.ba-article-page { background: var(--bf-color-surface); }
.ba-reading-main { width: min(1120px, calc(100% - 64px)); margin: 0 auto; padding: 26px 0 88px; }
.ba-reading-main .ba-breadcrumb { margin: 0 0 36px; font-size: .85rem; }
.ba-reading-hero { display: grid; grid-template-columns: minmax(0, 1fr) 168px; align-items: center; gap: 40px; padding-bottom: 38px; border-bottom: 1px solid var(--bf-color-line); }
.ba-reading-title { margin: 0; max-width: 22ch; font: 400 3.2rem/1.1 var(--bf-font-serif); letter-spacing: -.025em; text-wrap: balance; }
.ba-reading-title span { display: block; margin-top: 18px; max-width: 34ch; font-size: 1.65rem; line-height: 1.3; letter-spacing: -.01em; color: var(--bf-color-ink-secondary); }
.ba-reading-meta { display: flex; flex-wrap: wrap; gap: 12px 24px; margin: 24px 0 0; color: var(--bf-color-brass); font-size: .85rem; }
.ba-reading-art { margin: 0; }
.ba-reading-art img { display: block; width: 100%; height: auto; }
.ba-reading-grid { display: grid; grid-template-columns: 232px minmax(0, 1fr); align-items: start; gap: 64px; margin-top: 42px; }
.ba-reading-toc { position: sticky; top: 104px; min-width: 0; padding-right: 18px; font-size: .85rem; }
.ba-reading-toc summary { min-height: 44px; font: 600 1rem/1.5 var(--bf-font-sans); color: var(--bf-color-ink); }
.ba-reading-toc ol { list-style: none; margin: 14px 0 0; padding: 0; }
.ba-reading-toc li { margin: 0; }
.ba-reading-toc a { display: block; min-height: 44px; padding: 10px 0; color: var(--bf-color-ink-secondary); line-height: 1.45; text-decoration: none; }
.ba-reading-toc a:hover { color: var(--bf-color-brass); text-decoration: underline; text-underline-offset: 4px; }
.ba-reading-toc li + li { border-top: 1px solid var(--bf-color-line); }
.ba-reading-prose { min-width: 0; max-width: 72ch; font: 400 1.125rem/1.8 var(--bf-font-sans); overflow-wrap: break-word; }
.ba-reading-prose p { margin: 0 0 22px; }
.ba-reading-prose > p:first-child { font-size: 1.23rem; line-height: 1.7; }
.ba-reading-prose strong { font-weight: 650; }
.ba-reading-prose h2 { margin: 54px 0 22px; font: 400 2.15rem/1.23 var(--bf-font-serif); letter-spacing: -.015em; text-wrap: balance; scroll-margin-top: 102px; }
.ba-reading-prose h3 { margin: 34px 0 18px; font: 600 1.025rem/1.45 var(--bf-font-sans); color: var(--bf-color-brass); }
.ba-reading-prose hr { border: 0; border-top: 1px solid var(--bf-color-line); margin: 44px 0 0; }
.ba-reading-prose hr + h2 { margin-top: 32px; }
.ba-reading-prose a { color: var(--bf-color-brass); text-decoration-thickness: 1px; text-underline-offset: 4px; }
.ba-reading-prose a:hover { color: var(--bf-color-ink); }
.ba-reading-prose ol { margin: 0; padding: 0 0 0 32px; }
.ba-reading-prose ol li { padding: 0 0 0 7px; margin: 0 0 20px; }
.ba-reading-prose ol li::marker { color: var(--bf-color-brass); font-size: .84em; font-variant-numeric: tabular-nums; }
.ba-reading-prose em { font-family: var(--bf-font-serif); }
.ba-reading-prose ul { margin: 20px 0 28px; padding-left: 22px; }
.ba-reading-prose ul li { padding-left: 5px; margin: 0 0 15px; }
.ba-reading-prose .ba-source-list { font-size: .9rem; line-height: 1.7; }
.ba-reading-back { display: inline-flex; align-items: center; min-height: 48px; margin-top: 40px; font-size: .9rem; }
.ba-reading-main :focus-visible { outline: 2px solid var(--bf-color-focus); outline-offset: 5px; border-radius: 2px; }
.ba-article-page ::selection { background: var(--bf-color-brass-fill); color: var(--bf-color-ink); }
.ba-with-photos .ba-reading-hero { display: block; padding-bottom: 32px; border: 0; }
.ba-with-photos .ba-reading-title { max-width: 27ch; }
.ba-with-photos .ba-reading-title span { max-width: 44ch; }
.ba-photo { min-width: 0; margin: 0; }
.ba-photo-open { display: block; overflow: hidden; border-radius: 12px; background: var(--bf-color-canvas); cursor: zoom-in; }
.ba-photo img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; }
.ba-photo-cover img { aspect-ratio: 16 / 9; object-position: 50% 52%; }
.ba-photo figcaption { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; padding: 12px 0 0; font: 400 .82rem/1.5 var(--bf-font-sans); color: var(--bf-color-ink-secondary); }
.ba-photo .ba-photo-name { display: block; }
.ba-photo-name > a { color: var(--bf-color-ink); text-decoration: none; font-weight: 600; }
.ba-photo-name > a:hover { text-decoration: underline; text-underline-offset: 3px; }
.ba-photo-name em { font-family: var(--bf-font-serif); white-space: nowrap; margin-left: .3em; }
.ba-photo figcaption small { font-size: .72rem; line-height: 1.6; }
.ba-photo figcaption small a { color: inherit; text-underline-offset: 3px; }
.ba-photo-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin: 30px 0 34px; }
.ba-photo-gallery-single { grid-template-columns: 1fr; }
.ba-photo-gallery-single img { aspect-ratio: 3 / 2; }
.ba-with-photos .ba-reading-grid { margin-top: 48px; }
.ba-visual-article .ba-reading-main { width: calc(100% - 64px); max-width: none; }
.ba-visual-article .ba-reading-grid { grid-template-columns: 200px minmax(0, 1fr); gap: 40px; }
.ba-visual-article .ba-reading-prose { max-width: none; }
.ba-visual-article .ba-reading-toc { padding-right: 0; }
.ba-story-opening { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 40px; align-items: center; }
.ba-story-opening .ba-reading-hero { padding: 0 0 36px; }
.ba-visual-article .ba-reading-prose > p { max-width: 92ch; }
.ba-habitat { position: relative; isolation: isolate; margin: 52px 0; border-radius: 16px; }
.ba-habitat-scenery { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.ba-habitat-sticky { position: sticky; top: 82px; height: calc(100svh - 82px); overflow: clip; border-radius: 16px; }
.ba-habitat-sticky img { width: 100%; height: 100%; object-fit: cover; opacity: .8; }
.ba-habitat-content { position: relative; padding: 32px; background: color-mix(in srgb, var(--bf-color-surface) 85%, transparent); border-radius: 16px; }
.ba-habitat-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, .8fr); align-items: center; gap: 30px; margin-bottom: 24px; }
.ba-habitat-heading h2 { margin: 0; max-width: 26ch; }
.ba-habitat-heading figure { margin: 0; }
.ba-habitat-heading img { display: block; width: 100%; height: auto; max-height: 270px; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 12px; }
.ba-habitat-heading figcaption { padding-top: 5px; font: 400 .72rem/1.5 var(--bf-font-sans); color: var(--bf-color-ink-secondary); text-align: right; }
.ba-habitat-content > p { max-width: 90ch; }
.ba-habitat-content > ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 42px; }
.ba-habitat-content > ol > li { padding-right: 12px; padding-bottom: 16px; border-bottom: 1px solid var(--bf-color-line); }
.ba-habitat-content > hr:last-child { display: none; }
.ba-habitat-content .ba-photo-gallery { margin-block: 30px 40px; }
.ba-habitat-content .ba-photo-gallery-single { max-width: 860px; }
.ba-subcategory { display: flex; align-items: center; gap: 16px; }
.ba-engine-symbols { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 2px; }
.ba-engine-symbols > img, .ba-engine-symbols > svg { display: block; width: 60px; height: 60px; object-fit: contain; overflow: hidden; }
.ba-falling-leaves { position: fixed; inset: 0; pointer-events: none; z-index: 3; overflow: clip; perspective: 700px; contain: layout style; }
.ba-falling-leaf { position: absolute; inset: 0 auto auto 0; display: block; background-size: 200% 200%; background-repeat: no-repeat; transform-origin: 50% 45%; backface-visibility: visible; will-change: transform, opacity; }
.ba-leaf-filter { position: absolute; width: 0; height: 0; overflow: hidden; }
@media (min-width: 900px) { .ba-visual-article .ba-reading-main { padding-top: 112px; } }
@media (max-width: 1040px) {
 .ba-reading-main { width: min(860px, calc(100% - 48px)); }
 .ba-reading-grid { grid-template-columns: 1fr; gap: 32px; margin-top: 28px; }
 .ba-reading-toc { position: static; padding: 16px 0; border-bottom: 1px solid var(--bf-color-line); }
 .ba-reading-toc summary { display: flex; align-items: center; justify-content: space-between; cursor: pointer; }
 .ba-reading-toc summary::after { content: '+'; color: var(--bf-color-brass); font-size: 1.4rem; }
 .ba-reading-toc[open] summary::after { content: '−'; }
 .ba-reading-toc ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 24px; margin-top: 4px; }
 .ba-reading-prose { max-width: 72ch; }
 .ba-reading-title { font-size: 2.8rem; }
 .ba-with-photos .ba-reading-title { max-width: 25ch; }
 .ba-visual-article .ba-reading-grid { grid-template-columns: 1fr; gap: 30px; }
 .ba-story-opening { gap: 28px; }
 .ba-story-opening .ba-reading-title { font-size: 2.45rem; }
 .ba-story-opening .ba-reading-title span { font-size: 1.35rem; }
 .ba-habitat-content { padding: 26px; }
 .ba-habitat-heading { grid-template-columns: minmax(0, 1fr) minmax(220px, .8fr); }
}
@media (max-width: 620px) {
 .ba-reading-main { width: calc(100% - 36px); padding-top: 18px; padding-bottom: 48px; }
 .ba-reading-main .ba-breadcrumb { margin-bottom: 28px; font-size: .78rem; }
 .ba-reading-hero { grid-template-columns: 1fr; gap: 0; padding-bottom: 24px; }
 .ba-reading-title { max-width: 22ch; font-size: 2.25rem; line-height: 1.13; }
 .ba-reading-title span { margin-top: 16px; font-size: 1.28rem; line-height: 1.35; }
 .ba-reading-art { display: none; }
 .ba-reading-meta { gap: 6px 16px; margin-top: 20px; font-size: .78rem; }
 .ba-reading-grid { margin-top: 12px; gap: 26px; }
 .ba-reading-toc { padding: 8px 0 10px; }
 .ba-reading-toc ol { grid-template-columns: 1fr; }
 .ba-reading-prose { font-size: 1.03rem; line-height: 1.75; }
 .ba-reading-prose > p:first-child { font-size: 1.11rem; line-height: 1.7; }
 .ba-reading-prose h2 { margin-top: 40px; font-size: 1.8rem; }
 .ba-reading-prose h3 { margin-top: 28px; font-size: 1rem; }
 .ba-reading-prose ol { padding-left: 29px; }
 .ba-reading-prose ol li { padding-left: 3px; margin-bottom: 20px; }
 .ba-reading-prose .ba-source-list { font-size: .86rem; }
 .ba-with-photos .ba-reading-hero { padding-bottom: 24px; }
 .ba-with-photos .ba-reading-title { max-width: 22ch; }
 .ba-photo-cover { margin-inline: -18px; }
 .ba-photo-cover .ba-photo-open { border-radius: 0; }
 .ba-photo-cover figcaption { padding-inline: 18px; }
 .ba-photo-cover img { aspect-ratio: 4 / 3; }
 .ba-photo-gallery { grid-template-columns: 1fr; gap: 25px; margin-block: 26px 32px; }
 .ba-photo-gallery-single img { aspect-ratio: 4 / 3; }
 .ba-with-photos .ba-reading-grid { margin-top: 22px; }
 .ba-visual-article .ba-reading-main { width: calc(100% - 36px); }
 .ba-story-opening { display: block; }
 .ba-story-opening .ba-reading-hero { padding-bottom: 24px; }
 .ba-story-opening .ba-reading-title { font-size: 2.25rem; }
 .ba-habitat { margin: 36px -10px; }
 .ba-habitat-content { padding: 20px 10px; background: color-mix(in srgb, var(--bf-color-surface) 91%, transparent); }
 .ba-habitat-heading { display: flex; flex-direction: column-reverse; align-items: stretch; gap: 18px; }
 .ba-habitat-heading h2 { font-size: 1.8rem; }
 .ba-habitat-content > ol { display: block; }
 .ba-habitat-content > ol > li { padding-right: 0; }
 .ba-subcategory { align-items: center; flex-wrap: wrap; gap: 8px; }
 .ba-engine-symbols > img, .ba-engine-symbols > svg { width: 48px; height: 48px; }
 .ba-engine-symbols { gap: 0; }
 .ba-habitat-sticky { top: 76px; height: calc(100svh - 76px); }
}
@media (prefers-reduced-motion: reduce) { .ba-article-page { scroll-behavior: auto; } .ba-falling-leaves { display: none; } .ba-habitat-sticky { position: static; height: 100%; } }
@media print {
 .bh-header, .bh-footer, .ba-reading-toc, .ba-reading-art, .ba-reading-back { display: none !important; }
 .ba-reading-main { width: 100%; padding: 0; }
 .ba-reading-grid { display: block; }
 .ba-reading-prose { max-width: none; font-size: 11pt; }
 .ba-reading-title { font-size: 26pt; }
 .ba-reading-prose h2, .ba-reading-prose h3 { break-after: avoid; }
 .ba-reading-prose li { break-inside: avoid; }
}