:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #071126;
  color: #eef6ff;
  line-height: 1.6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #152b57 0, #071126 42rem);
}

main {
  width: min(100% - 2rem, 52rem);
  margin: 0 auto;
  padding: 3rem 0 5rem;
}

.card {
  background: rgba(8, 20, 48, 0.94);
  border: 1px solid #4fdcff;
  border-radius: 1.25rem;
  padding: clamp(1.25rem, 4vw, 2.5rem);
  box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.28);
}

h1, h2, h3 { line-height: 1.2; }
h1 { color: #fff0a6; margin-top: 0; }
h2 { color: #78e6ff; margin-top: 2.25rem; }
h3 { color: #c9b2ff; margin-top: 1.5rem; }
p, li { color: #dce9fa; }
a { color: #76e5ff; }
a:hover, a:focus { color: #fff0a6; }

.language-nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 1.5rem 0 2rem;
}

.language-nav a, .button-link {
  display: inline-block;
  border: 1px solid #76e5ff;
  border-radius: 0.75rem;
  padding: 0.65rem 1rem;
  text-decoration: none;
  background: #102c51;
}

.summary {
  border-left: 0.25rem solid #68f1c6;
  padding: 0.8rem 1rem;
  background: rgba(28, 88, 82, 0.24);
}

table { width: 100%; border-collapse: collapse; }
th, td { border: 1px solid #345078; padding: 0.75rem; text-align: left; vertical-align: top; }
th { background: #102c51; color: #fff0a6; }
.muted, footer { color: #a8b8cf; }
.language-section + .language-section { border-top: 1px solid #345078; margin-top: 3rem; padding-top: 2rem; }
footer { margin-top: 2rem; }

@media (max-width: 42rem) {
  main { width: min(100% - 1rem, 52rem); padding: 0.5rem 0 2rem; }
  .card { border-radius: 0.9rem; padding: 1rem; }
  table, thead, tbody, tr, th, td { display: block; }
  thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  tr { border: 1px solid #345078; margin-bottom: 0.8rem; }
  th, td { border: 0; }
  td::before { content: attr(data-label); display: block; color: #fff0a6; font-weight: 700; margin-bottom: 0.25rem; }
}