margin:0}.hint-tier__selfexplain{margin:6px 0 0;font-style:italic;color:var(--muted);font-size:.9rem}.feedback{border:1px solid var(--border);border-radius:8px;padding:12px;margin-top:12px}.feedback.correct{border-color:var(--good)}.feedback.incorrect{border-color:var(--bad)}.feedback.partial{border-color:var(--warn)}.feedback h3{margin:0 0 6px;font-size:1rem}.feedback h3 .partial{color:var(--warn)}.practice-batch-header{margin-bottom:20px}.practice-loading-bar{height:4px;background:var(--border);border-radius:2px;overflow:hidden;margin-top:12px;max-width:300px}.practice-loading-fill{height:100%;background:var(--accent);border-radius:2px;transition:width .4s 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7px;border-radius:999px;background:linear-gradient(135deg,#7c3aed,#2563eb);color:#fff;font-size:.7rem;font-weight:600;letter-spacing:.04em;vertical-align:middle}.level-promotion-banner,.stopped-early-banner{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;margin:16px 0;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface-2, rgba(0, 0, 0, .03))}.stopped-early-banner{border-color:var(--accent)}.level-promotion-icon,.stopped-early-icon{font-size:1.5rem;line-height:1.4}.level-promotion-text strong,.stopped-early-text strong{display:block;margin-bottom:2px}.level-promotion-text p,.stopped-early-text p{margin:0;color:var(--muted);font-size:.9rem}.app{max-width:720px;margin:0 auto;padding:32px 20px 80px}header{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:24px;border-bottom:1px solid var(--border);padding-bottom:12px}header h1{margin:0;font-size:1.5rem;letter-spacing:-.01em}header 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