:root {
  --bg: #f7f9fc;
  --fg: #0f172a;
  --accent: #f6821f; /* Cloudflare orange */
  --muted: #64748b;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.hero { max-width: 640px; text-align: center; }
.badge {
  display: inline-block;
  font-size: 13px;
  color: #047857;
  background: #d1fae5;
  border: 1px solid #6ee7b7;
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}
h1 { font-size: 40px; line-height: 1.2; margin-bottom: 16px; }
.sub { font-size: 17px; color: var(--muted); margin-bottom: 12px; }
.hint { font-size: 14px; color: var(--muted); }
code {
  background: #e2e8f0;
  padding: 2px 6px;
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}