.curriculum-course-intro { max-width: 950px; text-align: center; }
.curriculum-course-intro p { margin: 0; color: #4b625b; line-height: 1.8; }
.curriculum-subject-note { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; color: #245348; font-size: .9rem; }
.curriculum-subject-note strong { font-weight: 650; }
.curriculum-subject-note span { color: #52675f; }
.curriculum-resource-nav { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; padding: 10px; border: 1px solid #dbe7e1; border-radius: 16px; background: #f6faf7; }
.curriculum-resource-nav a { padding: 12px 18px; border-radius: 10px; color: #214b40; font-weight: 650; text-decoration: none; line-height: 1.45; }
.curriculum-resource-nav a:hover, .curriculum-resource-nav a:focus-visible { background: #e1efe7; }
:is(#curriculum-subjects, #video-lessons, #exam-resources, #sample-pdfs) { scroll-margin-top: 110px; }
.curriculum-video-grid, .curriculum-outline-grid, .curriculum-exam-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; align-items: start; }
.curriculum-video-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; align-items: stretch; }
.curriculum-video-group-title { margin: 32px 0 18px; font-size: 1.25rem; line-height: 1.5; color: #245348; }
.curriculum-video-card, .curriculum-exam-card { min-width: 0; padding: 24px; border: 1px solid #dce7e1; border-radius: 18px; background: #f8fbf9; }
.curriculum-video-card { display: flex; flex-direction: column; padding: 18px; background: #fff; border-color: var(--box-border, #89c7b5); }
.curriculum-video-cover { display: flex; flex-direction: column; justify-content: center; flex: 0 0 auto; gap: 8px; min-height: 144px; padding: 18px; margin-bottom: 14px; border-radius: 10px; background: var(--box-bg, #c4e8dd); color: #245348; overflow-wrap: anywhere; }
.curriculum-video-cover span { font-size: .78rem; font-weight: 650; }
.curriculum-video-cover strong { font-size: 1.15rem; line-height: 1.4; }
.curriculum-video-card h3, .curriculum-exam-card h3 { margin: 0 0 16px; font-size: 1.2rem; line-height: 1.5; overflow-wrap: anywhere; }
.curriculum-video-card :is(h3,h4) { margin: 0 0 12px; font-size: 1.05rem; font-weight: 650; line-height: 1.5; overflow-wrap: anywhere; }
.curriculum-video-card > .button { align-self: flex-start; margin-top: auto; min-height: 44px; padding: 10px 18px; background: #183e32; border-color: #183e32; color: #fff; font-size: .9rem; line-height: 1.5; }
.curriculum-video-card > .button:hover { background: #285444; border-color: #285444; }
.curriculum-video-note { margin: 0 0 16px; color: #52675f; font-size: .9rem; }
.curriculum-topic, .curriculum-question-list details { min-width: 0; border: 1px solid #dce7e1; border-radius: 12px; background: #f7faf8; }
.curriculum-topic summary, .curriculum-question-list summary { display: flex; justify-content: space-between; gap: 16px; padding: 18px 20px; cursor: pointer; color: #244c40; font-weight: 650; line-height: 1.6; overflow-wrap: anywhere; list-style: none; }
:is(.curriculum-topic, .curriculum-question-list details) > summary::-webkit-details-marker { display: none; }
:is(.curriculum-topic, .curriculum-question-list details) > summary::after { content: '+'; flex: 0 0 auto; }
:is(.curriculum-topic, .curriculum-question-list details)[open] > summary::after { content: '−'; }
.curriculum-topic p { margin: 0; padding: 0 20px 20px; color: #52675f; line-height: 1.8; }
.curriculum-question-list { display: grid; gap: 10px; margin-top: 20px; }
.curriculum-question-list summary { padding: 15px 18px; font-size: .95rem; }
.curriculum-question-list ol { margin: 0; padding: 0 24px 20px 38px; color: #4b625b; }
.curriculum-question-list li { margin-top: 12px; line-height: 1.7; }
.curriculum-exam-card p { color: #52675f; line-height: 1.8; }
.curriculum-resource-empty, .curriculum-activities, .curriculum-archive-note { padding: 28px; border: 1px solid #dce7e1; border-radius: 18px; background: #f2f7f4; }
.curriculum-resource-empty p, .curriculum-activities p, .curriculum-activities li, .curriculum-archive-note p { color: #4b625b; line-height: 1.8; }
.curriculum-activities h2 { margin-top: 0; }
.curriculum-activities li { margin-top: 10px; }
.curriculum-level-links { display: flex; flex-wrap: wrap; gap: 12px; }
.curriculum-subject-access { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 26px; padding: 24px; border-radius: 14px; background: #eaf3ed; }
.curriculum-subject-access p { margin: 0; max-width: 560px; color: #3f5d50; line-height: 1.7; }
.curriculum-subject-access .button { flex: 0 0 auto; }
.curriculum-paper-list { padding: 0; list-style: none; }
.curriculum-paper-list li { display: flex; gap: 16px; justify-content: space-between; padding-block: 14px; border-bottom: 1px solid #dce7e1; }
.curriculum-paper-list span { color: #52675f; }
.curriculum-unit-video-list { display: grid; gap: 16px; }
.curriculum-unit-video { min-width: 0; border: 1px solid var(--box-border, #89c7b5); border-radius: 16px; overflow: hidden; background: #fff; }
.curriculum-unit-video > summary { display: flex; align-items: center; gap: 20px; padding: 20px 24px; background: var(--box-pale, #e5f5ef); color: #183e32; cursor: pointer; list-style: none; }
.curriculum-unit-video > summary::-webkit-details-marker { display: none; }
.curriculum-unit-video > summary::after { content: '+'; flex: 0 0 auto; font-size: 1.4rem; color: var(--box-accent, #2d7f71); }
.curriculum-unit-video[open] > summary::after { content: '−'; }
.curriculum-unit-video > summary:focus-visible { outline: 3px solid var(--box-accent, #2d7f71); outline-offset: -4px; }
.curriculum-unit-heading { display: grid; flex: 1; gap: 4px; min-width: 0; }
.curriculum-unit-heading strong { font-size: 1.05rem; line-height: 1.55; overflow-wrap: anywhere; }
.curriculum-unit-label { color: var(--box-accent, #2d7f71); font-size: .8rem; font-weight: 700; }
.curriculum-unit-count { flex: 0 0 auto; color: #455d53; font-size: .82rem; line-height: 1.5; }
.curriculum-unit-lesson { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 20px 24px; border-top: 1px solid #e4ece7; }
.curriculum-unit-lesson > div { min-width: 0; }
.curriculum-unit-lesson h3 { margin: 0; font-size: 1rem; font-weight: 650; line-height: 1.6; overflow-wrap: anywhere; }
.curriculum-unit-lesson .curriculum-video-note { margin: 6px 0 0; font-size: .82rem; }
.curriculum-unit-lesson .button { flex: 0 0 auto; min-height: 44px; padding: 10px 18px; font-size: .9rem; white-space: nowrap; }
.curriculum-unit-empty { padding: 22px 24px; border-top: 1px solid #e4ece7; }
.curriculum-unit-empty p { margin: 0 0 16px; color: #52675f; line-height: 1.7; }
.curriculum-subject-exams .curriculum-exam-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.7fr); }
.curriculum-important-questions { margin: 20px 0 0; padding-left: 24px; color: #3f5d50; }
.curriculum-important-questions li { padding-left: 5px; line-height: 1.8; overflow-wrap: anywhere; }
.curriculum-important-questions li + li { margin-top: 16px; }
.curriculum-important-questions li::marker { color: #2d7f71; font-weight: 700; }
.curriculum-sample-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.curriculum-sample-card { min-width: 0; padding: 24px; border: 1px solid #dce7e1; border-radius: 18px; background: #f8fbf9; }
.curriculum-sample-label { margin: 0 0 10px; color: #52675f; font-size: .9rem; line-height: 1.6; }
.curriculum-sample-card h3, .curriculum-subject-samples .curriculum-resource-empty h3 { margin: 0 0 16px; font-size: 1.2rem; line-height: 1.5; }
.curriculum-subject-samples .curriculum-resource-empty p { margin-bottom: 0; }
.curriculum-pdf-preview { margin-top: 20px; }
.curriculum-pdf-preview > summary { padding: 12px 0; cursor: pointer; color: #214b40; font-weight: 650; }
.curriculum-pdf-preview object { display: block; width: 100%; height: 650px; border: 1px solid #dce7e1; border-radius: 10px; background: #fff; }
@media (min-width: 1025px) {
  .curriculum-level-grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 820px; margin-inline: auto; }
}
@media (min-width: 761px) and (max-width: 1100px) {
  .curriculum-video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .curriculum-video-grid, .curriculum-outline-grid, .curriculum-exam-grid { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .curriculum-video-card, .curriculum-exam-card { padding: 18px; }
  .curriculum-video-cover { min-height: 120px; padding: 16px; }
  .curriculum-resource-nav { display: grid; grid-template-columns: minmax(0, 1fr); }
  .curriculum-resource-nav a { padding: 12px; }
  .curriculum-subject-access { align-items: stretch; flex-direction: column; padding: 22px; }
  .curriculum-subject-access .button { white-space: normal; }
  .curriculum-resource-empty, .curriculum-activities, .curriculum-archive-note { padding: 24px; }
  .curriculum-subject-exams .curriculum-exam-grid, .curriculum-sample-grid { grid-template-columns: minmax(0, 1fr); }
  .curriculum-unit-video > summary { flex-wrap: wrap; column-gap: 12px; row-gap: 8px; padding: 18px; }
  .curriculum-unit-heading { flex-basis: calc(100% - 36px); }
  .curriculum-unit-video > summary::after { order: 1; margin-left: auto; }
  .curriculum-unit-count { order: 2; flex-basis: 100%; }
  .curriculum-unit-lesson { align-items: flex-start; flex-direction: column; gap: 14px; padding: 18px; }
  .curriculum-unit-empty, .curriculum-sample-card { padding: 18px; }
  .curriculum-pdf-preview object { height: 480px; }
}