/* 2026 郑州企业建站行业观察报告 · 专题页样式
   设计约束：主色仅深蓝 + 砖橙两种；字体只用系统开源黑体栈，不加载任何外部字体 CDN；
   零第三方库、零外部图片，纯 CSS 几何纹理。 */

:root {
  --navy: #0B4F9C;
  --navy-deep: #083B78;
  --navy-ink: #062B57;
  --accent: #C9632B;
  --accent-soft: #FBF0E9;
  --ink: #16202E;
  --muted: #5B6878;
  --line: #E3E9F0;
  --soft: #F5F8FC;
  --white: #FFFFFF;
  --shadow: 0 12px 36px rgba(8, 59, 120, .10);
  --shadow-lg: 0 24px 64px rgba(6, 43, 87, .18);
  --font: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--navy); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--accent); }
img { max-width: 100%; }
.wrap { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }
.narrow { width: min(820px, calc(100% - 48px)); margin: 0 auto; }

/* ---------- 导航 ---------- */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-nav .wrap { display: flex; align-items: center; gap: 32px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; color: var(--navy-ink); white-space: nowrap; }
.brand-mark-img { display: block; height: 32px; width: auto; }
.brand-split { width: 1px; height: 18px; background: var(--line); }
.brand-tag { font-size: 13px; font-weight: 500; color: var(--muted); white-space: nowrap; }
.nav-links { margin-left: auto; display: flex; gap: 26px; align-items: center; }
.nav-links a { font-size: 14px; color: var(--muted); }
.nav-links a:hover { color: var(--navy); }
.nav-cta {
  border: 1px solid var(--navy); color: var(--navy) !important;
  padding: 7px 16px; border-radius: 6px; font-weight: 600;
  transition: background .2s ease, color .2s ease;
}
.nav-cta:hover { background: var(--navy); color: #fff !important; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(118deg, var(--navy-deep) 0%, var(--navy) 58%, #1263BC 100%);
  color: #fff;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    repeating-linear-gradient(0deg, rgba(255,255,255,.045) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.045) 0 1px, transparent 1px 48px);
  pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; right: -140px; top: -180px;
  width: 560px; height: 560px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.14);
  box-shadow: 0 0 0 70px rgba(255,255,255,.025), 0 0 0 140px rgba(255,255,255,.02);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 2; display: grid; grid-template-columns: 1.35fr .65fr; gap: 56px; align-items: center; padding: 76px 0 104px; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: .08em; color: #BBD6F5;
  border-left: 3px solid var(--accent); padding-left: 12px; margin-bottom: 24px;
}
.hero h1 { margin: 0; font-size: clamp(30px, 3.6vw, 44px); line-height: 1.32; font-weight: 700; letter-spacing: -.01em; }
.hero-tagline { margin: 14px 0 0; font-size: 20px; font-weight: 500; color: #FFD9BF; letter-spacing: .02em; }
.hero-sub { margin: 14px 0 0; font-size: 16px; color: #D6E6F8; max-width: 580px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px; margin: 28px 0 34px; }
.chip {
  font-size: 13px; color: #EAF3FF; border: 1px solid rgba(255,255,255,.28);
  border-radius: 999px; padding: 5px 14px; background: rgba(255,255,255,.06);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 7px; font-size: 15px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; font-family: var(--font);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 22px rgba(201, 99, 43, .28); }
.btn-primary:hover { background: #B4541F; color: #fff; }
.btn-ghost { border-color: rgba(255,255,255,.5); color: #fff; background: transparent; }
.btn-ghost:hover { background: rgba(255,255,255,.12); color: #fff; }
.btn-outline { border-color: var(--navy); color: var(--navy); background: #fff; }
.btn-outline:hover { background: var(--soft); color: var(--navy); }

/* 报告封面造型（纯 CSS，无图片） */
.cover {
  justify-self: end; width: 268px; aspect-ratio: 3 / 4.1;
  background: #fff; color: var(--navy-ink);
  border-radius: 3px; padding: 30px 26px;
  box-shadow: var(--shadow-lg); transform: rotate(2.5deg);
  display: flex; flex-direction: column; position: relative;
  transition: transform .35s ease;
}
.cover:hover { transform: rotate(0deg) translateY(-6px); }
.cover::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 9px; background: var(--accent); }
.cover-label { font-size: 11px; letter-spacing: .16em; color: var(--accent); font-weight: 700; }
.cover-rule { width: 46px; height: 3px; background: var(--navy); margin: 22px 0 26px; }
.cover h2 { font-size: 25px; line-height: 1.45; margin: 0; font-weight: 700; }
.cover p { font-size: 12px; color: var(--muted); margin: 14px 0 0; }
.cover-foot { margin-top: auto; border-top: 1px solid var(--line); padding-top: 16px; font-size: 11px; color: var(--muted); line-height: 1.7; }

/* ---------- 演示数据提示 ---------- */
.demo-banner {
  background: #FFF6E5; border-bottom: 1px solid #F0D9A8; color: #7A5312;
  font-size: 14px; padding: 11px 0; text-align: center;
}
.demo-banner strong { color: #8A4B0D; }

/* ---------- 关键数字 ---------- */
.stats { margin-top: -52px; position: relative; z-index: 5; }
.stats-card {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  box-shadow: var(--shadow); display: grid; grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
}
.stat { padding: 28px 26px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat-num { font-size: 34px; font-weight: 700; color: var(--navy); line-height: 1.2; letter-spacing: -.02em; }
.stat-num small { font-size: 16px; font-weight: 600; margin-left: 2px; }
.stat-label { font-size: 13px; color: var(--muted); margin-top: 8px; }
.stat-note { font-size: 12px; color: #8A97A8; margin-top: 4px; }

/* ---------- 章节通用 ---------- */
.section { padding: 84px 0; }
.section.soft { background: var(--soft); }
.section-head { margin-bottom: 40px; max-width: 760px; }
.eyebrow { font-size: 12px; letter-spacing: .14em; color: var(--accent); font-weight: 700; text-transform: uppercase; }
.section-head h2 { font-size: clamp(26px, 3vw, 36px); margin: 12px 0 14px; line-height: 1.4; color: var(--navy-ink); }
.section-head p { color: var(--muted); margin: 0; font-size: 16px; }
.lead-text { font-size: 17px; color: #33445A; line-height: 1.95; }
.todo {
  display: inline-block; background: #FFF6E5; border: 1px dashed #E5BE79;
  color: #8A6218; padding: 2px 10px; border-radius: 5px; font-size: 13px;
}

/* ---------- 核心发现 ---------- */
.findings { display: grid; gap: 16px; }
.finding {
  display: grid; grid-template-columns: 44px 1fr; gap: 20px;
  background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--navy);
  border-radius: 8px; padding: 22px 26px;
  transition: box-shadow .2s ease, transform .2s ease;
}
.finding:hover { box-shadow: var(--shadow); transform: translateX(3px); }
.finding-no { font-size: 20px; font-weight: 700; color: #C6D5E8; line-height: 1.4; }
.finding h3 { margin: 0 0 6px; font-size: 17px; color: var(--navy-ink); }
.finding p { margin: 0; color: var(--muted); font-size: 15px; }

/* ---------- 表格 / 条形 ---------- */
.table-card { background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
caption { text-align: left; padding: 18px 22px 0; font-size: 13px; color: var(--muted); }
thead th {
  background: #F0F5FB; color: var(--navy-ink); font-weight: 600;
  text-align: left; padding: 13px 18px; border-bottom: 1px solid var(--line); font-size: 13px;
}
tbody td { padding: 12px 18px; border-bottom: 1px solid #EFF3F8; vertical-align: middle; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: #FAFCFF; }
.num { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; color: var(--navy-ink); white-space: nowrap; }
.bar-cell { width: 34%; }
.bar { height: 8px; background: #EAF0F7; border-radius: 99px; overflow: hidden; }
.bar span { display: block; height: 100%; background: var(--navy); border-radius: 99px; }
.bar.accent span { background: var(--accent); }
.table-note { font-size: 13px; color: var(--muted); margin: 14px 0 0; }
.grid-2 { display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px; align-items: start; }

/* ---------- 指标定义 ---------- */
.def-list { display: grid; gap: 0; background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.def-row { display: grid; grid-template-columns: 190px 1fr; gap: 20px; padding: 16px 22px; border-bottom: 1px solid #EFF3F8; font-size: 14px; }
.def-row:last-child { border-bottom: 0; }
.def-row dt { font-weight: 600; color: var(--navy-ink); }
.def-row dd { margin: 0; color: var(--muted); }
.def-row dd strong { color: var(--accent); font-weight: 600; }

/* ---------- 自检清单 ---------- */
.check-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.check-item { background: #fff; border: 1px solid var(--line); border-radius: 9px; padding: 20px 22px; font-size: 14px; }
.check-item .ci-no { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: var(--soft); color: var(--navy); font-size: 12px; font-weight: 700; margin-bottom: 12px; }
.check-item h3 { margin: 0 0 6px; font-size: 15px; color: var(--navy-ink); }
.check-item p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: 12px; }
.faq-list details { background: #fff; border: 1px solid var(--line); border-radius: 9px; padding: 0 22px; }
.faq-list summary { cursor: pointer; padding: 18px 0; font-weight: 600; color: var(--navy-ink); font-size: 15px; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; color: var(--accent); font-size: 20px; font-weight: 400; line-height: 1; transition: transform .2s ease; }
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p { margin: 0 0 20px; color: var(--muted); font-size: 14px; line-height: 1.9; }

/* ---------- 下载留资 ---------- */
.download { background: linear-gradient(120deg, var(--navy-ink), var(--navy)); color: #fff; padding: 76px 0; }
.download .grid-2 { align-items: center; }
.download h2 { font-size: clamp(26px, 3vw, 34px); margin: 12px 0 16px; line-height: 1.4; }
.download .eyebrow { color: #FFC59E; }
.download p { color: #CFE0F4; margin: 0 0 12px; font-size: 15px; }
.download ul { margin: 22px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.download li { font-size: 14px; color: #E3EEFA; padding-left: 24px; position: relative; }
.download li::before { content: ""; position: absolute; left: 2px; top: 10px; width: 8px; height: 8px; border-radius: 2px; background: #FFC59E; }
.form-card { background: #fff; color: var(--ink); border-radius: 12px; padding: 30px; box-shadow: var(--shadow-lg); }
.form-card h3 { margin: 0 0 6px; font-size: 20px; color: var(--navy-ink); }
.form-card .form-sub { margin: 0 0 22px; font-size: 13px; color: var(--muted); }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; color: #33445A; margin-bottom: 7px; }
.field label .opt { font-weight: 400; color: #8A97A8; }
.field input {
  width: 100%; padding: 11px 13px; border: 1px solid #D7E0EB; border-radius: 7px;
  font-size: 14px; font-family: var(--font); color: var(--ink); outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field input:focus { border-color: var(--navy); box-shadow: 0 0 0 3px rgba(11, 79, 156, .12); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.consent { display: flex; gap: 9px; align-items: flex-start; font-size: 12px; color: var(--muted); line-height: 1.7; margin: 4px 0 18px; }
.consent input { margin-top: 4px; flex: none; accent-color: var(--navy); }
.form-card .btn { width: 100%; }
.form-msg { margin: 14px 0 0; font-size: 13px; line-height: 1.7; min-height: 20px; }
.form-msg.ok { color: #1E7A4C; }
.form-msg.err { color: #B4442A; }
.form-msg.info { color: var(--muted); }

/* ---------- 引用规范 ---------- */
.cite-box { background: var(--soft); border: 1px solid var(--line); border-radius: 10px; padding: 24px 26px; }
.cite-box p { color: var(--muted); font-size: 14px; margin: 0 0 14px; }
.cite-text {
  background: #fff; border: 1px solid var(--line); border-radius: 7px;
  padding: 16px 18px; font-size: 13px; color: #33445A; line-height: 1.9;
  word-break: break-all;
}
.cite-actions { margin-top: 14px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.btn-small { padding: 8px 16px; font-size: 13px; }

/* ---------- 页脚 ---------- */
.site-footer { background: #062B57; color: #A9C4E2; padding: 46px 0 28px; font-size: 13px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; padding-bottom: 30px; border-bottom: 1px solid rgba(255,255,255,.12); }
.site-footer h4 { color: #fff; font-size: 15px; margin: 0 0 12px; }
.site-footer p { margin: 0 0 8px; line-height: 1.9; }
.site-footer a { color: #CFE0F4; }
.footer-bottom { padding-top: 20px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 12px; color: #8FAECF; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; padding: 60px 0 92px; }
  .cover { justify-self: start; width: 210px; }
  .stats-card { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .grid-2 { grid-template-columns: 1fr; }
  .check-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links a:not(.nav-cta) { display: none; }
}
@media (max-width: 620px) {
  .wrap, .narrow { width: min(100% - 32px, 1120px); }
  .site-nav .wrap { gap: 14px; }
  .brand-tag, .brand-split { display: none; }
  .brand-mark-img { height: 28px; }
  .hero h1 { font-size: 31px; }
  .cover { display: none; }
  .stats-card { grid-template-columns: 1fr 1fr; }
  .stat { padding: 20px 16px; }
  .stat-num { font-size: 26px; }
  .section { padding: 58px 0; }
  .check-grid { grid-template-columns: 1fr; }
  .def-row { grid-template-columns: 1fr; gap: 4px; }
  .footer-grid { grid-template-columns: 1fr; }
  .bar-cell { width: 24%; }
  tbody td, thead th { padding: 10px 12px; font-size: 13px; }
  .form-card { padding: 22px; }
}
@media print {
  .site-nav, .hero-actions, .download, .cite-actions, .demo-banner { display: none !important; }
  .hero { background: #fff; color: #000; }
  .hero h1, .hero-sub, .hero-meta, .chip { color: #000; }
  .section { padding: 24px 0; }
}