:root {
  color-scheme: light;
  --navy: #081328;
  --navy-soft: #0e2148;
  --ink: #14213d;
  --muted: #5b6579;
  --line: #dfe4ee;
  --surface: #f6f8fc;
  --white: #ffffff;
  --blue: #2f6bff;
  --gold: #f2a93b;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

a {
  color: var(--blue);
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-thickness: 2px;
}

.site-header {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-soft) 65%, #16366e 100%);
  color: var(--white);
  padding: 28px 24px;
}

.site-header .inner,
main,
.site-footer .inner {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-weight: 650;
  font-size: 18px;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 19px;
  font-weight: 750;
  color: #cfe6ff;
}


main {
  padding: 44px 24px 64px;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(32px, 6vw, 44px);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

h2 {
  margin: 38px 0 10px;
  font-size: 23px;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

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

p,
ul,
ol {
  margin: 0 0 14px;
}

ul,
ol {
  padding-left: 24px;
}

li + li {
  margin-top: 6px;
}

.updated {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 15px;
}

.lede {
  font-size: 19px;
  color: var(--muted);
  max-width: 62ch;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 22px;
  margin: 22px 0;
}

.card p:last-child,
.card ul:last-child {
  margin-bottom: 0;
}

.nav-list {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.nav-list a {
  display: block;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
  color: var(--ink);
  text-decoration: none;
}

.nav-list a:hover {
  border-color: #b9c6de;
  background: var(--surface);
}

.nav-list strong {
  display: block;
  font-size: 18px;
  margin-bottom: 2px;
}

.nav-list span {
  color: var(--muted);
  font-size: 15px;
}

.button {
  display: inline-block;
  margin: 8px 0 4px;
  padding: 13px 20px;
  border-radius: 12px;
  background: var(--blue);
  color: var(--white);
  font-weight: 650;
  text-decoration: none;
}

.button:hover {
  background: #2459da;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 26px 24px 42px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-bottom: 10px;
}

.site-footer a {
  color: var(--muted);
}

.anchor-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding: 0;
  margin: 0 0 26px;
  list-style: none;
  font-size: 15px;
}

@media (max-width: 520px) {
  body {
    font-size: 16px;
  }

  main {
    padding-top: 32px;
  }

  .card {
    padding: 17px 18px;
  }
}