/* ============================================
   德洛斯照明 - 企业深蓝主题（V3）
   纯正深海蓝 + 纯净白 + 固德威式商务格调
   ============================================ */

:root {
  /* 主色 - 深湛商务蓝 */
  --navy: #0E3A6F;
  --navy-dark: #072A52;
  --navy-deeper: #051D3A;
  --navy-light: #47809A;
  --navy-lighter: #6BA0BA;
  --navy-pale: #EBF2FA;

  --primary: #0E3A6F;
  --primary-dark: #072A52;
  --primary-light: #EBF2FA;

  /* 背景层级 */
  --bg-main: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-section: #F2F6FB;
  --bg-deep: #072A52;

  /* 文字层级 */
  --text-primary: #0F1B2D;
  --text-secondary: #4A5A6E;
  --text-muted: #8099AA;
  --text-light: #AABBC8;
  --text-on-deep: rgba(255, 255, 255, 0.92);
  --text-on-deep-muted: rgba(255, 255, 255, 0.65);

  --accent: #47809A;
  --border: #E2EAF2;
  --border-strong: #CCD9E5;

  /* 分割线统一系统 */
  --divider-height: 2px;
  --divider-width: 80px;
  --divider-color: var(--accent, #47809A);
  --divider-gradient: linear-gradient(90deg, transparent, var(--divider-color), transparent);
  --divider-light: linear-gradient(90deg, transparent, rgba(255,255,255,0.6), transparent);

  /* 阴影 - 克制化（低透明、深色阴影） */
  --shadow: 0 2px 8px -2px rgba(10, 31, 61, 0.06), 0 1px 2px -1px rgba(10, 31, 61, 0.04);
  --shadow-lg: 0 12px 32px -8px rgba(10, 31, 61, 0.10), 0 4px 12px -4px rgba(10, 31, 61, 0.06);
  --shadow-card: 0 2px 16px rgba(10, 31, 61, 0.06);

  /* 字体系统 */
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --font-sans: "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-metric: "Oswald", "Arial Narrow", "Helvetica Neue", sans-serif;
}

/* 基础重置 */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-main);
  margin: 0;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* 商务符号系统 */
.section-index {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-metric);
  font-size: 13px;
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.section-index::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 2px;
  background: var(--navy-light);
  margin-right: 8px;
  transform: translateY(-4px);
  opacity: 0.6;
}
.section-index-total {
  color: var(--text-light);
  font-size: 12px;
  letter-spacing: 0.1em;
}
.gold-rule {
  width: 60px;
  height: 2px;
  background: var(--navy-light);
  margin: 0;
  border: 0;
  opacity: 0.5;
}
.gold-rule-center { margin: 0 auto; }
.gold-rule-left { margin: 0; }

/* 数字字体优化 */
.tabular-nums { font-variant-numeric: tabular-nums; }

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(22px) saturate(180%);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  border-bottom: none;
  box-shadow: 0 1px 3px rgba(14, 58, 111, 0.06);
  transition: all 0.3s ease;
}
.navbar-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--navy);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.05em;
}
.navbar-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--navy);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
}
.navbar-menu {
  display: flex;
  gap: 40px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.navbar-menu a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s;
  position: relative;
}
.navbar-menu a:hover { color: var(--navy); }
.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
.navbar-menu a:hover::after {
  width: 100%;
}
.navbar-cta {
  padding: 10px 24px;
  background: var(--navy);
  color: #fff;
  border: none;
  border-radius: 20px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}
.navbar-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--navy);
  transition: all 0.3s;
}

/* Banner 轮播 */
.banner {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 1090px;
  overflow: hidden;
  background: #f0f6ff;
}
.banner-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}
.banner-slide.active { opacity: 1; }
.banner-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  animation: kenburns 8s ease-out forwards;
}
@keyframes kenburns {
  from { transform: scale(1); }
  to { transform: scale(1.05); }
}
.banner-overlay {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.08) 0%,
    rgba(0, 0, 0, 0.25) 50%,
    rgba(0, 0, 0, 0.15) 100%
  );
}
.banner-content {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  z-index: 10;
}
.banner-content-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
  text-align: center;
}
.banner-title {
  font-family: var(--font-serif);
  font-size: 64px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  letter-spacing: 0.04em;
  margin: 0 0 20px;
  opacity: 0;
  transform: translateY(16px);
  animation: bannerFadeInCenter 1s 0.3s ease-out forwards;
  text-shadow: 0 2px 8px rgba(0,0,0,0.55), 0 1px 3px rgba(0,0,0,0.85), 0 0 1px rgba(0,0,0,1);
  -webkit-text-stroke: 0.5px rgba(0,0,0,0.35);
}
.banner-subtitle {
  font-family: var(--font-serif);
  font-size: 24px;
  color: #fff;
  font-weight: 500;
  letter-spacing: 0.15em;
  margin: 0;
  opacity: 0;
  transform: translateY(16px);
  animation: bannerFadeInCenter 1s 0.6s ease-out forwards;
  text-shadow: 0 2px 6px rgba(0,0,0,0.6), 0 1px 2px rgba(0,0,0,0.85);
}
.banner-meta {
  margin-top: 28px;
  display: flex;
  gap: 40px;
  justify-content: center;
  opacity: 0;
  transform: translateY(16px);
  animation: bannerFadeInCenter 1s 0.9s ease-out forwards;
}
.banner-meta-item {
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.banner-meta-item::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--navy-light);
  display: inline-block;
  opacity: 0.6;
}
.banner-gold-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--navy-light) 50%, transparent 100%);
  z-index: 10;
  opacity: 0.4;
}
.banner-tagline {
  margin-top: 24px;
  display: flex;
  gap: 32px;
  justify-content: center;
  opacity: 0;
  transform: translateY(16px);
  animation: bannerFadeInCenter 1s 0.9s ease-out forwards;
}
.banner-tagline-item {
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.banner-tagline-item::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
}
@keyframes bannerFadeIn {
  to { opacity: 1; transform: translateX(0); }
}
@keyframes bannerFadeInCenter {
  to { opacity: 1; transform: translateY(0); }
}
.banner-indicators {
  position: absolute;
  bottom: 40px;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  justify-content: center;
  gap: 12px;
}
.banner-dot {
  width: 32px;
  height: 4px;
  border-radius: 2px;
  border: none;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  padding: 0;
  transition: all 0.4s ease;
}
.banner-dot.active {
  background: #fff;
  width: 48px;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}
.banner-scroll-hint {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
  text-align: center;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* 通用 section */
.section {
  padding: 120px 0;
  position: relative;
}
.section-header {
  text-align: center;
  margin-bottom: 80px;
}
.section-header-left {
  text-align: left;
  margin-bottom: 56px;
}
.section-label {
  display: inline-block;
  font-family: var(--font-metric);
  font-size: 14px;
  letter-spacing: 0.3em;
  color: #8E9DB3;
  text-transform: uppercase;
  margin-bottom: 22px;
  font-weight: 500;
}
.section-title {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 24px;
  line-height: 1.3;
  letter-spacing: 0.04em;
}
.section-divider {
  width: var(--divider-width);
  height: var(--divider-height);
  background: var(--divider-gradient);
  margin: 20px auto;
  border: 0;
}
.section-header-left .section-divider { margin: 0; }
.section-divider--light { background: var(--divider-light) !important; }
.section-divider--sm { width: 48px; }
.section-divider--m0 { margin: 0 0 20px 0 !important; }
.section-desc {
  max-width: 720px;
  margin: 28px auto 0;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: 0.05em;
}
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 40px;
}

/* 产品矩阵 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--bg-card);
  border: none;
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
  box-shadow: var(--shadow-card);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(10, 31, 61, 0.12);
}
.product-card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: var(--navy-pale);
  overflow: hidden;
}
.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.product-card:hover .product-card-img img {
  transform: scale(1.08);
}
.product-card-body {
  padding: 20px;
  text-align: center;
}
.product-card-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 8px;
}
.product-card-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

/* 低位照明聚焦 */
.focus-section {
  background: var(--bg-card);
}
.focus-grid {
  display: grid;
  grid-template-columns: 60% 40%;
  gap: 0;
  align-items: stretch;
}
.focus-img {
  width: 100%;
  min-height: 500px;
  position: relative;
  overflow: hidden;
}
.focus-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.focus-img-badge {
  position: absolute;
  top: 30px;
  left: 30px;
  padding: 8px 20px;
  background: var(--accent);
  color: var(--navy);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 14px;
  border-radius: 2px;
}
.focus-content {
  padding: 60px 50px;
  background: var(--navy-pale);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.focus-content h3 {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--navy);
  margin: 0 0 24px;
  line-height: 1.4;
}
.focus-content p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
  margin: 0 0 16px;
}
.focus-features {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.focus-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--navy);
  font-weight: 500;
}
.focus-feature::before {
  content: '✓';
  width: 24px;
  height: 24px;
  background: var(--navy);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

/* 公司简介 */
.about-section {
  background: var(--bg-card);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text h3 {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--navy);
  margin: 0 0 24px;
}
.about-text p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
  margin: 0 0 16px;
}
.about-cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.about-cert {
  background: var(--navy-pale);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px 16px;
  text-align: center;
  transition: all 0.3s;
}
.about-cert:hover {
  border-color: var(--navy);
  transform: translateY(-2px);
}
.about-cert-name {
  font-family: var(--font-metric);
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 6px;
}
.about-cert-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
}

/* 数据实力 */
.stats-section {
  background: var(--navy);
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(74,111,165,0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(74,111,165,0.08) 0%, transparent 50%);
}
.stats-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.stat-item {
  text-align: center;
  padding: 20px 0;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}
.stat-item:last-child { border-right: none; }
.stat-number {
  font-family: var(--font-metric);
  font-size: 64px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  margin: 0 0 12px;
}
.stat-suffix {
  font-size: 24px;
}
.stat-label {
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  margin: 0;
}
.stats-extra {
  position: relative;
  z-index: 1;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}
.stats-extra-item {
  color: rgba(255, 255, 255, 0.9);
}
.stats-extra-num {
  font-family: var(--font-metric);
  font-size: 36px;
  font-weight: 700;
  color: #fff;
}
.stats-extra-desc {
  font-size: 14px;
  margin-top: 8px;
}

/* 研发实力 */
.rd-section {
  background: var(--bg-card);
}
.rd-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.rd-text h3 {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--navy);
  margin: 0 0 24px;
}
.rd-text p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
  margin: 0 0 16px;
}
.rd-params {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.rd-param {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--navy-pale);
  border-radius: 8px;
  border-left: 3px solid var(--navy);
}
.rd-param-icon {
  width: 40px;
  height: 40px;
  background: var(--navy);
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-metric);
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
}
.rd-param-info {
  flex: 1;
}
.rd-param-value {
  font-family: var(--font-metric);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin: 0;
}
.rd-param-label {
  font-size: 12px;
  color: var(--text-muted);
  margin: 2px 0 0;
}
.rd-img {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.rd-img img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  display: block;
}

/* 发展历程 */
.timeline-section {
  background: var(--bg-section);
}
.timeline {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--navy-lighter);
  transform: translateX(-50%);
}
.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 40px 50px;
}
.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}
.timeline-item:nth-child(even) {
  left: 50%;
}
.timeline-item::after {
  content: '';
  position: absolute;
  top: 8px;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border: 3px solid var(--navy);
  border-radius: 50%;
  z-index: 1;
}
.timeline-item:nth-child(odd)::after {
  right: -8px;
}
.timeline-item:nth-child(even)::after {
  left: -8px;
}
.timeline-period {
  font-family: var(--font-metric);
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 16px;
}
.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  text-align: left;
  box-shadow: var(--shadow);
}
.timeline-item:nth-child(odd) .timeline-card {
  text-align: left;
}
.timeline-event {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 8px;
}
.timeline-event::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--navy-lighter);
  border-radius: 50%;
}
.timeline-event:last-child { margin-bottom: 0; }

/* 新闻频道 */
.news-section {
  background: var(--bg-card);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.news-card {
  background: var(--bg-card);
  border: none;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.3s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(10, 31, 61, 0.12);
}
.news-card-img {
  width: 100%;
  height: 140px;
  overflow: hidden;
  background: var(--navy-pale);
}
.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.news-card:hover .news-card-img img {
  transform: scale(1.08);
}
.news-card-body {
  padding: 16px;
}
.news-card-date {
  font-family: var(--font-metric);
  font-size: 12px;
  color: var(--navy-lighter);
  margin: 0 0 6px;
}
.news-card-title {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 8px;
  line-height: 1.4;
  transition: color 0.2s;
}
.news-card:hover .news-card-title {
  color: var(--navy-light);
}
.news-card-summary {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0 0 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card-more {
  font-family: var(--font-metric);
  font-size: 12px;
  color: var(--navy);
  letter-spacing: 0.1em;
}
.news-more-btn {
  text-align: center;
  margin-top: 50px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: var(--navy);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s;
}
.btn-primary:hover {
  background: var(--navy-light);
  transform: translateY(-2px);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--navy);
  border-radius: 4px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s;
}
.btn-outline:hover {
  background: var(--navy);
  color: #fff;
}

/* 页脚 - 高端白色 */
.footer {
  background: #fff;
  color: var(--text-secondary);
  padding: 60px 0 0;
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}
.footer-brand h4 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--navy);
  margin: 0 0 16px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
  margin: 0 0 20px;
}
.footer-certs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-cert {
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-metric);
  font-size: 12px;
  color: var(--text-muted);
}
.footer-col h5 {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 20px;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col li {
  margin-bottom: 12px;
}
.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--navy); }
.footer-contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--text-muted);
}
.footer-contact-label {
  color: var(--text-light);
  flex-shrink: 0;
  width: 60px;
}
.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
}
.footer-qr {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.footer-qr img {
  width: 100px;
  height: 100px;
  border: 1px solid var(--border);
  border-radius: 4px;
}
.footer-qr span {
  font-size: 12px;
  color: var(--text-muted);
}

/* 滚动渐入动画 */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 响应式 */
@media (max-width: 1280px) {
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
}
@media (max-width: 768px) {
  .navbar-menu { display: none; }
  .menu-toggle { display: flex; }
  .navbar-inner { padding: 0 20px; }
  .banner { height: 70vh; min-height: 400px; max-height: 600px; }
  .banner-slide img { object-position: 82% center; }
  .banner-title { font-size: 32px; }
  .banner-subtitle { font-size: 20px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .focus-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .about-cert-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 20px; }
  .rd-grid { grid-template-columns: 1fr; }
  .rd-params { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .section-title { font-size: 28px; }
  .container { padding: 0 20px; }
  .timeline::before { left: 20px; }
  .timeline-item { width: 100%; left: 0 !important; padding-left: 50px; padding-right: 0; text-align: left !important; }
  .timeline-item::after { left: 12px !important; right: auto !important; }
  .stats-extra { grid-template-columns: 1fr; }
}

/* ============================================
   内页通用样式
   ============================================ */

/* 内页 Banner - 固定比例 */
.page-banner { position: relative; overflow: hidden; background: var(--navy); aspect-ratio: 3.5 / 1; }
.page-banner .page-banner-img { position: absolute; inset: 0; }
.page-banner .page-banner-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.page-banner-overlay {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.05) 0%, rgba(0, 0, 0, 0.18) 50%, rgba(0, 0, 0, 0.08) 100%);
  pointer-events: none;
}
.page-banner-content {
  position: absolute; inset: 0; z-index: 2;
  display: flex; flex-direction: column;
  justify-content: center;
  text-align: center;
  max-width: 1400px; margin: 0 auto; padding: 0 40px;
  pointer-events: none;
}
.page-banner-label {
  font-family: var(--font-metric);
  font-size: 14px; letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin: 0 0 12px;
}
.page-banner-title {
  font-family: var(--font-serif);
  font-size: 44px; font-weight: 700;
  color: #fff; margin: 0 0 16px; line-height: 1.3;
  text-shadow: 0 2px 8px rgba(0,0,0,0.55), 0 1px 3px rgba(0,0,0,0.85);
}
.page-banner-desc {
  font-size: 16px; color: rgba(255,255,255,0.92);
  max-width: 600px; line-height: 1.8; margin: 0;
  text-shadow: 0 1px 4px rgba(0,0,0,0.7);
}

/* 面包屑 */
.breadcrumb {
  max-width: 1400px; margin: 0 auto;
  padding: 20px 40px;
  font-size: 13px;
  color: #4A5A6E;
  background: #FAFCFE;
}
.breadcrumb a { color: var(--accent); text-decoration: none; }
.breadcrumb a:hover { color: var(--navy); text-decoration: underline; }
.breadcrumb span { margin: 0 8px; color: #9AA8B8; }

/* 面包屑内联模式 - 嵌入产品区域，与产品卡片对齐 */
.breadcrumb-inline {
  max-width: none;
  margin: 0;
  padding: 0 0 18px 0;
  background: transparent;
  border-bottom: 1px solid #EEF2F8;
}

/* 产品列表页 - 极简展示风 3列 */
.product-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product-list-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s;
  text-decoration: none;
  color: inherit;
  display: block;
}
.product-list-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--navy);
}
.product-list-card-img {
  width: 100%; height: 260px;
  overflow: hidden; background: var(--navy-pale);
}
.product-list-card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s;
}
.product-list-card:hover .product-list-card-img img { transform: scale(1.08); }
.product-list-card-body { padding: 24px; }
.product-list-card-name {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 700;
  color: var(--navy); margin: 0 0 8px;
}
.product-list-card-desc {
  font-size: 14px; color: var(--text-muted);
  line-height: 1.6; margin: 0 0 16px;
}
.product-list-card-tags {
  display: flex; gap: 8px; flex-wrap: wrap;
}
.product-list-card-tag {
  padding: 2px 10px; font-size: 12px;
  background: var(--navy-pale); color: var(--navy);
  border-radius: 10px;
}

/* 产品分类筛选 */
.product-filter {
  display: flex; gap: 12px; flex-wrap: wrap;
  margin-bottom: 40px; justify-content: center;
}
.product-filter-btn {
  padding: 8px 24px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 14px; color: var(--text-secondary);
  cursor: pointer; transition: all 0.2s;
}
.product-filter-btn:hover,
.product-filter-btn.active {
  background: var(--navy); color: #fff;
  border-color: var(--navy);
}

/* 产品详情 */
.product-detail-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
}
.product-detail-img {
  border-radius: 8px; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.product-detail-img img { width: 100%; display: block; }
.product-detail-info h1 {
  font-family: var(--font-serif);
  font-size: 36px; color: var(--navy);
  margin: 0 0 16px;
}
.product-detail-info p {
  font-size: 15px; color: var(--text-secondary);
  line-height: 1.9; margin: 0 0 16px;
}
.product-params-table {
  width: 100%; margin-top: 24px;
  border-collapse: collapse;
}
.product-params-table th,
.product-params-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px; text-align: left;
}
.product-params-table th {
  background: var(--navy-pale);
  color: var(--navy); font-weight: 600;
  width: 140px;
}

/* 解决方案卡片 */
.solution-list-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.solution-card {
  position: relative;
  height: 320px;
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: #fff;
  display: block;
  transition: transform 0.3s;
}
.solution-card:hover { transform: translateY(-4px); }
.solution-card img {
  position: absolute; top:0; left:0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.solution-card:hover img { transform: scale(1.1); }
.solution-card-overlay {
  position: absolute; top:0; left:0; width:100%; height:100%;
  background: linear-gradient(to top, rgba(0,102,204,0.55) 0%, rgba(0,102,204,0.15) 100%);
}
.solution-card-body {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 24px; z-index: 2;
}
.solution-card-name {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 700;
  margin: 0 0 8px;
}
.solution-card-desc {
  font-size: 13px; opacity: 0.85; line-height: 1.5;
}

/* 痛点列表 */
.pain-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pain-point {
  padding: 32px 24px;
  background: var(--navy-pale);
  border-radius: 8px;
  border-top: 3px solid var(--navy);
}
.pain-point-icon {
  width: 48px; height: 48px;
  background: var(--navy); color: #fff;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 16px;
}
.pain-point h4 {
  font-family: var(--font-serif);
  font-size: 18px; color: var(--navy);
  margin: 0 0 12px;
}
.pain-point p {
  font-size: 14px; color: var(--text-secondary);
  line-height: 1.7; margin: 0;
}

/* 优势列表 */
.advantage-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.advantage-item {
  display: flex; gap: 20px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.3s;
}
.advantage-item:hover {
  border-color: var(--navy);
  box-shadow: var(--shadow);
}
.advantage-num {
  font-family: var(--font-metric);
  font-size: 36px; font-weight: 700;
  color: var(--navy-lighter);
  line-height: 1; flex-shrink: 0;
}
.advantage-info h4 {
  font-family: var(--font-serif);
  font-size: 18px; color: var(--navy);
  margin: 0 0 8px;
}
.advantage-info p {
  font-size: 14px; color: var(--text-secondary);
  line-height: 1.7; margin: 0;
}

/* 案例列表 */
.case-list-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}
.case-card {
  background: var(--bg-card);
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: all 0.3s;
  border: 1px solid var(--border);
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--navy);
}
.case-card-img {
  width: 100%; height: 280px;
  overflow: hidden;
}
.case-card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s;
}
.case-card:hover .case-card-img img { transform: scale(1.08); }
.case-card-body { padding: 24px; }
.case-card-tag {
  display: inline-block;
  padding: 2px 10px; font-size: 12px;
  background: var(--navy-pale); color: var(--navy);
  border-radius: 10px; margin-bottom: 12px;
}
.case-card-title {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 700;
  color: var(--navy); margin: 0 0 12px;
}
.case-card-desc {
  font-size: 14px; color: var(--text-muted);
  line-height: 1.6; margin: 0;
}

/* 案例详情 */
.case-detail-hero {
  position: relative;
  height: 500px;
  margin-top: 108px;
  overflow: hidden;
}
.case-detail-hero img {
  width: 100%; height: 100%; object-fit: cover;
}
.case-detail-hero-overlay {
  position: absolute; top:0; left:0; width:100%; height:100%;
  background: linear-gradient(to bottom, rgba(0,102,204,0.35) 0%, rgba(0,102,204,0.55) 100%);
}
.case-detail-hero-content {
  position: absolute; bottom: 60px; left: 0; right: 0;
  z-index: 2;
}
.case-detail-hero-content .container {
  display: flex; align-items: flex-end; justify-content: space-between;
}
.case-detail-hero h1 {
  font-family: var(--font-serif);
  font-size: 40px; color: #fff;
  margin: 0 0 12px;
}
.case-detail-hero p {
  font-size: 16px; color: rgba(255,255,255,0.8);
  margin: 0;
}

/* 细节图轮播 */
.detail-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.detail-gallery-item {
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 4/3;
}
.detail-gallery-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s;
}
.detail-gallery-item:hover img { transform: scale(1.1); }

/* 新闻列表页 */
.news-list-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}
.news-list-main .news-list-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
}
.news-list-main .news-list-item:hover .news-list-item-title { color: var(--navy-light); }
.news-list-item-img {
  width: 240px; height: 160px;
  border-radius: 8px; overflow: hidden;
}
.news-list-item-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s;
}
.news-list-item:hover .news-list-item-img img { transform: scale(1.08); }
.news-list-item-body { display: flex; flex-direction: column; justify-content: center; }
.news-list-item-date {
  font-family: var(--font-metric);
  font-size: 13px; color: var(--navy-lighter);
  margin: 0 0 8px;
}
.news-list-item-title {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 700;
  color: var(--navy); margin: 0 0 12px;
  transition: color 0.2s;
}
.news-list-item-summary {
  font-size: 14px; color: var(--text-muted);
  line-height: 1.6; margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 新闻侧边栏 */
.news-sidebar {
  position: sticky; top: 100px;
}
.news-sidebar-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 24px;
}
.news-sidebar-block h4 {
  font-family: var(--font-serif);
  font-size: 18px; color: var(--navy);
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--navy);
}
.news-sidebar-item {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none; color: inherit;
}
.news-sidebar-item:last-child { border-bottom: none; }
.news-sidebar-item-title {
  font-size: 14px; color: var(--text-primary);
  line-height: 1.5; margin: 0 0 4px;
  transition: color 0.2s;
}
.news-sidebar-item:hover .news-sidebar-item-title { color: var(--navy); }
.news-sidebar-item-date {
  font-family: var(--font-metric);
  font-size: 12px; color: var(--text-muted);
}

/* ========== 新闻详情页 ========== */
.news-detail-header {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, var(--navy) 0%, #0066CC 100%);
  color: #fff;
}
.news-detail-header .breadcrumb { background: transparent !important; padding-left: 0 !important; padding-right: 0 !important; }
.news-detail-header .breadcrumb a:hover { color: #fff; }
.news-detail-cat {
  display: inline-block;
  padding: 4px 14px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  letter-spacing: 1px;
  border-radius: 2px;
  margin-bottom: 16px;
}
.news-detail-title {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.4;
  color: #fff;
  margin: 0 0 20px;
  max-width: 900px;
}
.news-detail-meta {
  display: flex;
  gap: 24px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  font-family: var(--font-metric);
}
.news-detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}
.news-detail-main {
  background: #fff;
  padding: 40px;
  border-radius: 8px;
}
.news-detail-cover {
  margin: 0 0 32px;
  border-radius: 6px;
  overflow: hidden;
}
.news-detail-cover img {
  width: 100%;
  display: block;
}
.news-detail-summary {
  padding: 16px 24px;
  background: var(--navy-pale);
  border-left: 4px solid var(--accent);
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 32px;
  border-radius: 0 4px 4px 0;
}
.news-detail-content p {
  font-size: 16px;
  line-height: 2;
  color: var(--text-primary);
  margin: 0 0 20px;
}
.news-detail-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.news-detail-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: 6px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.2s;
}
.news-detail-nav-item:hover {
  border-color: var(--navy);
  background: var(--navy-pale);
}
.news-detail-nav-item.news-detail-nav-right {
  text-align: right;
}
.news-detail-nav-disabled {
  opacity: 0.5;
  pointer-events: none;
}
.news-detail-nav-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 1px;
}
.news-detail-nav-title {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
@media (max-width: 992px) {
  .news-detail-layout { grid-template-columns: 1fr; }
  .news-detail-title { font-size: 28px; }
  .news-detail-main { padding: 24px; }
  .news-detail-nav { flex-direction: column; }
  .news-detail-nav-item.news-detail-nav-right { text-align: left; }
}

/* 荣誉专利 */
.honor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.honor-item {
  text-align: center;
  padding: 32px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.3s;
}
.honor-item:hover {
  border-color: var(--navy);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.honor-item-icon {
  width: 60px; height: 60px;
  margin: 0 auto 16px;
  background: var(--navy-pale);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; color: var(--navy);
}
.honor-item-name {
  font-family: var(--font-serif);
  font-size: 15px; font-weight: 700;
  color: var(--navy); margin: 0 0 6px;
}
.honor-item-desc {
  font-size: 12px; color: var(--text-muted);
  margin: 0;
}

/* 工厂全景 */
.factory-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
}
.factory-img {
  border-radius: 8px; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.factory-img img { width: 100%; display: block; }
.factory-img-sub { margin-top: 16px; }
.about-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}
.about-gallery img {
  width: 100%;
  display: block;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
@media (max-width: 768px) {
  .about-gallery { grid-template-columns: 1fr; }
}
.factory-text h3 {
  font-family: var(--font-serif);
  font-size: 32px; color: var(--navy);
  margin: 0 0 24px;
}
.factory-text p {
  color: var(--text-secondary);
  font-size: 15px; line-height: 1.9;
  margin: 0 0 16px;
}
.factory-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px; margin-top: 32px;
}
.factory-stat {
  padding: 20px;
  background: var(--navy-pale);
  border-radius: 8px;
}
.factory-stat-num {
  font-family: var(--font-metric);
  font-size: 32px; font-weight: 700;
  color: var(--navy); margin: 0 0 4px;
}
.factory-stat-label {
  font-size: 13px; color: var(--text-muted);
  margin: 0;
}

/* 内页响应式 */
@media (max-width: 1280px) {
  .product-list-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .solution-list-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .news-list-layout { grid-template-columns: 1fr; }
  .news-sidebar { position: static; }
}
@media (max-width: 768px) {
  .page-banner-title { font-size: 28px; }
  .page-banner-gradient-title { font-size: 28px; }
  .page-banner-gradient-desc { font-size: 14px; max-width: 100%; }
  .product-list-grid { grid-template-columns: 1fr; gap: 24px; }
  .product-detail-header { grid-template-columns: 1fr; }
  .solution-list-grid { grid-template-columns: 1fr; }
  .pain-points { grid-template-columns: 1fr; }
  .advantage-list { grid-template-columns: 1fr; }
  .case-list-grid { grid-template-columns: 1fr; }
  .detail-gallery { grid-template-columns: repeat(2, 1fr); }
  .news-list-item { grid-template-columns: 1fr; }
  .news-list-item-img { width: 100%; height: 200px; }
  .honor-grid { grid-template-columns: 1fr; }
  .factory-section { grid-template-columns: 1fr; }
}

/* ============================================
   顶部信息条
   ============================================ */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 36px;
  background: var(--navy);
  z-index: 1001;
  font-size: 13px;
  color: rgba(255,255,255,0.85);
}
.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}
.topbar-left, .topbar-right {
  display: flex; gap: 24px;
}
.topbar-item a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}
.topbar-item a:hover { text-decoration: underline; }

/* 导航CTA按钮改为链接 */
.navbar-cta {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

/* 灰底区块（视觉层次交替） */
.section-gray {
  background: var(--bg-section);
}

/* 首页关于预览：左图右文 */
.about-preview-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
  margin-top: 20px;
}
.about-preview-img {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.about-preview-img img {
  width: 100%;
  display: block;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.about-preview-text h3 {
  font-family: var(--font-serif);
  font-size: 28px;
  color: #fff;
  margin: 0 0 20px;
}
.about-preview-text p {
  font-size: 15px;
  color: rgba(255,255,255,0.8);
  line-height: 1.9;
  margin: 0 0 16px;
}
@media (max-width: 768px) {
  .about-preview-grid { grid-template-columns: 1fr; gap: 30px; }
}

/* 首页关于-企业数据行 */
.about-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
  padding: 32px 20px;
  background: rgba(255,255,255,0.06);
  border-radius: 8px;
}
.about-stat-item {
  text-align: center;
}
.about-stat-num {
  font-family: var(--font-metric);
  font-size: 40px;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 4px;
  line-height: 1;
}
.about-stat-num span {
  font-size: 24px;
  margin-left: 2px;
}
.about-stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  margin: 0;
}

/* 首页关于-工程业绩 */
.about-achievement {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 32px;
  padding: 40px 30px;
  background: rgba(255,255,255,0.04);
  border-top: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
}
.about-achievement-item {
  text-align: center;
  position: relative;
}
.about-achievement-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -15px;
  top: 10%;
  height: 80%;
  width: 1px;
  background: rgba(255,255,255,0.12);
}
.about-achievement-num {
  font-family: var(--font-metric);
  font-size: 52px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 8px;
  line-height: 1;
}
.about-achievement-label {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin: 0;
}
@media (max-width: 768px) {
  .about-stats-row { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .about-stat-num { font-size: 32px; }
  .about-achievement { grid-template-columns: 1fr; gap: 24px; }
  .about-achievement-item:not(:last-child)::after { display: none; }
  .about-achievement-num { font-size: 40px; }
}

/* ============================================
   关于我们 - 认证徽章墙
   ============================================ */
.cert-wall {
  margin-top: 60px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}
.cert-wall-title {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--navy);
  text-align: center;
  margin: 0 0 32px;
}
.cert-wall-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}
.cert-badge {
  text-align: center;
  padding: 28px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.3s;
}
.cert-badge:hover {
  border-color: var(--navy);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.cert-badge-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 12px;
  background: var(--navy-pale);
  color: var(--navy);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-metric);
  font-size: 14px;
  font-weight: 700;
}
.cert-badge-name {
  font-family: var(--font-metric);
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 4px;
}
.cert-badge-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
}

/* ============================================
   关于我们 - 研发实力检测能力网格
   ============================================ */
.rd-capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.rd-capability-item {
  padding: 28px 20px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  text-align: center;
  transition: all 0.3s;
}
.rd-capability-item:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--accent);
  transform: translateY(-4px);
}
.rd-capability-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  background: var(--accent);
  color: var(--navy);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
}
.rd-capability-item h5 {
  font-family: var(--font-serif);
  font-size: 16px;
  color: #fff;
  margin: 0 0 10px;
}
.rd-capability-item p {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  line-height: 1.6;
  margin: 0;
}
@media (max-width: 768px) {
  .cert-wall-grid { grid-template-columns: repeat(2, 1fr); }
  .rd-capability-grid { grid-template-columns: 1fr; }
}

/* ============================================
   留言咨询表单
   ============================================ */
.inquiry-section {
  background: var(--navy-pale);
  padding: 80px 0;
}
.inquiry-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}
.inquiry-info h2 {
  font-family: var(--font-serif);
  font-size: 36px;
  color: var(--navy);
  margin: 0 0 20px;
}
.inquiry-info > p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin: 0 0 32px;
}
.inquiry-contact {
  display: flex;
  gap: 40px;
}
.inquiry-contact-item {
  border-left: 3px solid var(--navy);
  padding-left: 16px;
}
.inquiry-contact-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.inquiry-contact-value {
  font-family: var(--font-metric);
  font-size: 24px;
  font-weight: 700;
  color: var(--navy);
  margin: 0;
}
.inquiry-form {
  background: #fff;
  padding: 40px;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}
.inquiry-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.inquiry-form input,
.inquiry-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-card);
  transition: border-color 0.2s;
  box-sizing: border-box;
}
.inquiry-form input:focus,
.inquiry-form textarea:focus {
  outline: none;
  border-color: var(--navy);
}
.inquiry-form input {
  margin-bottom: 16px;
}
.inquiry-form textarea {
  margin-bottom: 20px;
  resize: vertical;
}
.inquiry-submit {
  width: 100%;
  padding: 14px;
  font-size: 15px;
  border: none;
  cursor: pointer;
}
.inquiry-tip {
  font-size: 13px;
  text-align: center;
  margin: 12px 0 0;
  min-height: 18px;
}

/* ============================================
   悬浮在线客服
   ============================================ */
.float-contact {
  position: fixed;
  right: 20px;
  bottom: 320px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-contact-btn {
  width: 56px;
  height: 56px;
  background: var(--navy);
  color: #fff;
  border: none;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  overflow: hidden;
  position: relative;
}
.float-contact-btn:hover {
  background: var(--navy-light, #2a5a8a);
  width: 160px;
}
.float-contact-icon {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.float-contact-text {
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.3s 0.1s;
  margin-top: 2px;
}
.float-contact-btn:hover .float-contact-text {
  opacity: 1;
}
.float-contact-top {
  background: rgba(0,102,204,0.85);
}

/* ============================================
   配色切换面板
   ============================================ */
.theme-switcher {
  position: fixed;
  right: 20px;
  bottom: 170px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.theme-switcher-btn {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.theme-switcher-btn:hover {
  transform: scale(1.15);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.theme-switcher-btn.active::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  background: rgba(0,0,0,0.3);
  border-radius: 10px;
}
.theme-switcher-btn .tooltip {
  position: absolute;
  right: 52px;
  background: rgba(0,0,0,0.8);
  color: #fff;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
.theme-switcher-btn:hover .tooltip {
  opacity: 1;
}
.theme-switcher-toggle {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  background: var(--navy);
  color: #fff;
  font-size: 18px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}
.theme-switcher-toggle:hover {
  transform: scale(1.1);
}
.theme-switcher-panel {
  display: none;
  flex-direction: column;
  gap: 6px;
}
.theme-switcher-panel.open {
  display: flex;
}
@media (max-width: 768px) {
  .theme-switcher { right: 12px; bottom: 120px; }
  .theme-switcher-btn { width: 38px; height: 38px; }
  .theme-switcher-toggle { width: 38px; height: 38px; }
}

/* ============================================
   页脚二维码
   ============================================ */
.footer-qr {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-qr img {
  width: 80px;
  height: 80px;
  border-radius: 6px;
  border: 1px solid var(--border);
}
.footer-qr span {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* 留言区+悬浮客服响应式 */
@media (max-width: 768px) {
  .topbar-right { display: none; }
  .topbar-left { gap: 12px; font-size: 12px; }
  .inquiry-grid { grid-template-columns: 1fr; gap: 30px; }
  .inquiry-form { padding: 24px; }
  .inquiry-form-row { grid-template-columns: 1fr; }
  .inquiry-contact { flex-direction: column; gap: 16px; }
  .float-contact { right: 12px; bottom: 200px; }
  .float-contact-btn { width: 48px; height: 48px; }
}

/* ============================================
   产品卡片 V2 - CSS渐变+图标方案
   适用于：首页产品区块、产品列表页
   优势：不依赖产品图片素材，视觉专业统一
   ============================================ */
/* 产品卡片 - 极简统一风 */
.product-card-v2 {
  position: relative;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}
.product-card-v2:hover {
  box-shadow: 0 8px 24px -6px rgba(0, 40, 80, 0.12);
  transform: translateY(-2px);
}

/* 视觉区 */
.product-card-v2-visual {
  position: relative;
  height: 200px;
  background: linear-gradient(135deg, #F2F6FA 0%, #E6EDF5 100%);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.product-card-v2-visual img {
  position: relative;
  max-width: 80%;
  max-height: 80%;
  width: auto;
  height: auto;
  object-fit: contain;
  z-index: 2;
  transition: transform 0.4s ease;
  filter: drop-shadow(0 3px 10px rgba(10, 31, 61, 0.08));
}
.product-card-v2:hover .product-card-v2-visual img {
  transform: scale(1.05);
}

/* 分类标签 */
.product-card-v2-cat {
  position: absolute;
  top: 12px; left: 12px;
  font-size: 10px;
  color: rgba(0,0,0,0.3);
  letter-spacing: 0.1em;
  font-weight: 500;
  z-index: 3;
}

/* 内容区 */
.product-card-v2-body {
  padding: 14px 18px 18px;
}
.product-card-v2-name {
  font-size: 16px;
  font-weight: 600;
  color: #1C2C40;
  margin: 0;
  line-height: 1.4;
}
.product-card-v2-name-en,
.product-card-v2-icon,
.product-card-v2-visual::before,
.product-card-v2-visual::after,
.product-card-v2-desc,
.product-card-v2-tags,
.product-card-v2-tag,
.product-card-v2-params,
.product-card-v2-param,
.product-card-v2-param-label,
.product-card-v2-param-value,
.product-card-v2-cta,
.product-card-v2-cta-arrow { display: none; }

/* 响应式 */
@media (max-width: 768px) {
  .product-card-v2-visual { height: 170px; padding: 24px; }
  .product-card-v2-visual img { max-width: 66%; max-height: 74%; }
  .product-card-v2-body { padding: 12px 14px 16px; }
  .product-card-v2-name { font-size: 14px; }
}
@media (max-width: 480px) {
  .product-card-v2-visual { height: 140px; padding: 22px; }
  .product-card-v2-visual img { max-width: 62%; max-height: 72%; }
}

/* ============================================
   产品页 Banner - CSS渐变方案
   ============================================ */
.page-banner-gradient {
  position: relative;
  padding: 160px 0 80px;
  background: linear-gradient(135deg, #004D99 0%, #0066CC 40%, #0088EE 100%);
  overflow: hidden;
}
.page-banner-gradient::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0, 153, 255, 0.18) 0%, transparent 70%);
}
.page-banner-gradient::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
}
.page-banner-gradient-inner {
  position: relative;
  z-index: 2;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
  text-align: center;
}
.page-banner-gradient-label {
  font-family: var(--font-metric);
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--navy-lighter);
  margin: 0 0 12px;
}
.page-banner-gradient-title {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 16px;
  line-height: 1.3;
}
.page-banner-gradient-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  max-width: 700px;
  line-height: 1.8;
  margin: 0;
}
/* 带背景图的Banner变体 - 统一固定比例 */
.page-banner-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3.5 / 1;
}
.page-banner-img .banner-bg {
  position: absolute;
  inset: 0;
}
.page-banner-img .banner-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-banner-img .banner-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.05) 0%, rgba(0, 0, 0, 0.18) 50%, rgba(0, 0, 0, 0.08) 100%);
  pointer-events: none;
}
.page-banner-img .banner-gradient-bar {
  z-index: 2;
}
.page-banner-img .page-banner-gradient-inner {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  pointer-events: none;
}
@media (max-width: 768px) {
  .page-banner-gradient { padding: 120px 0 60px; }
  .page-banner-gradient-title { font-size: 32px; }
  .page-banner-gradient-desc { font-size: 14px; }
}

/* ============================================
   产品详情页 - 大图视觉块（CSS渐变方案）
   ============================================ */
.product-detail-visual {
  position: relative;
  width: 100%;
  height: 500px;
  border-radius: 8px;
  overflow: hidden;
  background: linear-gradient(135deg, #0066CC 0%, #0088EE 50%, #0066CC 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
}
.product-detail-visual.cat-low    { background: linear-gradient(135deg, #0066CC 0%, #0088EE 60%, #0066CC 100%); }
.product-detail-visual.cat-road   { background: linear-gradient(135deg, #0066CC 0%, #3A6EA5 60%, #0066CC 100%); }
.product-detail-visual.cat-tunnel { background: linear-gradient(135deg, #004D99 0%, #0066CC 60%, #0088EE 100%); }
.product-detail-visual.cat-wash   { background: linear-gradient(135deg, #0066CC 0%, #4DA6FF 60%, #6B8DB8 130%); }
.product-detail-visual.cat-linear { background: linear-gradient(135deg, #0066CC 0%, #355E8A 60%, #0066CC 100%); }
.product-detail-visual.cat-flood  { background: linear-gradient(135deg, #0066CC 0%, #4DA6FF 60%, #0099FF 130%); }
.product-detail-visual.cat-strip  { background: linear-gradient(135deg, #0066CC 0%, #3A6EA5 60%, #4DA6FF 100%); }
.product-detail-visual.cat-system { background: linear-gradient(135deg, #004D99 0%, #0088EE 60%, #0099FF 130%); }
.product-detail-visual::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(0, 153, 255, 0.30) 0%, transparent 70%);
}
.product-detail-visual::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--accent) 0%, transparent 100%);
}
.product-detail-visual-icon {
  font-family: var(--font-serif);
  font-size: 260px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.22);
  line-height: 1;
  user-select: none;
  position: relative;
  z-index: 2;
}
.product-detail-visual-cat {
  position: absolute;
  top: 24px; left: 24px;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  font-size: 12px;
  color: #fff;
  letter-spacing: 0.15em;
  z-index: 3;
}
.product-detail-visual-name {
  position: absolute;
  bottom: 24px; left: 24px;
  font-family: var(--font-metric);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.2em;
  z-index: 3;
}
@media (max-width: 768px) {
  .product-detail-visual { height: 320px; }
  .product-detail-visual-icon { font-size: 160px; }
}

/* ============================================
   内页补充样式（案例 / 新闻 / 解决方案 / 关于）
   ============================================ */

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 80px 0;
  color: var(--text-muted);
}
.empty-state-text {
  font-size: 18px;
  margin: 0 0 8px;
}
.empty-state-link {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}
.empty-state-link:hover { color: var(--navy); }

/* 图片占位（无图时显示渐变占位） */
.news-img-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: rgba(255, 255, 255, 0.4);
  font-family: var(--font-metric);
  font-size: 18px;
  letter-spacing: 0.2em;
}

/* 案例详情 */
.case-detail-hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  letter-spacing: 1px;
  border-radius: 2px;
  margin-bottom: 16px;
}
.case-detail-gallery {
  max-width: 1200px;
  margin: 0 auto;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 102, 204, 0.15);
}
.case-detail-gallery img {
  width: 100%;
  display: block;
}
.case-detail-text {
  max-width: 900px;
  margin: 48px auto 0;
}
.case-detail-text .section-label {
  display: block;
  margin-bottom: 8px;
}
.case-detail-text-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 24px;
}
.case-detail-text-body {
  font-size: 16px;
  line-height: 2;
  color: var(--text-secondary);
}
.case-detail-cta {
  text-align: center;
  margin-top: 40px;
}
.case-detail-cta .btn-outline { margin-left: 12px; }

/* 新闻列表工具栏（筛选 + 搜索） */
.news-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.news-toolbar .product-filter { margin-bottom: 0; justify-content: flex-start; }
.news-search {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}
.news-search input {
  height: 40px;
  width: 220px;
  padding: 0 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-card);
  transition: border-color 0.2s;
}
.news-search input:focus {
  outline: none;
  border-color: var(--navy);
}
.news-search button {
  height: 40px;
  padding: 0 24px;
  border: none;
  border-radius: 6px;
  background: var(--navy);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.news-search button:hover { background: var(--navy-light); }

/* 解决方案 - 图文交替区块 */
.solution-feature-list {
  display: flex;
  flex-direction: column;
  gap: 80px;
}
.solution-feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.solution-feature-row.reverse .solution-feature-text {
  order: -1;
}
.solution-feature-img {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
}
.solution-feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}
.solution-feature-row:hover .solution-feature-img img {
  transform: scale(1.05);
}
.solution-feature-img-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: rgba(255, 255, 255, 0.4);
  font-family: var(--font-metric);
  font-size: 22px;
  letter-spacing: 0.2em;
}
.solution-feature-cat {
  display: inline-block;
  padding: 4px 14px;
  background: var(--navy-pale);
  color: var(--navy);
  font-size: 12px;
  letter-spacing: 0.1em;
  border-radius: 20px;
  margin-bottom: 16px;
}
.solution-feature-title {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 16px;
  line-height: 1.3;
}
.solution-feature-subtitle {
  font-size: 16px;
  color: var(--accent);
  font-weight: 500;
  margin: 0 0 16px;
}
.solution-feature-overview {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin: 0 0 24px;
}
.solution-feature-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--navy);
  color: #fff;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
}
.solution-feature-link:hover {
  background: var(--navy-light);
  transform: translateY(-2px);
}
.solution-feature-arrow {
  transition: transform 0.3s;
}
.solution-feature-link:hover .solution-feature-arrow {
  transform: translateX(4px);
}

/* 解决方案详情 - 大图 Banner */
.solution-detail-banner {
  position: relative;
  height: 480px;
  margin-top: 72px;
  overflow: hidden;
  background: linear-gradient(135deg, #004D99 0%, var(--navy) 50%, var(--navy-light) 100%);
}
.solution-detail-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.solution-detail-banner-overlay {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.35) 0%, rgba(0, 102, 204, 0.20) 100%);
}
.solution-detail-banner-content {
  position: absolute;
  bottom: 60px;
  left: 0; right: 0;
  z-index: 2;
}
.solution-detail-banner-label {
  display: block;
  font-family: var(--font-metric);
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin: 0 0 12px;
}
.solution-detail-banner h1 {
  font-family: var(--font-serif);
  font-size: 44px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 12px;
  line-height: 1.3;
}
.solution-detail-banner p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
}

/* 解决方案详情 - 段落区块（背景/概述） */
.solution-detail-block {
  max-width: 900px;
  margin: 0 auto;
}
.solution-detail-block .section-label {
  display: block;
  margin-bottom: 8px;
}
.solution-detail-block-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 24px;
}
.solution-detail-block-text {
  font-size: 16px;
  line-height: 2;
  color: var(--text-secondary);
}

/* 关于我们 - 正文富文本 */
.about-content {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
}
.about-content p { margin: 0 0 16px; }

/* 内页补充响应式 */
@media (max-width: 992px) {
  .solution-feature-row { grid-template-columns: 1fr; gap: 30px; }
  .solution-feature-row.reverse .solution-feature-text { order: 0; }
  .news-toolbar { flex-direction: column; align-items: stretch; }
  .news-search { width: 100%; }
  .news-search input { flex: 1; width: auto; }
}
@media (max-width: 768px) {
  .solution-detail-banner { height: 320px; }
  .solution-detail-banner h1 { font-size: 28px; }
  .solution-detail-banner p { font-size: 15px; }
  .solution-feature-title { font-size: 24px; }
  .case-detail-cta .btn-outline { margin-left: 0; margin-top: 12px; }
  .solution-feature-list { gap: 50px; }
}

/* ============================================
   首页 - 解决方案预览区块
   ============================================ */
.solution-preview-section { background: var(--bg-main); }
.solution-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.solution-preview-card {
  position: relative;
  display: block;
  height: 320px;
  border-radius: 8px;
  overflow: hidden;
  background: linear-gradient(135deg, #004D99 0%, var(--navy) 60%, var(--navy-light) 100%);
  color: #fff;
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.solution-preview-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.solution-preview-featured {
  grid-column: span 2;
  grid-row: span 2;
  height: 100%;
  min-height: 480px;
}
.solution-preview-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.solution-preview-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.solution-preview-card:hover .solution-preview-bg img { transform: scale(1.06); }
.solution-preview-bg-fallback {
  display: block;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 30% 30%, rgba(0, 153, 255, 0.18) 0%, transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(74, 111, 165, 0.25) 0%, transparent 50%);
}
.solution-preview-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(180deg, rgba(0, 77, 153, 0.15) 0%, rgba(0, 77, 153, 0.85) 100%);
}
.solution-preview-content {
  position: absolute;
  inset: 0;
  z-index: 3;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.solution-preview-cat {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-metric);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0, 102, 204, 0.6);
  padding: 4px 10px;
  border-radius: 3px;
  margin-bottom: 12px;
}
.solution-preview-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 8px;
  line-height: 1.3;
  color: #fff;
}
.solution-preview-featured .solution-preview-title { font-size: 30px; }
.solution-preview-subtitle {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin: 0 0 8px;
}
.solution-preview-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  margin: 0 0 16px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.solution-preview-cta {
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.05em;
}
.solution-preview-arrow {
  margin-left: 8px;
  transition: transform 0.3s ease;
}
.solution-preview-card:hover .solution-preview-arrow { transform: translateX(4px); }

/* ============================================
   关于我们 - 研发实力区块
   ============================================ */
.rd-overview {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}
.rd-overview-text p {
  font-size: 16px;
  line-height: 2;
  color: var(--text-secondary);
  margin: 0 0 16px;
}
.rd-overview-text strong { color: var(--navy); font-weight: 700; }
.rd-overview-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 32px;
  background: var(--bg-card);
  border-radius: 8px;
  border-top: 3px solid var(--accent);
  box-shadow: var(--shadow);
}
.rd-overview-stat { text-align: center; }
.rd-overview-stat-num {
  font-family: var(--font-metric);
  font-size: 42px;
  font-weight: 700;
  color: var(--navy);
  margin: 0;
  line-height: 1;
}
.rd-overview-stat-num span { font-size: 24px; color: var(--accent); }
.rd-overview-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin: 8px 0 0;
}

/* CNAS 实验室 */
.rd-lab {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 50px;
  align-items: center;
  margin-bottom: 80px;
}
.rd-lab-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 12px;
}
.rd-lab-visual-card {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: #fff;
  padding: 28px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.rd-lab-visual-label {
  font-family: var(--font-metric);
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.rd-lab-visual-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}
.rd-lab-visual-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}
.rd-lab-visual-img {
  height: 160px;
  border-radius: 8px;
  display: flex;
  align-items: flex-end;
  padding: 16px;
  position: relative;
  overflow: hidden;
}
.rd-lab-visual-img span {
  position: relative;
  z-index: 2;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}
.rd-lab-visual-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0, 77, 153, 0.40) 100%);
}
.rd-lab-visual-img-1 { background: linear-gradient(135deg, #0088EE 0%, #4DA6FF 50%, #6B8DB8 100%); }
.rd-lab-visual-img-2 { background: linear-gradient(135deg, #0066CC 0%, #0088EE 50%, #0066CC 100%); }
.rd-lab-visual-img-3 { background: linear-gradient(135deg, #004D99 0%, #0066CC 60%, #0088EE 100%); }
.rd-lab-text .section-label { display: block; margin-bottom: 8px; }
.rd-lab-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 20px;
}
.rd-lab-text p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin: 0 0 14px;
}
.rd-lab-text strong { color: var(--navy); }
.rd-lab-caps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-top: 24px;
}
.rd-lab-cap {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 4px;
  background: var(--bg-card);
  border-radius: 6px;
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.rd-lab-cap:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.rd-lab-cap-icon {
  width: 36px;
  height: 36px;
  line-height: 36px;
  text-align: center;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  color: #fff;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}
.rd-lab-cap span:last-child {
  font-size: 12px;
  color: var(--text-secondary);
}

/* 资质认证 */
.rd-certs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.rd-cert-item {
  background: var(--bg-card);
  padding: 24px 16px;
  border-radius: 8px;
  border-left: 3px solid var(--accent);
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform 0.2s;
}
.rd-cert-item:hover { transform: translateY(-3px); }
.rd-cert-name {
  display: block;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 6px;
  line-height: 1.4;
}
.rd-cert-desc {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
}

/* ============================================
   解决方案详情 - 行业痛点
   ============================================ */
.pain-points-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pain-point-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 28px 24px;
  background: var(--bg-card);
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}
.pain-point-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.pain-point-num {
  font-family: var(--font-metric);
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  opacity: 0.5;
  flex-shrink: 0;
}
.pain-point-body { flex: 1; }
.pain-point-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 10px;
}
.pain-point-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0;
}
.pain-point-icon {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 28px;
  height: 28px;
  line-height: 28px;
  text-align: center;
  background: rgba(0, 153, 255, 0.12);
  color: var(--accent);
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
}

/* ============================================
   案例详情 - 项目信息与多视角
   ============================================ */
.case-detail-info {
  margin-top: 60px;
  padding: 40px;
  background: var(--bg-card);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.case-detail-info .section-label { display: block; margin-bottom: 8px; }
.case-detail-info .case-detail-text-title { margin-bottom: 28px; }
.case-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-info-item {
  display: flex;
  flex-direction: column;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.case-info-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}
.case-info-value {
  font-size: 15px;
  color: var(--text-primary);
  font-weight: 500;
  line-height: 1.5;
}

.case-detail-perspectives {
  margin-top: 60px;
}
.case-detail-perspectives .section-label { display: block; margin-bottom: 8px; }
.case-perspective-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
}
.case-perspective-item {
  position: relative;
  height: 240px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-section);
}
.case-perspective-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.case-perspective-item:hover img { transform: scale(1.05); }
.case-perspective-label {
  position: absolute;
  bottom: 16px;
  left: 16px;
  z-index: 2;
  display: inline-block;
  padding: 6px 14px;
  background: rgba(0, 102, 204, 0.85);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}
.case-perspective-day img { filter: brightness(1.05) saturate(1.05); }
.case-perspective-night::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(0, 77, 153, 0.45) 0%, rgba(0, 77, 153, 0.2) 100%);
  pointer-events: none;
}
.case-perspective-night img { filter: brightness(0.78) saturate(1.3) hue-rotate(-10deg); }
.case-perspective-detail img { filter: contrast(1.1) saturate(1.1); transform: scale(1.1); }

/* ============================================
   产品详情 - 产品性能
   ============================================ */
.product-performance-section {
  background: linear-gradient(135deg, #004D99 0%, var(--navy) 50%, var(--navy-light) 100%);
  position: relative;
  overflow: hidden;
}
.product-performance-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 28%, rgba(0, 153, 255, 0.10) 0%, transparent 45%),
    radial-gradient(circle at 82% 72%, rgba(74, 111, 165, 0.22) 0%, transparent 45%);
  pointer-events: none;
}
.product-performance-section .container { position: relative; z-index: 1; }
.product-perf-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-perf-item {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}
.product-perf-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 153, 255, 0.4);
  transform: translateY(-3px);
}
.product-perf-value {
  font-family: var(--font-metric);
  font-size: 42px;
  font-weight: 700;
  color: #fff;
  margin: 0;
  line-height: 1;
}
.product-perf-suffix {
  font-size: 18px;
  color: var(--accent);
  margin-left: 4px;
}
.product-perf-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin: 12px 0 0;
  letter-spacing: 0.05em;
}

/* ============================================
   首页关于德洛斯 - 工程数据行
   ============================================ */
.about-engineering {
  display: flex;
  justify-content: center;
  gap: 40px;
  padding: 28px 0 12px;
  border-top: 1px solid rgba(255,255,255,0.15);
  margin-top: 24px;
}
.about-engineering-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.about-engineering-num {
  font-family: var(--font-metric);
  font-size: 30px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.about-engineering-num span {
  font-size: 16px;
  color: var(--accent);
}
.about-engineering-item > span:last-child {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.05em;
}

/* ============================================
   首页4大产品主类区块
   ============================================ */
.home-cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.home-cat-block {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #eef2f7;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.home-cat-block:hover {
  box-shadow: 0 12px 32px rgba(10, 31, 61, 0.08);
  transform: translateY(-3px);
}
.home-cat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 0;
}
.home-cat-name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
  margin: 0;
}
.home-cat-link {
  font-size: 12px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.2s;
  white-space: nowrap;
}
.home-cat-link:hover { opacity: 0.7; }
.home-cat-desc {
  padding: 6px 20px 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-secondary);
}
.home-cat-subs { display: none; }
.home-cat-products {
  padding: 14px 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.home-cat-product {
  display: block;
  text-decoration: none;
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  transition: all 0.25s ease;
}
.home-cat-product:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 20px -6px rgba(14, 58, 111, 0.15);
  transform: translateY(-2px);
}
.home-cat-product-img {
  width: 100%;
  height: 150px;
  overflow: hidden;
  background: linear-gradient(135deg, #EEF2F8 0%, #DDE5EF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  transition: background 0.25s;
}
.home-cat-product:hover .home-cat-product-img {
  background: linear-gradient(135deg, #E8F0FA 0%, #D0DCEE 100%);
}
.home-cat-product-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.3s;
  filter: drop-shadow(0 4px 10px rgba(10, 31, 61, 0.10));
}
.home-cat-product:hover .home-cat-product-img img {
  transform: scale(1.06);
}
.home-cat-product-info {
  padding: 10px 14px 14px;
}
.home-cat-product-model {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.home-cat-product-desc {
  font-size: 11px;
  color: var(--text-muted);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.home-cat-product-params {
  display: flex;
  flex-wrap: wrap;
  gap: 3px 6px;
  margin-top: 6px;
}
.home-cat-product-param {
  font-size: 10px;
  color: #666;
  background: #eef2f7;
  padding: 2px 8px;
  border-radius: 10px;
}
.home-cat-empty {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  padding: 20px 0;
  margin: 0;
}

/* ============================================
   新增区块响应式
   ============================================ */
@media (max-width: 1200px) {
  .solution-preview-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-preview-featured { grid-column: span 2; min-height: 360px; }
  .rd-overview { grid-template-columns: 1fr; gap: 40px; }
  .rd-lab { grid-template-columns: 1fr; gap: 40px; }
  .rd-certs { grid-template-columns: repeat(3, 1fr); }
  .rd-lab-caps { grid-template-columns: repeat(5, 1fr); }
}
@media (max-width: 992px) {
  .pain-points-grid { grid-template-columns: repeat(2, 1fr); }
  .case-info-grid { grid-template-columns: repeat(2, 1fr); }
  .product-perf-grid { grid-template-columns: repeat(2, 1fr); }
  .case-perspective-grid { grid-template-columns: 1fr 1fr; }
  .case-perspective-item:last-child { grid-column: span 2; }
  .home-cat-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
}
@media (max-width: 768px) {
  .solution-preview-grid { grid-template-columns: 1fr; }
  .solution-preview-featured { grid-column: span 1; min-height: 280px; }
  .solution-preview-card { height: 240px; }
  .pain-points-grid { grid-template-columns: 1fr; }
  .case-info-grid { grid-template-columns: 1fr; }
  .product-perf-grid { grid-template-columns: 1fr 1fr; }
  .rd-overview-stats { grid-template-columns: repeat(3, 1fr); padding: 20px; }
  .rd-overview-stat-num { font-size: 32px; }
  .rd-lab-visual { grid-template-columns: 1fr 1fr; }
  .rd-certs { grid-template-columns: repeat(2, 1fr); }
  .rd-lab-caps { grid-template-columns: repeat(3, 1fr); }
  .case-perspective-grid { grid-template-columns: 1fr; }
  .case-perspective-item:last-child { grid-column: span 1; }
  .case-detail-info { padding: 24px; }
  .home-cat-grid { grid-template-columns: 1fr; gap: 8px; }
}

/* 子页面Banner - 固定比例 */
.page-banner-img { position: relative; overflow: hidden; background: var(--navy); aspect-ratio: 10 / 3; }
.page-banner-img.is-large { aspect-ratio: auto; height: clamp(360px, 60vh, 650px); }
.page-banner-img .banner-bg { position: absolute; inset: 0; background: var(--navy); }
.page-banner-img .banner-bg img { width: 100%; height: 100%; object-fit: cover; display: block; }
.page-banner-img .banner-bg picture { display: block; width: 100%; height: 100%; }
.page-banner-img .banner-overlay { position: absolute; inset: 0; z-index: 1; background: linear-gradient(135deg, rgba(15,27,45,0.45) 0%, rgba(15,27,45,0.15) 60%, transparent 100%); pointer-events: none; }
.page-banner-gradient-inner { position: absolute; inset: 0; z-index: 2; display: flex; flex-direction: column; justify-content: center; align-items: center; max-width: 1440px; margin: 0 auto; padding: 108px 40px 0; text-align: center; pointer-events: none; }
.page-banner-gradient-label { font-family: var(--font-metric); font-size: 13px; letter-spacing: 0.3em; color: var(--navy-lighter); text-transform: uppercase; margin-bottom: 16px; }
.page-banner-gradient-title { font-family: var(--font-serif); font-size: 44px; font-weight: 700; color: #fff; margin: 0 0 16px; letter-spacing: 0.04em; }
.page-banner-gradient-desc { font-size: 16px; color: rgba(255,255,255,0.78); max-width: 600px; line-height: 1.8; text-align: center; margin: 0 auto; }
.banner-gradient-bar { position: absolute; bottom: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%); z-index: 3; }

/* ============================================
   产品详情页 PDP - 高端重构
   ============================================ */
.pdp-section { padding-top: 40px; }

/* 头部网格：左图 + 右信息 */
.pdp-header {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 56px;
  align-items: start;
  margin-top: 16px;
}

/* 左侧图集 */
.pdp-gallery { position: sticky; top: 96px; }
.pdp-main-img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 12px;
  overflow: hidden;
  background: linear-gradient(135deg, #EEF2F8 0%, #DDE5EF 100%);
  box-shadow: 0 8px 28px -8px rgba(10, 31, 61, 0.18), 0 2px 8px -2px rgba(10, 31, 61, 0.08);
  cursor: zoom-in;
}
.pdp-main-img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  margin: 0 auto;
  filter: drop-shadow(0 12px 24px rgba(10, 31, 61, 0.15));
  transition: transform 0.5s ease;
}
.pdp-main-img-wrap:hover .pdp-main-img { transform: scale(1.04); }
.pdp-main-cat-badge {
  position: absolute;
  top: 16px; left: 16px;
  padding: 6px 14px;
  background: rgba(14, 58, 111, 0.92);
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.15em;
  border-radius: 20px;
  backdrop-filter: blur(6px);
}
.pdp-zoom-btn {
  position: absolute;
  bottom: 16px; right: 16px;
  width: 40px; height: 40px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  color: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  transition: all 0.2s;
}
.pdp-zoom-btn:hover { background: #fff; transform: scale(1.08); color: var(--accent); }

/* 缩略图 */
.pdp-thumbs {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.pdp-thumb {
  width: 76px; height: 76px;
  border: 2px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: linear-gradient(135deg, #EEF2F8 0%, #DDE5EF 100%);
  cursor: pointer;
  padding: 0;
  transition: all 0.2s;
}
.pdp-thumb img { max-width: 100%; max-height: 100%; object-fit: contain; display: block; margin: auto; }
.pdp-thumb:hover { border-color: var(--navy-lighter); transform: translateY(-2px); }
.pdp-thumb.active { border-color: var(--navy); box-shadow: 0 0 0 2px rgba(14, 58, 111, 0.15); }

/* 右侧信息 */
.pdp-info { padding-top: 8px; }
.pdp-cat-label {
  display: inline-block;
  font-family: var(--font-metric);
  font-size: 12px;
  letter-spacing: 0.25em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 500;
}
.pdp-title {
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
  margin: 0 0 8px;
  letter-spacing: 0.02em;
}
.pdp-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  margin: 0 0 24px;
}

/* 元信息行 */
.pdp-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}
.pdp-meta-item { display: flex; flex-direction: column; gap: 4px; }
.pdp-meta-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}
.pdp-meta-value {
  font-size: 15px;
  color: var(--navy);
  font-weight: 600;
}

/* 关键参数卡片 2x2 */
.pdp-param-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}
.pdp-param-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 18px 16px;
  background: linear-gradient(135deg, #F7FAFD 0%, #EEF3F9 100%);
  border: 1px solid #E2EAF2;
  border-radius: 10px;
  position: relative;
  transition: all 0.25s;
}
.pdp-param-card:hover {
  border-color: var(--navy-lighter);
  box-shadow: 0 4px 14px -4px rgba(14, 58, 111, 0.15);
  transform: translateY(-2px);
}
.pdp-param-card-icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--navy);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 4px;
}
.pdp-param-card-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}
.pdp-param-card-value {
  font-family: var(--font-metric);
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.1;
}

/* CTA 按钮行 */
.pdp-cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.pdp-btn-primary, .pdp-btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.25s;
  cursor: pointer;
}
.pdp-btn-primary {
  background: var(--navy);
  color: #fff;
  border: 1px solid var(--navy);
}
.pdp-btn-primary:hover {
  background: var(--navy-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -6px rgba(14, 58, 111, 0.4);
}
.pdp-btn-outline {
  background: #fff;
  color: var(--navy);
  border: 1px solid var(--border-strong);
}
.pdp-btn-outline:hover {
  border-color: var(--navy);
  color: var(--navy);
  transform: translateY(-2px);
}

/* 产品特性 - 编号列表 */
.pdp-features {
  max-width: 1000px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px 32px;
}
.pdp-feature-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px 24px;
  background: #fff;
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: all 0.25s;
}
.pdp-feature-item:hover {
  border-color: var(--navy-lighter);
  box-shadow: 0 6px 18px -6px rgba(14, 58, 111, 0.12);
  transform: translateY(-2px);
}
.pdp-feature-num {
  flex-shrink: 0;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--navy-pale);
  color: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-metric);
  font-size: 16px;
  font-weight: 700;
}
.pdp-feature-text {
  margin: 0;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-top: 6px;
}

/* 完整参数表 - 美化 */
.pdp-table-wrap {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 2px 12px -4px rgba(10, 31, 61, 0.08);
}
.pdp-params-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.pdp-params-table thead { background: var(--navy); }
.pdp-params-table th {
  padding: 14px 16px;
  color: #fff;
  font-weight: 600;
  text-align: left;
  font-size: 13px;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.pdp-params-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}
.pdp-params-table tbody tr:nth-child(even) { background: #F7FAFD; }
.pdp-params-table tbody tr:nth-child(odd) { background: #fff; }
.pdp-params-table tbody tr:hover {
  background: #E8F1FC;
  color: var(--navy);
}
.pdp-params-table tbody tr:last-child td { border-bottom: none; }
.pdp-params-table td:first-child {
  font-weight: 600;
  color: var(--navy);
  position: sticky;
  left: 0;
  background: inherit;
  box-shadow: 2px 0 4px -2px rgba(0,0,0,0.06);
}
.pdp-params-table tbody tr:nth-child(even) td:first-child { background: #F7FAFD; }
.pdp-params-table tbody tr:nth-child(odd) td:first-child { background: #fff; }
.pdp-params-table tbody tr:hover td:first-child { background: #E8F1FC; }
.pdp-table-wrap { overflow-x: auto; }

/* 图集灯箱 */
.pdp-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(7, 21, 38, 0.92);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
  backdrop-filter: blur(8px);
}
.pdp-lightbox.show { display: flex; }
.pdp-lightbox img {
  max-width: 90vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 12px 48px rgba(0,0,0,0.4);
}
.pdp-lightbox-close {
  position: absolute;
  top: 24px; right: 24px;
  width: 48px; height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.pdp-lightbox-close:hover { background: rgba(255,255,255,0.3); transform: rotate(90deg); }

/* 响应式 */
@media (max-width: 992px) {
  .pdp-header { grid-template-columns: 1fr; gap: 32px; }
  .pdp-gallery { position: static; }
  .pdp-features { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .pdp-title { font-size: 30px; }
  .pdp-param-grid { grid-template-columns: 1fr; }
  .pdp-param-card { padding: 14px; }
  .pdp-param-card-value { font-size: 20px; }
  .pdp-cta-row .pdp-btn-primary, .pdp-cta-row .pdp-btn-outline { flex: 1; justify-content: center; }
  .pdp-thumb { width: 60px; height: 60px; }
  .pdp-meta-row { gap: 16px; }
}

/* ============================================
   详情页侧边锚点导航
   ============================================ */
.pdp-anchor-nav {
  position: fixed;
  left: 24px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 16px 8px;
  border-radius: 30px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 18px -4px rgba(10, 31, 61, 0.10);
}
.pdp-anchor-link {
  display: block;
  padding: 8px 14px;
  font-size: 12px;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: 20px;
  transition: all 0.25s;
  white-space: nowrap;
  text-align: center;
  position: relative;
  cursor: pointer;
}
.pdp-anchor-link:hover { color: var(--navy); background: var(--navy-pale); }
.pdp-anchor-link.active {
  background: var(--navy);
  color: #fff;
  box-shadow: 0 2px 8px -2px rgba(14, 58, 111, 0.4);
}
@media (max-width: 1100px) { .pdp-anchor-nav { display: none; } }

/* ============================================
   产品列表页 - 左侧分类树 + 右侧产品网格
   ============================================ */
.products-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  align-items: flex-start;
}

/* 侧边栏 */
.cat-tree-sidebar {
  position: sticky;
  top: 100px;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(232, 237, 244, 0.6);
  border-radius: 12px;
  overflow: hidden;
}
.cat-tree-header {
  padding: 18px 22px;
  border-bottom: 1px solid rgba(240, 243, 247, 0.5);
  background: linear-gradient(135deg, rgba(247, 250, 253, 0.7) 0%, rgba(238, 242, 248, 0.7) 100%);
}
.cat-tree-header h3 {
  font-size: 14px;
  font-weight: 700;
  color: #1C2C40;
  margin: 0;
  letter-spacing: 0.1em;
}
.cat-tree-nav {
  padding: 8px 0;
  max-height: calc(100vh - 200px);
  overflow-y: auto;
}

/* 全部产品 */
.cat-tree-item {
  display: flex;
  align-items: center;
  padding: 10px 22px;
  font-size: 14px;
  color: #4A5A6E;
  text-decoration: none;
  transition: all 0.2s;
  border-left: 3px solid transparent;
}
.cat-tree-item:hover {
  background: rgba(247, 250, 253, 0.7);
  color: #1C2C40;
}
.cat-tree-item.active {
  color: #0E3A6F;
  font-weight: 600;
  background: rgba(237, 243, 250, 0.6);
  border-left-color: #0E3A6F;
}

/* 一级分类组 */
.cat-tree-group {
  border-left: 3px solid transparent;
}
.cat-tree-group.expanded {
  border-left-color: rgba(14, 58, 111, 0.15);
}
.cat-tree-parent-row {
  display: flex;
  align-items: center;
  padding: 0 22px 0 19px;
}
.cat-tree-arrow {
  display: inline-block;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  cursor: pointer;
  position: relative;
  transition: transform 0.25s ease;
}
.cat-tree-arrow::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 0;
  height: 0;
  border-left: 5px solid #A0B0C4;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  transition: border-color 0.2s;
}
.cat-tree-arrow:hover::before {
  border-left-color: #0E3A6F;
}
.cat-tree-group.expanded > .cat-tree-parent-row .cat-tree-arrow::before,
.cat-tree-sub-group.expanded > .cat-tree-child-row .cat-tree-arrow::before {
  transform: translate(-50%, -50%) rotate(90deg);
  border-left-color: #0E3A6F;
}
.cat-tree-arrow-sm {
  width: 14px;
  height: 14px;
}
.cat-tree-arrow-sm::before {
  border-left-width: 4px;
}
.cat-tree-dot {
  display: inline-block;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  position: relative;
}
.cat-tree-dot::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #C5D1DD;
}

/* 一级分类链接 */
.cat-tree-parent-link {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0 10px 6px;
  font-size: 14px;
  font-weight: 600;
  color: #2A3B52;
  text-decoration: none;
  transition: color 0.2s;
}
.cat-tree-parent-link:hover {
  color: #0E3A6F;
}
.cat-tree-parent-link.active {
  color: #0E3A6F;
}

/* 二级子分类容器 */
.cat-tree-children {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.cat-tree-group.expanded > .cat-tree-children {
  max-height: 2000px;
}

/* 二级分类行 */
.cat-tree-child-row {
  display: flex;
  align-items: center;
  padding: 0 22px 0 36px;
}
.cat-tree-child-link {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 0 7px 4px;
  font-size: 13px;
  color: #5A6E85;
  text-decoration: none;
  transition: color 0.2s;
}
.cat-tree-child-link:hover {
  color: #0E3A6F;
}
.cat-tree-child-link.active {
  color: #0E3A6F;
  font-weight: 600;
}

/* 三级孙分类 */
.cat-tree-grandchildren {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding-left: 20px;
}
.cat-tree-sub-group.expanded > .cat-tree-grandchildren {
  max-height: 1000px;
}
.cat-tree-grandchild-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 22px 5px 16px;
  font-size: 12px;
  color: #7A8B9F;
  text-decoration: none;
  transition: color 0.2s;
  border-left: 2px solid transparent;
}
.cat-tree-grandchild-link:hover {
  color: #0E3A6F;
  background: rgba(247, 250, 253, 0.7);
}
.cat-tree-grandchild-link.active {
  color: #0E3A6F;
  font-weight: 600;
  border-left-color: #0E3A6F;
}

/* 产品数量标签 */
.cat-tree-count {
  font-size: 11px;
  color: #A0B0C4;
  font-weight: 400;
  font-family: var(--font-metric);
  background: rgba(240, 243, 247, 0.6);
  padding: 1px 7px;
  border-radius: 8px;
  min-width: 20px;
  text-align: center;
}
.cat-tree-parent-link.active .cat-tree-count,
.cat-tree-child-link.active .cat-tree-count,
.cat-tree-grandchild-link.active .cat-tree-count {
  background: rgba(214, 228, 245, 0.7);
  color: #0E3A6F;
}

/* 右侧产品区 */
.products-main {
  min-width: 0;
}
.products-main-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 2px solid #EEF2F8;
}
.products-main-header h2 {
  font-size: 24px;
  font-weight: 700;
  color: #1C2C40;
  margin: 0;
}
.products-main-count {
  font-size: 13px;
  color: #8E9DB3;
  font-family: var(--font-metric);
}

/* 带侧边栏的产品网格 - 2列 */
.product-grid-with-sidebar {
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* 空状态 */
.products-empty {
  text-align: center;
  padding: 80px 0;
  color: var(--text-muted);
}
.products-empty p {
  font-size: 18px;
  margin-bottom: 8px;
}

/* 响应式 - 移动端侧边栏变水平折叠 */
@media (max-width: 1024px) {
  .products-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .cat-tree-sidebar {
    position: static;
    max-height: none;
  }
  .cat-tree-nav {
    max-height: 500px;
  }
  .product-grid-with-sidebar {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .product-grid-with-sidebar {
    grid-template-columns: 1fr;
  }
  .cat-tree-nav {
    max-height: 400px;
  }
}


/* ========== 多级分类悬浮导航 (v12.2) ========== */
.nav-dropdown { position: relative; }
.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.nav-dropdown-arrow {
  font-size: 11px;
  color: var(--text-muted);
  transition: transform 0.25s ease;
  display: inline-block;
}
.nav-dropdown:hover .nav-dropdown-arrow {
  transform: rotate(180deg);
  color: var(--navy);
}

/* 大菜单容器 */
.nav-mega-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 20px 60px rgba(14,58,111,0.14), 0 6px 20px rgba(14,58,111,0.08);
  padding: 6px;
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.25s ease;
  pointer-events: none;
  z-index: 1100;
  border: 1px solid var(--border);
}
.nav-dropdown:hover .nav-mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(4px);
  pointer-events: auto;
}

/* 级联面板 */
.nav-cascade-panel {
  display: flex;
  flex-direction: column;
}

/* 一级菜单项 */
.nav-cascade-item {
  position: relative;
}
.nav-cascade-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  border-radius: 6px;
  transition: all 0.2s;
  white-space: nowrap;
}
.nav-cascade-link::after { display: none !important; }
.nav-cascade-link:hover {
  background: var(--navy-pale);
  color: var(--navy);
}
.nav-cascade-text {
  flex: 1;
}
.nav-cascade-arrow {
  margin-left: 12px;
  font-size: 16px;
  color: var(--text-muted);
  transition: transform 0.2s, color 0.2s;
}
.nav-cascade-item.has-sub:hover .nav-cascade-arrow {
  color: var(--navy);
  transform: translateX(2px);
}

/* 二级子菜单 */
.nav-sub-menu {
  position: absolute;
  top: 0;
  left: 100%;
  margin-left: 6px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 20px 60px rgba(14,58,111,0.14), 0 6px 20px rgba(14,58,111,0.08);
  padding: 6px;
  min-width: 240px;
  max-height: 480px;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-6px);
  transition: all 0.25s ease;
  pointer-events: none;
  z-index: 1101;
  border: 1px solid var(--border);
}
.nav-cascade-item.has-sub:hover > .nav-sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
  pointer-events: auto;
}
.nav-sub-menu-inner {
  display: flex;
  flex-direction: column;
}

/* "全部XX" 链接 */
.nav-sub-all {
  display: block;
  padding: 8px 16px;
  color: var(--navy);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
  transition: background 0.2s;
}
.nav-sub-all::after { display: none !important; }
.nav-sub-all:hover {
  background: var(--navy-pale);
}

/* 二级菜单项 */
.nav-sub-item {
  position: relative;
}
.nav-sub-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  border-radius: 6px;
  transition: all 0.2s;
  white-space: nowrap;
}
.nav-sub-link::after { display: none !important; }
.nav-sub-link:hover {
  background: var(--navy-pale);
  color: var(--navy);
}
.nav-sub-text { flex: 1; }
.nav-sub-arrow {
  margin-left: 8px;
}

/* 三级子菜单 */
.nav-sub-menu-3 {
  min-width: 200px;
}
.nav-sub-item.has-sub:hover > .nav-sub-menu-3 {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
  pointer-events: auto;
}
.nav-sub-link-3 {
  font-size: 12px;
  color: var(--text-muted);
  padding: 6px 16px;
}
.nav-sub-link-3:hover {
  color: var(--navy);
}

/* 移动端隐藏多级下拉 */
@media (max-width: 1024px) {
  .nav-mega-menu,
  .nav-sub-menu {
    display: none !important;
  }
}

/* ========== 导航栏高级半透明毛玻璃 (v12.3) ========== */
.topbar {
  background: rgba(14, 58, 111, 0.82) !important;
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
}

.navbar {
  background: rgba(255, 255, 255, 0.72) !important;
  backdrop-filter: blur(22px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.5) inset,
    0 4px 24px rgba(14, 58, 111, 0.05);
}

.nav-mega-menu,
.nav-sub-menu {
  background: rgba(255, 255, 255, 0.80) !important;
  backdrop-filter: blur(22px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

/* 滚动后加深（通过JS添加nav-scrolled类，如无JS则保持半透明） */
.navbar.nav-scrolled {
  background: rgba(255, 255, 255, 0.88) !important;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.6) inset,
    0 6px 28px rgba(14, 58, 111, 0.08);
}

/* ===== 首页：半透明导航栏 + banner上移 ===== */
body:has(#home) .navbar {
  background: rgba(255, 255, 255, 0.65) !important;
  backdrop-filter: blur(24px) saturate(200%) !important;
  -webkit-backdrop-filter: blur(24px) saturate(200%) !important;
  border-bottom: none !important;
  box-shadow: none !important;
}
body:has(#home) .navbar.nav-scrolled {
  background: rgba(255, 255, 255, 0.92) !important;
  backdrop-filter: blur(24px) saturate(200%) !important;
  -webkit-backdrop-filter: blur(24px) saturate(200%) !important;
  box-shadow: 0 4px 24px rgba(14, 58, 111, 0.1) !important;
}
body:has(#home) .banner {
  margin-top: -36px;
}

/* 移动端：首页导航栏不透明，避免padding区域露白 */
@media (max-width: 768px) {
  body:has(#home) .navbar {
    background: rgba(255, 255, 255, 0.95) !important;
  }
  body:has(#home) .banner {
    padding-top: 0 !important;
  }
  .banner-slide img {
    object-fit: cover;
    object-position: center center;
    animation: none !important;
  }
}

/* ========== 导航栏左对齐布局 (v12.4) ========== */

/* navbar-inner 左对齐，CTA推右 */
.navbar-inner {
  justify-content: flex-start !important;
  gap: 48px;
}

/* 菜单从左排列 */
.navbar-menu {
  gap: 36px;
}

/* CTA按钮推到最右侧 */
.navbar-cta {
  margin-left: auto;
}

/* ========== 导航栏产品下拉排版统一 (v12.5) ========== */
.nav-dropdown-toggle {
  position: relative;
  display: flex !important;
  align-items: center;
  gap: 4px;
  color: var(--text-secondary) !important;
  font-size: 15px !important;
  font-weight: 500 !important;
  text-decoration: none !important;
}
.nav-dropdown-toggle::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--navy);
  transition: width 0.3s;
}
.nav-dropdown-toggle:hover::after { width: 100%; }

.nav-dropdown-arrow {
  font-size: 10px;
  color: var(--text-muted);
  transition: transform 0.25s, color 0.25s;
  display: inline-block;
  line-height: 1;
}
.nav-dropdown:hover .nav-dropdown-arrow {
  transform: rotate(180deg);
  color: var(--navy);
}

/* ========== 工程成就配色修复 (v12.6) ========== */
/* 前缀文字（完成/服务/落地） */
.about-engineering-item > span:first-child {
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.05em;
}

/* 数字 - 亮色突出 */
.about-engineering-num {
  color: #fff !important;
  font-family: var(--font-metric) !important;
  font-size: 36px !important;
  font-weight: 700 !important;
  line-height: 1.1 !important;
  text-shadow: 0 2px 12px rgba(255,255,255,0.15);
}

/* 数字后缀（余条/多条/余座）- JS生成的 */
.about-engineering-item .stat-suffix {
  color: rgba(255,255,255,0.65);
  font-size: 18px;
  font-weight: 400;
}

/* 数字内部的小后缀span */
.about-engineering-num span {
  color: rgba(255,255,255,0.65) !important;
  font-size: 18px !important;
}

/* 描述文字（市政道路照明改造/高速公路/特大桥梁亮化） */
.about-engineering-item > span:last-child {
  color: rgba(255,255,255,0.55);
  font-size: 13px;
  letter-spacing: 0.06em;
}

/* 分隔线提亮 */
.about-engineering {
  border-top-color: rgba(255,255,255,0.2) !important;
}


/* ========== Logo 图片样式 (v14.0) ========== */
.navbar-logo-img {
  height: 40px;
  width: auto;
  display: block;
  object-fit: contain;
}

/* ========== Banner picture 标签支持 (v14.0) ========== */
.banner-slide picture {
  display: block;
  width: 100%;
  height: 100%;
}
.banner-slide picture img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}


/* ========== v14.4 移动端综合适配 ========== */

/* (1) topbar 在 ≤768px 隐藏，避免占位 */
@media (max-width: 768px) {
  .topbar { display: none !important; }
  /* navbar 紧贴顶部 */
  .navbar {
    top: 0 !important;
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(12px) saturate(160%);
    -webkit-backdrop-filter: blur(12px) saturate(160%);
  }
  /* navbar 内边距减小 */
  .navbar-inner {
    padding: 0 16px !important;
    height: 56px !important;
    gap: 12px !important;
  }
  .navbar-logo-img { height: 32px !important; }
  /* CTA 按钮移动端隐藏，避免挤压 */
  .navbar-cta { display: none !important; }

  /* === 移动端导航抽屉 === */
  .menu-toggle { display: flex !important; z-index: 1001; }

  .navbar-menu {
    display: flex !important;
    position: fixed;
    top: 56px;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: calc(100vh - 56px);
    background: #fff;
    flex-direction: column;
    gap: 0 !important;
    padding: 12px 0 !important;
    margin: 0 !important;
    list-style: none;
    box-shadow: -4px 0 24px rgba(14, 58, 111, 0.12);
    overflow-y: auto;
    transition: right 0.3s ease;
    z-index: 999;
  }
  .navbar-menu.mobile-open {
    right: 0;
  }

  /* 遮罩 */
  body.nav-menu-open::before {
    content: "";
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(14, 58, 111, 0.35);
    z-index: 998;
  }

  /* 一级菜单项 */
  .navbar-menu > li {
    width: 100%;
    border-bottom: 1px solid rgba(14, 58, 111, 0.06);
  }
  .navbar-menu > li > a,
  .navbar-menu .nav-dropdown-toggle {
    display: block !important;
    width: 100%;
    padding: 14px 20px !important;
    color: #1a2b45 !important;
    font-size: 15px !important;
    font-weight: 500 !important;
    text-align: left;
    border-radius: 0;
  }
  .navbar-menu > li > a:hover,
  .navbar-menu > li > a.active,
  .navbar-menu .nav-dropdown-toggle.active {
    color: #0E3A6F !important;
    background: #F7FAFD;
  }
  .navbar-menu > li > a::after,
  .navbar-menu .nav-dropdown-toggle::after {
    display: none !important;
  }
  .navbar-menu .nav-dropdown-arrow {
    float: right;
    color: #5a6a82 !important;
  }

  /* 移动端下拉展开（替代桌面端 hover 下拉） */
  .nav-mega-menu {
    display: none !important;
    position: static !important;
    width: 100% !important;
    background: #F7FAFD !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: none !important;
    border-top: 1px solid rgba(14, 58, 111, 0.06) !important;
    box-shadow: none !important;
    padding: 0 !important;
  }
  .nav-dropdown.mobile-sub-open > .nav-mega-menu {
    display: block !important;
  }
  .nav-cascade-panel {
    display: block !important;
    padding: 4px 0 !important;
  }
  .nav-cascade-item {
    width: 100%;
    border-bottom: 1px solid rgba(14, 58, 111, 0.04);
  }
  .nav-cascade-link {
    display: block !important;
    padding: 10px 20px 10px 32px !important;
    color: #2c3e5f !important;
    font-size: 14px !important;
  }
  .nav-cascade-text { color: #2c3e5f !important; }
  .nav-cascade-arrow { color: #5a6a82 !important; }

  /* 二级菜单 */
  .nav-sub-menu {
    display: none !important;
    position: static !important;
    background: #EEF3F9 !important;
    backdrop-filter: none !important;
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
    min-width: 100% !important;
  }
  .nav-cascade-item.mobile-sub-open > .nav-sub-menu,
  .nav-sub-item.mobile-sub-open > .nav-sub-menu {
    display: block !important;
  }
  .nav-sub-menu-inner { padding: 4px 0 !important; }
  .nav-sub-all,
  .nav-sub-link {
    display: block !important;
    padding: 8px 20px 8px 48px !important;
    color: #4a5e80 !important;
    font-size: 13px !important;
  }
  .nav-sub-text { color: #4a5e80 !important; }

  /* 三级菜单 */
  .nav-sub-menu-3 {
    background: #E6EDF5 !important;
  }
  .nav-sub-link-3 {
    display: block !important;
    padding: 8px 20px 8px 64px !important;
    color: #5a6a82 !important;
    font-size: 12px !important;
  }

  /* === banner 紧贴 navbar === */
  .banner {
    margin-top: 0 !important;
    padding-top: 0 !important;
    height: 60vh !important;
    min-height: 360px !important;
  }
  /* 桌面端 padding-top 56px (navbar 高度)，移动端设为 56px */
  body:not(.has-detail-sidebar) .banner {
    padding-top: 56px !important;
  }

  /* === 内页 Banner (page-banner-img) 移动端 === */
  .page-banner-gradient-inner {
    padding: 16px !important;
  }
  .page-banner-gradient-title { font-size: 22px !important; }
  .page-banner-gradient-desc { font-size: 13px !important; }

  /* === 面包屑移动端 === */
  .breadcrumb {
    padding: 12px 16px !important;
    font-size: 12px !important;
  }
  .breadcrumb-inline {
    padding: 0 0 14px 0 !important;
    margin: 0 !important;
  }

  /* === 通用 section 间距 === */
  .section { padding: 32px 0 !important; }
  .container { padding: 0 16px !important; }
  .section-header { margin-bottom: 24px !important; }
  .section-title { font-size: 24px !important; }
  .section-desc { font-size: 14px !important; }

  /* === 首页统计区 === */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20px !important;
  }
  .stat-number { font-size: 28px !important; }
  .stat-label { font-size: 12px !important; }

  /* === 产品列表页 === */
  .products-layout {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
  .cat-tree-sidebar {
    position: static !important;
    max-height: 280px !important;
    overflow-y: auto;
    margin-bottom: 16px;
    border: 1px solid rgba(14, 58, 111, 0.08);
    border-radius: 8px;
    padding: 12px;
  }
  .cat-tree-header h3 { font-size: 15px !important; }
  .cat-tree-item,
  .cat-tree-parent-link,
  .cat-tree-child-link,
  .cat-tree-grandchild-link {
    padding: 8px 10px !important;
    font-size: 13px !important;
  }
  .products-main-header h2 { font-size: 18px !important; }
  .products-main-count { font-size: 12px !important; }
  .product-grid-with-sidebar {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 10px !important;
  }
  .product-card-v2-visual { height: 140px !important; }
  .product-card-v2-name { font-size: 12px !important; }
  .product-card-v2-cat { font-size: 10px !important; padding: 3px 8px !important; }

  /* === 产品详情页 (detail_aa) === */
  .pdp-header {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }
  .pdp-gallery { position: static !important; }
  .pdp-title { font-size: 22px !important; }
  .pdp-features { grid-template-columns: 1fr !important; }
  .pdp-param-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 10px !important; }
  .pdp-param-card { padding: 12px !important; }
  .pdp-param-card-value { font-size: 16px !important; }
  .pdp-param-card-label { font-size: 11px !important; }
  .pdp-cta-row { flex-direction: column !important; gap: 10px !important; }
  .pdp-cta-row .pdp-btn-primary,
  .pdp-cta-row .pdp-btn-outline {
    width: 100% !important;
    justify-content: center !important;
  }
  .pdp-anchor-nav { display: none !important; }
  /* 产品规格表 */
  .spec-table { font-size: 12px !important; }
  .spec-table th, .spec-table td { padding: 6px 8px !important; }

  /* === 新闻列表页 === */
  .news-list {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
  .news-card {
    flex-direction: column !important;
  }
  .news-card-img { width: 100% !important; height: 180px !important; }
  .news-card-body { padding: 14px !important; }
  .news-card-title { font-size: 16px !important; }
  .news-card-excerpt { font-size: 13px !important; -webkit-line-clamp: 2; }
  .news-toolbar {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 10px !important;
  }
  .news-search { width: 100% !important; }
  .news-search input { width: 100% !important; }

  /* === 新闻详情页 === */
  .news-detail-title { font-size: 22px !important; }
  .news-detail-meta { font-size: 12px !important; flex-wrap: wrap; gap: 8px !important; }
  .news-detail-content { font-size: 14px !important; line-height: 1.8 !important; }
  .news-detail-content img { max-width: 100% !important; height: auto !important; }

  /* === 案例列表页 === */
  .cases-grid,
  .cases-list {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
  .case-card-img { height: 200px !important; }
  .case-card-title { font-size: 16px !important; }
  .case-card-desc { font-size: 13px !important; -webkit-line-clamp: 2; }

  /* === 案例详情页 === */
  .case-detail-title { font-size: 22px !important; }
  .case-detail-content { font-size: 14px !important; line-height: 1.8 !important; }
  .case-detail-content img { max-width: 100% !important; height: auto !important; }

  /* === 关于我们 === */
  .about-hero { padding: 32px 0 !important; }
  .about-hero h1 { font-size: 26px !important; }
  .about-content { font-size: 14px !important; }

  /* === 详情页侧栏在移动端隐藏 === */
  .detail-floating-sidebar { display: none !important; }
  body.has-detail-sidebar { padding-left: 0 !important; }

  /* === 留言区 === */
  .inquiry-grid { grid-template-columns: 1fr !important; gap: 20px !important; }
  .inquiry-form { padding: 16px !important; }
  .inquiry-form-row { grid-template-columns: 1fr !important; }

  /* === 页脚移动端 === */
  .footer-grid {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
    padding: 32px 0 !important;
  }
  .footer-brand { text-align: center; }
  .footer-certs { justify-content: center; }
  .footer-qr { justify-content: center; }
  .footer-bottom { font-size: 11px !important; padding: 12px 16px !important; }

  /* === 悬浮按钮 === */
  .float-contact {
    right: 12px !important;
    bottom: 60px !important;
    flex-direction: column !important;
    gap: 8px !important;
  }
  .float-contact-btn { width: 44px !important; height: 44px !important; }
  .float-contact-text { display: none !important; }
  .float-contact-icon { font-size: 11px !important; }
}

/* (2) 平板 (769-1024px) 微调 */
@media (max-width: 1024px) and (min-width: 769px) {
  .navbar-menu { gap: 20px !important; }
  .navbar-inner { padding: 0 20px !important; }
  .navbar-cta { padding: 8px 16px !important; font-size: 13px !important; }
  .product-grid-with-sidebar {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .products-layout {
    grid-template-columns: 220px 1fr !important;
    gap: 20px !important;
  }
}

/* (3) 汉堡按钮动画 */
.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}


/* ========== v14.5 Mobile Deep Optimization ========== */

/* 全局移动端基础优化 */
@media (max-width: 768px) {
  /* iOS 禁止自动缩放：表单元素字号至少 16px */
  input, select, textarea, button {
    font-size: 16px !important;
  }

  /* 移除 iOS 点击灰色高亮 */
  * {
    -webkit-tap-highlight-color: transparent;
  }

  /* 平滑滚动 */
  body {
    -webkit-overflow-scrolling: touch;
    overflow-scrolling: touch;
    text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%;
  }

  /* 导航文字不可选中，避免长按弹菜单 */
  .navbar, .navbar-menu, .menu-toggle {
    -webkit-user-select: none;
    user-select: none;
  }

  /* === 汉堡按钮位置修复 === */
  .menu-toggle {
    margin-left: auto !important;
    padding: 10px !important;
    width: 44px !important;
    height: 44px !important;
    justify-content: center;
    align-items: center;
  }
  .menu-toggle span {
    width: 22px !important;
  }

  /* navbar-inner 移动端布局 */
  .navbar-inner {
    justify-content: flex-start !important;
  }

  /* navbar 安全区域 */
  .navbar {
    padding-top: env(safe-area-inset-top) !important;
    height: calc(56px + env(safe-area-inset-top)) !important;
  }
  .navbar-menu {
    top: calc(56px + env(safe-area-inset-top)) !important;
    height: calc(100vh - 56px - env(safe-area-inset-top)) !important;
    padding-bottom: env(safe-area-inset-bottom) !important;
  }

  /* 移动端 logo 居中显示效果（绝对定位居中） */
  .navbar-logo {
    flex: 1;
    justify-content: center;
    margin-right: 44px; /* 抵消右侧汉堡按钮宽度，使logo视觉居中 */
  }
  .navbar-logo-img {
    height: 30px !important;
  }

  /* === Banner 高度优化 ===
     9:16 比例，比 60vh 更合理
     避免内容被压缩 */
  .banner {
    height: 56vh !important;
    min-height: 320px !important;
    max-height: 480px !important;
    padding-top: calc(56px + env(safe-area-inset-top)) !important;
  }
  body:not(.has-detail-sidebar) .banner {
    padding-top: calc(56px + env(safe-area-inset-top)) !important;
  }

  /* Banner 文字优化 */
  .banner-content {
    padding: 0 20px !important;
  }
  .banner-title {
    font-size: 26px !important;
    line-height: 1.3 !important;
  }
  .banner-subtitle {
    font-size: 14px !important;
    line-height: 1.6 !important;
  }

  /* 内页 Banner 统一使用图片自适应 */
  /* 已由 page-banner-img 通用样式处理 */

  /* === 详情页内容间距优化 === */
  .pdp-detail,
  .news-detail-content,
  .case-detail-content,
  .about-content {
    padding: 20px 0 !important;
  }
  .pdp-detail > *,
  .news-detail-content > *,
  .case-detail-content > *,
  .about-content > * {
    margin-bottom: 20px;
  }

  /* 详情页图片自适应 */
  .pdp-detail img,
  .news-detail-content img,
  .case-detail-content img,
  .about-content img {
    max-width: 100% !important;
    height: auto !important;
    border-radius: 8px;
  }

  /* 详情页标题间距 */
  .pdp-title,
  .news-detail-title,
  .case-detail-title {
    margin-top: 16px !important;
    margin-bottom: 12px !important;
    line-height: 1.35 !important;
  }

  /* 详情页元数据 */
  .pdp-meta-row,
  .news-detail-meta,
  .case-detail-meta {
    margin-bottom: 20px !important;
    padding-bottom: 16px !important;
    border-bottom: 1px solid rgba(14, 58, 111, 0.08) !important;
    flex-wrap: wrap !important;
    gap: 12px !important;
  }

  /* 产品参数表格移动端优化 */
  .spec-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0 -16px;
    padding: 0 16px;
  }
  .spec-table {
    min-width: 480px;
    font-size: 12px !important;
  }
  .spec-table th, .spec-table td {
    padding: 8px 10px !important;
    white-space: normal;
    word-break: break-word;
  }

  /* === 产品/案例/新闻卡片优化 === */
  .product-card-v2,
  .news-card,
  .case-card {
    border-radius: 10px !important;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(14, 58, 111, 0.06) !important;
    transition: transform 0.2s, box-shadow 0.2s;
  }
  .product-card-v2:active,
  .news-card:active,
  .case-card:active {
    transform: scale(0.98);
    box-shadow: 0 4px 16px rgba(14, 58, 111, 0.12) !important;
  }

  /* 产品卡片图片高度 */
  .product-card-v2-visual {
    height: 160px !important;
  }

  /* 卡片标题/内容 */
  .product-card-v2-body,
  .news-card-body,
  .case-card-body {
    padding: 12px !important;
  }
  .product-card-v2-name {
    font-size: 13px !important;
    line-height: 1.4 !important;
    margin-bottom: 4px !important;
  }
  .product-card-v2-cat {
    font-size: 10px !important;
    padding: 2px 8px !important;
  }

  /* === 触摸目标优化（按钮、链接至少 44x44） === */
  .btn,
  .navbar-cta,
  .pdp-btn-primary,
  .pdp-btn-outline,
  .inquiry-submit {
    min-height: 44px !important;
    padding: 12px 20px !important;
    font-size: 14px !important;
  }

  /* 悬浮按钮安全区域 */
  .float-contact {
    bottom: calc(20px + env(safe-area-inset-bottom)) !important;
    right: calc(12px + env(safe-area-inset-right)) !important;
  }

  /* 页脚安全区域 */
  .footer-bottom {
    padding-bottom: calc(12px + env(safe-area-inset-bottom)) !important;
  }

  /* === 阅读体验优化 === */
  .news-detail-content,
  .case-detail-content,
  .about-content {
    font-size: 15px !important;
    line-height: 1.85 !important;
    color: #2c3e5f !important;
    letter-spacing: 0.01em;
  }
  .news-detail-content p,
  .case-detail-content p,
  .about-content p {
    margin: 0 0 16px !important;
  }
  .news-detail-content h2,
  .case-detail-content h2,
  .about-content h2 {
    font-size: 20px !important;
    margin: 24px 0 12px !important;
  }
  .news-detail-content h3,
  .case-detail-content h3,
  .about-content h3 {
    font-size: 17px !important;
    margin: 20px 0 10px !important;
  }

  /* === 面包屑触摸优化 === */
  .breadcrumb a {
    padding: 6px 0 !important;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
  }

  /* === 产品列表左侧分类树移动端优化 === */
  .cat-tree-sidebar {
    max-height: 240px !important;
    border-radius: 12px !important;
    background: #F7FAFD !important;
    padding: 14px !important;
  }
  .cat-tree-header {
    padding-bottom: 10px !important;
    margin-bottom: 8px !important;
    border-bottom: 1px solid rgba(14, 58, 111, 0.08) !important;
  }
  .cat-tree-header h3 {
    font-size: 14px !important;
    color: #0E3A6F !important;
  }
  .cat-tree-item,
  .cat-tree-parent-link,
  .cat-tree-child-link,
  .cat-tree-grandchild-link {
    padding: 10px 12px !important;
    font-size: 13px !important;
    min-height: 36px;
    display: flex;
    align-items: center;
    border-radius: 6px;
    transition: background 0.15s;
  }
  .cat-tree-item:active,
  .cat-tree-parent-link:active,
  .cat-tree-child-link:active {
    background: rgba(14, 58, 111, 0.08);
  }
  .cat-tree-item.active,
  .cat-tree-parent-link.active,
  .cat-tree-child-link.active {
    background: #0E3A6F !important;
    color: #fff !important;
  }

  /* === 统计数字优化 === */
  .stats-grid {
    gap: 16px !important;
  }
  .stat-item {
    padding: 16px 8px !important;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
  }
  .stat-number {
    font-size: 24px !important;
    line-height: 1.2 !important;
  }
  .stat-label {
    font-size: 11px !important;
    margin-top: 4px !important;
  }

  /* === 产品详情参数卡片 === */
  .pdp-param-grid {
    gap: 8px !important;
  }
  .pdp-param-card {
    padding: 10px !important;
    background: #F7FAFD !important;
    border-radius: 8px !important;
    border: 1px solid rgba(14, 58, 111, 0.06) !important;
  }
  .pdp-param-card-value {
    font-size: 18px !important;
    color: #0E3A6F !important;
    margin-top: 4px !important;
  }
  .pdp-param-card-label {
    font-size: 11px !important;
    color: #5a6a82 !important;
  }

  /* === Section 间距优化 === */
  .section {
    padding: 28px 0 !important;
  }
  .section-header {
    margin-bottom: 20px !important;
    padding: 0 4px !important;
  }
  .section-title {
    font-size: 22px !important;
    line-height: 1.35 !important;
    margin-bottom: 6px !important;
  }
  .section-label {
    font-size: 11px !important;
    letter-spacing: 0.08em !important;
  }
  .section-desc {
    font-size: 13px !important;
    line-height: 1.6 !important;
  }

  /* 容器内边距 */
  .container {
    padding: 0 16px !important;
  }

  /* === 留言表单优化 === */
  .inquiry-form input,
  .inquiry-form textarea,
  .inquiry-form select {
    padding: 12px 14px !important;
    border-radius: 8px !important;
    border: 1px solid rgba(14, 58, 111, 0.15) !important;
    min-height: 44px;
  }
  .inquiry-form input:focus,
  .inquiry-form textarea:focus,
  .inquiry-form select:focus {
    border-color: #0E3A6F !important;
    outline: none !important;
  }

  /* === 关于我们页面 === */
  .about-hero {
    padding: 32px 0 !important;
    text-align: center;
  }
  .about-hero h1 {
    font-size: 24px !important;
    margin-bottom: 12px !important;
  }
  .about-engineering {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 16px !important;
  }
  .about-engineering-item {
    padding: 16px !important;
    text-align: center;
  }
  .about-engineering-num {
    font-size: 26px !important;
  }

  /* === 隐藏桌面端装饰 === */
  .pdp-anchor-nav,
  .detail-floating-sidebar {
    display: none !important;
  }

  /* === 抽屉内导航滚动优化 === */
  .navbar-menu {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
  }

  /* 抽屉中链接触摸目标 */
  .navbar-menu > li > a,
  .navbar-menu .nav-dropdown-toggle,
  .nav-cascade-link,
  .nav-sub-link,
  .nav-sub-link-3,
  .nav-sub-all {
    min-height: 44px;
    display: flex !important;
    align-items: center;
  }

  /* 关闭抽屉的 X 按钮（右上角） */
  .navbar-menu.mobile-open::before {
    content: "✕";
    position: sticky;
    top: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    height: 44px;
    padding: 0 20px;
    font-size: 18px;
    color: #5a6a82;
    background: #fff;
    border-bottom: 1px solid rgba(14, 58, 111, 0.06);
    z-index: 1;
    pointer-events: none;
    margin-bottom: -44px;
  }

  /* === 横屏适配 === */
  @media (max-width: 768px) and (orientation: landscape) {
    .banner {
      height: 90vh !important;
      min-height: 280px !important;
    }
    .navbar-menu {
      width: 60% !important;
      max-width: 280px;
    }
  }
}

/* === 超小屏 (≤360px) 优化 === */
@media (max-width: 360px) {
  .banner-title {
    font-size: 22px !important;
  }
  .product-grid-with-sidebar {
    grid-template-columns: 1fr !important;
  }
  .stat-number {
    font-size: 20px !important;
  }
  .navbar-logo-img {
    height: 26px !important;
  }
  .container {
    padding: 0 12px !important;
  }
}

/* === 平板 (769-1024px) 进一步优化 === */
@media (max-width: 1024px) and (min-width: 769px) {
  .navbar-menu { gap: 20px !important; }
  .navbar-inner { padding: 0 20px !important; }
  .navbar-cta { padding: 8px 16px !important; font-size: 13px !important; }
  .product-grid-with-sidebar {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .products-layout {
    grid-template-columns: 220px 1fr !important;
    gap: 20px !important;
  }
  .banner {
    height: 70vh !important;
    min-height: 480px !important;
  }
}





/* ========== 板块过渡带 - 方案B 浅色渐变 ========== */
.section-transition {
    height: 44px;
    background: linear-gradient(180deg,
        #ffffff 0%,
        #EBF2FA 40%,
        #EBF2FA 60%,
        #f5f6fa 100%
    );
    position: relative;
}
.section-transition::after {
    content: ;
    position: absolute;
    left: 50%;
    bottom: 14px;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #C8A45C;
    opacity: 0.5;
}