* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
}

body {
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #111827;
  background:
    radial-gradient(circle at 22% 18%, rgba(99, 179, 237, 0.22), transparent 28rem),
    radial-gradient(circle at 78% 20%, rgba(34, 197, 94, 0.14), transparent 24rem),
    linear-gradient(135deg, #f8fafc 0%, #eef6f8 55%, #f7fafc 100%);
}

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

.panel {
  width: min(560px, 100%);
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 28px 80px rgba(15, 23, 42, 0.12);
  padding: 44px;
  text-align: center;
}

.signal {
  width: 56px;
  height: 56px;
  margin: 0 auto 22px;
  border-radius: 18px;
  background: linear-gradient(135deg, #0f172a, #36c5d8 55%, #2563eb);
  box-shadow: 0 18px 45px rgba(37, 99, 235, 0.22);
}

.eyebrow {
  margin-bottom: 14px;
  color: #64748b;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  color: #0f172a;
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.02;
  letter-spacing: -0.05em;
}

.subtitle {
  margin: 18px auto 0;
  max-width: 420px;
  color: #64748b;
  font-size: 16px;
  line-height: 1.6;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
  padding: 10px 14px;
  border-radius: 999px;
  color: #047857;
  background: #ecfdf5;
  border: 1px solid #bbf7d0;
  font-size: 13px;
  font-weight: 800;
}

.status span {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #10b981;
}