:root { color-scheme: dark; }
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: radial-gradient(1200px 800px at 20% 10%, #1b2b44 0%, #0b1220 55%, #070b14 100%);
  color: #e8eefc;
}
a { color: #9cc2ff; text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 980px; margin: 0 auto; padding: 36px 18px 60px; }
.hero { padding: 26px 22px; border: 1px solid rgba(255,255,255,0.08); border-radius: 18px; background: rgba(0,0,0,0.25); }
.badge { display: inline-block; padding: 6px 10px; border-radius: 999px; background: rgba(156,194,255,0.12); border: 1px solid rgba(156,194,255,0.22); font-size: 13px; }
h1 { margin: 14px 0 8px; font-size: 40px; letter-spacing: 0.2px; }
.subtitle { margin: 0 0 18px; font-size: 16px; color: rgba(232,238,252,0.82); line-height: 1.5; }

.cta { display: flex; gap: 10px; flex-wrap: wrap; margin: 12px 0 8px; }
.btn { display: inline-block; padding: 12px 14px; border-radius: 14px; border: 1px solid rgba(255,255,255,0.12); }
.btn.primary { background: rgba(156,194,255,0.18); }
.btn.secondary { background: rgba(255,255,255,0.06); }

.note { margin-top: 10px; font-size: 13px; color: rgba(232,238,252,0.7); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 16px; }
.card {
  padding: 16px 16px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  background: rgba(0,0,0,0.22);
}
.card h2 { margin: 0 0 10px; font-size: 16px; }
.card ul { margin: 0; padding-left: 18px; color: rgba(232,238,252,0.84); line-height: 1.55; }

.section {
  margin-top: 18px;
  padding: 16px 16px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  background: rgba(0,0,0,0.18);
}
.section h2 { margin: 0 0 10px; font-size: 18px; }
.section ol { margin: 0; padding-left: 18px; line-height: 1.65; color: rgba(232,238,252,0.84); }
.keywords { margin: 0; color: rgba(232,238,252,0.82); line-height: 1.6; }

.footer { margin-top: 18px; text-align: center; font-size: 13px; color: rgba(232,238,252,0.65); }

@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr; }
  h1 { font-size: 34px; }
}