/* =========================================================
 * 设计变量（移动端优先）
 * 配色 / 形状语言参照 wpthemes.themehunk.com/auto-parts/shop
 *   ThemeHunk「th-shop-mania」自定义：
 *     强调色 #d60808（链接 hover / 按钮 / 购物车 / 返回顶部）
 *     正文深色 #111，浅底 #f3f3f3，描边 #ebebeb，星标金 #e5a632
 *     圆角主流 5px（偏方），字体 Instrument Sans / Roboto Condensed
 * ========================================================= */
:root {
  /* 强调色：只用于「可交互 / 需突出」的元素 */
  --c-accent: #d60808;
  --c-accent-dark: #a80606;
  --c-accent-lite: #ff5245;        /* 深色背景上的强调文字 */
  --c-accent-tint: #fdf1f1;        /* 淡红底（hover / 选中） */

  /* 结构色：深色标题 / 深色色带 / 中性灰 */
  --c-primary: #111111;
  --c-primary-dark: #000000;
  --c-ink: #111111;
  --c-ink-2: #1a1a1a;
  --c-text: #1c1c1c;
  --c-text-soft: #6b6b6b;

  --c-bg: #ffffff;
  --c-bg-alt: #f3f3f3;
  --c-border: #e3e6e8;

  --header-h: 60px;
  --container: 1140px;
  --maxw: 1140px;
  --radius: 5px;
  --shadow: 0 2px 10px rgba(17, 17, 17, .08);
  --shadow-hover: 0 12px 28px rgba(17, 17, 17, .16);
  --font-sans: "Instrument Sans", "Roboto Condensed", "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  font-size: 15px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }

/* ===================== 顶部导航 ===================== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(180%) blur(8px);
  border-top: 3px solid var(--c-accent);
  border-bottom: 1px solid var(--c-border);
}
.header-inner {
  height: var(--header-h);
  display: flex; align-items: center; gap: 12px;
}
.logo { display: flex; align-items: baseline; gap: 6px; font-weight: 800; }
.logo-cn { font-size: 20px; color: var(--c-ink); letter-spacing: 1px; }
.logo-en { font-size: 12px; color: var(--c-accent); letter-spacing: 1.2px; font-weight: 700; }
/* 非中文语言下品牌名已本地化，隐藏红色英文副标避免重复 */
html:not(:lang(zh-CN)) .logo-en { display: none; }

.main-nav { margin-left: auto; }
.main-nav ul { display: flex; gap: 2px; list-style: none; margin: 0; padding: 0; }
/* 参考站菜单样式：常态深色，hover / 当前页为强调红 + 底部下划线展开 */
.main-nav a {
  position: relative; display: block; padding: 8px 14px; border-radius: var(--radius);
  font-size: 15px; font-weight: 600; color: var(--c-text); transition: color .2s, background .2s;
}
.main-nav a::after {
  content: ""; position: absolute; left: 10px; right: 10px; bottom: 2px; height: 2px;
  background: var(--c-accent); transform: scaleX(0); transform-origin: left center;
  transition: transform .25s ease;
}
.main-nav a:hover, .main-nav a.active { color: var(--c-accent); background: transparent; }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }

/* 汉堡 */
.nav-toggle {
  display: none; margin-left: auto; width: 42px; height: 42px;
  border: 0; background: transparent; cursor: pointer; padding: 10px;
}
.nav-toggle span {
  display: block; height: 2px; background: var(--c-ink); border-radius: 0;
  transition: .25s;
}
.nav-toggle span + span { margin-top: 5px; }

/* 语言切换（右上角，仿 zsqcck） */
.lang-switch { position: relative; margin-left: 8px; }
.lang-btn {
  display: flex; align-items: center; gap: 6px;
  height: 36px; padding: 0 10px; cursor: pointer;
  border: 1px solid var(--c-border); border-radius: var(--radius);
  background: #fff; color: var(--c-text); font-size: 14px; transition: .2s;
}
.lang-btn:hover { border-color: var(--c-accent); color: var(--c-accent); }
.lang-btn .globe { font-size: 15px; }
.lang-btn .caret { font-size: 11px; color: var(--c-text-soft); }
/* 3 列滚动式多语面板（仿参考站 zsqcck）
   关键：列宽用 max-content（而非 1fr），否则列会塌缩导致文字/国旗互相重叠 */
.lang-menu {
  position: absolute; right: 0; top: 44px;
  display: grid; grid-template-columns: repeat(3, max-content);
  gap: 2px 4px; width: max-content; max-width: calc(100vw - 16px);
  max-height: min(70vh, 460px); overflow-y: auto; -webkit-overflow-scrolling: touch;
  list-style: none; margin: 0; padding: 6px;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  box-shadow: var(--shadow-hover); opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: .2s; z-index: 120;
  scrollbar-width: thin; scrollbar-color: var(--c-border) transparent;
}
.lang-switch.open .lang-menu { opacity: 1; visibility: visible; transform: none; }
.lang-menu li {
  display: flex; align-items: center; gap: 7px;
  padding: 7px 10px; border-radius: var(--radius); cursor: pointer; font-size: 13px;
  white-space: nowrap; user-select: none;
}
.lang-menu li:hover { background: var(--c-accent-tint); color: var(--c-accent); }
.lang-menu li.active { color: #fff; background: var(--c-accent); }
.lang-menu li .flag {
  width: 21px; height: 16px; border-radius: 2px; object-fit: cover; flex: 0 0 auto;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .06);
}
/* 按钮当前语言的小国旗 */
.lang-flag {
  width: 21px; height: 16px; border-radius: 2px; object-fit: cover; flex: 0 0 auto;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .06);
}
/* 滚动条美化（WebKit） */
.lang-menu::-webkit-scrollbar { width: 8px; }
.lang-menu::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 8px; }
.lang-menu::-webkit-scrollbar-track { background: transparent; }
/* 窄屏降为 2 列，避免长语言名溢出视口 */
@media (max-width: 480px) {
  .lang-menu { grid-template-columns: repeat(2, max-content); }
}

/* ===================== HERO 轮播 ===================== */
.hero { position: relative; height: 78vh; min-height: 420px; overflow: hidden; color: #fff; }
.slides { position: absolute; inset: 0; }
.slide {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: 0; transform: scale(1.06); transition: opacity .8s, transform 6s linear;
}
.slide.active { opacity: 1; transform: scale(1); }
/* 封面仅保留底部一段极淡渐变（最深 8%）：上方 70% 完全保留原图亮度，
   只在接近下方深色数据条处轻微收敛，弱化明暗硬切 */
.hero-mask {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, rgba(17, 17, 17, 0) 0%, rgba(17, 17, 17, 0) 70%, rgba(17, 17, 17, .08) 100%);
}
.hero-content { position: relative; z-index: 2; height: 100%; display: flex; flex-direction: column;
  justify-content: center; align-items: flex-start; max-width: 760px; }
.hero-eyebrow {
  letter-spacing: 3px; font-size: 13px; font-weight: 700; margin: 0 0 10px;
  color: var(--c-accent-lite); text-transform: uppercase;
}
.hero-title { font-size: clamp(26px, 6vw, 52px); margin: 0 0 14px; font-weight: 800; line-height: 1.2; letter-spacing: -.5px; }
.hero-sub { font-size: clamp(14px, 2.4vw, 18px); max-width: 620px; margin: 0 0 24px; opacity: .95; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 26px; border-radius: var(--radius); font-size: 15px;
  font-weight: 600; cursor: pointer; transition: .2s; border: 2px solid transparent;
}
.btn-primary { background: var(--c-accent); color: #fff; }
.btn-primary:hover { background: var(--c-accent-dark); }
.btn-ghost { border-color: #fff; color: #fff; }
.btn-ghost:hover { background: var(--c-accent); border-color: var(--c-accent); }
.hero-dots { position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%); z-index: 3;
  display: flex; gap: 8px; }
/* 去掉深色遮罩后，浅灰产品图上的指示点改用深色半透明，保持可辨识 */
.hero-dots i { width: 10px; height: 10px; border-radius: 50%; background: rgba(17, 17, 17, .4); cursor: pointer; }
.hero-dots i.active { background: var(--c-accent); width: 26px; border-radius: var(--radius); }

/* ===================== 数据条（深色工业色带） ===================== */
.stats { background: var(--c-ink-2); color: #fff; border-top: 3px solid var(--c-accent); }
.stats-inner { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; padding: 26px 16px; text-align: center; }
.stat b { display: block; font-size: 28px; font-weight: 800; letter-spacing: -.5px; }
.stat b small { font-size: 14px; font-weight: 600; margin-left: 3px; }
.stat > span { font-size: 13px; color: #b9b9b9; }
.stat b > span { font-size: inherit; font-weight: inherit; color: inherit; }

/* ===================== 通用区块 ===================== */
.section { padding: 56px 0; }
.section-alt { background: var(--c-bg-alt); }
.section-head { text-align: center; margin-bottom: 34px; }
.eyebrow {
  color: var(--c-accent); letter-spacing: 3px; font-size: 13px; font-weight: 700;
  margin: 0 0 6px; text-transform: uppercase;
}
/* 标题下方的短红线（工业风分隔） */
.section-head h2 { position: relative; font-size: clamp(24px, 4vw, 34px); margin: 0; padding-bottom: 14px; letter-spacing: -.5px; }
.section-head h2::after {
  content: ""; position: absolute; left: 50%; bottom: 0; width: 56px; height: 3px;
  transform: translateX(-50%); background: var(--c-accent);
}
.section-sub { color: var(--c-text-soft); margin: 10px 0 0; }

/* 关于我们（仅保留公司简介，单列居中式排版） */
.about-grid { max-width: 900px; margin: 0 auto; }
.about-text p { margin: 0; color: var(--c-text-soft); text-align: justify; font-size: 15px; line-height: 1.9; }

/* 产品 */
.product-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
.product-card { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); transition: transform .25s, box-shadow .25s, border-color .25s; }
.product-card:hover { transform: translateY(-6px); border-color: var(--c-accent); box-shadow: var(--shadow-hover); }
.product-thumb { aspect-ratio: 4 / 3; background: var(--c-bg-alt); overflow: hidden; }
.product-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.product-card:hover .product-thumb img { transform: scale(1.05); }
.product-card h3 { margin: 16px 16px 6px; font-size: 18px; color: var(--c-ink); }
.product-card p { margin: 0 16px 18px; color: var(--c-text-soft); font-size: 14px; }

/* 联系我们（地图已移除，信息卡单列居中） */
.contact-grid { max-width: 720px; margin: 0 auto; }
.contact-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.contact-list li { display: flex; gap: 12px; align-items: flex-start;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 14px 16px;
  transition: border-color .2s, box-shadow .2s; }
.contact-list li:hover { border-color: var(--c-accent); box-shadow: var(--shadow); }
.contact-list .ic { font-size: 20px; line-height: 1.4; }
.contact-list b { display: block; color: var(--c-ink); }
.contact-list p { margin: 2px 0 0; color: var(--c-text-soft); }
.contact-list p.wa-lines { line-height: 1.8; }
.contact-list a:hover { color: var(--c-accent); }

/* 页脚 */
.site-footer { background: var(--c-ink-2); color: #a9a9a9; padding: 26px 0; text-align: center; }
.footer-inner p { margin: 0; font-size: 13px; }
.footer-inner .footer-copy { font-size: 14px; color: #b9b9b9; margin: 0 0 6px; }
.footer-sub { color: #7a7a7a !important; margin-top: 4px !important; }

/* 返回顶部（参考站为强调色方块） */
.back-top {
  position: fixed; right: 16px; bottom: 18px; width: 44px; height: 44px; border-radius: var(--radius);
  border: 0; background: var(--c-accent); color: #fff; font-size: 20px; cursor: pointer;
  box-shadow: var(--shadow-hover); opacity: 0; visibility: hidden; transition: .25s; z-index: 90;
}
.back-top:hover { background: var(--c-accent-dark); }
.back-top.show { opacity: 1; visibility: visible; }

/* ===================== 滚动出现动画 ===================== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s, transform .6s; }
.reveal.in { opacity: 1; transform: none; }

/* ===================== 响应式断点 ===================== */
@media (min-width: 768px) {
  .stats-inner { grid-template-columns: repeat(4, 1fr); }
  .stats-inner > .stat + .stat { border-left: 1px solid rgba(255, 255, 255, .12); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .section { padding: 80px 0; }
}

/* ===================== 移动端：汉堡菜单展开 ===================== */
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--c-border);
    margin: 0; max-height: 0; overflow: hidden; transition: max-height .3s ease;
    box-shadow: var(--shadow);
  }
  .main-nav.open { max-height: 320px; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 6px 12px 12px; }
  .main-nav a { padding: 14px 12px; border-radius: var(--radius); }
  /* 移动端菜单改为左侧红色竖条，比下划线更易读 */
  .main-nav a::after { left: 0; right: auto; bottom: 4px; top: 4px; width: 3px; height: auto; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  /* 移动端语言切换与 logo 同行，汉堡右移 */
  .lang-switch { margin-left: auto; }
  .header-inner { gap: 8px; }
}
@media (max-width: 420px) {
  .logo-en { display: none; }
  .lang-btn span:not(.globe):not(.caret) { font-size: 13px; }
}

/* =========================================================
 * 多页站点样式
 *   1. 内页头部横幅（页面标题 + 面包屑）
 *   2. 产品中心分类选择器（仿 product.tzyy.com.cn 三栏结构）
 *   3. CTA 区块 / 更多链接
 * ========================================================= */

/* ---------- 1. 内页横幅（深色工业风） ---------- */
.page-banner {
  position: relative; color: #fff; padding: 42px 0 34px;
  background: linear-gradient(120deg, #0f0f0f 0%, #1c1c1c 55%, #2b2b2b 100%);
}
.page-banner::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(520px 200px at 88% 20%, rgba(255, 255, 255, .10), transparent 70%);
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 {
  margin: 0 0 10px; font-size: clamp(22px, 4vw, 34px); font-weight: 800; letter-spacing: -.5px;
  border-left: 4px solid var(--c-accent); padding-left: 14px; line-height: 1.25;
}
.page-banner p { margin: 0; max-width: 780px; font-size: 14px; color: #cfcfcf; }
.page-crumb { margin-top: 14px; font-size: 13px; color: #b9b9b9; }
.page-crumb a:hover { color: var(--c-accent-lite); text-decoration: underline; }
.page-crumb i { margin: 0 7px; font-style: normal; opacity: .6; }

/* ---------- 2. 产品分类选择器 ---------- */
.pc-picker {
  background: #fff; border: 1px solid var(--c-border);
  border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
}
.pc-cols { display: grid; grid-template-columns: 1fr; }
.pc-rail, .pc-series-col { min-width: 0; }
.pc-col-head {
  padding: 11px 16px; font-size: 13px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  background: var(--c-ink-2); color: #fff;
}
.pc-series-col .pc-col-head { background: var(--c-bg-alt); color: var(--c-ink); border-bottom: 1px solid var(--c-border); }
.pc-rail-list, .pc-series-list { list-style: none; margin: 0; padding: 0; }

/* 大类：移动端为横向滚动标签 */
.pc-rail-list { display: flex; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.pc-rail-list li {
  display: flex; align-items: center; gap: 7px; flex: 0 0 auto; cursor: pointer;
  padding: 12px 14px; font-size: 14px; white-space: nowrap;
  border-right: 1px solid var(--c-border); transition: .18s;
}
.pc-rail-list li:last-child { border-right: 0; }
.pc-rail-list li:hover { background: var(--c-accent-tint); color: var(--c-accent); }
.pc-rail-list li.active { background: var(--c-accent); color: #fff; }
.pc-rail-list .pc-ic { font-size: 16px; }
.pc-rail-list .pc-name { flex: 1 1 auto; min-width: 0; }
.pc-rail-list .pc-arrow { display: none; }

/* 系列：移动端为胶囊标签 */
.pc-series-list { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px; }
.pc-series-list li {
  display: flex; align-items: center; gap: 7px; cursor: pointer;
  padding: 7px 14px; font-size: 13px; color: var(--c-text-soft);
  border: 1px solid var(--c-border); border-radius: var(--radius); transition: .18s;
}
.pc-series-list li:hover { border-color: var(--c-accent); color: var(--c-accent); }
.pc-series-list li.active {
  background: var(--c-accent-tint); border-color: var(--c-accent);
  color: var(--c-accent); font-weight: 700;
}
.pc-series-list .pc-dot {
  width: 6px; height: 6px; border-radius: 50%; flex: 0 0 auto;
  background: currentColor; opacity: .45;
}
.pc-series-list li.active .pc-dot { opacity: 1; }

/* 详情区 */
.pc-detail { padding: 16px; display: flex; flex-direction: column; gap: 16px; }
.pc-detail-media { border: 1px solid var(--c-border); border-radius: var(--radius); overflow: hidden; background: var(--c-bg-alt); }
.pc-detail-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.pc-detail-crumb { margin: 0; font-size: 12px; color: var(--c-text-soft); letter-spacing: .5px; }
.pc-detail-title { margin: 6px 0 8px; font-size: 21px; color: var(--c-ink); letter-spacing: -.3px; }
.pc-detail-desc { margin: 0 0 18px; font-size: 14px; color: var(--c-text-soft); }
.pc-detail-btn { padding: 10px 24px; }

/* 桌面端：左 大类 / 中 系列 / 右 展示（与参考站一致） */
@media (min-width: 900px) {
  .pc-cols { grid-template-columns: 250px 240px minmax(0, 1fr); }
  .pc-rail, .pc-series-col { border-right: 1px solid var(--c-border); }
  .pc-rail-list { display: block; overflow: visible; }
  .pc-rail-list li {
    border-right: 0; border-bottom: 1px solid var(--c-border); padding: 14px 16px; font-size: 15px;
  }
  .pc-rail-list li:last-child { border-bottom: 0; }
  .pc-rail-list .pc-arrow { display: block; margin-left: auto; font-size: 18px; opacity: 0; transition: .18s; }
  .pc-rail-list li.active .pc-arrow, .pc-rail-list li:hover .pc-arrow { opacity: 1; }
  .pc-series-list { display: block; padding: 0; }
  .pc-series-list li {
    border: 0; border-bottom: 1px solid var(--c-border); border-radius: 0;
    padding: 12px 16px; font-size: 14px;
  }
  .pc-series-list li:last-child { border-bottom: 0; }
  .pc-detail { flex-direction: row; align-items: center; gap: 26px; padding: 22px; }
  .pc-detail-media { flex: 0 0 44%; max-width: 400px; }
  .pc-detail-body { flex: 1 1 auto; min-width: 0; }
}

/* ---------- 3. CTA 区块 / 更多链接 ---------- */
.cta-band {
  background: linear-gradient(120deg, #0f0f0f 0%, #1c1c1c 60%, #2b2b2b 100%);
  color: #fff; border-radius: var(--radius); padding: 34px 24px; text-align: center;
}
.cta-band h2 { margin: 0 0 10px; font-size: clamp(20px, 3.4vw, 28px); letter-spacing: -.5px; }
.cta-band p { margin: 0 auto 20px; max-width: 660px; color: #cfcfcf; font-size: 14px; }
.cta-band .btn-primary { background: var(--c-accent); }
.cta-band .btn-primary:hover { background: var(--c-accent-dark); }

.section-more { text-align: center; margin-top: 30px; }
.section-more a {
  color: var(--c-accent); font-weight: 600; font-size: 15px;
  border-bottom: 2px solid transparent; padding-bottom: 2px; transition: .2s;
}
.section-more a:hover { border-color: var(--c-accent); }

/* 卡片整体可点击（首页业务领域 → 产品中心） */
a.product-card { display: block; color: inherit; }
.product-card .more { display: inline-block; margin: 0 16px 18px; font-size: 13px; color: var(--c-accent); font-weight: 600; }
.product-card h3 { margin-bottom: 8px; }

/* 分类选择器下方的操作提示 */
.pc-hint { margin: 14px 0 0; text-align: center; font-size: 13px; color: var(--c-text-soft); }

/* 页脚快捷导航 */
.footer-nav { display: flex; justify-content: center; flex-wrap: wrap; gap: 6px 20px; margin-bottom: 16px; }
.footer-nav a { font-size: 13px; color: #cfcfcf; transition: .2s; }
.footer-nav a:hover { color: var(--c-accent-lite); text-decoration: underline; }

/* =========================================================
 * 产品中心 · 全部产品缩略图网格 + 大图浮层
 * 覆盖旧三栏布局：左栏大类 / 右栏网格（型号名保留原文，不参与翻译）
 * ========================================================= */
.pc-main { min-width: 0; background: #fff; }
.pc-main-head {
  display: flex; align-items: center; flex-wrap: wrap; gap: 10px;
  padding: 12px 18px; border-bottom: 1px solid var(--c-border);
}
.pc-main-title { margin: 0; font-size: 18px; color: var(--c-ink); }
.pc-search {
  margin-left: auto; display: flex; align-items: center; gap: 6px;
  border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 5px 9px; background: #fff;
}
.pc-search:focus-within { border-color: var(--c-accent); }
.pc-search-ic { font-size: 13px; line-height: 1; opacity: .6; }
.pc-search input {
  width: 150px; border: 0; outline: 0; background: transparent;
  font: inherit; font-size: 13px; color: var(--c-ink);
}
/* 产品按型号顺序依次横向排列：每行 4 个，排满自动换行，无横向滚动 */
.pc-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px; padding: 18px;
}
.pc-card {
  display: block; padding: 0; text-align: left; cursor: pointer;
  border: 1px solid var(--c-border); border-radius: var(--radius);
  background: #fff; overflow: hidden; transition: .18s;
}
.pc-card:hover, .pc-card:focus-visible {
  border-color: var(--c-accent); transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, .09); outline: none;
}
.pc-card-media {
  display: block; aspect-ratio: 4 / 3; overflow: hidden;
  background: var(--c-bg-alt);
}
.pc-card-media img { display: block; width: 100%; height: 100%; object-fit: contain; }
.pc-card-name {
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
  overflow: hidden; min-height: 4.2em; padding: 9px 10px;
  font-size: 13px; line-height: 1.4; color: var(--c-ink);
}
.pc-empty {
  grid-column: 1 / -1; margin: 0; padding: 40px 0;
  text-align: center; font-size: 20px; color: var(--c-text-soft);
}

/* 大图浮层 */
.pc-lightbox {
  position: fixed; inset: 0; z-index: 9999; display: none;
  align-items: center; justify-content: center; padding: 24px;
  background: rgba(12, 12, 12, .82);
}
.pc-lightbox.open { display: flex; }
.pc-lb-inner {
  position: relative; width: 100%; max-width: 900px; max-height: 90vh;
  overflow: auto; background: #fff; border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .4);
}
.pc-lb-media {
  display: flex; align-items: center; justify-content: center;
  padding: 12px; background: #f3f3f3;
}
.pc-lb-media img { display: block; max-width: 100%; max-height: 58vh; object-fit: contain; }
.pc-lb-body { padding: 16px 22px 22px; }
.pc-lb-cat { margin: 0 0 4px; font-size: 12px; color: var(--c-text-soft); }
.pc-lb-name { margin: 0 0 16px; font-size: 20px; color: var(--c-ink); }
.pc-lb-close {
  position: absolute; top: 10px; right: 12px; z-index: 2;
  width: 34px; height: 34px; border: 0; border-radius: 50%;
  background: rgba(0, 0, 0, .55); color: #fff;
  font-size: 24px; line-height: 1; cursor: pointer;
}
.pc-lb-nav {
  position: absolute; top: 26%; z-index: 2;
  width: 40px; height: 56px; border: 0;
  background: rgba(0, 0, 0, .45); color: #fff;
  font-size: 30px; line-height: 1; cursor: pointer;
}
.pc-lb-prev { left: 0; border-radius: 0 6px 6px 0; }
.pc-lb-next { right: 0; border-radius: 6px 0 0 6px; }

@media (min-width: 600px) {
  .pc-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 900px) {
  /* 覆盖原三栏（250px 240px 1fr）为两栏：左分类 / 右 4 列产品网格 */
  .pc-cols { grid-template-columns: 250px minmax(0, 1fr); }
  .pc-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .pc-search input { width: 110px; }
  .pc-lb-nav { width: 32px; height: 46px; font-size: 24px; }
}


/* ===================== 制造与检测能力（关于我们） ===================== */
.eq-group + .eq-group { margin-top: 38px; }
.eq-group-title {
  display: flex; align-items: center; gap: 10px;
  margin: 0 0 16px; font-size: 19px; color: var(--c-ink);
}
.eq-group-title::before {
  content: ""; width: 4px; height: 18px; border-radius: 2px;
  background: var(--c-accent); flex: 0 0 auto;
}
.eq-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.eq-card {
  display: block; padding: 0; text-align: left; cursor: pointer;
  border: 1px solid var(--c-border); border-radius: var(--radius);
  background: #fff; overflow: hidden; transition: .18s; font: inherit;
}
.eq-card:hover, .eq-card:focus-visible {
  border-color: var(--c-accent); transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, .09); outline: none;
}
.eq-card-media {
  display: block; aspect-ratio: 4 / 3; overflow: hidden;
  background: var(--c-bg-alt);
}
.eq-card-media img { display: block; width: 100%; height: 100%; object-fit: contain; }
.eq-card-name {
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; min-height: 2.8em; padding: 9px 10px;
  font-size: 13px; line-height: 1.4; color: var(--c-ink);
}
@media (min-width: 600px) { .eq-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 900px) { .eq-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }