/* ==========================================================================
   article.css — shared by the blog article pages (blog-*.html)
   Layout: col-1 sticky table of contents · col-2-3 .prose · col-4 related posts
   Tokens only: no new colours, no radius, no shadows. Append rules, do not rewrite.
   ========================================================================== */

/* ---------- Hero: balanced title lines, meta stacked in column 1 next to the standfirst ---------- */
.article-hero__title { text-wrap: balance; }
.article-hero__meta { flex-direction: column; gap: 10px; align-self: start; }
.article-hero__meta b { font-weight: 500; color: var(--white); }

/* ---------- Article grid ---------- */
.article { align-items: start; }                       /* items keep their own height → sticky works */
.article__toc, .article__aside { position: sticky; top: 100px; }

/* Table of contents (column 1) */
.toc__list { margin-top: 30px; border-top: 1px solid var(--line); }
.toc__list li { border-bottom: 1px solid var(--line); }
.toc__list a { display: flex; align-items: baseline; gap: 12px; padding: 11px 0; font-size: 14px; line-height: 1.3; color: var(--ink-70); transition: color var(--dur) var(--ease); }
.toc__list a:hover { color: var(--black); }
.toc__num { flex: none; width: 28px; font-size: 12px; font-weight: 700; color: var(--black); }

/* Prose extras */
.prose__lede { font-size: 20px; line-height: 1.3; color: var(--black); }
.prose h2 { scroll-margin-top: 100px; }
.prose__num { display: block; margin-bottom: 14px; font-family: var(--font-display); font-weight: 400; font-size: 36px; line-height: 1; color: transparent; -webkit-text-stroke: 1px var(--black); }
.prose .table-wrap { margin-top: 30px; margin-bottom: 30px; }
.prose .table { font-size: 14px; }
.prose .table th, .prose .table td { padding: 14px 16px 14px 0; }
.prose .table td:first-child { white-space: nowrap; }
.prose .checklist li { padding-left: 30px; color: var(--black); }
.prose .checklist li::before { content: none; }
.prose .checklist .icon--check { position: absolute; left: 0; top: 0.45em; color: var(--black); }

/* Related posts (column 4) */
.related { display: flex; flex-direction: column; gap: 40px; }
.related__title { padding-bottom: 12px; border-bottom: 1px solid var(--line); font-size: 12px; font-weight: 700; line-height: 1; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-75); }
.post__title a { display: block; }

/* ---------- Share / newsletter strip (dark) ---------- */
.share { padding-bottom: 0; }
.share__list { display: flex; flex-direction: column; gap: 18px; }
.share__list .link-arrow { color: var(--white); }
.share__rule { margin-top: 80px; }
.newsletter .h3 { max-width: 460px; margin-bottom: 12px; }
.newsletter__text { max-width: 460px; margin-bottom: 20px; font-size: 14px; line-height: 1.4; color: var(--white-60); }
.newsletter .form { grid-template-columns: minmax(0, 1fr) auto; align-items: start; }
.newsletter .form__submit { align-self: start; }

/* ---------- Responsive ---------- */
@media (max-width: 1023px) {
  .article__toc, .article__aside { position: static; grid-column: 1 / -1; }
  .toc__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--gap); margin-top: 24px; }
  .related { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px var(--gap); }
  .related__title { grid-column: 1 / -1; }
  .share__rule { margin-top: 64px; }
}

@media (max-width: 639px) {
  .toc__list { grid-template-columns: minmax(0, 1fr); }
  .related { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .prose__num { font-size: 28px; }
  .prose__lede { font-size: 17px; }
  .prose .table td:first-child { white-space: normal; }
  .newsletter .form { grid-template-columns: minmax(0, 1fr); }
  .share__rule { margin-top: 56px; }
}