:root {
  --bg: #0b1020;
  --card: #121a33;
  --fg: #e8ecf7;
  --muted: #9aa6c4;
  --accent: #5b8cff;
  --border: #24304f;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: radial-gradient(1200px 600px at 50% -10%, #1a2648 0%, var(--bg) 55%);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  line-height: 1.7;
  min-height: 100vh;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 56px 22px 96px; }
header.hero { text-align: center; margin-bottom: 40px; }
.badge {
  display: inline-block; font-size: 12px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent); border: 1px solid var(--border); border-radius: 999px;
  padding: 6px 14px; background: rgba(91,140,255,.08); margin-bottom: 18px;
}
h1 { font-size: clamp(26px, 4vw, 38px); margin: 0 0 12px; line-height: 1.25; }
h2 { font-size: 20px; margin: 34px 0 10px; }
h3 { font-size: 16px; margin: 22px 0 8px; }
p, li { color: var(--fg); }
.lead { color: var(--muted); font-size: 17px; }
.card {
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
  border: 1px solid var(--border); border-radius: 16px; padding: 24px 26px; margin: 22px 0;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.links { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; margin-top: 26px; }
.btn {
  display: inline-block; padding: 11px 20px; border-radius: 10px;
  border: 1px solid var(--border); background: rgba(91,140,255,.12); color: var(--fg); font-weight: 600;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: #06122e; }
ul { padding-left: 20px; }
code { background: rgba(255,255,255,.06); padding: 2px 6px; border-radius: 6px; font-size: .92em; }
footer { color: var(--muted); font-size: 13px; text-align: center; margin-top: 48px; border-top: 1px solid var(--border); padding-top: 20px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
table { width: 100%; border-collapse: collapse; margin: 10px 0; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }