:root {
  --ink: #152033;
  --muted: #5f6b7a;
  --line: #dfe5ec;
  --brand: #1666c1;
  --brand-dark: #0d4f9d;
  --warm: #c47a2c;
  --soft: #f6f8fb;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  line-height: 1.7;
  background: #ffffff;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.wrap {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

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

.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 700;
  color: var(--brand-dark);
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--brand), #1d9a8a);
  font-size: 22px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: #243247;
  font-size: 15px;
}

.nav a:hover {
  color: var(--brand);
}

.hero {
  background: linear-gradient(180deg, #f4f8fd 0%, #ffffff 100%);
  border-bottom: 1px solid #eef2f6;
}

.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 520px);
  gap: 48px;
  align-items: center;
  min-height: 520px;
  padding: 54px 0 60px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--warm);
  font-weight: 700;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.16;
  letter-spacing: 0;
}

.lead {
  max-width: 650px;
  margin: 22px 0 0;
  color: #445166;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 6px;
  border: 1px solid var(--brand);
  color: #ffffff;
  background: var(--brand);
  font-weight: 700;
}

.button.secondary {
  color: var(--brand-dark);
  background: #ffffff;
}

.hero-image {
  border: 1px solid #d7e0ea;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 46px rgba(21, 32, 51, 0.12);
  background: #ffffff;
}

.section {
  padding: 70px 0;
}

.section.alt {
  background: var(--soft);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}

.section-title {
  margin: 0;
  font-size: 30px;
  line-height: 1.3;
}

.section-note {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: 36px;
  align-items: center;
}

.about-copy {
  color: #39465a;
  font-size: 16px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: #ffffff;
}

.stat strong {
  display: block;
  color: var(--brand-dark);
  font-size: 26px;
  line-height: 1.2;
}

.stat span {
  color: var(--muted);
  font-size: 14px;
}

.visual {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #ffffff;
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.card {
  min-height: 188px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  background: #ffffff;
}

.card-number {
  color: var(--warm);
  font-size: 14px;
  font-weight: 700;
}

.card h3 {
  margin: 12px 0 10px;
  font-size: 20px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.news-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.news-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  background: #ffffff;
}

.news-item time {
  display: block;
  color: var(--brand);
  font-size: 14px;
  font-weight: 700;
}

.news-item h3 {
  margin: 10px 0 10px;
  font-size: 19px;
}

.news-item p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.contact-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  border: 1px solid #cfdbe8;
  border-radius: 8px;
  padding: 28px;
  background: linear-gradient(135deg, #ffffff 0%, #f3f8ff 100%);
}

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

.contact-band strong {
  display: block;
  color: var(--ink);
  font-size: 18px;
}

.footer {
  color: #d8e4f2;
  background: #16253a;
}

.footer-main {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-main h2 {
  margin: 0 0 8px;
  color: #ffffff;
  font-size: 22px;
}

.footer-main p {
  margin: 0;
  color: #b9c8d8;
}

.icp {
  padding: 16px 0 22px;
  text-align: center;
  font-size: 14px;
}

.icp a {
  color: #ffffff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 900px) {
  .topbar .wrap {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .nav {
    width: 100%;
    gap: 14px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero .wrap,
  .about-grid,
  .contact-band {
    grid-template-columns: 1fr;
  }

  .hero .wrap {
    min-height: auto;
    padding: 42px 0 52px;
  }

  .cards,
  .news-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .wrap {
    width: min(100% - 24px, 1160px);
  }

  .section {
    padding: 48px 0;
  }

  .section-head,
  .footer-main {
    display: block;
  }

  .section-note {
    margin-top: 10px;
  }

  .stats,
  .cards,
  .news-list {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    display: grid;
  }
}