:root {
  color-scheme: dark;
  --bg: #08111f;
  --card: rgba(255, 255, 255, 0.08);
  --card-border: rgba(255, 255, 255, 0.14);
  --text: #f7fbff;
  --accent: #2f7cff;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background:
    radial-gradient(circle at 25% 20%, rgba(47, 124, 255, 0.35), transparent 32rem),
    radial-gradient(circle at 80% 70%, rgba(31, 201, 161, 0.22), transparent 28rem),
    linear-gradient(135deg, #070b13 0%, var(--bg) 55%, #101928 100%);
  color: var(--text);
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
}

.card {
  width: min(680px, 100%);
  padding: clamp(2rem, 7vw, 5rem);
  text-align: center;
  border: 1px solid var(--card-border);
  border-radius: 32px;
  background: var(--card);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(20px);
}

.logo-mark {
  width: 76px;
  height: 76px;
  margin: 0 auto 2rem;
  display: grid;
  place-items: center;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--accent), #1fc9a1);
  color: white;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.06em;
  box-shadow: 0 18px 42px rgba(47, 124, 255, 0.35);
}

h1 {
  margin: 0;
  font-size: clamp(4rem, 15vw, 9rem);
  line-height: 0.9;
  letter-spacing: -0.08em;
}

@media (max-width: 520px) {
  .page {
    padding: 1rem;
  }

  .card {
    border-radius: 24px;
  }
}