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 .exercise-navigation{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:0 auto 20px;max-width:820px}.nav-button{display:inline-block;padding:10px 14px;border:1px solid #cbd5e1;border-radius:10px;color:#0f766e;text-decoration:none;font-weight:700}.nav-button.primary{background:#0f766e;color:#fff;border-color:#0f766e}.exercise-counter{color:#64748b;font-size:14px}@media(max-width:640px){.exercise-navigation{gap:8px}.nav-button{font-size:13px;padding:9px}.exercise-counter{font-size:12px}}
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.retry-feedback{margin-top:18px;padding:14px 16px;border:1px solid #fbbf24;border-radius:12px;background:#fffbeb;color:#78350f}.retry-feedback p{margin:6px 0}.retry-feedback code{padding:3px 6px;border-radius:5px;background:#fef3c7;color:#713f12}
.exercise-image{margin:22px 0}.exercise-image img{display:block;width:100%;max-height:420px;object-fit:cover;border-radius:14px}.exercise-image figcaption{margin-top:6px;font-size:13px}.exercise-image a{color:#0f766e}
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