/* ============================================================
   5147.cn 全新科技风主题 v2
   设计：深色 Hero + 毛玻璃导航 + 圆角卡片 + 科技蓝
   字体：系统字体栈（不内嵌、不分发，零侵权）
   ============================================================ */

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display",
               "SF Pro Text", "Helvetica Neue", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: #fff;
  color: #1d1d1f;
  line-height: 1.6;
  letter-spacing: -0.01em;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.tech-page { overflow-x: hidden; }
.tech-container { max-width: 1200px !important; margin: 0 auto; padding: 0 24px; width: 100%; }

/* ============ 顶部导航 ============ */
.tech-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.8);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.tech-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.tech-logo img { height: 36px; width: auto; }

/* SVG Logo */
.tech-logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
}
.tech-logo-link svg { flex-shrink: 0; }
.tech-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.tech-logo-name {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #1d1d1f;
}
.tech-logo-dot {
  font-size: 13px;
  font-weight: 500;
  color: #86868b;
  margin-left: 1px;
}
.tech-logo-sub {
  font-size: 11px;
  color: #86868b;
  letter-spacing: 0.08em;
  margin-top: 2px;
}
.tech-menu ul { display: flex; gap: 4px; }
.tech-menu > ul > li { position: relative; }
.tech-menu > ul > li > a {
  display: block;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: #1d1d1f;
  border-radius: 980px;
  transition: all .2s;
}
.tech-menu > ul > li > a:hover {
  color: #0071e3;
  background: rgba(0,113,227,0.06);
}
.tech-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 200px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: all .25s;
}
.tech-menu > ul > li:hover .tech-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.tech-dropdown li a {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  color: #1d1d1f;
  border-radius: 8px;
  white-space: nowrap;
  text-align: center;
}
.tech-dropdown li a:hover {
  background: #f5f5f7;
  color: #0071e3;
}
.tech-nav-right { display: flex; align-items: center; gap: 12px; }
.tech-search-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: #1d1d1f;
  transition: all .2s;
}
.tech-search-btn:hover { background: #f5f5f7; color: #0071e3; }

/* 搜索下拉 */
.tech-search-drop {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s;
  background: rgba(255,255,255,0.95);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.tech-search-drop.open { max-height: 120px; }
.tech-search-drop form {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  gap: 12px;
}
.tech-search-drop input {
  flex: 1;
  height: 44px;
  padding: 0 18px;
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: 980px;
  font-size: 15px;
  outline: none;
  font-family: inherit;
}
.tech-search-drop input:focus { border-color: #0071e3; }
.tech-search-drop button {
  height: 44px;
  padding: 0 28px;
  border: none;
  border-radius: 980px;
  background: #0071e3;
  color: #fff;
  font-size: 15px;
  cursor: pointer;
  font-family: inherit;
}

/* 汉堡按钮（移动端） */
.tech-burger {
  display: none;
  position: fixed;
  top: 14px; right: 16px;
  z-index: 1100;
  width: 40px; height: 40px;
  background: #fff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.tech-burger span {
  width: 20px; height: 2px;
  background: #1d1d1f;
  border-radius: 2px;
}

/* 移动端抽屉 */
.tech-mask {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 1050;
}
.tech-mobile-menu {
  position: fixed;
  top: 0; right: -280px;
  width: 280px; height: 100vh;
  background: #fff;
  z-index: 1060;
  transition: right .3s;
  padding: 20px;
}
body.menu-open .tech-mobile-menu { right: 0; }
body.menu-open .tech-mask { display: block; }
.tech-mobile-head {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 16px; border-bottom: 1px solid #f0f0f0;
  margin-bottom: 16px;
}
.tech-mobile-head img { height: 30px; }
.tech-mobile-head button {
  background: none; border: none; font-size: 22px; cursor: pointer; color: #6e6e73;
}
.tech-mobile-menu ul li a {
  display: block;
  padding: 12px 8px;
  font-size: 16px;
  color: #1d1d1f;
  border-radius: 8px;
}
.tech-mobile-menu ul li a:hover { background: #f5f5f7; }

/* ============ Hero 区 ============ */
.tech-hero {
  position: relative;
  padding: 160px 24px 120px;
  background: #0a0a14;
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.tech-hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,113,227,0.35) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 100%, rgba(120,0,255,0.25) 0%, transparent 60%),
    linear-gradient(180deg, #0a0a14 0%, #141428 100%);
}
.tech-hero-inner {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}
.tech-hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 980px;
  font-size: 13px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.tech-hero h1 {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.tech-hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, #0071e3, #7b61ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.tech-hero p {
  font-size: 19px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 36px;
}
.tech-hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 按钮 */
.tech-btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 980px;
  font-size: 16px;
  font-weight: 500;
  transition: all .25s;
}
.tech-btn-primary {
  background: #0071e3;
  color: #fff;
}
.tech-btn-primary:hover {
  background: #0077ed;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,113,227,0.4);
}
.tech-btn-ghost {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
}
.tech-btn-ghost:hover {
  background: rgba(255,255,255,0.15);
}
.tech-btn-lg { padding: 16px 40px; font-size: 18px; }

/* ============ 通用 Section ============ */
.tech-section {
  padding: 100px 0;
  background: #fff;
}
.tech-section-head {
  text-align: center;
  margin-bottom: 56px;
}
.tech-section-head h2 {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.tech-section-head p {
  font-size: 17px;
  color: #6e6e73;
}

/* ============ 优势卡片 ============ */
.tech-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.tech-card {
  padding: 32px 24px;
  background: #f5f5f7;
  border-radius: 20px;
  transition: all .3s;
}
.tech-card:hover {
  background: #fff;
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
  transform: translateY(-4px);
}
.tech-card-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #0071e3, #7b61ff);
  color: #fff;
  border-radius: 12px;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 18px;
}
.tech-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
.tech-card p {
  font-size: 14px;
  color: #6e6e73;
  line-height: 1.6;
}

/* ============ 数据条 ============ */
.tech-stats {
  padding: 64px 0;
  background: #f5f5f7;
}
.tech-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.tech-stat-num {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #0071e3, #7b61ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}
.tech-stat-label {
  font-size: 14px;
  color: #6e6e73;
}

/* ============ 资讯卡片 ============ */
.tech-news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tech-news-card {
  background: #fff;
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 20px;
  overflow: hidden;
  transition: all .3s;
}
.tech-news-card:hover {
  box-shadow: 0 12px 32px rgba(0,0,0,0.1);
  transform: translateY(-4px);
}
.tech-news-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #f5f5f7;
}
.tech-news-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.tech-news-card:hover .tech-news-thumb img { transform: scale(1.05); }
.tech-news-body { padding: 20px 22px 24px; }
.tech-news-date {
  font-size: 12px;
  color: #86868b;
  margin-bottom: 8px;
}
.tech-news-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  color: #1d1d1f;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.tech-news-body p {
  font-size: 14px;
  color: #6e6e73;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============ CTA ============ */
.tech-cta {
  padding: 100px 24px;
  background: linear-gradient(135deg, #0a0a14 0%, #1a1a3e 100%);
  color: #fff;
  text-align: center;
}
.tech-cta h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
}
.tech-cta p {
  font-size: 17px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 32px;
}

/* ============ Footer ============ */
.tech-footer {
  background: #0a0a14;
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}
.tech-footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.tech-footer-cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.tech-footer-brand img { height: 32px; margin-bottom: 16px; }
.tech-footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.tech-footer-name {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}
.tech-footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.5);
}
.tech-footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.tech-footer-col ul li { margin-bottom: 10px; }
.tech-footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: color .2s;
}
.tech-footer-col ul li a:hover { color: #fff; }
.tech-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.tech-footer-bottom a { color: rgba(255,255,255,0.5); }

/* ============ 内页兼容（面包屑、列表等） ============ */
.breadcrumb-area {
  margin-top: 64px;
  padding: 40px 0;
  background: #f5f5f7;
  text-align: center;
}
.breadcrumb-content a, .breadcrumb-content li {
  color: #6e6e73;
  font-size: 14px;
}

/* ============ 响应式 ============ */
@media (max-width: 992px) {
  .tech-menu, .tech-nav-right .tech-search-btn { display: none; }
  .tech-burger { display: flex; }
  .tech-nav-inner { padding: 0 16px; }
  .tech-hero { padding: 120px 20px 80px; }
  .tech-hero h1 { font-size: 36px; }
  .tech-hero p { font-size: 16px; }
  .tech-cards, .tech-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-news-grid { grid-template-columns: 1fr; }
  .tech-footer-cols { grid-template-columns: 1fr; gap: 28px; }
  .tech-section { padding: 60px 0; }
  .tech-section-head h2 { font-size: 26px; }
}
@media (max-width: 480px) {
  .tech-cards, .tech-stats-grid { grid-template-columns: 1fr; }
  .tech-hero h1 { font-size: 28px; }
}

/* ============ 内页内容区 ============ */
.wrapper { background: #fff; }

/* 内页标题区 */
.tech-page-hero {
  margin-top: 64px;
  padding: 40px 0 24px;
  background: linear-gradient(180deg, #f5f5f7 0%, #fff 100%);
  text-align: center;
}
.tech-page-hero h1 {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.tech-breadcrumb {
  font-size: 14px;
  color: #86868b;
}
.tech-breadcrumb a { color: #0071e3; }

.tech-page-body {
  padding: 24px 0 60px;
  background: #fff;
  min-height: 60vh;
}

/* 关于页左右布局 */
.tech-about-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 30px;
  align-items: start;
}
.tech-side-card {
  background: #f5f5f7;
  border-radius: 16px;
  padding: 24px;
  position: sticky;
  top: 88px;
}
.tech-side-card h4 {
  font-size: 14px;
  font-weight: 600;
  color: #6e6e73;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.tech-side-card ul li a {
  display: block;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14px;
  color: #1d1d1f;
  margin-bottom: 4px;
  transition: all .2s;
}
.tech-side-card ul li a:hover,
.tech-side-card ul li a.active {
  background: #fff;
  color: #0071e3;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* 主内容卡片 */
.tech-main-card {
  background: #fff;
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: 20px;
  padding: 40px;
}
.tech-article {
  font-size: 16px;
  line-height: 2;
  color: #333;
}
.tech-article p { margin-bottom: 18px; }
.tech-article img {
  max-width: 100% !important;
  height: auto !important;
  border-radius: 12px;
  margin: 16px auto;
  display: block;
}
.tech-article p { margin-bottom: 16px; }
.tech-article h2, .tech-article h3 {
  margin: 24px 0 12px;
  font-weight: 600;
}
.tech-article-meta {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: #86868b;
  padding-bottom: 16px;
  margin-bottom: 24px;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.tech-article-wrap { max-width: 100%; }

/* 列表页三列满宽 */
.tech-news-grid-full {
  grid-template-columns: repeat(3, 1fr);
}

/* 分页 */
.tech-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.tech-pagination a, .tech-pagination span {
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 14px;
  background: #f5f5f7;
  color: #1d1d1f;
}
.tech-pagination a:hover {
  background: #0071e3;
  color: #fff;
}
.tech-empty {
  text-align: center;
  color: #86868b;
  padding: 60px 0;
}

/* 标签云 */
.tech-tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tech-tags-cloud a {
  padding: 8px 18px;
  background: #f5f5f7;
  border-radius: 980px;
  font-size: 14px;
  color: #1d1d1f;
  transition: all .2s;
}
.tech-tags-cloud a:hover {
  background: #0071e3;
  color: #fff;
}

/* 响应式内页 */
@media (max-width: 992px) {
  .tech-about-layout { grid-template-columns: 1fr; }
  .tech-side { position: static; }
  .tech-side-card { position: static; }
  .tech-news-grid-full { grid-template-columns: repeat(2, 1fr); }
  .tech-page-hero h1 { font-size: 28px; }
  .tech-main-card { padding: 24px; }
}
@media (max-width: 600px) {
  .tech-news-grid-full { grid-template-columns: 1fr; }
}

/* 文章列表卡片 */
.blog-area, .product-details-area, .my-account-wrapper {
  margin-top: 64px;
  padding: 60px 0 !important;
  background: #f5f5f7;
  min-height: 60vh;
}
.blog-wrap.vc_view, .blog-wrap.text-center {
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  transition: all .3s;
  border: 1px solid rgba(0,0,0,0.04);
}
.blog-wrap.vc_view:hover, .blog-wrap.text-center:hover {
  box-shadow: 0 12px 32px rgba(0,0,0,0.1);
  transform: translateY(-4px);
}
.blog-wrap .blog-img { overflow: hidden; }
.blog-wrap .blog-img img { transition: transform .4s; }
.blog-wrap:hover .blog-img img { transform: scale(1.04); }
.blog-content { padding: 20px !important; }
.blog-content h3 { font-size: 17px !important; font-weight: 600; line-height: 1.4; margin-bottom: 8px; }
.blog-content h3 a { color: #1d1d1f !important; }
.blog-content h3 a:hover { color: #0071e3 !important; }
.blog-meta li { display: inline-block; margin-right: 12px; }
.blog-meta li a { font-size: 12px !important; color: #86868b !important; }
.blog-content p { font-size: 14px; color: #6e6e73; line-height: 1.7; }

/* 侧边栏 */
.sidebar-style {
  background: #fff;
  padding: 24px;
  border-radius: 16px;
  border: 1px solid rgba(0,0,0,0.04);
}
.pro-sidebar-title {
  font-size: 15px !important;
  font-weight: 600 !important;
  padding-bottom: 10px;
  border-bottom: 2px solid #1d1d1f;
  display: inline-block;
  margin-bottom: 16px;
}
.pro-sidebar-search-form input {
  height: 40px;
  border-radius: 980px !important;
  border: 1px solid rgba(0,0,0,0.1) !important;
  padding: 0 16px;
  width: 100%;
}
.sidebar-widget-list-left a,
.sidebar-widget ul li a {
  color: #1d1d1f !important;
  font-size: 14px;
  padding: 8px 0;
  display: block;
}
.sidebar-widget-tag ul li { display: inline-block; margin: 0 6px 8px 0; }
.sidebar-widget-tag ul li a {
  background: #f5f5f7 !important;
  border-radius: 980px !important;
  padding: 6px 14px !important;
  font-size: 13px !important;
  color: #1d1d1f !important;
}
.sidebar-widget-tag ul li a:hover {
  background: #0071e3 !important;
  color: #fff !important;
}

/* 分页 */
.pagination, .pagebar { display: flex; justify-content: center; gap: 6px; margin-top: 30px; }
.pagination a, .pagination span, .pagebar a {
  padding: 8px 14px;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 8px;
  font-size: 14px;
  color: #1d1d1f;
}
.pagination a:hover, .pagination a.active {
  background: #0071e3;
  color: #fff;
  border-color: #0071e3;
}

/* 关于页 tab */
.myaccount-tab-menu {
  background: #fff;
  padding: 12px;
  border-radius: 16px;
}
.myaccount-tab-menu a {
  display: block;
  padding: 12px 16px !important;
  border-radius: 10px;
  color: #1d1d1f !important;
  font-size: 14px;
  margin-bottom: 4px;
}
.myaccount-tab-menu a.active, .myaccount-tab-menu a:hover {
  background: rgba(0,113,227,0.08) !important;
  color: #0071e3 !important;
}
.myaccount-content {
  background: #fff;
  padding: 32px;
  border-radius: 16px;
}
.myaccount-content h3 { font-size: 24px; margin-bottom: 20px; }

/* 面包屑 */
.breadcrumb-area {
  padding: 100px 0 30px !important;
  background: #f5f5f7 !important;
}

/* 产品详情 */
.product-details-content h2 { font-size: 28px; margin-bottom: 12px; }
.product-details-price .new { color: #0071e3; font-size: 24px; font-weight: 700; }
.pro-details-cart a {
  display: inline-block;
  padding: 12px 28px;
  background: #0071e3;
  color: #fff;
  border-radius: 980px;
}
.product-description-wrapper img { max-width: 100%; border-radius: 8px; }

/* 联系页表单 */
.pro-sidebar-search-form button, .form-search button {
  border-radius: 980px !important;
}


.tech-article table, .tech-article video, .tech-article iframe { max-width: 100% !important; }