:root {
  --bg: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: #e5e5ea;
  --accent: #ff6a1a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --line: #2c2c2e;
    --accent: #ff8a47;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}

main, header, footer {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 16px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  padding-bottom: 24px;
}

header a.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}

header img { width: 32px; height: 32px; border-radius: 7px; }

nav a { color: var(--muted); text-decoration: none; margin-left: 16px; font-size: 15px; }
nav a:hover { color: var(--text); }

h1 { font-size: 34px; line-height: 1.15; margin: 24px 0 8px; }
h2 { font-size: 21px; margin: 32px 0 8px; }
p, li { color: var(--text); }
.lead { font-size: 20px; color: var(--muted); margin-top: 0; }
.muted { color: var(--muted); }
a { color: var(--accent); }

.hero-icon { width: 96px; height: 96px; border-radius: 22px; margin-top: 16px; }

footer {
  margin-top: 64px;
  padding-top: 20px;
  padding-bottom: 40px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--muted);
}

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