:root{
    --navy:#003366;
    --navy-2:#1F4E79;
    --ink:#16202B;
    --muted:#5A6B7C;
    --paper:#FBFAF8;
    --sand:#F3EFE8;
    --line:#E3DDD3;
    --waarde:#1F6B4E;
    --fundament:#5B3E86;
    --maxw:980px;
    --serif: Georgia, 'Iowan Old Style', 'Times New Roman', serif;
    --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, Roboto, Helvetica, Arial, sans-serif;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0; background:var(--paper); color:var(--ink);
    font-family:var(--sans); font-size:17px; line-height:1.65;
    -webkit-font-smoothing:antialiased;
  }
  .wrap{max-width:var(--maxw); margin:0 auto; padding:0 28px}
  h1,h2,h3,h4{font-family:var(--serif); font-weight:600; line-height:1.2; margin:0}
  a{color:var(--navy)}
  p{margin:0 0 1.1em}
  .lang-hidden{display:none !important}

  /* ---------- header ---------- */
  header{
    position:sticky; top:0; z-index:50;
    background:rgba(251,250,248,.93); backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .navrow{display:flex; align-items:center; justify-content:space-between; height:62px; gap:20px}
  .brand{font-family:var(--serif); font-size:17px; font-weight:600; color:var(--navy); text-decoration:none; white-space:nowrap}
  .brand span{color:var(--muted); font-weight:400; font-size:14px; font-family:var(--sans)}
  nav{display:flex; align-items:center; gap:22px; font-size:14.5px}
  nav a{color:var(--muted); text-decoration:none}
  nav a:hover{color:var(--navy)}
  .langtoggle{display:flex; border:1px solid var(--line); border-radius:999px; overflow:hidden; flex:none}
  .langtoggle button{
    font:inherit; font-size:12.5px; letter-spacing:.04em; font-weight:600;
    padding:5px 11px; border:0; background:transparent; color:var(--muted); cursor:pointer;
  }
  .langtoggle button[aria-pressed="true"]{background:var(--navy); color:#fff}
  @media(max-width:820px){ nav .navlink{display:none} }

  /* ---------- hero ---------- */
  .hero{padding:76px 0 54px; border-bottom:1px solid var(--line)}
  .kicker{
    font-size:12.5px; letter-spacing:.14em; text-transform:uppercase;
    color:var(--navy-2); font-weight:600; margin-bottom:22px;
  }
  .hero h1{font-size:clamp(34px,5.4vw,54px); letter-spacing:-.015em; max-width:16ch}
  .hero .lead{font-size:19.5px; max-width:60ch; margin-top:26px; color:#22303D}
  .hero .lead strong{font-weight:600; color:var(--ink)}
  .btnrow{display:flex; flex-wrap:wrap; gap:12px; margin-top:34px}
  .btn{
    display:inline-block; text-decoration:none; font-size:15px; font-weight:500;
    padding:11px 20px; border-radius:3px; border:1px solid var(--navy);
  }
  .btn-primary{background:var(--navy); color:#fff}
  .btn-primary:hover{background:#00274d}
  .btn-ghost{background:transparent; color:var(--navy)}
  .btn-ghost:hover{background:var(--sand)}

  /* ---------- stats ---------- */
  .stats{background:var(--navy); color:#fff; padding:38px 0}
  .statgrid{display:grid; grid-template-columns:repeat(3,1fr); gap:34px}
  .stat .n{font-family:var(--serif); font-size:40px; line-height:1; color:#fff}
  .stat .t{font-size:14.5px; color:#C3D3E3; margin-top:9px; line-height:1.45}
  .srcline{font-size:12.5px; color:#8FA9C4; margin-top:28px; border-top:1px solid rgba(255,255,255,.16); padding-top:14px}
  @media(max-width:720px){ .statgrid{grid-template-columns:1fr; gap:26px} }

  /* ---------- sections ---------- */
  section{padding:70px 0; border-bottom:1px solid var(--line)}
  section.alt{background:var(--sand)}
  .sectag{
    font-size:12.5px; letter-spacing:.14em; text-transform:uppercase;
    color:var(--muted); font-weight:600; margin-bottom:16px;
  }
  section h2{font-size:clamp(26px,3.5vw,34px); letter-spacing:-.01em; max-width:22ch}
  .intro{font-size:18px; max-width:64ch; margin-top:20px}

  /* failure list */
  .faillist{margin-top:36px; border-top:1px solid var(--line)}
  .faillist li{
    list-style:none; display:grid; grid-template-columns:36px 1fr;
    gap:16px; padding:15px 0; border-bottom:1px solid var(--line); align-items:baseline;
  }
  .faillist ol,.faillist ul{margin:0; padding:0}
  .faillist .num{font-family:var(--serif); color:var(--navy-2); font-size:17px}
  .faillist b{font-weight:600}
  .faillist .why{color:var(--muted); font-size:15.5px; display:block; margin-top:2px}
  .pullnote{
    margin-top:30px; padding:18px 22px; background:#fff; border-left:3px solid var(--navy);
    font-size:16.5px;
  }
  section.alt .pullnote{background:#FBFAF8}

  /* bio */
  .biogrid{display:grid; grid-template-columns:1.35fr 1fr; gap:52px; margin-top:34px}
  @media(max-width:860px){ .biogrid{grid-template-columns:1fr; gap:34px} }
  .factcard{background:#fff; border:1px solid var(--line); padding:24px 26px}
  section.alt .factcard{background:#FBFAF8}
  .factcard h4{font-size:14px; text-transform:uppercase; letter-spacing:.1em; font-family:var(--sans); color:var(--muted); margin-bottom:14px}
  .factcard dl{margin:0; font-size:15.5px}
  .factcard dt{font-weight:600; margin-top:12px}
  .factcard dt:first-child{margin-top:0}
  .factcard dd{margin:0 0 0 0; color:var(--muted)}
  .plainbox{border:1px dashed var(--line); padding:20px 22px; margin-top:26px; font-size:16px; color:#26313C}
  .plainbox b{color:var(--ink)}

  /* three services */
  .three{display:grid; grid-template-columns:repeat(3,1fr); gap:26px; margin-top:38px}
  @media(max-width:860px){ .three{grid-template-columns:1fr} }
  .svc{background:#fff; border:1px solid var(--line); padding:26px}
  section.alt .svc{background:#FBFAF8}
  .svc .no{font-family:var(--serif); font-size:15px; color:var(--navy-2)}
  .svc h3{font-size:20px; margin:8px 0 12px}
  .svc p{font-size:15.5px; color:#31404E; margin:0}

  /* method */
  .legend{display:flex; flex-wrap:wrap; gap:22px; margin-top:26px; font-size:14.5px; color:var(--muted)}
  .legend i{display:inline-block; width:11px; height:11px; border-radius:2px; margin-right:8px; vertical-align:baseline}
  .dot-w{background:var(--waarde)} .dot-f{background:var(--fundament)}
  .phase{margin-top:40px}
  .phasehead{display:flex; align-items:baseline; gap:14px; flex-wrap:wrap; padding-bottom:10px; border-bottom:2px solid var(--navy)}
  .phasehead h3{font-size:22px}
  .phasehead .wk{font-size:14px; color:var(--muted)}
  details.task{border-bottom:1px solid var(--line); background:transparent}
  details.task summary{
    cursor:pointer; list-style:none; padding:14px 0 14px 0;
    display:grid; grid-template-columns:52px 1fr 22px; gap:14px; align-items:baseline;
  }
  details.task summary::-webkit-details-marker{display:none}
  .tnum{font-family:var(--serif); font-size:15px; font-weight:600; padding:2px 0 2px 10px; border-left:3px solid var(--waarde)}
  .f .tnum{border-left-color:var(--fundament)}
  .ttitle{font-weight:600; font-size:16.5px}
  .ttitle em{display:block; font-style:normal; font-weight:400; color:var(--muted); font-size:15px; margin-top:2px}
  .chev{color:var(--muted); font-size:13px; text-align:right; transition:transform .15s}
  details[open] .chev{transform:rotate(90deg)}
  .tbody{padding:2px 0 22px 66px; font-size:15.5px; color:#2A3742; max-width:70ch}
  @media(max-width:660px){ .tbody{padding-left:0} details.task summary{grid-template-columns:48px 1fr 18px} }
  .tbody .how{
    margin-top:14px; background:#fff; border:1px solid var(--line); padding:15px 18px; font-size:15px;
  }
  section.alt .tbody .how{background:#FBFAF8}
  .tbody .how b{display:block; font-size:12.5px; letter-spacing:.1em; text-transform:uppercase; color:var(--navy-2); margin-bottom:7px}

  /* spoorkeuze */
  .trackpick{display:flex; gap:0; margin:34px 0 8px; border:1px solid var(--line); border-radius:3px; overflow:hidden; max-width:520px; background:#fff}
  section.alt .trackpick{background:#FBFAF8}
  .trackpick button{
    flex:1; font:inherit; font-size:14.5px; font-weight:600; padding:13px 14px;
    border:0; background:transparent; color:var(--muted); cursor:pointer; text-align:center; line-height:1.3;
  }
  .trackpick button span{display:block; font-weight:400; font-size:12.5px; margin-top:3px; opacity:.85}
  .trackpick button[aria-pressed="true"]{background:var(--navy); color:#fff}
  .trackhint{font-size:14.5px; color:var(--muted); margin:0 0 6px}
  .track[hidden]{display:none}
  .kpi{display:flex; flex-wrap:wrap; gap:26px; margin:26px 0 6px; padding:16px 0; border-top:1px solid var(--line); border-bottom:1px solid var(--line)}
  .kpi div{font-size:14.5px; color:var(--muted)}
  .kpi b{display:block; font-family:var(--serif); font-size:22px; color:var(--navy); font-weight:600}

  /* faq */
  details.faq{border-bottom:1px solid var(--line)}
  details.faq summary{cursor:pointer; list-style:none; padding:17px 26px 17px 0; font-weight:600; font-size:17px; position:relative}
  details.faq summary::-webkit-details-marker{display:none}
  details.faq summary::after{content:'+'; position:absolute; right:2px; top:15px; font-size:19px; color:var(--muted); font-weight:400}
  details.faq[open] summary::after{content:'–'}
  .faqbody{padding:0 0 22px; font-size:16px; color:#2A3742; max-width:72ch}
  .faqbody p{margin:0 0 .9em}
  .faqbody ul{margin:.4em 0 1em; padding-left:20px}
  .faqbody li{margin-bottom:.45em}
  .datebadge{display:inline-block; font-size:12.5px; letter-spacing:.06em; text-transform:uppercase;
    color:var(--navy-2); border:1px solid var(--line); padding:4px 10px; border-radius:2px; background:#fff; margin-bottom:22px}
  section.alt .datebadge{background:#FBFAF8}
  .lawnote{background:#fff; border-left:3px solid var(--navy); padding:16px 20px; margin:18px 0; font-size:15.5px}
  section.alt .lawnote{background:#FBFAF8}

  /* colofon */
  .colofon{margin-top:52px; border-top:2px solid var(--navy); padding-top:26px}
  .colofon h3{font-size:20px; margin-bottom:14px}
  .colofon p{font-size:15.5px; color:#31404E; max-width:70ch}
  .colofon .mine{border-left:3px solid var(--navy); padding-left:18px; margin-top:20px}

  /* diy */
  .diy{counter-reset:d; margin-top:34px; padding:0; list-style:none}
  .diy li{counter-increment:d; display:grid; grid-template-columns:44px 1fr; gap:18px; padding:20px 0; border-top:1px solid var(--line)}
  .diy li:last-child{border-bottom:1px solid var(--line)}
  .diy li::before{
    content:counter(d); font-family:var(--serif); font-size:22px; color:var(--navy-2);
  }
  .diy h4{font-size:17.5px; margin-bottom:6px}
  .diy p{font-size:15.5px; color:#31404E; margin:0}

  /* standpunten */
  .views{display:grid; grid-template-columns:repeat(2,1fr); gap:0 46px; margin-top:34px}
  @media(max-width:800px){ .views{grid-template-columns:1fr} }
  .view{padding:22px 0; border-top:1px solid var(--line)}
  .view h3{font-family:var(--serif); font-size:20px; color:var(--navy); margin-bottom:8px}
  .view p{font-size:15.5px; color:#31404E; margin:0}

  /* contact */
  .contact{background:var(--navy); color:#fff; border-bottom:0}
  .contact h2{color:#fff}
  .contact .intro{color:#CBDAE8}
  .contact a{color:#fff}
  .cbtn{
    display:inline-block; margin-top:26px; background:#fff; color:var(--navy);
    text-decoration:none; font-weight:600; padding:12px 22px; border-radius:3px; font-size:16px;
  }
  footer{padding:34px 0 46px; font-size:13.5px; color:var(--muted)}
  footer p{margin:0 0 .6em}

/* ---------- artikelpagina ---------- */
.paperhead{padding:70px 0 44px; border-bottom:1px solid var(--line)}
.paperhead h1{font-size:clamp(30px,4.4vw,44px); letter-spacing:-.015em; max-width:20ch}
.paperhead .sub{font-size:19px; color:#22303D; max-width:62ch; margin-top:22px}
.meta{font-size:13.5px; color:var(--muted); margin-top:26px; display:flex; gap:20px; flex-wrap:wrap}
article{padding:56px 0}
article h2{font-size:clamp(23px,3vw,30px); margin:52px 0 16px; max-width:24ch}
article h2:first-child{margin-top:0}
article h3{font-size:19px; margin:32px 0 10px}
article p{max-width:70ch}
article ul,article ol{max-width:70ch; padding-left:22px}
article li{margin-bottom:.5em}
.lead-p{font-size:18.5px; color:#22303D; max-width:64ch}
.numlist{counter-reset:n; list-style:none; padding:0; margin:26px 0}
.numlist li{counter-increment:n; display:grid; grid-template-columns:38px 1fr; gap:16px; padding:16px 0; border-top:1px solid var(--line); margin:0}
.numlist li:last-child{border-bottom:1px solid var(--line)}
.numlist li::before{content:counter(n); font-family:var(--serif); font-size:17px; color:var(--navy-2)}
.numlist b{display:block; margin-bottom:3px}
.layers{margin:28px 0; border:1px solid var(--line)}
.layer{padding:16px 20px; border-bottom:1px solid var(--line); background:#fff}
.layer:last-child{border-bottom:0}
.layer b{display:block; font-family:var(--serif); font-size:17px; color:var(--navy); margin-bottom:5px}
.layer span{font-size:14.5px; color:var(--muted)}
.layer.dim{background:var(--sand)}
pre{background:#0E1E2E; color:#DCE6F0; padding:18px 20px; overflow-x:auto; font-size:13.5px; line-height:1.55; margin:20px 0; border-radius:2px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
p code,li code,td code{background:var(--sand); padding:1px 5px; font-size:.9em; border-radius:2px}
table.tbl{width:100%; border-collapse:collapse; margin:22px 0; font-size:15px}
table.tbl th{text-align:left; border-bottom:2px solid var(--navy); padding:9px 12px 9px 0; font-size:13px; text-transform:uppercase; letter-spacing:.07em; color:var(--navy-2)}
table.tbl td{border-bottom:1px solid var(--line); padding:11px 12px 11px 0; vertical-align:top}
.tblwrap{overflow-x:auto}
.callout{border-left:3px solid var(--navy); background:#fff; padding:18px 22px; margin:24px 0; max-width:72ch}
.callout b{display:block; margin-bottom:6px}
.trap{border:1px solid var(--line); padding:20px 22px; margin:18px 0; background:#fff}
.trap .tag{font-size:12.5px; letter-spacing:.1em; text-transform:uppercase; color:#9A3B2F; font-weight:600; margin-bottom:8px}
.navset{display:flex; gap:22px; align-items:center}
nav a.active{color:var(--navy); font-weight:600}
.toc{background:var(--sand); padding:22px 26px; margin:30px 0}
.toc b{display:block; font-size:13px; text-transform:uppercase; letter-spacing:.1em; color:var(--muted); margin-bottom:12px}
.toc ol{margin:0; padding-left:20px; font-size:15.5px; columns:2; column-gap:34px}
@media(max-width:700px){ .toc ol{columns:1} }
.toc a{text-decoration:none}
.toc a:hover{text-decoration:underline}