:root {
  --accent: #FF7A3B;
  --bg: #ffffff;
  --fg: #111111;
  --muted-fg: #6b6b6b;
  --card-bg: #f7f7f7;
  --card-border: #e5e5e5;
  --radius-md: 12px;
  --radius-lg: 16px;
  --max-width: 880px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0a;
    --fg: #f5f5f5;
    --muted-fg: #a3a3a3;
    --card-bg: #161616;
    --card-border: #262626;
  }
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 24px 0;
}
.wordmark {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--accent);
}
.nav nav a {
  margin-left: 20px;
  color: var(--muted-fg);
  font-size: 15px;
}
.nav nav a:hover { color: var(--fg); text-decoration: none; }

main { max-width: var(--max-width); margin: 0 auto; padding: 24px; }

.hero { padding: 80px 0 64px; text-align: center; }
.hero h1 {
  font-size: 48px;
  line-height: 1.1;
  letter-spacing: -1.2px;
  font-weight: 800;
  margin: 0 0 24px;
}
.hero .lede {
  font-size: 19px;
  color: var(--muted-fg);
  max-width: 620px;
  margin: 0 auto 40px;
}
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 14px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
}
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { background: #e96a2c; text-decoration: none; }
.btn.secondary {
  background: var(--card-bg);
  color: var(--fg);
  border: 1px solid var(--card-border);
}
.note { color: var(--muted-fg); margin-top: 20px; font-size: 14px; }

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  padding-bottom: 80px;
}
.feature {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.feature h3 { margin: 0 0 8px; font-size: 18px; font-weight: 700; }
.feature p { margin: 0; color: var(--muted-fg); font-size: 15px; line-height: 1.5; }

.doc {
  max-width: 720px;
  margin: 40px auto 80px;
  padding: 0 24px;
}
.doc h1 {
  font-size: 36px;
  letter-spacing: -0.8px;
  margin: 0 0 8px;
  font-weight: 800;
}
.doc .updated { color: var(--muted-fg); font-size: 14px; margin-bottom: 32px; }
.doc h2 {
  font-size: 22px;
  margin: 40px 0 12px;
  font-weight: 700;
}
.doc p, .doc li { color: var(--fg); }
.doc ul { padding-left: 20px; }

footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 24px 48px;
  text-align: center;
  color: var(--muted-fg);
  font-size: 14px;
  border-top: 1px solid var(--card-border);
}
footer a { color: var(--muted-fg); }
footer a:hover { color: var(--fg); }

@media (max-width: 600px) {
  .hero { padding: 48px 0 40px; }
  .hero h1 { font-size: 36px; }
  .hero .lede { font-size: 17px; }
}