/* ==== おすすめコース アコーディオン（scoped under .oc-board） ==== */
.oc-board, .oc-board * { box-sizing: border-box; }
.oc-board {
  width: 100%;
  max-width: 1100px;
  margin: 24px auto 0;
  text-align: left;
  font-family: "Noto Sans JP", sans-serif;
}
.oc-board .oc-board-note {
  text-align: center;
  font-size: 13px;
  color: #666;
  margin: 0 0 16px;
}
.oc-board .oc-category {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 10px;
  background: var(--cat-tint, #f5f5f5);
  border: 1px solid var(--cat-color, #ccc);
  height: fit-content;
}
@media (min-width: 768px) {
  .oc-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    align-items: start;
  }
  .oc-board .oc-board-note {
    grid-column: 1 / -1;
  }
  .oc-board .oc-category {
    margin-bottom: 0;
  }
}
.oc-board .oc-category__title {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  background: var(--cat-color, #888);
  color: #fff;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  line-height: 1.4;
  -webkit-appearance: none;
  appearance: none;
}
.oc-board .oc-title-text {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px;
}
.oc-board .oc-title-main {
  font-size: 16px;
  font-weight: 700;
}
.oc-board .oc-title-sub {
  font-size: 13px;
  font-weight: 500;
  opacity: .9;
}
.oc-board .oc-icon {
  flex: none;
  width: 20px;
  height: 20px;
  position: relative;
}
.oc-board .oc-icon::before,
.oc-board .oc-icon::after {
  content: "";
  position: absolute;
  background: #fff;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: transform .25s ease;
}
.oc-board .oc-icon::before { width: 16px; height: 2px; }
.oc-board .oc-icon::after { width: 2px; height: 16px; }
.oc-board .oc-category__title[aria-expanded="true"] .oc-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}
.oc-board .oc-category__title[aria-expanded="true"] {
  background: var(--cat-color-dark, #555);
}
.oc-board .oc-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
  background: var(--cat-tint, #f5f5f5);
}
.oc-board .oc-category__title[aria-expanded="true"] + .oc-panel {
  max-height: 3000px;
}
.oc-board .oc-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 16px 18px;
}
.oc-board .oc-item {
  background: #fff;
  border-radius: 8px;
  padding: 10px 14px;
  border-left: 4px solid var(--cat-color, #888);
}
.oc-board .oc-item__title {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 700;
  color: #222;
  line-height: 1.5;
}
.oc-board .oc-item__info { margin: 0; }
.oc-board .oc-item__info p {
  margin: 0;
  font-size: 12.5px;
  color: #444;
  line-height: 1.6;
}
@media (max-width: 767px) {
  .oc-board { padding: 0 4px; }
  .oc-board .oc-title-text { flex-direction: column; gap: 4px; }
  .oc-board .oc-category__title { padding: 12px 14px; }
}