*{margin:0;padding:0;box-sizing:border-box}
:root{--sia-dark:#0a0e27;--sia-blue:#0f1a3d;--sia-cyan:#00d4ff;--sia-light:#e0f7ff;--sia-gradient:linear-gradient(135deg,#00d4ff,#0077ff,#00d4ff)}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:var(--sia-dark);color:#fff;line-height:1.6;overflow-x:hidden;
background-image:radial-gradient(circle at 15% 10%,rgba(0,212,255,.10),transparent 40%),radial-gradient(circle at 85% 60%,rgba(0,119,255,.10),transparent 45%);background-attachment:fixed}
a{color:var(--sia-cyan)}
.navbar{position:sticky;top:0;z-index:100;padding:10px 40px;display:flex;align-items:center;justify-content:space-between;gap:20px;background:rgba(10,14,39,.92);backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,212,255,.15)}
.nav-logo img{height:58px;width:auto;display:block}
.nav-right{display:flex;align-items:center;gap:26px}
.nav-links{display:flex;gap:22px;list-style:none;flex-wrap:wrap}
.nav-links a{color:var(--sia-light);text-decoration:none;font-size:.93rem}
.nav-links a:hover,.nav-links a.current{color:var(--sia-cyan)}
.lang-switcher{display:flex;gap:8px}
.lang-btn{background:rgba(255,255,255,.06);border:1px solid rgba(0,212,255,.25);color:rgba(255,255,255,.65);font-size:.75rem;font-weight:700;padding:6px 12px;border-radius:50px;cursor:pointer}
.lang-btn.active{background:var(--sia-gradient);color:#fff;border-color:transparent;box-shadow:0 2px 12px rgba(0,212,255,.4)}
.menu-toggle{display:none;background:none;border:1px solid rgba(0,212,255,.3);color:#fff;border-radius:8px;padding:6px 10px;font-size:1.1rem;cursor:pointer}
header.page-hero{text-align:center;padding:90px 20px 40px;max-width:900px;margin:0 auto}
.page-hero h1{font-size:clamp(2rem,5vw,3.4rem);font-weight:800;line-height:1.15;margin-bottom:18px;background:linear-gradient(135deg,#fff,#00d4ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.page-hero p{font-size:1.15rem;color:rgba(255,255,255,.75)}
section{padding:50px 20px;max-width:1200px;margin:0 auto}
.section-title{font-size:clamp(1.6rem,3vw,2.3rem);text-align:center;margin-bottom:40px;background:linear-gradient(135deg,#fff,#00d4ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:26px}
.card{background:rgba(255,255,255,.04);border:1px solid rgba(0,212,255,.12);border-radius:20px;padding:32px;transition:transform .3s,box-shadow .3s,border-color .3s}
.card:hover{transform:translateY(-6px);box-shadow:0 20px 50px rgba(0,212,255,.15);border-color:rgba(0,212,255,.3)}
.card-icon{font-size:2.3rem;margin-bottom:12px}
.card h3{font-size:1.25rem;margin-bottom:10px;color:var(--sia-cyan)}
.card p{color:rgba(255,255,255,.72);font-size:.96rem}
.feature-list{list-style:none;margin-top:18px}
.feature-list li{padding:9px 0 9px 26px;position:relative;color:rgba(255,255,255,.78);font-size:.94rem;border-top:1px solid rgba(0,212,255,.08)}
.feature-list li:first-child{border-top:none}
.feature-list li::before{content:'✓';position:absolute;left:0;color:var(--sia-cyan);font-weight:700}
.prose{max-width:780px;margin:0 auto}
.prose p{font-size:1.08rem;color:rgba(255,255,255,.82);margin-bottom:20px}
.faq{max-width:820px;margin:0 auto}
.faq details{background:rgba(255,255,255,.04);border:1px solid rgba(0,212,255,.14);border-radius:16px;margin-bottom:14px;padding:4px 24px}
.faq summary{cursor:pointer;font-weight:600;font-size:1.06rem;padding:16px 0;list-style:none;color:#fff;position:relative;padding-right:30px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';position:absolute;right:0;top:12px;color:var(--sia-cyan);font-size:1.4rem}
.faq details[open] summary::after{content:'–'}
.faq details p{color:rgba(255,255,255,.75);padding:0 0 18px}
.cta{text-align:center;background:linear-gradient(135deg,rgba(0,212,255,.10),rgba(0,119,255,.10));border:1px solid rgba(0,212,255,.25);border-radius:24px;padding:50px 30px;max-width:900px;margin:30px auto 70px}
.cta h2{font-size:clamp(1.5rem,3vw,2.2rem);margin-bottom:12px}
.cta p{color:rgba(255,255,255,.75);margin-bottom:26px}
.btn-primary{display:inline-block;padding:14px 36px;background:var(--sia-gradient);color:#fff;border-radius:50px;text-decoration:none;font-weight:600;box-shadow:0 4px 25px rgba(0,212,255,.35)}
footer{text-align:center;padding:30px 20px 26px;border-top:1px solid rgba(0,212,255,.12);background:rgba(5,8,25,.6)}
footer img{height:40px;margin-bottom:14px;filter:drop-shadow(0 0 15px rgba(0,212,255,.4))}
.footer-brand{color:var(--sia-cyan);font-weight:700}
.footer-small{color:rgba(255,255,255,.5);font-size:.9rem;margin:4px 0 16px}
.footer-links{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-bottom:14px}
.footer-links a{color:rgba(255,255,255,.7);text-decoration:none;font-size:.9rem}
.footer-links a:hover{color:var(--sia-cyan)}
.footer-contact{font-size:.88rem;color:rgba(255,255,255,.45)}
.footer-contact a{text-decoration:none}
@media(max-width:900px){
 .navbar{padding:10px 18px;flex-wrap:wrap}
 .nav-logo img{height:46px}
 .menu-toggle{display:block}
 .nav-right{width:100%;flex-direction:column;align-items:flex-start;gap:14px;display:none;padding:10px 0}
 .navbar.open .nav-right{display:flex}
 .nav-links{flex-direction:column;gap:12px}
 header.page-hero{padding-top:50px}
 .card{padding:24px}
}