:root {
  --bg: #f5f7f8;
  --surface: #ffffff;
  --surface-soft: #f8faf9;
  --text: #1b242c;
  --muted: #65717d;
  --line: #dfe5e8;
  --accent: #0f766e;
  --accent-strong: #0a5f59;
  --accent-soft: #e9f7f4;
  --shadow: 0 10px 28px rgba(31, 41, 55, 0.06);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #fbfcfc 0%, var(--bg) 100%);
  line-height: 1.72;
}
a { color: var(--accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 28px 22px; }
header, main, footer {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
header {
  padding: 24px 26px 22px;
  border-radius: 10px 10px 8px 8px;
}
main {
  margin: 16px 0;
  padding: 28px;
  border-radius: 8px;
}
footer {
  padding: 18px 24px;
  border-radius: 8px 8px 10px 10px;
}
.brand-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}
nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
}
nav a:hover {
  border-color: rgba(15, 118, 110, 0.35);
  background: var(--accent-soft);
  color: var(--accent-strong);
  text-decoration: none;
}
h1, h2, h3 { line-height: 1.28; letter-spacing: 0; }
h1 {
  margin: 8px 0 8px;
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 800;
}
h2 { margin: 0 0 8px; font-size: clamp(1.25rem, 2vw, 1.65rem); }
h3 { margin: 12px 0 9px; font-size: 1.06rem; }
p { color: var(--muted); margin-top: 0; }
ul { padding-left: 20px; }
li { margin-bottom: 8px; color: var(--muted); }
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 10px;
  border-radius: 7px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 700;
}
.hero-copy {
  max-width: 720px;
  margin: 4px 0 0;
  font-size: 1rem;
}
.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 20px;
}
.section-head p { margin-bottom: 0; }
.count {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
}
.card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
}
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.card-top span {
  color: #9aa4ad;
  font-size: 13px;
  font-weight: 800;
}
.card p { margin-bottom: 12px; }
.link-list { margin: 14px 0 0; padding-left: 0; list-style: none; }
.link-list li {
  margin: 0;
  padding: 10px 0;
  border-top: 1px solid rgba(223, 229, 232, 0.9);
}
.link-list li:first-child { border-top: 0; padding-top: 0; }
.link-list a { font-weight: 700; }
.note {
  margin-top: 22px;
  padding: 14px 16px;
  border: 1px solid rgba(15, 118, 110, 0.18);
  border-left: 4px solid var(--accent);
  background: #f7fcfb;
  color: var(--muted);
  border-radius: 8px;
}
.article { max-width: 760px; }
.article h2 { margin-top: 28px; }
.article h2:first-child { margin-top: 0; }
.article ul { margin-top: 12px; }
.article .note { margin-top: 26px; }
.meta {
  display: inline-block;
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 14px;
}
footer p { margin: 0; color: var(--muted); }
footer .beian a { color: var(--muted); }
footer .beian a:hover { color: var(--accent-strong); }
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
@media (max-width: 640px) {
  .wrap { padding: 16px; }
  header, main, footer { padding: 20px; }
  .brand-row, .section-head { display: block; }
  .brand-row .meta, .count { margin-top: 10px; }
  nav { gap: 7px; }
  nav a { flex: 1 1 calc(50% - 7px); }
  footer { align-items: flex-start; }
}