.bel-figuur {
      margin: 1em 0 1.4rem 0;
    }
    .bel-canvas {
      position: relative;
      background: var(--grey-overlay, #eee);
      border-radius: 12px;
      box-shadow: var(--shadow-subtle, 0 1px 4px rgba(0,0,0,.06));
      overflow: hidden;
      padding-bottom: 0.9rem;
      font-family: 'Poppins', sans-serif;
    }
    .bel-canvas svg {
      display: block;
      width: 100%;
      height: auto;
    }
    .bel-fullscreen {
      position: absolute;
      top: 12px;
      right: 12px;
      z-index: 2;
      display: grid;
      place-items: center;
      padding: 8px;
      border: none;
      border-radius: 8px;
      background: none;
      color: var(--subtle-text, #4a4a4a);
      cursor: pointer;
    }
    .bel-fullscreen:hover { background: var(--white-overlay, rgba(255,255,255,.6)); }

    /* volledig scherm */
    .bel-figuur:fullscreen {
      background: var(--background, #f6f6f6);
      padding: 2vh max(5%, 24px);
      overflow-y: auto;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .bel-figuur:fullscreen #bel-svg {
      max-height: 68vh;
      margin: 0 auto;
    }

    /* dynamische info: binnen het grijze vlak */
    .bel-keten {
      width: fit-content;
      max-width: 90%;
      margin: 0 auto;
      padding: 0.3em 1em;
      background: var(--white-overlay, #fff);
      border-radius: 999px;
      box-shadow: var(--shadow-subtle, 0 1px 4px rgba(0,0,0,.06));
      text-align: center;
      font-size: 0.62rem;
      font-weight: 500;
      letter-spacing: 0.02em;
      color: var(--very-subtle-text, #999);
    }
    .bel-keten button {
      font: inherit;
      color: var(--subtle-text, #555);
      background: none;
      border: none;
      padding: 0 2px;
      cursor: pointer;
    }
    .bel-keten button:hover { text-decoration: underline; }
    .bel-keten .bel-huidig { color: var(--text, #333); font-weight: 600; }
    .bel-keten .bel-pijl { padding: 0 3px; }

    .bel-toelichting {
      margin: 0.35rem auto 0 auto;
      padding: 0 5%;
      max-width: 36rem;
      min-height: 3em;
      text-align: center;
      font-size: 0.72rem;
      line-height: 1.5;
      color: var(--subtle-text, #444);
    }
    .bel-toelichting .bel-naam { font-weight: 600; color: var(--text, #333); font-style: normal; }

    /* statische elementen: buiten het grijze vlak */
    .bel-legenda {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 0.4rem 1.1rem;
      margin: 0.7rem 0 0.5rem 0;
      font-family: 'Poppins', sans-serif;
      font-size: 0.65rem;
      font-weight: 500;
    }
    .bel-legenda-item { display: inline-flex; align-items: center; gap: 0.35rem; }
    .bel-swatch {
      width: 0.85em;
      height: 0.85em;
      border-radius: 3px;
      display: inline-block;
    }

    /* svg-onderdelen */
    #bel-svg text { font-family: 'Poppins', sans-serif; }
    #bel-svg .bel-node { cursor: pointer; outline: none; }
    #bel-svg .bel-node:focus-visible circle.bel-bal { stroke: var(--text, #333); stroke-width: 2.5; }
    #bel-svg .bel-node circle.bel-bal {
      stroke: rgba(0,0,0,0.22);
      stroke-width: 1;
      transition: filter .15s ease;
    }
    #bel-svg .bel-node:hover circle.bel-bal {
      filter: drop-shadow(0 3px 6px var(--shadow-svg-color, rgba(0,0,0,.2)));
    }
    #bel-svg .bel-label { fill: var(--text, #333); }
    #bel-svg .bel-chip {
      fill: var(--background, #fff);
      fill-opacity: 0.72;
    }
    #bel-svg .bel-halo {
      paint-order: stroke;
      stroke: var(--grey-overlay, #eee);
      stroke-width: 3px;
      stroke-linejoin: round;
    }
    #bel-svg .bel-sublabel { fill: var(--very-subtle-text, #999); }
    #bel-svg .bel-link { stroke: var(--very-subtle-text, #bbb); stroke-width: 1.4; fill: none; }
    #bel-svg .bel-stub { fill: none; stroke-width: 1.4; }
    #bel-svg .bel-ghost circle { fill: none; stroke: var(--very-subtle-text, #bbb); stroke-dasharray: 4 5; }
    #bel-svg .bel-ghost line { stroke: var(--very-subtle-text, #bbb); stroke-dasharray: 2 5; }
    #bel-svg .bel-ghost text { fill: var(--very-subtle-text, #999); }
    #bel-svg .bel-as { color: var(--subtle-text, #4a4a4a); }
    #bel-svg .bel-as line, #bel-svg .bel-as polyline { stroke: currentColor; fill: none; stroke-miterlimit: 10; }
    #bel-svg .bel-as text {
      fill: currentColor;
      font-size: 12px;
      font-weight: 500;
      letter-spacing: 0.14em;
    }