/* ==========================================================================
   IKV Tribologie — 中文站样式表
   品牌视觉还原自 https://www.ikv.fr
   主色   #27318c (brand blue)   深辅色 #1c2364   正文 #372c26
   字体   Work Sans / 思源黑体系列回退
   ========================================================================== */

/* ---------- 变量 ---------- */
:root {
  --brand: #27318c;
  --brand-dark: #1c2364;
  --brand-deep: #06071a;
  --brand-line: #212a7a;
  --ink: #372c26;
  --ink-soft: #5c5049;
  --muted: #777777;
  --line: #dddddd;
  --line-soft: #eeeeee;
  --bg-soft: #f5f6fa;
  --white: #ffffff;
  --radius: 2px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);
  --shadow: 0 6px 24px rgba(39, 49, 140, .10);
  --shadow-lg: 0 18px 48px rgba(28, 35, 100, .16);
  --nav-h: 58px;
  --topbar-h: 44px;
  --font: "Work Sans", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
          "Source Han Sans SC", "Noto Sans SC", -apple-system, sans-serif;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--ink);
  background: var(--white);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: var(--brand); text-decoration: none; transition: color .25s var(--ease); }
a:hover { color: var(--brand-dark); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 .8em;
  font-weight: 600;
  line-height: 1.28;
  color: var(--brand);
  letter-spacing: -.01em;
}
p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }
button { font-family: inherit; cursor: pointer; }
label { display: block; }

/* ---------- 通用容器 ---------- */
.wrap { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: 940px; }
.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;
}
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 9999;
  background: var(--brand); color: #fff; padding: 10px 18px; border-radius: var(--radius);
}
.skip-link:focus { left: 12px; top: 12px; color: #fff; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .55em;
  padding: 13px 30px;
  font-size: .875rem; font-weight: 600; letter-spacing: .09em; text-transform: uppercase;
  border: 2px solid var(--brand); border-radius: var(--radius);
  background: var(--brand); color: #fff;
  transition: all .3s var(--ease);
}
.btn:hover { background: var(--brand-dark); border-color: var(--brand-dark); color: #fff; }
.btn--ghost { background: transparent; color: var(--brand); }
.btn--ghost:hover { background: var(--brand); color: #fff; }
.btn--light { background: #fff; border-color: #fff; color: var(--brand); }
.btn--light:hover { background: transparent; border-color: #fff; color: #fff; }
.btn--sm { padding: 9px 20px; font-size: .78rem; }
.btn .arw { transition: transform .3s var(--ease); }
.btn:hover .arw { transform: translateX(4px); }

/* ---------- 章节标题 ---------- */
.sec { padding: 84px 0; }
.sec--tight { padding: 58px 0; }
.sec--soft { background: var(--bg-soft); }
.sec-head { margin-bottom: 44px; }
.sec-head--center { text-align: center; }
.eyebrow {
  display: inline-block; margin-bottom: 14px;
  font-size: .75rem; font-weight: 600; letter-spacing: .22em; text-transform: uppercase;
  color: var(--brand); opacity: .72;
}
.sec-title { font-size: clamp(1.65rem, 3.4vw, 2.4rem); }
.sec-title::after {
  content: ""; display: block; width: 54px; height: 3px;
  margin-top: 18px; background: var(--brand);
}
.sec-head--center .sec-title::after { margin-left: auto; margin-right: auto; }
.sec-lead {
  max-width: 720px; margin-top: 20px; font-size: 1.06rem; color: var(--ink-soft);
}
.sec-head--center .sec-lead { margin-left: auto; margin-right: auto; }

/* ==========================================================================
   顶部工具条 / 导航
   ========================================================================== */
.topbar {
  background: var(--brand-dark); color: #fff; font-size: .85rem;
}
.topbar__in {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; min-height: var(--topbar-h); padding: 6px 24px;
  max-width: 1240px; margin: 0 auto;
}
.topbar__tag { display: flex; align-items: center; gap: 10px; letter-spacing: .04em; opacity: .95; }
.topbar__tag strong { font-weight: 600; }
.topbar__tag .dot { width: 4px; height: 4px; border-radius: 50%; background: #fff; opacity: .6; }
.topbar__right { display: flex; align-items: center; gap: 18px; }
.topbar__tel { display: flex; align-items: center; gap: 7px; color: #fff; font-weight: 500; }
.topbar__tel:hover { opacity: .78; }
.socials { display: flex; align-items: center; gap: 9px; }
.socials a {
  display: grid; place-items: center; width: 28px; height: 28px;
  border: 1px solid rgba(255, 255, 255, .34); border-radius: 50%;
  color: #fff; transition: all .28s var(--ease);
}
.socials a:hover { background: #fff; color: var(--brand); border-color: #fff; }
.socials svg { width: 14px; height: 14px; fill: currentColor; }

/* --- 主导航 --- */
.nav {
  position: sticky; top: 0; z-index: 1000;
  background: #fff; border-bottom: 1px solid var(--line-soft);
  box-shadow: 0 1px 0 rgba(0, 0, 0, .03);
  transition: box-shadow .3s var(--ease);
}
.nav.is-stuck { box-shadow: 0 4px 20px rgba(0, 0, 0, .09); }
.nav__in {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  max-width: 1240px; margin: 0 auto; padding: 0 24px; min-height: 74px;
}
.brand { display: flex; align-items: center; flex: 0 0 auto; }
.brand img { height: 42px; width: auto; }
.brand__txt { line-height: 1.15; margin-left: 12px; }
.brand__txt b { display: block; font-size: 1.02rem; font-weight: 700; color: var(--brand); letter-spacing: .02em; }
.brand__txt span { display: block; font-size: .66rem; letter-spacing: .17em; color: var(--muted); text-transform: uppercase; }

.menu { display: flex; align-items: center; gap: 2px; }
.menu > li { position: relative; }
.menu > li > a {
  display: flex; align-items: center; gap: 5px;
  padding: 26px 15px; font-size: .92rem; font-weight: 500; color: var(--ink);
  white-space: nowrap; transition: color .25s var(--ease);
}
.menu > li > a:hover,
.menu > li > a.is-active { color: var(--brand); }
.menu > li > a.is-active::after {
  content: ""; position: absolute; left: 15px; right: 15px; bottom: 0;
  height: 3px; background: var(--brand);
}
.menu > li.has-sub > a .caret {
  width: 7px; height: 7px; border-right: 1.6px solid currentColor; border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg) translateY(-2px); transition: transform .28s var(--ease); opacity: .65;
}
.menu > li.has-sub:hover > a .caret { transform: rotate(225deg) translateY(-2px); }

/* 下拉 */
.sub {
  position: absolute; left: 0; top: 100%; min-width: 246px;
  background: #fff; border-top: 3px solid var(--brand);
  box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all .26s var(--ease); z-index: 20;
}
.menu > li.has-sub:hover .sub { opacity: 1; visibility: visible; transform: translateY(0); }
.sub li a {
  display: block; padding: 11px 20px; font-size: .875rem; color: var(--ink);
  border-bottom: 1px solid var(--line-soft); transition: all .22s var(--ease);
}
.sub li:last-child a { border-bottom: 0; }
.sub li a:hover { background: var(--brand); color: #fff; padding-left: 26px; }
.sub--cols { min-width: 620px; padding: 18px 20px; columns: 2; column-gap: 26px; }
.sub--cols li a { border-bottom: 0; padding: 8px 6px; border-radius: var(--radius); }
.sub--cols li a:hover { padding-left: 14px; }

.nav__cta { flex: 0 0 auto; }
.nav__cta .btn { padding: 11px 24px; font-size: .8rem; }

/* 汉堡 */
.burger {
  display: none; width: 46px; height: 46px; padding: 0; flex-direction: column;
  align-items: center; justify-content: center; gap: 5px;
  background: none; border: 1px solid var(--line); border-radius: var(--radius);
}
.burger span {
  display: block; width: 20px; height: 2px; background: var(--brand);
  transition: all .3s var(--ease);
}
.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端抽屉 */
.mnav {
  position: fixed; inset: 0 0 0 auto; width: min(88vw, 380px);
  background: #fff; box-shadow: var(--shadow-lg); z-index: 1200;
  transform: translateX(100%); transition: transform .38s var(--ease);
  overflow-y: auto; padding: 20px 22px 40px;
}
.mnav.is-open { transform: translateX(0); }
.mnav__hd { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.mnav__close {
  width: 40px; height: 40px; font-size: 24px; line-height: 1;
  background: none; border: 1px solid var(--line); border-radius: var(--radius); color: var(--ink);
}
.mnav a { display: block; padding: 13px 4px; color: var(--ink); font-weight: 500; border-bottom: 1px solid var(--line-soft); }
.mnav .mnav__sub { padding-left: 16px; }
.mnav .mnav__sub a { font-size: .88rem; font-weight: 400; color: var(--ink-soft); }
.mnav__foot { margin-top: 22px; }
.mnav__foot .btn { width: 100%; justify-content: center; }
.scrim {
  position: fixed; inset: 0; background: rgba(10, 12, 40, .5); z-index: 1100;
  opacity: 0; visibility: hidden; transition: all .3s var(--ease);
}
.scrim.is-on { opacity: 1; visibility: visible; }

/* ==========================================================================
   Hero 轮播
   ========================================================================== */
.hero { position: relative; height: clamp(460px, 74vh, 660px); overflow: hidden; background: var(--brand-deep); }
.hero__slides { position: absolute; inset: 0; }
.hero__slide {
  position: absolute; inset: 0; opacity: 0; visibility: hidden;
  transition: opacity 1s var(--ease), visibility 1s var(--ease);
}
.hero__slide.is-active { opacity: 1; visibility: visible; }
.hero__img { position: absolute; inset: 0; }
.hero__img img { width: 100%; height: 100%; object-fit: cover; }
.hero__slide::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(115deg, rgba(9, 11, 40, .80) 0%, rgba(28, 35, 100, .60) 45%, rgba(39, 49, 140, .22) 100%);
}
.hero__body {
  position: relative; z-index: 2; height: 100%; display: flex; align-items: center;
  max-width: 1240px; margin: 0 auto; padding: 0 24px;
}
.hero__txt { max-width: 660px; color: #fff; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 9px; margin-bottom: 20px;
  padding: 7px 16px; font-size: .74rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
  border: 1px solid rgba(255, 255, 255, .45); border-radius: 100px; color: #fff;
  backdrop-filter: blur(3px);
}
.hero__badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #4ee1a0; }
.hero h1 {
  color: #fff; font-size: clamp(1.9rem, 5vw, 3.4rem); font-weight: 700;
  line-height: 1.14; margin-bottom: 18px; text-shadow: 0 2px 18px rgba(0, 0, 0, .3);
}
.hero h1 em { font-style: normal; color: #9fb0ff; }
.hero__lead { font-size: clamp(1rem, 1.9vw, 1.2rem); color: rgba(255, 255, 255, .9); margin-bottom: 30px; max-width: 560px; }
.hero__acts { display: flex; flex-wrap: wrap; gap: 13px; }

.hero__dots {
  position: absolute; left: 0; right: 0; bottom: 28px; z-index: 3;
  display: flex; justify-content: center; gap: 11px;
}
.hero__dots button {
  width: 34px; height: 4px; padding: 0; border: 0; border-radius: 2px;
  background: rgba(255, 255, 255, .42); transition: all .3s var(--ease);
}
.hero__dots button.is-active { background: #fff; width: 52px; }
.hero__arrows {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 46px; height: 46px; display: grid; place-items: center; padding: 0;
  background: rgba(255, 255, 255, .14); border: 1px solid rgba(255, 255, 255, .34);
  border-radius: 50%; color: #fff; font-size: 19px; backdrop-filter: blur(4px);
  transition: all .28s var(--ease);
}
.hero__arrows:hover { background: #fff; color: var(--brand); }
.hero__arrows--prev { left: 22px; }
.hero__arrows--next { right: 22px; }

/* ==========================================================================
   数据条
   ========================================================================== */
.stats { background: var(--brand); color: #fff; padding: 46px 0; }
.stats__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.stat { text-align: center; padding: 0 12px; border-right: 1px solid rgba(255, 255, 255, .16); }
.stat:last-child { border-right: 0; }
.stat__n { font-size: clamp(1.9rem, 4vw, 2.7rem); font-weight: 700; line-height: 1.1; }
.stat__n small { font-size: .5em; font-weight: 600; margin-left: 2px; }
.stat__l { margin-top: 6px; font-size: .84rem; letter-spacing: .1em; opacity: .86; }

/* ==========================================================================
   公司介绍区
   ========================================================================== */
.about-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.about-slogan { margin-bottom: 24px; }
.about-slogan img { max-width: 340px; }
.lead { font-size: 1.12rem; color: var(--ink-soft); }
.checks { margin-top: 22px; display: grid; gap: 12px; }
.checks li { display: flex; gap: 12px; align-items: flex-start; }
.checks li::before {
  content: ""; flex: 0 0 auto; width: 20px; height: 20px; margin-top: 4px; border-radius: 50%;
  background: var(--brand) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'><path d='M9 16.2L4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/></svg>") center/13px no-repeat;
}

/* 认证 */
.certs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 20px; }
.cert {
  display: flex; align-items: center; gap: 14px; padding: 14px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  transition: all .3s var(--ease);
}
.cert:hover { border-color: var(--brand); box-shadow: var(--shadow); transform: translateY(-2px); }
.cert img { width: 62px; height: 62px; object-fit: contain; flex: 0 0 auto; }
.cert b { display: block; font-size: .92rem; color: var(--brand); }
.cert span { font-size: .78rem; color: var(--muted); line-height: 1.5; }

/* 徽章墙 */
.badges {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 20px;
  margin-top: 34px; padding-top: 30px; border-top: 1px solid var(--line-soft);
}
.badges img { height: 58px; width: auto; object-fit: contain; filter: grayscale(1); opacity: .58; transition: all .3s var(--ease); }
.badges img:hover { filter: grayscale(0); opacity: 1; }

/* ==========================================================================
   三大入口卡片
   ========================================================================== */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card {
  position: relative; display: block; overflow: hidden;
  border-radius: var(--radius); background: var(--brand-deep); color: #fff;
  min-height: 330px;
}
.card__img { position: absolute; inset: 0; }
.card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.card:hover .card__img img { transform: scale(1.08); }
.card::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(9, 11, 40, .9) 8%, rgba(28, 35, 100, .5) 52%, rgba(39, 49, 140, .2) 100%);
  transition: background .4s var(--ease);
}
.card:hover::after { background: linear-gradient(to top, rgba(9, 11, 40, .94) 12%, rgba(28, 35, 100, .62) 55%, rgba(39, 49, 140, .3) 100%); }
.card__body { position: relative; z-index: 2; display: flex; flex-direction: column; justify-content: flex-end; height: 100%; padding: 30px; min-height: 330px; }
.card__body h3 { color: #fff; font-size: 1.34rem; margin: 0 0 8px; }
.card__body p { color: rgba(255, 255, 255, .84); font-size: .92rem; margin-bottom: 16px; }
.card__more {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .78rem; font-weight: 600; letter-spacing: .13em; text-transform: uppercase; color: #fff;
}
.card:hover .card__more .arw { transform: translateX(5px); }
.card__more .arw { transition: transform .3s var(--ease); }

/* ==========================================================================
   中国代理高亮
   ========================================================================== */
.agent {
  position: relative; overflow: hidden; color: #fff; background: var(--brand-dark);
}
.agent::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 88% 18%, rgba(120, 140, 255, .34), transparent 55%),
    radial-gradient(circle at 8% 82%, rgba(78, 225, 160, .16), transparent 52%);
}
.agent__in { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.agent h2 { color: #fff; }
.agent .sec-title::after { background: #4ee1a0; }
.agent p { color: rgba(255, 255, 255, .88); }
.agent__list { margin-top: 22px; display: grid; gap: 11px; }
.agent__list li { display: flex; gap: 12px; align-items: flex-start; color: rgba(255, 255, 255, .92); font-size: .96rem; }
.agent__list li::before {
  content: ""; flex: 0 0 auto; width: 19px; height: 19px; margin-top: 5px; border-radius: 50%;
  background: #4ee1a0 url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23062c1c'><path d='M9 16.2L4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/></svg>") center/12px no-repeat;
}
.agent-card {
  padding: 30px; border-radius: var(--radius);
  background: rgba(255, 255, 255, .09); border: 1px solid rgba(255, 255, 255, .2);
  backdrop-filter: blur(7px);
}
.agent-card h4 { color: #fff; font-size: 1.12rem; margin-bottom: 4px; }
.agent-card .role { font-size: .76rem; letter-spacing: .16em; text-transform: uppercase; color: #4ee1a0; margin-bottom: 18px; }
.agent-card dl { display: grid; grid-template-columns: auto 1fr; gap: 10px 14px; margin: 0; font-size: .92rem; }
.agent-card dt { color: rgba(255, 255, 255, .62); white-space: nowrap; }
.agent-card dd { margin: 0; color: #fff; font-weight: 500; word-break: break-all; }
.agent-card .btn { margin-top: 22px; width: 100%; justify-content: center; }

/* ==========================================================================
   通用等分网格 / 条目卡
   ========================================================================== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.tile {
  display: flex; flex-direction: column; padding: 30px 26px;
  background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--brand);
  border-radius: var(--radius); transition: all .32s var(--ease);
}
.tile:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--brand); }
.tile__ico {
  display: grid; place-items: center; width: 50px; height: 50px; margin-bottom: 18px;
  border-radius: var(--radius); background: var(--bg-soft); color: var(--brand); font-size: 22px;
}
.tile h3 { font-size: 1.1rem; margin-bottom: 10px; }
.tile p { font-size: .93rem; color: var(--ink-soft); flex: 1; }
.tile__link {
  margin-top: 16px; font-size: .8rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 7px;
}
.tile__link .arw { transition: transform .3s var(--ease); }
.tile:hover .tile__link .arw { transform: translateX(4px); }

/* 简单的名册列表 */
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px; padding: 9px 17px;
  font-size: .9rem; background: #fff; border: 1px solid var(--line); border-radius: 100px;
  color: var(--ink); transition: all .26s var(--ease);
}
.chip:hover { background: var(--brand); border-color: var(--brand); color: #fff; transform: translateY(-2px); }
.chip::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--brand); }
.chip:hover::before { background: #4ee1a0; }

/* ==========================================================================
   产品筛选
   ========================================================================== */
.filters {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; margin-bottom: 38px;
}
.filters button {
  padding: 9px 20px; font-size: .87rem; font-weight: 500;
  background: #fff; border: 1px solid var(--line); border-radius: 100px; color: var(--ink);
  transition: all .26s var(--ease);
}
.filters button:hover { border-color: var(--brand); color: var(--brand); }
.filters button.is-on { background: var(--brand); border-color: var(--brand); color: #fff; }

.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.prod {
  display: flex; flex-direction: column; padding: 26px 24px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  transition: all .32s var(--ease);
}
.prod:hover { border-color: var(--brand); box-shadow: var(--shadow); transform: translateY(-4px); }
.prod__tag {
  align-self: flex-start; margin-bottom: 13px; padding: 4px 12px;
  font-size: .7rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--brand); background: rgba(39, 49, 140, .08); border-radius: 100px;
}
.prod h3 { font-size: 1.06rem; margin-bottom: 10px; }
.prod p { font-size: .9rem; color: var(--ink-soft); margin-bottom: 16px; }
.prod__meta {
  display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: auto; padding-top: 15px;
  border-top: 1px solid var(--line-soft); font-size: .8rem; color: var(--muted);
}
.prod__meta b { color: var(--brand); font-weight: 600; }
.prod.is-hidden { display: none; }

/* ==========================================================================
   页面头图
   ========================================================================== */
.pagehead {
  position: relative; padding: 78px 0 66px; color: #fff; overflow: hidden;
  background: var(--brand-dark) center/cover no-repeat;
}
.pagehead::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(9, 11, 40, .88), rgba(39, 49, 140, .62));
}
.pagehead__in { position: relative; z-index: 2; }
.pagehead h1 { color: #fff; font-size: clamp(1.75rem, 4.4vw, 2.7rem); margin-bottom: 12px; }
.pagehead p { color: rgba(255, 255, 255, .88); max-width: 640px; font-size: 1.05rem; }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; font-size: .82rem; color: rgba(255, 255, 255, .72); }
.crumbs a { color: rgba(255, 255, 255, .82); }
.crumbs a:hover { color: #fff; }

/* ==========================================================================
   锚点章节
   ========================================================================== */
.anchor-sec { padding: 76px 0; border-bottom: 1px solid var(--line-soft); }
.anchor-sec:last-child { border-bottom: 0; }
.anchor-sec.alt { background: var(--bg-soft); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: center; }
.split--rev .split__media { order: -1; }
.split__media { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.split__media img { width: 100%; }
.pillars { display: grid; gap: 16px; margin-top: 24px; }
.pillar { padding: 18px 22px; background: #fff; border-left: 3px solid var(--brand); border-radius: var(--radius); }
.pillar b { display: block; color: var(--brand); margin-bottom: 3px; }
.pillar span { font-size: .9rem; color: var(--ink-soft); }

/* 设备列表 */
.equip { display: grid; grid-template-columns: repeat(2, 1fr); gap: 13px; margin-top: 22px; }
.equip li {
  display: flex; gap: 11px; align-items: flex-start; padding: 13px 16px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); font-size: .92rem;
}
.equip li::before { content: "▸"; color: var(--brand); font-size: .9rem; line-height: 1.7; }

/* ==========================================================================
   联系我们
   ========================================================================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 52px; align-items: start; }
.info-row { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px solid var(--line-soft); }
.info-row:last-of-type { border-bottom: 0; }
.info-row__ico {
  flex: 0 0 auto; display: grid; place-items: center; width: 46px; height: 46px;
  border-radius: 50%; background: var(--bg-soft); color: var(--brand); font-size: 18px;
}
.info-row b { display: block; font-size: .78rem; letter-spacing: .13em; text-transform: uppercase; color: var(--muted); margin-bottom: 3px; }
.info-row p { font-size: 1rem; color: var(--ink); margin: 0; }

.form-card { padding: 36px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.frow { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.field { margin-bottom: 16px; }
.field label { margin-bottom: 7px; font-size: .84rem; font-weight: 600; color: var(--ink); }
.field label i { color: #d13b3b; font-style: normal; }
.field input,
.field select,
.field textarea {
  width: 100%; padding: 12px 14px; font-family: inherit; font-size: .95rem; color: var(--ink);
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  transition: all .26s var(--ease);
}
.field textarea { min-height: 128px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 0; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(39, 49, 140, .11);
}
.field input.err, .field textarea.err { border-color: #d13b3b; }
.err-msg { display: none; margin-top: 6px; font-size: .8rem; color: #d13b3b; }
.err-msg.is-on { display: block; }
.form-note { margin-top: 14px; font-size: .82rem; color: var(--muted); }
.form-ok {
  display: none; margin-top: 16px; padding: 14px 18px; border-radius: var(--radius);
  background: rgba(78, 225, 160, .13); border: 1px solid rgba(78, 225, 160, .45); color: #17694a; font-size: .92rem;
}
.form-ok.is-on { display: block; }

.mapbox {
  height: 320px; margin-top: 18px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: var(--bg-soft) center/cover no-repeat;
}

/* CTA 条 */
.cta-bar {
  padding: 52px 0; text-align: center; color: #fff; background: var(--brand);
}
.cta-bar h2 { color: #fff; margin-bottom: 10px; }
.cta-bar p { color: rgba(255, 255, 255, .88); margin-bottom: 24px; }
.cta-bar .btn { margin: 0 6px; }

/* ==========================================================================
   页脚
   ========================================================================== */
.footer { background: #14162a; color: rgba(255, 255, 255, .68); padding: 62px 0 0; font-size: .92rem; }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; }
.footer h4 { color: #fff; font-size: .96rem; margin-bottom: 18px; letter-spacing: .04em; }
.footer__brand img { height: 40px; margin-bottom: 18px; filter: brightness(0) invert(1); }
.footer__brand p { font-size: .9rem; line-height: 1.8; }
.footer li { margin-bottom: 10px; }
.footer li a { color: rgba(255, 255, 255, .68); font-size: .9rem; }
.footer li a:hover { color: #fff; padding-left: 4px; }
.footer address { font-style: normal; line-height: 1.9; font-size: .9rem; }
.footer address a { color: rgba(255, 255, 255, .68); }
.footer address a:hover { color: #fff; }
.footer__socials { display: flex; gap: 10px; margin-top: 18px; }
.footer__socials a {
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .26); color: #fff; transition: all .28s var(--ease);
}
.footer__socials a:hover { background: var(--brand); border-color: var(--brand); }
.footer__socials svg { width: 15px; height: 15px; fill: currentColor; }
.footer__bar {
  border-top: 1px solid rgba(255, 255, 255, .1); padding: 20px 0;
  display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between;
  font-size: .84rem; color: rgba(255, 255, 255, .5);
}
.footer__bar nav { display: flex; gap: 20px; }
.footer__bar a { color: rgba(255, 255, 255, .5); }
.footer__bar a:hover { color: #fff; }

/* 回到顶部 */
.totop {
  position: fixed; right: 22px; bottom: 22px; z-index: 900;
  width: 46px; height: 46px; display: grid; place-items: center; padding: 0;
  background: var(--brand); color: #fff; border: 0; border-radius: 50%;
  box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all .3s var(--ease);
}
.totop.is-on { opacity: 1; visibility: visible; transform: translateY(0); }
.totop:hover { background: var(--brand-dark); }

/* ==========================================================================
   滚动出现动画
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1080px) {
  .menu { gap: 0; }
  .menu > li > a { padding: 26px 10px; font-size: .87rem; }
  .sub--cols { min-width: 520px; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .stat:nth-child(2) { border-right: 0; }
}

@media (max-width: 960px) {
  .menu, .nav__cta { display: none; }
  .burger { display: flex; }
  .topbar__tag { display: none; }
  .topbar__in { justify-content: flex-end; }
  .about-grid, .agent__in, .split, .contact-grid { grid-template-columns: 1fr; gap: 34px; }
  .split--rev .split__media { order: 0; }
  .cards, .grid-3, .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .sec { padding: 62px 0; }
  .equip { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .wrap { padding: 0 18px; }
  .hero { height: 480px; }
  .hero__arrows { display: none; }
  .cards, .grid-3, .grid-4, .prod-grid, .stats__grid { grid-template-columns: 1fr; }
  .certs { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .frow { grid-template-columns: 1fr; }
  .form-card { padding: 24px; }
  .brand img { height: 34px; }
  .stat { border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, .16); padding-bottom: 18px; }
  .stat:last-child { border-bottom: 0; }
  .topbar__right { gap: 12px; }
  .agent-card { padding: 24px; }
}

@media print {
  .nav, .topbar, .totop, .hero__dots, .hero__arrows { display: none !important; }
}

/* ==========================================================================
   产品系列章节 + 牌号参数表
   ========================================================================== */
.fam { padding: 70px 0; border-bottom: 1px solid var(--line-soft); }
.fam:last-of-type { border-bottom: 0; }
.fam.alt { background: var(--bg-soft); }
.fam.is-hidden { display: none; }
.fam-head { margin-bottom: 30px; }
.fam-head .en {
  display: block; margin-top: 4px; font-size: .8rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--muted); font-weight: 500;
}
.fam-note {
  display: flex; flex-wrap: wrap; gap: 9px; margin-top: 14px;
}
.fam-note span {
  padding: 5px 13px; font-size: .78rem; border-radius: 100px;
  background: rgba(39, 49, 140, .07); color: var(--brand); font-weight: 500;
}

.tbl-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.tbl { width: 100%; border-collapse: collapse; font-size: .92rem; min-width: 640px; }
.tbl th {
  text-align: left; padding: 13px 16px; white-space: nowrap;
  background: var(--brand); color: #fff; font-weight: 600; font-size: .85rem;
}
.tbl td {
  padding: 12px 16px; border-top: 1px solid var(--line-soft);
  vertical-align: top; color: var(--ink);
}
.tbl tbody tr { transition: background .2s var(--ease); }
.tbl tbody tr:hover { background: rgba(39, 49, 140, .045); }
.tbl td:first-child { font-weight: 600; color: var(--brand); white-space: nowrap; }
.tbl td small { display: block; color: var(--muted); font-size: .8rem; font-weight: 400; margin-top: 2px; }
.tbl-wrap + .fam-foot { margin-top: 12px; }
.fam-foot { font-size: .84rem; color: var(--muted); }
.fam-foot a { font-weight: 600; }

/* ==========================================================================
   新闻中心 / 文章页
   ========================================================================== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
  display: flex; flex-direction: column; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.news-card__body { padding: 22px 24px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.news-card__meta { display: flex; gap: 10px; align-items: center; font-size: .8rem; color: var(--muted); }
.news-card__tag {
  padding: 3px 11px; border-radius: 100px; font-size: .74rem; font-weight: 600;
  background: rgba(39, 49, 140, .08); color: var(--brand); white-space: nowrap;
}
.news-card h3 { font-size: 1.08rem; line-height: 1.5; margin: 0; }
.news-card h3 a { color: var(--ink); }
.news-card h3 a:hover { color: var(--brand); }
.news-card p { margin: 0; font-size: .9rem; color: var(--ink-soft); flex: 1; }
.news-card__more { font-size: .86rem; font-weight: 600; color: var(--brand); }
.news-year { margin: 46px 0 20px; font-size: 1.15rem; color: var(--brand); display: flex; align-items: center; gap: 14px; }
.news-year::after { content: ""; flex: 1; height: 1px; background: var(--line-soft); }

.article { max-width: 860px; margin: 0 auto; }
.article__meta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 18px 0 8px; font-size: .85rem; color: var(--muted); }
.article h2 { font-size: 1.35rem; margin: 34px 0 12px; color: var(--brand); }
.article p, .article li { line-height: 1.9; color: var(--ink); }
.article p { margin: 0 0 14px; }
.article ul { padding-left: 22px; margin: 0 0 16px; }
.article .lead { font-size: 1.05rem; color: var(--ink-soft); border-left: 3px solid var(--brand); padding-left: 16px; margin: 22px 0; }
.article .note { font-size: .84rem; color: var(--muted); background: var(--bg-soft); border-radius: var(--radius); padding: 14px 18px; margin: 26px 0; }
.article-foot { margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--line-soft); display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; }
.article-nav { display: flex; gap: 18px; font-size: .9rem; }

@media (max-width: 900px) { .news-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .news-grid { grid-template-columns: 1fr; } }