.quiz-chapter-setup{max-width:1120px;margin:34px auto;padding:30px}.chapter-heading h1{margin:6px 0 24px;font-size:28px}.chapter-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px;max-height:530px;overflow:auto;padding-right:5px}.chapter-card{min-height:52px;border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--ink);font-weight:800;cursor:pointer;transition:transform .15s,border-color .15s,background .15s}.chapter-card:hover{border-color:#938ef8;transform:translateY(-1px)}.chapter-card.selected{border-color:#625df5;background:#625df5;color:#fff;box-shadow:0 8px 18px rgba(98,93,245,.22)}.quiz-count-buttons{display:flex;justify-content:space-between;align-items:center;gap:18px;border-top:1px solid var(--line);margin-top:26px;padding-top:24px}.quiz-count-buttons span{color:#69758c}.quiz-count-buttons strong{color:#3933a5}.quiz-count-buttons div{display:flex;gap:10px}.quiz-count-buttons .btn{min-width:112px}@media(max-width:900px){.chapter-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media(max-width:600px){.quiz-chapter-setup{padding:21px}.chapter-grid{grid-template-columns:repeat(2,minmax(0,1fr));max-height:430px}.quiz-count-buttons{align-items:stretch;flex-direction:column}.quiz-count-buttons div{display:grid;grid-template-columns:1fr 1fr}.quiz-count-buttons .btn{min-width:0}}