:root{
    --blue:#0039a6;
    --navy:#04142f;
    --ink:#101722;
    --body:#394655;
    --muted:#657486;
    --line:#d8e0ea;
    --soft:#f4f7fb;
    --ice:#e9f4ff;
    --teal:#0a8ca8;
    --amber:#d9a221;
    --max:1240px;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{margin:0;color:var(--body);background:#fff;font:16px/1.5 Arial,Helvetica,sans-serif}
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%}
  button{font:inherit}

  .topbar{min-height:40px;background:var(--navy);color:rgba(255,255,255,.76);border-bottom:1px solid rgba(255,255,255,.14)}
  .topbar-inner{width:min(var(--max),calc(100% - 48px));margin:auto;display:flex;justify-content:flex-end;align-items:center;gap:30px;min-height:40px;font-size:13px;font-weight:700}
  .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);box-shadow:0 8px 22px rgba(4,20,47,.06)}
  .header-inner{width:min(var(--max),calc(100% - 48px));min-height:82px;margin:auto;display:grid;grid-template-columns:180px 1fr auto;align-items:center;gap:28px}
  .brand{display:flex;align-items:center;width:180px;min-height:58px}
  .brand img{width:178px;height:auto;object-fit:contain}
  .nav{display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;color:var(--ink)}
  .nav a{position:relative;display:flex;align-items:center;min-height:82px;padding:0 16px}
  .nav a::after{content:"";position:absolute;left:16px;right:16px;bottom:0;height:4px;background:transparent}
  .nav a:hover::after{background:var(--blue)}
  .header-actions{display:flex;align-items:center;gap:18px;color:var(--ink);font-size:15px;font-weight:800}
  .icon-button{position:relative;display:inline-grid;place-items:center;width:42px;height:42px;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--blue);cursor:pointer}
  .search-symbol{position:relative;display:block;width:20px;height:20px;overflow:visible}.search-symbol::before{content:"";position:absolute;left:1px;top:1px;width:12px;height:12px;border:2px solid var(--blue);border-radius:50%}.search-symbol::after{content:"";position:absolute;width:9px;height:2px;right:1px;bottom:3px;background:var(--blue);border-radius:2px;transform:rotate(45deg);transform-origin:left center}
  .menu-symbol{display:grid;gap:4px;width:18px}
  .menu-symbol span{display:block;height:2px;background:var(--blue)}
  .hamburger{display:none}
  .mobile-panel{display:none;border-top:1px solid var(--line);background:#fff}
  .mobile-panel a{display:block;padding:15px 24px;border-bottom:1px solid var(--line);color:var(--ink);font-weight:800}

  .hero{
    min-height:640px;
    display:grid;
    align-items:end;
    color:#fff;
    background:
      linear-gradient(90deg,rgba(4,20,47,.96),rgba(4,20,47,.7) 56%,rgba(4,20,47,.18)),
      url("general-aviation-card.jpeg") center/cover no-repeat;
  }
  .hero-inner{width:min(var(--max),calc(100% - 48px));margin:auto;padding:86px 0}
  .eyebrow{margin:0 0 14px;color:var(--blue);font-size:13px;line-height:1.2;font-weight:800;text-transform:uppercase}
  .hero .eyebrow{color:#a8d8ff}
  h1,h2,h3,p{overflow-wrap:anywhere}
  h1{max-width:850px;margin:0;color:#fff;font-size:66px;line-height:1.03;letter-spacing:0}
  .lead{max-width:720px;margin:24px 0 0;color:rgba(255,255,255,.86);font-size:21px;line-height:1.45}
  .button-row{display:flex;flex-wrap:wrap;gap:16px;margin-top:34px}
  .button{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:13px 24px;border:2px solid var(--blue);background:var(--blue);color:#fff;font-weight:800}
  .button.secondary{background:#fff;color:var(--blue)}

  .section{width:min(var(--max),calc(100% - 48px));margin:auto;padding:76px 0}
  .section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:30px}
  h2{margin:0;color:var(--ink);font-size:42px;line-height:1.12;letter-spacing:0}
  .section-head p{max-width:560px;margin:0;color:var(--muted);font-size:18px}
  .product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
  .product-card{min-width:0;min-height:320px;display:grid;align-content:end;position:relative;overflow:hidden;color:#fff;background:#132b48}
  .product-card::before{content:"";position:absolute;inset:0;background:var(--bg) center/cover no-repeat;transform:scale(1.01)}
  .product-card::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(4,20,47,.9),rgba(4,20,47,.16) 62%)}
  .product-card > *{position:relative;z-index:1}
  .product-card .copy{padding:28px}
  .product-card b{display:inline-block;margin-bottom:12px;color:#b8d8ff;font-size:13px;text-transform:uppercase}
  .product-card h3{margin:0;color:#fff;font-size:27px;line-height:1.16}
  .product-card p{margin:12px 0 0;color:rgba(255,255,255,.78)}
  .product-card:nth-child(1){--bg:url("general-aviation-card.jpeg")}
  .product-card:nth-child(2){--bg:url("long-range-efficiency-news.jpeg")}
  .product-card:nth-child(3){--bg:url("corporate-aviation-card.jpg")}
  .product-card:nth-child(4){--bg:url("airports-card.jpeg")}
  .product-card:nth-child(5){--bg:url("website-hero-30s-1-preview.jpg")}
  .product-card:nth-child(6){--bg:url("website-hero-20s-7-preview.jpg")}
  .product-card:nth-child(7){--bg:url("planecare-hero-40s-preview.jpg")}
  .product-card:nth-child(8){--bg:url("flightlab-fuel-analytics.png")}
  .product-card:nth-child(9){--bg:url("flightlab-inspect.png")}

  .calculator-band{background:var(--soft);border-block:1px solid var(--line)}
  .calculator-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
  .calculator-card{min-height:300px;padding:34px;border:1px solid var(--line);background:#fff;display:grid;align-content:space-between}
  .calculator-card h3{margin:0;color:var(--ink);font-size:30px;line-height:1.16}
  .calculator-card p{margin:16px 0 0;color:var(--muted);font-size:18px}
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .tag{padding:7px 10px;background:var(--ice);color:var(--blue);font-size:12px;font-weight:800;text-transform:uppercase}

  .advantage{
    position:relative;
    min-height:540px;
    overflow:hidden;
    color:#fff;
    background:var(--navy);
  }
  .slides{position:absolute;inset:0}
  .slide{
    position:absolute;
    inset:0;
    opacity:0;
    background:var(--image) center/cover no-repeat;
    animation:fadeSlide 24s infinite;
    will-change:opacity;
  }
  .slide:nth-child(2){animation-delay:6s}
  .slide:nth-child(3){animation-delay:12s}
  .slide:nth-child(4){animation-delay:18s}
  .advantage::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,20,47,.96),rgba(4,20,47,.58) 54%,rgba(4,20,47,.18))}
  .advantage-inner{position:relative;z-index:1;width:min(var(--max),calc(100% - 48px));margin:auto;padding:82px 0}
  .advantage h2{max-width:760px;color:#fff;font-size:48px}
  .advantage-list{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:36px}
  .advantage-card{min-height:170px;padding:22px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.1);backdrop-filter:blur(3px)}
  .advantage-card h3{margin:0;color:#fff;font-size:22px}
  .advantage-card p{margin:12px 0 0;color:rgba(255,255,255,.78)}
  @keyframes fadeSlide{
    0%,100%{opacity:0}
    6%,25%{opacity:1}
    31%{opacity:0}
  }

  .footer{background:#07152d;color:rgba(255,255,255,.78)}
  .footer-inner{width:min(var(--max),calc(100% - 48px));margin:auto;padding:54px 0 28px}
  .footer-grid{display:grid;grid-template-columns:1.3fr repeat(5,1fr);gap:28px;padding-bottom:42px;border-bottom:1px solid rgba(255,255,255,.18)}
  .footer-brand{color:#fff;font-size:27px;font-weight:800}
  .footer h4{margin:0 0 16px;color:#fff;font-size:15px}
  .footer a{display:block;margin:10px 0;font-size:14px}
  .footer-bottom{display:flex;justify-content:space-between;gap:24px;padding-top:24px;font-size:13px}
  .legal{display:flex;flex-wrap:wrap;gap:18px}

  @media (max-width:1080px){
    .nav a{padding:0 10px}
    .product-grid{grid-template-columns:1fr 1fr}
    .advantage-list{grid-template-columns:1fr 1fr}
    .footer-grid{grid-template-columns:1fr 1fr}
  }
  @media (max-width:980px){
    .topbar{display:none}
    .header-inner{width:100%;padding:0 20px;grid-template-columns:1fr auto;min-height:72px}
    .nav,.header-actions{display:none}
    .hamburger{display:inline-grid}
    .mobile-panel.open{display:block}
    .hero{min-height:560px}
    .hero-inner,.advantage-inner{width:calc(100% - 40px);padding:58px 0}
    h1{font-size:44px}
    h2,.advantage h2{font-size:34px}
    .lead{font-size:18px}
    .section{width:calc(100% - 40px);padding:56px 0}
    .section-head{display:block}
    .section-head p{margin-top:16px}
    .product-grid,.calculator-grid,.advantage-list,.footer-grid{grid-template-columns:1fr}
    .footer-bottom{display:block}
    .legal{margin-top:16px}
  }

  .search-overlay{position:fixed;inset:0;z-index:120;display:none;background:rgba(4,20,47,.72);backdrop-filter:blur(6px);padding:72px 24px;overflow:auto}
  .search-overlay.open{display:block}
  .search-dialog{width:min(760px,100%);margin:0 auto;background:#fff;color:var(--body);box-shadow:0 28px 80px rgba(4,20,47,.34)}
  .search-head{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 24px;border-bottom:1px solid var(--line)}
  .search-head h2{margin:0;color:var(--ink);font-size:28px;line-height:1.15}
  .search-close{display:inline-grid;place-items:center;width:40px;height:40px;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--blue);font-size:24px;cursor:pointer}
  .search-body{padding:24px}
  .search-input{width:100%;min-height:54px;border:1px solid #cfd9e5;padding:14px 16px;color:var(--ink);font-size:18px}
  .search-results{display:grid;gap:12px;margin-top:18px}
  .search-result{display:block;padding:16px;border:1px solid var(--line);background:var(--soft)}
  .search-result strong{display:block;color:var(--ink);font-size:17px}
  .search-result span{display:block;margin-top:5px;color:var(--muted);font-size:14px}
  .search-empty{margin:18px 0 0;color:var(--muted)}
  .footer-bottom{align-items:center}.legal{align-items:center}