:root {
  color-scheme: light dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f0f8;
  color: #251d2d;
}

* { box-sizing: border-box; }

body {
  min-height: 100svh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 5vw, 3rem);
  background:
    radial-gradient(circle at 10% 10%, #d9caef 0, transparent 36rem),
    linear-gradient(145deg, #faf8fc, #eee7f4);
}

.card {
  width: min(100%, 34rem);
  padding: clamp(1.5rem, 6vw, 3.25rem);
  border: 1px solid #d7cbe2;
  border-radius: 1.75rem;
  background: #fffdfef2;
  box-shadow: 0 1.5rem 5rem #3827461f;
}

.eyebrow {
  margin: 0 0 1rem;
  color: #67527c;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .11em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 9vw, 3.5rem);
  line-height: 1;
  letter-spacing: -.045em;
}

p { line-height: 1.65; }

.button {
  display: flex;
  width: 100%;
  min-height: 3.25rem;
  margin-top: 1rem;
  align-items: center;
  justify-content: center;
  border: 2px solid #5f3f80;
  border-radius: 999px;
  background: #5f3f80;
  color: #fff;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
}

.button.secondary { background: transparent; color: #4b3165; }
.button:focus-visible, summary:focus-visible { outline: 4px solid #c3a4e8; outline-offset: 4px; }
.button[hidden] { display: none; }
details { margin-top: 1.5rem; }
summary { cursor: pointer; font-weight: 750; }
.fine-print { margin: 1.5rem 0 0; color: #675d6d; font-size: .9rem; }

@media (prefers-color-scheme: dark) {
  :root { background: #17121c; color: #f8f3fb; }
  body { background: radial-gradient(circle at 10% 10%, #3b294d 0, transparent 32rem), #17121c; }
  .card { border-color: #493b54; background: #241c2bee; }
  .eyebrow, .fine-print { color: #cdbed8; }
  .button.secondary { color: #e4d2f7; border-color: #b894d8; }
}

@media (prefers-reduced-motion: no-preference) {
  .button { transition: transform .16s ease, filter .16s ease; }
  .button:hover { transform: translateY(-1px); filter: brightness(1.08); }
}

@media (forced-colors: active) {
  .card, .button { border: 2px solid CanvasText; }
}