/* ===== 企业官网样式 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif; color: #333; background: #f7f8fa; line-height: 1.7; }

/* 顶栏导航 */
.navbar { background: #fff; box-shadow: 0 2px 12px rgba(0,0,0,.06); position: sticky; top: 0; z-index: 1000; }
.navbar .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; display: flex; align-items: center; height: 64px; }
.navbar .logo { display: flex; align-items: center; cursor: pointer; text-decoration: none; }
.navbar .logo .logo-img { height: 40px; width: auto; display: block; }
.navbar .nav-links { display: flex; gap: 4px; margin-left: 40px; flex: 1; }
.navbar .nav-links a, .navbar .nav-links .nav-item { padding: 8px 16px; color: #555; text-decoration: none; border-radius: 6px; font-size: 15px; transition: all .2s; cursor: pointer; white-space: nowrap; position: relative; }
.navbar .nav-links a:hover, .navbar .nav-links a.active, .navbar .nav-links .nav-item:hover { color: #1d4ed8; background: #eff6ff; }
.navbar .nav-links .nav-item { display: inline-block; }
.navbar .nav-links .submenu { display: none; position: absolute; top: 100%; left: 0; background: #fff; box-shadow: 0 4px 16px rgba(0,0,0,.1); border-radius: 8px; min-width: 140px; padding: 4px 0; z-index: 100; }
.navbar .nav-links .nav-item:hover .submenu { display: block; }
.navbar .nav-links .submenu a { display: block; padding: 8px 20px; color: #555; font-size: 14px; border-radius: 0; }
.navbar .menu-trigger { display: none; font-size: 24px; cursor: pointer; padding: 8px; }
@media (max-width: 768px) {
  .navbar .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 8px 0; box-shadow: 0 4px 12px rgba(0,0,0,.1); margin-left: 0; }
  .navbar .nav-links.open { display: flex; }
  .navbar .submenu { position: static; box-shadow: none; padding-left: 16px; }
  .navbar .menu-trigger { display: block; }
}

/* 通用容器 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-title { text-align: center; font-size: 32px; font-weight: 700; margin-bottom: 16px; color: #1a1a2e; }
.section-subtitle { text-align: center; font-size: 16px; color: #888; margin-bottom: 48px; }

/* 首页 Hero */
.hero { background: linear-gradient(135deg, #1d4ed8 0%, #7c3aed 100%); color: #fff; padding: 100px 0 120px; text-align: center; }
.hero h1 { font-size: 42px; font-weight: 800; margin-bottom: 20px; }
.hero p { font-size: 20px; opacity: .85; max-width: 600px; margin: 0 auto 32px; }
.hero .hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero .hero-btns a { padding: 14px 36px; border-radius: 50px; font-size: 16px; text-decoration: none; font-weight: 600; transition: all .3s; }
.hero .hero-btns .btn-primary { background: #fff; color: #1d4ed8; }
.hero .hero-btns .btn-outline { border: 2px solid rgba(255,255,255,.5); color: #fff; }
.hero .hero-btns .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.2); }
.hero .hero-btns .btn-outline:hover { background: rgba(255,255,255,.1); }

/* 轮播图（不显示标题描述，只显示图片） */
.banner-wrapper { position: relative; width: 100%; aspect-ratio: 1919 / 729; overflow: hidden; background: #1a1a2e; }
.banner-wrapper-clean { background: #000; }
.banner-slider { display: flex; transition: transform 0.6s ease-in-out; height: 100%; }
.banner-slide { flex: 0 0 100%; min-width: 100%; position: relative; height: 100%; display: flex; align-items: center; justify-content: center; }
.banner-slide img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; }
/* 兼容老样式（若有用到仍能渲染） */
.banner-slide::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(29,78,216,.75) 0%, rgba(124,58,237,.65) 100%); }
/* 清洁模式：去掉渐变遮罩，纯图（必须在 .banner-slide::after 之后以覆盖） */
.banner-slide-clean::after { content: none; }
.banner-text { position: relative; z-index: 2; text-align: center; color: #fff; padding: 0 40px; }
.banner-text h1 { font-size: 48px; font-weight: 800; margin-bottom: 20px; text-shadow: 0 2px 12px rgba(0,0,0,.3); }
.banner-text p { font-size: 20px; opacity: .9; max-width: 640px; margin: 0 auto; }
.banner-dots { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 3; }
.banner-dots span { width: 12px; height: 12px; border-radius: 50%; background: rgba(255,255,255,.4); cursor: pointer; transition: all .3s; box-shadow: 0 0 0 1px rgba(0,0,0,.2); }
.banner-dots span.active { background: #fff; transform: scale(1.2); }
.banner-prev, .banner-next { position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; background: rgba(0,0,0,.4); color: #fff; border: none; width: 48px; height: 48px; border-radius: 50%; font-size: 20px; cursor: pointer; transition: all .3s; display: flex; align-items: center; justify-content: center; }
.banner-prev { left: 24px; }
.banner-next { right: 24px; }
.banner-prev:hover, .banner-next:hover { background: rgba(0,0,0,.65); }
@media (max-width: 768px) {
  .banner-text h1 { font-size: 28px; }
  .banner-text p { font-size: 14px; }
  .banner-prev, .banner-next { width: 36px; height: 36px; font-size: 16px; }
}

/* 特色卡片 */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 28px; }
.feature-card { background: #fff; padding: 40px 32px; border-radius: 12px; text-align: center; box-shadow: 0 2px 12px rgba(0,0,0,.05); transition: all .3s; }
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 8px 28px rgba(0,0,0,.1); }
.feature-card .icon { font-size: 40px; margin-bottom: 16px; }
.feature-card h3 { font-size: 20px; margin-bottom: 12px; color: #1a1a2e; }
.feature-card p { color: #777; font-size: 14px; }

/* 产品卡片 */
.products { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.product-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,.05); transition: all .3s; cursor: pointer; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 8px 28px rgba(0,0,0,.1); }
.product-card img { width: 100%; height: 200px; object-fit: cover; }
.product-card .info { padding: 20px; }
.product-card h3 { font-size: 18px; margin-bottom: 8px; color: #1a1a2e; }
.product-card p { color: #888; font-size: 14px; }

/* 产品列表页 */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 28px; padding: 0 20px; }
.product-grid .product-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,.06); transition: all .3s; cursor: pointer; }
.product-grid .product-card:hover { transform: translateY(-5px); box-shadow: 0 12px 32px rgba(0,0,0,.1); }
.product-grid .product-thumb { width: 100%; height: 220px; background: #f4f6fb; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.product-grid .product-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.product-grid .product-info { padding: 22px; }
.product-grid .product-info h3 { font-size: 18px; color: #1a1a2e; margin-bottom: 10px; }
.product-grid .product-info p { font-size: 14px; color: #777; line-height: 1.6; margin-bottom: 14px; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.product-grid .product-info .more { font-size: 14px; color: #1d4ed8; font-weight: 500; }
.empty-text { text-align: center; padding: 80px 20px; color: #999; font-size: 15px; background: #fff; border-radius: 12px; }

/* 产品详情页 */
.product-detail { background: #fff; border-radius: 14px; padding: 32px; box-shadow: 0 2px 16px rgba(0,0,0,.05); }
.product-detail-top { display: grid; grid-template-columns: 480px 1fr; gap: 40px; align-items: start; margin-bottom: 40px; }
.product-detail-img { border-radius: 12px; overflow: hidden; background: #f4f6fb; min-height: 360px; display: flex; align-items: center; justify-content: center; }
.product-detail-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.product-detail-meta { padding-top: 12px; }
.product-detail-meta h1 { font-size: 30px; color: #1a1a2e; margin-bottom: 16px; }
.product-detail-meta .summary { font-size: 15px; line-height: 1.8; color: #666; margin-bottom: 28px; }
.product-detail-body { border-top: 1px solid #f0f0f0; padding-top: 32px; }
.product-detail-body h3 { font-size: 20px; color: #1a1a2e; margin-bottom: 20px; padding-left: 12px; border-left: 4px solid #1d4ed8; }
.product-content { font-size: 16px; line-height: 1.9; color: #444; }
.product-content img { max-width: 100%; border-radius: 8px; margin: 20px 0; }

@media (max-width: 1024px) {
  .product-detail-top { grid-template-columns: 1fr; }
  .product-detail-img { min-height: 280px; }
}
@media (max-width: 600px) {
  .product-detail { padding: 20px; }
  .product-detail-meta h1 { font-size: 22px; }
}

/* 新闻列表 */
.news-list { display: flex; flex-direction: column; gap: 16px; max-width: 900px; margin: 0 auto; }
.news-item { display: flex; gap: 20px; background: #fff; padding: 24px; border-radius: 10px; box-shadow: 0 1px 8px rgba(0,0,0,.04); cursor: pointer; transition: all .2s; align-items: center; }
.news-item:hover { box-shadow: 0 4px 16px rgba(0,0,0,.08); }
.news-item img { width: 160px; height: 100px; border-radius: 8px; object-fit: cover; flex-shrink: 0; }
.news-item .news-info { flex: 1; min-width: 0; }
.news-item h3 { font-size: 18px; margin-bottom: 8px; color: #1a1a2e; }
.news-item .meta { font-size: 13px; color: #aaa; margin-bottom: 8px; }
.news-item .summary { font-size: 14px; color: #777; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
@media (max-width: 600px) {
  .news-item { flex-direction: column; }
  .news-item img { width: 100%; height: 160px; }
}

/* 栏目文章页 */
.category-page { background: #f8f9fb; min-height: 60vh; }
.page-header { background: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 100%); color: #fff; padding: 48px 0 56px; }
.page-header .breadcrumb { padding: 0 0 12px; color: rgba(255,255,255,.75); }
.page-header .breadcrumb a { color: #fff; }
.page-header h2 { font-size: 34px; font-weight: 700; margin: 0 0 8px; }
.page-header p { margin: 0; color: rgba(255,255,255,.85); font-size: 15px; }
.page-body { padding-top: 32px; padding-bottom: 80px; }

.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.category-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 2px 10px rgba(0,0,0,.05); cursor: pointer; transition: all .25s; display: flex; flex-direction: column; }
.category-card:hover { transform: translateY(-6px); box-shadow: 0 12px 28px rgba(0,0,0,.1); }
.category-card .card-image { height: 180px; background: #eef2ff; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.category-card .card-image img { width: 100%; height: 100%; object-fit: cover; }
.category-card .no-image { color: #9ab4ff; }
.category-card .card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.category-card h3 { font-size: 17px; color: #1a1a2e; margin: 0 0 10px; line-height: 1.5; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.category-card .meta { font-size: 13px; color: #999; margin-bottom: 10px; }
.category-card .summary { font-size: 14px; color: #666; line-height: 1.7; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; flex: 1; }
.category-card .read-more { margin-top: 14px; font-size: 14px; color: #1d4ed8; font-weight: 500; }
.empty-box { background: #fff; border-radius: 12px; padding: 64px 0; box-shadow: 0 2px 10px rgba(0,0,0,.05); }

@media (max-width: 1024px) {
  .category-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .page-header { padding: 36px 0 40px; }
  .page-header h2 { font-size: 26px; }
  .category-grid { grid-template-columns: 1fr; }
  .category-card .card-image { height: 200px; }
}

/* 文章详情 */
.article-detail { background: #fff; border-radius: 12px; padding: 48px; max-width: 900px; margin: 0 auto; box-shadow: 0 2px 12px rgba(0,0,0,.04); }
.article-detail h1 { font-size: 30px; color: #1a1a2e; margin-bottom: 16px; }
.article-detail .meta { color: #aaa; font-size: 14px; margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid #f0f0f0; }
.article-detail .content { font-size: 16px; line-height: 1.9; color: #444; }
.article-detail .content img { max-width: 100%; border-radius: 8px; margin: 20px 0; }
@media (max-width: 600px) { .article-detail { padding: 24px; } }

/* 联系表单 */
.contact-wrapper { max-width: 600px; margin: 0 auto; background: #fff; padding: 48px; border-radius: 12px; box-shadow: 0 2px 12px rgba(0,0,0,.04); }
.contact-wrapper .el-form-item { margin-bottom: 20px; }

/* 面包屑 */
.breadcrumb { padding: 20px 0; font-size: 14px; color: #999; }
.breadcrumb a { color: #1d4ed8; text-decoration: none; }
.breadcrumb span { margin: 0 6px; }

/* 页脚 */
.footer { background: #1a1a2e; color: #aaa; padding: 48px 0 32px; text-align: center; font-size: 14px; }
.footer .container { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; text-align: left; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer a { color: #888; text-decoration: none; display: block; padding: 4px 0; font-size: 14px; }
.footer a:hover { color: #1d4ed8; }
.footer .copy { text-align: center; padding-top: 32px; margin-top: 32px; border-top: 1px solid rgba(255,255,255,.08); }
@media (max-width: 600px) { .footer .container { grid-template-columns: 1fr; } }

/* 分页 */
.pagination-bar { display: flex; justify-content: center; margin-top: 32px; }

/* 关于页面 */
.about-content { max-width: 800px; margin: 0 auto; background: #fff; padding: 48px; border-radius: 12px; font-size: 16px; line-height: 2; color: #555; }
.about-content img { max-width: 100%; border-radius: 8px; margin: 20px 0; }

/* 上级菜单标记 */
.navbar .nav-links .nav-item span.is-parent::after { content: ' \25BE'; font-size: 10px; opacity: 0.5; }

/* 移动端子菜单点击展开 */
@media (max-width: 768px) {
  .navbar .nav-links .submenu { display: none; }
  .navbar .nav-links .submenu.submenu-open { display: block; }
}

/* ===== 首页模块化布局 ===== */
.section-business { background: #fff; }
.section-intro { background: #f7f8fa; }
.section-news { background: #fff; }
.section-about { background: #f7f8fa; }

/* 公司简介 */
.intro-card {
  background: linear-gradient(135deg, #dbeafe 0%, #e0f2fe 100%);
  border-radius: 14px;
  padding: 40px 36px;
  box-shadow: 0 6px 24px rgba(29,78,216,.08);
}
.intro-grid {
  display: grid;
  grid-template-columns: 200px 1fr 320px;
  gap: 32px;
  align-items: stretch;
}
.intro-grid.no-image { grid-template-columns: 200px 1fr; }
.intro-tabs {
  display: flex;
  flex-direction: column;
  gap: 18px;
  justify-content: center;
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 1s ease, transform 1s ease;
}
.intro-visible .intro-tabs { opacity: 1; transform: translateX(0); }
.intro-tab {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  color: #fff;
  border: none;
  padding: 14px 24px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(251,191,36,.35);
  transition: all .3s;
  width: 100%;
}
.intro-tab:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(251,191,36,.45); }
.intro-text { opacity: 0; transform: translateX(-60px); transition: opacity 1.2s ease .15s, transform 1.2s ease .15s; }
.intro-visible .intro-text { opacity: 1; transform: translateX(0); }
.intro-text p { font-size: 15px; line-height: 1.9; color: #444; margin-bottom: 14px; }
.intro-text p:last-of-type { margin-bottom: 0; }
.intro-image {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 1.2s ease .3s, transform 1.2s ease .3s;
}
.intro-visible .intro-image { opacity: 1; transform: translateX(0); }
.intro-image img { width: 100%; height: 100%; max-height: 240px; border-radius: 10px; box-shadow: 0 8px 24px rgba(0,0,0,.1); object-fit: cover; }
.intro-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid rgba(29,78,216,.12);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .9s ease .7s, transform .9s ease .7s;
}
.intro-visible .intro-stats { opacity: 1; transform: translateY(0); }
.intro-stat {
  text-align: center;
  padding: 0 16px;
  border-right: 1px solid rgba(29,78,216,.12);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.intro-stat:last-child { border-right: none; }
.intro-stat strong { color: #1d4ed8; font-size: 32px; line-height: 1; font-weight: 700; }
.intro-stat strong span { display: inline-block; }
.intro-stat strong small { font-size: 16px; margin-left: 2px; font-weight: 600; }
.intro-stat > span { color: #5b6478; font-size: 13px; }
@media (max-width: 992px) {
  .intro-grid { grid-template-columns: 1fr; }
  .intro-grid.no-image { grid-template-columns: 1fr; }
  .intro-tabs { flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .intro-tab { width: auto; min-width: 120px; }
  .intro-stats { grid-template-columns: repeat(2, 1fr); gap: 24px 0; }
  .intro-stat:nth-child(2) { border-right: none; }
}
@media (max-width: 600px) {
  .intro-card { padding: 24px 18px; }
  .intro-stats { grid-template-columns: 1fr; }
  .intro-stat { border-right: none; border-bottom: 1px solid rgba(29,78,216,.12); padding-bottom: 20px; }
  .intro-stat:last-child { border-bottom: none; padding-bottom: 0; }
}
.link-more {
  display: inline-block;
  margin-top: 18px;
  color: #1d4ed8;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: all .2s;
}
.link-more:hover { color: #7c3aed; transform: translateX(4px); }

/* 产品动态 */
.news-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 36px;
  align-items: stretch;
}
.news-layout.no-image { grid-template-columns: 1fr; }
.news-image {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(0,0,0,.06);
  min-height: 280px;
}
.news-image img { width: 100%; height: 100%; min-height: 280px; object-fit: cover; display: block; }
.news-list-wrap {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 12px;
  padding: 12px 24px;
}
.news-ul { list-style: none; padding: 0; margin: 0; }
.news-ul li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px dashed #eee;
  cursor: pointer;
  transition: color .2s;
}
.news-ul li:last-child { border-bottom: none; }
.news-ul li:hover .news-title { color: #1d4ed8; }
.news-title { font-size: 15px; color: #333; line-height: 1.5; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-right: 16px; }
.news-date { font-size: 13px; color: #999; flex-shrink: 0; }
.news-empty { padding: 60px 0; text-align: center; color: #999; font-size: 14px; }

/* 关于我们 */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}
.about-grid.no-image { grid-template-columns: 1fr; max-width: 900px; margin: 0 auto; }
.about-text p { font-size: 15px; line-height: 1.9; color: #555; margin-bottom: 14px; }
.about-text p:last-of-type { margin-bottom: 0; }
.about-image img { width: 100%; border-radius: 12px; box-shadow: 0 8px 24px rgba(0,0,0,.08); object-fit: cover; }

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 24px; }
  .news-layout { grid-template-columns: 1fr; gap: 20px; }
  .about-grid.no-image { grid-template-columns: 1fr; }
}

/* ===== 蓝色 Footer ===== */
.footer-blue {
  background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 60%, #2563eb 100%);
  color: rgba(255, 255, 255, 0.85);
  padding: 50px 0 0;
  margin-top: 40px;
}
.footer-blue-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 40px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: start;
}
.footer-blue-col { display: flex; flex-direction: column; gap: 28px; }
.footer-blue-qr-col { display: flex; flex-direction: column; gap: 24px; }
.footer-block { }
.footer-title {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 1px;
}
.footer-title .dot {
  display: inline-block;
  width: 6px;
  height: 18px;
  background: #fbbf24;
  border-radius: 2px;
}

/* 关联项目 */
.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
  font-size: 13px;
  transition: all .25s;
}
.project-link:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
  transform: translateY(-1px);
}
.project-icon { font-size: 16px; }

/* 联系我们 */
.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li {
  padding: 6px 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  border-bottom: 1px dashed rgba(255, 255, 255, 0.12);
}
.contact-list li:last-child { border-bottom: none; }
.contact-list .label { color: #fbbf24; font-weight: 500; margin-right: 4px; }
.footer-cta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 18px;
  flex-wrap: wrap;
}
/* 底部快捷入口按钮（ERP系统 / APP管理后台等，后台可配置文字/地址/颜色） */
.footer-cta-btn {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  border-radius: 999px;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
  transition: transform 0.2s, box-shadow 0.2s, filter 0.2s;
}
.footer-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
  filter: brightness(1.08);
  color: #fff;
}

/* 底部二维码（最多 5 个，自动换行） */
.footer-blue-qr {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 10px;
  align-items: flex-start;
}
.footer-qr-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 78px;
  cursor: pointer;
}
.footer-qr-img {
  position: relative;
  width: 78px;
  height: 78px;
  background: #fff;
  border-radius: 8px;
  padding: 5px;
  box-shadow: 0 4px 12px rgba(0,0,0,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}
.footer-qr-item:hover .footer-qr-img {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0,0,0,.32);
}
/* 右上角的放大镜角标，提示可点击放大 */
.footer-qr-zoom {
  position: absolute;
  right: 3px;
  bottom: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.42);
  color: #fff;
  font-size: 10px;
  line-height: 18px;
  text-align: center;
  pointer-events: none;
}
/* 二维码放大弹窗 */
.qr-zoom-body { text-align: center; }
.qr-zoom-img {
  width: 260px;
  height: 260px;
  max-width: 100%;
  object-fit: contain;
  background: #fff;
  border-radius: 10px;
  padding: 10px;
  box-shadow: 0 6px 20px rgba(0,0,0,.14);
}
.qr-zoom-desc { margin-top: 10px; color: #606266; font-size: 13px; }
.qr-zoom-tip { margin-top: 6px; color: #909399; font-size: 12px; }
.footer-qr-img img { width: 100%; height: 100%; object-fit: contain; }
.footer-qr-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
  border-radius: 4px;
  color: #6b7280;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1.3;
  text-align: center;
}
.footer-qr-name { color: #fff; font-size: 12px; font-weight: 500; letter-spacing: 0.3px; max-width: 90px; text-align: center; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.footer-blue-copy {
  text-align: center;
  padding: 18px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.65);
}
.footer-blue-copy a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  margin: 0 4px;
}
.footer-blue-copy a:hover { color: #fbbf24; text-decoration: underline; }
.footer-blue-copy .footer-icp { margin-top: 6px; }
.footer-blue-copy .sep { margin: 0 6px; color: rgba(255, 255, 255, 0.4); }

@media (max-width: 900px) {
  .footer-blue-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-blue-qr { justify-content: flex-start; }
  .footer-blue-qr-col { gap: 20px; }
}
@media (max-width: 768px) {
  .footer-blue { padding: 36px 0 0; }
  .footer-title { font-size: 16px; }
  .footer-cta-btn { font-size: 12px; padding: 6px 13px; }
}

/* ===== 合作伙伴页面（银蛛项目） ===== */
.partner-page { background: #f7f8fa; }

/* Hero */
.partner-hero {
    position: relative;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 40%, #3b82f6 100%);
    color: #fff;
    padding: 100px 0 80px;
    text-align: center;
    overflow: hidden;
}
.partner-hero-overlay {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.partner-hero-content { position: relative; z-index: 2; max-width: 800px; margin: 0 auto; padding: 0 20px; }
.partner-hero-title {
    font-size: 52px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 4px;
    text-shadow: 0 4px 20px rgba(0,0,0,.3);
}
.partner-hero-subtitle {
    font-size: 22px;
    font-weight: 300;
    letter-spacing: 8px;
    color: #fbbf24;
    margin-bottom: 24px;
}
.partner-hero-desc {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255,255,255,.75);
    margin-bottom: 0;
}
.partner-hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    color: #f7f8fa;
    z-index: 1;
}
.partner-hero-wave svg { width: 100%; height: auto; display: block; }

/* Stats */
.partner-stats {
    background: #fff;
    box-shadow: 0 2px 20px rgba(0,0,0,.05);
    position: relative;
    z-index: 3;
}
.partner-stats-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
}
.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 0 48px;
}
.stat-number {
    font-size: 36px;
    font-weight: 800;
    background: linear-gradient(135deg, #1d4ed8, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label { font-size: 13px; color: #888; letter-spacing: 2px; font-weight: 500; }
.stat-divider { width: 1px; height: 42px; background: #e5e7eb; }
@media (max-width: 768px) {
    .partner-stats-inner { flex-wrap: wrap; gap: 20px; padding: 24px 16px; }
    .stat-item { padding: 0 24px; }
    .stat-divider { display: none; }
    .stat-number { font-size: 28px; }
}

/* Section Header */
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
    display: inline-block;
    padding: 6px 20px;
    border-radius: 50px;
    background: linear-gradient(135deg, #dbeafe, #ede9fe);
    color: #4f46e5;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

/* Partner Grid */
.partner-projects { padding: 80px 0 100px; }
.partner-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.partner-card {
    position: relative;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,.06);
    cursor: pointer;
    transition: all .4s cubic-bezier(.25,.8,.25,1);
    opacity: 0;
    animation: cardFadeIn .6s ease forwards;
}
@keyframes cardFadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.partner-card:hover { transform: translateY(-8px); box-shadow: 0 16px 40px rgba(0,0,0,.12); }
.partner-card-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
}
.card-theme-1 { background: linear-gradient(90deg, #3b82f6, #6366f1); }
.card-theme-2 { background: linear-gradient(90deg, #10b981, #059669); }
.card-theme-3 { background: linear-gradient(90deg, #f59e0b, #d97706); }
.card-theme-4 { background: linear-gradient(90deg, #ef4444, #dc2626); }
.card-theme-5 { background: linear-gradient(90deg, #8b5cf6, #7c3aed); }

.partner-card-media {
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 300px;
    overflow: hidden;
    background: #f8fafc;
    border-radius: 16px 16px 0 0;
}
.partner-card-emoji {
    font-size: 72px;
    display: block;
    line-height: 1;
    transition: transform .4s;
}
.partner-card:hover .partner-card-emoji { transform: scale(1.15); }
.partner-card-logo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s;
}
.partner-card:hover .partner-card-logo { transform: scale(1.05); }
.partner-card-link { cursor: pointer; }
.partner-card-body { padding: 20px 28px 28px; }
.partner-card-name {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 12px;
    line-height: 1.4;
}
.partner-card-intro {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
    margin-bottom: 16px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}
.partner-card-tags { display: none; }
.partner-card-tag { display: none; }
.partner-card-more {
    font-size: 14px;
    color: #1d4ed8;
    font-weight: 600;
    transition: all .3s;
}
.partner-card:hover .partner-card-more { color: #7c3aed; letter-spacing: 1px; }

@media (max-width: 1024px) {
    .partner-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .partner-grid { grid-template-columns: 1fr; }
    .partner-hero { padding: 70px 0 50px; }
    .partner-hero-title { font-size: 32px; letter-spacing: 2px; }
    .partner-hero-subtitle { font-size: 16px; letter-spacing: 4px; }
    .partner-hero-desc { font-size: 14px; }
    .partner-projects { padding: 50px 0 60px; }
    .section-header { margin-bottom: 36px; }
}

/* Modal */
.partner-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.55);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn .25s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.partner-modal {
    background: #fff;
    border-radius: 16px;
    max-width: 720px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlideIn .35s cubic-bezier(.25,.8,.25,1);
    box-shadow: 0 24px 64px rgba(0,0,0,.25);
}
@keyframes modalSlideIn {
    from { opacity: 0; transform: translateY(40px) scale(.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.partner-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,.9);
    border: none;
    font-size: 20px;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #333;
    transition: all .2s;
    box-shadow: 0 2px 8px rgba(0,0,0,.15);
}
.partner-modal-close:hover { background: #fff; transform: rotate(90deg); }
.partner-modal-header {
    padding: 56px 0 40px;
    display: flex;
    justify-content: center;
    position: relative;
}
.partner-modal-header.card-theme-1 { background: linear-gradient(135deg, #eff6ff, #eef2ff); }
.partner-modal-header.card-theme-2 { background: linear-gradient(135deg, #ecfdf5, #d1fae5); }
.partner-modal-header.card-theme-3 { background: linear-gradient(135deg, #fffbeb, #fef3c7); }
.partner-modal-header.card-theme-4 { background: linear-gradient(135deg, #fef2f2, #fee2e2); }
.partner-modal-header.card-theme-5 { background: linear-gradient(135deg, #f5f3ff, #ede9fe); }
.partner-modal-emoji { font-size: 72px; display: block; }
.partner-modal-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
    border-radius: 12px;
}
.partner-modal-body { padding: 32px 40px 48px; }
.partner-modal-title { font-size: 26px; font-weight: 700; color: #1a1a2e; margin: 0 0 12px; }
.partner-modal-subtitle { font-size: 15px; color: #666; line-height: 1.8; margin: 0 0 16px; }
.partner-modal-tags { display: none; }
.partner-modal-divider { height: 1px; background: #f0f0f0; margin: 24px 0; }
.partner-modal-detail { margin-bottom: 28px; }
.partner-modal-detail h4 {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 16px;
    padding-left: 12px;
    border-left: 4px solid #1d4ed8;
}
.partner-modal-detail p { font-size: 15px; line-height: 1.9; color: #555; margin-bottom: 14px; }
.partner-modal-detail ul { padding-left: 20px; margin-bottom: 14px; }
.partner-modal-detail li { font-size: 14px; line-height: 1.8; color: #555; margin-bottom: 6px; }
.partner-modal-info { display: none; }
.info-row { display: none; }
.info-label { display: none; }
.info-value { display: none; }
.partner-modal-qr { text-align: center; }
.partner-modal-qr h4 {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a2e;
    margin: 0 0 16px;
    padding-left: 12px;
    border-left: 4px solid #1d4ed8;
    text-align: left;
}
.qr-code-wrap {
    display: inline-block;
    padding: 12px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,.08);
}
.qr-code-wrap img {
    width: 160px;
    height: 160px;
    object-fit: contain;
    display: block;
}
.qr-code-tip {
    margin-top: 12px;
    font-size: 13px;
    color: #999;
}

@media (max-width: 640px) {
    .partner-modal { border-radius: 12px 12px 0 0; max-height: 95vh; }
    .partner-modal-body { padding: 24px 20px 32px; }
    .partner-modal-title { font-size: 22px; }
    .partner-modal-emoji { font-size: 56px; }
    .partner-modal-header { padding: 40px 0 28px; }
}

/* CTA */
.partner-cta { padding: 0 0 80px; }
.partner-cta-box {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: #fff;
    border-radius: 16px;
    padding: 56px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.partner-cta-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.partner-cta-box h2 { font-size: 30px; font-weight: 700; margin: 0 0 12px; position: relative; z-index: 1; }
.partner-cta-box p { font-size: 16px; opacity: .85; margin: 0 0 28px; position: relative; z-index: 1; }
.partner-cta-btn {
    display: inline-block;
    padding: 14px 40px;
    background: #fbbf24;
    color: #1e3a8a;
    border-radius: 50px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 700;
    position: relative;
    z-index: 1;
    transition: all .3s;
    box-shadow: 0 6px 20px rgba(251,191,36,.35);
}
.partner-cta-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(251,191,36,.5); }
@media (max-width: 640px) {
    .partner-cta { padding: 0 0 50px; }
    .partner-cta-box { padding: 40px 24px; }
    .partner-cta-box h2 { font-size: 24px; }
}

/* Loading */
.partner-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    color: #888;
    font-size: 15px;
}
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #e5e7eb;
    border-top-color: #3b82f6;
    border-radius: 50%;
    animation: spin .8s linear infinite;
    margin-bottom: 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Empty state */
.partner-empty {
    text-align: center;
    padding: 60px 20px;
    background: #fff;
    border-radius: 16px;
    color: #999;
}
.partner-empty-icon { font-size: 64px; margin-bottom: 16px; }
.partner-empty p { font-size: 16px; }

/* 英雄动画 */
.animate-fadeInUp {
    opacity: 0;
    animation: fadeInUp .8s ease forwards;
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==================== 项目详情页 ==================== */
.partner-detail {
    max-width: 1200px;
    margin: 0 auto;
}
.partner-detail-top {
    display: flex;
    gap: 48px;
    align-items: flex-start;
    margin-bottom: 48px;
    padding: 40px;
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 4px 24px rgba(0,0,0,.06);
}
.partner-detail-img {
    flex: 0 0 520px;
    max-width: 520px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0,0,0,.12);
    background: #f8fafc;
}
.partner-detail-img img {
    width: 100%;
    height: 360px;
    object-fit: cover;
    display: block;
}
.partner-detail-meta {
    flex: 1;
    min-width: 0;
    padding-top: 16px;
}
.partner-detail-meta h1 {
    font-size: 34px;
    font-weight: 700;
    color: #1a1a2e;
    margin: 0 0 20px;
    line-height: 1.3;
}
.partner-detail-meta .summary {
    font-size: 16px;
    line-height: 1.9;
    color: #555;
    margin: 0 0 32px;
}

/* 项目详情主体 */
.partner-detail-body {
    display: flex;
    flex-direction: column;
    gap: 32px;
}
.partner-detail-section {
    background: #fff;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 4px 24px rgba(0,0,0,.06);
}
.section-title {
    position: relative;
    font-size: 22px;
    font-weight: 700;
    color: #1a1a2e;
    margin: 0 0 28px;
    padding-left: 16px;
    line-height: 1.4;
}
.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: linear-gradient(180deg, #1a73e8, #1557b0);
    border-radius: 2px;
}

/* 富文本内容区 - 限制图片不超出 */
.partner-detail-content {
    font-size: 16px;
    line-height: 1.9;
    color: #444;
}
.partner-detail-content img {
    max-width: 100% !important;
    height: auto !important;
    border-radius: 12px;
    display: block;
    margin: 20px 0;
    box-shadow: 0 4px 16px rgba(0,0,0,.08);
}
.partner-detail-content p {
    margin-bottom: 16px;
}
.partner-detail-content h2,
.partner-detail-content h3,
.partner-detail-content h4 {
    color: #1a1a2e;
    margin: 28px 0 16px;
    font-weight: 600;
}
.partner-detail-content ul,
.partner-detail-content ol {
    margin: 16px 0;
    padding-left: 28px;
}
.partner-detail-content li {
    margin-bottom: 8px;
}
.partner-detail-content a {
    color: #1a73e8;
    text-decoration: none;
}
.partner-detail-content a:hover {
    text-decoration: underline;
}

/* 二维码区域 */
.partner-detail-qr {
    background: #fff;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 4px 24px rgba(0,0,0,.06);
    text-align: center;
}
.qr-code-wrap {
    display: inline-block;
    padding: 16px;
    background: #f8fafc;
    border-radius: 16px;
    margin: 8px 0 12px;
}
.qr-code-wrap img {
    width: 180px;
    height: 180px;
    object-fit: contain;
    display: block;
}
.qr-code-tip {
    font-size: 14px;
    color: #888;
    margin: 0;
}

@media (max-width: 900px) {
    .partner-detail-top {
        flex-direction: column;
        gap: 28px;
        padding: 24px;
    }
    .partner-detail-img {
        flex: none;
        max-width: 100%;
        width: 100%;
    }
    .partner-detail-img img {
        height: 260px;
    }
    .partner-detail-meta h1 {
        font-size: 26px;
    }
    .partner-detail-section,
    .partner-detail-qr {
        padding: 24px;
    }
}

/* ===== 下载中心 ===== */
.download-page {
    min-height: 400px;
    padding: 60px 0 80px;
}
.download-header {
    text-align: center;
    margin-bottom: 48px;
}
.download-header h1 {
    font-size: 32px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 12px;
}
.download-header p {
    font-size: 15px;
    color: #7c7c8a;
}
.download-empty {
    text-align: center;
    padding: 100px 0;
    color: #999;
    font-size: 16px;
}

/* 加载动画 */
.loading-spinner {
    width: 32px;
    height: 32px;
    margin: 0 auto;
    border: 3px solid #e5e7eb;
    border-top-color: #4f46e5;
    border-radius: 50%;
    animation: spin .8s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 分类区块 */
.download-category {
    margin-bottom: 36px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 2px 16px rgba(0,0,0,.05);
    overflow: hidden;
}
.download-cat-title {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a2e;
    padding: 18px 28px;
    background: linear-gradient(135deg, #eef2ff, #f0f5ff);
    border-bottom: 1px solid #e8ecf4;
    display: flex;
    align-items: center;
    gap: 8px;
}
.cat-icon {
    color: #4f46e5;
    font-size: 20px;
}
.cat-count {
    font-weight: 400;
    font-size: 14px;
    color: #8b8fa3;
}
/* 子分类：逐级弱化，形成层级观感 */
.download-cat-level-1 .download-cat-title,
.download-cat-level-2 .download-cat-title,
.download-cat-level-3 .download-cat-title,
.download-cat-level-4 .download-cat-title,
.download-cat-level-5 .download-cat-title {
    font-size: 16px;
    padding: 14px 24px;
    background: #f7f8fc;
}
.download-cat-level-1,
.download-cat-level-2,
.download-cat-level-3,
.download-cat-level-4,
.download-cat-level-5 {
    margin-bottom: 20px;
    box-shadow: 0 1px 8px rgba(0,0,0,.04);
}
.download-cat-level-2 .download-cat-title,
.download-cat-level-3 .download-cat-title,
.download-cat-level-4 .download-cat-title,
.download-cat-level-5 .download-cat-title {
    font-size: 15px;
    background: #fbfbfd;
}

/* 文件列表 */
.download-file-list {
    padding: 0;
}
.download-file-item {
    display: flex;
    align-items: center;
    padding: 16px 28px;
    border-bottom: 1px solid #f3f4f6;
    transition: background .2s;
}
.download-file-item:last-child {
    border-bottom: none;
}
.download-file-item:hover {
    background: #fafbfc;
}
.file-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: #f0f4ff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
    margin-right: 16px;
}
.file-info {
    flex: 1;
    min-width: 0;
}
.file-name {
    font-size: 15px;
    font-weight: 500;
    color: #1f2937;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 4px;
    max-width: 500px;
}
.file-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: #9ca3af;
}
.file-type-tag {
    background: #eff6ff;
    color: #3b82f6;
    padding: 1px 8px;
    border-radius: 4px;
    font-size: 12px;
}
.file-action {
    flex-shrink: 0;
    margin-left: 20px;
}
.btn-download {
    display: inline-block;
    padding: 8px 24px;
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: #fff;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all .25s;
    box-shadow: 0 2px 8px rgba(79,70,229,.25);
}
.btn-download:hover {
    background: linear-gradient(135deg, #4338ca, #4f46e5);
    box-shadow: 0 4px 16px rgba(79,70,229,.35);
    transform: translateY(-1px);
}

/* 响应式 */
@media (max-width: 768px) {
    .download-page {
        padding: 40px 0 60px;
    }
    .download-header h1 {
        font-size: 24px;
    }
    .download-category {
        border-radius: 12px;
        margin-bottom: 24px;
    }
    .download-cat-title {
        padding: 14px 16px;
        font-size: 16px;
    }
    .download-file-item {
        padding: 14px 16px;
        flex-wrap: wrap;
    }
    .file-icon {
        width: 36px;
        height: 36px;
        font-size: 20px;
        margin-right: 12px;
    }
    .file-name {
        font-size: 14px;
        max-width: 220px;
    }
    .file-action {
        margin-left: 0;
        margin-top: 10px;
        width: 100%;
    }
    .btn-download {
        width: 100%;
        text-align: center;
    }
}