/* 上下求索者的技术笔记：静态页面样式 */
* { box-sizing: border-box; }
body {
  margin: 0;
  color: #1e293b;
  background: #fff;
  font: 16px/1.85 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Microsoft YaHei", sans-serif;
}
.wrap { width: min(900px, calc(100% - 40px)); margin: 0 auto; }
.site-header { border-bottom: 1px solid #e4e8ef; }
.nav {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { color: #1e293b; font-weight: 750; text-decoration: none; }
.nav-label, small, .meta { color: #5b6575; font-size: 13px; }
.hero { padding: 54px 0 34px; border-bottom: 1px solid #e4e8ef; }
.eyebrow { color: #2457a7; font-size: 13px; font-weight: 700; letter-spacing: .12em; }
h1 { margin: 0; font-size: clamp(30px, 5vw, 44px); line-height: 1.3; letter-spacing: -.03em; }
.lead { max-width: 760px; margin: 22px 0; color: #465366; font-size: 18px; }
article section { padding-top: 28px; padding-bottom: 4px; }
h2 { margin: 0 0 14px; padding-left: 14px; border-left: 3px solid #2457a7; font-size: 23px; line-height: 1.45; }
p { margin: 0 0 14px; }
ul { padding-left: 1.35em; }
li { margin: 5px 0; }
code { padding: .12em .35em; border-radius: 4px; background: #f0f3f7; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; overflow-wrap: anywhere; }
pre { overflow: auto; padding: 18px 20px; border: 1px solid #e4e8ef; border-radius: 10px; background: #f5f7fa; line-height: 1.65; }
pre code { padding: 0; background: transparent; }
.note { padding: 14px 16px; border-left: 3px solid #c28a26; background: #fff8e8; color: #5b4a2b; }
.flow { display: grid; justify-items: center; gap: 6px; margin: 22px 0; }
.flow div { width: min(100%, 520px); padding: 12px 18px; border: 1px solid #cdd9ea; border-radius: 9px; background: #eaf1fc; text-align: center; line-height: 1.6; }
.flow b { color: #2457a7; font-size: 20px; line-height: 1.2; }
.site-footer { margin-top: 42px; padding: 24px 0 28px; border-top: 1px solid #e4e8ef; background: #f5f7fa; }
.footer-title { margin: 0 0 4px; font-weight: 700; }
@media (max-width: 560px) {
  .wrap { width: calc(100% - 28px); }
  .nav { min-height: 58px; }
  .nav-label { font-size: 12px; }
  .hero { padding-top: 38px; }
  .lead { font-size: 16px; }
  h2 { font-size: 21px; }
  .meta { line-height: 1.8; }
}

.备案号 {
  margin: 12px 0 0;
  text-align: center;
  font-size: 12px;
  line-height: 1.6;
}
.备案号 a {
  color: #5b6575;
  text-decoration: none;
}
.备案号 a:hover {
  color: #2457a7;
  text-decoration: underline;
}