:root {
  --navy: #0b2a4a;
  --navy-2: #123a63;
  --accent: #c9a227;
  --bg: #f4f6f8;
  --text: #1c2430;
  --muted: #5b6775;
  --line: #dce3ea;
  --white: #fff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.topbar {
  background: var(--navy);
  color: #d7e4f2;
  font-size: 13px;
  padding: 8px 0;
}
.topbar .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.topbar a:hover { color: #fff; }

.header {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: linear-gradient(145deg, var(--navy), var(--navy-2));
  color: var(--accent);
  display: grid;
  place-items: center;
  font-size: 18px;
  font-weight: 800;
}
.logo small { display: block; color: var(--muted); font-weight: 400; font-size: 12px; }

nav { display: flex; gap: 8px; }
nav a {
  padding: 8px 16px;
  border-radius: 6px;
  color: var(--navy);
  font-weight: 600;
}
nav a:hover, nav a.active { background: #eef4fb; color: var(--navy-2); }

.hero {
  background:
    linear-gradient(105deg, rgba(11,42,74,.92), rgba(18,58,99,.78)),
    radial-gradient(circle at 80% 20%, #2a6aaa 0, transparent 40%);
  color: #fff;
  padding: 88px 0 92px;
}
.hero h1 { font-size: clamp(28px, 4vw, 42px); line-height: 1.25; max-width: 760px; }
.hero p { margin-top: 16px; max-width: 680px; color: #dce8f4; font-size: 16px; }
.btns { margin-top: 28px; display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 6px;
  font-weight: 700;
  background: var(--accent);
  color: #1a1404;
}
.btn.ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,.45);
}

section { padding: 64px 0; }
.section-title { font-size: 26px; color: var(--navy); margin-bottom: 10px; }
.section-sub { color: var(--muted); margin-bottom: 28px; }

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
}
.card h3 { color: var(--navy); margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14px; }

.page-banner {
  background: var(--navy);
  color: #fff;
  padding: 48px 0;
}
.page-banner h1 { font-size: 32px; }
.page-banner p { color: #c9d7e6; margin-top: 8px; }

.content {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 32px;
}
.content h2 { color: var(--navy); margin: 24px 0 10px; font-size: 20px; }
.content h2:first-child { margin-top: 0; }
.content p { margin-bottom: 14px; color: #334155; }
.content ul { padding-left: 20px; color: #334155; }
.content li { margin: 6px 0; }

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.info-item {
  background: #f7fafc;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
}
.info-item h3 { color: var(--navy); margin-bottom: 8px; font-size: 17px; }
.info-item p { color: var(--muted); margin: 4px 0; font-size: 14px; }

.footer {
  background: #081c33;
  color: #d5e0ec;
  padding: 40px 0 28px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.footer h4 { color: #fff; margin-bottom: 10px; }
.footer a { color: #d5e0ec; }
.footer a:hover { color: #fff; }
.beian {
  text-align: center;
  padding-top: 22px;
  font-size: 16px;
  font-weight: 700;
}
.beian a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.22);
  padding: 10px 18px;
  border-radius: 8px;
}
.beian a:hover { background: rgba(255,255,255,.16); }
.beian small { display: block; margin-top: 10px; font-weight: 400; color: #9bb0c4; font-size: 12px; }

@media (max-width: 800px) {
  .cards, .footer-grid, .info-grid { grid-template-columns: 1fr; }
  nav { flex-wrap: wrap; justify-content: flex-end; }
  .hero { padding: 56px 0; }
}