:root{
    --bg:#07111f;
    --surface:#0d1b2a;
    --surface-2:#12263a;
    --border:#28435e;
    --text:#ffffff;
    --muted:#b9c9d9;
    --accent:#62d5ff;
    --accent-2:#70f0b2;
    --shadow:0 18px 50px rgba(0,0,0,.28);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    font-family:Arial,Helvetica,sans-serif;
    background:var(--bg);
    color:var(--text);
    line-height:1.6;
}
a{color:inherit;text-decoration:none}
.container{width:min(1180px,calc(100% - 32px));margin:auto}
.site-header{
    position:sticky;top:0;z-index:1000;
    background:rgba(7,17,31,.94);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--border);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:76px;gap:22px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
    display:grid;place-items:center;
    width:44px;height:44px;border-radius:12px;
    background:linear-gradient(135deg,var(--accent),#247ba0);
    color:#06101c;font-weight:800
}
.brand strong,.brand small{display:block}
.brand small{font-size:12px;color:var(--muted)}
.main-nav{display:flex;gap:20px;align-items:center}
.main-nav a{color:var(--muted);font-weight:700;font-size:14px}
.main-nav a:hover,.main-nav a.active{color:var(--accent)}
.menu-toggle{display:none;background:none;border:1px solid var(--border);color:#fff;border-radius:8px;padding:8px 11px}
.hero{
    padding:92px 0 72px;
    background:
      radial-gradient(circle at top right,rgba(98,213,255,.13),transparent 34%),
      radial-gradient(circle at left,rgba(112,240,178,.07),transparent 30%);
}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.eyebrow{color:var(--accent);font-weight:800;text-transform:uppercase;letter-spacing:1.5px;font-size:13px}
h1{font-size:clamp(42px,6vw,74px);line-height:1.04;margin:14px 0 20px}
h2{font-size:clamp(28px,4vw,44px);line-height:1.15}
.lead{color:var(--muted);font-size:19px;max-width:760px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn{
    display:inline-flex;align-items:center;justify-content:center;
    min-height:46px;padding:0 20px;border-radius:10px;
    border:1px solid var(--border);font-weight:800
}
.btn-primary{background:#0e7490;border-color:#22b8d6}
.btn-secondary{background:var(--surface)}
.hero-card,.card{
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:18px;
    box-shadow:var(--shadow)
}
.hero-card{padding:28px}
.hero-card code{display:block;background:#050c15;padding:18px;border-radius:12px;color:#dfffee;overflow:auto}
.section{padding:72px 0}
.section-head{max-width:760px;margin-bottom:30px}
.section-head p{color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{padding:24px}
.card h3{margin-top:0}
.card p{color:var(--muted)}
.card-link{color:var(--accent);font-weight:800}
.band{background:var(--surface-2);border-block:1px solid var(--border)}
.page-hero{padding:70px 0 45px}
.content{padding:20px 0 70px}
.notice{padding:18px;border:1px solid var(--border);background:var(--surface);border-radius:12px;color:var(--muted)}
.site-footer{border-top:1px solid var(--border);background:#050c15;padding-top:48px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.5fr;gap:30px}
.footer-grid p,.footer-grid a{display:block;color:var(--muted);margin:7px 0}
.copyright{text-align:center;color:#8198ad;padding:24px 16px;margin-top:30px;border-top:1px solid #14283a}
@media(max-width:900px){
    .hero-grid,.grid,.footer-grid{grid-template-columns:1fr}
    .menu-toggle{display:block}
    .main-nav{
        display:none;position:absolute;left:16px;right:16px;top:76px;
        flex-direction:column;align-items:stretch;
        padding:18px;background:var(--surface);
        border:1px solid var(--border);border-radius:12px
    }
    .main-nav.open{display:flex}
}