/**
 * ChipSource — 电子元器件/半导体企业站
 * 暗色精密主题：深蓝灰基底 + 科技蓝 + 银灰辅色
 * 数据手册风格排版 / 小圆角精密感
 * 纯原生 CSS，无框架依赖
 */

/* ============================================================
   CSS 变量体系 — 精密科技暗色主题
   ============================================================ */
:root {
  /* 基底色 — 深蓝灰 */
  --bg-deep: #060F1E;
  --bg-primary: #0A1628;
  --bg-secondary: #0D1B2A;
  --bg-card: rgba(26, 107, 176, 0.04);
  --bg-card-hover: rgba(26, 107, 176, 0.08);
  --bg-input: rgba(255, 255, 255, 0.03);
  --bg-input-focus: rgba(255, 255, 255, 0.05);

  /* 科技蓝 — 强调色 */
  --accent: #1A6BB0;
  --accent-light: #1E88E5;
  --accent-dim: rgba(26, 107, 176, 0.15);
  --accent-glow: rgba(26, 107, 176, 0.25);

  /* 银灰 — 辅助 */
  --silver: #8A9BB5;
  --silver-dim: #5A6E85;

  /* 文字色阶 */
  --text-primary: #E8EDF5;
  --text-secondary: #B0BEC5;
  --text-muted: #546E7A;

  /* 边框 */
  --border-subtle: rgba(138, 155, 181, 0.08);
  --border-accent: rgba(26, 107, 176, 0.25);
  --border-glow: rgba(30, 136, 229, 0.15);

  /* 阴影 */
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.5);
  --shadow-glow-blue: 0 0 30px rgba(26, 107, 176, 0.1);
  --shadow-glow-cyan: 0 0 20px rgba(30, 136, 229, 0.08);

  /* 圆角 — 精密小圆角 */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;

  /* 间距 */
  --section-py: 100px;
  --container-max: 1200px;
  --header-h: 72px;

  /* 过渡 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  /* 字体 — Inter(Latin) + 高质量中文字体 */
  --font-heading: 'Inter', 'HarmonyOS Sans SC', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'HarmonyOS Sans SC', 'PingFang SC', 'Noto Sans SC', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', '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%;
  font-size: 16px;
}

body {
  background: var(--bg-deep);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.8;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* 深色背景纹路 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 60% 50% at 15% 8%, rgba(26, 107, 176, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 15%, rgba(30, 136, 229, 0.03) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 50% 85%, rgba(26, 107, 176, 0.025) 0%, transparent 60%),
    linear-gradient(180deg, #060F1E 0%, #0A1628 40%, #0D1B2A 100%);
  pointer-events: none;
}

::selection { background: rgba(26, 107, 176, 0.3); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: rgba(138, 155, 181, 0.15); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(138, 155, 181, 0.3); }

a { color: inherit; text-decoration: none; transition: color var(--duration-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: 1.35;
  letter-spacing: 0.02em;
}

.section-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}

.section-title {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.03em;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* 数据手册风格标题编号 */
.section-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-light);
  letter-spacing: 0.1em;
}

/* ============================================================
   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--alt { background: rgba(10, 22, 40, 0.5); }

/* 区块顶部分割线（电路板线条风格） */
.section::before {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: var(--border-accent);
  margin: 0 auto 0;
  opacity: 0;
}

/* ============================================================
   Header — 深色固定导航
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(6, 15, 30, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.header.scrolled {
  background: rgba(6, 15, 30, 0.98);
  box-shadow: 0 1px 30px 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: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #fff;
  position: relative;
  overflow: hidden;
}

/* 芯片引脚装饰 */
.header__logo-icon::after {
  content: '';
  position: absolute;
  left: 2px;
  right: 2px;
  top: 2px;
  bottom: 2px;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 2px;
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.header__logo-sub {
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-light);
  font-family: var(--font-mono);
}

/* 主导航 */
.header__nav { display: flex; align-items: center; gap: 2px; }

.header__nav-link {
  padding: 8px 14px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--text-primary);
  background: rgba(26, 107, 176, 0.08);
}

/* 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(10, 22, 40, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-accent);
  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(--duration-normal) var(--ease-out);
  z-index: 60; /* ★ 13.3 */
}

.header__dropdown a {
  display: block;
  padding: 9px 18px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.header__dropdown a:hover {
  color: var(--text-primary);
  background: rgba(26, 107, 176, 0.08);
}

/* 头部右侧操作区 */
.header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 20px;
}

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--accent);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-xs);
  border: 1px solid transparent;
  transition: all var(--duration-fast) var(--ease-out);
}

.header__cta:hover {
  background: var(--accent-light);
  color: #fff;
  box-shadow: var(--shadow-glow-blue);
  transform: translateY(-1px);
}

/* ============================================================
   汉堡菜单（移动端）★ 13.4 独立在 header__actions 外
   ============================================================ */
.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: 110;
  margin-left: 8px;
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--duration-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: 80%;
  max-width: 340px;
  background: rgba(10, 22, 40, 0.99);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  z-index: 120;
  transform: translateX(-100%);
  transition: transform var(--duration-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: 13px 16px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  transition: all var(--duration-fast) var(--ease-out);
}

.mobile-nav__link:hover { color: var(--text-primary); background: rgba(26,107,176,0.06); }

.mobile-nav__sub {
  padding-left: 16px;
  display: none;
  border-left: 1px solid var(--border-subtle);
  margin-left: 16px;
}

.mobile-nav__sub.open { display: block; }

.mobile-nav__sub a {
  display: block;
  padding: 9px 16px;
  font-size: 0.85rem;
  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: 115;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.mobile-nav__overlay.show { opacity: 1; pointer-events: auto; }

/* ============================================================
   按钮系统
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-xs);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
}

.btn--primary:hover {
  background: var(--accent-light);
  color: #fff;
  box-shadow: var(--shadow-glow-blue);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-accent);
}

.btn--outline:hover {
  border-color: var(--accent-light);
  background: var(--accent-dim);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.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-primary); }

.btn--pill {
  border-radius: 50px;
  padding: 8px 20px;
  font-size: 0.82rem;
}

.btn--sm { padding: 6px 14px; font-size: 0.8rem; }

/* ============================================================
   卡片系统 — 深色卡片 + 蓝色细边框
   ============================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
  transform: translateY(-2px);
}

.card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--bg-secondary);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.card:hover .card__image img { transform: scale(1.04); }

.card__body { padding: 18px 20px; }

.card__tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 0.65rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--accent-light);
  background: var(--accent-dim);
  border-radius: 3px;
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.card__title {
  font-family: var(--font-heading);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.card__meta i { color: var(--accent-light); font-size: 0.7rem; }

/* ============================================================
   Hero Banner — 首页全屏轮播
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  background: var(--bg-deep);
}

.hero__canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.hero .swiper {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(6,15,30,0.5) 0%, rgba(6,15,30,0.2) 40%, rgba(6,15,30,0.9) 100%),
    radial-gradient(ellipse at center, transparent 50%, rgba(6,15,30,0.4) 100%);
}

.hero__content {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--header-h);
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 1rem;
  text-shadow: 0 2px 40px rgba(0,0,0,0.5);
}

.hero__title span {
  background: linear-gradient(90deg, var(--accent-light), #64B5F6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: rgba(255,255,255,0.7);
  margin-bottom: 2rem;
  max-width: 560px;
  font-weight: 300;
}

.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.35);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  animation: scrollFloat 2s ease-in-out infinite;
}

.hero__scroll-line {
  width: 1px;
  height: 28px;
  background: linear-gradient(180deg, var(--accent-light), transparent);
}

@keyframes scrollFloat {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* Hero Swiper分页器 */
.hero-pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 32px;
}

.hero-pagination .swiper-pagination-bullet {
  width: 32px;
  height: 2px;
  border-radius: 1px;
  background: rgba(255,255,255,0.25);
  opacity: 1;
  transition: all var(--duration-normal);
}

.hero-pagination .swiper-pagination-bullet-active {
  width: 50px;
  background: var(--accent-light);
  box-shadow: 0 0 10px var(--accent-light);
}

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative;
  height: 320px;
  overflow: hidden;
  background: var(--bg-secondary);
}

.inner-banner__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.inner-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6,15,30,0.75) 0%, rgba(6,15,30,0.5) 50%, var(--bg-primary) 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(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.inner-banner__subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* 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: 12px 24px;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb i { font-size: 0.6rem; color: var(--text-muted); }

/* ============================================================
   产品分类卡片（首页模块2）
   ============================================================ */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.category-card {
  text-align: center;
  padding: 36px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.category-card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-cyan);
}

.category-card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: var(--radius-xs);
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  color: var(--accent-light);
  transition: all var(--duration-normal) var(--ease-out);
}

.category-card:hover .category-card__icon {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-glow-blue);
}

.category-card__name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.category-card__count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ============================================================
   产品网格（首页模块3 + 列表页）
   ============================================================ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.product-card .card__image {
  background: var(--bg-secondary);
  position: relative;
}

/* 芯片引脚装饰线 */
.product-card .card__image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
  opacity: 0;
  transition: opacity var(--duration-normal);
}

.product-card:hover .card__image::after { opacity: 1; }

.product-card .card__specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.product-card .card__spec {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 3px 8px;
  background: rgba(26,107,176,0.06);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  color: var(--silver-dim);
}

/* ============================================================
   技术工艺区块（首页模块4）
   ============================================================ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.process-card {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 3/4;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
}

.process-card__image {
  position: absolute;
  inset: 0;
}

.process-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

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

.process-card__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px 24px;
  background: linear-gradient(transparent, rgba(6,15,30,0.95));
}

.process-card__num {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(26,107,176,0.2);
  line-height: 1;
  margin-bottom: 8px;
}

.process-card__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.process-card__spec {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-light);
  letter-spacing: 0.05em;
}

/* ============================================================
   应用场景（首页模块5）
   ============================================================ */
.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.app-card {
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
}

.app-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.app-card__icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  background: var(--accent-dim);
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--accent-light);
}

.app-card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.app-card__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.app-card__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-top: 14px;
}

.app-card__chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 3px 10px;
  background: rgba(26,107,176,0.06);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  color: var(--accent-light);
}

/* ============================================================
   数据实力 — 数字滚动（首页模块6）
   ============================================================ */
.stats-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(26,107,176,0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(30,136,229,0.03) 0%, transparent 50%);
  pointer-events: none;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
  position: relative;
}

.stat-item__number {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  color: var(--accent-light);
  line-height: 1;
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}

.stat-item__label {
  font-size: 0.85rem;
  color: var(--silver-dim);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* ============================================================
   新闻列表
   ============================================================ */
.news-list { display: flex; flex-direction: column; gap: 16px; }

.news-item {
  display: flex;
  gap: 24px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.news-item:hover { border-color: var(--border-accent); background: var(--bg-card-hover); }

.news-item__thumb {
  width: 200px;
  height: 140px;
  border-radius: var(--radius-xs);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-secondary);
}

.news-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-item__info { flex: 1; min-width: 0; }

.news-item__date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-light);
  margin-bottom: 8px;
}

.news-item__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.news-item__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   CTA 区块（首页模块8）
   ============================================================ */
.cta-section {
  text-align: center;
  padding: 80px 0 100px;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(26,107,176,0.06) 0%, transparent 70%);
  pointer-events: none;
  border-radius: 50%;
}

.cta-section__title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  margin-bottom: 1rem;
  position: relative;
}

.cta-section__grid {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.cta-section__item {
  padding: 12px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.cta-section__item i { color: var(--accent-light); margin-right: 6px; }

/* ============================================================
   详情页
   ============================================================ */
.detail { max-width: 900px; margin: 0 auto; }

.detail__title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin-bottom: 16px;
}

.detail__meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.detail__meta-row i { margin-right: 4px; color: var(--accent-light); }

/* 参数规格卡片 */
.detail__params {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 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);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.detail__param-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* 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;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--duration-fast);
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  font-weight: 500;
}

.detail__tab:hover { color: var(--text-primary); }
.detail__tab.active {
  color: var(--accent-light);
  border-bottom-color: var(--accent-light);
}

.detail__tab-panel { display: none; }
.detail__tab-panel.active { display: block; }

/* 正文 */
.detail__body {
  color: var(--text-secondary);
  line-height: 2;
  font-size: 0.93rem;
  letter-spacing: 0.015em;
}

.detail__body img { border-radius: var(--radius-xs); margin: 20px 0; max-width: 100%; }
.detail__body p { margin-bottom: 14px; }
.detail__body h2, .detail__body h3 { font-family: var(--font-heading); color: var(--text-primary); margin-top: 28px; margin-bottom: 14px; }

/* 上下篇 */
.detail__pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 48px;
  padding-top: 20px;
  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(--accent-light); }

/* ============================================================
   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: 38px;
  height: 38px;
  padding: 0 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  border: 1px solid transparent;
  transition: all var(--duration-fast) var(--ease-out);
}

.pagination a:hover { background: var(--bg-card); color: var(--text-primary); border-color: var(--border-subtle); }
.pagination .active { background: var(--accent); color: #fff; font-weight: 600; border-color: var(--accent); }
.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; opacity: 0.4; }
.empty-state p { color: var(--text-muted); font-size: 0.9rem; }

/* ============================================================
   子栏目过滤栏
   ============================================================ */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding: 16px 0;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.filter-bar::-webkit-scrollbar { display: none; }

.filter-bar a {
  display: inline-flex;
  padding: 8px 16px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 50px;
  white-space: nowrap;
  transition: all var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

.filter-bar a:hover, .filter-bar a.active {
  color: var(--accent-light);
  border-color: var(--accent);
  background: var(--accent-dim);
}

/* ============================================================
   产品列表页
   ============================================================ */
.list-header { text-align: center; margin-bottom: 48px; }

.list-header h1 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-bottom: 0.5rem;
}

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

/* ============================================================
   搜索页
   ============================================================ */
.search-box { max-width: 650px; margin: 0 auto; }

.search-form-row { display: flex; gap: 10px; }

/* min-width:0 —— 否则 input 的固有宽度会把窄屏撑出横向滚动 */
.search-input-wrap { position: relative; flex: 1; min-width: 0; }

.search-input-wrap i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.search-form-row input {
  flex: 1;
  min-width: 0;
  padding: 14px 18px 14px 40px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  color: var(--text-primary);
  font-size: 0.92rem;
  transition: border-color var(--duration-fast);
}

.search-form-row input:focus { outline: none; border-color: var(--accent); }

.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(--duration-fast) var(--ease-out);
  margin-bottom: 10px;
}

.search-result-item:hover { border-color: var(--border-accent); background: var(--bg-card-hover); }

.search-result-item__thumb {
  width: 100px;
  height: 75px;
  border-radius: var(--radius-xs);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-secondary);
}

.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-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.search-result-item__date { font-size: 0.72rem; color: var(--text-muted); font-family: var(--font-mono); margin-bottom: 4px; }
.search-result-item__desc { font-size: 0.82rem; color: var(--text-secondary); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ============================================================
   联系我们
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  transition: all var(--duration-fast) var(--ease-out);
}

.contact-info__item:hover { border-color: var(--border-accent); }

.contact-info__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-xs);
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
  flex-shrink: 0;
  font-size: 0.9rem;
}

.contact-info__label { font-size: 0.75rem; font-weight: 600; color: var(--text-primary); font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 2px; }

.contact-info__value { font-size: 0.9rem; color: var(--text-secondary); }

/* 关于页 — 公司信息三列 */
.about-info-grid {
  margin-top: 60px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* 技术资料 — 分类卡片三列 */
.tech-cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

/* 表单行（原先为内联网格，移动端无法覆盖） */
.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 14px;
}

/* 询价表单卡片 */
.inquiry-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-sm);
  position: relative;
}

.inquiry-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 20px;
  right: 20px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-light), transparent);
}

/* ============================================================
   表单
   ============================================================ */
.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--silver-dim);
  margin-bottom: 6px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.form-group label .required { color: #EF5350; }

.form-control {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  color: var(--text-primary);
  font-size: 0.88rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px var(--accent-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='10' height='10' fill='%23546E7A' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
}

.footer__top-line {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.3;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding: 56px 0 36px;
  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: 14px 0;
}

.footer__social {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.footer__social a {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-xs);
  background: rgba(255,255,255,0.03);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.footer__social a:hover { background: var(--accent); color: #fff; }

.footer__col-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.footer__links { display: flex; flex-direction: column; gap: 9px; }

.footer__links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

.footer__links a:hover { color: var(--accent-light); }

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.83rem;
  color: var(--text-secondary);
  margin-bottom: 9px;
}

.footer__contact-item i { color: var(--accent-light); margin-top: 3px; flex-shrink: 0; font-size: 0.8rem; }

.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;
  text-align: center;
}

.footer__bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 18px 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(--accent-light); }

/* 友链 */
.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  padding: 14px 0;
}

.friend-links__label { font-size: 0.8rem; color: var(--text-muted); flex-shrink: 0; font-family: var(--font-mono); }
.friend-links a { font-size: 0.8rem; color: var(--text-muted); transition: color var(--duration-fast); }
.friend-links a:hover { color: var(--accent-light); }

/* ============================================================
   返回顶部
   ============================================================ */
.back-top {
  position: fixed;
  right: 20px;
  bottom: 80px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-xs);
  background: rgba(26,107,176,0.15);
  border: 1px solid var(--border-accent);
  color: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  cursor: pointer;
  z-index: 80;
  opacity: 0;
  pointer-events: none;
  transition: all var(--duration-normal) var(--ease-out);
}

.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ============================================================
   在线客服按钮
   ============================================================ */
.online-service {
  position: fixed;
  right: 20px;
  bottom: 132px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  cursor: pointer;
  z-index: 80;
  box-shadow: 0 4px 20px rgba(26,107,176,0.3);
  transition: all var(--duration-normal) var(--ease-out);
  animation: servicePulse 2s ease-in-out infinite;
}

.online-service:hover { background: var(--accent-light); transform: scale(1.08); }

@keyframes servicePulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(26,107,176,0.3); }
  50% { box-shadow: 0 4px 32px rgba(26,107,176,0.5); }
}

/* ============================================================
   动画系统
   ============================================================ */

/* 电路线条扫描 */
@keyframes traceLine {
  0% { background-position: 0% 0%; }
  100% { background-position: 200% 0%; }
}

.trace-line {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 20%, var(--accent-light) 50%, var(--accent) 80%, transparent 100%);
  background-size: 200% 100%;
  animation: traceLine 3s ease-in-out infinite;
}

/* 光晕呼吸 */
@keyframes glowBreath {
  0%, 100% { box-shadow: 0 0 8px rgba(26,107,176,0.1); }
  50% { box-shadow: 0 0 24px rgba(26,107,176,0.25), 0 0 48px rgba(26,107,176,0.08); }
}

.glow-breath { animation: glowBreath 3s ease-in-out infinite; }

/* 悬浮漂移 */
@keyframes floatUp {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.float-element { animation: floatUp 4s ease-in-out infinite; }

/* 流光文字 */
@keyframes textShimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

.text-shimmer {
  background: linear-gradient(90deg, var(--accent-light) 0%, #64B5F6 50%, var(--accent-light) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textShimmer 4s linear infinite;
}

/* 数字滚动粒子 */
@keyframes particleRise {
  0% { transform: translateY(0) scale(1); opacity: 0.5; }
  100% { transform: translateY(-50px) scale(0); opacity: 0; }
}

.stat-particle {
  position: absolute;
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: var(--accent-light);
  animation: particleRise 2s ease-out infinite;
  pointer-events: none;
}

/* 卡片入场错位 */
.card[data-aos] { transition: all var(--duration-normal) var(--ease-out); }

/* 星光闪烁 */
@keyframes twinkle {
  0%, 100% { opacity: 0.2; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.6); }
}

.star-dot {
  position: absolute;
  width: 1.5px;
  height: 1.5px;
  background: #fff;
  border-radius: 50%;
  animation: twinkle 3s ease-in-out infinite;
  pointer-events: none;
}

/* 按钮脉冲 */
@keyframes btnPulse {
  0% { box-shadow: 0 0 0 0 rgba(26,107,176,0.4); }
  70% { box-shadow: 0 0 0 10px rgba(26,107,176,0); }
  100% { box-shadow: 0 0 0 0 rgba(26,107,176,0); }
}

.pulse {
  animation: btnPulse 2s infinite;
}

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

/* ============================================================
   响应式 — 平板 (768px - 1023px)
   ============================================================ */
@media (max-width: 1023px) {
  :root { --section-py: 70px; }

  .header__nav, .header__actions { display: none; }
  .hamburger { display: flex; }

  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; }
  .list-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }

  .news-item { flex-direction: column; }
  .news-item__thumb { width: 100%; height: 180px; }

  .detail__pager { flex-direction: column; gap: 8px; text-align: center; }
}

/* ============================================================
   响应式 — 移动端 (< 768px)
   ============================================================ */
@media (max-width: 767px) {
  :root { --section-py: 44px; }

  .container { padding-left: 16px; padding-right: 16px; }

  /* 区块标题紧凑化 */
  .section-header,
  .section > .container > div[style*="margin-bottom:48px"] {
    margin-bottom: 24px !important;
  }
  .section-title { font-size: 1.45rem; }
  .section-subtitle { font-size: 0.88rem; line-height: 1.6; }
  .section-tag { font-size: 0.62rem; padding: 3px 10px; margin-bottom: 0.55rem; }

  .hero { height: 72vh; min-height: 400px; }
  .hero__content { padding-top: 48px; }
  .hero__title { font-size: 1.8rem; }
  .hero__subtitle { font-size: 0.9rem; }
  .hero__scroll { display: none; }
  .hero__actions { gap: 10px; }
  .hero__actions .btn { flex: 1 1 0; min-width: 0; padding-left: 12px; padding-right: 12px; }

  .inner-banner { height: 190px; }

  /* ★ 产品·系列：2×2 紧凑 */
  .category-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .category-card { padding: 18px 12px; }
  .category-card__icon {
    width: 42px; height: 42px; font-size: 1.05rem; margin: 0 auto 10px;
  }
  .category-card__name { font-size: 0.9rem; }
  .category-card__count { font-size: 0.72rem; }

  /* ★ 主推·器件：单列大卡 → 两列紧凑网格 */
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    max-width: none;
    margin: 0;
  }
  .product-card .card__image { aspect-ratio: 1 / 1; }
  .product-card .card__body { padding: 12px 12px 14px; }
  .product-card .card__tag {
    font-size: 0.56rem; padding: 2px 6px; margin-bottom: 5px;
    max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  }
  .product-card .card__title {
    font-size: 0.85rem; line-height: 1.35; margin-bottom: 0;
    -webkit-line-clamp: 2;
  }
  /* 两列下描述与规格标签会撑高卡片，省略 */
  .product-card .card__desc,
  .product-card .card__specs { display: none; }

  /* ★ 技术·工艺：3 张大图卡 → 紧凑步骤条 */
  .process-grid { grid-template-columns: 1fr; gap: 10px; }
  .process-card {
    aspect-ratio: auto;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px;
    overflow: hidden;
  }
  .process-card__image {
    position: static;
    width: 76px;
    height: 76px;
    flex-shrink: 0;
    border-radius: var(--radius-xs);
    overflow: hidden;
  }
  .process-card__overlay {
    position: static;
    padding: 0;
    background: none;
    flex: 1;
    min-width: 0;
  }
  .process-card__num { font-size: 1.4rem; margin-bottom: 2px; }
  .process-card__title { font-size: 0.98rem; margin-bottom: 3px; }
  .process-card__spec { font-size: 0.68rem; letter-spacing: 0.02em; }

  /* ★ 应用·场景：图标左 + 内容右 */
  .app-grid { grid-template-columns: 1fr; gap: 10px; }
  .app-card {
    display: grid;
    grid-template-columns: 42px 1fr;
    column-gap: 14px;
    align-items: start;
    text-align: left;
    padding: 16px 14px;
  }
  .app-card__icon {
    grid-column: 1;
    grid-row: 1 / span 2;
    width: 42px; height: 42px; font-size: 1.05rem; margin: 0;
  }
  .app-card__title { grid-column: 2; font-size: 0.95rem; margin-bottom: 6px; }
  .app-card__desc { grid-column: 2; font-size: 0.78rem; line-height: 1.6; }
  .app-card__chips {
    grid-column: 1 / -1;
    justify-content: flex-start;
    margin-top: 10px;
  }

  /* 数据·实力 */
  .stats { grid-template-columns: repeat(2, 1fr); gap: 22px 12px; }

  /* ★ 新闻·技术：缩略图列表 */
  .news-list { gap: 10px; }
  .news-item { flex-direction: row; gap: 12px; padding: 12px; align-items: center; }
  .news-item__thumb { width: 96px; height: 72px; }
  .news-item__date { font-size: 0.66rem; margin-bottom: 4px; }
  .news-item__title { font-size: 0.88rem; line-height: 1.4; margin-bottom: 4px; }
  .news-item__desc { font-size: 0.76rem; -webkit-line-clamp: 2; }

  /* 列表页 / 详情页 */
  .list-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; max-width: none; margin: 0; }
  .card__body { padding: 14px 16px; }
  .contact-form-card, .inquiry-card { padding: 18px; }
  .detail__params { grid-template-columns: repeat(2, 1fr); }

  /* 原先的内联网格：改成类名后移动端可覆盖 */
  .about-info-grid { margin-top: 32px; grid-template-columns: 1fr; gap: 10px; }
  .tech-cat-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 24px; }
  .form-grid-2,
  .form-grid-3 { grid-template-columns: 1fr; gap: 12px; }
  .form-grid-3 { margin-bottom: 12px; }
  .detail__tabs { overflow-x: auto; }
  .detail__tab { white-space: nowrap; }
  .search-result-item { flex-direction: column; }
  .search-result-item__thumb { width: 100%; height: 150px; }

  /* CTA */
  .cta-section { padding: 44px 0 48px; }
  .cta-section__title { font-size: 1.5rem; margin-bottom: 0.7rem; }
  .cta-section__grid { gap: 8px; margin-bottom: 20px; }
  .cta-section__item { padding: 8px 14px; font-size: 0.78rem; }

  /* Footer：品牌通栏 + 2 列 */
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 16px;
    padding: 32px 0 24px;
    padding-left: 16px;
    padding-right: 16px;
  }
  .footer__grid > div:first-child { grid-column: 1 / -1; }
  .footer__brand-desc { font-size: 0.82rem; }
  .footer__col-title { font-size: 0.9rem; margin-bottom: 10px; }
  .footer__links { gap: 6px; }
  .footer__contact-item { font-size: 0.78rem; }
  .footer__qrcode { width: 86px; height: 86px; }
  .footer__bottom { padding: 14px 0; }
  .footer__bottom-inner {
    flex-direction: column;
    text-align: center;
    gap: 6px;
    padding: 0 16px;
    font-size: 0.72rem;
  }

  .back-top { right: 12px; bottom: 60px; }
  .online-service { right: 12px; bottom: 108px; }
}

/* ============================================================
   响应式 — 小屏手机 (< 375px)
   ============================================================ */
@media (max-width: 374px) {
  body { font-size: 0.9rem; }
  .category-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
}

/* ============================================================
   偏好：减少动画
   ============================================================ */
@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;
  }
}