* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  color: #1f2933;
  background: #ffffff;
  line-height: 1.7;
}

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

.hero {
  min-height: 520px;
  background: linear-gradient(135deg, #e8f3ef 0%, #f7fbfa 50%, #ffffff 100%);
  padding: 24px 8%;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.logo {
  font-weight: 700;
  font-size: 20px;
}

.nav-links {
  display: flex;
  gap: 20px;
  font-size: 14px;
}

.nav-links a {
  color: #345;
}

.hero-content {
  max-width: 880px;
  padding-top: 120px;
}

.eyebrow {
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #607d72;
  font-size: 13px;
  font-weight: 700;
}

h1 {
  font-size: 56px;
  line-height: 1.15;
  margin: 12px 0;
}

.subtitle {
  font-size: 20px;
  max-width: 680px;
  color: #4b5563;
}

.hero-buttons {
  margin-top: 32px;
  display: flex;
  gap: 16px;
}

.button {
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
}

.primary {
  background: #315c50;
  color: white;
}

.secondary {
  border: 1px solid #315c50;
  color: #315c50;
}

.section {
  padding: 72px 8%;
  max-width: 1160px;
  margin: 0 auto;
}

.section.light {
  max-width: none;
  background: #f5f8f7;
}

.section.light > * {
  max-width: 1160px;
  margin-left: auto;
  margin-right: auto;
}

h2 {
  font-size: 32px;
  margin-bottom: 24px;
}

.cards,
.people {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card,
.person {
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.04);
}

.avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #d9ebe5;
  color: #315c50;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  margin-bottom: 16px;
}

.pub-list {
  padding-left: 22px;
}

.contact-box {
  background: #f5f8f7;
  padding: 20px;
  border-radius: 16px;
}

.footer {
  text-align: center;
  padding: 32px;
  color: #6b7280;
  background: #f5f8f7;
}

@media (max-width: 800px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  h1 {
    font-size: 40px;
  }

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