:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #080d18;
  color: #f7f9fc;
  --surface: #111a2b;
  --surface-strong: #172238;
  --border: #2a3852;
  --muted: #a9b4c8;
  --accent: #83b4ff;
  --accent-strong: #3f83f8;
  --success: #6ee7b7;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background: #080d18;
}

a {
  color: inherit;
}

code {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border-radius: 6px;
  background: #ffffff;
  color: #080d18;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header,
main,
.site-footer {
  width: min(1060px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid #1c2940;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 750;
  text-decoration: none;
}

.brand img {
  border-radius: 7px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.site-nav a,
.site-footer a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-footer a:hover,
.site-footer a:focus-visible,
.text-link:hover,
.text-link:focus-visible {
  color: #ffffff;
}

.site-nav .header-cta {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 7px;
}

main {
  padding-block: 72px 88px;
}

.guide-hero,
.article-header {
  max-width: 790px;
  margin-bottom: 48px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.04;
}

.lede {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.65;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 13px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.guide-card {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.guide-card .card-label {
  display: block;
  margin-bottom: 12px;
  color: var(--success);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.guide-card h2 {
  margin-bottom: 12px;
  font-size: 23px;
  line-height: 1.2;
}

.guide-card p {
  margin-bottom: 20px;
  color: var(--muted);
  line-height: 1.65;
}

.text-link {
  color: var(--accent);
  font-weight: 750;
  text-decoration: none;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 700px) minmax(220px, 280px);
  gap: 56px;
  align-items: start;
}

.article-body {
  min-width: 0;
}

.article-body section + section {
  margin-top: 46px;
}

.article-body h2 {
  margin-bottom: 14px;
  font-size: 29px;
  line-height: 1.2;
}

.article-body h3 {
  margin: 28px 0 10px;
  font-size: 19px;
}

.article-body p,
.article-body li {
  color: #c4cddd;
  font-size: 17px;
  line-height: 1.72;
}

.article-body ul,
.article-body ol {
  padding-left: 22px;
}

.article-body li + li {
  margin-top: 10px;
}

.article-body strong {
  color: #ffffff;
}

.note {
  margin: 28px 0;
  padding: 20px 22px;
  border-left: 3px solid var(--accent-strong);
  background: var(--surface);
  color: #d8e0ed;
  line-height: 1.65;
}

.article-aside {
  position: sticky;
  top: 24px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.article-aside h2 {
  margin-bottom: 12px;
  font-size: 18px;
}

.article-aside p,
.article-aside li {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.article-aside ul {
  margin: 0;
  padding-left: 18px;
}

.article-aside li + li {
  margin-top: 8px;
}

.guide-cta {
  margin-top: 52px;
  padding: 28px;
  border: 1px solid #365a8e;
  border-radius: 8px;
  background: var(--surface-strong);
}

.guide-cta h2 {
  margin-bottom: 10px;
  font-size: 25px;
}

.guide-cta p {
  margin-bottom: 20px;
  color: var(--muted);
  line-height: 1.6;
}

.button-link {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid var(--accent-strong);
  border-radius: 7px;
  background: #2563eb;
  color: #ffffff;
  font-weight: 800;
  text-decoration: none;
}

.button-link:hover,
.button-link:focus-visible {
  background: #1d4ed8;
}

a:focus-visible {
  outline: 3px solid rgba(63, 131, 248, 0.42);
  outline-offset: 3px;
}

.site-footer {
  display: flex;
  min-height: 86px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid #1c2940;
  color: var(--muted);
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

@media (max-width: 820px) {
  .guide-grid,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-aside {
    position: static;
  }
}

@media (max-width: 620px) {
  .site-header {
    min-height: 64px;
  }

  .site-nav {
    gap: 14px;
  }

  .site-nav a:not(.header-cta) {
    display: none;
  }

  main {
    padding-block: 52px 68px;
  }

  h1 {
    font-size: 39px;
  }

  .lede {
    font-size: 17px;
  }

  .article-body p,
  .article-body li {
    font-size: 16px;
  }

  .site-footer {
    padding-block: 24px;
    align-items: flex-start;
    flex-direction: column;
  }
}