:root{--navy:#041124;--navy2:#0a2b5d;--blue:#2468ff;--green:#0b6b3a;--ink:#102248;--muted:#65728a;--line:#dbe5f4;--soft:#f4f7fc;--white:#fff;--shadow:0 20px 55px rgba(6,22,46,.13)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;color:var(--ink);background:var(--soft)}a{text-decoration:none;color:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}header{position:sticky;top:0;z-index:50;background:#041124;color:#fff;border-bottom:1px solid rgba(255,255,255,.08)}.nav{height:74px;display:flex;align-items:center;gap:22px}.brand{font-weight:850;display:flex;align-items:center;gap:12px}.mark{width:40px;height:40px;border-radius:50%;background:#fff;color:#041124;display:grid;place-items:center}.brand small{display:block;color:#aebbd0;font-size:10px;font-weight:500}.links{display:flex;gap:22px;margin-left:auto;font-size:13px;color:#cbd7ea}.links a:hover,.links .active{color:#fff}.nav-cta{padding:11px 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/* Learning Hub reliability fixes */
.series-card > a { display: block; }
.series-cover { background-color: #0b2145; background-repeat: no-repeat; }
.series-card.agent .series-cover { background-color: #101a67; }
@media (max-width: 1050px) and (min-width: 701px) {
  .series-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .series-card:last-child { grid-column: 1 / -1; max-width: 570px; width: 100%; justify-self: center; }
}
@media (max-width: 700px) {
  .series-grid { grid-template-columns: 1fr; }
  .series-card:last-child { grid-column: auto; max-width: none; }
  .nav { height: auto; min-height: 74px; padding: 12px 0; }
  .nav-cta { margin-left: auto; white-space: nowrap; }
  .brand small { display: none; }
}
@media (max-width: 420px) {
  .brand span:last-child strong { font-size: 12px; }
  .mark { width: 36px; height: 36px; }
  .nav-cta { padding: 10px 12px; }
}