:root {
  --beilaide-text-color-black: #333;
  --beilaide-text-color-gray: #666;
  --beilaide-bg-dark: #333;
}

.beilaide-why-choose-us-section {
  padding: var(--component-gap) 0;
  background: #fff;
  font-family: var(--font-family);
}

.beilaide-why-choose-us-title {
  font-family: var(--title-font-family, 'Poppins', sans-serif);
  font-size: var(--font-64);
  font-weight: 700;
  color: var(--beilaide-text-color-black);
  text-align: center;
  text-transform: uppercase;
  margin-bottom: 60px;
  line-height: 1.4;
}

.beilaide-why-choose-us-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, auto);
  gap: 50px;
}

/* 第一个元素：占1列 */
.beilaide-why-choose-us-item:nth-child(1) {
  grid-column: 1;
  grid-row: 1;
}

/* 第二个元素：占2列 */
.beilaide-why-choose-us-item:nth-child(2) {
  grid-column: 2 / 4;
  grid-row: 1;
  padding: 0px;
  overflow: hidden;
}

.beilaide-why-choose-us-item:nth-child(2) > img {
  object-fit: cover;
  height: 100%;
  width: 100%;
}

/* 第三个元素：占1列 */
.beilaide-why-choose-us-item:nth-child(3) {
  grid-column: 1;
  grid-row: 2;
}

/* 第四个元素：占1列 */
.beilaide-why-choose-us-item:nth-child(4) {
  grid-column: 2;
  grid-row: 2;
}

/* 第五个元素：占1列 */
.beilaide-why-choose-us-item:nth-child(5) {
  grid-column: 3;
  grid-row: 2;
}

.beilaide-why-choose-us-item {
  background: var(--beilaide-bg-dark);
  border-radius: 16px;
  padding: 40px 45px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
  min-height: 471px;
}

.beilaide-why-choose-us-item:hover {
  /* transform: translateY(-5px); */
  background-color: var(--color-primary);
}

.beilaide-why-item-icon {
  width: 74px;
  height: 74px;
  margin-bottom: 24px;
  flex-shrink: 0;
  position: relative;
}

.beilaide-why-item-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 0.3s ease;
}

.beilaide-why-icon-hover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.beilaide-why-choose-us-item:hover .beilaide-why-icon-default {
  opacity: 0;
}

.beilaide-why-choose-us-item:hover .beilaide-why-icon-hover {
  opacity: 1;
}

.beilaide-why-item-title {
  font-family: var(--title-font-family, 'Poppins', sans-serif);
  font-size: var(--font-24);
  font-weight: 700;
  color: #fff;
  margin: 0 0 24px 0;
  line-height: 1.4;
  text-transform: uppercase;
}

.beilaide-why-item-content {
  font-family: var(--font-family, 'Poppins', sans-serif);
  font-size: var(--font-16);
  color: #fff;
  font-weight: 400;
  line-height: 1.6;
  flex: 1;
}

.beilaide-why-item-content p {
  margin: 0 0 12px 0;
}

.beilaide-why-item-content p:last-child {
  margin-bottom: 0;
}

/* 中等大屏幕 1440px */
@media (max-width: 1440px) {
  .beilaide-why-choose-us-title {
    font-size: calc(var(--font-64) - 4px);
    margin-bottom: 50px;
  }

  .beilaide-why-choose-us-grid {
    gap: 24px;
  }

  .beilaide-why-choose-us-item {
    padding: 35px 30px;
    min-height: 300px;
  }
}

/* 标准屏幕 1280px */
@media (max-width: 1280px) {
  .beilaide-why-choose-us-title {
    font-size: calc(var(--font-64) - 8px);
    margin-bottom: 45px;
  }

  .beilaide-why-choose-us-grid {
    gap: 20px;
  }

  .beilaide-why-choose-us-item {
    padding: 32px 28px;
    min-height: 300px;
  }

  .beilaide-why-item-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
  }

  .beilaide-why-item-title {
    font-size: calc(var(--font-24) - 2px);
    margin-bottom: 14px;
  }

  .beilaide-why-item-content {
    font-size: calc(var(--font-16) - 1px);
  }
}

/* 小屏幕 1024px */
@media (max-width: 1024px) {
  .beilaide-why-choose-us-title {
    font-size: calc(var(--font-64) - 12px);
    margin-bottom: 40px;
  }

  .beilaide-why-choose-us-grid {
    gap: 18px;
  }

  .beilaide-why-choose-us-item {
    padding: 30px 24px;
  }

  .beilaide-why-item-icon {
    width: 52px;
    height: 52px;
    margin-bottom: 18px;
  }

  .beilaide-why-item-title {
    font-size: var(--font-20);
    margin-bottom: 12px;
  }

  .beilaide-why-item-content {
    font-size: var(--font-16);
  }
}

/* 平板横屏 992px */
@media (max-width: 992px) {
  .beilaide-why-choose-us-title {
    font-size: var(--font-46);
    margin-bottom: 35px;
  }

  .beilaide-why-choose-us-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: auto;
    gap: 20px;
  }

  /* 重新定义布局：移动端改为2列 */
  .beilaide-why-choose-us-item:nth-child(1) {
    grid-column: 1;
    grid-row: 2;
  }

  .beilaide-why-choose-us-item:nth-child(2) {
    grid-column: 1 / 3;
    grid-row: 1;
  }

  .beilaide-why-choose-us-item:nth-child(3) {
    grid-column: 2;
    grid-row: 2;
  }

  .beilaide-why-choose-us-item:nth-child(4) {
    grid-column: 1;
    grid-row: 3;
  }

  .beilaide-why-choose-us-item:nth-child(5) {
    grid-column: 2;
    grid-row: 3;
  }

  .beilaide-why-choose-us-item {
    padding: 28px 22px;
    min-height: 280px;
  }
}

/* 平板竖屏 768px */
@media (max-width: 768px) {
  .beilaide-why-choose-us-title {
    font-size: var(--font-36);
    margin-bottom: 30px;
  }

  .beilaide-why-choose-us-grid {
    gap: 16px;
  }

  .beilaide-why-choose-us-item {
    padding: 24px 20px;
    min-height: 240px;
  }

  .beilaide-why-item-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
  }

  .beilaide-why-item-title {
    font-size: var(--font-18);
    margin-bottom: 10px;
  }

  .beilaide-why-item-content {
    font-size: var(--font-14);
  }
}

/* 手机 576px */
@media (max-width: 576px) {
  .beilaide-why-choose-us-title {
    font-size: var(--font-30);
    margin-bottom: 24px;
  }

  .beilaide-why-choose-us-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 移动端单列布局 */
  .beilaide-why-choose-us-item:nth-child(1),
  .beilaide-why-choose-us-item:nth-child(2),
  .beilaide-why-choose-us-item:nth-child(3),
  .beilaide-why-choose-us-item:nth-child(4),
  .beilaide-why-choose-us-item:nth-child(5) {
    grid-column: 1;
    grid-row: auto;
  }

  .beilaide-why-choose-us-item:nth-child(2) {
    order: -1;
  }

  .beilaide-why-choose-us-item {
    padding: 22px 18px;
    min-height: auto;
  }

  .beilaide-why-item-icon {
    width: 44px;
    height: 44px;
    margin-bottom: 14px;
  }

  .beilaide-why-item-title {
    font-size: var(--font-16);
    margin-bottom: 10px;
  }

  .beilaide-why-item-content {
    font-size: var(--font-14);
  }
}

/* 小手机 375px */
@media (max-width: 375px) {
  .beilaide-why-choose-us-title {
    font-size: var(--font-24);
    margin-bottom: 20px;
  }

  .beilaide-why-choose-us-grid {
    gap: 14px;
  }

  .beilaide-why-choose-us-item {
    padding: 20px 16px;
  }

  .beilaide-why-item-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 12px;
  }

  .beilaide-why-item-title {
    font-size: var(--font-14);
    margin-bottom: 8px;
  }

  .beilaide-why-item-content {
    font-size: var(--font-13);
  }
}