:root {
  --color-bg: #ffffff;
  --color-fg: #1a1f1c;
  --color-muted: #5b655f;
  --color-border: #e4e8e5;
  --color-brand: #2e7d5b;
  --color-brand-dark: #1f5b41;
  --max-width: 760px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #12140f;
    --color-fg: #eef1ee;
    --color-muted: #a6afa9;
    --color-border: #2a2f2a;
    --color-brand: #4fae86;
    --color-brand-dark: #6cc39c;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: var(--color-brand-dark);
}

.site-header {
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-fg);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand__dot {
  color: var(--color-brand);
}

nav.site-nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

nav.site-nav a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

nav.site-nav a[aria-current="page"] {
  color: var(--color-brand-dark);
}

nav.site-nav a:hover,
nav.site-nav a:focus-visible {
  color: var(--color-fg);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

main h1 {
  font-size: 1.9rem;
  margin-bottom: 0.25rem;
  letter-spacing: -0.01em;
}

main h2 {
  font-size: 1.25rem;
  margin-top: 2.25rem;
}

.meta {
  color: var(--color-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.lede {
  color: var(--color-muted);
  font-size: 1.05rem;
}

ul,
ol {
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.4rem;
}

.card {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

.card h3 {
  margin-top: 0;
  font-size: 1.05rem;
}

.button {
  display: inline-block;
  background: var(--color-brand);
  color: #ffffff;
  padding: 0.6rem 1.1rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.button:hover,
.button:focus-visible {
  background: var(--color-brand-dark);
}

.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: 2rem;
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  color: var(--color-muted);
  font-size: 0.85rem;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  background: var(--color-bg);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  z-index: 10;
}

@media (max-width: 480px) {
  main h1 {
    font-size: 1.6rem;
  }
}