/* =========================================
   科技简约蓝白主题样式（首页友好，尽量不影响功能）
   引用顺序：custom.css 之后，覆盖微调
   主色：--primary #2563eb；辅色：--primary-600/#1d4ed8
   ========================================= */

/* ------- 全局变量与基础 ------- */
:root {
  --primary: #2563eb;
  --primary-600: #1d4ed8;
  --primary-700: #1e40af;
  --primary-100: #e0edff;
  --primary-50: #f5f9ff;

  --text-900: #111827;
  --text-700: #374151;
  --text-500: #6b7280;

  --border-200: #e5e7eb;
  --shadow-1: 0 6px 18px rgba(37, 99, 235, 0.12);
  --shadow-soft: 0 8px 24px rgba(17, 24, 39, 0.06);
}

/* 抗锯齿与全局文字色 */
html, body {
  color: var(--text-700);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: #ffffff;
}

/* 浅蓝背景替代偏灰背景，科技感更强 */
.bg-light {
  background: var(--primary-50) !important;
}

/* 链接默认与悬浮 */
a {
  color: var(--text-700);
  transition: all .25s ease;
  text-decoration: none;
}
a:hover {
  color: var(--primary);
  text-decoration: none;
}

/* ------- Swiper 幻灯片 ------- */
.swiper-container {
  background: #ffffff;
}

/* 幻灯片标题可读性增强：加底部渐变遮罩 */
.swiper-slide {
  position: relative;
  overflow: hidden;
}
.swiper-slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(2,6,23,0) 40%, rgba(2,6,23,0.35) 75%, rgba(2,6,23,0.55) 100%);
  pointer-events: none;
}

/* 轮播图高度响应优化（覆盖 custom.css 中的固定高度） */
.slideshow {
  height: 420px;
  object-fit: cover;
}
@media (max-width: 991.98px) {
  .slideshow { height: 340px; }
}
@media (max-width: 575.98px) {
  .slideshow { height: 240px; }
}

/* 分页小圆点：蓝色主副色 */
.swiper-pagination-bullet {
  background: #cfe0ff;
  opacity: 1;
  width: 8px;
  height: 8px;
  transition: all .25s ease;
}
.swiper-pagination-bullet-active {
  background: var(--primary);
  width: 18px;
  border-radius: 8px;
}

/* 前后按钮：毛玻璃圆形按钮，悬浮上浮 */
.swiper-button-next,
.swiper-button-prev {
  color: #fff;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  background: rgba(37, 99, 235, .85);
  backdrop-filter: saturate(140%) blur(6px);
  box-shadow: var(--shadow-1);
  transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.swiper-button-next::after,
.swiper-button-prev::after {
  font-size: 18px;
}
.swiper-button-next:hover,
.swiper-button-prev:hover {
  transform: translateY(-2px);
  background: var(--primary-600);
  box-shadow: 0 10px 26px rgba(37, 99, 235, 0.22);
}

/* 幻灯片标题文字略微发光，提升对比 */
.swiper-slide .text-light h1,
.swiper-slide .text-light h4 {
  text-shadow: 0 6px 24px rgba(0,0,0,.25);
}

/* ------- 区块标题与副标题 ------- */
/* 首页各区块的一级标题（使用现有类组合） */
.container .text-center.fs-26.fs-sm-28 {
  color: var(--primary) !important;
  letter-spacing: .5px;
  position: relative;
  display: inline-block;
  font-weight: 600;
}

/* 标题下方细线装饰 */
.container .text-center.fs-26.fs-sm-28::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -12px;
  transform: translateX(-50%);
  width: 56px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-600), var(--primary));
  border-radius: 2px;
}

/* 副标题更柔和 */
.container .text-center.fs-14.fs-sm-16.text-secondary {
  color: var(--text-500) !important;
  opacity: .95;
}

/* “查看更多”链接美化：细微箭头与下划线动画 */
.text-center h4 a.text-secondary {
  color: var(--primary) !important;
  position: relative;
  padding-right: 18px;
}
.text-center h4 a.text-secondary::after {
  content: "→";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-52%);
  color: var(--primary);
  transition: transform .25s ease, color .25s ease;
}
.text-center h4 a.text-secondary:hover::after {
  transform: translateY(-52%) translateX(3px);
  color: var(--primary-600);
}

/* 关于我们正文块：更舒适的行高与留白 */
.row.text-secondary.lh-2 {
  background: #fff;
  border: 1px solid var(--border-200);
  border-radius: 10px;
  padding: 14px 16px;
  line-height: 1.9;
  box-shadow: var(--shadow-soft);
}

/* ------- 新闻列表 ------- */
.media .media-body h5 a {
  color: var(--text-900);
  font-weight: 600;
}
.media .media-body h5 a:hover {
  color: var(--primary);
}
.media .media-body p a {
  color: var(--text-500);
}
.media .media-body p a:hover {
  color: var(--primary);
}

/* 列表块的卡片感 */
.col-12.col-lg-6 .media {
  padding: 14px 4px;
  border-bottom: 1px dashed #e8eefc;
}

/* ------- 产品卡片 ------- */
.card {
  border: none;
  border-radius: 14px;
  box-shadow: var(--shadow-soft);
  transition: transform .2s ease, box-shadow .2s ease;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 36px rgba(17, 24, 39, 0.12);
}

/* 图片容器高度与裁切动画 */
.card-img-150 {
  height: 180px;
  overflow: hidden;
  border-top-left-radius: 14px;
  border-top-right-radius: 14px;
}
.card-img-150 img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.card:hover .card-img-150 img {
  transform: scale(1.06);
}

/* 标题与文字 */
.card .card-title a {
  color: var(--text-900);
  font-weight: 600;
}
.card .card-title a:hover {
  color: var(--primary);
}
.card .card-text {
  color: var(--text-500);
}

/* 徽章统一蓝色系风格 */
.badge-danger,
.badge-warning,
.badge-info {
  color: #fff;
  font-weight: 600;
  letter-spacing: .2px;
  padding: .35rem .55rem;
  border-radius: .4rem;
}
.badge-danger { background: #ef4444; }   /* 保留红色用于重要置顶 */
.badge-warning { background: var(--primary-600); } /* 推荐 -> 蓝色 */
.badge-info { background: var(--primary); }        /* 头条 -> 蓝色 */

/* ------- 通用按钮/链接可触达反馈 ------- */
button, .btn, .nav-link, a {
  outline: none !important;
}
button:focus, .btn:focus, .nav-link:focus, a:focus {
  box-shadow: 0 0 0 3px rgba(37,99,235,.15) !important;
}

/* ------- Bootstrap文字色微调以趋近蓝白统一 ------- */
/* 将 info / success / warning 的标题色统一偏蓝，避免黄绿跳色 */
.text-info, .text-success, .text-warning {
  color: var(--primary) !important;
}

/* ------- 间距统一 ------- */
.py-5 {
  padding-top: 3.2rem !important;
  padding-bottom: 3.2rem !important;
}

/* ------- 小屏优化 ------- */
@media (max-width: 991.98px) {
  .swiper-button-next,
  .swiper-button-prev {
    width: 38px;
    height: 38px;
  }
  .card-img-150 { height: 160px; }
}
@media (max-width: 575.98px) {
  .container .text-center.fs-26.fs-sm-28::after {
    width: 44px;
  }
  .card-img-150 { height: 150px; }
}