:root {
  --navy: #0b3d73;
  --navy-2: #0a2f58;
  --blue: #1a73c9;
  --sky: #e8f2fb;
  --ice: #f5f9fd;
  --white: #ffffff;
  --ink: #123050;
  --mute: #5b6f86;
  --line: #d5e4f2;
  --ok: #1a7a4c;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: "IBM Plex Sans", "PingFang SC", sans-serif;
  line-height: 1.6;
}
a { color: var(--blue); }
img { max-width: 100%; display: block; }
.wrap { width: min(1120px, calc(100% - 36px)); margin: 0 auto; }
.site-nav {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 22px;
  background: rgba(255,255,255,.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.brand { text-decoration: none; color: var(--navy); font-weight: 700; letter-spacing: -.02em; }
.brand b { display: block; font-size: 18px; }
.brand small { display: block; font-size: 11px; color: var(--mute); font-weight: 500; letter-spacing: .12em; text-transform: uppercase; }
.site-nav ul { display: flex; flex-wrap: wrap; gap: 8px 16px; list-style: none; margin: 0; padding: 0; font-size: 14px; }
.site-nav ul a { text-decoration: none; color: var(--ink); }
.site-nav ul a.active { color: var(--blue); font-weight: 600; }
.btn {
  display: inline-block; text-decoration: none; border: 0; cursor: pointer;
  background: var(--navy); color: #fff; padding: 10px 16px; border-radius: 6px;
  font-size: 14px; font-weight: 600;
}
.btn.ghost { background: transparent; color: var(--navy); border: 1px solid var(--line); }
.hero {
  display: grid; grid-template-columns: 1.05fr .95fr;
  background: linear-gradient(180deg, var(--sky), var(--white));
  min-height: 72vh;
}
.hero-copy { padding: 72px 0 56px; }
.kicker { color: var(--blue); font-size: 12px; letter-spacing: .18em; text-transform: uppercase; font-weight: 600; }
h1 { font-family: "IBM Plex Serif", serif; font-size: clamp(36px, 5vw, 58px); line-height: 1.12; margin: 12px 0 16px; color: var(--navy-2); }
h2 { font-family: "IBM Plex Serif", serif; font-size: clamp(26px, 3.4vw, 38px); color: var(--navy-2); margin: 0 0 10px; }
h3 { margin: 0 0 8px; color: var(--navy); }
.lede, .sub { color: var(--mute); max-width: 42em; }
.stats { display: flex; gap: 28px; margin-top: 32px; }
.stats b { display: block; font-size: 24px; color: var(--navy); }
.hero img, .media img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
section { padding: 72px 0; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 28px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.card {
  background: var(--ice); border: 1px solid var(--line); padding: 22px; border-radius: 10px;
}
.card.white { background: #fff; }
table { width: 100%; border-collapse: collapse; margin-top: 22px; font-size: 14px; }
th, td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--mute); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.price { font-size: 32px; color: var(--navy); font-weight: 700; }
.price span { font-size: 14px; color: var(--mute); font-weight: 500; }
form { display: grid; gap: 12px; }
label { font-size: 13px; color: var(--mute); }
input, select, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px;
  font: inherit; background: #fff; color: var(--ink);
}
textarea { min-height: 120px; resize: vertical; }
.note { font-size: 13px; color: var(--mute); }
.ok { color: var(--ok); font-weight: 600; display: none; }
.page-head { padding: 56px 0 12px; background: var(--sky); border-bottom: 1px solid var(--line); }
footer.site-foot {
  background: var(--navy-2); color: #d7e6f5; padding: 36px 0 28px; font-size: 13px;
}
footer.site-foot a { color: #fff; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 24px; margin-bottom: 22px; }
.foot-grid ul { list-style: none; margin: 8px 0 0; padding: 0; }
.foot-grid li { margin: 6px 0; }
.beian { border-top: 1px solid rgba(255,255,255,.16); padding-top: 16px; line-height: 1.8; }
@media (max-width: 860px) {
  .hero, .grid-3, .grid-2, .foot-grid, .site-nav ul { display: block; }
  .site-nav { flex-wrap: wrap; }
  .hero-copy { padding: 36px 0; }
}