:root {
  --bg-1: #120f2b;
  --bg-2: #0a1c23;
  --card-1: rgba(18, 25, 38, 0.88);
  --card-2: rgba(12, 18, 28, 0.9);
  --text: #e7edf9;
  --muted: #b2bdcc;
  --accent-1: #5a7dff;
  --accent-2: #59d2ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  font-family: "Sora", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(
      circle at 20% 20%,
      rgba(90, 125, 255, 0.35),
      transparent 45%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(89, 210, 255, 0.2),
      transparent 40%
    ),
    linear-gradient(130deg, var(--bg-1), var(--bg-2));
}

main {
  width: min(920px, 100%);
}

.card {
  text-align: center;
  padding: 48px 40px;
  border-radius: 28px;
  background: linear-gradient(140deg, var(--card-1), var(--card-2));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 30px 80px rgba(5, 10, 25, 0.6);
  backdrop-filter: blur(12px);
}

.logo {
  width: 72px;
  height: 72px;
  margin: 0 auto;
  padding: 12px;
  border-radius: 20px;
  background: linear-gradient(145deg, #6e7bff, #3dd6ff);
  box-shadow: 0 18px 38px rgba(70, 130, 255, 0.4);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 6px 10px rgba(0, 0, 0, 0.35));
}

h1 {
  margin: 24px 0 12px;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
}

h1 span {
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text;
  color: transparent;
}

p {
  margin: 0 auto;
  max-width: 640px;
  color: var(--muted);
  line-height: 1.6;
  font-size: 16px;
}

footer {
  margin-top: 26px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.45);
}

@media (max-width: 600px) {
  .card {
    padding: 32px 22px;
  }
}