:root {
  --primary: #1a3a5c;
  --primary-dark: #0f2b46;
  --primary-light: #2c5282;
  --primary-50: #e8eef4;
  --primary-100: #d1dce8;
  --accent: #c9a961;
  --accent-dark: #b8943f;
  --accent-light: #e0c98f;
  --cta: #e87722;
  --cta-dark: #d46a1a;
  --text: #1a202c;
  --text-light: #64748b;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-dark: #0f2b46;
  --border: #e2e8f0;
  --radius: 14px;
  --radius-sm: 8px;
  --maxw: 1200px;
  --shadow-sm: 0 1px 3px rgba(15, 43, 70, 0.08);
  --shadow-md: 0 4px 12px rgba(15, 43, 70, 0.1);
  --shadow-lg: 0 12px 32px rgba(15, 43, 70, 0.12);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  padding-top: 138px;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* 导航 */
.navbar {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  z-index: 1000;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
/* 顶行：联系信息 + 搜索 */
.nav-top {
  background: rgba(0, 0, 0, 0.12);
  border-bottom: 1px solid #e5e7eb;
}
.nav-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 38px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.nav-top-contact {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}
.nav-top-label {
  color: #6b7280;
  font-weight: 500;
}
.nav-top-value {
  color: #1f2937;
  text-decoration: none !important;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-top-value:hover { color: var(--primary); }
.nav-top-divider {
  color: #d1d5db;
  margin: 0 6px;
}
.nav-top-search {
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-search-input {
  width: 200px;
  height: 28px;
  padding: 0 10px;
  border: 1px solid #d1d5db;
  border-right: none;
  border-radius: 4px 0 0 4px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}
.nav-search-input:focus { border-color: var(--primary); }
.nav-search-btn {
  height: 28px;
  padding: 0 10px;
  border: 1px solid #d1d5db;
  border-radius: 0 4px 4px 0;
  background: #f9fafb;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.2s;
}
.nav-search-btn:hover { background: #e5e7eb; }
/* 底行：Logo + 菜单 */
.nav-main {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
}
.nav-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  height: auto;
  min-height: 100px;
  padding: 12px 0;
}
.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}
.logo img {
  height: 100px;
  width: auto;
  display: block;
}
.nav-menu {
  display: flex;
  gap: 24px;
  align-items: flex-end;
  position: relative;
}
.nav-link {
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--accent); }
.nav-link.active { font-weight: 700; color: var(--accent); position: relative; }
.nav-link.active::after { content: ""; position: absolute; bottom: -8px; left: 0; right: 0; height: 3px; background: var(--accent); border-radius: 2px; }

/* Products 悬停下拉菜单 */
.nav-has-dropdown { position: static; }  /* 让下拉框相对 .nav-menu 定位，约束在导航栏范围内 */
.nav-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  left: auto;
  margin-top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.16);
  padding: 20px 24px;
  display: none;
  gap: 36px;
  z-index: 200;
  min-width: 640px;
  max-width: 100%;
}
.nav-dropdown::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: -10px;
  height: 10px;
}
.nav-has-dropdown:hover .nav-dropdown,
.nav-has-dropdown:focus-within .nav-dropdown { display: flex; }
.nav-dd-col { min-width: 180px; flex: 1; }
.nav-dd-cat {
  display: block;
  font-weight: 700;
  color: #1a1a1a;
  font-size: 15px;
  padding: 6px 10px 8px;
  margin-bottom: 6px;
  text-decoration: none;
  border-bottom: 2px solid #eef2f7;
  border-radius: 6px 6px 0 0;
  transition: all 0.25s ease;
}
.nav-dd-cat:hover {
  color: var(--accent-dark);
  border-bottom-color: var(--accent);
  background: linear-gradient(180deg, rgba(201,169,97,0.06) 0%, transparent 100%);
}
.nav-dd-subs { display: flex; flex-direction: column; gap: 2px; }
.nav-dd-sub {
  display: block;
  color: #1f2937;
  font-size: 14px;
  font-weight: 500;
  padding: 7px 10px 7px 12px;
  text-decoration: none;
  line-height: 1.4;
  border-radius: 6px;
  border-left: 3px solid transparent;
  transition: all 0.25s ease;
}
.nav-dd-sub:hover {
  color: var(--primary-dark);
  background: var(--primary-50);
  border-left-color: var(--accent);
  padding-left: 16px;
  transform: translateX(2px);
}
@media (max-width: 820px) {
  .nav-dropdown { position: static; min-width: 0; box-shadow: none; border: 0; padding: 4px 0 8px 12px; display: none; flex-direction: column; gap: 0; }
  .nav-has-dropdown:hover .nav-dropdown { display: flex; }
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text);
  cursor: pointer;
}
.lang-switch {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--primary);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  padding: 5px 12px;
  cursor: pointer;
  margin-left: 14px;
}
.lang-switch:hover { background: rgba(37, 99, 235, 0.08); }

/* 首屏 */
.hero {
  position: relative;
  background-image: url('/uploads/banner/hero.png');
  background-size: cover;
  background-position: center;
  background-color: #0f172a;
  min-height: 100vh;
  padding: 0;
  display: flex;
  align-items: center;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,23,42,0.55) 0%, rgba(15,23,42,0.35) 100%);
}
.hero-inner { position: relative; z-index: 1; }
.hero-title {
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
  font-size: 38px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #fff;
  text-shadow: 0 2px 14px rgba(0,0,0,0.4);
}
.hero-subtitle {
  font-size: 17px;
  color: rgba(255,255,255,0.92);
  max-width: 560px;
  margin: 0 auto 28px;
  text-shadow: 0 1px 8px rgba(0,0,0,0.35);
}
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-actions .btn-ghost { color: #fff; border-color: rgba(255,255,255,0.85); }
.hero-actions .btn-ghost:hover { background: rgba(255,255,255,0.16); }

/* 按钮 */
.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform 0.15s, background 0.2s;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--cta); color: #fff; transition: all 0.2s; }
.btn-primary:hover { background: var(--cta-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(232, 119, 34, 0.3); }

.btn-ghost {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-ghost:hover { background: rgba(26, 58, 92, 0.08); border-color: var(--primary); color: var(--primary); }

/* 区块 */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-alt); }
.section-title {
  position: relative;
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 10px;
  color: var(--primary-dark);
}
.section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 14px auto 0;
  border-radius: 2px;
}
.section-desc {
  text-align: center;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 40px;
}

/* 网格 */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

/* 产品卡片 */
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}
.card-icon { font-size: 40px; margin-bottom: 14px; }
.card-title { font-size: 19px; margin-bottom: 8px; }
.card-text { color: var(--text-light); font-size: 14px; }

/* 应用 */
.app-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.app-title { font-size: 18px; margin-bottom: 8px; }
.app-text { color: var(--text-light); font-size: 14px; }
.app-icon { font-size: 38px; margin-bottom: 12px; }

/* 产品卡可点击进入详情页 */
.product-card { display: block; text-decoration: none; color: inherit; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0,0,0,0.08); }

/* 联系 */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info p { margin-bottom: 12px; font-size: 15px; }
.contact-form { display: flex; flex-direction: column; gap: 14px; }
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  resize: vertical;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary);
}

/* 页脚 */
.footer {
  background: #111827;
  color: #9ca3af;
  text-align: center;
  padding: 24px 0;
  font-size: 14px;
  margin-top: auto;
}

/* ===== 内页通用 ===== */
.page-header {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  padding: 64px 0;
  text-align: center;
}
.page-header h1 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 10px;
}
.page-header p {
  color: var(--text-light);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto;
}

/* 数据成就 */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.stat {
  text-align: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 12px;
}
.stat-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--primary);
}
.stat-label { color: var(--text-light); font-size: 14px; margin-top: 6px; }

/* 时间轴 */
.timeline { position: relative; margin-top: 30px; padding-left: 24px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 6px; top: 4px; bottom: 4px;
  width: 2px; background: var(--border);
}
.timeline-item { position: relative; padding: 0 0 26px 18px; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -22px; top: 6px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid #fff;
}
.timeline-year { font-weight: 700; color: var(--primary); }
.timeline-text { color: var(--text-light); font-size: 14px; }

/* 双栏图文 */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.split h3 { font-size: 22px; margin-bottom: 12px; }
.split p { color: var(--text-light); margin-bottom: 12px; }
.split-img {
  background: linear-gradient(135deg, #dbeafe, #bfdbfe);
  border-radius: var(--radius);
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 15px;
}

/* 产品详情 */
.product-detail {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  margin-bottom: 20px;
}
.product-detail .card-icon { font-size: 44px; margin: 0; }
.product-detail h3 { font-size: 19px; margin-bottom: 8px; }
.product-detail p { color: var(--text-light); font-size: 14px; }
.product-tags { margin-top: 10px; }
.product-tags span {
  display: inline-block;
  background: #eff6ff;
  color: var(--primary);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  margin: 4px 6px 0 0;
}

/* 首页：大类概览卡 */
.cat-card { text-decoration: none; color: inherit; display: block; }
.cat-card-main { display: block; text-decoration: none; color: inherit; }
.cat-download { display: inline-block; margin-top: 10px; font-size: 13px; font-weight: 600; color: var(--primary); text-decoration: none; }
.cat-download:hover { text-decoration: underline; }
.cat-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08); }
.cat-chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin: 12px 0 14px; }
.cat-chip {
  display: inline-block;
  background: var(--bg-alt);
  color: var(--text-light);
  font-size: 13px;
  padding: 5px 12px;
  border-radius: 999px;
}
.cat-chip.muted { opacity: 0.7; }
.cat-more { font-size: 14px; font-weight: 600; color: var(--primary); }

/* 产品页：三级目录 */
.prod-cat { margin-bottom: 48px; }
.prod-cat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
}
.prod-cat-title {
  font-size: 24px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
}
.btn-catalog {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--primary);
  color: var(--primary);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  background: #fff;
  white-space: nowrap;
}
.btn-catalog:hover { background: var(--primary); color: #fff; }
.prod-cat-dot {
  width: 12px; height: 12px;
  border-radius: 3px;
  background: var(--primary);
  display: inline-block;
}
.prod-sub { margin-top: 26px; }
.prod-sub-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 18px;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
}

/* 后台：分类管理 */
.cat-mgr { border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; margin-bottom: 14px; background: #fafafa; }
.cat-mgr-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.cat-mgr-head .title { font-weight: 700; font-size: 15px; }
.cat-subs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.cat-sub-row { display: inline-flex; align-items: center; gap: 6px; background: #fff; border: 1px solid var(--border); border-radius: 999px; padding: 4px 6px 4px 12px; }
.cat-sub-row button { padding: 4px 8px; font-size: 12px; }
.cat-add-sub { margin-top: 4px; }
.cat-mgr-head .cat-edit { display: flex; gap: 6px; flex: 1; min-width: 0; }
.cat-mgr-head .cat-edit input { margin: 0; }
.cat-mgr-head .cat-mgr-btns { display: flex; gap: 6px; flex-shrink: 0; }
.cat-sub-row .cat-sub-edit { display: flex; gap: 4px; flex-wrap: wrap; }
.cat-sub-row .cat-sub-edit input { width: auto; flex: 1; min-width: 80px; padding: 4px 8px; font-size: 13px; }
.cat-sub-row .cat-sub-btns { display: flex; gap: 4px; flex-shrink: 0; }
.item-btns { display: flex; gap: 8px; flex-shrink: 0; }
.item-btns button { padding: 6px 14px; font-size: 13px; }

/* 地图占位 */
.map-placeholder {
  background: #e5e7eb;
  border-radius: var(--radius);
  min-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  margin-top: 20px;
}

@media (max-width: 768px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 24px; }
}

/* ===== Applications (Blog) ===== */
.blog-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.blog-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}
.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.07);
}
.blog-thumb {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: linear-gradient(135deg, #dbeafe, #bfdbfe);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 14px;
  overflow: hidden;
}
.blog-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.blog-card > div {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 20px 22px 22px;
  gap: 0;
}
.blog-meta { display: flex; gap: 10px; align-items: center; margin-bottom: 12px; font-size: 13px; }
.blog-cat {
  background: #eff6ff;
  color: var(--primary);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.blog-date { color: var(--text-light); }
.blog-card h3 { font-size: 18px; line-height: 1.45; margin-bottom: 10px; font-weight: 700; color: #1a1a1a; }
.blog-excerpt { color: #6b7280; font-size: 14px; margin-bottom: 16px; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.7; }
.blog-more { color: var(--primary); font-size: 14px; font-weight: 600; text-decoration: none; margin-top: auto; padding-top: 8px; }
.blog-more:hover { text-decoration: underline; }

@media (max-width: 1024px) {
  .blog-list { grid-template-columns: repeat(2, 1fr); }
}

/* 文章详情页 */
.post-article { max-width: 760px; margin: 0 auto; }
.post-cover { width: 100%; height: 320px; object-fit: cover; border-radius: 14px; margin-bottom: 24px; background: #e5e7eb; }
.post-cover-icon { display: flex; align-items: center; justify-content: center; font-size: 88px; height: 200px; background: #f3f4f6; }
.post-meta { display: flex; gap: 12px; align-items: center; margin-bottom: 12px; }
.post-meta .blog-cat { background: #eff6ff; color: var(--primary); font-size: 12px; padding: 2px 10px; border-radius: 999px; }
.post-meta .blog-date { color: var(--text-light); font-size: 13px; }
.post-title { font-size: 28px; line-height: 1.35; margin-bottom: 20px; }
.post-body { font-size: 16px; line-height: 1.9; color: #374151; }
.post-body p { margin-bottom: 18px; }
.post-body img { max-width: 100%; height: auto; border-radius: 8px; margin: 12px 0; }
.post-body h1, .post-body h2, .post-body h3 { margin: 20px 0 12px; color: #1f2937; }
.post-body ul, .post-body ol { margin: 12px 0; padding-left: 24px; }
.post-body blockquote { border-left: 4px solid #2563eb; padding: 8px 16px; margin: 16px 0; background: #f8fafc; color: #4b5563; }
.post-body pre { background: #1f2937; color: #f9fafb; padding: 16px; border-radius: 8px; overflow-x: auto; margin: 16px 0; }
.post-body a { color: #2563eb; text-decoration: underline; }

@media (max-width: 768px) {
  .blog-list { grid-template-columns: 1fr; }
  .post-cover { height: 200px; }
  .post-title { font-size: 22px; }
}

/* 认证展示 */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 28px;
}
.cert-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  text-decoration: none;
  color: var(--text);
  transition: box-shadow .2s, transform .2s;
}
.cert-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}
.cert-img {
  width: 100%;
  height: 220px;
  object-fit: contain;
  border-radius: 8px;
  background: #f9fafb;
}
.cert-label {
  margin-top: 14px;
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
}
.cert-strip {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 24px;
  padding: 32px;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border-radius: 16px;
  border: 1px solid #e2e8f0;
}
.cert-strip img {
  height: 180px;
  width: auto;
  object-fit: contain;
  border-radius: 8px;
  opacity: .85;
  background: #fff;
  padding: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: all 0.3s ease;
}
.cert-strip img:hover {
  opacity: 1;
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 24px rgba(26, 58, 92, 0.15);
}

/* 移动端 */
@media (max-width: 768px) {
  .cert-grid { grid-template-columns: 1fr; }
  .cert-img { height: 260px; }
  .cert-strip img { height: 150px; }
  .nav-toggle { display: block; }
  .nav-top { display: none; }
  .nav-search-input { width: 140px; }
  .logo img { height: 64px; }
  .nav-inner { min-height: auto; padding: 10px 0; }
  .nav-menu {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: #fff;
    border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    padding: 12px 20px;
    gap: 4px;
    display: none;
  }
  .nav-menu.open { display: flex; }
  .nav-link { padding: 10px 0; }

  .hero { min-height: 685px; padding: 40px 0; }
  .hero-title {
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
  text-shadow: 0 2px 8px rgba(0,0,0,0.3); font-size: 26px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; gap: 28px; }
  .section { padding: 52px 0; }
}

/* ====== 产品轮播 ====== */
.carousel-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  margin-top: 28px;
}
.carousel-track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 8px 4px 16px;
  flex: 1;
}
.carousel-track::-webkit-scrollbar { display: none; }
.carousel-btn {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid #d1d5db;
  background: #fff;
  font-size: 24px;
  color: #4b5563;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.carousel-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.carousel-prev { margin-right: 8px; }
.carousel-next { margin-left: 8px; }
/* 轮播产品卡片 */
.carousel-card {
  flex: 0 0 calc(25% - 15px);
  scroll-snap-align: start;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}
.carousel-card:hover {
  box-shadow: 0 12px 32px rgba(26, 58, 92, 0.15);
  transform: translateY(-4px);
  border-color: var(--accent);
}
.carousel-card-img {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.carousel-card-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 12px;
  transition: transform 0.3s ease;
}
.carousel-card:hover .carousel-card-img img { transform: scale(1.05); }
.carousel-card-img .carousel-card-icon {
  font-size: 56px;
  opacity: 0.25;
}
.carousel-card-body {
  padding: 14px 16px 18px;
}
.carousel-card-body h4 {
  font-size: 15px;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 6px;
  line-height: 1.4;
}
.carousel-card-body p {
  font-size: 13px;
  color: #6b7280;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
/* 指示点 */
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}
.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #d1d5db;
  border: none;
  cursor: pointer;
  transition: background 0.3s, transform 0.3s;
}
.carousel-dot.active {
  background: var(--primary);
  transform: scale(1.3);
}
/* 移动端 */
@media (max-width: 768px) {
  .carousel-card { flex: 0 0 80%; }
  .carousel-card-img { height: 150px; }
  .carousel-btn { width: 36px; height: 36px; font-size: 20px; }
}

/* 社交媒体链接 */
.social-links {
  display: flex;
  gap: 16px;
  margin: 14px 0;
  flex-wrap: wrap;
}
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  text-decoration: none;
  color: #4b5563;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
}
.social-link:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: #f0f7ff;
}
.social-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Footer 社交媒体图标 */
.footer-social {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  margin-bottom: 16px;
}
.footer-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  color: #fff;
  transition: background 0.2s, transform 0.2s;
}
.footer-social-link:hover { transform: translateY(-3px); }
.footer-social-link.em:hover { background: #ea4335; }
.footer-social-link.wa:hover { background: #25d366; }
.footer-social-link.fb:hover { background: #1877f2; }
.footer-social-link.x:hover  { background: #000000; }
.footer-social-link.li:hover { background: #0a66c2; }
.footer-social-icon {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* ===== Responsive UI refinement ===== */
:root {
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --ink-secondary: #4b5563;
  --surface-sunken: #f9fafb;
  --line-strong: #d1d5db;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, .10);
  --shadow-cta: 0 6px 16px rgba(37, 99, 235, .28);
  --ease-out: cubic-bezier(.2, .8, .2, 1);
  --touch-min: 44px;
}

html { overflow-x: hidden; }
body { overflow-x: hidden; }
button, a { touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid rgba(37, 99, 235, .4); outline-offset: 3px; }

.container { max-width: 1200px; padding-inline: clamp(16px, 3vw, 28px); }
.navbar { box-shadow: none; transition: box-shadow .25s ease; }
.nav-main { position: relative; }
.nav-inner {
  min-height: 72px;
  height: 72px;
  align-items: center;
  padding-block: 10px;
}
.logo img { height: 48px; width: auto; }
.nav-menu { align-items: center; gap: 8px; }
.nav-link { min-height: var(--touch-min); display: inline-flex; align-items: center; padding: 8px 12px; border-radius: 8px; }
.nav-link:hover, .nav-link:focus-visible { background: var(--primary-50); }
.nav-toggle {
  width: var(--touch-min);
  height: var(--touch-min);
  min-width: var(--touch-min);
  border-radius: 8px;
  align-items: center;
  justify-content: center;
}

.hero {
  min-height: min(680px, 78vh);
  padding: clamp(64px, 9vw, 112px) 0;
  text-align: left;
  background-position: center;
}
.hero::before {
  background: linear-gradient(90deg, rgba(15, 23, 42, .72) 0%, rgba(15, 23, 42, .40) 62%, rgba(15, 23, 42, .18) 100%);
}
.hero-inner { max-width: 1200px; margin: 0 auto; padding-inline: clamp(16px, 3vw, 28px); }
.hero-title {
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
  text-shadow: 0 2px 8px rgba(0,0,0,0.3); font-size: clamp(32px, 4.2vw, 52px); max-width: 700px; }
.hero-subtitle { margin-left: 0; margin-right: 0; max-width: 580px; font-size: clamp(16px, 1.5vw, 19px); }
.hero-actions { justify-content: flex-start; }
.btn { min-height: 48px; padding: 12px 22px; border-radius: 8px; box-shadow: none; }
.btn-primary:hover { box-shadow: var(--shadow-cta); }

.section { padding-block: clamp(52px, 7vw, 88px); }
.section-title {
  position: relative;
  position: relative; font-size: clamp(24px, 3vw, 32px); }
.section-desc { margin-bottom: clamp(28px, 4vw, 40px); }
.card, .app-item, .cert-card, .cat-card, .sub-card, .prod-card, .blog-card { border-radius: 12px; box-shadow: var(--shadow-sm); }
.card:hover, .product-card:hover, .cat-card:hover, .sub-card:hover, .prod-card:hover, .blog-card:hover { box-shadow: var(--shadow-md); }
.contact-form input, .contact-form textarea { border-radius: 8px; }
.contact-form input { min-height: 48px; }
.contact-form textarea { min-height: 120px; }
.footer-social-link { width: 44px; height: 44px; }

@media (max-width: 1023px) {
  .nav-top { display: none; }
  .nav-inner { min-height: 72px; height: 72px; }
  .nav-toggle { display: inline-flex; }
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    max-height: calc(100dvh - 72px);
    overflow-y: auto;
    padding: 10px max(16px, calc((100% - 1200px) / 2 + 16px)) 16px;
    background: rgba(255, 255, 255, .98);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    box-shadow: 0 16px 28px rgba(15, 23, 42, .12);
    z-index: 300;
  }
  .nav-menu.open { display: flex; animation: nav-drop-in .2s var(--ease-out); }
  .nav-link { width: 100%; justify-content: space-between; padding: 10px 12px; }
  .nav-has-dropdown { position: static; }
  .nav-has-dropdown > .nav-link::after { content: '+'; color: var(--text-light); font-size: 20px; line-height: 1; }
  .nav-has-dropdown.open > .nav-link::after { content: '−'; }
  .nav-dropdown, .nav-has-dropdown:hover .nav-dropdown, .nav-has-dropdown:focus-within .nav-dropdown { display: none; }
  .nav-has-dropdown.open .nav-dropdown { display: flex; }
  .nav-dropdown { position: static; flex-direction: column; gap: 0; padding: 4px 0 8px 14px; border: 0; box-shadow: none; max-width: none; }
  .nav-dd-col { min-width: 0; }
  .nav-dd-cat, .nav-dd-sub { min-height: 44px; display: flex; align-items: center; }
  .hero { min-height: 66svh; }
  .contact-wrap { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 767px) {
  .container { padding-inline: 16px; }
  .logo img { height: 40px; }
  .hero { min-height: 72svh; padding-block: 48px; text-align: center; background-position: 58% center; }
  .hero::before { background: linear-gradient(180deg, rgba(15, 23, 42, .62), rgba(15, 23, 42, .48)); }
  .hero-inner { margin: 0 auto; padding-inline: 16px; }
  .hero-title {
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
  text-shadow: 0 2px 8px rgba(0,0,0,0.3); font-size: clamp(30px, 9vw, 38px); }
  .hero-subtitle { font-size: 16px; margin-inline: auto; }
  .hero-actions { flex-direction: column; align-items: stretch; gap: 10px; }
  .hero-actions .btn { width: 100%; }
  .section { padding-block: 52px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .stat { padding: 20px 10px; }
  .stat-num { font-size: 28px; }
  .split { gap: 24px; }
  .split-img { min-height: 180px; }
  .prod-cat-head { align-items: flex-start; }
  .prod-cat-title { font-size: 21px; }
  .btn-catalog { min-height: 44px; }
  .cert-strip { gap: 18px; }
  .cert-strip img { height: 120px; max-width: calc(50vw - 26px); }
  .carousel-wrapper { margin-inline: -4px; }
  .carousel-card { flex-basis: min(78vw, 260px); }
  .carousel-btn { width: 40px; height: 40px; }
  .carousel-track { gap: 14px; padding-inline: 2px; }
  .contact-form { max-width: 640px; margin-inline: auto; }
  .contact-form input, .contact-form textarea { font-size: 16px; }
  .contact-form .btn { width: 100%; }
  .page-header { padding-block: 48px; }
  .page-header h1 { font-size: 28px; }
  .post-cover { height: 200px; }
  .post-title { font-size: 24px; }
}

@media (max-width: 479px) {
  .nav-menu { padding-inline: 12px; }
  .section-title {
  position: relative;
  position: relative; font-size: 23px; }
  .section-desc { font-size: 14px; }
  .stats { gap: 10px; }
  .stat-label { font-size: 13px; }
  .carousel-btn { display: none; }
  .carousel-track { margin-inline: -16px; padding-inline: 16px; }
}

@keyframes nav-drop-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}


/* ========== 产品详情页样式 ========== */
.pd-page { padding: 32px 0 64px; background: var(--bg-alt); min-height: 60vh; }
.pd-back { margin-bottom: 12px; }
.pd-back a { color: var(--primary); text-decoration: none; font-size: 14px; font-weight: 600; }
.pd-back a:hover { text-decoration: underline; }
.pd-crumb { font-size: 13px; color: var(--text-light); margin-bottom: 20px; }
.pd-crumb a { color: var(--primary); text-decoration: none; }
.pd-crumb a:hover { text-decoration: underline; }
.pd-crumb .sep { margin: 0 8px; color: var(--border); }

.pd-hero {
    display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px;
    background: #fff; border-radius: var(--radius); padding: 28px;
    box-shadow: var(--shadow-sm); margin-bottom: 28px;
}
.pd-gallery { display: flex; flex-direction: column; gap: 12px; }
.pd-main-img {
    aspect-ratio: 4/3; border-radius: var(--radius-sm); overflow: hidden;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%); display: flex; align-items: center; justify-content: center;
}
.pd-main-img img { width: 100%; height: 100%; object-fit: contain; padding: 20px; transition: transform 0.3s ease; }
.pd-main-img:hover img { transform: scale(1.02); }
.pd-main-img .ph { font-size: 72px; opacity: 0.2; display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; }
.pd-thumbs { display: flex; gap: 8px; flex-wrap: wrap; }
.pd-thumb {
    width: 72px; height: 72px; border-radius: var(--radius-sm); overflow: hidden;
    border: 2px solid var(--border); background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%); cursor: pointer; padding: 0;
    transition: all 0.2s;
}
.pd-thumb img { width: 100%; height: 100%; object-fit: contain; padding: 4px; }
.pd-thumb:hover { border-color: var(--primary); }
.pd-thumb.active { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(201,169,97,0.3); }

.pd-info { display: flex; flex-direction: column; }
.pd-title { font-size: 28px; font-weight: 800; color: var(--primary-dark); margin: 0 0 10px; line-height: 1.3; }
.pd-subtitle { font-size: 16px; color: var(--accent-dark); font-weight: 600; margin-bottom: 12px; }
.pd-lead { font-size: 15px; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; }
.pd-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.pd-tags span {
    background: var(--primary-50); color: var(--primary); font-size: 12px;
    padding: 4px 12px; border-radius: 20px; font-weight: 600;
}
.pd-dl-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: auto; }
.pd-dl-btn {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--cta); color: #fff; padding: 10px 18px;
    border-radius: var(--radius-sm); font-size: 13px; font-weight: 700;
    text-decoration: none; transition: all 0.2s;
}
.pd-dl-btn:hover { background: var(--cta-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(232,119,34,0.3); }

.pd-section {
    background: #fff; border-radius: var(--radius); padding: 28px;
    box-shadow: var(--shadow-sm); margin-bottom: 24px;
}
.pd-section h2 {
    font-size: 20px; font-weight: 700; color: var(--primary-dark);
    margin: 0 0 18px; padding-bottom: 12px; border-bottom: 3px solid var(--accent);
    display: inline-block;
}
.pd-body { font-size: 15px; line-height: 1.8; color: var(--text); }
.pd-body p { margin-bottom: 12px; }
.pd-specs { width: 100%; border-collapse: collapse; }
.pd-specs tr { border-bottom: 1px solid var(--border); }
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
.pd-specs tr:last-child { border-bottom: none; }
.pd-specs td { padding: 12px 16px; font-size: 14px; }
.pd-specs .k { font-weight: 600; color: var(--primary); width: 40%; background: var(--bg-alt); }
.pd-specs .v { color: var(--text); }

.pd-app-imgs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.app-img { aspect-ratio: 1; border-radius: var(--radius-sm); overflow: hidden; }
.app-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.app-img:hover img { transform: scale(1.05); }

.pd-related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.pd-rel-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm);
    overflow: hidden; text-decoration: none; color: inherit; transition: all 0.25s;
    display: flex; flex-direction: column;
}
.pd-rel-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--accent); }
.pd-rel-card .card-media { aspect-ratio: 4/3; overflow: hidden; }
.pd-rel-card .card-media img { width: 100%; height: 100%; object-fit: cover; }
.pd-rel-card .card-body { padding: 14px; }
.pd-rel-card .card-name { font-size: 14px; font-weight: 600; color: var(--text); }

.pd-empty { text-align: center; padding: 80px 20px; color: var(--text-light); font-size: 16px; }
.pd-empty a { color: var(--primary); text-decoration: none; font-weight: 600; }

@media (max-width: 900px) {
    .pd-hero { grid-template-columns: 1fr; }
    .pd-app-imgs { grid-template-columns: repeat(2, 1fr); }
    .pd-related-grid { grid-template-columns: 1fr; }
}


/* ===== Homepage Hero Enhancement ===== */
.hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0f2b46 0%, #1a3a5c 40%, #1e4a6e 70%, #0f2b46 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(201, 169, 97, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(232, 119, 34, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 60% 80%, rgba(201, 169, 97, 0.05) 0%, transparent 45%);
  pointer-events: none;
}

.hero-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 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='%23c9a961' fill-opacity='0.03'%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");
  opacity: 0.5;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding-block: 80px 100px;
  padding-inline: clamp(16px, 3vw, 28px);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(201, 169, 97, 0.12);
  border: 1px solid rgba(201, 169, 97, 0.3);
  border-radius: 50px;
  color: #c9a961;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 28px;
  backdrop-filter: blur(4px);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: #c9a961;
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  color: #ffffff;
  margin-bottom: 20px;
  max-width: 720px;
  letter-spacing: -0.5px;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 36px;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.hero-actions .btn-primary {
  background: linear-gradient(135deg, #e87722 0%, #d4661a 100%);
  color: #fff;
  padding: 14px 32px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 16px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(232, 119, 34, 0.3);
  text-decoration: none;
  display: inline-block;
}

.hero-actions .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(232, 119, 34, 0.45);
}

.hero-actions .btn-ghost {
  background: transparent;
  color: #c9a961;
  padding: 14px 32px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 16px;
  border: 2px solid #c9a961;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.hero-actions .btn-ghost:hover {
  background: rgba(201, 169, 97, 0.1);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  padding: 0 32px;
}

.hero-stat:first-child {
  padding-left: 0;
}

.hero-stat-num {
  font-size: 32px;
  font-weight: 700;
  color: #c9a961;
  line-height: 1.2;
  margin-bottom: 4px;
}

.hero-stat-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(201, 169, 97, 0.25);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  z-index: 2;
}

.hero-scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid rgba(201, 169, 97, 0.5);
  border-radius: 12px;
  position: relative;
}

.hero-scroll-mouse::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: #c9a961;
  border-radius: 2px;
  animation: scroll-wheel 1.8s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0% { opacity: 1; top: 6px; }
  100% { opacity: 0; top: 18px; }
}

.hero-scroll-text {
  font-size: 11px;
  color: rgba(201, 169, 97, 0.6);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* ===== Featured Products Enhancement ===== */
#featuredProducts {
  padding: 80px 0;
}

#featuredProducts .section-title {
  text-align: center;
}

#featuredProducts .section-desc {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}

.carousel-card {
  transition: all 0.3s ease;
}

.carousel-card:hover {
  transform: translateY(-6px);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero {
    min-height: auto;
  }
  
  .hero-inner {
    padding-block: 60px 80px;
    padding-inline: clamp(16px, 3vw, 28px);
  }
  
  .hero-title {
    font-size: 34px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .hero-stats {
    gap: 24px;
  }
  
  .hero-stat {
    padding: 0;
    min-width: 100px;
  }
  
  .hero-stat-divider {
    display: none;
  }
  
  .hero-stat-num {
    font-size: 26px;
  }
}

@media (max-width: 520px) {
  .hero-title {
    font-size: 28px;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-actions .btn-primary,
  .hero-actions .btn-ghost {
    text-align: center;
  }
  
  .hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  
  .hero-stat {
    text-align: center;
  }
}


/* ===== Fixed Navbar Responsive ===== */
@media (max-width: 900px) {
  body {
    padding-top: 110px;
  }
}

@media (max-width: 520px) {
  body {
    padding-top: 100px;
  }
  .nav-top {
    display: none;
  }
}

/* ===== Contact Page Enhancement ===== */
.contact-info {
  background: #fff;
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}

.contact-company {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 2px solid #f0f0f0;
}

.contact-company h3 {
  font-size: 24px;
  font-weight: 700;
  color: #1a3a5c;
  margin: 0 0 6px 0;
}

.contact-company-sub {
  font-size: 14px;
  color: #6b7280;
  margin: 0;
}

.contact-person-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: linear-gradient(135deg, #1a3a5c 0%, #0f2b46 100%);
  border-radius: 10px;
  padding: 18px 20px;
  margin-bottom: 24px;
}

.contact-person-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, #c9a961 0%, #b8943f 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  flex-shrink: 0;
}

.contact-person-info {
  flex: 1;
}

.contact-person-name {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 2px 0;
}

.contact-person-title {
  font-size: 13px;
  color: #c9a961;
  margin: 0;
}

.contact-detail-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px;
  border-radius: 8px;
  transition: background 0.2s ease;
}

.contact-detail-item:hover {
  background: #f8f9fa;
}

.contact-detail-icon {
  font-size: 20px;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f0f4f8;
  border-radius: 8px;
}

.contact-detail-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-detail-label {
  font-size: 12px;
  color: #9ca3af;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
}

.contact-detail-value {
  font-size: 15px;
  color: #1f2937;
  font-weight: 500;
  text-decoration: none;
  line-height: 1.5;
}

a.contact-detail-value:hover {
  color: #e87722;
}

.contact-form {
  background: #fff;
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  font-size: 15px;
  margin-bottom: 16px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  font-family: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: #1a3a5c;
  box-shadow: 0 0 0 3px rgba(26, 58, 92, 0.1);
}

.contact-form .btn-primary {
  width: 100%;
  padding: 14px;
  font-size: 16px;
}

@media (max-width: 768px) {
  .contact-info,
  .contact-form {
    padding: 24px 20px;
  }
  
  .contact-person-card {
    padding: 16px;
  }
}


/* ===== Fixed Navbar Scroll Offset Fix ===== */
/* 锚点跳转时避免被fixed导航栏遮住 */
section[id], 
div[id], 
[id] {
  scroll-margin-top: 140px;
}

/* 确保hero区域不被导航栏遮住 */
.hero {
  margin-top: 0;
  padding-top: clamp(80px, 12vh, 120px);
}

/* 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 响应式调整 */
@media (max-width: 1024px) {
  section[id], 
  div[id], 
  [id] {
    scroll-margin-top: 115px;
  }
}

@media (max-width: 768px) {
  section[id], 
  div[id], 
  [id] {
    scroll-margin-top: 105px;
  }
  .hero {
    padding-top: 60px;
  }
}


/* ===== Related Products Cards (Article Footer) ===== */
.related-products-section {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 2px solid #f0f0f0;
}
.related-products-title {
  font-size: 22px;
  font-weight: 700;
  color: #1a3a5c;
  margin: 0 0 24px 0;
  position: relative;
  padding-bottom: 12px;
}
.related-products-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background: #c9a961;
  border-radius: 2px;
}
.related-products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.related-product-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.related-product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}
.rpc-link {
  text-decoration: none;
  color: inherit;
  display: block;
}
.rpc-image {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #f8f9fa;
}
.rpc-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.3s ease;
}
.related-product-card:hover .rpc-image img {
  transform: scale(1.05);
}
.rpc-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #9ca3af;
  font-size: 14px;
}
.rpc-info {
  padding: 16px;
}
.rpc-title {
  font-size: 14px;
  font-weight: 600;
  color: #1f2937;
  margin: 0 0 10px 0;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.rpc-btn {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: #e87722;
  transition: color 0.2s ease;
}
.related-product-card:hover .rpc-btn {
  color: #d4661a;
}
.rpc-loading {
  padding: 40px 16px;
  text-align: center;
  color: #9ca3af;
  font-size: 14px;
}
@media (max-width: 768px) {
  .related-products-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .related-products-title {
    font-size: 18px;
  }
}



/* Hero layout - 响应式设计 */
.hero {
  position: relative;
  overflow: hidden;
  background: #0f2b46;
  display: flex;
  width: 100%;
}

/* 左侧文字区域 */
.hero-left {
  flex: 1;
  position: relative;
  z-index: 2;
  background: linear-gradient(135deg, #0f2b46 0%, #1a3a5c 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 60px 40px 90px 60px;
}

/* 右侧图片区域 */
.hero-right {
  flex: 1;
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.hero-scene {
  position: absolute;
  right: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-scene-img {
  position: absolute;
  right: 0;
  top: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.6s ease-in-out;
}

.hero-scene-img.active {
  opacity: 1;
}

/* 文字内容 */
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 480px;
}

/* 底部分类标签 */
.hero-categories {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 3;
  display: flex;
  background: rgba(15, 43, 70, 1);
  border-top: 1px solid rgba(201, 169, 97, 0.3);
  height: 65px;
}

.hero-category {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 20px;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s ease;
  border-right: 1px solid rgba(201, 169, 97, 0.15);
}

.hero-category:last-child {
  border-right: none;
}

.hero-category svg {
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.hero-category:hover,
.hero-category.active {
  background: rgba(201, 169, 97, 0.1);
  color: #c9a961;
}

.hero-category:hover svg,
.hero-category.active svg {
  color: #c9a961;
}

/* 隐藏不需要的元素 */
.hero-scroll-indicator,
.hero-bg-overlay {
  display: none !important;
}

/* Hero stats - 2行3列布局 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 20px 40px;
  margin-top: 35px;
  max-width: 480px;
  justify-content: start;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-start;
  text-align: left;
}

.hero-stat-num {
  font-size: 28px;
  font-weight: 700;
  color: #c9a961;
  line-height: 1;
}

.hero-stat-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.75);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1.3;
}

.hero-stat-divider {
  display: none !important;
}

/* 平板端（768px - 1024px） */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    min-height: 480px;
  }
  
  .hero-left {
    width: 100%;
    padding: 30px 30px 80px;
    background: linear-gradient(180deg, rgba(15, 43, 70, 0.85) 0%, rgba(26, 58, 92, 0.92) 100%);
    z-index: 2;
  }
  
  .hero-right {
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    opacity: 0.5;
    z-index: 1;
  }
  
  .hero-inner {
    max-width: 100%;
  }
  
  .hero-title {
    font-size: 32px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .hero-category span {
    font-size: 13px;
  }
  
  .hero-category {
    padding: 0 15px;
  }
}

/* 手机端（<768px） */
@media (max-width: 768px) {
  .hero {
    min-height: 500px;
  }
  
  .hero-left {
    padding: 35px 20px 85px;
  }
  
  .hero-title {
    font-size: 24px;
    line-height: 1.3;
  }
  
  .hero-subtitle {
    font-size: 14px;
    line-height: 1.5;
  }
  
  .hero-actions {
    margin-top: 20px;
  }
  
  .hero-badge {
    font-size: 12px;
    margin-bottom: 16px;
  }
  
  .hero-stats {
    display: grid !important;
    grid-template-columns: repeat(3, auto);
    gap: 12px 18px;
    margin-top: 20px;
    max-width: 100%;
    justify-content: start;
  }
  
  .hero-stat-num {
    font-size: 20px;
  }
  
  .hero-stat-label {
    font-size: 10px;
  }
  
  .hero-stat-divider {
    display: none;
  }
  
  .hero-categories {
    height: 55px;
  }
  
  .hero-category span {
    display: none;
  }
  
  .hero-category {
    padding: 0;
  }
}

/* 小屏手机（<480px） */
@media (max-width: 480px) {
  .hero {
    min-height: 380px;
  }
  
  .hero-left {
    padding: 25px 15px 75px;
  }
  
  .hero-title {
    font-size: 20px;
  }
  
  .hero-subtitle {
    font-size: 13px;
  }
  
  .hero-badge {
    font-size: 11px;
    padding: 6px 12px;
  }
  
  .hero-categories {
    height: 50px;
  }
}



/* 移动端优化 - 隐藏stats，减少高度 */
@media (max-width: 768px) {
  .hero-stats {
    display: grid !important;
    grid-template-columns: repeat(3, auto);
    gap: 12px 18px;
    margin-top: 20px;
    max-width: 100%;
    justify-content: start;
  }
  
  .hero-stat-num {
    font-size: 20px;
  }
  
  .hero-stat-label {
    font-size: 10px;
  }
  
  .hero-stat-divider {
    display: none;
  }
  
  .hero-left {
    padding: 30px 20px 70px !important;
  }
  
  .hero-title {
    font-size: 24px !important;
    line-height: 1.3 !important;
  }
  
  .hero-subtitle {
    font-size: 14px !important;
    line-height: 1.5 !important;
  }
  
  .hero-actions {
    margin-top: 20px !important;
  }
  
  .hero-badge {
    font-size: 12px !important;
    margin-bottom: 16px !important;
  }
}

/* ========== 统一4列卡片区域 ========== */
.section-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

@media (max-width: 1024px) {
  .section-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .section-grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Blog卡片统一样式 */
.app-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  transition: transform 0.3s, box-shadow 0.3s;
}

.app-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.app-card-img {
  height: 180px;
  overflow: hidden;
}

.app-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.app-card:hover .app-card-img img {
  transform: scale(1.05);
}

.app-card-body {
  padding: 20px;
}

.app-card-tag {
  display: inline-block;
  padding: 4px 10px;
  background: #e8f4f8;
  color: #1a3a5c;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 12px;
}

.app-card-body h4 {
  font-size: 18px;
  font-weight: 600;
  color: #1a3a5c;
  margin: 0 0 12px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.app-card-body p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
  margin: 0 0 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.app-card-link {
  font-size: 14px;
  color: #e87722;
  font-weight: 500;
  text-decoration: none;
}

/* Certifications卡片样式 */
.cert-card {
  background: #fff;
  border-radius: 12px;
  padding: 30px 20px;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  transition: transform 0.3s, box-shadow 0.3s;
  text-decoration: none;
  display: block;
}

.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.cert-card img {
  height: 80px;
  object-fit: contain;
  margin-bottom: 12px;
}

.cert-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: #1a3a5c;
  margin: 0;
}


/* ========== 移动端Banner高度强制设置 ========== */
@media (max-width: 768px) {
  .hero {
    min-height: 650px !important;
    height: 650px !important;
    overflow: hidden;
    padding: 0 !important;
  }
  
  .hero-left {
    padding: 20px 20px 60px !important;
  }
  
  .hero-title {
    font-size: 22px !important;
    margin-bottom: 10px !important;
  }
  
  .hero-subtitle {
    font-size: 13px !important;
    line-height: 1.4 !important;
  }
  
  .hero-actions {
    margin-top: 12px !important;
    gap: 8px !important;
  }
  
  .btn {
    padding: 10px 20px !important;
    font-size: 14px !important;
  }
  
  .hero-stats {
    margin-top: 15px !important;
    gap: 10px 15px !important;
  }
  
  .hero-stat-num {
    font-size: 18px !important;
  }
  
  .hero-stat-label {
    font-size: 9px !important;
  }
  
  .hero-badge {
    margin-bottom: 12px !important;
    font-size: 12px !important;
    padding: 6px 12px !important;
  }
}