/* 产品介绍 */
.products-section {
  /* background-color: white; */
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.product-tabs {
  max-width: 1500px;
  margin: 0 auto;
}

.tab-buttons {
  display: flex;
  justify-content: center;
  margin-bottom: 30px;
  gap: 10px;
}

.tab-btn {
  padding: 12px 25px;
  background: none;
  border: none;
  border-radius: 30px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.tab-btn.active {
  background: linear-gradient(
    45deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.feature-item {
  text-align: center;
  padding: 25px;
}

.feature-item i {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.feature-item h4 {
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.battery-features ul {
  list-style: none;
  padding-left: 0;
}

.battery-features li {
  padding: 10px 0;
  border-bottom: 1px solid #eee;
  display: flex;
  align-items: center;
}

.battery-features li::before {
  content: "•";
  color: var(--primary-color);
  font-size: 1.5rem;
  margin-right: 10px;
}

.tbox-features .feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.list-item {
  display: flex;
  align-items: center;
  gap: 15px;
}

.list-item .number {
  width: 30px;
  height: 30px;
  background: linear-gradient(
    45deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}