:root{
    --bg:#EEF0EF;
    --bg-raised:#E2E4E3;
    --line:#D2D5D4;
    --ink:#1B1D1F;
    --muted:#5B5F61;
    --red:#D8323D;
    --red-deep:#A6222B;
    --red-bright:#EA4753;
    --dark-panel:#17181B;
    --dark-panel-line:#2C2F34;
    --dark-panel-text:#F2F1EE;
    --dark-panel-muted:#A0A5AB;
    --radius:6px;
    --maxw:1180px;
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important;}
  }

  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:'IBM Plex Sans', sans-serif;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    position:relative;
  }

  body::before{
    content:"";
    position:fixed;
    inset:0;
    z-index:-1;
    pointer-events:none;
    background:linear-gradient(115deg,
      transparent 0%, transparent 12%,
      rgba(27,29,31,0.045) 12%, rgba(27,29,31,0.045) 26%,
      transparent 26%, transparent 58%,
      rgba(216,50,61,0.05) 58%, rgba(216,50,61,0.05) 70%,
      transparent 70%, transparent 100%);
  }

  h1,h2,h3{
    font-family:'Archivo', sans-serif;
    color:var(--ink);
    margin:0;
    line-height:1.15;
  }

  p{margin:0;}
  a{color:inherit; text-decoration:none;}
  .mono{font-family:'IBM Plex Mono', monospace;}

  .wrap{
    max-width:var(--maxw);
    margin:0 auto;
    padding:0 28px;
  }

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

  .panel{background:var(--bg-raised);}

  /* recurring diagonal-bar mark before every section heading */
  section:not(.hero) .section-head h2::before,
  .about h2::before,
  .contact-info h2::before{
    content:"";
    display:inline-block;
    width:34px;
    height:0.85em;
    margin-right:14px;
    vertical-align:-0.08em;
    border-radius:2px;
    background:repeating-linear-gradient(115deg,
      var(--ink) 0px, var(--ink) 6px,
      transparent 6px 9px,
      var(--red) 9px 13px,
      transparent 13px 16px);
  }

  /* ---------- NAV ---------- */
  header{
    position:fixed;
    top:0; left:0; right:0;
    z-index:100;
    background:rgba(238,240,239,0.92);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  nav.wrap{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:72px;
  }
  .logo{
    font-family:'Archivo', sans-serif;
    font-weight:700;
    font-size:1.25rem;
    letter-spacing:-0.01em;
    color:var(--ink);
    display:flex;
    align-items:center;
    gap:11px;
  }
  .logo .dot{color:var(--red);}
  .logo-mark{
    width:28px;
    height:28px;
    flex-shrink:0;
  }
  .logo-text{
    display:flex;
    align-items:baseline;
    gap:0;
  }
  .navlinks{
    display:flex;
    align-items:center;
    gap:34px;
  }
  .navlinks .btn-primary{
    display:none;
  }
  .navlinks a.navlink{
    font-size:0.95rem;
    color:var(--muted);
    padding:4px 0;
    border-bottom:2px solid transparent;
    transition:border-color .15s ease, color .15s ease;
  }
  .navlinks a.navlink:hover{
    color:var(--ink);
    border-color:var(--red);
  }
  .navright{
    display:flex;
    align-items:center;
    gap:18px;
  }
  .langtoggle{
    display:flex;
    border:1px solid var(--line);
    border-radius:999px;
    overflow:hidden;
    font-family:'IBM Plex Mono', monospace;
    font-size:0.78rem;
  }
  .langtoggle button{
    background:transparent;
    border:none;
    padding:6px 12px;
    cursor:pointer;
    color:var(--muted);
    font-family:inherit;
    font-size:inherit;
  }
  .langtoggle button.active{
    background:var(--red);
    color:#fff;
  }
  .btn{
    display:inline-block;
    padding:11px 22px;
    border-radius:var(--radius);
    font-weight:600;
    font-size:0.95rem;
    cursor:pointer;
    border:1.5px solid transparent;
    transition:transform .12s ease, background .15s ease, color .15s ease, border-color .15s ease;
    white-space:nowrap;
  }
  .btn-primary{
    background:var(--red);
    color:#fff;
  }
  .btn-primary:hover{
    background:var(--red-deep);
  }
  .btn-ghost{
    background:transparent;
    border-color:var(--line);
    color:var(--ink);
  }
  .btn-ghost:hover{
    border-color:var(--red);
    color:var(--red-deep);
  }
  .hamburger{
    display:none;
    background:none;
    border:none;
    cursor:pointer;
    padding:6px;
  }
  .hamburger span{
    display:block;
    width:22px;
    height:2px;
    background:var(--ink);
    margin:5px 0;
  }

  /* ---------- HERO ---------- */
  .hero{
    padding:158px 0 90px;
    position:relative;
    overflow:hidden;
  }
  .hero .wrap{
    display:grid;
    grid-template-columns:1.05fr 0.85fr;
    gap:56px;
    align-items:center;
    position:relative;
    z-index:2;
  }
  .hero h1{
    font-size:clamp(2.3rem, 4.4vw, 3.6rem);
    font-weight:700;
    letter-spacing:-0.015em;
    max-width:14ch;
  }
  .hero .sub{
    margin-top:22px;
    font-size:1.1rem;
    color:var(--muted);
    max-width:46ch;
  }
  .hero .ctas{
    margin-top:34px;
    display:flex;
    gap:16px;
    flex-wrap:wrap;
  }
  .hero-art{
    display:flex;
    justify-content:center;
  }
  .hero-diagram{
    position:relative;
    width:100%;
    max-width:440px;
    margin:0 auto;
  }
  .hero-diagram svg.bg{
    width:100%;
    height:auto;
    display:block;
    filter:drop-shadow(0 18px 34px rgba(23,24,27,0.18));
  }
  .pulse-ring{
    animation:pulse-hub 9s ease-out infinite;
    transform-origin:center;
  }
  @keyframes pulse-hub{
    0%{ opacity:0.9; transform:scale(1);}
    8.9%{ opacity:0; transform:scale(1.9);}
    100%{ opacity:0; transform:scale(1.9);}
  }

  .hero-node .glow{
    position:absolute;
    inset:-7px;
    border-radius:50%;
    border:2px solid var(--red);
    opacity:0;
    transform:scale(0.8);
    pointer-events:none;
  }
  .hero-node[data-i="1"] .glow{ animation:n1pulse 9s ease-out infinite; }
  .hero-node[data-i="2"] .glow{ animation:n2pulse 9s ease-out infinite; }
  .hero-node[data-i="3"] .glow{ animation:n3pulse 9s ease-out infinite; }
  .hero-node[data-i="4"] .glow{ animation:n4pulse 9s ease-out infinite; }
  .hero-node[data-i="5"] .glow{ animation:n5pulse 9s ease-out infinite; }
  .hero-node[data-i="6"] .glow{ animation:n6pulse 9s ease-out infinite; }
  .hero-node[data-i="7"] .glow{ animation:n7pulse 9s ease-out infinite; }
  .hero-node[data-i="8"] .glow{ animation:n8pulse 9s ease-out infinite; }
  .hero-node[data-i="9"] .glow{ animation:n9pulse 9s ease-out infinite; }

  @keyframes n1pulse{ 0%,7.78%{opacity:0; transform:scale(0.8);} 9.44%{opacity:0.85; transform:scale(1);} 12.78%,100%{opacity:0; transform:scale(1.3);} }
  @keyframes n2pulse{ 0%,12.78%{opacity:0; transform:scale(0.8);} 14.44%{opacity:0.85; transform:scale(1);} 17.78%,100%{opacity:0; transform:scale(1.3);} }
  @keyframes n3pulse{ 0%,17.78%{opacity:0; transform:scale(0.8);} 19.44%{opacity:0.85; transform:scale(1);} 22.78%,100%{opacity:0; transform:scale(1.3);} }
  @keyframes n4pulse{ 0%,22.78%{opacity:0; transform:scale(0.8);} 24.44%{opacity:0.85; transform:scale(1);} 27.78%,100%{opacity:0; transform:scale(1.3);} }
  @keyframes n5pulse{ 0%,27.78%{opacity:0; transform:scale(0.8);} 29.44%{opacity:0.85; transform:scale(1);} 32.78%,100%{opacity:0; transform:scale(1.3);} }
  @keyframes n6pulse{ 0%,32.78%{opacity:0; transform:scale(0.8);} 34.44%{opacity:0.85; transform:scale(1);} 37.78%,100%{opacity:0; transform:scale(1.3);} }
  @keyframes n7pulse{ 0%,37.78%{opacity:0; transform:scale(0.8);} 39.44%{opacity:0.85; transform:scale(1);} 42.78%,100%{opacity:0; transform:scale(1.3);} }
  @keyframes n8pulse{ 0%,42.78%{opacity:0; transform:scale(0.8);} 44.44%{opacity:0.85; transform:scale(1);} 47.78%,100%{opacity:0; transform:scale(1.3);} }
  @keyframes n9pulse{ 0%,47.78%{opacity:0; transform:scale(0.8);} 49.44%{opacity:0.85; transform:scale(1);} 52.78%,100%{opacity:0; transform:scale(1.3);} }

  .hero-node{
    position:absolute;
    width:42px;
    height:42px;
    transform:translate(-50%,-50%) scale(1);
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:50%;
    background:var(--bg);
    border:1.5px solid var(--ink);
    color:var(--ink);
    text-decoration:none;
    transition:transform .18s ease, border-color .18s ease, color .18s ease, box-shadow .18s ease;
  }
  .hero-node svg{
    width:19px;
    height:19px;
    fill:none;
    stroke:currentColor;
    stroke-width:1.6;
    stroke-linecap:round;
    stroke-linejoin:round;
  }
  .hero-node:hover,
  .hero-node:focus-visible{
    transform:translate(-50%,-50%) scale(1.18);
    border-color:var(--red);
    color:var(--red);
    box-shadow:0 8px 18px rgba(216,50,61,0.28);
  }
  .hero-node .label{
    position:absolute;
    left:50%;
    bottom:100%;
    margin-bottom:11px;
    transform:translateX(-50%) translateY(6px);
    background:var(--ink);
    color:#fff;
    font-family:'IBM Plex Mono', monospace;
    font-size:0.7rem;
    padding:5px 10px;
    border-radius:4px;
    white-space:nowrap;
    opacity:0;
    pointer-events:none;
    transition:opacity .15s ease, transform .15s ease;
  }
  .hero-node:hover .label,
  .hero-node:focus-visible .label{
    opacity:1;
    transform:translateX(-50%) translateY(0);
  }

  .trust{
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    background:var(--bg-raised);
  }
  .trust .wrap{
    display:flex;
    flex-wrap:wrap;
    gap:10px 0;
    padding:22px 28px;
    justify-content:space-between;
  }
  .trust-item{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:0.92rem;
    color:var(--muted);
    padding:0 22px;
    border-left:1px solid var(--line);
  }
  .trust-item:first-child{border-left:none; padding-left:0;}
  .trust-item .mono{color:var(--red); font-size:0.82rem;}

  /* ---------- SECTION SHARED ---------- */
  section{padding:96px 0;}
  .section-head{
    max-width:56ch;
    margin-bottom:52px;
  }
  .section-head h2{
    font-size:clamp(1.7rem, 2.6vw, 2.3rem);
    font-weight:700;
  }
  .section-head p{
    margin-top:14px;
    color:var(--muted);
    font-size:1.03rem;
  }

  /* ---------- SERVICES ---------- */
  .services-list{
    display:grid;
    grid-template-columns:1fr 1fr;
    column-gap:48px;
  }
  .service-row{
    scroll-margin-top:90px;
    display:grid;
    grid-template-columns:64px 1fr;
    gap:16px;
    padding:26px 0;
    border-top:1px solid var(--line);
  }
  .service-row:nth-child(1),
  .service-row:nth-child(2){
    border-top:none;
  }
  .service-code{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.76rem;
    color:#fff;
    background:var(--red);
    border-radius:4px;
    height:30px;
    display:flex;
    align-items:center;
    justify-content:center;
    letter-spacing:0.02em;
  }
  .service-row h3{
    font-size:1.08rem;
    font-weight:600;
  }
  .service-row p{
    margin-top:8px;
    color:var(--muted);
    font-size:0.96rem;
  }

  /* ---------- ABOUT ---------- */
  .about .wrap{
    display:grid;
    grid-template-columns:1.1fr 0.9fr;
    gap:64px;
  }
  .about h2{
    font-size:clamp(1.7rem, 2.6vw, 2.3rem);
    font-weight:700;
    max-width:16ch;
  }
  .about .body-text{
    margin-top:22px;
    color:var(--muted);
    font-size:1.03rem;
    max-width:50ch;
  }
  .about .body-text + .body-text{margin-top:14px;}
  .facts{
    border-left:2px solid var(--red);
    padding-left:26px;
    display:flex;
    flex-direction:column;
    gap:20px;
    align-self:start;
  }
  .fact-label{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.78rem;
    color:var(--red);
  }
  .fact-value{
    margin-top:4px;
    font-size:1rem;
    color:var(--ink);
  }

  /* ---------- PROCESS (dark showcase panel) ---------- */
  .process{
    background:var(--dark-panel);
    color:var(--dark-panel-text);
  }
  .process .section-head h2{color:var(--dark-panel-text);}
  .process .section-head p{color:var(--dark-panel-muted);}
  .steps{
    display:grid;
    grid-template-columns:repeat(4, 1fr);
    gap:0;
    position:relative;
  }
  .steps::before{
    content:"";
    position:absolute;
    top:23px;
    left:6%;
    right:6%;
    height:1px;
    background:var(--dark-panel-line);
  }
  .step{
    position:relative;
    padding-right:20px;
  }
  .step-num{
    width:46px;
    height:46px;
    border-radius:50%;
    background:var(--dark-panel);
    border:1.5px solid var(--red-bright);
    color:var(--red-bright);
    font-family:'IBM Plex Mono', monospace;
    font-size:0.95rem;
    display:flex;
    align-items:center;
    justify-content:center;
    position:relative;
    z-index:2;
  }
  .step h3{
    color:var(--dark-panel-text);
    font-size:1.02rem;
    margin-top:20px;
    font-weight:600;
  }
  .step p{
    margin-top:10px;
    color:var(--dark-panel-muted);
    font-size:0.92rem;
  }

  /* ---------- FAQ ---------- */
  .faq-list{
    display:flex;
    flex-direction:column;
    max-width:70ch;
  }
  .faq-item{
    border-top:1px solid var(--line);
    padding:20px 0;
  }
  .faq-item:last-child{border-bottom:1px solid var(--line);}
  .faq-item summary{
    cursor:pointer;
    font-family:'Archivo', sans-serif;
    font-weight:600;
    font-size:1.02rem;
    list-style:none;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    color:var(--ink);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";
    font-family:'IBM Plex Mono', monospace;
    font-size:1.2rem;
    color:var(--red);
    flex-shrink:0;
  }
  .faq-item[open] summary::after{content:"–";}
  .faq-item p{
    margin-top:14px;
    color:var(--muted);
    font-size:0.96rem;
    max-width:62ch;
  }

  /* ---------- CONTACT ---------- */
  .contact .wrap{
    display:grid;
    grid-template-columns:0.85fr 1.15fr;
    gap:64px;
  }
  .contact-info h2{
    font-size:clamp(1.7rem, 2.6vw, 2.3rem);
    font-weight:700;
  }
  .contact-info p.lead{
    margin-top:16px;
    color:var(--muted);
    max-width:40ch;
  }
  .contact-detail{
    margin-top:28px;
    padding-top:18px;
    border-top:1px solid var(--line);
  }
  .contact-detail .fact-label{margin-bottom:4px;}
  .contact-detail .fact-value{margin-top:0;}

  form{
    display:flex;
    flex-direction:column;
    gap:18px;
  }
  .formrow{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:18px;
  }
  label{
    display:flex;
    flex-direction:column;
    gap:6px;
    font-size:0.88rem;
    color:var(--muted);
  }
  input, textarea{
    font-family:'IBM Plex Sans', sans-serif;
    font-size:0.98rem;
    padding:11px 13px;
    border:1.5px solid var(--line);
    border-radius:var(--radius);
    background:#fff;
    color:var(--ink);
  }
  input:focus, textarea:focus{
    border-color:var(--red);
    outline:none;
  }
  textarea{resize:vertical; min-height:110px;}
  .form-note{
    font-size:0.82rem;
    color:var(--muted);
  }

  /* ---------- FOOTER ---------- */
  footer{
    border-top:1px solid var(--line);
    padding:40px 0;
  }
  footer .wrap{
    display:flex;
    justify-content:space-between;
    align-items:center;
    flex-wrap:wrap;
    gap:16px;
  }
  .footer-left{
    display:flex;
    flex-direction:column;
    gap:4px;
  }
  .footer-left .logo{font-size:1.05rem;}
  .footer-left p{font-size:0.86rem; color:var(--muted);}
  .footer-links{
    display:flex;
    gap:22px;
    font-size:0.86rem;
    color:var(--muted);
  }
  .footer-links a:hover{color:var(--red-deep);}

  /* ---------- MOBILE ---------- */
  @media (max-width: 860px){
    .navlinks{
      position:absolute;
      top:72px; left:0; right:0;
      background:var(--bg);
      border-bottom:1px solid var(--line);
      flex-direction:column;
      align-items:flex-start;
      padding:20px 28px 26px;
      gap:16px;
      display:none;
    }
    .navlinks.open{display:flex;}
    .hamburger{display:block;}
    .navright .btn-primary{display:none;}
    .navlinks .btn-primary{display:inline-block; margin-top:6px;}

    .hero .wrap, .about .wrap, .contact .wrap{
      grid-template-columns:1fr;
    }
    .hero{padding-top:132px;}
    .hero-art{order:-1;}
    .services-list{grid-template-columns:1fr;}
    .service-row:nth-child(2){border-top:1px solid var(--line);}
    .steps{grid-template-columns:1fr; gap:34px;}
    .steps::before{display:none;}
    .formrow{grid-template-columns:1fr;}
    .trust .wrap{flex-direction:column; align-items:flex-start;}
    .trust-item{border-left:none; padding-left:0;}
  }

      .hp-field{position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden;}