/* ============================================================
   generic-42 · 通用型企业子站模板
   类前缀：m2-   原型：B 居中文字首屏（安静极简单色）
   配色：白 #FFFFFF / 浅灰 #F4F4F2 / 黑 #111111 / 灰 #8A8A8A
   签名：小字号、680px 超窄栏、超大页边距、发丝线、编号索引表、无卡片
   ============================================================ */

.m2-body {
  --m2-white: #FFFFFF;
  --m2-tint: #F4F4F2;
  --m2-ink: #111111;
  --m2-gray: #8A8A8A;
  --m2-soft: #6E6E6E;
  --m2-line: #E4E4E1;
  --m2-line-dark: #C9C9C5;
  --m2-serif: Georgia, "Songti SC", "SimSun", serif;
  --m2-sans: "PingFang SC", "Helvetica Neue", "Microsoft YaHei", Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
.m2-body {
  font-family: var(--m2-sans);
  font-size: 13.5px;
  color: var(--m2-ink);
  background: var(--m2-white);
  line-height: 1.95;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}
.m2-body img { max-width: 100%; height: auto; border: 0; }
.m2-body a { color: inherit; text-decoration: none; }
.m2-body ul { list-style: none; margin: 0; padding: 0; }
.m2-wrap { width: 100%; max-width: 724px; margin: 0 auto; padding: 0 32px; }
.m2-hide { display: none !important; }
.m2-noscroll { overflow: hidden; }

/* ---------- 区块 ---------- */
.m2-sec { padding: 104px 0; }
.m2-sec--tint { background: var(--m2-tint); }
.m2-sechead { display: flex; align-items: baseline; gap: 14px; margin-bottom: 26px; }
.m2-secno { flex: 0 0 auto; font-family: var(--m2-serif); font-style: italic; font-size: 11px; color: var(--m2-gray); letter-spacing: 1px; }
.m2-h2 { margin: 0; font-size: 15px; font-weight: 600; letter-spacing: 2px; color: var(--m2-ink); }
.m2-sechead__line { flex: 1 1 auto; height: 1px; background: var(--m2-line); transform: translateY(-4px); }
.m2-sechead__link { margin-left: auto; font-size: 11px; letter-spacing: 1px; color: var(--m2-gray); }
.m2-sechead__link:hover { color: var(--m2-ink); }
.m2-link { display: inline-block; margin-top: 18px; font-size: 12px; letter-spacing: .5px; color: var(--m2-ink); border-bottom: 1px solid var(--m2-ink); padding-bottom: 1px; }
.m2-link:hover { color: var(--m2-gray); border-color: var(--m2-gray); }

/* ---------- 顶栏 ---------- */
.m2-head { border-bottom: 1px solid var(--m2-line); background: var(--m2-white); }
.m2-head__in { max-width: 1120px; margin: 0 auto; padding: 22px 32px; display: flex; align-items: center; gap: 24px; }
.m2-brand { display: flex; align-items: center; gap: 14px; flex: 0 0 auto; }
.m2-brand__logo { display: block; }
.m2-brand__img { height: 34px; width: auto; display: block; filter: grayscale(1); }
.m2-brand__title { display: flex; flex-direction: column; }
.m2-brand__name { font-size: 15px; font-weight: 500; letter-spacing: 2px; line-height: 1.5; color: var(--m2-ink); }
.m2-brand__meta { font-size: 10px; letter-spacing: .5px; color: var(--m2-gray); }
.m2-brand__meta b { font-weight: 400; color: var(--m2-soft); }
.m2-nav { margin-left: auto; display: flex; align-items: center; gap: 22px; flex-wrap: wrap; justify-content: flex-end; }
.m2-nav__item { position: relative; font-size: 12px; letter-spacing: .5px; color: var(--m2-soft); padding: 2px 0; }
.m2-nav__item::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1px; background: transparent; }
.m2-nav__item:hover { color: var(--m2-ink); }
.m2-nav__item:hover::after, .m2-nav__on::after { background: var(--m2-ink); }
.m2-nav__on { color: var(--m2-ink); }
.m2-burger { display: none; margin-left: auto; padding: 6px 4px; border: 0; background: none; cursor: pointer; }
.m2-burger span { display: block; width: 20px; height: 1px; margin: 5px 0; background: var(--m2-ink); }

/* ---------- 抽屉 ---------- */
.m2-drawer { display: none; position: fixed; inset: 0 0 0 auto; width: 78%; max-width: 320px; background: #fff; z-index: 220; padding: 26px 22px; overflow-y: auto; border-left: 1px solid var(--m2-line); box-shadow: -20px 0 60px rgba(0, 0, 0, .10); }
.m2-drawer--open { display: block; }
.m2-drawer__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.m2-drawer__name { font-size: 13px; letter-spacing: 2px; }
.m2-drawer__close { border: 0; background: none; font-size: 22px; line-height: 1; cursor: pointer; color: var(--m2-gray); }
.m2-drawer__item { display: block; padding: 12px 0; border-bottom: 1px solid var(--m2-line); font-size: 13px; }
.m2-drawer__on { font-weight: 600; }
.m2-drawer__tel { display: inline-block; margin-top: 24px; font-size: 12px; border-bottom: 1px solid var(--m2-ink); }

/* ---------- Hero ---------- */
.m2-hero { padding: 148px 0 118px; text-align: center; border-bottom: 1px solid var(--m2-line); }
.m2-hero__kicker { margin: 0 0 30px; font-size: 10px; letter-spacing: 4px; text-transform: uppercase; color: var(--m2-gray); }
.m2-hero__h1 { margin: 0; font-size: 33px; line-height: 1.45; font-weight: 300; letter-spacing: 3px; color: var(--m2-ink); }
.m2-hero__h1sub { display: block; margin-top: 8px; font-family: var(--m2-serif); font-style: normal; font-size: 14px; letter-spacing: 4px; color: var(--m2-gray); }
.m2-hero__lead { margin: 26px auto 0; max-width: 420px; font-size: 12px; line-height: 2.1; color: var(--m2-gray); }
.m2-hero__tel { margin: 24px 0 0; font-size: 12px; letter-spacing: 1px; }
.m2-hero__tel a { border-bottom: 1px solid var(--m2-ink); padding-bottom: 2px; }
.m2-hero__tel a:hover { color: var(--m2-gray); border-color: var(--m2-gray); }

/* ---------- 简介 ---------- */
.m2-about__full {
  font-size: 13px; line-height: 2.15; color: var(--m2-soft); max-height: 220px; overflow: hidden; position: relative;
  -webkit-mask-image: linear-gradient(180deg, #000 78%, transparent);
  mask-image: linear-gradient(180deg, #000 78%, transparent);
}
.m2-about__full--open { max-height: none; -webkit-mask-image: none; mask-image: none; }
.m2-about__full p { margin: 0 0 12px; }
.m2-about__full img { display: none; }
.m2-about__toggle { margin: 8px 0 0; }
.m2-about__btn { display: inline-flex; align-items: center; gap: 6px; padding: 2px 0; border: 0; background: none; color: var(--m2-gray); font-size: 11px; letter-spacing: 1px; cursor: pointer; }
.m2-about__btn:hover { color: var(--m2-ink); }

/* ---------- 广告图（窄幅居中画框） ---------- */
.m2-ad__fig { margin: 0; max-width: 520px; margin-left: auto; margin-right: auto; text-align: center; }
.m2-ad__img { display: block; width: 100%; border: 1px solid var(--m2-line-dark); padding: 8px; background: #fff; }
.m2-ad__cap { margin-top: 14px; font-size: 10px; letter-spacing: 2px; color: var(--m2-gray); }

/* ---------- 通用索引表 ---------- */
.m2-index { border-top: 1px solid var(--m2-line); }
.m2-index__row { display: grid; grid-template-columns: 44px 1fr 1.3fr; gap: 18px; align-items: baseline; padding: 16px 0; border-bottom: 1px solid var(--m2-line); }
.m2-index__no { font-family: var(--m2-serif); font-style: italic; font-size: 11px; color: var(--m2-gray); }
.m2-index__name { font-size: 13.5px; font-weight: 500; color: var(--m2-ink); letter-spacing: .5px; }
.m2-index__desc { font-size: 12px; line-height: 1.9; color: var(--m2-gray); }

/* ---------- 产品索引 ---------- */
.m2-prod { border-top: 1px solid var(--m2-line); }
.m2-prod__row { display: grid; grid-template-columns: 34px 74px 1fr auto; gap: 16px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--m2-line); transition: padding .2s ease; }
.m2-prod__row:hover { padding-left: 4px; }
.m2-prod__no { font-family: var(--m2-serif); font-style: italic; font-size: 11px; color: var(--m2-gray); }
.m2-prod__thumb { display: block; width: 74px; height: 50px; overflow: hidden; border: 1px solid var(--m2-line); background: var(--m2-tint); }
.m2-prod__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; filter: grayscale(.15); transition: filter .3s; }
.m2-prod__row:hover .m2-prod__thumb img { filter: grayscale(0); }
.m2-prod__name { font-size: 13px; color: var(--m2-ink); letter-spacing: .5px; }
.m2-prod__arr { font-size: 12px; color: var(--m2-gray); }

/* ---------- 承诺 / 应用 ---------- */
.m2-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.m2-list { border-top: 1px solid var(--m2-line-dark); }
.m2-list__item { padding: 12px 0; border-bottom: 1px solid var(--m2-line); font-size: 12.5px; color: var(--m2-soft); }

/* ---------- 新闻索引 ---------- */
.m2-news { border-top: 1px solid var(--m2-line); }
.m2-news__row { display: grid; grid-template-columns: 96px 1fr auto; gap: 16px; align-items: baseline; padding: 14px 0; border-bottom: 1px solid var(--m2-line); }
.m2-news__date { font-family: var(--m2-serif); font-size: 11px; letter-spacing: 1px; color: var(--m2-gray); }
.m2-news__title { font-size: 13px; color: var(--m2-ink); letter-spacing: .3px; }
.m2-news__row:hover .m2-news__title { color: var(--m2-gray); }
.m2-news__arr { font-size: 11px; color: var(--m2-gray); }

/* ---------- FAQ ---------- */
.m2-faq { border-top: 1px solid var(--m2-line); }
.m2-faq__item { border-bottom: 1px solid var(--m2-line); }
.m2-faq__item summary { position: relative; cursor: pointer; list-style: none; padding: 15px 26px 15px 0; font-size: 12.5px; font-weight: 500; letter-spacing: .3px; color: var(--m2-ink); }
.m2-faq__item summary::-webkit-details-marker { display: none; }
.m2-faq__item summary::after { content: "+"; position: absolute; right: 2px; top: 13px; font-size: 14px; color: var(--m2-gray); }
.m2-faq__item[open] summary::after { content: "–"; }
.m2-faq__item p { margin: 0 0 16px; padding-right: 20px; font-size: 12px; line-height: 2; color: var(--m2-gray); }

/* ---------- 分站索引 ---------- */
.m2-city__lead { margin: 0 0 18px; font-size: 11px; letter-spacing: 1px; color: var(--m2-gray); }
.m2-city { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 26px; border-top: 1px solid var(--m2-line-dark); }
.m2-city__item { display: flex; flex-direction: column; gap: 1px; padding: 12px 0; border-bottom: 1px solid var(--m2-line); }
.m2-city__item:hover .m2-city__region { color: var(--m2-gray); }
.m2-city__region { font-size: 12.5px; color: var(--m2-ink); letter-spacing: .5px; }
.m2-city__site { font-size: 9.5px; color: var(--m2-gray); }
.m2-city__item--fold { display: none; }
.m2-city.m2-city--open .m2-city__item--fold { display: flex; }
.m2-city__more { display: inline-block; margin-top: 20px; padding: 0 0 2px; border: 0; border-bottom: 1px solid var(--m2-ink); background: none; font-size: 11px; letter-spacing: 1px; color: var(--m2-ink); cursor: pointer; }

/* ---------- 关联企业 ---------- */
.m2-partners { display: grid; grid-template-columns: 1fr 1fr; gap: 0 30px; border-top: 1px solid var(--m2-line-dark); }
.m2-partners__item { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--m2-line); }
.m2-partners__name { font-size: 12.5px; color: var(--m2-ink); }
.m2-partners__region { font-size: 10px; color: var(--m2-gray); }
.m2-partners__item:hover .m2-partners__name { color: var(--m2-gray); }

/* ---------- CTA ---------- */
.m2-cta { padding: 128px 0 132px; text-align: center; border-top: 1px solid var(--m2-line); }
.m2-cta__kicker { margin: 0 0 20px; font-size: 9px; letter-spacing: 4px; color: var(--m2-gray); }
.m2-cta__title { margin: 0; font-size: 18px; font-weight: 300; letter-spacing: 2px; color: var(--m2-ink); }
.m2-cta__lead { margin: 10px 0 26px; font-size: 11.5px; color: var(--m2-gray); }
.m2-cta__tel { display: inline-block; font-size: 25px; font-weight: 300; letter-spacing: 3px; color: var(--m2-ink); border-bottom: 1px solid var(--m2-ink); padding-bottom: 4px; }
.m2-cta__tel:hover { color: var(--m2-gray); border-color: var(--m2-gray); }

/* ---------- 页脚 ---------- */
.m2-foot { border-top: 1px solid var(--m2-line); padding-top: 56px; font-size: 11.5px; color: var(--m2-gray); }
.m2-foot__main { display: grid; grid-template-columns: 1.4fr .8fr 1fr; gap: 34px; max-width: 1120px; margin: 0 auto; padding: 0 32px 34px; }
.m2-foot__name { font-size: 13px; letter-spacing: 2px; color: var(--m2-ink); margin-bottom: 8px; }
.m2-foot__desc { margin: 0 0 8px; }
.m2-foot__tel a { font-size: 15px; color: var(--m2-ink); border-bottom: 1px solid var(--m2-line-dark); }
.m2-foot__tt { margin-bottom: 8px; font-size: 10px; letter-spacing: 2px; color: var(--m2-soft); }
.m2-foot__nav a { display: block; padding: 3px 0; }
.m2-foot__nav a:hover { color: var(--m2-ink); }
.m2-foot__info p { margin: 0 0 4px; }
.m2-foot__city { max-width: 1120px; margin: 0 auto; padding: 16px 32px; border-top: 1px solid var(--m2-line); }
.m2-foot__citytt { margin-right: 10px; font-size: 10px; letter-spacing: 2px; color: var(--m2-soft); }
.m2-foot__citylist { display: inline; }
.m2-foot__cityitem { display: inline-block; margin: 0 12px 4px 0; color: var(--m2-gray); }
.m2-foot__cityitem:hover { color: var(--m2-ink); }
.m2-foot__cityitem--fold { display: none; }
.m2-foot__citylist--open .m2-foot__cityitem--fold { display: inline-block; }
.m2-foot__morebtn { border: 0; background: none; padding: 0 0 1px; border-bottom: 1px solid var(--m2-line-dark); color: var(--m2-soft); font-size: 10px; cursor: pointer; }
.m2-foot__nap { max-width: 1120px; margin: 0 auto; padding: 14px 32px; border-top: 1px solid var(--m2-line); color: #A2A2A2; font-size: 10.5px; line-height: 1.8; }
.m2-foot__nap p { margin: 0 0 4px; }
.m2-foot__copy { max-width: 1120px; margin: 0 auto; padding: 14px 32px 26px; border-top: 1px solid var(--m2-line); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: 10px; color: #A2A2A2; letter-spacing: .5px; }
.m2-foot__copy a { color: #A2A2A2; }
.m2-foot__copy a:hover { color: var(--m2-ink); }

/* ---------- 拨号 ---------- */
.m2-dial { display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 100; padding: 10px 14px; background: rgba(255, 255, 255, .97); border-top: 1px solid var(--m2-line); }
.m2-dial__tel { display: block; text-align: center; padding: 10px; border: 1px solid var(--m2-ink); font-size: 12px; letter-spacing: 2px; color: var(--m2-ink); }

/* ---------- 内页页头 ---------- */
.m2-pagehero { padding: 92px 0 54px; border-bottom: 1px solid var(--m2-line); }
.m2-crumb { margin: 0 0 30px; font-size: 10px; letter-spacing: 2px; color: var(--m2-gray); }
.m2-crumb a { color: var(--m2-soft); }
.m2-crumb a:hover { color: var(--m2-ink); }
.m2-pageh1 { margin: 0; font-size: 28px; font-weight: 300; letter-spacing: 2px; line-height: 1.5; color: var(--m2-ink); }
.m2-pagehero__sub { margin: 12px 0 0; font-size: 11px; letter-spacing: 1px; color: var(--m2-gray); }

/* ---------- 内页通用 ---------- */
.m2-pagebody { padding: 76px 0 96px; }
.m2-pagebody .m2-wrap { max-width: 724px; }
.m2-narrow { max-width: 620px; margin: 0 auto; }
.m2-rich { font-size: 13px; line-height: 2.15; color: var(--m2-soft); }
.m2-rich p { margin: 0 0 14px; }
.m2-rich img { border: 1px solid var(--m2-line); }
.m2-h2page { margin: 0 0 20px; font-size: 15px; font-weight: 600; letter-spacing: 2px; }
.m2-h2page--sub { margin-top: 46px; }
.m2-aboutpage__media { margin-top: 40px; max-width: 320px; }
.m2-aboutpage__media img { display: block; width: 100%; border: 1px solid var(--m2-line); padding: 6px; filter: grayscale(.12); }
.m2-contact { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; }
.m2-info { border-top: 1px solid var(--m2-line-dark); }
.m2-info__row { display: flex; gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--m2-line); font-size: 12.5px; }
.m2-info__k { flex: 0 0 76px; color: var(--m2-gray); }
.m2-info__v { flex: 1 1 auto; color: var(--m2-ink); }
.m2-steps { margin: 0; padding: 0; counter-reset: m2step; border-top: 1px solid var(--m2-line-dark); }
.m2-steps li { list-style: none; counter-increment: m2step; position: relative; padding: 12px 0 12px 34px; border-bottom: 1px solid var(--m2-line); font-size: 12.5px; color: var(--m2-soft); }
.m2-steps li::before { content: counter(m2step, decimal-leading-zero); position: absolute; left: 0; top: 12px; font-family: var(--m2-serif); font-style: italic; font-size: 10px; color: var(--m2-gray); }
.m2-contact .m2-link { margin-top: 22px; }

/* 列表 */
.m2-listpage { border-top: 1px solid var(--m2-line-dark); }
.m2-listpage__item { display: grid; grid-template-columns: 112px 1fr auto; gap: 22px; align-items: center; padding: 18px 0; border-bottom: 1px solid var(--m2-line); }
.m2-listpage__item--noimg { grid-template-columns: 1fr auto; }
.m2-listpage__thumb { display: block; width: 112px; height: 76px; overflow: hidden; background: var(--m2-tint); border: 1px solid var(--m2-line); }
.m2-listpage__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; filter: grayscale(.15); transition: filter .3s; }
.m2-listpage__item:hover .m2-listpage__thumb img { filter: grayscale(0); }
.m2-listpage__title { display: block; margin-bottom: 4px; font-size: 13.5px; font-weight: 500; letter-spacing: .3px; color: var(--m2-ink); }
.m2-listpage__item:hover .m2-listpage__title { color: var(--m2-gray); }
.m2-listpage__desc { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font-size: 11.5px; line-height: 1.9; color: var(--m2-gray); }
.m2-listpage__date { font-family: var(--m2-serif); font-size: 10px; letter-spacing: 1px; color: var(--m2-gray); }
.m2-region { display: inline-block; margin-right: 8px; padding: 0 6px; border: 1px solid var(--m2-line-dark); font-style: normal; font-size: 9.5px; letter-spacing: 1px; color: var(--m2-gray); vertical-align: 1px; }
.m2-empty { padding: 26px 0; font-size: 12px; color: var(--m2-gray); }

/* 分页 */
.pagination { margin: 36px 0 0; text-align: center; font-size: 11px; }
.pagination a, .pagination span { display: inline-block; min-width: 30px; padding: 4px 8px; margin: 0 2px; border: 1px solid var(--m2-line); color: var(--m2-soft); }
.pagination a:hover { border-color: var(--m2-ink); color: var(--m2-ink); }
.pagination .current { background: var(--m2-ink); border-color: var(--m2-ink); color: #fff; }

/* ---------- 新闻详情 ---------- */
.m2-newsdetail { display: grid; grid-template-columns: minmax(0, 1fr) 208px; gap: 48px; align-items: start; }
.m2-article__meta { margin-bottom: 26px; font-size: 10px; letter-spacing: 2px; color: var(--m2-gray); }
.m2-article__cover { display: block; width: 100%; border: 1px solid var(--m2-line); margin-bottom: 26px; }
.m2-article__body { font-size: 13px; line-height: 2.15; color: var(--m2-soft); }
.m2-article__body p { margin: 0 0 14px; }
.m2-article__body img { border: 1px solid var(--m2-line); }
.m2-article__back { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 38px; padding-top: 18px; border-top: 1px solid var(--m2-line); }
.m2-side { border-left: 1px solid var(--m2-line); padding-left: 22px; }
.m2-side__tt { margin: 0 0 14px; font-size: 10px; letter-spacing: 2px; font-weight: 500; color: var(--m2-soft); }
.m2-side__item { display: block; padding: 9px 0; border-bottom: 1px solid var(--m2-line); }
.m2-side__item:last-of-type { border-bottom: 0; }
.m2-side__title { display: block; font-size: 11.5px; line-height: 1.7; color: var(--m2-ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.m2-side__item:hover .m2-side__title { color: var(--m2-gray); }
.m2-side__date { display: block; font-family: var(--m2-serif); font-size: 9.5px; color: var(--m2-gray); }
.m2-side__empty { margin: 0 0 10px; font-size: 11px; color: var(--m2-gray); }
.m2-side__more { margin-top: 16px; }

/* ---------- 产品详情 ---------- */
.m2-prodhero { display: grid; grid-template-columns: .9fr 1.1fr; gap: 46px; align-items: start; }
.m2-prodhero__media { border: 1px solid var(--m2-line); padding: 7px; background: #fff; }
.m2-prodhero__media img { display: block; width: 100%; filter: grayscale(.1); }
.m2-prodhero__kicker { display: inline-block; margin-bottom: 12px; font-size: 9px; letter-spacing: 3px; text-transform: uppercase; color: var(--m2-gray); }
.m2-prodhero__h1 { margin: 0 0 16px; font-size: 24px; font-weight: 300; letter-spacing: 1.5px; line-height: 1.55; color: var(--m2-ink); }
.m2-prodhero__desc { margin: 0 0 22px; font-size: 12px; line-height: 2.05; color: var(--m2-gray); }
.m2-prodhero__btns { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 24px; }
.m2-prodhero__btns .m2-link { margin-top: 0; }
.m2-prodshow { display: grid; grid-template-columns: minmax(0, 1fr) 208px; gap: 48px; align-items: start; margin-top: 64px; padding-top: 40px; border-top: 1px solid var(--m2-line); }
.m2-prodshow__main { font-size: 13px; line-height: 2.15; color: var(--m2-soft); }
.m2-prodshow__main p { margin: 0 0 14px; }
.m2-panel { padding: 18px 0; border-top: 1px solid var(--m2-line-dark); }
.m2-panel:first-child { border-top: 0; padding-top: 0; }
.m2-panel__tt { margin: 0 0 10px; font-size: 10px; letter-spacing: 2px; font-weight: 500; color: var(--m2-soft); }
.m2-panel p { margin: 0 0 4px; font-size: 11px; line-height: 1.9; color: var(--m2-gray); }
.m2-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.m2-chip { display: inline-block; padding: 2px 8px; border: 1px solid var(--m2-line); font-size: 10px; color: var(--m2-soft); }
.m2-crumb--dark { color: var(--m2-gray); margin: 0 0 34px; font-size: 10px; letter-spacing: 2px; }
.m2-crumb--dark a { color: var(--m2-soft); }
.m2-crumb--dark a:hover { color: var(--m2-ink); }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .m2-nav { display: none; }
  .m2-burger { display: block; }
  .m2-hero { padding: 100px 0 84px; }
  .m2-sec { padding: 76px 0; }
  .m2-cols, .m2-contact, .m2-newsdetail, .m2-prodshow, .m2-prodhero { grid-template-columns: 1fr; gap: 34px; }
  .m2-side { border-left: 0; padding-left: 0; border-top: 1px solid var(--m2-line); padding-top: 20px; }
  .m2-foot__main { grid-template-columns: 1fr; gap: 22px; }
  .m2-prodhero__media { order: -1; max-width: 420px; }
  .m2-cta { padding: 90px 0; }
}
@media (max-width: 640px) {
  .m2-body { font-size: 13px; }
  .m2-wrap { padding: 0 22px; }
  .m2-head__in { padding: 16px 22px; }
  .m2-brand__img { height: 28px; }
  .m2-brand__name { font-size: 13px; }
  .m2-hero { padding: 78px 0 66px; }
  .m2-hero__h1 { font-size: 26px; }
  .m2-hero__h1sub { font-size: 12px; }
  .m2-index__row { grid-template-columns: 32px 1fr; gap: 10px; }
  .m2-index__desc { grid-column: 2; }
  .m2-prod__row { grid-template-columns: 28px 60px 1fr auto; gap: 10px; }
  .m2-prod__thumb { width: 60px; height: 42px; }
  .m2-news__row { grid-template-columns: 78px 1fr; }
  .m2-news__arr { display: none; }
  .m2-city { grid-template-columns: 1fr 1fr; }
  .m2-partners { grid-template-columns: 1fr; }
  .m2-listpage__item { grid-template-columns: 84px 1fr; gap: 14px; }
  .m2-listpage__item--noimg { grid-template-columns: 1fr auto; }
  .m2-listpage__thumb { width: 84px; height: 60px; }
  .m2-listpage__date { grid-column: 2; }
  .m2-pageh1 { font-size: 22px; }
  .m2-pagebody { padding: 52px 0 74px; }
  .m2-cta__tel { font-size: 22px; }
  .m2-dial { display: block; }
  .m2-body { padding-bottom: 64px; }
}