/* Simple corporate beian template — original, MIT-style reuse OK */
:root {
  --brand: #1f6f8b;
  --brand-dark: #155469;
  --text: #1f2933;
  --muted: #627d98;
  --bg: #f7fafc;
  --card: #ffffff;
  --line: #d9e2ec;
  --max: 960px;
  --radius: 12px;
}

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

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-dark); text-decoration: underline; }

.container { width: min(100% - 32px, var(--max)); margin: 0 auto; }

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.logo:hover { text-decoration: none; color: var(--text); }

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 16px;
}

.nav { display: flex; gap: 18px; flex-wrap: wrap; }
.nav a {
  color: var(--muted);
  font-size: 15px;
  text-decoration: none;
}
.nav a:hover,
.nav a.active { color: var(--brand); }

.hero {
  padding: 72px 0 48px;
  background:
    radial-gradient(circle at 10% 20%, color-mix(in srgb, var(--brand) 16%, white), transparent 42%),
    linear-gradient(180deg, #fff, var(--bg));
}

.hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.25;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.hero p {
  color: var(--muted);
  max-width: 640px;
  font-size: 17px;
}

.section { padding: 40px 0; }

.section h2 {
  font-size: 22px;
  margin-bottom: 16px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

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

.card h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.card p { color: var(--muted); font-size: 14px; }

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}

.panel p + p { margin-top: 12px; }
.muted { color: var(--muted); }

.list { padding-left: 18px; color: var(--muted); }
.list li + li { margin-top: 8px; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.site-footer {
  margin-top: 48px;
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 24px 0 32px;
  color: var(--muted);
  font-size: 14px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  justify-content: space-between;
  align-items: center;
}

.beian a { color: var(--muted); }

@media (max-width: 800px) {
  .cards,
  .contact-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 48px; }
}