*{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{background:var(--navy-950); color:var(--ice-100); font-family:var(--font-body); line-height:1.6; overflow-x:hidden; -webkit-font-smoothing:antialiased;}
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  ul{list-style:none;}
  button{font-family:inherit;}
  @media (prefers-reduced-motion: reduce){*{animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; scroll-behavior:auto !important;}}
  .wrap{max-width:1240px;margin:0 auto;padding:0 32px;}
  @media(max-width:640px){.wrap{padding:0 20px;}}

  body::before{
    content:''; position:fixed; inset:0;
    background:
      radial-gradient(60% 45% at 15% 0%, rgba(27,75,120,.35), transparent 60%),
      radial-gradient(50% 40% at 100% 10%, rgba(47,191,160,.14), transparent 60%),
      linear-gradient(180deg, var(--navy-950), var(--navy-900) 40%, var(--navy-950));
    z-index:-2;
  }
  body::after{
    content:''; position:fixed; inset:0;
    background-image:linear-gradient(rgba(69,199,172,.26) 1px, transparent 1px), linear-gradient(90deg, rgba(69,199,172,.26) 1px, transparent 1px);
    background-size:64px 64px;
    mask-image:radial-gradient(60% 60% at 50% 0%, black, transparent 75%);
    z-index:-1; opacity:.9;
    animation:gridDrift 18s linear infinite;
  }
  @keyframes gridDrift{
    from{background-position:0 0, 0 0;}
    to{background-position:64px 64px, 64px 64px;}
  }
  @media (prefers-reduced-motion: reduce){
    body::after{animation:none;}
  }

  .grain{
    position:fixed; inset:-100px; z-index:60; pointer-events:none; opacity:.035; mix-blend-mode:overlay;
    background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  }

  /* scroll progress bar */
  .scroll-progress{position:fixed; top:0; left:0; height:3px; width:0%; z-index:300; background:linear-gradient(90deg,var(--teal-500),var(--teal-300)); box-shadow:0 0 12px rgba(79,226,196,.6); transition:width .12s ease-out;}

  /* animated aurora background */
  .aurora{position:fixed; inset:0; z-index:-3; overflow:hidden; pointer-events:none;}
  .aurora-blob{position:absolute; border-radius:50%; filter:blur(90px); opacity:.32; will-change:transform;}
  .aurora-1{width:520px; height:520px; top:-140px; left:-100px; background:radial-gradient(circle, rgba(27,75,120,.9), transparent 70%); animation:auroraDrift1 26s ease-in-out infinite;}
  .aurora-2{width:460px; height:460px; top:20%; right:-160px; background:radial-gradient(circle, rgba(47,191,160,.55), transparent 70%); animation:auroraDrift2 32s ease-in-out infinite;}
  .aurora-3{width:400px; height:400px; bottom:-120px; left:30%; background:radial-gradient(circle, rgba(79,226,196,.4), transparent 70%); animation:auroraDrift3 22s ease-in-out infinite;}
  @keyframes auroraDrift1{0%,100%{transform:translate(0,0) scale(1);} 50%{transform:translate(80px,60px) scale(1.15);}}
  @keyframes auroraDrift2{0%,100%{transform:translate(0,0) scale(1);} 50%{transform:translate(-70px,50px) scale(1.1);}}
  @keyframes auroraDrift3{0%,100%{transform:translate(0,0) scale(1);} 50%{transform:translate(50px,-40px) scale(1.2);}}
  @media (prefers-reduced-motion: reduce){.aurora-blob{animation:none;}}

  /* custom cursor (desktop / fine-pointer devices only) */
  .custom-cursor{position:fixed; top:0; left:0; width:16px; height:16px; border-radius:50%; border:1px solid var(--teal-400); background:rgba(79,226,196,.15); pointer-events:none; z-index:9999; transform:translate(-50%,-50%); transition:width .1s ease, height .1s ease, background .1s ease, border-color .1s ease, opacity .15s ease; opacity:0;}
  .custom-cursor.active{opacity:1;}
  .custom-cursor.hovering{width:38px; height:38px; background:rgba(79,226,196,.22); border-color:var(--teal-300);}
  body.has-custom-cursor, body.has-custom-cursor a, body.has-custom-cursor button, body.has-custom-cursor .mini-switch, body.has-custom-cursor .card, body.has-custom-cursor select{cursor:none !important;}

  /* 3D tilt on sensor cards */
  .card{transform-style:preserve-3d;}

  /* spotlight hover — mouse-follow radial highlight on cards */
  .card::before, .benefit::before, .extra-card::before, .room-map-card::before, .knx-compare-card::before{
    content:''; position:absolute; inset:0; z-index:0; pointer-events:none; opacity:0;
    background:radial-gradient(220px circle at var(--mx,50%) var(--my,50%), rgba(79,226,196,.16), transparent 60%);
    transition:opacity .35s ease;
  }
  .card:hover::before, .benefit:hover::before, .extra-card:hover::before, .room-map-card:hover::before{opacity:1;}
  .card > *, .benefit > *, .extra-card > *, .room-map-card > *, .knx-compare-card > *{position:relative; z-index:1;}

  /* ---------- BENEFITS ---------- */
  .benefits-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:26px;}
  @media(max-width:880px){.benefits-grid{grid-template-columns:repeat(2,1fr);}}
  @media(max-width:560px){.benefits-grid{grid-template-columns:1fr;}}
  .benefit{
    position:relative; background:var(--navy-900); border:1px solid var(--line); border-radius:20px; padding:30px;
    opacity:0; transform:translateY(20px); transition:opacity .5s ease, transform .5s ease, border-color .3s ease, box-shadow .3s ease;
  }
  .benefit.in{opacity:1; transform:translateY(0);}
  .benefit:hover{border-color:rgba(79,226,196,.4); box-shadow:0 20px 50px -25px rgba(47,191,160,.3); transform:translateY(-4px);}
  .benefit .num{
    display:inline-flex; align-items:center; justify-content:center; width:36px; height:36px; border-radius:50%;
    background:rgba(79,226,196,.08); border:1px solid rgba(79,226,196,.3); color:var(--teal-300);
    font-family:var(--font-mono); font-size:.76rem; margin-bottom:16px;
  }
  .benefit .ic{width:30px; height:30px; color:var(--teal-400); margin-bottom:14px; display:block;}
  .benefit .ic svg{width:100%; height:100%;}
  .benefit h3{font-family:var(--font-display); font-size:1.12rem; font-weight:600; margin-bottom:10px;}
  .benefit p{font-size:.88rem; color:var(--slate-400); margin:0;}

  /* ---------- CAPABILITIES (extra) ---------- */
  .extra-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:26px;}
  @media(max-width:880px){.extra-grid{grid-template-columns:repeat(2,1fr);}}
  @media(max-width:560px){.extra-grid{grid-template-columns:1fr;}}
  .extra-card{
    position:relative; background:var(--navy-900); border:1px solid var(--line); border-radius:20px; padding:28px;
    opacity:0; transform:translateY(20px); transition:opacity .5s ease, transform .5s ease, border-color .3s ease, box-shadow .3s ease;
  }
  .extra-card.in{opacity:1; transform:translateY(0);}
  .extra-card:hover{border-color:rgba(79,226,196,.4); box-shadow:0 20px 50px -25px rgba(47,191,160,.3); transform:translateY(-4px);}
  .extra-card .ic{
    width:52px; height:52px; border-radius:14px; background:rgba(79,226,196,.08); border:1px solid rgba(79,226,196,.22);
    display:flex; align-items:center; justify-content:center; color:var(--teal-400); margin-bottom:18px;
  }
  .extra-card .ic svg{width:24px; height:24px;}
  .extra-card h3{font-family:var(--font-display); font-size:1.08rem; font-weight:600; margin-bottom:10px;}
  .extra-card p{font-size:.87rem; color:var(--slate-400); margin:0;}

  /* ---------- HEADER ---------- */
  header{
    position:fixed; top:16px; left:50%; z-index:100;
    transform:translateX(-50%) translateZ(0); -webkit-transform:translateX(-50%) translateZ(0);
    backface-visibility:hidden; -webkit-backface-visibility:hidden;
    width:min(1180px, 94%); border-radius:100px;
    background:rgba(234,242,248,.055);
    backdrop-filter:blur(22px) saturate(180%); -webkit-backdrop-filter:blur(22px) saturate(180%);
    border:1px solid rgba(234,242,248,.14);
    box-shadow:0 10px 40px -8px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.08);
  }
  .nav{display:flex;align-items:center;justify-content:space-between; padding:6px 10px 6px 22px;}
  .logo{display:flex;align-items:center;gap:10px;}
  .logo img{height:76px;width:auto;}
  .foot-brand .logo img{height:92px;}
  .nav-links{display:flex;gap:30px;align-items:center;}
  .nav-links a{font-size:.88rem; font-weight:500; color:var(--slate-400); position:relative; padding:4px 0; transition:color .25s ease;}
  .nav-links a::after{content:''; position:absolute; left:0; bottom:0; width:0; height:1px; background:var(--teal-400); transition:width .3s ease;}
  .nav-links a:hover{color:var(--ice-100);}
  .nav-links a:hover::after{width:100%;}
  .nav-cta{font-family:var(--font-mono); font-size:.78rem; font-weight:500; padding:12px 22px; border-radius:100px; background:linear-gradient(135deg,var(--teal-500),var(--teal-400)); color:var(--navy-950); border:none; cursor:pointer; transition:box-shadow .3s ease, transform .2s ease;}
  .nav-cta:hover{box-shadow:var(--glow-teal); transform:translateY(-1px);}
  .burger{display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px; min-width:44px; min-height:44px; align-items:center; justify-content:center;}
  .burger span{width:22px;height:2px;background:var(--ice-100);display:block;}
  @media(max-width:880px){
    header{
      background:rgba(8,20,32,.92); backdrop-filter:none; -webkit-backdrop-filter:none;
    }
    .nav-links{position:fixed; top:88px; right:16px; left:16px; z-index:99; flex-direction:column; align-items:flex-start; gap:20px;
      background:rgba(8,20,32,.97); backdrop-filter:none; -webkit-backdrop-filter:none; border:1px solid rgba(234,242,248,.12); border-radius:20px; padding:26px;
      transform:translateY(-10px) translateZ(0); opacity:0; pointer-events:none; will-change:transform, opacity;
      transition:opacity .3s ease, transform .3s ease;}
    .nav-links.open{transform:translateY(0) translateZ(0); opacity:1; pointer-events:auto;}
    .burger{display:flex;}
    .nav-cta{display:none;}
  }

  section{position:relative; padding:110px 0;}
  .section-head{max-width:640px; margin-bottom:56px;}
  .kicker{font-family:var(--font-mono); font-size:.78rem; letter-spacing:.1em; text-transform:uppercase; color:var(--teal-400); margin-bottom:16px; display:block;}
  h2{font-family:var(--font-display); font-weight:600; font-size:clamp(1.8rem,3.4vw,2.6rem); letter-spacing:-.01em; margin-bottom:16px;}
  .section-head p{color:var(--slate-400); font-size:1.02rem;}

  .btn-primary{font-family:var(--font-mono); font-weight:500; font-size:.9rem; padding:16px 30px; border-radius:100px; border:none; cursor:pointer; background:linear-gradient(135deg,var(--teal-500),var(--teal-400)); color:var(--navy-950); transition:box-shadow .3s ease, transform .2s ease; display:inline-flex; align-items:center; gap:10px;}
  .btn-primary:hover{box-shadow:var(--glow-teal); transform:translateY(-2px);}
  .btn-ghost{font-family:var(--font-mono); font-weight:500; font-size:.9rem; padding:16px 28px; border-radius:100px; cursor:pointer; background:transparent; color:var(--ice-100); border:1px solid var(--line); transition:border-color .3s ease, background .3s ease;}
  .btn-ghost:hover{border-color:var(--teal-400); background:rgba(79,226,196,.06);}
  .btn-small{font-family:var(--font-mono); font-weight:500; font-size:.76rem; padding:9px 16px; border-radius:100px; cursor:pointer; background:transparent; color:var(--slate-400); border:1px solid var(--line); transition:all .25s ease;}
  .btn-small:hover{border-color:var(--teal-400); color:var(--teal-300); background:rgba(79,226,196,.06);}

  /* ---------- HERO ---------- */
  .hero{
    padding:180px 0 90px; overflow:hidden; position:relative;
    background:
      linear-gradient(100deg, rgba(6,15,28,0.55) 0%, rgba(6,15,28,0.55) 32%, rgba(6,15,28,.42) 62%, rgba(6,15,28,.18) 100%),
      url('/assets/images/media/zgrade-prikaz.webp') center right / cover no-repeat;
  }
  .hero-grid{display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:stretch;}
  @media(max-width:960px){
    .hero-grid{grid-template-columns:1fr;}
    .hero{background:none;}
    .hero::before{
      content:'';
      position:absolute; top:0; left:0; right:0; z-index:0;
      height:clamp(260px, 62vw, 420px);
      background-image: linear-gradient(0deg, var(--navy-950) 0%, transparent 45%),
        linear-gradient(180deg, rgba(6,15,28,0.55), rgba(6,15,28,0.55)),
        url('/assets/images/media/zgrade-prikaz.webp');
      background-size:cover;
      background-position:center;
      pointer-events:none;
    }
    .hero-grid{position:relative; z-index:1;}
  }
  .eyebrow{display:inline-flex; align-items:center; gap:10px; font-family:var(--font-mono); font-size:.78rem; letter-spacing:.08em; text-transform:uppercase; color:var(--teal-300); border:1px solid rgba(79,226,196,.3); background:rgba(47,191,160,.08); padding:8px 16px; border-radius:100px; margin-bottom:28px;}
  .eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--teal-400); box-shadow:0 0 8px var(--teal-400); animation:pulse 2s infinite;}
  @keyframes pulse{0%,100%{opacity:1;}50%{opacity:.35;}}
  h1{font-family:var(--font-display); font-weight:700; font-size:clamp(2.2rem, 4.4vw, 3.6rem); line-height:1.08; letter-spacing:-.01em; margin-bottom:22px; max-width:600px;}
  h1 .accent{background:linear-gradient(100deg,var(--teal-400),var(--teal-300) 60%); -webkit-background-clip:text; background-clip:text; color:transparent;}
  .hero p.lead{font-size:1.1rem; color:var(--slate-400); max-width:520px; margin-bottom:34px;}
  .hero-ctas{display:flex; gap:16px; flex-wrap:wrap; margin-bottom:46px;}
  .hero-stats{display:flex; gap:36px; flex-wrap:wrap;}
  .hero-text-col{display:flex; flex-direction:column; height:100%;}
  .sensor3d-wrap{position:relative; margin-top:32px; width:100%; flex:1; min-height:240px;}
  .sensor3d-mount{width:100%; height:100%; min-height:240px; cursor:grab;}
  .sensor3d-mount:active{cursor:grabbing;}
  .sensor3d-mount canvas{display:block; width:100% !important; height:100% !important;}
  .drag-hint-sensor{position:absolute; left:50%; bottom:6px; transform:translateX(-50%); font-family:var(--font-mono); font-size:.72rem; color:var(--slate-500); letter-spacing:.04em; opacity:.85; transition:opacity .4s ease; pointer-events:none; white-space:nowrap;}
  @media(max-width:960px){.sensor3d-wrap{min-height:220px;}}
  .stat b{display:block; font-family:var(--font-display); font-size:1.7rem; color:var(--ice-100);}
  .stat span{font-size:.8rem; color:var(--slate-500);}

  /* ---------- SENSOR DASHBOARD (signature element) ---------- */
  .sensor-panel{
    background:var(--navy-900); border:1px solid var(--line); border-radius:24px; padding:26px;
    box-shadow:0 30px 80px -35px rgba(0,0,0,.6);
  }
  .sensor-panel-head{display:flex; align-items:center; justify-content:space-between; margin-bottom:20px;}
  .sensor-panel-head h3{font-family:var(--font-display); font-size:1rem; font-weight:600;}
  .live-badge{display:inline-flex; align-items:center; gap:7px; font-family:var(--font-mono); font-size:.7rem; letter-spacing:.06em; text-transform:uppercase; color:var(--teal-300);}
  .live-dot{width:7px;height:7px;border-radius:50%;background:var(--teal-400); box-shadow:0 0 8px var(--teal-400); animation:pulse 1.6s infinite;}
  .sensor-grid{display:grid; grid-template-columns:1fr 1fr; gap:14px;}
  @media(max-width:520px){.sensor-grid{grid-template-columns:1fr;}}
  .sensor-tile{
    background:rgba(255,255,255,.025); border:1px solid var(--line); border-radius:16px; padding:16px;
    transition:border-color .3s ease, background .3s ease;
  }
  .sensor-tile.alert{border-color:rgba(255,107,74,.55); background:rgba(255,107,74,.08);}
  .sensor-tile.warn{border-color:rgba(255,179,71,.5); background:rgba(255,179,71,.07);}
  .sensor-tile-top{display:flex; align-items:center; gap:9px; margin-bottom:10px;}
  .sensor-tile .ic{width:26px; height:26px; flex-shrink:0; color:var(--teal-400); display:flex; align-items:center; justify-content:center;}
  .sensor-tile.alert .ic{color:var(--alert);}
  .sensor-tile.warn .ic{color:var(--amber);}
  .sensor-tile .ic svg{width:100%; height:100%;}
  .sensor-tile .label{font-family:var(--font-mono); font-size:.7rem; letter-spacing:.03em; color:var(--slate-500); text-transform:uppercase;}
  .sensor-tile .val{font-family:var(--font-display); font-size:1.3rem; font-weight:600; margin-bottom:2px; min-height:1.55rem;}
  .sensor-tile .status{font-size:.78rem; color:var(--slate-500);}
  .sensor-tile.alert .status{color:var(--alert);}
  .sensor-tile.warn .status{color:var(--amber);}
  .sensor-tile .reaction{display:block; font-family:var(--font-mono); font-size:.72rem; color:var(--teal-300); margin-top:9px; padding-top:9px; border-top:1px dashed var(--line);}
  .sensor-tile.warn .reaction{color:var(--amber);}
  .sensor-tile.alert .reaction{color:var(--alert);}
  .sensor-tile .toggle-row{display:flex; align-items:center; justify-content:space-between; margin-top:10px;}
  .mini-switch{position:relative; width:38px; height:22px; border-radius:100px; background:rgba(255,255,255,.08); border:1px solid var(--line); cursor:pointer; transition:background .25s ease; flex-shrink:0;}
  .mini-switch::after{content:''; position:absolute; top:2px; left:2px; width:16px; height:16px; border-radius:50%; background:var(--ice-100); transition:transform .25s ease;}
  .mini-switch.on{background:linear-gradient(135deg,#ff9a5a,#ff6b4a); border-color:transparent;}
  .mini-switch.on::after{transform:translateX(16px);}
  .sensor-panel-foot{margin-top:16px; font-size:.76rem; color:var(--slate-500); text-align:center;}

  /* ---------- SENSOR CARDS ---------- */
  .cards{display:grid; grid-template-columns:repeat(3,1fr); gap:26px; align-items:start;}
  @media(max-width:960px){.cards{grid-template-columns:repeat(2,1fr);}}
  @media(max-width:620px){.cards{grid-template-columns:1fr;}}
  .card{
    position:relative; border-radius:20px; overflow:hidden; cursor:pointer;
    background:var(--navy-900); border:1px solid var(--line);
    transition:transform .35s ease, border-color .35s ease, box-shadow .35s ease;
    opacity:0; transform:translateY(24px);
  }
  .card.in{opacity:1; transform:translateY(0);}
  .card:hover{transform:translateY(-6px); border-color:rgba(79,226,196,.4); box-shadow:0 20px 60px -20px rgba(47,191,160,.25);}
  .card .thumb{aspect-ratio:16/10; overflow:hidden; position:relative; background:var(--navy-800);}
  .card .thumb img{width:100%; height:100%; object-fit:cover; transition:transform .6s ease; filter:saturate(1.05) contrast(1.02);}
  .card:hover .thumb img{transform:scale(1.07);}
  .card .thumb::after{content:''; position:absolute; inset:0; background:linear-gradient(180deg, transparent 40%, rgba(6,15,28,0.55));}
  .card .thumb.icon-thumb{display:flex; align-items:center; justify-content:center; background:radial-gradient(120% 120% at 50% 20%, rgba(47,191,160,.16), transparent 65%), var(--navy-800);}
  .card .thumb.icon-thumb::after{display:none;}
  .card .thumb.icon-thumb .ic{width:74px; height:74px; color:var(--teal-400); opacity:.9;}
  .card .thumb.icon-thumb .ic svg{width:100%; height:100%;}
  .card .tag{
    position:absolute; top:14px; left:14px; z-index:2;
    font-family:var(--font-mono); font-size:.68rem; letter-spacing:.05em; text-transform:uppercase;
    padding:5px 11px; border-radius:100px; background:rgba(6,15,28,.65); backdrop-filter:blur(6px);
    border:1px solid rgba(79,226,196,.3); color:var(--teal-300);
  }
  .card .body{padding:22px 22px 26px;}
  .card h3{font-family:var(--font-display); font-size:1.08rem; font-weight:600; margin-bottom:8px;}
  .card p{font-size:.87rem; color:var(--slate-400); margin-bottom:16px;}
  .card .link{font-family:var(--font-mono); font-size:.8rem; color:var(--teal-400); display:inline-flex; align-items:center; gap:6px; background:none; border:none; cursor:pointer; padding:0;}
  .card .link svg{width:14px; height:14px; transition:transform .25s ease;}
  .card .link.open svg{transform:rotate(90deg);}
  .card-details{max-height:0; overflow:hidden; transition:max-height .4s ease;}
  .card-details.expanded{max-height:500px;}
  .card-details-inner{padding-top:16px; border-top:1px solid var(--line); margin-top:16px; display:flex; flex-direction:column; gap:14px;}
  .card-details h4{font-family:var(--font-mono); font-size:.72rem; letter-spacing:.06em; text-transform:uppercase; color:var(--teal-400); margin-bottom:5px;}
  .card-details p{font-size:.86rem; color:var(--slate-400); margin-bottom:0;}
  .card .cta-link{display:inline-flex; margin-top:4px; font-family:var(--font-mono); font-size:.78rem; color:var(--teal-300); border:1px solid rgba(79,226,196,.3); padding:8px 14px; border-radius:100px; transition:all .25s ease; cursor:pointer;}
  .card .cta-link:hover{background:rgba(79,226,196,.08); border-color:var(--teal-400);}

  /* ---------- ROOM MAP ---------- */
  .room-map-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:22px;}
  @media(max-width:880px){.room-map-grid{grid-template-columns:repeat(2,1fr);}}
  @media(max-width:560px){.room-map-grid{grid-template-columns:1fr;}}
  .room-map-card{
    background:var(--navy-900); border:1px solid var(--line); border-radius:18px; padding:24px;
    opacity:0; transform:translateY(20px); transition:all .5s ease, border-color .3s ease;
  }
  .room-map-card.in{opacity:1; transform:translateY(0);}
  .room-map-card:hover{border-color:rgba(79,226,196,.35);}
  .room-map-card h3{font-family:var(--font-display); font-size:1rem; font-weight:600; margin-bottom:12px;}
  .room-map-tags{display:flex; flex-wrap:wrap; gap:8px;}
  .room-map-tags span{font-family:var(--font-mono); font-size:.72rem; color:var(--teal-300); background:rgba(47,191,160,.08); border:1px solid rgba(79,226,196,.25); padding:5px 11px; border-radius:100px;}

  /* ---------- FAQ ---------- */
  .faq-list{max-width:760px;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{width:100%; text-align:left; background:none; border:none; color:var(--ice-100); font-family:var(--font-display); font-size:1rem; font-weight:600; padding:22px 0; cursor:pointer; display:flex; justify-content:space-between; align-items:center; gap:16px;}
  .faq-q svg{width:18px; height:18px; flex-shrink:0; color:var(--teal-400); transition:transform .3s ease;}
  .faq-item.open .faq-q svg{transform:rotate(45deg);}
  .faq-a{max-height:0; overflow:hidden; transition:max-height .35s ease;}
  .faq-a.expanded{max-height:180px;}
  .faq-a p{padding-bottom:22px; color:var(--slate-400); font-size:.92rem; max-width:640px;}

  /* mobile: instant open/close instead of animated — avoids jank on lower-powered devices */
  @media(max-width:780px){
    .card-details, .faq-a{transition:none;}
  }

  /* ---------- CTA / FORM ---------- */
  .cta-section{position:relative; border-radius:28px; padding:70px 60px; background:linear-gradient(135deg, var(--navy-700), var(--navy-800) 60%); border:1px solid rgba(79,226,196,.2); overflow:hidden;}
  @media(max-width:640px){.cta-section{padding:50px 24px;}}
  .cta-section::before{content:''; position:absolute; width:500px; height:500px; border-radius:50%; background:radial-gradient(circle, rgba(79,226,196,.25), transparent 70%); top:-200px; right:-150px;}
  .cta-grid{display:grid; grid-template-columns:1fr 1fr; gap:50px; position:relative; z-index:2;}
  @media(max-width:820px){.cta-grid{grid-template-columns:1fr;}}
  .cta-grid h2{margin-bottom:14px;}
  .cta-grid p{color:var(--slate-400); margin-bottom:26px;}
  .contact-row{display:flex; flex-direction:column; gap:14px; font-family:var(--font-mono); font-size:.9rem;}
  .contact-row a{display:flex; align-items:center; gap:10px; color:var(--teal-300);}
  .form-box{background:rgba(6,15,28,.4); border:1px solid var(--line); border-radius:18px; padding:26px; display:flex; flex-direction:column; gap:14px;}
  .form-box input, .form-box select, .form-box textarea{background:rgba(255,255,255,.03); border:1px solid var(--line); border-radius:10px; padding:13px 14px; color:var(--ice-100); font-family:var(--font-body); font-size:.9rem; width:100%;}
  .form-box select{cursor:pointer;}
  .form-box input:focus, .form-box select:focus, .form-box textarea:focus{outline:none; border-color:var(--teal-400);}
  .form-box select option{background:#fff; color:#0a1826;}
  .field-invalid{border-color:var(--alert) !important;}
  .field-error{display:block; color:var(--alert); font-size:.78rem; margin-top:-8px;}
  .form-box label{font-family:var(--font-mono); font-size:.72rem; color:var(--slate-500); text-transform:uppercase; letter-spacing:.05em; margin-bottom:-6px;}
  .form-actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:6px;}

  /* ---------- FOOTER ---------- */
  footer{border-top:1px solid var(--line); padding:70px 0 30px; margin-top:20px;}
  .foot-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; margin-bottom:60px;}
  @media(max-width:780px){.foot-grid{grid-template-columns:1fr 1fr;}}
  @media(max-width:480px){.foot-grid{grid-template-columns:1fr;}}
  .foot-brand p{color:var(--slate-500); font-size:.88rem; margin-top:14px; max-width:280px;}
  .foot-col h5{font-family:var(--font-mono); font-size:.76rem; text-transform:uppercase; letter-spacing:.08em; color:var(--slate-500); margin-bottom:16px;}
  .foot-col li{margin-bottom:11px; font-size:.9rem;}
  .foot-col a{color:var(--slate-400); transition:color .2s ease;}
  .foot-col a:hover{color:var(--teal-400);}
  .foot-social{display:flex; gap:12px; margin-top:18px;}
  .foot-social a{width:36px; height:36px; border-radius:50%; border:1px solid var(--line); display:flex; align-items:center; justify-content:center; transition:all .25s ease;}
  .foot-social a:hover{border-color:var(--teal-400); color:var(--teal-400); transform:translateY(-2px);}
  .foot-bottom{border-top:1px solid var(--line); padding-top:24px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:.8rem; color:var(--slate-500); font-family:var(--font-mono);}
/* ---------- KNX BUS VISUALIZATION ---------- */
  .knx-bus-panel{
    background:var(--navy-900); border:1px solid var(--line); border-radius:24px; padding:28px;
    box-shadow:0 30px 80px -35px rgba(0,0,0,.6);
    align-self:start;
  }
  .knx-bus-head{display:flex; align-items:center; justify-content:space-between; margin-bottom:8px;}
  .knx-bus-head h3{font-family:var(--font-display); font-size:1rem; font-weight:600;}
  .knx-bus-intro{font-size:.86rem; color:var(--slate-400); margin-bottom:6px; max-width:440px;}
  .knx-bus-line{
    position:relative; display:flex; justify-content:space-between; align-items:flex-start;
    padding:34px 8px 6px; overflow-x:auto; gap:18px; -webkit-overflow-scrolling:touch;
  }
  .knx-bus-line::before{
    content:''; position:absolute; left:34px; right:34px; top:52px; height:3px;
    background:linear-gradient(90deg, rgba(79,226,196,.12), rgba(79,226,196,.5), rgba(79,226,196,.12));
    border-radius:2px;
  }
  .knx-device{
    position:relative; z-index:2; display:flex; flex-direction:column; align-items:center; gap:9px;
    cursor:pointer; background:none; border:none; padding:0; width:64px; flex-shrink:0;
  }
  .knx-device .knx-ic{
    width:56px; height:56px; border-radius:50%; background:var(--navy-800); border:1px solid var(--line);
    display:flex; align-items:center; justify-content:center; color:var(--slate-400);
    transition:border-color .3s ease, color .3s ease, box-shadow .3s ease, background .3s ease;
  }
  .knx-device .knx-ic svg{width:24px; height:24px;}
  .knx-device .knx-label{font-family:var(--font-mono); font-size:.68rem; color:var(--slate-500); text-align:center; white-space:nowrap;}
  .knx-device.active .knx-ic{border-color:var(--teal-400); color:var(--teal-300); box-shadow:0 0 22px rgba(79,226,196,.45);}
  .knx-device.lit .knx-ic{background:rgba(79,226,196,.14); border-color:var(--teal-400); color:var(--teal-300);}
  .knx-telegram{
    position:absolute; top:50px; left:0; width:11px; height:11px; border-radius:50%;
    background:var(--teal-300); box-shadow:0 0 10px var(--teal-400), 0 0 22px rgba(79,226,196,.6);
    opacity:0; transform:translate(-50%,-50%); z-index:3; pointer-events:none;
  }
  .knx-bus-foot{margin-top:20px; font-size:.76rem; color:var(--slate-500); text-align:center; font-family:var(--font-mono); min-height:1.2em;}
  .knx-log{margin-top:22px; border-top:1px solid var(--line); padding-top:18px;}
  .knx-log-head{font-family:var(--font-mono); font-size:.72rem; text-transform:uppercase; letter-spacing:.06em; color:var(--slate-500); margin-bottom:14px;}
  .knx-log-list{display:flex; flex-direction:column; gap:11px; max-height:230px; overflow-y:auto;}
  .knx-log-list li{display:flex; gap:14px; font-size:.83rem; align-items:baseline; opacity:0; animation:knxLogIn .4s ease forwards;}
  .knx-log-time{font-family:var(--font-mono); color:var(--slate-500); font-size:.74rem; flex-shrink:0;}
  .knx-log-text{color:var(--slate-300);}
  @keyframes knxLogIn{from{opacity:0; transform:translateY(-4px);} to{opacity:1; transform:translateY(0);}}
  @media (prefers-reduced-motion: reduce){.knx-log-list li{animation:none; opacity:1;}}

  /* ---------- KNX PARTNER BADGE (hero, left column) ---------- */
  .knx-partner-badge{
    display:flex; align-items:center; gap:18px; background:var(--navy-900); border:1px solid var(--line);
    border-radius:18px; padding:18px 20px; max-width:460px;
  }
  .knx-partner-badge img{width:64px; height:64px; flex-shrink:0; object-fit:contain;}
  .knx-partner-badge p{font-size:.84rem; color:var(--slate-400); margin:0;}

  /* ---------- KNX VS WIRELESS COMPARISON ---------- */
  .knx-compare-grid{display:grid; grid-template-columns:1fr 1fr; gap:26px;}
  @media(max-width:780px){.knx-compare-grid{grid-template-columns:1fr;}}
  .knx-compare-card{
    background:var(--navy-900); border:1px solid var(--line); border-radius:20px; padding:30px;
    opacity:0; transform:translateY(20px); transition:opacity .5s ease, transform .5s ease, border-color .3s ease;
  }
  .knx-compare-card.in{opacity:1; transform:translateY(0);}
  .knx-compare-card:hover{border-color:rgba(79,226,196,.35);}
  .knx-compare-card h3{font-family:var(--font-display); font-size:1.3rem; font-weight:600; margin:8px 0 18px;}
  .knx-compare-card ul{display:flex; flex-direction:column; gap:12px;}
  .knx-compare-card li{font-size:.9rem; color:var(--slate-400); padding-left:22px; position:relative;}
  .knx-compare-card li::before{content:'—'; position:absolute; left:0; color:var(--teal-400);}
/* ---------- RETROFIT FLIP CARD (hero signature element) ---------- */
  .retrofit-flip-wrap{display:flex; flex-direction:column; align-items:center; gap:18px;}
  .retrofit-flip-btn{width:100%; max-width:340px;}
  .retrofit-flip-card{width:100%; max-width:340px; aspect-ratio:1/1; perspective:1400px;}
  .retrofit-flip-inner{
    position:relative; width:100%; height:100%; transition:transform .8s cubic-bezier(.4,.2,.2,1); transform-style:preserve-3d;
  }
  .retrofit-flip-card.flipped .retrofit-flip-inner{transform:rotateY(180deg);}
  .retrofit-flip-face{
    position:absolute; inset:0; backface-visibility:hidden; -webkit-backface-visibility:hidden;
    background:var(--navy-900); border:1px solid var(--line); border-radius:24px;
    display:flex; flex-direction:column; align-items:center; justify-content:center; gap:18px; padding:30px; text-align:center;
    box-shadow:0 30px 80px -35px rgba(0,0,0,.6);
  }
  .retrofit-flip-back{transform:rotateY(180deg);}
  .retrofit-flip-face .rf-ic{width:64px; height:64px; color:var(--teal-400);}
  .retrofit-flip-face .rf-ic svg{width:100%; height:100%;}
  .retrofit-flip-face h4{font-family:var(--font-display); font-size:1.1rem; font-weight:600;}
  .retrofit-flip-face p{font-size:.86rem; color:var(--slate-400); max-width:240px;}
  .retrofit-flip-tags{display:flex; flex-wrap:wrap; gap:8px; justify-content:center; margin-top:4px;}
  .retrofit-flip-tags span{font-family:var(--font-mono); font-size:.7rem; color:var(--teal-300); background:rgba(47,191,160,.08); border:1px solid rgba(79,226,196,.25); padding:5px 11px; border-radius:100px;}
  @media (prefers-reduced-motion: reduce){.retrofit-flip-inner{transition:none;}}

  /* ---------- PROCESS STEPS ---------- */
  .process-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:26px;}
  @media(max-width:780px){.process-grid{grid-template-columns:1fr;}}
  .process-step{
    position:relative; background:var(--navy-900); border:1px solid var(--line); border-radius:20px; padding:30px;
    opacity:0; transform:translateY(20px); transition:opacity .5s ease, transform .5s ease, border-color .3s ease, box-shadow .3s ease;
  }
  .process-step.in{opacity:1; transform:translateY(0);}
  .process-step:hover{border-color:rgba(79,226,196,.4); box-shadow:0 20px 50px -25px rgba(47,191,160,.3); transform:translateY(-4px);}
  .process-step .num{
    display:inline-flex; align-items:center; justify-content:center; width:36px; height:36px; border-radius:50%;
    background:rgba(79,226,196,.08); border:1px solid rgba(79,226,196,.3); color:var(--teal-300);
    font-family:var(--font-mono); font-size:.76rem; margin-bottom:16px;
  }
  .process-step h3{font-family:var(--font-display); font-size:1.1rem; font-weight:600; margin-bottom:10px;}
  .process-step p{font-size:.88rem; color:var(--slate-400); margin:0;}

  /* ---------- COMPARE (retrofit vs KNX) ---------- */
  .compare-grid{display:grid; grid-template-columns:1fr 1fr; gap:26px;}
  @media(max-width:780px){.compare-grid{grid-template-columns:1fr;}}
  .compare-card{
    background:var(--navy-900); border:1px solid var(--line); border-radius:20px; padding:30px;
    opacity:0; transform:translateY(20px); transition:opacity .5s ease, transform .5s ease, border-color .3s ease;
  }
  .compare-card.in{opacity:1; transform:translateY(0);}
  .compare-card:hover{border-color:rgba(79,226,196,.35);}
  .compare-card h3{font-family:var(--font-display); font-size:1.3rem; font-weight:600; margin:8px 0 18px;}
  .compare-card ul{display:flex; flex-direction:column; gap:12px; margin-bottom:20px;}
  .compare-card li{font-size:.9rem; color:var(--slate-400); padding-left:22px; position:relative;}
  .compare-card li::before{content:'—'; position:absolute; left:0; color:var(--teal-400);}

  /* extend shared spotlight hover system to new component classes on this page */
  .process-step::before, .compare-card::before{
    content:''; position:absolute; inset:0; z-index:0; pointer-events:none; opacity:0;
    background:radial-gradient(220px circle at var(--mx,50%) var(--my,50%), rgba(79,226,196,.16), transparent 60%);
    transition:opacity .35s ease; border-radius:inherit;
  }
  .process-step:hover::before, .compare-card:hover::before{opacity:1;}
  .process-step > *, .compare-card > *{position:relative; z-index:1;}
/* ---------- SMART LOCK DEMO (signature element) ---------- */
  .lock-panel{
    background:rgba(234,242,248,.045);
    backdrop-filter:blur(20px) saturate(160%); -webkit-backdrop-filter:blur(20px) saturate(160%);
    border:1px solid rgba(234,242,248,.14); border-radius:24px; padding:28px;
    box-shadow:0 30px 80px -35px rgba(0,0,0,.6), inset 0 1px 0 rgba(255,255,255,.08);
    align-self:start;
  }
  .lock-panel-head{display:flex; align-items:center; justify-content:space-between; margin-bottom:22px;}
  .lock-panel-head h3{font-family:var(--font-display); font-size:1rem; font-weight:600;}

  .lock-demo-grid{display:grid; grid-template-columns:.85fr 1.15fr; gap:24px; align-items:center;}
  @media(max-width:520px){.lock-demo-grid{grid-template-columns:1fr;}}

  .lock-visual{display:flex; flex-direction:column; align-items:center; gap:14px;}
  .lock-door{width:84px; height:84px; color:var(--slate-400); transition:color .4s ease;}
  .lock-door svg{width:100%; height:100%;}
  #lockShackle{transform-origin:12px 8px; transition:transform .45s cubic-bezier(.4,1.4,.6,1);}
  .lock-door.unlocked{color:var(--teal-400);}
  .lock-door.unlocked #lockShackle{transform:translateX(3px) rotate(-28deg);}
  .lock-status{font-family:var(--font-mono); font-size:.8rem; color:var(--slate-400); letter-spacing:.03em;}
  .lock-door.unlocked ~ .lock-status, .lock-status.is-unlocked{color:var(--teal-300);}

  .lock-keypad{display:flex; flex-direction:column; gap:12px;}
  .lock-display{
    font-family:var(--font-mono); font-size:1.3rem; letter-spacing:.35em; text-align:center;
    background:rgba(255,255,255,.03); border:1px solid var(--line); border-radius:12px; padding:12px; color:var(--ice-100);
  }
  .lock-keys{display:grid; grid-template-columns:repeat(3,1fr); gap:8px;}
  .lock-key{
    font-family:var(--font-mono); font-size:.95rem; padding:11px 0; border-radius:10px; cursor:pointer;
    background:rgba(255,255,255,.03); border:1px solid var(--line); color:var(--ice-100);
    transition:border-color .2s ease, background .2s ease;
  }
  .lock-key:hover{border-color:rgba(79,226,196,.4); background:rgba(79,226,196,.06);}
  .lock-key.lock-key-wide{font-size:.72rem; color:var(--slate-400);}

  .lock-guest-btn{width:100%; margin-top:20px;}

  .lock-log{margin-top:22px; border-top:1px solid var(--line); padding-top:18px;}
  .lock-log-head{font-family:var(--font-mono); font-size:.72rem; text-transform:uppercase; letter-spacing:.06em; color:var(--slate-500); margin-bottom:14px;}
  .lock-log-list{display:flex; flex-direction:column; gap:11px; max-height:200px; overflow-y:auto;}
  .lock-log-list li{display:flex; gap:14px; font-size:.82rem; align-items:baseline; opacity:0; animation:lockLogIn .4s ease forwards;}
  .lock-log-time{font-family:var(--font-mono); color:var(--slate-500); font-size:.74rem; flex-shrink:0;}
  .lock-log-text{color:var(--slate-300);}
  @keyframes lockLogIn{from{opacity:0; transform:translateY(-4px);} to{opacity:1; transform:translateY(0);}}
  @media (prefers-reduced-motion: reduce){.lock-log-list li{animation:none; opacity:1;} #lockShackle{transition:none;}}
/* ---------- COOKIE CONSENT + PRIVACY MODAL ---------- */
  .cookie-banner{
    position:fixed; left:16px; right:16px; bottom:16px; z-index:500; max-width:760px; margin:0 auto;
    background:rgba(8,20,32,.97); border:1px solid rgba(234,242,248,.14); border-radius:20px; padding:24px;
    box-shadow:0 30px 80px -20px rgba(0,0,0,.7);
    transform:translateY(140%); opacity:0; transition:transform .4s ease, opacity .4s ease; pointer-events:none;
  }
  .cookie-banner.visible{transform:translateY(0); opacity:1; pointer-events:auto;}
  .cookie-banner p{font-size:.86rem; color:var(--slate-400); margin-bottom:16px; line-height:1.55;}
  .cookie-banner p a{color:var(--teal-300); text-decoration:underline;}
  .cookie-banner-actions{display:flex; gap:10px; flex-wrap:wrap;}
  .cookie-banner-actions button{font-size:.82rem; padding:11px 18px;}
  @media(max-width:480px){.cookie-banner-actions button{flex:1 1 auto;}}

  .modal-overlay{
    position:fixed; inset:0; z-index:600; background:rgba(6,15,28,.75); backdrop-filter:blur(6px);
    display:flex; align-items:center; justify-content:center; padding:20px;
    opacity:0; pointer-events:none; transition:opacity .3s ease;
  }
  .modal-overlay.visible{opacity:1; pointer-events:auto;}
  .modal-box{
    background:var(--navy-900); border:1px solid var(--line); border-radius:22px; padding:34px;
    max-width:640px; width:100%; max-height:82vh; overflow-y:auto;
    transform:translateY(16px); transition:transform .3s ease;
  }
  .modal-overlay.visible .modal-box{transform:translateY(0);}
  .modal-box h3{font-family:var(--font-display); font-size:1.3rem; font-weight:600; margin-bottom:6px;}
  .modal-box .modal-sub{font-size:.85rem; color:var(--slate-500); margin-bottom:22px;}
  .modal-box h4{font-family:var(--font-display); font-size:.98rem; font-weight:600; margin:20px 0 8px;}
  .modal-box p, .modal-box li{font-size:.87rem; color:var(--slate-400); line-height:1.6; margin-bottom:8px;}
  .modal-box ul{padding-left:18px; margin-bottom:8px;}
  .modal-close{
    position:absolute; top:18px; right:18px; width:32px; height:32px; border-radius:50%; cursor:pointer;
    background:rgba(255,255,255,.04); border:1px solid var(--line); color:var(--ice-100);
    display:flex; align-items:center; justify-content:center; font-size:1rem;
  }
  .modal-box{position:relative;}

  .cookie-category{display:flex; align-items:flex-start; justify-content:space-between; gap:16px; padding:16px 0; border-bottom:1px solid var(--line);}
  .cookie-category:last-of-type{border-bottom:none;}
  .cookie-category-info h4{margin:0 0 4px;}
  .cookie-category-info p{margin:0; font-size:.82rem;}
  .toggle-switch{position:relative; width:44px; height:24px; flex-shrink:0; margin-top:2px;}
  .toggle-switch input{opacity:0; width:0; height:0; position:absolute;}
  .toggle-switch label{
    position:absolute; inset:0; background:rgba(255,255,255,.08); border-radius:100px; cursor:pointer; transition:background .25s ease;
  }
  .toggle-switch label::after{
    content:''; position:absolute; top:3px; left:3px; width:18px; height:18px; border-radius:50%; background:var(--slate-400);
    transition:transform .25s ease, background .25s ease;
  }
  .toggle-switch input:checked + label{background:rgba(69,199,172,.35);}
  .toggle-switch input:checked + label::after{transform:translateX(20px); background:var(--teal-400);}
  .toggle-switch input:disabled + label{opacity:.5; cursor:not-allowed;}

  .modal-actions{display:flex; gap:10px; flex-wrap:wrap; margin-top:24px;}
  .modal-actions button{font-size:.85rem; padding:13px 22px;}

  .consent-checkbox-row{display:flex; align-items:flex-start; gap:10px; margin-top:2px;}
  .consent-checkbox-row input{width:17px; height:17px; margin-top:2px; accent-color:var(--teal-400); flex-shrink:0; cursor:pointer;}
  .consent-checkbox-row label{font-size:.78rem; color:var(--slate-400); line-height:1.5; cursor:pointer;}
  .consent-checkbox-row label a{color:var(--teal-300); text-decoration:underline;}
/* ---------- MULTI-ROOM AUDIO PANEL (signature element) ---------- */
  .audio-panel{
    background:rgba(234,242,248,.045);
    backdrop-filter:blur(20px) saturate(160%); -webkit-backdrop-filter:blur(20px) saturate(160%);
    border:1px solid rgba(234,242,248,.14); border-radius:24px; padding:28px;
    box-shadow:0 30px 80px -35px rgba(0,0,0,.6), inset 0 1px 0 rgba(255,255,255,.08);
  }
  .audio-panel-head{display:flex; align-items:center; justify-content:space-between; margin-bottom:20px;}
  .audio-panel-head h3{font-family:var(--font-display); font-size:1rem; font-weight:600;}

  .audio-rooms{display:flex; flex-direction:column; gap:12px; margin-bottom:20px;}
  .audio-room{
    display:flex; align-items:center; justify-content:space-between; gap:14px;
    background:rgba(255,255,255,.02); border:1px solid var(--line); border-radius:14px; padding:14px 16px;
    transition:border-color .3s ease;
  }
  .audio-room.playing{border-color:rgba(69,199,172,.35);}
  .audio-room-info{display:flex; flex-direction:column; gap:4px; min-width:0;}
  .audio-room-name{font-family:var(--font-display); font-size:.92rem; font-weight:600; display:flex; align-items:center; gap:8px;}
  .audio-room-track{font-family:var(--font-mono); font-size:.72rem; color:var(--slate-500); white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
  .audio-room.playing .audio-room-track{color:var(--teal-300);}

  .audio-eq{display:none; align-items:flex-end; gap:2px; height:12px;}
  .audio-room.playing .audio-eq{display:flex;}
  .audio-eq span{width:3px; background:var(--teal-400); border-radius:1px; animation:audioEq 1s ease-in-out infinite;}
  .audio-eq span:nth-child(1){height:40%; animation-delay:0s;}
  .audio-eq span:nth-child(2){height:100%; animation-delay:.2s;}
  .audio-eq span:nth-child(3){height:65%; animation-delay:.4s;}
  @keyframes audioEq{0%,100%{transform:scaleY(.4);} 50%{transform:scaleY(1);}}
  @media (prefers-reduced-motion: reduce){.audio-eq span{animation:none;}}

  .audio-room-controls{display:flex; align-items:center; gap:12px; flex-shrink:0;}
  .audio-play-btn{
    width:36px; height:36px; border-radius:50%; cursor:pointer; flex-shrink:0;
    background:rgba(255,255,255,.04); border:1px solid var(--line); color:var(--ice-100);
    display:flex; align-items:center; justify-content:center; font-size:.85rem;
    transition:border-color .2s ease, background .2s ease;
  }
  .audio-play-btn:hover{border-color:rgba(69,199,172,.4); background:rgba(69,199,172,.08);}
  .audio-room.playing .audio-play-btn{background:var(--teal-400); border-color:var(--teal-400); color:var(--navy-950);}
  .audio-volume{width:70px; accent-color:var(--teal-400); cursor:pointer;}
  @media(max-width:420px){.audio-volume{width:44px;}}

  .audio-sync-btn{width:100%;}
/* ---------- VERTICAL CATEGORY PAGE ---------- */
  .vert-panel{
    background:rgba(234,242,248,.045);
    backdrop-filter:blur(20px) saturate(160%); -webkit-backdrop-filter:blur(20px) saturate(160%);
    border:1px solid rgba(234,242,248,.14); border-radius:24px; padding:32px;
    box-shadow:0 30px 80px -35px rgba(0,0,0,.6), inset 0 1px 0 rgba(255,255,255,.08);
  }
  .vert-panel h3{font-family:var(--font-display); font-size:1.05rem; font-weight:600; margin-bottom:8px;}
  .vert-panel-sub{font-size:.86rem; color:var(--slate-400); margin-bottom:22px;}
  .vert-pills{display:flex; flex-wrap:wrap; gap:9px; margin-bottom:22px;}
  .vert-pill{
    font-family:var(--font-mono); font-size:.8rem; padding:10px 18px; border-radius:100px; cursor:pointer;
    background:rgba(255,255,255,.03); border:1px solid var(--line); color:var(--slate-400);
    transition:all .25s ease;
  }
  .vert-pill:hover{border-color:rgba(69,199,172,.4); color:var(--ice-100);}
  .vert-pill.active{border-color:var(--teal-400); color:var(--navy-950); background:var(--teal-400); font-weight:500;}
  .vert-result{
    font-size:.9rem; color:var(--slate-300); line-height:1.6; min-height:60px;
    padding-top:20px; border-top:1px solid var(--line);
  }
  .vert-result strong{color:var(--teal-300);}

  /* solution cards linking out to product pages */
  .solution-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
  @media(max-width:880px){.solution-grid{grid-template-columns:repeat(2,1fr);}}
  @media(max-width:560px){.solution-grid{grid-template-columns:1fr;}}
  .solution-card{
    display:block; position:relative; background:rgba(234,242,248,.045);
    backdrop-filter:blur(18px) saturate(160%); -webkit-backdrop-filter:blur(18px) saturate(160%);
    border:1px solid rgba(234,242,248,.14); border-radius:20px; padding:28px;
    opacity:0; transform:translateY(20px); transition:opacity .5s ease, transform .5s ease, border-color .3s ease, box-shadow .3s ease;
  }
  .solution-card.in{opacity:1; transform:translateY(0);}
  .solution-card:hover{border-color:rgba(69,199,172,.35); box-shadow:0 20px 50px -25px rgba(41,168,141,.3); transform:translateY(-4px);}
  .solution-card .ic{width:44px; height:44px; border-radius:12px; background:rgba(69,199,172,.08); border:1px solid rgba(69,199,172,.22); display:flex; align-items:center; justify-content:center; color:var(--teal-400); margin-bottom:16px;}
  .solution-card .ic svg{width:22px; height:22px;}
  .solution-card h4{font-family:var(--font-display); font-size:1.02rem; font-weight:600; margin-bottom:8px;}
  .solution-card p{font-size:.86rem; color:var(--slate-400); margin-bottom:14px;}
  .solution-card .solution-link{font-family:var(--font-mono); font-size:.78rem; color:var(--teal-300); display:inline-flex; align-items:center; gap:6px;}
  .solution-card .solution-link svg{width:14px; height:14px; transition:transform .2s ease;}
  .solution-card:hover .solution-link svg{transform:translateX(3px);}

  /* ---------- PROTOCOLS / MARQUEE ---------- */
  .protocols{border-top:1px solid var(--line); padding:80px 0;}
  .protocols .section-head{margin-bottom:40px;}
  .marquee{
    position:relative; overflow:hidden;
    -webkit-mask-image:linear-gradient(90deg, transparent, black 10%, black 90%, transparent); mask-image:linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
    background:rgba(234,242,248,.055);
    backdrop-filter:blur(18px) saturate(160%); -webkit-backdrop-filter:blur(18px) saturate(160%);
    border-top:1px solid rgba(234,242,248,.12); border-bottom:1px solid rgba(234,242,248,.12);
    padding:28px 0;
  }
  .marquee-track{display:flex; gap:64px; width:max-content; animation:scroll 28s linear infinite;}
  .marquee:hover .marquee-track{animation-play-state:paused;}
  @keyframes scroll{from{transform:translateX(0);} to{transform:translateX(-50%);}}
  .marquee-track img{height:34px; width:auto; object-fit:contain; opacity:1; transition:opacity .3s ease, transform .3s ease;}
  .marquee-track img:hover{transform:scale(1.06);}

  /* ---------- HEADING LETTER EFFECT (subtle shimmer sweep) ---------- */
  h1, h2{
    background-image:linear-gradient(100deg, var(--ice-100) 42%, var(--teal-500) 50%, var(--ice-100) 58%);
    background-size:240% 100%;
    -webkit-background-clip:text; background-clip:text; color:transparent;
    animation:heading-shimmer 7s ease-in-out infinite;
  }
  h1 .accent{
    animation:heading-shimmer 7s ease-in-out infinite;
    animation-delay:.4s;
  }
  @keyframes heading-shimmer{
    0%{background-position:220% 0;}
    50%{background-position:0% 0;}
    100%{background-position:-220% 0;}
  }
  @media (prefers-reduced-motion: reduce){
    h1, h2, h1 .accent{animation:none; background-position:0 0;}
  }