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

body {
    display: flex;
    align-items: center;
    justify-content: center;

    background-image: url("/static/media/osya.png");
    background-repeat: space;
    background-size: 180px auto;
    background-color: #0f172a;

    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.card {
    background: rgba(15, 23, 42, 0.88);
    padding: 2rem 3rem;
    border-radius: 12px;

    color: #e5e7eb;
    max-width: 640px;

    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

h1 {
    margin-top: 0;
    font-size: 2rem;
    text-align: center;
}

ul {
    margin: 1.5rem 0;
    padding-left: 1.2rem;
}

li {
    margin: 0.6rem 0;
    line-height: 1.4;
}

a {
    color: #38bdf8;
    text-decoration: none;
    font-weight: 500;
}

a:hover {
    text-decoration: underline;
}

.footer-link {
  margin-top: 1.2rem;
  text-align: center;
}

.footer-link a {
  color: #38bdf8;
  text-decoration: none;
  font-weight: 500;
}

.footer-link a:hover {
  text-decoration: underline;
}

footer.copyright {
  margin-top: 0.6rem;
  font-size: 0.7rem;
  opacity: 0.45;
  text-align: left;
}