:root{
  --ink:#0f172a;
  --muted:#334155;
  --bg:#ecf5ff;
  --paper:#ffffff;
  --line:#bfdbfe;
  --line-soft:#dbeafe;
  --blue:#1d4ed8;
  --blue-deep:#1e3a8a;
  --cyan:#0ea5e9;
  --sky:#f4faff;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Avenir Next",Avenir,Segoe UI,Arial,sans-serif;background:radial-gradient(circle at 84% 10%,#dff1ff,transparent 34%),radial-gradient(circle at 6% 84%,#dbeafe,transparent 30%),linear-gradient(160deg,#eff7ff 0%,#ecf5ff 55%,#f8fbff 100%);color:var(--ink);line-height:1.6}
a{text-decoration:none;color:inherit}
header{background:rgba(255,255,255,.93);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.nav{max-width:1160px;margin:0 auto;padding:12px 20px;display:flex;justify-content:space-between;align-items:center;gap:12px}
.brand{font-weight:800;color:var(--blue-deep);letter-spacing:.01em;display:inline-flex;align-items:center;gap:10px}
.brand-icon{width:36px;height:36px}
.links{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.links a{padding:8px 11px;border-radius:999px;font-weight:700;color:#0f172a}
.links a.active,.links a:hover{background:#e6f2ff;color:#1e3a8a}
.demo-menu-toggle{display:none;align-items:center;justify-content:center;gap:5px;flex-direction:column;width:44px;height:44px;border-radius:10px;border:1px solid #bfdbfe;background:#fff;cursor:pointer;padding:0}
.demo-menu-toggle span{display:block;width:22px;height:2px;background:#1e40af;border-radius:2px;transition:transform .25s ease,opacity .2s ease}
.nav.nav-open .demo-menu-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.nav-open .demo-menu-toggle span:nth-child(2){opacity:0}
.nav.nav-open .demo-menu-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.back-yts{background:linear-gradient(135deg,#0f172a,#1e293b) !important;color:#e2e8f0 !important;border:1px solid #334155;box-shadow:0 8px 18px rgba(15,23,42,.22);transition:transform .2s ease,box-shadow .2s ease,filter .2s ease}
.back-yts:hover,.back-yts:focus-visible{transform:translateY(-1px);box-shadow:0 10px 20px rgba(15,23,42,.24);filter:brightness(1.03)}
.call-now{background:linear-gradient(135deg,var(--blue),#2563eb) !important;color:#fff !important;border:1px solid #1e40af !important;box-shadow:0 3px 10px rgba(29,78,216,.2);transition:transform .18s ease,box-shadow .18s ease}
.call-now:hover,.call-now:focus-visible{transform:translateY(-1px);box-shadow:0 7px 14px rgba(29,78,216,.26)}
.hero{position:relative;min-height:clamp(440px,68vh,720px);display:flex;align-items:flex-end;overflow:hidden;background:linear-gradient(180deg,#1e3a8a,#0f172a)}
.hero::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(15,23,42,.16),rgba(15,23,42,.74) 70%,rgba(15,23,42,.92)),radial-gradient(circle at 18% 18%,rgba(125,211,252,.18),transparent 28%),radial-gradient(circle at 78% 24%,rgba(59,130,246,.24),transparent 30%)}
.hero-overlay{position:relative;z-index:2;width:100%;max-width:1160px;margin:0 auto;padding:clamp(88px,11vw,150px) 20px 42px}
.hero-copy{max-width:720px}
.hero-copy::after{display:none}
.hero-copy h1{font-size:clamp(2.3rem,5vw,4rem);line-height:1.03;margin:0 0 12px;color:#f8fafc;max-width:14ch;text-shadow:0 14px 34px rgba(2,6,23,.34)}
.hero-copy p{margin:0;color:#dbeafe;max-width:62ch;font-size:1.02rem}
.hero-media{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero-video{width:100%;height:100%;object-fit:cover;display:block}
.hero .badge{background:rgba(219,234,254,.12);border:1px solid rgba(191,219,254,.42);color:#dbeafe;margin-bottom:14px}
.btns{margin-top:16px;display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-block;padding:11px 16px;border-radius:999px;font-weight:800}
.btn-main{background:linear-gradient(135deg,var(--blue),#2563eb);color:#fff}
.hero .btn-alt{background:rgba(255,255,255,.1);border:1px solid rgba(191,219,254,.52);color:#eff6ff}
.container{max-width:1160px;margin:0 auto;padding:54px 20px}
.grid{display:grid;gap:16px}
.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:19px;box-shadow:0 12px 26px rgba(29,78,216,.08);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.card:hover{transform:translateY(-2px);border-color:#93c5fd;box-shadow:0 16px 28px rgba(29,78,216,.12)}
.card h3{margin:0 0 8px;color:#1e3a8a}
.card p{margin:0;color:var(--muted)}
.price{font-size:2rem;font-weight:800;line-height:1;color:#1d6fc4;margin-bottom:8px}
.badge{display:inline-block;padding:5px 10px;border-radius:999px;background:#dbeafe;color:#1e3a8a;font-size:.74rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;margin-bottom:10px}
.checklist{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.checklist li{padding:8px 10px;background:#f3f8ff;border:1px solid var(--line-soft);border-radius:9px}
.panel{background:linear-gradient(160deg,#1d4ed8,#1e40af);color:#eff6ff;border-radius:20px;padding:24px;box-shadow:0 16px 34px rgba(30,64,175,.25)}
.panel p{color:#dbeafe}
.photo{width:100%;height:220px;object-fit:cover;border-radius:12px;border:1px solid var(--line);margin-bottom:10px;box-shadow:0 10px 20px rgba(29,78,216,.12)}
footer{padding:24px 20px;border-top:1px solid var(--line);color:#1e40af;text-align:center}
.scroll-top-button{position:fixed;left:28px;bottom:28px;display:inline-flex;align-items:center;gap:10px;padding:13px 18px;border:1px solid rgba(148,163,184,.3);border-radius:999px;background:rgba(15,23,42,.84);backdrop-filter:blur(16px);color:#f8fafc;box-shadow:0 18px 40px rgba(15,23,42,.28);font-weight:700;letter-spacing:.02em;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(18px) scale(.96);transition:opacity .25s ease,transform .25s ease,box-shadow .25s ease,background-color .25s ease,visibility .25s ease;z-index:1200}
.scroll-top-button.is-visible{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.scroll-top-button:hover,.scroll-top-button:focus-visible{background:rgba(29,78,216,.92);box-shadow:0 20px 42px rgba(37,99,235,.3);transform:translateY(-2px) scale(1.01)}
.scroll-top-icon{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,.14)}
.scroll-top-icon svg{width:16px;height:16px;fill:currentColor}
@media (max-width:940px){.cols-3,.cols-2{grid-template-columns:1fr}.hero{min-height:400px}.hero-overlay{padding:108px 16px 34px}.nav{display:grid;grid-template-columns:1fr auto;align-items:center}.demo-menu-toggle{display:inline-flex}.nav .demo-nav-links{display:none;grid-column:1 / -1;flex-direction:column;align-items:stretch;padding-top:10px}.nav.nav-open .demo-nav-links{display:flex}.nav .demo-nav-links a{width:100%;text-align:left}}
@media (max-width:640px){.nav{padding:10px 14px}.links a{padding:7px 10px;font-size:.9rem}.hero{min-height:360px}.hero-overlay{padding:88px 14px 28px}.hero-copy h1{font-size:clamp(1.9rem,8.3vw,2.8rem)}.hero-copy p{font-size:.95rem}.btn{padding:10px 13px;font-size:.9rem}.container{padding:38px 14px}.card{padding:15px;border-radius:14px}.price{font-size:1.72rem}.photo{height:180px}}
@media (max-width:640px){.scroll-top-button{left:16px;bottom:16px;padding:12px 15px;gap:8px}}