/* Let There Be Simulation — site styles (layered over Bootstrap 5.3) */
:root {
  --font-read: ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, Cambria, "Times New Roman", serif;
  --font-ui: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --accent: #0f766e;
  --accent-soft: rgba(15, 118, 110, .09);
  --warm: #b45309;
  --warm-soft: rgba(180, 83, 9, .09);
  --rule: rgba(28, 35, 48, .14);
  --muted: #5b6573;
  --nav-h: 56px;
}
[data-bs-theme="light"] {
  --bs-body-bg: #faf8f3;
  --bs-body-color: #1c2330;
  --bs-emphasis-color: #0d1420;
  --bs-border-color: rgba(28, 35, 48, .14);
}
[data-bs-theme="dark"] {
  --bs-body-bg: #0d1117;
  --bs-body-color: #d5dbe6;
  --bs-emphasis-color: #f1f4fa;
  --bs-border-color: rgba(213, 219, 230, .16);
  --accent: #5eead4;
  --accent-soft: rgba(94, 234, 212, .09);
  --warm: #fbbf24;
  --warm-soft: rgba(251, 191, 36, .09);
  --rule: rgba(213, 219, 230, .16);
  --muted: #8f9bb0;
}

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { font-family: var(--font-ui); background: var(--bs-body-bg); }

.skip-link { position: fixed; top: 8px; left: 8px; z-index: 2000; background: var(--bs-body-bg); padding: .5rem .75rem; border-radius: .375rem; }

/* Progress bar */
.progress-bar-top { position: fixed; inset: 0 0 auto 0; height: 3px; z-index: 1100; background: var(--accent);
  transform: scaleX(0); transform-origin: 0 50%; }

/* Nav */
.site-nav { height: var(--nav-h); padding: 0; background: color-mix(in srgb, var(--bs-body-bg) 82%, transparent);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border-bottom: 1px solid var(--rule); }
.site-nav .navbar-brand { font-weight: 650; letter-spacing: -.01em; font-size: 1rem; }
.toc-toggle { display: inline-flex; align-items: center; gap: .4rem; }
#themeToggle { display: inline-flex; align-items: center; padding: .35rem .5rem; }
[data-bs-theme="light"] .icon-sun, [data-bs-theme="dark"] .icon-moon { display: none; }

/* Hero (always dark, "blueprint" look) */
.hero { position: relative; overflow: hidden; color: #e8edf7; background: #0b1220; isolation: isolate; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(60rem 28rem at 78% -10%, rgba(94,234,212,.20), transparent 60%),
    radial-gradient(40rem 24rem at 0% 110%, rgba(251,191,36,.12), transparent 60%),
    linear-gradient(rgba(148,163,184,.07) 1px, transparent 1px) 0 0 / 36px 36px,
    linear-gradient(90deg, rgba(148,163,184,.07) 1px, transparent 1px) 0 0 / 36px 36px; }
.hero-art { position: absolute; inset: 0; z-index: -1; opacity: 0; transition: opacity .8s ease;
  background-size: cover; background-position: center; }
.hero-art.has-image { opacity: .35; }
.hero::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(11,18,32,.2), rgba(11,18,32,.75)); }
.hero-inner { padding-block: clamp(3.5rem, 9vw, 7rem); max-width: 60rem; margin-inline: auto; }
.hero-kicker { font: 500 .8rem/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: #5eead4; margin-bottom: 1.25rem; }
.hero-title { font-family: var(--font-ui); font-weight: 750; letter-spacing: -.03em; line-height: 1.02;
  font-size: clamp(2.6rem, 8vw, 5.2rem); margin: 0 0 1rem; color: #fff; }
.hero-sub { font-size: clamp(1.15rem, 2.6vw, 1.6rem); line-height: 1.35; color: #cbd5e6; max-width: 40rem; margin-bottom: .75rem; }
.hero-tag { font-family: var(--font-read); font-style: italic; color: #9fb0c9; font-size: 1.05rem; margin-bottom: 1.5rem; }
.hero-meta { display: flex; flex-wrap: wrap; gap: .6rem; font: 500 .85rem var(--font-mono); color: #9fb0c9; margin-bottom: 2rem; }
.btn-hero { background: #5eead4; border-color: #5eead4; color: #04211d; font-weight: 600; }
.btn-hero:hover, .btn-hero:focus-visible { background: #99f6e4; border-color: #99f6e4; color: #04211d; }
.hero-credit { margin: 2.25rem 0 0; font-size: .8rem; color: #7f90ab; }

/* Layout + TOC */
.layout { padding-block: 2.5rem 4rem; }
.toc-panel { --bs-offcanvas-width: 320px; }
@media (min-width: 992px) {
  .toc-sticky { position: sticky; top: calc(var(--nav-h) + 20px); max-height: calc(100vh - var(--nav-h) - 40px);
    overflow-y: auto; padding: 0 .5rem 1rem 0; scrollbar-width: thin; }
}
.toc-group { font: 600 .7rem var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin: 1.25rem 0 .4rem; }
.toc-group:first-child { margin-top: 0; }
.toc-list { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--rule); }
.toc-link { display: flex; gap: .6rem; padding: .32rem .75rem; margin-left: -1px; border-left: 2px solid transparent;
  color: var(--muted); text-decoration: none; font-size: .88rem; line-height: 1.35; }
.toc-link:hover { color: var(--bs-emphasis-color); }
.toc-link.active { color: var(--accent); border-left-color: var(--accent); font-weight: 600; }
.toc-n { flex: 0 0 1.4rem; font-family: var(--font-mono); font-size: .75rem; padding-top: .1rem; opacity: .75; }

/* Article */
.article { --article-fs: 1.1875rem; font-family: var(--font-read); font-size: calc(var(--article-fs) * var(--fs-scale, 1)); line-height: 1.75; max-width: 46rem; }
.chapter { padding-block: 0 3rem; margin-bottom: 3rem; border-bottom: 1px solid var(--rule); }
.chapter:last-of-type { border-bottom: 0; }
.chapter-head { margin-bottom: 1.5rem; }
.kicker { font: 600 .75rem var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin: 0 0 .5rem; }
.article h2 { position: relative; font-family: var(--font-ui); font-weight: 720; letter-spacing: -.02em; line-height: 1.12;
  font-size: clamp(1.8rem, 4.2vw, 2.5rem); color: var(--bs-emphasis-color); margin: 0; }
.anchor { position: absolute; left: -1.4ch; color: var(--accent); text-decoration: none; opacity: 0; font-weight: 400; }
h2:hover .anchor, .anchor:focus-visible { opacity: .7; }
@media (max-width: 767px) { .anchor { display: none; } }
.article h3 { font-family: var(--font-ui); font-weight: 650; font-size: .97em; letter-spacing: -.005em; color: var(--bs-emphasis-color);
  margin: 2.25rem 0 .75rem; padding-bottom: .4rem; border-bottom: 1px solid var(--rule); }
.article p { margin: 0 0 1.15rem; }
.article p.lead { font-size: 1.136em; line-height: 1.6; color: var(--bs-emphasis-color); font-weight: 400; }
.article p.lead-in { font-weight: 600; margin-bottom: .6rem; color: var(--bs-emphasis-color); }

.points { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.points li { position: relative; padding: .15rem 0 .15rem 1.5rem; margin-bottom: .7rem; }
.points li::before { content: ""; position: absolute; left: .25rem; top: .8em; width: .42rem; height: .42rem;
  background: var(--accent); border-radius: 1px; transform: rotate(45deg); }
.points li.stage::before { background: var(--warm); }
.lbl { font-family: var(--font-ui); font-weight: 650; font-size: .95em; color: var(--bs-emphasis-color); }

/* Callouts */
.callout { margin: 1.5rem 0 1.75rem; padding: 1rem 1.15rem 1rem 1.25rem; border-radius: .5rem; border: 1px solid var(--rule); border-left-width: 4px; }
.callout p { margin: 0; font-size: .885em; line-height: 1.65; }
.callout p + p { margin-top: .6rem; }
.callout-tag { display: inline-block; font: 650 .7rem var(--font-mono); letter-spacing: .14em; text-transform: uppercase; margin-bottom: .4rem; }
.callout-hash { background: var(--warm-soft); border-left-color: var(--warm); }
.callout-hash .callout-tag { color: var(--warm); }
.callout-note { background: var(--accent-soft); border-left-color: var(--accent); }
.callout-note .callout-tag { color: var(--accent); }
.pullquote { font-family: var(--font-ui); font-weight: 700; font-size: clamp(1.6rem, 4vw, 2.2rem); letter-spacing: -.02em;
  line-height: 1.2; color: var(--bs-emphasis-color); margin: 2.5rem 0 0 !important; padding-left: 1.1rem; border-left: 4px solid var(--accent); }

/* Chapter variants */
.chapter-concl { background: var(--accent-soft); border: 1px solid var(--rule); border-radius: .75rem; padding: 2rem 1.5rem 2.25rem; }
@media (min-width: 768px) { .chapter-concl { padding: 2.5rem 2.5rem 2.75rem; } }
.chapter-check { border-left: 4px solid var(--warm); padding-left: 1.25rem; }
.chapter-check .kicker { color: var(--warm); }

/* Footer, to-top */
.site-footer { border-top: 1px solid var(--rule); padding-block: 2rem; color: var(--muted); font-size: .9rem; }
.to-top { position: fixed; right: 1rem; bottom: 1rem; z-index: 1000; width: 2.75rem; height: 2.75rem; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center; background: var(--accent); color: var(--bs-body-bg); border: 0;
  box-shadow: 0 4px 14px rgba(0,0,0,.25); }
.to-top[hidden] { display: none; }
.to-top:hover { filter: brightness(1.1); color: var(--bs-body-bg); }

@media (max-width: 575px) {
  .article { --article-fs: 1.0625rem; line-height: 1.7; }
}
@media print {
  .site-nav, .toc-panel, .progress-bar-top, .to-top, .hero-art, .btn-hero, .skip-link { display: none !important; }
  .hero { color: #000; background: none; }
  .hero::before, .hero::after { display: none; }
  .hero-title, .hero-sub, .hero-tag, .hero-meta, .hero-kicker, .hero-credit { color: #000 !important; }
  .article { max-width: none; font-size: 11pt; }
  .col-lg-9 { width: 100%; }
  .chapter { break-inside: auto; }
  h2, h3 { break-after: avoid; }
}

/* 404 page */
.hero-full { min-height: 100vh; display: flex; align-items: center; }

/* ===== Multi-page series additions ===== */
.site-nav .container-xl { display: flex; align-items: center; gap: .5rem; }
.site-nav .navbar-brand { flex: 1 1 auto; min-width: 0; margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-actions { display: flex; gap: .4rem; flex: 0 0 auto; }
.nav-btn { display: inline-flex; align-items: center; gap: .4rem; padding: .35rem .6rem; }
@media (max-width: 420px) { .nav-btn span:not(.fs-aa) { display: none !important; } .site-nav .navbar-brand { font-size: .9rem; } }

.hero-compact .hero-inner { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.hero-compact .hero-title { font-size: clamp(2rem, 5.4vw, 3.6rem); line-height: 1.08; margin-bottom: .9rem; }
.hero-compact .hero-sub { font-size: clamp(1.05rem, 2.2vw, 1.35rem); margin-bottom: 1rem; }
.hero-compact .hero-meta { margin-bottom: .5rem; }
.hero-compact .hero-credit { margin-top: 1rem; }
.btn-hero-ghost { color: #e8edf7; border: 1px solid rgba(232,237,247,.45); background: transparent; font-weight: 600; }
.btn-hero-ghost:hover, .btn-hero-ghost:focus-visible { color: #04211d; background: #e8edf7; border-color: #e8edf7; }

/* Series panel + toc-n for appendix letters */
.series-panel { --bs-offcanvas-width: 360px; }
.series-nav .series-home { display: inline-block; margin-bottom: .25rem; color: var(--muted); text-decoration: none; font-size: .88rem; }
.series-nav .series-home.active, .series-nav .series-home:hover { color: var(--accent); }

/* Article-body components */
.chapter-article { padding-bottom: 2rem; margin-bottom: 2rem; }
.chapter-article:last-of-type { border-bottom: 0; }
.chapter-article.intro { border-bottom: 0; padding-bottom: 0; margin-bottom: 1rem; }
.chapter-article > h2 { font-size: clamp(1.5rem, 3.4vw, 2rem); margin-bottom: 1.1rem; }
.article h3 { scroll-margin-top: calc(var(--nav-h) + 16px); }
.lead-in.tag { display: inline-block; font: 650 .72rem var(--font-mono); letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent); background: var(--accent-soft); padding: .2rem .55rem; border-radius: .25rem; margin: .4rem 0 .5rem; }
blockquote.scripture { margin: 1.25rem 0 1.4rem; padding: .85rem 1.1rem; border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 0 .4rem .4rem 0; }
blockquote.scripture p { margin: 0; font-style: italic; font-size: .91em; line-height: 1.65; }
blockquote.scripture cite { display: block; margin-top: .4rem; font: 600 .78rem var(--font-mono); letter-spacing: .04em; color: var(--accent); font-style: normal; }
.equation { font: 500 .97em var(--font-mono); text-align: center; padding: .8rem; background: var(--accent-soft); border-radius: .4rem; }
.keyverses { font: 500 .68em var(--font-mono); color: var(--muted); letter-spacing: .02em; margin: -.4rem 0 1.1rem !important; }
.note-caps { font: 650 .85rem var(--font-ui); letter-spacing: .1em; color: var(--accent); }

/* Prev / next */
.page-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 3rem; font-family: var(--font-ui); }
.pn { display: flex; flex-direction: column; gap: .2rem; padding: 1rem 1.1rem; border: 1px solid var(--rule); border-radius: .6rem; text-decoration: none; color: var(--bs-body-color); }
.pn:hover { border-color: var(--accent); background: var(--accent-soft); }
.pn-next { text-align: right; grid-column: 2; }
.pn-prev { grid-column: 1; }
.pn-dir { font: 600 .72rem var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.pn-title { font-weight: 650; line-height: 1.3; }
@media (max-width: 575px) { .page-nav { grid-template-columns: 1fr; } .pn-next, .pn-prev { grid-column: auto; text-align: left; } }

/* Home */
.home { padding-top: 3rem; }
.home-group { margin-bottom: 3.25rem; }
.home-group > h2 { font-family: var(--font-ui); font-weight: 720; letter-spacing: -.02em; font-size: clamp(1.5rem, 3.4vw, 2rem); color: var(--bs-emphasis-color); margin: 0 0 .35rem; }
.home-blurb { color: var(--muted); margin-bottom: 1.25rem; font-family: var(--font-ui); }
.series-grid { display: grid; gap: .9rem; grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr)); }
.series-grid.two { grid-template-columns: repeat(auto-fill, minmax(min(100%, 24rem), 1fr)); }
.series-card { display: flex; flex-direction: column; gap: .35rem; padding: 1.1rem 1.2rem; border: 1px solid var(--rule); border-radius: .7rem;
  text-decoration: none; color: var(--bs-body-color); font-family: var(--font-ui); background: color-mix(in srgb, var(--bs-body-bg) 92%, var(--accent) 8%); transition: border-color .15s, transform .15s; }
.series-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.sc-meta { display: flex; flex-wrap: wrap; align-items: center; gap: .45rem; font: 600 .7rem var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.badge-new { background: var(--warm); color: var(--bs-body-bg); border-radius: .25rem; padding: .05rem .4rem; letter-spacing: .06em; }
.sc-title { font-weight: 700; font-size: 1.08rem; line-height: 1.25; color: var(--bs-emphasis-color); }
.sc-sub { font-size: .9rem; color: var(--muted); line-height: 1.4; }

/* Search */
.search-page { max-width: 54rem; }
.search-title { font-family: var(--font-ui); font-weight: 750; letter-spacing: -.02em; }
.search-page { --pagefind-ui-scale: 1; --pagefind-ui-primary: var(--accent); --pagefind-ui-text: var(--bs-body-color); --pagefind-ui-background: var(--bs-body-bg);
  --pagefind-ui-border: var(--rule); --pagefind-ui-tag: var(--accent-soft); --pagefind-ui-font: var(--font-ui); }
.article p.lead-in:not(.tag) { font-weight: 500; color: var(--bs-emphasis-color); }

/* Archive link at top of the guide's contents */
.archive-link { display: block; margin: 0 0 1.1rem; padding: .65rem .85rem; border: 1px solid var(--rule); border-left: 3px solid var(--warm);
  border-radius: .4rem; text-decoration: none; font-family: var(--font-ui); background: var(--warm-soft); color: var(--bs-emphasis-color); }
.archive-link span { display: block; font-weight: 650; font-size: .92rem; }
.archive-link small { display: block; color: var(--muted); font-size: .78rem; }
.archive-link:hover span { color: var(--warm); }

/* ===== Scrollable sidebar (Bootstrap's .offcanvas-lg forced overflow-y:visible) ===== */
@media (min-width: 992px) {
  .offcanvas-lg .offcanvas-body.toc-sticky { display: block; overflow-y: auto; overscroll-behavior: contain; }
}
.toc-sticky { scrollbar-width: thin; }

/* ===== Archive tree ===== */
.tree { margin: 0 0 1.25rem; font-family: var(--font-ui); }
.tree summary { cursor: pointer; list-style: none; }
.tree summary::-webkit-details-marker { display: none; }
.tree-sum { display: block; position: relative; padding: .65rem 2rem .65rem .85rem; border: 1px solid var(--rule); border-left: 3px solid var(--warm);
  border-radius: .4rem; background: var(--warm-soft); color: var(--bs-emphasis-color); }
.tree-sum .tree-title { display: block; font-weight: 650; font-size: .92rem; }
.tree-sum small { display: block; color: var(--muted); font-size: .78rem; }
.tree-sum::after, .tree-group > summary::before { content: ""; width: .45rem; height: .45rem; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
  transform: rotate(-45deg); transition: transform .15s; opacity: .7; }
.tree-sum::after { position: absolute; right: .9rem; top: 50%; margin-top: -.3rem; }
.tree-top[open] > .tree-sum::after { transform: rotate(45deg); }
.tree-body { padding: .6rem 0 0 .25rem; }
.tree-group { margin: .15rem 0; }
.tree-group > summary { display: flex; align-items: center; gap: .55rem; padding: .35rem .4rem; font-size: .82rem; font-weight: 650; color: var(--bs-emphasis-color); border-radius: .3rem; }
.tree-group > summary:hover { background: var(--accent-soft); }
.tree-group[open] > summary::before { transform: rotate(45deg); }
.tree-count { margin-left: auto; font: 500 .7rem var(--font-mono); color: var(--muted); }
.tree-list { list-style: none; margin: .1rem 0 .4rem .65rem; padding: 0 0 0 .5rem; border-left: 1px solid var(--rule); }
.tree-link { display: flex; gap: .5rem; padding: .28rem .5rem; color: var(--muted); text-decoration: none; font-size: .84rem; line-height: 1.35; border-radius: .3rem; }
.tree-body > .tree-link { padding-left: .4rem; }
.tree-link:hover { color: var(--bs-emphasis-color); background: var(--accent-soft); }
.tree-link.current { color: var(--accent); font-weight: 650; background: var(--accent-soft); }
.tree-n { flex: 0 0 1.1rem; font: 500 .72rem var(--font-mono); opacity: .75; padding-top: .1rem; }
.toc + .tree { margin-top: 1.5rem; }
.xref { color: var(--accent); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent); text-underline-offset: .15em; }
.xref:hover { text-decoration-color: var(--accent); }

/* Search box must follow the site theme, not the OS setting (Pagefind's CSS keys off prefers-color-scheme) */
.search-page .pagefind-ui__search-input { color: var(--bs-body-color) !important; background-color: var(--bs-body-bg) !important; border-color: var(--rule) !important; }
.search-page .pagefind-ui__search-input::placeholder { color: var(--muted) !important; opacity: 1; }
.search-page .pagefind-ui__search-input:focus { border-color: var(--accent) !important; }
.search-page .pagefind-ui__search-clear { color: var(--bs-body-color) !important; background-color: var(--bs-body-bg) !important; }
.search-page .pagefind-ui__result-link, .search-page .pagefind-ui__result-title, .search-page .pagefind-ui__result-excerpt,
.search-page .pagefind-ui__message, .search-page .pagefind-ui__button { color: var(--bs-body-color) !important; }
.search-page .pagefind-ui__button { background-color: var(--bs-body-bg) !important; border-color: var(--rule) !important; }
.search-page .pagefind-ui__result-excerpt mark { color: #1c2330 !important; }

/* ===== Text-size control ===== */
.fs-aa { font: 700 .9rem/1 var(--font-read); letter-spacing: -.02em; }
.fs-panel { min-width: 15rem; padding: .75rem; background: var(--bs-body-bg); border-color: var(--rule); }
.fs-label { display: flex; justify-content: space-between; margin: 0 0 .6rem; font: 600 .78rem var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.fs-panel .btn { font-weight: 650; }
.fs-panel .btn:disabled { opacity: .35; }

/* Keep the top bar on one line on phones */
.site-nav .container-xl { flex-wrap: nowrap; }
@media (max-width: 575px) {
  .nav-actions { gap: .25rem; }
  .nav-btn { padding: .35rem .5rem; }
  .site-nav .container-xl { gap: .35rem; }
  .fs-panel { min-width: 13.5rem; }
}

/* Theme toggle and text-size button: identical square icon buttons */
#themeToggle, .fs-menu > .nav-btn { width: 2.2rem; height: 2rem; padding: 0; justify-content: center; }

/* media */
.tree-media { display: flex; align-items: center; gap: .55rem; margin: 0 0 .6rem; padding: .5rem .85rem; border: 1px solid var(--rule); border-radius: .4rem; font: 600 .86rem var(--font-ui); color: var(--bs-emphasis-color); text-decoration: none; }
.tree-media:hover { background: var(--accent-soft); color: var(--accent); }
.tree-media span { color: var(--accent); font-size: .75rem; }
.media-strip { display: block; margin: .9rem 0 0; padding: 0; border: 0; background: none; font: 500 .9rem var(--font-ui); color: rgba(255,255,255,.78); }
.media-strip a { color: #7fe3c4; text-decoration: underline; text-underline-offset: .15em; }
.media-strip a:hover { color: #fff; }
.media-page { max-width: 54rem; }
.media-block { margin-bottom: 2.5rem; }
.media-block h2 { font-size: 1.5rem; margin-bottom: .3rem; }
.video-frame { position: relative; aspect-ratio: 16 / 9; width: 100%; background: #000; border-radius: .5rem; overflow: hidden; border: 1px solid var(--rule); }
.video-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.media-alt { font-family: var(--font-ui); font-size: .92rem; margin-top: .6rem; }

/* toc sub-headings */
.toc-sub { margin: .9rem 0 .15rem .15rem; padding-left: .6rem; font: 650 .64rem var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--accent); list-style: none; }

/* ===== Print refinements ===== */
.print-src { display: none; }
@media print {
  @page { margin: 1.7cm 1.5cm; }
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  html, body { background: #fff !important; }
  .print-src { display: block; margin: 0 0 .8rem; padding-bottom: .4rem; border-bottom: 1px solid #999; font: 9pt var(--font-mono); color: #333; }
  .hero-inner, .hero-compact .hero-inner { padding-block: .5rem 1rem; }
  .hero-compact .hero-title { font-size: 26pt; }
  .kicker, .chapter-head { break-after: avoid; }
  .callout, blockquote.scripture, .points li, .pullquote { break-inside: avoid; }
  .media-strip, .media-strip a { color: #000 !important; }
  .media-strip a[href]::after, .article a[href^="http"]::after { content: " (" attr(href) ")"; font-size: .82em; word-break: break-all; }
  a { text-decoration: none; }
  .site-footer { border-top: 1px solid #999; padding-block: 1rem; font-size: 9pt; color: #333; }
  .page-nav { display: none !important; }
  .chapter-ch, .chapter-concl, .chapter-app { break-before: page; }
  .chapter { border-bottom: 0; margin-bottom: 1.5rem; padding-bottom: 0; }
}