/**
 * Aurora Tech | 极光科技 — 消费电子品牌网站
 * 设计系统：白底 + 深灰(#2D2D2D)对比 + 亮蓝(#2563EB)强调
 * 风格：大留白 · 杂志感 · 产品画册 · 干净利落
 * 技术：原生CSS · FA6图标 · Swiper轮播 · AOS动画
 * PBootCMS 第三方模板模式
 */

/* ============================================================
   CSS 变量体系
   ============================================================ */
:root {
  /* 背景色 */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FA;
  --bg-tertiary: #F1F3F5;
  --bg-dark: #2D2D2D;
  --bg-darker: #1A1A1A;

  /* 强调色 */
  --accent: #2563EB;
  --accent-hover: #1D4ED8;
  --accent-light: rgba(37, 99, 235, 0.06);
  --accent-glow: rgba(37, 99, 235, 0.12);

  /* 文字 */
  --text-primary: #1A1A1A;
  --text-secondary: #555555;
  --text-muted: #8B8B8B;
  --text-inverse: #FFFFFF;

  /* 边框 */
  --border: #E5E7EB;
  --border-light: #F0F2F5;
  --border-focus: rgba(37, 99, 235, 0.25);

  /* 阴影 */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.05), 0 1px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.08);

  /* 圆角 */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  /* 间距 */
  --section-py: 100px;
  --section-py-sm: 64px;
  --container-max: 1200px;
  --header-h: 72px;

  /* 过渡 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  /* 字体 — Inter(英文) + Noto Sans SC(中文) */
  --font-heading: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', '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%;
}

html {
  overflow-x: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
html::-webkit-scrollbar {
  display: none;
}
body {
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background: rgba(37, 99, 235, 0.15);
  color: var(--text-primary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}
img[data-src] {
  transition: opacity var(--duration-normal) var(--ease-out);
}
img[data-src].loaded {
  opacity: 1;
}

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: 1.28;
  letter-spacing: -0.01em;
}

.section-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
  padding: 4px 12px;
  background: var(--accent-light);
  border-radius: var(--radius-full);
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.7;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header--left {
  text-align: left;
}
.section-header--left .section-subtitle {
  margin: 0;
}

/* ============================================================
   布局容器
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: var(--section-py) 0;
}
.section--sm {
  padding: var(--section-py-sm) 0;
}
.section--dark {
  background: var(--bg-dark);
  color: var(--text-inverse);
}
.section--dark .section-title,
.section--dark .section-subtitle {
  color: var(--text-inverse);
}
.section--dark .section-subtitle {
  opacity: 0.7;
}
.section--gray {
  background: var(--bg-secondary);
}

/* ============================================================
   Header — 透明毛玻璃 + 滚动后白色实底
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all var(--duration-normal) var(--ease-out);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  margin-right: auto;
}

.header__logo-icon {
  width: 38px;
  height: 38px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.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: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

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

.header__nav-link {
  padding: 8px 15px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--accent);
  background: var(--accent-light);
}

/* 导航下拉 */
.header__nav-item {
  position: relative;
}

.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header__dropdown {
  overflow: visible;
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 170px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  z-index: 60;
}

.header__dropdown a {
  display: block;
  padding: 10px 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

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

/* 头部右侧操作区 */
.header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 20px;
}

.header__search-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.header__search-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  background: var(--accent);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  letter-spacing: -0.01em;
}

.header__cta:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* ============================================================
   汉堡菜单（移动端）
   ============================================================ */
.hamburger {
  display: none;
  position: relative;
  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: 22px;
  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: 82%;
  max-width: 360px;
  background: #fff;
  z-index: 120;
  transform: translateX(-100%);
  transition: transform var(--duration-normal) var(--ease-out);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.mobile-nav.open {
  transform: translateX(0);
  overflow-y: auto;
}

.mobile-nav__inner {
  padding: 24px;
  padding-top: 84px;
}

.mobile-nav__link {
  display: block;
  padding: 14px 16px;
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.mobile-nav__link:hover {
  background: var(--accent-light);
  color: var(--accent);
}

.mobile-nav__sub {
  padding-left: 16px;
  display: none;
}

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

.mobile-nav__sub a {
  display: block;
  padding: 10px 16px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
}

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  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: 13px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
}
.btn--primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
}

.btn--outline {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn--outline:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

.btn--outline-light {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}
.btn--outline-light:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.btn--ghost {
  background: var(--bg-secondary);
  color: var(--text-secondary);
}
.btn--ghost:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn--lg {
  padding: 16px 36px;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.btn--sm {
  padding: 9px 18px;
  font-size: 0.82rem;
}

/* ============================================================
   卡片系统 — 纯白 + 极轻阴影
   ============================================================ */
.card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  display: flex;
  flex-direction: column;
}

.card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  width: 100%;
  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: 20px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card__tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  border-radius: var(--radius-xs);
  margin-bottom: 8px;
  align-self: flex-start;
}

.card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
  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: 14px;
  border-top: 1px solid var(--border-light);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.card__price {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  margin-top: 8px;
}

/* 产品卡片 — 更大留白 */
.card--product .card__image {
  aspect-ratio: 1 / 1;
}
.card--product .card__body {
  padding: 24px;
}
.card--product .card__title {
  font-size: 1.1rem;
}

/* ============================================================
   Hero Banner — 全屏产品展示
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 620px;
  max-height: 900px;
  overflow: hidden;
  background: var(--bg-dark);
}

.hero .swiper {
  position: absolute;
  inset: 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(26, 26, 26, 0.25) 0%,
    rgba(26, 26, 26, 0.05) 35%,
    rgba(26, 26, 26, 0.55) 100%);
}

.hero__content {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: 112px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

.hero__tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 0.75rem;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 0.75rem;
  letter-spacing: -0.03em;
  max-width: 720px;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 2rem;
  font-weight: 400;
  max-width: 500px;
}

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

/* Hero 分页器 */
.hero__pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
}

.hero__pagination .swiper-pagination-bullet {
  width: 32px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.35);
  opacity: 1;
  transition: all var(--duration-normal);
  margin: 0;
}

.hero__pagination .swiper-pagination-bullet-active {
  width: 48px;
  background: #fff;
}

/* 滚动指示器 */
.hero__scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero__scroll-line {
  width: 1px;
  height: 28px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.5), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.3); }
}

/* ============================================================
   首页 — 产品展示（三列大卡片）
   ============================================================ */
.product-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-showcase .card__image {
  aspect-ratio: 4 / 3;
}

/* ============================================================
   首页 — 关于/理念（左文右图）
   ============================================================ */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.about-preview__image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--bg-secondary);
}

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

.about-preview__text {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 标签在 flex 列容器中不应拉伸成通栏 */
.about-preview__text .section-tag {
  align-self: flex-start;
}

.about-preview__text p {
  color: var(--text-secondary);
  line-height: 1.85;
  font-size: 0.98rem;
}

/* ============================================================
   首页 — 产品分类（四列图标）
   ============================================================ */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.category-card {
  text-align: center;
  padding: 36px 20px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.category-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.category-card__icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 18px;
  border-radius: var(--radius-md);
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent);
  transition: all var(--duration-normal) var(--ease-out);
}

.category-card:hover .category-card__icon {
  background: var(--accent);
  color: #fff;
  transform: scale(1.08);
}

.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-size: 0.82rem;
  color: var(--text-muted);
}

/* ============================================================
   首页 — 技术亮点（四列）
   ============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-item {
  text-align: center;
  padding: 32px 20px;
}

.feature-item__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: var(--radius-md);
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  color: var(--accent);
}

.feature-item__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.feature-item__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   首页 — 评价网格（四列）
   ============================================================ */
.review-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.review-card {
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
}

.review-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.review-card__stars {
  color: #F59E0B;
  font-size: 0.85rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-card__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.review-card__author {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
}

.review-card__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
}

.review-card__name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.review-card__tag {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ============================================================
   首页 — 新闻列表（左图右文）
   ============================================================ */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-item {
  display: flex;
  gap: 24px;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
  align-items: center;
}

.news-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.news-item__image {
  width: 180px;
  height: 120px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-secondary);
}

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

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

.news-item__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}

.news-item__date {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================================
   首页 — CTA 深色底
   ============================================================ */
.cta-section {
  background: var(--bg-dark);
  text-align: center;
  padding: 90px 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(37, 99, 235, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.cta-section__subtitle {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 36px;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative;
  height: 340px;
  overflow: hidden;
  background: var(--bg-dark);
  margin-top: var(--header-h);
}

.inner-banner__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.55;
}

.inner-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26, 26, 26, 0.5) 0%, rgba(26, 26, 26, 0.7) 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 32px;
}

.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: rgba(255, 255, 255, 0.65);
}

/* 面包屑 */
.breadcrumb-bar {
  background: #fff;
  border-bottom: 1px solid var(--border-light);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 14px 32px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

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

.breadcrumb i {
  font-size: 0.65rem;
  color: var(--text-muted);
}

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

.list-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 0.5rem;
}

.list-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* 子栏目过滤栏 */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 12px 0;
  margin-bottom: 40px;
}

.filter-bar a {
  display: inline-flex;
  padding: 8px 20px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: all var(--duration-fast) var(--ease-out);
}

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

/* 列表网格 */
.list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.list-grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ============================================================
   产品详情页
   ============================================================ */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: flex-start;
}

.product-detail__gallery {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-secondary);
}

.product-detail__gallery .swiper-slide {
  aspect-ratio: 1 / 1;
}

.product-detail__gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-detail__thumbs {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.product-detail__thumb {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--duration-fast);
  opacity: 0.5;
}

.product-detail__thumb.active {
  border-color: var(--accent);
  opacity: 1;
}

.product-detail__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-detail__info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.product-detail__category {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.product-detail__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.product-detail__model {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-muted);
}

.product-detail__price {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.product-detail__desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* 规格参数 */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 8px 0;
}

.spec-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

.spec-item__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.spec-item__value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* 颜色选择器 */
.color-options {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.color-dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--border);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.color-dot:hover,
.color-dot.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-light);
}

/* Tab 切换 */
.tab-nav {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border-light);
  margin-top: 20px;
}

.tab-btn {
  padding: 14px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: all var(--duration-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-panel {
  padding: 28px 0;
}

.tab-panel.hidden {
  display: none;
}

.tab-panel p {
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 14px;
}

.tab-panel img {
  border-radius: var(--radius-md);
  margin: 20px 0;
}

/* ============================================================
   文章详情页
   ============================================================ */
.article {
  max-width: 820px;
  margin: 0 auto;
}

.article__header {
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border-light);
}

.article__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 14px;
}

.article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

.article__body {
  color: var(--text-secondary);
  line-height: 2;
  font-size: 0.98rem;
}

.article__body p { margin-bottom: 18px; }

.article__body h2,
.article__body h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 36px;
  margin-bottom: 16px;
}

.article__body img {
  border-radius: var(--radius-md);
  margin: 24px 0;
}

/* 上下篇 */
.article__pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
  font-size: 0.88rem;
  flex-wrap: wrap;
  gap: 8px;
}

.article__pager a {
  color: var(--text-secondary);
}

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

/* 推荐列表 */
.related-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 56px 0 24px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ============================================================
   联系我们页
   ============================================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info-card {
  padding: 28px 24px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: all var(--duration-fast);
}

.contact-info-card:hover {
  background: #fff;
  box-shadow: var(--shadow-md);
}

.contact-info-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.contact-info-card__label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

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

/* 联系表单 */
.contact-form-wrap {
  padding: 36px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
}

.contact-form-wrap h3 {
  font-size: 1.35rem;
  margin-bottom: 6px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-group label .required {
  color: #EF4444;
}

.form-control {
  width: 100%;
  padding: 13px 16px;
  background: var(--bg-secondary);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--border-focus);
  background: #fff;
}

textarea.form-control {
  resize: vertical;
  min-height: 110px;
}

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='%238B8B8B' 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: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ============================================================
   搜索页
   ============================================================ */
.search-box {
  max-width: 680px;
  margin: 0 auto;
}

.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-input-wrap input {
  width: 100%;
  padding: 15px 20px 15px 44px;
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all var(--duration-fast);
}

.search-input-wrap input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--border-focus);
}

.search-result-item {
  display: flex;
  gap: 18px;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast);
  margin-bottom: 12px;
}

.search-result-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.search-result-item__thumb {
  width: 110px;
  height: 82px;
  border-radius: var(--radius-sm);
  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: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-result-item__date {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

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

/* ============================================================
   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: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
}

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

.pagination .active {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

.pagination .disabled {
  color: var(--text-muted);
  pointer-events: none;
  opacity: 0.4;
}

/* ============================================================
   空状态
   ============================================================ */
.empty-state {
  text-align: center;
  padding: 72px 20px;
}

.empty-state i {
  font-size: 3rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: block;
  opacity: 0.3;
}

.empty-state p {
  color: var(--text-muted);
  font-size: 1rem;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: #fff;
  border-top: 1px solid var(--border-light);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding: 64px 0 44px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

.footer__brand-desc {
  font-size: 0.88rem;
  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-sm);
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: all var(--duration-fast);
}

.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: 20px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

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

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.footer__contact-item i {
  color: var(--accent);
  margin-top: 3px;
  flex-shrink: 0;
  font-size: 0.85rem;
}

.footer__qrcode {
  width: 110px;
  height: 110px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}

/* 友情链接 */
.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  padding: 18px 0;
  border-top: 1px solid var(--border-light);
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

.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(--duration-fast);
}

.friend-links a:hover {
  color: var(--accent);
}

/* 版权栏 */
.footer__bottom {
  border-top: 1px solid var(--border-light);
  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 32px;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}

.footer__bottom-inner a {
  color: var(--text-muted);
}

.footer__bottom-inner a:hover {
  color: var(--accent);
}

/* ============================================================
   在线客服按钮
   ============================================================ */
.customer-service-btn {
  position: fixed;
  right: 20px;
  bottom: 88px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 80;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
  border: none;
  transition: all var(--duration-normal) var(--ease-out);
}

.customer-service-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.45);
}

/* 返回顶部 */
.back-top {
  position: fixed;
  right: 20px;
  bottom: 24px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  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);
}

/* ============================================================
   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: 60px;
    --section-py-sm: 40px;
  }

  .container {
    padding: 0 20px;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .hero {
    height: 82vh;
    min-height: 460px;
  }

  .header__nav,
  .header__actions {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .product-showcase {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-preview {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .review-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .list-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .list-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-detail {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .news-item__image {
    width: 140px;
    height: 100px;
  }
}

/* ============================================================
   响应式 — 移动端 (< 768px)
   ============================================================ */
@media (max-width: 767px) {
  :root {
    --section-py: 44px;
    --section-py-sm: 32px;
  }

  .container {
    padding: 0 16px;
  }

  /* 区块标题紧凑化 */
  .section-header {
    margin-bottom: 24px;
  }
  .section-title {
    font-size: 1.5rem;
  }
  .section-subtitle {
    font-size: 0.9rem;
    line-height: 1.6;
  }
  .section-tag {
    font-size: 0.64rem;
    padding: 3px 10px;
    margin-bottom: 0.55rem;
  }

  /* Hero — 降低高度，按钮并排占满 */
  .hero {
    height: 74vh;
    min-height: 420px;
    max-height: 600px;
  }

  .hero__content {
    padding-bottom: 56px;
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero__title {
    font-size: 1.85rem;
  }

  .hero__scroll {
    display: none;
  }

  .hero__actions {
    gap: 10px;
    margin-top: 22px;
  }
  .hero__actions .btn {
    flex: 1 1 0;
    min-width: 0;
    padding-left: 12px;
    padding-right: 12px;
  }

  .inner-banner {
    height: 200px;
  }
  .inner-banner__content {
    padding: 0 16px;
  }
  .inner-banner__title {
    font-size: 1.5rem;
  }
  .inner-banner__subtitle {
    font-size: 0.9rem;
  }

  /* ★ 核心产品：单列大卡 → 两列紧凑网格 */
  .product-showcase {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .card--product .card__image {
    aspect-ratio: 1 / 1;
  }
  .card--product .card__body {
    padding: 12px 12px 14px;
  }
  .card--product .card__tag {
    font-size: 0.6rem;
    padding: 2px 7px;
    margin-bottom: 5px;
  }
  .card--product .card__title {
    font-size: 0.88rem;
    line-height: 1.35;
    margin-bottom: 4px;
    -webkit-line-clamp: 2;
  }
  /* 两列下描述会撑高卡片，直接省略 */
  .card--product .card__desc {
    display: none;
  }
  /* 描述隐藏后，价格贴底对齐 */
  .card--product .card__price {
    margin-top: auto;
    padding-top: 8px;
    font-size: 0.98rem;
  }

  /* ★ 产品分类：2×2 紧凑 */
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .category-card {
    padding: 18px 12px;
  }
  .category-card__icon {
    width: 44px;
    height: 44px;
    font-size: 1.1rem;
    margin: 0 auto 10px;
    border-radius: var(--radius-sm);
  }
  .category-card__name {
    font-size: 0.9rem;
  }
  .category-card__count {
    font-size: 0.74rem;
  }

  /* 设计理念 */
  .about-preview {
    gap: 20px;
  }
  .about-preview__image {
    aspect-ratio: 16 / 10;
  }
  .about-preview__text {
    gap: 14px;
  }
  .about-preview__text p {
    font-size: 0.9rem;
    line-height: 1.75;
  }

  /* ★ 技术亮点：单列 → 2×2 卡片 */
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .feature-item {
    text-align: left;
    padding: 16px 14px 18px;
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
  }
  .feature-item__icon {
    width: 40px;
    height: 40px;
    font-size: 1rem;
    margin: 0 0 10px;
    border-radius: var(--radius-sm);
  }
  .feature-item__title {
    font-size: 0.88rem;
    margin-bottom: 4px;
  }
  .feature-item__desc {
    font-size: 0.76rem;
    line-height: 1.5;
  }

  /* ★ 真实评价：单列堆叠 → 横向滑动卡片 */
  .review-grid {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    /* 出血到屏幕边缘，暗示可滑动 */
    margin: 0 -16px;
    padding: 4px 16px 10px;
  }
  .review-grid::-webkit-scrollbar {
    display: none;
  }
  .review-card {
    flex: 0 0 76%;
    scroll-snap-align: start;
    padding: 18px 16px;
  }
  .review-card__stars {
    margin-bottom: 10px;
  }
  .review-card__text {
    font-size: 0.85rem;
    line-height: 1.65;
  }

  /* ★ 科技资讯：全宽大图 → 左缩略图列表 */
  .news-list {
    gap: 10px;
  }
  .news-item {
    flex-direction: row;
    gap: 12px;
    padding: 12px;
    align-items: stretch;
  }
  .news-item__image {
    width: 104px;
    height: 78px;
    align-self: center;
  }
  .news-item__title {
    font-size: 0.9rem;
    line-height: 1.4;
    -webkit-line-clamp: 2;
    margin-bottom: 4px;
  }
  .news-item__desc {
    font-size: 0.78rem;
    line-height: 1.5;
    -webkit-line-clamp: 2;
    margin-bottom: 6px;
  }
  .news-item__date {
    font-size: 0.72rem;
  }

  /* 通用卡片 */
  .card__body {
    padding: 16px;
  }

  .list-grid {
    grid-template-columns: 1fr;
  }
  .list-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .spec-grid {
    grid-template-columns: 1fr;
  }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  /* CTA */
  .cta-section {
    padding: 44px 0 48px;
  }
  .cta-section__subtitle {
    font-size: 0.9rem;
    margin-bottom: 22px;
  }
  .cta-actions {
    gap: 10px;
    flex-wrap: nowrap;
  }
  .cta-actions .btn {
    flex: 1 1 0;
    min-width: 0;
    padding-left: 12px;
    padding-right: 12px;
  }

  /* Footer：品牌通栏 + 2 列 */
  .footer {
    padding-top: 32px;
  }
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 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 a {
    padding: 4px 0;
  }
  .footer__contact-item {
    font-size: 0.8rem;
  }
  .footer__qrcode {
    width: 88px;
    height: 88px;
  }
  .footer__bottom {
    padding: 16px 0;
  }
  .footer__bottom-inner {
    flex-direction: column;
    text-align: center;
    gap: 8px;
    font-size: 0.76rem;
  }

  /* 表单与详情页 */
  .contact-form-wrap {
    padding: 18px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .search-result-item {
    flex-direction: column;
  }

  .search-result-item__thumb {
    width: 100%;
    height: 150px;
  }

  .article__pager {
    flex-direction: column;
    text-align: center;
  }

  .back-top {
    right: 12px;
    bottom: 16px;
  }

  .customer-service-btn {
    right: 12px;
    bottom: 68px;
    width: 44px;
    height: 44px;
    font-size: 1rem;
  }
}

/* ============================================================
   响应式 — 小屏手机 (< 375px)
   ============================================================ */
@media (max-width: 374px) {
  body { font-size: 14px; }
  .category-grid { 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;
  }
}