/* ============================================================
   欧博电力 OUBO POWER 官网样式
   设计语言：深钢蓝 + 电力橙，电网走线为签名元素
   ============================================================ */

/* ---------- 1. 变量与重置 ---------- */
:root {
  --blue-900: #0c2a40;
  --blue-800: #123b5a;
  --blue-700: #1a4d73;
  --blue-600: #25618f;
  --blue-100: #e7eff5;
  --blue-50: #f3f7fa;
  --orange: #f28c28;
  --orange-dark: #d97a14;
  --orange-soft: #fdeedd;
  --ink: #1c2733;
  --ink-2: #45566a;
  --ink-3: #6b7c8e;
  --line: #dde5ec;
  --bg: #f6f7f9;
  --white: #ffffff;
  --warn: #ffb800;
  --radius: 6px;
  --shadow: 0 8px 30px rgba(12, 42, 64, 0.10);
  --shadow-sm: 0 2px 10px rgba(12, 42, 64, 0.08);
  --font: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  --font-num: "Bahnschrift", "DIN Alternate", "Microsoft YaHei", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: inherit; }

.container { width: min(1200px, 92%); margin: 0 auto; }

/* 电网走线签名元素：一段带节点的走线，用于章节眉标与分隔 */
.wire-line {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  height: 14px;
  color: var(--blue-700);
}
.wire-line::before {
  content: "";
  flex: 1;
  height: 2px;
  background: repeating-linear-gradient(90deg, currentColor 0 12px, transparent 12px 18px);
}
.wire-line .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(242, 140, 40, 0.18);
  flex: none;
}
.wire-line::after {
  content: "";
  flex: 1;
  height: 2px;
  background: repeating-linear-gradient(90deg, currentColor 0 12px, transparent 12px 18px);
}

/* 安全警示斜纹条（签名元素） */
.warning-strip {
  height: 6px;
  background: repeating-linear-gradient(135deg, var(--orange) 0 14px, #1c2733 14px 28px);
}

/* ---------- 2. 通用排版 ---------- */
h1, h2, h3, h4 { line-height: 1.3; color: var(--blue-900); font-weight: 700; }

.sec { padding: 72px 0; }
.sec.bg-light { background: var(--bg); }
.sec.bg-blue { background: var(--blue-900); color: #c9d7e4; }

.sec-head { max-width: 720px; margin-bottom: 40px; }
.sec-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--orange);
  font-weight: 600;
  margin-bottom: 10px;
}
.sec-head .eyebrow::before {
  content: "";
  width: 22px; height: 3px;
  background: var(--orange);
}
.sec-head h2 { font-size: 30px; margin-bottom: 12px; }
.sec-head p { color: var(--ink-2); font-size: 15px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head.center .eyebrow::before { display: none; }
.sec-head.center .eyebrow::after {
  content: "";
  width: 22px; height: 3px;
  background: var(--orange);
}
.sec-head.light h2 { color: #fff; }
.sec-head.light p { color: #a9bccc; }

/* ---------- 3. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all .2s;
}
.btn-orange { background: var(--orange); color: #fff; }
.btn-orange:hover { background: var(--orange-dark); }
.btn-outline { border-color: rgba(255,255,255,.55); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,.12); }
.btn-blue { background: var(--blue-800); color: #fff; }
.btn-blue:hover { background: var(--blue-700); }
.btn-ghost { border-color: var(--blue-600); color: var(--blue-700); }
.btn-ghost:hover { background: var(--blue-100); }

/* ---------- 4. 顶部导航 ---------- */
.topbar {
  background: var(--blue-900);
  color: #b9cddd;
  font-size: 13px;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 38px;
}
.topbar a { color: #b9cddd; }
.topbar a:hover { color: #fff; }
.topbar .tb-right { display: flex; gap: 22px; }

.site-header {
  background: var(--blue-800);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 14px rgba(0,0,0,.18);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo { display: flex; align-items: center; gap: 10px; color: #fff; }
.logo-mark {
  width: 40px; height: 40px;
  border-radius: 6px;
  background: var(--orange);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.logo-mark svg { width: 24px; height: 24px; stroke: #fff; }
.logo-name { font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.logo-name small { display: block; font-size: 10px; font-weight: 400; letter-spacing: 3px; color: #9db4c8; }

.main-nav ul { display: flex; gap: 4px; }
.main-nav a {
  display: block;
  padding: 8px 15px;
  color: #cfe0ee;
  font-size: 15px;
  border-radius: 4px;
  transition: all .2s;
}
.main-nav a:hover { color: #fff; background: rgba(255,255,255,.08); }
.main-nav a.active { color: #fff; background: rgba(242,140,40,.18); }
.main-nav a.active::after {
  content: "";
  display: block;
  height: 2px;
  background: var(--orange);
  margin-top: 3px;
  border-radius: 1px;
}

.header-tel {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-size: 14px;
  padding-left: 18px;
  border-left: 1px solid rgba(255,255,255,.2);
}
.header-tel b { font-size: 18px; color: var(--orange); font-family: var(--font-num); letter-spacing: 1px; }

.nav-toggle { display: none; background: none; border: 0; width: 40px; height: 40px; }
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: #fff;
  margin: 5px auto;
  transition: all .25s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 5. 页脚 ---------- */
.site-footer { background: var(--blue-900); color: #a9bccc; font-size: 14px; }
.footer-top { padding: 52px 0 34px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 40px; }
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 18px;
  padding-bottom: 10px;
  position: relative;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 26px; height: 2px;
  background: var(--orange);
}
.footer-col li { margin-bottom: 9px; }
.footer-col a { color: #a9bccc; }
.footer-col a:hover { color: #fff; }
.footer-about p { margin: 14px 0 18px; font-size: 13.5px; line-height: 1.9; }
.footer-contact li { display: flex; gap: 8px; margin-bottom: 11px; }
.footer-contact svg { flex: none; margin-top: 4px; stroke: var(--orange); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 16px 0;
  font-size: 13px;
  color: #7e97ac;
}
.footer-bottom .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.footer-bottom a { color: #7e97ac; }
.footer-bottom a:hover { color: #fff; }
.footer-link { display: inline-block; margin-left: 18px; }

/* ---------- 6. 首页 Hero ---------- */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  background: var(--blue-900);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 62%;
  opacity: .55;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(12,42,64,.92) 0%, rgba(12,42,64,.55) 46%, rgba(12,42,64,.25) 100%);
}
.hero .container { position: relative; z-index: 2; padding: 90px 0; }
.hero h1 {
  color: #fff;
  font-size: 44px;
  line-height: 1.28;
  margin-bottom: 18px;
  max-width: 640px;
  font-weight: 800;
}
.hero h1 em { font-style: normal; color: var(--orange); }
.hero .hero-sub {
  max-width: 560px;
  color: #c9d7e4;
  font-size: 16px;
  margin-bottom: 32px;
}
.hero .hero-btns { display: flex; gap: 14px; margin-bottom: 54px; }
.hero .hero-tags { display: flex; gap: 26px; flex-wrap: wrap; }
.hero .hero-tags li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #d7e3ee;
}
.hero .hero-tags svg { stroke: var(--orange); flex: none; }

/* 首页数据条 */
.stats-bar {
  background: var(--white);
  border-top: 4px solid var(--orange);
  box-shadow: var(--shadow);
  margin-top: -1px;
  position: relative;
  z-index: 3;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  text-align: center;
}
.stat-cell { padding: 28px 12px; border-right: 1px solid var(--line); }
.stat-cell:last-child { border-right: 0; }
.stat-num {
  font-family: var(--font-num);
  font-size: 40px;
  font-weight: 700;
  color: var(--blue-800);
  line-height: 1.1;
}
.stat-num span { font-size: 20px; color: var(--orange); }
.stat-label { font-size: 13.5px; color: var(--ink-3); margin-top: 6px; }

/* ---------- 7. 业务卡片 ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.biz-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s, box-shadow .25s;
  display: flex;
  flex-direction: column;
}
.biz-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.biz-card .card-img { position: relative; aspect-ratio: 4 / 3; overflow: hidden; }
.biz-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.biz-card:hover .card-img img { transform: scale(1.06); }
.biz-card .card-img .num-tag {
  position: absolute;
  left: 0; bottom: 0;
  background: var(--orange);
  color: #fff;
  font-family: var(--font-num);
  font-size: 13px;
  padding: 4px 12px;
  letter-spacing: 1px;
}
.biz-card .card-body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.biz-card h3 { font-size: 18px; margin-bottom: 10px; }
.biz-card p { font-size: 13.5px; color: var(--ink-2); flex: 1; }
.biz-card .card-link {
  margin-top: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue-700);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.biz-card .card-link svg { transition: transform .2s; }
.biz-card:hover .card-link svg { transform: translateX(4px); }

/* ---------- 8. 图文行（内页业务详情） ---------- */
.row-block { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; padding: 40px 0; }
.row-block.reverse .row-img { order: 2; }
.row-block .row-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); }
.row-block .row-img img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.row-block .row-img .img-cap {
  background: var(--blue-900);
  color: #c9d7e4;
  font-size: 12.5px;
  padding: 8px 14px;
}
.row-block h3 { font-size: 24px; margin-bottom: 8px; }
.row-block .row-tag {
  display: inline-block;
  background: var(--orange-soft);
  color: var(--orange-dark);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 3px 10px;
  border-radius: 3px;
  margin-bottom: 12px;
}
.row-block p { color: var(--ink-2); margin-bottom: 12px; }
.row-block ul li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  color: var(--ink-2);
  font-size: 14px;
}
.row-block ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 7px; height: 7px;
  background: var(--orange);
  border-radius: 50%;
}

/* ---------- 9. 首页关于 & 数据 ---------- */
.about-split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 52px; align-items: center; }
.about-split .about-img { position: relative; }
.about-split .about-img img { border-radius: var(--radius); box-shadow: var(--shadow); }
.about-split .about-img .badge-exp {
  position: absolute;
  right: -14px; bottom: -18px;
  background: var(--orange);
  color: #fff;
  text-align: center;
  border-radius: var(--radius);
  padding: 14px 18px;
  box-shadow: 0 10px 24px rgba(217,122,20,.4);
}
.badge-exp b { display: block; font-family: var(--font-num); font-size: 34px; line-height: 1; }
.badge-exp span { font-size: 12px; letter-spacing: 2px; }
.about-points { margin: 20px 0 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 22px; }
.about-points li { display: flex; gap: 10px; font-size: 14.5px; color: var(--ink-2); align-items: flex-start; }
.about-points svg { flex: none; margin-top: 3px; stroke: var(--orange); }

/* 资质条 */
.qual-bar { border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); padding: 22px 28px; }
.qual-bar ul { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.qual-bar li {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 14px;
  color: var(--ink-2);
  border-right: 1px dashed var(--line);
  padding-right: 18px;
}
.qual-bar li:last-child { border-right: 0; }
.qual-bar svg { flex: none; stroke: var(--blue-700); }

/* ---------- 10. 客户 logo / 案例 ---------- */
.client-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.client-cell {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius);
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--ink-2);
  font-size: 15px;
  letter-spacing: 1px;
  transition: all .2s;
}
.client-cell:hover { border-color: var(--orange); color: var(--orange-dark); box-shadow: var(--shadow-sm); }

.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .25s;
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.case-card .case-img { aspect-ratio: 16 / 9; overflow: hidden; }
.case-card .case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.case-card:hover .case-img img { transform: scale(1.05); }
.case-card .case-body { padding: 20px 22px; }
.case-card .case-tag {
  font-size: 12px;
  color: var(--orange-dark);
  background: var(--orange-soft);
  padding: 2px 9px;
  border-radius: 3px;
  display: inline-block;
  margin-bottom: 10px;
}
.case-card h3 { font-size: 17px; margin-bottom: 8px; }
.case-card p { font-size: 13.5px; color: var(--ink-2); }
.case-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  color: var(--ink-3);
}

/* ---------- 11. 新闻 ---------- */
.news-list { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 22px; }
.news-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .25s;
  display: flex;
  flex-direction: column;
}
.news-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.news-card .news-img { aspect-ratio: 16 / 9; overflow: hidden; }
.news-card .news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.news-card:hover .news-img img { transform: scale(1.05); }
.news-card .news-body { padding: 18px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.news-date { font-size: 12.5px; color: var(--ink-3); display: flex; align-items: center; gap: 6px; margin-bottom: 8px; }
.news-date svg { stroke: var(--orange); }
.news-card h3 { font-size: 16.5px; line-height: 1.5; margin-bottom: 8px; }
.news-card h3 a:hover { color: var(--orange-dark); }
.news-card p { font-size: 13.5px; color: var(--ink-2); flex: 1; }
.news-more { margin-top: 12px; font-size: 13.5px; color: var(--blue-700); font-weight: 600; }

/* 新闻列表页（竖排） */
.news-rows .news-row {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 22px;
  transition: all .25s;
}
.news-rows .news-row:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.news-rows .news-row img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 3 / 2; }
.news-rows .news-row .nr-body { padding: 24px 26px; }
.news-rows .news-row h3 { font-size: 20px; margin-bottom: 10px; }
.news-rows .news-row h3 a:hover { color: var(--orange-dark); }
.news-rows .news-row p { color: var(--ink-2); font-size: 14px; margin-bottom: 12px; }

/* 分页 */
.pager { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.pager a, .pager span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--ink-2);
  background: var(--white);
}
.pager a:hover { border-color: var(--orange); color: var(--orange-dark); }
.pager .cur { background: var(--blue-800); border-color: var(--blue-800); color: #fff; }

/* ---------- 12. 客户评价 ---------- */
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.quote-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  position: relative;
  transition: all .25s;
}
.quote-card:hover { box-shadow: var(--shadow); }
.quote-card::before {
  content: "\201C";
  position: absolute;
  top: 8px; right: 18px;
  font-family: Georgia, serif;
  font-size: 64px;
  line-height: 1;
  color: var(--blue-100);
}
.quote-card p { font-size: 14px; color: var(--ink-2); margin-bottom: 18px; }
.quote-card .q-from { display: flex; align-items: center; gap: 12px; }
.q-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--blue-800);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  flex: none;
}
.q-avatar.o { background: var(--orange); }
.q-avatar.g { background: var(--blue-600); }
.q-name { font-size: 14.5px; font-weight: 600; color: var(--blue-900); }
.q-post { font-size: 12.5px; color: var(--ink-3); }

/* 合作对象分组 */
.partner-group { margin-bottom: 40px; }
.partner-group h3 {
  font-size: 17px;
  margin-bottom: 16px;
  padding-left: 14px;
  border-left: 3px solid var(--orange);
}
.partner-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.partner-tags li {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 4px;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--ink-2);
}
.partner-tags li:hover { border-color: var(--orange); color: var(--orange-dark); }

/* ---------- 13. 关于我们 ---------- */
.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 8px; top: 6px; bottom: 6px;
  width: 2px;
  background: repeating-linear-gradient(180deg, var(--blue-700) 0 10px, transparent 10px 18px);
}
.tl-item { position: relative; margin-bottom: 26px; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -29px; top: 8px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--orange);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--orange);
}
.tl-year {
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  color: var(--orange-dark);
  margin-bottom: 4px;
}
.tl-item h4 { font-size: 16.5px; margin-bottom: 6px; }
.tl-item p { font-size: 13.5px; color: var(--ink-2); }

/* 资质证书格 */
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cert-card {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  transition: all .25s;
}
.cert-card:hover { border-color: var(--orange); box-shadow: var(--shadow-sm); }
.cert-ico {
  width: 46px; height: 46px;
  border-radius: 6px;
  background: var(--blue-100);
  color: var(--blue-700);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.cert-ico svg { width: 24px; height: 24px; stroke: currentColor; }
.cert-card h4 { font-size: 15.5px; margin-bottom: 6px; }
.cert-card p { font-size: 13px; color: var(--ink-3); }

/* 文化三卡 */
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.value-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: all .25s;
}
.value-card:hover { background: rgba(255,255,255,.09); }
.value-card .v-ico {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--orange);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.value-card .v-ico svg { width: 26px; height: 26px; stroke: #fff; }
.value-card h3 { color: #fff; font-size: 18px; margin-bottom: 10px; }
.value-card p { color: #a9bccc; font-size: 14px; }

/* ---------- 14. 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: start; }
.contact-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 26px; }
.contact-card {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  gap: 14px;
  transition: all .25s;
}
.contact-card:hover { border-color: var(--orange); box-shadow: var(--shadow-sm); }
.contact-card .c-ico {
  width: 46px; height: 46px;
  border-radius: 6px;
  background: var(--orange-soft);
  color: var(--orange-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.contact-card .c-ico svg { width: 22px; height: 22px; stroke: currentColor; }
.contact-card h4 { font-size: 15px; margin-bottom: 4px; }
.contact-card p { font-size: 13.5px; color: var(--ink-2); }
.contact-card p b { color: var(--blue-800); font-family: var(--font-num); font-size: 17px; }

.form-wrap {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow-sm);
}
.form-wrap h3 { font-size: 20px; margin-bottom: 6px; }
.form-wrap .form-sub { font-size: 13.5px; color: var(--ink-3); margin-bottom: 22px; }
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 13.5px; color: var(--ink-2); margin-bottom: 6px; }
.form-row label i { color: var(--orange); font-style: normal; }
.form-row input, .form-row textarea, .form-row select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 10px 14px;
  background: var(--bg);
  transition: border-color .2s;
  outline: none;
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
  border-color: var(--blue-600);
  background: var(--white);
}
.form-row textarea { min-height: 110px; resize: vertical; }
.form-tip { font-size: 12.5px; color: var(--ink-3); margin-top: 8px; }
.form-msg {
  margin-top: 12px;
  font-size: 14px;
  color: var(--blue-700);
  display: none;
}
.form-msg.show { display: block; }

.map-box {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--blue-100);
  min-height: 240px;
  position: relative;
}
.map-box .map-pin {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--blue-800);
  font-size: 14px;
}
.map-box svg.map-lines { width: 100%; height: 100%; display: block; }

/* ---------- 15. 内页 banner 与面包屑 ---------- */
.page-banner {
  background: var(--blue-900);
  color: #fff;
  position: relative;
  overflow: hidden;
  padding: 66px 0 56px;
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 300px at 85% 20%, rgba(37,97,143,.5), transparent 60%),
    repeating-linear-gradient(135deg, rgba(242,140,40,.06) 0 3px, transparent 3px 7px);
  pointer-events: none;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { color: #fff; font-size: 34px; margin-bottom: 10px; }
.page-banner p { color: #a9bccc; max-width: 620px; font-size: 15px; }
.crumbs { margin-top: 16px; display: flex; gap: 8px; align-items: center; font-size: 13px; color: #8fa8bc; flex-wrap: wrap; }
.crumbs a { color: #8fa8bc; }
.crumbs a:hover { color: var(--orange); }
.crumbs .sep { color: #54708a; }

/* 锚点卡片（核心业务页目录） */
.anchor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.anchor-card {
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: all .2s;
}
.anchor-card:hover { border-color: var(--orange); box-shadow: var(--shadow-sm); }
.anchor-card .a-ico {
  width: 42px; height: 42px;
  border-radius: 6px;
  background: var(--blue-100);
  color: var(--blue-700);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.anchor-card .a-ico svg { width: 22px; height: 22px; stroke: currentColor; }
.anchor-card b { font-size: 15.5px; color: var(--blue-900); display: block; }
.anchor-card span { font-size: 12.5px; color: var(--ink-3); }

/* ---------- 16. CTA 区块 ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--blue-800), var(--blue-900));
  color: #fff;
  padding: 54px 0;
  position: relative;
  overflow: hidden;
}
.cta-band::after {
  content: "";
  position: absolute;
  right: -60px; top: -60px;
  width: 260px; height: 260px;
  border-radius: 50%;
  border: 30px solid rgba(242,140,40,.16);
}
.cta-band .container { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; font-size: 28px; margin-bottom: 8px; }
.cta-band p { color: #b9cddd; }
.cta-band .btn { font-size: 16px; padding: 14px 34px; }

/* ---------- 17. 通用小件 ---------- */
.divider { height: 1px; background: var(--line); border: 0; }
.mt40 { margin-top: 40px; }
.mt60 { margin-top: 60px; }
.center { text-align: center; }

/* 资质荣誉横条（首页深蓝区） */
.honor-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 34px; }
.honor-cell {
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius);
  padding: 22px 16px;
  text-align: center;
  background: rgba(255,255,255,.04);
}
.honor-cell b { display: block; font-size: 22px; color: var(--orange); font-family: var(--font-num); margin-bottom: 4px; }
.honor-cell span { font-size: 13px; color: #a9bccc; }

/* 返回顶部 */
.to-top {
  position: fixed;
  right: 22px; bottom: 22px;
  width: 44px; height: 44px;
  border-radius: 8px;
  background: var(--blue-800);
  color: #fff;
  border: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all .3s;
  box-shadow: var(--shadow);
  z-index: 90;
}
.to-top.show { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--orange); }

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1024px) {
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .news-list, .quote-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .client-row { grid-template-columns: repeat(3, 1fr); }
  .anchor-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-cell { border-bottom: 1px solid var(--line); }
  .stat-cell:nth-child(2) { border-right: 0; }
  .stat-cell:nth-child(3), .stat-cell:nth-child(4) { border-bottom: 0; }
  .qual-bar ul { grid-template-columns: repeat(2, 1fr); }
  .qual-bar li:nth-child(2) { border-right: 0; }
}

@media (max-width: 768px) {
  body { font-size: 14px; }
  .sec { padding: 52px 0; }
  .sec-head h2 { font-size: 24px; }

  .topbar .tb-right { display: none; }
  .header-tel { display: none; }
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed;
    top: 110px; left: 0; right: 0;
    background: var(--blue-800);
    padding: 10px 4%;
    box-shadow: 0 10px 20px rgba(0,0,0,.25);
    display: none;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; }
  .main-nav a { padding: 12px 8px; border-bottom: 1px solid rgba(255,255,255,.08); }

  .hero { min-height: 520px; }
  .hero h1 { font-size: 30px; }
  .hero .container { padding: 64px 0; }
  .hero .hero-btns { flex-direction: column; align-items: flex-start; }

  .about-split, .row-block, .contact-grid { grid-template-columns: 1fr; }
  .row-block.reverse .row-img { order: 0; }
  .about-split .about-img .badge-exp { right: 8px; bottom: 8px; }
  .biz-grid, .case-grid, .news-list, .quote-grid, .value-grid, .cert-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .news-rows .news-row { grid-template-columns: 1fr; }
  .news-rows .news-row img { aspect-ratio: 16 / 9; }
  .honor-strip { grid-template-columns: repeat(2, 1fr); }
  .client-row { grid-template-columns: repeat(2, 1fr); }
  .anchor-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .page-banner h1 { font-size: 27px; }
  .cta-band .container { justify-content: center; text-align: center; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .stat-cell { border-right: 0; border-bottom: 1px solid var(--line); }
  .stat-cell:last-child { border-bottom: 0; }
  .qual-bar ul { grid-template-columns: 1fr; }
  .qual-bar li { border-right: 0; border-bottom: 1px dashed var(--line); padding-bottom: 12px; }
  .qual-bar li:last-child { border-bottom: 0; padding-bottom: 0; }
}