:root{--bg:#e8ecee;--paper:#f7f9fa;--ink:#0e1a24;--mute:#53606a;--line:#c3cbd0;--blue:#1e4fd6;--max:1320px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{font:17px/1.65 "Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}
svg{display:block;max-width:100%}
a{color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
.wrap{width:min(var(--max),100% - 48px);margin-inline:auto}
h1,h2,h3{line-height:1.08;letter-spacing:-.025em;font-weight:700}
h1{font-size:clamp(2.4rem,5.4vw,4.8rem)}
h2{font-size:clamp(1.9rem,3.5vw,2.9rem);max-width:17ch}
h3{font-size:1.3rem;letter-spacing:-.01em;margin-bottom:.5rem}
p{max-width:64ch;color:var(--mute)}
.sec{padding:112px 0}

/* header */
.site-header{position:sticky;top:0;z-index:20;background:var(--bg);border-bottom:1px solid transparent;transition:border-color .3s}
.site-header.stuck{border-color:var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.2rem;letter-spacing:-.02em;text-decoration:none}
.logo i{width:20px;height:20px;border-radius:50%;border:6px solid var(--blue)}
nav{display:flex;align-items:center;gap:2rem}
nav a{text-decoration:none;font-size:.95rem;font-weight:500}
nav a:not(.btn):hover{color:var(--blue)}
.burger{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;position:relative}
.burger span{position:absolute;left:10px;right:10px;height:2px;background:var(--ink);transition:transform .25s}
.burger span:first-child{top:18px}.burger span:last-child{top:26px}
.burger[aria-expanded=true] span:first-child{transform:translateY(4px) rotate(45deg)}
.burger[aria-expanded=true] span:last-child{transform:translateY(-4px) rotate(-45deg)}

/* buttons */
.btn{display:inline-block;padding:.95rem 1.8rem;border:0;border-radius:999px;background:var(--blue);color:#fff;font:600 1rem/1 inherit;cursor:pointer;text-decoration:none;transition:background .2s,transform .2s}
.btn:hover{background:var(--ink);transform:translateY(-2px)}
.btn.small{padding:.65rem 1.2rem;font-size:.92rem}
.plain{font-weight:600;text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:2px;text-decoration-color:var(--line);transition:text-decoration-color .2s}
.plain:hover{text-decoration-color:var(--blue)}

/* hero */
.hero{padding:56px 0 96px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.lead{font-size:1.25rem;margin:1.6rem 0 2.2rem;color:var(--ink)}
.cta{display:flex;align-items:center;gap:2rem;flex-wrap:wrap}
.hero-text>*{animation:rise .8s both}
.hero-text>:nth-child(2){animation-delay:.12s}.hero-text>:nth-child(3){animation-delay:.24s}
.hero-art{justify-self:end;width:min(100%,540px);margin-right:-40px}
.rotor{transform-origin:200px 200px;animation:spin 60s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes rise{from{opacity:0;transform:translateY(14px)}}

/* about */
.about{background:var(--paper)}
.about-grid{display:grid;grid-template-columns:5fr 7fr;gap:80px}
.facts{margin-top:2.5rem;border-top:2px solid var(--ink)}
.facts div{display:grid;grid-template-columns:110px 1fr;gap:1rem;padding:.9rem 0;border-bottom:1px solid var(--line)}
.facts dt{font-weight:600;font-size:.9rem}
.facts dd{color:var(--mute);font-size:.95rem}
.facts a{color:var(--blue)}
.about-main p{margin-bottom:1.3rem}
.about-main .big{font-size:1.65rem;line-height:1.35;color:var(--ink);font-weight:600;letter-spacing:-.015em;margin-bottom:2rem;max-width:30ch}

/* services */
.head{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:end;margin-bottom:56px}
.products{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:2px solid var(--ink)}
.products article{padding:2.2rem 2rem 2.4rem 0;transition:background .3s,padding .3s}
.products article+article{padding-left:2rem;border-left:1px solid var(--line)}
.products h3{font-size:2rem}
.products article:hover{background:var(--paper)}
.support{list-style:none;margin-top:48px;display:grid;grid-template-columns:repeat(3,1fr);gap:48px}
.support li{border-left:4px solid var(--blue);padding-left:1.4rem}

/* benefits */
.benefits{background:var(--ink);color:#fff}
.benefits p{color:#a9b6c0}
.ben-grid{display:grid;grid-template-columns:4fr 8fr;gap:80px}
.ben-head{position:sticky;top:110px;align-self:start}
.ben-head p{margin-top:1.4rem}
.ben-list{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.ben-list>div{padding:1.8rem 0 2.2rem;border-top:1px solid #34495b}
.ben-list .wide{grid-column:1/-1}
.ben-list h3{color:#fff}

/* contact */
.contact-grid{display:grid;grid-template-columns:5fr 6fr;gap:80px;align-items:start}
.contact-info p{margin:1.4rem 0 2rem}
address{font-style:normal;padding:1.4rem 1.6rem;background:var(--paper);border-left:4px solid var(--blue);margin-bottom:2rem}
address strong{display:block}
address a{color:var(--blue);font-weight:600}
.steps{padding-left:1.2rem;color:var(--mute)}
.steps li{margin-bottom:.4rem}
form{background:var(--paper);padding:2.6rem;border:1px solid var(--line)}
.f{margin-bottom:1.3rem}
label{display:block;font-weight:600;font-size:.92rem;margin-bottom:.4rem}
input,textarea{width:100%;font:inherit;padding:.8rem 1rem;border:1px solid #98a4ac;border-radius:6px;background:#fff;color:var(--ink)}
input:focus,textarea:focus{outline:3px solid #b9c9f7;border-color:var(--blue)}
[aria-invalid=true]{border-color:#b3261e}
.err{display:block;min-height:1.2em;color:#b3261e;font-size:.85rem;margin-top:.25rem}
#status{margin-top:1rem;font-size:.95rem}

/* footer */
footer{background:#08111a;color:#a9b6c0;padding:56px 0;font-size:.95rem}
footer strong{color:#fff}
footer a{color:#fff}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}

/* reveal */
.js .rv{opacity:0;transform:translateY(10px);transition:opacity .7s,transform .7s}
.js .rv.in{opacity:1;transform:none}

@media(max-width:900px){
  .sec{padding:80px 0}
  .burger{display:block}
  nav{display:none;position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:flex-start;gap:1.2rem;padding:1.5rem 24px 2rem;background:var(--bg);border-bottom:1px solid var(--line)}
  nav.open{display:flex}
  .hero{padding:24px 0 64px}
  .hero-grid,.about-grid,.head,.ben-grid,.contact-grid,.foot{grid-template-columns:1fr;gap:40px}
  .hero-art{justify-self:center;margin:0;width:min(100%,380px)}
  .products,.support,.ben-list{grid-template-columns:1fr}
  .products article+article{padding-left:0;border-left:0;border-top:1px solid var(--line)}
  .products article{padding-right:0}
  .ben-head{position:static}
  form{padding:1.6rem}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .rv{opacity:1;transform:none}
}