.feature-slider {
  padding: 30px 0;
  background: #fafafa;
  position: relative;
}
.feature-slider .swiper-container {
  width: 100%;
  overflow: hidden;
  position: static; /* 讓箭頭相對於 feature-slider 定位 */
  padding: 0 50px; /* 給箭頭留空間 */
}

/* 導航箭頭樣式 */
.swiper-button-next_img,
.swiper-button-prev_img {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 88px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
  opacity: 0.9;
}

.swiper-button-next_img:hover,
.swiper-button-prev_img:hover {
  background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
  opacity: 1;
  transform: translateY(-50%) scale(1.05);
}

.swiper-button-next_img:active,
.swiper-button-prev_img:active {
  transform: translateY(-50%) scale(0.95);
}

.swiper-button-next_img {
  right: 0;
  border-radius: 8px 0 0 8px;
}

.swiper-button-prev_img {
  left: 0;
  border-radius: 0 8px 8px 0;
}

.swiper-button-next_img::after,
.swiper-button-prev_img::after {
  font-size: 28px;
  color: #fff;
  font-weight: 300;
  font-family: Arial, sans-serif;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.swiper-button-next_img::after {
  content: '›';
}

.swiper-button-prev_img::after {
  content: '‹';
}

/* 禁用狀態（到達邊界時） */
.swiper-button-next_img.swiper-button-disabled,
.swiper-button-prev_img.swiper-button-disabled {
  opacity: 0.3;
  cursor: not-allowed;
  box-shadow: none;
}

.swiper-button-next_img.swiper-button-disabled:hover,
.swiper-button-prev_img.swiper-button-disabled:hover {
  transform: translateY(-50%);
  box-shadow: none;
}

/* 靜態網格模式（4張以內） */
.feature-static-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
}

@media (max-width: 1024px) {
  .feature-static-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .feature-static-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .feature-static-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background: #fff;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  overflow: hidden;
  text-align: center;
}
.feature-card img {
  width: 100%;
  height: 300px;        /* ✅ 固定高度 */
  object-fit: cover;    /* ✅ 裁切多餘區域、填滿容器 */
  display: block;
}
.feature-card h3 {
  font-size: 1rem;
  padding: 10px;
  color: #333;
}

/* 手機版響應式調整 */
@media (max-width: 768px) {
  .feature-slider .swiper-container {
    padding: 0 10px; /* 減少左右間距 */
  }
  .feature-card img {
    height: 180px; /* 手機版降低高度 */
  }
  .feature-card h3 {
    font-size: 0.85rem;
    padding: 8px;
  }
  .swiper-button-next_img,
  .swiper-button-prev_img {
    width: 32px;
    height: 60px;
  }
  .swiper-button-next_img::after,
  .swiper-button-prev_img::after {
    font-size: 20px;
  }
}

@media (max-width: 480px) {
  .feature-slider .swiper-container {
    padding: 0 5px;
  }
  .feature-card img {
    height: 150px; /* 小手機版更低高度 */
  }
  .feature-card h3 {
    font-size: 0.8rem;
    padding: 6px;
  }
}