:root {
  --bg: #F7F1E8;
  --surface: #FFFBF4;
  --text: #1E1B18;
  --muted: #5A524A;
  --line: #E6DCCD;
  --accent: #3E7FBF;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12141C;
    --surface: #1B1E28;
    --text: #F2EEE8;
    --muted: #B9BCC8;
    --line: #2A2E3A;
    --accent: #A3D4FD;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 48px 20px 64px; }
header { display: flex; align-items: center; gap: 14px; margin-bottom: 32px; }
header img { width: 56px; height: 56px; border-radius: 13px; }
header a { color: inherit; text-decoration: none; font-weight: 700; font-size: 22px; }
h1 { font-size: 34px; line-height: 1.15; margin: 0 0 12px; }
h2 { font-size: 22px; margin: 36px 0 8px; }
h3 { font-size: 17px; margin: 20px 0 4px; }
p, li { color: var(--muted); }
strong { color: var(--text); }
a { color: var(--accent); }
.wave {
  height: 6px; border-radius: 3px; margin: 28px 0;
  background: linear-gradient(90deg, #A3D4FD, #C9B8F0, #FFD9B8);
}
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 18px 20px; margin: 16px 0; }
.lang { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-top: 48px; }
nav { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 15px; }
footer { margin-top: 24px; font-size: 13px; color: var(--muted); }