:root{--bg:#05080d;--surface:#ffffff;--muted:#f3f5f7;--text:#0f172a;--text-light:#e5e7eb;--brand:#18a8ff;--brand-dark:#0b8fe0;--border:#dbe3ea;--max:1120px}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);line-height:1.6}
img{max-width:100%;height:auto}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--max);margin:0 auto;padding:0 1rem}
.skip-link{position:absolute;left:-9999px;top:auto}
.skip-link:focus{left:1rem;top:1rem;background:#fff;padding:.5rem .75rem;z-index:10}
.site-header{background:var(--bg);color:var(--text-light);position:sticky;top:0;z-index:9}
.header-inner{display:flex;justify-content:space-between;align-items:center;gap:1rem;min-height:72px}
.brand{display:inline-flex;align-items:center}
.brand img{display:block;height:68px;width:auto;filter:drop-shadow(0 0 6px rgba(24,168,255,.7)) drop-shadow(0 0 16px rgba(24,168,255,.35));transition:filter .2s ease}
.brand:hover img{filter:drop-shadow(0 0 8px rgba(24,168,255,.85)) drop-shadow(0 0 20px rgba(24,168,255,.45))}
.main-nav ul{list-style:none;display:flex;gap:1rem;padding:0;margin:0;flex-wrap:wrap}
.main-nav a{color:var(--text-light);font-weight:600}
.hero{background:var(--bg);color:#fff;padding:3.5rem 0 2.8rem;text-align:center}
.hero-logo{
  width:374px;
  height:auto;
  object-fit:contain;
  margin:0 auto .9rem;
  display:block;
  filter:
    drop-shadow(0 0 4px rgba(24,168,255,.95))
    drop-shadow(0 0 10px rgba(24,168,255,.75))
    drop-shadow(0 0 20px rgba(24,168,255,.45));
}
.hero h1{font-size:clamp(1.6rem,3.8vw,2.65rem);line-height:1.2;margin:.2rem 0 .6rem}
.hero p{max-width:760px;margin:0 auto 1.2rem;color:#d1d5db}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:.72rem 1.12rem;border-radius:.36rem;font-weight:700}
.btn:hover{background:var(--brand-dark);text-decoration:none}
.breadcrumbs{background:#fff;border-bottom:1px solid var(--border);font-size:.92rem}
.breadcrumbs ol{margin:0;padding:.75rem 0;list-style:none;display:flex;gap:.4rem;flex-wrap:wrap}
.breadcrumbs li::after{content:"/";padding-left:.4rem;color:#64748b}
.breadcrumbs li:last-child::after{content:""}
.section{padding:2.2rem 0}
.section.alt{background:var(--muted)}
.grid-2{display:grid;grid-template-columns:1.2fr 1fr;gap:2rem;align-items:start}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.card{background:#fff;border:1px solid var(--border);border-radius:.6rem;padding:1rem}
.cta-band{background:var(--bg);color:#fff;text-align:center;padding:2rem 0}
.cta-band p{margin:.2rem auto 1rem;color:#d1d5db;max-width:820px}
.article-wrap{max-width:860px;margin:0 auto}
.article-wrap h2{margin-top:2rem}
.article-wrap h3{margin-top:1.2rem}
.article-wrap ul{padding-left:1.2rem}
.faq details{background:#fff;border:1px solid var(--border);border-radius:.5rem;padding:.9rem;margin-bottom:.75rem}
.related ul{padding-left:1rem}
.site-footer{background:var(--bg);color:#cbd5e1;padding:1.5rem 0;margin-top:2rem}
.site-footer a{color:#fff}
.footer-links{display:flex;gap:1rem;flex-wrap:wrap}
@media (max-width:900px){
  .grid-2,.card-grid{grid-template-columns:1fr}
  .hero{padding-top:2.5rem}
  .brand img{height:56px}
}