.page-header { padding-top: 7rem; background: #1a1714; }
  .page-header-inner { max-width: var(--max-wide); margin: 0 auto; padding: 3rem var(--col-pad) 3.5rem; }
  .page-label { font-family: var(--sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: rgba(245,242,238,0.55); margin-bottom: 1.25rem; display: flex; align-items: center; gap: 0.75rem; opacity: 0; animation: fadeInUp 0.6s ease 0.2s forwards; }
  .page-label::before { content: ""; width: 24px; height: 1px; background: #2b4a6f; flex-shrink: 0; }
  .page-title { font-family: var(--serif); font-size: clamp(3rem, 6vw, 5.5rem); font-weight: 400; line-height: 0.95; letter-spacing: -0.03em; color: #f5f2ee; margin-bottom: 1.75rem; opacity: 0; animation: fadeInUp 0.6s ease 0.35s forwards; }
  .page-title em { font-style: italic; color: #d4cfc9; }
  .page-standfirst { font-family: var(--sans); font-size: 1.05rem; font-weight: 300; line-height: 1.8; color: rgba(245,242,238,0.72); max-width: 600px; opacity: 0; animation: fadeInUp 0.6s ease 0.5s forwards; }
  .book-section { background: #f5f2ee; padding: 5rem var(--col-pad); border-bottom: 1px solid var(--rule); }
  .book-section:nth-child(even) { background: #ede9e3; }
  .book-inner { max-width: var(--max-wide); margin: 0 auto; display: grid; grid-template-columns: 200px 1fr; gap: 4rem; align-items: start; }
  .book-spine { display: flex; flex-direction: column; align-items: flex-start; padding-top: 0.5rem; }
  .book-num { font-family: var(--serif); font-size: 5rem; font-style: italic; font-weight: 400; color: #7f7c79; line-height: 1; margin-bottom: 1rem; display: block; }
  .book-year-tag { font-family: var(--sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: #f5f2ee; background: #2b4a6f; padding: 0.35rem 0.75rem; display: inline-block; margin-bottom: 1rem; }
  .book-format { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: #5c5652; }
  .book-content { background: transparent; }
  .book-kicker { font-family: var(--sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: #2b4a6f; margin-bottom: 1rem; display: flex; align-items: center; gap: 0.75rem; }
  .book-kicker::before { content: ""; width: 24px; height: 1px; background: #2b4a6f; flex-shrink: 0; }
  .book-title { font-family: var(--serif); font-size: clamp(2rem, 4vw, 3rem); font-weight: 400; line-height: 1.1; letter-spacing: -0.02em; color: #1a1714; margin-bottom: 0.5rem; }
  .book-subtitle { font-family: var(--sans); font-size: 1rem; font-weight: 300; font-style: italic; color: #5c5652; margin-bottom: 2rem; line-height: 1.5; }
  .book-rule { width: 48px; height: 2px; background: #2b4a6f; border: none; margin-bottom: 2rem; }
  .book-desc { font-size: 1.0625rem; font-weight: 400; line-height: 1.85; color: #1a1714; margin-bottom: 1.25rem; background: transparent; }
  .book-desc:last-of-type { margin-bottom: 2rem; }
  .book-themes { background: transparent; border-top: 1px solid #d4cfc9; padding-top: 1.75rem; margin-top: 0.5rem; margin-bottom: 2rem; }
  .book-themes-label { font-family: var(--sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: #5c5652; margin-bottom: 1rem; display: block; background: transparent; }
  .themes-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 0.5rem; background: transparent; }
  .theme-item { font-size: 0.875rem; font-weight: 400; color: #1a1714; padding: 0.5rem 0; border-top: 1px solid #ede9e3; background: transparent; display: flex; align-items: center; gap: 0.5rem; }
  .theme-item::before { content: ""; width: 4px; height: 4px; background: #2b4a6f; border-radius: 50%; flex-shrink: 0; }
  .book-reviews { margin-top: 2rem; background: transparent; }
  .reviews-label { font-family: var(--sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: #5c5652; margin-bottom: 1.25rem; display: block; }
  .review-item { border-left: 2px solid #d4cfc9; padding: 0.75rem 1.25rem; margin-bottom: 1rem; background: transparent; transition: border-color 0.2s; }
  .review-item:hover { border-color: #2b4a6f; }
  .review-item:last-child { margin-bottom: 0; }
  .review-text { font-family: var(--serif); font-size: 0.975rem; font-style: italic; line-height: 1.65; color: #1a1714; margin-bottom: 0.5rem; background: transparent; }
  .review-source { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: #5c5652; }
  .book-cta { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 2.5rem; align-items: center; background: transparent; }
  .all-books-cta { background: #2b4a6f; padding: 4rem var(--col-pad); text-align: center; }
  .all-books-inner { max-width: 560px; margin: 0 auto; }
  .all-books-heading { font-family: var(--serif); font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 400; color: #f5f2ee; line-height: 1.2; margin-bottom: 1rem; }
  .all-books-sub { font-size: 1rem; font-weight: 300; color: rgba(245,242,238,0.75); margin-bottom: 2rem; line-height: 1.7; }
@media (max-width: 760px) {
  .page-header-inner { padding-bottom: 3rem; }
  .book-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .book-spine { flex-direction: row; align-items: center; gap: 1.5rem; }
  .book-num { font-size: 3.5rem; margin-bottom: 0; }
  .themes-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 580px) {
  .themes-grid { grid-template-columns: 1fr; }
}
  .framework-section { padding: 4rem var(--col-pad); border-top: 2px solid #1a1714; }
  .framework-section-1 { background: #f0ece6; }
  .framework-section-2 { background: #e8e2da; }
  .framework-section-3 { background: #f0ece6; }
  .framework-inner { max-width: var(--max-wide); margin: 0 auto; }
  .framework-header { margin-bottom: 3rem; }
  .framework-kicker { font-family: var(--sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: #2b4a6f; margin-bottom: 0.875rem; display: flex; align-items: center; gap: 0.75rem; }
  .framework-kicker::before { content: ""; width: 24px; height: 1px; background: #2b4a6f; flex-shrink: 0; }
  .framework-heading { font-family: var(--serif); font-size: clamp(1.5rem, 2.5vw, 2.25rem); font-weight: 400; line-height: 1.2; color: #1a1714; margin-bottom: 0.75rem; }
  .framework-standfirst { font-size: 1rem; font-weight: 300; color: #3d3935; line-height: 1.8; max-width: 640px; }
  .framework-rule { width: 48px; height: 2px; background: #2b4a6f; border: none; margin: 1.5rem 0 2.5rem; }
  .five-is-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; margin-bottom: 3rem; border: 1px solid #d4cfc9; }
  .i-card { padding: 1.75rem 1.25rem; border-right: 1px solid #d4cfc9; background: #f5f2ee; position: relative; overflow: hidden; }
  .i-card:last-child { border-right: none; }
  .i-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; }
  .i-card-1::before { background: #2E6B8A; }
  .i-card-2::before { background: #7B5F3A; }
  .i-card-3::before { background: #6B3FA0; }
  .i-card-4::before { background: #B03A2E; }
  .i-card-5::before { background: #2b4a6f; }
  .i-card-num { font-family: var(--serif); font-size: 2.5rem; font-style: italic; line-height: 1; margin-bottom: 0.75rem; color: #7f7c79; }
  .i-card-label { font-family: var(--sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 0.75rem; display: block; }
  .i-card-1 .i-card-label { color: #2E6B8A; }
  .i-card-2 .i-card-label { color: #7B5F3A; }
  .i-card-3 .i-card-label { color: #6B3FA0; }
  .i-card-4 .i-card-label { color: #B03A2E; }
  .i-card-5 .i-card-label { color: #2b4a6f; }
  .i-card-title { font-family: var(--serif); font-size: 1.1rem; font-weight: 500; color: #1a1714; line-height: 1.3; margin-bottom: 0.75rem; }
  .i-card-desc { font-size: 0.8125rem; color: #3d3935; line-height: 1.7; background: transparent; }
  .paths-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; margin-bottom: 3rem; }
  .path-card { background: #1a1714; padding: 1.75rem; border-left: 3px solid #2b4a6f; }
  .path-num { font-family: var(--sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: rgba(245,242,238,0.55); margin-bottom: 0.4rem; }
  .path-name { font-family: var(--serif); font-size: 1.1rem; font-weight: 500; color: #f5f2ee; margin-bottom: 0.5rem; line-height: 1.3; }
  .path-desc { font-size: 0.8125rem; color: rgba(245,242,238,0.6); line-height: 1.65; margin-bottom: 1rem; background: transparent; }
  .path-actions { list-style: none; padding: 0; border-top: 1px solid rgba(255,255,255,0.08); padding-top: 0.875rem; }
  .path-actions li { font-size: 0.8rem; color: rgba(245,242,238,0.72); line-height: 1.6; padding: 0.3rem 0; padding-left: 0.875rem; position: relative; background: transparent; }
  .path-actions li::before { content: ""; position: absolute; left: 0; top: 0.7rem; width: 4px; height: 4px; background: #2b4a6f; border-radius: 50%; }
  .principles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 3rem; }
  .principle-card { background: #f5f2ee; border: 1px solid #d4cfc9; border-top: 3px solid #2b4a6f; padding: 1.25rem; }
  .principle-code { font-family: var(--sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: #2b4a6f; margin-bottom: 0.5rem; display: block; }
  .principle-title { font-family: var(--serif); font-size: 1rem; font-weight: 500; color: #1a1714; margin-bottom: 0.5rem; line-height: 1.3; }
  .principle-desc { font-size: 0.8rem; color: #3d3935; line-height: 1.65; background: transparent; }
  .pillars-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 3rem; }
  .pillar-card { background: #f5f2ee; border: 1px solid #d4cfc9; padding: 1.5rem; position: relative; overflow: hidden; }
  .pillar-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; }
  .pillar-p1::before { background: #2E6B8A; }
  .pillar-p2::before { background: #B03A2E; }
  .pillar-p3::before { background: #2b4a6f; }
  .pillar-p4::before { background: #5c5652; }
  .pillar-icon { font-size: 1.25rem; margin-bottom: 0.75rem; display: block; opacity: 0.6; }
  .pillar-name { font-family: var(--serif); font-size: 1rem; font-weight: 500; color: #1a1714; margin-bottom: 0.5rem; }
  .pillar-desc { font-size: 0.8rem; color: #3d3935; line-height: 1.65; background: transparent; }
  .tests-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid #d4cfc9; margin-bottom: 3rem; }
  .test-fw-card { padding: 1.75rem; border-right: 1px solid #d4cfc9; background: #1a1714; }
  .test-fw-card:last-child { border-right: none; }
  .test-fw-num { font-family: var(--serif); font-size: 2rem; font-style: italic; color: rgba(212,207,201,0.2); line-height: 1; margin-bottom: 0.75rem; }
  .test-fw-name { font-family: var(--serif); font-size: 1.15rem; font-weight: 400; color: #f5f2ee; margin-bottom: 0.5rem; }
  .test-fw-question { font-size: 0.8rem; font-style: italic; color: rgba(245,242,238,0.55); margin-bottom: 0.75rem; line-height: 1.5; background: transparent; }
  .test-fw-desc { font-size: 0.8rem; color: rgba(245,242,242,0.7); line-height: 1.65; background: transparent; }
  .audience-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid #d4cfc9; }
  .audience-card { padding: 1.5rem; border-right: 1px solid #d4cfc9; background: #f5f2ee; }
  .audience-card:last-child { border-right: none; }
  .audience-num { font-family: var(--serif); font-size: 1.75rem; font-style: italic; color: #7f7c79; line-height: 1; margin-bottom: 0.5rem; }
  .audience-label { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: #2b4a6f; margin-bottom: 0.5rem; display: block; }
  .audience-title { font-family: var(--serif); font-size: 0.975rem; font-weight: 500; color: #1a1714; margin-bottom: 0.5rem; line-height: 1.3; }
  .audience-items { list-style: none; padding: 0; margin-top: 0.75rem; border-top: 1px solid #d4cfc9; padding-top: 0.75rem; }
  .audience-items li { font-size: 0.775rem; color: #3d3935; line-height: 1.6; padding: 0.2rem 0; padding-left: 0.75rem; position: relative; background: transparent; }
  .audience-items li::before { content: ""; position: absolute; left: 0; top: 0.65rem; width: 3px; height: 3px; background: #2b4a6f; border-radius: 50%; }
  .framework-download { background: #2b4a6f; padding: 2rem; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1.5rem; margin-top: 3rem; }
  .framework-download-text {  }
  .framework-download-heading { font-family: var(--serif); font-size: 1.25rem; font-weight: 400; color: #f5f2ee; margin-bottom: 0.3rem; }
  .framework-download-sub { font-size: 0.875rem; color: rgba(245,242,238,0.78); line-height: 1.5; }
  .btn-download { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; text-decoration: none; padding: 0.875rem 1.75rem; min-height: 44px; background: #f5f2ee; color: #2b4a6f; border: 2px solid #f5f2ee; transition: all 0.2s; flex-shrink: 0; }
  .btn-download:hover { background: #1a1714; border-color: #1a1714; color: #f5f2ee; }
@media (max-width: 900px) {
  .five-is-grid { grid-template-columns: 1fr 1fr; }
  .i-card:nth-child(5) { border-right: none; }
  .paths-grid { grid-template-columns: 1fr; }
  .principles-grid { grid-template-columns: 1fr 1fr; }
  .pillars-row { grid-template-columns: 1fr 1fr; }
  .tests-row { grid-template-columns: 1fr; }
  .test-fw-card { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.08); }
  .test-fw-card:last-child { border-bottom: none; }
  .audience-row { grid-template-columns: 1fr 1fr; }
  .audience-card:nth-child(2) { border-right: none; }
  .audience-card:nth-child(3) { border-top: 1px solid #d4cfc9; }
  .audience-card:nth-child(4) { border-right: none; border-top: 1px solid #d4cfc9; }
  .framework-download { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 580px) {
  .five-is-grid { grid-template-columns: 1fr; }
  .i-card { border-right: none; border-bottom: 1px solid #d4cfc9; }
  .principles-grid { grid-template-columns: 1fr; }
  .pillars-row { grid-template-columns: 1fr; }
  .audience-row { grid-template-columns: 1fr; }
  .audience-card { border-right: none; border-bottom: 1px solid #d4cfc9; }
}
  .btn-follow-substack { background: transparent; color: rgba(245,242,238,0.7); border: 2px solid rgba(245,242,238,0.25); font-family: var(--sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; text-decoration: none; padding: 0.875rem 1.75rem; min-height: 44px; display: inline-flex; align-items: center; transition: all 0.2s; }
  .btn-follow-substack:hover,
  .btn-follow-substack:focus-visible { border-color: rgba(245,242,238,0.6); color: #f5f2ee; }
/* Former inline style attributes. Moved out so the CSP can drop
   'unsafe-inline' from style-src — a style="" attribute is blocked
   by that directive just as an inline <style> block is. */
  .x-books-1.x-books-1.x-books-1 { background:transparent; }
  .x-books-2.x-books-2.x-books-2 { color:#2E6B8A; }
  .x-books-3.x-books-3.x-books-3 { color:#7B5F3A; }
  .x-books-4.x-books-4.x-books-4 { color:#6B3FA0; }
  .x-books-5.x-books-5.x-books-5 { color:#B03A2E; }
  .x-books-6.x-books-6.x-books-6 { color:var(--accent-lift); }
  .x-books-7.x-books-7.x-books-7 { background:#556170; }
  .x-books-8.x-books-8.x-books-8 { color:#6a94c4; }
  .x-books-9.x-books-9.x-books-9 { color:rgba(245,242,238,0.5); }
  .x-books-10.x-books-10.x-books-10 { color:rgba(245,242,238,0.65); }
  .x-books-11.x-books-11.x-books-11 { background:transparent; margin-top:2rem; }
  .x-books-12.x-books-12.x-books-12 { background:#2b4a6f; }
  .x-books-13.x-books-13.x-books-13 { background:#f5f2ee; }
  .x-books-14.x-books-14.x-books-14 { font-family:var(--serif);font-size:1.35rem;font-weight:400;color:#1a1714;margin-bottom:1.5rem; }
  .x-books-15.x-books-15.x-books-15 { background:#ede9e3; }
  .x-books-16.x-books-16.x-books-16 { font-size:3.5rem;letter-spacing:-0.02em;font-style:italic;color:#7f7c79; }
  .x-books-17.x-books-17.x-books-17 { background:#1a1714; border-bottom:none; }
  .x-books-18.x-books-18.x-books-18 { color:#f5f2ee; }
  .x-books-19.x-books-19.x-books-19 { color: rgba(245,242,238,0.55); }
  .x-books-20.x-books-20.x-books-20 { display:flex;gap:1rem;flex-wrap:wrap;justify-content:center;margin-bottom:1.5rem; }
  .x-books-21.x-books-21.x-books-21 { font-size:0.85rem;color:rgba(245,242,238,0.78);margin-top:0.5rem; }