.topbar{
  max-width:1180px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:10px 12px;border:1px solid rgba(180,205,235,.12);border-radius:18px;background:rgba(7,18,37,.48);backdrop-filter:blur(18px);
}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;font-weight:950;letter-spacing:.01em}
.mark{width:40px;height:40px;display:grid;place-items:center;border-radius:13px;color:#031525;background:linear-gradient(135deg,var(--cyan),var(--green));box-shadow:0 0 28px rgba(139,233,255,.28)}
.nav-actions{display:flex;align-items:center;gap:9px}
.nav-actions a{text-decoration:none;font-size:14px;font-weight:850;padding:10px 14px;border-radius:11px;border:1px solid rgba(255,255,255,.1);color:#eaf4ff;background:rgba(255,255,255,.03)}
.nav-actions a:hover{border-color:rgba(139,233,255,.38)}
.primary-link{color:#031525!important;background:linear-gradient(135deg,var(--cyan),var(--green))!important}
.hero{width:min(990px,100%);margin:52px auto 0;text-align:center}
.eyebrow{margin:0 0 14px;color:var(--green);font-size:12px;font-weight:950;text-transform:uppercase;letter-spacing:.19em}
h1{
  max-width:880px;min-height:112px;margin:0 auto;
  font-size:clamp(36px,5.6vw,66px);line-height:1.04;letter-spacing:0;font-weight:950;
  text-wrap:balance;text-shadow:0 0 40px rgba(139,233,255,.14);
}
.cursor{color:var(--cyan);animation:blink 1.05s steps(2,end) infinite}
.lead{max-width:760px;margin:20px auto 25px;color:#dce9f8;font-size:19px;line-height:1.72;text-wrap:balance}
.science-grid{max-width:890px;margin:0 auto 28px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.science-grid div{
  padding:17px 16px;border:1px solid var(--line);border-radius:18px;
  background:linear-gradient(180deg,rgba(13,29,57,.74),rgba(7,18,37,.62));
  box-shadow:0 18px 50px rgba(0,0,0,.2);text-align:left;
}
.science-grid strong{display:block;color:var(--gold);font-size:14px;margin-bottom:7px}
.science-grid span{display:block;color:var(--muted);font-size:13px;line-height:1.5}
@keyframes blink{50%{opacity:0}}
@media(max-width:760px){
  .shell{padding:16px}.topbar{border-radius:15px}.science-grid{grid-template-columns:1fr}
  .hero{margin-top:38px}h1{min-height:106px}.nav-actions a{padding:8px 10px}
}