/* UDC-only chooser routes adapt source course_check/custom_quiz setup;
   there is no standalone 99-set catalog in the reference. */
.topic-practice-reference{max-width:880px;margin:48px auto 60px;padding:0 16px;line-height:1.5}.topic-practice-reference>header{text-align:center;margin-bottom:24px}.topic-practice-reference h1{font-size:32px;font-weight:500;margin:0 0 16px}.topic-practice-reference header p{font-size:20px;font-weight:300;color:#6c757d}.topic-practice-setup{border:1px solid #dee2e6;border-radius:12px;padding:48px 24px;text-align:center;background:white;margin:24px 0}.topic-practice-setup h2{font-size:28px;font-weight:500;margin:0 0 24px}.topic-practice-setup select{width:100%;margin:12px 0 24px;font-size:16px}.topic-practice-setup button{padding:12px 48px;border-radius:8px;font-size:20px;font-weight:600}.topic-practice-setup label{display:block}.checkpoint-reference{max-width:800px;margin:32px auto;padding:0 16px}.checkpoint-reference>header{padding:32px;border-radius:16px;background:linear-gradient(135deg,#667eea22,#764ba222);margin-bottom:32px}.checkpoint-reference h1{font-size:28px;font-weight:700;margin:0}.checkpoint-reference header p{font-size:16px;font-weight:400;margin:8px 0 0}.topic-practice-links{text-align:center;margin:24px 0}
.learning-state-reference{max-width:700px;margin:48px auto;padding:32px;border:1px solid #dee2e6;border-radius:12px;background:#fff;box-shadow:0 2px 4px #00000013}.learning-state-reference h1{font-size:28px;font-weight:500;line-height:1.2;margin-top:0}.learning-state-reference .button,.learning-state-reference button{padding:12px 32px;border-radius:8px;font-weight:600}.learning-state-reference [role=alert]{padding:16px;background:#fff3cd;border:1px solid #ffecb5;border-radius:6px}
.catalog-reference{max-width:1320px;padding:24px 12px;margin:auto}.catalog-reference>header{text-align:center;margin-bottom:24px}.catalog-reference h1{font-size:clamp(34px,4vw,56px);font-weight:700;line-height:1.2}.catalog-reference header p{font-size:20px;font-weight:300;color:#6c757d}.catalog-reference-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.catalog-reference article{border:1px solid #dee2e6;border-radius:12px;padding:24px;background:white;box-shadow:0 2px 4px #00000013}.catalog-reference h2{font-size:24px;font-weight:500}.catalog-reference .button{padding:12px 32px;border-radius:8px;font-weight:600}
@media(max-width:767px){.catalog-reference-grid{grid-template-columns:1fr}.topic-practice-reference{margin-top:24px}.topic-practice-setup{padding:32px 20px}.topic-practice-setup button{padding:12px 24px;font-size:18px}.learning-state-reference{padding:24px}.checkpoint-reference>header{padding:24px}.catalog-reference article{padding:20px}}