/* Digital Maintenance Tracker landing — "Hoolduspäevik": a service logbook on salmon ledger paper.
   Plain CSS, no build step, no client-side JavaScript. */

@font-face {
  font-family: "Bricolage Grotesque";
  src: url("/assets/fonts/BricolageGrotesque_800ExtraBold.ttf") format("truetype");
  font-weight: 800;
  font-display: swap;
}
@font-face {
  font-family: "Bricolage Grotesque";
  src: url("/assets/fonts/BricolageGrotesque_600SemiBold.ttf") format("truetype");
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("/assets/fonts/InstrumentSans_400Regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("/assets/fonts/InstrumentSans_500Medium.ttf") format("truetype");
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("/assets/fonts/InstrumentSans_600SemiBold.ttf") format("truetype");
  font-weight: 600;
  font-display: swap;
}

:root {
  --paper: #f6d9c7;
  --paper-deep: #edc6af;
  --sheet: #fff6ee;
  --ink: #1d1916;
  --ink-soft: #66503f;
  --spruce: #0d5c46;
  --vermilion: #b92b17;
  --ochre: #8a5600;
  --rule: #ddb198;
  --on-ink-red: #f39a85;
  --on-ink-green: #8fd0b8;
  --display: "Bricolage Grotesque", "Arial Black", "Segoe UI", sans-serif;
  --text: "Instrument Sans", "Segoe UI", Arial, sans-serif;
  --spine: 264px;
  --gutter: clamp(16px, 4.4vw, 56px);
  --perforation: 1px dashed var(--rule);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--text);
  font-size: 1.0625rem;
  line-height: 1.55;
  overflow-wrap: break-word;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

h1,
h2,
h3,
p,
ul,
ol,
dl,
dd,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--spruce);
}

:focus-visible {
  outline: 3px solid var(--spruce);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 20;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--sheet);
  font-weight: 600;
  border-radius: 999px;
}

.skip:focus {
  top: 12px;
  color: var(--sheet);
}

/* ---------- Book: spine + leaf ---------- */

.book {
  display: block;
}

.leaf {
  min-width: 0;
}

.spine {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  padding: 14px var(--gutter) 0;
  border-bottom: 2px solid var(--ink);
  background: var(--paper);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  min-width: 0;
}

.brand:hover {
  color: inherit;
}

.brand__mark {
  width: 40px;
  height: 40px;
  flex: none;
  background: var(--sheet);
  border: 2px solid var(--ink);
  border-radius: 8px;
  padding: 3px;
}

.brand__text {
  display: grid;
  line-height: 1.15;
}

.brand__kicker {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.brand__name {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
}

.spine__label,
.toc,
.spine__foot {
  display: none;
}

.pages {
  flex: 1 0 100%;
  margin: 0 calc(var(--gutter) * -1);
  padding: 0 var(--gutter);
  border-top: var(--perforation);
}

.pages ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0 4px;
  margin-left: -10px;
}

.pages a {
  display: block;
  padding: 12px 10px;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border-bottom: 4px solid transparent;
}

.pages a[aria-current="page"] {
  border-bottom-color: var(--ink);
}

/* ---------- Shared pieces ---------- */

.kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.kicker::before {
  content: "";
  width: 28px;
  height: 5px;
  background: var(--ink);
  flex: none;
}

h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.04;
  text-wrap: balance;
}

h2 {
  font-size: clamp(1.75rem, 1.2rem + 2.4vw, 3rem);
}

h3 {
  font-size: 1.3125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

/* Rubber stamp: double outline, upper case, slightly turned. */
.stamp {
  display: inline-block;
  flex: none;
  max-width: 100%;
  padding: 0.3em 0.75em 0.26em;
  border: 2px solid currentColor;
  border-radius: 4px;
  outline: 2px solid currentColor;
  outline-offset: 2px;
  font-family: var(--text);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  line-height: 1.3;
  text-transform: uppercase;
  white-space: nowrap;
  transform: rotate(-4deg);
  color: var(--spruce);
}

.stamp--soon {
  color: var(--ochre);
}

.stamp--late {
  color: var(--vermilion);
}

.stamp--big {
  font-size: clamp(0.875rem, 0.7rem + 0.9vw, 1.25rem);
  border-width: 3px;
  outline-width: 3px;
  outline-offset: 3px;
}

.counter {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* The caption strip above a screen: counter on the left, stamp on the right. The stamp lives here
   and never touches the screen below. */
.shot__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 44px;
  padding: 0 6px 12px 0;
}

/* A real screen in a thick ink frame with a hard, flat shadow. */
.frame {
  border: 6px solid var(--ink);
  border-radius: 18px;
  background: var(--paper);
  box-shadow: 12px 12px 0 var(--paper-deep);
  overflow: hidden;
}

.frame img {
  width: 100%;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 26px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--sheet);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
}

a.cta:hover {
  background: var(--spruce);
  border-color: var(--spruce);
  color: var(--sheet);
}

.cta--pending {
  background: transparent;
  color: var(--ink);
  border-style: dashed;
  cursor: default;
}

.cta--compact {
  min-height: 44px;
  padding: 8px 16px;
  font-size: 0.875rem;
  width: 100%;
}

.ticks {
  display: grid;
  gap: 8px;
}

.ticks li {
  position: relative;
  padding-left: 30px;
}

.ticks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.38em;
  width: 14px;
  height: 7px;
  border-left: 3px solid var(--spruce);
  border-bottom: 3px solid var(--spruce);
  transform: rotate(-45deg);
}

/* ---------- Hero ---------- */

.hero {
  display: grid;
  gap: 40px;
  padding: clamp(28px, 6vw, 72px) var(--gutter) clamp(48px, 7vw, 88px);
}

.hero h1 {
  margin-top: 18px;
  font-size: clamp(2.5rem, 1rem + 6.6vw, 4.75rem);
  line-height: 0.98;
}

.hero h1 span {
  display: block;
}

.hero__last {
  color: var(--spruce);
}

.hero__lede {
  margin-top: 24px;
  max-width: 34rem;
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem);
}

.hero__honest {
  margin-top: 18px;
  max-width: 34rem;
  padding: 12px 0 12px 16px;
  border-left: 5px solid var(--ink);
  font-weight: 600;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 28px;
}

.hero__platform {
  font-size: 0.9375rem;
  color: var(--ink-soft);
}

.hero__pending {
  margin-top: 12px;
  max-width: 30rem;
  font-size: 0.9375rem;
  color: var(--ink-soft);
}

.hero .ticks {
  margin-top: 28px;
  padding-top: 20px;
  border-top: var(--perforation);
  max-width: 34rem;
  font-weight: 500;
}

.hero__shot {
  width: 100%;
  max-width: 440px;
  padding-right: 12px;
}

.hero__shot figcaption {
  margin-top: 26px;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

/* ---------- Bands ---------- */

.band {
  padding: clamp(48px, 7vw, 88px) var(--gutter);
  border-top: 2px solid var(--ink);
}

.band__head {
  display: grid;
  gap: 14px;
  max-width: 46rem;
}

.band__head > p:not(.kicker) {
  max-width: 38rem;
  color: var(--ink-soft);
  font-size: 1.0625rem;
}

/* Stamps legend */
.stamps__grid {
  display: grid;
  margin-top: 36px;
  border-top: var(--perforation);
}

.stamps__grid li {
  display: grid;
  gap: 16px;
  justify-items: start;
  align-content: start;
  padding: 26px 0 22px 6px;
  border-bottom: var(--perforation);
}

.stamps__grid li:nth-child(even) .stamp {
  transform: rotate(3deg);
}

.stamps__grid .stamp {
  font-size: 0.9375rem;
}

.stamps__grid p {
  max-width: 30rem;
}

/* Who does what */
.manual__quote {
  margin-top: 32px;
  max-width: 52rem;
}

.manual__quote blockquote {
  padding-left: 18px;
  border-left: 6px solid var(--vermilion);
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.25rem, 1rem + 1.3vw, 1.875rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.manual__quote figcaption {
  margin-top: 12px;
  padding-left: 24px;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.ledger {
  margin-top: 36px;
  background: var(--sheet);
  border: 1px solid var(--rule);
  border-radius: 8px;
  overflow: hidden;
}

.ledger__row {
  display: grid;
  gap: 10px;
  padding: 18px 16px;
  border-top: var(--perforation);
}

.ledger__row--head {
  display: none;
}

.ledger__row:nth-child(2) {
  border-top: 0;
}

.ledger__no {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--ink-soft);
}

.ledger__who {
  display: block;
  margin-bottom: 2px;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.ledger__row p:last-child .ledger__who {
  color: var(--spruce);
}

/* Poster wall */
.sheets__wall {
  display: grid;
  gap: 24px;
  margin-top: 40px;
}

.poster {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 22px 20px 0;
  background: var(--sheet);
  border: 1px solid var(--rule);
  border-radius: 8px;
  overflow: hidden;
}

.poster h3 {
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.06;
  margin-top: 6px;
}

.poster > p {
  margin-top: 14px;
  max-width: 34rem;
}

.poster__note {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--spruce);
}

.poster__shot {
  margin-top: auto;
  padding: 28px 12px 0 0;
  max-height: 480px;
  overflow: hidden;
}

.poster__shot .frame {
  border-bottom: 0;
  border-radius: 18px 18px 0 0;
  max-width: 420px;
  margin: 0 auto;
}

.poster--ink {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
  padding-bottom: 26px;
}

.poster--ink .counter {
  color: var(--paper-deep);
}

.poster--ink .stamp {
  color: var(--paper);
}

.poster__list {
  margin-top: 20px;
  border-top: 1px dashed #6b5a4e;
}

.poster__list li {
  padding: 16px 0;
  border-bottom: 1px dashed #6b5a4e;
}

/* No passwords */
.secrets {
  display: grid;
  gap: 40px;
  padding: clamp(48px, 7vw, 88px) var(--gutter);
  background: var(--ink);
  color: var(--paper);
}

.secrets .kicker {
  color: var(--paper-deep);
}

.secrets .kicker::before {
  background: var(--on-ink-red);
}

.secrets h2 {
  margin-top: 14px;
}

.secrets__body {
  margin-top: 20px;
  max-width: 34rem;
  font-size: 1.125rem;
}

.secrets__quote {
  margin-top: 28px;
  max-width: 34rem;
  padding-top: 18px;
  border-top: 1px dashed #6b5a4e;
}

.secrets__quote figcaption {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-deep);
}

.secrets__quote blockquote {
  margin-top: 8px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.25rem;
  line-height: 1.25;
  color: var(--sheet);
}

.frame--paper {
  border-color: var(--paper);
  border-radius: 12px;
  box-shadow: 10px 10px 0 #3a312b;
  max-width: 460px;
}

.secrets__side h3 {
  margin-top: 44px;
}

.struck {
  margin-top: 16px;
  border-top: 1px dashed #6b5a4e;
}

.struck li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px dashed #6b5a4e;
}

.struck s {
  justify-self: start;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: 0.01em;
  text-decoration-color: var(--on-ink-red);
  text-decoration-thickness: 2px;
}

/* Export */
.export__cols {
  display: grid;
  gap: 32px;
  margin-top: 36px;
}

.reports {
  border-top: 2px solid var(--ink);
}

.reports li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding: 18px 0;
  border-bottom: var(--perforation);
}

.reports li > div {
  flex: 1 1 16rem;
  min-width: 0;
}

.reports p {
  margin-top: 4px;
  color: var(--ink-soft);
}

.formats {
  display: flex;
  gap: 8px;
}

.formats span {
  padding: 4px 12px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.backup {
  padding: 22px 20px;
  background: var(--sheet);
  border: 1px solid var(--rule);
  border-radius: 8px;
  align-self: start;
}

.backup dt {
  margin-top: 16px;
  padding-top: 14px;
  border-top: var(--perforation);
  font-weight: 600;
}

.backup dd {
  margin-top: 2px;
  color: var(--ink-soft);
}

/* Questions */
.faq__list {
  margin-top: 32px;
  border-top: 2px solid var(--ink);
  max-width: 52rem;
}

.faq__list details {
  border-bottom: var(--perforation);
}

.faq__list summary {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 18px 40px 18px 0;
  position: relative;
  cursor: pointer;
  list-style: none;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.1875rem;
  line-height: 1.2;
}

.faq__list summary::-webkit-details-marker {
  display: none;
}

.faq__list summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 12px;
  font-family: var(--text);
  font-weight: 500;
  font-size: 1.625rem;
}

.faq__list details[open] summary::after {
  content: "–";
}

.faq__no {
  flex: none;
  font-family: var(--text);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

.faq__list details p {
  padding: 0 0 22px 36px;
  max-width: 44rem;
}

/* Download */
.download {
  display: grid;
  gap: 36px;
  margin: 0 var(--gutter) clamp(48px, 7vw, 88px);
  padding: clamp(28px, 5vw, 56px);
  background: var(--sheet);
  border: 6px solid var(--ink);
  border-radius: 18px;
  box-shadow: 12px 12px 0 var(--paper-deep);
}

.download h2 {
  margin-top: 14px;
}

.download__text > p:not(.kicker) {
  margin-top: 16px;
  max-width: 32rem;
}

.download__mark {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-right: 8px;
}

.download__mark img {
  width: clamp(88px, 18vw, 160px);
}

/* ---------- Colophon ---------- */

.colophon {
  display: grid;
  gap: 20px;
  padding: 36px var(--gutter) 48px;
  border-top: 2px solid var(--ink);
  font-size: 0.9375rem;
}

.colophon__brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.colophon__honest {
  max-width: 36rem;
  font-weight: 600;
}

.colophon__links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 22px;
}

.colophon__links a {
  display: inline-block;
  padding: 10px 0;
  font-weight: 600;
}

.colophon__links span {
  color: var(--ink-soft);
}

.colophon__sample {
  max-width: 40rem;
  color: var(--ink-soft);
  font-size: 0.875rem;
}

/* ---------- Document pages: privacy, support, changelog, 404 ---------- */

.doc {
  padding: clamp(28px, 6vw, 72px) var(--gutter) clamp(48px, 7vw, 88px);
  max-width: 62rem;
}

.pagehead {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px 32px;
  padding-bottom: 28px;
  border-bottom: 2px solid var(--ink);
}

.pagehead h1 {
  margin-top: 16px;
  font-size: clamp(1.875rem, 0.6rem + 5.6vw, 4.25rem);
}

.pagehead .stamp {
  margin: 0 10px 10px 6px;
}

.doc__scope {
  margin-top: 24px;
  font-size: 0.9375rem;
  color: var(--ink-soft);
}

.doc__summary {
  margin-top: 20px;
  max-width: 44rem;
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.25rem, 1rem + 1vw, 1.625rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.doc h2 {
  font-size: clamp(1.375rem, 1.2rem + 0.8vw, 1.75rem);
  line-height: 1.12;
}

.doc__toc {
  margin-top: 32px;
  padding: 18px 20px;
  background: var(--sheet);
  border: 1px solid var(--rule);
  border-radius: 8px;
  max-width: 44rem;
}

.doc__toc ol {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 0 24px;
  counter-reset: toc;
}

.doc__toc li {
  counter-increment: toc;
}

.doc__toc a {
  display: flex;
  gap: 12px;
  padding: 9px 0;
  font-weight: 500;
  text-decoration: none;
  border-bottom: var(--perforation);
}

.doc__toc a::before {
  content: counter(toc, decimal-leading-zero);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  padding-top: 0.25em;
}

.clause {
  display: grid;
  gap: 6px;
  margin-top: 36px;
  padding-top: 26px;
  border-top: var(--perforation);
  max-width: 48rem;
  scroll-margin-top: 16px;
}

.clause__no {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--ink-soft);
}

.clause p,
.clause ul {
  margin-top: 12px;
}

.clause ul {
  display: grid;
  gap: 10px;
}

.clause li {
  position: relative;
  padding-left: 22px;
}

.clause li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 10px;
  height: 4px;
  background: var(--ink);
}

.mailslip {
  display: grid;
  gap: 4px;
  margin-top: 32px;
  padding: 22px 24px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 8px;
  max-width: 44rem;
}

.mailslip span {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper-deep);
}

.mailslip a {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.125rem, 0.6rem + 2.6vw, 2rem);
  line-height: 1.15;
  color: var(--sheet);
  overflow-wrap: anywhere;
}

.mailslip a:hover {
  color: var(--on-ink-green);
}

.doc__pair {
  display: grid;
  gap: 36px;
  margin-top: 44px;
}

.doc__steps {
  display: grid;
  gap: 12px;
  margin-top: 16px;
  counter-reset: step;
}

.doc__steps li {
  counter-increment: step;
  position: relative;
  padding-left: 42px;
}

.doc__steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1em;
  font-family: var(--display);
  font-weight: 800;
  color: var(--ink-soft);
}

.doc__warning {
  margin-top: 18px;
  padding: 10px 0 10px 14px;
  border-left: 5px solid var(--vermilion);
  font-weight: 600;
}

.ticks--plain {
  margin-top: 16px;
}

.doc__how {
  margin-top: 52px;
}

.doc__how .faq__list {
  margin-top: 20px;
}

.doc__next {
  margin-top: 40px;
  font-weight: 500;
}

.release {
  margin-top: 36px;
  padding: 26px 22px;
  background: var(--sheet);
  border: 1px solid var(--rule);
  border-radius: 8px;
  max-width: 48rem;
}

.release header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 22px;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: var(--perforation);
}

.release__version {
  padding: 6px 16px;
  background: var(--ink);
  color: var(--sheet);
  border-radius: 6px;
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.5rem;
}

.release__status {
  margin-top: 4px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ochre);
}

.doc > .hero__cta {
  margin-top: 36px;
}

.page-notFound .doc > p:last-child {
  margin-top: 28px;
}

/* ---------- From tablet up ---------- */

@media (min-width: 720px) {
  .stamps__grid {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 40px;
  }

  .ledger__row {
    grid-template-columns: 48px 1fr 1fr;
    gap: 24px;
    padding: 18px 24px;
  }

  .ledger__row--head {
    display: grid;
    background: var(--ink);
    color: var(--sheet);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    padding-top: 12px;
    padding-bottom: 12px;
    border-top: 0;
  }

  .ledger__who {
    display: none;
  }

  .doc__pair {
    grid-template-columns: 3fr 2fr;
    gap: 48px;
  }

  .clause {
    grid-template-columns: 56px 1fr;
    gap: 0 12px;
  }

  .clause__no {
    padding-top: 0.2em;
  }

  .colophon {
    grid-template-columns: 1fr 1fr;
    gap: 20px 48px;
  }

  .poster {
    padding: 26px 28px 0;
  }

  .poster--ink {
    padding-bottom: 30px;
  }
}

@media (min-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .hero__shot {
    justify-self: end;
    margin-top: 6px;
  }

  .sheets__wall {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 28px;
  }

  /* Rows alternate between a 7/5 and a 5/7 split. */
  .poster {
    grid-column: span 7;
  }

  .poster:nth-child(4n + 2),
  .poster:nth-child(4n + 3) {
    grid-column: span 5;
  }

  .secrets {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 64px;
    align-items: start;
  }

  .export__cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
  }

  .faq {
    display: grid;
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 48px;
    align-items: start;
  }

  .faq .faq__list {
    margin-top: 6px;
  }

  .download {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .download__mark {
    flex-direction: column;
    gap: 28px;
    padding: 0 24px 12px;
  }

  .stamps__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- Desktop: the spine becomes a fixed table of contents ---------- */

@media (min-width: 1100px) {
  .book {
    display: grid;
    grid-template-columns: var(--spine) minmax(0, 1fr);
    max-width: 1560px;
    margin: 0 auto;
  }

  .spine {
    position: sticky;
    top: 0;
    align-self: start;
    height: 100vh;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 0;
    padding: 28px 24px 24px;
    border-bottom: 0;
    overflow-y: auto;
  }

  .brand {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding-bottom: 22px;
    border-bottom: 2px solid var(--ink);
  }

  .brand__mark {
    width: 56px;
    height: 56px;
    border-radius: 10px;
    padding: 4px;
  }

  .brand__name {
    font-size: 1.375rem;
    line-height: 1.05;
    margin-top: 4px;
  }

  .spine__label {
    display: block;
    margin: 22px 0 6px;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ink-soft);
  }

  .toc {
    display: block;
  }

  .toc a {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 7px 0;
    border-bottom: var(--perforation);
    font-weight: 500;
    font-size: 0.9375rem;
    text-decoration: none;
  }

  .toc__no {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--ink-soft);
  }

  .pages {
    flex: none;
    margin: 0;
    padding: 0;
    border-top: 0;
  }

  .pages ul {
    display: block;
    margin: 0;
  }

  .pages a {
    padding: 7px 0;
    border-bottom: var(--perforation);
  }

  .pages a[aria-current="page"] {
    border-bottom: var(--perforation);
    box-shadow: inset 5px 0 0 var(--ink);
    padding-left: 16px;
  }

  .spine__foot {
    display: grid;
    gap: 10px;
    margin-top: auto;
    padding-top: 24px;
  }

  .spine__version {
    font-size: 0.8125rem;
    color: var(--ink-soft);
    text-align: center;
  }

  /* The rule between spine and leaf belongs to the leaf, so it runs the full height of the page. */
  .leaf {
    border-left: 2px solid var(--ink);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media print {
  .spine,
  .cta {
    display: none;
  }
}