:root{
  --bg1: #0b1220;
  --bg2: #111b2e;
  --card: rgba(255,255,255,.06);
  --border: rgba(255,255,255,.12);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.72);
  --shadow: 0 12px 40px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body{
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 600px at 20% 20%, rgba(99,102,241,.35), transparent 60%),
    radial-gradient(900px 600px at 80% 30%, rgba(16,185,129,.25), transparent 55%),
    linear-gradient(180deg, var(--bg1), var(--bg2));
  display: grid;
  place-items: center;
  padding: 24px;
}

.card{
  width: min(680px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 34px 28px;
  backdrop-filter: blur(10px);
}

.badge{
  display: inline-block;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  margin: 0 0 14px 0;
}

h1{
  margin: 0 0 10px 0;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.08;
}

.subtitle{
  margin: 0 0 22px 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
}

.actions{
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.button{
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 12px 16px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 650;
  color: #0b1220;
  background: rgba(255,255,255,.92);
  transition: transform .08s ease, filter .2s ease, background .2s ease;
}

.button:hover{
  transform: translateY(-1px);
  filter: brightness(1.02);
}

.button:active{
  transform: translateY(0px);
}

.small{
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.small a{
  color: rgba(255,255,255,.88);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer{
  margin-top: 26px;
  color: rgba(255,255,255,.55);
  font-size: 13px;
}