/* Welcome to Adulting.
   The world is a technical owner's manual: a graphite cover board, a lighter
   manual stock to read on, ink and one signal red, monospaced numbers and
   labels, hairline rules. See DESIGN.md before changing any of it. */

:root {
  /* The cover board. Never changes stock, light or dark. */
  --cover: #17191d;
  --cover-2: #22262c;
  --cover-ink: #f2f0ea;
  --cover-dim: #9aa3ad;
  --cover-signal: #ff8a7a;

  /* The manual stock, the only surface set for reading. */
  --stock: #f2f0ea;
  --stock-2: #e7e4da;
  --rule: #d3cfc2;
  --ink: #15181c;
  --dim: #5a6068;
  --signal: #b02a19;

  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --sheet: 60rem;
  --measure: 34rem;
  --pad: clamp(1.15rem, 5vw, 2.75rem);
}

/* The one place people read at length is in bed at night, so the stock turns
   to ink and the cover stays exactly where it is. The stock must stay a
   perceptible step above the cover or the whole two-stock idea collapses into
   one flat field: --stock sits 1.22:1 above --cover, --stock-2 another 1.28:1
   above that. Measure it, do not eyeball it. */
@media (prefers-color-scheme: dark) {
  :root {
    --stock: #232935;
    --stock-2: #313a4a;
    --rule: #3f4a5c;
    --ink: #eae7df;
    --dim: #a4acb6;
    --signal: #ff8a7a;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--cover);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

::selection { background: var(--signal); color: var(--stock); }

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--stock);
  color: var(--ink);
  padding: 0.6rem 1rem;
  z-index: 40;
}
.skip:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.boot,
.loading {
  font-family: var(--mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cover-dim);
  padding: 4rem var(--pad);
  text-align: center;
}
.loading { color: var(--dim); }

/* ======================================================================
   THE COVER AND CONTENTS
   ====================================================================== */

.manual {
  max-width: var(--sheet);
  margin: 0 auto;
  padding: 0 var(--pad) 0;
  background: var(--cover);
  color: var(--cover-ink);
}

/* The cover plate: part number, title, what it is. */
.plate {
  padding: clamp(1.5rem, 6vw, 3rem) 0 clamp(1.75rem, 6vw, 3rem);
  border-bottom: 2px solid var(--cover-signal);
}

.plate__meta,
.plate__kind {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cover-dim);
  margin: 0;
  font-variant-numeric: tabular-nums;
}
.plate__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.1rem;
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--cover-2);
}
.plate__meta .mode {
  color: var(--cover-signal);
}
.plate__meta .cat { margin-left: auto; }

.plate__title {
  font-size: clamp(2.9rem, 15vw, 6.5rem);
  line-height: 0.9;
  letter-spacing: -0.035em;
  font-weight: 800;
  text-transform: uppercase;
  margin: clamp(1.5rem, 5vw, 2.5rem) 0 0;
}
.plate__title span { display: block; }
.plate__title span:last-child { color: var(--cover-signal); }

.plate__kind {
  margin-top: 1.4rem;
  color: var(--cover-ink);
}

.plate__say {
  max-width: var(--measure);
  margin: 1.1rem 0 0;
  font-size: 1.0625rem;
  color: var(--cover-ink);
}
.plate__who {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cover-dim);
  margin: 1rem 0 0;
}

/* Pick up where you left off. A stamped strip, not a card. */
.resume {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-top: 1.6rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--cover-2);
  border-left: 3px solid var(--cover-signal);
  text-decoration: none;
  min-height: 44px;
}
.resume span {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cover-dim);
  flex: none;
}
.resume strong {
  font-weight: 600;
  font-size: 0.9375rem;
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  min-width: 0;
}
.resume strong b {
  font-family: var(--mono);
  color: var(--cover-signal);
  font-variant-numeric: tabular-nums;
}
.resume:hover { background: var(--cover-2); }

/* Contents ------------------------------------------------------------- */

.contents { padding: clamp(2rem, 7vw, 3.25rem) 0 0; }

.head {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cover-dim);
  margin: 0 0 1.25rem;
  font-weight: 400;
}

/* A part of the manual. The ordinal outranks nothing; the title carries it. */
.part {
  margin: 2.5rem 0 0;
  padding-top: 0.85rem;
  border-top: 2px solid var(--cover-ink);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3rem 0.9rem;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.part:first-child { margin-top: 0; }
.part__o {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cover-signal);
}

/* One row per section: plate number, title, passage. */
.rows { margin-top: 0.35rem; }

.row {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding: 0.8rem 0.5rem 0.8rem 0;
  border-bottom: 1px solid var(--cover-2);
  text-decoration: none;
  min-height: 44px;
}
.row:hover { background: var(--cover-2); }

.row__n {
  flex: none;
  width: 2.2rem;
  padding: 0.15rem 0;
  text-align: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  color: var(--cover-dim);
  border: 1px solid var(--cover-2);
  align-self: flex-start;
}
.row:hover .row__n,
.row.is-read .row__n {
  color: var(--cover-signal);
  border-color: var(--cover-signal);
}

.row__b { min-width: 0; }
.row__t {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.row__r {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  color: var(--cover-dim);
  font-variant-numeric: tabular-nums;
}

/* Notices and plates on the cover ---------------------------------------- */

.notice {
  margin-top: clamp(2.25rem, 7vw, 3.5rem);
}
.notice__body {
  max-width: var(--measure);
  border-left: 3px solid var(--cover-signal);
  padding-left: 1.1rem;
}
.notice__body p { margin: 0 0 0.9rem; }
.notice__body p:last-child { margin-bottom: 0; }
.notice__body strong { color: var(--cover-signal); }

.steps { margin-top: 0.25rem; }
.step {
  display: flex;
  gap: 0.9rem;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--cover-2);
}
.step__n {
  flex: none;
  width: 2.2rem;
  text-align: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--cover-signal);
  font-variant-numeric: tabular-nums;
  padding-top: 0.15rem;
}
.step h3 {
  margin: 0 0 0.2rem;
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: -0.005em;
}
.step p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--cover-dim);
  max-width: var(--measure);
}

/* The footnote under the rhythm: most weeks skip the research conversation. */
.rhythm-note {
  margin: 1rem 0 0;
  font-size: 0.875rem;
  color: var(--cover-dim);
  max-width: var(--measure);
}

.kit dl { margin: 0; }
.kit dl > div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--cover-2);
}
.kit dt {
  flex: none;
  width: 9rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.kit dd {
  margin: 0;
  flex: 1 1 14rem;
  font-size: 0.9375rem;
  color: var(--cover-dim);
}
.kit .is-leader dt { color: var(--cover-signal); }

/* The foot of the manual ------------------------------------------------- */

.colophon {
  margin-top: clamp(2.5rem, 8vw, 4rem);
  padding: 1.75rem 0 3.5rem;
  border-top: 2px solid var(--cover-signal);
}
.colophon__etch {
  font-family: var(--mono);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cover-ink);
  margin: 0;
}
.colophon__by {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cover-dim);
  margin: 1.5rem 0 0;
  font-variant-numeric: tabular-nums;
}

/* A full sentence, so it is set as one: no tracking, no capitals. */
.colophon__note {
  margin: 0.5rem 0 0;
  font-size: 0.8125rem;
  color: var(--cover-dim);
  max-width: var(--measure);
}

/* One view control, and it lives here. Nowhere else. */
.leadswitch {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
}
.leadswitch p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--cover-dim);
}
.leadswitch button {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cover-ink);
  background: none;
  border: 1px solid var(--cover-dim);
  padding: 0.7rem 1rem;
  min-height: 44px;
  cursor: pointer;
}
.leadswitch button:hover {
  border-color: var(--cover-signal);
  color: var(--cover-signal);
}

/* ======================================================================
   THE RAIL (only while reading a section)
   ====================================================================== */

/* [hidden] does nothing against a display rule, so say it here or the back
   arrow sits on top of the cover. */
.rail[hidden] { display: none; }

.rail {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem var(--pad) 0.35rem 0.35rem;
  background: var(--cover);
  border-bottom: 1px solid var(--cover-2);
  padding-top: max(0.35rem, env(safe-area-inset-top));
}
.rail__back {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: 0;
  color: var(--cover-ink);
  cursor: pointer;
}
.rail__where {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cover-dim);
  font-variant-numeric: tabular-nums;
}

/* ======================================================================
   A SECTION: the manual page
   ====================================================================== */

.page {
  background: var(--stock);
  color: var(--ink);
  min-height: 100vh;
}
.page__inner {
  max-width: var(--sheet);
  margin: 0 auto;
  padding: clamp(1.5rem, 6vw, 3rem) var(--pad) 3rem;
}

.pg__where {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal);
  margin: 0 0 0.85rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--rule);
  font-variant-numeric: tabular-nums;
}

.pg__title {
  font-size: clamp(1.9rem, 7vw, 3.1rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 800;
  margin: 0;
  max-width: 24ch;
}

/* The spec plate: the week's own facts, in the form a manual would print them. */
.spec {
  margin: clamp(1.5rem, 5vw, 2.25rem) 0 0;
  border-top: 1px solid var(--rule);
}
.spec > div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--rule);
}
.spec dt {
  flex: none;
  width: 8.5rem;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
  padding-top: 0.18rem;
}
.spec dd {
  margin: 0;
  flex: 1 1 16rem;
  max-width: var(--measure);
  font-size: 0.9375rem;
}
.spec .spec__ref {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  color: var(--signal);
  letter-spacing: 0.02em;
}
.spec .spec__q { font-weight: 600; }

/* Sheet tabs. A row that scrolls rather than wraps, and fades only when
   something is genuinely off the edge. */
.tabs {
  display: flex;
  gap: 0;
  margin: clamp(1.5rem, 5vw, 2.25rem) 0 0;
  overflow-x: auto;
  scrollbar-width: none;
  border-bottom: 2px solid var(--ink);
  position: relative;
}
.tabs::-webkit-scrollbar { display: none; }
.tabs.is-clipped {
  -webkit-mask-image: linear-gradient(to right, #000 88%, transparent 100%);
  mask-image: linear-gradient(to right, #000 88%, transparent 100%);
}
.tabs button {
  flex: none;
  min-height: 44px;
  padding: 0.75rem 0.95rem;
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dim);
  cursor: pointer;
  white-space: nowrap;
}
.tabs button:first-child { padding-left: 0; }
.tabs button:hover { color: var(--ink); }
.tabs button.is-on {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.sheet-note {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem 1.25rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--rule);
}
.sheet-note p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--dim);
  max-width: var(--measure);
}
.print {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal);
  text-decoration: none;
  border: 1px solid var(--signal);
  padding: 0.55rem 0.7rem;
  min-height: 40px;
}
.print:hover { background: var(--signal); color: var(--stock); }

/* Contents of one sheet, recovered from its own section marks. */
.toc {
  margin: 1.25rem 0 0;
  border: 1px solid var(--rule);
}
.toc summary {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  padding: 0.85rem 0.9rem;
  cursor: pointer;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.toc ol {
  margin: 0;
  padding: 0 0.9rem 0.9rem 2.6rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
}
.toc li { margin: 0.35rem 0; }
.toc a { color: var(--ink); text-decoration: none; }
.toc a:hover { color: var(--signal); }

/* ======================================================================
   THE DOCUMENT ITSELF
   Everything below styles what refine.js recovers from the Word files.
   ====================================================================== */

.doc {
  margin-top: clamp(1.75rem, 5vw, 2.5rem);
  max-width: var(--measure);
}
.doc p { margin: 0 0 1rem; }
.doc strong { font-weight: 700; }

/* A section mark outranks the sub-heading under it, visibly. Size is the only
   thing carrying rank, and the marks are what a reader scans for. */
.doc h2.mark {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 2.75rem 0 1rem;
  padding-top: 0.85rem;
  border-top: 2px solid var(--ink);
}
.doc h2.mark:first-child { margin-top: 0; }

.doc h3.sub {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--signal);
  margin: 2rem 0 0.65rem;
}
/* The kicker and the line after it are two separate spans with nothing between
   them, so the space has to come from here. */
.doc .sub__k {
  color: var(--signal);
  margin-right: 0.7rem;
}
.doc .sub__r {
  color: var(--dim);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.doc p.cue {
  font-size: 0.875rem;
  color: var(--dim);
  margin-bottom: 0.85rem;
}
.doc p.lead { margin-bottom: 0.6rem; }
.doc p.ask {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0.35rem 0 0.6rem;
}

/* Plates. Every callout in the documents is a one-cell table; refine.js turns
   them into these. */
.doc .box {
  background: var(--stock-2);
  padding: 0.95rem 1.05rem;
  margin: 0 0 1rem;
  border-left: 3px solid var(--rule);
}
.doc .box > :last-child { margin-bottom: 0; }
.doc .box--prompt { border-left-color: var(--signal); }
.doc .box--note { border-left-color: var(--ink); }
.doc .box--scripture {
  border-left-color: var(--signal);
  background: none;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--signal);
}
.doc .box--day { border-left-color: var(--ink); }

.doc .box__kicker {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
  margin: 0 0 0.4rem;
}
.doc .box__ref {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--dim);
  font-variant-numeric: tabular-nums;
  margin: 0 0 0.5rem;
}
.doc .box__day {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3rem 0.7rem;
  margin: 0 0 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule);
}
.doc .box__dayTitle {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal);
}
.doc .box__dayRef {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--dim);
  font-variant-numeric: tabular-nums;
}

/* Printed Scripture. Verse numbers are always tabular and never inline noise. */
.doc p.v { margin: 0 0 0.55rem; }
.doc .v__n {
  font-family: var(--mono);
  font-size: 0.6875rem;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
  margin-right: 0.45rem;
  vertical-align: 0.15em;
}

/* Numbered questions: the number sits in its own gutter. */
.doc p.q {
  display: flex;
  gap: 0.75rem;
  margin: 0 0 0.9rem;
  font-size: 1rem;
}
.doc .q__n {
  flex: none;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
  padding-top: 0.18rem;
  min-width: 1.4rem;
}

/* Leader-only insight and follow-up prompts. */
.doc .aside {
  border-left: 1px dashed var(--dim);
  padding: 0.1rem 0 0.1rem 0.9rem;
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  color: var(--dim);
}
.doc .aside__k {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  margin-right: 0.4rem;
}

/* Checklists: a real box to tick, not a bullet. */
.doc ul.checks,
.doc ul.bullets,
.doc ul.fills {
  list-style: none;
  margin: 0;
  padding: 0;
}
.doc li.check {
  position: relative;
  padding-left: 1.7rem;
  margin: 0 0 0.6rem;
}
.doc li.check::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 0.75rem;
  height: 0.75rem;
  border: 1px solid var(--dim);
}
.doc li.bullet,
.doc ul.bullets li {
  position: relative;
  padding-left: 1.7rem;
  margin: 0 0 0.6rem;
}
.doc ul.bullets li::before {
  content: "";
  position: absolute;
  left: 0.15rem;
  top: 0.62em;
  width: 0.45rem;
  height: 0.45rem;
  background: var(--signal);
}

/* Labelled options ("THIS OR THAT: ..."), one ruled row each. */
.doc li.opt,
.doc .opt {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--rule);
  margin: 0;
  list-style: none;
}
.doc .opt__k {
  display: block;
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: 0.2rem;
}

/* Fill-in-the-blanks and the ruled lines people write on. */
.doc li.fill,
.doc .fill {
  position: relative;
  padding-left: 1.7rem;
  margin: 0 0 0.7rem;
  list-style: none;
}
.doc li.fill::before,
.doc .fill::before {
  content: "\25B8";
  position: absolute;
  left: 0.1rem;
  top: 0;
  color: var(--signal);
  font-size: 0.85em;
}
.doc .blank {
  display: inline-block;
  min-width: 6rem;
  border-bottom: 1px solid var(--dim);
  vertical-align: baseline;
}
/* Word's ruled write-on lines do not survive conversion, so refine.js puts one
   back wherever a prompt asks for an answer and nothing followable came next. */
.doc .writein {
  height: 1.6rem;
  border-bottom: 1px solid var(--rule);
  margin: 0 0 1rem;
}

/* A genuinely wide table from a document scrolls inside its own frame; the page
   body never scrolls sideways. */
.table-scroll {
  overflow-x: auto;
  margin: 0 0 1rem;
  border: 1px solid var(--rule);
}
.doc table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9375rem;
}
.doc th,
.doc td {
  text-align: left;
  padding: 0.6rem 0.7rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

.failed {
  border-left: 3px solid var(--signal);
  padding-left: 1rem;
  color: var(--dim);
}
.failed span { display: block; font-size: 0.9375rem; margin-top: 0.35rem; }

/* ======================================================================
   ONWARD
   ====================================================================== */

.onward {
  background: var(--cover);
  color: var(--cover-ink);
  padding: clamp(1.75rem, 6vw, 2.75rem) var(--pad) 3.5rem;
}
.onward > div {
  max-width: var(--sheet);
  margin: 0 auto;
}
.onward a {
  display: block;
  text-decoration: none;
  padding: 1rem 0;
  border-top: 1px solid var(--cover-2);
}
.onward a:first-child { border-top: 2px solid var(--cover-signal); }
.onward__k {
  display: block;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cover-dim);
}
.onward__t {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-top: 0.3rem;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.onward__t b {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 0.8125rem;
  color: var(--cover-signal);
  font-variant-numeric: tabular-nums;
}
.onward__d {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.9375rem;
  color: var(--cover-dim);
  max-width: var(--measure);
}

/* ======================================================================
   MOTION
   One authored moment: the page is pulled out of the manual. Transform and
   opacity only. Three rules, each of which was a real bug first:
   1. Never animate clip-path, filter or mask on .page; a sheet runs past
      10,000px and the browser stops repainting below the first screen.
   2. Never animate letter-spacing on the title; it relayouts the largest text
      on the page every frame, on the old phones this is built for.
   3. The moment is gated on .is-opening, set only when the section changes, so
      tabbing between sheets never re-animates what you are already reading.
   ====================================================================== */

@keyframes pull {
  from { transform: translate3d(0, 14px, 0); opacity: 0; }
  to { transform: none; opacity: 1; }
}
@keyframes draw {
  from { transform: scaleX(0); }
  to { transform: none; }
}

.page.is-opening .page__inner { animation: pull 0.34s cubic-bezier(0.2, 0.7, 0.3, 1) both; }
.page.is-opening .pg__where {
  animation: draw 0.4s cubic-bezier(0.2, 0.7, 0.3, 1) both;
  transform-origin: left center;
}
.page.is-opening .pg__title { animation: pull 0.42s 0.05s cubic-bezier(0.2, 0.7, 0.3, 1) both; }

@media (prefers-reduced-motion: reduce) {
  .page.is-opening .page__inner,
  .page.is-opening .pg__where,
  .page.is-opening .pg__title { animation: none; }
}

/* ======================================================================
   NARROW
   ====================================================================== */

@media (max-width: 34rem) {
  body { font-size: 16px; }
  .spec dt { width: 100%; }
  .kit dt { width: 100%; }
  .plate__meta .cat { margin-left: 0; }
}

/* ======================================================================
   PRINT
   The PDF is the real print artefact; this only keeps a page readable if
   somebody prints the screen anyway.
   ====================================================================== */

@media print {
  body { background: #fff; color: #000; }
  .rail, .tabs, .print, .onward, .toc, .leadswitch { display: none !important; }
  .page, .page__inner, .manual { background: #fff; color: #000; max-width: none; padding: 0; }
  .doc { max-width: none; }
  .doc .box { background: none; border-left: 2px solid #000; }
}