.member-course-group {
  border: 1px solid var(--line, #d5e5df);
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
}
.member-course-group + .member-course-group { margin-top: 12px; }
.member-course-group > summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  cursor: pointer;
  color: var(--ink, #203b34);
}
.member-course-group > summary::before { content: "▸"; color: var(--theme-accent, #0d8969); }
.member-course-group[open] > summary::before { content: "▾"; }
.member-course-group > summary > span { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.member-course-group > summary strong { display: block; font-size: 15px; }
.member-course-group > summary small { color: var(--muted, #60756e); }
.member-course-group > summary > b { font-size: 12px; white-space: nowrap; color: var(--theme-accent, #0d8969); }
.member-course-plans { display: grid; gap: 10px; padding: 0 12px 12px; max-height: 600px; overflow: auto; }
.member-course-plans .member-plan-card { margin: 0; }
.member-course-plans .member-plan-actions .detail-open { width: auto; min-width: 90px; font-size: 13px; padding: 8px 12px; }
.member-plan-help { font-size: 13px; color: var(--muted, #60756e); line-height: 1.6; }
#checkDuplicatePlans { margin: 0 0 14px; }
.duplicate-plan-review { margin-bottom: 20px; padding: 14px; border: 1px solid var(--line, #d5e5df); border-radius: 12px; background: var(--theme-accent-soft, #e2f6eb); }
.duplicate-plan-review[hidden] { display: none; }
.duplicate-plan-review h4 { margin: 0 0 8px; }
#duplicatePlanGroups { max-height: 70vh; overflow-y: auto; }
.duplicate-plan-review p { font-size: 13px; line-height: 1.6; overflow-wrap: anywhere; }
.duplicate-group { min-width: 0; margin: 16px 0; padding: 12px; border: 1px solid var(--line, #d5e5df); border-radius: 10px; background: #fff; }
.duplicate-group legend { font-size: 14px; font-weight: 600; overflow-wrap: anywhere; }
.duplicate-plan { padding: 12px 0; border-top: 1px solid var(--line, #d5e5df); }
.duplicate-plan-review .duplicate-plan label { display: flex; align-items: flex-start; gap: 8px; overflow-wrap: anywhere; }
.duplicate-plan-review .duplicate-plan input { flex: 0 0 auto; width: 16px; height: 16px; min-height: 0; padding: 0; margin: 3px 0 0; }
.duplicate-actions { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.duplicate-actions a { color: var(--theme-accent-strong, #0b6d53); }
.duplicate-plan-review .duplicate-actions button { width: auto; min-width: 100px; padding: 6px 12px; color: #a32222; }
.duplicate-actions button:disabled { opacity: .45; cursor: not-allowed; }
@media(max-width:600px) {
  .member-course-group > summary { padding: 12px; gap: 8px; }
  .member-course-plans { max-height: 65vh; padding: 0 8px 8px; }
}