/* Resource library: static, accessible reading with optional discovery filters. */
.resource-page { background: var(--bg); }
.resource-page [hidden] { display: none !important; }
.resource-hero { padding-top: calc(var(--nav-h) + 2.5rem); padding-bottom: 3rem; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: .6rem; font-size: .8rem; color: var(--text-dim); margin-bottom: 2.5rem; }
.breadcrumbs a:hover, .guide-byline a:hover { color: var(--text); text-decoration: underline; }
.resource-hero-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 4rem; align-items: center; }
.resource-hero h1 { font-size: clamp(2.7rem, 5.5vw, 4.8rem); line-height: 1.06; margin: .75rem 0 1.5rem; max-width: 18ch; }
.resource-hero h1 em { font-weight: 400; color: var(--accent-light); }
.resource-hero .lead { max-width: 42rem; font-size: 1.1rem; line-height: 1.7; }
.resource-intro, .resource-note, .guide-byline { color: var(--text-dim); font-size: .9rem; line-height: 1.65; }
.resource-feature { padding: 2rem; background: var(--surface-solid); border: 1px solid var(--border-accent); border-radius: var(--radius); }
.resource-feature h2 { font-size: 2rem; margin: .65rem 0; }
.resource-feature p { color: var(--text-dim); margin: 0 0 1.5rem; }
.resource-stat { display: block; margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--border); font-size: 1.1rem; }
.resource-stat span { display: block; color: var(--text-dim); font-size: .85rem; margin-top: .25rem; }
.resource-category { color: var(--accent-light); font-size: .76rem; letter-spacing: .07em; text-transform: uppercase; font-weight: 600; margin: 0; }
.resource-tools { display: grid; grid-template-columns: auto minmax(160px, 1fr); gap: 1rem; align-items: center; padding: 1.5rem 0; border-block: 1px solid var(--border); }
.resource-tools label { font-size: .9rem; font-weight: 600; }
.resource-tools input { width: 100%; min-height: 48px; padding: .8rem 1rem; background: var(--surface-solid); border: 1px solid var(--border-accent); border-radius: 10px; color: var(--text); font: inherit; }
.resource-tools input::placeholder { color: var(--text-dim); }
.resource-filters { grid-column: 1/-1; display: flex; flex-wrap: wrap; gap: .55rem; }
.resource-filter { min-height: 44px; border: 1px solid var(--border-accent); border-radius: 999px; padding: .55rem 1rem; font-size: .8rem; color: var(--text-dim); }
.resource-filter[aria-pressed="true"] { background: var(--accent); color: #181025; border-color: var(--accent); }
.resource-filter:hover { border-color: var(--accent); }
.resource-count { margin: 1.25rem 0; font-size: .85rem; color: var(--text-dim); }
.resource-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; }
.resource-card { min-width: 0; overflow: hidden; border: 1px solid var(--border); border-radius: 16px; background: var(--surface-solid); display: flex; flex-direction: column; }
.resource-cover { display: block; overflow: hidden; aspect-ratio: 1; }
.resource-cover img { width: 100%; height: auto; }
.resource-card-body { padding: 1.4rem; flex: 1; display: flex; flex-direction: column; }
.resource-card h2 { font-family: var(--sans); font-size: 1.2rem; font-weight: 600; line-height: 1.4; margin: .6rem 0 .7rem; }
.resource-card h2 a:hover { text-decoration: underline; text-underline-offset: .2em; }
.resource-card-body > p:not(.resource-category) { color: var(--text-dim); font-size: .9rem; line-height: 1.7; margin: 0 0 1rem; }
.resource-card-links { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem; margin-top: auto; padding-top: .5rem; border-top: 1px solid var(--border); }
.resource-card-links a { display: inline-flex; align-items: center; min-height: 44px; gap: .4rem; font-size: .8rem; color: var(--accent-light); }
.resource-empty { padding: 3rem 1rem; text-align: center; background: var(--surface-solid); border-radius: 16px; }
.resource-about { padding: 4rem 0; max-width: min(100% - 3rem, 48rem); }
.resource-about h2 { font-size: 2.1rem; }
.resource-about p { color: var(--text-dim); line-height: 1.85; }
.resource-about a, .guide-source a, .guide-answer a, .guide-aside > a { color: var(--accent-light); text-decoration: underline; text-underline-offset: .2em; }
.detail-hero h1 { max-width: 22ch; }
.guide-byline { margin: 1.25rem 0; }
.download-size { font-size: .8rem; font-weight: 400; }
.guide-visuals { padding-bottom: 3.5rem; }
.guide-visuals > h2 { font-size: 1.35rem; margin-bottom: 1.3rem; font-family: var(--sans); font-weight: 500; }
.guide-page-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.3rem; }
.guide-page-grid figure { margin: 0; min-width: 0; }
.guide-page-grid img { border-radius: 10px; width: 100%; height: auto; }
.guide-page-grid a { display: block; }
.guide-page-grid figcaption { margin-top: .7rem; color: var(--text-dim); font-size: .8rem; line-height: 1.5; }
.resource-note { margin-top: 1.3rem; max-width: 58rem; }
.guide-reading { display: grid; grid-template-columns: minmax(0, 2fr) minmax(220px, 1fr); gap: 4rem; padding-block: 2rem 4rem; border-top: 1px solid var(--border); scroll-margin-top: 100px; }
.reading-column > h2 { font-size: 2.2rem; margin-bottom: 2rem; }
.guide-text-section { display: grid; grid-template-columns: 2rem minmax(0,1fr); gap: 1rem; margin-bottom: 2rem; }
.guide-page-number { font-size: .85rem; color: var(--accent-light); padding-top: .35rem; }
.guide-text-section h3 { font-family: var(--sans); font-size: 1.25rem; font-weight: 600; line-height: 1.4; margin: 0 0 .75rem; }
.reading-column p, .reading-column li { color: var(--text-dim); font-size: 1rem; line-height: 1.85; }
.reading-column ul { padding-left: 1.2rem; margin-top: 0; }
.guide-answer { border-top: 1px solid var(--border); padding-top: 1.4rem; }
.guide-answer h2 { font-size: 1.65rem; line-height: 1.3; }
.guide-source { margin-top: 2rem; }
.guide-aside { align-self: start; background: var(--surface-solid); border: 1px solid var(--border); padding: 1.6rem; border-radius: 14px; }
.guide-aside h2 { font-family: var(--sans); font-size: 1rem; font-weight: 600; margin-bottom: 1.2rem; }
.related-guide { display: flex; justify-content: space-between; gap: .8rem; min-height: 48px; align-items: center; padding: .7rem 0; border-bottom: 1px solid var(--border); font-size: .85rem; }
.related-guide span { flex: 0 0 auto; }
.guide-aside p { color: var(--text-dim); font-size: .85rem; margin-top: 1.5rem; }
.guide-aside > a:last-child { font-size: .83rem; overflow-wrap: anywhere; }
.resource-cta { display: flex; justify-content: space-between; align-items: center; gap: 2rem; border-top: 1px solid var(--border); padding-block: 3rem; }
.resource-cta h2 { font-size: 2.4rem; margin: .5rem 0; }
.resource-cta p { color: var(--text-dim); margin: 0; }
.resource-cta .btn { flex: 0 0 auto; }
.resource-footer { border-top: 1px solid var(--border); padding-block: 2.5rem; }
.resource-footer p, .resource-footer small { color: var(--text-dim); font-size: .85rem; }
.resource-footer nav { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; margin: .5rem 0 1rem; }
.resource-footer nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: .85rem; }
@media(max-width:1000px) { .resource-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .resource-hero-grid { gap: 2rem; } .guide-reading { gap: 2rem; } }
@media(max-width:760px) { .resource-hero-grid, .guide-reading { grid-template-columns: 1fr; } .resource-feature { max-width: 36rem; } .resource-cta { flex-direction: column; align-items: flex-start; } .guide-page-grid { gap: .7rem; } }
@media(max-width:560px) { .resource-grid, .guide-page-grid { grid-template-columns: 1fr; } .resource-hero { padding-top: calc(var(--nav-h) + 1.5rem); } .resource-hero h1 { font-size: 2.8rem; } .resource-tools { grid-template-columns: 1fr; gap: .65rem; } .resource-card-body { padding: 1.2rem; } .resource-feature { padding: 1.4rem; } .guide-page-grid { gap: 1.6rem; } .resource-about { padding-block: 3rem; } }