/* Source library and reader: clear subjects, visible controls, comfortable prose. */
.source-library { padding-block: 48px 64px; }
.source-library .library-eyebrow { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; color: var(--color-accent-primary); font: 600 11px/1.5 var(--font-sans); text-transform: uppercase; letter-spacing: .07em; }
.source-library .library-eyebrow .ui-icon { width: 18px; height: 18px; }
.source-library .page-title { font-size: clamp(34px, 4.5vw, 58px); max-width: 800px; margin-bottom: 16px; }
.source-library .page-subtitle { font-size: 17px; line-height: 1.7; max-width: 670px; }
.source-library .filter-bar { overflow-x: auto; flex-wrap: nowrap; gap: 8px; padding: 6px; margin: 0; }
.source-library .filter-btn { font-size: 13px; padding: 9px 12px; white-space: nowrap; text-align: left; }
.source-library .articles-grid { gap: 18px; }
.source-library .article-card { min-width: 0; --library-card-padding:26px; padding: var(--library-card-padding); overflow:hidden; border-color: var(--color-border-medium); border-radius: 18px; transition: border-color .18s ease, box-shadow .18s ease; }
.source-library .article-card:hover { border-color: var(--color-accent-primary); box-shadow: 0 8px 24px rgb(39 31 22 / 5%); }
.source-library .card-meta { font: 500 11px/1.5 var(--font-sans); text-transform: none; margin-bottom: 20px; gap: 6px 12px; }
.source-library .card-date { display: inline-flex; align-items: center; color: var(--color-ink-muted); }
.source-library .card-title { font-size: 27px; font-weight: 400; line-height: 1.16; letter-spacing: -.025em; text-wrap: pretty; }
.source-library .card-title .ui-icon { display: none; }
.source-library .card-summary { font-size: 15px; line-height: 1.7; margin-block: 16px 24px; }
.source-library .card-footer { border-top-style: solid; font: 500 12px/1.5 var(--font-sans); padding-top: 16px; }
.guide-reader { max-width: 800px; padding-block: 36px 56px; }
.guide-reader .article-meta-row { font: 500 12px/1.5 var(--font-sans); text-transform: none; margin-bottom: 22px; }
.guide-reader .article-title { font-size: clamp(35px, 4.5vw, 56px); line-height: 1.08; text-wrap: pretty; }
.guide-reader .article-summary-lead { font-size: 19px; line-height: 1.65; margin-block: 22px; }
.guide-reader .byline-bar { gap: 8px 20px; font-size: 12px; }
.guide-reader .article-header { margin-bottom: 28px; }
.guide-reader .prose { font-size: 17px; line-height: 1.8; }
.guide-reader .prose h2 { font-size: 31px; font-weight: 400; line-height: 1.18; letter-spacing: -.02em; }
.guide-reader .prose h2[id], .guide-reader #sources { scroll-margin-top: calc(var(--site-header-size, calc(84px + var(--safe-area-top))) + 16px); }
.article-outline { border: 1px solid var(--color-border-medium); border-radius: 14px; background: var(--color-bg-card); padding: 18px 22px; margin-bottom: 32px; }
.article-outline h2 { font: 600 12px/1.5 var(--font-sans); color: var(--color-ink-muted); margin-bottom: 8px; }
.article-outline ol { display: grid; gap: 0; list-style: none; padding: 0; }
.article-outline a { display: flex; align-items: center; gap: 8px; min-height: 44px; font: 400 14px/1.5 var(--font-sans); color: var(--color-ink-primary); }
.article-outline a:hover { color: var(--color-accent-primary); text-decoration: underline; text-underline-offset: 4px; }
.article-outline .ui-icon { width: 16px; height: 16px; color: var(--color-accent-primary); }
.guide-reader .sources-box ul { list-style: none; }
.guide-reader .sources-box li { border-top: 1px solid var(--color-border-subtle); padding-top: 14px; margin-top: 14px; }
.guide-reader .sources-box li:first-child { border: 0; padding-top: 0; margin-top: 0; }
.article-next { border-top: 1px solid var(--color-border-medium); margin-top: 38px; padding-top: 26px; }
.article-next h2 { font: 400 29px/1.2 var(--font-serif); margin-bottom: 18px; }
.article-next a { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 14px; min-height: 48px; border-top: 1px solid var(--color-border-subtle); color: var(--color-ink-primary); font: 500 15px/1.5 var(--font-sans); }
.article-next a:hover { color: var(--color-accent-primary); }
.article-next .ui-icon { width: 18px; height: 18px; }
.article-return { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font: 500 14px/1.5 var(--font-sans); color: var(--color-accent-primary); }
.article-return .ui-icon { width: 17px; height: 17px; }
.working-draft-notice { border: 1px solid var(--color-border-medium); border-radius: 12px; padding: 15px 18px; background: var(--color-bg-card-subtle); margin-bottom: 24px; color: var(--color-ink-secondary); font: 400 14px/1.6 var(--font-sans); }
@media (max-width: 520px) {
  .source-library { padding: 32px 18px 48px; }
  .source-library .page-subtitle { font-size: 16px; }
  .source-library .filter-btn { font-size: 12px; gap: 6px; }
  .source-library .article-card { --library-card-padding:24px; }
  .source-library .card-title { font-size: 28px; }
  .guide-reader { padding-inline: 18px; }
  .guide-reader .article-summary-lead { font-size: 17px; }
  .guide-reader .prose { font-size: 16px; line-height: 1.8; }
  .article-outline { padding: 16px 18px; }
}

.library-card-art { height:160px; margin:calc(-1 * var(--library-card-padding)) calc(-1 * var(--library-card-padding)) 24px; padding:16px; background:var(--color-bg-card-subtle); border-bottom:1px solid var(--color-border-subtle); }
.library-card-art img { width:100%; height:100%; object-fit:contain; }
.guide-visual { margin:0 0 30px; padding:20px; border:1px solid var(--color-border-medium); border-radius:18px; background:var(--color-bg-card-subtle); text-align:center; }
.guide-visual img { display:block; width:100%; height:220px; object-fit:contain; }
.guide-visual figcaption { margin-top:10px; color:var(--color-ink-muted); font:400 11px/1.5 var(--font-sans); }
@media(max-width:520px){.guide-visual{padding:14px}.guide-visual img{height:160px}}

/* The whole source record is one comfortable target with its provenance. */
.guide-reader .sources-box li { margin-bottom: 0; padding-top: 6px; margin-top: 6px; }
.guide-reader .sources-box .source-record { display: flex; align-items: flex-start; gap: 14px; padding-block: 12px; min-height: 56px; text-decoration: none; }
.source-record-copy { display: grid; gap: 5px; flex: 1; }
.guide-reader .sources-box .source-record-title { font: 500 1rem/1.6 var(--font-sans); color: var(--color-ink-primary); }
.guide-reader .sources-box .source-record-meta { font: 400 var(--type-meta)/1.65 var(--font-sans); color: var(--color-ink-muted); }
.source-record > .ui-icon { width: 18px; height: 18px; flex: 0 0 18px; margin-top: 4px; }
.source-record:is(:hover, :focus-visible) .source-record-title { color: var(--color-accent-primary); text-decoration: underline; text-underline-offset: 4px; }