/* ==========================================================================
   LCCMIC 深圳立芯科技有限公司 · 官网样式系统
   设计参考：江苏捷捷微电（器件大类 / 数据背书 / 质量体系）+ 乐山无线电 LRC（产品矩阵 / 行业应用）
   主色：深蓝 #00499d（结构色）　品牌色：珊瑚红（取自 LCCMIC 品牌标识）　辅助：科技青 #12a5dc
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 主色阶（深蓝，取自捷捷微电） */
  --blue-900: #001b3d;
  --blue-800: #002f65;
  --blue-700: #003c80;
  --blue-600: #00499d;
  --blue-500: #0a5cb8;
  --blue-400: #2d7ad1;
  --blue-100: #e3eefa;
  --blue-50: #f2f7fd;

  /* 品牌色阶（珊瑚红，取自 LCCMIC 品牌标识的红色渐变）
     标识原始珊瑚红为 #e03e2e，它在白底上只有 4.29:1，达不到 WCAG AA 正文标准（4.5:1），
     因此文字/按钮等「承载信息」的场景统一用加深一档的 --red-500（白底 4.92:1）。
     --brand-coral 是标识原色的规范参考值；实际装饰位置（按钮辉光 .btn-accent、
     首屏光晕、标题下划线、.stat-card.accent 底色）写的是等价的 rgba(224, 62, 46, …) 字面量，
     因为相对颜色语法 rgb(from …) 对老浏览器不安全。下面这张表是唯一事实来源：
       .btn-accent box-shadow     rgba(224, 62, 46, .30)   → .btn-accent
       首屏 radial 光晕            rgba(224, 62, 46, .30/.07/.32)
       标题下划线渐变              rgba(224, 62, 46, .58)
       统计卡强调底                rgba(224, 62, 46, .18/.40)
     改 --brand-coral 时必须同步改上面 4 处，_contrast.py 会校验两者是否漂移。 */
  --brand-coral: #e03e2e;
  --red-700: #8f1f0e;
  --red-600: #b82c1d;   /* hover / 深压：白底 6.15:1，红底白字 6.15:1 */
  --red-500: #d2351f;   /* 主色：按钮底、价格、强调，白底 4.92:1 / 白字其上 4.92:1 */
  --red-400: #f58570;   /* 深色区块上的强调，blue-800 上 5.31:1 */
  --red-100: #fdece8;

  /* 辅助：科技青 */
  --cyan-500: #12a5dc;
  --cyan-100: #e2f6fd;

  /* 中性 */
  --ink-900: #101a26;
  --ink-700: #2b3a4a;
  --ink-500: #5b6b7d;
  --ink-400: #647386;   /* 小字号辅助文字：白底 4.84:1 / 浅灰底 4.54:1，满足 WCAG AA */
  --ink-200: #d7dee7;
  --ink-100: #eaeff5;
  --ink-50: #f5f8fb;
  --white: #ffffff;

  /* 功能色 */
  --ok: #12a45a;
  --warn: #d98600;

  /* 排版 */
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-num: "DIN Alternate", "Bahnschrift", "Segoe UI", var(--font-sans);

  /* 圆角：工业风，克制 */
  --r-sm: 3px;
  --r-md: 6px;
  --r-lg: 10px;

  /* 阴影 */
  --sh-1: 0 1px 2px rgba(16, 26, 38, .06), 0 1px 3px rgba(16, 26, 38, .04);
  --sh-2: 0 4px 14px rgba(16, 26, 38, .08);
  --sh-3: 0 12px 32px rgba(0, 47, 101, .14);

  /* 布局 */
  --wrap: 1280px;
  --wrap-narrow: 1000px;
  --hdr-h: 74px;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--hdr-h) + 20px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 便于复用：只有定位元素才吃 z-index */
body.nav-open { overflow: hidden; }

img, svg, video { max-width: 100%; height: auto; display: block; }

/* 内联图标兜底尺寸。
   没有 width/height 属性的 <svg> 会按替换元素默认尺寸（300×150）参与布局，
   在窄容器（如产品中心左侧目录）里会被撑成一个大方块，把文字挤到一列一字。
   这里统一按 1em 处理；具体组件的尺寸（.btn svg、.caret、.empty-state svg 等）
   选择器权重更高，仍会正常生效。 */
svg:where(:not([width]):not([height])) { width: 1em; height: 1em; }
a { color: var(--blue-600); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--blue-500); }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }

h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; color: var(--ink-900); line-height: 1.3; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

/* 键盘可达性：保留可见焦点环 */
:focus-visible {
  outline: 3px solid var(--blue-400);   /* 白底 4.36:1 / 深蓝底 3.93:1，两种底色都可见 */
  outline-offset: 2px;
  border-radius: 2px;
}

/* 跳转到主内容（屏幕阅读器/键盘） */
.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 200;
  background: var(--blue-600); color: #fff; padding: 10px 18px;
  border-radius: var(--r-md); font-weight: 600;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; color: #fff; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- 3. 栅格与容器 ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: var(--wrap-narrow); }
.section { padding: 84px 0; }
.section-sm { padding: 56px 0; }
.section-tint { background: var(--ink-50); }
.section-navy {
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-800) 48%, #51221f 100%);
  color: rgba(255, 255, 255, .82);
}
.section-navy h2, .section-navy h3 { color: #fff; }

/* ---------- 4. 标题组件 ---------- */
.sec-head { max-width: 720px; margin-bottom: 44px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font: 700 12px/1 var(--font-num); letter-spacing: .16em; text-transform: uppercase;
  color: var(--blue-600); margin-bottom: 14px;
}
.sec-head .eyebrow::before {
  content: ""; width: 22px; height: 2px; background: var(--red-500); display: inline-block;
}
.sec-head.center .eyebrow::after {
  content: ""; width: 22px; height: 2px; background: var(--red-500); display: inline-block;
}
.sec-head h2 { font-size: 34px; letter-spacing: -.01em; margin-bottom: 14px; }
.sec-head p { color: var(--ink-500); font-size: 15px; margin: 0; }
.section-navy .sec-head p { color: rgba(255, 255, 255, .66); }
.section-navy .sec-head .eyebrow { color: var(--red-400); }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: var(--r-md);
  font-weight: 600; font-size: 15px; line-height: 1;
  transition: all .22s var(--ease); border: 1px solid transparent;
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; flex: none; }
.btn-primary { background: var(--blue-600); color: #fff; box-shadow: 0 4px 14px rgba(0, 73, 157, .28); }
.btn-primary:hover { background: var(--blue-500); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 22px rgba(0, 73, 157, .34); }
.btn-accent { background: var(--red-500); color: #fff; box-shadow: 0 4px 14px rgba(224, 62, 46, .30); }
.btn-accent:hover { background: var(--red-600); color: #fff; transform: translateY(-2px); }
.btn-ghost { border-color: var(--ink-200); color: var(--ink-700); background: #fff; }
.btn-ghost:hover { border-color: var(--blue-600); color: var(--blue-600); }
.btn-ghost-light { border-color: rgba(255, 255, 255, .38); color: #fff; }
.btn-ghost-light:hover { background: rgba(255, 255, 255, .12); border-color: #fff; color: #fff; }
/* 小按钮：真实触控目标高度按 40px 保证（旧值 9px 内边距只有 34px，
   虽然满足 WCAG 2.2 SC 2.5.8 的 24×24 下限，但明显低于 40/44px 的
   舒适触控区间，移动端密集排布时容易误触，这里直接抬高到 40px） */
.btn-sm { padding: 12px 18px; font-size: 14px; min-height: 40px; }
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-block { width: 100%; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 6px;
  font-weight: 600; font-size: 14px; color: var(--blue-600);
}
.link-arrow svg { width: 14px; height: 14px; transition: transform .22s var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- 6. 顶部信息条 ---------- */
.topbar {
  background: var(--blue-900); color: rgba(255, 255, 255, .68);
  font-size: 13px; line-height: 1;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 40px; }
.topbar-left { display: flex; align-items: center; gap: 22px; }
.topbar-item { display: inline-flex; align-items: center; gap: 6px; }
.topbar-item svg { width: 14px; height: 14px; opacity: .8; }
.topbar a { color: rgba(255, 255, 255, .68); }
.topbar a:hover { color: #fff; }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.lang-switch { display: inline-flex; align-items: center; gap: 6px; padding-left: 16px; border-left: 1px solid rgba(255, 255, 255, .14); }
.lang-switch .on { color: #fff; font-weight: 600; }

/* ---------- 7. 主导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--ink-100);
  transition: box-shadow .25s var(--ease);
}
.site-header.is-stuck { box-shadow: 0 6px 24px rgba(16, 26, 38, .09); }

.nav-row { display: flex; align-items: center; gap: clamp(14px, 1.5vw, 28px); height: var(--hdr-h); }
.brand { display: flex; align-items: center; gap: 11px; flex: none; }
.brand img { height: 30px; width: auto; }
.brand .brand-cn {
  font-size: 14px; font-weight: 700; color: var(--ink-900);
  padding-left: 11px; border-left: 1px solid var(--ink-200); line-height: 1.25;
  letter-spacing: .02em; white-space: nowrap;
}
.brand:hover .brand-cn { color: var(--blue-600); }

/* 一级导航：整条必须单行排布。
   flex-shrink 默认 1，中文又允许逐字断行，一旦容器宽度不足，
   每个 li 会被压到「一个字」宽 -> 栏目逐字换行、导航条变得很高。
   所以这里禁止收缩 + 禁止换行，并让字号/内边距随视口流式收缩；
   宽度不足 1080px 时由抽屉菜单接管（见第 23 节响应式）。 */
.mainnav { display: flex; align-items: center; gap: 2px; margin-left: 6px; flex: 0 1 auto; }
.mainnav > li { position: relative; flex: 0 0 auto; }
.mainnav > li > a {
  display: flex; align-items: center; gap: 5px; white-space: nowrap;
  padding: 0 clamp(7px, .8vw, 12px); height: var(--hdr-h);
  font-size: clamp(13px, .9vw, 15px); font-weight: 600; color: var(--ink-900);
  position: relative;
}
.mainnav > li > a::after {
  content: ""; position: absolute; left: 15px; right: 15px; bottom: 0; height: 3px;
  background: var(--blue-600); transform: scaleX(0); transform-origin: center;
  transition: transform .24s var(--ease);
}
.mainnav > li > a:hover, .mainnav > li.active > a { color: var(--blue-600); }
.mainnav > li > a:hover::after, .mainnav > li.active > a::after { transform: scaleX(1); }
.mainnav .caret { width: 11px; height: 11px; opacity: .5; transition: transform .24s var(--ease); }
.mainnav > li:hover .caret { transform: rotate(180deg); }

/* 大屏悬浮面板：产品中心 */
.mega {
  position: absolute; top: 100%; left: -20px;
  width: 720px; padding: 26px;
  background: #fff; border: 1px solid var(--ink-100);
  border-radius: 0 0 var(--r-lg) var(--r-lg);
  box-shadow: var(--sh-3);
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px 26px;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all .24s var(--ease);
}
.mainnav > li:hover .mega,
.mainnav > li:focus-within .mega { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-group h4 {
  font-size: 12px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-400); font-weight: 700; margin: 14px 0 8px;
}
.mega-group:first-child h4 { margin-top: 0; }
.mega-links { display: flex; flex-wrap: wrap; gap: 4px 0; flex-direction: column; }
.mega-links a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 7px 12px; border-radius: var(--r-sm);
  font-size: 14px; color: var(--ink-700);
}
.mega-links a span { font: 600 12px/1 var(--font-num); color: var(--ink-400); }
.mega-links a:hover { background: var(--blue-50); color: var(--blue-600); }

.nav-tools { display: flex; align-items: center; gap: 12px; margin-left: auto; flex: none; }
.btn-search {
  display: inline-flex; align-items: center; gap: 8px;
  height: 40px; padding: 0 16px; border-radius: var(--r-md);
  background: var(--ink-50); border: 1px solid var(--ink-100);
  color: var(--ink-500); font-size: 14px; white-space: nowrap;
  transition: all .2s var(--ease); min-width: 190px;
}
.btn-search:hover { border-color: var(--blue-400); color: var(--blue-600); background: #fff; }
.btn-search svg { width: 15px; height: 15px; }
.btn-search kbd {
  margin-left: auto; font: 600 11px/1 var(--font-num);
  background: #fff; border: 1px solid var(--ink-200); border-radius: 3px;
  padding: 3px 5px; color: var(--ink-400);
}
.nav-toggle { display: none; width: 42px; height: 42px; align-items: center; justify-content: center; border-radius: var(--r-md); }
.nav-toggle svg { width: 22px; height: 22px; }
.nav-toggle:hover { background: var(--ink-50); }

/* ---------- 8. 首页 Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  min-height: 560px;
  background: linear-gradient(115deg, #001127 0%, var(--blue-900) 32%, #002f6b 66%, #6e1c15 100%);
  color: #fff;
  display: flex; align-items: center;
  padding: 78px 0 90px;
}
.hero::before {
  /* 电路纹理 */
  content: ""; position: absolute; top: 0; right: 0; bottom: 0; left: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 80% at 72% 42%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 72% 42%, #000 30%, transparent 78%);
}
.hero::after {
  content: ""; position: absolute; right: -140px; top: 50%; transform: translateY(-50%);
  width: 720px; height: 720px; border-radius: 50%;
  background: radial-gradient(circle, rgba(224, 62, 46, .30) 0%, rgba(224, 62, 46, .07) 45%, transparent 70%);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: 56px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 15px 7px 8px; border-radius: 100px;
  background: rgba(255, 255, 255, .09);
  border: 1px solid rgba(255, 255, 255, .16);
  font-size: 13px; color: rgba(255, 255, 255, .9); margin-bottom: 24px;
}
.hero-badge b {
  background: var(--red-500); color: #fff; font-weight: 700;
  padding: 3px 9px; border-radius: 100px; font-size: 12px; line-height: 1.5;
}
.hero h1 {
  color: #fff; font-size: 50px; line-height: 1.18;
  letter-spacing: -.02em; margin-bottom: 22px;
}
.hero h1 .hl {
  background: linear-gradient(180deg, transparent 62%, rgba(224, 62, 46, .58) 62%);
  padding: 0 .06em;
}
/* 英文主标题「Analog & mixed-signal ICs,」在 50px 下实测 685px，
   而首屏左栏只有 635px —— 会把 "ICs," 挤成孤零零一行。收一号即可一行放下。 */
.hero h1.en-h1 { font-size: 45px; }
.hero-sub {
  font-size: 17px; line-height: 1.85; color: rgba(255, 255, 255, .76);
  max-width: 560px; margin-bottom: 34px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-tags span {
  font-size: 13px; color: rgba(255, 255, 255, .62);
  padding-left: 18px; position: relative;
}
.hero-tags span::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 6px; height: 6px; border-radius: 50%; background: var(--red-400);
}

/* Hero 右侧：数据卡 */
.hero-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
}
.stat-card {
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: var(--r-lg); padding: 22px 22px 20px;
  backdrop-filter: blur(6px);
  transition: all .26s var(--ease);
}
.stat-card:hover { background: rgba(255, 255, 255, .12); transform: translateY(-3px); }
.stat-card .num {
  font: 700 34px/1 var(--font-num); color: #fff; letter-spacing: -.01em;
  display: flex; align-items: baseline; gap: 3px; margin-bottom: 8px;
}
.stat-card .num small { font-size: 15px; font-weight: 600; opacity: .7; }
.stat-card .lb { font-size: 13px; color: rgba(255, 255, 255, .6); line-height: 1.5; }
.stat-card.accent { background: rgba(224, 62, 46, .18); border-color: rgba(224, 62, 46, .40); }
.stat-card.accent .num { color: #fff; }

/* ---------- 9. 数据条（捷捷式） ---------- */
.kpi-strip {
  background: var(--white); border-bottom: 1px solid var(--ink-100);
}
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.kpi {
  padding: 34px 26px; border-right: 1px solid var(--ink-100);
  position: relative;
}
.kpi:last-child { border-right: 0; }
.kpi .num {
  font: 700 38px/1.1 var(--font-num); color: var(--blue-600); margin-bottom: 8px;
  display: flex; align-items: baseline; gap: 4px;
}
.kpi .num small { font-size: 16px; }
.kpi .lb { font-size: 14px; color: var(--ink-500); }

/* ---------- 10. 产品线矩阵 ---------- */
.line-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.line-card {
  position: relative; overflow: hidden;
  background: #fff; border: 1px solid var(--ink-100); border-radius: var(--r-lg);
  padding: 26px 24px 24px;
  transition: all .28s var(--ease);
  display: flex; flex-direction: column;
}
.line-card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 100%;
  background: linear-gradient(90deg, var(--blue-600) 35%, var(--red-500));
  transform: scaleX(0); transform-origin: left;
  transition: transform .34s var(--ease);
}
.line-card:hover { border-color: transparent; box-shadow: var(--sh-3); transform: translateY(-5px); }
.line-card:hover::before { transform: scaleX(1); }
.line-card .ic {
  width: 48px; height: 48px; border-radius: var(--r-md);
  background: var(--blue-50); color: var(--blue-600);
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
  transition: all .28s var(--ease);
}
.line-card .ic svg { width: 25px; height: 25px; }
.line-card:hover .ic { background: var(--blue-600); color: #fff; }
.line-card h3 { font-size: 17px; margin-bottom: 8px; }
.line-card .desc {
  font-size: 13.5px; color: var(--ink-500); line-height: 1.7;
  flex: 1; margin-bottom: 16px;
}
.line-card .meta {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px;   /* 英文文案比中文长，没这个间隙时两段会贴成「part numbersView 9 categories」 */
  padding-top: 15px; border-top: 1px solid var(--ink-100);
  font-size: 13px; color: var(--ink-400);
}
.line-card .meta b { font: 700 15px/1 var(--font-num); color: var(--blue-600); }
.line-card .meta .go { display: inline-flex; align-items: center; gap: 4px; color: var(--blue-600); font-weight: 600; }
.line-card .meta .go svg { width: 13px; height: 13px; transition: transform .22s var(--ease); }
.line-card:hover .meta .go svg { transform: translateX(4px); }

/* ---------- 11. 快捷选型 / 搜索 ---------- */
.select-bar {
  background: linear-gradient(135deg, var(--blue-800), var(--blue-600));
  border-radius: var(--r-lg); padding: 40px 44px; color: #fff;
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 40px; align-items: center;
  position: relative; overflow: hidden;
}
.select-bar::after {
  content: ""; position: absolute; right: -80px; bottom: -120px;
  width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle, rgba(224, 62, 46, .32), transparent 68%);
}
.select-bar > * { position: relative; z-index: 2; }
.select-bar h2 { color: #fff; font-size: 26px; margin-bottom: 10px; }
.select-bar p { color: rgba(255, 255, 255, .72); margin: 0; font-size: 14.5px; }
.search-form { display: flex; gap: 10px; }
.search-form input {
  width: 340px; height: 52px; padding: 0 20px;
  border: 1px solid rgba(255, 255, 255, .25); border-radius: var(--r-md);
  background: rgba(255, 255, 255, .12); color: #fff; font-size: 15px;
  transition: all .22s var(--ease);
}
.search-form input::placeholder { color: rgba(255, 255, 255, .55); }
.search-form input:focus { background: #fff; color: var(--ink-900); border-color: #fff; outline: none; }
.search-form input:focus::placeholder { color: var(--ink-400); }

/* ---------- 12. 应用领域 ---------- */
.app-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.app-card {
  position: relative; overflow: hidden;
  border: 1px solid var(--ink-100); border-radius: var(--r-lg);
  background: #fff; padding: 26px 22px;
  min-height: 158px; display: flex; flex-direction: column; justify-content: flex-end;
  transition: all .28s var(--ease);
}
.app-card .ic {
  position: absolute; right: 18px; top: 18px;
  width: 40px; height: 40px; color: var(--blue-100);
  transition: all .3s var(--ease);
}
.app-card .ic svg { width: 100%; height: 100%; }
.app-card h3 { font-size: 16px; margin-bottom: 6px; position: relative; }
.app-card p { font-size: 13px; color: var(--ink-400); margin: 0; position: relative; line-height: 1.6; }
.app-card:hover { border-color: var(--blue-600); background: var(--blue-50); transform: translateY(-4px); }
.app-card:hover .ic { color: var(--blue-400); transform: scale(1.08) rotate(-4deg); }
.app-card:hover h3 { color: var(--blue-700); }

/* ---------- 13. 优势 / 质量 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.adv-card {
  background: #fff; border: 1px solid var(--ink-100); border-radius: var(--r-lg);
  padding: 30px 28px; transition: all .28s var(--ease);
}
.adv-card:hover { box-shadow: var(--sh-2); transform: translateY(-4px); }
.adv-card .ic {
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--blue-50); color: var(--blue-600);
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.adv-card .ic svg { width: 23px; height: 23px; }
.adv-card h3 { font-size: 17px; margin-bottom: 10px; }
.adv-card p { font-size: 14px; color: var(--ink-500); line-height: 1.8; margin: 0; }

/* 认证徽标 */
.cert-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.cert {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 11px 18px; border-radius: var(--r-md);
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .16);
  font-size: 13.5px; color: rgba(255, 255, 255, .9); font-weight: 600;
}
.cert svg { width: 17px; height: 17px; color: var(--red-500); flex: none; }
.cert-plain { background: var(--ink-50); border-color: var(--ink-100); color: var(--ink-700); }
.cert-plain svg { color: var(--blue-600); }

/* ---------- 14. 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr) minmax(0, 1fr); gap: 22px; }
.news-card {
  background: #fff; border: 1px solid var(--ink-100); border-radius: var(--r-lg);
  overflow: hidden; display: flex; flex-direction: column;
  transition: all .28s var(--ease);
}
.news-card:hover { box-shadow: var(--sh-2); transform: translateY(-4px); border-color: transparent; }
.news-thumb {
  aspect-ratio: 16 / 9; position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--blue-800), var(--blue-500));
  display: flex; align-items: center; justify-content: center;
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.news-thumb svg { width: 46px; height: 46px; color: rgba(255, 255, 255, .35); }
.news-thumb .tag {
  position: absolute; left: 14px; top: 14px;
  background: rgba(255, 255, 255, .92); color: var(--blue-700);
  font-size: 12px; font-weight: 700; padding: 5px 11px; border-radius: 100px;
}
.news-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.news-body time {
  font: 600 13px/1 var(--font-num); color: var(--ink-400);
  display: block; margin-bottom: 10px;
}
.news-body h3 {
  font-size: 16px; line-height: 1.55; margin-bottom: 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card:hover h3 { color: var(--blue-600); }
.news-body p {
  font-size: 13.5px; color: var(--ink-500); line-height: 1.7; margin: 0;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card.feature .news-thumb { aspect-ratio: 16 / 10; }
.news-card.feature .news-body h3 { font-size: 20px; -webkit-line-clamp: 3; }

/* 资讯详情页题图（固定 16:9 容器，避免图片加载前后版式跳动） */
.art-figure {
  aspect-ratio: 16 / 9; margin: 0 0 28px; border-radius: var(--r-md); overflow: hidden;
  border: 1px solid var(--ink-100); background: var(--ink-100); line-height: 0;
}
.art-figure img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ---------- 15. CTA 条 ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--blue-900), var(--blue-700) 52%, #7d1f16);
  position: relative; overflow: hidden; color: #fff; padding: 60px 0;
}
.cta-band::before {
  content: ""; position: absolute; top: 0; right: 0; bottom: 0; left: 0;
  background-image: linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 48px 48px;
}
.cta-inner {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap;
}
.cta-inner h2 { color: #fff; font-size: 28px; margin-bottom: 8px; }
.cta-inner p { color: rgba(255, 255, 255, .7); margin: 0; font-size: 15px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 16. 页脚 ---------- */
.site-footer { background: var(--blue-900); color: rgba(255, 255, 255, .58); padding-top: 64px; font-size: 14px; }
.footer-top { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.4fr); gap: 36px; padding-bottom: 48px; }
.footer-brand img { height: 40px; opacity: .96; margin-bottom: 16px; }
.footer-brand p { font-size: 13.5px; line-height: 1.85; margin-bottom: 18px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 36px; height: 36px; border-radius: var(--r-sm);
  background: rgba(255, 255, 255, .07); display: flex; align-items: center; justify-content: center;
  color: rgba(255, 255, 255, .7); transition: all .22s var(--ease);
}
.footer-social a:hover { background: var(--blue-600); color: #fff; }
.footer-social svg { width: 17px; height: 17px; }
.footer-col h4 {
  color: #fff; font-size: 14px; margin-bottom: 18px; font-weight: 700;
  letter-spacing: .02em;
}
.footer-col li { margin-bottom: 11px; }
.footer-col a { color: rgba(255, 255, 255, .58); font-size: 13.5px; }
.footer-col a:hover { color: #fff; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 14px; font-size: 13.5px; line-height: 1.7; }
.footer-contact svg { width: 16px; height: 16px; flex: none; margin-top: 4px; color: var(--red-400); }
.footer-contact b { color: #fff; font: 700 17px/1.3 var(--font-num); display: block; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 22px 0; display: flex; align-items: center; justify-content: space-between;
  gap: 20px; flex-wrap: wrap; font-size: 13px;
}
.footer-bottom .links { display: flex; gap: 20px; flex-wrap: wrap; }

/* ---------- 17. 面包屑 & 页头 ---------- */
.page-hero {
  background: linear-gradient(115deg, var(--blue-900), var(--blue-700) 62%, #6b1e18);
  color: #fff; padding: 54px 0 50px; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; top: 0; right: 0; bottom: 0; left: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 100% at 80% 50%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 100% at 80% 50%, #000, transparent 75%);
}
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; font-size: 32px; margin-bottom: 10px; }
.page-hero p { color: rgba(255, 255, 255, .7); margin: 0; max-width: 720px; font-size: 15px; }
.breadcrumb {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  font-size: 13px; color: rgba(255, 255, 255, .55); margin-bottom: 16px;
}
.breadcrumb a { color: rgba(255, 255, 255, .75); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb svg { width: 12px; height: 12px; opacity: .5; }
/* 英文站的面包屑用 / 作分隔符（中文站用内联 chevron 图标），压暗以对齐视觉重量 */
.breadcrumb .sep { opacity: .45; }
.breadcrumb .cur { color: #fff; }

/* ---------- 18. 产品列表 / 筛选 ---------- */
.catalog-layout { display: grid; grid-template-columns: 268px minmax(0, 1fr); gap: 34px; align-items: start; }
.side-panel {
  background: #fff; border: 1px solid var(--ink-100); border-radius: var(--r-lg);
  overflow: hidden; position: sticky; top: calc(var(--hdr-h) + 20px);
}
.side-panel .hd {
  padding: 18px 22px; border-bottom: 1px solid var(--ink-100);
  font-size: 15px; font-weight: 700; color: var(--ink-900);
  display: flex; align-items: center; gap: 9px;
}
.side-panel .hd svg { width: 17px; height: 17px; color: var(--blue-600); }
.cat-tree { padding: 10px 12px; max-height: calc(100dvh - 220px); overflow-y: auto; }
.cat-tree > li { margin-bottom: 2px; }
.cat-tree .grp {
  display: flex; align-items: center; gap: 9px;
  padding: 11px 12px; border-radius: var(--r-sm); cursor: pointer;
  font-size: 14px; font-weight: 700; color: var(--ink-900);
  transition: background .18s var(--ease);
}
.cat-tree .grp:hover { background: var(--ink-50); }
.cat-tree .grp .ic { width: 16px; height: 16px; color: var(--blue-600); flex: none; }
.cat-tree .grp span:not(.cnt) { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cat-tree .grp .cnt { margin-left: auto; font: 600 12px/1 var(--font-num); color: var(--ink-400); flex: none; }
.cat-tree .sub { padding: 2px 0 8px 34px; }
.cat-tree .sub a {
  display: block; padding: 7px 10px; border-radius: var(--r-sm);
  font-size: 13.5px; color: var(--ink-500);
  display: flex; justify-content: space-between; gap: 8px; align-items: center;
}
.cat-tree .sub a .nm { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cat-tree .sub a i { font: 600 12px/1 var(--font-num); font-style: normal; opacity: .7; flex: none; }
.cat-tree .sub a:hover { background: var(--blue-50); color: var(--blue-600); }
.cat-tree .sub a.on { background: var(--blue-600); color: #fff; font-weight: 600; }

.toolbar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  background: #fff; border: 1px solid var(--ink-100); border-radius: var(--r-lg);
  padding: 16px 20px; margin-bottom: 22px;
}
.toolbar .field { display: flex; align-items: center; gap: 8px; }
/* 关键词框吃掉剩余宽度，窄屏下不至于三个筛选项各占一行 */
.toolbar .field:first-child { flex: 1 1 240px; min-width: 0; }
.toolbar .field label { font-size: 13.5px; color: var(--ink-500); white-space: nowrap; }
.toolbar input[type="search"], .toolbar select {
  height: 40px; padding: 0 14px; border: 1px solid var(--ink-200);
  border-radius: var(--r-md); font-size: 14px; background: #fff; min-width: 180px;
  transition: border-color .2s var(--ease);
}
.toolbar input[type="search"] { min-width: 200px; flex: 1 1 auto; }
.toolbar select { min-width: 140px; }
.toolbar input:focus, .toolbar select:focus { border-color: var(--blue-500); outline: none; }
.toolbar .spacer { margin-left: auto; }
.result-count { font-size: 14px; color: var(--ink-500); }
.result-count b { font: 700 17px/1 var(--font-num); color: var(--blue-600); }

.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.prod-card {
  background: #fff; border: 1px solid var(--ink-100); border-radius: var(--r-lg);
  padding: 20px; display: flex; flex-direction: column;
  transition: all .24s var(--ease);
}
.prod-card:hover { border-color: var(--blue-400); box-shadow: var(--sh-2); transform: translateY(-3px); }
.prod-card .top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.prod-card .chip {
  width: 38px; height: 38px; border-radius: var(--r-sm); flex: none;
  background: var(--blue-50); color: var(--blue-600);
  display: flex; align-items: center; justify-content: center;
}
.prod-card .chip svg { width: 20px; height: 20px; }
.prod-card .pkg {
  font: 600 11.5px/1 var(--font-num); color: var(--ink-500);
  background: var(--ink-50); border: 1px solid var(--ink-100);
  padding: 5px 8px; border-radius: var(--r-sm); white-space: nowrap;
}
.prod-card .model {
  font: 700 16px/1.35 var(--font-num); color: var(--ink-900);
  letter-spacing: .01em; margin-bottom: 6px; word-break: break-all;
}
.prod-card:hover .model { color: var(--blue-600); }
.prod-card .name {
  font-size: 13px; color: var(--ink-500); line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: 14px; min-height: 42px;
}
.prod-card .specs {
  border-top: 1px dashed var(--ink-200); padding-top: 12px;
  display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; flex: 1;
}
.prod-card .specs div { display: flex; gap: 8px; font-size: 12.5px; }
.prod-card .specs dt { color: var(--ink-400); flex: none; min-width: 62px; }
.prod-card .specs dd { margin: 0; color: var(--ink-700); font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.prod-card .bot {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding-top: 13px; border-top: 1px solid var(--ink-100);
}
.price { font: 700 17px/1 var(--font-num); color: var(--red-500); }
.price small { font-size: 12px; font-weight: 600; }
.price.muted { color: var(--ink-400); font-size: 13px; font-weight: 600; font-family: var(--font-sans); }
.stock { font-size: 12.5px; color: var(--ink-500); }
.stock b { font: 700 13px/1 var(--font-num); color: var(--ok); }

/* 分页 */
.pager { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 38px; flex-wrap: wrap; }
.pager a, .pager span {
  min-width: 38px; height: 38px; padding: 0 12px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--ink-200); border-radius: var(--r-md);
  font: 600 14px/1 var(--font-num); color: var(--ink-700); background: #fff;
  transition: all .2s var(--ease);
}
.pager a:hover { border-color: var(--blue-600); color: var(--blue-600); }
.pager .on { background: var(--blue-600); border-color: var(--blue-600); color: #fff; }
.pager .gap { border: 0; background: none; color: var(--ink-400); }
.pager .nav { padding: 0 16px; font-family: var(--font-sans); }

/* ---------- 19. 产品详情 ---------- */
.detail-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 34px; align-items: start; }
.panel {
  background: #fff; border: 1px solid var(--ink-100); border-radius: var(--r-lg);
  overflow: hidden; margin-bottom: 22px;
}
.panel .hd {
  padding: 18px 24px; border-bottom: 1px solid var(--ink-100);
  font-size: 16px; font-weight: 700; color: var(--ink-900);
  display: flex; align-items: center; gap: 10px;
}
.panel .hd svg { width: 18px; height: 18px; color: var(--blue-600); }
.panel .hd .right { margin-left: auto; font-size: 13px; font-weight: 500; color: var(--ink-400); }
.panel .bd { padding: 24px; }

.prod-head { display: flex; gap: 28px; align-items: flex-start; flex-wrap: wrap; }
.prod-head .visual {
  width: 168px; height: 168px; flex: none; border-radius: var(--r-lg);
  background: linear-gradient(135deg, var(--blue-800), var(--blue-500));
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.prod-head .visual::before {
  content: ""; position: absolute; top: 0; right: 0; bottom: 0; left: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .07) 1px, transparent 1px);
  background-size: 20px 20px;
}
.prod-head .visual svg { width: 68px; height: 68px; color: rgba(255, 255, 255, .9); position: relative; }
.prod-head .info { flex: 1; min-width: 280px; }
.prod-head h1 { font: 700 30px/1.25 var(--font-num); letter-spacing: .01em; margin-bottom: 10px; word-break: break-all; }
.prod-head .sub { font-size: 15px; color: var(--ink-500); margin-bottom: 16px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.tagpill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 13px; border-radius: 100px; font-size: 13px; font-weight: 600;
  background: var(--blue-50); color: var(--blue-700); border: 1px solid var(--blue-100);
}
.tagpill.gray { background: var(--ink-50); color: var(--ink-500); border-color: var(--ink-100); }
.tagpill.red { background: var(--red-100); color: var(--red-600); border-color: #f9cdc6; }
.tagpill.green { background: #e8f8ef; color: var(--ok); border-color: #c8ecd8; }

.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 1px; background: var(--ink-100); border: 1px solid var(--ink-100); border-radius: var(--r-md); overflow: hidden; }
.facts > div { background: #fff; padding: 14px 16px; }
.facts dt { font-size: 12.5px; color: var(--ink-400); margin-bottom: 5px; }
.facts dd { margin: 0; font-size: 14.5px; font-weight: 700; color: var(--ink-900); word-break: break-all; }

/* 参数表 */
.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.spec-table th, .spec-table td {
  padding: 12px 16px; text-align: left;
  border-bottom: 1px solid var(--ink-100);
}
.spec-table th {
  background: var(--ink-50); font-weight: 700; color: var(--ink-900);
  font-size: 13px; letter-spacing: .02em; white-space: nowrap;
}
.spec-table th:first-child { width: 34%; }
.spec-table td { color: var(--ink-700); }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.spec-table tbody tr:hover td, .spec-table tbody tr:hover th { background: var(--blue-50); }
.spec-table .val { font-weight: 600; color: var(--ink-900); }

/* 价格阶梯 */
.tier-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.tier-table th, .tier-table td { padding: 11px 14px; border-bottom: 1px solid var(--ink-100); text-align: right; }
.tier-table th { background: var(--ink-50); font-size: 12.5px; color: var(--ink-500); font-weight: 700; white-space: nowrap; }
.tier-table th:first-child, .tier-table td:first-child { text-align: left; }
.tier-table td { font: 600 14px/1.5 var(--font-num); }
.tier-table .best { color: var(--red-500); font-weight: 700; }

.side-cta {
  background: linear-gradient(150deg, var(--blue-800), var(--blue-600));
  border-radius: var(--r-lg); padding: 26px 24px; color: #fff; margin-bottom: 22px;
}
.side-cta h3 { color: #fff; font-size: 17px; margin-bottom: 10px; }
.side-cta p { color: rgba(255, 255, 255, .72); font-size: 13.5px; line-height: 1.75; margin-bottom: 18px; }
.side-cta .btn { width: 100%; justify-content: center; margin-bottom: 10px; }
.side-cta .btn:last-child { margin-bottom: 0; }
.side-cta .tel { text-align: center; font: 700 19px/1.4 var(--font-num); color: #fff; margin-top: 6px; display: block; letter-spacing: .02em; }
.side-cta .tel:hover { color: #fff; }

/* ---------- 20. 选型表 ---------- */
.selector-panel { background: #fff; border: 1px solid var(--ink-100); border-radius: var(--r-lg); overflow: hidden; }
.selector-head {
  padding: 22px 26px; border-bottom: 1px solid var(--ink-100);
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.selector-head h2 { font-size: 19px; }
.selector-head .spacer { margin-left: auto; }
.filters { padding: 22px 26px; display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px 22px; background: var(--ink-50); border-bottom: 1px solid var(--ink-100); }
.filter-field label { display: block; font-size: 13px; font-weight: 700; color: var(--ink-700); margin-bottom: 7px; }
.filter-field input, .filter-field select {
  width: 100%; height: 40px; padding: 0 12px;
  border: 1px solid var(--ink-200); border-radius: var(--r-md);
  font-size: 13.5px; background: #fff;
}
.filter-field input:focus, .filter-field select:focus { border-color: var(--blue-500); outline: none; }
.table-scroll { overflow-x: auto; }
.select-table { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 900px; }
.select-table th, .select-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--ink-100); white-space: nowrap; }
.select-table thead th {
  background: var(--ink-50); font-size: 12.5px; color: var(--ink-500);
  font-weight: 700; position: sticky; top: 0; z-index: 2;
  border-bottom: 1px solid var(--ink-200);
}
.select-table tbody tr:hover { background: var(--blue-50); }
.select-table .mdl { font: 700 13.5px/1.4 var(--font-num); color: var(--blue-700); }
.select-table .mdl:hover { color: var(--red-500); }
.select-table td.p { font: 600 13.5px/1.4 var(--font-num); color: var(--red-500); }
.select-table td.muted { color: var(--ink-400); }
.empty-state { padding: 70px 20px; text-align: center; color: var(--ink-400); }
.empty-state svg { width: 54px; height: 54px; margin: 0 auto 16px; color: var(--ink-200); }

/* ---------- 21. 应用 / 关于 / 质量 / 联系 ---------- */
.app-detail { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.app-detail-card {
  border: 1px solid var(--ink-100); border-radius: var(--r-lg); background: #fff;
  padding: 30px; display: flex; gap: 24px; transition: all .28s var(--ease);
}
.app-detail-card:hover { box-shadow: var(--sh-2); border-color: transparent; }
.app-detail-card .ic {
  width: 62px; height: 62px; flex: none; border-radius: var(--r-md);
  background: var(--blue-50); color: var(--blue-600);
  display: flex; align-items: center; justify-content: center;
}
.app-detail-card .ic svg { width: 30px; height: 30px; }
.app-detail-card h3 { font-size: 18px; margin-bottom: 10px; }
.app-detail-card p { font-size: 14px; color: var(--ink-500); line-height: 1.8; margin-bottom: 12px; }
.chip-list { display: flex; flex-wrap: wrap; gap: 7px; }
.chip-list span {
  font-size: 12.5px; padding: 5px 11px; border-radius: var(--r-sm);
  background: var(--ink-50); color: var(--ink-500); border: 1px solid var(--ink-100);
}

.prose { max-width: 860px; }
.prose h2 { font-size: 25px; margin: 40px 0 16px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 18px; margin: 28px 0 12px; }
.prose p { font-size: 15px; line-height: 1.95; color: var(--ink-700); margin-bottom: 16px; }
.prose ul { margin: 0 0 18px; }
.prose ul li { position: relative; padding-left: 22px; margin-bottom: 10px; font-size: 15px; line-height: 1.85; }
.prose ul li::before {
  content: ""; position: absolute; left: 4px; top: 12px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--red-500);
}

.timeline { position: relative; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: var(--ink-100); }
.tl-item { position: relative; padding-bottom: 26px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -30px; top: 6px;
  width: 16px; height: 16px; border-radius: 50%;
  background: #fff; border: 3px solid var(--blue-600);
}
.tl-item time { font: 700 14px/1 var(--font-num); color: var(--blue-600); display: block; margin-bottom: 7px; }
.tl-item h4 { font-size: 16px; margin-bottom: 6px; }
.tl-item p { font-size: 14px; color: var(--ink-500); margin: 0; }

.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 30px; }
.contact-card {
  background: #fff; border: 1px solid var(--ink-100); border-radius: var(--r-lg);
  padding: 28px 24px; text-align: center; transition: all .26s var(--ease);
}
.contact-card:hover { box-shadow: var(--sh-2); transform: translateY(-4px); }
.contact-card .ic {
  width: 48px; height: 48px; margin: 0 auto 16px; border-radius: 50%;
  background: var(--blue-50); color: var(--blue-600);
  display: flex; align-items: center; justify-content: center;
}
.contact-card .ic svg { width: 22px; height: 22px; }
.contact-card h3 { font-size: 15px; margin-bottom: 8px; }
.contact-card p { font-size: 14px; color: var(--ink-500); margin: 0; line-height: 1.75; }
.contact-card .big { font: 700 20px/1.4 var(--font-num); color: var(--blue-700); }

.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.form-field { display: flex; flex-direction: column; gap: 8px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 14px; font-weight: 600; color: var(--ink-700); }
.form-field label .req { color: var(--red-500); }
.form-field input, .form-field select, .form-field textarea {
  padding: 12px 14px; border: 1px solid var(--ink-200); border-radius: var(--r-md);
  font-size: 14.5px; background: #fff; width: 100%;
  transition: border-color .2s var(--ease);
}
.form-field textarea { min-height: 118px; resize: vertical; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  border-color: var(--blue-500); outline: none; box-shadow: 0 0 0 3px rgba(0, 73, 157, .1);
}
.form-note { font-size: 13px; color: var(--ink-400); }
.form-note.ok { color: var(--ok); font-weight: 600; }
.form-note.err { color: var(--red-600); font-weight: 600; }
/* 发信失败时的 mailto 兜底链接：需要比周围正文更醒目，让人一眼看到还有这条路 */
.form-note a { color: var(--red-600); text-decoration: underline; text-underline-offset: 2px; }
.form-note a:hover { color: var(--red-500); }
/* 反垃圾蜜罐：对真人不可见、对脚本可见（被填了就判定为机器人） */
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* 下载列表 */
.dl-list { border: 1px solid var(--ink-100); border-radius: var(--r-lg); overflow: hidden; background: #fff; }
.dl-item {
  display: flex; align-items: center; gap: 18px;
  padding: 20px 24px; border-bottom: 1px solid var(--ink-100);
  transition: background .18s var(--ease);
}
.dl-item:last-child { border-bottom: 0; }
.dl-item:hover { background: var(--blue-50); }
.dl-item .ic {
  width: 42px; height: 42px; flex: none; border-radius: var(--r-sm);
  background: var(--blue-50); color: var(--blue-600);
  display: flex; align-items: center; justify-content: center;
}
.dl-item .ic svg { width: 20px; height: 20px; }
.dl-item .meta { flex: 1; min-width: 0; }
.dl-item .meta h4 { font-size: 15px; margin-bottom: 4px; }
.dl-item .meta p { font-size: 13px; color: var(--ink-400); margin: 0; }
.dl-item .act { flex: none; }

/* 数据表（选型结果导出提示） */
.note-bar {  display: flex; align-items: flex-start; gap: 12px;
  background: var(--cyan-100); border: 1px solid #bfe8f7; border-radius: var(--r-md);
  padding: 15px 20px; font-size: 13.5px; color: #0d5f80; margin-bottom: 22px;
}
.note-bar svg { width: 18px; height: 18px; flex: none; margin-top: 3px; color: var(--red-500); }
.note-bar b { color: #08475f; }

/* 关于我们：正文 + 侧栏双栏 */
.split-2 { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: 56px; align-items: start; }
.split-2 > aside { display: flex; flex-direction: column; }

/* 选型中心行内控件 */
.sel-label { font-size: 13.5px; color: var(--ink-500); white-space: nowrap; }
.inline-select {
  height: 40px; padding: 0 14px; min-width: 190px;
  border: 1px solid var(--ink-200); border-radius: var(--r-md);
  font-size: 14px; background: #fff; transition: border-color .2s var(--ease);
}
.inline-select:focus { border-color: var(--blue-500); outline: none; }

/* ---------- 21b. 品类药丸（英文站产品中心 / 选型页的「全部品类」区块） ----------
   这套 cat-block / cat-pills / cat-pill 是英文站独有的组件，中文站没有对应结构，
   早前只写了标记没写样式，整块退化成一行挤在一起的裸文本
   （「AC-DC Controllers & Regulators10DC-DC Converters62…」）。 */
.cat-block { margin-bottom: 26px; }
.cat-block:last-child { margin-bottom: 0; }
.cat-block h3 { font-size: 15px; color: var(--ink-900); margin-bottom: 12px; }
.cat-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.cat-pill {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 13px; border: 1px solid var(--ink-100); border-radius: 999px;
  background: #fff; font-size: 13.5px; color: var(--ink-700);
  transition: all .2s var(--ease);
}
.cat-pill:hover {
  border-color: var(--blue-500); color: var(--blue-600);
  background: var(--blue-50); transform: translateY(-1px);
}
.cat-pill span {
  font: 600 12px/1 var(--font-num); color: var(--ink-400);
  background: var(--ink-50); border-radius: 999px;
  padding: 3px 7px; min-width: 24px; text-align: center;
}
.cat-pill:hover span { color: var(--blue-600); background: #fff; }

/* ---------- 22. 动效 ---------- */
/* 滚动入场：初始隐藏只在 JS 可用（html.js）时生效，脚本失效则内容照常显示 */
.js [data-reveal] { opacity: 0; transform: translateY(20px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.js [data-reveal].in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  [data-reveal], .js [data-reveal] { opacity: 1; transform: none; }
}

/* ---------- 23. 响应式 ---------- */
@media (max-width: 1180px) {
  .line-grid { grid-template-columns: repeat(3, 1fr); }
  .app-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-top { grid-template-columns: 1.4fr 1fr 1fr 1.4fr; }
  .footer-top .footer-col:nth-child(2) { display: none; }
}

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero h1 { font-size: 40px; }
  .hero h1.en-h1 { font-size: 38px; }
  .split-2 { grid-template-columns: 1fr; gap: 34px; }
  .catalog-layout { grid-template-columns: 1fr; }
  .side-panel { position: static; }
  .for-mobile { display: block; }
  .detail-layout { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .news-card.feature { grid-column: 1 / -1; }
  .app-detail { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .kpi:nth-child(2) { border-right: 0; }
  .kpi:nth-child(-n+2) { border-bottom: 1px solid var(--ink-100); }
}

/* 一级导航与右侧工具区的收缩档位：
   ≥1441px  完整形态（品牌副标题 + 带文字的搜索框）
   <1440px  搜索框收成图标按钮
   <1360px  隐藏品牌副标题
   <1080px  9 个一级栏目已无法单行容纳，整体交给抽屉菜单 */
@media (max-width: 1440px) {
  .btn-search { min-width: 0; width: 40px; padding: 0; justify-content: center; }
  .btn-search span, .btn-search kbd { display: none; }
}

@media (max-width: 1360px) {
  .brand .brand-cn { display: none; }
}

/* 英文站专属档位：英文导航项是长单词，1180–1240px 之间右侧询价按钮会顶出视口。
   该按钮在顶栏（Request samples）与抽屉菜单里都有同款入口，收掉无功能损失。
   用 html[lang="en"] 限定，中文站 1180px 原本就不溢出、不受影响。 */
@media (max-width: 1320px) {
  html[lang="en"] .nav-tools .btn-primary { display: none; }
}

/* 英文站专属档位：英文导航项是长单词，10 个一级栏目（含 Agents / News）
   在 1920px 都会顶出视口约 73px，需要比中文站再收一档间距与字号。
   中文站不受影响。 */
@media (min-width: 1081px) {
  html[lang="en"] .mainnav > li > a {
    padding: 0 clamp(6px, .7vw, 10px);
    font-size: clamp(12px, .85vw, 14px);
  }
}

@media (max-width: 1080px) {
  .mainnav { display: none; }
  .btn-search { display: none; }
  .nav-toggle { display: flex; }
}

/* 极窄屏（≤430px）：页头只留 logo + 汉堡按钮。
   「获取报价」在抽屉菜单底部已有入口，不必再挤占页头宽度。 */
@media (max-width: 430px) {
  .nav-tools > .btn { display: none; }
}

@media (max-width: 900px) {
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .line-grid { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: repeat(3, 1fr); }
  .adv-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .select-bar { grid-template-columns: 1fr; gap: 24px; padding: 32px 26px; }
  .search-form { flex-direction: column; }
  .search-form input { width: 100%; }
  .search-form .btn { width: 100%; }
  .footer-top { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .footer-top .footer-col:nth-child(2) { display: block; }
}

@media (max-width: 680px) {
  :root { --hdr-h: 62px; }
  body { font-size: 14.5px; }
  .section { padding: 56px 0; }
  .wrap { padding: 0 18px; }
  /* logo 原始宽高比约 8.8:1，26px 高时宽达 228px，窄屏会把汉堡菜单挤出屏幕 */
  .nav-row { gap: 10px; }
  .brand { gap: 8px; }
  .brand img { height: 26px; }
  .topbar .topbar-left .hide-sm { display: none; }
  .hero { min-height: auto; padding: 48px 0 56px; }
  .hero h1 { font-size: 30px; }
  .hero h1.en-h1 { font-size: 27px; }
  .hero-sub { font-size: 15px; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card { padding: 16px; }
  .stat-card .num { font-size: 26px; }
  .sec-head h2 { font-size: 25px; }
  .prod-grid { grid-template-columns: 1fr; }
  .line-grid { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: 1fr; }
  .kpi { border-right: 0; border-bottom: 1px solid var(--ink-100); }
  .kpi:last-child { border-bottom: 0; }
  .page-hero { padding: 34px 0 32px; }
  .page-hero h1 { font-size: 24px; }
  .form-grid { grid-template-columns: 1fr; }
  .prod-head .visual { width: 100%; height: 132px; }
  .prod-head h1 { font-size: 23px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .adv-card, .app-detail-card { padding: 22px; }
  .app-detail-card { flex-direction: column; gap: 16px; }
  .footer-top { grid-template-columns: 1fr; }
  .brand .brand-cn { display: none; }
  .dl-item { flex-wrap: wrap; }
  .toolbar .spacer { margin-left: 0; width: 100%; }
  .toolbar input[type="search"] { min-width: 0; width: 100%; }
  .toolbar .field { flex: 1; }
  .selector-head { gap: 12px; }
  .selector-head h2 { width: 100%; }
  .inline-select { width: 100%; min-width: 0; }
  .selector-head .field { flex: 1; min-width: 200px; }
}

/* ---------- 24. 移动端抽屉导航 ---------- */
.mobile-nav {
  position: fixed; top: 0; right: 0; bottom: 0; left: 0; z-index: 150;
  background: #fff; transform: translateX(100%);
  transition: transform .3s var(--ease);
  display: none; flex-direction: column;
}
/* 打开状态：JS 只给 body 加 nav-open，所以位移归零也必须挂在这个选择器上。
   （原先写成 .mobile-nav.open，而脚本从不加 open 类，抽屉虽然 display:flex
     却仍停在 translateX(100%)，也就是屏幕外，手机上等于打不开菜单。） */
body.nav-open .mobile-nav { display: flex; transform: none; }
.mobile-nav .mh {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 18px; height: var(--hdr-h); border-bottom: 1px solid var(--ink-100);
  flex: none;
}
.mobile-nav .mh img { height: 30px; width: auto; }
.mobile-nav .mclose {
  width: 40px; height: 40px; flex: none; border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-700); background: var(--ink-50);
}
.mobile-nav .mclose:hover { background: var(--ink-100); }
.mobile-nav .mclose svg { width: 20px; height: 20px; }
.mobile-nav .mb { flex: 1; overflow-y: auto; padding: 14px 18px 40px; }
.mobile-nav .mb > li { border-bottom: 1px solid var(--ink-100); }
.mobile-nav .mb > li > a {
  display: block; padding: 15px 4px; font-size: 16px; font-weight: 600; color: var(--ink-900);
}
.mobile-nav .sub a { display: block; padding: 10px 14px; font-size: 14px; color: var(--ink-500); }
.mobile-nav .sub { padding: 0 0 10px 10px; border-left: 1px solid var(--ink-100); margin: 0 0 10px 4px; }
.mobile-nav .sub a strong { color: var(--blue-600); font-weight: 600; }
.mobile-nav .mfoot { padding: 18px; border-top: 1px solid var(--ink-100); display: grid; gap: 10px; }

/* ---------- 25. 搜索弹层 ---------- */
.search-modal {
  position: fixed; top: 0; right: 0; bottom: 0; left: 0; z-index: 160;
  background: rgba(0, 17, 39, .55); backdrop-filter: blur(4px);
  display: none; align-items: flex-start; justify-content: center; padding-top: 12vh;
}
.search-modal.open { display: flex; }
.search-modal .box {
  width: min(680px, 92vw); background: #fff; border-radius: var(--r-lg);
  box-shadow: var(--sh-3); overflow: hidden;
}
.search-modal .box form { display: flex; align-items: center; gap: 12px; padding: 18px 22px; border-bottom: 1px solid var(--ink-100); }
.search-modal .box form svg { width: 20px; height: 20px; color: var(--ink-400); flex: none; }
.search-modal .box input { flex: 1; border: 0; font-size: 17px; outline: none; }
.search-modal .hint { padding: 16px 22px 20px; }
.search-modal .hint .t { font-size: 12px; color: var(--ink-400); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 12px; }
.search-modal .hint .chips { display: flex; flex-wrap: wrap; gap: 8px; }
.search-modal .hint .chips a {
  font-size: 13px; padding: 7px 14px; border-radius: 100px;
  background: var(--ink-50); border: 1px solid var(--ink-100); color: var(--ink-700);
}
.search-modal .hint .chips a:hover { background: var(--blue-600); border-color: var(--blue-600); color: #fff; }
.search-results { max-height: 46vh; overflow-y: auto; }
.search-results a {
  display: flex; align-items: center; gap: 14px; padding: 13px 22px;
  border-bottom: 1px solid var(--ink-100);
}
.search-results a:hover { background: var(--blue-50); }
.search-results .m { font: 700 14px/1.4 var(--font-num); color: var(--ink-900); }
.search-results .c { font-size: 12.5px; color: var(--ink-400); }
.search-results .pk { margin-left: auto; font: 600 11.5px/1 var(--font-num); color: var(--ink-500); background: var(--ink-50); padding: 5px 8px; border-radius: var(--r-sm); }
.search-results .none { padding: 40px 22px; text-align: center; color: var(--ink-400); font-size: 14px; }

/* 打印 */
@media print {
  .site-header, .topbar, .site-footer, .cta-band, .side-cta, .search-modal, .mobile-nav { display: none !important; }
  body { font-size: 12px; }
  .panel { border: 1px solid #ccc; break-inside: avoid; }
}


/* ============ 页脚微信二维码（2026-10-15 遵旨调整） ============ */
.footer-wechat { display: flex; align-items: center; gap: 14px; margin-top: 18px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12); }
.footer-wechat img { width: 96px; height: 96px; border-radius: 8px; background: #fff; padding: 4px; flex: none; }
.footer-wechat b { display: block; font-size: 15px; color: #fff; margin-bottom: 6px; }
.footer-wechat span { display: block; font-size: 12.5px; color: #8fa3bd; line-height: 1.6; }