/* ==========================================================================
   达聚网天津分站 www.liaqiu.com 全站样式
   设计基调：达聚品牌橙 + 深蓝商务 + 白/浅灰底
   ========================================================================== */

/* ---------- 基础与变量 ---------- */
:root {
  --orange: #f26b1d;
  --orange-dark: #d9580f;
  --orange-deep: #b84708;
  --orange-light: #fff3ea;
  --navy: #12263a;
  --navy-2: #1d3a5c;
  --blue-soft: #eef4fb;
  --text: #23303e;
  --text-2: #5a6b7c;
  --text-3: #8a97a5;
  --bg: #ffffff;
  --bg-2: #f6f8fb;
  --border: #e6ebf1;
  --green: #16a34a;
  --red: #dc2626;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(18, 38, 58, .08);
  --shadow-lg: 0 12px 40px rgba(18, 38, 58, .14);
  --container: 1200px;
}

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

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
}

img { max-width: 100%; display: block; }
a { color: var(--orange); text-decoration: none; transition: color .2s; }
a:hover { color: var(--orange-dark); }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { line-height: 1.35; font-weight: 700; color: var(--navy); }
h1 { font-size: 34px; }
h2 { font-size: 26px; }
h3 { font-size: 20px; }
h4 { font-size: 17px; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- 顶部公告条 ---------- */
.topbar {
  background: var(--navy);
  color: #cfe0f2;
  font-size: 13.5px;
  padding: 8px 0;
}
.topbar .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: center; }
.topbar a { color: #ffd9bd; }
.topbar a:hover { color: #fff; }
.topbar .topbar-main { color: #fff; }
.topbar .topbar-main strong { color: var(--orange); }

/* ---------- 头部导航 ---------- */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 1px 6px rgba(18, 38, 58, .05);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-logo { width: 42px; height: 42px; border-radius: 10px; background: var(--orange); display: flex; align-items: center; justify-content: center; color: #fff; }
.brand-name { font-size: 22px; font-weight: 800; color: var(--navy); line-height: 1.1; }
.brand-name span { color: var(--orange); }
.brand-sub { font-size: 12px; color: var(--text-2); margin-top: 2px; }

.main-nav { flex: 1; display: flex; justify-content: flex-end; }
.main-nav ul { display: flex; gap: 4px; }
.main-nav a {
  display: block; padding: 8px 14px; border-radius: 8px;
  color: var(--text); font-size: 15.5px; font-weight: 500;
}
.main-nav a:hover { color: var(--orange); background: var(--orange-light); }
.main-nav a.active { color: var(--orange); background: var(--orange-light); font-weight: 700; }

.header-cta { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 22px; border-radius: 8px; font-size: 15px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: all .2s;
  line-height: 1.4;
}
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-dark); color: #fff; }
.btn-outline { border-color: var(--orange); color: var(--orange); background: #fff; }
.btn-outline:hover { background: var(--orange-light); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--navy-2); color: #fff; }
.btn-lg { padding: 13px 30px; font-size: 16.5px; }
.btn-block { width: 100%; }

.nav-toggle { display: none; background: none; border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; cursor: pointer; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--navy); }
.hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .38; }
.hero-inner { position: relative; padding: 84px 0 92px; color: #fff; }
.hero .crumb { color: #bcd2e8; }
.hero .crumb a { color: #ffd9bd; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(242, 107, 29, .18); color: #ffc9a3;
  border: 1px solid rgba(255, 179, 128, .35);
  padding: 6px 14px; border-radius: 100px; font-size: 13.5px; font-weight: 600;
  margin-bottom: 18px;
}
.hero-inner h1 { color: #fff; font-size: 42px; letter-spacing: .5px; }
.hero-inner h1 .hl { color: var(--orange); }
.hero-desc { color: #d6e4f3; font-size: 17px; max-width: 760px; margin-top: 16px; }
.hero-actions { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; margin-top: 44px; flex-wrap: wrap; }
.hero-stats .num { font-size: 30px; font-weight: 800; color: #fff; }
.hero-stats .num em { font-style: normal; color: var(--orange); }
.hero-stats .lbl { font-size: 13.5px; color: #a9bfd6; margin-top: 2px; }

/* ---------- 区块通用 ---------- */
.section { padding: 66px 0; }
.section-alt { background: var(--bg-2); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 40px; }
.section-head .tag {
  display: inline-block; color: var(--orange); font-size: 14px; font-weight: 700;
  letter-spacing: 2px; margin-bottom: 10px;
}
.section-head h2 { font-size: 30px; }
.section-head p { color: var(--text-2); margin-top: 12px; }
.section-head .more { display: block; margin-top: 14px; font-size: 14.5px; }

/* ---------- 服务卡片 ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.svc-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 22px; transition: all .25s; display: flex; flex-direction: column;
}
.svc-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #f6c39d; }
.svc-icon {
  width: 52px; height: 52px; border-radius: 12px; background: var(--orange-light);
  color: var(--orange); display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
}
.svc-card h3 { font-size: 18px; margin-bottom: 8px; }
.svc-card p { color: var(--text-2); font-size: 14.5px; flex: 1; }
.svc-card .svc-link { margin-top: 14px; font-size: 14px; font-weight: 600; }

/* ---------- 服务列表（栏目页） ---------- */
.svc-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.svc-item {
  display: flex; align-items: flex-start; gap: 14px;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 18px 18px; transition: all .2s;
}
.svc-item:hover { border-color: var(--orange); box-shadow: var(--shadow); }
.svc-item .flag { flex-shrink: 0; width: 34px; height: 34px; border-radius: 8px; background: var(--navy); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 15px; }
.svc-item .info h4 { font-size: 15.5px; }
.svc-item .info p { font-size: 13px; color: var(--text-2); margin-top: 3px; }
.svc-item .info a { color: var(--text); }
.svc-item .info a:hover { color: var(--orange); }
.svc-item .badge {
  display: inline-block; font-size: 11.5px; color: var(--orange); background: var(--orange-light);
  border-radius: 4px; padding: 1px 7px; margin-left: 8px; vertical-align: 2px; font-weight: 600;
}

/* ---------- 数据统计 ---------- */
.stats-band { background: var(--navy); color: #fff; }
.stats-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; text-align: center; padding: 8px 0; }
.stats-grid .num { font-size: 34px; font-weight: 800; color: var(--orange); }
.stats-grid .lbl { font-size: 14px; color: #bcd2e8; margin-top: 4px; }

/* ---------- 流程步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step {
  position: relative; background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 20px 22px; text-align: center;
}
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-size: 15px; font-weight: 800; color: var(--orange);
  background: var(--orange-light); width: 34px; height: 34px; line-height: 34px;
  border-radius: 50%; display: block; margin: 0 auto 14px;
}
.step h4 { margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text-2); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 12px; background: #fff; overflow: hidden; }
.faq-item summary {
  cursor: pointer; padding: 16px 20px; font-weight: 600; font-size: 15.5px; color: var(--navy);
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 20px; color: var(--orange); font-weight: 700; transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body { padding: 0 20px 18px; color: var(--text-2); font-size: 15px; }

/* ---------- CTA 区 ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--orange-dark), var(--orange));
  color: #fff; padding: 52px 0; text-align: center;
}
.cta-band h2 { color: #fff; font-size: 28px; }
.cta-band p { color: #ffe9da; margin-top: 10px; max-width: 700px; margin-left: auto; margin-right: auto; }
.cta-actions { display: flex; gap: 14px; justify-content: center; margin-top: 26px; flex-wrap: wrap; }
.btn-white { background: #fff; color: var(--orange); }
.btn-white:hover { background: var(--orange-light); color: var(--orange-dark); }
.btn-ghost-light { border: 1px solid rgba(255,255,255,.7); color: #fff; background: transparent; }
.btn-ghost-light:hover { background: rgba(255,255,255,.14); color: #fff; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy); color: #b7c9db; padding: 56px 0 0; font-size: 14.5px; }
.footer-grid { display: grid; grid-template-columns: 2.2fr 1fr 1fr 1.4fr; gap: 36px; padding-bottom: 40px; }
.footer-brand .brand-name { color: #fff; }
.footer-brand p { margin-top: 14px; color: #9db3c8; font-size: 14px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer ul li { margin-bottom: 9px; }
.footer a { color: #9db3c8; }
.footer a:hover { color: var(--orange); }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 12px; align-items: flex-start; }
.footer-contact svg { flex-shrink: 0; margin-top: 4px; color: var(--orange); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding: 16px 0; text-align: center;
  font-size: 13px; color: #7f96ab;
}
.footer-bottom a { color: #9db3c8; }
.footer-bottom a:hover { color: #fff; }

/* ---------- 面包屑 ---------- */
.breadcrumb { font-size: 14px; color: var(--text-2); margin-bottom: 22px; display: flex; flex-wrap: wrap; gap: 6px; }
.breadcrumb a { color: var(--text-2); }
.breadcrumb a:hover { color: var(--orange); }
.breadcrumb .sep { color: var(--text-3); }

/* ---------- 页面标题区（内页） ---------- */
.page-hero { background: var(--navy); padding: 46px 0; color: #fff; }
.page-hero h1 { color: #fff; font-size: 30px; }
.page-hero p { color: #c2d5e9; margin-top: 10px; max-width: 800px; }

/* ---------- 通用正文排版 ---------- */
.prose { color: var(--text); font-size: 15.5px; }
.prose h2 { font-size: 22px; margin: 34px 0 14px; padding-left: 12px; border-left: 4px solid var(--orange); }
.prose h3 { font-size: 18px; margin: 26px 0 10px; }
.prose p { margin-bottom: 14px; }
.prose ul, .prose ol { margin: 0 0 16px; padding-left: 6px; }
.prose li { margin-bottom: 8px; padding-left: 22px; position: relative; }
.prose ul li::before { content: ""; position: absolute; left: 4px; top: 11px; width: 6px; height: 6px; border-radius: 50%; background: var(--orange); }
.prose ol { counter-reset: ol; }
.prose ol li { counter-increment: ol; }
.prose ol li::before { content: counter(ol) "."; position: absolute; left: 0; top: 0; font-weight: 700; color: var(--orange); }
.prose .notice {
  background: var(--orange-light); border-left: 4px solid var(--orange);
  padding: 14px 18px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 18px 0;
  font-size: 14.5px; color: #7a3b10;
}
.prose table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14.5px; }
.prose th, .prose td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
.prose th { background: var(--navy); color: #fff; font-weight: 600; }
.prose tr:nth-child(even) td { background: var(--bg-2); }
.prose strong { color: var(--navy); }

/* ---------- 信息卡片 ---------- */
.info-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.info-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.info-card h3 { display: flex; align-items: center; gap: 10px; font-size: 17px; margin-bottom: 12px; }
.info-card h3 svg { color: var(--orange); flex-shrink: 0; }
.info-card p, .info-card li { color: var(--text-2); font-size: 14.5px; }
.info-card li { padding-left: 18px; position: relative; margin-bottom: 8px; }
.info-card li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 6px; height: 6px; border-radius: 50%; background: var(--orange); }

/* ---------- 文章列表 ---------- */
.article-list { display: grid; gap: 18px; }
.article-item {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px 24px; transition: all .2s; display: block;
}
.article-item:hover { border-color: var(--orange); box-shadow: var(--shadow); }
.article-item .art-meta { font-size: 13px; color: var(--text-3); margin-bottom: 8px; }
.article-item h3 { font-size: 18px; }
.article-item p { color: var(--text-2); font-size: 14.5px; margin-top: 8px; }

/* ---------- 双栏布局 ---------- */
.layout-2col { display: grid; grid-template-columns: 1fr 340px; gap: 34px; align-items: start; }
.aside-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; margin-bottom: 18px;
}
.aside-card h3 { font-size: 16px; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 2px solid var(--orange-light); }
.aside-card ul li { margin-bottom: 9px; font-size: 14.5px; }
.aside-card ul li a { color: var(--text-2); }
.aside-card ul li a:hover { color: var(--orange); }

/* ---------- 联系方式 ---------- */
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.contact-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; text-align: center;
}
.contact-card .c-icon { width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 50%; background: var(--orange-light); color: var(--orange); display: flex; align-items: center; justify-content: center; }
.contact-card h3 { font-size: 16.5px; }
.contact-card p { color: var(--text-2); font-size: 14.5px; margin-top: 6px; }

/* ---------- 表单 ---------- */
.form-wrap { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 15px; font-family: inherit; color: var(--text); background: #fff;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--orange); box-shadow: 0 0 0 3px rgba(242,107,29,.12);
}
.form-tip { font-size: 13px; color: var(--text-3); margin-top: 6px; }

/* ---------- 404 ---------- */
.err-wrap { text-align: center; padding: 90px 0; }
.err-code { font-size: 96px; font-weight: 800; color: var(--orange-light); line-height: 1; }
.err-wrap h1 { margin: 10px 0 14px; }
.err-wrap p { color: var(--text-2); margin-bottom: 26px; }

/* ---------- 标签云 ---------- */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-cloud a {
  background: var(--bg-2); border: 1px solid var(--border); color: var(--text-2);
  padding: 6px 14px; border-radius: 100px; font-size: 13.5px;
}
.tag-cloud a:hover { background: var(--orange-light); border-color: var(--orange); color: var(--orange); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .svc-list { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 24px 12px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .info-cards { grid-template-columns: repeat(2, 1fr); }
  .contact-cards { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .layout-2col { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  body { font-size: 15px; }
  h1 { font-size: 27px; }
  h2 { font-size: 22px; }
  .hero-inner { padding: 56px 0 60px; }
  .hero-inner h1 { font-size: 30px; }
  .hero-stats { gap: 22px; }
  .hero-stats .num { font-size: 24px; }
  .section { padding: 46px 0; }
  .section-head h2 { font-size: 24px; }

  .header-inner { height: 62px; gap: 14px; }
  .main-nav {
    position: fixed; top: 0; right: -300px; width: 280px; height: 100vh;
    background: #fff; box-shadow: var(--shadow-lg); transition: right .3s;
    padding: 70px 20px 20px; z-index: 200;
  }
  .main-nav.open { right: 0; }
  .main-nav ul { flex-direction: column; gap: 2px; }
  .main-nav a { padding: 12px 14px; font-size: 16px; border-radius: 8px; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .header-cta .btn { padding: 8px 14px; font-size: 14px; }
  .nav-backdrop { position: fixed; inset: 0; background: rgba(18,38,58,.45); z-index: 150; display: none; }
  .nav-backdrop.show { display: block; }

  .svc-grid, .svc-list { grid-template-columns: 1fr; }
  .info-cards, .contact-cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .form-row { grid-template-columns: 1fr; }
  .prose table { display: block; overflow-x: auto; white-space: nowrap; }
  .cta-band h2 { font-size: 23px; }
}

/* ---------- 打印 ---------- */
@media print {
  .topbar, .site-header, .cta-band, .site-footer, .breadcrumb, .aside { display: none !important; }
  body { color: #000; }
  .prose table { white-space: normal; }
}