:root {
  --page: #0b0b0d;
  --surface: #141416;
  --line: rgba(255, 255, 255, 0.08);
  --fg: #f5f5f7;
  --fg-muted: #9c9ca6;
  --fg-dim: #8a8a94;
  --accent: #2ed3b7;
  --accent-fg: #0b0b0d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--fg);
  font-family: "Manrope", ui-sans-serif, system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

header, main, footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  justify-content: space-between;
  padding-top: 20px;
  padding-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--fg);
  font-weight: 700;
  text-decoration: none;
}

.brand img { width: 28px; height: 28px; }

nav a {
  color: var(--fg-muted);
  font-size: 14px;
  text-decoration: none;
}

nav { display: flex; gap: 16px; }

nav a:hover { color: var(--fg); }

h1 {
  font-size: clamp(30px, 6vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 40px 0 16px;
}

h2 {
  font-size: 22px;
  letter-spacing: -0.02em;
  margin: 40px 0 8px;
}

h3 { font-size: 16px; margin: 24px 0 4px; }

p, li { color: var(--fg-muted); font-size: 16px; }

strong { color: var(--fg); }

.lead { font-size: 18px; }

.cta {
  display: inline-block;
  margin: 16px 0 8px;
  padding: 12px 24px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 700;
  text-decoration: none;
}

.cta:hover { filter: brightness(1.08); }

.note { font-size: 13px; color: var(--fg-dim); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 8px 24px 16px;
  margin: 32px 0;
}

footer {
  margin-top: 64px;
  padding-top: 24px;
  padding-bottom: 40px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--fg-dim);
}

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