/* ===========================================================
   shebeijl.cn  企业官网 样式表
   设计基调：工业深蓝 + 琥珀强调色，简洁、可信、响应式
   =========================================================== */

:root {
  --c-primary: #0e5aa7;
  --c-primary-dark: #083f77;
  --c-dark: #0b2c47;
  --c-accent: #f5a623;
  --c-accent-dark: #d98c0a;
  --c-text: #2c3542;
  --c-text-light: #6b7684;
  --c-border: #e3e8ee;
  --c-bg: #ffffff;
  --c-bg-soft: #f6f8fb;
  --c-bg-deep: #0b2c47;
  --radius: 6px;
  --shadow-sm: 0 2px 8px rgba(11, 44, 71, .06);
  --shadow-md: 0 8px 24px rgba(11, 44, 71, .10);
  --shadow-lg: 0 16px 48px rgba(11, 44, 71, .16);
  --maxw: 1200px;
  --font: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

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

img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color .2s; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--c-dark);
  color: rgba(255,255,255,.78);
  font-size: 13px;
  padding: 7px 0;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.topbar a:hover { color: var(--c-accent); }
.topbar-right { display: flex; gap: 18px; align-items: center; }
.topbar-right span { display: inline-flex; align-items: center; gap: 6px; }

/* ---------- 导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 999;
  background: rgba(255,255,255,.97);
  backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--c-border);
  transition: box-shadow .25s;
}
.header.scrolled { box-shadow: var(--shadow-sm); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 74px; }

.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 42px; height: 42px; flex: none;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark));
  border-radius: var(--radius);
  display: grid; place-items: center;
  color: #fff; font-weight: 700; font-size: 17px; letter-spacing: .5px;
}
.logo-text strong { display: block; font-size: 17px; color: var(--c-dark); letter-spacing: .5px; line-height: 1.3; }
.logo-text small { display: block; font-size: 11px; color: var(--c-text-light); letter-spacing: 1.5px; text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 8px 16px; font-size: 15px; color: var(--c-text);
  border-radius: var(--radius); position: relative; font-weight: 500;
}
.nav a:hover { color: var(--c-primary); background: var(--c-bg-soft); }
.nav a.active { color: var(--c-primary); }
.nav a.active::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px;
  height: 2px; background: var(--c-accent); border-radius: 2px;
}

.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--c-border);
  background: #fff; border-radius: var(--radius); position: relative; }
.nav-toggle i { position: absolute; left: 11px; right: 11px; height: 2px; background: var(--c-dark);
  transition: .25s; }
.nav-toggle i:nth-child(1) { top: 15px; }
.nav-toggle i:nth-child(2) { top: 20px; }
.nav-toggle i:nth-child(3) { top: 25px; }
.nav-toggle.open i:nth-child(1) { top: 20px; transform: rotate(45deg); }
.nav-toggle.open i:nth-child(2) { opacity: 0; }
.nav-toggle.open i:nth-child(3) { top: 20px; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 540px; display: flex; align-items: center;
  background: linear-gradient(135deg, #083f77 0%, #0e5aa7 55%, #1470c4 100%);
  color: #fff; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 78% 22%, rgba(245,166,35,.28), transparent 45%),
    radial-gradient(circle at 12% 78%, rgba(255,255,255,.10), transparent 40%);
}
/* 工业感网格底纹 */
.hero::after {
  content: ""; position: absolute; inset: 0; opacity: .16;
  background-image:
    linear-gradient(rgba(255,255,255,.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.5) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to right, rgba(0,0,0,.5), transparent 70%);
}
.hero .container { position: relative; z-index: 2; padding-top: 70px; padding-bottom: 70px; }
.hero-content { max-width: 660px; }
.hero .tag {
  display: inline-block; padding: 5px 14px; margin-bottom: 22px;
  border: 1px solid rgba(255,255,255,.4); border-radius: 40px;
  font-size: 13px; letter-spacing: 1px; color: rgba(255,255,255,.9);
}
.hero h1 { font-size: 42px; line-height: 1.35; font-weight: 700; margin-bottom: 20px; letter-spacing: 1px; }
.hero h1 em { font-style: normal; color: var(--c-accent); }
.hero p.lead { font-size: 16.5px; color: rgba(255,255,255,.86); margin-bottom: 32px; max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 30px; border-radius: var(--radius);
  font-size: 15px; font-weight: 600; border: 1px solid transparent;
  transition: all .22s; letter-spacing: .5px;
}
.btn-primary { background: var(--c-accent); color: #1a1a1a; }
.btn-primary:hover { background: var(--c-accent-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(245,166,35,.35); }
.btn-outline { border-color: rgba(255,255,255,.55); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.btn-blue { background: var(--c-primary); color: #fff; }
.btn-blue:hover { background: var(--c-primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(14,90,167,.3); }
.btn-ghost { background: #fff; color: var(--c-primary); border-color: var(--c-border); }
.btn-ghost:hover { border-color: var(--c-primary); }

/* Hero 侧数据卡 */
.hero-stats {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: rgba(255,255,255,.16); border-top: 1px solid rgba(255,255,255,.18);
}
.hero-stats div { background: rgba(8,63,119,.55); padding: 26px 16px; text-align: center; }
.hero-stats b { display: block; font-size: 30px; color: var(--c-accent); line-height: 1.2; }
.hero-stats span { font-size: 13px; color: rgba(255,255,255,.8); }

/* ---------- 通用区块 ---------- */
.section { padding: 76px 0; }
.section-soft { background: var(--c-bg-soft); }
.section-deep { background: var(--c-bg-deep); color: #fff; }

.sec-head { text-align: center; max-width: 720px; margin: 0 auto 46px; }
.sec-head .eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--c-primary); margin-bottom: 10px; font-weight: 600;
}
.section-deep .sec-head .eyebrow { color: var(--c-accent); }
.sec-head h2 { font-size: 30px; color: var(--c-dark); line-height: 1.4; margin-bottom: 14px; font-weight: 700; }
.section-deep .sec-head h2 { color: #fff; }
.sec-head p { color: var(--c-text-light); font-size: 15px; }
.section-deep .sec-head p { color: rgba(255,255,255,.72); }
.sec-head::after {
  content: ""; display: block; width: 46px; height: 3px; background: var(--c-accent);
  margin: 18px auto 0; border-radius: 2px;
}
.sec-head-left { text-align: left; margin-left: 0; }
.sec-head-left::after { margin-left: 0; }

/* ---------- 业务卡片 ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 32px 26px; transition: all .28s; position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.card::after {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 0;
  background: var(--c-accent); transition: width .3s;
}
.card:hover::after { width: 100%; }
.card .icon {
  width: 52px; height: 52px; border-radius: var(--radius); margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(14,90,167,.10), rgba(14,90,167,.05));
  display: grid; place-items: center; color: var(--c-primary);
}
.card .icon svg { width: 26px; height: 26px; fill: currentColor; }
.card h3 { font-size: 17px; color: var(--c-dark); margin-bottom: 10px; font-weight: 600; }
.card p { font-size: 14px; color: var(--c-text-light); line-height: 1.85; }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: s; }
.step { position: relative; padding-top: 34px; }
.step::before {
  content: counter(s); counter-increment: s;
  position: absolute; top: 0; left: 0;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--c-accent); color: var(--c-dark);
  display: grid; place-items: center; font-weight: 700; font-size: 18px;
}
.step h4 { font-size: 16px; color: var(--c-dark); margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--c-text-light); }
.section-deep .step h4 { color: #fff; }
.section-deep .step p { color: rgba(255,255,255,.7); }
.step:not(:last-child)::after {
  content: ""; position: absolute; top: 22px; left: 60px; right: -10px; height: 1px;
  background: repeating-linear-gradient(90deg, rgba(255,255,255,.4) 0 6px, transparent 6px 12px);
}

/* ---------- 优势列表 ---------- */
.adv-list { display: grid; gap: 14px; }
.adv-item { display: flex; gap: 14px; align-items: flex-start; padding: 16px 18px;
  background: rgba(255,255,255,.06); border-left: 3px solid var(--c-accent); border-radius: 0 var(--radius) var(--radius) 0; }
.adv-item b { display: block; color: var(--c-dark); font-size: 15px; margin-bottom: 3px; }
.adv-item span { font-size: 13.5px; color: var(--c-text-light); }
.section-deep .adv-item { background: rgba(255,255,255,.06); }
.section-deep .adv-item b { color: #fff; }
.section-deep .adv-item span { color: rgba(255,255,255,.72); }

/* ---------- 资质 ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cert {
  background: #fff; border: 1px dashed var(--c-border); border-radius: var(--radius);
  padding: 24px 18px; text-align: center; transition: .25s;
}
.cert:hover { border-color: var(--c-primary); box-shadow: var(--shadow-sm); }
.cert .badge {
  width: 58px; height: 58px; margin: 0 auto 14px; border-radius: 50%;
  background: var(--c-bg-soft); display: grid; place-items: center;
  color: var(--c-primary); font-size: 22px; font-weight: 700;
}
.cert h4 { font-size: 14px; color: var(--c-dark); margin-bottom: 4px; }
.cert p { font-size: 12.5px; color: var(--c-text-light); }

/* ---------- 新闻（紧凑列表版式 v16） ---------- */
.news-list { display: block; background: #fff; border-top: 2px solid var(--c-primary); }
.news-item {
  display: flex; align-items: center; gap: 14px; padding: 12px 10px;
  border-bottom: 1px dashed #e4e9f0; transition: background .2s, color .2s;
}
.news-item:hover { background: #f7f9fc; }
.news-item:hover .news-title { color: var(--c-primary); }
.news-body { flex: 1; min-width: 0; display: flex; align-items: center; gap: 18px; }
.news-title { flex: 1; min-width: 0; font-size: 14px; color: var(--c-dark); font-weight: 500;
  line-height: 1.6; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin: 0; }
.news-title .tag {
  display: inline-block; padding: 1px 7px; margin-right: 7px;
  border-radius: 3px; background: #eaf2fb; color: var(--c-primary);
  font-size: 11.5px; font-weight: 500; vertical-align: 1px;
}
.news-time { flex: none; width: 86px; text-align: right; margin: 0;
  font-size: 13px; color: var(--c-text-light); letter-spacing: .2px; }
.news-arrow { flex: none; color: #c6cfdb; font-size: 17px; line-height: 1; }

/* ---------- 微信咨询 ---------- */
.wx-copy {
  display: inline-block; margin-top: 6px; padding: 5px 12px; cursor: pointer;
  font-size: 12.5px; color: var(--c-primary); background: #eaf2fb;
  border: 1px solid #cfe0f4; border-radius: 4px; transition: .2s;
}
.wx-copy:hover { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }
.wx-tip { display: block; margin-top: 6px; font-size: 12.5px; color: var(--c-text-light); }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-item { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); overflow: hidden; transition: .28s; }
.case-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.case-thumb { height: 168px; position: relative; display: grid; place-items: center; color: rgba(255,255,255,.9); font-size: 14px; letter-spacing: 1px; }
.case-thumb.t1 { background: linear-gradient(135deg, #0e5aa7, #1470c4); }
.case-thumb.t2 { background: linear-gradient(135deg, #0b2c47, #0e5aa7); }
.case-thumb.t3 { background: linear-gradient(135deg, #1d7a6b, #0e5aa7); }
.case-thumb.t4 { background: linear-gradient(135deg, #7a5c1d, #0e5aa7); }
.case-thumb.t5 { background: linear-gradient(135deg, #5c3f8a, #0e5aa7); }
.case-thumb.t6 { background: linear-gradient(135deg, #1d4a7a, #0b2c47); }
.case-info { padding: 20px 22px 24px; }
.case-info .tagline { font-size: 12px; color: var(--c-accent-dark); font-weight: 600; margin-bottom: 6px; }
.case-info h4 { font-size: 16px; color: var(--c-dark); margin-bottom: 8px; }
.case-info p { font-size: 13.5px; color: var(--c-text-light); }

/* ---------- 参数表 ---------- */
.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; background: #fff; font-size: 14px; }
table.data th, table.data td { padding: 14px 16px; border: 1px solid var(--c-border); text-align: left; }
table.data thead th { background: var(--c-primary); color: #fff; font-weight: 600; white-space: nowrap; }
table.data tbody tr:nth-child(even) { background: var(--c-bg-soft); }
table.data tbody tr:hover { background: #eef4fb; }

/* ---------- 联系/表单 ---------- */
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.info-item { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--c-border); }
.info-item:last-of-type { border-bottom: 0; }
.info-item .ic { flex: none; width: 44px; height: 44px; border-radius: var(--radius);
  background: var(--c-bg-soft); display: grid; place-items: center; color: var(--c-primary); font-size: 18px; }
.info-item b { display: block; font-size: 13px; color: var(--c-text-light); margin-bottom: 3px; font-weight: 400; }
.info-item p { font-size: 15px; color: var(--c-dark); }

.form-box { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13.5px; color: var(--c-text); margin-bottom: 7px; font-weight: 500; }
.field label i { color: #d64545; font-style: normal; }
.field input, .field select, .field textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--c-border); border-radius: var(--radius);
  font-size: 14px; font-family: inherit; color: var(--c-text); background: #fff; transition: .2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 0; border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(14,90,167,.10);
}
.field textarea { min-height: 116px; resize: vertical; }
.form-tip { font-size: 12.5px; color: var(--c-text-light); margin-top: 12px; }
.form-msg { display: none; margin-top: 14px; padding: 12px 16px; border-radius: var(--radius); font-size: 14px; }
.form-msg.ok { display: block; background: #eaf6ee; color: #207a45; border: 1px solid #bfe3cb; }
.form-msg.err { display: block; background: #fdeceb; color: #b03030; border: 1px solid #f5c6c4; }

/* ---------- 页面头图 ---------- */
.page-banner {
  background: linear-gradient(135deg, #083f77, #0e5aa7);
  color: #fff; padding: 66px 0 60px; position: relative; overflow: hidden;
}
.page-banner::after {
  content: ""; position: absolute; inset: 0; opacity: .14;
  background-image: linear-gradient(90deg, rgba(255,255,255,.6) 1px, transparent 1px);
  background-size: 60px 60px;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { font-size: 32px; margin-bottom: 10px; font-weight: 700; letter-spacing: .5px; }
.page-banner p { color: rgba(255,255,255,.8); font-size: 15px; }
.breadcrumb { font-size: 13px; color: rgba(255,255,255,.7); margin-bottom: 12px; }
.breadcrumb a:hover { color: var(--c-accent); }

/* ---------- 内容排版 ---------- */
.prose h3 { font-size: 20px; color: var(--c-dark); margin: 34px 0 14px; font-weight: 600;
  padding-left: 12px; border-left: 4px solid var(--c-accent); }
.prose h4 { font-size: 16px; color: var(--c-dark); margin: 24px 0 10px; }
.prose p { margin-bottom: 14px; color: var(--c-text); font-size: 15px; }
.prose ul.tick { margin: 14px 0 22px; }
.prose ul.tick li { position: relative; padding-left: 26px; margin-bottom: 9px; font-size: 14.5px; }
.prose ul.tick li::before {
  content: ""; position: absolute; left: 6px; top: 11px; width: 7px; height: 7px;
  background: var(--c-accent); border-radius: 50%;
}
.prose .lead-p { font-size: 16px; color: var(--c-dark); line-height: 1.9; }

/* ---------- CTA ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--c-dark), var(--c-primary));
  color: #fff; padding: 54px 0; text-align: center; position: relative; overflow: hidden;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(245,166,35,.22), transparent 60%);
}
.cta-band .container { position: relative; z-index: 2; }
.cta-band h2 { font-size: 27px; margin-bottom: 12px; font-weight: 700; }
.cta-band p { color: rgba(255,255,255,.82); margin-bottom: 26px; font-size: 15px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--c-dark); color: rgba(255,255,255,.7); padding: 56px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 36px; padding-bottom: 40px; }
.footer h5 { color: #fff; font-size: 15px; margin-bottom: 18px; font-weight: 600; }
.footer p { margin-bottom: 12px; line-height: 1.9; font-size: 13.5px; }
.footer ul li { margin-bottom: 9px; font-size: 13.5px; }
.footer ul li a:hover { color: var(--c-accent); }
.footer .logo-text strong { color: #fff; }
.footer .logo-text small { color: rgba(255,255,255,.5); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12); padding: 18px 0;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px;
  font-size: 13px; color: rgba(255,255,255,.55);
}
.footer-bottom a:hover { color: var(--c-accent); }

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed; right: 26px; bottom: 30px; width: 46px; height: 46px; border-radius: 50%;
  background: var(--c-primary); color: #fff; border: 0; box-shadow: var(--shadow-md);
  display: grid; place-items: center; font-size: 20px; z-index: 900;
  opacity: 0; visibility: hidden; transition: .28s;
}
.to-top.show { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--c-primary-dark); transform: translateY(-3px); }

/* ---------- 滚动出现动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 课程卡片 ---------- */
.course-card {
  background: var(--c-bg); border: 1px solid var(--c-border); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .3s ease, box-shadow .3s ease;
}
.course-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.course-cover { height: 168px; overflow: hidden; background: var(--c-bg-soft); }
.course-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.course-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.course-tag {
  align-self: flex-start; font-size: 12px; color: var(--c-primary);
  background: rgba(14,90,167,.08); border-radius: 4px; padding: 3px 10px; margin-bottom: 10px;
}
.course-body h3 { font-size: 17px; color: var(--c-dark); font-weight: 600; line-height: 1.5; margin-bottom: 8px; }
.course-meta { font-size: 13px; color: var(--c-text-light); margin-bottom: 10px; }
.course-desc { font-size: 13.5px; color: var(--c-text-light); line-height: 1.85; flex: 1; }
.course-foot {
  margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--c-border);
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.course-price { color: #d92b2b; font-size: 19px; font-weight: 700; }
.course-price small { font-size: 12px; font-weight: 400; color: var(--c-text-light); margin-left: 4px; }
.course-btn {
  font-size: 13.5px; color: var(--c-primary); font-weight: 600; white-space: nowrap;
}
.course-btn:hover { color: var(--c-primary-dark); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .grid-4, .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 28px 20px; }
  .step:not(:last-child)::after { display: none; }
  .hero h1 { font-size: 34px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .container { padding: 0 18px; }
  .topbar { display: none; }
  .nav-toggle { display: block; }
  .nav {
    position: absolute; top: 74px; left: 0; right: 0; background: #fff;
    flex-direction: column; align-items: stretch; gap: 0; padding: 8px 0;
    border-bottom: 1px solid var(--c-border); box-shadow: var(--shadow-md);
    display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: 13px 24px; border-radius: 0; }
  .nav a.active::after { display: none; }
  .hero { min-height: auto; }
  .hero h1 { font-size: 27px; }
  .hero p.lead { font-size: 15px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 52px 0; }
  .sec-head h2 { font-size: 24px; }
  .grid-2, .grid-3, .grid-4, .grid-6, .case-grid, .cert-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; gap: 34px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .page-banner h1 { font-size: 25px; }
  .news-item { flex-wrap: wrap; gap: 10px; padding: 14px 4px; }
  .news-body { flex-direction: column; align-items: flex-start; gap: 6px; }
  .news-title { white-space: normal; font-size: 14.5px; }
  .news-time { width: auto; text-align: left; }
  .news-arrow { display: none; }
}

/* ---------- 公众号二维码（v14） ---------- */

.footer-qr { margin-top: 14px; display: flex; align-items: center; gap: 12px; }
.footer-qr img { width: 88px; height: 88px; background: #fff; border-radius: 8px; padding: 5px; flex: none; }
.footer-qr span { font-size: 12.5px; color: rgba(255,255,255,.75); line-height: 1.7; }

/* ---------- 联系页公众号版块（v15） ---------- */
.gzh-hero { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.gzh-hero img { width: 220px; height: 220px; flex: none; background: #fff;
  border: 1px solid var(--c-border); border-radius: 14px; padding: 8px; }
.gzh-info { flex: 1; min-width: 220px; }
.gzh-info b { font-size: 18px; color: var(--c-dark); }
.gzh-info .gzh-sub { font-size: 13px; color: var(--c-text-light); margin: 4px 0 12px; }
.gzh-info ul { list-style: none; margin: 0; padding: 0; }
.gzh-info ul li { font-size: 13.5px; line-height: 1.7; margin-bottom: 9px; padding-left: 16px; position: relative; }
.gzh-info ul li::before { content: ""; position: absolute; left: 0; top: 9px; width: 7px; height: 7px;
  border-radius: 50%; background: var(--c-accent); }
.gzh-steps { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.gzh-steps span { font-size: 13px; color: var(--c-dark); background: var(--c-soft, #f4f7fb);
  border: 1px solid var(--c-border); border-radius: 999px; padding: 7px 14px; }