/* ========================================
   学而升本官网 - 服务优势
   ======================================== */

.advantages {
  width: 100%;
  padding: 80px 0;
  background: #F9F9F9;
}

.advantages__container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 80px;
}

.advantages__title {
  font-size: 36px;
  font-weight: 700;
  color: #0A1628;
  text-align: center;
  line-height: 1.3;
  margin-bottom: 12px;
}

.advantages__subtitle {
  font-size: 17px;
  color: #6B7280;
  text-align: center;
  line-height: 1.5;
  margin-bottom: 40px;
}

/* 卡片行 */
.advantages__cards {
  display: flex;
  gap: 24px;
}

/* 单张卡片 */
.adv-card {
  flex: 1;
  background: #FFFFFF;
  border-radius: 24px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
  box-shadow: 0 6px 24px rgba(1, 77, 178, 0.05);
  transition: transform 0.2s, box-shadow 0.2s;
}

.adv-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(1, 77, 178, 0.1);
}

.adv-card__icon-circle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  flex-shrink: 0;
}

.adv-card__icon-circle--blue {
  background: #E8F0FE;
  color: #014DB2;
}

.adv-card__icon-circle--green {
  background: #D1FAE5;
  color: #10B981;
}

.adv-card__icon-circle--amber {
  background: #FEF3C7;
  color: #92400E;
}

.adv-card__icon-circle--purple {
  background: #EDE9FE;
  color: #6D28D9;
}

.adv-card__title {
  font-size: 19px;
  font-weight: 700;
  color: #0A1628;
  line-height: 1.3;
}

.adv-card__desc {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.6;
}

/* 响应式 */
@media (max-width: 1024px) {
  .advantages__container {
    padding: 0 24px;
  }

  .advantages__cards {
    flex-wrap: wrap;
  }

  .adv-card {
    flex: 0 0 calc(50% - 12px);
  }
}

@media (max-width: 640px) {
  .adv-card {
    flex: 0 0 100%;
  }
}