*{margin:0;padding:0;box-sizing:border-box}
body{font-family:Arial,sans-serif;color:#1d1d1d;line-height:1.6;background:#fff}
.container{max-width:1200px;margin:auto;padding:0 24px}
header{position:sticky;top:0;background:#0b0f14;color:#fff;z-index:10}
nav{display:flex;justify-content:space-between;align-items:center;padding:18px 0}
.logo{font-size:30px;font-weight:700}
nav ul{display:flex;gap:28px;list-style:none}
nav a{color:#fff;text-decoration:none}
.hero{background:linear-gradient(135deg,#0b0f14,#1b2430);color:#fff;padding:90px 0}
.hero-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:50px}
h1{font-size:56px;line-height:1.05;margin-bottom:24px}
.lead{font-size:22px;color:#d0d5db;margin-bottom:30px}
.cta{display:flex;gap:16px;flex-wrap:wrap}
.btn{padding:16px 24px;border-radius:8px;text-decoration:none;font-weight:bold}
.btn-red{background:#d72626;color:#fff}
.btn-dark{border:1px solid #fff;color:#fff}
.hero-card{background:rgba(255,255,255,.06);padding:28px;border-radius:14px}
section{padding:90px 0}
h2{font-size:42px;margin-bottom:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{padding:28px;border:1px solid #e5e5e5;border-radius:14px}
.dark{background:#10151c;color:#fff}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{padding:24px;border-left:4px solid #d72626;background:#fff;color:#111}
.contacts{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-box{padding:32px;background:#111822;color:#fff;border-radius:14px}
a.phone,a.social{color:#fff;text-decoration:none;display:block;margin:14px 0}
footer{background:#0b0f14;color:#fff;padding:40px 0}
@media(max-width:900px){
.hero-grid,.contacts,.grid-3,.timeline{grid-template-columns:1fr}
h1{font-size:40px}
h2{font-size:32px}
}

/* SITRAK responsive header */
.site-header{position:sticky;top:0;width:100%;background:rgba(11,15,20,.97);color:#fff;z-index:1000}
.header-container{width:min(1400px,calc(100% - 48px));min-height:86px;margin:0 auto;display:flex;align-items:center;gap:28px}
.sitrak-logo{display:flex;align-items:center;flex:0 1 auto;min-width:0;line-height:0;text-decoration:none}
.sitrak-logo img{display:block;width:auto;height:auto;max-width:360px;max-height:72px;object-fit:contain}
.main-navigation{display:flex;align-items:center;justify-content:center;gap:30px;margin-left:auto}
.main-navigation a{color:#fff;text-decoration:none;font:600 16px Arial,sans-serif;white-space:nowrap;transition:opacity .2s}
.main-navigation a:hover,.main-navigation a:focus-visible{opacity:.7}
.header-phone{display:inline-flex;align-items:center;justify-content:center;min-width:128px;height:46px;padding:0 20px;border-radius:8px;background:#d72626;color:#fff;text-decoration:none;font:700 15px Arial,sans-serif;white-space:nowrap;transition:background .2s,transform .2s}
.header-phone:hover,.header-phone:focus-visible{background:#b91f1f;transform:translateY(-1px)}
.mobile-menu-button{display:none;flex:0 0 auto;width:44px;height:44px;padding:7px;border:0;border-radius:6px;background:transparent;cursor:pointer}
.mobile-menu-button span{display:block;width:100%;height:3px;margin:5px 0;border-radius:2px;background:#fff;transition:transform .2s,opacity .2s}
.mobile-menu-button.is-open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.mobile-menu-button.is-open span:nth-child(2){opacity:0}
.mobile-menu-button.is-open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

@media(max-width:1100px){
.header-container{width:min(100% - 36px,1000px);min-height:78px;gap:18px}
.sitrak-logo img{max-width:290px;max-height:62px}
.main-navigation{gap:18px}
.main-navigation a{font-size:14px}
.header-phone{min-width:112px;height:42px;padding:0 15px;font-size:14px}
}

@media(max-width:768px){
.header-container{width:calc(100% - 24px);min-height:68px;gap:10px;flex-wrap:wrap}
.sitrak-logo{flex:1 1 auto}
.sitrak-logo img{max-width:210px;max-height:52px;width:100%}
.main-navigation{display:none;order:10;width:100%;margin-left:0;padding:12px 0 16px;flex-direction:column;align-items:stretch;gap:0}
.main-navigation.is-open{display:flex}
.main-navigation a{padding:12px 4px;font-size:16px;border-top:1px solid rgba(255,255,255,.1)}
.header-phone{min-width:auto;height:40px;padding:0 13px;border-radius:7px;font-size:13px}
.mobile-menu-button{display:block}
.hero{padding:64px 0}
h1{font-size:40px}
h2{font-size:32px}
}

@media(max-width:480px){
.header-container{width:calc(100% - 16px);min-height:62px;gap:7px}
.sitrak-logo img{max-width:175px;max-height:45px}
.header-phone{height:37px;padding:0 9px;font-size:12px}
.mobile-menu-button{width:38px;height:38px;padding:5px}
.mobile-menu-button span{height:2px;margin:4px 0}
h1{font-size:34px}
}
html,body{overflow-x:hidden}