:root {
  color-scheme: light dark;
  --bg: #0f1115;
  --card: #171a21;
  --text: #f3f4f6;
  --muted: #a6adbb;
  --border: #2a2f3a;
  --accent: #7c9cff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, #1b2130 0, var(--bg) 42%),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

.wrapper {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 80px 0;
}

.card {
  background: rgba(23, 26, 33, 0.88);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(12px);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.logo-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--accent);
  color: #0b1020;
  font-weight: 800;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(32px, 6vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h2 {
  margin-top: 32px;
  font-size: 21px;
}

p {
  color: var(--muted);
}

strong {
  color: var(--text);
}

nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 36px;
  padding-top: 26px;
  border-top: 1px solid var(--border);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

footer {
  margin-top: 24px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 600px) {
  .wrapper {
    padding: 24px 0;
  }

  .card {
    padding: 26px;
    border-radius: 16px;
  }
}