:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #07101d;
  color: #f5fbff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, rgba(95, 172, 255, 0.28), transparent 34rem), #07101d;
}

.spine {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 64px;
  display: grid;
  gap: 20px;
}

.hero, .step {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 24px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.07);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
}

.eyebrow, .step-label {
  margin: 0 0 8px;
  color: #9bd4ff;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1, h2 { margin: 0 0 12px; }

.form { display: grid; gap: 16px; }

label { display: grid; gap: 8px; font-weight: 800; }

input, select, button, .button-link {
  font: inherit;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 12px 14px;
}

input, select {
  width: 100%;
  background: rgba(0, 0, 0, 0.28);
  color: #f5fbff;
}

button, .button-link {
  cursor: pointer;
  color: #05101f;
  background: linear-gradient(135deg, #fff0a6, #8fd9ff);
  font-weight: 900;
  text-decoration: none;
  display: inline-block;
}

button:disabled { opacity: 0.5; cursor: not-allowed; }

iframe {
  width: 100%;
  min-height: 360px;
  border: 0;
  border-radius: 18px;
  background: #02070f;
}

pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: #c9e8ff;
}

[hidden] { display: none !important; }