:root {
  --background: hsl(180 2% 10%);
  --foreground: hsl(46 97% 92%);
  --card: hsl(180 2% 12%);
  --primary: hsl(43 43% 56%);
  --primary-light: hsl(46 97% 80%);
  --primary-dark: hsl(40 39% 43%);
  --muted-foreground: hsl(43 30% 60%);
  --border: hsl(39 20% 25%);
  --grid: hsl(46 97% 92% / 0.03);
  --radius: 0.75rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background-color: var(--background);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 60px 60px;
  color: var(--foreground);
  font: 17px/1.7 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

header .bar {
  max-width: 820px;
  margin: 0 auto;
  padding: 28px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

header img {
  display: block;
  height: 36px;
  width: auto;
}

header nav {
  display: flex;
  gap: 8px;
  font-size: 15px;
}

header nav a {
  color: var(--muted-foreground);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius);
  border: 1px solid transparent;
}

header nav a:hover {
  color: var(--foreground);
}

header nav a[aria-current='page'] {
  color: var(--foreground);
  border-color: var(--border);
  background: var(--card);
}

main {
  max-width: 820px;
  margin: 0 auto 48px;
  padding: 48px 40px 56px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) * 2);
}

h1 {
  font-size: 44px;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary) 55%, var(--primary-dark));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h2 {
  font-size: 21px;
  font-weight: 700;
  margin: 40px 0 8px;
  color: var(--foreground);
}

p,
li {
  color: hsl(46 60% 86%);
}

strong {
  color: var(--foreground);
}

.meta {
  color: var(--muted-foreground);
  font-size: 14px;
  margin: 0 0 28px;
}

a {
  color: var(--primary);
  text-decoration-color: hsl(43 43% 56% / 0.5);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--primary-light);
}

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

li {
  margin-bottom: 10px;
}

li::marker {
  color: var(--primary);
}

footer .bar {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 20px 48px;
  color: var(--muted-foreground);
  font-size: 14px;
  text-align: center;
}

@media (max-width: 640px) {
  header .bar {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 16px;
  }

  main {
    margin: 0 12px 32px;
    padding: 28px 20px 36px;
  }

  h1 {
    font-size: 34px;
  }
}