:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f4f1;
  color: #151515;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100svh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 50% 10%, rgba(255, 255, 255, 0.95), transparent 48%),
    #f4f4f1;
}

.card {
  width: min(100%, 480px);
  padding: 48px 40px;
  border: 1px solid rgba(21, 21, 21, 0.1);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 24px 70px rgba(21, 21, 21, 0.08);
  text-align: center;
}

.mark {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 28px;
  border-radius: 18px;
  background: #151515;
  color: #fff;
  font-size: 32px;
}

.eyebrow {
  margin: 0 0 12px;
  color: #666;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(34px, 8vw, 52px);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.copy,
.note {
  margin: 22px auto 0;
  color: #555;
  font-size: 17px;
  line-height: 1.55;
}

.note {
  padding-top: 20px;
  border-top: 1px solid rgba(21, 21, 21, 0.1);
  font-size: 14px;
}

@media (max-width: 520px) {
  .card {
    padding: 40px 26px;
    border-radius: 24px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    background: #111;
    color: #f5f5f2;
  }

  body {
    background:
      radial-gradient(circle at 50% 10%, rgba(55, 55, 55, 0.7), transparent 48%),
      #111;
  }

  .card {
    border-color: rgba(255, 255, 255, 0.11);
    background: rgba(30, 30, 30, 0.88);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
  }

  .mark {
    background: #f5f5f2;
    color: #151515;
  }

  .eyebrow,
  .copy,
  .note {
    color: #b8b8b3;
  }

  .note {
    border-top-color: rgba(255, 255, 255, 0.11);
  }
}