:root {
  color-scheme: dark;
  --bg: #0f172a;
  --panel: #172033;
  --panel-2: #111827;
  --text: #f8fafc;
  --muted: #cbd5e1;
  --soft: #94a3b8;
  --line: #334155;
  --brand: #ef4444;
  --brand-dark: #dc2626;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

a {
  color: inherit;
}

.topbar,
.container,
.footer {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0;
}

.brand {
  font-weight: 900;
  text-decoration: none;
  letter-spacing: .02em;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
  color: var(--muted);
  font-size: 14px;
}

.nav a,
.footer a,
.guide-links a {
  text-decoration: none;
}

.nav a:hover,
.footer a:hover,
.guide-links a:hover {
  color: white;
}

.hero {
  padding: 48px 0 26px;
  border-top: 1px solid var(--line);
}

.eyebrow {
  color: #fca5a5;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 {
  max-width: 850px;
  margin: 12px 0 18px;
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.08;
}

h2 {
  margin: 34px 0 12px;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.2;
}

p,
li {
  color: var(--muted);
}

.lead {
  max-width: 780px;
  font-size: 19px;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 30px;
  align-items: start;
  padding: 22px 0 54px;
}

article,
.side-card,
.cta,
.guide-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

article {
  padding: clamp(20px, 5vw, 42px);
}

article p:first-of-type {
  margin-top: 0;
}

.side-card,
.guide-card {
  padding: 20px;
}

.side-card {
  position: sticky;
  top: 18px;
}

.guide-links {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.guide-links a {
  display: block;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--muted);
}

.cta {
  margin-top: 34px;
  padding: 24px;
  background: #111827;
}

.button {
  display: inline-block;
  margin-top: 12px;
  padding: 13px 18px;
  border-radius: 8px;
  background: var(--brand);
  color: white;
  font-weight: 800;
  text-decoration: none;
}

.button:hover {
  background: var(--brand-dark);
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding: 22px 0 58px;
}

.guide-card h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.guide-card a {
  display: inline-block;
  margin-top: 8px;
  color: #fca5a5;
  font-weight: 800;
  text-decoration: none;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  color: var(--soft);
  font-size: 14px;
}

@media (max-width: 820px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

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

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

  .side-card {
    position: static;
  }
}