:root {
  --ink: #1b2430;
  --ink-soft: #5a6675;
  --line: #e3e7ec;
  --bg: #ffffff;
  --bg-soft: #f5f7f9;
  --brand: #14506e;
  --brand-soft: #eaf1f5;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1000px; margin: 0 auto; padding: 0 24px; }

header.site {
  border-bottom: 1px solid var(--line);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  flex-wrap: wrap;
  gap: 8px;
}

.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--ink);
}

.brand b {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.brand span {
  font-size: 12px;
  color: #8d98a6;
  letter-spacing: 0.6px;
}

nav a {
  margin-left: 22px;
  font-size: 15px;
  color: var(--ink-soft);
  text-decoration: none;
}

nav a:hover { color: var(--brand); }

.hero {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
  padding: 56px 0 52px;
}

.hero h1 {
  font-size: 30px;
  line-height: 1.45;
  margin: 0 0 14px;
  font-weight: 600;
}

.hero p {
  margin: 0;
  max-width: 720px;
  color: var(--ink-soft);
  font-size: 16px;
}

main { padding: 8px 0 72px; }

section { padding: 44px 0 8px; }

h2 {
  font-size: 20px;
  margin: 0 0 6px;
  font-weight: 600;
  color: var(--ink);
}

h2 + .sub {
  margin: 0 0 22px;
  font-size: 14px;
  color: #8d98a6;
  letter-spacing: 0.4px;
}

h3 {
  font-size: 16px;
  margin: 0 0 6px;
  font-weight: 600;
  color: var(--brand);
}

p { margin: 0 0 14px; color: var(--ink-soft); }

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 22px 20px;
  background: #fff;
}

.card p { margin: 0; font-size: 15px; }

.facts {
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.facts table { width: 100%; border-collapse: collapse; font-size: 15px; }

.facts tr:nth-child(odd) { background: var(--bg-soft); }

.facts td {
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.facts td:first-child {
  width: 148px;
  color: #7b8794;
  white-space: nowrap;
}

.facts td:last-child { color: var(--ink); }

.facts tr:last-child td { border-bottom: none; }

.notice {
  background: var(--brand-soft);
  border-left: 3px solid var(--brand);
  padding: 14px 18px;
  font-size: 14px;
  color: #2c4a5b;
  margin: 8px 0 0;
}

footer {
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
  padding: 30px 0 42px;
  text-align: center;
  font-size: 13px;
  line-height: 2;
  color: #7b8794;
}

footer .owner { display: block; color: #5a6675; }

footer .beian { display: block; text-align: center; margin-top: 2px; }

footer a { color: #6b7480; text-decoration: none; }

footer a:hover { color: var(--brand); }

@media (max-width: 620px) {
  .hero { padding: 36px 0; }
  .hero h1 { font-size: 23px; }
  .grid { grid-template-columns: 1fr; }
  nav a { margin-left: 0; margin-right: 18px; }
  .facts td:first-child { width: 108px; }
}