:root{
    --navy-900:#0A1428;
    --navy-700:#12233F;
    --ink:#0B2340;
    --paper:#F5F7FA;
    --paper-dim:#E7ECF1;
    --signal:#1F5FD9;
    --signal-bright:#29D8FF;
    --slate:#55647A;
    --slate-light:#8B9AB0;
    --line: rgba(255,255,255,0.14);
    --line-dark: rgba(11,35,64,0.12);
    color-scheme: light;
  }
  @media (prefers-color-scheme: dark){
    :root:not([data-theme="light"]){ --paper:#F5F6F3; --paper-dim:#E7E9E4; }
  }
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;}
  body{
    background:var(--paper);
    color:var(--ink);
    font-family:'IBM Plex Sans', -apple-system, sans-serif;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  h1,h2,h3,.display{
    font-family:'Space Grotesk', 'IBM Plex Sans', sans-serif;
    font-weight:600;
    line-height:1.08;
    margin:0;
    letter-spacing:-0.01em;
  }
  p{margin:0; color:var(--slate); line-height:1.6;}
  a{color:inherit; text-decoration:none;}
  .wrap{max-width:1140px; margin:0 auto; padding:0 28px;}
  section{position:relative;}

  /* ---------- Mark ---------- */
  .mark{display:inline-flex; align-items:center; gap:10px;}
  .logo-icon{height:38px; width:auto; display:block;}
  .mark-word{font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:17px; letter-spacing:0.01em; color:var(--ink); white-space:nowrap;}
  .mark-word-light{font-weight:500; color:var(--slate);}

  /* ---------- Header ---------- */
  header{
    position:sticky; top:0; z-index:50;
    background:rgba(245,247,250,0.94);
    backdrop-filter: blur(6px);
    border-bottom:1px solid var(--line-dark);
  }
  header .wrap{display:flex; align-items:center; justify-content:space-between; height:76px;}
  nav{display:flex; align-items:center; gap:34px;}
  nav a.nav-link{color:var(--ink); font-size:15px; font-weight:500; opacity:0.75;}
  nav a.nav-link:hover{opacity:1;}
  .btn{
    display:inline-flex; align-items:center; justify-content:center;
    padding:12px 22px; border-radius:3px; font-weight:600; font-size:15px;
    border:1px solid transparent; white-space:nowrap;
  }
  .btn-primary{background:var(--signal); color:#fff;}
  .btn-primary:hover{background:#164FBD;}
  .btn-ghost{border-color:var(--line-dark); color:var(--ink);}
  .btn-ghost:hover{border-color:var(--ink);}
  .header-cta{display:flex; gap:12px;}
  .nav-toggle{display:none; background:none; border:none; color:var(--ink); font-size:26px;}

  /* ---------- Hero ---------- */
  .hero{
    background:var(--navy-900); color:#fff;
    padding:96px 0 110px;
    overflow:hidden;
  }
  .hero .wrap{display:grid; grid-template-columns:1.15fr 0.85fr; gap:56px; align-items:center;}
  .eyebrow{font-size:15px; color:var(--signal-bright); font-weight:500; margin-bottom:18px;}
  .hero h1{font-size:clamp(34px,4.6vw,54px); color:#fff; max-width:620px;}
  .hero .lede{margin-top:22px; font-size:18px; color:#B9C4CB; max-width:520px; line-height:1.65;}
  .hero-actions{display:flex; gap:14px; margin-top:34px; flex-wrap:wrap;}
  .hero-meta{margin-top:44px; display:flex; gap:34px; flex-wrap:wrap; border-top:1px solid var(--line); padding-top:26px; max-width:560px;}
  .hero-meta div{font-size:14px; color:var(--slate-light);}
  .hero-meta strong{display:block; color:#fff; font-size:15px; font-weight:600; margin-bottom:2px;}
  .hero-art{position:relative; height:380px;}
  .hero-art svg{width:100%; height:100%;}

  /* ---------- Section headers ---------- */
  .section-head{max-width:620px; margin-bottom:52px;}
  .section-label{font-size:14px; color:var(--signal); font-weight:600; margin-bottom:10px;}
  .section-label.on-dark{color:var(--signal-bright);}
  .section-head h2{font-size:clamp(26px,3vw,36px);}
  .section-head p{margin-top:14px; font-size:16.5px;}

  /* ---------- Services (index list, not card grid) ---------- */
  .services{padding:100px 0; background:var(--paper);}
  .service-tabs{display:flex; gap:8px; margin-bottom:8px;}
  .tab-btn{
    font-family:'IBM Plex Sans',sans-serif; font-size:15px; font-weight:600;
    padding:11px 20px; border-radius:3px; border:1px solid var(--line-dark);
    background:transparent; color:var(--slate); cursor:pointer;
  }
  .tab-btn[aria-selected="true"]{background:var(--navy-900); color:#fff; border-color:var(--navy-900);}
  .service-panel{display:none;}
  .service-panel.is-active{display:block;}
  .service-list{border-top:1px solid var(--line-dark);}
  .service-row{
    display:grid; grid-template-columns: 64px 1fr 1.4fr auto;
    gap:28px; align-items:start;
    padding:30px 0; border-bottom:1px solid var(--line-dark);
  }
  .service-row .num{font-family:'Space Grotesk',sans-serif; font-size:14px; color:var(--slate-light); padding-top:4px;}
  .service-row h3{font-size:19px; color:var(--ink);}
  .service-row p{font-size:15px;}
  .service-row .tags{font-size:13px; color:var(--slate-light); align-self:center; text-align:right;}
  @media (max-width:760px){
    .service-row{grid-template-columns: 1fr; gap:8px;}
    .service-row .tags{text-align:left;}
  }

  /* ---------- Why band ---------- */
  .why{background:var(--navy-700); color:#fff; padding:100px 0;}
  .why-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:40px;}
  .why-item h3{color:#fff; font-size:19px; margin-bottom:12px;}
  .why-item p{color:#AEBAC2; font-size:15.5px;}
  .why-item .mini-mark{margin-bottom:18px;}
  @media (max-width:760px){.why-grid{grid-template-columns:1fr; gap:36px;}}

  /* ---------- Industries ---------- */
  .industries{padding:100px 0; background:var(--paper);}
  .chip-row{display:flex; flex-wrap:wrap; gap:12px;}
  .chip{
    border:1px solid var(--line-dark); border-radius:3px;
    padding:12px 18px; font-size:15px; color:var(--ink); font-weight:500;
  }

  /* ---------- Process ---------- */
  .process{background:var(--navy-900); color:#fff; padding:100px 0;}
  .process-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:0;}
  .process-item{padding:0 24px 0 0; border-left:1px solid var(--line); padding-left:24px;}
  .process-item:first-child{border-left:none; padding-left:0;}
  .process-item .step-num{font-family:'Space Grotesk',sans-serif; color:var(--signal-bright); font-size:15px; margin-bottom:16px;}
  .process-item h3{color:#fff; font-size:18px; margin-bottom:10px;}
  .process-item p{color:#AEBAC2; font-size:15px;}
  @media (max-width:760px){
    .process-grid{grid-template-columns:1fr; gap:32px;}
    .process-item{border-left:none; padding-left:0; border-top:1px solid var(--line); padding-top:24px;}
    .process-item:first-child{border-top:none; padding-top:0;}
  }

  /* ---------- About preview ---------- */
  .about{padding:100px 0; background:var(--paper);}
  .about .wrap{display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center;}
  .about-copy p{font-size:16.5px; margin-bottom:16px;}
  .draft-flag{
    display:inline-block; margin-top:18px; font-size:13px; color:var(--slate-light);
    border:1px dashed var(--line-dark); padding:8px 12px; border-radius:3px;
  }
  .about-art{background:var(--paper-dim); border-radius:4px; height:280px; display:flex; align-items:center; justify-content:center;}
  @media (max-width:760px){ .about .wrap{grid-template-columns:1fr;} }

  /* ---------- Contact band ---------- */
  .contact{background:var(--signal); color:#fff; padding:88px 0;}
  .contact .wrap{display:grid; grid-template-columns:1.2fr 1fr; gap:50px; align-items:center;}
  .contact h2{font-size:clamp(26px,3.2vw,38px); color:#fff;}
  .contact p{color:rgba(255,255,255,0.85); margin-top:14px; font-size:16.5px;}
  .contact-actions{display:flex; gap:14px; margin-top:28px; flex-wrap:wrap;}
  .btn-dark{background:#fff; color:var(--navy-900);}
  .btn-dark:hover{background:var(--paper-dim);}
  .btn-outline-dark{border:1px solid rgba(255,255,255,0.6); color:#fff;}
  .btn-outline-dark:hover{border-color:#fff;}
  .contact-details{border-left:1px solid rgba(255,255,255,0.3); padding-left:40px;}
  .contact-details div{margin-bottom:18px; font-size:15px;}
  .contact-details strong{display:block; font-size:13px; color:rgba(255,255,255,0.75); margin-bottom:4px; font-weight:600;}
  .contact-details a{font-size:16px; font-weight:600; color:#fff;}
  @media (max-width:760px){
    .contact .wrap{grid-template-columns:1fr;}
    .contact-details{border-left:none; padding-left:0; border-top:1px solid rgba(255,255,255,0.3); padding-top:24px;}
  }

  /* ---------- Footer ---------- */
  footer{background:var(--navy-900); color:#8FA0AA; padding:56px 0 34px;}
  .footer-top{display:flex; justify-content:space-between; flex-wrap:wrap; gap:32px; padding-bottom:36px; border-bottom:1px solid var(--line);}
  .footer-top .mark{color:#fff;}
  .footer-nav{display:flex; gap:28px; flex-wrap:wrap;}
  .footer-nav a{font-size:14.5px; color:#AEBAC2;}
  .footer-bottom{display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; padding-top:22px; font-size:13.5px;}

  /* ---------- Mobile nav ---------- */
  @media (max-width:820px){
    nav{display:none;}
    .nav-toggle{display:block;}
    .header-cta{display:none;}
  }
  .nav-toggle{cursor:pointer; line-height:1; padding:6px;}
  .mobile-menu{
    display:none;
    position:fixed; top:76px; left:0; right:0; bottom:0;
    background:var(--paper);
    z-index:60;
    overflow-y:auto;
    padding:8px 0 40px;
  }
  .mobile-menu.is-open{display:block;}
  .mobile-menu .wrap{display:flex; flex-direction:column; padding-top:14px;}
  .mobile-menu a.nav-link{
    display:block; padding:16px 0; font-size:18px; font-weight:600; color:var(--ink);
    border-bottom:1px solid var(--line-dark);
  }
  .mobile-menu .mobile-actions{display:flex; flex-direction:column; gap:12px; margin-top:24px;}
  .mobile-menu .btn{width:100%;}
  body.menu-open{overflow:hidden;}

  @media (max-width:900px){
    .hero .wrap{grid-template-columns:1fr; gap:40px;}
    .hero-art{height:260px; order:-1;}
  }
  @media (max-width:520px){
    .hero-art{height:200px;}
    .hero-meta{gap:22px;}
    .wrap{padding:0 18px;}
    .mark-word{font-size:14.5px;}
    .logo-icon{height:32px;}
  }

/* ---------- Page title band (Services / About / Contact) ---------- */
.page-head{background:var(--navy-900); color:#fff; padding:64px 0 56px;}
.page-head .eyebrow{color:var(--signal-bright); margin-bottom:14px;}
.page-head h1{font-size:clamp(30px,4.2vw,44px); color:#fff;}
.page-head p{margin-top:14px; color:#B9C4CB; font-size:16.5px; max-width:560px;}

/* ---------- Home services preview tiles ---------- */
.services-preview{padding:100px 0; background:var(--paper);}
.preview-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-bottom:34px;}
.preview-tile{
  border:1px solid var(--line-dark); border-radius:4px; padding:26px 22px;
  background:#fff;
}
.preview-tile h3{font-size:17px; color:var(--ink); margin-bottom:8px;}
.preview-tile p{font-size:14.5px;}
.preview-foot{display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:16px; border-top:1px solid var(--line-dark); padding-top:28px;}
.preview-foot p{font-size:15px; max-width:460px;}
@media (max-width:900px){ .preview-grid{grid-template-columns:1fr 1fr;} }
@media (max-width:600px){ .preview-grid{grid-template-columns:1fr;} }

/* ---------- Compact contact CTA (used on Home) ---------- */
.contact-compact .wrap{grid-template-columns:1fr; text-align:center;}
.contact-compact p{margin-left:auto; margin-right:auto;}
.contact-compact .contact-actions{justify-content:center;}

/* ---------- Active nav state ---------- */
nav a.nav-link.is-current, .mobile-menu a.nav-link.is-current{opacity:1; color:var(--signal);}