/* AIC LLC — site styles */
:root{
  --navy:#0e1f3a; --navy-2:#16294b; --ink:#1b2330; --muted:#5b6675; --line:#e3e7ee;
  --bg:#ffffff; --bg-2:#f5f7fa; --amber:#e8b12b; --amber-2:#c9930f;
  --radius:10px; --maxw:1120px;
  --font:"Inter","Noto Sans SC","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--navy);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,4vw,2.9rem)}
h2{font-size:clamp(1.4rem,2.6vw,1.9rem)}
h3{font-size:1.15rem}
p{margin:0 0 1em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}

/* header */
.header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header .wrap{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:1.05rem;color:var(--navy)}
.brand:hover{text-decoration:none}
.brand svg{width:40px;height:40px;flex:none}
.brand small{display:block;font-weight:400;font-size:.72rem;color:var(--muted);letter-spacing:.02em}
.nav{margin-left:auto;display:flex;gap:4px;align-items:center}
.nav a{padding:8px 12px;border-radius:6px;font-size:.95rem;color:var(--ink)}
.nav a:hover{background:var(--bg-2);text-decoration:none}
.nav a.active{color:var(--navy);font-weight:600;box-shadow:inset 0 -2px 0 var(--amber)}
.lang{display:flex;gap:2px;margin-left:12px;padding-left:12px;border-left:1px solid var(--line)}
.lang a{padding:6px 8px;border-radius:6px;font-size:.85rem;color:var(--muted)}
.lang a.active{color:var(--navy);font-weight:600;background:var(--bg-2)}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:6px;width:42px;height:42px;cursor:pointer}
.burger span{display:block;width:20px;height:2px;background:var(--navy);margin:4px auto}

/* buttons */
.btn{display:inline-block;padding:12px 22px;border-radius:8px;font-weight:600;font-size:.95rem;border:1px solid transparent;cursor:pointer;font-family:inherit}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--amber);color:var(--navy);border-color:var(--amber)}
.btn-primary:hover{background:var(--amber-2);border-color:var(--amber-2)}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline:hover{border-color:#fff}
.btn-dark{background:var(--navy);color:#fff}
.btn-dark:hover{background:var(--navy-2)}

/* hero */
.hero{background:radial-gradient(1200px 500px at 80% -10%,#24406e 0%,var(--navy) 55%);color:#fff;padding:84px 0 72px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-120px;bottom:-160px;width:460px;height:460px;border-radius:50%;border:80px solid rgba(232,177,43,.10)}
.hero .kicker{display:inline-block;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--amber);margin-bottom:18px;font-weight:600}
.hero h1{max-width:760px;color:#fff}
.hero p{max-width:640px;font-size:1.1rem;color:rgba(255,255,255,.82)}
.hero .actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:56px;padding-top:32px;border-top:1px solid rgba(255,255,255,.15)}
.stats b{display:block;font-size:1.6rem;color:var(--amber)}
.stats span{font-size:.88rem;color:rgba(255,255,255,.75)}

/* sections */
.section{padding:72px 0}
.section.alt{background:var(--bg-2)}
.section-head{max-width:680px;margin-bottom:36px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:0 10px 30px rgba(14,31,58,.08);transform:translateY(-2px)}
.card .icon{width:44px;height:44px;border-radius:10px;background:rgba(232,177,43,.16);display:grid;place-items:center;margin-bottom:18px;color:var(--amber-2)}
.card p{color:var(--muted);flex:1}
.card a.more{font-weight:600;font-size:.92rem}
.why{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 40px}
.why div{padding-left:18px;border-left:3px solid var(--amber)}
.why h3{margin-bottom:.3em}
.why p{color:var(--muted);margin:0}
.closing{background:var(--navy);color:#fff;text-align:center;padding:64px 0}
.closing h2{color:#fff}
.closing p{color:rgba(255,255,255,.8);margin-bottom:24px}

/* page header */
.page-head{background:var(--bg-2);border-bottom:1px solid var(--line);padding:56px 0 44px}
.page-head p.lead{font-size:1.15rem;color:var(--muted);max-width:760px;margin:0}
.content{padding:56px 0}
.prose{max-width:760px}
.prose h2{margin-top:2em}
.prose h2:first-child{margin-top:0}
.prose ul{padding-left:1.2em}
.prose li{margin-bottom:.5em}
.two-col{display:grid;grid-template-columns:1.4fr 1fr;gap:56px;align-items:start}
.facts{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.facts dl{margin:0}
.facts dt{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-top:16px}
.facts dt:first-child{margin-top:0}
.facts dd{margin:2px 0 0;font-weight:500}

/* products */
.product{display:grid;grid-template-columns:1fr 1fr;gap:48px;padding:56px 0;border-top:1px solid var(--line);scroll-margin-top:90px}
.product:first-of-type{border-top:0}
.product .num{font-size:.8rem;letter-spacing:.14em;color:var(--amber-2);font-weight:700;text-transform:uppercase}
.product p{color:var(--muted)}
.spec{width:100%;border-collapse:collapse;font-size:.95rem;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.spec th,.spec td{padding:12px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:0}
.spec th{width:34%;font-weight:600;background:var(--bg-2);color:var(--navy)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:start}
.info dl{margin:0}
.info dt{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-top:18px}
.info dt:first-child{margin-top:0}
.info dd{margin:2px 0 0;font-size:1.02rem}
.form{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:32px}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form label{display:block;font-size:.85rem;font-weight:600;margin:14px 0 6px;color:var(--navy)}
.form .row label:first-child{margin-top:14px}
.form input,.form select,.form textarea{width:100%;padding:11px 13px;border:1px solid #cfd6e0;border-radius:8px;font:inherit;font-size:.95rem;background:#fff;color:var(--ink)}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--amber);outline-offset:1px;border-color:var(--amber)}
.form textarea{min-height:140px;resize:vertical}
.form .privacy{font-size:.8rem;color:var(--muted);margin:14px 0 18px}
.form .hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}
.notice{margin-top:16px;padding:12px 16px;border-radius:8px;font-size:.95rem;display:none}
.notice.ok{display:block;background:#e6f6ea;color:#155d2b;border:1px solid #bfe6c9}
.notice.err{display:block;background:#fdeeee;color:#8a1c1c;border:1px solid #f3c4c4}

/* footer */
.footer{background:var(--navy);color:rgba(255,255,255,.8);padding:56px 0 28px;font-size:.92rem}
.footer .cols{display:grid;grid-template-columns:2fr 1fr 1.2fr;gap:40px}
.footer h4{color:#fff;margin:0 0 14px;font-size:.85rem;letter-spacing:.1em;text-transform:uppercase}
.footer a{color:rgba(255,255,255,.85)}
.footer ul{list-style:none;margin:0;padding:0}
.footer li{margin-bottom:8px}
.footer .brand{color:#fff;margin-bottom:14px}
.footer .brand small{color:rgba(255,255,255,.6)}
.footer .bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.82rem;color:rgba(255,255,255,.55)}

/* responsive */
@media (max-width:900px){
  .cards{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .two-col,.product,.contact-grid{grid-template-columns:1fr;gap:32px}
  .footer .cols{grid-template-columns:1fr}
  .why{grid-template-columns:1fr}
}
@media (max-width:760px){
  .burger{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:68px;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:12px 16px 18px;gap:2px}
  .nav.open{display:flex}
  .nav a{padding:12px}
  .lang{margin:10px 0 0;padding:12px 0 0;border-left:0;border-top:1px solid var(--line)}
  .hero{padding:56px 0 48px}
  .section{padding:52px 0}
  .form .row{grid-template-columns:1fr}
}

/* header: не ломать пункты меню и не наследовать подчёркивание активного пункта на языках */
.brand{flex:none}
.brand small{white-space:nowrap}
.nav a{white-space:nowrap}
.lang a{white-space:nowrap}
.lang a.active{box-shadow:none}
@media (max-width:1080px){
  .brand small{display:none}
  .nav a{padding:8px 9px}
  .header .wrap{gap:16px}
}
@media (max-width:760px){
  .brand small{display:block}
}