:root {
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;

  --bg: #fafafa;
  --surface: #ffffff;
  --border: #e6e6e6;
  --text: #111111;
  --text-secondary: #555555;
  --text-muted: #888888;
  --accent: #111111;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0e0e;
    --surface: #181818;
    --border: #2a2a2a;
    --text: #f2f2f2;
    --text-secondary: #bababa;
    --text-muted: #777777;
    --accent: #ffffff;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
a:hover { text-decoration-thickness: 2px; }

.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}

.brand {
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.4px;
  margin-bottom: 64px;
  text-transform: uppercase;
}
.brand a { text-decoration: none; }

h1 {
  font-size: 38px;
  font-weight: 700;
  letter-spacing: -0.8px;
  line-height: 1.15;
  margin: 0 0 24px;
}

h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 40px 0 12px;
  letter-spacing: -0.2px;
}

p, ul, ol {
  color: var(--text-secondary);
  margin: 0 0 16px;
}

ul, ol { padding-left: 22px; }
li { margin-bottom: 6px; }

.lead {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 32px;
}

.muted { color: var(--text-muted); }

.meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 40px;
}
.nav a {
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}
.nav a:hover { color: var(--text); border-bottom-color: var(--text); }

.back {
  display: inline-block;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 32px;
  text-decoration: none;
}
.back:hover { color: var(--text); }

.app-badge {
  display: inline-block;
  margin-top: 8px;
  padding: 10px 18px;
  background: var(--accent);
  color: var(--bg);
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}
.app-badge:hover { opacity: 0.9; }

code {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 14px;
  padding: 2px 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
}