/* Index-only editorial system: no article or product-page overrides. */
.article-index { --index-accent: #116657; }
.article-index [hidden] { display: none !important; }
.article-index .blog-hero { padding: 58px 0 44px; background: linear-gradient(135deg,#f1f7f5,#fff 70%); }
.article-index .blog-hero-inner { grid-template-columns: minmax(0,1fr) 280px; gap: 64px; }
.article-index .blog-hero h1 { font-size: clamp(2.1rem,4.1vw,3.5rem); font-weight: 700; line-height: 1.2; letter-spacing: -.035em; text-wrap: balance; word-break: normal; }
.article-index:lang(ja) .blog-hero h1 { line-height: 1.45; letter-spacing: -.025em; word-break: auto-phrase; }
.article-index .eyebrow { font-size: .75rem; font-weight: 700; letter-spacing: .08em; color: var(--index-accent); }
.article-index .hero-lead { font-size: 1rem; font-weight: 400; line-height: 1.9; max-width: 650px; }
.article-index .hero-panel { padding: 0 0 0 24px; border: 0; border-left: 1px solid #cbdad5; border-radius: 0; background: none; box-shadow: none; }
.article-index .hero-panel strong { font-size: .9375rem; font-weight: 700; }
.article-index .hero-panel p { font-size: .875rem; line-height: 1.8; }
.article-index .hero-panel-link { font-weight: 600; }
.article-index .index-jump { display: inline-flex; align-items: center; gap: 20px; min-height: 44px; margin-top: 16px; font-weight: 600; color: var(--index-accent); text-decoration: underline; text-underline-offset: 5px; }
.article-index .blog-main { padding: 32px 0 80px; }
.article-index .index-topics { margin-bottom: 44px; border-block: 1px solid var(--line); }
.article-index .index-topics > summary { cursor: pointer; padding: 20px 2px; font-size: .9375rem; font-weight: 600; line-height: 1.6; }
.article-index .index-topics .topic-guide { margin: 0 0 24px; padding: 20px; background: var(--paper); border: 0; box-shadow: none; }
.article-index .topic-guide-heading h2 { font-size: 1.4rem; font-weight: 700; line-height: 1.5; }
.article-index .topic-grid { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.article-index .topic-card { min-height: 0; padding: 18px; gap: 4px; background: #fff; }
.article-index .topic-card h3 { font-weight: 700; margin-bottom: 8px; }
.article-index .topic-card a { display: flex; align-items: center; min-height: 44px; font-size: .875rem; font-weight: 500; line-height: 1.7; }
.article-index #article-library { scroll-margin-top: 96px; }
.article-index .library-heading { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.article-index .library-heading .eyebrow { margin-bottom: 8px; }
.article-index .library-heading h2 { margin: 0; font-size: clamp(1.5rem,3vw,2rem); font-weight: 700; letter-spacing: -.025em; line-height: 1.5; text-wrap: balance; }
.article-index .library-order { margin: 0; font-size: .875rem; color: var(--muted); line-height: 1.7; }
.article-index .article-finder { padding: 24px; border: 1px solid var(--line); border-radius: 16px; background: #f6f9f8; }
.article-index .article-search { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 10px 12px; }
.article-index .article-search label { grid-column: 1 / -1; font-size: .875rem; font-weight: 600; }
.article-index .article-search input { width: 100%; min-width: 0; min-height: 48px; padding: 12px 16px; border: 1px solid #b8c9c2; border-radius: 8px; background: #fff; font: inherit; font-size: 1rem; color: var(--ink); }
.article-index .article-search input::placeholder { color: #65736c; }
.article-index .article-search button,
.article-index .article-empty button { min-height: 48px; padding: 10px 16px; border: 1px solid #cbd8d2; border-radius: 8px; background: #fff; color: var(--index-accent); font: inherit; font-size: .875rem; font-weight: 600; cursor: pointer; }
.article-index .article-filters { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.article-index .article-filters button { min-height: 44px; padding: 9px 15px; border: 1px solid #d2ddd7; border-radius: 8px; background: #fff; color: #34433c; font: inherit; font-size: .875rem; font-weight: 500; cursor: pointer; line-height: 1.5; }
.article-index .article-filters button[aria-pressed="true"] { background: var(--index-accent); border-color: var(--index-accent); color: #fff; }
.article-index .article-result-count { margin: 20px 0; font-size: .875rem; font-variant-numeric: tabular-nums; color: var(--muted); }
.article-index .article-grid { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; }
.article-index .article-card { display: flex; flex-direction: column; gap: 0; min-height: 0; padding: 0; border-radius: 14px; overflow: hidden; box-shadow: none; }
.article-index .article-thumb { display: block; width: 100%; aspect-ratio: 16 / 9; align-self: stretch; border-radius: 0; border-bottom: 1px solid var(--line); background: #f1f5f6; }
.article-index .article-thumb img { width: 100%; height: 100%; padding: 12px; object-fit: contain; }
.article-index .article-thumb.editorial-thumb { display: flex; min-height: 0; padding: 20px; }
.article-index .editorial-thumb strong { font-size: 3.25rem; }
.article-index .editorial-thumb > span { font-size: .6875rem; }
.article-index .article-card-copy { display: flex; flex-direction: column; flex: 1; min-width: 0; padding: 22px; }
.article-index .card-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; min-height: 24px; margin-bottom: 12px; font-size: .75rem; font-weight: 600; line-height: 1.6; color: var(--index-accent); }
.article-index .card-resource { color: #596b76; font-weight: 500; padding-left: 10px; border-left: 1px solid #cdd8d7; }
.article-index .article-card h3 { margin: 0 0 12px; font-size: 1.2rem; font-weight: 700; line-height: 1.55; letter-spacing: -.015em; text-wrap: pretty; }
.article-index:lang(ja) .article-card h3 { line-height: 1.65; word-break: auto-phrase; }
.article-index .article-card p { font-size: .9375rem; font-weight: 400; line-height: 1.85; color: #53616d; }
.article-index .card-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 24px; }
.article-index .article-card time { font-size: .8125rem; font-weight: 400; font-variant-numeric: tabular-nums; line-height: 1.7; }
.article-index .card-arrow { color: var(--index-accent); font-size: 1.25rem; }
.article-index .article-empty { padding: 32px; border: 1px dashed #b8c9c2; border-radius: 14px; background: var(--paper); }
.article-index .article-empty h3 { margin: 0 0 12px; font-size: 1.15rem; line-height: 1.6; }
.article-index .article-empty p { font-size: 1rem; line-height: 1.8; }
.article-index :is(a,button,input,summary):focus-visible { outline: 3px solid var(--index-accent); outline-offset: 4px; }
@media (max-width: 1000px) {
 .article-index .article-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
 .article-index .blog-hero-inner { grid-template-columns: minmax(0,1fr); }
 .article-index .hero-panel { display: none; }
}
@media (max-width: 640px) {
 .article-index .blog-hero-inner, .article-index .blog-main { width: calc(100% - 40px); margin-inline: auto; }
 .article-index .blog-hero { padding: 36px 0 28px; }
 .article-index .blog-hero h1 { font-size: clamp(1.9rem,7.8vw,2.6rem); line-height: 1.25; }
 .article-index .hero-lead { max-width: none; word-break: normal; overflow-wrap: break-word; }
 .article-index .index-topics { margin-bottom: 30px; }
 .article-index .index-topics .topic-guide { padding: 16px; }
 .article-index .topic-grid, .article-index .article-grid { grid-template-columns: minmax(0,1fr); }
 .article-index .article-finder { padding: 16px; }
 .article-index .article-search { grid-template-columns: minmax(0,1fr); }
 .article-index .article-search button { justify-self: start; }
 .article-index .article-card-copy { padding: 20px; }
 .article-index .article-empty { padding: 24px; }
}
@media (prefers-reduced-motion: reduce) {
 html { scroll-behavior: auto; }
 .article-index .article-card { transition: none; }
 .article-index .article-card:hover { transform: none; }
}

/* Large editorial hooks stay readable at card size; SVGs retain crisp type. */
.article-index .article-thumb.hook-cover { aspect-ratio: 4 / 3; background: #102e39; }
.article-index .article-thumb.hook-cover img { padding: 0; object-fit: contain; }