/* A drawing-sheet palette. No remote fonts, UI framework or icon library. */
:root {
  --paper: #f6f4ee;
  --ink: #0f172a;
  --muted: #596272;
  --line: #d8d7d0;
  --copper: #b75b22;
  --blue: #eaf2f5;
  --sans: Arial, Helvetica, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 28px;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
:focus-visible {
  outline: 3px solid var(--copper);
  outline-offset: 6px;
}
::selection {
  background: #ebc3a7;
  color: var(--ink);
}
.wrap {
  width: min(1320px, calc(100% - 112px));
  margin-inline: auto;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  padding: 0;
  background: var(--ink);
  color: white;
  z-index: 10;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}
.skip-link:focus {
  width: auto;
  height: auto;
  padding: 14px;
  overflow: visible;
  clip-path: none;
}
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 31px;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: block;
  width: 164px;
  flex-shrink: 0;
}
.masthead nav {
  display: flex;
  align-items: center;
  gap: 36px;
  font-size: 13px;
}
.masthead nav a {
  padding-block: 12px;
}
.masthead nav a:hover,
.text-link:hover {
  color: var(--copper);
}
.nav-contact span {
  margin-left: 12px;
}
.eyebrow,
.drawing-note,
.note-index,
.print-label,
.sheet-coordinate,
.tour-counter {
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.7px;
  text-transform: uppercase;
  line-height: 1.6;
}
.eyebrow {
  margin: 0 0 27px;
  color: var(--muted);
}
.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--copper);
  margin-right: 8px;
}
.hero {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 48px;
  padding-top: 76px;
  padding-bottom: 92px;
  align-items: center;
  min-height: 720px;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(56px, 5.5vw, 88px);
  letter-spacing: -4px;
  line-height: 1.03;
  margin-bottom: 28px;
}
h1 em,
h2 em {
  font-weight: 400;
  color: var(--copper);
}
.hero-description {
  font-size: 20px;
  line-height: 1.5;
  margin-bottom: 18px;
  letter-spacing: -0.4px;
}
.hero-explanation {
  font-size: 15px;
  line-height: 1.8;
  max-width: 385px;
  color: var(--muted);
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 23px;
  flex-wrap: wrap;
  margin-top: 30px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 17px 19px;
  background: var(--ink);
  color: var(--paper);
  font-size: 13px;
  border-radius: 2px;
  transition:
    background 0.2s,
    transform 0.2s;
}
.button:hover {
  background: #28364e;
  transform: translateY(-2px);
}
.text-link {
  font-size: 12px;
  border-bottom: 1px solid var(--line);
  padding-block: 8px;
}
.text-link span {
  margin-left: 7px;
}
.platforms {
  font-size: 11px;
  color: var(--muted);
  margin: 24px 0 0;
}
.hero-drawing {
  position: relative;
  margin: 0;
  padding: 42px 24px 56px;
  background-color: #eeeae0;
  background-image:
    linear-gradient(#0f172a08 1px, transparent 1px),
    linear-gradient(90deg, #0f172a08 1px, transparent 1px);
  background-size: 24px 24px;
  transform: rotate(-1.5deg);
  box-shadow: 0 18px 35px -30px #0f172a55;
  border: 1px solid #dedbd3;
}
.hero-drawing::before,
.hero-drawing::after {
  content: "";
  position: absolute;
  width: 13px;
  height: 13px;
  border: 1px solid var(--copper);
  z-index: 1;
  pointer-events: none;
}
.hero-drawing::before {
  top: 13px;
  left: 13px;
  border-right: 0;
  border-bottom: 0;
}
.hero-drawing::after {
  bottom: 13px;
  right: 13px;
  border-left: 0;
  border-top: 0;
}
.drawing-note {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.drawing-note span {
  color: var(--ink);
  white-space: nowrap;
}
.drawing-frame {
  background: #fff;
  border: 1px solid #c6ccc9;
  box-shadow: 0 5px 12px #0f172a09;
}
.drawing-caption {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 18px;
  align-items: center;
  margin-top: 25px;
}
.dimension-rule {
  height: 1px;
  background: var(--copper);
  position: relative;
}
.dimension-rule::before,
.dimension-rule::after {
  content: "";
  height: 9px;
  width: 1px;
  position: absolute;
  top: -4px;
  background: var(--copper);
}
.dimension-rule::after {
  right: 0;
}
.drawing-caption > span:nth-child(2) {
  font-family: var(--serif);
  font-size: 29px;
  color: var(--copper);
  white-space: nowrap;
}
.drawing-caption > span:last-child {
  font-size: 10px;
  line-height: 1.6;
  color: var(--muted);
}
.sheet-coordinate {
  position: absolute;
  right: 20px;
  bottom: 13px;
  font-size: 9px;
  color: #848879;
}
.intro {
  border-top: 1px solid var(--line);
  padding-block: 62px 74px;
  display: grid;
  grid-template-columns: 1fr 2fr 1.45fr;
  gap: 34px;
  align-items: start;
}
.intro .eyebrow {
  margin-top: 8px;
}
h2 {
  font-family: var(--serif);
  font-size: clamp(32px, 3.4vw, 52px);
  font-weight: 400;
  line-height: 1.13;
  letter-spacing: -1.7px;
  margin-bottom: 22px;
}
.intro h2 {
  font-size: 37px;
  margin-bottom: 0;
}
.intro > p:last-child {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  margin-bottom: 0;
}
.tour {
  padding-bottom: 108px;
}
.section-heading {
  position: relative;
  border-top: 1px solid var(--line);
  padding-top: 48px;
  margin-bottom: 42px;
}
.section-heading .eyebrow {
  margin-bottom: 19px;
}
.tour-hint {
  position: absolute;
  right: 0;
  bottom: 7px;
  font-size: 12px;
  color: var(--muted);
}
.tour-hint span {
  padding-left: 18px;
}
.tour-layout {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 48px;
  align-items: center;
}
.tour-step {
  display: grid;
  grid-template-columns: 22px 1fr 16px;
  gap: 14px;
  width: 100%;
  text-align: left;
  padding: 22px 12px;
  background: transparent;
  border: 0;
  border-top: 1px solid var(--line);
  transition: background 0.2s;
}
.tour-step:last-child {
  border-bottom: 1px solid var(--line);
}
.step-number {
  font-size: 10px;
  color: var(--muted);
  padding-top: 3px;
  font-variant-numeric: tabular-nums;
}
.tour-step strong {
  display: block;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.45;
}
.step-description {
  display: block;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  margin-top: 8px;
}
.step-arrow {
  color: var(--muted);
  opacity: 0.35;
}
.tour-step:hover {
  background: #eeece5;
}
.tour-step[aria-pressed="true"] {
  background: #ebe7de;
  border-top-color: var(--copper);
}
.tour-step[aria-pressed="true"] .step-number,
.tour-step[aria-pressed="true"] .step-arrow {
  color: var(--copper);
  opacity: 1;
}
.tour-preview {
  margin: 0;
  min-width: 0;
}
.screenshot-button {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid #cdd1cf;
  background: #fff;
  box-shadow: 0 14px 30px -20px #0f172a44;
  overflow: hidden;
}
.screenshot-button img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: contain;
}
.enlarge-hint {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: var(--paper);
  font-size: 10px;
  color: var(--ink);
  opacity: 0;
  transition: opacity 0.2s;
}
.screenshot-button:hover .enlarge-hint,
.screenshot-button:focus-visible .enlarge-hint {
  opacity: 1;
}
.tour-preview figcaption {
  display: flex;
  gap: 22px;
  font-size: 11px;
  line-height: 1.6;
  color: var(--muted);
  padding-top: 19px;
  min-height: 50px;
}
#tour-counter {
  font-variant-numeric: tabular-nums;
  color: var(--copper);
  white-space: nowrap;
  font-size: 10px;
  letter-spacing: 1px;
}
.no-script {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}
.fit-story {
  background: var(--blue);
  border-block: 1px solid #dbe4e6;
  overflow: hidden;
}
.fit-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 70px;
  padding-block: 75px;
  align-items: center;
}
.fit-layout h2 {
  font-size: clamp(37px, 4.4vw, 66px);
  letter-spacing: -2px;
}
.fit-layout > div > p:not(.eyebrow) {
  max-width: 450px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}
.fit-maths {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-block: 37px 22px;
  padding-block: 24px;
  border-block: 1px solid #c7d4d9;
  max-width: 510px;
}
.fit-maths strong {
  display: block;
  font-family: var(--serif);
  font-size: 35px;
  font-weight: 400;
  white-space: nowrap;
}
.fit-maths strong span {
  font-family: var(--sans);
  font-size: 12px;
  margin-left: 4px;
}
.fit-maths small {
  display: block;
  font-size: 10px;
  color: var(--muted);
  margin-top: 8px;
  line-height: 1.5;
}
.fit-maths > span {
  color: #859ba4;
}
.fit-layout > div > p.fine-print {
  font-size: 11px;
  line-height: 1.7;
  max-width: 425px;
}
.phone-print {
  width: min(100%, 300px);
  justify-self: center;
  transform: rotate(2deg);
  position: relative;
  box-shadow: 0 18px 38px -25px #15344755;
}
.print-label {
  position: absolute;
  top: -25px;
  left: 0;
  font-size: 9px;
  color: var(--muted);
  letter-spacing: 1.5px;
}
.phone-print img {
  border: 1px solid #d7e3e7;
}
.field-notes {
  padding-block: 87px 82px;
}
.field-notes .section-heading {
  border: 0;
  padding-top: 0;
}
.notes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 52px;
}
.notes-grid article {
  border-top: 1px solid var(--line);
  padding-top: 23px;
}
.note-index {
  font-size: 9px;
  color: var(--copper);
  letter-spacing: 1.4px;
}
h3 {
  font-family: var(--serif);
  font-size: 27px;
  font-weight: 400;
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-block: 22px 16px;
  max-width: 310px;
}
.notes-grid p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0;
}
.contact {
  padding-block: 58px 64px;
  border-top: 1px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 45px;
}
.contact .eyebrow {
  margin-bottom: 18px;
}
.contact p:not(.eyebrow) {
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 375px;
  margin-bottom: 0;
}
.contact-link {
  font-size: clamp(18px, 2.5vw, 32px);
  letter-spacing: -0.8px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
  white-space: nowrap;
}
.contact-link span {
  margin-left: 20px;
  color: var(--copper);
}
.contact-link:hover {
  border-bottom-color: var(--copper);
}
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  border-top: 1px solid var(--line);
  padding-block: 31px 38px;
}
.footer .brand {
  width: 118px;
}
.footer-legal {
  font-size: 11px;
  color: var(--muted);
}
.footer-legal a:hover {
  color: var(--copper);
}
.policy-main {
  padding-block: 72px 80px;
}
.policy-content {
  max-width: 720px;
  margin-inline: auto;
}
.policy-content h1 {
  font-size: clamp(44px, 6vw, 68px);
  letter-spacing: -2px;
}
.policy-content h2 {
  font-size: 29px;
  letter-spacing: -0.6px;
  margin-bottom: 17px;
}
.policy-content p {
  font-size: 16px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}
.policy-content .eyebrow {
  font-size: 10px;
}
.policy-content .policy-updated {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 32px;
}
.policy-content section {
  padding-top: 28px;
  margin-top: 26px;
  border-top: 1px solid var(--line);
}
.policy-content a {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.footer p,
.footer small {
  font-size: 10px;
  color: var(--muted);
  margin: 0;
  line-height: 1.6;
}
dialog {
  width: min(1200px, calc(100% - 40px));
  max-height: 90vh;
  max-height: 90dvh;
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 24px 80px #0003;
}
dialog::backdrop {
  background: #0f172abf;
  backdrop-filter: blur(4px);
}
.dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  font-size: 11px;
  margin-bottom: 16px;
}
.dialog-header button {
  border: 1px solid var(--line);
  background: transparent;
  padding: 11px 16px;
  font-size: 12px;
}
.dialog-header button span {
  margin-left: 16px;
  font-size: 17px;
}
dialog img {
  width: 100%;
}
body:has(dialog[open]) {
  overflow: hidden;
}
@media (min-width: 1500px) {
  .hero {
    gap: 70px;
  }
}
@media (max-width: 1050px) {
  .wrap {
    width: calc(100% - 64px);
  }
  .hero {
    gap: 28px;
    min-height: 0;
    padding-top: 60px;
  }
  h1 {
    font-size: 65px;
    letter-spacing: -3px;
  }
  .hero-drawing {
    padding: 30px 17px 45px;
  }
  .drawing-note {
    font-size: 8px;
    letter-spacing: 0.5px;
  }
  .drawing-caption {
    gap: 12px;
  }
  .drawing-caption > span:nth-child(2) {
    font-size: 23px;
  }
  .drawing-caption > span:last-child {
    font-size: 9px;
  }
  .intro {
    grid-template-columns: 1fr 2fr;
    gap: 25px;
  }
  .intro > p:last-child {
    grid-column: 2;
  }
  .tour-layout {
    grid-template-columns: 290px 1fr;
    gap: 28px;
  }
  .tour-step {
    gap: 10px;
    padding: 17px 8px;
  }
  .fit-layout {
    gap: 35px;
  }
  .notes-grid {
    gap: 30px;
  }
  .fit-maths {
    gap: 15px;
  }
  .fit-maths strong {
    font-size: 30px;
  }
}
@media (max-width: 760px) {
  .wrap {
    width: calc(100% - 40px);
  }
  .masthead {
    padding-block: 22px;
    gap: 16px;
  }
  .brand {
    width: 137px;
  }
  .masthead nav {
    gap: 20px;
    font-size: 12px;
  }
  .masthead nav > a:first-child {
    display: none;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-block: 48px 58px;
    gap: 49px;
  }
  .hero-copy .eyebrow {
    font-size: 9px;
    letter-spacing: 1.2px;
  }
  h1 {
    font-size: clamp(58px, 11vw, 85px);
    letter-spacing: -3px;
  }
  .hero-explanation {
    max-width: 480px;
  }
  .hero-drawing {
    width: calc(100% - 12px);
    margin-inline: auto;
    padding: 28px 20px 43px;
    transform: rotate(-1deg);
  }
  .drawing-note {
    font-size: 9px;
    letter-spacing: 0.5px;
  }
  .drawing-caption {
    grid-template-columns: 1fr auto auto;
    gap: 18px;
  }
  .drawing-caption > span:nth-child(2) {
    font-size: 27px;
  }
  .intro {
    grid-template-columns: 1fr;
    padding-block: 40px 47px;
    gap: 10px;
  }
  .intro .eyebrow {
    margin-bottom: 14px;
  }
  .intro > p:last-child {
    grid-column: auto;
    max-width: 510px;
    margin-top: 8px;
  }
  .intro h2 {
    font-size: 34px;
  }
  .section-heading {
    padding-top: 35px;
    margin-bottom: 30px;
  }
  .tour-hint {
    position: static;
    margin: 23px 0 0;
  }
  .tour {
    padding-bottom: 55px;
  }
  .tour-layout {
    display: flex;
    flex-direction: column;
    gap: 25px;
    align-items: stretch;
  }
  .tour-steps {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    border-bottom: 1px solid var(--line);
    padding-bottom: 10px;
    gap: 10px;
  }
  .tour-step {
    flex: 0 0 265px;
    scroll-snap-align: start;
    border-bottom: 0 !important;
    min-height: 143px;
    align-items: start;
    padding: 18px 12px;
  }
  .tour-step strong {
    font-size: 14px;
  }
  .step-description {
    font-size: 12px;
  }
  .tour-preview figcaption {
    gap: 15px;
    min-height: 56px;
  }
  .enlarge-hint {
    opacity: 1;
    font-size: 9px;
    padding: 6px 8px;
    bottom: 8px;
    right: 8px;
  }
  .fit-layout {
    grid-template-columns: 1fr;
    padding-block: 44px 47px;
    gap: 42px;
  }
  .fit-layout h2 {
    font-size: 43px;
  }
  .fit-maths {
    gap: 15px;
    justify-content: space-between;
  }
  .fit-maths strong {
    font-size: 30px;
  }
  .fit-maths small {
    font-size: 9px;
  }
  .phone-print {
    width: 265px;
    transform: rotate(1deg);
  }
  .field-notes {
    padding-block: 49px;
  }
  .notes-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .notes-grid article {
    padding-top: 18px;
  }
  .notes-grid h3 {
    font-size: 27px;
    max-width: 370px;
    margin-top: 17px;
  }
  .notes-grid p {
    max-width: 510px;
  }
  .contact {
    display: block;
    padding-block: 37px 43px;
  }
  .contact-link {
    display: inline-block;
    font-size: clamp(19px, 5.6vw, 30px);
    margin-top: 31px;
  }
  .contact-link span {
    margin-left: 12px;
  }
  .footer {
    flex-wrap: wrap;
    padding-block: 26px;
    gap: 20px;
  }
  .footer p {
    flex-basis: calc(100% - 158px);
  }
  .footer small {
    width: 100%;
  }
  dialog {
    padding: 12px;
    width: calc(100% - 20px);
  }
  .dialog-header {
    font-size: 10px;
  }
}
@media (max-width: 380px) {
  .masthead nav {
    gap: 12px;
  }
  .brand {
    width: 119px;
  }
  .nav-contact span {
    margin-left: 5px;
  }
  .hero-actions {
    gap: 15px;
  }
  .fit-maths {
    gap: 9px;
  }
  .fit-maths strong {
    font-size: 27px;
  }
  .fit-layout h2 {
    font-size: 38px;
  }
  .drawing-caption {
    gap: 10px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}