:root {
  --bg: #07111d;
  --panel: rgba(12, 21, 37, 0.88);
  --text: #edf3ff;
  --muted: #b9c5df;
  --accent: #4f6df5;
  --accent-strong: #3655dc;
  --line: rgba(128, 153, 204, 0.24);
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

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

body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(79, 109, 245, 0.24), transparent 34%),
    linear-gradient(180deg, #08111a 0%, #07111d 52%, #050b14 100%);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

.shell {
  width: min(760px, 100%);
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  text-align: center;
}

.logo {
  display: block;
  width: min(260px, 72%);
  height: auto;
  margin: 0 auto 22px;
  border-radius: 18px;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.lede {
  margin: 0 auto;
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
  justify-content: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 14px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: transform 140ms ease, background 140ms ease, box-shadow 140ms ease;
}

.button:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(54, 85, 220, 0.28);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
  box-shadow: none;
}

@media (max-width: 640px) {
  .shell {
    padding: 26px 22px;
  }

  .actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}