/* zhengzhou.1766.cn 主样式 */
:root {
  --primary: #1a4d8c;
  --primary-light: #2e6db5;
  --accent: #c9a063;
  --text: #2a2a2a;
  --text-light: #6b6b6b;
  --bg: #ffffff;
  --bg-soft: #f6f8fb;
  --border: #e3e8ef;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --max-width: 1180px;
  --radius: 10px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
}

a { color: var(--primary); text-decoration: none; transition: color .15s; }
a:hover { color: var(--primary-light); }

img { max-width: 100%; height: auto; display: block; }

/* 顶栏 */
.topbar {
  background: var(--primary);
  color: #fff;
  padding: 8px 0;
  font-size: 13px;
}
.topbar .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar a { color: #fff; }
.topbar .tel { font-weight: 600; }

/* 导航 */
.header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand .logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
}
.brand .sub {
  font-size: 13px;
  color: var(--text-light);
}
.nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}
.nav a {
  color: var(--text);
  font-size: 15px;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--primary); border-bottom-color: var(--primary); }

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

/* Hero */
.hero {
  background: linear-gradient(135deg, #f0f5fb 0%, #e6eef7 100%);
  padding: 60px 0;
  text-align: center;
}
.hero h1 {
  font-size: 36px;
  color: var(--primary);
  margin-bottom: 16px;
  line-height: 1.3;
}
.hero p.lead {
  font-size: 17px;
  color: var(--text-light);
  max-width: 760px;
  margin: 0 auto 24px;
}
.hero .cta {
  display: inline-flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}
.hero .btn {
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); color: #fff; }
.btn-ghost { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
.btn-ghost:hover { background: var(--bg-soft); color: var(--primary); }

/* 章节 */
.section {
  padding: 56px 0;
}
.section.alt { background: var(--bg-soft); }
.section h2 {
  font-size: 28px;
  text-align: center;
  margin-bottom: 12px;
  color: var(--text);
}
.section .desc {
  text-align: center;
  color: var(--text-light);
  max-width: 720px;
  margin: 0 auto 36px;
  font-size: 15px;
}

/* 卡片网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .2s;
  display: flex;
  flex-direction: column;
}
.card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  border-color: var(--primary);
}
.card .thumb {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  background: var(--bg-soft);
}
.card .body {
  padding: 18px 20px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--text);
}
.card p {
  color: var(--text-light);
  font-size: 14px;
  flex: 1;
  margin-bottom: 14px;
}
.card .more {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
}

/* 文章页 */
.article {
  max-width: 880px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}
.article .breadcrumb {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 16px;
}
.article h1 {
  font-size: 32px;
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 18px;
}
.article .meta {
  display: flex;
  gap: 16px;
  color: var(--text-light);
  font-size: 13px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}
.article figure {
  margin: 28px 0;
}
.article fig {
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
  padding: 8px;
  background: var(--bg-soft);
  border-radius: 4px;
  margin-top: 8px;
}
.article h2 {
  font-size: 24px;
  margin: 36px 0 14px;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
  color: var(--text);
}
.article h3 {
  font-size: 19px;
  margin: 28px 0 12px;
  color: var(--primary);
}
.article p {
  margin-bottom: 16px;
  text-indent: 2em;
  font-size: 16px;
  line-height: 1.85;
}
.article ul, .article ol {
  margin: 12px 0 16px 28px;
}
.article li {
  margin-bottom: 8px;
  line-height: 1.8;
}
.article blockquote {
  background: var(--bg-soft);
  border-left: 4px solid var(--accent);
  padding: 14px 20px;
  margin: 20px 0;
  color: var(--text-light);
  font-size: 15px;
  border-radius: 0 6px 6px 0;
}
.article table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14px;
}
.article th, .article td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.article th {
  background: var(--bg-soft);
  font-weight: 600;
  color: var(--primary);
}
.article strong { color: var(--primary); }
.article .faq {
  margin-top: 36px;
}
.article .faq-item {
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 12px;
  overflow: hidden;
}
.article .faq-q {
  background: var(--bg-soft);
  padding: 12px 16px;
  font-weight: 600;
  color: var(--primary);
}
.article .faq-a {
  padding: 14px 16px;
  color: var(--text);
}
.article .disclaimer {
  background: #fff8e1;
  border: 1px solid #f0d68c;
  padding: 16px 20px;
  border-radius: 6px;
  margin: 36px 0;
  font-size: 14px;
  color: #6b5300;
}
.article .contact-box {
  background: linear-gradient(135deg, #1a4d8c 0%, #2e6db5 100%);
  color: #fff;
  padding: 28px;
  border-radius: var(--radius);
  margin-top: 36px;
  text-align: center;
}
.article .contact-box h3 { color: #fff; margin-bottom: 12px; font-size: 20px; }
.article .contact-box .tel { font-size: 26px; font-weight: 700; margin: 8px 0; }

/* footer */
.footer {
  background: #1a2a3a;
  color: #b8c4d4;
  padding: 40px 0 20px;
  font-size: 14px;
}
.footer .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}
.footer .grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
  margin-bottom: 28px;
}
.footer h4 { color: #fff; margin-bottom: 14px; font-size: 15px; }
.footer a { color: #b8c4d4; }
.footer a:hover { color: #fff; }
.footer ul { list-style: none; }
.footer li { margin-bottom: 6px; }
.footer .copy {
  border-top: 1px solid #2a3a4a;
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: #6b7a8a;
}

/* 内链列表 */
.related {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.related h3 {
  font-size: 18px;
  margin-bottom: 14px;
  color: var(--text);
}
.related ul {
  list-style: none;
  margin-left: 0;
}
.related li {
  margin-bottom: 8px;
  padding-left: 16px;
  position: relative;
}
.related li:before {
  content: "→";
  color: var(--accent);
  position: absolute;
  left: 0;
}

@media (max-width: 768px) {
  .hero h1 { font-size: 26px; }
  .hero { padding: 40px 0; }
  .section { padding: 36px 0; }
  .section h2 { font-size: 22px; }
  .article h1 { font-size: 24px; }
  .article h2 { font-size: 20px; }
  .nav { gap: 14px; }
  .nav a { font-size: 14px; }
  .header .inner { flex-wrap: wrap; gap: 12px; }
}