:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #f6f7f9;
  color: #20242a;
}

.container {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.header {
  background: #ffffff;
  border-bottom: 1px solid #e1e5e9;
}

.header .container {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  color: #1d2733;
  font-weight: 700;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 22px;
}

nav a,
.content a,
.error-page a {
  color: #315d86;
  text-decoration: none;
}

.hero {
  padding: 90px 0 60px;
  max-width: 760px;
}

.hero h1,
.content h1,
.error-page h1 {
  margin: 0 0 18px;
  font-size: clamp(2rem, 5vw, 3.7rem);
  line-height: 1.1;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .8rem;
  font-weight: 700;
  color: #617283;
}

.lead {
  font-size: 1.2rem;
  color: #59636e;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-bottom: 80px;
}

.card {
  background: #ffffff;
  padding: 26px;
  border: 1px solid #e1e5e9;
  border-radius: 12px;
}

.card h2 {
  margin-top: 0;
}

.content {
  min-height: 65vh;
  padding-top: 70px;
  padding-bottom: 70px;
  max-width: 850px;
}

footer {
  border-top: 1px solid #e1e5e9;
  color: #707984;
  padding: 22px 0;
}

.error-page {
  padding-top: 110px;
}

@media (max-width: 720px) {
  .header .container {
    align-items: flex-start;
    flex-direction: column;
    padding-top: 15px;
    padding-bottom: 15px;
  }

  nav {
    flex-wrap: wrap;
    gap: 10px 18px;
  }

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