.mtr-course { color: #253e35; }
.mtr-course .page__contents { display: block; max-width: 1060px; }
.mtr-course-guide { border-left: 4px solid #45654e; padding-left: 28px; margin-bottom: 56px; }
.mtr-course-guide p { line-height: 1.9; margin: 0 0 16px; }
.mtr-course-guide .mtr-course-note { font-size: 14px; color: #606b61; }
.mtr-course-jumps { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.mtr-course-jumps a { padding: 8px 0; text-decoration: underline; text-underline-offset: 5px; font-size: 14px; }
.mtr-course-chapter { margin-bottom: 56px; scroll-margin-top: 110px; }
.mtr-course header h2 { font-size: clamp(23px, 3vw, 30px); line-height: 1.55; margin: 8px 0 12px; }
.mtr-course header > p { line-height: 1.9; }
.mtr-course .mtr-course-list { list-style: none; margin: 24px 0 0; padding: 0; }
.mtr-course-row { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 24px; align-items: start; padding: 26px 0; border-top: 1px solid #cdd6c9; }
.mtr-course-row.is-pending { grid-template-columns: 76px minmax(0, 1fr) auto; }
.mtr-course-row:last-child { border-bottom: 1px solid #cdd6c9; }
.mtr-course-row.has-thumbnail { grid-template-columns: 76px 260px minmax(0, 1fr); }
.mtr-course-thumbnail { display: block; }
.mtr-course-thumbnail img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: contain; }
.mtr-basics-thumbnail { margin: 24px 0 32px; }
.mtr-basics-thumbnail img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: contain; }
.mtr-course-number { display: flex; gap: 3px; align-items: baseline; font-size: 32px; font-weight: 700; line-height: 1.5; white-space: nowrap; }
.mtr-course-number small { font-size: 13px; }
.mtr-course-copy h3 { font-size: clamp(18px, 2.2vw, 23px); line-height: 1.65; margin: 0 0 8px; }
.mtr-course-copy h3 a { display: inline-block; text-decoration: underline; text-decoration-color: #b5c5ae; text-underline-offset: 5px; text-decoration-thickness: 1px; }
.mtr-course-copy h3 a:hover { text-decoration-color: currentColor; }
.mtr-course-copy > p { font-size: 15px; line-height: 1.85; margin: 0; }
.mtr-course-copy > .mtr-course-theme { font-size: 13px; color: #5b705c; margin-bottom: 4px; }
.mtr-course-state { padding: 4px 10px; background: #e6eddf; font-size: 12px; white-space: nowrap; border-radius: 4px; line-height: 1.8; }
.is-pending .mtr-course-state { background: #eeede8; color: #666; }
.mtr-course-readings { border-top: 3px solid #637555; background: #edf0e6; padding: 32px; margin-top: 68px; scroll-margin-top: 110px; }
.mtr-course-position { font-size: 14px; margin: 0 0 18px; line-height: 1.8; }
.mtr-course-position a { text-decoration: underline; text-underline-offset: 4px; }
.mtr-course-navigation { display: flex; flex-wrap: wrap; gap: 16px 24px; margin-top: 40px; }
.mtr-course-navigation a { flex: 1 1 240px; border-top: 1px solid #cdd6c9; padding: 20px 0; line-height: 1.8; }
.mtr-course-navigation small { display: block; color: #5b705c; font-size: 13px; margin-bottom: 6px; }
.mtr-course-navigation span { text-decoration: underline; text-underline-offset: 4px; }
.mtr-course-navigation .mtr-course-navigation-index { flex-basis: 100%; text-align: center; }
@media (max-width: 600px) {
  .mtr-course-guide { padding-left: 16px; margin-bottom: 40px; }
  .mtr-course-row, .mtr-course-row.is-pending { grid-template-columns: 48px minmax(0, 1fr); gap: 6px 14px; padding: 22px 0; }
  .mtr-course-number { font-size: 25px; gap: 1px; }
  .mtr-course-number small { font-size: 10px; }
  .mtr-course-copy { grid-column: 2; grid-row: 1 / span 2; }
  .mtr-course-state { grid-column: 1; font-size: 10px; padding: 3px 4px; text-align: center; }
  .mtr-course-readings { padding: 24px 16px; margin-top: 48px; }
  .mtr-course-navigation a { flex-basis: 100%; }
  .mtr-course-row.has-thumbnail { grid-template-columns: 48px minmax(0, 1fr); }
  .has-thumbnail .mtr-course-thumbnail { grid-column: 2; grid-row: 1; margin-bottom: 10px; }
  .has-thumbnail .mtr-course-copy { grid-column: 2; grid-row: 2; }
  .has-thumbnail .mtr-course-state { grid-column: 1; grid-row: 2; }
}
@media (min-width: 601px) and (max-width: 900px) {
  .mtr-course-row.has-thumbnail { grid-template-columns: 60px 200px minmax(0, 1fr); gap: 18px; }
  .has-thumbnail .mtr-course-state { grid-column: 1; grid-row: 2; }
}