:root{
  --bg0:#05070d;
  --bg1:#0b1220;
  --card:rgba(17,26,46,.72);
  --text:#eef3ff;
  --muted:#b7c2dd;

  --accent:#0b4f8a;   /* синий */
  --accent2:#e58a1f;  /* оранжевый */

  --border:rgba(255,255,255,.10);
  --shadow:0 18px 50px rgba(0,0,0,.45);
  --radius:18px;
  --max:1160px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Helvetica Neue", sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 700px at 12% 10%, rgba(11,79,138,.35), transparent 60%),
    radial-gradient(900px 560px at 70% 15%, rgba(229,138,31,.25), transparent 55%),
    radial-gradient(900px 600px at 80% 90%, rgba(11,79,138,.18), transparent 55%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
  line-height:1.55;
  overflow-x:hidden;
}

/* чертежная сетка */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  opacity:.26;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.07) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(900px 550px at 20% 10%, rgba(0,0,0,1), rgba(0,0,0,.25) 55%, transparent 78%);
}

/* диагональная "лента" */
body::after{
  content:"";
  position:fixed;
  inset:-30% -20%;
  z-index:-3;
  transform: rotate(-12deg);
  background:
    linear-gradient(90deg,
      rgba(229,138,31,.0) 0%,
      rgba(229,138,31,.10) 22%,
      rgba(229,138,31,.22) 50%,
      rgba(229,138,31,.10) 78%,
      rgba(229,138,31,.0) 100%);
  opacity:.55;
  pointer-events:none;
}

a{color:inherit;text-decoration:none}
.container{max-width:var(--max); margin:0 auto; padding:0 18px}
.muted{color:var(--muted)}
.small{font-size:13px}

.header{
  position:sticky;
  top:0;
  z-index:50;
  backdrop-filter:saturate(1.2) blur(12px);
  background:rgba(6,9,16,.55);
  border-bottom:1px solid var(--border);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:12px 0;
  gap:12px;
}
.brand{
  display:flex;
  flex-direction:column;
  line-height:1.05;
}
.brand b{font-size:20px; letter-spacing:.2px}
.brand span{font-size:12px; color:var(--muted)}

.menu{
  display:flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.menu a{
  color:var(--muted);
  padding:9px 10px;
  border-radius:12px;
}
.menu a:hover{color:var(--text); background:rgba(255,255,255,.06)}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:11px 14px;
  border-radius:14px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.06);
  color:var(--text);
  cursor:pointer;
  font-weight:700;
}
.btn:hover{background:rgba(255,255,255,.10)}
.btn.primary{
  border:1px solid rgba(11,79,138,.55);
  background:linear-gradient(180deg, rgba(11,79,138,.60), rgba(11,79,138,.22));
}
.btn.primary:hover{
  background:linear-gradient(180deg, rgba(11,79,138,.75), rgba(11,79,138,.26));
}
.btn.accent{
  border:1px solid rgba(229,138,31,.60);
  background:linear-gradient(180deg, rgba(229,138,31,.60), rgba(229,138,31,.22));
}
.btn.accent:hover{
  background:linear-gradient(180deg, rgba(229,138,31,.78), rgba(229,138,31,.26));
}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}

.section{padding:28px 0}
.section h2{margin:0 0 12px; font-size:28px}
.section p{margin:0}

.hero{padding:34px 0 18px}
.hero-wrap{
  padding:22px;
  position:relative;
  overflow:hidden;
}
.hero-wrap::before{
  content:"";
  position:absolute;
  inset:-80px -100px auto auto;
  width:520px;
  height:520px;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.18), transparent 60%);
  transform: rotate(18deg);
  opacity:.35;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:16px;
  align-items:stretch;
}
@media (max-width:980px){ .hero-grid{grid-template-columns:1fr} }

.hero-top{
  display:flex;
  align-items:center;
  gap:16px;
}
.hero-logo{
  width:182px;
  height:182px;
  border-radius:34px;
  overflow:hidden;
  border:1px solid var(--border);
  background:rgba(255,255,255,.08);
  box-shadow: var(--shadow);
  flex:0 0 auto;
}
.hero-logo img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}

h1{
  margin:0;
  font-size:46px;
  line-height:1.05;
  letter-spacing:-.3px;
}
.lead{
  margin-top:14px;
  color:var(--muted);
  font-size:16px;
  max-width:78ch;
}

.hero-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-top:16px;
}

.kicker{
  color:var(--muted);
  font-weight:800;
  letter-spacing:.2px;
  margin-bottom:10px;
}

.badges{display:flex; flex-direction:column; gap:10px}
.badge{
  padding:12px 14px;
  border-radius:16px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.04);
}
.badge b{display:block}
.badge span{color:var(--muted); font-size:14px}

.grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:14px;
}
@media (max-width:980px){ .grid{grid-template-columns:1fr} }

.item{padding:16px}
.item h3{margin:0 0 6px; font-size:18px}
.item p{margin:0; color:var(--muted)}

.split{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:14px;
}
@media (max-width:980px){ .split{grid-template-columns:1fr} }

hr.sep{border:none; border-top:1px solid var(--border); margin:14px 0}

.form{padding:18px}
label{display:block; font-size:14px; color:var(--muted); margin:10px 0 6px}
input, textarea, select{
  width:100%;
  padding:12px 12px;
  border-radius:14px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.04);
  color:var(--text);
  outline:none;
}
textarea{min-height:110px; resize:vertical}

.faq details{
  border:1px solid var(--border);
  border-radius:16px;
  background:rgba(255,255,255,.04);
  padding:12px 14px;
}
.faq details + details{margin-top:10px}
.faq summary{
  cursor:pointer;
  font-weight:800;
}
.faq p{margin:10px 0 0; color:var(--muted)}

.footer{
  padding:22px 0 44px;
  border-top:1px solid var(--border);
  margin-top:18px;
  color:var(--muted);
  font-size:14px;
}
.footer a{color:var(--muted); text-decoration:underline}

.sticky-call{
  position:fixed;
  right:14px;
  bottom:14px;
  z-index:60;
  display:none;
}
.sticky-call a{
  box-shadow: var(--shadow);
}
@media (max-width:720px){
  .sticky-call{display:block}
  .menu a{display:none}
  .menu .btn{display:inline-flex}
  h1{font-size:34px}
  .hero-logo{width:140px;height:140px;border-radius:28px}
}
@media (max-width:420px){
  h1{font-size:30px}
  .hero-top{gap:12px}
  .hero-logo{width:124px;height:124px}
}