.resource-detail-page main { width: min(calc(100% - 3rem), var(--max)); margin: auto; padding-top: 125px; }
.resource-breadcrumb { color: var(--muted); font-size: .82rem; display: flex; flex-wrap: wrap; gap: .5rem; }
.resource-breadcrumb a, .resource-text-link { color: var(--cyan); }
.resource-detail-hero { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(2rem, 6vw, 6rem); align-items: center; padding: 4rem 0 6rem; }
.resource-detail-hero h1 { font-size: clamp(2.7rem, 4.8vw, 5rem); line-height: 1.05; letter-spacing: -.045em; }
.resource-detail-name { font-size: 1.1rem; color: var(--cyan); margin: 2rem 0 .6rem; font-weight: 650; }
.resource-detail-intro { font-size: 1.1rem; color: #c6d1df; max-width: 620px; }
.resource-detail-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1.4rem; margin-top: 2rem; }
.resource-detail-format { color: var(--muted); font-size: .85rem; }
.resource-preview { margin: 0; padding: 1.5rem; background: radial-gradient(ellipse at top right, #123751, #09192a 70%); border: 1px solid var(--line); }
.resource-preview img { width: 100%; height: auto; display: block; box-shadow: 0 20px 45px #0006; }
.resource-preview figcaption { color: #b5c5d7; font-size: .75rem; margin-top: 1rem; }
.resource-detail-section { border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 7vw, 7rem); padding: 4rem 0; }
.resource-detail-section h2, .resource-example h2 { font-size: clamp(2rem, 3.4vw, 3.4rem); line-height: 1.1; letter-spacing: -.035em; font-weight: 560; margin: 0 0 1.4rem; }
.resource-detail-section p, .resource-example p { color: #bdcad8; }
.resource-detail-section h3 { font-size: 1.15rem; margin: 0 0 .5rem; }
.resource-contents { margin: 0; padding-left: 1.2rem; }
.resource-contents li { padding: 0 0 1.25rem .6rem; color: #c8d5e2; }
.resource-contents li::marker, .resource-use-steps li::marker { color: var(--cyan); }
.resource-use-steps { margin: 0; padding-left: 1.3rem; }
.resource-use-steps li { padding: 0 0 1.3rem .6rem; }
.resource-use-steps p { margin: 0; }
.resource-example { padding: 3rem; background: #0b1d30; border-left: 2px solid var(--cyan); margin-bottom: 4rem; }
.resource-example > p { max-width: 850px; }
.resource-example .resource-caveat { color: var(--muted); font-size: .85rem; margin-bottom: 0; }
.resource-related { padding: 0; list-style: none; }
.resource-related li { padding: 1rem 0; border-bottom: 1px solid var(--line); }
.resource-related a { display: flex; justify-content: space-between; gap: 1rem; }
.resource-related span { color: var(--cyan); }
.resource-detail-limits { color: var(--muted); font-size: .8rem; max-width: 750px; margin: 0 0 4rem; }
.resource-detail-page a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 5px; }
.resource-detail-page a:hover { text-decoration: underline; text-underline-offset: .2em; }
.resource-icon { width: 21px; height: 21px; flex: none; vertical-align: middle; stroke-width: 1.65; }
.resource-topic-mark { display: flex; align-items: center; gap: 1rem; color: var(--cyan); margin-bottom: 1.8rem; font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; }
.resource-topic-mark > svg { width: 46px; height: 46px; padding: 10px; border: 1px solid #2cd4ff55; border-radius: 12px; background: #2cd4ff08; }
.resource-detail-hero .workbook-name { font-size: clamp(2.5rem, 4.5vw, 4.6rem); }
.section-kicker .resource-icon { margin-right: .6rem; color: var(--cyan); }
.resource-text-link { display: inline-flex; align-items: center; gap: .6rem; }
.workbook-cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; margin: 2.5rem 0; }
.workbook-case { padding-top: 1rem; border-top: 1px solid #2cd4ff55; }
.workbook-case h3 { font-size: 1.15rem; line-height: 1.4; }
.workbook-case .section-kicker { font-size: .65rem; letter-spacing: .08em; }
.workbook-boundaries { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.workbook-boundaries dt { color: #e7f0f8; font-weight: 650; margin-bottom: .8rem; }
.workbook-boundaries dt .resource-icon { display: block; margin-bottom: .7rem; color: var(--cyan); }
.workbook-boundaries dd { margin: 0; color: #bdcad8; font-size: .9rem; }
.library-topic-icon { display: block; margin-bottom: .7rem; color: var(--cyan); }
.resource-row h3 a:hover { color: var(--cyan); }
.resource-row > a .resource-icon { width: 18px; height: 18px; margin-left: .4rem; }
@media (max-width: 900px) { .workbook-cases, .workbook-boundaries { grid-template-columns: 1fr; } }
@media (max-width: 760px) {
  .resource-detail-page main { width: calc(100% - 2rem); padding-top: 115px; }
  .resource-detail-hero, .resource-detail-section { grid-template-columns: 1fr; }
  .resource-detail-hero { padding: 2.5rem 0 3rem; gap: 2rem; }
  .resource-detail-hero h1 { font-size: clamp(2.4rem, 9vw, 4rem); }
  .resource-detail-hero .eyebrow { font-size: .65rem; letter-spacing: .1em; }
  .resource-preview { max-width: 410px; margin: auto; padding: 1rem; }
  .resource-detail-section { padding: 2.5rem 0; gap: 1.5rem; }
  .resource-example { padding: 1.5rem; margin-bottom: 2.5rem; }
}

.resource-preview figcaption a { display: flex; align-items: center; justify-content: space-between; gap: .5rem; color: var(--cyan); font-size: .95rem; font-weight: 650; }
.resource-preview figcaption > span { display: block; margin-top: .5rem; }
.resource-full-preview { border: 1px solid var(--line); margin: 0 0 4rem; background: #09192a; scroll-margin-top: 110px; }
.resource-full-preview summary { cursor: pointer; padding: 1.5rem; color: var(--cyan); font-size: 1.15rem; font-weight: 650; }
.resource-full-preview summary > svg { margin: 0 .6rem; }
.resource-full-preview summary > span { display: block; color: #b5c5d7; font-size: .8rem; font-weight: 400; margin: .5rem 0 0 2.2rem; }
.preview-help { color: #b5c5d7; margin: 0 1.5rem 1.5rem; font-size: .9rem; }
.resource-preview-pages { max-height: 80vh; overflow: auto; padding: clamp(.6rem, 3vw, 2rem); background: #102538; overscroll-behavior: contain; }
.resource-preview-pages figure { width: min(100%, 850px); margin: 0 auto 2rem; }
.resource-preview-pages img { display: block; width: 100%; height: auto; background: #fff; }
.resource-preview-pages figcaption { color: #bdcad8; text-align: center; font-size: .8rem; padding-top: .6rem; }
.resource-full-preview :focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.preview-zoom { margin: 0 .5rem 1.5rem 1.5rem; accent-color: var(--cyan); width: 1rem; height: 1rem; }
.preview-zoom-label { color: var(--cyan); font-size: .9rem; cursor: pointer; }
.preview-zoom-label span { color: #b5c5d7; font-size: .75rem; margin-left: .6rem; }
.preview-zoom:checked ~ .resource-preview-pages figure { width: 850px; max-width: none; }
@media (max-width: 500px) { .preview-zoom-label span { display: block; margin: -.8rem 1.5rem 1rem 3rem; } }