:root{
    --ink:#0F1A1D;
    --slate:#1C2B30;
    --slate-2:#324449;
    --paper:#F1F3EF;
    --paper-2:#E6E9E1;
    --line:#D3D8CE;
    --signal:#E2711D;
    --signal-dim:#F3C9A6;
    --teal:#2F7A72;
    --white:#FCFDFB;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    font-family:'IBM Plex Sans', sans-serif;
    background:var(--paper);
    color:var(--ink);
    line-height:1.6;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,.display{
    font-family:'Space Grotesk', sans-serif;
    font-weight:600;
    letter-spacing:-0.01em;
    color:var(--ink);
  }
  .mono{ font-family:'IBM Plex Mono', monospace; }
  a{ color:inherit; text-decoration:none; }
  img{max-width:100%; display:block;}
  .wrap{
    max-width:1120px;
    margin:0 auto;
    padding:0 32px;
  }
  @media (max-width:640px){ .wrap{padding:0 20px;} }

  /* ===== NAV ===== */
  header.site{
    position:fixed; top:0; left:0; right:0; z-index:50;
    background:rgba(15,26,29,0.92);
    backdrop-filter:blur(6px);
    border-bottom:1px solid rgba(255,255,255,0.08);
  }
  .nav-inner{
    max-width:1120px; margin:0 auto; padding:16px 32px;
    display:flex; align-items:center; justify-content:space-between;
  }
  .brand{
    display:flex; align-items:center; gap:10px;
    color:var(--white); font-family:'Space Grotesk'; font-weight:700; font-size:15px;
  }
  .brand .mark{
    width:32px; height:32px; border:1.5px solid var(--signal); border-radius:2px;
    display:flex; align-items:center; justify-content:center;
    color:var(--signal); font-family:'IBM Plex Mono'; font-size:12px; font-weight:500;
  }
  nav.links{ display:flex; gap:28px; }
  nav.links a{
    color:rgba(255,255,255,0.72); font-size:13.5px; font-weight:500;
    letter-spacing:0.01em;
    transition:color .2s;
  }
  nav.links a:hover{ color:var(--white); }
  .nav-cta{
    background:var(--signal); color:var(--white); padding:9px 18px;
    border-radius:2px; font-size:13.5px; font-weight:500;
  }
  .burger{ display:none; background:none; border:none; color:var(--white); font-size:22px; cursor:pointer; }
  @media (max-width:820px){
    nav.links, .nav-cta{ display:none; }
    .burger{ display:block; }
    nav.links.open{
      display:flex; flex-direction:column; position:absolute; top:64px; left:0; right:0;
      background:var(--ink); padding:18px 32px; gap:16px; border-top:1px solid rgba(255,255,255,0.08);
    }
    .nav-cta.open{ display:inline-block; margin:0 32px 18px; position:absolute; top:184px;}
  }

  /* ===== HERO ===== */
  .hero{
    position:relative;
    background:linear-gradient(180deg, var(--ink) 0%, var(--slate) 100%);
    color:var(--white);
    padding:150px 0 90px;
    overflow:hidden;
  }
  .hero.has-slider::before{
    content:''; position:absolute; inset:0; z-index:1;
    background:linear-gradient(180deg, rgba(15,26,29,0.5) 0%, rgba(15,26,29,0.87) 100%);
  }
  .hero.has-slider{ padding:190px 0 110px; min-height:560px; display:flex; align-items:flex-end; }
  .truss{
    position:absolute; top:0; right:-8%; height:100%; width:60%;
    opacity:0.55;
    pointer-events:none;
  }
  .hero .wrap{ position:relative; z-index:2; }
  .hero-grid{
    display:grid; grid-template-columns:1.3fr 1fr; gap:40px; align-items:end;
    position:relative; z-index:2;
  }
  @media (max-width:900px){ .hero-grid{ grid-template-columns:1fr; } }
  .eyebrow{
    color:var(--signal-dim); font-family:'IBM Plex Mono'; font-size:12.5px;
    letter-spacing:0.04em; margin-bottom:18px; display:flex; align-items:center; gap:10px;
  }
  .eyebrow .dot{ width:6px; height:6px; background:var(--signal); border-radius:50%; }
  .hero h1{
    font-size:clamp(2.1rem, 4.6vw, 3.6rem);
    line-height:1.06;
    color:var(--white);
    max-width:11.5ch;
  }
  .hero .role{
    margin-top:18px; font-size:1.15rem; color:rgba(255,255,255,0.78); max-width:44ch; font-weight:400;
  }
  .hero .role b{ color:var(--white); font-weight:600; }
  .hero-meta{
    margin-top:34px; display:flex; gap:14px; flex-wrap:wrap;
  }
  .hero-meta span{
    border:1px solid rgba(255,255,255,0.22); color:rgba(255,255,255,0.85);
    font-size:12.5px; padding:7px 12px; border-radius:2px; font-family:'IBM Plex Mono';
  }
  .hero-side{
    border-left:1px solid rgba(255,255,255,0.18); padding-left:28px;
  }
  @media (max-width:900px){ .hero-side{ border-left:none; border-top:1px solid rgba(255,255,255,0.18); padding-left:0; padding-top:24px; } }
  .hero-side p{ color:rgba(255,255,255,0.65); font-size:14px; }
  .hero-cta{
    margin-top:18px; display:inline-flex; align-items:center; gap:8px;
    background:var(--signal); color:var(--white); padding:12px 20px; border-radius:2px;
    font-weight:600; font-size:14px;
  }

  /* signal line animation */
  .signal-line{
    position:absolute; left:0; bottom:0; width:100%; height:3px;
  }
  .signal-line path{
    fill:none; stroke:var(--signal); stroke-width:2;
    stroke-dasharray:1400; stroke-dashoffset:1400;
    animation:draw 2.4s ease forwards 0.4s;
  }
  @keyframes draw{ to{ stroke-dashoffset:0; } }

  /* ===== STAT STRIP ===== */
  .stats{
    background:var(--slate-2);
    border-top:1px solid rgba(255,255,255,0.08);
  }
  .stats .wrap{
    display:grid; grid-template-columns:repeat(4,1fr);
    padding:26px 32px;
  }
  .stats .item{
    padding:0 20px; border-left:1px solid rgba(255,255,255,0.14);
  }
  .stats .item:first-child{ border-left:none; padding-left:0; }
  .stats .num{
    font-family:'Space Grotesk'; font-size:1.7rem; color:var(--white); font-weight:700;
  }
  .stats .lbl{ font-size:12px; color:rgba(255,255,255,0.6); margin-top:2px; }
  @media (max-width:760px){
    .stats .wrap{ grid-template-columns:repeat(2,1fr); gap:20px 0; }
    .stats .item:nth-child(3){ border-left:none; padding-left:0; }
  }

  /* ===== SECTION GENERIC ===== */
  section{ padding:88px 0; }
  .section-head{
    display:flex; justify-content:space-between; align-items:flex-end; gap:24px;
    margin-bottom:44px; border-bottom:1px solid var(--line); padding-bottom:20px;
  }
  .section-head .tag{
    font-family:'IBM Plex Mono'; font-size:12px; color:var(--teal); letter-spacing:0.04em;
  }
  .section-head h2{ font-size:1.9rem; margin-top:6px; }
  .section-head .idx{ font-family:'IBM Plex Mono'; color:var(--line); font-size:13px; }

  /* ===== ABOUT ===== */
  .about-grid{
    display:grid; grid-template-columns:0.9fr 1.3fr; gap:56px;
  }
  @media (max-width:820px){ .about-grid{ grid-template-columns:1fr; gap:32px; } }
  .about-grid p{ color:var(--slate); font-size:15.5px; }
  .about-grid p + p{ margin-top:14px; }
  .quote-box{
    border-left:3px solid var(--signal); padding-left:20px;
  }
  .quote-box .label{ font-family:'IBM Plex Mono'; font-size:11.5px; color:var(--slate-2); letter-spacing:0.03em; }
  .quote-box .name{ font-family:'Space Grotesk'; font-size:1.3rem; margin-top:6px; }
  .quote-box .role{ color:var(--teal); font-size:13.5px; margin-top:4px; font-weight:500; }
  .info-list{ margin-top:26px; font-size:13.5px; }
  .info-list div{ display:flex; justify-content:space-between; padding:9px 0; border-bottom:1px dashed var(--line); }
  .info-list span:first-child{ color:var(--slate-2); }
  .info-list span:last-child{ font-weight:500; text-align:right; }

  /* ===== EXPERTISE ===== */
  .expertise{ background:var(--paper-2); }
  .patch-grid{
    display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
    background:var(--line); border:1px solid var(--line);
  }
  @media (max-width:820px){ .patch-grid{ grid-template-columns:repeat(2,1fr); } }
  .patch{
    background:var(--white); padding:26px 22px; min-height:118px;
    display:flex; flex-direction:column; justify-content:space-between;
  }
  .patch .n{ font-family:'IBM Plex Mono'; font-size:11px; color:var(--signal); }
  .patch .t{ font-size:14.5px; font-weight:500; margin-top:14px; line-height:1.35; }

  /* ===== TOOLS ===== */
  .tools-grid{
    display:grid; grid-template-columns:repeat(4,1fr); gap:32px;
  }
  @media (max-width:900px){ .tools-grid{ grid-template-columns:repeat(2,1fr); } }
  .tools-col h3{
    font-family:'IBM Plex Mono'; font-size:12px; color:var(--teal);
    text-transform:none; letter-spacing:0.02em; margin-bottom:14px;
    padding-bottom:10px; border-bottom:2px solid var(--ink); font-weight:500;
  }
  .tools-col ul{ list-style:none; }
  .tools-col li{
    font-size:13.5px; color:var(--slate); padding:6px 0; position:relative; padding-left:14px;
  }
  .tools-col li::before{
    content:''; position:absolute; left:0; top:13px; width:5px; height:1.5px; background:var(--signal);
  }

  /* ===== TIMELINE ===== */
  .timeline{ position:relative; }
  .tl-item{
    display:grid; grid-template-columns:150px 1fr; gap:28px;
    padding:26px 0; border-top:1px solid var(--line); position:relative;
  }
  .tl-item:first-child{ border-top:none; }
  .tl-year{
    font-family:'IBM Plex Mono'; font-size:13px; color:var(--teal); padding-top:3px; font-weight:500;
  }
  .tl-body h3{ font-size:1.05rem; font-weight:600; }
  .tl-body .org{ font-size:13px; color:var(--slate-2); margin-top:2px; font-family:'IBM Plex Mono'; }
  .tl-body p{ font-size:14px; color:var(--slate); margin-top:10px; max-width:68ch; }
  @media (max-width:640px){
    .tl-item{ grid-template-columns:1fr; gap:6px; }
  }

  /* ===== EDUCATION + CERT ===== */
  .edu-grid{ display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--line); border:1px solid var(--line); }
  @media (max-width:760px){ .edu-grid{ grid-template-columns:1fr; } }
  .edu-card{ background:var(--white); padding:30px; }
  .edu-card .deg{ font-family:'Space Grotesk'; font-size:1.15rem; }
  .edu-card .school{ font-size:13.5px; color:var(--teal); margin-top:6px; font-weight:500; }
  .edu-card .yr{ font-family:'IBM Plex Mono'; font-size:12.5px; color:var(--slate-2); margin-top:14px; }

  /* ===== PORTFOLIO GALLERY ===== */
  .pf-grid{
    columns:3 260px; column-gap:20px;
  }
  @media (max-width:900px){ .pf-grid{ columns:2 220px; } }
  @media (max-width:600px){ .pf-grid{ columns:1; } }
  .pf-card{
    break-inside:avoid; margin-bottom:20px;
    background:var(--white); border:1px solid var(--line);
  }
  .pf-img{ width:100%; display:block; }
  .pf-info{
    display:flex; gap:12px; padding:14px 16px; align-items:flex-start;
  }
  .pf-n{
    font-family:'IBM Plex Mono'; font-size:11px; color:var(--signal); flex-shrink:0; padding-top:2px;
  }
  .pf-title{ font-size:13.5px; font-weight:600; line-height:1.3; }
  .pf-loc{ font-size:12px; color:var(--slate-2); margin-top:4px; }

  /* ===== CLIENT LOGOS ===== */
  .client-grid{
    display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
    background:var(--line); border:1px solid var(--line);
  }
  @media (max-width:820px){ .client-grid{ grid-template-columns:repeat(2,1fr); } }
  .client-badge{
    background:var(--white); padding:30px 20px; min-height:104px;
    display:flex; flex-direction:column; align-items:center; justify-content:center; gap:8px;
    text-align:center; transition:background .2s;
  }
  .client-badge:hover{ background:var(--paper-2); }
  .client-badge .cb-name{
    font-family:'Space Grotesk'; font-weight:700; font-size:1.05rem;
    letter-spacing:0.01em; color:var(--ink);
  }
  .client-badge .cb-tag{
    font-family:'IBM Plex Mono'; font-size:10.5px; color:var(--teal); letter-spacing:0.02em;
  }

  /* ===== CERTIFICATION ===== */
  .cert-intro{ font-size:14.5px; color:var(--slate); max-width:64ch; margin-bottom:36px; }
  .cert-grid{
    display:grid; grid-template-columns:repeat(2,1fr); gap:28px;
  }
  @media (max-width:760px){ .cert-grid{ grid-template-columns:1fr; } }
  .cert-card{
    background:var(--white); border:1px solid var(--line);
  }
  .cert-card .cert-img{
    display:block; width:100%; border-bottom:1px solid var(--line);
    filter:grayscale(8%);
  }
  .cert-card .cert-info{ padding:20px 22px; }
  .cert-card .cert-role{
    font-family:'IBM Plex Mono'; font-size:11px; color:var(--signal); letter-spacing:0.03em;
  }
  .cert-card .cert-title{ font-family:'Space Grotesk'; font-size:1.05rem; margin-top:6px; }
  .cert-card .cert-meta{ font-size:12.5px; color:var(--slate-2); margin-top:8px; line-height:1.5; }
  .cert-card .cert-holder{ font-size:12.5px; color:var(--teal); margin-top:10px; font-weight:500; }

  /* ===== CONTACT ===== */
  .contact{
    background:var(--ink); color:var(--white);
  }
  .contact .section-head{ border-bottom-color:rgba(255,255,255,0.18); }
  .contact .section-head .tag{ color:var(--signal-dim); }
  .contact .section-head h2{ color:var(--white); }
  .contact-grid{ display:grid; grid-template-columns:1.1fr 0.9fr; gap:56px; }
  @media (max-width:820px){ .contact-grid{ grid-template-columns:1fr; gap:36px; } }
  .contact-grid p{ color:rgba(255,255,255,0.7); font-size:15px; max-width:52ch; }
  .contact-list{ margin-top:28px; }
  .contact-list div{
    display:flex; gap:16px; padding:16px 0; border-top:1px solid rgba(255,255,255,0.14);
  }
  .contact-list div:last-child{ border-bottom:1px solid rgba(255,255,255,0.14); }
  .contact-list .k{ font-family:'IBM Plex Mono'; font-size:11.5px; color:var(--signal-dim); width:90px; flex-shrink:0; padding-top:2px; }
  .contact-list .v{ font-size:14.5px; }
  .contact-list a.v:hover{ color:var(--signal-dim); }
  .cta-block{ background:var(--slate); padding:32px; border:1px solid rgba(255,255,255,0.1); }
  .cta-block .lbl{ font-family:'IBM Plex Mono'; font-size:11.5px; color:var(--signal-dim); }
  .cta-block h3{ color:var(--white); font-size:1.4rem; margin-top:10px; }
  .cta-block p{ color:rgba(255,255,255,0.62); font-size:13.5px; margin-top:10px; }
  .cta-buttons{ margin-top:22px; display:flex; flex-direction:column; gap:10px; }
  .btn{
    display:flex; align-items:center; justify-content:space-between;
    padding:13px 18px; border-radius:2px; font-size:14px; font-weight:500;
  }
  .btn.primary{ background:var(--signal); color:var(--white); }
  .btn.secondary{ border:1px solid rgba(255,255,255,0.25); color:var(--white); }

  .map-embed{
    margin-top:48px; border:1px solid rgba(255,255,255,0.16); position:relative;
  }
  .map-embed .map-label{
    position:absolute; top:16px; left:16px; z-index:2;
    background:var(--ink); border:1px solid rgba(255,255,255,0.2);
    padding:8px 14px; font-family:'IBM Plex Mono'; font-size:11.5px; color:var(--signal-dim);
  }
  .map-embed iframe{
    width:100%; height:340px; display:block; border:0; filter:grayscale(35%) contrast(1.05);
  }

  nav.links.open a.active{ color:var(--signal-dim); }
  nav.links a.active{ color:var(--white); border-bottom:2px solid var(--signal); padding-bottom:2px; }

  /* ===== HERO SLIDER (HOME) ===== */
  .hero-slider{ position:relative; height:100%; width:100%; position:absolute; inset:0; z-index:0; }
  .hs-slide{
    position:absolute; inset:0; opacity:0; transition:opacity 1.1s ease;
  }
  .hs-slide.active{ opacity:1; }
  .hs-slide img{
    width:100%; height:100%; object-fit:cover; filter:grayscale(55%) brightness(0.38) contrast(1.1);
  }
  .hs-dots{
    position:absolute; bottom:26px; left:50%; transform:translateX(-50%); z-index:3;
    display:flex; gap:9px;
  }
  .hs-dots button{
    width:8px; height:8px; border-radius:50%; border:1px solid rgba(255,255,255,0.5);
    background:transparent; cursor:pointer; padding:0;
  }
  .hs-dots button.active{ background:var(--signal); border-color:var(--signal); }

  /* ===== HOW IT WORKS ===== */
  .how-grid{
    display:grid; grid-template-columns:repeat(4,1fr); gap:32px;
  }
  @media (max-width:820px){ .how-grid{ grid-template-columns:repeat(2,1fr); } }
  @media (max-width:500px){ .how-grid{ grid-template-columns:1fr; } }
  .how-step{ position:relative; padding-top:8px; }
  .how-num{
    font-family:'Space Grotesk'; font-size:2.2rem; font-weight:700; color:var(--signal-dim);
    -webkit-text-stroke:1.4px var(--signal); color:transparent;
  }
  .how-step h3{ font-size:1.05rem; margin-top:10px; }
  .how-step p{ font-size:13.5px; color:var(--slate); margin-top:8px; }

  /* ===== LIGHTBOX ===== */
  .pf-card{ cursor:pointer; }
  .lightbox-overlay{
    position:fixed; inset:0; background:rgba(10,15,17,0.95); z-index:300;
    display:none; align-items:center; justify-content:center; padding:40px;
  }
  .lightbox-overlay.open{ display:flex; }
  .lightbox-inner{ max-width:900px; width:100%; text-align:center; }
  .lightbox-inner img{
    max-width:100%; max-height:70vh; margin:0 auto; border:1px solid rgba(255,255,255,0.15);
  }
  .lightbox-caption{ color:var(--white); margin-top:18px; font-size:14px; }
  .lightbox-caption .lc-title{ font-family:'Space Grotesk'; font-size:1.1rem; }
  .lightbox-caption .lc-loc{ color:rgba(255,255,255,0.6); font-size:12.5px; margin-top:4px; }
  .lb-close, .lb-prev, .lb-next{
    position:fixed; background:none; border:1px solid rgba(255,255,255,0.3); color:var(--white);
    cursor:pointer; font-family:'IBM Plex Mono'; font-size:13px; padding:10px 14px; border-radius:2px;
  }
  .lb-close{ top:24px; right:28px; }
  .lb-prev{ left:24px; top:50%; transform:translateY(-50%); }
  .lb-next{ right:24px; top:50%; transform:translateY(-50%); }
  @media (max-width:640px){
    .lb-prev, .lb-next{ padding:8px 10px; }
  }

  /* ===== HOME QUICK LINKS ===== */
  .qlink-grid{
    display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
    background:var(--line); border:1px solid var(--line);
  }
  @media (max-width:820px){ .qlink-grid{ grid-template-columns:repeat(2,1fr); } }
  .qlink-card{
    background:var(--white); padding:28px 24px; display:flex; flex-direction:column;
    justify-content:space-between; min-height:170px; transition:background .2s;
  }
  .qlink-card:hover{ background:var(--paper-2); }
  .qlink-card .ql-tag{ font-family:'IBM Plex Mono'; font-size:11px; color:var(--signal); }
  .qlink-card h3{ font-size:1.05rem; margin-top:12px; }
  .qlink-card p{ font-size:13px; color:var(--slate); margin-top:8px; flex-grow:1; }
  .qlink-card .ql-more{ font-family:'IBM Plex Mono'; font-size:12px; color:var(--teal); margin-top:14px; font-weight:500; }

  footer{
    background:var(--ink); color:rgba(255,255,255,0.4); font-size:12.5px;
    padding:22px 0; border-top:1px solid rgba(255,255,255,0.1);
  }
  footer .wrap{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px; }