/* handbook theme — a manual. Cool paper, ink navy, one blue accent. Inter Tight for headings, IBM Plex Sans body, Plex Mono labels. */
:root {
  --paper: #f5f7fa; --paper-2: #ffffff; --band: #eaeef4;
  --ink: #0e1626; --ink-2: #3b475a; --muted: #6b7686; --rule: #d5dbe4; --rule-2: #b9c2cf;
  --accent: #1d4ed8; --accent-ink: #1e40af; --accent-bg: #e8efff; --tag: #9a6b12; --tag-bg: #fbf1dc; --focus: #f2b632; --green: #3fbf94;
  --dark: #0e1626; --dark-text: #d5dbe4; --dark-muted: #8e99ab;
  --max: 80rem; --measure: 66ch;
  --display: "Inter Tight", "Segoe UI", Helvetica, Arial, sans-serif;
  --body: "IBM Plex Sans", "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--body); font-size: 1.02rem; line-height: 1.62; }
a { color: var(--accent-ink); text-underline-offset: .15em; text-decoration-thickness: 1px; } a:hover { color: var(--accent); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: #fff; padding: .5rem 1rem; } .skip:focus { left: 1rem; z-index: 10; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }
.mono { font-family: var(--mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.mono.small, .small { font-size: .64rem; }
.muted { color: var(--muted); }

/* masthead */
.masthead { background: var(--paper-2); border-bottom: 1px solid var(--rule); position: sticky; top: 0; z-index: 30; }
.masthead-grid { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem 1.6rem; padding: .7rem 1.25rem; }
.brand { display: flex; align-items: center; gap: .7rem; text-decoration: none; color: var(--ink); flex: 0 0 auto; }
.mark { display: grid; place-items: center; width: 2.4rem; height: 2.4rem; background: var(--accent); color: #fff; border-radius: 6px; font-family: var(--display); font-weight: 800; font-size: 1.15rem; }
.wordmark { font-family: var(--display); font-weight: 700; font-size: 1.1rem; line-height: 1.05; letter-spacing: -.01em; }
.wordmark em { font-style: normal; color: var(--accent); }
.wordmark small { display: block; font-family: var(--mono); font-size: .56rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-top: .3rem; font-weight: 400; }
.sitenav { display: flex; flex-wrap: wrap; gap: 0 1.2rem; flex: 1 1 auto; min-width: 0; }
.sitenav a { font-family: var(--display); font-weight: 600; font-size: .86rem; color: var(--ink-2); text-decoration: none; padding: .5rem 0; border-bottom: 2px solid transparent; white-space: nowrap; }
.sitenav a[aria-current="page"] { color: var(--accent); border-bottom-color: var(--accent); }
.pub { margin: 0; white-space: nowrap; margin-left: auto; } @media (max-width: 80rem) { .pub { display: none; } }
@media (max-width: 64rem) { .sitenav { flex-basis: 100%; order: 3; } }

/* front */
.front { background: var(--paper-2); border-bottom: 1px solid var(--rule); }
.front-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 3rem; align-items: center; padding-top: 3.2rem; padding-bottom: 2.8rem; }
@media (max-width: 62rem) { .front-grid { grid-template-columns: 1fr; } }
.kicker { font-family: var(--mono); font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin: 0 0 .9rem; }
.claim { font-family: var(--display); font-weight: 800; font-size: clamp(2.3rem, 5.4vw, 4.2rem); line-height: 1.02; letter-spacing: -.035em; margin: 0 0 .8rem; max-width: 16ch; text-wrap: balance; }
.frame { margin: 0 0 1.2rem; }
.lead { font-size: 1.15rem; line-height: 1.55; color: var(--ink-2); max-width: 60ch; margin: 0 0 1.4rem; }
.cta-row { margin: 0; display: flex; gap: .7rem; flex-wrap: wrap; }
.btn { display: inline-block; font-family: var(--display); font-weight: 700; font-size: .92rem; background: var(--accent); color: #fff; padding: .6rem 1.1rem; border-radius: 6px; text-decoration: none; }
.btn:hover { background: var(--accent-ink); color: #fff; }
.btn.quiet { background: transparent; color: var(--accent-ink); border: 1.5px solid var(--rule-2); }
.front-card { background: var(--accent-bg); border-radius: 10px; padding: 1.2rem 1.4rem; }
.front-card p { margin: 0 0 .6rem; }
.chapters { border-bottom: 1px solid var(--rule); }
.chapters .wrap { padding-top: 2.2rem; padding-bottom: 2.4rem; }
.chapters h2 { font-family: var(--display); font-weight: 700; font-size: 1.6rem; letter-spacing: -.02em; margin: .3rem 0 1rem; }
.ch-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .9rem; }
@media (max-width: 62rem) { .ch-grid { grid-template-columns: 1fr 1fr; } } @media (max-width: 40rem) { .ch-grid { grid-template-columns: 1fr; } }
.ch-card { display: flex; flex-direction: column; gap: .35rem; background: var(--paper-2); border: 1px solid var(--rule); border-radius: 8px; padding: .9rem 1rem; text-decoration: none; color: var(--ink); }
.ch-card:hover { border-color: var(--accent); color: var(--ink); }
.ch-card strong { font-family: var(--display); font-weight: 700; font-size: 1.05rem; line-height: 1.25; }
.ch-sum { font-size: .88rem; color: var(--ink-2); }

/* layout with chapter rail */
.layout { display: grid; grid-template-columns: 13rem minmax(0, 1fr) 16rem; gap: 2.5rem; padding-top: 2.2rem; padding-bottom: 4rem; align-items: start; }
@media (max-width: 70rem) { .layout { grid-template-columns: minmax(0, 1fr) 16rem; } .rail-left { display: none; } }
@media (max-width: 56rem) { .layout { grid-template-columns: 1fr; } }
.rail-left { position: sticky; top: 4.2rem; font-size: .84rem; }
.rail-h { margin: 0 0 .5rem; color: var(--ink) !important; font-weight: 500; }
.rail-sec { margin: .9rem 0 .25rem; color: var(--accent) !important; }
.rail-left ol { list-style: none; margin: 0; padding: 0; }
.rail-left li a { display: block; padding: .28rem 0; color: var(--ink-2); text-decoration: none; border-left: 2px solid transparent; padding-left: .5rem; margin-left: -.5rem; line-height: 1.35; }
.rail-left li.current a { color: var(--accent-ink); border-left-color: var(--accent); font-weight: 500; }
.rail-left .n { font-family: var(--mono); font-size: .62rem; color: var(--muted); margin-right: .45rem; }
.entry { max-width: var(--measure); min-width: 0; }
.ch-head h1 { font-family: var(--display); font-weight: 800; font-size: clamp(1.9rem, 4.2vw, 2.9rem); line-height: 1.08; letter-spacing: -.03em; margin: 0 0 1rem; text-wrap: balance; }
.meta-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .8rem; margin: 0 0 1.4rem; padding: .8rem 1rem; background: var(--paper-2); border: 1px solid var(--rule); border-radius: 8px; }
@media (max-width: 40rem) { .meta-strip { grid-template-columns: 1fr; } }
.meta-strip div { min-width: 0; } .meta-strip dt { margin-bottom: .15rem; } .meta-strip dd { margin: 0; font-size: .92rem; }
.slot { font-family: var(--mono); font-size: .64rem; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); margin: 0 0 .5rem; font-weight: 500; }
.answer { border-left: 4px solid var(--accent); background: var(--paper-2); padding: .9rem 1.2rem; margin: 0 0 1.4rem; border-radius: 0 8px 8px 0; }
.answer p { margin: 0; font-size: 1.08rem; line-height: 1.55; }
.contents { margin: 0 0 1.4rem; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding: .7rem 0; }
.contents ol { margin: 0; padding-left: 1.3rem; columns: 2; column-gap: 2rem; font-size: .9rem; line-height: 1.7; }
.contents li { break-inside: avoid; } .contents a { color: var(--ink-2); text-decoration: none; } .contents a:hover { color: var(--accent); }
@media (max-width: 40rem) { .contents ol { columns: 1; } }

/* body */
.body h2, .faq h2, .sources-sec h2, .related h2, .who h2 { font-family: var(--display); font-weight: 700; font-size: 1.45rem; letter-spacing: -.02em; line-height: 1.2; margin: 2rem 0 .6rem; }
.body h3, .faq h3 { font-family: var(--display); font-weight: 600; font-size: 1.05rem; margin: 1.3rem 0 .35rem; }
.body p, .faq p { margin: 0 0 1rem; } .body ul, .body ol { padding-left: 1.3rem; margin: 0 0 1rem; } .body li { margin-bottom: .3rem; }
.body blockquote { margin: 1.2rem 0; padding: .8rem 1rem; border-left: 3px solid var(--tag); background: var(--tag-bg); border-radius: 0 6px 6px 0; } .body blockquote p { margin: 0; }
.body table { border-collapse: collapse; width: 100%; font-size: .9rem; display: block; overflow-x: auto; margin: 1rem 0 1.4rem; border-right: 1px solid var(--rule); }
.body th, .body td { text-align: left; vertical-align: top; padding: .5rem .6rem; border-bottom: 1px solid var(--rule); }
.body thead th { font-family: var(--mono); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); border-bottom: 2px solid var(--ink); }
.label { display: inline-block; font-family: var(--mono); font-size: .58rem; letter-spacing: .06em; text-transform: uppercase; color: var(--tag); background: var(--tag-bg); border: 1px solid var(--tag); padding: .05rem .4rem; vertical-align: middle; margin-left: .3rem; border-radius: 3px; }

/* steps */
.steps { background: var(--paper-2); border: 1px solid var(--rule); border-radius: 10px; padding: 1rem 1.2rem .9rem; margin: 1.6rem 0; }
.steps .slot { margin-bottom: .1rem; } .steps > p { margin: 0 0 .6rem; }
.steps ol { list-style: none; margin: 0; padding: 0; counter-reset: st; }
.steps li { display: grid; grid-template-columns: 1.5rem 1fr; gap: .7rem; padding: .6rem 0; border-top: 1px solid var(--rule); align-items: start; counter-increment: st; }
.steps input[type="checkbox"] { width: 1.15rem; height: 1.15rem; margin: .25rem 0 0; accent-color: var(--accent); }
.steps label { cursor: pointer; } .steps label strong { display: block; font-family: var(--display); font-weight: 600; }
.steps label strong::before { content: counter(st, decimal-leading-zero) " "; font-family: var(--mono); font-size: .66rem; color: var(--accent); margin-right: .3rem; vertical-align: .1em; }
.steps label span { color: var(--ink-2); font-size: .92rem; }
.steps .status { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-top: .7rem; padding-top: .7rem; border-top: 2px solid var(--ink); font-family: var(--mono); font-size: .72rem; }
.steps .status output { color: var(--accent-ink); }
button { font-family: var(--display); font-weight: 700; font-size: .84rem; background: var(--ink); color: #fff; border: 1.5px solid var(--ink); padding: .38rem .85rem; cursor: pointer; border-radius: 6px; } button:hover { background: var(--accent); border-color: var(--accent); }
button.quiet { background: transparent; color: var(--ink); } button.quiet:hover { color: var(--accent); background: var(--paper); }

/* who does this well, related, pager, cite */
.who { margin: 2rem 0 0; padding: 1.2rem 1.4rem; background: var(--dark); color: var(--dark-text); border-radius: 10px; }
.who .mono { color: var(--dark-muted); } .who h2 { color: #fff; margin: .3rem 0 .5rem; font-size: 1.4rem; } .who p { margin: 0 0 .5rem; } .who a { color: #fff; }
.sources { padding-left: 1.2rem; font-size: .94rem; } .sources li { margin-bottom: .4rem; }
.related ul { list-style: none; padding: 0; margin: 0; } .related li { display: flex; justify-content: space-between; gap: 1rem; padding: .45rem 0; border-top: 1px solid var(--rule); font-size: .95rem; }
.related li a { text-decoration: none; color: var(--ink); font-weight: 500; } .related li a:hover { color: var(--accent); }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 2rem 0 0; }
.pager a { display: block; padding: .8rem 1rem; border: 1px solid var(--rule); border-radius: 8px; text-decoration: none; color: var(--ink); font-family: var(--display); font-weight: 600; background: var(--paper-2); }
.pager a:hover { border-color: var(--accent); color: var(--accent-ink); } .pager .next { text-align: right; } .pager .mono { display: block; margin-bottom: .2rem; }
.entry-foot { margin-top: 2rem; border-top: 2px solid var(--ink); padding-top: 1rem; }
.cite { padding: .2rem 0 .6rem; } .cite p { margin: .3rem 0 .6rem; font-size: .9rem; word-break: break-word; }
.disclosure { margin: .8rem 0 0; padding: .8rem 1rem; border: 1px dashed var(--tag); background: var(--tag-bg); font-size: .9rem; border-radius: 6px; }

/* right rail */
.rail { position: sticky; top: 4.2rem; display: grid; gap: 1.2rem; } @media (max-width: 56rem) { .rail { position: static; } }
.infobox { background: var(--paper-2); border: 1px solid var(--rule); border-radius: 8px; padding: .7rem .9rem; }
.infobox table { width: 100%; border-collapse: collapse; font-size: .84rem; margin-top: .3rem; }
.infobox th, .infobox td { text-align: left; vertical-align: top; padding: .38rem 0; border-bottom: 1px solid var(--rule); }
.infobox th { font-family: var(--mono); font-weight: 500; font-size: .6rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); width: 40%; padding-right: .6rem; }
.infobox tr:last-child th, .infobox tr:last-child td { border-bottom: 0; }
.rail-entity { border-left: 3px solid var(--accent); padding: .1rem 0 .1rem .8rem; font-size: .88rem; } .rail-entity p { margin: 0 0 .3rem; }

/* footer */
.sitefoot { background: var(--dark); color: var(--dark-text); border-top: 4px solid var(--accent); padding: 2.4rem 0 2rem; margin-top: 1rem; }
.sitefoot a { color: #fff; } .sitefoot .mono { color: var(--dark-muted); margin: 0 0 .5rem; letter-spacing: .06em; font-size: .68rem; line-height: 1.7; }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) 19rem; gap: 3rem; } @media (max-width: 62rem) { .foot-grid { grid-template-columns: 1fr; gap: 2rem; } }
.foot-claim { font-family: var(--display); font-weight: 800; font-size: 1.5rem; color: #fff; margin: 0 0 .5rem; line-height: 1.15; letter-spacing: -.02em; }
.foot-desc { font-size: .92rem; margin: 0 0 .8rem; }
.foot-h { color: #fff !important; font-weight: 500; letter-spacing: .14em; margin-bottom: .7rem !important; }
.foot-contents ol { margin: 0; padding-left: 1.3rem; font-size: .84rem; line-height: 1.55; } .foot-contents li a { color: var(--dark-text); text-decoration: none; } .foot-contents li a:hover { color: #fff; text-decoration: underline; }
.foot-legal { margin-top: 1.8rem; border-top: 1px solid #27324a; padding-top: .9rem; } .foot-legal .mono { text-transform: none; letter-spacing: .02em; }

@media print { .masthead, .rail, .rail-left, .pager, button, .skip, .who, .sitefoot { display: none !important; } .layout { display: block; } body { background: #fff; color: #000; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }

/* publisher block in the footer (replaces the properties list; the list lives on /network/) */
.foot-pub .pub-name { font-family: var(--display, var(--serif, inherit)); font-weight: 700; font-size: 1.25rem; margin: 0 0 .3rem; }
.foot-pub .pub-nap { font-size: .9rem; line-height: 1.55; margin: 0 0 .6rem; }

/* The question this site answers (per-domain query block) */
.question { background: var(--paper-2); border: 1px solid var(--rule); border-left: 6px solid var(--accent); border-radius: 0 10px 10px 0; padding: 1.3rem 1.5rem 1.2rem; margin: 1.6rem 0 0; }
.question h2 { font-family: var(--display); font-size: 1.7rem; line-height: 1.15; margin: .3rem 0 .5rem; letter-spacing: -.01em; }
.q-label { color: var(--muted); margin: 0; }
.q-answer { font-size: 1.3rem; margin: 0 0 .6rem; }
.q-answer strong { color: var(--accent); }
.q-answer .mono { font-size: .8rem; color: var(--muted); }
.question p:last-child { margin: 0; max-width: var(--measure); }

/* long domain strings must not widen the rail */
.infobox td, .record td, .file-record dd, .reading dd, .demand dd, .money dd, .chan dd { overflow-wrap: anywhere; }