/* INT Rust Converter - Lightweight, fast, SEO-friendly landing page */
:root{
  --bg:#0b0f14;
  --bg2:#0f1620;
  --card:#121b26;
  --text:#eaf1fb;
  --muted:#a8b4c6;
  --line:#203041;
  --brand:#0b63b6;
  --brand2:#1aa3ff;
  --ok:#41d693;
  --shadow: 0 18px 40px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 20% 10%, rgba(26,163,255,.18), transparent 60%),
              radial-gradient(900px 500px at 80% 20%, rgba(11,99,182,.22), transparent 55%),
              linear-gradient(180deg, var(--bg), #070a0d 65%);
  color:var(--text);
}

a{color:inherit; text-decoration:none}
.container{width:min(1120px, 92%); margin-inline:auto}

.skip-link{
  position:absolute; inset-inline-start: 12px; inset-block-start: 12px;
  padding:10px 12px; border-radius: 10px;
  background: #fff; color:#000;
  transform: translateY(-140%);
}
.skip-link:focus{transform:translateY(0); z-index:9999}

.site-header{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(10px);
  background: rgba(7,10,13,.55);
  border-bottom:1px solid rgba(32,48,65,.6);
}
.header-inner{display:flex; align-items:center; justify-content:space-between; padding:12px 0; gap:14px}
.brand{display:flex; align-items:center; gap:12px; min-width:220px}
.brand-logo{width:44px; height:44px; object-fit:contain; filter: drop-shadow(0 8px 16px rgba(0,0,0,.35));}
.brand-name{font-weight:800; letter-spacing:.2px}
.brand-tag{font-size:12px; color:var(--muted)}

.nav{display:flex; align-items:center; gap:12px}
.nav-toggle{
  display:none;
  background:transparent; border:1px solid rgba(32,48,65,.9);
  color:var(--text); padding:10px 12px; border-radius:12px;
}
.nav-menu{display:flex; align-items:center; gap:14px}
.nav-menu a{color:var(--muted); font-weight:600}
.nav-menu a:hover{color:var(--text)}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:12px 14px; border-radius: 14px;
  font-weight:800; border:1px solid rgba(32,48,65,.9);
  box-shadow: none;
}
.btn-primary{
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  border-color: transparent;
}
.btn-primary:hover{filter: brightness(1.08)}
.btn-ghost{background:transparent}
.btn-ghost:hover{border-color: rgba(255,255,255,.25)}

.hero{padding:48px 0 18px}
.hero-grid{display:grid; grid-template-columns: 1.1fr .9fr; gap:26px; align-items:start}
.badge{
  display:inline-flex; gap:8px; align-items:center;
  color: #cfe7ff;
  background: rgba(26,163,255,.12);
  border:1px solid rgba(26,163,255,.22);
  padding:8px 12px; border-radius: 999px;
  font-weight:700;
}
h1{font-size:clamp(30px, 3.2vw, 44px); margin:14px 0 10px; line-height:1.15}
.accent{color: #bfe3ff}
.lead{color:var(--muted); font-size: 16.5px; line-height:1.9; margin:0 0 14px}

.hero-cta{display:flex; gap:10px; flex-wrap:wrap; margin:18px 0 10px}

.trust{display:flex; gap:12px; margin-top:14px; flex-wrap:wrap}
.trust-item{
  background: rgba(18,27,38,.65);
  border:1px solid rgba(32,48,65,.75);
  padding:10px 12px; border-radius:16px;
  min-width: 140px;
}
.trust-num{font-weight:900; font-size:18px}
.trust-text{color:var(--muted); font-weight:700; font-size:12px; margin-top:2px}

.card{
  background: linear-gradient(180deg, rgba(18,27,38,.9), rgba(10,15,20,.75));
  border:1px solid rgba(32,48,65,.75);
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.product-card{padding:16px}
.product-img{
  width:100%; height:280px; object-fit:contain;
  background: radial-gradient(400px 240px at 50% 40%, rgba(26,163,255,.10), transparent 60%);
  border-radius: 14px;
}
.product-meta{margin-top:12px}
.product-title{font-weight:900}
.product-sub{color:var(--muted); font-weight:700; margin-top:4px}

.note{
  margin-top:12px;
  background: rgba(255,255,255,.04);
  border:1px dashed rgba(255,255,255,.18);
  padding:12px 14px;
  border-radius: 16px;
  color: var(--muted);
  line-height: 1.8;
}

.section{padding:44px 0}
.section-alt{background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0)); border-top:1px solid rgba(32,48,65,.35); border-bottom:1px solid rgba(32,48,65,.35)}
.section h2{font-size: 26px; margin:0 0 10px}
.section-lead{color:var(--muted); line-height:1.85; margin:0 0 18px}

.grid-3{display:grid; grid-template-columns: repeat(3, 1fr); gap:14px}
.feature{
  padding:16px;
  background: rgba(18,27,38,.6);
  border:1px solid rgba(32,48,65,.7);
  border-radius: 18px;
}
.feature h3{margin:0 0 6px; font-size: 16px}
.feature p{margin:0; color:var(--muted); line-height:1.85}

.steps{list-style:none; padding:0; margin:0; display:grid; gap:10px}
.steps li{
  display:grid; grid-template-columns: 160px 1fr;
  gap:12px;
  padding:14px 16px;
  background: rgba(18,27,38,.55);
  border:1px solid rgba(32,48,65,.65);
  border-radius: 18px;
}
.step-title{font-weight:900}
.step-desc{color:var(--muted); line-height:1.9}

.callout{
  margin-top:14px;
  padding:14px 16px;
  background: rgba(65,214,147,.08);
  border:1px solid rgba(65,214,147,.22);
  border-radius: 18px;
  color: #d8ffee;
  line-height: 1.9;
}
.callout.small{color:var(--muted); background: rgba(26,163,255,.08); border-color: rgba(26,163,255,.18)}

.spec-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:12px;
  margin-top:12px;
}
.spec{
  padding:14px 14px;
  background: rgba(18,27,38,.55);
  border:1px solid rgba(32,48,65,.65);
  border-radius: 18px;
}
.spec-k{color:var(--muted); font-weight:800; font-size:12px}
.spec-v{font-weight:900; margin-top:6px}

.details{
  margin-top:10px;
  background: rgba(18,27,38,.55);
  border:1px solid rgba(32,48,65,.65);
  border-radius: 18px;
  padding:12px 14px;
}
.details summary{cursor:pointer; font-weight:900}
.bullets{margin:10px 0 0; color:var(--muted); line-height:1.9}
.packs{display:flex; gap:10px; flex-wrap:wrap; margin-top:12px}
.pack{
  padding:10px 12px;
  background: rgba(18,27,38,.55);
  border:1px solid rgba(32,48,65,.65);
  border-radius: 999px;
  color: var(--muted);
  font-weight:900;
}

.faq{display:grid; gap:10px}

.section-contact{padding-bottom:60px}
.contact-grid{display:grid; grid-template-columns: 1.05fr .95fr; gap:16px; align-items:start}
.contact-cards{display:grid; grid-template-columns: 1fr 1fr; gap:10px; margin-top:12px}
.contact-card{
  padding:14px 14px;
  background: rgba(18,27,38,.55);
  border:1px solid rgba(32,48,65,.65);
  border-radius: 18px;
}
.cc-title{color:var(--muted); font-weight:900; font-size:12px}
.cc-link{display:inline-block; margin-top:6px; font-weight:900}
.cc-hint{margin-top:6px; color:var(--muted); font-size:12px; line-height:1.6}

.form{padding:16px}
label{display:grid; gap:8px; font-weight:900; margin-bottom:12px}
input, textarea{
  width:100%;
  padding:12px 12px;
  border-radius: 14px;
  border:1px solid rgba(32,48,65,.9);
  background: rgba(7,10,13,.35);
  color:var(--text);
  outline:none;
}
input:focus, textarea:focus{border-color: rgba(26,163,255,.5); box-shadow: 0 0 0 4px rgba(26,163,255,.12)}
.form-note{color:var(--muted); line-height:1.7; margin:10px 0 0; font-size:12px}

.site-footer{
  border-top:1px solid rgba(32,48,65,.6);
  padding:18px 0 26px;
  background: rgba(7,10,13,.65);
}
.footer-inner{display:flex; justify-content:space-between; gap:16px; align-items:center; flex-wrap:wrap}
.footer-left{display:flex; align-items:center; gap:12px}
.footer-logo{width:40px; height:40px; object-fit:contain}
.footer-title{font-weight:900}
.footer-sub{color:var(--muted); margin-top:4px; font-size:12px}
.footer-right{display:flex; gap:12px; color:var(--muted); font-weight:800}
.footer-right a:hover{color:var(--text)}

@media (max-width: 920px){
  .hero-grid{grid-template-columns: 1fr; }
  .contact-grid{grid-template-columns: 1fr}
  .grid-3{grid-template-columns: 1fr}
  .spec-grid{grid-template-columns: 1fr}
  .steps li{grid-template-columns: 1fr}
  .nav-toggle{display:inline-flex}
  .nav-menu{
    display:none;
    position:absolute;
    inset-inline-end: 4%;
    inset-block-start: 62px;
    background: rgba(7,10,13,.92);
    border:1px solid rgba(32,48,65,.9);
    border-radius: 16px;
    padding:12px;
    box-shadow: var(--shadow);
    flex-direction:column; align-items:stretch;
    min-width: 220px;
  }
  .nav-menu a{padding:8px 10px}
  .nav-menu.is-open{display:flex}
}