:root{
  --bg:#02080d;
  --bg2:#06131b;
  --card:#071722;
  --card2:#0a1d29;
  --cyan:#03e7ef;
  --cyan2:#00aeba;
  --text:#f5fbff;
  --muted:#9fb4c0;
  --line:rgba(3,231,239,.23);
  --glow:rgba(3,231,239,.22);
  --gold:#e2b34f;
  --purple:#9976ff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(circle at 75% 15%, rgba(0,174,186,.16), transparent 30%),
    linear-gradient(180deg,#01070b 0%,#031019 55%,#02080d 100%);
  color:var(--text);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  line-height:1.5;
}
a{color:inherit;text-decoration:none}
.grid-bg{
  position:fixed;inset:0;pointer-events:none;z-index:-1;opacity:.17;
  background-image:
    linear-gradient(rgba(3,231,239,.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(3,231,239,.08) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:linear-gradient(to bottom,black,transparent 80%);
}
.site-header{
  width:min(1480px,calc(100% - 40px));
  margin:0 auto;
  height:86px;
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:30px;
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:20;
  background:rgba(2,8,13,.88);
  backdrop-filter:blur(14px);
}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:58px;height:58px;object-fit:contain;border-radius:50%}
.brand span{display:flex;flex-direction:column;line-height:.95;letter-spacing:.14em}
.brand strong{font-size:25px;color:var(--cyan)}
.brand small{font-size:12px;margin-top:6px;color:#d5fbff}
.main-nav{display:flex;justify-content:center;gap:28px;font-size:13px;text-transform:uppercase;letter-spacing:.05em}
.main-nav a{color:#c3d4dc;position:relative;padding:31px 0}
.main-nav a:hover,.main-nav .active{color:var(--cyan)}
.main-nav .active:after{content:"";position:absolute;height:2px;background:var(--cyan);left:0;right:0;bottom:20px;box-shadow:0 0 12px var(--cyan)}
.menu-toggle{display:none;background:none;border:0;color:var(--cyan);font-size:24px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:50px;padding:0 24px;border-radius:8px;
  text-transform:uppercase;font-size:13px;font-weight:800;letter-spacing:.03em;
  transition:.2s ease;border:1px solid transparent;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--cyan);color:#001216;box-shadow:0 0 25px rgba(3,231,239,.18)}
.btn-outline{border-color:var(--cyan);color:var(--cyan);background:rgba(3,231,239,.03)}
.hero{
  width:min(1480px,calc(100% - 40px));margin:0 auto;
  min-height:690px;display:grid;grid-template-columns:1.12fr .88fr;gap:40px;align-items:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero-copy{padding:74px 0 66px}
.eyebrow{font-size:12px;color:var(--cyan);letter-spacing:.26em;font-weight:800;margin:0 0 14px;text-transform:uppercase}
.hero h1{font-size:clamp(58px,7vw,110px);line-height:.85;margin:0 0 24px;letter-spacing:-.055em}
.hero h1 span{color:var(--cyan);text-shadow:0 0 22px rgba(3,231,239,.16)}
.hero h2{font-size:clamp(25px,2.3vw,38px);line-height:1.14;margin:0;max-width:800px}
.lead{font-size:18px;color:var(--muted);max-width:720px;margin:22px 0 30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.mini-features{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px;max-width:800px}
.mini-features div{display:flex;gap:12px;align-items:flex-start;border-top:1px solid var(--line);padding-top:15px}
.mini-features p{font-size:12px;color:var(--muted);margin:0}
.mini-features strong{color:#e7f7fa}
.icon{display:grid;place-items:center;width:31px;height:31px;flex:0 0 31px;border:1px solid var(--cyan);border-radius:50%;color:var(--cyan)}
.hero-visual{min-height:620px;position:relative;display:grid;place-items:center}
.hero-visual:before{
  content:"";position:absolute;width:590px;height:590px;border-radius:50%;
  background:radial-gradient(circle,rgba(3,231,239,.16) 0%,rgba(3,231,239,.03) 46%,transparent 68%);
}
.orbit{position:absolute;border:2px solid var(--line);border-radius:50%;box-shadow:0 0 35px rgba(3,231,239,.05)}
.orbit-1{width:490px;height:490px}
.orbit-2{width:390px;height:390px;border-style:dashed;animation:spin 26s linear infinite}
.orbit-3{width:300px;height:300px;border-width:5px;border-color:rgba(3,231,239,.55);animation:spinrev 18s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}@keyframes spinrev{to{transform:rotate(-360deg)}}
.hero-logo{width:230px;height:230px;z-index:2;display:grid;place-items:center}
.hero-logo img{width:100%;border-radius:50%;box-shadow:0 0 55px rgba(3,231,239,.16)}
.hud-card{position:absolute;z-index:3;padding:12px 16px;background:rgba(5,19,28,.83);border:1px solid var(--line);border-radius:8px;min-width:126px;box-shadow:0 0 20px rgba(3,231,239,.08)}
.hud-card small{display:block;color:var(--cyan);font-size:9px;letter-spacing:.18em}
.hud-card strong{font-size:14px}
.hud-a{top:21%;left:3%}.hud-b{right:0;top:43%}.hud-c{left:8%;bottom:18%}
.section{width:min(1480px,calc(100% - 40px));margin:0 auto;padding:80px 0;border-bottom:1px solid var(--line)}
.section-heading{display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:end;margin-bottom:34px}
.section-heading h3,.questions-cta h3,.about h3{font-size:clamp(34px,4vw,58px);line-height:1.05;margin:0;text-transform:uppercase;letter-spacing:-.03em}
.section-heading h3 span,.questions-cta h3 span,.about h3 span{color:var(--cyan)}
.section-heading>p,.questions-cta p,.about>p{color:var(--muted);max-width:660px;margin:0}
.area-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.area-card{
  min-height:240px;padding:28px;border:1px solid var(--line);border-radius:12px;position:relative;overflow:hidden;
  display:grid;grid-template-columns:62px 1fr;gap:18px;background:linear-gradient(145deg,rgba(7,23,34,.95),rgba(2,10,15,.95));
}
.area-card:after{content:"";position:absolute;inset:auto -30px -80px auto;width:180px;height:180px;border:1px solid currentColor;border-radius:50%;opacity:.12}
.area-card:hover{transform:translateY(-4px);transition:.2s ease}
.area-icon{width:58px;height:58px;display:grid;place-items:center;border:1px solid currentColor;border-radius:50%;font-size:28px;color:var(--cyan);box-shadow:0 0 18px currentColor}
.card-kicker{font-size:10px;color:var(--cyan);letter-spacing:.15em;font-weight:800;margin:0 0 7px}
.area-card h4{font-size:25px;margin:0 0 8px}
.area-card p:not(.card-kicker){font-size:13px;color:var(--muted)}
.area-card a{color:var(--cyan);font-size:12px;font-weight:800}
.history{border-color:rgba(226,179,79,.38)}.history .area-icon,.history .card-kicker,.history a{color:var(--gold)}
.enem{border-color:rgba(153,118,255,.38)}.enem .area-icon,.enem .card-kicker{color:var(--purple)}
.soon{display:inline-block;border:1px solid var(--purple);color:#d5c9ff;border-radius:999px;padding:5px 10px;font-size:10px;text-transform:uppercase}
.compact{grid-template-columns:1fr}
.resource-grid{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.resource-card{padding:26px;border-right:1px solid var(--line);min-height:180px;background:rgba(4,16,24,.55)}
.resource-card:last-child{border-right:0}
.resource-card span{display:grid;place-items:center;width:48px;height:48px;border:1px solid var(--cyan);border-radius:50%;color:var(--cyan);font-weight:900;margin-bottom:22px}
.resource-card h4{margin:0 0 8px;color:var(--cyan);text-transform:uppercase;font-size:14px}
.resource-card p{margin:0;color:var(--muted);font-size:12px}
.questions-cta{
  display:flex;justify-content:space-between;align-items:center;gap:40px;
  background:linear-gradient(90deg,rgba(3,231,239,.04),rgba(3,231,239,.11),rgba(3,231,239,.02));
  padding-left:40px;padding-right:40px;
}
.questions-cta p{margin-top:14px}
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.blog-grid article{padding:30px;border:1px solid var(--line);border-radius:12px;background:rgba(5,18,27,.65);min-height:220px}
.blog-grid span{color:var(--cyan);font-size:10px;letter-spacing:.15em;font-weight:800}
.blog-grid h4{font-size:23px;line-height:1.15;margin:16px 0}
.blog-grid p{color:var(--muted);font-size:13px}
.about{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:end}
footer{
  width:min(1480px,calc(100% - 40px));margin:0 auto;padding:32px 0 48px;
  display:grid;grid-template-columns:1fr auto auto;gap:38px;align-items:center;color:var(--muted);font-size:12px;
}
.footer-brand{display:flex;align-items:center;gap:12px}.footer-brand img{width:50px;border-radius:50%}.footer-brand div{display:flex;flex-direction:column}.footer-brand strong{color:var(--text);font-size:16px}.footer-brand small{font-size:11px}
.footer-links{display:flex;gap:22px}.footer-links a:hover{color:var(--cyan)}
@media (max-width:1100px){
  .main-nav{display:none}.menu-toggle{display:block;justify-self:end}.header-cta{display:none}
  .site-header{grid-template-columns:auto 1fr}
  .main-nav.open{position:absolute;display:flex;flex-direction:column;gap:0;top:85px;left:0;right:0;background:#031019;border:1px solid var(--line);padding:12px 20px}
  .main-nav.open a{padding:12px}
  .hero{grid-template-columns:1fr}.hero-visual{min-height:480px}.mini-features{grid-template-columns:1fr}
  .section-heading,.about{grid-template-columns:1fr;gap:18px}.area-grid{grid-template-columns:1fr 1fr}.resource-grid{grid-template-columns:1fr 1fr}.resource-card{border-bottom:1px solid var(--line)}
  .questions-cta{flex-direction:column;align-items:flex-start}.blog-grid{grid-template-columns:1fr}
}
@media (max-width:680px){
  .site-header,.hero,.section,footer{width:min(100% - 24px,1480px)}
  .hero{min-height:auto}.hero-copy{padding-top:55px}.hero h1{font-size:56px}.hero h2{font-size:25px}.hero-visual{min-height:390px}
  .orbit-1{width:330px;height:330px}.orbit-2{width:270px;height:270px}.orbit-3{width:210px;height:210px}.hero-logo{width:160px;height:160px}
  .hud-card{display:none}.area-grid,.resource-grid{grid-template-columns:1fr}.area-card{grid-template-columns:54px 1fr}.resource-card{border-right:0}
  .section{padding:58px 0}.questions-cta{padding-left:22px;padding-right:22px}
  footer{grid-template-columns:1fr;gap:22px}.footer-links{flex-wrap:wrap}
}