:root{
    --navy:#16324F;
    --navy-deep:#0E2338;
    --cyan:#6FC3DE;
    --paper:#EFF2EE;
    --paper-dim:#E4E8E2;
    --ink:#1B1F23;
    --steel:#6C7A85;
    --accent:#147A96;
    --accent-dark:#0E5F79;
    --line:#C7D0CB;
    --mono: 'IBM Plex Mono', ui-monospace, monospace;
    --sans: 'IBM Plex Sans', system-ui, sans-serif;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *{animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important;}
  }
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--sans);
    line-height:1.55;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%; display:block;}
  a{color:inherit;}
  .wrap{max-width:1160px; margin:0 auto; padding:0 24px;}

  /* ---------- Eyebrow / dimension-line divider (signature motif) ---------- */
  .eyebrow{
    font-family:var(--mono);
    font-size:12px;
    letter-spacing:.14em;
    text-transform:uppercase;
    color:var(--accent);
    display:flex;
    align-items:center;
    gap:10px;
    margin:0 0 14px;
  }
  .eyebrow::before{
    content:"";
    width:28px; height:1px;
    background:var(--accent);
  }
  .eyebrow.eyebrow-icon::before{display:none;}
  .eyebrow-icon img{height:32px; width:auto; display:block;}
  .dim-divider{
    display:flex; align-items:center; gap:10px;
    color:var(--steel); font-family:var(--mono); font-size:11px; letter-spacing:.08em;
    margin:0 0 40px;
  }
  .dim-divider::before, .dim-divider::after{
    content:""; flex:1; height:1px; background:var(--line);
    background-image:repeating-linear-gradient(to right, var(--line) 0 6px, transparent 6px 10px);
    background-color:transparent;
  }

  /* ---------- Header / nav ---------- */
  header{
    position:sticky; top:0; z-index:50;
    background:var(--navy);
    border-bottom:1px solid rgba(111,195,222,.25);
  }
  .nav{
    display:flex; align-items:center; justify-content:space-between;
    padding:14px 24px;
    max-width:1160px; margin:0 auto;
  }
  .wordmark{
    display:flex; align-items:center; text-decoration:none;
    background:#fff; border-radius:4px; padding:6px 12px;
  }
  .wordmark img{height:26px; width:auto; display:block;}
  nav.links{display:flex; align-items:center; gap:26px;}
  nav.links a{
    color:#DCE6EA; text-decoration:none; font-size:14px; font-weight:500;
    padding:6px 2px; border-bottom:1px solid transparent;
  }
  nav.links a:hover{color:var(--cyan); border-color:var(--cyan);}
  .btn{
    display:inline-flex; align-items:center; gap:8px;
    font-family:var(--mono); font-weight:600; font-size:13px; letter-spacing:.03em;
    padding:10px 18px; border-radius:2px; text-decoration:none;
    border:1px solid transparent; cursor:pointer;
  }
  .btn-accent{background:var(--accent); color:#fff;}
  .btn-accent:hover{background:var(--accent-dark);}
  .btn-outline{border-color:var(--cyan); color:var(--cyan); background:transparent;}
  .btn-outline:hover{background:rgba(111,195,222,.1);}
  .nav-cta{display:flex; gap:10px; align-items:center;}
  .menu-toggle{
    display:none; background:none; border:1px solid var(--cyan); color:var(--cyan);
    padding:8px 10px; border-radius:2px; font-family:var(--mono);
  }

  /* ---------- Hero ---------- */
  .hero{
    background:var(--navy); color:#fff;
    background-image:
      linear-gradient(rgba(22,50,79,.94), rgba(22,50,79,.98)),
      repeating-linear-gradient(0deg, rgba(111,195,222,.06) 0 1px, transparent 1px 32px),
      repeating-linear-gradient(90deg, rgba(111,195,222,.06) 0 1px, transparent 1px 32px);
    padding:76px 0 64px;
  }
  .hero-grid{
    display:grid; grid-template-columns:1.05fr .95fr; gap:48px; align-items:center;
  }
  .hero h1{
    font-family:var(--mono); font-size:clamp(28px,3.6vw,44px);
    line-height:1.15; margin:0 0 18px; letter-spacing:-.01em;
  }
  .hero h1 em{font-style:normal; color:var(--cyan);}
  .hero p.lede{
    font-size:17px; color:#C9D6DD; max-width:46ch; margin:0 0 28px;
  }
  .hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin-bottom:30px;}
  .trust-line{
    font-size:13px; color:#9FB3BC; border-top:1px solid rgba(255,255,255,.15);
    padding-top:16px; max-width:52ch;
  }
  .trust-line b{color:#DCE6EA;}

  /* hero product slideshow */
  .hero-visual{display:flex; flex-direction:column; gap:14px;}
  .hero-logo{
    align-self:center; height:73px; width:auto; opacity:.92;
  }
  .hero-art{
    background:rgba(255,255,255,.03);
    border:1px solid rgba(111,195,222,.25);
    border-radius:2px; padding:18px;
  }
  .slideshow{
    position:relative; width:100%; aspect-ratio:4/3;
    background:#fff; border:1px solid rgba(111,195,222,.2); overflow:hidden;
  }
  .slideshow .slide{
    position:absolute; inset:0; width:100%; height:100%;
    object-fit:contain; padding:22px; opacity:0; transition:opacity .7s ease;
    cursor:zoom-in;
  }
  .slideshow .slide.active{opacity:1; position:relative;}
  .slideshow .slide:not(.active){pointer-events:none;}
  .slide-nav{
    position:absolute; top:50%; transform:translateY(-50%);
    width:32px; height:32px; border-radius:50%; border:1px solid rgba(22,50,79,.2);
    background:rgba(255,255,255,.9); color:var(--navy); font-size:18px; line-height:1;
    cursor:pointer; display:flex; align-items:center; justify-content:center;
  }
  .slide-nav:hover{background:#fff;}
  .slide-nav.prev{left:10px;}
  .slide-nav.next{right:10px;}
  .slide-dots{
    display:flex; justify-content:center; gap:7px; margin-top:12px;
  }
  .slide-dots button{
    width:7px; height:7px; border-radius:50%; padding:0; border:none;
    background:rgba(111,195,222,.35); cursor:pointer;
  }
  .slide-dots button.active{background:var(--cyan);}
  .hero-art figcaption{
    font-family:var(--mono); font-size:11px; color:var(--steel); color:#8FA3AC;
    margin-top:10px; letter-spacing:.05em;
  }

  /* ---------- Sections ---------- */
  section{padding:72px 0;}
  section.alt{background:#E7EBE5;}
  h2{
    font-family:var(--mono); font-size:clamp(22px,2.6vw,30px);
    margin:0 0 8px; letter-spacing:-.01em;
  }
  .section-head{max-width:70ch; margin-bottom:36px;}
  .section-head p{color:var(--steel); font-size:15.5px; margin:0;}

  /* feature detail cards, callout style ("DETAIL A") tied to real drafting convention */
  .detail-grid{
    display:grid; grid-template-columns:repeat(auto-fit, minmax(280px,1fr));
    gap:22px;
  }
  .detail-card{
    display:block; background:#fff; border:1px solid var(--line); border-radius:3px;
    padding:0 0 20px; text-decoration:none; color:inherit;
    transition:box-shadow .2s ease, transform .2s ease;
  }
  a.detail-card{cursor:pointer;}
  a.detail-card:hover{
    box-shadow:0 8px 20px rgba(22,50,79,.14); transform:translateY(-2px);
  }
  .tile-thumb{
    position:relative; display:block; width:100%; aspect-ratio:4/3;
    background:var(--paper-dim); overflow:hidden; border-bottom:1px solid var(--line);
  }
  .tile-thumb img{
    width:100%; height:100%; object-fit:contain; padding:10px; background:#fff;
  }
  .play-badge{
    position:absolute; right:10px; bottom:10px;
    width:34px; height:34px; border-radius:50%;
    background:var(--navy); color:var(--cyan);
    display:flex; align-items:center; justify-content:center;
    font-size:13px; box-shadow:0 2px 6px rgba(0,0,0,.35);
  }
  .detail-card .card-body{padding:18px 22px 0;}
  .detail-tag{
    display:inline-flex; align-items:center; justify-content:center;
    width:26px; height:26px; border-radius:50%; border:1px solid var(--accent);
    color:var(--accent); font-family:var(--mono); font-size:11px; font-weight:700;
    margin-bottom:14px;
  }
  .detail-card h3{
    font-family:var(--mono); font-size:15.5px; margin:0 0 8px; letter-spacing:0;
    display:flex; align-items:center; gap:7px;
  }
  .new-badge{height:16px; width:auto; display:inline-block; vertical-align:middle;}
  .detail-card p{font-size:14.5px; color:#3E4952; margin:0;}

  /* video lightbox */
  .video-modal{
    position:fixed; inset:0; z-index:200; display:none;
  }
  .video-modal.open{display:block;}
  .video-modal-backdrop{
    position:absolute; inset:0; background:rgba(10,20,30,.86);
  }
  .video-modal-box{
    position:relative; max-width:900px; margin:6vh auto 0; padding:0 20px;
  }
  .video-modal-close{
    position:absolute; top:-38px; right:12px; background:none; border:none;
    color:#fff; font-size:28px; line-height:1; cursor:pointer;
  }
  .video-modal-frame{
    position:relative; width:100%; padding-top:56.25%; background:#000;
    border:1px solid rgba(111,195,222,.4);
  }
  .video-modal-frame iframe{
    position:absolute; inset:0; width:100%; height:100%; border:0;
  }
  .video-modal-image{
    display:none; max-width:100%; max-height:85vh; margin:0 auto;
    border:1px solid rgba(111,195,222,.4); background:#fff;
  }

  /* two-up feature showcase */
  .showcase{display:grid; grid-template-columns:1fr 1fr; gap:52px; align-items:center;}
  .showcase img{border:1px solid var(--line); background:#fff; padding:10px;}
  .showcase ul{margin:18px 0 0; padding:0; list-style:none;}
  .showcase li{
    position:relative; padding-left:22px; margin-bottom:12px;
    font-size:15px; color:#2A3238;
  }
  .showcase li::before{
    content:"—"; position:absolute; left:0; color:var(--accent); font-weight:700;
  }

  /* reviews */
  .quote-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:24px;}
  .quote-card{
    background:var(--navy); color:#EAF0F2; padding:26px 24px; border-radius:3px;
    border-top:3px solid var(--cyan);
  }
  .quote-card p.q{font-size:15px; margin:0 0 14px; line-height:1.6;}
  .quote-card p.cite{
    font-family:var(--mono); font-size:12px; color:var(--cyan); margin:0; letter-spacing:.02em;
  }
  .badges{display:flex; gap:28px; align-items:center; margin-top:34px; flex-wrap:wrap;}
  .badges img{max-height:100px; width:auto;}

  /* about / contact */
  .about-grid{display:grid; grid-template-columns:1.3fr .7fr; gap:48px;}
  .spec-block{
    background:#fff; border:1px solid var(--line); padding:24px; font-family:var(--mono); font-size:13.5px;
  }
  .spec-block dt{color:var(--steel); margin-top:12px; font-size:11px; letter-spacing:.08em; text-transform:uppercase;}
  .spec-block dt:first-child{margin-top:0;}
  .spec-block dd{margin:2px 0 0; color:var(--ink); font-size:14px;}

  /* CTA band */
  .cta-band{
    background:var(--accent); color:#fff; text-align:center; padding:56px 24px;
  }
  .cta-band h2{color:#fff; margin-bottom:10px;}
  .cta-band p{color:#FFE4D8; margin:0 0 26px; font-size:15.5px;}
  .cta-band .btn-outline{border-color:#fff; color:#fff;}
  .cta-band .btn-outline:hover{background:rgba(255,255,255,.15);}
  .cta-band .btn-accent{background:var(--navy);}
  .cta-band .btn-accent:hover{background:var(--navy-deep);}

  footer{
    background:var(--navy-deep); color:#8FA3AC; padding:34px 24px; font-size:13px;
  }
  .footer-wrap{
    max-width:1160px; margin:0 auto; display:flex; justify-content:space-between;
    align-items:center; flex-wrap:wrap; gap:14px;
  }
  footer a{color:#B9CBD2; text-decoration:none;}
  footer a:hover{color:var(--cyan);}

  @media (max-width:920px){
    .hero-grid, .showcase, .about-grid{grid-template-columns:1fr;}
    .showcase{gap:26px;}
    nav.links{
      position:fixed; inset:56px 0 auto 0; background:var(--navy);
      flex-direction:column; align-items:flex-start; padding:16px 24px;
      border-bottom:1px solid rgba(111,195,222,.25);
      transform:translateY(-140%); transition:transform .25s ease;
    }
    nav.links.open{transform:translateY(0);}
    .menu-toggle{display:block;}
    .nav-cta .btn-outline{display:none;}
  }
  @media (max-width:600px){
    section{padding:52px 0;}
    .hero{padding:52px 0 44px;}
  }

  /* ==========================================================
     Subpage components (used by subscribeautoline.asp,
     purchase-autoline.htm, and other inner pages)
     ========================================================== */

  .page-header{
    background:var(--navy); color:#fff;
    background-image:
      linear-gradient(rgba(22,50,79,.94), rgba(22,50,79,.98)),
      repeating-linear-gradient(0deg, rgba(111,195,222,.06) 0 1px, transparent 1px 32px),
      repeating-linear-gradient(90deg, rgba(111,195,222,.06) 0 1px, transparent 1px 32px);
    padding:48px 0 40px;
  }
  .page-header h1{
    font-family:var(--mono); font-size:clamp(24px,3vw,34px);
    margin:0 0 10px; letter-spacing:-.01em;
  }
  .page-header p.lede{
    color:#C9D6DD; font-size:15.5px; max-width:62ch; margin:0;
  }
  .breadcrumb{
    font-family:var(--mono); font-size:12px; color:#9FB3BC; margin-bottom:14px;
  }
  .breadcrumb a{color:var(--cyan); text-decoration:none;}
  .breadcrumb a:hover{text-decoration:underline;}

  .content-section{padding:56px 0 72px;}
  .content-card{
    background:#fff; border:1px solid var(--line); border-radius:3px;
    padding:34px clamp(20px,4vw,44px); max-width:900px; margin:0 auto;
  }
  .content-card.wide{max-width:1100px;}

  /* Forms */
  .form-grid{
    display:grid; grid-template-columns:220px 1fr; gap:16px 20px; align-items:start;
  }
  .form-grid label{
    font-family:var(--mono); font-size:12.5px; color:var(--navy);
    padding-top:10px; letter-spacing:.02em;
  }
  .required{color:var(--accent); font-weight:700;}
  .form-grid input[type="text"],
  .form-grid input:not([type]),
  .form-grid input[type="email"],
  .form-grid input[type="tel"],
  .form-grid select,
  .form-grid textarea{
    width:100%; max-width:520px; font-family:var(--sans); font-size:14.5px;
    padding:9px 11px; border:1px solid var(--line); border-radius:2px;
    background:#fbfcfb; color:var(--ink);
  }
  .form-grid input:focus,
  .form-grid select:focus,
  .form-grid textarea:focus{
    outline:none; border-color:var(--accent); background:#fff;
  }
  .checkbox-row{display:flex; align-items:flex-start; gap:10px; margin-bottom:8px;}
  .checkbox-row input{margin-top:3px;}
  .form-note{
    font-size:13px; color:var(--steel); background:var(--paper-dim);
    border:1px solid var(--line); border-radius:3px; padding:14px 16px; margin:0 0 28px;
  }
  .form-note u{color:var(--navy);}
  .form-actions{
    display:flex; align-items:center; gap:14px; margin-top:30px;
    padding-top:22px; border-top:1px solid var(--line); flex-wrap:wrap;
  }
  .form-actions input[type="submit"],
  .form-actions input[type="reset"]{
    font-family:var(--mono); font-weight:600; font-size:13px; letter-spacing:.03em;
    padding:10px 22px; border-radius:2px; cursor:pointer; border:1px solid transparent;
  }
  .form-actions input[type="submit"]{background:var(--accent); color:#fff;}
  .form-actions input[type="submit"]:hover{background:var(--accent-dark);}
  .form-actions input[type="reset"]{background:transparent; border-color:var(--line); color:var(--steel);}
  .form-actions input[type="reset"]:hover{border-color:var(--steel); color:var(--ink);}
  .privacy-link{font-size:13px; margin-top:18px;}
  .privacy-link a{color:var(--accent); text-decoration:none;}
  .privacy-link a:hover{text-decoration:underline;}

  /* Pricing table */
  .pricing-table{
    width:100%; border-collapse:collapse; background:#fff;
    border:1px solid var(--line); font-size:14px;
  }
  .pricing-table caption{
    font-family:var(--mono); font-size:13px; letter-spacing:.05em; text-transform:uppercase;
    color:var(--navy); background:var(--paper-dim); padding:12px; border:1px solid var(--line);
    border-bottom:none; text-align:center;
  }
  .pricing-table thead th{
    background:var(--navy); color:#fff; font-family:var(--mono); font-size:12px;
    letter-spacing:.05em; text-transform:uppercase; padding:12px 14px; text-align:left;
  }
  .pricing-table thead th.num, .pricing-table td.num{text-align:center;}
  .pricing-table tbody td{
    padding:14px; border-bottom:1px solid var(--line); vertical-align:top;
  }
  .pricing-table tbody tr:hover{background:var(--paper);}
  .pricing-table .product-name{font-weight:600; color:var(--navy); font-size:14.5px;}
  .pricing-table .price{
    font-family:var(--mono); font-weight:700; color:var(--ink); text-align:center; white-space:nowrap;
  }
  .pricing-table .buy-cell{text-align:center;}
  .btn-cart{
    display:inline-flex; align-items:center; gap:6px; font-family:var(--mono);
    font-size:12.5px; font-weight:600; letter-spacing:.02em;
    background:var(--accent); color:#fff; border:none; border-radius:2px;
    padding:8px 14px; cursor:pointer;
  }
  .btn-cart:hover{background:var(--accent-dark);}
  .inline-cart-form{margin:0; display:inline-block;}
  .volume-note{
    background:var(--paper-dim); border:1px solid var(--line); border-radius:3px;
    padding:16px 20px; margin-bottom:26px; font-size:14.5px; color:#2A3238;
  }
  .volume-note a{color:var(--accent); text-decoration:none;}
  .volume-note a:hover{text-decoration:underline;}
  .fine-print{
    font-size:13px; color:var(--steel); text-align:center; margin-top:26px; max-width:60ch;
    margin-left:auto; margin-right:auto;
  }
  .cart-toolbar{
    display:flex; justify-content:flex-end; gap:10px; margin-bottom:18px; flex-wrap:wrap;
  }
  .cart-toolbar .inline-cart-form input[type="submit"]{
    font-family:var(--mono); font-size:12.5px; font-weight:600;
    padding:8px 16px; border-radius:2px; border:1px solid var(--cyan);
    background:transparent; color:var(--navy); cursor:pointer;
  }
  .cart-toolbar .inline-cart-form input[type="submit"]:hover{background:var(--paper-dim);}

  @media (max-width:720px){
    .form-grid{grid-template-columns:1fr;}
    .form-grid label{padding-top:0;}
    .pricing-table thead{display:none;}
    .pricing-table, .pricing-table tbody, .pricing-table tr, .pricing-table td{display:block; width:100%;}
    .pricing-table tr{border:1px solid var(--line); margin-bottom:12px; border-radius:3px; overflow:hidden;}
    .pricing-table td{border-bottom:1px solid var(--line);}
    .pricing-table td::before{
      content:attr(data-label); display:block; font-family:var(--mono); font-size:10.5px;
      color:var(--steel); text-transform:uppercase; letter-spacing:.05em; margin-bottom:4px;
    }
  }