:root {
  color-scheme: light dark;
  --bg: #fafaf7;
  --fg: #0e0e0e;
  --muted: #6b6b66;
  --accent: #0e0e0e;
  --card: #ffffff;
  --border: #e5e3dc;
  --maxw: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0c0b;
    --fg: #f3f1ec;
    --muted: #8a8a83;
    --accent: #f3f1ec;
    --card: #161614;
    --border: #2a2a26;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text",
    system-ui, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}
a:hover { opacity: 0.7; }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 28px;
  border-bottom: 1px solid var(--border);
}
.nav .brand {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.2px;
  border-bottom: 0;
}
.nav nav a {
  margin-left: 22px;
  font-size: 15px;
  border-bottom: 0;
  color: var(--muted);
}
.nav nav a:hover { color: var(--fg); }

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 64px 28px 96px;
}

.hero h1 {
  font-size: 52px;
  line-height: 1.05;
  letter-spacing: -1.2px;
  margin: 0 0 14px;
  font-weight: 700;
}
.hero .tagline {
  font-size: 19px;
  color: var(--muted);
  margin: 0 0 56px;
}

.apps {
  margin-bottom: 56px;
}
.app {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}
.app h2 {
  margin: 0 0 8px;
  font-size: 26px;
  letter-spacing: -0.4px;
}
.app p { margin: 0 0 12px; }
.app .meta {
  color: var(--muted);
  font-size: 14px;
  margin: 16px 0 0;
}

.contact {
  border-top: 1px solid var(--border);
  padding-top: 32px;
}
.contact h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
}
.contact p {
  margin: 0;
  color: var(--muted);
}

footer {
  border-top: 1px solid var(--border);
  padding: 24px 28px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

/* Article pages (privacy, support) */
.article h1 {
  font-size: 36px;
  letter-spacing: -0.6px;
  margin: 0 0 8px;
}
.article .updated {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 40px;
}
.article h2 {
  font-size: 20px;
  margin: 36px 0 8px;
  letter-spacing: -0.2px;
}
.article p, .article li { font-size: 16px; }
.article ul { padding-left: 20px; }