:root {
  color-scheme: light dark;
  --bg: #0f1419;
  --card: #1a222d;
  --text: #e8edf4;
  --muted: #9aa8b8;
  --accent: #6ee7b7;
  --link: #7dd3fc;
  --border: #2a3544;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f9fc;
    --card: #ffffff;
    --text: #1a2230;
    --muted: #5c6b7a;
    --accent: #047857;
    --link: #0369a1;
    --border: #d8e0ea;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--link); }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 92%, black);
  position: sticky;
  top: 0;
}

.brand {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--accent);
  text-decoration: none;
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  font-size: 0.95rem;
}

.site-header nav a {
  text-decoration: none;
}

.content {
  max-width: 44rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 0.5rem;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  line-height: 1.2;
}

h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.2rem;
}

.lede {
  font-size: 1.05rem;
}

ul {
  padding-left: 1.25rem;
}

li + li { margin-top: 0.35rem; }

.contact-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.1rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-links {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.hero-links a {
  display: block;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}

.hero-links a span {
  display: block;
  font-weight: 400;
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.2rem;
}