/* ============================================
   德洛斯照明 - 明亮现代风格 (Premium v4)
   参照固德威风格：明亮、留白、精致渐变
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Oswald:wght@300;400;500;600;700&display=swap');

:root {
  /* 明亮配色 */
  --bg-bright: #FFFFFF;
  --bg-soft: #F7F9FC;
  --bg-gradient: linear-gradient(135deg, #F7F9FC 0%, #EBF2FA 100%);
  --blue-primary: #47809A;
  --blue-bright: #47809A;
  --blue-light: #6BA0BA;
  --blue-pale: #EBF2FA;
  --blue-accent: #8BB8D0;

  /* 文字颜色加深（提升对比度，确保 WCAG AA 达标） */
  --text-muted: #5A6B7E;
  --text-light: #7A8B9C;

  /* 高级缓动 */
  --ease-premium: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);

  /* 柔和阴影 */
  --shadow-soft: 0 2px 12px rgba(71, 128, 154, 0.04), 0 1px 3px rgba(71, 128, 154, 0.03);
  --shadow-card: 0 4px 24px rgba(71, 128, 154, 0.06), 0 1px 4px rgba(71, 128, 154, 0.04);
  --shadow-hover: 0 16px 48px rgba(71, 128, 154, 0.12), 0 4px 12px rgba(71, 128, 154, 0.06);
  --shadow-glow: 0 8px 32px rgba(71, 128, 154, 0.15);

  /* 玻璃态 */
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(255, 255, 255, 0.5);
}

/* ===== 全局：防止横向滚动条 =====
   使用 clip 而非 hidden：hidden 会把 html/body 变成滚动容器，导致
   position:sticky 失效（如产品页左侧分类导航不悬浮）。clip 同样隐藏
   横向溢出，但不创建滚动容器，不破坏 sticky。 */
html, body {
  overflow-x: clip;
  max-width: 100%;
}

/* ===== 全局明亮化 ===== */
body {
  font-family: "Inter", "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif !important;
  background: #FFFFFF !important;
  color: #1A2B45 !important;
  letter-spacing: 0.005em !important;
  font-size: 16px !important;
  line-height: 1.8 !important;
}

/* ===== 全文改善可读性 ===== */
.section-desc, .focus-content p, .about-text p, .rd-text p,
.home-cat-desc, .home-cat-subs {
  font-size: 16px !important;
  line-height: 1.9 !important;
  color: #2A3B4D !important;
}

/* 描述文字 - 更深，确保可读 */
.product-card-desc,
.home-cat-product-desc,
.product-list-card-desc,
.news-card-summary,
.case-card-desc,
.news-list-item-summary,
.footer-brand p {
  color: #4A5B6E !important;
  font-size: 14px !important;
  line-height: 1.7 !important;
}

/* 标签文字 - 加深 */
.section-index-total,
.rd-param-label,
.footer-contact-label,
.footer-cert,
.breadcrumb,
.breadcrumb a,
.news-card-date,
.news-list-item-date {
  color: #6A7B8C !important;
}

/* 页脚底部版权 */
.footer-bottom {
  color: #6A7B8C !important;
}

/* ===== 滚动进度条 ===== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #47809A 0%, #47809A 50%, #6BA0BA 100%);
  z-index: 9999;
  width: 0;
  transition: width 0.1s linear;
  box-shadow: 0 0 16px rgba(30, 91, 184, 0.5);
}

/* ===== 导航栏（明亮玻璃态） ===== */
.navbar {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(226, 234, 242, 0.6);
  transition: all 0.4s var(--ease-premium) !important;
}

body.nav-scrolled .navbar {
  background: rgba(255, 255, 255, 0.98) !important;
  box-shadow: 0 1px 0 rgba(226, 234, 242, 0.8), 0 4px 24px -8px rgba(30, 91, 184, 0.08) !important;
}

.navbar-menu a {
  color: #4A5A6E !important;
  font-weight: 500 !important;
  position: relative;
  transition: color 0.3s var(--ease-premium) !important;
}

.navbar-menu a:hover,
.navbar-menu a.active {
  color: #47809A !important;
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #47809A, #6BA0BA);
  transition: all 0.4s var(--ease-premium);
  transform: translateX(-50%);
  border-radius: 2px;
}

.navbar-menu a:hover::after,
.navbar-menu a.active::after {
  width: 100%;
}

/* ===== 顶部信息条 ===== */
.topbar {
  background: linear-gradient(90deg, #0E3A6F 0%, #47809A 100%) !important;
  color: rgba(255, 255, 255, 0.9) !important;
}

.topbar a {
  color: #FFFFFF !important;
}

/* ===== Banner 明亮增强 ===== */
.banner {
  background: linear-gradient(135deg, #0A2540 0%, #0E3A6F 100%) !important;
}

.banner-slide img {
  transform: scale(1.05);
  transition: transform 8s var(--ease-out-expo), opacity 1.4s var(--ease-premium) !important;
  animation: none !important;
}

.banner-slide.active img {
  transform: scale(1.15);
}

.banner-content-inner {
  max-width: 1200px !important;
  padding: 0 60px !important;
}

.banner-title {
  font-family: "Inter", var(--font-serif) !important;
  font-weight: 800 !important;
  font-size: clamp(36px, 5.5vw, 68px) !important;
  letter-spacing: -0.02em !important;
  line-height: 1.1 !important;
  color: #FFFFFF !important;
  text-shadow: 0 2px 16px rgba(0,0,0,0.55), 0 1px 4px rgba(0,0,0,0.75), 0 0 30px rgba(0,0,0,0.3) !important;
}

.banner-subtitle {
  font-weight: 300 !important;
  letter-spacing: 0.08em !important;
  color: rgba(255, 255, 255, 0.95) !important;
  text-shadow: 0 2px 16px rgba(0,0,0,0.55), 0 1px 4px rgba(0,0,0,0.75);
}

.banner-dot {
  width: 32px !important;
  height: 3px !important;
  background: rgba(255, 255, 255, 0.4) !important;
  border-radius: 2px !important;
  transition: all 0.5s var(--ease-premium) !important;
}

.banner-dot.active {
  width: 72px !important;
  background: linear-gradient(90deg, #FFFFFF, #6BA0BA) !important;
}

.banner-gold-bar {
  background: linear-gradient(90deg, transparent 0%, #47809A 50%, transparent 100%) !important;
  height: 1px !important;
  opacity: 0.5 !important;
}

/* ===== Section 明亮化（增强层次感） ===== */
.section {
  background: #FFFFFF !important;
  padding: 80px 0 !important;
  position: relative;
}
/* 细微斜线纹理背景 */
.section::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background-image: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 40px,
    rgba(30,91,184,0.012) 40px,
    rgba(30,91,184,0.012) 41px
  );
  pointer-events: none;
  z-index: 0;
}
/* 版块左侧竖向装饰线 */
.section > .container::before {
  content: '';
  position: absolute; top: 10%; bottom: 10%; left: 8px;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(30,91,184,0.08) 30%, rgba(30,91,184,0.08) 70%, transparent);
  pointer-events: none;
  z-index: 0;
}
/* 版块顶部3px蓝色渐变装饰条 */
.section::before {
  content: '';
  position: absolute; top: 0; left: 5%; right: 5%;
  height: 3px;
  background: linear-gradient(90deg, transparent 5%, rgba(30,91,184,0.12) 30%, rgba(30,91,184,0.20) 50%, rgba(30,91,184,0.12) 70%, transparent 95%);
  pointer-events: none;
  z-index: 1;
  border-radius: 2px;
}
/* 首版块顶部装饰光晕（在蓝条上方） */
.banner + .section::after,
.page-banner-img + .section::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 80px;
  background: linear-gradient(180deg, rgba(14,58,111,0.04) 0%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}
/* 版块之间细微内阴影过渡 */
.section + .section {
  box-shadow: inset 0 3px 8px -4px rgba(14,58,111,0.04);
}
/* 最后一个section去掉装饰 */
.section:last-of-type::before { display: none; }

/* 偶数版块 - 浅灰渐变背景 + 淡蓝装饰条 */
.section:nth-child(even) {
  background: linear-gradient(180deg, #f7f9fc 0%, #f4f7fb 100%) !important;
}
.section:nth-child(even)::before {
  background: linear-gradient(90deg, transparent 5%, rgba(30,91,184,0.08) 30%, rgba(30,91,184,0.14) 50%, rgba(30,91,184,0.08) 70%, transparent 95%);
  height: 2px;
}

.section-header {
  text-align: center;
  margin-bottom: 48px !important;
}

.section-title {
  font-family: "Inter", var(--font-serif) !important;
  font-weight: 800 !important;
  font-size: clamp(28px, 3.5vw, 42px) !important;
  letter-spacing: -0.02em !important;
  color: #0F1B2D !important;
  background: none !important;
  -webkit-text-fill-color: #0F1B2D !important;
  margin-bottom: 16px !important;
}

.section-label {
  color: #47809A !important;
  font-weight: 600 !important;
  letter-spacing: 0.3em !important;
  font-size: 12px !important;
  text-transform: uppercase;
  display: inline-flex !important;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px !important;
  position: relative;
}
/* 标签两侧装饰线（高端编辑排版风格） */
.section-label::before,
.section-label::after {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background: rgba(46,125,224,0.3);
}
.section-label::after {
  background: rgba(46,125,224,0.3);
}
/* 首页标题区增加背景细线装饰 */
.section-header {
  position: relative;
}
.section-header::before {
  content: '';
  position: absolute; top: 50%; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 15%, rgba(46,125,224,0.06) 30%, rgba(46,125,224,0.06) 70%, transparent 85%);
  pointer-events: none;
  transform: translateY(-20px);
}

.section-index {
  color: #47809A !important;
}

.section-desc {
  color: #4A5A6E !important;
  font-size: 16px !important;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ===== 卡片（shadcn/ui 风格） ===== */
.home-cat-block {
  background: #FFFFFF !important;
  border-radius: 12px !important;
  padding: 28px !important;
  border: 1px solid var(--border, #E2EAF2) !important;
  transition: border-color var(--transition, 0.2s ease), box-shadow var(--transition, 0.2s ease) !important;
}

.home-cat-block:hover {
  border-color: var(--accent, #47809A) !important;
  box-shadow: 0 4px 20px rgba(30,91,184,0.06) !important;
}

.home-cat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--bg-soft);
}

.home-cat-name {
  font-size: 22px !important;
  font-weight: 700 !important;
  color: #0F1B2D !important;
  margin: 0 !important;
}

.home-cat-link {
  color: #47809A !important;
  font-size: 14px !important;
  font-weight: 500 !important;
  transition: all 0.3s var(--ease-premium) !important;
}

.home-cat-link:hover {
  color: #47809A !important;
  transform: translateX(4px);
}

.home-cat-desc,
.home-cat-subs {
  color: #4A5A6E !important;
  line-height: 1.7 !important;
  margin-bottom: 12px !important;
}

/* ===== 产品卡片（shadcn/ui 风格） ===== */
.home-cat-product {
  background: #FFFFFF !important;
  border-radius: 10px !important;
  overflow: hidden;
  transition: border-color var(--transition, 0.2s ease), box-shadow var(--transition, 0.2s ease) !important;
  border: 1px solid var(--border, #E2EAF2) !important;
  text-decoration: none !important;
}

.home-cat-product:hover {
  border-color: var(--accent, #47809A) !important;
  box-shadow: 0 4px 20px rgba(30,91,184,0.06) !important;
}

.home-cat-product-img {
  background: var(--bg-soft) !important;
  overflow: hidden;
}

.home-cat-product-img img {
  transition: transform 0.8s var(--ease-out-expo) !important;
}

.home-cat-product:hover .home-cat-product-img img {
  transform: scale(1.1);
}

.home-cat-product-info {
  padding: 16px !important;
}

.home-cat-product-model {
  font-weight: 700 !important;
  color: #0F1B2D !important;
  font-size: 15px !important;
  margin-bottom: 4px !important;
}

.home-cat-product-desc {
  color: #5A6B7E !important;
  font-size: 13px !important;
}

/* 首页关于我们 - 白色背景 */
#about-preview.stats-section {
  background: #FFFFFF !important;
  padding: 100px 0 !important;
}

#about-preview.stats-section::before,
#about-preview.stats-section::after {
  display: none !important;
}

#about-preview .section-title {
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF !important;
}

#about-preview .section-label {
  color: #6BA9C2 !important;
}

#about-preview .section-desc {
  color: rgba(255,255,255,0.82) !important;
}

#products-preview .section-title {
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF !important;
}

#products-preview .section-desc {
  color: rgba(255,255,255,0.82) !important;
}

#news-preview .section-title {
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF !important;
}

#news-preview .section-desc {
  color: rgba(255,255,255,0.82) !important;
}

#about-preview .about-preview-text p {
  color: #2A3B4D !important;
  font-size: 15px !important;
  line-height: 2 !important;
}

/* 关于我们-图片阴影 */
#about-preview .about-preview-img {
  box-shadow: 0 8px 32px rgba(10, 31, 61, 0.1) !important;
}

/* 数据统计行 */
#about-preview .about-stats-row {
  background: #F2F6FB !important;
  border-radius: 12px !important;
  padding: 32px 20px !important;
}

#about-preview .about-stat-num {
  color: #47809A !important;
  -webkit-text-fill-color: #47809A !important;
  background: none !important;
}

#about-preview .about-stat-label {
  color: #4A5A6E !important;
}

/* 工程业绩 */
#about-preview .about-engineering {
  border-top-color: #E2EAF2 !important;
}

#about-preview .about-engineering-num {
  color: #47809A !important;
  font-weight: 700 !important;
}

#about-preview .about-engineering-num span {
  color: #47809A !important;
}

#about-preview .about-engineering-item > span:last-child {
  color: #4A5A6E !important;
  font-size: 14px !important;
}

#about-preview .about-preview-text {
  color: #1A2B45 !important;
}

/* ===== 其他页面的统计区块（保持深蓝） ===== */
.stats-section:not(#about-preview) {
  background: linear-gradient(135deg, #0E3A6F 0%, #47809A 50%, #47809A 100%) !important;
  position: relative;
  overflow: hidden;
}

.stats-section:not(#about-preview)::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(91, 155, 232, 0.15) 0%, transparent 40%);
  pointer-events: none;
}

.stats-section:not(#about-preview)::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
}

.stats-section:not(#about-preview) .section-title {
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF !important;
}

.stats-section:not(#about-preview) .section-label {
  color: rgba(255, 255, 255, 0.85) !important;
}

.stat-number,
.about-stat-num {
  font-family: "Oswald", var(--font-metric) !important;
  font-weight: 700 !important;
  color: #47809A !important;
  -webkit-text-fill-color: #47809A !important;
  background: none !important;
  -webkit-background-clip: border-box !important;
  background-clip: border-box !important;
  letter-spacing: -0.02em !important;
}

.stats-section .stat-number,
.stats-section .about-stat-num {
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF !important;
  background: none !important;
  -webkit-background-clip: border-box !important;
  background-clip: border-box !important;
}

.about-stat-label {
  color: #5A6B7E !important;
  font-size: 14px !important;
  letter-spacing: 0.05em;
}

.about-engineering-item span:last-child {
  color: #5A6B7E !important;
}

.about-preview-text {
  color: #1A2B45 !important;
}

.about-preview-text p {
  color: #4A5B6E !important;
  line-height: 1.9 !important;
}

/* ===== 按钮风格 ===== */
.btn-outline {
  display: inline-block;
  padding: 14px 36px !important;
  border: 2px solid #47809A !important;
  color: #47809A !important;
  border-radius: 50px !important;
  font-weight: 600 !important;
  letter-spacing: 0.05em !important;
  font-size: 14px !important;
  text-decoration: none !important;
  transition: all 0.4s var(--ease-premium) !important;
  position: relative;
  overflow: hidden;
  background: transparent;
}

.btn-outline::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #47809A, #47809A);
  transition: left 0.4s var(--ease-premium);
  z-index: 0;
}

.btn-outline:hover {
  color: #FFFFFF !important;
  border-color: #47809A !important;
  transform: translateY(-3px) !important;
  box-shadow: 0 12px 28px -4px rgba(30, 91, 184, 0.4) !important;
}

.btn-outline:hover::before {
  left: 0;
}

.btn-outline > * {
  position: relative;
  z-index: 1;
}

/* stats-section 内的按钮反白 */
.stats-section .btn-outline {
  border-color: rgba(255, 255, 255, 0.6) !important;
  color: #FFFFFF !important;
}

.stats-section .btn-outline::before {
  background: linear-gradient(90deg, #FFFFFF, #6BA0BA);
}

.stats-section .btn-outline:hover {
  color: #47809A !important;
  border-color: #FFFFFF !important;
}

/* ===== 新闻卡片 ===== */
.news-card {
  background: #FFFFFF !important;
  border-radius: 10px !important;
  overflow: hidden;
  border: 1px solid var(--border, #E2EAF2) !important;
  transition: border-color var(--transition, 0.2s ease), box-shadow var(--transition, 0.2s ease) !important;
  text-decoration: none !important;
}

.news-card:hover {
  border-color: var(--accent, #47809A) !important;
  box-shadow: 0 4px 20px rgba(30,91,184,0.06) !important;
}

.news-card-img {
  overflow: hidden;
  position: relative;
  height: 160px !important;
}

.news-card-img img {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
  transition: transform 0.8s var(--ease-out-expo) !important;
}

.news-card:hover .news-card-img img {
  transform: scale(1.08);
}

.news-card-body {
  padding: 24px !important;
}

.news-card-date {
  color: #47809A !important;
  font-size: 13px !important;
  font-weight: 500 !important;
  letter-spacing: 0.05em;
  margin-bottom: 8px !important;
}

.news-card-title {
  font-size: 18px !important;
  font-weight: 700 !important;
  color: #0F1B2D !important;
  margin-bottom: 12px !important;
  line-height: 1.5 !important;
  transition: color 0.3s var(--ease-premium) !important;
}

.news-card:hover .news-card-title {
  color: #47809A !important;
}

.news-card-summary {
  color: #4A5A6E !important;
  font-size: 14px !important;
  line-height: 1.7 !important;
  margin-bottom: 16px !important;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-more {
  color: #47809A !important;
  font-weight: 600 !important;
  font-size: 14px !important;
  position: relative;
  display: inline-block;
  transition: all 0.3s var(--ease-premium) !important;
}

.news-card-more::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: #47809A;
  transition: width 0.4s var(--ease-premium);
}

.news-card:hover .news-card-more::after {
  width: 100%;
}

/* ===== 滚动渐入 ===== */
.fade-in {
  opacity: 0 !important;
  transform: translateY(40px) !important;
  transition: opacity 1s var(--ease-premium), transform 1s var(--ease-premium) !important;
}

.fade-in.visible {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* ===== 留言表单 ===== */
.inquiry-form input,
.inquiry-form textarea {
  border: 1px solid #E2EAF2 !important;
  background: #FFFFFF !important;
  border-radius: 8px !important;
  padding: 12px 16px !important;
  transition: all 0.3s var(--ease-premium) !important;
}

.inquiry-form input:focus,
.inquiry-form textarea:focus {
  border-color: #47809A !important;
  box-shadow: 0 0 0 4px rgba(71, 128, 154, 0.1) !important;
}

/* ===== 悬浮按钮 ===== */
.float-contact-btn {
  background: linear-gradient(135deg, #47809A, #47809A) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 16px rgba(30, 91, 184, 0.3) !important;
  transition: all 0.4s var(--ease-premium) !important;
}

.float-contact-btn:hover {
  transform: translateY(-3px) !important;
  box-shadow: 0 12px 28px rgba(30, 91, 184, 0.4) !important;
}

/* ===== 页脚（纯黑） ===== */
.footer {
  background: #000 !important;
  position: relative;
  padding: 28px 0 0 !important;
}

.footer-col h5 {
  position: relative;
  padding-left: 14px;
  font-weight: 700 !important;
  letter-spacing: 0.05em;
  color: #FFFFFF !important;
  font-size: 15px !important;
  margin-bottom: 20px !important;
}

.footer-col h5::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 14px;
  background: linear-gradient(180deg, #47809A, #6BA0BA);
  border-radius: 2px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.75) !important;
  transition: all 0.3s var(--ease-premium) !important;
  display: inline-block;
  padding: 2px 0;
  font-size: 14px !important;
}

.footer-col a:hover {
  color: #6BA0BA !important;
  transform: translateX(4px);
}

.footer-contact-item {
  color: rgba(255, 255, 255, 0.75) !important;
}

.footer-contact-label {
  color: rgba(255, 255, 255, 0.7) !important;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.8) !important;
  font-size: 14px !important;
  line-height: 1.8 !important;
}

.footer-cert {
  border-color: rgba(255, 255, 255, 0.35) !important;
  color: rgba(255, 255, 255, 0.9) !important;
  background: rgba(255, 255, 255, 0.08) !important;
}

.footer-qr span {
  color: rgba(255, 255, 255, 0.75) !important;
}

.footer-qr img {
  border-color: rgba(255, 255, 255, 0.25) !important;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
  padding-top: 20px !important;
  color: rgba(255, 255, 255, 0.65) !important;
  text-align: center;
  font-size: 13px !important;
}

/* ===== 内页 Banner ===== */
.page-banner-img {
  position: relative;
}

.page-banner-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: none !important;
  z-index: 1;
}

.page-banner-img img {
  transform: none;
}

.page-banner-content {
  position: relative;
  z-index: 2;
}

/* 内页 banner 文字阴影增强 */
.page-banner-title {
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3) !important;
}

.page-banner-desc {
  color: rgba(255, 255, 255, 0.9) !important;
  font-size: 17px !important;
}

/* 面包屑 - 加深可读 */
.breadcrumb {
  font-size: 13px !important;
  color: #6A7B8C !important;
  padding: 16px 40px !important;
}

.breadcrumb a {
  color: #6A7B8C !important;
}

.breadcrumb a:hover {
  color: #47809A !important;
}

/* 解决方案卡片遮罩 - 统一为黑色渐变 */
.solution-card-overlay {
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.2) 100%) !important;
}

.solution-card-desc {
  opacity: 1 !important;
  color: rgba(255, 255, 255, 0.85) !important;
}

/* 案例详情遮罩 - 统一为黑色渐变 */
.case-detail-hero-overlay {
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.15) 0%, rgba(0, 0, 0, 0.75) 100%) !important;
}

.case-detail-hero h1 {
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.3) !important;
}

.case-detail-hero p {
  color: rgba(255, 255, 255, 0.9) !important;
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: #F2F6FB;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #47809A, #47809A);
  border-radius: 5px;
  border: 2px solid #F2F6FB;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #6BA0BA, #47809A);
}

::selection {
  background: rgba(71, 128, 154, 0.2);
  color: #0E3A6F;
}

/* ===== 图片懒加载 ===== */
/* 懒加载图片默认显示（避免 JS 失败导致图片不显示） */
img[loading="lazy"] {
  opacity: 1;
  transition: opacity 0.6s var(--ease-premium);
}

img[loading="lazy"].loaded {
  opacity: 1;
}

/* ===== 焦点 ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid #47809A;
  outline-offset: 2px;
  border-radius: 2px;
}

/* ===== 移动端导航栏吸顶响应式 v8.0 ===== */
@media (max-width: 1024px) {
  /* 核心修复：top:0（topbar已隐藏）+ 半透明白底 + 吸顶 */
  .navbar {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    background: rgba(255, 255, 255, 0.92) !important;
    backdrop-filter: saturate(180%) blur(20px) !important;
    -webkit-backdrop-filter: saturate(180%) blur(20px) !important;
    border-bottom: 1px solid rgba(226, 234, 242, 0.4) !important;
  }
  .topbar {
    display: none;
  }
  body.nav-scrolled .navbar {
    background: rgba(255, 255, 255, 0.98) !important;
    box-shadow: 0 2px 16px rgba(14, 58, 111, 0.12) !important;
  }
  /* 首页：半透明白底（能看到 banner 但不至于完全不可见） */
  body.homepage .navbar {
    background: rgba(255, 255, 255, 0.55) !important;
    backdrop-filter: saturate(180%) blur(16px) !important;
    -webkit-backdrop-filter: saturate(180%) blur(16px) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3) !important;
  }
  body.homepage.nav-scrolled .navbar {
    background: rgba(255, 255, 255, 0.95) !important;
  }
  /* 移动端非首页页面 body 顶部间距（导航栏固定高度72px） */
  body:not(.homepage) {
    padding-top: 72px !important;
  }
  /* 移动端导航栏内部布局：紧凑排列 */
  .navbar-inner {
    height: 56px !important;
    padding: 0 16px !important;
    gap: 16px !important;
  }
  .navbar-logo-img {
    height: 36px !important;
    max-width: 140px !important;
  }
  .navbar-cta {
    padding: 8px 16px !important;
    font-size: 12px !important;
    border-radius: 16px !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
  }
}

/* ===== 产品规格富文本内容样式美化 v8.1 ===== */
.paa-feature-content h3 {
  font-size: 18px !important;
  color: #0E3A6F !important;
  font-weight: 700 !important;
  margin: 24px 0 16px !important;
  padding-bottom: 8px !important;
  border-bottom: 2px solid #E2EAF2 !important;
  letter-spacing: -0.3px !important;
}

.paa-feature-content h3:first-child {
  margin-top: 0 !important;
}

.paa-feature-content table {
  width: 100% !important;
  border-collapse: collapse !important;
  margin: 12px 0 20px !important;
  font-size: 13px !important;
  border-radius: 8px !important;
  overflow: hidden !important;
  box-shadow: 0 2px 8px rgba(14, 58, 111, 0.04) !important;
}

.paa-feature-content table th {
  background: #0E3A6F !important;
  color: #fff !important;
  font-weight: 600 !important;
  font-size: 12px !important;
  padding: 11px 16px !important;
  text-align: left !important;
  letter-spacing: 0.02em !important;
  border-right: 1px solid #47809A !important;
  white-space: nowrap !important;
}

.paa-feature-content table th:last-child {
  border-right: none !important;
}

.paa-feature-content table td {
  padding: 10px 16px !important;
  font-size: 13px !important;
  color: #4A5A6E !important;
  border-bottom: 1px solid #EEF2F7 !important;
  border-right: 1px solid #EEF2F7 !important;
}

.paa-feature-content table td:last-child {
  border-right: none !important;
}

.paa-feature-content table tbody tr:nth-child(even) td {
  background: #FAFCFE !important;
}

.paa-feature-content table tbody tr:hover td {
  background: #EEF3FA !important;
}

.paa-feature-content table tbody tr:last-child td {
  border-bottom: none !important;
}

.paa-feature-content ul {
  padding-left: 0 !important;
  list-style: none !important;
  margin: 8px 0 16px !important;
}

.paa-feature-content ul li {
  padding: 7px 0 7px 20px !important;
  position: relative !important;
  font-size: 14px !important;
  line-height: 1.7 !important;
  color: #3A4A60 !important;
  border-bottom: 1px dashed #F0F3F7 !important;
}

.paa-feature-content ul li:last-child {
  border-bottom: none !important;
}

.paa-feature-content ul li::before {
  content: '' !important;
  position: absolute !important;
  left: 0 !important;
  top: 15px !important;
  width: 6px !important;
  height: 6px !important;
  background: #C8A45C !important;
  border-radius: 50% !important;
}

.paa-feature-content strong {
  color: #0E3A6F !important;
  font-weight: 600 !important;
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0 !important;
  }
  .banner-content-inner {
    padding: 0 24px !important;
  }
  .banner-overlay {
    background: none !important;
  }
  .page-banner-img::after {
    background: none !important;
  }
  .banner-bg::after {
    background: none !important;
  }
  .page-banner-gradient-inner .page-banner-gradient-title {
    text-shadow: 0 1px 10px rgba(0,0,0,0.12) !important;
  }
  .page-banner-gradient-inner .page-banner-gradient-desc {
    text-shadow: 0 1px 8px rgba(0,0,0,0.10) !important;
  }
  .page-banner-overlay {
    background: none !important;
  }
  .page-banner-content .page-banner-title {
    text-shadow: 0 1px 10px rgba(0,0,0,0.12) !important;
  }
  .page-banner-content .page-banner-desc {
    text-shadow: 0 1px 8px rgba(0,0,0,0.10) !important;
  }
  .banner-title {
    text-shadow: 0 1px 8px rgba(0,0,0,0.15) !important;
    background: none !important;
    -webkit-text-fill-color: #FFFFFF !important;
    background-clip: unset !important;
  }
  .banner-subtitle {
    text-shadow: 0 1px 6px rgba(0,0,0,0.12) !important;
  }
  .home-cat-block {
    padding: 20px !important;
  }
}

/* 新闻详情深色头部 - 面包屑保持白色 */
.news-detail-header .breadcrumb,
.news-detail-header .breadcrumb a {
  color: rgba(255, 255, 255, 0.7) !important;
}
.news-detail-header .breadcrumb a:hover {
  color: #fff !important;
}

/* article-详情页 meta */
.article-meta {
  color: rgba(255, 255, 255, 0.85) !important;
}

/* ===== 减少动画 ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}


/* ===== Logo 图片 ===== */
.navbar-logo {
  display: flex !important;
  align-items: center !important;
  text-decoration: none !important;
}

.navbar-logo-img {
  height: 48px !important;
  width: auto !important;
  max-width: 200px !important;
  object-fit: contain !important;
  transition: all 0.4s var(--ease-premium) !important;
}

.navbar-logo:hover .navbar-logo-img {
  transform: scale(1.02);
  filter: brightness(1.05);
}

body.nav-scrolled .navbar-logo-img {
  height: 42px !important;
}

@media (max-width: 768px) {
  .navbar-logo-img {
    height: 36px !important;
  }
  body.nav-scrolled .navbar-logo-img {
    height: 32px !important;
  }
}

/* ========== Footer Logo ========== */
.footer-logo-img {
    display: block;
    height: 44px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    margin: 0 0 16px 0;
    opacity: 1;
    transition: opacity 0.3s ease;
}
.footer-logo-img:hover {
    opacity: 0.9;
}
@media (max-width: 768px) {
    .footer-logo-img {
        height: 36px;
        max-width: 140px;
    }
}

/* ===== 移动端图文排版优化 ===== */
@media (max-width: 768px) {
  .banner-title {
    font-size: 28px !important;
    letter-spacing: 0 !important;
  }
  .banner-subtitle {
    font-size: 16px !important;
    letter-spacing: 0.06em !important;
  }
  .section-title {
    font-size: 24px !important;
  }
  .section-desc {
    font-size: 14px !important;
    line-height: 1.8 !important;
  }
  .home-cat-name {
    font-size: 18px !important;
  }
  .product-list-card-name,
  .case-card-title,
  .news-list-item-title {
    font-size: 17px !important;
  }
  .page-banner-title {
    font-size: 26px !important;
  }
  .page-banner-desc {
    font-size: 15px !important;
  }
  .breadcrumb {
    padding: 12px 20px !important;
    font-size: 12px !important;
  }
  .container {
    padding: 0 16px !important;
  }
}

/* ===== 文字溢出与排版保护 ===== */
img {
  max-width: 100%;
  height: auto;
}
h1, h2, h3, h4, h5, h6 {
  word-break: break-word;
  overflow-wrap: break-word;
}
p {
  word-break: break-word;
  overflow-wrap: break-word;
}

/* ===== v5.0 首页产品区块 - 统一高度与排版修复 ===== */

/* 分类网格等高对齐 */
.home-cat-grid {
  align-items: stretch !important;
}

/* 分类卡片 flex 布局，让产品列表填满 */
.home-cat-block {
  display: flex !important;
  flex-direction: column !important;
}

/* 分类标题 - 防止名字长度不一导致错位 */
.home-cat-header {
  flex-wrap: nowrap !important;
  gap: 8px !important;
  align-items: center !important;
}
.home-cat-name {
  flex: 1 1 auto !important;
  min-width: 0 !important;
  white-space: nowrap !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
}
.home-cat-link {
  flex-shrink: 0 !important;
  white-space: nowrap !important;
}

/* 产品列表填满剩余空间 */
.home-cat-products {
  flex: 1 1 auto !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: flex-start !important;
}

/* 产品卡片 - flex 布局，统一结构 */
.home-cat-product {
  display: flex !important;
  flex-direction: column !important;
}

/* 产品图片 - 统一高度 */
.home-cat-product-img {
  height: 140px !important;
  flex-shrink: 0 !important;
}

/* 产品信息区 - 统一最小高度 */
.home-cat-product-info {
  flex: 1 1 auto !important;
  min-height: 88px !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: flex-start !important;
}

/* 产品型号 - 单行显示，防止长度不一导致高度不齐 */
.home-cat-product-model {
  white-space: nowrap !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  line-height: 1.4 !important;
}

/* 产品描述 - 单行显示 */
.home-cat-product-desc {
  white-space: nowrap !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  line-height: 1.5 !important;
}

/* 参数区贴底 */
.home-cat-product-params {
  margin-top: auto !important;
}

/* ===== v5.1 极简白底产品列表模板 ===== */
.product-minimal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.product-minimal-card {
  display: flex;
  flex-direction: column;
  background: #FFFFFF;
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  transition: all 0.3s ease;
  border: 1px solid #f0f0f0;
}
.product-minimal-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  border-color: #e0e0e0;
}
/* 文字信息区 - 在上 */
.product-minimal-info {
  padding: 20px 20px 12px;
  text-align: center;
}
.product-minimal-model {
  font-size: 16px;
  font-weight: 600;
  color: #0F1B2D;
  margin: 0 0 8px;
  letter-spacing: 0.02em;
}
.product-minimal-params {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px 12px;
}
.product-minimal-param {
  font-size: 12px;
  color: #6A7B8C;
  line-height: 1.5;
}
/* 图片区 - 在下，白底融合 */
.product-minimal-img {
  width: 100%;
  height: 220px;
  background: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow: hidden;
}
.product-minimal-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.4s ease;
}
.product-minimal-card:hover .product-minimal-img img {
  transform: scale(1.05);
}
/* 响应式 */
@media (max-width: 1200px) {
  .product-minimal-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .product-minimal-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .product-minimal-img { height: 160px; padding: 12px; }
  .product-minimal-info { padding: 12px 12px 8px; }
  .product-minimal-model { font-size: 14px; }
}
@media (max-width: 480px) {
  .product-minimal-grid { grid-template-columns: 1fr; }
}

/* ===== v5.2 案例/新闻极简白底模板 ===== */

/* 案例极简 */
.case-minimal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.case-minimal-card {
  display: flex;
  flex-direction: column;
  background: #FFFFFF;
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  transition: all 0.3s ease;
  border: 1px solid #f0f0f0;
}
.case-minimal-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}
.case-minimal-info {
  padding: 20px 20px 12px;
}
.case-minimal-tag {
  display: inline-block;
  font-size: 12px;
  color: #47809A;
  background: #EBF3FC;
  padding: 2px 10px;
  border-radius: 10px;
  margin-bottom: 8px;
}
.case-minimal-title {
  font-size: 16px;
  font-weight: 600;
  color: #0F1B2D;
  margin: 0;
  line-height: 1.4;
}
.case-minimal-img {
  width: 100%;
  height: 220px;
  background: #FFFFFF;
  overflow: hidden;
}
.case-minimal-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.case-minimal-card:hover .case-minimal-img img {
  transform: scale(1.05);
}

/* 新闻极简 */
.news-minimal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.news-minimal-card {
  display: flex;
  background: #FFFFFF;
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  transition: all 0.3s ease;
  border: 1px solid #f0f0f0;
}
.news-minimal-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}
.news-minimal-info {
  flex: 1 1 auto;
  padding: 24px;
  min-width: 0;
}
.news-minimal-date {
  font-size: 12px;
  color: #6A7B8C;
  margin: 0 0 8px;
}
.news-minimal-title {
  font-size: 17px;
  font-weight: 600;
  color: #0F1B2D;
  margin: 0 0 12px;
  line-height: 1.4;
}
.news-minimal-summary {
  font-size: 13px;
  color: #5A6B7E;
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-minimal-img {
  flex: 0 0 200px;
  width: 200px;
  background: #FFFFFF;
  overflow: hidden;
}
.news-minimal-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-minimal-card:hover .news-minimal-img img {
  transform: scale(1.05);
}

/* 响应式 */
@media (max-width: 992px) {
  .case-minimal-grid { grid-template-columns: repeat(2, 1fr); }
  .news-minimal-grid { grid-template-columns: 1fr; }
  .news-minimal-img { flex: 0 0 160px; width: 160px; }
}
@media (max-width: 768px) {
  .case-minimal-grid { grid-template-columns: 1fr; gap: 12px; }
  .case-minimal-img { height: 180px; }
  .case-minimal-info { padding: 14px; }
  .news-minimal-card { flex-direction: column; }
  .news-minimal-img { flex: 0 0 auto; width: 100%; height: 180px; }
  .news-minimal-info { padding: 16px; }
}

/* ===== 内页 Banner 无遮罩 - 文字阴影强化 v5.8 ===== */
.page-banner-gradient-inner .page-banner-gradient-label,
.page-banner-gradient-inner .page-banner-gradient-title,
.page-banner-gradient-inner .page-banner-gradient-desc {
  text-shadow: 0 2px 16px rgba(0,0,0,0.55), 0 1px 4px rgba(0,0,0,0.75) !important;
}
.page-banner-content .page-banner-title,
.page-banner-content .page-banner-desc {
  text-shadow: 0 2px 16px rgba(0,0,0,0.55), 0 1px 4px rgba(0,0,0,0.75) !important;
}

/* ===== 内页 Banner 子元素遮罩去除 v5.8 ===== */
.page-banner-img .banner-bg::after {
  background: none !important;
}

/* ===== 产品列表分组展示 v6.1 ===== */
/* 分组区块 */
.product-group-section {
  margin-bottom: 60px;
}
.product-group-section-minimal {
  margin-bottom: 50px;
}

/* 分组标题 */
.product-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid #E2EAF2;
  position: relative;
}
.product-group-header::after {
  content: "";
  position: absolute;
  bottom: -2px; left: 0;
  width: 60px; height: 2px;
  background: var(--accent, #47809A);
}
.product-group-header-minimal {
  border-bottom-color: #EAEEF3;
}
.product-group-header-minimal::after {
  width: 40px;
  height: 2px;
}

.product-group-header-left {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.product-group-icon {
  width: 10px; height: 10px;
  background: var(--accent, #47809A);
  border-radius: 2px;
  transform: rotate(45deg);
  flex-shrink: 0;
}
.product-group-icon-minimal {
  width: 8px; height: 8px;
  background: #8E9DB3;
  border-radius: 2px;
  transform: rotate(45deg);
  flex-shrink: 0;
}

.product-group-title {
  font-size: 22px;
  font-weight: 700;
  color: #0F1B2D;
  margin: 0;
  letter-spacing: -0.3px;
}
.product-group-title-minimal {
  font-size: 18px;
  font-weight: 600;
  color: #2A3B4D;
  margin: 0;
}
.product-group-count {
  font-size: 13px;
  color: #8E9DB3;
  white-space: nowrap;
}
.product-group-count-minimal {
  font-size: 12px;
  color: #A0AEC0;
  white-space: nowrap;
}

/* 分组内产品网格继承原有样式 */
.product-group-section .product-list-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.product-group-section-minimal .product-minimal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* 移动端适配 */
@media (max-width: 1024px) {
  .product-group-section .product-list-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .product-group-section-minimal .product-minimal-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .product-group-title { font-size: 18px; }
  .product-group-title-minimal { font-size: 16px; }
  .product-group-section { margin-bottom: 40px; }
  .product-group-section-minimal { margin-bottom: 36px; }
}

@media (max-width: 640px) {
  .product-group-section .product-list-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .product-group-section-minimal .product-minimal-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .product-group-title { font-size: 16px; }
  .product-group-title-minimal { font-size: 14px; }
  .product-group-section { margin-bottom: 32px; }
  .product-group-section-minimal { margin-bottom: 28px; }
  .product-group-header { padding-bottom: 12px; margin-bottom: 16px; }
}

/* ===== 左侧分类导航 v6.2 ===== */
.category-layout {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

/* === 侧边栏 === */
.category-sidebar {
  width: 240px;
  flex-shrink: 0;
  position: sticky;
  top: 120px;
}
.category-sidebar-inner {
  background: #fff;
  border: 1px solid #E2EAF2;
  border-radius: 10px;
  overflow: hidden;
}
.category-sidebar-header {
  padding: 16px 20px 14px;
  background: linear-gradient(135deg, #0F1B2D 0%, #1A3252 100%);
}
.category-sidebar-header h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.5px;
}

/* === 分类树 === */
.category-tree {
  padding: 8px 0;
}
.category-tree-parent {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: #2A3B4D;
  text-decoration: none;
  transition: all 0.2s;
  border-left: 3px solid transparent;
}
.category-tree-parent:hover {
  background: #F7F9FC;
  color: var(--accent, #47809A);
}
.category-tree-parent.active {
  background: #EEF2F8;
  color: var(--accent, #47809A);
  border-left-color: var(--accent, #47809A);
}

/* 分组 */
.category-tree-group {
  border-top: 1px solid #F0F3F7;
}
.category-tree-group:first-child {
  border-top: 1px solid #F0F3F7;
}
.category-tree-parent-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: #2A3B4D;
  cursor: pointer;
  user-select: none;
  transition: background 0.2s;
}
.category-tree-parent-link:hover {
  background: #F7F9FC;
}
.category-tree-arrow {
  display: inline-block;
  width: 0; height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid #8E9DB3;
  transition: transform 0.25s;
  flex-shrink: 0;
}
.category-tree-group.expanded .category-tree-arrow {
  transform: rotate(180deg);
}
.category-tree-parent-text {
  flex: 1;
}

/* 子分类 */
.category-tree-children {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.category-tree-group.expanded .category-tree-children {
  max-height: 600px;
}
.category-tree-child {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 20px 8px 36px;
  font-size: 13px;
  color: #4A5A6E;
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: all 0.2s;
}
.category-tree-child:hover {
  background: #F7F9FC;
  color: var(--accent, #47809A);
}
.category-tree-child.active {
  background: #EEF2F8;
  color: var(--accent, #47809A);
  border-left-color: var(--accent, #47809A);
  font-weight: 600;
}
.category-tree-child-count {
  font-size: 11px;
  color: #A0AEC0;
  background: #F0F3F7;
  padding: 1px 7px;
  border-radius: 10px;
}
.category-tree-child.active .category-tree-child-count {
  background: #DDE5EF;
  color: var(--accent, #47809A);
}

/* === 右侧主内容 === */
.category-main {
  flex: 1;
  min-width: 0;
}

/* === 移动端：侧边栏隐藏，顶部显示分类切换按钮 === */
@media (max-width: 1024px) {
  .category-layout {
    flex-direction: column;
    gap: 20px;
  }
  .category-sidebar {
    width: 100%;
    position: static;
  }
  .category-sidebar-header {
    padding: 12px 16px;
    cursor: pointer;
    position: relative;
  }
  .category-sidebar-header::after {
    content: "";
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 0; height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid #fff;
    transition: transform 0.25s;
  }
  .category-sidebar.open .category-sidebar-header::after {
    transform: translateY(-50%) rotate(180deg);
  }
  .category-tree {
    display: none;
  }
  .category-sidebar.open .category-tree {
    display: block;
  }
  .category-tree-child {
    padding: 10px 20px 10px 36px;
    font-size: 14px;
  }
}

/* ===== 导航栏产品下拉菜单 v6.3 ===== */
.nav-dropdown {
  position: relative;
}
.nav-dropdown-toggle {
  display: flex !important;
  align-items: center;
  gap: 4px;
}
.nav-dropdown-arrow {
  display: inline-block;
  font-size: 10px;
  transition: transform 0.25s;
  color: var(--accent, #47809A);
}
.nav-dropdown:hover .nav-dropdown-arrow {
  transform: rotate(180deg);
}

/* 下拉面板 */
.nav-mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border: 1px solid #E2EAF2;
  border-top: 3px solid var(--accent, #47809A);
  border-radius: 0 0 10px 10px;
  box-shadow: 0 12px 40px rgba(15,27,45,0.12), 0 4px 12px rgba(15,27,45,0.06);
  padding: 28px 32px 24px;
  min-width: 680px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(8px);
  transition: opacity 0.2s, visibility 0.2s, transform 0.25s;
  z-index: 1000;
}
.nav-dropdown:hover .nav-mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* 内部四列 */
.nav-mega-inner {
  display: flex;
  gap: 40px;
}
.nav-mega-col {
  flex: 1;
  min-width: 0;
}
.nav-mega-head {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: #0F1B2D;
  text-decoration: none;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid #E2EAF2;
  transition: color 0.2s;
}
.nav-mega-head:hover {
  color: var(--accent, #47809A);
}
.nav-mega-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.nav-mega-link {
  display: block;
  font-size: 13px;
  color: #4A5A6E;
  text-decoration: none;
  padding: 5px 0;
  transition: all 0.2s;
  line-height: 1.5;
}
.nav-mega-link:hover {
  color: var(--accent, #47809A);
  padding-left: 4px;
}

/* 移动端隐藏下拉菜单 */
@media (max-width: 1024px) {
  .nav-mega-menu,
  .nav-dropdown:hover .nav-mega-menu {
    display: none !important;
    opacity: 0;
    visibility: hidden;
  }
  .nav-dropdown-arrow {
    display: none;
  }
  .nav-dropdown-toggle {
    display: flex;
  }
}

/* ============================================================
   沉砚青 · Slate Cerulean 主题覆盖层
   沉青黑 #0C1216 + 玉白 + 黛青 #6BA9C2
   "如端砚蓄墨,青瓷含光"
   纯 CSS 换肤,不改动模板 HTML 排版
   ============================================================ */

/* === 产品区 #products-preview === */
#products-preview .section-label { color: #6BA9C2 !important; }
#products-preview .home-prod-e-card {
  background: #243038 !important;
  box-shadow: 0 4px 20px rgba(0,0,0,0.30), 0 1px 0 rgba(255,255,255,0.06) inset !important;
}
#products-preview .home-prod-e-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.22) 50%, transparent);
  z-index: 3;
  pointer-events: none;
}
#products-preview .home-prod-e-card:hover {
  box-shadow: 0 24px 48px rgba(0,0,0,0.50), 0 0 0 1px rgba(107,169,194,0.24) !important;
}
#products-preview .home-prod-e-content span[style*="#0b4f9e"] {
  color: #8BC3D8 !important;
  border-bottom-color: #6BA9C2 !important;
}

/* === 关于我们 #about-preview === */
#about-preview .section-label { color: #6BA9C2 !important; }
#about-preview .about-img-border { border-color: rgba(107,169,194,0.15) !important; }
#about-preview .about-img-corner { border-color: rgba(107,169,194,0.3) !important; }
#about-preview .stat-card {
  background: rgba(255,255,255,0.04) !important;
  border-color: rgba(255,255,255,0.10) !important;
}
#about-preview .stat-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.20) !important;
  border-color: rgba(255,255,255,0.20) !important;
}
#about-preview .stat-steel-bar { background: #6BA9C2 !important; }
#about-preview .stat-label { color: rgba(255,255,255,0.82) !important; }
#about-preview .eng-item {
  background: rgba(255,255,255,0.04) !important;
  border-color: rgba(255,255,255,0.10) !important;
}
#about-preview .eng-item:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.20) !important;
  border-color: rgba(255,255,255,0.20) !important;
}
#about-preview .eng-tag { color: rgba(255,255,255,0.82) !important; }
#about-preview .about-btn:hover {
  background: #6BA9C2 !important;
  border-color: #6BA9C2 !important;
}

/* === 新闻区 #news-preview === */
#news-preview .section-label { color: #6BA9C2 !important; }
#news-preview .home-news-card {
  background: rgba(255,255,255,0.04) !important;
  border-color: rgba(255,255,255,0.10) !important;
  box-shadow: 0 2px 8px rgba(0,0,0,0.20) !important;
}
#news-preview .home-news-card:hover {
  box-shadow: 0 12px 36px rgba(0,0,0,0.30) !important;
  border-color: rgba(255,255,255,0.20) !important;
}
#news-preview .news-card-steel-bar { background: #6BA9C2 !important; }
#news-preview .news-card-img { background: #243038 !important; }
#news-preview .news-card-cat {
  background: rgba(107,169,194,0.85) !important;
}
#news-preview .home-news-card:hover .news-card-cat { background: #6BA9C2 !important; }
#news-preview .news-card-date-num { color: #FFFFFF !important; }
#news-preview .news-card-date-sep { color: rgba(255,255,255,0.4) !important; }
#news-preview .news-card-date-month { color: rgba(255,255,255,0.56) !important; }
#news-preview .news-card-title { color: #FFFFFF !important; }
#news-preview .home-news-card:hover .news-card-title { color: #6BA9C2 !important; }
#news-preview .news-card-summary { color: rgba(255,255,255,0.56) !important; }
#news-preview .news-card-arrow { color: rgba(255,255,255,0.4) !important; }
#news-preview .home-news-card:hover .news-card-arrow { color: #6BA9C2 !important; }
#news-preview .news-card-placeholder { color: rgba(255,255,255,0.3) !important; }
#news-preview .news-btn:hover {
  background: #6BA9C2 !important;
  border-color: #6BA9C2 !important;
}

/* ===== 非首页页面避开固定导航栏（与 nav_b .mnav 高度对齐） ===== */
body:not(.homepage) {
  padding-top: 68px !important;
}
@media (max-width: 768px) {
  body:not(.homepage) { padding-top: 64px !important; }
}
@media (max-width: 480px) {
  body:not(.homepage) { padding-top: 60px !important; }
}

body:not(.homepage) .page-banner {
  margin-top: 0 !important;
}

/* ===== 移动端全屏菜单 v7.0 ===== */
@media (max-width: 1024px) {
  .navbar-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: #FFFFFF;
    z-index: 999;
    flex-direction: column;
    padding: 100px 32px 40px;
    gap: 0;
    overflow-y: auto;
    display: none !important;
    -webkit-overflow-scrolling: touch;
  }

  /* 菜单打开状态 */
  .navbar-menu.mobile-open {
    display: flex !important;
  }

  .navbar-menu > li {
    width: 100%;
    border-bottom: 1px solid #EEF2F7;
  }

  .navbar-menu > li > a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    font-size: 17px;
    font-weight: 500;
    color: #0F1B2D;
    text-decoration: none;
  }

  .navbar-menu > li > a.active {
    color: #47809A;
  }

  /* 关闭按钮（通过 hamburger 动画指示） */
  .menu-toggle {
    z-index: 1000;
    position: relative;
  }

  /* 菜单打开时，hamburger 变为 X */
  body.nav-menu-open .menu-toggle span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  body.nav-menu-open .menu-toggle span:nth-child(2) {
    opacity: 0;
  }
  body.nav-menu-open .menu-toggle span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  /* 移动端菜单 backdrop 遮罩 */
  .navbar-menu.mobile-open::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: #FFFFFF;
    z-index: -1;
  }
}

/* ===== 移动端菜单项展开子菜单（选中的一级菜单展开） ===== */
@media (max-width: 1024px) {
  .navbar-menu > li.nav-dropdown > .nav-mega-menu {
    display: none !important;
    position: static;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    background: transparent;
    padding: 0 0 12px 0;
    width: 100%;
  }

  .navbar-menu > li.nav-dropdown > .nav-mega-menu .nav-cascade-panel {
    flex-direction: column;
    gap: 0;
    padding: 0;
  }

  .navbar-menu > li.nav-dropdown > .nav-mega-menu .nav-cascade-item {
    border: none;
    padding: 0;
  }

  .navbar-menu > li.nav-dropdown > .nav-mega-menu .nav-cascade-link {
    padding: 10px 0 10px 16px;
    font-size: 14px;
    color: #4A5A6E;
  }

  .navbar-menu > li.nav-dropdown > .nav-mega-menu .nav-sub-menu {
    display: none;
    position: static;
    box-shadow: none;
    border: none;
    background: transparent;
    padding: 0 0 0 16px;
  }

  .navbar-menu > li.nav-dropdown > .nav-mega-menu .nav-sub-menu-inner {
    padding: 0;
  }

  /* 点击展开子菜单（依赖 JS 切换 .mobile-sub-open） */
  .navbar-menu > li.nav-dropdown.mobile-sub-open > .nav-mega-menu {
    display: block !important;
  }

  .navbar-menu > li.nav-dropdown > .nav-mega-menu .nav-cascade-item.has-sub > .nav-cascade-link .nav-cascade-arrow,
  .navbar-menu > li.nav-dropdown > .nav-mega-menu .nav-sub-item.has-sub > .nav-sub-link .nav-sub-arrow {
    display: inline-flex !important;
    font-size: 14px;
    color: #4A5A6E;
    margin-left: 4px;
    transition: transform 0.2s;
  }

  /* 移动端：二级/三级子分类展开覆盖（兼容 769-1024px 范围） */
  .navbar-menu > li.nav-dropdown > .nav-mega-menu .nav-cascade-item.mobile-sub-open > .nav-sub-menu,
  .navbar-menu > li.nav-dropdown > .nav-mega-menu .nav-sub-item.mobile-sub-open > .nav-sub-menu {
    display: block !important;
  }
}

/* ===== 移动端悬浮按钮自适应定位 v8.0 ===== */
@media (max-width: 1024px) {
  .float-contact {
    right: 12px !important;
    bottom: 260px !important;
    gap: 8px !important;
  }
  .float-contact-btn {
    width: 44px !important;
    height: 44px !important;
    border-radius: 50% !important;
  }
  .float-contact-btn:hover {
    width: 44px !important;
  }
  .float-contact-text {
    display: none !important;
  }
  .float-contact-icon {
    font-size: 10px !important;
  }
}

/* ===== 移动端Banner轮播图自适应 v8.0 ===== */
@media (max-width: 768px) {
  .banner-slide img {
    object-fit: cover !important;
    object-position: center center !important;
    width: 100% !important;
    height: 100% !important;
  }
  .banner {
    height: 70vh !important;
    min-height: 400px !important;
    max-height: 600px !important;
  }
}

/* ===== 强制修复移动端导航菜单白色字体问题 ===== */
@media (max-width: 1024px) {
  .navbar-menu,
  .navbar-menu.mobile-open,
  .navbar-menu > li > a,
  .navbar-menu > li > a.active,
  .navbar-menu .nav-dropdown-toggle,
  .navbar-menu .nav-dropdown-arrow,
  .navbar-menu .nav-mega-menu,
  .navbar-menu .nav-cascade-panel,
  .navbar-menu .nav-cascade-item,
  .navbar-menu .nav-cascade-link,
  .navbar-menu .nav-cascade-text,
  .navbar-menu .nav-cascade-arrow,
  .navbar-menu .nav-sub-menu,
  .navbar-menu .nav-sub-menu-inner,
  .navbar-menu .nav-sub-item,
  .navbar-menu .nav-sub-link,
  .navbar-menu .nav-sub-text,
  .navbar-menu .nav-sub-arrow,
  .navbar-menu .nav-sub-link-3,
  .navbar-menu .nav-sub-all {
    color: #0F1B2D !important;
  }

  .navbar-menu > li > a:hover,
  .navbar-menu > li > a.active,
  .navbar-menu .nav-dropdown-toggle:hover,
  .navbar-menu .nav-dropdown-toggle.active,
  .navbar-menu .nav-cascade-link:hover,
  .navbar-menu .nav-sub-link:hover,
  .navbar-menu .nav-sub-link.active,
  .navbar-menu .nav-sub-link-3:hover,
  .navbar-menu .nav-sub-all:hover {
    color: #47809A !important;
  }
}