/* STEPカードを3列レイアウトにする */
.step-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* 最大3列 */
  gap: 20px;
  margin-top: 20px;
  align-items: stretch;
}

/* レスポンシブ対応 */
@media (max-width: 900px) {
  .step-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .step-list { grid-template-columns: 1fr; }
}

/* カードスタイル */
.step-list .card {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s, box-shadow 0.2s;
  height: 100%;
  box-sizing: border-box;
}

.step-list .card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

.step-list .card h2 {
  font-size: 1.2em;
  margin-bottom: 12px;
  color: #333;
}

.step-list .card p {
  font-size: 0.95em;
  color: #555;
  margin-bottom: 16px;
  line-height: 1.4;
  flex-grow: 1;
}

.step-list .card .btn {
  align-self: flex-start;
  padding: 8px 14px;
  background-color: var(--leaf);
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
  font-size: 0.95em;
  transition: background-color 0.2s;
}

.step-list .card .btn:hover {
  background-color: #388e3c;
}

/* 広告カード */
.step-list .ad-card {
  background-color: #fafafa;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  height: 100%;
  max-height: 300px;
  overflow: hidden;
  box-sizing: border-box;
}
.step-list .ad-spacer {
  font-size: 0.75rem;
  color: #999;
  margin-bottom: 8px;
}
.step-list .ad-card ins.adsbygoogle {
  display: block;
  width: 100%;
  height: 200px !important;
}