:root {
  --bg: #0b0b12;
  --fg: #f4f4f8;
  --muted: #9a9ab0;
  --accent-1: #7c5cff;
  --accent-2: #00d4ff;
}
* { box-sizing: border-box; margin: 0; }
html, body { height: 100%; }
body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--fg);
  display: grid;
  place-items: center;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}
body::before, body::after {
  content: "";
  position: fixed;
  width: 520px; height: 520px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: .35;
  z-index: -1;
  animation: float 14s ease-in-out infinite alternate;
}
body::before { background: var(--accent-1); top: -160px; left: -120px; }
body::after  { background: var(--accent-2); bottom: -180px; right: -140px; animation-delay: -7s; }
@keyframes float { to { transform: translate(80px, 60px) scale(1.1); } }
main {
  text-align: center;
  padding: 56px 48px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 28px;
  background: rgba(255,255,255,.03);
  backdrop-filter: blur(20px);
  box-shadow: 0 30px 80px rgba(0,0,0,.45);
  animation: rise .8s cubic-bezier(.2,.8,.2,1) both;
  margin: 16px;
}
@keyframes rise { from { opacity: 0; transform: translateY(16px) scale(.98); } }
.badge {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 6px 12px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 999px;
  margin-bottom: 24px;
}
.badge::before { content: "●"; color: #3ddc97; margin-right: 8px; }
h1 {
  font-size: clamp(40px, 9vw, 84px);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.05;
  background: linear-gradient(120deg, #fff 20%, var(--accent-2) 60%, var(--accent-1));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
p { color: var(--muted); margin-top: 16px; font-size: 17px; }
a.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 36px;
  padding: 14px 26px;
  border-radius: 999px;
  color: var(--fg);
  text-decoration: none;
  font-weight: 600;
  background: linear-gradient(120deg, var(--accent-1), var(--accent-2));
  box-shadow: 0 10px 30px rgba(124,92,255,.35);
  transition: transform .2s ease, box-shadow .2s ease;
}
a.btn:hover { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(0,212,255,.35); }
a.btn:active { transform: scale(.97); }
a.btn span { transition: transform .2s ease; }
a.btn:hover span { transform: translateX(4px); }
a.btn.back:hover span { transform: translateX(-4px); }