:root {
  color-scheme: dark;
  --bg: #0d0d12;
  --fg: #ececf1;
  --muted: #9a9aa8;
  --accent: #a78bfa;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main {
  flex: 1;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 16px 32px;
}
main.home {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}
h1 { font-size: 2.5rem; letter-spacing: -0.02em; margin: 0 0 12px; }
.home h1 { font-size: clamp(2.5rem, 8vw, 4rem); }
h2 { font-size: 1.15rem; margin: 32px 0 8px; }
p { margin: 0 0 12px; }
.lead { color: var(--muted); font-size: 1.15rem; margin-bottom: 32px; }
a { color: var(--accent); }
.button {
  display: inline-block;
  padding: 12px 24px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
}
.button:hover { background: var(--accent); color: var(--bg); }
footer {
  padding: 24px 16px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}
footer a { color: var(--muted); margin: 0 8px; }
.back { display: inline-block; margin-bottom: 24px; }