/* okno-p4.css — P4 long-form editorial presentation layer (Constitution namespace okc-art*).
   Pilot R1: shared components for substantial Knowledge Base articles. Tokens map 1:1 to the existing
   approved layer (okno-constitution.css); no new colors, fonts, button families or gradients. */

.okc-art .okc-art__wrap{max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:1000px){.okc-art .okc-art__wrap{padding:0 40px}}

/* A. editorial opener: text block + approved 4:3 media companion (~40% width), never full-screen */
.okc-art__openersec{padding:28px 0 8px}
.okc-art__opener{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(0,.82fr);gap:44px;align-items:center}
.okc-art__opener .d3-h1{margin-top:0}
.okc-art__media{aspect-ratio:4/3;overflow:hidden;border-radius:18px;box-shadow:0 6px 20px rgba(13,124,107,.10);background:linear-gradient(180deg,#f3faf8,#eaf4f1)}
.okc-art__media img{width:100%;height:100%;object-fit:cover;display:block}
@media(max-width:1000px){.okc-art__opener{grid-template-columns:1fr;gap:18px}
  .okc-art__opener .okc-art__media{order:2;max-width:520px}}

/* B. reading layout: measured column + optional sticky rail */
.okc-art__layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;align-items:start;padding:8px 0 30px}
.okc-art__col{max-width:760px;min-width:0}
.okc-art__col>.d3-p,.okc-art__col>ul,.okc-art__col>ol{max-width:740px}
@media(max-width:1100px){.okc-art__layout{grid-template-columns:1fr;gap:0}}

/* C. table of contents */
.okc-art__toc{position:sticky;top:84px;border:1px solid #e7ecf3;border-radius:14px;padding:16px 18px;background:#fff}
.okc-art__toc b{display:block;font-size:12.5px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#0d7c6b;margin-bottom:8px}
.okc-art__toc a{display:block;padding:5px 0;font-size:13.5px;line-height:1.35;color:#5b6472;text-decoration:none;border-left:2px solid transparent;padding-left:10px;margin-left:-10px}
.okc-art__toc a:hover{color:#0d7c6b;border-left-color:#0d7c6b}
.okc-art__toc a:focus-visible{outline:3px solid #7fd1c3;outline-offset:2px}
@media(max-width:1100px){.okc-art__toc{display:none}}
.okc-art__tocm{display:none}
@media(max-width:1100px){.okc-art__tocm{display:block;margin:14px 0 4px;border:1px solid #e7ecf3;border-radius:14px;background:#f6f8fb}
  .okc-art__tocm summary{cursor:pointer;padding:13px 16px;font-weight:800;font-size:14px;color:#0c1e3c;list-style:none;display:flex;justify-content:space-between;align-items:center}
  .okc-art__tocm summary::after{content:"+";font-size:18px;color:#0d7c6b}
  .okc-art__tocm[open] summary::after{content:"–"}
  .okc-art__tocm nav{padding:2px 16px 12px}
  .okc-art__tocm a{display:block;padding:6px 0;font-size:14px;color:#33404f;text-decoration:none;border-bottom:1px solid #e7ecf3}
  .okc-art__tocm a:last-child{border-bottom:0}}
.okc-art h2[id]{scroll-margin-top:96px}

/* D. editorial modules — all content verbatim, presentation only */
.okc-callout{border-left:4px solid #0d7c6b;background:linear-gradient(180deg,#f3faf8,#eaf4f1);border-radius:0 14px 14px 0;padding:16px 20px;margin:18px 0;max-width:740px}
.okc-callout p{margin:0;color:#33404f;line-height:1.55}

.okc-checklist{list-style:none;padding:0;margin:16px 0;max-width:740px}
.okc-checklist li{position:relative;padding:10px 14px 10px 40px;margin:8px 0;background:#fff;border:1px solid #e7ecf3;border-radius:14px;line-height:1.5;color:#33404f}
.okc-checklist li::before{content:"✓";position:absolute;left:14px;top:9px;width:18px;height:18px;border-radius:50%;
  background:#0d7c6b;color:#fff;font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center}

.okc-artsteps{list-style:none;counter-reset:okcstep;padding:0;margin:16px 0;max-width:740px}
.okc-artsteps li{position:relative;counter-increment:okcstep;padding:12px 16px 12px 52px;margin:8px 0;background:#f6f8fb;border:1px solid #e7ecf3;border-radius:14px;line-height:1.5;color:#33404f}
.okc-artsteps li::before{content:counter(okcstep);position:absolute;left:14px;top:11px;width:26px;height:26px;border-radius:50%;
  background:#0d7c6b;color:#fff;font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center}

.okc-arttable{overflow-x:auto;margin:18px 0;border:1px solid #e7ecf3;border-radius:14px}
.okc-arttable table{border-collapse:collapse;width:100%;min-width:560px;font-size:14.5px}
.okc-arttable th{background:#f6f8fb;color:#0c1e3c;text-align:left;font-weight:800}
.okc-arttable th,.okc-arttable td{padding:11px 14px;border-bottom:1px solid #e7ecf3;vertical-align:top;line-height:1.45}
.okc-arttable tr:last-child td{border-bottom:0}

/* G. official sources panel */
.okc-sources{background:#f6f8fb;border:1px solid #e7ecf3;border-radius:14px;padding:22px 24px;margin:10px 0}
.okc-sources h2{margin-top:0}
.okc-sources ul{list-style:none;padding:0;margin:10px 0 0}
.okc-sources li{padding:8px 0 8px 26px;position:relative;border-bottom:1px solid #e7ecf3;font-size:14.5px;line-height:1.45}
.okc-sources li:last-child{border-bottom:0}
.okc-sources li::before{content:"";position:absolute;left:2px;top:14px;width:12px;height:12px;border:2px solid #0d7c6b;border-radius:3px}
.okc-sources a{color:#0d7c6b}

/* F. related-content cluster (C4 cards come from okno-constitution.css) */
.okc-art__related{padding:6px 0 40px}
.okc-art__related .okc-relkick{margin:14px 0 10px;font-size:12.5px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#0d7c6b}

/* tpost rollout additions: prose normalisation for legacy article content + text-led opener */
.okc-art__opener--text{grid-template-columns:1fr}
.okc-art__opener--text .d3-h1{max-width:900px}
.okc-art__prose{color:#33404f;line-height:1.62;font-size:16.5px;overflow-wrap:break-word;min-width:0}
.okc-art__prose h2{color:#0c1e3c;font-size:26px;line-height:1.25;margin:34px 0 12px}
.okc-art__prose h3{color:#0c1e3c;font-size:19px;margin:24px 0 8px}
.okc-art__prose p{margin:12px 0}
.okc-art__prose ul,.okc-art__prose ol{margin:12px 0;padding-left:24px}
.okc-art__prose li{margin:6px 0}
.okc-art__prose a{color:#0d7c6b}
.okc-art__prose blockquote{border-left:3px solid #0d7c6b;margin:16px 0;padding:6px 18px;background:#f6f8fb;border-radius:0 12px 12px 0}
.okc-art__img{display:block;max-width:100%;height:auto;border-radius:14px;margin:20px 0;box-shadow:0 6px 20px rgba(13,124,107,.10)}
.okc-art__prose table{border-collapse:collapse;width:100%;font-size:14.5px;margin:16px 0;display:block;overflow-x:auto;max-width:100%}
.okc-art__prose td,.okc-art__prose th{border:1px solid #e7ecf3;padding:9px 12px;vertical-align:top}
@media(max-width:640px){.okc-art__prose{font-size:16px}.okc-art__prose h2{font-size:22px}}

/* related cards rendered in document order inside the reading column */
.okc-art__col .okc-grid--3{grid-template-columns:repeat(2,1fr)}
@media(max-width:640px){.okc-art__col .okc-grid--3{grid-template-columns:1fr}}