/* Banner 基础 */
.banner-about {
  width: 100%;
  aspect-ratio: 2 / 1;          /* ✅ 强制 2:1 比例 */
  min-height: 50vh;            /* ✅ 下限：手机上别太矮 */
  max-height: 900px;           /* ✅ 上限：桌面别太高 */
  overflow: hidden;
  position: relative;
}

/* 桌面：更高但保持比例 */
@media (min-width: 1200px) {
  .banner-about {
    min-height: 60vh;
  }
}

/* 平板 */
@media (max-width: 991.98px) {
  .banner-about {
    min-height: 45vh;
  }
}

/* 手机端 */
@media (max-width: 767.98px) {
  .banner-about {
    aspect-ratio: 2 / 1;       /* ✅ 手机也保持 2:1 */
    min-height: 200px;         /* ✅ 最小高度兜底 */
    max-height: 320px;
  }
}

/* 超小屏 */
@media (max-width: 480px) {
  .banner-about {
    min-height: 180px;
    max-height: 280px;
  }
}

/*<!-- ========================= -->*/
/*<!-- 服务承诺 -->*/
/*<!-- ========================= -->*/
/* 悬停上浮 */
.hover-lift {
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 28px rgba(0,0,0,.08);
}

/* 图标圆 */
.icon-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 文字 */
.card p {
  font-size: 0.875rem;
  line-height: 1.7;
}


/* =========================
   服务承诺卡片 - 基础
   ========================= */
.service-card {
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    background-color 0.25s ease,
    color 0.25s ease;
  will-change: transform;
}

/* =========================
   桌面端：hover 上浮
   ========================= */
@media (hover: hover) and (pointer: fine) {
  .service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.1);
  }
}

/* =========================
   移动端：active 触摸反馈
   ========================= */
@media (hover: none) and (pointer: coarse) {
  .service-card:active {
    transform: scale(0.98);
    background-color: #fff8e1; /* 浅金黄背景 */
    box-shadow: 0 6px 18px rgba(212, 175, 55, 0.25);
  }

  .service-card:active .service-icon {
    background-color: #d4af37; /* 金色图标 */
    color: #fff;
  }

  .service-card:active .service-title {
    color: #b8860b; /* 深金色标题 */
  }
}

/* =========================
   图标容器
   ========================= */
.service-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: #e8f5e9;
  color: #2e7d32;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  transition: all 0.25s ease;
}

/* =========================
   标题
   ========================= */
.service-title {
  transition: color 0.25s ease;
}