:root{
    --graphite:#1A1918;
    --iron:#252321;
    --iron-2:#2E2B28;
    --ember:#FF5A2B;
    --ember-light:#FF7A45;
    --spark:#FFC53D;
    --steel:#9AA5B1;
    --bone:#F5F0E6;
    --bone-dim:#D8D2C4;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--graphite);
    color:var(--bone);
    font-family:'Hanken Grotesk', sans-serif;
    line-height:1.6;
    overflow-x:hidden;
  }
  h1,h2,h3{
    font-family:'Chakra Petch', sans-serif;
    font-weight:700;
    letter-spacing:-0.01em;
    line-height:0.95;
  }
  .mono{
    font-family:'IBM Plex Mono', monospace;
  }
  .eyebrow{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.75rem;
    letter-spacing:0.25em;
    text-transform:uppercase;
    color:var(--steel);
  }
  a{color:inherit;}
  img{max-width:100%; display:block;}

  /* NAV */
  nav{
    position:fixed; top:0; left:0; right:0; z-index:100;
    display:flex; align-items:center; justify-content:space-between;
    padding:22px 6vw;
    background:rgba(26,25,24,0.85);
    backdrop-filter:blur(10px);
    border-bottom:1px solid rgba(154,165,177,0.15);
  }
  .nav-mark{
    display:flex; align-items:center; gap:10px;
    font-family:'Big Shoulders Stencil Display', sans-serif;
    font-weight:800;
    font-size:1.5rem;
    letter-spacing:-0.02em;
  }
  .nav-mark img{ height:34px; width:auto; }
  .nav-wordmark{ display:inline-flex; align-items:center; position:relative; }
  .nav-mark .nvil{color:var(--ember);}
  .nav-spark{
    position:relative;
    width:0; height:0;
    margin:0 1px;
  }
  .nav-spark svg{
    position:absolute;
    top:50%; left:50%;
    transform:translate(-50%,-56%);
    width:20px; height:20px;
    overflow:visible;
  }
  nav ul{
    display:flex; gap:36px; list-style:none;
  }
  nav a{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.8rem;
    letter-spacing:0.08em;
    text-transform:uppercase;
    text-decoration:none;
    color:var(--steel);
    transition:color 0.2s;
  }
  nav a:hover{color:var(--bone);}
  .lang-switch{
    padding-left:20px;
    margin-left:4px;
    border-left:1px solid rgba(154,165,177,0.25);
  }
  .nav-toggle{ display:none; }
  .nav-burger{
    display:none;
    flex-direction:column;
    gap:5px;
    cursor:pointer;
    padding:6px;
  }
  .nav-burger span{
    width:22px; height:2px;
    background:var(--bone);
    transition:transform 0.25s, opacity 0.25s;
  }
  @media(max-width:720px){
    .nav-burger{ display:flex; }
    nav ul{
      display:flex; flex-direction:column; gap:0;
      position:absolute; top:100%; left:0; right:0;
      background:var(--iron);
      border-bottom:1px solid rgba(154,165,177,0.15);
      max-height:0;
      overflow:hidden;
      transition:max-height 0.3s ease;
    }
    nav ul li{ border-top:1px solid rgba(154,165,177,0.1); }
    nav ul li a{ display:block; padding:18px 6vw; }
    nav ul li a.lang-switch{ padding-left:6vw; margin-left:0; border-left:none; }
    .nav-toggle:checked ~ ul{ max-height:260px; }
    .nav-toggle:checked ~ .nav-burger span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
    .nav-toggle:checked ~ .nav-burger span:nth-child(2){ opacity:0; }
    .nav-toggle:checked ~ .nav-burger span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }
  }

  /* Spark divider - reused motif */
  .spark-divider{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:14px;
    margin:0 auto;
    width:fit-content;
    padding:48px 0;
  }
  .spark-divider .line{
    width:80px; height:1px;
    background:linear-gradient(90deg, transparent, var(--steel), transparent);
    opacity:0.5;
  }
  .spark-divider .dot{
    width:8px; height:8px; border-radius:50%;
    background:var(--ember);
    box-shadow:0 0 12px 3px rgba(255,90,43,0.5);
  }

  /* HERO */
  .hero{
    min-height:100vh;
    display:flex; flex-direction:column;
    align-items:center; justify-content:center;
    text-align:center;
    padding:120px 6vw 60px;
    position:relative;
  }
  .hero::before{
    content:'';
    position:absolute; inset:0;
    background:
      radial-gradient(ellipse 600px 400px at 50% 20%, rgba(255,90,43,0.10), transparent 70%),
      repeating-linear-gradient(0deg, rgba(154,165,177,0.03) 0px, rgba(154,165,177,0.03) 1px, transparent 1px, transparent 42px);
    pointer-events:none;
  }
  .hero-lockup{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:clamp(20px, 4vw, 56px);
    flex-wrap:wrap;
  }
  .hero-icon{
    width:clamp(140px, 20vw, 260px);
    height:auto;
    filter:drop-shadow(0 12px 30px rgba(255,90,43,0.18));
    opacity:0;
    animation:icon-in 0.9s ease-out 0.15s forwards;
  }
  @keyframes icon-in{
    0%{ opacity:0; transform:scale(0.85) translateY(10px);}
    100%{ opacity:1; transform:scale(1) translateY(0);}
  }
  .wordmark{
    position:relative;
    font-family:'Big Shoulders Stencil Display', sans-serif;
    font-weight:800;
    font-size:clamp(2.8rem, 9vw, 6.5rem);
    display:flex;
    align-items:center;
    line-height:1;
  }
  .wordmark .core{color:var(--bone);}
  .wordmark .nvil{
    background:linear-gradient(135deg, var(--ember-light), var(--ember));
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
  .spark-seam{
    position:relative;
    width:0; height:0;
  }
  .spark-seam .glow{
    position:absolute;
    top:-24px; left:-24px;
    width:48px; height:48px;
    border-radius:50%;
    background:radial-gradient(circle, rgba(255,197,61,0.9), rgba(255,90,43,0.4) 55%, transparent 75%);
    opacity:0;
    animation:ignite 2.4s ease-out 0.7s 1;
  }
  @keyframes ignite{
    0%{ opacity:0; transform:scale(0.4);}
    18%{ opacity:1; transform:scale(1.15);}
    35%{ opacity:0.85; transform:scale(0.95);}
    100%{ opacity:0; transform:scale(1.3);}
  }
  .hero-wordmark-block{ text-align:center; }
  .hero-tag{
    margin-top:28px;
    max-width:560px;
    color:var(--bone-dim);
    font-size:1.05rem;
  }
  .hero-eyebrow{margin-bottom:18px;}
  .scroll-cue{
    position:absolute; bottom:36px;
    font-family:'IBM Plex Mono', monospace;
    font-size:0.7rem;
    letter-spacing:0.2em;
    color:var(--steel);
    text-transform:uppercase;
    opacity:0.6;
  }

  /* SECTION shared */
  section{ padding:0 6vw; }
  .section-inner{ max-width:1180px; margin:0 auto; }
  .section-head{ text-align:center; max-width:640px; margin:0 auto 56px; }
  .section-head h2{ font-size:clamp(2rem, 4vw, 3rem); margin-top:10px; }
  .section-head p{ color:var(--bone-dim); margin-top:14px; }

  /* SERVICE PANELS */
  .panels{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:24px;
  }
  @media(max-width:900px){ .panels{grid-template-columns:1fr;} }
  .panel{
    position:relative;
    background:linear-gradient(160deg, var(--iron-2), var(--iron));
    border:1px solid rgba(154,165,177,0.15);
    border-radius:4px;
    padding:38px 30px;
    transition:transform 0.25s, border-color 0.25s;
  }
  .panel:hover{
    transform:translateY(-6px);
    border-color:rgba(255,90,43,0.4);
  }
  .rivet{
    position:absolute; width:8px; height:8px; border-radius:50%;
    background:radial-gradient(circle at 35% 35%, #c9cdd2, #6b7178);
  }
  .rivet.tl{top:12px; left:12px;} .rivet.tr{top:12px; right:12px;}
  .rivet.bl{bottom:12px; left:12px;} .rivet.br{bottom:12px; right:12px;}
  .panel-num{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.75rem;
    color:var(--ember);
    letter-spacing:0.1em;
  }
  .panel h3{
    font-size:2.1rem;
    margin-top:12px;
    margin-bottom:14px;
  }
  .panel p{ color:var(--bone-dim); font-size:0.95rem; }

  /* BITAHI FEATURE */
  .bitahi{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:60px;
    align-items:center;
    background:var(--iron);
    border-radius:6px;
    padding:60px;
    border:1px solid rgba(154,165,177,0.15);
  }
  @media(max-width:840px){ .bitahi{grid-template-columns:1fr; padding:36px 24px;} }
  .bitahi-visual{
    aspect-ratio:9/14;
    max-width:280px;
    margin:0 auto;
    background:linear-gradient(160deg, #2b2926, #1c1a18);
    border-radius:28px;
    border:1px solid rgba(154,165,177,0.2);
    display:flex; align-items:center; justify-content:center;
    position:relative;
    overflow:hidden;
  }
  .bitahi-visual::after{
    content:'';
    position:absolute; inset:0;
    background:radial-gradient(circle at 50% 30%, rgba(255,90,43,0.18), transparent 60%);
    pointer-events:none;
  }
  .bitahi-visual img{
    width:100%; height:100%;
    object-fit:cover;
  }
  .bitahi-title-row{
    display:flex; align-items:center; gap:12px;
    margin-bottom:16px;
  }
  .bitahi-title-row.bitahi-title-row h2{ margin-bottom:0; }
  .bitahi-logo{
    height:34px; width:auto;
  }
  .badge{
    display:inline-block;
    font-family:'IBM Plex Mono', monospace;
    font-size:0.7rem;
    letter-spacing:0.1em;
    color:var(--spark);
    border:1px solid rgba(255,197,61,0.4);
    padding:4px 10px;
    border-radius:20px;
    margin-bottom:18px;
    text-transform:uppercase;
  }
  .bitahi h2{ font-size:clamp(2rem,4vw,2.8rem); margin-bottom:16px;}
  .bitahi p{ color:var(--bone-dim); margin-bottom:24px;}
  .bitahi ul{ list-style:none; display:flex; flex-direction:column; gap:10px; margin-bottom:28px;}
  .bitahi li{
    font-size:0.92rem; color:var(--bone-dim);
    padding-left:20px; position:relative;
  }
  .bitahi li::before{
    content:'';
    position:absolute; left:0; top:9px;
    width:8px; height:2px;
    background:var(--ember);
  }
  .btn{
    display:inline-flex; align-items:center; gap:10px;
    font-family:'IBM Plex Mono', monospace;
    font-size:0.85rem; letter-spacing:0.05em;
    text-transform:uppercase;
    text-decoration:none;
    background:var(--ember);
    color:var(--graphite);
    font-weight:500;
    padding:14px 26px;
    border-radius:2px;
    border:none;
    cursor:pointer;
    transition:background 0.2s, transform 0.2s;
  }
  .btn:hover{ background:var(--ember-light); transform:translateY(-2px); }
  .btn-outline{
    background:transparent;
    border:1px solid var(--steel);
    color:var(--bone);
  }
  .btn-outline:hover{ border-color:var(--bone); background:transparent; }

  /* PROFILE / CREDIBILITY - spec sheet style */
  .spec-sheet{
    background:var(--iron);
    border:1px solid rgba(154,165,177,0.15);
    border-radius:6px;
    overflow:hidden;
  }
  .spec-header{
    display:flex; justify-content:space-between; align-items:flex-start;
    flex-wrap:wrap; gap:24px;
    padding:44px 44px 32px;
    border-bottom:1px solid rgba(154,165,177,0.15);
  }
  .spec-header h2{ font-size:clamp(1.8rem,3.5vw,2.4rem); }
  .spec-role{ color:var(--ember); font-size:1rem; margin-top:6px; font-family:'IBM Plex Mono',monospace;}
  .spec-meta{ text-align:right; }
  .spec-meta .mono{ color:var(--steel); font-size:0.8rem; display:block; }
  .spec-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
  }
  @media(max-width:800px){ .spec-grid{grid-template-columns:1fr;} }
  .spec-col{
    padding:32px 44px;
    border-right:1px solid rgba(154,165,177,0.1);
  }
  .spec-col:last-child{ border-right:none; }
  .spec-label{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.7rem;
    letter-spacing:0.15em;
    color:var(--steel);
    text-transform:uppercase;
    margin-bottom:14px;
  }
  .spec-col p, .spec-col li{ color:var(--bone-dim); font-size:0.92rem; }
  .spec-col ul{ list-style:none; display:flex; flex-direction:column; gap:8px; }
  .tag-row{ display:flex; flex-wrap:wrap; gap:8px; }
  .tag{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.72rem;
    background:rgba(154,165,177,0.1);
    color:var(--bone-dim);
    padding:5px 10px;
    border-radius:3px;
    border:1px solid rgba(154,165,177,0.15);
  }

  /* CONTACT */
  .contact-panel{
    background:linear-gradient(160deg, var(--iron-2), var(--iron));
    border:1px solid rgba(154,165,177,0.15);
    border-radius:6px;
    padding:56px;
    max-width:640px;
    margin:0 auto;
    position:relative;
  }
  @media(max-width:640px){ .contact-panel{padding:32px 24px;} }
  .form-row{ display:flex; flex-direction:column; gap:8px; margin-bottom:22px; }
  label{
    font-family:'IBM Plex Mono', monospace;
    font-size:0.72rem;
    letter-spacing:0.1em;
    text-transform:uppercase;
    color:var(--steel);
  }
  input, textarea{
    background:var(--graphite);
    border:1px solid rgba(154,165,177,0.25);
    border-radius:3px;
    padding:13px 14px;
    color:var(--bone);
    font-family:'Hanken Grotesk', sans-serif;
    font-size:0.95rem;
    resize:vertical;
  }
  input:focus, textarea:focus{
    outline:none;
    border-color:var(--ember);
  }
  .hp-field{ position:absolute; left:-9999px; }

  footer{
    text-align:center;
    padding:60px 6vw 40px;
    color:var(--steel);
    font-family:'IBM Plex Mono', monospace;
    font-size:0.78rem;
    letter-spacing:0.05em;
  }
  footer .foot-mark{ color:var(--bone-dim); margin-bottom:8px; display:block; }