:root {
  color-scheme: light dark;
  --bg: #f5f7f8;
  --surface: #ffffff;
  --text: #102943;
  --muted: #637381;
  --blue: #2996ef;
  --mint: #61c7a3;
  --border: rgba(16, 41, 67, 0.12);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c1622;
    --surface: #132235;
    --text: #f5f9fc;
    --muted: #b8c4cf;
    --border: rgba(255, 255, 255, 0.14);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

main {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 72px;
}

header, section, nav {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
  margin-bottom: 18px;
}

h1, h2 { line-height: 1.2; }
h1 { margin: 0 0 8px; font-size: clamp(2rem, 7vw, 3rem); }
h2 { margin-top: 0; font-size: 1.25rem; }
p, li { color: var(--muted); }
a { color: var(--blue); font-weight: 650; }
.brand { color: var(--blue); font-weight: 800; }
.language-links { display: flex; flex-wrap: wrap; gap: 12px; }
.language-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
}
.notice { border-left: 5px solid #f2a24a; }
footer { color: var(--muted); font-size: 0.9rem; text-align: center; }