:root{
  --groen:#5f7f6a;
  --donker:#23322b;
  --licht:#f4f6f5;
  --zand:#efe9df;
  --kaart:#ffffff;
  --lijn:rgba(0,0,0,0.08);
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--licht);color:var(--donker);line-height:1.7}
header{background:var(--groen);color:#fff}
header .wrap{max-width:1180px;margin:0 auto;padding:34px 18px}
header h1{margin:0 0 6px 0;font-size:24px}
header p{margin:0 0 16px 0;opacity:0.92}
nav a{color:#fff;text-decoration:none;font-weight:700;margin-right:16px}
nav a:hover{text-decoration:underline}
.hero{background:linear-gradient(rgba(244,246,245,0.25),rgba(244,246,245,0.9)),url('images/hero.jpg') center/cover no-repeat;padding:90px 18px}
.hero .inner{max-width:980px;margin:0 auto;background:rgba(255,255,255,0.92);border-radius:26px;padding:38px 30px;border:1px solid var(--lijn)}
.art-hero{background:linear-gradient(rgba(35,50,43,0.65),rgba(35,50,43,0.85)),url('images/art_bg.jpg') center/cover no-repeat;padding:90px 18px;color:#fff}
.art-hero .inner{max-width:980px;margin:0 auto;background:rgba(255,255,255,0.08);border-radius:26px;padding:38px 30px}
main{max-width:1100px;margin:56px auto;padding:0 18px}
.section{margin-bottom:52px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:22px}
.card{background:var(--kaart);border-radius:22px;padding:26px;border:1px solid var(--lijn)}
.card img{width:100%;height:220px;object-fit:cover;border-radius:18px;margin-bottom:14px}
.kader{background:var(--zand);border-radius:22px;padding:24px;border:1px solid var(--lijn)}
.knop{display:inline-block;background:var(--groen);color:#fff;text-decoration:none;font-weight:800;padding:12px 16px;border-radius:14px}
.knop:hover{opacity:0.92}
footer{background:var(--zand);padding:34px 18px;border-top:1px solid var(--lijn)}
footer .wrap{max-width:1100px;margin:0 auto;font-size:14px}
.smallnote{font-size:14px;opacity:0.85}