:root{
    --bg: #0a0b0e;
    --bg-elevated: #121419;
    --grid-line: #1f232c;
    --grid-line-soft: #171a21;
    --text-primary: #eceef2;
    --text-secondary: #9aa1ae;
    --text-tertiary: #565c68;
    --axis-x: #ff5d3a; /* X */
    --axis-y: #43d17a; /* Y */
    --axis-z: #4e9bff; /* Z */
    --border-radius: 2px;
    --max-w: 1180px;
  }

  *{ margin:0; padding:0; box-sizing:border-box; }

  html{ scroll-behavior:smooth; }

  body{
    background: var(--bg);
    color: var(--text-primary);
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

  a{ color:inherit; text-decoration:none; }

  h1,h2,h3,h4{
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.15;
  }

  .mono{ font-family:'IBM Plex Mono', monospace; }

  .wrap{
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 32px;
  }

  ::selection{ background: var(--axis-x); color:#0a0b0e; }

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

  /* -------------------- background grid -------------------- */
  .dot-grid{
    position: fixed;
    inset: 0;
    background-image: radial-gradient(var(--grid-line-soft) 1px, transparent 1px);
    background-size: 28px 28px;
    z-index: -2;
    pointer-events: none;
  }

  /* -------------------- nav -------------------- */
  header{
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10,11,14,0.86);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--grid-line);
  }
  nav{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding: 20px 32px;
    max-width: var(--max-w);
    margin: 0 auto;
  }
  .logo{
    font-family:'Space Grotesk', sans-serif;
    font-weight:700;
    font-size:1.15rem;
    display:flex;
    align-items:center;
    gap:10px;
    letter-spacing:-0.01em;
  }
  .logo-mark{
    width:16px; height:16px;
    position:relative;
    flex-shrink:0;
  }
  .logo-mark span{
    position:absolute;
    inset:0;
    border:1.5px solid var(--axis-x);
    transform: rotate(0deg);
  }
  .logo-mark span:nth-child(2){ border-color:var(--axis-y); transform: translate(3px,3px); }
  .logo-mark span:nth-child(3){ border-color:var(--axis-z); transform: translate(6px,6px); }

  .navlinks{
    display:flex;
    gap:36px;
    font-size:0.88rem;
    color: var(--text-secondary);
  }
  .navlinks a:hover{ color: var(--text-primary); }

  .nav-cta{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.8rem;
    border:1px solid var(--grid-line);
    padding:9px 16px;
    color: var(--text-primary);
    transition: border-color .2s ease, background .2s ease;
  }
  .nav-cta:hover{ border-color: var(--axis-x); background: rgba(255,93,58,0.06); }

  .nav-toggle{ display:none; }

  /* -------------------- hero / viewport -------------------- */
  .hero{
    position:relative;
    padding: 96px 32px 120px;
    overflow:hidden;
    border-bottom: 1px solid var(--grid-line);
  }
  .hero-inner{
    max-width: var(--max-w);
    margin:0 auto;
    display:grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items:center;
  }
  .eyebrow{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.78rem;
    letter-spacing: 0.08em;
    color: var(--axis-x);
    text-transform: uppercase;
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:22px;
  }
  .eyebrow::before{
    content:"";
    width:22px; height:1px;
    background: var(--axis-x);
  }
  .hero h1{
    font-size: clamp(2.4rem, 4.6vw, 3.6rem);
    max-width: 12ch;
    margin-bottom: 22px;
  }
  .hero h1 em{
    font-style: normal;
    color: var(--text-secondary);
  }
  .hero p.lede{
    color: var(--text-secondary);
    font-size: 1.08rem;
    max-width: 46ch;
    margin-bottom: 36px;
  }
  .hero-ctas{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom:48px;}
  .btn-primary{
    background: var(--text-primary);
    color: var(--bg);
    padding: 14px 26px;
    font-weight:600;
    font-size:0.95rem;
    border: 1px solid var(--text-primary);
    transition: transform .15s ease, box-shadow .15s ease;
  }
  .btn-primary:hover{ transform: translateY(-1px); box-shadow: 0 6px 0 0 var(--axis-x); }
  .btn-secondary{
    padding: 14px 26px;
    font-size:0.95rem;
    border: 1px solid var(--grid-line);
    color: var(--text-primary);
    transition: border-color .2s ease;
  }
  .btn-secondary:hover{ border-color: var(--axis-z); }

  .hero-coords{
    display:flex;
    gap:28px;
    font-family:'IBM Plex Mono', monospace;
    font-size:0.78rem;
    color: var(--text-tertiary);
  }
  .hero-coords b{ color: var(--text-secondary); font-weight:500; }

  /* viewport cube scene */
  .scene{
    position:relative;
    height: 420px;
    perspective: 900px;
    display:flex;
    align-items:center;
    justify-content:center;
  }
  .floor{
    position:absolute;
    width: 480px;
    height: 480px;
    left:50%; top:62%;
    transform: translate(-50%,-50%) rotateX(72deg);
    background-image:
      linear-gradient(var(--grid-line) 1px, transparent 1px),
      linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 34px 34px;
    -webkit-mask-image: radial-gradient(circle at center, black 35%, transparent 72%);
    mask-image: radial-gradient(circle at center, black 35%, transparent 72%);
  }
  .cube{
    position:relative;
    width:150px; height:150px;
    transform-style: preserve-3d;
    animation: spin 22s linear infinite;
  }
  @keyframes spin{
    from{ transform: rotateX(-18deg) rotateY(0deg); }
    to{ transform: rotateX(-18deg) rotateY(360deg); }
  }
  .face{
    position:absolute;
    width:150px; height:150px;
    border:1.5px solid var(--text-secondary);
    background: rgba(18,20,25,0.4);
  }
  .face.front{ transform: translateZ(75px); border-color: var(--axis-x); }
  .face.back{ transform: translateZ(-75px) rotateY(180deg); border-color: var(--axis-x); opacity:.5;}
  .face.right{ transform: rotateY(90deg) translateZ(75px); border-color: var(--axis-z); }
  .face.left{ transform: rotateY(-90deg) translateZ(75px); border-color: var(--axis-z); opacity:.5;}
  .face.top{ transform: rotateX(90deg) translateZ(75px); border-color: var(--axis-y); }
  .face.bottom{ transform: rotateX(-90deg) translateZ(75px); border-color: var(--axis-y); opacity:.5;}

  .axis-tag{
    position:absolute;
    font-family:'IBM Plex Mono', monospace;
    font-size:0.7rem;
    padding: 2px 6px;
    border:1px solid;
    background: var(--bg);
  }
  .axis-tag.x{ color:var(--axis-x); border-color:var(--axis-x); top: 18%; right: 6%; }
  .axis-tag.y{ color:var(--axis-y); border-color:var(--axis-y); top: 8%; left: 40%; }
  .axis-tag.z{ color:var(--axis-z); border-color:var(--axis-z); bottom: 20%; left: 4%; }

  @media (prefers-reduced-motion: reduce){
    .cube{ animation: none; transform: rotateX(-18deg) rotateY(-28deg); }
  }

  /* -------------------- section shell -------------------- */
  section{
    padding: 100px 32px;
    border-bottom: 1px solid var(--grid-line);
  }
  .section-head{
    max-width: 640px;
    margin-bottom: 56px;
  }
  .section-head h2{
    font-size: clamp(1.7rem, 3vw, 2.3rem);
    margin-bottom:16px;
  }
  .section-head p{
    color: var(--text-secondary);
    font-size:1.02rem;
  }

  /* -------------------- services -------------------- */
  .services-grid{
    display:grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--grid-line);
    border:1px solid var(--grid-line);
  }
  .service-card{
    background: var(--bg);
    padding: 40px;
    position:relative;
  }
  .service-index{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.78rem;
    color: var(--text-tertiary);
    margin-bottom:22px;
    display:block;
  }
  .service-card h3{
    font-size:1.3rem;
    margin-bottom:14px;
  }
  .service-card p{
    color: var(--text-secondary);
    font-size:0.96rem;
    margin-bottom:20px;
  }
  .tag-row{ display:flex; flex-wrap:wrap; gap:8px; }
  .tag{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.72rem;
    color: var(--text-secondary);
    border:1px solid var(--grid-line);
    padding: 4px 9px;
  }
  .service-card:nth-child(1) .service-index{ color: var(--axis-x); }
  .service-card:nth-child(2) .service-index{ color: var(--axis-y); }
  .service-card:nth-child(3) .service-index{ color: var(--axis-z); }
  .service-card:nth-child(4) .service-index{ color: var(--axis-x); }

  /* -------------------- pipeline -------------------- */
  .pipeline{
    display:flex;
    flex-direction:column;
  }
  .pipeline-row{
    display:grid;
    grid-template-columns: 90px 1fr 1.4fr;
    gap: 28px;
    padding: 28px 0;
    border-top: 1px solid var(--grid-line);
    align-items:baseline;
  }
  .pipeline-row:last-child{ border-bottom: 1px solid var(--grid-line); }
  .pipeline-num{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.85rem;
  }
  .pipeline-row:nth-child(1) .pipeline-num{ color: var(--axis-x); }
  .pipeline-row:nth-child(2) .pipeline-num{ color: var(--axis-y); }
  .pipeline-row:nth-child(3) .pipeline-num{ color: var(--axis-z); }
  .pipeline-row:nth-child(4) .pipeline-num{ color: var(--axis-x); }
  .pipeline-row:nth-child(5) .pipeline-num{ color: var(--axis-y); }
  .pipeline-row:nth-child(6) .pipeline-num{ color: var(--axis-z); }
  .pipeline-row h4{ font-size:1.08rem; }
  .pipeline-row p{ color: var(--text-secondary); font-size:0.94rem; }

  /* -------------------- platforms -------------------- */
  .platform-grid{
    display:grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--grid-line);
    border: 1px solid var(--grid-line);
  }
  .platform-cell{
    background: var(--bg);
    padding: 26px 20px;
    font-family:'IBM Plex Mono', monospace;
    font-size:0.86rem;
    color: var(--text-secondary);
    display:flex;
    align-items:center;
    justify-content:center;
    text-align:center;
    min-height:76px;
  }
  .platform-cell:hover{ color: var(--text-primary); }

  /* -------------------- engagement models -------------------- */
  .models{
    display:grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .model-card{
    border: 1px solid var(--grid-line);
    padding: 32px;
  }
  .model-card h4{ font-size:1.05rem; margin-bottom:12px; }
  .model-card p{ color: var(--text-secondary); font-size:0.92rem; }
  .model-card .mono{ font-size:0.72rem; color:var(--text-tertiary); display:block; margin-bottom:14px; letter-spacing:0.06em; }

  /* -------------------- why us -------------------- */
  .why-grid{
    display:grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
  }
  .why-item h4{
    font-size:1.05rem;
    margin-bottom: 12px;
    display:flex;
    align-items:center;
    gap:10px;
  }
  .why-item h4::before{
    content:"";
    width:8px; height:8px;
    border:1.5px solid var(--axis-y);
    flex-shrink:0;
  }
  .why-item p{ color:var(--text-secondary); font-size:0.94rem; }

  /* -------------------- process cta -------------------- */
  .cta-band{
    padding: 90px 32px;
    text-align:center;
    border-bottom: 1px solid var(--grid-line);
  }
  .cta-band h2{
    font-size: clamp(1.7rem, 3.4vw, 2.5rem);
    max-width: 20ch;
    margin: 0 auto 28px;
  }
  .cta-band .hero-ctas{ justify-content:center; margin-bottom:0;}

  /* -------------------- contact -------------------- */
  .contact-grid{
    display:grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 64px;
  }
  .contact-info .mono{ color: var(--text-tertiary); font-size:0.78rem; letter-spacing:0.06em; display:block; margin-bottom:10px;}
  .contact-info h2{ font-size:1.9rem; margin-bottom:20px; }
  .contact-info p{ color:var(--text-secondary); margin-bottom:28px; max-width:38ch; }
  .contact-detail{ margin-bottom:18px; }
  .contact-detail span{ display:block; font-family:'IBM Plex Mono', monospace; font-size:0.75rem; color:var(--text-tertiary); margin-bottom:4px; }
  .contact-detail a, .contact-detail div{ font-size:0.98rem; }

  .contact-cta{
    border: 1px solid var(--grid-line);
    padding: 44px;
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:20px;
    justify-content:center;
  }
  .contact-cta .mono{
    font-size:0.76rem;
    color: var(--text-tertiary);
    letter-spacing:0.06em;
  }
  .contact-cta p{
    color: var(--text-secondary);
    font-size:0.96rem;
    max-width: 42ch;
  }
  .contact-email-link{
    font-family:'Space Grotesk', sans-serif;
    font-size: clamp(1.3rem, 2.4vw, 1.7rem);
    font-weight:600;
    color: var(--text-primary);
    border-bottom: 1.5px solid var(--axis-x);
    padding-bottom:4px;
    word-break: break-word;
  }
  .contact-email-link:hover{ color: var(--axis-x); }

  /* -------------------- footer -------------------- */
  footer{
    padding: 48px 32px 40px;
  }
  .footer-inner{
    max-width: var(--max-w);
    margin:0 auto;
    display:flex;
    justify-content:space-between;
    align-items:center;
    flex-wrap:wrap;
    gap:16px;
  }
  .footer-inner .mono{ font-size:0.76rem; color:var(--text-tertiary); }
  .footer-links{ display:flex; gap:24px; font-size:0.86rem; color:var(--text-secondary); }
  .footer-links a:hover{ color:var(--text-primary); }

  /* -------------------- responsive -------------------- */
  @media (max-width: 920px){
    .hero-inner{ grid-template-columns: 1fr; }
    .scene{ height:300px; order:-1; }
    .services-grid{ grid-template-columns: 1fr; }
    .platform-grid{ grid-template-columns: repeat(2,1fr); }
    .models{ grid-template-columns:1fr; }
    .why-grid{ grid-template-columns:1fr; gap:32px;}
    .contact-grid{ grid-template-columns:1fr; gap:48px; }
    .form-row{ grid-template-columns:1fr; }
    .pipeline-row{ grid-template-columns: 60px 1fr; }
    .pipeline-row > p{ grid-column: 1 / -1; }
    .navlinks{ display:none; }
  }