:root {
  --text: #f7f7f2;
  --muted: #c9d1d8;
  --line: rgba(255, 255, 255, 0.18);
  --accent: #7fd6cb;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    linear-gradient(rgba(17, 24, 32, 0.78), rgba(17, 24, 32, 0.84)),
    url("../img/bg.png") center / cover no-repeat;
}

a {
  color: inherit;
  text-decoration-color: var(--accent);
  text-underline-offset: 0.22em;
  transition: color 160ms ease, text-decoration-color 160ms ease;
}

a:hover,
a:focus-visible {
  color: var(--accent);
  text-decoration-color: currentColor;
}

.site-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 32px;
}

.notice {
  width: min(100%, 720px);
  text-align: center;
}

.brand {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1;
}

.message {
  max-width: 520px;
  margin: 28px auto 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.contact {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 14px;
  margin: 34px auto 0;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  color: var(--text);
  font-style: normal;
  line-height: 1.6;
}

.contact span {
  color: var(--line);
}

@media (max-width: 520px) {
  .site-shell {
    padding: 24px;
  }

  .contact {
    align-items: center;
    flex-direction: column;
  }

  .contact span {
    display: none;
  }
}