:root {
  --bg: #0b1220;
  --card: #131d31;
  --text: #eef3ff;
  --muted: #9fb0d3;
  --accent: #4f8cff;
  --accent-hover: #3f7cf0;
  --ring: rgba(79, 140, 255, 0.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 20%, #172544 0%, var(--bg) 45%, #060a14 100%);
}

.wrap {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: min(760px, 100%);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 28px;
  backdrop-filter: blur(3px);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.35);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 14px;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.15;
}

.lead {
  margin: 0 0 24px;
  color: #d7e3ff;
  font-size: clamp(16px, 2.2vw, 18px);
  line-height: 1.55;
}

.btn {
  display: inline-block;
  text-decoration: none;
  color: #fff;
  background: var(--accent);
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 600;
  transition: background 0.2s ease, transform 0.05s ease;
  box-shadow: 0 0 0 0 var(--ring);
}

.btn:hover { background: var(--accent-hover); }
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--ring);
}
.btn:active { transform: translateY(1px); }

.note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}