/* Self-hosted fonts: IBM Plex Mono, IBM Plex Sans, Saira Condensed */

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono-500-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono-600-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/ibm-plex-sans-400-greek.woff2') format('woff2');
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/ibm-plex-sans-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/ibm-plex-sans-500-greek.woff2') format('woff2');
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/ibm-plex-sans-500-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/ibm-plex-sans-600-greek.woff2') format('woff2');
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/ibm-plex-sans-600-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/ibm-plex-sans-700-greek.woff2') format('woff2');
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/ibm-plex-sans-700-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Saira Condensed';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/saira-condensed-600-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Saira Condensed';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/saira-condensed-700-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Saira Condensed';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('../fonts/saira-condensed-800-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Cyrillic coverage: Saira Condensed ships no Cyrillic glyphs at all, and the Latin/Greek-only
   IBM Plex subsets above silently fall back to a mismatched system font for Bulgarian text —
   these fill in the missing script so BG renders at the same size/weight as EN. */
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono-400-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono-500-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono-600-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/ibm-plex-sans-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/ibm-plex-sans-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/ibm-plex-sans-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/ibm-plex-sans-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

/* Oswald stands in for Saira Condensed on Cyrillic characters only (Saira Condensed has no
   Cyrillic glyphs, so the browser falls through to this family automatically, per-character —
   Latin headings keep using Saira Condensed 800, Cyrillic ones get a real bold condensed face
   instead of losing weight to a generic system fallback). */
@font-face {
  font-family: 'Oswald';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/oswald-700-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Oswald';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/oswald-700-cyrillic.woff2') format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

  :root{
    --ground:#0E0F11;
    --ground-2:#0A0B0C;
    --panel:#161719;
    --panel-2:#1E2023;
    --line:rgba(255,255,255,.10);
    --line-strong:rgba(255,255,255,.20);
    --ink:#EDEEF0;
    --muted:#9A9DA3;
    --muted-2:#64676C;
    --accent:#FFFFFF;
    --accent-ink:#0E0F11;
    --accent-soft:rgba(255,255,255,.08);
    --optimum:#1E8449;
    --label:#C9CCD1;
    --danger:#FF6B5C;
    --maxw:1460px;
    --fs-display:clamp(3.2rem,9vw,7.5rem);
    --fs-h2:clamp(2rem,4.6vw,3.4rem);
    --fs-h3:clamp(1.3rem,2vw,1.6rem);
  }

  *{box-sizing:border-box}
  html{scroll-behavior:smooth;font-size:clamp(16px, calc(0.34vw + 10.4px), 25px)}
  body{
    margin:0;
    background:var(--ground);
    color:var(--ink);
    font-family:"IBM Plex Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
    font-size:1.0625rem;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  h1,h2,h3{font-family:"Saira Condensed","Oswald","Arial Narrow",system-ui,sans-serif;font-weight:800;line-height:.95;letter-spacing:.005em;text-transform:uppercase;text-wrap:balance;margin:0}
  p{margin:0}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  ::selection{background:var(--accent);color:var(--accent-ink)}

  .wrap{width:min(90vw, 2400px);max-width:none;margin:0 auto;padding:0}
  .eyebrow{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.28em;text-transform:uppercase;color:var(--label);font-weight:500;display:inline-flex;align-items:center;gap:10px}
  .eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);display:inline-block}
  .muted{color:var(--muted)}
  .rule{height:1px;background:var(--line);border:0;margin:0}

  a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
    outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}

  /* ---------- header ---------- */
  /* background+blur live on ::before, not on header itself: backdrop-filter on the
     header would create a new containing block for position:fixed descendants (the
     full-screen mobile nav), pinning it to the header's own small box instead of the
     viewport. */
  header{
    position:sticky;top:0;z-index:50;
    border-bottom:1px solid var(--line);
  }
  header::before{
    content:"";position:absolute;inset:0;z-index:-1;
    background:rgba(17,20,24,.82);
    backdrop-filter:blur(10px);
  }
  .bar{display:flex;align-items:center;gap:28px;height:72px}
  .brand{display:flex;align-items:center;gap:12px;font-family:"Saira Condensed","Oswald",sans-serif;font-weight:800;font-size:1.5rem;letter-spacing:.14em;text-transform:uppercase}
  .brand .mark{width:26px;height:26px;flex:0 0 auto;color:var(--accent)}
  .brand .mark svg{width:100%;height:100%;display:block;animation:spin 6s linear infinite;transform-origin:50% 50%}
  nav.primary{display:flex;gap:26px;margin-left:auto}
  .langswitch{display:flex;align-items:center;gap:8px;font-family:"IBM Plex Mono",monospace;font-size:.78rem;letter-spacing:.12em}
  .langswitch span{color:var(--line-strong)}
  .langswitch a{background:none;border:0;padding:2px 1px;color:var(--muted);cursor:pointer;font:inherit;letter-spacing:inherit;text-decoration:none;border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease}
  .langswitch a:hover{color:var(--ink)}
  .langswitch a.active{color:var(--accent);border-bottom-color:var(--accent);pointer-events:none}
  .langswitch--mobile{display:none}
  nav.primary a{font-family:"IBM Plex Mono",monospace;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding:6px 0;position:relative}
  nav.primary a:hover{color:var(--ink)}
  nav.primary a::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;background:var(--accent);transition:right .25s ease}
  nav.primary a:hover::after{right:0}
  .navtoggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0 11px;margin-left:auto;background:transparent;border:1px solid var(--line-strong);border-radius:3px;cursor:pointer}
  .navtoggle span{display:block;height:2px;width:100%;background:var(--ink);transition:transform .25s ease,opacity .2s ease}
  .navtoggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .navtoggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .navtoggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .callbtn{display:inline-flex;align-items:center;gap:8px;font-family:"IBM Plex Mono",monospace;font-size:.8rem;font-weight:500;letter-spacing:.04em;text-transform:uppercase;background:var(--accent);color:var(--accent-ink);padding:10px 16px;border-radius:2px;white-space:nowrap}
  .callbtn:hover{filter:brightness(1.08)}
  html[lang="bg"] nav.primary a{font-size:.68rem;letter-spacing:.07em}
  html[lang="bg"] .callbtn{font-size:.7rem;letter-spacing:.02em;padding:10px 14px}
  html[lang="bg"] .langswitch{font-size:.7rem}
  @media(max-width:860px){
    body.menu-open{overflow:hidden}
    nav.primary{
      position:fixed;inset:0;z-index:60;margin-left:0;
      display:flex;flex-direction:column;justify-content:center;gap:2px;
      padding:calc(72px + 24px) clamp(24px,7vw,48px) 32px;
      background:var(--ground);
      clip-path:inset(0 0 100% 0);visibility:hidden;
      transition:clip-path .7s cubic-bezier(.16,.8,.3,1),visibility 0s linear .7s;
    }
    nav.primary.open{clip-path:inset(0 0 0 0);visibility:visible;transition:clip-path .7s cubic-bezier(.16,.8,.3,1),visibility 0s linear 0s}
    nav.primary a{
      padding:12px 0;font-family:"Saira Condensed","Oswald",sans-serif;font-weight:700;
      font-size:clamp(2.1rem,10vw,3.2rem);letter-spacing:.01em;text-transform:uppercase;color:var(--ink);
      border-top:0;opacity:0;transform:translateY(22px);
      transition:opacity .6s cubic-bezier(.16,.8,.3,1),transform .6s cubic-bezier(.16,.8,.3,1);
    }
    nav.primary.open a{opacity:1;transform:none}
    nav.primary a:nth-child(1){transition-delay:.08s}
    nav.primary a:nth-child(2){transition-delay:.14s}
    nav.primary a:nth-child(3){transition-delay:.2s}
    nav.primary a:nth-child(4){transition-delay:.26s}
    nav.primary a:nth-child(5){transition-delay:.32s}
    nav.primary a:nth-child(6){transition-delay:.38s}
    html[lang="bg"] nav.primary a{font-size:clamp(1.8rem,8.6vw,2.7rem)}
    nav.primary a::after{display:none}
    .navtoggle{display:flex;position:relative;z-index:61}
    .bar{gap:12px}
    .langswitch--desktop{display:none}
    .langswitch--mobile{
      display:flex;margin-top:auto;padding-top:24px;border-top:1px solid var(--line);
      opacity:0;transform:translateY(22px);transition:opacity .6s cubic-bezier(.16,.8,.3,1) .44s,transform .6s cubic-bezier(.16,.8,.3,1) .44s;
    }
    nav.primary.open .langswitch--mobile{opacity:1;transform:none}
  }

  /* ---------- hero ---------- */
  .hero{position:relative;min-height:min(92vh,860px);display:flex;align-items:flex-end;overflow:hidden;border-bottom:1px solid var(--line)}
  #airflow{position:absolute;top:0;left:0;right:0;height:min(92vh,860px);width:100%;display:block}
  .hero-photo{position:absolute;top:0;left:0;right:0;height:min(92vh,860px);z-index:0;background-position:center;background-size:cover;background-repeat:no-repeat;transform:scaleX(-1);filter:grayscale(.35) contrast(1.03) brightness(.92);animation:heroZoom 11s cubic-bezier(.16,.8,.3,1) both}
  @keyframes heroZoom{from{transform:scaleX(-1) scale(1.1)}to{transform:scaleX(-1) scale(1)}}
  .hero::before{content:"";position:absolute;inset:0;background:
    linear-gradient(95deg,rgba(9,10,11,.94) 0%,rgba(9,10,11,.78) 38%,rgba(9,10,11,.34) 72%,rgba(9,10,11,.22) 100%),
    linear-gradient(180deg,rgba(9,10,11,.10) 55%,var(--ground) 100%);
    z-index:2;pointer-events:none}
  #airflow{z-index:1}
  .hero .wrap{position:relative;z-index:3;padding:64px 0}
  .hero h1{font-size:var(--fs-display);max-width:14ch}
  html[lang="bg"] .hero h1{font-size:clamp(2.3rem,6.2vw,5.4rem);max-width:20ch}
  html[lang="bg"] h1,html[lang="bg"] h2,html[lang="bg"] h3{font-family:"Oswald","Saira Condensed","Arial Narrow",system-ui,sans-serif}
  .hero h1 .hl{color:#fff;box-shadow:inset 0 -0.1em 0 rgba(255,255,255,.28)}
  .hero p.lede{max-width:52ch;margin-top:22px;font-size:clamp(1.05rem,1.6vw,1.3rem);color:var(--muted)}
  .hero .eyebrow{margin-bottom:22px;display:block}
  .cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

  /* ---------- hero entrance: eyebrow/lede/cta fade up, headline rises word by word ---------- */
  .hero .eyebrow{animation:heroFadeUp .9s cubic-bezier(.16,.8,.3,1) both;animation-delay:.1s}
  .hero .word{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.06em;margin-bottom:-.06em}
  .hero .word>span{display:inline-block;animation:heroWordUp 1s cubic-bezier(.16,.8,.3,1) both;animation-delay:calc(.28s + var(--i,0) * .06s)}
  .hero p.lede{animation:heroFadeUp .9s cubic-bezier(.16,.8,.3,1) both;animation-delay:.85s}
  .hero .cta-row{animation:heroFadeUp .9s cubic-bezier(.16,.8,.3,1) both;animation-delay:1s}
  @keyframes heroFadeUp{from{opacity:0;transform:translateY(16px)}}
  @keyframes heroWordUp{from{transform:translateY(105%)}}
  .btn{display:inline-flex;align-items:center;gap:10px;font-family:"IBM Plex Mono",monospace;font-size:.85rem;letter-spacing:.06em;text-transform:uppercase;padding:14px 22px;border-radius:2px;border:1px solid transparent;transition:transform .12s ease,background .2s,border-color .2s}
  .btn:hover{transform:translateY(-2px)}
  .btn.solid{background:var(--accent);color:var(--accent-ink);font-weight:600}
  .btn.solid:hover{filter:brightness(1.08)}
  .btn.ghost{border-color:var(--line-strong);color:var(--ink)}
  .btn.ghost:hover{border-color:var(--accent);color:var(--accent)}
  .btn .arw{transition:transform .2s}
  .btn:hover .arw{transform:translateX(4px)}

  /* ---------- stats strip ---------- */
  .stats{background:var(--ground-2);border-bottom:1px solid var(--line)}
  .stats .grid{display:grid;grid-template-columns:repeat(3,1fr)}
  .stat{padding:38px clamp(16px,3vw,32px);border-left:1px solid var(--line)}
  .stat:first-child{border-left:0}
  .stat .n{font-family:"Saira Condensed","Oswald",sans-serif;font-weight:800;font-size:clamp(2.4rem,4.5vw,3.6rem);line-height:1;color:var(--ink)}
  .stat .n b{color:var(--accent);font-weight:800}
  .stat .l{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-top:10px}
  @media(max-width:640px){.stats .grid{grid-template-columns:1fr}.stat{border-left:0;border-top:1px solid var(--line)}.stat:first-child{border-top:0}}

  /* ---------- generic section ---------- */
  section{padding:clamp(16px,2vw,32px) 0}
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:clamp(36px,5vw,60px)}
  .sec-head h2{font-size:var(--fs-h2);max-width:16ch}
  .sec-head .eyebrow{display:block;margin-bottom:16px}
  .lead-copy{max-width:60ch;color:var(--muted);font-size:1.08rem}

  /* about */
  #about{padding:0}
  .about-photo{--ab:min(56px,4.5vw);margin-inline:calc(-1*var(--ab));position:relative;border-radius:6px;overflow:hidden;min-height:clamp(440px,48vw,700px);display:flex;align-items:flex-start;background-position:center;background-size:cover;background-repeat:no-repeat}
  .about-photo::before{content:"";position:absolute;inset:0;pointer-events:none;background:
    linear-gradient(90deg,rgba(9,10,11,.92) 0%,rgba(9,10,11,.62) 46%,rgba(9,10,11,.30) 100%),
    linear-gradient(180deg,rgba(9,10,11,.88) 0%,transparent 32%,transparent 72%,rgba(9,10,11,.6) 100%)}
  .about-overlay{position:relative;z-index:2;padding:clamp(28px,5vw,56px) clamp(28px,5vw,56px) clamp(28px,5vw,56px) var(--ab);max-width:66ch}
  .about-overlay h2{font-size:var(--fs-h2);margin:16px 0 16px}
  .about-overlay p{color:var(--ink);font-size:clamp(1rem,1.5vw,1.18rem);max-width:54ch}
  .about-custom{margin-top:16px;border:1px solid var(--line);border-radius:6px;background:var(--panel);padding:clamp(24px,3.4vw,40px);display:grid;grid-template-columns:.82fr 1.18fr;gap:clamp(24px,3.5vw,48px);align-items:center}
  @media(max-width:820px){.about-custom{grid-template-columns:1fr;gap:24px}}
  .about-custom h3{font-size:1.5rem;margin:12px 0 12px}
  .about-custom p{color:var(--muted);font-size:1.05rem;max-width:52ch}
  .ac-photos{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
  @media(max-width:520px){.ac-photos{grid-template-columns:1fr 1fr}}
  .ac-ph{aspect-ratio:1/1;overflow:hidden;border:1px solid var(--line);border-radius:4px;transition:border-color .4s}
  .ac-ph:hover{border-color:var(--line-strong)}
  .ac-ph-img{width:100%;height:100%;background-position:center;background-size:cover;background-repeat:no-repeat;filter:grayscale(1) contrast(1.04) brightness(.96);transition:filter .55s ease,transform .7s cubic-bezier(.22,1,.36,1)}
  .ac-ph:hover .ac-ph-img{filter:grayscale(0) contrast(1) brightness(1);transform:scale(1.06)}

  /* capabilities */
  .cap-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
  @media(max-width:1200px){.cap-grid{grid-template-columns:repeat(3,1fr)}}
  @media(max-width:860px){.cap-grid{grid-template-columns:repeat(2,1fr)}}
  @media(max-width:480px){.cap-grid{grid-template-columns:1fr}}
  .cap{background:var(--panel);border:1px solid var(--line);border-radius:4px;padding:28px 24px 30px;position:relative;transition:background .2s,border-color .2s,transform .25s}
  .cap:hover{background:var(--panel-2);border-color:var(--line-strong);transform:translateY(-4px)}
  .cap .idx{font-family:"IBM Plex Mono",monospace;font-size:.72rem;color:var(--accent);letter-spacing:.1em}
  .cap .ico{width:38px;height:38px;color:var(--accent);margin:18px 0 20px}
  .cap h3{font-size:1.35rem}
  .cap .spec{font-family:"IBM Plex Mono",monospace;font-size:.78rem;color:var(--muted);margin-top:10px;letter-spacing:.02em}
  .cap p{color:var(--muted);font-size:.96rem;margin-top:12px}

  /* products: landscape (PC-like) screens lay cards out in a row, portrait/near-square
     (phone-like) screens stack them in a column — gated on aspect ratio, not raw width,
     so a wide-but-short window still rows and a tall-but-wide one still stacks */
  .prod-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
  @media(max-width:860px){.prod-grid{grid-template-columns:repeat(2,1fr)}}
  @media(max-width:480px){.prod-grid{grid-template-columns:1fr}}
  .prod{position:relative;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--panel);min-height:340px;display:flex;flex-direction:column;transition:border-color .25s,transform .25s}
  .prod:hover{border-color:var(--accent);transform:translateY(-4px) scale(1.025)}
  .prod .art{position:relative;flex:0 0 auto;height:128px;overflow:hidden}
  .prod .art svg{position:absolute;right:2%;top:50%;transform:translateY(-50%);width:56%;height:56%;color:var(--line-strong);transition:color .3s,transform 1s cubic-bezier(.22,1,.36,1)}
  .prod:hover .art svg{color:rgba(255,90,31,.3);transform:translateY(-50%) scale(1.1)}
  .prod .body{position:relative;z-index:2;flex:1 1 auto;display:flex;flex-direction:column;padding:6px 24px 24px}
  .prod .tag{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
  .prod h3{font-size:1.55rem;margin:10px 0 8px}
  .prod p{color:var(--muted);font-size:.95rem}
  .prod .go{margin-top:auto;padding-top:18px;font-family:"IBM Plex Mono",monospace;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink);display:inline-flex;align-items:center;gap:8px}
  .prod:hover .go{color:var(--accent)}
  a.prod-link{position:absolute;inset:0;z-index:3}
  .prod .go .arw{transition:transform .2s}
  .prod:hover .go .arw{transform:translateX(4px)}

  /* performance / parametrized */
  .perf-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px);align-items:start}
  @media(max-width:860px){.perf-grid{grid-template-columns:1fr;gap:36px}}
  .perf-copy h2{font-size:var(--fs-h2);margin:16px 0 18px}
  .perf-copy .lead-copy{color:var(--muted)}
  .perf-copy .kpi{margin-top:26px;display:flex;gap:28px;flex-wrap:wrap}
  .perf-copy .kpi div{display:flex;flex-direction:column;gap:4px}
  .perf-copy .kpi .n{font-family:"Saira Condensed","Oswald",sans-serif;font-weight:800;font-size:1.9rem;color:var(--ink);line-height:1}
  .perf-copy .kpi .t{font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
  .perf-plot{border:1px solid var(--line);border-radius:6px;background:var(--ground-2);padding:clamp(14px,2vw,22px)}
  .perf-plot svg{width:100%;height:auto;display:block}
  .pf-grid-line{stroke:rgba(255,255,255,.055)}
  .pf-axis{stroke:var(--line-strong)}
  .pf-curve{fill:none;stroke:rgba(154,157,163,.5);stroke-width:2}
  .pf-hi{fill:none;stroke:var(--ink);stroke-width:2.6;stroke-linecap:round}
  .pf-eff{fill:none;stroke:rgba(255,255,255,.20);stroke-width:1.4;stroke-dasharray:4 5}
  .pf-guide{stroke:var(--muted);stroke-width:1;stroke-dasharray:3 4}
  .pf-dot{fill:var(--ink);opacity:0}
  .pf-dot-ring{fill:none;stroke:var(--ink);stroke-width:1.4;opacity:0}
  .pf-txt{fill:var(--muted);font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.06em}
  .pf-title{fill:var(--label);font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.16em}
  .pf-val{fill:var(--ink);font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.04em}
  #perf-guides{opacity:0;transition:opacity .5s ease}
  .pf-pill{fill:var(--optimum)}
  .pf-pill-t{fill:var(--accent);font-family:"IBM Plex Mono",monospace;font-size:9px;letter-spacing:.1em;font-weight:600}

  /* customers */
  .logos{display:grid;grid-template-columns:repeat(7,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:4px;overflow:hidden}
  @media(max-width:900px){.logos{grid-template-columns:repeat(4,1fr)}.logos .logo-cell:nth-last-child(-n+2){grid-column:span 2}}
  @media(max-width:560px){.logos{grid-template-columns:repeat(2,1fr)}.logos .logo-cell:nth-last-child(-n+2){grid-column:auto}}
  .logo-cell{position:relative;background:var(--panel);aspect-ratio:16/7;padding:10px;transition:background .25s}
  .logo-cell:hover{background:var(--panel-2)}
  .logo-cell img{position:absolute;inset:10px;margin:auto;max-width:calc(100% - 20px);max-height:58%;width:auto;height:auto;object-fit:contain;opacity:.92}

  /* reach map */
  .map-card{position:relative;border:1px solid var(--line);border-radius:6px;background:var(--ground-2);padding:clamp(10px,1.6vw,18px);overflow:hidden}
  .map-svg{width:100%;height:auto;display:block;border-radius:3px}
  .geo-land{fill:var(--muted-2);stroke:var(--ground-2);stroke-width:.3;stroke-linejoin:round}
  .geo-land.geo-target{fill:#6b6e74}
  .geo-dot{opacity:0;transition:opacity .4s ease}
  .geo-dot.lit{opacity:1}
  .geo-glow{fill:rgba(255,255,255,.28);filter:blur(2.1px)}
  .geo-ring{fill:none;stroke:rgba(255,255,255,.75);stroke-width:.51;transform-origin:center;transform-box:fill-box;animation:geoPing 2.2s ease-out infinite;animation-play-state:paused}
  .geo-dot.lit .geo-ring{animation-play-state:running}
  .geo-core{fill:var(--accent)}
  @keyframes geoPing{0%{transform:scale(1);opacity:.85}100%{transform:scale(2.8);opacity:0}}
  .map-pop{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.92);opacity:0;pointer-events:none;text-align:center;transition:opacity .5s ease,transform .5s ease;max-width:88%}
  .map-pop.show{opacity:1;transform:translate(-50%,-50%) scale(1)}
  .map-pop .n,.map-pop .t{display:block;font-family:"Saira Condensed","Oswald",sans-serif;font-weight:800;line-height:.95;letter-spacing:.005em;text-transform:uppercase;color:var(--ink)}
  .map-pop .n{font-size:clamp(1.4rem,7vw,var(--fs-h2));white-space:nowrap}
  .map-pop .t{margin-top:10px;font-size:clamp(1.2rem,3vw,1.8rem)}

  /* custom / catalog band */
  .band{background:var(--ground-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:clamp(12px,1.6vw,24px) 0}
  .band-in{display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center}
  @media(max-width:860px){.band-in{grid-template-columns:1fr;gap:26px}}
  .band h2{font-size:clamp(1.8rem,3.6vw,2.8rem)}
  .band p{color:var(--muted);margin-top:16px;max-width:52ch}
  .band .right{justify-self:end}
  @media(max-width:860px){.band .right{justify-self:start}}

  /* EU project */

  /* contact */
  .contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(32px,5vw,64px);align-items:start}
  @media(max-width:860px){.contact-grid{grid-template-columns:1fr}}
  .cinfo .row{padding:22px 0;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:6px}
  .cinfo .row:first-of-type{border-top:0}
  .cinfo .k{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
  .cinfo .v{font-size:1.05rem}
  .cinfo a.v:hover{color:var(--accent)}
  .map-embed{display:flex;align-items:center;gap:14px;margin-top:22px;padding:14px 16px;border:1px solid var(--line);border-radius:6px;background:var(--ground-2);text-decoration:none;transition:border-color .25s,background .25s}
  .map-embed:hover{border-color:var(--accent);background:var(--panel-2)}
  .map-embed img{width:40px;height:40px;flex:0 0 auto}
  .map-embed span{font-family:"IBM Plex Mono",monospace;font-size:.85rem;letter-spacing:.03em;color:var(--ink)}
  form{display:grid;gap:16px;background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:clamp(22px,3vw,32px)}
  .frow{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  @media(max-width:520px){.frow{grid-template-columns:1fr}}
  label{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:8px}
  input,textarea{width:100%;background:var(--ground);border:1px solid var(--line-strong);border-radius:3px;color:var(--ink);font:inherit;font-size:.98rem;padding:12px 14px;transition:border-color .2s}
  input:hover,textarea:hover{border-color:var(--muted)}
  input:focus,textarea:focus{border-color:var(--accent);outline:none}
  textarea{resize:vertical;min-height:120px}
  .consent{display:flex;gap:10px;align-items:flex-start;font-size:.86rem;color:var(--muted)}
  .consent input{width:auto;margin-top:3px;accent-color:var(--accent)}
  form button{justify-self:start;cursor:pointer}
  .formnote{font-size:.82rem;color:var(--muted-2);font-family:"IBM Plex Mono",monospace}
  .ok{display:none;background:var(--accent-soft);border:1px solid var(--accent);color:var(--ink);padding:12px 14px;border-radius:3px;font-size:.9rem}
  .ok.show{display:block}
  .err{display:none;background:rgba(255,107,92,.08);border:1px solid var(--danger);color:var(--ink);padding:12px 14px;border-radius:3px;font-size:.9rem}
  .err.show{display:block}
  .hp-field{position:absolute;left:-9999px;top:-9999px;width:1px;height:1px;overflow:hidden}

  /* footer */
  footer{background:var(--ground-2);border-top:1px solid var(--line);padding:48px 0 40px}
  .foot{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:center}
  .foot .brand{font-size:1.3rem}
  .foot .meta{font-family:"IBM Plex Mono",monospace;font-size:.74rem;color:var(--muted-2);letter-spacing:.06em}
  .foot .meta a:hover{color:var(--accent)}
  .foot-links{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center}
  .cookie-link{font-family:"IBM Plex Mono",monospace;font-size:.74rem;color:var(--muted-2);letter-spacing:.06em;text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--line-strong)}
  .cookie-link:hover{color:var(--ink);text-decoration-color:var(--ink)}

  /* cookie consent */
  .consent-banner{position:fixed;left:16px;right:16px;bottom:16px;z-index:50;max-width:640px;margin:0 auto;background:var(--panel);border:1px solid var(--line-strong);border-radius:6px;padding:20px 22px;display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;justify-content:space-between;box-shadow:0 12px 40px rgba(0,0,0,.4);transform:translateY(140%);opacity:0;transition:transform .4s ease,opacity .4s ease;pointer-events:none}
  .consent-banner.show{transform:translateY(0);opacity:1;pointer-events:auto}
  .consent-msg{flex:1 1 280px;display:flex;flex-wrap:wrap;gap:2px 14px;align-items:baseline}
  .consent-banner p{margin:0;font-size:.86rem;color:var(--muted);line-height:1.5}
  .consent-actions{display:flex;gap:10px;flex:0 0 auto}
  .consent-actions .btn{padding:10px 18px;font-size:.76rem}
  .consent-actions .btn.ghost{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.45)}
  .consent-actions .btn.ghost:hover{background:rgba(255,255,255,.12);border-color:var(--accent)}

  /* legal / privacy page */
  .legal{padding:clamp(48px,7vw,88px) 0 clamp(64px,9vw,120px)}
  .legal .hd{margin-bottom:clamp(28px,4vw,44px)}
  .legal .updated{display:block;margin-top:10px;font-family:"IBM Plex Mono",monospace;font-size:.78rem;color:var(--muted-2)}
  .legal section{max-width:74ch}
  .legal section + section{margin-top:clamp(28px,3.5vw,40px);padding-top:clamp(28px,3.5vw,40px);border-top:1px solid var(--line)}
  .legal h3{font-size:1.05rem;margin:0 0 12px}
  .legal p{color:var(--muted);line-height:1.7;margin:0 0 14px}
  .legal p:last-child{margin-bottom:0}
  .legal ul{color:var(--muted);line-height:1.7;margin:0 0 14px;padding-left:20px}
  .legal a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--line-strong);text-underline-offset:3px}
  .legal a:hover{text-decoration-color:var(--accent)}
  .legal-table-wrap{overflow-x:auto;margin:0 0 14px;border:1px solid var(--line);border-radius:6px}
  .legal table{width:100%;border-collapse:collapse;font-size:.82rem;min-width:520px}
  .legal th,.legal td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line)}
  .legal thead th{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted-2);background:var(--ground-2)}
  .legal tbody td{color:var(--muted)}
  .legal tbody tr:last-child td{border-bottom:0}

  /* product detail page */
  .pp-hero{padding-top:clamp(36px,4vw,56px)}
  .pp-back{display:inline-flex;align-items:center;gap:6px;font-family:"IBM Plex Mono",monospace;font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:22px}
  .pp-back:hover{color:var(--ink)}
  .pp-hero h1{font-size:var(--fs-h2);margin:16px 0 18px}
  .pp-hero .lede{max-width:none;color:var(--muted);font-size:1.08rem}

  /* applications list (used on pages without a size/curve configurator) */
  .pp-apps h2{font-size:1.5rem;margin:0 0 22px}
  .app-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
  @media(max-width:860px){.app-grid{grid-template-columns:repeat(2,1fr)}}
  @media(max-width:520px){.app-grid{grid-template-columns:1fr}}
  .app-item{display:flex;align-items:center;gap:14px;background:var(--panel);border:1px solid var(--line);border-radius:4px;padding:18px 20px;transition:background .2s,border-color .2s}
  .app-item:hover{background:var(--panel-2);border-color:var(--line-strong)}
  .app-item .dot{flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--accent)}
  .app-item span:last-child{font-size:.98rem;color:var(--ink);line-height:1.35}

  .pp-class-title{font-size:1.4rem;margin:0 0 20px}
  .pp-class-title:not(:first-child){margin-top:clamp(40px,5vw,64px)}

  /* "contact us" call-to-action at the bottom of product pages */
  .pp-cta{padding-bottom:clamp(40px,6vw,80px)}
  .cta-box{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 28px;border:1px solid var(--line);border-radius:6px;background:var(--panel);padding:clamp(22px,3vw,34px) clamp(22px,3.4vw,40px);margin-top:clamp(28px,4vw,48px)}
  .cta-box p{margin:0;font-size:1.1rem;color:var(--ink)}

  /* type/sub-type breakdown (centrifugal hub, and simple text-only product pages) */
  .pp-type-desc{color:var(--muted);font-size:.98rem;line-height:1.6;margin:0 0 18px}
  .sub-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
  .sub-card{position:relative;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:4px;background:var(--panel);padding:20px 22px;text-decoration:none;color:inherit;transition:border-color .25s,background .25s,transform .25s}
  .sub-card h4{margin:0 0 8px;font-family:"Oswald","Saira Condensed",sans-serif;font-weight:600;font-size:1.05rem;text-transform:uppercase;letter-spacing:.01em;color:var(--ink)}
  .sub-card p{margin:0;font-size:.88rem;color:var(--muted);line-height:1.5}
  a.sub-card{cursor:pointer}
  a.sub-card .go{display:inline-flex;align-items:center;gap:6px;margin-top:auto;padding-top:14px;font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2)}
  a.sub-card .go .arw{transition:transform .2s}
  a.sub-card:hover{border-color:var(--accent);background:var(--panel-2);transform:translateY(-3px)}
  a.sub-card:hover .go{color:var(--accent)}
  a.sub-card:hover .go .arw{transform:translateX(4px)}

  .pp-grid{display:grid;grid-template-columns:200px minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:stretch}
  @media(max-width:980px){.pp-grid{grid-template-columns:1fr}}

  .pp-channel-grid{display:grid;grid-template-columns:200px minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:stretch}
  @media(max-width:980px){.pp-channel-grid{grid-template-columns:1fr}}
  .pp-list--static{background:transparent;border:1px solid var(--line);border-radius:6px;gap:0}
  .pp-item--static{cursor:default;color:var(--muted);border-bottom:1px solid var(--line)}
  .pp-item--static:last-child{border-bottom:0}
  .pp-item--static:hover{color:var(--muted)}
  .pp-item--static:hover::before{transform:translateY(101%)}
  @media(max-width:980px){.pp-list--static{flex-direction:row;flex-wrap:wrap;border:0;gap:8px}.pp-item--static{border:1px solid var(--line);border-radius:4px;border-bottom:1px solid var(--line)}}
  .pp-visual--static{cursor:default}
  .pp-visual--static img{width:100%;height:100%;object-fit:contain}
  .pp-chart--static{display:block}
  .pp-chart-stack{position:relative;border:1px solid var(--line);border-radius:6px;background:var(--ground-2);padding:clamp(14px,2vw,22px);display:flex;flex-direction:column;justify-content:center;gap:16px}
  .pp-chart-stack .pp-chart--static{border:0;background:transparent;padding:0}
  .pp-chart-stack .pp-chart--static+.pp-chart--static{padding-top:16px;border-top:1px solid var(--line)}
  .pp-channel-desc{color:var(--muted);font-size:.92rem;line-height:1.5;margin:0 0 16px}
  .pp-chart-stack .pp-channel-desc{margin-bottom:0}
  .pp-chart--static svg{width:100%;height:auto;display:block}
  .pp-curve-multi{fill:none;stroke:var(--ink);stroke-width:1.8;stroke-linecap:round;opacity:.85}
  .pp-curve-label{fill:var(--muted);font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.02em}

  .pp-spec-table-wrap{border:1px solid var(--line);border-radius:6px;overflow-x:auto}
  .pp-spec-table{width:100%;table-layout:fixed;border-collapse:collapse;font-family:"IBM Plex Mono",monospace;font-size:.74rem}
  .pp-spec-table th,.pp-spec-table td{padding:10px 6px;text-align:center;border-bottom:1px solid var(--line);overflow:hidden;text-overflow:ellipsis}
  .pp-spec-table td:first-child,.pp-spec-table th:first-child{text-align:left;padding-left:12px}
  .pp-spec-table th{color:var(--label);font-weight:500;letter-spacing:.02em;text-transform:uppercase;font-size:.62rem;line-height:1.3}
  .pp-spec-table tbody tr:last-child td{border-bottom:0}
  .pp-spec-table td:first-child{color:var(--ink);font-weight:600}
  .pp-chart-footnote{margin-top:12px;font-family:"IBM Plex Mono",monospace;font-size:.74rem;line-height:1.5;color:var(--muted-2)}
  .pp-chart-stack .pp-chart-footnote{margin-top:0}

  .pp-list{display:flex;flex-direction:column;justify-content:center;gap:2px;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:var(--line)}
  @media(max-width:980px){.pp-list{flex-direction:row;flex-wrap:wrap;background:transparent;border:0;gap:8px}}
  .pp-item{display:block;position:relative;width:100%;text-align:left;padding:14px 16px;background:var(--panel);color:var(--muted);border:0;overflow:hidden;isolation:isolate;font-family:"Saira Condensed","Oswald",sans-serif;font-weight:700;font-size:1.05rem;letter-spacing:.02em;cursor:pointer;transition:color .4s cubic-bezier(.22,1,.36,1)}
  .pp-item::before{content:"";position:absolute;inset:0;z-index:-1;background:var(--accent);transform:translateY(101%);transition:transform .5s cubic-bezier(.22,1,.36,1)}
  @media(max-width:980px){.pp-item{width:auto;border:1px solid var(--line);border-radius:4px}}
  .pp-item:not([disabled]):hover{color:var(--accent-ink)}
  .pp-item:not([disabled]):hover::before{transform:none}
  .pp-item.is-selected{color:var(--accent-ink)}
  .pp-item.is-selected::before{transform:none}
  .pp-item[disabled]{opacity:.4;cursor:not-allowed}

  .pp-visual{position:relative;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:6px;background:radial-gradient(circle at 50% 38%,var(--panel-2),var(--ground-2));min-height:clamp(420px,52vw,720px);overflow:hidden;padding:36px 20px;cursor:zoom-in}
  .pp-visual svg{max-width:94%;max-height:clamp(360px,48vw,660px);width:auto;height:auto;overflow:visible;filter:brightness(1);transform-origin:center center;transition:filter .35s ease,transform .45s cubic-bezier(.22,.9,.32,1)}
  .pp-visual.is-lit svg{filter:brightness(1.35)}
  .pp-visual-zoomhint{position:absolute;left:0;right:0;bottom:12px;text-align:center;font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted-2);pointer-events:none;opacity:0;transition:opacity .2s ease}
  .pp-visual:hover .pp-visual-zoomhint{opacity:1}
  #ppDims{opacity:1;transition:opacity .25s ease}
  #ppDims.hide{opacity:0}
  .pp-dim-ext{stroke:var(--muted);stroke-width:1.6;stroke-dasharray:2 5;stroke-linecap:round}
  .pp-dim-arrow{stroke:var(--ink);stroke-width:2;color:var(--ink)}
  .pp-dim-label{fill:var(--ink);font-family:"IBM Plex Mono",monospace;font-size:26px;letter-spacing:.02em}

  .pp-chart{position:relative;border:1px solid var(--line);border-radius:6px;background:var(--ground-2);padding:clamp(14px,2vw,22px);display:flex;flex-direction:column}
  .pp-chart svg{width:100%;height:100%;display:block;flex:1 1 auto;min-height:0}
  .pp-chart-label{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--label);margin-bottom:8px;display:flex;align-items:center;justify-content:space-between}
  .pp-chart-label b{color:var(--ink);font-weight:600}
  .pp-curve{fill:none;stroke:var(--ink);stroke-width:2.6;stroke-linecap:round}
  .pp-chart-grid{stroke:rgba(255,255,255,.07)}
  .pp-chart-axis{stroke:var(--line-strong)}
  .pp-chart-ticks{stroke:var(--line-strong);stroke-width:1}
  .pp-chart-tick{fill:var(--muted);font-family:"IBM Plex Mono",monospace;font-size:11px}
  .pp-chart-note{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-align:center;padding:24px;font-family:"IBM Plex Mono",monospace;font-size:.82rem;color:var(--muted);opacity:0;transition:opacity .3s ease;pointer-events:none;background:var(--ground-2)}
  .pp-chart-note.show{opacity:1}

  /* zoom lightbox */
  .pp-lightbox{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:5vh 5vw;background:rgba(5,6,7,.94);opacity:0;pointer-events:none;transition:opacity .25s ease}
  .pp-lightbox.show{opacity:1;pointer-events:auto}
  .pp-lightbox-inner{width:100%;height:100%;display:flex;align-items:center;justify-content:center}
  .pp-lightbox-inner svg{width:auto;height:auto;max-width:100%;max-height:100%}
  .pp-lightbox-close{position:absolute;top:20px;right:24px;width:44px;height:44px;border:1px solid var(--line-strong);border-radius:3px;background:transparent;color:var(--ink);font-size:1.6rem;line-height:1;cursor:pointer;transition:background .2s,color .2s}
  .pp-lightbox-close:hover{background:var(--panel-2);color:var(--accent)}

  @keyframes spin{to{transform:rotate(-360deg)}}

  /* ---- scroll reveal ---- */
  .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.16,.8,.3,1),transform .7s cubic-bezier(.16,.8,.3,1)}
  .reveal.is-visible{opacity:1;transform:none}
  .reveal-stagger>*{opacity:0;transform:translateY(22px);transition:opacity .6s cubic-bezier(.16,.8,.3,1),transform .6s cubic-bezier(.16,.8,.3,1)}
  .reveal-stagger.is-visible>*{opacity:1;transform:none}
  @media(prefers-reduced-motion:reduce){
    *{animation:none!important;scroll-behavior:auto!important;transition:none!important}
  }

/* ---- VCDG flue-gas fans: drawing, data table, performance curves ---- */
.fg-top{display:grid;grid-template-columns:1fr;gap:20px;margin-bottom:clamp(28px,3.5vw,44px)}
.fg-top:has(.fg-photo:not([hidden])){grid-template-columns:1fr 1fr}
@media(max-width:860px){.fg-top:has(.fg-photo:not([hidden])){grid-template-columns:1fr}}
.fg-drawing,.fg-photo{margin:0;border:1px solid var(--line);border-radius:6px;background:var(--ground-2);display:flex;align-items:center;justify-content:center;padding:clamp(12px,2vw,24px)}
.fg-drawing img{display:block;width:100%;max-width:860px;height:auto}
.fg-note{color:var(--muted);max-width:70ch;margin:0 0 18px}
.fg-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:clamp(28px,3.5vw,44px)}
.fg-chip{padding:9px 14px;border:1px solid var(--line);border-radius:4px;background:var(--panel);color:var(--muted);font-family:"Saira Condensed","Oswald",sans-serif;font-weight:700;font-size:1rem;letter-spacing:.02em;cursor:pointer;transition:color .2s,background .2s,border-color .2s}
.fg-chip:hover{color:var(--ink);border-color:var(--line-strong)}
.fg-chip.is-selected{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.fg-tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:6px;background:var(--ground-2);-webkit-overflow-scrolling:touch}
.fg-table{width:100%;min-width:860px;border-collapse:collapse;font-variant-numeric:tabular-nums;font-size:.92rem}
.fg-table th,.fg-table td{padding:9px 10px;text-align:center;border-bottom:1px solid var(--line);white-space:nowrap}
.fg-table thead th{color:var(--muted);font-weight:600;background:var(--panel)}
.fg-table tbody th{text-align:left;color:var(--ink);font-weight:700}
.fg-table tbody tr{cursor:pointer;transition:background .2s}
.fg-table tbody tr:hover{background:var(--panel)}
.fg-table tbody tr.is-selected{background:var(--accent);color:var(--accent-ink)}
.fg-table tbody tr.is-selected th{color:var(--accent-ink)}
.fg-table tbody tr:last-child th,.fg-table tbody tr:last-child td{border-bottom:0}
.fg-unit{margin:8px 0 0;color:var(--muted);font-size:.85rem}
.fg-selected{margin:-6px 0 18px;color:var(--muted)}
.fg-selected strong{color:var(--ink)}
.fg-charts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
@media(max-width:980px){.fg-charts{grid-template-columns:1fr}}
.fg-charts .pp-chart svg{height:auto;flex:none}
.fg-curve{cursor:pointer}
.fg-curve .fg-hit{fill:none;stroke:transparent;stroke-width:14}
.fg-curve .fg-line{fill:none;stroke:var(--muted);stroke-width:1.6;stroke-linecap:round;opacity:.55;transition:opacity .2s,stroke .2s}
.fg-curve .fg-tag{fill:var(--muted);font-family:"IBM Plex Mono",monospace;font-size:10px;opacity:.7}
.fg-curve:hover .fg-line{opacity:1}
.fg-curve.is-selected .fg-line{stroke:var(--accent);stroke-width:3;opacity:1}
.fg-curve.is-selected .fg-tag{fill:var(--ink);opacity:1;font-weight:600}
.fg-foot{margin:14px 0 0;color:var(--muted);font-size:.9rem;max-width:80ch}
.fg-desc{margin-bottom:clamp(24px,3vw,36px)}
.fg-curve .fg-line.fg-dash{stroke-dasharray:7 5}
.fg-photo{padding:0;overflow:hidden}
.fg-photo img{display:block;width:100%;height:100%;object-fit:cover}
.fg-top:has(.fg-photo:not([hidden])) .fg-drawing{align-self:center}
.pp-gal{padding-top:0}
.pp-gallery{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr))}
.pp-gallery--one{grid-template-columns:minmax(0,860px);margin-bottom:clamp(28px,3.5vw,44px)}
.pp-gallery--portrait{grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),340px))}
.pp-gallery figure{margin:0;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:var(--ground-2)}
.pp-gallery img{display:block;width:100%;height:auto}
.ac-photos{grid-template-columns:repeat(4,1fr)}
@media(max-width:520px){.ac-photos{grid-template-columns:1fr 1fr}}
.about-support{display:flex;align-items:center;gap:14px;margin-top:22px;padding-top:20px;border-top:1px solid var(--line-strong);font-family:"IBM Plex Sans",system-ui,sans-serif;font-size:clamp(1rem,1.5vw,1.18rem);font-weight:400;letter-spacing:0;line-height:1.5;color:var(--ink);max-width:54ch}
.about-support-ico{flex:0 0 auto;width:30px;height:30px;color:var(--accent);animation:gearSpin 14s linear infinite}
.about-support-ico svg{width:100%;height:100%;display:block}
@keyframes gearSpin{to{transform:rotate(360deg)}}
.cap-need{margin-top:14px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px clamp(20px,3vw,36px);padding:clamp(22px,3vw,34px) clamp(22px,3.4vw,40px);border:1px solid var(--line-strong);border-radius:4px;background:var(--panel);transition:border-color .25s,background .25s,transform .25s}
.cap-need:hover{border-color:var(--accent);background:var(--panel-2);transform:translateY(-3px)}
.cap-need-ico{width:44px;height:44px;color:var(--accent)}
.cap-need-ico svg{width:100%;height:100%;display:block}
.cap-need-copy{display:flex;flex-direction:column;gap:10px;min-width:0}
.cap-need h3{font-size:clamp(1.5rem,2.6vw,2rem)}
.cap-need-p{color:var(--muted);font-size:1rem;max-width:62ch}
.cap-need .btn .arw{transition:transform .2s}
.cap-need:hover .btn .arw{transform:translateX(4px)}
@media(max-width:760px){.cap-need{grid-template-columns:1fr}.cap-need-btn{justify-self:start}}
.dz{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;text-align:center;padding:22px 16px;border:1px dashed var(--line-strong);border-radius:4px;background:var(--ground);cursor:pointer;transition:border-color .2s,background .2s}
.dz:hover,.dz:focus-visible,.dz.is-over{border-color:var(--accent);background:var(--accent-soft)}
.dz-ico{width:28px;height:28px;color:var(--muted)}
.dz-ico svg{width:100%;height:100%;display:block}
.dz-t{font-size:.95rem;color:var(--ink)}
.dz-t u{text-underline-offset:3px}
.dz-h{font-family:"IBM Plex Mono",monospace;font-size:.72rem;color:var(--muted-2);letter-spacing:.02em}
.dz-list{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:6px}
.dz-list:empty{display:none}
.dz-list li{display:flex;align-items:center;gap:10px;padding:8px 10px;border:1px solid var(--line);border-radius:3px;background:var(--ground);font-size:.88rem}
.dz-list .n{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink)}
.dz-list .s{flex:0 0 auto;font-family:"IBM Plex Mono",monospace;font-size:.72rem;color:var(--muted-2)}
.dz-list button{flex:0 0 auto;background:transparent;border:1px solid var(--line-strong);border-radius:3px;color:var(--muted);font:inherit;font-size:.72rem;padding:3px 8px;cursor:pointer}
.dz-list button:hover{color:var(--ink);border-color:var(--accent)}
.dz-field.is-flash .dz{border-color:var(--accent);background:var(--accent-soft);animation:dzFlash 1.4s ease 2}
@keyframes dzFlash{50%{box-shadow:0 0 0 4px var(--accent-soft)}}
.fg-block-title{font-size:clamp(1.5rem,2.6vw,2rem);margin:0 0 12px}
.fg-block-desc{color:var(--muted);max-width:80ch;margin:0 0 clamp(22px,3vw,32px);line-height:1.6}
.fg + .fg{border-top:1px solid var(--line);margin-top:clamp(28px,4vw,48px);padding-top:clamp(36px,5vw,64px)}
.pp-features .wrap{display:grid;gap:20px}
.pp-feature{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:20px;align-items:stretch}
.pp-feature--portrait{grid-template-columns:minmax(0,.75fr) minmax(0,1.25fr)}
.pp-feature:nth-child(even) figure{order:2}
.pp-feature figure{margin:0;border:1px solid var(--line);border-radius:6px;overflow:hidden;background:var(--ground-2)}
.pp-feature img{display:block;width:100%;height:100%;object-fit:cover}
.pp-feature--portrait img{max-height:620px}
.pp-feature-card{border:1px solid var(--line);border-radius:6px;background:var(--panel);padding:clamp(22px,3vw,40px);display:flex;flex-direction:column;justify-content:center;gap:14px}
.pp-feature-card h3{font-size:clamp(1.45rem,2.4vw,2rem)}
.pp-feature-card p{color:var(--muted);margin:0;line-height:1.65;max-width:62ch}
@media(max-width:820px){.pp-feature,.pp-feature--portrait{grid-template-columns:1fr}.pp-feature:nth-child(even) figure{order:0}}
.fg-top.fg-top--portrait:has(.fg-photo:not([hidden])){grid-template-columns:minmax(0,.62fr) minmax(0,1.38fr)}
@media(max-width:860px){.fg-top.fg-top--portrait:has(.fg-photo:not([hidden])){grid-template-columns:1fr}}
.fg-top--portrait .fg-photo img{max-height:720px}
.fan-laws{margin-top:clamp(36px,5vw,60px);border:1px solid var(--line);border-radius:6px;background:var(--panel);padding:clamp(22px,3vw,36px)}
.fan-laws h3{font-size:clamp(1.3rem,2.2vw,1.7rem);margin:0 0 12px}
.fan-laws>p{color:var(--muted);max-width:86ch;line-height:1.6;margin:0 0 22px}
.fl-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:760px){.fl-grid{grid-template-columns:1fr}}
.fl-card{border:1px solid var(--line);border-radius:4px;background:var(--ground-2);padding:18px 20px}
.fl-card h4{margin:0 0 10px;font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--label);font-weight:500}
.fl-row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:10px 0;border-top:1px solid var(--line)}
.fl-row>span:first-child{color:var(--muted);font-size:.92rem}
.fl-f{font-family:"IBM Plex Mono",monospace;font-size:.95rem;color:var(--ink);white-space:nowrap}
.fl-f sub,.fl-f sup{font-size:.68em}
.fl-frac{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;line-height:1.1;margin:0 2px}
.fl-frac>span:first-child{border-bottom:1px solid var(--ink);padding:0 2px}
.pp-feature:nth-child(even){grid-template-columns:minmax(0,1fr) minmax(0,1.3fr)}
.pp-feature--portrait:nth-child(even){grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr)}
@media(max-width:820px){.pp-feature:nth-child(even),.pp-feature--portrait:nth-child(even){grid-template-columns:1fr}}
.av-profile{margin-top:clamp(28px,3.5vw,44px)}
.av-scale{list-style:none;margin:0;padding:22px 0 0;display:grid;grid-template-columns:repeat(5,1fr);position:relative;background:linear-gradient(90deg,var(--accent-soft),transparent) 0 0/100% 100% no-repeat;border:1px solid var(--line);border-radius:6px}
.av-scale li{display:flex;flex-direction:column;gap:8px;padding:0 14px 20px;border-left:1px solid var(--line)}
.av-scale li:first-child{border-left:0}
.av-d{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.1em;color:var(--label)}
.av-v{font-family:"Saira Condensed","Oswald",sans-serif;font-weight:700;font-size:clamp(1.1rem,2.2vw,1.6rem);color:var(--ink)}
/* product photos are shown whole, never cropped */
.fg-photo{align-self:stretch;display:flex;align-items:center;justify-content:center;background:var(--ground-2)}
.fg-photo img{width:100%;height:auto;max-height:none;object-fit:contain}
.fg-top--portrait .fg-photo img{max-height:none}
.pp-feature figure{display:flex;align-items:center;justify-content:center}
.pp-feature img{height:auto;object-fit:contain}
.pp-feature--portrait img{max-height:none}
.fg-top:has(.fg-photo:not([hidden])) .fg-drawing{align-self:stretch}
a.ac-ph{display:block;cursor:pointer}
a.ac-ph:hover,a.ac-ph:focus-visible{border-color:var(--accent)}
a.ac-ph:focus-visible .ac-ph-img{filter:grayscale(0) contrast(1) brightness(1)}
.pp-features{scroll-margin-top:90px}
.sub-grid--vcnn{grid-template-columns:repeat(6,minmax(0,1fr))}
.sub-grid--vcnn .sub-card{padding:18px 16px}
@media(max-width:1100px){.sub-grid--vcnn{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:640px){.sub-grid--vcnn{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:420px){.sub-grid--vcnn{grid-template-columns:1fr}}
.social-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}
@media(max-width:520px){.social-row{grid-template-columns:1fr}}
.social-row .map-embed{margin-top:0}
.social-ico{width:40px;height:40px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;border-radius:6px;background:var(--panel-2);color:var(--ink);transition:color .25s}
.social-ico svg{width:22px;height:22px;display:block}
.social-link:hover .social-ico{color:var(--accent)}
.js .hero h1:not(.is-split){visibility:hidden}
.consent{align-items:center;gap:12px;min-height:44px;cursor:pointer;-webkit-tap-highlight-color:transparent}
.consent input[type="checkbox"]{-webkit-appearance:none;appearance:none;flex:0 0 22px;width:22px;height:22px;margin:0;padding:0;border:1.5px solid var(--line-strong);border-radius:4px;background:var(--ground);display:inline-grid;place-content:center;cursor:pointer;transition:background .15s,border-color .15s}
.consent input[type="checkbox"]::before{content:"";width:12px;height:12px;background:var(--accent-ink);clip-path:polygon(14% 44%,0 65%,50% 100%,100% 16%,80% 0,43% 62%);transform:scale(0);transition:transform .15s ease}
.consent input[type="checkbox"]:checked{background:var(--accent);border-color:var(--accent)}
.consent input[type="checkbox"]:checked::before{transform:scale(1)}
.consent input[type="checkbox"]:hover{border-color:var(--muted)}
.consent input[type="checkbox"]:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.consent.is-invalid input[type="checkbox"]{border-color:var(--danger)}
.consent.is-invalid{color:var(--ink)}