:root {
  --accent: #e8264a;
  --bg: #ffffff;
  --surface: #f6f6f8;
  --text: #1c1c1e;
  --muted: #6c6c70;
  --border: #e3e3e8;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #ff5a74;
    --bg: #000000;
    --surface: #1c1c1e;
    --text: #f2f2f7;
    --muted: #a1a1a6;
    --border: #2c2c2e;
  }
}

* { box-sizing: border-box; }

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

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

.site-header, main, .site-footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 20px;
  padding-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}
.brand img { border-radius: 7px; }

nav { display: flex; gap: 20px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--text); }

.hero { text-align: center; padding: 48px 0 32px; }
.app-icon { border-radius: 28px; box-shadow: 0 8px 24px rgb(0 0 0 / 0.15); }
.hero h1 { font-size: 44px; letter-spacing: -0.02em; margin: 20px 0 8px; }
.lede { font-size: 20px; color: var(--muted); max-width: 32em; margin: 0 auto; }

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  padding: 24px 0 48px;
}
.features div { background: var(--surface); border-radius: 16px; padding: 20px; }
.features h2 { font-size: 17px; margin: 0 0 6px; }
.features p { margin: 0; color: var(--muted); font-size: 15px; }

.prose { padding: 16px 0 48px; overflow-wrap: anywhere; }
.prose h1 { font-size: 34px; letter-spacing: -0.01em; line-height: 1.2; }
.prose h2 { font-size: 22px; margin-top: 2em; }
.prose h3 { font-size: 18px; margin-top: 1.6em; }
.prose li { margin: 0.35em 0; }

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