<style>
  .kat-hero {
    background:
      radial-gradient(ellipse 60% 50% at 0% 0%, rgba(232,163,61,0.24), transparent 60%),
      var(--sand);
    padding: 56px 0 32px;
  }
  .kat-hero h1 { margin: 18px 0 18px; max-width: 20ch; }
  .kat-hero .lede { max-width: 60ch; }

  /* legend */
  .tahap-legend {
    margin-top: 28px;
    background: var(--paper);
    border: 1px solid rgba(42,35,32,0.10);
    border-radius: var(--r-lg);
    padding: 22px;
  }
  .tahap-legend h4 {
    font-family: var(--f-display); font-size: 20px; font-weight: 400;
    margin: 0 0 14px;
  }
  .legend-grid {
    display: grid; gap: 14px; grid-template-columns: 1fr;
  }
  @media (min-width: 720px) { .legend-grid { grid-template-columns: 1fr 1fr; } }
  @media (min-width: 1024px) { .legend-grid { grid-template-columns: 1fr 1fr 1fr 1fr; } }
  .legend-item {
    display: flex; gap: 14px; align-items: flex-start;
  }
  .legend-dot {
    width: 36px; height: 36px; border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 18px; flex-shrink: 0;
  }
  .legend-item h5 {
    font-family: var(--f-display); font-size: 16px; font-weight: 400;
    margin: 0 0 4px; line-height: 1.1;
  }
  .legend-item p { margin: 0; font-size: 12.5px; line-height: 1.45; color: var(--ink-soft); }

  .cat-block {
    padding: 56px 0;
    border-top: 1px solid rgba(42,35,32,0.10);
  }
  .cat-block:nth-child(odd) {
    background: var(--paper);
  }
  .cat-head {
    display: flex; gap: 18px; align-items: flex-start; margin-bottom: 32px;
    flex-wrap: wrap;
  }
  .cat-head-text { flex: 1; min-width: 250px; }
  .cat-head h2 {
    font-family: var(--f-display); font-size: clamp(30px, 4.5vw, 48px);
    font-weight: 400; line-height: 1; margin: 6px 0 12px;
  }
  .cat-head h2 em { font-style: italic; color: var(--vermilion); }
  .cat-head p {
    margin: 0; font-size: 15px; line-height: 1.6; color: var(--ink-soft);
    max-width: 55ch;
  }
  .replaces-pill {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 14px; border-radius: var(--r-pill);
    background: rgba(200,65,43,0.10); color: var(--vermilion);
    font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.04em;
    flex-shrink: 0; align-self: center;
  }
  .replaces-pill::before { content: "↺"; font-weight: 700; }

  .cols {
    display: grid; gap: 24px; grid-template-columns: 1fr;
  }
  @media (min-width: 980px) { .cols { grid-template-columns: 1fr 1fr; gap: 32px; } }

  .col-head {
    display: flex; gap: 10px; align-items: center;
    margin-bottom: 16px;
  }
  .col-head h3 {
    font-family: var(--f-display); font-size: 22px; font-weight: 400;
    margin: 0;
  }
  .col-head .badge {
    padding: 4px 10px; border-radius: var(--r-pill);
    font-size: 11px; font-weight: 600;
    background: var(--ink); color: var(--sand);
  }

  .alt-list { display: flex; flex-direction: column; gap: 12px; }
  .alt {
    background: var(--sand);
    border-radius: var(--r-md);
    padding: 18px;
    border: 1px solid rgba(42,35,32,0.10);
    transition: transform .15s, box-shadow .15s;
  }
  .cat-block:nth-child(odd) .alt { background: var(--paper-2); }
  .alt:hover { transform: translateY(-1px); box-shadow: var(--shadow-1); }
  .alt-head {
    display: flex; justify-content: space-between; align-items: flex-start;
    gap: 10px;
  }
  .alt-name {
    font-family: var(--f-display); font-size: 22px; font-weight: 400;
    line-height: 1; margin: 0;
  }
  .alt-tahap {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 3px 9px; border-radius: var(--r-pill);
    font-size: 10.5px; font-weight: 600; white-space: nowrap;
  }
  .alt-tahap-penuh  { background: rgba(78,124,58,0.20); color: #2F4D22; }
  .alt-tahap-separa { background: rgba(232,132,61,0.20); color: #7A3F14; }
  .alt-tahap-oss    { background: rgba(42,35,32,0.08); color: var(--ink); }

  .alt-blurb {
    margin: 10px 0 0; font-size: 13.5px; line-height: 1.55; color: var(--ink-soft);
  }
  .alt-caveat {
    margin: 10px 0 0; padding: 10px 12px;
    background: rgba(232,163,61,0.14);
    border-left: 3px solid var(--saffron);
    border-radius: 4px;
    font-size: 12.5px; line-height: 1.5; color: var(--ink);
    font-style: italic;
  }
  .alt-caveat::before {
    content: "Caveat jujur · "; font-weight: 600; color: var(--vermilion); font-style: normal;
  }

  .col-empty {
    background: rgba(42,35,32,0.04); border-radius: var(--r-md);
    padding: 22px; text-align: center; color: var(--ink-mute); font-size: 13.5px;
    font-style: italic;
    border: 1px dashed rgba(42,35,32,0.22);
  }
  .col-empty em { font-style: normal; color: var(--vermilion); }
