/* ============ TOKENS ============ */
  :root{
    --ground:#0A0E15;
    --surface:#121926;
    --surface-2:#17202F;
    --line:#26314A;
    --line-soft:#1B2333;
    --ink:#EEF2FA;
    --ink-dim:#909BB0;
    --cyan:#35C8DB;
    --magenta:#EA4A88;
    --yellow:#F3C23D;

    --font-display:'Michroma','Arial Narrow',sans-serif;
    --font-body:'IBM Plex Sans',-apple-system,'Segoe UI',Roboto,sans-serif;
    --font-mono:'IBM Plex Mono','SF Mono',Consolas,monospace;

    --wrap:1160px;
    --pad-inline:clamp(20px,5vw,64px);
    --section-pad:clamp(64px,10vw,136px);

    --fs-hero:clamp(2.3rem,5.4vw,4.4rem);
    --fs-h2:clamp(1.6rem,3.1vw,2.5rem);
    --fs-h3:clamp(1.1rem,1.7vw,1.35rem);
    --fs-lead:clamp(1.02rem,1.35vw,1.18rem);
  }

  /* ============ BASE ============ */
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  @media (prefers-reduced-motion:reduce){ html{scroll-behavior:auto;} }
  body{
    margin:0;
    background:var(--ground);
    color:var(--ink);
    font-family:var(--font-body);
    font-size:16px;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,ul,dl,dd,figure,table{margin:0;}
  ul{padding:0;}
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  h1,h2,h3{text-wrap:balance;font-weight:600;letter-spacing:-0.01em;}
  table{border-collapse:collapse;width:100%;}
  button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}

  :focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}

  .wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad-inline);}
  .section{padding-block:var(--section-pad);}

  .eyebrow{
    font-family:var(--font-mono);
    font-size:0.76rem;
    letter-spacing:0.16em;
    text-transform:uppercase;
    color:var(--cyan);
    margin-bottom:1rem;
    display:flex;
    align-items:center;
    gap:0.6em;
  }
  .eyebrow::before{
    content:"";
    width:22px;height:1px;background:var(--cyan);display:inline-block;
  }
  h2{font-size:var(--fs-h2);line-height:1.12;}
  .lead{font-size:var(--fs-lead);color:var(--ink-dim);max-width:640px;margin-top:1.1rem;line-height:1.65;}

  /* ============ BUTTONS ============ */
  .btn{
    display:inline-flex;align-items:center;gap:0.5em;
    font-family:var(--font-mono);font-size:0.82rem;font-weight:500;
    letter-spacing:0.04em;text-transform:uppercase;
    padding:0.95em 1.5em;border-radius:2px;border:1px solid transparent;
    transition:background 0.2s ease,border-color 0.2s ease,transform 0.2s ease,box-shadow 0.2s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--cyan);color:var(--ground);}
  .btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 24px -8px rgba(53,200,219,0.55);}
  .btn-ghost{border-color:var(--line);color:var(--ink);}
  .btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);}
  .btn.small{padding:0.7em 1.1em;font-size:0.74rem;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:0.9rem;margin-top:2.1rem;}

  /* ============ CORNER BRACKETS ============ */
  .bracket-frame{position:relative;}
  .corner{position:absolute;width:16px;height:16px;pointer-events:none;}
  .corner-tl{top:-1px;left:-1px;border-top:1.5px solid var(--cyan);border-left:1.5px solid var(--cyan);}
  .corner-tr{top:-1px;right:-1px;border-top:1.5px solid var(--cyan);border-right:1.5px solid var(--cyan);}
  .corner-bl{bottom:-1px;left:-1px;border-bottom:1.5px solid var(--cyan);border-left:1.5px solid var(--cyan);}
  .corner-br{bottom:-1px;right:-1px;border-bottom:1.5px solid var(--cyan);border-right:1.5px solid var(--cyan);}

  /* ============ NAV ============ */
  .nav{
    position:sticky;top:0;z-index:50;
    background:rgba(10,14,21,0.7);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid transparent;
    transition:border-color 0.3s ease,background 0.3s ease;
  }
  .nav.is-scrolled{border-bottom-color:var(--line);background:rgba(10,14,21,0.92);}
  .nav-inner{
    max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad-inline);
    height:76px;display:flex;align-items:center;gap:1.5rem;
  }
  .brand{display:flex;align-items:center;gap:0.7rem;margin-right:auto;}
  .brand-mark{width:32px;height:auto;flex-shrink:0;}
  .brand-text{display:flex;flex-direction:column;line-height:1.05;white-space:nowrap;}
  .brand-wordmark{height:18px;width:auto;display:block;}
  .brand-text small{font-family:var(--font-mono);font-size:0.55rem;letter-spacing:0.14em;color:var(--ink-dim);font-weight:500;margin-top:0.35em;}
  .nav-links{display:none;align-items:center;gap:1.6rem;font-family:var(--font-mono);font-size:0.8rem;letter-spacing:0.03em;}
  .nav-links a{color:var(--ink-dim);transition:color 0.2s ease;position:relative;}
  .nav-links a:hover{color:var(--ink);}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;width:34px;height:34px;}
  .nav-toggle span{width:100%;height:1.5px;background:var(--ink);transition:transform 0.25s ease,opacity 0.25s ease;}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

  .mobile-nav{
    max-height:0;overflow:hidden;
    background:rgba(10,14,21,0.98);border-bottom:1px solid var(--line);
    transition:max-height 0.3s ease;
  }
  .mobile-nav.is-open{max-height:400px;}
  .mobile-nav-inner{padding:1.5rem var(--pad-inline) 2rem;display:flex;flex-direction:column;gap:1.2rem;font-family:var(--font-mono);font-size:0.95rem;}
  .mobile-nav-inner a{color:var(--ink-dim);}
  .mobile-nav-inner a.btn{color:var(--ground);width:fit-content;margin-top:0.4rem;}

  @media (min-width:900px){
    .nav-links{display:flex;}
    .nav-cta{display:inline-flex;}
    .nav-toggle{display:none;}
    .mobile-nav{display:none;}
  }

  /* ============ HERO ============ */
  .hero{
    position:relative;
    padding-top:clamp(56px,9vw,110px);
    padding-bottom:clamp(64px,9vw,110px);
    overflow:hidden;
  }
  .hero::before{
    content:"";position:absolute;inset:0;z-index:-1;
    background:
      radial-gradient(ellipse 60% 50% at 82% 8%, rgba(53,200,219,0.16), transparent 60%),
      radial-gradient(ellipse 50% 40% at 8% 90%, rgba(234,74,136,0.10), transparent 60%);
  }
  .hero-grid-overlay{
    position:absolute;inset:0;z-index:-1;opacity:0.5;
    background-image:
      linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
      linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
    background-size:64px 64px;
    -webkit-mask-image:linear-gradient(to bottom, black, transparent 85%);
    mask-image:linear-gradient(to bottom, black, transparent 85%);
  }
  .hero-inner{
    max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad-inline);
  }
  .hero-copy{max-width:660px;}
  .hero h1{font-family:var(--font-display);font-size:var(--fs-hero);line-height:1.08;letter-spacing:-0.01em;}
  .hero-sub{margin-top:1.4rem;font-size:var(--fs-lead);color:var(--ink-dim);max-width:52ch;line-height:1.65;}

  /* ============ REVEAL ============ */
  .reveal{opacity:1;transform:none;}
  .js .reveal{opacity:0;transform:translateY(18px);transition:opacity 0.7s ease,transform 0.7s ease;}
  .js .reveal.is-visible{opacity:1;transform:none;}
  @media (prefers-reduced-motion:reduce){ .js .reveal{opacity:1;transform:none;transition:none;} }

  /* ============ SYSTEM CARDS ============ */
  .system-cards{margin-top:3rem;display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);border:1px solid var(--line);}
  .system-card{background:var(--surface);padding:2rem;display:flex;flex-direction:column;gap:1rem;transition:background 0.25s ease;}
  .system-card:hover{background:var(--surface-2);}
  .system-card .sc-icon{width:34px;height:34px;color:var(--cyan);}
  .system-card h3{font-size:1.15rem;font-weight:600;margin-top:0.4rem;}
  .system-card p{color:var(--ink-dim);font-size:0.92rem;line-height:1.55;}
  .system-card .sc-tag{margin-top:auto;padding-top:0.8rem;font-family:var(--font-mono);font-size:0.74rem;color:var(--cyan);letter-spacing:0.04em;}
  @media (min-width:760px){ .system-cards{grid-template-columns:repeat(3,1fr);} }

  /* ============ PRODUCT SECTIONS ============ */
  .product{border-top:1px solid var(--line);}
  .product-grid{display:grid;grid-template-columns:1fr;gap:3rem;align-items:center;}
  .product-visual{display:flex;justify-content:center;}
  .diagram-frame{padding:2.2rem;background:radial-gradient(circle at 50% 40%, var(--surface-2), var(--surface));border:1px solid var(--line);width:100%;max-width:360px;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;overflow:hidden;}
  .diagram{width:78%;height:78%;object-fit:contain;}

  .product-copy h2{margin-top:0.2rem;}
  .product-model{font-family:var(--font-mono);color:var(--ink-dim);font-size:0.85rem;margin-top:0.5rem;}
  .product-copy .lead{max-width:56ch;}

  .feature-list{list-style:none;margin-top:1.6rem;display:flex;flex-direction:column;gap:0.65rem;}
  .feature-list li{padding-left:1.5em;position:relative;font-size:0.95rem;color:var(--ink);}
  .feature-list li::before{content:"›";position:absolute;left:0;top:0;color:var(--cyan);font-family:var(--font-mono);font-weight:600;}

  .spec-table-wrap{margin-top:1.8rem;overflow-x:auto;border-top:1px solid var(--line);}
  .spec-table{font-family:var(--font-mono);font-size:0.86rem;}
  .spec-table tr{border-bottom:1px solid var(--line);}
  .spec-table th,.spec-table td{padding:0.75em 0.4em;text-align:left;font-weight:400;white-space:nowrap;}
  .spec-table th{color:var(--ink-dim);font-weight:400;letter-spacing:0.02em;width:42%;}
  .spec-table td{color:var(--ink);font-variant-numeric:tabular-nums;white-space:normal;}

  .product-copy .btn{margin-top:1.8rem;}

  @media (min-width:940px){
    .product-grid{grid-template-columns:0.85fr 1.15fr;gap:4.5rem;}
    .product--reverse .product-grid{grid-template-columns:1.15fr 0.85fr;}
    .product--reverse .product-visual{order:2;}
  }

  /* ============ INTEGRATION ============ */
  .integration{border-top:1px solid var(--line);background:linear-gradient(180deg, transparent, rgba(53,200,219,0.03) 40%, transparent);}
  .integration-grid{display:grid;grid-template-columns:1fr;gap:3rem;align-items:center;}
  .integration-visual{padding:1.4rem;background:var(--surface);border:1px solid var(--line);max-width:420px;margin-inline:auto;width:100%;}
  .integration-visual img{width:100%;height:auto;}
  .integration-copy h2{max-width:18ch;}
  @media (min-width:940px){ .integration-grid{grid-template-columns:0.9fr 1.1fr;gap:4.5rem;} }

  /* ============ FEATURE / APP GRIDS ============ */
  .engineering{border-top:1px solid var(--line);}
  .feature-grid{margin-top:3rem;display:grid;grid-template-columns:1fr;gap:2.4rem;max-width:760px;}
  .feature-item{display:flex;gap:1.1rem;align-items:flex-start;}
  .feature-icon{width:42px;height:42px;flex-shrink:0;color:var(--cyan);}
  .feature-icon .dg-rim-stroke{stroke:var(--line);}
  .feature-item h3{font-size:1rem;font-weight:600;}
  .feature-item p{margin-top:0.4rem;color:var(--ink-dim);font-size:0.9rem;line-height:1.55;}
  @media (min-width:640px){ .feature-grid{grid-template-columns:repeat(2,1fr);} }

  .applications{border-top:1px solid var(--line);}
  .app-grid{margin-top:3rem;display:grid;grid-template-columns:1fr;gap:0;border-top:1px solid var(--line);}
  .app-item{padding:1.8rem 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:1fr;gap:0.5rem;}
  .app-item .app-tag{font-family:var(--font-mono);font-size:0.72rem;letter-spacing:0.1em;text-transform:uppercase;color:var(--magenta);}
  .app-item h3{font-size:1.05rem;font-weight:600;}
  .app-item p{color:var(--ink-dim);font-size:0.9rem;max-width:60ch;}
  @media (min-width:760px){ .app-item{grid-template-columns:220px 1fr;align-items:baseline;gap:1.5rem;} }

  /* ============ CONTACT ============ */
  .contact{border-top:1px solid var(--line);}
  .contact-panel{padding:clamp(2.4rem,6vw,4.5rem);background:radial-gradient(ellipse 80% 100% at 50% 0%, rgba(53,200,219,0.08), transparent 60%),var(--surface);border:1px solid var(--line);text-align:center;}
  .contact-panel .eyebrow{justify-content:center;}
  .contact-panel h2{max-width:20ch;margin-inline:auto;}
  .contact-panel .lead{margin-inline:auto;text-align:center;}
  .contact-panel .hero-actions{justify-content:center;}
  .contact-note{margin-top:1.6rem;font-family:var(--font-mono);font-size:0.8rem;color:var(--ink-dim);}

  /* ============ FOOTER ============ */
  .footer{border-top:1px solid var(--line);padding-block:4rem 2rem;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:2.6rem;padding-bottom:3rem;}
  .footer-brand{display:flex;flex-direction:column;gap:0.9rem;max-width:280px;}
  .footer-logo{width:120px;height:auto;display:block;}
  .footer-brand p{color:var(--ink-dim);font-size:0.85rem;line-height:1.5;}
  .footer-col{display:flex;flex-direction:column;gap:0.8rem;}
  .footer-heading{font-family:var(--font-mono);font-size:0.72rem;letter-spacing:0.1em;text-transform:uppercase;color:var(--ink-dim);margin-bottom:0.4rem;}
  .footer-col a{color:var(--ink);font-size:0.92rem;}
  .footer-col a:hover{color:var(--cyan);}
  .footer-bottom{border-top:1px solid var(--line);padding-top:1.6rem;display:flex;flex-wrap:wrap;justify-content:space-between;gap:0.8rem;font-family:var(--font-mono);font-size:0.74rem;color:var(--ink-dim);}
  @media (min-width:760px){ .footer-grid{grid-template-columns:1.4fr repeat(2,1fr);} }

  /* ============ SVG DIAGRAM SHARED ============ */
  .dg-line{stroke:var(--ink-dim);stroke-width:2;}
  .dg-rim-stroke{stroke:var(--line);}
  .dg-accent-line{stroke:var(--cyan);stroke-width:2.2;}
  .dg-accent2{fill:var(--magenta);}
  .dg-accent-fill{fill:var(--cyan);}
  .dg-fill-surface{fill:var(--surface-2);}
  .dg-text{font-family:var(--font-mono);fill:var(--ink-dim);}