:root{
  --brand:#2f6efc; --bg:#0e1a2b; --paper:#fff; --ink:#1e2a3a; --muted:#5b6a77; --line:#e6eef7;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Arial,sans-serif;background:#f6f9fc;color:var(--ink);line-height:1.6}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.site-header{background:linear-gradient(180deg,#0e1a2b,#0f213f);color:#fff}
.site-header .wrap{display:flex;gap:20px;align-items:center;justify-content:space-between;padding:16px 20px}
.brand{font-weight:700;letter-spacing:.2px}
.top-nav a{color:#cfe1ff;margin-left:16px}
main.wrap{padding:28px 20px}
h1,h2,h3{line-height:1.25}
h1{font-size:clamp(1.8rem,3vw,2.2rem);margin:.2em 0 .6em}
h2{font-size:clamp(1.3rem,2.4vw,1.6rem);margin:1.4em 0 .5em}
h3{font-size:clamp(1.1rem,1.8vw,1.25rem);margin:1em 0 .4em}
.lead{color:#37506a;max-width:75ch}
.card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:0 1px 0 rgba(16,24,40,.04)}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:1.25fr .9fr}
@media(max-width:900px){.grid-2{grid-template-columns:1fr}}
.media{background:#f2f6ff;border:1px solid var(--line);border-radius:14px;padding:14px}
.kbd{font-family:ui-monospace,Menlo,Consolas,monospace;background:#f3f6fb;border:1px solid #e3e9f3;border-radius:6px;padding:0 .35rem}
.table{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.table th,.table td{padding:12px 14px;border-bottom:1px solid #eef3f8;text-align:left}
.table thead th{background:#f3f7fd;font-weight:600}
.cta{margin:32px 0;padding:22px;border-radius:14px;background:linear-gradient(180deg,#f3f7ff,#eef3ff);border:1px solid #dfe9ff}
.button{display:inline-block;padding:12px 16px;border-radius:10px;background:var(--brand);color:#fff;font-weight:600}
.site-footer{margin-top:40px;border-top:1px solid var(--line);background:#fff}
.footer-grid{display:grid;grid-template-columns:1fr auto;gap:20px;padding:20px}
.foot-links a{margin:0 10px;color:#415569}
.copy{text-align:center;color:#6b7a8b;border-top:1px solid var(--line);padding:10px 0;font-size:.9rem}
.breadcrumbs{font-size:.9rem;color:#6b7a8b;margin-bottom:8px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{background:#f1f5fb;border:1px solid var(--line);border-radius:999px;padding:6px 10px;font-size:.85rem}