/* ===================================================================
   全新设计 v2 - 顶部导航与首页重做
   该文件覆盖老版本样式，需在 style.css 之后引入
   =================================================================== */

:root {
  --nx-primary: #1d4ed8;
  --nx-primary-dark: #1e40af;
  --nx-primary-light: #13407d;
  --nx-accent: #f59e0b;
  --nx-text: #0f172a;
  --nx-text-light: #475569;
  --nx-text-muted: #94a3b8;
  --nx-bg: #ffffff;
  --nx-bg-soft: #f8fafc;
  --nx-bg-cool: #f1f5f9;
  --nx-border: #e2e8f0;
  --nx-shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --nx-shadow: 0 4px 12px rgba(15, 23, 42, .08);
  --nx-shadow-lg: 0 12px 32px rgba(15, 23, 42, .12);
  --nx-radius: 10px;
  --nx-radius-lg: 16px;
}

/* ===================================================================
   1. 顶部通栏 - 改造为简洁信息条
   =================================================================== */
.top-strip {
  background: linear-gradient(90deg, #0f172a 0%, #1e293b 100%);
  color: #cbd5e1;
  font-size: 13px;
  height: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.top-strip .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 20px;
}

.top-strip .top-welcome {
  color: #cbd5e1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.top-strip .top-welcome::before {
  content: "\f3fd";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--nx-accent);
  font-size: 13px;
}

.top-strip .top-info {
  display: inline-flex;
  align-items: center;
  gap: 22px;
  margin-left: 26px;
  color: #94a3b8;
  font-size: 12.5px;
}

.top-strip .top-info span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.top-strip .top-info i {
  color: var(--nx-accent);
  font-size: 12px;
}

.top-strip .top-right {
  display: flex;
  align-items: center;
  gap: 0;
}

.top-strip .dark-mode-toggle {
  color: #cbd5e1;
  padding: 0 14px;
  height: 40px;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0;
  transition: all .25s ease;
}

.top-strip .dark-mode-toggle:hover {
  color: var(--nx-accent);
  background: rgba(245, 158, 11, 0.08);
}

.top-strip .dark-mode-toggle i {
  font-size: 14px;
}

.top-strip .dark-mode-toggle span {
  font-size: 12.5px;
}

.top-strip .pc-lang-switcher {
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  height: 40px;
  display: flex;
  align-items: center;
  position: relative;
}

/* 隐藏微软翻译 widget 的自带 UI（仅保留我们的自定义切换器） */
.top-translate > *:not(.pc-lang-switcher) {
  display: none !important;
}

.top-strip .pc-lang-btn {
  height: 40px;
  padding: 0 14px;
  border-radius: 0;
  color: #cbd5e1;
  font-size: 12.5px;
}

.top-strip .pc-lang-btn:hover,
.top-strip .pc-lang-btn:focus {
  color: var(--nx-accent);
  background: rgba(245, 158, 11, 0.08);
  outline: none;
}

.top-strip .pc-lang-btn i:first-child {
  color: var(--nx-accent);
}

/* ===================================================================
   2. 主导航 - 单行布局：Logo + Nav + 工具
   =================================================================== */
.header {
  background: #ffffff;
  position: sticky;
  top: 0;
  z-index: 999;
  border-bottom: 1px solid var(--nx-border);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
  transition: all 0.3s ease;
}

.header.is-scrolled {
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.header.is-scrolled .nx-header-row { height: 60px; }
.header.is-scrolled .nx-logo-icon { width: 38px; height: 38px; font-size: 17px; }

/* 旧版两层结构高度统一隐藏 */
.header-top,
.header-nav-wrap {
  display: none;
}

/* 全新单行布局 */
.nx-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
  gap: 32px;
}

.nx-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.nx-logo img {
  max-height: 68px;
  max-width: 200px;
  height: auto;
  width: auto;
  object-fit: contain;
}

.nx-logo-icon { display: none; }

.nx-logo-text {
  font-size: 32px;
  font-weight: 900;
  color: var(--nx-primary);
  letter-spacing: 4px;
  line-height: 1;
  background: linear-gradient(135deg, var(--nx-primary) 0%, var(--nx-primary-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-family: system-ui, sans-serif;
}

.nx-logo-cn,
.nx-logo-en { display: none; }

/* 导航菜单 */
.nx-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nx-nav .nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nx-nav .nav-menu > li {
  position: relative;
}

.nx-nav .nav-menu > li > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  color: var(--nx-text);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  border-radius: 8px;
  position: relative;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.nx-nav .nav-menu > li > a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 2px;
  background: var(--nx-primary);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width 0.3s ease;
}

.nx-nav .nav-menu > li > a:hover,
.nx-nav .nav-menu > li.nx-active > a,
.nx-nav .nav-menu > li.active > a {
  color: var(--nx-primary);
}

.nx-nav .nav-menu > li > a:hover::after,
.nx-nav .nav-menu > li.nx-active > a::after,
.nx-nav .nav-menu > li.active > a::after {
  width: calc(100% - 32px);
}

/* 箭头已通过 HTML 中的 <i class="fas fa-chevron-down nav-arrow"></i> 实现,删除 CSS 生成的箭头 */

/* 下拉菜单 */
.nx-nav .dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, 8px);
  min-width: 200px;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 16px 48px rgba(15, 23, 42, 0.12), 0 4px 12px rgba(15, 23, 42, 0.06);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
  z-index: 1000;
  list-style: none;
  border: 1px solid var(--nx-border);
}

.nx-nav .has-dropdown:hover > .dropdown,
.nx-nav .has-dropdown:focus-within > .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.nx-nav .dropdown li {
  list-style: none;
}

.nx-nav .dropdown a {
  display: block;
  padding: 10px 16px;
  color: var(--nx-text-light);
  font-size: 14px;
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.2s ease;
  position: relative;
  white-space: nowrap;
}

.nx-nav .dropdown a:hover,
.nx-nav .dropdown a.active {
  color: var(--nx-primary);
  padding-left: 22px;
}

.nx-nav .dropdown a.active {
  font-weight: 600;
}

.nx-nav .dropdown a::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--nx-primary);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.nx-nav .dropdown a:hover::before {
  opacity: 1;
}

/* 嵌套下拉菜单（2-4级） */
.nx-nav .dropdown li.has-dropdown {
  position: relative;
}
.nx-nav .dropdown li.has-dropdown > a {
  padding-right: 28px;
}
.nx-nav .dropdown li.has-dropdown > a::after {
  content: "\f054";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 10px;
  color: var(--nx-text-muted);
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  transition: transform 0.2s ease;
}
.nx-nav .dropdown li.has-dropdown:hover > a::after {
  color: var(--nx-primary);
  transform: translateY(-50%) translateX(2px);
}
.nx-nav .dropdown .dropdown {
  position: absolute;
  top: 0;
  left: 100%;
  transform: translate(8px, 0);
  min-width: 200px;
  margin: 0;
  z-index: 1001;
}
.nx-nav .dropdown li.has-dropdown:hover > .dropdown,
.nx-nav .dropdown li.has-dropdown:focus-within > .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translate(0, 0);
}
.nx-nav .dropdown .dropdown .dropdown {
  z-index: 1002;
}
.nx-nav .dropdown .dropdown .dropdown .dropdown {
  z-index: 1003;
}

/* 右侧工具区 */
.nx-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nx-search-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--nx-border);
  background: var(--nx-bg-soft);
  color: var(--nx-text-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
  font-size: 14px;
}

.nx-search-btn:hover {
  background: var(--nx-primary);
  border-color: var(--nx-primary);
  color: #ffffff;
  transform: rotate(15deg);
}

.nx-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: linear-gradient(135deg, var(--nx-primary) 0%, var(--nx-primary-light) 100%);
  color: #ffffff;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(29, 78, 216, 0.25);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.nx-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(29, 78, 216, 0.35);
  color: #ffffff;
}

.nx-cta i {
  font-size: 13px;
}

/* 移动端菜单按钮 */
.nx-mobile-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--nx-border);
  border-radius: 10px;
  background: var(--nx-bg-soft);
  cursor: pointer;
  gap: 4px;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  z-index: 1001;
  pointer-events: auto !important;
}

.nx-mobile-btn span {
  width: 18px;
  height: 2px;
  background: var(--nx-text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nx-mobile-btn.active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nx-mobile-btn.active span:nth-child(2) {
  opacity: 0;
}

.nx-mobile-btn.active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* 移动端菜单覆盖层 - 实际样式见底部响应式章节 */
.nx-mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1500;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  pointer-events: none;
}

.nx-mobile-menu.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.nx-mobile-menu-inner {
  position: absolute;
  top: 0;
  right: 0;
  width: 84%;
  max-width: 360px;
  height: 100%;
  background: #ffffff;
  padding: 24px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1501;
}

.nx-mobile-menu.active .nx-mobile-menu-inner {
  transform: translateX(0);
}

/* ===================================================================
   3. 首页 - 全屏 Hero
   =================================================================== */
.nx-hero {
  position: relative;
  height: 620px;
  overflow: hidden;
  background: #0f172a;
}

.nx-hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
}

.nx-hero-slide.active {
  opacity: 1;
}

.nx-hero-slide::before {
  content: "";
  position: absolute;
  inset: 0;
 
  z-index: 1;
}

.nx-hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  transition: transform 6s ease;
}

.nx-hero-slide.active img {
  transform: scale(1);
}

.nx-hero-content {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  z-index: 2;
}

.nx-hero-inner {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 20px;
}

.nx-hero-text {
  max-width: 720px;
  color: #ffffff;
}

.nx-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(245, 158, 11, 0.18);
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: 999px;
  color: #fbbf24;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
}

.nx-hero-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fbbf24;
  box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.3);
  animation: nxPulse 2s ease-in-out infinite;
}

@keyframes nxPulse {
  50% { box-shadow: 0 0 0 8px rgba(245, 158, 11, 0); }
}

.nx-hero-text h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 18px;
  letter-spacing: -0.5px;
}

.nx-hero-text h1 .accent {
  background: linear-gradient(120deg, #fbbf24 0%, #f59e0b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
}

.nx-hero-text p {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 32px;
  max-width: 560px;
}

.nx-hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.nx-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.nx-btn-primary {
  background: linear-gradient(135deg, var(--nx-primary) 0%, var(--nx-primary-light) 100%);
  color: #ffffff;
  box-shadow: 0 8px 20px rgba(29, 78, 216, 0.3);
}

.nx-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(29, 78, 216, 0.45);
  color: #ffffff;
}

.nx-btn-outline {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(8px);
}

.nx-btn-outline:hover {
  background: #ffffff;
  color: var(--nx-primary);
  transform: translateY(-2px);
}

/* Hero 搜索 */
.nx-hero-search {
  display: flex;
  align-items: center;
  max-width: 560px;
  margin-top: 32px;
  background: #ffffff;
  border-radius: 999px;
  padding: 6px 6px 6px 22px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.nx-hero-search i {
  color: var(--nx-text-muted);
  font-size: 16px;
  margin-right: 12px;
}

.nx-hero-search input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 15px;
  padding: 12px 0;
  color: var(--nx-text);
}

.nx-hero-search button {
  border: none;
  background: linear-gradient(135deg, var(--nx-primary) 0%, var(--nx-primary-light) 100%);
  color: #ffffff;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.nx-hero-search button:hover {
  transform: translateX(2px);
}

/* 轮播控制 */
.nx-hero-dots {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.nx-hero-dots .dot {
  width: 32px;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.nx-hero-dots .dot.active {
  background: rgba(255, 255, 255, 0.3);
  width: 48px;
}

.nx-hero-dots .dot.active::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--nx-accent);
  border-radius: 2px;
  animation: nxDotFill 5s linear forwards;
}

@keyframes nxDotFill {
  from { width: 0; }
  to { width: 100%; }
}

.nx-hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  font-size: 16px;
  cursor: pointer;
  z-index: 3;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
  opacity: 0;
}

.nx-hero:hover .nx-hero-arrow {
  opacity: 1;
}

.nx-hero-arrow:hover {
  background: #ffffff;
  color: var(--nx-primary);
}

.nx-hero-arrow.prev { left: 32px; }
.nx-hero-arrow.next { right: 32px; }

/* 浮动统计条 */
.nx-hero-stats {
  position: absolute;
  bottom: 90px;
  right: 40px;
  z-index: 3;
  display: flex;
  gap: 1px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 14px;
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.nx-hero-stats .item {
  padding: 16px 24px;
  text-align: center;
  background: rgba(15, 23, 42, 0.5);
  min-width: 110px;
}

.nx-hero-stats .num {
  font-size: 26px;
  font-weight: 800;
  color: #ffffff;
  line-height: 1;
}

.nx-hero-stats .num span {
  color: var(--nx-accent);
}

.nx-hero-stats .label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 6px;
}

/* ===================================================================
   4. 首页 - 通用 section 样式
   =================================================================== */
.nx-section {
  padding: 90px 0;
  position: relative;
}

.nx-section-soft { background: var(--nx-bg-soft); }
.nx-section-dark { background: var(--nx-text); color: #ffffff; }

.nx-section-head {
  text-align: center;
  margin-bottom: 60px;
}

.nx-section-head .label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(29, 78, 216, 0.08);
  color: var(--nx-primary);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 1.5px;
  border-radius: 999px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.nx-section-head h2 {
  font-size: 40px;
  font-weight: 800;
  color: var(--nx-text);
  margin: 0 0 14px;
  letter-spacing: -0.5px;
}

.nx-section-head p {
  font-size: 16px;
  color: var(--nx-text-light);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===================================================================
   5. 首页 - 服务特色 (4 列 icon 卡)
   =================================================================== */
.nx-feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.nx-feature {
  position: relative;
  padding: 36px 28px;
  background: #ffffff;
  border: 1px solid var(--nx-border);
  border-radius: var(--nx-radius-lg);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  overflow: hidden;
}

.nx-feature::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--nx-primary) 0%, var(--nx-primary-light) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 0;
}

.nx-feature:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(29, 78, 216, 0.15);
  border-color: transparent;
}

.nx-feature:hover::before {
  opacity: 1;
}

.nx-feature > * {
  position: relative;
  z-index: 1;
}

.nx-feature .icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(29, 78, 216, 0.1) 0%, rgba(59, 130, 246, 0.1) 100%);
  color: var(--nx-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
  transition: all 0.4s ease;
}

.nx-feature:hover .icon {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  transform: rotate(-8deg) scale(1.05);
}

.nx-feature h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--nx-text);
  margin: 0 0 10px;
  transition: color 0.4s ease;
}

.nx-feature:hover h3 { color: #ffffff; }

.nx-feature p {
  font-size: 14px;
  color: var(--nx-text-light);
  line-height: 1.7;
  margin: 0;
  transition: color 0.4s ease;
}

.nx-feature:hover p { color: rgba(255, 255, 255, 0.85); }

.nx-feature .num-tag {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 40px;
  font-weight: 800;
  color: var(--nx-bg-cool);
  z-index: 0;
  line-height: 1;
  transition: color 0.4s ease;
}

.nx-feature:hover .num-tag { color: rgba(255, 255, 255, 0.1); }

/* ===================================================================
   6. 首页 - 关于我们预览
   =================================================================== */
.nx-about-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.nx-about-imgs {
  position: relative;
  height: 480px;
}

.nx-about-img-main {
  position: absolute;
  top: 0;
  left: 0;
  width: 75%;
  height: 75%;
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.15);
}

.nx-about-img-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.nx-about-img-main:hover img {
  transform: scale(1.05);
}

.nx-about-img-sub {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 55%;
  height: 55%;
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  border: 6px solid #ffffff;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.15);
}

.nx-about-img-sub img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.nx-about-badge {
  position: absolute;
  top: 30px;
  right: 30px;
  z-index: 2;
  background: linear-gradient(135deg, var(--nx-primary) 0%, var(--nx-primary-light) 100%);
  color: #ffffff;
  padding: 18px 22px;
  border-radius: 14px;
  text-align: center;
  box-shadow: 0 10px 25px rgba(29, 78, 216, 0.3);
}

.nx-about-badge .y {
  font-size: 32px;
  font-weight: 800;
  line-height: 1;
}

.nx-about-badge .t {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.9);
  margin-top: 6px;
  letter-spacing: 1px;
}

.nx-about-text .label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(29, 78, 216, 0.08);
  color: var(--nx-primary);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 1.5px;
  border-radius: 999px;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.nx-about-text h2 {
  font-size: 38px;
  font-weight: 800;
  color: var(--nx-text);
  margin: 0 0 18px;
  line-height: 1.25;
}

.nx-about-text h2 .accent {
  color: var(--nx-primary);
  position: relative;
}

.nx-about-text > p {
  font-size: 15px;
  color: var(--nx-text-light);
  line-height: 1.85;
  margin: 0 0 24px;
}

.nx-about-list {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 24px;
}

.nx-about-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14.5px;
  color: var(--nx-text);
}

.nx-about-list li i {
  color: var(--nx-primary);
  background: rgba(29, 78, 216, 0.1);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
  margin-top: 2px;
}

.nx-about-actions {
  display: flex;
  gap: 14px;
  align-items: center;
}

.nx-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--nx-primary);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: gap 0.3s ease;
}

.nx-btn-ghost:hover {
  gap: 12px;
  color: var(--nx-primary-dark);
}

/* ===================================================================
   7. 首页 - 产品中心 (4 列卡片)
   =================================================================== */
.nx-product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.nx-product {
  background: #ffffff;
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  border: 1px solid var(--nx-border);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  text-decoration: none;
  display: block;
  position: relative;
}

.nx-product:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
  border-color: transparent;
}

.nx-product-img {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.nx-product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.nx-product-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 23, 42, 0.75);
  color: #ffffff;
  padding: 4px 12px;
  font-size: 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

.nx-product-info {
  padding: 22px 22px 24px;
}

.nx-product-info h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--nx-text);
  margin: 0 0 8px;
  transition: color 0.3s ease;
}

.nx-product:hover .nx-product-info h3 {
  color: var(--nx-primary);
}

.nx-product-info p {
  font-size: 13.5px;
  color: var(--nx-text-light);
  margin: 0 0 14px;
  line-height: 1.6;
}

.nx-product-info .meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--nx-border);
  font-size: 12.5px;
  color: var(--nx-text-muted);
}

.nx-product-info .meta i {
  margin-right: 4px;
  color: var(--nx-primary);
}

.nx-section-foot {
  text-align: center;
  margin-top: 48px;
}

/* ===================================================================
   8. 首页 - 数据统计
   =================================================================== */
.nx-stats {
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(29, 78, 216, 0.88) 100%),
    url('../images/5.webp') center/cover no-repeat;
  color: #ffffff;
  position: relative;
  padding: 80px 0;
}

.nx-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.nx-stat {
  text-align: center;
  position: relative;
}

.nx-stat::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 60%;
  background: rgba(255, 255, 255, 0.15);
}

.nx-stat:last-child::after { display: none; }

.nx-stat .num {
  font-size: 52px;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(120deg, #fbbf24 0%, #ffffff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nx-stat .num span {
  font-size: 28px;
  margin-left: 4px;
}

.nx-stat .label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 12px;
  letter-spacing: 1px;
}

/* ===================================================================
   9. 首页 - 工程案例 (3 列卡片)
   =================================================================== */
.nx-case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.nx-case {
  position: relative;
  height: 360px;
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  cursor: pointer;
  text-decoration: none;
  display: block;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.08);
}

.nx-case img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.nx-case:hover img {
  transform: scale(1.08);
}

.nx-case::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.3) 50%, transparent 100%);
  z-index: 1;
}

.nx-case-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 28px 26px;
  z-index: 2;
  color: #ffffff;
}

.nx-case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--nx-accent);
  color: #ffffff;
  font-size: 12px;
  font-weight: 600;
  border-radius: 4px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.nx-case-info h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 8px;
  line-height: 1.3;
}

.nx-case-info p {
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 16px;
  line-height: 1.5;
}

.nx-case-info .arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.nx-case:hover .nx-case-info .arrow {
  background: var(--nx-accent);
  border-color: var(--nx-accent);
  transform: translateX(4px);
}

/* ===================================================================
   10. 首页 - 新闻 (3 列卡片)
   =================================================================== */
.nx-news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.nx-news {
  background: #ffffff;
  border-radius: var(--nx-radius-lg);
  overflow: hidden;
  border: 1px solid var(--nx-border);
  text-decoration: none;
  display: block;
  transition: all 0.3s ease;
}

.nx-news:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.1);
  border-color: transparent;
}

.nx-news-img {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.nx-news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.nx-news-img .date {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(15, 23, 42, 0.85);
  color: #ffffff;
  padding: 8px 14px;
  border-radius: 8px;
  text-align: center;
  backdrop-filter: blur(4px);
}

.nx-news-img .date .d {
  display: block;
  font-size: 18px;
  font-weight: 800;
  line-height: 1;
}

.nx-news-img .date .m {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 2px;
}

.nx-news-body {
  padding: 22px 24px 24px;
}

.nx-news-body .tag {
  display: inline-block;
  font-size: 12px;
  color: var(--nx-primary);
  background: rgba(29, 78, 216, 0.08);
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: 600;
  margin-bottom: 12px;
}

.nx-news-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--nx-text);
  margin: 0 0 10px;
  line-height: 1.4;
  transition: color 0.3s ease;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.nx-news:hover .nx-news-body h3 { color: var(--nx-primary); }

.nx-news-body p {
  font-size: 13.5px;
  color: var(--nx-text-light);
  line-height: 1.6;
  margin: 0 0 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.nx-news-body .more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--nx-primary);
  font-weight: 600;
}

.nx-news:hover .nx-news-body .more {
  gap: 10px;
}

/* ===================================================================
   11. 首页 - 合作伙伴 (滚动)
   =================================================================== */
.nx-partner {
  padding: 60px 0;
  background: var(--nx-bg-soft);
}

.nx-partner h2 {
  text-align: center;
  font-size: 28px;
  font-weight: 700;
  color: var(--nx-text);
  margin: 0 0 32px;
}

.nx-partner h2 small {
  display: block;
  font-size: 13px;
  color: var(--nx-text-muted);
  font-weight: 400;
  letter-spacing: 4px;
  margin-top: 8px;
}

.nx-partner-track {
  overflow: hidden;
  position: relative;
  padding: 8px 0;
  margin: -8px 0;
  mask-image: linear-gradient(to right, transparent 0, #000 8%, #000 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 8%, #000 92%, transparent 100%);
}

.nx-partner-track-inner {
  display: flex;
  gap: 40px;
  width: max-content;
  animation: nxScroll 30s linear infinite;
}

.nx-partner-track:hover .nx-partner-track-inner {
  animation-play-state: paused;
}

@keyframes nxScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.nx-partner-item {
  flex-shrink: 0;
  width: 180px;
  height: 80px;
  background: #ffffff;
  border: 1px solid var(--nx-border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--nx-text-light);
  letter-spacing: 1px;
  transition: all 0.3s ease;
}

.nx-partner-item:hover {
  border-color: var(--nx-primary);
  color: var(--nx-primary);
  transform: translateY(-3px);
}
.nx-partner-item img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: grayscale(60%);
  opacity: 0.7;
  transition: all 0.3s ease;
}
.nx-partner-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

/* ===================================================================
   12. 首页 - CTA
   =================================================================== */
.nx-cta-section {
  padding: 80px 0;
 
  color: #ffffff;
  position: relative;
  text-align: center;
  width: 100%;
  display: block;
  clear: both;
}

.nx-cta-section > .container {
  position: relative;
  z-index: 1;
}

.nx-cta-section h2 {
  font-size: 36px;
  font-weight: 800;
  margin: 0 0 14px;
  letter-spacing: -0.5px;
  color: #ffffff;
}

.nx-cta-section p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
  margin: 0 0 32px;
}

.nx-cta-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===================================================================
   13. 响应式
   =================================================================== */

/* 移动端图标按钮（语言 / 暗黑 / 菜单的统一样式） */
.nx-icon-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--nx-border);
  border-radius: 10px;
  background: var(--nx-bg-soft);
  color: var(--nx-text);
  cursor: pointer;
  font-size: 16px;
  transition: all 0.25s ease;
  position: relative;
}
.nx-icon-btn:hover {
  background: var(--nx-primary);
  border-color: var(--nx-primary);
  color: #ffffff;
}
.nx-lang-glyph {
  font-weight: 800;
  font-size: 14px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
}
.nx-lang-glyph i {
  font-style: normal;
  font-size: 11px;
  margin-left: 1px;
  background: #f59e0b;
  color: #fff;
  padding: 1px 3px;
  border-radius: 3px;
  font-weight: 700;
}

/* 移动端菜单标题栏 */
.nx-mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 18px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--nx-border);
}
.nx-mobile-menu-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--nx-text);
}
.nx-mobile-menu-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.06);
  border: none;
  color: var(--nx-text-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: all 0.2s ease;
}
.nx-mobile-menu-close:hover {
  background: var(--nx-primary);
  color: #fff;
}

/* 移动端菜单 - 多级展开 */
.nx-mobile-menu .nav-menu > li {
  position: relative;
  border-bottom: 1px solid var(--nx-border);
}
.nx-mobile-menu .nav-menu > li > a {
  display: block;
  padding: 14px 36px 14px 0;
  color: var(--nx-text);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
}
.nx-mobile-menu .nav-menu > li.nx-active > a {
  color: var(--nx-primary);
}
.nx-mobile-menu .nav-menu > li.has-sub > a {
  padding-right: 50px;
}
.nx-mobile-toggle {
  position: absolute;
  right: 0;
  top: 0;
  width: 44px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--nx-text-muted);
  cursor: pointer;
  font-size: 12px;
  transition: transform 0.3s ease, color 0.2s ease;
}
.nx-mobile-toggle.open {
  transform: rotate(90deg);
  color: var(--nx-primary);
}
.nx-mobile-menu .dropdown {
  display: none;
  list-style: none;
  padding: 0 0 8px 16px;
  margin: 0;
  background: var(--nx-bg-soft);
  border-radius: 8px;
  margin-bottom: 8px;
}
.nx-mobile-menu .dropdown.open {
  display: block;
}
.nx-mobile-menu .dropdown a {
  display: block;
  padding: 10px 0;
  color: var(--nx-text-light);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px dashed var(--nx-border);
}
.nx-mobile-menu .dropdown li:last-child a {
  border-bottom: none;
}
.nx-mobile-menu .dropdown li.has-sub {
  position: relative;
}
.nx-mobile-menu .dropdown li.has-sub > a {
  padding-right: 30px;
}
.nx-mobile-menu .dropdown .dropdown {
 
 
  border-radius: 0 6px 6px 0;
}
.nx-mobile-menu .dropdown .dropdown a {
  font-size: 13.5px;
  padding: 9px 0 9px 8px;
}
.nx-mobile-menu .dropdown .dropdown .dropdown a {
  font-size: 13px;
  color: var(--nx-text-muted);
}

@media (max-width: 1024px) {
  .nx-nav,
  .nx-search-btn,
  .nx-cta {
    display: none;
  }
  .nx-icon-btn {
    display: inline-flex;
  }
  .nx-mobile-btn {
    display: flex;
  }
  .nx-feature-grid,
  .nx-product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .nx-case-grid,
  .nx-news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .nx-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 30px;
  }
  .nx-stat::after { display: none; }
  .nx-about-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .nx-about-imgs { height: 380px; }
  .nx-hero-text h1 { font-size: 38px; }
  .nx-hero { height: 540px; }
  .nx-hero-stats { display: none; }
  .nx-section { padding: 60px 0; }
  .nx-section-head h2 { font-size: 30px; }
}

@media (max-width: 768px) {
  /* 移动端隐藏顶部通栏，避免空白 */
  .top-strip { display: none !important; height: 0 !important; min-height: 0 !important; padding: 0 !important; margin: 0 !important; overflow: hidden !important; }
  .header { min-height: 60px; }
  .nx-header-row { height: 60px; min-height: 60px; gap: 10px; }
  .nx-logo-icon { width: 36px; height: 36px; font-size: 16px; border-radius: 10px; }
  .nx-logo-text { font-size: 24px; letter-spacing: 3px; }
  .nx-logo img { max-height: 42px; max-width: 140px; }
  .nx-icon-btn { width: 36px; height: 36px; font-size: 14px; }
  .nx-icon-btn .nx-lang-glyph { font-size: 12px; }
  .nx-icon-btn .nx-lang-glyph i { font-size: 10px; }
  .nx-mobile-btn { width: 36px; height: 36px; }
  .nx-tools { gap: 6px; }
  .nx-feature-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .nx-feature { padding: 20px 14px; }
  .nx-feature .icon { width: 44px; height: 44px; font-size: 20px; border-radius: 12px; margin-bottom: 10px; }
  .nx-feature .num-tag { top: 8px; right: 10px; font-size: 10px; padding: 2px 6px; }
  .nx-feature h3 { font-size: 14px; margin-bottom: 6px; }
  .nx-feature p { font-size: 11.5px; line-height: 1.5; }
  .nx-case-grid,
  .nx-news-grid {
    grid-template-columns: 1fr;
  }
  .nx-product-grid { grid-template-columns: 1fr 1fr; }
  .nx-about-list { grid-template-columns: 1fr; }
  .nx-stats-grid { grid-template-columns: 1fr 1fr; }
  .nx-hero-text h1 { font-size: 24px; line-height: 1.2; }
  .nx-hero-text p { font-size: 14px; line-height: 1.6; }
  .nx-hero { height: 260px; }
  .nx-hero-slide {
    background-size: cover;
    background-position: center center;
    background-color: transparent;
  }
  .nx-hero-slide img { width: auto; height: auto; max-width: 100%; max-height: 100%; object-fit: cover; object-position: center center; transform: none; }
  .nx-hero-slide.active img { transform: none; }
  .nx-hero-content { padding: 16px 14px; }
  .nx-hero-arrow { display: none; }
  .nx-hero-dots { bottom: 10px; }
  .nx-hero-badge { font-size: 11px; padding: 5px 10px; margin-bottom: 10px; }
  .nx-hero-btns { gap: 8px; }
  .nx-hero-btns .nx-btn { padding: 9px 18px; font-size: 13px; }
  .nx-hero-search { flex-direction: column; border-radius: 14px; padding: 10px; align-items: stretch; max-width: 90%; }
  .nx-hero-search i { display: none; }
  .nx-hero-search input { padding: 7px 10px; font-size: 13px; }
  .nx-hero-search button { border-radius: 999px; padding: 9px; font-size: 13px; }
  .nx-hero-arrow { width: 36px; height: 36px; font-size: 12px; }
  .nx-hero-dot { width: 7px; height: 7px; }
  .nx-cta-section h2 { font-size: 24px; }
  .nx-cta-btns { flex-direction: column; }
  .nx-cta-btns .nx-btn { width: 100%; justify-content: center; }
  .nx-section { padding: 50px 0; }
  .nx-section-head { margin-bottom: 36px; }
  .nx-section-head h2 { font-size: 24px; }
  /* 移动端菜单紧凑 */
  .nx-mobile-menu-inner { width: 86%; padding: 18px 18px 24px; }
  .nx-mobile-menu .nav-menu > li > a { padding: 13px 36px 13px 0; font-size: 14.5px; }
  .nx-mobile-toggle { height: 44px; }
}

/* 移动端语言下拉 */
.nx-mobile-lang-dropdown {
  display: none;
  position: fixed;
  top: 64px;
  right: 12px;
  background: #ffffff;
  border: 1px solid var(--nx-border);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(15,23,42,0.18);
  z-index: 9999;
  min-width: 180px;
  max-height: 70vh;
  overflow-y: auto;
  padding: 6px 0;
}
.nx-mobile-lang-dropdown.open { display: block; }
.nx-mobile-lang-item {
  display: block;
  padding: 10px 18px;
  color: var(--nx-text);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid #f1f5f9;
  transition: background 0.2s;
}
.nx-mobile-lang-item:last-child { border-bottom: none; }
.nx-mobile-lang-item:hover { background: var(--nx-bg-soft); color: var(--nx-primary); }
body.dark-mode .nx-mobile-lang-dropdown { background: #1e293b; border-color: #334155; }
body.dark-mode .nx-mobile-lang-item { color: #e2e8f0; border-bottom-color: #334155; }
body.dark-mode .nx-mobile-lang-item:hover { background: rgba(29,78,216,0.15); color: var(--nx-primary-light); }

/* ===================================================================
   14. 黑暗模式（新元素）
   =================================================================== */
body.dark-mode {
  --nx-bg: #0f172a;
  --nx-bg-soft: #1e293b;
  --nx-bg-soft-2: #162033;
  --nx-text: #e2e8f0;
  --nx-text-light: #94a3b8;
  --nx-border: #334155;
}

body.dark-mode .top-strip {
  background: #1e293b;
  border-bottom-color: #334155;
}
body.dark-mode .top-strip .top-welcome,
body.dark-mode .top-strip .top-info {
  color: #94a3b8;
}
body.dark-mode .top-strip .top-info i { color: var(--nx-accent); }

body.dark-mode .header {
  background: #1e293b;
  border-bottom: 1px solid #334155;
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
body.dark-mode .nx-header-row { background: #1e293b; }
body.dark-mode .nx-logo-cn { color: #e2e8f0; }
body.dark-mode .nx-logo-en { color: #64748b; }
body.dark-mode .nx-nav .nav-menu > li > a { color: #cbd5e1; }
body.dark-mode .nx-nav .nav-menu > li:hover > a,
body.dark-mode .nx-nav .nav-menu > li.nx-active > a {
  color: var(--nx-primary-light);
  background: rgba(59, 130, 246, 0.12);
}
body.dark-mode .nx-nav .dropdown {
  background: #1e293b;
  border-color: #334155;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}
body.dark-mode .nx-nav .dropdown a { color: #cbd5e1; }
body.dark-mode .nx-nav .dropdown a:hover { background: rgba(29,78,216,0.15); color: var(--nx-primary-light); }
body.dark-mode .nx-nav .nav-menu > li.has-dropdown > a::after { color: #64748b; }
body.dark-mode .nx-search-btn { color: #cbd5e1; border-color: #334155; }
body.dark-mode .nx-search-btn:hover { background: var(--nx-primary); color: #fff; }

body.dark-mode .nx-hero { background: #0f172a; }
body.dark-mode .nx-hero-content { color: #e2e8f0; }
body.dark-mode .nx-hero-text h1 { color: #ffffff; }
body.dark-mode .nx-hero-text p { color: #cbd5e1; }
body.dark-mode .nx-hero-badge { background: rgba(29,78,216,0.18); color: #93c5fd; }
body.dark-mode .nx-hero-search { background: rgba(30,41,59,0.85); border-color: #334155; }
body.dark-mode .nx-hero-search input { color: #e2e8f0; }
body.dark-mode .nx-hero-arrow { background: rgba(30,41,59,0.6); border-color: #334155; color: #cbd5e1; }
body.dark-mode .nx-hero-dot { background: rgba(255,255,255,0.3); }
body.dark-mode .nx-hero-dot.active { background: var(--nx-primary); }

body.dark-mode .nx-stats-bar {
  background: #1e293b;
  border-top-color: #334155;
  border-bottom-color: #334155;
}
body.dark-mode .nx-stat .num { color: #e2e8f0; }
body.dark-mode .nx-stat .lbl { color: #94a3b8; }
body.dark-mode .nx-stat::after { background: #334155; }

body.dark-mode .nx-section { background: #0f172a; color: #cbd5e1; }
body.dark-mode .nx-section-soft { background: #1e293b; }
body.dark-mode .nx-section-head h2 { color: #e2e8f0; }
body.dark-mode .nx-section-head p { color: #94a3b8; }
body.dark-mode .nx-section-head .label { color: #60a5fa; }

body.dark-mode .nx-about-text h2 { color: #e2e8f0; }
body.dark-mode .nx-about-text p { color: #cbd5e1; }
body.dark-mode .nx-about-list li { color: #cbd5e1; }
body.dark-mode .nx-about-list li i { color: var(--nx-accent); }
body.dark-mode .nx-about-badge { background: var(--nx-primary); }
body.dark-mode .nx-btn-ghost { color: #cbd5e1; }
body.dark-mode .nx-btn-ghost:hover { color: var(--nx-primary-light); }

body.dark-mode .nx-feature {
  background: #1e293b;
  border-color: #334155;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
body.dark-mode .nx-feature h3 { color: #e2e8f0; }
body.dark-mode .nx-feature p { color: #94a3b8; }
body.dark-mode .nx-feature .icon { color: var(--nx-primary-light); }
body.dark-mode .nx-feature .num-tag { color: rgba(96,165,250,0.18); }

body.dark-mode .nx-product {
  background: #1e293b;
  border-color: #334155;
}
body.dark-mode .nx-product-info h3 { color: #e2e8f0; }
body.dark-mode .nx-product-info p { color: #94a3b8; }
body.dark-mode .nx-product-info .meta { color: #64748b; }
body.dark-mode .nx-product-info .meta i { color: var(--nx-primary-light); }
body.dark-mode .nx-product-tag { background: var(--nx-primary); }

body.dark-mode .nx-case { background: #1e293b; }
body.dark-mode .nx-case-info h3 { color: #e2e8f0; }
body.dark-mode .nx-case-info p { color: #94a3b8; }
body.dark-mode .nx-case-tag { background: rgba(29,78,216,0.85); }

body.dark-mode .nx-news {
  background: #1e293b;
  border-color: #334155;
}
body.dark-mode .nx-news-info h3 { color: #e2e8f0; }
body.dark-mode .nx-news-info p { color: #94a3b8; }
body.dark-mode .nx-news-date { background: #0f172a; }
body.dark-mode .nx-news-date .d { color: #e2e8f0; }
body.dark-mode .nx-news-date .m { color: #94a3b8; }

body.dark-mode .nx-partner-bar { background: #1e293b; }
body.dark-mode .nx-partner-bar h3 { color: #e2e8f0; }
body.dark-mode .nx-partner-bar p { color: #94a3b8; }

body.dark-mode .nx-cta-section { color: #ffffff; }

body.dark-mode footer { background: #0a0f1d; color: #94a3b8; }
body.dark-mode .footer-top { background: #0f172a; }
body.dark-mode .footer-top h4 { color: #e2e8f0; }
body.dark-mode .footer-links a { color: #94a3b8; }
body.dark-mode .footer-links a:hover { color: var(--nx-primary-light); }
body.dark-mode .footer-bottom { background: #0a0f1d; border-top-color: #1e293b; color: #64748b; }

body.dark-mode .search-overlay { background: transparent; }
body.dark-mode .search-overlay-content { background: transparent; }

body.dark-mode .nx-mobile-menu-inner { background: #1e293b; }
body.dark-mode .nx-mobile-menu .nav-menu > li { border-bottom-color: #334155; }
body.dark-mode .nx-mobile-menu .nav-menu > li > a { color: #e2e8f0; border-bottom-color: #334155; }
body.dark-mode .nx-mobile-menu .nav-menu > li.nx-active > a { color: var(--nx-primary-light); }
body.dark-mode .nx-mobile-menu .dropdown { background: rgba(255,255,255,0.04); }
body.dark-mode .nx-mobile-menu .dropdown a { color: #94a3b8; border-bottom-color: #334155; }
body.dark-mode .nx-mobile-menu-header { border-bottom-color: #334155; }
body.dark-mode .nx-mobile-menu-title { color: #e2e8f0; }
body.dark-mode .nx-mobile-toggle { color: #94a3b8; }
body.dark-mode .nx-mobile-menu-close { background: rgba(255,255,255,0.06); color: #cbd5e1; }
body.dark-mode .nx-icon-btn { background: var(--nx-bg-soft); border-color: var(--nx-border); color: var(--nx-text); }
body.dark-mode .nx-mobile-btn { background: var(--nx-bg-soft); border-color: var(--nx-border); }
body.dark-mode .nx-mobile-btn span { background: var(--nx-text); }

body.dark-mode .nx-scroll-top { background: var(--nx-primary); }
body.dark-mode .nx-cta-mobile { background: var(--nx-primary); color: #fff; }
body.dark-mode .pc-lang-dropdown { background: #1e293b; border-color: #334155; }
body.dark-mode .pc-lang-dropdown .pc-lang-item { color: #cbd5e1; }
body.dark-mode .pc-lang-dropdown .pc-lang-item:hover { background: rgba(29,78,216,0.15); color: var(--nx-primary-light); }

body.dark-mode .nx-btn-outline { color: var(--nx-primary-light); border-color: var(--nx-primary-light); }
body.dark-mode .nx-btn-outline:hover { background: var(--nx-primary); color: #fff; }

body.dark-mode .nx-case-arrow { background: #1e293b; color: #cbd5e1; }
body.dark-mode .nx-case-arrow:hover { background: var(--nx-primary); color: #fff; }