:root{
    --asphalt: #1e2320;
    --asphalt-2: #262c28;
    --concrete: #d8d4c8;
    --paper: #efece3;
    --paper-dim: #e4e0d3;
    --amber: #e2a33d;
    --amber-dim: #c98f2e;
    --survey: #3d5a56;
    --survey-light: #6b8d87;
    --line: rgba(30,35,32,0.16);
    --line-on-dark: rgba(239,236,227,0.16);
  }

  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--paper);
    color:var(--asphalt);
    font-family:'IBM Plex Sans', sans-serif;
    line-height:1.5;
    overflow-x:hidden;
  }

  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *{animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important;}
  }

  h1,h2,h3{font-family:'Oswald', sans-serif; text-transform:uppercase; letter-spacing:0.01em;}
  .mono{font-family:'IBM Plex Mono', monospace;}

  a{color:inherit;}
  :focus-visible{outline:3px solid var(--amber); outline-offset:2px;}

  .wrap{max-width:1180px; margin:0 auto; padding:0 32px;}
  @media (max-width:640px){ .wrap{padding:0 20px;} }

  /* ---------- Chainage rail: the signature element ---------- */
  .chainage{
    position:relative;
    height:34px;
    background: repeating-linear-gradient(
      to right,
      var(--asphalt) 0px, var(--asphalt) 1px,
      transparent 1px, transparent 40px
    );
    background-color: var(--paper-dim);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .chainage::before{
    content:"";
    position:absolute; left:0; right:0; top:50%;
    height:1px; background:var(--line);
  }
  .chainage-labels{
    display:flex;
    height:100%;
    align-items:center;
    white-space:nowrap;
  }
  .chainage-labels span{
    display:inline-block;
    min-width:120px;
    font-size:11px;
    letter-spacing:0.08em;
    color:var(--survey);
    padding-left:6px;
  }

  /* ---------- Nav ---------- */
  header{
    position:sticky; top:0; z-index:50;
    background:var(--paper);
    border-bottom:1px solid var(--line);
  }
  .navbar{
    display:flex; 
    align-items:center; justify-content:space-between;
    padding:18px 0;
  }
  .brand{
    display:flex; align-items:center; gap:12px;
  }

  .brand-logo{
    display: flex;
    height: 35px;
    width: 33px;
  }

  .brand-name{
    font-family:'Oswald', sans-serif;
    font-weight:600;
    font-size:19px;
    letter-spacing:0.02em;
  }
  .brand-name small{
    display:block;
    font-family:'IBM Plex Mono', monospace;
    font-size:9.5px;
    letter-spacing:0.14em;
    color:var(--survey);
    font-weight:400;
    margin-top:2px;
  }
  nav ul{
    list-style:none; display:flex; gap:30px;
  }
  nav a{
    text-decoration:none;
    font-size:13px;
    letter-spacing:0.06em;
    text-transform:uppercase;
    font-weight:500;
    color:var(--asphalt);
    border-bottom:2px solid transparent;
    padding-bottom:3px;
    transition:border-color 0.2s;
  }
  nav a:hover{ border-color:var(--amber); }
  .nav-toggle{ display:none; }
  @media (max-width:760px){
    nav ul{display:none;}
    .nav-toggle{ display:block; background:none; border:1px solid var(--asphalt); padding:8px 12px; font-family:'IBM Plex Mono',monospace; font-size:11px; letter-spacing:0.08em; cursor:pointer;}
  }

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    background:var(--asphalt);
    color:var(--paper);
    padding:88px 0 0;
    overflow:hidden;
  }
  .hero-grid{
    display:grid;
    grid-template-columns:1.15fr 0.85fr;
    gap:40px;
    align-items:center;
  }
  @media (max-width:900px){ .hero-grid{grid-template-columns:1fr;} }

  .eyebrow{
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;
    letter-spacing:0.16em;
    color:var(--amber);
    text-transform:uppercase;
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:22px;
  }
  .eyebrow::before{
    content:"";
    width:26px; height:1px;
    background:var(--amber);
  }
  .hero h1{
    font-size:clamp(38px, 5.6vw, 66px);
    line-height:0.98;
    font-weight:700;
    color:var(--paper);
  }
  .hero h1 em{
    font-style:normal;
    color:var(--amber);
  }
  .hero p.lede{
    margin-top:26px;
    max-width:46ch;
    font-size:17px;
    color:var(--concrete);
    line-height:1.65;
  }
  .hero-cta{
    margin-top:34px;
    display:flex;
    gap:16px;
    flex-wrap:wrap;
  }
  .btn{
    display:inline-block;
    padding:14px 26px;
    font-family:'IBM Plex Mono', monospace;
    font-size:12.5px;
    letter-spacing:0.08em;
    text-transform:uppercase;
    text-decoration:none;
    border:1px solid var(--amber);
    transition:all 0.2s;
  }
  .btn-solid{ background:var(--amber); color:var(--asphalt); font-weight:500; }
  .btn-solid:hover{ background:var(--amber-dim); }
  .btn-line{ color:var(--paper); border-color:var(--line-on-dark); }
  .btn-line:hover{ border-color:var(--paper); }

  .hero-plate{
    border:1px solid var(--line-on-dark);
    padding:26px;
    background:rgba(255,255,255,0.02);
  }
  .plate-row{
    display:flex; justify-content:space-between;
    padding:13px 0;
    border-bottom:1px solid var(--line-on-dark);
    font-size:13.5px;
  }
  .plate-row:last-child{ border-bottom:none; }
  .plate-row span:first-child{ color:var(--survey-light); font-family:'IBM Plex Mono',monospace; font-size:11px; letter-spacing:0.06em; text-transform:uppercase; }
  .plate-row span:last-child{ color:var(--paper); text-align:right; }

  /* route line svg */
  .route-line{
    position:absolute; left:0; right:0; bottom:0;
    height:70px;
    opacity:0.5;
  }

  /* ---------- Section basics ---------- */
  section{ padding:86px 0; }
  .section-head{
    display:flex;
    justify-content:space-between;
    align-items:flex-end;
    gap:24px;
    margin-bottom:48px;
    border-bottom:1px solid var(--line);
    padding-bottom:22px;
  }
  .section-head .num{
    font-family:'IBM Plex Mono', monospace;
    font-size:12px;
    color:var(--survey);
    letter-spacing:0.1em;
  }
  .section-head h2{
    font-size:clamp(26px,3.4vw,38px);
    margin-top:6px;
  }
  .section-head p{
    max-width:34ch;
    font-size:14.5px;
    color:#4b524d;
    text-align:right;
  }
  @media (max-width:700px){
    .section-head{flex-direction:column; align-items:flex-start;}
    .section-head p{text-align:left;}
  }

  /* ---------- About ---------- */
  .about-image{
    width: 100%;
    margin: 40px 0;
  }

  .about-image img{
    width: 100%;
    height: 500px;
    display: block;
    object-fit: cover;
    border-radius: 12px;
  }

  .about-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:56px;
  }
  @media (max-width:800px){ .about-grid{grid-template-columns:1fr;} }
  .about-grid p{
    font-size:15.5px;
    color:#333a35;
    margin-bottom:18px;
  }
  .callout{
    border-left:3px solid var(--amber);
    padding:16px 0 16px 20px;
    margin-top:26px;
  }
  .callout .label{
    font-family:'IBM Plex Mono', monospace;
    font-size:11px;
    letter-spacing:0.1em;
    text-transform:uppercase;
    color:var(--survey);
    display:block;
    margin-bottom:8px;
  }
  .callout p{ margin:0; font-size:14.5px; }

  /* ---------- Values ---------- */
  .values{ background:var(--asphalt-2); color:var(--paper); }
  .values .section-head{ border-color:var(--line-on-dark); }
  .values .section-head p{ color:var(--concrete); }
  .values .num{ color:var(--amber); }
  .value-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:1px;
    background:var(--line-on-dark);
    border:1px solid var(--line-on-dark);
  }
  @media (max-width:900px){ .value-grid{grid-template-columns:repeat(2,1fr);} }
  @media (max-width:520px){ .value-grid{grid-template-columns:1fr;} }
  .value-card{
    background:var(--asphalt-2);
    padding:30px 24px;
  }
  .value-card .tag{
    font-family:'IBM Plex Mono', monospace;
    font-size:11px;
    color:var(--amber);
    letter-spacing:0.08em;
  }
  .value-card h3{
    font-size:16px;
    margin:14px 0 12px;
    color:var(--paper);
  }
  .value-card p{
    font-size:13.5px;
    color:var(--concrete);
  }

  /* ---------- Corporate details table ---------- */
  .detail-table{ width:100%; border-collapse:collapse; }
  .detail-table tr{ border-bottom:1px solid var(--line); }
  .detail-table tr:first-child{ border-top:1px solid var(--line); }
  .detail-table td{ padding:18px 0; vertical-align:top; }
  .detail-table td:first-child{
    width:280px;
    font-family:'IBM Plex Mono', monospace;
    font-size:11.5px;
    letter-spacing:0.06em;
    text-transform:uppercase;
    color:var(--survey);
  }
  .detail-table td:last-child{ font-size:15px; }
  @media (max-width:640px){
    .detail-table td:first-child{width:130px; font-size:10.5px;}
    .detail-table td{padding:14px 0;}
  }

  /* ---------- Registrations ---------- */
  .reg-list{ display:flex; flex-direction:column; }
  .reg-item{
    display:grid;
    grid-template-columns:28px 1fr 2fr;
    gap:20px;
    align-items:start;
    padding:20px 0;
    border-bottom:1px solid var(--line);
  }
  .reg-item:first-child{ border-top:1px solid var(--line); }
  .reg-check{
    width:16px; height:16px;
    border:1.5px solid var(--survey);
    position:relative;
    margin-top:3px;
  }
  .reg-check::after{
    content:"";
    position:absolute; left:2px; top:5px;
    width:9px; height:5px;
    border-left:2px solid var(--amber-dim);
    border-bottom:2px solid var(--amber-dim);
    transform:rotate(-45deg);
  }
  .reg-item h4{
    font-family:'Oswald', sans-serif;
    font-size:15px;
    font-weight:500;
    letter-spacing:0.01em;
    text-transform:none;
  }
  .reg-item p{ font-size:14px; color:#4b524d; }
  @media (max-width:640px){
    .reg-item{grid-template-columns:20px 1fr; }
    .reg-item p{grid-column:2; }
  }

  /* ---------- Capabilities + stats ---------- */
  .cap-wrap{
    display:grid;
    grid-template-columns:1.3fr 0.7fr;
    gap:56px;
  }
  @media (max-width:900px){ .cap-wrap{grid-template-columns:1fr;} }
  .cap-block{ padding:26px 0; border-bottom:1px solid var(--line); }
  .cap-block:first-child{ padding-top:0; }
  .cap-block h3{
    font-size:19px; margin-bottom:10px;
  }
  .cap-block p{ font-size:14.5px; color:#3a413c; }

  .stats{ display:flex; flex-direction:column; gap:1px; background:var(--line); border:1px solid var(--line); }
  .stat{
    background:var(--paper);
    padding:26px 24px;
  }
  .stat .big{
    font-family:'Oswald', sans-serif;
    font-size:38px;
    font-weight:600;
    color:var(--survey);
  }
  .stat .lbl{
    font-family:'IBM Plex Mono', monospace;
    font-size:11px;
    letter-spacing:0.08em;
    text-transform:uppercase;
    color:#4b524d;
    margin-top:6px;
  }

  /* ---------- Track record ---------- */
  .track{ background:var(--paper-dim); }
  .track-table{
    width:100%;
    border-collapse:collapse;
  }
  .track-table thead td{
    font-family:'IBM Plex Mono', monospace;
    font-size:11px;
    letter-spacing:0.08em;
    text-transform:uppercase;
    color:var(--survey);
    padding-bottom:16px;
    border-bottom:1px solid var(--asphalt);
  }
  .track-table tbody tr{ border-bottom:1px solid var(--line); }
  .track-table tbody td{
    padding:22px 18px 22px 0;
    vertical-align:top;
    font-size:14.5px;
  }
  .track-table tbody td:first-child{
    font-family:'Oswald', sans-serif;
    font-weight:500;
    font-size:15.5px;
    width:26%;
  }
  .track-table tbody td:nth-child(2){ width:22%; color:#4b524d; }
  @media (max-width:760px){
    .track-table thead{ display:none; }
    .track-table tbody td{ display:block; padding:4px 0; width:100% !important; }
    .track-table tbody tr{ padding:18px 0; display:block; }
    .track-table tbody td:first-child{ padding-top:16px; }
    .track-table tbody td:before{
      content: attr(data-label);
      display:block;
      font-family:'IBM Plex Mono', monospace;
      font-size:10px;
      letter-spacing:0.08em;
      text-transform:uppercase;
      color:var(--survey);
      margin-bottom:4px;
    }
  }

  /* ---------- Contact / footer ---------- */
  footer{
    background:var(--asphalt);
    color:var(--paper);
    padding:80px 0 0;
  }
  .foot-grid{
    display:grid;
    grid-template-columns:1.2fr 1fr 1fr;
    gap:40px;
    padding-bottom:60px;
    border-bottom:1px solid var(--line-on-dark);
  }
  @media (max-width:760px){ .foot-grid{grid-template-columns:1fr;} }
  .foot-grid h3{
    font-size:14px;
    color:var(--amber);
    margin-bottom:18px;
    letter-spacing:0.08em;
  }
  .foot-grid p, .foot-grid a{
    font-size:14.5px;
    color:var(--concrete);
    text-decoration:none;
    display:block;
    margin-bottom:10px;
  }
  .foot-grid a:hover{ color:var(--paper); }
  .sign-block{
    margin-top:6px;
  }
  .sign-block .name{
    font-family:'Oswald', sans-serif;
    font-size:22px;
    color:var(--paper);
    margin-bottom:4px;
  }
  .sign-block .role{
    font-family:'IBM Plex Mono', monospace;
    font-size:11px;
    letter-spacing:0.08em;
    text-transform:uppercase;
    color:var(--survey-light);
  }
  .foot-bottom{
    padding:22px 0;
    display:flex;
    justify-content:space-between;
    font-family:'IBM Plex Mono', monospace;
    font-size:11px;
    letter-spacing:0.04em;
    color:var(--survey-light);
    flex-wrap:wrap;
    gap:10px;
  }

  .reveal{
    opacity:0;
    transform:translateY(16px);
    transition:opacity 0.6s ease, transform 0.6s ease;
  }
  .reveal.in{ opacity:1; transform:translateY(0); }