* {
  box-sizing: border-box;
}

html {
  background: #050814;
  color: #f8fafc;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.16), transparent 34rem),
    #050814;
}

body,
button,
input,
textarea {
  font: inherit;
}

.site-header {
  border-bottom: 1px solid #162033;
  background: rgba(5, 8, 20, 0.86);
}

.nav {
  width: min(1040px, 100%);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  color: #f8fafc;
  text-decoration: none;
  font-weight: 900;
  letter-spacing: 0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px 18px;
}

.nav-links a {
  color: #a7b4c8;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
}

.nav-links a:hover,
.nav-links a:focus {
  color: #38bdf8;
}

main {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 54px 24px 72px;
}

.hero {
  padding: 54px 0 32px;
}

.kicker {
  color: #38bdf8;
  font-size: 14px;
  font-weight: 900;
  margin: 0 0 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  color: #f8fafc;
  font-size: clamp(42px, 8vw, 72px);
  line-height: 1.02;
  margin: 0 0 16px;
  letter-spacing: -0.04em;
}

h2 {
  color: #f8fafc;
  font-size: 26px;
  line-height: 1.2;
  margin: 34px 0 12px;
}

h3 {
  color: #f8fafc;
  font-size: 19px;
  line-height: 1.3;
  margin: 26px 0 8px;
}

p {
  color: #a7b4c8;
  margin: 0 0 16px;
}

.lede {
  color: #dbeafe;
  font-size: 20px;
  line-height: 1.55;
  max-width: 760px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.card,
.content-card {
  background: linear-gradient(180deg, #0b1628, #07111f);
  border: 1px solid #162033;
  border-radius: 24px;
  padding: 22px;
}

.card a {
  display: inline-flex;
  color: #f8fafc;
  text-decoration: none;
  font-weight: 900;
  margin-bottom: 8px;
}

.card p {
  margin-bottom: 0;
}

.content-card {
  margin-top: 20px;
}

.content-card ul {
  color: #a7b4c8;
  margin: 0 0 18px;
  padding-left: 22px;
}

.content-card li {
  margin-bottom: 8px;
}

.note {
  border-left: 4px solid #38bdf8;
  background: rgba(56, 189, 248, 0.14);
  border-radius: 18px;
  padding: 18px;
  margin: 22px 0;
}

.note p {
  color: #dbeafe;
  margin: 0;
}

.warning {
  border-left-color: #facc15;
  background: rgba(250, 204, 21, 0.1);
}

.warning p {
  color: #fef3c7;
}

.page-title {
  font-size: clamp(34px, 6vw, 54px);
}

.meta {
  color: #7c8da6;
  font-size: 14px;
}

.site-footer {
  border-top: 1px solid #162033;
  padding: 24px;
  color: #7c8da6;
  text-align: center;
  font-size: 14px;
}

@media (max-width: 720px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    justify-content: flex-start;
  }

  main {
    padding-top: 36px;
  }

  .hero {
    padding-top: 34px;
  }

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