@charset "utf-8";
/* ============================================================
   周老幺汽车脚垫工厂 · 站点主样式（静奢工业 / Premium Industrial）
   v2.0  替换原 style.css
   设计语言：深海军蓝 + 象牙白 + 黄铜点缀，2px 圆角，发丝分隔线
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

:root {
  --ink: #0E1116;
  --navy: #0A2540;
  --navy-2: #0D2E4F;
  --brand: #0B4FC4;
  --brand-2: #2E6BFF;
  --brass: #B08A5A;
  --brass-2: #C9A876;
  --ivory: #F7F5F1;
  --paper: #FFFFFF;
  --muted: #5B6570;
  --muted-2: #8A93A0;
  --line: rgba(14, 17, 22, .10);
  --line-2: rgba(14, 17, 22, .18);
  --line-dark: rgba(255, 255, 255, .14);
  --r: 2px;
  --max: 1240px;
  --pad: clamp(18px, 4vw, 40px);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { display: block; max-width: 100%; border: 0; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 600; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
input, textarea, button, select { font-family: inherit; font-size: inherit; }
table { border-collapse: collapse; }

/* 旧的浮动/清除工具类，供富文本与遗留结构使用 */
.clear { clear: both; }
.clearfix::after { content: ""; display: block; clear: both; }
.fl { float: left; }
.fr { float: right; }
.tac { text-align: center; }
.text-secondary { color: var(--muted); }
.hidden-sm { display: inline-block; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--pad); }
.wrap-narrow { max-width: 900px; margin: 0 auto; padding: 0 var(--pad); }

/* 仅供搜索引擎与读屏使用的隐藏标题 */
.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.eyebrow {
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--brass);
  font-weight: 600;
}

/* 通用按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: var(--r);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  cursor: pointer;
  transition: background .25s ease, color .25s ease, border-color .25s ease;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--brand); }
.btn-ghost { border-color: var(--line-2); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-white { background: #fff; color: var(--navy); }
.btn-white:hover { background: var(--brass); color: #fff; }
.btn-outline { border-color: rgba(255, 255, 255, .42); color: #fff; }
.btn-outline:hover { border-color: #fff; background: rgba(255, 255, 255, .08); }
.btn-block { width: 100%; }

/* ============================================================
   顶部信息条
   ============================================================ */
.topbar {
  background: var(--ivory);
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}
.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 38px;
  gap: 20px;
}
.topbar-l { display: flex; align-items: center; gap: 22px; }
.topbar-r { display: flex; align-items: center; gap: 20px; }
.topbar .hot { color: var(--navy); font-weight: 600; }
.topbar a { transition: color .2s; }
.topbar a:hover { color: var(--navy); }
.topbar .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--brass); display: inline-block; }

/* ============================================================
   主头部
   ============================================================ */
.hd {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.hd .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 84px;
}
.hd-logo a { display: block; }
.hd-logo img { height: 48px; width: auto; }

.hd-nav { display: flex; align-items: center; gap: 27px; font-size: 14.5px; }
.hd-nav > li { position: relative; }
.hd-nav > li > a {
  position: relative;
  display: block;
  padding: 8px 0;
  color: #2A313A;
  white-space: nowrap;
  transition: color .2s;
}
.hd-nav > li > a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--brand);
  transition: width .28s ease;
}
.hd-nav > li:hover > a,
.hd-nav > li.cur > a { color: var(--navy); }
.hd-nav > li:hover > a::after,
.hd-nav > li.cur > a::after { width: 100%; }

/* 二级菜单 */
.hd-nav dd {
  margin: 0;
  position: absolute;
  left: -18px;
  top: 100%;
  min-width: 168px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px -22px rgba(10, 37, 64, .35);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: all .24s ease;
}
.hd-nav > li:hover dd { opacity: 1; visibility: visible; transform: none; }
.hd-nav dd a {
  display: block;
  padding: 9px 18px;
  font-size: 14px;
  color: var(--muted);
  white-space: nowrap;
}
.hd-nav dd a:hover { background: var(--ivory); color: var(--navy); }

.hd-right { display: flex; align-items: center; gap: 20px; }
.hd-phone { text-align: right; line-height: 1.3; }
.hd-phone small { display: block; font-size: 10px; letter-spacing: .16em; color: var(--muted-2); }
.hd-phone b { font-size: 17px; font-weight: 600; color: var(--navy); letter-spacing: .02em; }

/* 移动端汉堡 */
.nav-cb { display: none; }
.nav-label { display: none; }

/* ============================================================
   首页 Hero（单图，不用轮播）
   ============================================================ */
.hero { position: relative; background: #121820; }
.hero-media { position: relative; width: 100%; height: clamp(460px, 62vh, 660px); overflow: hidden; }
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(6, 12, 20, .80) 0%, rgba(6, 12, 20, .52) 42%, rgba(6, 12, 20, .10) 72%);
}
.hero-copy {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  z-index: 2;
  pointer-events: none;
}
.hero-copy a,
.hero-copy .btn { pointer-events: auto; }
.hero-copy .wrap { width: 100%; }
.hero-copy .eyebrow { color: var(--brass-2); }
.hero-copy h1,
.hero-copy .h1 {
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.14;
  letter-spacing: -.025em;
  color: #fff;
  font-weight: 600;
  margin: 14px 0 20px;
  max-width: 620px;
}
.hero-copy h1 em, .hero-copy .h1 em { font-style: normal; color: var(--brass-2); }
.hero-copy .lead {
  font-size: 15.5px;
  line-height: 1.95;
  color: rgba(255, 255, 255, .78);
  max-width: 480px;
  margin-bottom: 30px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 34px;
  justify-content: start;
  border-top: 1px solid rgba(255, 255, 255, .18);
  padding-top: 22px;
  max-width: 560px;
}
.hero-stats b {
  display: block;
  font-size: 26px;
  font-weight: 600;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -.01em;
}
.hero-stats b i { font-style: normal; font-size: 13px; color: var(--brass-2); margin-left: 3px; }
.hero-stats span { font-size: 12px; color: rgba(255, 255, 255, .58); }

/* ============================================================
   信任数据条
   ============================================================ */
.trust { background: var(--paper); border-bottom: 1px solid var(--line); }
.trust .wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding-top: 34px;
  padding-bottom: 34px;
}
.trust-item { text-align: center; padding: 0 12px; border-right: 1px solid var(--line); }
.trust-item:last-child { border-right: 0; }
.trust-item b {
  display: block;
  font-size: 30px;
  font-weight: 600;
  color: var(--navy);
  line-height: 1.15;
  letter-spacing: -.01em;
}
.trust-item b i { font-style: normal; font-size: 13px; color: var(--brass); margin-left: 4px; }
.trust-item span { display: block; font-size: 12.5px; color: var(--muted); margin-top: 6px; }

/* ============================================================
   通用区块
   ============================================================ */
.sec { padding: clamp(64px, 8vw, 108px) 0; }
.sec-ivory { background: var(--ivory); }
.sec-paper { background: var(--paper); }
.sec-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 36px;
  margin-bottom: 42px;
}
.sec-head .sec-tit { min-width: 0; }
.sec-head h2 {
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.18;
  letter-spacing: -.02em;
  margin: 12px 0 0;
}
.sec-head h2 em { font-style: normal; color: var(--brand); }
.sec-head p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
  max-width: 540px;
}
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
  border-bottom: 1px solid var(--brass);
  padding-bottom: 4px;
  white-space: nowrap;
  transition: gap .25s ease, color .2s;
}
.link-more:hover { gap: 14px; color: var(--brand); }

/* ============================================================
   产品卡片
   ============================================================ */
.tabs {
  display: flex;
  gap: 30px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tabs a {
  position: relative;
  padding: 0 0 14px;
  font-size: 15px;
  color: var(--muted);
  white-space: nowrap;
  transition: color .2s;
}
.tabs a:hover { color: var(--ink); }
.tabs a.on { color: var(--ink); font-weight: 600; }
.tabs a.on::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--brass);
}

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

/* 产品分类切换面板 */
.prod-tabs { margin-top: 4px; }
.panes { position: relative; }
.pane { display: none; }
.pane.on { display: block; }

.card {
  display: block;
  background: var(--paper);
  border: 1px solid var(--line);
  transition: border-color .35s ease, box-shadow .35s ease, transform .35s cubic-bezier(.2, .7, .3, 1);
}
.card:hover {
  border-color: rgba(11, 79, 196, .38);
  box-shadow: 0 22px 46px -26px rgba(10, 37, 64, .38);
  transform: translateY(-3px);
}
.card-media { aspect-ratio: 4 / 3; overflow: hidden; background: #EDEBE7; }
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .65s cubic-bezier(.2, .7, .3, 1);
}
.card:hover .card-media img { transform: scale(1.045); }
.card-body { padding: 20px 20px 22px; }
.card-body .kicker {
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--brass);
  font-weight: 600;
}
.card-body h3 {
  font-size: 17.5px;
  margin: 8px 0 6px;
  letter-spacing: -.01em;
  line-height: 1.5;
}
.card-body h3 a { display: block; }
.card-body p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
  margin: 0 0 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-body .go {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--navy);
  transition: color .2s;
}
.card:hover .card-body .go { color: var(--brand); }

/* ============================================================
   精工四艺 / 优势
   ============================================================ */
.craft-grid {
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.craft-media { position: relative; }
.craft-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.craft-media .frame {
  position: absolute;
  inset: 16px -16px -16px 16px;
  border: 1px solid var(--brass);
  z-index: -1;
}
.craft-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.craft-item:first-child { border-top: 1px solid var(--line); }
.craft-item .num {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--brass);
  padding-top: 5px;
}
.craft-item h3 { font-size: 16.5px; margin: 0 0 5px; }
.craft-item p { font-size: 13.5px; color: var(--muted); line-height: 1.8; margin: 0; }

/* ============================================================
   工厂实力（深色块）
   ============================================================ */
.factory { background: var(--navy); color: #fff; position: relative; overflow: hidden; }
.factory::before {
  content: "";
  position: absolute;
  right: -140px;
  top: -140px;
  width: 460px;
  height: 460px;
  border: 1px solid rgba(201, 168, 118, .18);
  border-radius: 50%;
  pointer-events: none;
}
.factory-grid {
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  gap: clamp(32px, 5vw, 68px);
  align-items: center;
  position: relative;
}
.factory .eyebrow { color: var(--brass-2); }
.factory h2 {
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.18;
  letter-spacing: -.02em;
  margin: 14px 0 18px;
  color: #fff;
}
.factory p { color: rgba(255, 255, 255, .74); font-size: 14.5px; line-height: 1.95; max-width: 520px; }
.factory-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
  margin: 28px 0 30px;
}
.factory-stat { background: var(--navy); padding: 20px 18px; }
.factory-stat b { font-size: 27px; font-weight: 600; line-height: 1.15; display: block; }
.factory-stat b i { font-style: normal; font-size: 12px; color: var(--brass-2); margin-left: 3px; }
.factory-stat span { display: block; font-size: 12px; color: rgba(255, 255, 255, .58); margin-top: 5px; }
.factory-media { position: relative; }
.factory-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.factory-media .tag {
  position: absolute;
  left: 0;
  bottom: 0;
  background: var(--brass);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .16em;
  padding: 9px 16px;
}

/* ============================================================
   案例
   ============================================================ */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.case {
  position: relative;
  display: block;
  overflow: hidden;
  background: #121820;
  aspect-ratio: 4 / 3;
}
.case img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s cubic-bezier(.2, .7, .3, 1); }
.case:hover img { transform: scale(1.055); }
.case .cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 28px 20px 20px;
  background: linear-gradient(transparent, rgba(8, 12, 18, .82));
  color: #fff;
}
.case .cap small {
  font-size: 10px;
  letter-spacing: .2em;
  color: var(--brass-2);
  text-transform: uppercase;
}
.case .cap h3 { font-size: 16px; font-weight: 500; margin: 6px 0 0; line-height: 1.5; }

/* ============================================================
   新闻
   ============================================================ */
.news-layout { display: grid; grid-template-columns: 1.12fr .88fr; gap: clamp(30px, 4vw, 56px); }
.news-feat { display: block; }
.news-feat .thumb { aspect-ratio: 16 / 10; overflow: hidden; background: #EDEBE7; }
.news-feat .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s; }
.news-feat:hover .thumb img { transform: scale(1.04); }
.news-feat .meta { font-size: 12px; color: var(--muted-2); letter-spacing: .06em; margin: 18px 0 10px; }
.news-feat h3 { font-size: 22px; line-height: 1.42; letter-spacing: -.01em; margin: 0 0 10px; }
.news-feat:hover h3 { color: var(--brand); }
.news-feat p { font-size: 14px; color: var(--muted); line-height: 1.85; }
.news-side { display: flex; flex-direction: column; }
.news-item {
  display: flex;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.news-item:first-child { padding-top: 0; }
.news-item .date {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--brass);
  white-space: nowrap;
  padding-top: 3px;
}
.news-item h4 { font-size: 15px; font-weight: 500; line-height: 1.6; margin: 0 0 4px; }
.news-item h4 a:hover { color: var(--brand); }
.news-item span { font-size: 12px; color: var(--muted-2); }

/* ============================================================
   CTA 条
   ============================================================ */
.cta {
  background: var(--navy);
  color: #fff;
  padding: clamp(48px, 6vw, 78px) 0;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  right: -110px;
  top: -110px;
  width: 400px;
  height: 400px;
  border: 1px solid rgba(201, 168, 118, .22);
  border-radius: 50%;
  pointer-events: none;
}
.cta .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  position: relative;
}
.cta h2 { font-size: clamp(24px, 2.8vw, 38px); letter-spacing: -.02em; }
.cta p { margin-top: 10px; color: rgba(255, 255, 255, .68); font-size: 14px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ============================================================
   页脚
   ============================================================ */
.ft { background: #080C11; color: rgba(255, 255, 255, .7); padding-top: 58px; }
.ft-grid {
  display: grid;
  grid-template-columns: 1.45fr .8fr .8fr 1.1fr;
  gap: 40px;
  padding-bottom: 46px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.ft h5 {
  color: #fff;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin: 0 0 16px;
  font-weight: 600;
}
.ft a { display: block; font-size: 13px; color: rgba(255, 255, 255, .62); margin-bottom: 10px; transition: color .2s; }
.ft a:hover { color: #fff; }
.ft .brand img { height: 46px; width: auto; margin-bottom: 16px; }
.ft .brand p { font-size: 13px; line-height: 1.95; color: rgba(255, 255, 255, .5); max-width: 330px; }
.ft .contact { padding: 0; margin: 0; }
.ft .contact li {
  font-size: 13px;
  color: rgba(255, 255, 255, .62);
  margin-bottom: 11px;
  line-height: 1.6;
}
.ft .contact b { color: rgba(255, 255, 255, .88); font-weight: 500; }
.ft .qr { margin-top: 4px; }
.ft .qr img { width: 92px; height: 92px; background: #fff; padding: 4px; }
.ft .qr span { display: block; font-size: 11px; color: rgba(255, 255, 255, .38); margin-top: 8px; }
.ft .qr-ph {
  width: 92px;
  height: 92px;
  border: 1px dashed rgba(255, 255, 255, .22);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 11px;
  line-height: 1.6;
  color: rgba(255, 255, 255, .45);
}
.ft-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 20px 0;
  font-size: 12px;
  color: rgba(255, 255, 255, .36);
}
.ft-bottom a { display: inline; margin: 0 0 0 14px; color: rgba(255, 255, 255, .36); }
.ft-bottom a:hover { color: rgba(255, 255, 255, .72); }
.ft-bottom p { margin: 0; }

/* ============================================================
   内页：页头
   ============================================================ */
.pg-hero {
  position: relative;
  background: var(--navy);
  color: #fff;
  padding: clamp(48px, 6vw, 76px) 0 clamp(40px, 5vw, 60px);
  overflow: hidden;
}
.pg-hero .bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .26;
}
.pg-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 37, 64, .86), rgba(10, 37, 64, .96));
}
.pg-hero .wrap { position: relative; z-index: 2; }
.pg-hero .eyebrow { color: var(--brass-2); }
.pg-hero h1 {
  font-size: clamp(26px, 3.2vw, 42px);
  letter-spacing: -.02em;
  line-height: 1.2;
  margin: 12px 0 0;
  color: #fff;
}
.pg-hero .pg-sub {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .68);
  max-width: 620px;
}

/* 面包屑 */
.crumb {
  font-size: 12.5px;
  color: rgba(255, 255, 255, .5);
  margin-top: 20px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.crumb a { color: rgba(255, 255, 255, .62); transition: color .2s; }
.crumb a:hover { color: #fff; }
.crumb i.sep { font-style: normal; color: rgba(255, 255, 255, .3); }
/* 浅色底面包屑（用于内容区内） */
.crumb-light { color: var(--muted-2); }
.crumb-light a { color: var(--muted); }
.crumb-light a:hover { color: var(--navy); }
.crumb-light i.sep { color: var(--line-2); }

/* ============================================================
   内页：左右布局
   ============================================================ */
.layout {
  display: grid;
  grid-template-columns: 264px minmax(0, 1fr);
  gap: clamp(28px, 3.5vw, 52px);
  align-items: start;
  padding: clamp(40px, 5vw, 64px) 0 clamp(56px, 7vw, 90px);
}
.layout-full { padding: clamp(40px, 5vw, 64px) 0 clamp(56px, 7vw, 90px); }
.main-col { min-width: 0; }

/* 侧边栏 */
.side { position: sticky; top: 104px; }
.side-box { margin-bottom: 28px; }
.side-tit {
  font-size: 15px;
  font-weight: 600;
  color: var(--navy);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 9px;
}
.side-tit::before { content: ""; width: 3px; height: 14px; background: var(--brass); }
.side-nav li { border-bottom: 1px solid var(--line); }
.side-nav li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 2px;
  font-size: 14px;
  color: #3A424C;
  transition: color .2s, padding .2s;
}
.side-nav li a::after {
  content: "";
  width: 5px;
  height: 5px;
  border-right: 1px solid var(--muted-2);
  border-bottom: 1px solid var(--muted-2);
  transform: rotate(-45deg);
  opacity: 0;
  transition: opacity .2s;
}
.side-nav li a:hover { color: var(--brand); padding-left: 6px; }
.side-nav li a:hover::after { opacity: 1; }
.side-nav li.cur a { color: var(--navy); font-weight: 600; }
.side-nav li.cur a::after { opacity: 1; border-color: var(--brass); }

.side-news li { padding: 12px 0; border-bottom: 1px solid var(--line); }
.side-news li a { font-size: 13.5px; color: #3A424C; line-height: 1.6; display: block; transition: color .2s; }
.side-news li a:hover { color: var(--brand); }
.side-news li span { display: block; font-size: 11.5px; color: var(--muted-2); margin-top: 4px; }

.side-thumbs a { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); align-items: center; }
.side-thumbs img { width: 74px; height: 56px; object-fit: cover; flex: none; background: #EDEBE7; }
.side-thumbs p { font-size: 13.5px; line-height: 1.55; color: #3A424C; }
.side-thumbs a:hover p { color: var(--brand); }

.side-contact { background: var(--navy); padding: 24px 22px; color: #fff; }
.side-contact h5 { font-size: 12px; letter-spacing: .16em; color: var(--brass-2); margin-bottom: 10px; }
.side-contact .tel { font-size: 22px; font-weight: 600; letter-spacing: .01em; margin-bottom: 6px; }
.side-contact p { font-size: 12.5px; color: rgba(255, 255, 255, .6); line-height: 1.8; }
.side-contact .btn { margin-top: 16px; height: 40px; font-size: 13px; padding: 0 18px; }

/* ============================================================
   列表：资讯
   ============================================================ */
.news-list li { border-bottom: 1px solid var(--line); }
.news-list > li > a {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 20px 2px;
  transition: background .2s, padding .2s;
}
.news-list .no {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted-2);
  letter-spacing: .06em;
  padding-top: 5px;
  min-width: 26px;
}
.news-list .txt { min-width: 0; flex: 1; }
.news-list h3 { font-size: 16px; font-weight: 500; line-height: 1.55; margin: 0 0 6px; transition: color .2s; }
.news-list p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-list .date { font-size: 12.5px; color: var(--muted-2); white-space: nowrap; padding-top: 4px; }
.news-list > li > a:hover h3 { color: var(--brand); }
.news-list .thumb { width: 150px; height: 100px; flex: none; overflow: hidden; background: #EDEBE7; }
.news-list .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.news-list > li > a:hover .thumb img { transform: scale(1.05); }

/* ============================================================
   列表：产品 / 案例
   ============================================================ */
.pro-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pro-grid .card-body { padding: 16px 16px 18px; }
.pro-grid .card-body h3 { font-size: 15.5px; margin: 0; }

.pro-list { display: grid; gap: 20px; }
.pro-row {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  border: 1px solid var(--line);
  background: #fff;
  transition: border-color .3s, box-shadow .3s;
}
.pro-row:hover { border-color: rgba(11, 79, 196, .32); box-shadow: 0 18px 40px -28px rgba(10, 37, 64, .34); }
.pro-row .pic { aspect-ratio: 4 / 3; overflow: hidden; background: #EDEBE7; }
.pro-row .pic img { width: 100%; height: 100%; object-fit: cover; }
.pro-row .info { padding: 24px 26px; display: flex; flex-direction: column; justify-content: center; }
.pro-row .info h3 { font-size: 18px; margin: 0 0 8px; }
.pro-row .info p { font-size: 13.5px; color: var(--muted); line-height: 1.8; margin: 0 0 14px; }
.pro-row .info .go { font-size: 13px; font-weight: 600; color: var(--navy); }
.pro-row:hover .info .go { color: var(--brand); }

/* 视频 */
.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.video-card { display: block; border: 1px solid var(--line); background: #fff; }
.video-card .pic { aspect-ratio: 16 / 10; overflow: hidden; background: #EDEBE7; position: relative; }
.video-card .pic img { width: 100%; height: 100%; object-fit: cover; }
.video-card .play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(8, 12, 18, .28);
}
.video-card .play::after {
  content: "";
  width: 48px;
  height: 48px;
  border: 1px solid #fff;
  border-radius: 50%;
}
.video-card .info { padding: 14px 16px; }
.video-card h3 { font-size: 15px; font-weight: 500; margin-bottom: 4px; line-height: 1.5; }
.video-card span { font-size: 12px; color: var(--muted-2); }

/* ============================================================
   分页
   ============================================================ */
.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.pager a, .pager span.cur {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 13px;
  border: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--muted);
  background: #fff;
  transition: all .2s;
}
.pager a:hover { border-color: var(--navy); color: var(--navy); }
.pager span.cur { background: var(--navy); border-color: var(--navy); color: #fff; }
.pager .page-item { }
/* 兼容旧分页标记 */
.pagebar { margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--line); }
.pagination { display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; }
.pagination .page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 13px;
  border: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--muted);
  background: #fff;
  transition: all .2s;
}
.pagination .page-link:hover { border-color: var(--navy); color: var(--navy); }
.pagination .page-item.active,
.pagination .page-item.cur { background: var(--navy); border-color: var(--navy); color: #fff; }

/* 空状态 */
.empty {
  text-align: center;
  padding: 70px 20px;
  color: var(--muted-2);
  font-size: 14px;
  border: 1px dashed var(--line-2);
  background: var(--ivory);
}

/* ============================================================
   详情页
   ============================================================ */
.article { min-width: 0; }
.article-head { padding-bottom: 22px; border-bottom: 1px solid var(--line); margin-bottom: 30px; }
.article-head h1 {
  font-size: clamp(22px, 2.6vw, 33px);
  line-height: 1.35;
  letter-spacing: -.02em;
  margin-bottom: 14px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--muted-2);
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta b { color: var(--brass); font-weight: 600; }

/* 富文本正文 */
.article-body { font-size: 15.5px; line-height: 1.95; color: #23282F; }
.article-body p { margin: 0 0 18px; }
.article-body h2, .article-body h3, .article-body h4 {
  color: var(--ink);
  line-height: 1.4;
  margin: 34px 0 14px;
  letter-spacing: -.01em;
}
.article-body h2 { font-size: 22px; }
.article-body h3 { font-size: 18.5px; }
.article-body h4 { font-size: 16.5px; }
.article-body a { color: var(--brand); border-bottom: 1px solid rgba(11, 79, 196, .3); }
.article-body a:hover { border-color: var(--brand); }
.article-body ul, .article-body ol { margin: 0 0 18px; padding-left: 22px; }
.article-body ul li { list-style: disc; margin-bottom: 8px; }
.article-body ol li { list-style: decimal; margin-bottom: 8px; }
.article-body img { max-width: 100%; height: auto; margin: 20px auto; }
.article-body blockquote {
  margin: 22px 0;
  padding: 16px 22px;
  border-left: 2px solid var(--brass);
  background: var(--ivory);
  color: var(--muted);
  font-size: 14.5px;
}
.article-body table { width: 100%; margin: 20px 0; font-size: 14px; }
.article-body table th, .article-body table td { border: 1px solid var(--line-2); padding: 10px 12px; text-align: left; }
.article-body table th { background: var(--ivory); font-weight: 600; }
.article-body iframe { max-width: 100%; }

.article-note {
  margin: 30px 0 0;
  padding: 14px 18px;
  background: var(--ivory);
  border-left: 2px solid var(--brass);
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.8;
}

.prev-next {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 36px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.prev-next a, .prev-next span {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.7;
  display: block;
}
.prev-next a:hover { color: var(--brand); }
.prev-next label { display: block; font-size: 11px; letter-spacing: .14em; color: var(--brass); margin-bottom: 5px; }
.prev-next .next { text-align: right; }

/* 相关推荐 */
.relate { margin-top: 46px; }
.relate-tit {
  font-size: 17px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.relate-tit::before { content: ""; width: 3px; height: 16px; background: var(--brass); }

/* ============================================================
   留言表单
   ============================================================ */
.form-card {
  background: #fff;
  border: 1px solid var(--line);
  padding: clamp(24px, 3.4vw, 42px);
}
.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: #3A424C;
  margin-bottom: 8px;
}
.field label em { font-style: normal; color: #C0392B; margin-left: 3px; }
.field input[type=text],
.field input[type=tel],
.field input[type=email],
.field input[type=password],
.field textarea,
.field select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  font-size: 14px;
  color: var(--ink);
  background: #fff;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(11, 79, 196, .1);
}
.field textarea { min-height: 132px; resize: vertical; line-height: 1.8; }
.field input::placeholder, .field textarea::placeholder { color: var(--muted-2); }
.form-tip { font-size: 12.5px; color: var(--muted-2); margin-top: 14px; line-height: 1.8; }
.form-actions { margin-top: 26px; }

/* 验证码行 */
.code-row { display: flex; gap: 10px; align-items: stretch; }
.code-row input {
  flex: 1;
  padding: 12px 14px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  font-size: 14px;
  outline: none;
  transition: border-color .2s;
}
.code-row input:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(11, 79, 196, .1); }
.code-row img {
  width: 112px;
  height: 46px;
  object-fit: cover;
  border: 1px solid var(--line-2);
  background: #fff;
  cursor: pointer;
}

/* 兼容旧留言表单结构 */
.form_book .item { margin-bottom: 16px; }
.form_book .item p { font-size: 13px; color: #3A424C; margin-bottom: 8px; }
.form_book .txt, .form_book .sub {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  font-size: 14px;
  outline: none;
}
.form_book .submits, .form_book .submit {
  height: 46px;
  padding: 0 34px;
  background: var(--navy);
  color: #fff;
  border: 0;
  border-radius: var(--r);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .25s;
}
.form_book .submits:hover, .form_book .submit:hover { background: var(--brand); }
.form_book .red { color: #C0392B; }

/* ============================================================
   搜索
   ============================================================ */
.searchbar { display: flex; gap: 10px; max-width: 560px; }
.searchbar input[type=text] {
  flex: 1;
  height: 46px;
  padding: 0 16px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  font-size: 14px;
  outline: none;
  transition: border-color .2s;
}
.searchbar input[type=text]:focus { border-color: var(--brand); }
.searchbar button {
  height: 46px;
  padding: 0 26px;
  background: var(--navy);
  color: #fff;
  border: 0;
  border-radius: var(--r);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .25s;
}
.searchbar button:hover { background: var(--brand); }

/* 兼容旧搜索框 */
.searchformBox { display: flex; }
.searchformBox form { display: flex; gap: 8px; }
.serach_input {
  width: 240px;
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  font-size: 13.5px;
  outline: none;
}
.btn_serach {
  height: 40px;
  min-width: 66px;
  background: var(--navy) url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23fff' stroke-width='1.6'%3E%3Ccircle cx='7' cy='7' r='5'/%3E%3Cpath d='M11 11l4 4'/%3E%3C/svg%3E") center no-repeat;
  border: 0;
  border-radius: var(--r);
  cursor: pointer;
}

/* 热点推荐词（旧结构，重绘为轻量标签） */
.hot_keys {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.hot_keys .keyleft { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.hot_keys .title { flex: none; }
.hot_keys .title_more { font-size: 12.5px; color: var(--muted-2); white-space: nowrap; }
.hot_keys .GD_CONTENT { display: flex; gap: 8px; flex-wrap: wrap; }
.hot_keys .GD_CONTENT a {
  font-size: 12.5px;
  color: var(--muted);
  padding: 4px 11px;
  border: 1px solid var(--line);
  background: var(--ivory);
  transition: all .2s;
}
.hot_keys .GD_CONTENT a:hover { border-color: var(--navy); color: var(--navy); background: #fff; }

/* ============================================================
   入场动画
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .3, 1);
}
[data-reveal].in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1360px) {
  .hd-nav { gap: 20px; font-size: 14px; }
  .hd-right .btn { display: none; }
}

@media (max-width: 1180px) {
  .hd-nav { gap: 18px; font-size: 14px; }
  .hd-right .btn { display: none; }
  .layout { grid-template-columns: 230px minmax(0, 1fr); }
  .pro-row { grid-template-columns: 200px minmax(0, 1fr); }
}

@media (max-width: 1024px) {
  .hd .wrap { height: 72px; }
  .hd-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px -24px rgba(10, 37, 64, .3);
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
    padding: 0 var(--pad);
  }
  .nav-cb:checked ~ .hd-nav { max-height: 520px; overflow-y: auto; }
  .hd-nav > li { border-bottom: 1px solid var(--line); }
  .hd-nav > li > a { padding: 14px 0; }
  .hd-nav > li > a::after { display: none; }
  .hd-nav dd {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    border: 0;
    box-shadow: none;
    padding: 0 0 10px 14px;
  }
  .hd-nav dd a { padding: 6px 0; }
  .hd-nav dd a:hover { background: none; }

  .nav-label {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 42px;
    padding: 0 11px;
    border: 1px solid var(--line-2);
    cursor: pointer;
    order: 3;
  }
  .nav-label::before,
  .nav-label::after {
    content: "";
    display: block;
    height: 1.5px;
    background: var(--ink);
    transition: transform .3s;
  }
  .nav-label i { display: block; height: 1.5px; background: var(--ink); }

  .hero-media { height: 520px; }
  .trust .wrap { grid-template-columns: repeat(2, 1fr); gap: 22px 0; }
  .trust-item:nth-child(2) { border-right: 0; }
  .grid-3, .pro-grid, .case-grid, .video-grid { grid-template-columns: repeat(2, 1fr); }
  .craft-grid, .factory-grid, .news-layout { grid-template-columns: 1fr; }
  .craft-media .frame { display: none; }
  .layout { grid-template-columns: 1fr; }
  .side { position: static; }
  .side-box { margin-bottom: 22px; }
  .ft-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}

@media (max-width: 720px) {
  body { font-size: 15px; }
  .topbar { display: none; }
  .hd .wrap { height: 64px; gap: 12px; }
  .hd-logo img { height: 38px; }
  .hd-phone small { display: none; }
  .hd-phone b { font-size: 15px; }
  .hero-media { height: 440px; }
  .hero-copy h1, .hero-copy .h1 { font-size: 26px; }
  .hero-copy .lead { font-size: 14px; }
  .hero-stats { gap: 20px; }
  .hero-stats b { font-size: 21px; }
  .hero-stats span { font-size: 11px; }

  .sec { padding: 52px 0; }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 16px; margin-bottom: 30px; }
  .grid-3, .grid-4, .grid-2, .pro-grid, .case-grid, .video-grid { grid-template-columns: 1fr; }
  .tabs { gap: 20px; }
  .trust .wrap { grid-template-columns: 1fr 1fr; padding-top: 24px; padding-bottom: 24px; }
  .trust-item { border-right: 0; }
  .trust-item:nth-child(odd) { border-right: 1px solid var(--line); }
  .trust-item b { font-size: 23px; }

  .craft-media img { aspect-ratio: 16 / 10; }
  .factory-stats { grid-template-columns: 1fr 1fr; }

  .news-list .thumb { width: 104px; height: 74px; }
  .news-list h3 { font-size: 15px; }
  .news-list p { -webkit-line-clamp: 2; }
  .news-list .date { display: none; }

  .pro-row { grid-template-columns: 1fr; }
  .pro-row .pic { aspect-ratio: 16 / 10; }
  .pro-row .info { padding: 18px 18px 20px; }

  .prev-next { grid-template-columns: 1fr; gap: 14px; }
  .prev-next .next { text-align: left; }
  .form-row { grid-template-columns: 1fr; }
  .ft-grid { grid-template-columns: 1fr; gap: 26px; padding-bottom: 30px; }
  .ft-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
  .ft-bottom a { margin: 0 12px 0 0; }
  .pg-hero { padding: 42px 0 36px; }
  .article-body { font-size: 15px; }
  .hot_keys .searchformBox { width: 100%; }
  .serach_input { width: 100%; }
  .hot_keys .searchformBox form { width: 100%; }
}