:root { --bg: #140c3a; --ink: #fff; --muted: #c9c3f0; --accent: #ffd23f; }
* { box-sizing: border-box; margin: 0; }
html, body { height: 100%; }
body {
  display: grid; place-items: center; padding: 16px; text-align: center; color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(ellipse at 20% 0%, #3a1c8a 0%, transparent 55%),
              radial-gradient(ellipse at 100% 100%, #0f5a73 0%, transparent 55%), var(--bg);
}
main { max-width: 34rem; }
.icon { font-size: clamp(56px, 18vw, 96px); line-height: 1; }
h1 { margin-top: 12px; font-size: clamp(28px, 8vw, 44px); font-weight: 900; line-height: 1.1; }
p { margin-top: 12px; font-size: clamp(16px, 4.5vw, 20px); color: var(--muted); line-height: 1.4; }
.tag { display: inline-block; margin-top: 20px; padding: 6px 16px; border-radius: 999px; background: var(--accent); color: #1a1240; font-weight: 800; }
code { background: rgba(255,255,255,.12); padding: 2px 8px; border-radius: 6px; color: var(--ink); }