* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --ink: #17202a;
  --muted: #5f6b77;
  --line: #dfe5ea;
  --paper: #ffffff;
  --soft: #f5f7f9;
  --brand: #b3261e;
  --brand-dark: #7f1d1d;
  --accent: #1f6f8b;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.75;
}

a {
  color: var(--brand-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.topbar {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
  position: sticky;
  top: 0;
  z-index: 5;
}

.topbar-inner,
.wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-weight: 800;
  letter-spacing: 0;
  color: var(--ink);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
}

.hero {
  padding: 72px 0 48px;
  background: linear-gradient(180deg, #fff 0%, #f8fafb 100%);
  border-bottom: 1px solid var(--line);
}

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

h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.12;
  letter-spacing: 0;
  max-width: 900px;
}

.lead {
  max-width: 840px;
  color: var(--muted);
  font-size: 18px;
  margin: 22px 0 0;
}

.hero-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--brand-dark);
  background: var(--brand-dark);
  color: #fff;
  border-radius: 6px;
  font-weight: 700;
}

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

main {
  padding: 48px 0 72px;
}

section {
  margin: 0 0 44px;
}

h2 {
  margin: 0 0 16px;
  font-size: 28px;
  line-height: 1.3;
}

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

p {
  margin: 0 0 14px;
}

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

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

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  background: #fff;
}

.metric {
  font-size: 30px;
  line-height: 1.2;
  font-weight: 800;
  color: var(--brand-dark);
  margin-bottom: 6px;
}

.muted {
  color: var(--muted);
}

.list {
  padding-left: 20px;
  margin: 0;
}

.list li {
  margin: 8px 0;
}

.band {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  color: var(--muted);
  font-size: 14px;
}

.crumb {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 820px) {
  .topbar-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .hero {
    padding: 48px 0 34px;
  }

  .grid,
  .grid.two {
    grid-template-columns: 1fr;
  }
}