/**
 * ApexEnergy 鼎新储能 — 深灰科技重工智造风
 * 暗色主题：深灰基底 + 科技蓝强调 + 银白文字
 * 信息密集型 · 方正有序 · 精密工业感
 * 架构：第三方模板模式 ({pboot:sitedomain}/skin/)
 */

/* Google Fonts — 工业科技风格字体 */


/* ============================================================
   CSS 变量体系
   ============================================================ */
:root {
  /* 深灰基底 */
  --bg-deep: #0D0D0D;
  --bg-primary: #1A1A1A;
  --bg-secondary: #1E1E1E;
  --bg-card: #252525;
  --bg-card-hover: #2D2D2D;
  --bg-elevated: #2A2A2A;
  --bg-input: #1A1A1A;

  /* 科技蓝 */
  --blue-primary: #0A6BFF;
  --blue-bright: #3B8BFF;
  --blue-dim: rgba(10, 107, 255, 0.12);
  --blue-glow: rgba(10, 107, 255, 0.25);
  --blue-gradient: linear-gradient(135deg, #0A6BFF 0%, #0066FF 50%, #0052CC 100%);

  /* 强调色 */
  --accent-orange: #FF6B35;
  --accent-green: #00C853;
  --accent-red: #FF3D00;

  /* 文字色阶 */
  --text-primary: #EAEAEA;
  --text-secondary: #999999;
  --text-muted: #666666;
  --text-white: #FFFFFF;

  /* 边框 */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-card: rgba(255, 255, 255, 0.08);
  --border-blue: rgba(10, 107, 255, 0.3);
  --border-active: #0A6BFF;

  /* 圆角 — 小圆角精密感 */
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* 间距 */
  --section-py: 90px;
  --container-max: 1260px;
  --header-h: 68px;

  /* 过渡 */
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 150ms;
  --dur-normal: 280ms;
  --dur-slow: 450ms;

  /* 字体 */
  --font-heading: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  --font-data: 'JetBrains Mono', 'DIN', 'DIN Alternate', 'SF Mono', 'Consolas', monospace;
}

/* ============================================================
   全局重置
   ============================================================ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg-deep);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
::selection { background: rgba(10, 107, 255, 0.3); color: #fff; }
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }
a { color: inherit; text-decoration: none; transition: color var(--dur-fast) var(--ease-out); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
input, textarea, select, button { font-family: inherit; font-size: inherit; }
input::placeholder, textarea::placeholder { color: var(--text-muted); opacity: 1; }

/* ============================================================
   排版
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.02em;
}
.section-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--blue-bright);
  margin-bottom: 0.75rem;
  position: relative;
  padding-left: 28px;
}
.section-tag::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 2px;
  background: var(--blue-primary);
}
.section-title {
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}
.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* ============================================================
   布局容器
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: var(--section-py) 0; }
.section--dark { background: var(--bg-primary); }
.section--darker { background: var(--bg-deep); }
.section--blue { background: var(--blue-primary); }

/* 区块分割线 */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(10,107,255,0.15) 25%, rgba(10,107,255,0.3) 50%, rgba(10,107,255,0.15) 75%, transparent 100%);
  border: none;
  margin: 0;
}

/* ============================================================
   Header 头部 — 深灰半透固定顶
   ============================================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(13, 13, 13, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--dur-normal), box-shadow var(--dur-normal);
}
.header.scrolled {
  background: rgba(13, 13, 13, 0.97);
  box-shadow: 0 1px 40px rgba(0, 0, 0, 0.6);
}
.header__inner {
  display: flex;
  align-items: center;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  margin-right: auto;
}
.header__logo-icon {
  width: 42px; height: 42px;
  background: var(--blue-gradient);
  border-radius: var(--radius-xs);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; color: #fff; font-weight: 700;
  position: relative;
}
.header__logo-icon::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  border: 1px solid rgba(255,255,255,0.2);
}
.header__logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.1rem; font-weight: 700; color: var(--text-white);
  letter-spacing: -0.01em;
}
.header__logo-sub {
  font-size: 0.58rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--blue-bright);
}
/* 主导航 */
.header__nav { display: flex; align-items: center; gap: 2px; }
.header__nav-link {
  padding: 8px 15px; font-size: 0.88rem; font-weight: 500;
  color: var(--text-secondary); border-radius: var(--radius-xs);
  transition: all var(--dur-fast); white-space: nowrap;
  letter-spacing: 0.02em;
}
.header__nav-link:hover,
.header__nav-link.active {
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.04);
}
.header__nav-link.active { color: var(--blue-bright); }
/* 导航下拉 */
.header__nav-item { position: relative; }
.header__nav-item:hover .header__dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.header__dropdown {
  position: absolute; top: 100%; left: 0; min-width: 160px;
  padding: 6px 0;
  background: rgba(26, 26, 26, 0.98);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
  opacity: 0; visibility: hidden;
  transform: translateY(8px);
  transition: all var(--dur-normal) var(--ease-out);
  z-index: 60;
}
.header__dropdown a {
  display: block; padding: 10px 18px;
  font-size: 0.84rem; color: var(--text-secondary);
  transition: all var(--dur-fast);
}
.header__dropdown a:hover { color: var(--text-white); background: rgba(255,255,255,0.04); }
/* 右侧操作 */
.header__actions { display: flex; align-items: center; gap: 10px; margin-left: 20px; }
.header__cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 20px;
  border: 1.5px solid var(--blue-primary);
  color: var(--blue-bright);
  font-size: 0.82rem; font-weight: 600;
  border-radius: var(--radius-xs);
  white-space: nowrap;
  transition: all var(--dur-fast);
}
.header__cta:hover {
  background: var(--blue-primary);
  color: #fff;
  box-shadow: 0 0 20px var(--blue-glow);
}

/* ============================================================
   汉堡菜单（移动端）— 独立于 header__actions
   ============================================================ */
.hamburger {
  display: none; width: 40px; height: 40px;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  background: none; border: none; cursor: pointer;
  z-index: 1100; margin-left: 8px;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text-primary); border-radius: 1px;
  transition: all var(--dur-normal) var(--ease-out);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* 移动端侧滑菜单 */
.mobile-nav {
  position: fixed; top: 0; left: 0; bottom: 0;
  width: 82%; max-width: 340px;
  background: rgba(13, 13, 13, 0.99);
  backdrop-filter: blur(30px);
  z-index: 1200;
  transform: translateX(-100%);
  transition: transform var(--dur-normal) var(--ease-out);
  overflow-y: auto;
}
.mobile-nav.open { transform: translateX(0); }
.mobile-nav__inner { padding: 24px; padding-top: 80px; }
.mobile-nav__link {
  display: block; padding: 14px 16px; font-size: 1rem;
  color: var(--text-secondary); border-radius: var(--radius-xs);
  transition: all var(--dur-fast);
}
.mobile-nav__link:hover { color: var(--text-white); background: rgba(255,255,255,0.03); }
.mobile-nav__sub { padding-left: 12px; display: none; }
.mobile-nav__sub.open { display: block; }
.mobile-nav__sub a {
  display: block; padding: 10px 16px; font-size: 0.88rem;
  color: var(--text-muted); border-radius: var(--radius-xs);
}
.mobile-nav__overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.65);
  z-index: 1150; opacity: 0; pointer-events: none;
  transition: opacity var(--dur-normal);
}
.mobile-nav__overlay.show { opacity: 1; pointer-events: auto; }

/* ============================================================
   按钮系统
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; font-size: 0.9rem; font-weight: 600;
  border-radius: var(--radius-xs); border: none; cursor: pointer;
  transition: all var(--dur-normal) var(--ease-out);
  white-space: nowrap; letter-spacing: 0.02em;
}
.btn--primary {
  background: var(--blue-gradient);
  color: #fff;
}
.btn--primary:hover {
  box-shadow: 0 8px 30px var(--blue-glow);
  transform: translateY(-2px);
  color: #fff;
}
.btn--outline {
  background: transparent;
  color: var(--text-white);
  border: 1.5px solid var(--border-blue);
}
.btn--outline:hover {
  border-color: var(--blue-primary);
  background: var(--blue-dim);
  color: var(--text-white);
  transform: translateY(-2px);
}
.btn--ghost {
  background: rgba(255,255,255,0.03);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}
.btn--ghost:hover { background: rgba(255,255,255,0.06); color: var(--text-white); }
.btn--white {
  background: #fff;
  color: var(--bg-deep);
}
.btn--white:hover { background: var(--text-secondary); color: var(--bg-deep); }

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative; height: 320px; overflow: hidden;
  background: var(--bg-primary);
}
.inner-banner__bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0.45;
}
.inner-banner__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(13,13,13,0.6) 0%, rgba(13,13,13,0.3) 50%, var(--bg-deep) 100%);
}
.inner-banner__content {
  position: relative; height: 100%;
  display: flex; flex-direction: column; justify-content: center;
  max-width: var(--container-max); margin: 0 auto; padding: 0 24px;
}
.inner-banner__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700; color: #fff; margin-bottom: 0.5rem;
}
.inner-banner__subtitle { font-size: 1.05rem; color: var(--text-secondary); }
/* 面包屑 */
.breadcrumb-bar {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
}
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  max-width: var(--container-max); margin: 0 auto;
  padding: 14px 24px; font-size: 0.82rem; color: var(--text-muted);
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--blue-bright); }
.breadcrumb i { font-size: 0.6rem; color: var(--text-muted); }

/* ============================================================
   卡片系统
   ============================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: all var(--dur-normal) var(--ease-out);
}
.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-blue);
  box-shadow: 0 8px 40px rgba(0,0,0,0.5), 0 0 0 1px var(--blue-dim);
  transform: translateY(-3px);
}
.card__image {
  position: relative; overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--bg-elevated);
}
.card__image img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--dur-slow) var(--ease-out);
}
.card:hover .card__image img { transform: scale(1.04); }
.card__body { padding: 20px; }
.card__tag {
  display: inline-block; padding: 2px 10px;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.05em;
  color: var(--blue-bright);
  background: var(--blue-dim);
  border-radius: var(--radius-xs);
  margin-bottom: 8px;
}
.card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem; font-weight: 600; color: var(--text-white);
  margin-bottom: 6px; line-height: 1.4;
  display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
}
.card__desc {
  font-size: 0.88rem; color: var(--text-secondary); line-height: 1.65;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.card__meta {
  display: flex; align-items: center; gap: 16px;
  margin-top: 14px; padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem; color: var(--text-muted);
}
.card__params {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px;
}
.card__param {
  padding: 3px 10px; font-size: 0.7rem; font-family: var(--font-mono);
  color: var(--text-muted); background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-subtle); border-radius: var(--radius-xs);
}

/* 热门角标 */
.card__badge {
  position: absolute; top: 10px; right: 10px;
  padding: 4px 10px; font-size: 0.68rem; font-weight: 700;
  background: var(--blue-primary); color: #fff;
  border-radius: var(--radius-xs); z-index: 2;
  letter-spacing: 0.04em;
}
.card__badge--hot { background: var(--accent-orange); }
.card__badge--new { background: var(--accent-green); }

/* ============================================================
   首页 Hero Banner（全屏）
   ============================================================ */
.hero {
  position: relative; height: 100vh; min-height: 600px; overflow: hidden;
  background: var(--bg-deep);
}
.hero .swiper { position: absolute; inset: 0; z-index: 0; }
.hero__slide {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  filter: brightness(0.55);
}
.hero__overlay {
  position: absolute; inset: 0; z-index: 2;
  background:
    linear-gradient(180deg, rgba(13,13,13,0.4) 0%, rgba(13,13,13,0.1) 40%, rgba(13,13,13,0.9) 100%),
    linear-gradient(90deg, rgba(10,107,255,0.06) 0%, transparent 50%);
}
/* Hero 网格线装饰 */
.hero__grid {
  position: absolute; inset: 0; z-index: 1; opacity: 0.04;
  background-image:
    linear-gradient(rgba(255,255,255,0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.3) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.hero__content {
  position: relative; z-index: 3;
  height: 100%;
  display: flex; flex-direction: column; justify-content: center;
  max-width: var(--container-max); margin: 0 auto;
  padding: 0 24px;
}
.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: 800; color: #fff; line-height: 1.15;
  margin-bottom: 1rem; max-width: 700px;
  text-shadow: 0 2px 40px rgba(0,0,0,0.5);
}
.hero__title-accent {
  color: var(--blue-bright);
  position: relative;
}
.hero__subtitle {
  font-size: clamp(0.95rem, 1.5vw, 1.15rem);
  color: rgba(255,255,255,0.65);
  margin-bottom: 2.2rem; max-width: 500px;
  font-weight: 300; line-height: 1.7;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }
/* Hero 横线装饰 */
.hero__divider {
  width: 60px; height: 2px;
  background: var(--blue-primary);
  margin-bottom: 1.5rem;
}
/* Swiper 分页器 — 进度条式 */
.hero-pagination {
  display: flex; justify-content: center; gap: 6px; margin-top: 20px;
}
.hero-pagination .swiper-pagination-bullet {
  width: 48px; height: 3px; border-radius: 2px;
  background: rgba(255,255,255,0.25); opacity: 1;
  transition: all var(--dur-normal);
}
.hero-pagination .swiper-pagination-bullet-active {
  width: 72px;
  background: var(--blue-primary);
  box-shadow: 0 0 12px var(--blue-glow);
}

/* ============================================================
   首页 模块2 — 产能数据·智造看板
   ============================================================ */
.stats-section {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}
.stats-section::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(10,107,255,0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(10,107,255,0.03) 0%, transparent 50%);
  pointer-events: none;
}
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat-item {
  text-align: center; padding: 32px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  position: relative;
  transition: all var(--dur-normal);
}
.stat-item:hover { border-color: var(--border-blue); }
.stat-item__number {
  font-family: var(--font-data);
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  font-weight: 800; color: var(--text-white);
  line-height: 1; margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}
.stat-item__number .highlight { color: var(--blue-bright); }
.stat-item__unit {
  font-size: 1rem; color: var(--blue-bright); font-weight: 600;
}
.stat-item__label {
  font-size: 0.82rem; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.06em;
}
.stat-item__icon {
  font-size: 1.4rem; color: var(--blue-dim);
  margin-bottom: 12px;
}

/* ============================================================
   首页 模块3 — 核心产品分类
   ============================================================ */
.product-cats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.product-cat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 40px 28px;
  text-align: center;
  transition: all var(--dur-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}
.product-cat-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--blue-gradient);
  opacity: 0;
  transition: opacity var(--dur-normal);
}
.product-cat-card:hover {
  border-color: var(--border-blue);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}
.product-cat-card:hover::before { opacity: 1; }
.product-cat-card__icon {
  width: 56px; height: 56px; margin: 0 auto 20px;
  border-radius: var(--radius-xs);
  background: var(--blue-dim);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; color: var(--blue-bright);
  transition: all var(--dur-normal);
}
.product-cat-card:hover .product-cat-card__icon {
  background: var(--blue-primary);
  color: #fff;
  box-shadow: 0 0 30px var(--blue-glow);
}
.product-cat-card__title {
  font-family: var(--font-heading);
  font-size: 1.1rem; font-weight: 600; color: var(--text-white);
  margin-bottom: 6px;
}
.product-cat-card__spec {
  font-size: 0.8rem; color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ============================================================
   首页 模块5 — 主推产品（三列大卡）
   ============================================================ */
.featured-products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.featured-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--dur-normal) var(--ease-out);
  position: relative;
}
.featured-card:hover {
  border-color: var(--border-blue);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
}
.featured-card__image {
  position: relative; overflow: hidden;
  aspect-ratio: 4/3;
}
.featured-card__image img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--dur-slow) var(--ease-out);
}
.featured-card:hover .featured-card__image img { transform: scale(1.05); }
.featured-card__body { padding: 24px; }
.featured-card__name {
  font-family: var(--font-heading);
  font-size: 1.2rem; font-weight: 700; color: var(--text-white);
  margin-bottom: 12px;
}
.featured-card__specs {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px; margin-bottom: 18px;
}
.featured-card__spec-item {
  padding: 10px 12px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
}
.featured-card__spec-label {
  font-size: 0.7rem; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 2px;
}
.featured-card__spec-value {
  font-family: var(--font-mono);
  font-size: 0.88rem; font-weight: 600; color: var(--text-white);
}

/* ============================================================
   首页 模块6 — 技术数据·核心指标
   ============================================================ */
.tech-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.tech-metric {
  text-align: center; padding: 48px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  position: relative;
  transition: all var(--dur-normal);
}
.tech-metric:hover { border-color: var(--border-blue); }
.tech-metric__ring {
  width: 120px; height: 120px; margin: 0 auto 20px;
  position: relative;
}
.tech-metric__ring svg { transform: rotate(-90deg); }
.tech-metric__ring-bg {
  fill: none; stroke: rgba(255,255,255,0.04); stroke-width: 8;
}
.tech-metric__ring-fill {
  fill: none; stroke: var(--blue-primary); stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 2s var(--ease-out);
}
.tech-metric__number {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-data);
  font-size: 2rem; font-weight: 800; color: var(--text-white);
}
.tech-metric__title {
  font-size: 1.1rem; font-weight: 700; color: var(--text-white); margin-bottom: 6px;
}
.tech-metric__desc { font-size: 0.82rem; color: var(--text-muted); }

/* ============================================================
   首页 模块7 — 工程案例
   ============================================================ */
.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.case-card {
  position: relative; border-radius: var(--radius-sm);
  overflow: hidden; aspect-ratio: 1/1;
  cursor: pointer;
}
.case-card img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--dur-slow) var(--ease-out);
}
.case-card:hover img { transform: scale(1.08); }
.case-card__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(transparent 30%, rgba(0,0,0,0.85));
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 20px; transition: all var(--dur-normal);
}
.case-card__title {
  font-family: var(--font-heading);
  font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 4px;
}
.case-card__capacity {
  font-family: var(--font-mono);
  font-size: 0.78rem; color: var(--blue-bright); font-weight: 600;
}

/* ============================================================
   首页 模块8 — OEM/ODM CTA
   ============================================================ */
.oem-cta {
  background: var(--bg-card);
  border: 1px solid var(--border-blue);
  border-radius: var(--radius-md);
  padding: 60px 48px; text-align: center;
  position: relative; overflow: hidden;
}
.oem-cta::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(10,107,255,0.05) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 50%, rgba(10,107,255,0.03) 0%, transparent 60%);
  pointer-events: none;
}
.oem-cta__title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700; color: var(--text-white); margin-bottom: 12px;
}
.oem-cta__desc {
  color: var(--text-secondary); margin-bottom: 28px;
  max-width: 500px; margin-left: auto; margin-right: auto;
}

/* ============================================================
   首页 模块9 — 新闻资讯
   ============================================================ */
.news-mini-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.news-mini {
  display: flex; gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--dur-normal);
}
.news-mini:hover { border-color: var(--border-blue); background: var(--bg-card-hover); }
.news-mini__thumb {
  width: 100px; height: 80px; border-radius: var(--radius-xs);
  overflow: hidden; flex-shrink: 0; background: var(--bg-elevated);
}
.news-mini__thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-mini__info { flex: 1; min-width: 0; }
.news-mini__title {
  font-family: var(--font-heading);
  font-size: 0.92rem; font-weight: 600; color: var(--text-white);
  margin-bottom: 4px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-mini__date {
  font-size: 0.75rem; color: var(--text-muted);
  display: flex; align-items: center; gap: 4px;
}

/* ============================================================
   分页
   ============================================================ */
.pagination {
  display: flex; justify-content: center; align-items: center;
  gap: 4px; margin-top: 48px;
}
.pagination a, .pagination span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 40px; height: 40px; padding: 0 8px;
  font-size: 0.85rem; color: var(--text-secondary);
  border-radius: var(--radius-xs);
  transition: all var(--dur-fast);
}
.pagination a:hover { background: rgba(255,255,255,0.05); color: var(--text-white); }
.pagination .active {
  background: var(--blue-primary); color: #fff; font-weight: 600;
}
.pagination .disabled { color: var(--text-muted); pointer-events: none; }

/* ============================================================
   空状态
   ============================================================ */
.empty-state {
  text-align: center; padding: 60px 20px;
}
.empty-state i { font-size: 2.5rem; color: var(--text-muted); margin-bottom: 14px; display: block; }
.empty-state p { color: var(--text-muted); font-size: 0.9rem; }

/* ============================================================
   列表页 — 产品列表侧边栏+网格
   ============================================================ */
.list-layout { display: grid; grid-template-columns: 260px 1fr; gap: 32px; }
/* 侧边栏 */
.list-sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 24px;
  align-self: start;
  position: sticky; top: calc(var(--header-h) + 20px);
}
.list-sidebar__title {
  font-family: var(--font-heading);
  font-size: 1.1rem; font-weight: 700; color: var(--text-white);
  margin-bottom: 8px; padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}
.list-sidebar__subtitle {
  font-size: 0.8rem; color: var(--text-muted); margin-bottom: 18px;
}
.list-sidebar__nav { display: flex; flex-direction: column; gap: 2px; }
.list-sidebar__nav a {
  display: block; padding: 10px 14px;
  font-size: 0.88rem; color: var(--text-secondary);
  border-radius: var(--radius-xs);
  transition: all var(--dur-fast);
  border-left: 2px solid transparent;
}
.list-sidebar__nav a:hover,
.list-sidebar__nav a.active {
  color: var(--text-white);
  background: rgba(255,255,255,0.03);
  border-left-color: var(--blue-primary);
}
.list-sidebar__nav a.active { color: var(--blue-bright); }
/* 子栏目过滤栏 */
.filter-bar {
  display: flex; align-items: center; gap: 8px;
  overflow-x: auto; padding-bottom: 8px; margin-bottom: 28px;
  -ms-overflow-style: none; scrollbar-width: none;
}
.filter-bar::-webkit-scrollbar { display: none; }
.filter-bar a {
  display: inline-flex; padding: 8px 18px;
  font-size: 0.82rem; font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  white-space: nowrap; flex-shrink: 0;
  transition: all var(--dur-fast);
}
.filter-bar a:hover, .filter-bar a.active {
  color: var(--blue-bright);
  border-color: var(--blue-primary);
  background: var(--blue-dim);
}

/* ============================================================
   列表页 — 新闻列表
   ============================================================ */
.news-list { display: flex; flex-direction: column; gap: 12px; }
.news-list-item {
  display: flex; gap: 20px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--dur-normal);
}
.news-list-item:hover { border-color: var(--border-blue); background: var(--bg-card-hover); }
.news-list-item__thumb {
  width: 160px; height: 110px; border-radius: var(--radius-xs);
  overflow: hidden; flex-shrink: 0; background: var(--bg-elevated);
}
.news-list-item__thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-list-item__info { flex: 1; min-width: 0; }
.news-list-item__title {
  font-size: 1.05rem; font-weight: 600; color: var(--text-white); margin-bottom: 6px;
}
.news-list-item__meta {
  font-size: 0.78rem; color: var(--text-muted); margin-bottom: 8px;
  display: flex; gap: 16px;
}
.news-list-item__desc {
  font-size: 0.88rem; color: var(--text-secondary);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* ============================================================
   详情页
   ============================================================ */
.detail { max-width: 900px; margin: 0 auto; }
.detail__header { margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--border-subtle); }
.detail__title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700; color: var(--text-white); margin-bottom: 12px;
}
.detail__meta-row {
  display: flex; flex-wrap: wrap; gap: 20px;
  font-size: 0.82rem; color: var(--text-muted);
}
.detail__meta-row i { margin-right: 4px; color: var(--blue-bright); }
.detail__params {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px; margin-bottom: 32px;
}
.detail__param {
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  text-align: center;
}
.detail__param-label {
  font-size: 0.7rem; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 4px;
}
.detail__param-value {
  font-family: var(--font-mono);
  font-size: 0.95rem; font-weight: 600; color: var(--text-white);
}
.detail__body {
  color: var(--text-secondary); line-height: 2;
  font-size: 0.94rem; letter-spacing: 0.015em;
}
.detail__body img { border-radius: var(--radius-sm); margin: 24px 0; }
.detail__body p { margin-bottom: 16px; }
.detail__body h2, .detail__body h3 { color: var(--text-white); margin-top: 32px; margin-bottom: 16px; }
/* 产品详情布局 */
.product-detail-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
  margin-bottom: 40px;
}
.product-detail__gallery { border-radius: var(--radius-md); overflow: hidden; }
.product-detail__gallery .swiper-slide { aspect-ratio: 4/3; }
.product-detail__gallery img { width: 100%; height: 100%; object-fit: cover; }
.product-detail__info { display: flex; flex-direction: column; }
.product-detail__name {
  font-size: 1.75rem; font-weight: 700; color: var(--text-white); margin-bottom: 12px;
}
.product-detail__desc {
  color: var(--text-secondary); margin-bottom: 20px; line-height: 1.7;
}
.product-detail__spec-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 24px;
}
.product-detail__spec-item {
  padding: 12px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
}
.product-detail__spec-label {
  font-size: 0.72rem; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.product-detail__spec-value {
  font-family: var(--font-mono);
  font-size: 0.9rem; font-weight: 600; color: var(--text-white);
}
/* Tab切换 */
.detail-tabs {
  display: flex; gap: 0; border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 28px;
}
.detail-tab {
  padding: 12px 24px;
  font-size: 0.88rem; font-weight: 600; color: var(--text-muted);
  border-bottom: 2px solid transparent;
  cursor: pointer; transition: all var(--dur-fast);
  background: none; border-top: none; border-left: none; border-right: none;
}
.detail-tab:hover { color: var(--text-white); }
.detail-tab.active {
  color: var(--blue-bright);
  border-bottom-color: var(--blue-primary);
}
/* 上下篇 */
.detail__pager {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 48px; padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem; color: var(--text-muted);
}
.detail__pager a { color: var(--text-secondary); }
.detail__pager a:hover { color: var(--blue-bright); }

/* ============================================================
   产线时间轴
   ============================================================ */
.timeline { position: relative; padding: 0; }
.timeline::before {
  content: ''; position: absolute; left: 50%; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent 0%, var(--blue-dim) 10%, var(--border-blue) 50%, var(--blue-dim) 90%, transparent 100%);
}
.timeline-item {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  align-items: center; margin-bottom: 60px;
  position: relative;
}
.timeline-item:nth-child(even) { direction: rtl; }
.timeline-item:nth-child(even) .timeline-item__text { direction: ltr; }
.timeline-item__image {
  border-radius: var(--radius-sm); overflow: hidden;
  aspect-ratio: 16/10; background: var(--bg-elevated);
}
.timeline-item__image img { width: 100%; height: 100%; object-fit: cover; }
.timeline-item__step {
  font-family: var(--font-mono);
  font-size: 0.72rem; font-weight: 700; color: var(--blue-bright);
  letter-spacing: 0.1em; margin-bottom: 6px;
}
.timeline-item__title {
  font-size: 1.5rem; font-weight: 700; color: var(--text-white); margin-bottom: 10px;
}
.timeline-item__desc {
  color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px;
}
.timeline-item__precision {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px;
  background: var(--blue-dim); color: var(--blue-bright);
  font-family: var(--font-mono); font-size: 0.78rem; font-weight: 600;
  border-radius: var(--radius-xs);
}
/* 时间轴连接点 */
.timeline-item::after {
  content: ''; position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 12px; height: 12px;
  background: var(--blue-primary);
  border: 2px solid var(--bg-deep);
  border-radius: 50%;
  z-index: 2;
  box-shadow: 0 0 12px var(--blue-glow);
}

/* ============================================================
   技术参数表
   ============================================================ */
.specs-table-wrap { overflow-x: auto; }
.specs-table {
  width: 100%; border-collapse: collapse;
  font-size: 0.9rem;
}
.specs-table thead th {
  padding: 14px 18px; text-align: left;
  background: var(--bg-card); color: var(--blue-bright);
  font-weight: 600; font-size: 0.82rem;
  text-transform: uppercase; letter-spacing: 0.05em;
  border-bottom: 2px solid var(--border-blue);
  white-space: nowrap;
}
.specs-table tbody td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.specs-table tbody tr:hover td {
  background: rgba(255,255,255,0.02);
  color: var(--text-white);
}
.specs-table tbody td:first-child {
  font-family: var(--font-heading);
  font-weight: 600; color: var(--text-primary);
}

/* ============================================================
   OEM 合作页
   ============================================================ */
.oem-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 48px; }
.oem-feature {
  text-align: center; padding: 36px 24px;
  background: var(--bg-card); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--dur-normal);
}
.oem-feature:hover { border-color: var(--border-blue); }
.oem-feature__icon {
  width: 56px; height: 56px; margin: 0 auto 16px;
  border-radius: var(--radius-xs);
  background: var(--blue-dim);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: var(--blue-bright);
}
.oem-feature__title { font-size: 1.05rem; font-weight: 700; color: var(--text-white); margin-bottom: 6px; }
.oem-feature__desc { font-size: 0.85rem; color: var(--text-secondary); }

/* ============================================================
   联系我们
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info__item {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  transition: all var(--dur-fast);
}
.contact-info__item:hover { border-color: var(--border-blue); }
.contact-info__icon {
  width: 44px; height: 44px; border-radius: var(--radius-xs);
  background: var(--blue-dim);
  display: flex; align-items: center; justify-content: center;
  color: var(--blue-bright); flex-shrink: 0;
}
.contact-info__label { font-size: 0.78rem; font-weight: 700; color: var(--text-white); margin-bottom: 2px; }
.contact-info__value { font-size: 0.88rem; color: var(--text-secondary); }

/* 联系表单 */
.contact-form-card {
  padding: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}
.contact-form-card h3 { font-size: 1.3rem; margin-bottom: 6px; }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-size: 0.82rem; color: var(--text-secondary); margin-bottom: 6px;
}
.form-group label .required { color: var(--accent-orange); }
.form-control {
  width: 100%; padding: 13px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--dur-fast);
}
.form-control:focus {
  outline: none;
  border-color: var(--blue-primary);
  box-shadow: 0 0 0 3px var(--blue-dim);
}
textarea.form-control { resize: vertical; min-height: 100px; }
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23666' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

/* ============================================================
   搜索页
   ============================================================ */
.search-form-row { display: flex; gap: 10px; }
.search-input-wrap { position: relative; flex: 1; }
.search-input-wrap i {
  position: absolute; left: 16px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted); font-size: 0.95rem;
}
.search-form-row input {
  flex: 1; width: 100%;
  padding: 15px 20px; padding-left: 44px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  color: var(--text-primary); font-size: 0.95rem;
}
.search-form-row input:focus { outline: none; border-color: var(--blue-primary); box-shadow: 0 0 0 3px var(--blue-dim); }
.search-result-item {
  display: flex; gap: 16px;
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--dur-fast);
  margin-bottom: 10px;
}
.search-result-item:hover { border-color: var(--border-blue); background: var(--bg-card-hover); }
.search-result-item__thumb {
  width: 100px; height: 80px; border-radius: var(--radius-xs);
  overflow: hidden; flex-shrink: 0; background: var(--bg-elevated);
}
.search-result-item__thumb img { width: 100%; height: 100%; object-fit: cover; }
.search-result-item__info { flex: 1; min-width: 0; }
.search-result-item__title {
  font-size: 1rem; font-weight: 600; color: var(--text-white);
  margin-bottom: 4px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.search-result-item__date { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 4px; }
.search-result-item__desc {
  font-size: 0.84rem; color: var(--text-secondary);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* ============================================================
   Footer 底部
   ============================================================ */
.footer {
  background: #0A0A0A;
  border-top: 1px solid var(--border-subtle);
}
.footer__top-line {
  height: 2px;
  background: var(--blue-gradient);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding: 60px 0 40px;
  max-width: var(--container-max); margin: 0 auto;
  padding-left: 24px; padding-right: 24px;
}
.footer__brand-desc {
  font-size: 0.85rem; color: var(--text-secondary);
  line-height: 1.7; margin: 16px 0;
}
.footer__social { display: flex; gap: 10px; }
.footer__social a {
  width: 36px; height: 36px; border-radius: var(--radius-xs);
  background: rgba(255,255,255,0.04);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 0.9rem;
  transition: all var(--dur-fast);
}
.footer__social a:hover { background: var(--blue-primary); color: #fff; }
.footer__col-title {
  font-size: 0.95rem; font-weight: 700; color: var(--text-white);
  margin-bottom: 20px; position: relative; padding-bottom: 10px;
}
.footer__col-title::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 20px; height: 2px; background: var(--blue-primary);
}
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links a {
  font-size: 0.85rem; color: var(--text-secondary);
  transition: color var(--dur-fast);
}
.footer__links a:hover { color: var(--blue-bright); }
.footer__contact-item {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.83rem; color: var(--text-secondary); margin-bottom: 10px;
}
.footer__contact-item i { color: var(--blue-bright); margin-top: 3px; flex-shrink: 0; }
.footer__qrcode {
  width: 110px; height: 110px; background: #fff;
  border-radius: var(--radius-xs); padding: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.65rem; color: #999;
}
.footer__bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 20px 0;
}
.footer__bottom-inner {
  display: flex; justify-content: space-between; align-items: center;
  max-width: var(--container-max); margin: 0 auto;
  padding: 0 24px; font-size: 0.78rem; color: var(--text-muted);
  flex-wrap: wrap; gap: 8px;
}
.footer__bottom a { color: var(--text-muted); }
.footer__bottom a:hover { color: var(--blue-bright); }

/* ============================================================
   友情链接
   ============================================================ */
.friend-links {
  display: flex; flex-wrap: wrap; gap: 14px; align-items: center;
  padding: 16px 0;
}
.friend-links__label {
  font-size: 0.8rem; color: var(--text-muted); flex-shrink: 0;
}
.friend-links a {
  font-size: 0.8rem; color: var(--text-muted);
  transition: color var(--dur-fast);
}
.friend-links a:hover { color: var(--blue-bright); }

/* ============================================================
   返回顶部
   ============================================================ */
.back-top {
  position: fixed; right: 20px; bottom: 80px;
  width: 40px; height: 40px; border-radius: var(--radius-xs);
  background: rgba(10,107,255,0.15);
  border: 1px solid var(--border-blue);
  color: var(--blue-bright);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; cursor: pointer; z-index: 800;
  opacity: 0; pointer-events: none;
  transition: all var(--dur-normal);
}
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { background: var(--blue-primary); color: #fff; }

/* ============================================================
   在线客服按钮
   ============================================================ */
.kefu-btn {
  position: fixed; right: 20px; bottom: 134px;
  width: 44px; height: 44px; border-radius: var(--radius-xs);
  background: var(--blue-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; cursor: pointer; z-index: 800;
  box-shadow: 0 4px 20px var(--blue-glow);
  transition: all var(--dur-normal);
}
.kefu-btn:hover { transform: scale(1.08); }
.kefu-popup {
  position: fixed; right: 76px; bottom: 134px;
  width: 220px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 20px;
  z-index: 799;
  opacity: 0; visibility: hidden;
  transform: translateX(10px);
  transition: all var(--dur-normal);
}
.kefu-popup.show { opacity: 1; visibility: visible; transform: translateX(0); }
.kefu-popup__item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 0; font-size: 0.88rem; color: var(--text-white);
  border-bottom: 1px solid var(--border-subtle);
}
.kefu-popup__item:last-child { border-bottom: none; }
.kefu-popup__item i { color: var(--blue-bright); font-size: 1rem; }

/* ============================================================
   动画
   ============================================================ */
/* AOS覆盖 */
[data-aos] { transition-timing-function: var(--ease-out); }

/* 数字滚动区域 */
@keyframes dataPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; }
}
.stat-item__number { animation: dataPulse 3s ease-in-out infinite; }

/* 按钮脉冲 */
@keyframes btnPulse {
  0% { box-shadow: 0 0 0 0 rgba(10, 107, 255, 0.4); }
  70% { box-shadow: 0 0 0 14px rgba(10, 107, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(10, 107, 255, 0); }
}
.btn--primary.pulse { animation: btnPulse 2s infinite; }

/* 光条扫描 */
@keyframes shimmerSweep {
  0% { transform: translateX(-100%) skewX(-15deg); }
  100% { transform: translateX(200%) skewX(-15deg); }
}
.shimmer-overlay { position: relative; overflow: hidden; }
.shimmer-overlay::after {
  content: ''; position: absolute; top: 0; left: 0;
  width: 60%; height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.015) 40%, rgba(255,255,255,0.03) 50%, rgba(255,255,255,0.015) 60%, transparent 100%);
  transform: translateX(-100%) skewX(-15deg);
  pointer-events: none;
}
.shimmer-overlay:hover::after {
  animation: shimmerSweep 0.8s ease-in-out;
}

/* Hero 标题入场 */
@keyframes fadeInUp {
  0% { opacity: 0; transform: translateY(24px); }
  100% { opacity: 1; transform: translateY(0); }
}
.hero__title { animation: fadeInUp 0.8s var(--ease-out) both; }
.hero__subtitle { animation: fadeInUp 0.8s var(--ease-out) 0.15s both; }
.hero__actions { animation: fadeInUp 0.7s var(--ease-out) 0.3s both; }

/* ============================================================
   响应式 — 平板 (768px-1023px)
   ============================================================ */
@media (max-width: 1023px) {
  :root { --section-py: 60px; --header-h: 60px; }
  .header__nav, .header__actions { display: none; }
  .hamburger { display: flex; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .product-cats { grid-template-columns: repeat(2, 1fr); }
  .featured-products { grid-template-columns: repeat(2, 1fr); }
  .tech-metrics { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .news-mini-grid { grid-template-columns: repeat(2, 1fr); }
  .list-layout { grid-template-columns: 1fr; }
  .list-sidebar { position: static; margin-bottom: 20px; }
  .product-detail-layout { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 1fr; gap: 24px; }
  .timeline-item::after { display: none; }
  .timeline::before { left: 20px; }
  .contact-grid { grid-template-columns: 1fr; }
  .oem-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   响应式 — 移动端 (<768px)
   ============================================================ */
@media (max-width: 767px) {
  :root { --section-py: 48px; }
  .hero { height: 85vh; min-height: 480px; }
  .hero__content { padding-bottom: 60px; }
  .hero__scroll-indicator { display: none; }
  .inner-banner { height: 200px; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-item { padding: 24px 12px; }
  .product-cats { grid-template-columns: 1fr; }
  .featured-products { grid-template-columns: 1fr; }
  .tech-metrics { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .news-mini-grid { grid-template-columns: 1fr; }
  .oem-cta { padding: 36px 20px; }
  .news-list-item { flex-direction: column; }
  .news-list-item__thumb { width: 100%; height: 160px; }
  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .footer__bottom-inner { flex-direction: column; text-align: center; }
  .search-result-item { flex-direction: column; }
  .search-result-item__thumb { width: 100%; height: 140px; }
  .back-top { right: 10px; bottom: 50px; }
}

/* ============================================================
   减少动画偏好
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}