/* Buro Z site-preview — huisstijl: geel #fae100, turquoise #4bc8c8, petrol #387171 */

@font-face {
  font-family: 'Roboto';
  src: url('roboto-latin.woff2') format('woff2');
  font-weight: 300 900;
  font-display: swap;
}

:root {
  --geel: #fae100;
  --geel-donker: #e8d100;
  --turquoise: #4bc8c8;
  --turquoise-donker: #3fbdbd;
  --petrol: #387171;
  --ink: #1e3c3c;
  --grijs: #5f6b6b;
  --lichtgrijs: #eef7f7;
  --wit: #ffffff;
  --max: 1080px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  color: var(--ink);
  background: var(--wit);
  line-height: 1.65;
  font-size: 17px;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
header.site {
  background: var(--petrol);
  position: sticky; top: 0; z-index: 50;
  box-shadow: 0 1px 0 rgba(0,0,0,.08);
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 64px; gap: 24px;
}
.logo img { height: 34px; width: auto; display: block; }
nav.main { display: flex; gap: 4px; flex-wrap: wrap; }
nav.main a {
  color: #eaf6f6; text-decoration: none; font-weight: 500;
  padding: 8px 9px; border-radius: 6px; font-size: 15px; white-space: nowrap;
}
nav.main a:hover { background: rgba(255,255,255,.12); }
nav.main a.actief { background: rgba(255,255,255,.16); }
nav.main a.cta {
  background: var(--geel); color: var(--ink); font-weight: 700; margin-left: 8px;
}
nav.main a.cta:hover { background: var(--geel-donker); }

/* ---------- hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--petrol) 0%, #2b5a5a 100%);
  color: var(--wit); position: relative; overflow: hidden;
}
.hero .wrap { padding: 84px 24px 96px; position: relative; z-index: 2; max-width: 880px; }
.hero .kicker {
  display: inline-block; background: var(--geel); color: var(--ink);
  font-weight: 700; font-size: 13.5px; letter-spacing: .06em; text-transform: uppercase;
  padding: 5px 12px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.15; font-weight: 800; margin-bottom: 18px; }
.hero h1 em { font-style: normal; color: var(--geel); }
.hero p.sub { font-size: clamp(17px, 2.2vw, 20px); color: #d7ecec; max-width: 640px; margin-bottom: 30px; }
.hero .golf {
  position: absolute; bottom: -2px; left: 0; right: 0; z-index: 1;
  width: 100%; height: 70px; display: block;
}

/* ---------- knoppen ---------- */
.btn {
  display: inline-block; text-decoration: none; font-weight: 700;
  padding: 13px 26px; border-radius: 8px; font-size: 16px;
}
.btn.primair { background: var(--geel); color: var(--ink); }
.btn.primair:hover { background: var(--geel-donker); }
.btn.secundair { background: transparent; color: var(--wit); border: 2px solid rgba(255,255,255,.55); margin-left: 10px; }
.btn.secundair:hover { border-color: var(--wit); }
.btn.donker { background: var(--petrol); color: var(--wit); }
.btn.donker:hover { background: #2b5a5a; }
.knoppenrij { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.knoppenrij .btn.secundair { margin-left: 0; }

/* ---------- secties ---------- */
section { padding: 72px 0; }
section.grijs { background: var(--lichtgrijs); }
section.petrol { background: var(--petrol); color: var(--wit); }
.sectiekop { max-width: 720px; margin-bottom: 42px; }
.sectiekop .kicker {
  color: var(--petrol); font-weight: 700; text-transform: uppercase;
  letter-spacing: .07em; font-size: 13px; display: block; margin-bottom: 8px;
}
section.petrol .sectiekop .kicker { color: var(--geel); }
h2 { font-size: clamp(24px, 3.4vw, 33px); line-height: 1.2; font-weight: 800; }
h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.sectiekop p { margin-top: 12px; color: var(--grijs); font-size: 18px; }
section.petrol .sectiekop p { color: #cfe6e6; }

/* ---------- kaarten ---------- */
.kaarten { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 22px; }
.kaart {
  background: var(--wit); border: 1px solid #e0e9e9; border-radius: 12px;
  padding: 28px; display: flex; flex-direction: column; gap: 10px;
}
.kaart .cijfer {
  font-size: 34px; font-weight: 800; color: var(--petrol); line-height: 1.1;
}
.kaart .cijfer.geel { color: #a89b00; }
.kaart p { color: var(--grijs); font-size: 15.5px; }
.kaart a.meer { color: var(--petrol); font-weight: 700; text-decoration: none; margin-top: auto; }
.kaart a.meer:hover { text-decoration: underline; }
.kaart.accent { border-top: 5px solid var(--geel); }

/* ---------- case-blokken ---------- */
.case {
  background: var(--wit); border: 1px solid #e0e9e9; border-radius: 14px;
  padding: 34px; margin-bottom: 26px;
}
.case .label {
  display: inline-block; background: var(--lichtgrijs); color: var(--petrol);
  font-size: 13px; font-weight: 700; padding: 4px 12px; border-radius: 999px; margin-bottom: 14px;
}
.case h3 { font-size: 23px; }
.case .resultaat, .artikel .resultaat {
  background: var(--lichtgrijs); border-left: 5px solid var(--geel);
  padding: 14px 18px; border-radius: 0 10px 10px 0; margin-top: 16px; font-weight: 500;
}
.artikel .resultaat { margin-top: 34px; font-size: 17px; }
.artikellijst .kaart .kaart-resultaat {
  font-size: 14.5px; color: var(--petrol); font-weight: 600;
  border-left: 3px solid var(--geel); padding-left: 12px; margin: 14px 0;
}
.case dl { margin-top: 16px; }
.case dt { font-weight: 700; color: var(--petrol); margin-top: 14px; }
.case dd { color: var(--ink); margin-top: 4px; }

/* ---------- stappen ---------- */
.stappen { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; counter-reset: stap; }
.stap { background: var(--wit); border-radius: 12px; padding: 26px; border: 1px solid #e0e9e9; }
.stap::before {
  counter-increment: stap; content: counter(stap);
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%; background: var(--geel);
  color: var(--ink); font-weight: 800; font-size: 19px; margin-bottom: 14px;
}
.stap p { color: var(--grijs); font-size: 15px; }

/* ---------- quote ---------- */
blockquote.quote {
  border-left: 5px solid var(--turquoise); padding: 6px 0 6px 24px;
  font-size: 20px; font-weight: 500; max-width: 760px; margin: 0 auto;
}
blockquote.quote footer { font-size: 15px; color: var(--grijs); margin-top: 10px; font-weight: 400; }

/* ---------- checklijst ---------- */
ul.check { list-style: none; display: grid; gap: 10px; }
ul.check li { padding-left: 32px; position: relative; }
ul.check li::before {
  content: ""; position: absolute; left: 0; top: 5px; width: 18px; height: 18px;
  border-radius: 50%; background: var(--turquoise);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M4.5 9.5l3 3 6-6.5' fill='none' stroke='%23fff' stroke-width='2.4' stroke-linecap='round'/%3E%3C/svg%3E");
}
ul.kruis { list-style: none; display: grid; gap: 10px; }
ul.kruis li { padding-left: 32px; position: relative; }
ul.kruis li::before {
  content: ""; position: absolute; left: 0; top: 5px; width: 18px; height: 18px;
  border-radius: 50%; background: #c9d6d6;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M5.5 5.5l7 7M12.5 5.5l-7 7' fill='none' stroke='%23fff' stroke-width='2.4' stroke-linecap='round'/%3E%3C/svg%3E");
}

/* ---------- twee kolommen ---------- */
.tweekolom { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.tweekolom img, .tweekolom object, .tweekolom svg { width: 100%; border-radius: 12px; }
@media (max-width: 800px) { .tweekolom { grid-template-columns: 1fr; } }

/* ---------- diagram ---------- */
figure.diagram { background: var(--wit); border: 1px solid #e0e9e9; border-radius: 14px; padding: 26px; }
figure.diagram img { width: 100%; height: auto; display: block; }
figure.diagram figcaption { font-size: 14px; color: var(--grijs); margin-top: 12px; }

/* ---------- CTA-band ---------- */
.ctaband, .slot { background: var(--geel); }
.ctaband .wrap, .slot .wrap { padding: 56px 24px; display: grid; grid-template-columns: 1.4fr auto; gap: 26px; align-items: center; }
.ctaband h2, .slot h2 { color: var(--ink); }
.ctaband p, .slot p { color: #4c4400; margin-top: 8px; }
@media (max-width: 800px) { .ctaband .wrap, .slot .wrap { grid-template-columns: 1fr; } }

/* ---------- tabellen ---------- */
.tabelwrap { overflow-x: auto; }
table.net { border-collapse: collapse; width: 100%; font-size: 15.5px; }
table.net th { text-align: left; background: var(--petrol); color: var(--wit); padding: 10px 14px; }
table.net td { padding: 10px 14px; border-bottom: 1px solid #e0e9e9; }

/* ---------- formulier (mock) ---------- */
form.mock { display: grid; gap: 14px; max-width: 560px; }
form.mock label { font-weight: 600; font-size: 15px; }
form.mock input, form.mock select, form.mock textarea {
  width: 100%; padding: 12px 14px; border: 1.5px solid #c9d6d6; border-radius: 8px;
  font: inherit; background: var(--wit);
}
form.mock button {
  justify-self: start; background: var(--petrol); color: var(--wit); border: 0;
  font: inherit; font-weight: 700; padding: 13px 28px; border-radius: 8px; cursor: pointer;
}

/* ---------- footer ---------- */
footer.site { background: var(--ink); color: #b9c6c6; margin-top: 0; }
footer.site .wrap { padding: 52px 24px 36px; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 32px; }
footer.site h4 { color: var(--wit); font-size: 15px; margin-bottom: 12px; }
footer.site a { color: #b9c6c6; text-decoration: none; display: block; padding: 3px 0; font-size: 15px; }
footer.site a:hover { color: var(--geel); }
footer.site .onderregel { border-top: 1px solid #333f3f; padding: 18px 24px; text-align: center; font-size: 13.5px; color: #8a9797; }
footer.site img.flogo { height: 30px; width: auto; margin-bottom: 14px; }

/* ---------- artikel/tekstpagina ---------- */
.tekst { max-width: 760px; }
.tekst p + p { margin-top: 14px; }
.tekst h2 { margin-top: 40px; margin-bottom: 12px; }
.tekst h3 { margin-top: 26px; }
.tekst ul, .tekst ol { padding-left: 24px; margin-top: 10px; }
.tekst li + li { margin-top: 6px; }
.tekst code { font-size: 14.5px; background: var(--lichtgrijs); padding: 2px 6px; border-radius: 4px; }
.tekst .linkknop { color: var(--petrol); font-weight: 700; }

.notitie {
  background: #fffbe0; border: 1px dashed #d8c500; border-radius: 10px;
  padding: 14px 18px; font-size: 14.5px; color: #5c5300; margin: 22px 0;
}

@media (max-width: 700px) {
  header.site .wrap { flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }
  nav.main { gap: 0; }
  nav.main a { padding: 7px 9px; font-size: 14px; }
  .hero .wrap { padding: 56px 24px 80px; }
  section { padding: 52px 0; }
}

/* huisstijl: titels bold small caps */
h2 { text-transform: uppercase; letter-spacing: .015em; }

code { font-family: "SF Mono", Menlo, monospace; font-size: .88em; background: #eef7f7; border: 1px solid #d5e6e6; border-radius: 4px; padding: 1px 5px; color: #1e3c3c; }
section.petrol .kaart { background: rgba(255,255,255,.97); }
section.petrol .kaart, section.petrol .kaart h3 { color: var(--ink); }
.tweekolom img.foto { aspect-ratio: 4/5; object-fit: cover; }

/* ---------- mobiele navigatie ---------- */
.navknop {
  display: none; background: none; border: 2px solid rgba(255,255,255,.55);
  color: #fff; border-radius: 8px; padding: 7px 14px; font: inherit;
  font-weight: 700; font-size: 15px; cursor: pointer; align-items: center; gap: 8px;
}
.navknop:hover { border-color: #fff; }
@media (max-width: 880px) {
  header.site .wrap { flex-wrap: wrap; padding-top: 12px; padding-bottom: 12px; }
  .navknop { display: inline-flex; margin-left: auto; }
  nav.main { display: none; width: 100%; flex-direction: column; gap: 2px; padding: 10px 0 6px; }
  nav.main.open { display: flex; }
  nav.main a { padding: 12px 10px; font-size: 16px; border-radius: 8px; }
  nav.main a.cta { margin-left: 0; margin-top: 8px; text-align: center; }
}

/* ---------- formulier verstuurd ---------- */
.succesblok {
  background: #eef7f7; border: 2px solid var(--turquoise); border-radius: 14px;
  padding: 30px; max-width: 560px;
}
.succesblok .vinkje {
  width: 54px; height: 54px; border-radius: 50%; background: var(--turquoise);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 28px; font-weight: 800; margin-bottom: 16px;
}
.succesblok h3 { font-size: 22px; margin-bottom: 8px; }
.succesblok p { color: var(--grijs); }

/* ---------- kruimelpad, skiplink en toegankelijkheid ---------- */
.skiplink {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--geel); color: var(--ink); font-weight: 700;
  padding: 12px 20px; border-radius: 0 0 8px 0; text-decoration: none;
}
.skiplink:focus { left: 0; }

nav.kruimels { background: var(--lichtgrijs); border-bottom: 1px solid #dceaea; font-size: 14.5px; }
nav.kruimels .wrap { padding: 11px 24px; }
nav.kruimels a { color: var(--petrol); font-weight: 600; text-decoration: none; }
nav.kruimels a:hover { text-decoration: underline; }
nav.kruimels .pijl { color: #9ab5b5; margin: 0 8px; }
nav.kruimels [aria-current="page"] { color: var(--grijs); }

/* case-koppen zijn h2 geworden; hou de opmaak zoals hij was */
.case h2 { font-size: 23px; text-transform: none; letter-spacing: 0; }
.case a.meer {
  display: inline-block; margin-top: 16px;
  color: var(--petrol); font-weight: 700; text-decoration: none;
}
.case a.meer:hover { text-decoration: underline; }

/* zichtbare focus voor toetsenbordgebruik */
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--geel); outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---------- cookievoorkeuren ---------- */
/* De balk moet juist NIET in de site opgaan: een lichte kaart die los van de
   onderrand zweeft, met slagschaduw en een gele rand. Op een site die grotendeels
   petrol is, valt licht meer op dan donker. */
.consentbalk {
  position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 200;
  background: var(--wit); color: var(--ink);
  border: 1px solid #d3e4e4; border-top: 6px solid var(--geel);
  border-radius: 14px;
  box-shadow: 0 18px 50px rgba(0,0,0,.30), 0 4px 12px rgba(0,0,0,.14);
  max-width: 1080px; margin: 0 auto;
  max-height: 85vh; overflow-y: auto;
  animation: consent-op .35s ease-out both;
}
@keyframes consent-op { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .consentbalk { animation: none; } }

.consentbalk .wrap { padding: 24px 28px 26px; max-width: none; }
.consent-hoofd { display: flex; gap: 32px; align-items: center; flex-wrap: wrap; }
.consent-tekst { flex: 1 1 380px; }
.consentbalk h2 {
  font-size: 20px; text-transform: none; letter-spacing: 0;
  margin-bottom: 6px; color: var(--ink); outline: none;
}
.consentbalk p { font-size: 15px; line-height: 1.6; margin: 0; color: var(--grijs); }
.consentbalk a { color: var(--petrol); font-weight: 700; }
.consent-knoppen { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.consent-knoppen .btn { margin: 0; font-size: 15px; padding: 13px 22px; }
/* weigeren en accepteren zijn even groot en staan naast elkaar; alleen de
   volgorde en de merkkleur onderscheiden ze, niet de klikbaarheid */
.consentbalk .btn.secundair {
  background: var(--wit); border-color: #cadede; color: var(--ink); font-weight: 500;
}
.consentbalk .btn.secundair:hover { background: var(--lichtgrijs); border-color: #b6d4d4; }
.consent-meer {
  background: none; border: 0; padding: 4px; cursor: pointer;
  color: var(--grijs); font: inherit; font-size: 15px; text-decoration: underline;
}
.consent-meer:hover { color: var(--petrol); }

.consent-detail { margin-top: 20px; padding-top: 18px; border-top: 1px solid #e0e9e9; }
.consent-regel { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 14px; font-size: 15px; cursor: pointer; }
.consent-regel.vast { cursor: default; color: var(--grijs); }
.consent-regel input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--petrol); flex: none; }
.consent-regel strong { display: block; color: var(--ink); }
.consent-regel code {
  font-size: 13px; color: var(--ink); background: var(--lichtgrijs);
  border: 1px solid #d5e6e6; padding: 1px 5px; border-radius: 4px;
}
.consent-detail .btn { margin-top: 4px; }

/* knop die eruitziet als een link, voor de voettekst */
.linkknop {
  background: none; border: 0; padding: 0; cursor: pointer;
  color: inherit; font: inherit; text-decoration: underline;
}

@media (max-width: 700px) {
  .consentbalk { left: 10px; right: 10px; bottom: 10px; }
  .consentbalk .wrap { padding: 20px 20px 22px; }
  .consent-knoppen { width: 100%; flex-direction: column; align-items: stretch; gap: 10px; }
  .consent-knoppen .btn { width: 100%; text-align: center; }
  .consent-meer { margin-top: 2px; align-self: center; }
}

/* ---------- artikelen (/uitgezocht) ---------- */
.wrap.artikel { max-width: 740px; }
.artikel .meta-regel {
  font-size: 14.5px; color: var(--grijs); margin-bottom: 30px;
  padding-bottom: 18px; border-bottom: 1px solid #e0e9e9;
}
.artikel .meta-regel a { color: var(--petrol); font-weight: 600; }
.artikel p { margin-bottom: 18px; font-size: 17.5px; }
/* koppen in een lopend artikel bewust niet in kapitalen: vijf schreeuwende
   tussenkoppen in een leesstuk werkt niet, de kleur en het gewicht dragen
   de huisstijl hier al */
.artikel h2 {
  font-size: 26px; text-transform: none; letter-spacing: 0;
  color: var(--petrol); margin: 40px 0 14px;
}
.artikel h3 { font-size: 20px; margin: 28px 0 10px; }
.artikel ul, .artikel ol { padding-left: 26px; margin: 0 0 18px; font-size: 17.5px; }
.artikel li + li { margin-top: 8px; }
.artikel strong { color: var(--ink); }
.artikel a { color: var(--petrol); font-weight: 600; }
.artikel code {
  font-size: .92em; background: var(--lichtgrijs);
  border: 1px solid #d5e6e6; border-radius: 4px; padding: 1px 6px;
}
.artikel-slot {
  margin-top: 46px; padding: 28px 30px;
  background: var(--lichtgrijs); border-radius: 14px; border-left: 5px solid var(--geel);
}
.artikel-slot h2 { margin-top: 0; font-size: 22px; }
.artikel-slot p { font-size: 16.5px; }
.artikel-slot .knoppenrij { margin-top: 18px; }
/* de standaard secundaire knop is wit-op-donker en dus onleesbaar op dit
   lichte blok; hier de omgekeerde variant */
.artikel-slot .btn.secundair {
  background: var(--wit); color: var(--petrol); border-color: #bcd7d7;
}
.artikel-slot .btn.secundair:hover { border-color: var(--petrol); background: var(--wit); }

/* overzichtspagina */
.artikellijst .kaart h2, .artikellijst .kaart h3 {
  font-size: 22px; text-transform: none; letter-spacing: 0; margin: 8px 0 10px;
}
.artikellijst .kaart h2 a, .artikellijst .kaart h3 a { color: var(--ink); text-decoration: none; }
.artikellijst .kaart h2 a:hover, .artikellijst .kaart h3 a:hover { color: var(--petrol); text-decoration: underline; }
.artikellijst .kaart .label {
  display: inline-block; font-size: 12.5px; font-weight: 700; letter-spacing: .05em;
  text-transform: uppercase; color: var(--petrol);
}
.artikellijst .kaart .meta-regel { font-size: 14px; color: var(--grijs); margin: 12px 0 14px; }
.feedregel { margin-top: 30px; font-size: 15px; color: var(--grijs); }
.feedregel a { color: var(--petrol); font-weight: 600; }

/* ---------- AI-blok op de dienstpagina's ---------- */
.ai-blok {
  background: linear-gradient(135deg, #f3fbfb 0%, var(--lichtgrijs) 100%);
  border: 1px solid #cfe6e6; border-left: 6px solid var(--turquoise);
  border-radius: 14px; padding: 30px 34px;
}
.ai-blok .kicker {
  display: inline-block; color: var(--petrol); font-weight: 700; font-size: 13px;
  letter-spacing: .06em; text-transform: uppercase; margin-bottom: 8px;
}
.ai-blok h2 {
  margin: 0 0 14px; font-size: 24px; text-transform: none; letter-spacing: 0;
}
.ai-blok p { margin-bottom: 14px; }
.ai-blok p strong { color: var(--petrol); }
.ai-blok a.meer {
  display: inline-block; margin-top: 4px;
  color: var(--petrol); font-weight: 700; text-decoration: none;
}
.ai-blok a.meer:hover { text-decoration: underline; }
@media (max-width: 700px) { .ai-blok { padding: 24px 22px; } }

/* benodigdheden-blok bovenaan handleidingen */
.artikel .benodigdheden { background: #eef7f7; border: 1px solid #d5e6e6; border-left: 5px solid var(--turquoise); border-radius: 10px; padding: 18px 22px; margin: 24px 0; }
.artikel .benodigdheden p { margin: 0 0 6px; font-weight: 700; color: var(--petrol); }
.artikel .benodigdheden ul { margin: 0 0 0 20px; }
.artikel .benodigdheden li + li { margin-top: 5px; }

/* ---------- navigatie met categorieen ---------- */
nav.main .navgroep { position: relative; }
nav.main summary {
  list-style: none; cursor: pointer; color: #eaf6f6; font-weight: 500;
  padding: 8px 12px; border-radius: 6px; font-size: 15.5px;
  display: flex; align-items: center; gap: 6px; white-space: nowrap;
}
nav.main summary::-webkit-details-marker { display: none; }
nav.main summary::after { content: "\25be"; font-size: 10px; opacity: .75; }
nav.main summary:hover, nav.main .navgroep[open] > summary { background: rgba(255,255,255,.12); }
nav.main .submenu { display: grid; gap: 2px; }
@media (min-width: 881px) {
  nav.main .navgroep .submenu {
    position: absolute; top: calc(100% + 8px); left: 0; background: var(--petrol);
    border-radius: 10px; box-shadow: 0 14px 30px rgba(0,0,0,.32); padding: 8px;
    min-width: 235px; z-index: 60;
  }
}
@media (max-width: 880px) {
  nav.main .navgroep, nav.main summary { width: 100%; }
  nav.main summary { padding: 12px 10px; font-size: 16px; }
  nav.main .submenu { padding-left: 16px; }
}

/* portret- en werkfoto's begrensd houden, zeker op mobiel */
.tweekolom img.foto { max-width: 400px; width: 100%; height: auto; justify-self: center; }
@media (max-width: 800px) {
  .tweekolom img.foto { max-width: 320px; margin: 0 auto; }
}