:root{
  --bg:#080a10;
  --bg-card:#121620;
  --bg-surf:#1a1f2e;
  --bg-surf2:#242b3d;
  --accent:#0090ff;
  --accent2:#33a6ff;
  --accent-red:#ff4d4d;
  --neon:#00d4ff;
  --success:#00e676;
  --text:#ffffff;
  --text2:#8a96ab;
  --border:rgba(255,255,255,0.08);
  --shadow:0 8px 24px rgba(0,0,0,0.5);
  --radius:14px;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Inter','Segoe UI',Roboto,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent2);text-decoration:none;transition:color .2s}
a:hover{color:var(--neon)}
h1,h2,h3,h4{font-weight:700;line-height:1.25;letter-spacing:-0.01em;color:#fff}
h1{font-size:clamp(1.9rem,4.2vw,3rem);margin-bottom:1rem}
h2{font-size:clamp(1.45rem,2.8vw,2rem);margin:2.5rem 0 1rem;color:var(--accent2)}
h3{font-size:clamp(1.15rem,2vw,1.4rem);margin:1.5rem 0 .75rem;color:#dfeaff}
p{margin-bottom:1rem;color:#d6dde8}
ul,ol{margin:1rem 0 1.25rem 1.4rem;color:#d6dde8}
li{margin-bottom:.55rem}
strong{color:#fff}
code{background:var(--bg-surf2);padding:.15rem .45rem;border-radius:4px;font-size:.92em;color:var(--neon)}

/* HEADER */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(10,12,18,0.85);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.nav-wrap{
  max-width:var(--maxw);margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:.8rem 1.25rem;gap:1rem;
}
.logo-link{display:flex;align-items:center;flex-shrink:0}
.logo-img{height:40px;width:auto;display:block}
.nav-toggle{
  display:none;background:none;border:0;cursor:pointer;
  padding:.4rem;color:#fff;
}
.nav-toggle span{
  display:block;width:24px;height:2px;background:#fff;margin:5px 0;
  transition:transform .25s,opacity .25s;
}
.main-nav ul{
  display:flex;list-style:none;margin:0;gap:.25rem;align-items:center;
}
.main-nav li{margin:0}
.main-nav a{
  color:#cfd6e4;font-weight:500;font-size:.93rem;
  padding:.55rem .85rem;border-radius:8px;display:block;
  transition:background .2s,color .2s;
}
.main-nav a:hover,.main-nav a.active{
  color:#fff;background:var(--bg-surf2);
}
.cta-header{
  margin-left:.5rem;background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff !important;padding:.6rem 1.1rem !important;
  border-radius:10px;font-weight:600;
  box-shadow:0 4px 14px rgba(0,144,255,.35);
}
.cta-header:hover{
  background:linear-gradient(135deg,var(--accent2),var(--neon));
  color:#fff !important;
}

/* HERO */
.hero{
  position:relative;
  padding:3.5rem 1.25rem 2.5rem;
  background:
    radial-gradient(circle at 15% 20%,rgba(0,144,255,.18),transparent 55%),
    radial-gradient(circle at 85% 80%,rgba(0,212,255,.12),transparent 55%),
    var(--bg);
  overflow:hidden;
}
.hero-inner{
  max-width:var(--maxw);margin:0 auto;
  display:grid;grid-template-columns:1.1fr .9fr;gap:2.5rem;align-items:center;
}
.hero h1 span{
  background:linear-gradient(90deg,var(--accent),var(--neon));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero-lead{font-size:1.08rem;color:#d6dde8;max-width:560px}
.hero-cta{
  display:flex;flex-wrap:wrap;gap:.85rem;margin-top:1.5rem;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.9rem 1.6rem;border-radius:12px;
  font-weight:700;font-size:1rem;cursor:pointer;
  transition:transform .15s,box-shadow .2s,background .2s;
  border:0;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#fff;
  box-shadow:0 6px 22px rgba(0,144,255,.4);
}
.btn-primary:hover{
  transform:translateY(-2px);color:#fff;
  background:linear-gradient(135deg,var(--accent2),var(--neon));
  box-shadow:0 10px 28px rgba(0,212,255,.5);
}
.btn-ghost{
  background:transparent;border:1px solid var(--border);color:#fff;
}
.btn-ghost:hover{background:var(--bg-surf2);color:#fff}
.hero-img{
  border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--border);box-shadow:var(--shadow);
}
.hero-img img{width:100%;height:auto;display:block}

/* BREADCRUMBS */
.breadcrumb{
  max-width:var(--maxw);margin:1.25rem auto 0;padding:0 1.25rem;
  font-size:.88rem;color:var(--text2);
}
.breadcrumb a{color:var(--text2)}
.breadcrumb a:hover{color:var(--accent2)}
.breadcrumb span.sep{margin:0 .4rem;opacity:.6}

/* CONTAINER & CARDS */
.container{max-width:var(--maxw);margin:0 auto;padding:2rem 1.25rem}
.card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.75rem;margin-bottom:1.5rem;
  box-shadow:var(--shadow);
}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}

/* FEATURE CARDS */
.features{margin-top:2rem}
.feature{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:1.5rem;
  transition:transform .2s,border-color .2s;
}
.feature:hover{transform:translateY(-3px);border-color:var(--accent)}
.feature .icon{
  width:44px;height:44px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),var(--neon));
  display:flex;align-items:center;justify-content:center;
  font-size:1.4rem;margin-bottom:.85rem;color:#fff;font-weight:700;
}
.feature h3{margin-top:0;color:#fff}
.feature p{font-size:.96rem;color:#cfd6e4}

/* TABLES */
.table-wrap{overflow-x:auto;margin:1.25rem 0;border-radius:var(--radius);border:1px solid var(--border)}
table{
  width:100%;border-collapse:collapse;background:var(--bg-card);
  font-size:.95rem;
}
th,td{padding:.85rem 1rem;text-align:left;border-bottom:1px solid var(--border)}
th{
  background:var(--bg-surf);color:var(--accent2);
  font-weight:600;text-transform:uppercase;font-size:.8rem;letter-spacing:.05em;
}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:var(--bg-surf)}

/* CALLOUTS */
.callout{
  border-left:3px solid var(--accent);
  background:var(--bg-surf);padding:1.1rem 1.25rem;
  border-radius:0 var(--radius) var(--radius) 0;
  margin:1.5rem 0;
}
.callout-warn{border-left-color:var(--accent-red)}
.callout-ok{border-left-color:var(--success)}
.callout strong{color:var(--accent2)}

/* FAQ */
.faq{margin-top:2.5rem}
.faq details{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);margin-bottom:.85rem;
  overflow:hidden;
}
.faq summary{
  cursor:pointer;padding:1.1rem 1.25rem;font-weight:600;color:#fff;
  list-style:none;display:flex;justify-content:space-between;align-items:center;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";color:var(--accent2);font-size:1.4rem;font-weight:400;
  transition:transform .2s;
}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details[open] summary{border-bottom:1px solid var(--border)}
.faq .faq-body{padding:1rem 1.25rem 1.25rem;color:#cfd6e4}

/* FINAL CTA */
.final-cta{
  margin:3rem 0 1rem;
  background:linear-gradient(135deg,rgba(0,144,255,.15),rgba(0,212,255,.08));
  border:1px solid rgba(0,144,255,.3);
  border-radius:var(--radius);
  padding:2.5rem 1.5rem;text-align:center;
}
.final-cta h2{margin-top:0;color:#fff}
.final-cta p{max-width:640px;margin:0 auto 1.25rem;color:#dbe3ee}

/* FOOTER */
.site-footer{
  background:var(--bg-surf);border-top:1px solid var(--border);
  padding:2.5rem 1.25rem 1.25rem;margin-top:3rem;
  color:var(--text2);font-size:.92rem;
}
.footer-grid{
  max-width:var(--maxw);margin:0 auto;
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2rem;
}
.footer-grid h4{
  color:#fff;font-size:.95rem;margin-bottom:.85rem;
  text-transform:uppercase;letter-spacing:.05em;
}
.footer-grid ul{list-style:none;margin:0;padding:0}
.footer-grid li{margin-bottom:.45rem}
.footer-grid a{color:var(--text2)}
.footer-grid a:hover{color:var(--accent2)}
.footer-about p{color:var(--text2);font-size:.9rem;line-height:1.6}
.age-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border:2px solid var(--accent-red);
  border-radius:50%;color:var(--accent-red);font-weight:700;
  margin-top:.85rem;
}
.footer-bottom{
  max-width:var(--maxw);margin:1.75rem auto 0;padding-top:1.25rem;
  border-top:1px solid var(--border);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:.5rem;
  font-size:.85rem;
}

/* MOBILE */
@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:1.5rem}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:1.5rem}
  .nav-toggle{display:block;order:2}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:var(--bg-surf);border-top:1px solid var(--border);
    padding:.75rem 1.25rem;
  }
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:0}
  .main-nav a{padding:.8rem 1rem}
  .cta-header{margin:.5rem 0 0;text-align:center}
}
@media (max-width:560px){
  h1{font-size:1.85rem}
  h2{font-size:1.4rem}
  .hero{padding:2rem 1rem 1.5rem}
  .container{padding:1.25rem 1rem}
  .card{padding:1.25rem}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}