:root {
  --bg: #0f1117;
  --card: #181b24;
  --line: #2a2f3d;
  --text: #e8eaf0;
  --muted: #9aa3b5;
  --accent: #6ea8ff;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main { flex: 1; width: 100%; max-width: 640px; margin: 0 auto; padding: 48px 20px; }
h1 { font-size: 2rem; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 28px 0 6px; }
p, li { color: var(--muted); }
a { color: var(--accent); }
.hero { text-align: center; padding-top: 12vh; }
.hero p { font-size: 1.1rem; margin: 0 0 28px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  color: #1f1f1f;
  border-radius: 8px;
  padding: 12px 22px;
  font-weight: 600;
  text-decoration: none;
}
.btn:hover { background: #f1f3f8; }
.btn svg { width: 20px; height: 20px; }
.note { font-size: .9rem; margin-top: 18px; }
.error { color: #ff8f8f; }
footer { text-align: center; padding: 20px; font-size: .85rem; color: var(--muted); }
footer a { margin: 0 8px; }