:root {
  --blue: #0754c7;
  --yellow: #fbbb0a;
  --paper: #f4f0e8;
  --ink: #171717;
  --white: #fffdf7;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

a { color: inherit; }

img {
  display: block;
  width: 100%;
  height: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  padding: 14px clamp(20px, 5vw, 72px);
  color: var(--white);
  background: rgba(7, 84, 199, .96);
  border-bottom: 1px solid rgba(255, 255, 255, .3);
}

.site-logo {
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  font-size: 14px;
  font-weight: 700;
}

.site-nav a { text-decoration: none; }

.hero {
  padding: clamp(72px, 11vw, 150px) clamp(20px, 7vw, 110px);
  color: var(--white);
  background: var(--blue);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--yellow);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

h1 {
  max-width: 1100px;
  margin: 0;
  font-size: clamp(42px, 7vw, 102px);
  line-height: .98;
  letter-spacing: -.06em;
}

.lead {
  max-width: 820px;
  margin: 28px 0 0;
  font-size: clamp(17px, 2vw, 24px);
  line-height: 1.75;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  color: var(--blue);
  background: var(--yellow);
  border-color: var(--yellow);
}

.section {
  padding: clamp(56px, 8vw, 110px) clamp(20px, 7vw, 110px);
}

.section.white { background: var(--white); }
.section.yellow { background: var(--yellow); }

.section h2 {
  max-width: 900px;
  margin: 0 0 26px;
  color: var(--blue);
  font-size: clamp(30px, 4vw, 58px);
  line-height: 1.08;
  letter-spacing: -.045em;
}

.section p,
.section li {
  font-size: 17px;
  line-height: 1.85;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 38px;
}

.card {
  padding: 28px;
  background: var(--white);
  border: 1px solid rgba(23, 23, 23, .16);
  border-radius: 18px;
}

.card h3 {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 23px;
}

.card p { margin: 0; }

.detail-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 40px;
  max-width: 960px;
  padding-left: 22px;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.gallery figure {
  margin: 0;
  overflow: hidden;
  background: #ddd;
  border-radius: 16px;
}

.gallery img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.gallery figcaption {
  padding: 12px 14px 14px;
  background: var(--white);
  font-size: 14px;
  line-height: 1.6;
}

.note {
  max-width: 900px;
  padding: 20px 22px;
  background: rgba(7, 84, 199, .08);
  border-left: 4px solid var(--blue);
}

.breadcrumbs {
  padding: 22px clamp(20px, 7vw, 110px);
  color: #555;
  font-size: 14px;
}

.related {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.related a {
  padding: 10px 16px;
  color: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

.site-footer {
  padding: 44px clamp(20px, 7vw, 110px);
  color: var(--white);
  background: var(--blue);
}

.site-footer p { margin: 6px 0; }

@media (max-width: 760px) {
  .site-header { align-items: flex-start; }
  .site-nav { gap: 10px 14px; }
  .grid, .detail-list, .gallery { grid-template-columns: 1fr; }
  .hero { padding-top: 72px; }
}