:root {
  --bg: #f3f6f8;
  --ink: #1a2430;
  --muted: #5b6b7a;
  --line: #d7e0e8;
  --accent: #0f5c8c;
  --surface: #ffffff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #d9eaf5 0%, transparent 55%),
    radial-gradient(900px 420px at 100% 0%, #e7f0e8 0%, transparent 50%),
    var(--bg);
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

.wrap {
  width: min(920px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  padding: 4.5rem 0 3rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.lead {
  margin: 0;
  max-width: 36em;
  color: var(--muted);
  font-size: 1.05rem;
}

main {
  padding: 2.5rem 0 3.5rem;
}

.block + .block {
  margin-top: 2rem;
}

.block h2 {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
}

.block p {
  margin: 0;
  color: var(--muted);
}

.contact {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--surface);
}

.contact li {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1rem;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--line);
}

.contact li:last-child {
  border-bottom: 0;
}

.contact span {
  color: var(--muted);
}

.footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer p {
  margin: 0.35rem 0;
}

.footer a {
  color: var(--muted);
  text-decoration: none;
}

.footer a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.muted {
  opacity: 0.85;
}

@media (max-width: 560px) {
  .hero {
    padding: 3rem 0 2rem;
  }

  .contact li {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
}