// 学习模块主页面样式
.learning-container { padding: 12px 12px 72px 12px; }
.module-header h1 { font-size: 18px; margin: 0 0 8px 0; color: #1A4B8C; }

.feature-group h2 { font-size: 16px; margin: 12px 0 8px; color: #303B49; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.card {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  text-decoration: none; background: #FFFFFF; border-radius: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); padding: 12px;
}
.card mat-icon { background: #E8F1FD; color: #2D6BC9; border-radius: 10px; padding: 8px; }
.card span { color: #1A4B8C; }