:root {
  --ink: #123047;
  --ink-soft: #4a6578;
  --line: #d7e3ea;
  --paper: #f3f7f9;
  --white: #ffffff;
  --accent: #00b7e0;
  --accent-dark: #0891b2;
  --navy: #0c2c3e;
  --navy-2: #164258;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  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 {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--navy);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  letter-spacing: 1px;
  font-size: 13px;
}

.brand strong {
  display: block;
  font-size: 18px;
  line-height: 1.2;
}

.brand span {
  display: block;
  font-size: 12px;
  color: var(--ink-soft);
}

.nav {
  display: flex;
  gap: 28px;
  font-size: 15px;
}

.nav a:hover,
.nav a.is-on { color: var(--accent-dark); }

.hero {
  background: var(--navy);
  color: #fff;
  padding: 88px 0 96px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 420px;
  height: 420px;
  border: 48px solid rgba(0, 183, 224, 0.16);
  border-radius: 50%;
}

.hero::before {
  content: "";
  position: absolute;
  left: 8%;
  bottom: 0;
  width: 220px;
  height: 8px;
  background: var(--accent);
}

.hero-kicker {
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.18em;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: 52px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.15;
}

.hero p {
  margin-top: 18px;
  max-width: 560px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
}

.section {
  padding: 80px 0;
}

.section h2 {
  font-size: 28px;
  margin-bottom: 12px;
}

.lead {
  color: var(--ink-soft);
  max-width: 640px;
  margin-bottom: 40px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 28px 24px 32px;
}

.card b {
  display: block;
  font-size: 18px;
  margin: 12px 0 8px;
}

.card p { color: var(--ink-soft); font-size: 15px; }

.idx {
  width: 36px;
  height: 36px;
  background: #e7f7fb;
  color: var(--accent-dark);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 13px;
}

.about {
  background: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: start;
}

.facts {
  background: var(--navy);
  color: #fff;
  padding: 32px 28px;
}

.facts dt {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
  margin-top: 16px;
}

.facts dt:first-child { margin-top: 0; }

.facts dd {
  font-size: 15px;
  word-break: break-all;
}

.contact-list {
  display: grid;
  gap: 16px;
}

.contact-item {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 22px 24px;
}

.contact-item small {
  display: block;
  color: var(--ink-soft);
  font-size: 12px;
  margin-bottom: 6px;
}

.contact-item a { color: var(--accent-dark); }

.page-head {
  background: var(--navy);
  color: #fff;
  padding: 56px 0 48px;
}

.page-head h1 { font-size: 32px; }

.article {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 40px 44px 48px;
  max-width: 860px;
}

.article h2 {
  font-size: 18px;
  margin: 28px 0 10px;
}

.article p, .article li {
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.article ul { padding-left: 20px; }

.site-foot {
  background: var(--navy-2);
  color: rgba(255, 255, 255, 0.78);
  padding: 36px 0 28px;
  font-size: 13px;
}

.foot-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.site-foot a { color: #9ae6f5; }

.beian {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 16px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 800px) {
  .nav { display: none; }
  .hero { padding: 56px 0 64px; }
  .hero h1 { font-size: 36px; }
  .cards,
  .about-grid { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .article { padding: 28px 20px; }
}