on the line under a heading. Sits BELOW the heading's rule; the heading itself is untouched, so its own H1/H2 rule stays identical to a subtitle-less heading's. The :has() rule only trims the heading's bottom MARGIN (not its rule) to a fixed .5rem, so H1 and H2 both leave the same ~5px gap under the rule. */ .content .mdb-subtitle{margin-block:0 0;font-size:1.9rem;font-style:italic;line-height:1.35;color:var(--muted);} .content h1:has(+ .mdb-subtitle),.content h2:has(+ .mdb-subtitle){margin-block-end:.5rem;} /* Blockquote, GitHub-style. Scoped to :not(.blockquote-tag) so mdBook's native admonitions (> [!NOTE] etc., which ARE .blockquote-tag) keep their coloured accent. padding:0 on the block edges plus zeroing the first child's top margin and the last child's bottom margin is what keeps the rule flush with the text — without the margin reset the inner
margins push the rule past the text, top and bottom. */
.content blockquote:not(.blockquote-tag){background:none;border-block:0;border-inline-start:3px solid var(--rule);padding:0 1em;color:var(--muted);}
.content blockquote:not(.blockquote-tag) > :first-child{margin-block-start:0;}
.content blockquote:not(.blockquote-tag) > :last-child{margin-block-end:0;}
/* Aside: , a digression callout — muted, 0.82em, a thin left rule.
mdBook does not parse markdown inside it; write emphasis or links as HTML. */
.content aside{font-size:.82em;color:var(--muted);border-inline-start:2px solid var(--rule);padding-inline-start:1em;margin:1.15rem 0;}
/* mdBook's own .content a is text-decoration:none, and --links carries the colour.
Only the underline is added here; the colour comes from the palette. Search
results use --links too, so without an underline they render as plain body text
with no affordance at all — give them the same one. */
.content a,.content a:visited{text-decoration:underline;text-underline-offset:2px;}
#mdbook-searchresults a{text-decoration:underline;text-underline-offset:2px;}
/* The sidebar list is left alone. mdBook's own .chapter li.chapter-item is
line-height:1.5em; margin-block-start:0.6em — already in em, so it scales with
the 1.6rem set above, and it is what spaces the rule a SUMMARY '---' draws.
Overriding it in px-equivalent terms only tightens that rule against the text. */
/* Palette. mdBook defines ~43 colour variables per theme; overriding only the page
and sidebar leaves blockquotes, tables, the search UI, icons and separators in the
stock blues, which show the moment a page has a table or quote — so this covers
every one that paints. html. at load, so inline code is code.hljs
in the browser: repaint it here from the palette. Warm fill + the theme's own accent
text (ffb454/b5540a) + a hairline drawn as an inset shadow, which — unlike a border —
does not change the inline box's metrics. :not(pre) excludes block code (its parent
is ); :not(a) leaves linked code to the link styling. code.hljs makes this
(0,1,3), over mdBook's own (0,1,2) and the bare .hljs (0,1,0); custom.css is last. */
:not(pre):not(a) > code.hljs{background-color:var(--inline-bg);color:var(--inline-code-color);box-shadow:inset 0 0 0 1px var(--inline-border);}
/* print.css resets layout but not colour, and the UA drops backgrounds when
printing — so a reader whose OS is dark prints near-white ink onto white paper.
Force ink-on-paper for the print media regardless of the theme in force. */
@media print{
html{--bg:#fff;--fg:#111;--links:#111;--inline-code-color:#111;--inline-bg:#f5f5f5;--inline-border:#ddd;--muted:#444;
--rule:#ccc;--rule-strong:#999;--quote-bg:#fff;--quote-border:#ccc;--code-bg:#f5f5f5;
--table-border-color:#ccc;--table-header-bg:#eee;--table-alternate-bg:#fff;}
}
#mdbook-menu-bar .icon-button{font:inherit;line-height:var(--menu-bar-height);}
:root{--mdb-top-gap:2.4rem;}
.content main > :first-child{margin-block-start:var(--mdb-top-gap);}
.chapter{margin-block-start:0;}
.chapter > li:first-child{margin-block-start:0;}
.chapter > li.chapter-item:empty:first-child + li{margin-block-start:0;}
.chapter li.chapter-item:empty{margin-block:0;}
.chapter li.part-title{line-height:1.5em;margin-block:1.7em .55em;padding-block-end:.3em;border-block-end:1px solid var(--rule-strong,var(--table-border-color));}
.content hr{border:0;height:1px;background-color:var(--rule-strong,var(--table-border-color));margin:3.2rem 0;}
.chapter .spacer{height:1px;margin-block:1.6em;}
.sidebar .mdb-sitemeta{margin-top:1rem;padding:1rem 0 .5rem;border-top:1px solid var(--rule,rgba(128,128,128,.25));font-size:1.3rem;line-height:1.5;color:var(--sidebar-fg);opacity:.8;}
.sidebar .mdb-sitemeta a{color:inherit;text-decoration:underline dotted;text-underline-offset:3px;}
.mdb-print-back{margin:0 0 2rem;font-size:.85em;}
@media print{.mdb-print-back{display:none;}}
@media screen{
.content main:has(.mdb-wide,.mdb-bleed){max-width:1000px;}
.content main:has(.mdb-bleed) > :not(.mdb-bleed){box-sizing:border-box;max-width:var(--content-max-width);margin-inline:auto;}
}
.sidebar .sidebar-scrollbox{padding-top:0;}
.sidebar-scrollbox::before{position:sticky;top:0;box-sizing:border-box;background-color:var(--sidebar-bg);border-block-end:1px solid transparent;}
.sidebar-scrollbox.mdb-scrolled::before{border-block-end-color:var(--table-border-color);}
.menu-title{transition:opacity .3s;}
html.sidebar-visible .menu-title{opacity:0;}
.sidebar-scrollbox::before{content:"Docwright";display:block;height:calc(var(--menu-bar-height) + 1px);margin-block-end:var(--mdb-top-gap);font-size:2.7rem;font-weight:200;line-height:calc(var(--menu-bar-height) - 4px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
pre:has(> .mdb-gutter){display:flex;align-items:stretch;}
pre > .mdb-gutter{flex:0 0 auto;-webkit-user-select:none;user-select:none;white-space:pre;text-align:right;font-family:var(--mono-font);font-size:var(--code-font-size);padding:1rem .8em 1rem 1rem;background-color:var(--code-bg,transparent);color:var(--muted,#999);border-right:1px solid var(--rule,rgba(128,128,128,.25));}
pre > .mdb-gutter + code.hljs{flex:1 1 auto;min-width:0;padding-left:1em;}
@media print{
pre:has(> .mdb-gutter){display:block;}
pre > .mdb-gutter{display:none;}
pre > .mdb-gutter + code.hljs{padding-left:1rem;}
}