@font-face {
  font-family: "EB Garamond";
  src: url("../fonts/eb-garamond-variable.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
}

:root {
  --ink: #231f20;
  --ink-soft: #4b4848;
  --paper: #ffffff;
  --paper-warm: #f5f2eb;
  --water: #0b5c7a;
  --water-deep: #073e52;
  --water-pale: #e9f2f5;
  --earth: #6c4b30;
  --forest: #283818;
  --sun: #f8d898;
  --border: #d8d2c7;
  --serif: "EB Garamond", Georgia, Cambria, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --container: 72rem;
  --measure: 68ch;
  --shadow: 0 1.5rem 4rem rgba(35, 31, 32, 0.18);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 7rem;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

a {
  color: var(--water-deep);
  text-decoration-thickness: 0.09em;
  text-underline-offset: 0.16em;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid #d88d13;
  outline-offset: 4px;
}

::selection {
  color: var(--paper);
  background: var(--water);
}

h1,
h2,
h3,
p,
blockquote {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  line-height: 1.04;
  text-wrap: balance;
}

h1 {
  margin-bottom: 1.25rem;
  font-size: clamp(3.35rem, 10vw, 7.25rem);
  font-weight: 470;
  letter-spacing: -0.035em;
}

h2 {
  margin-bottom: 1.5rem;
  font-size: clamp(2.35rem, 6vw, 4.5rem);
  font-weight: 480;
  letter-spacing: -0.025em;
}

h3 {
  margin-bottom: 0.65rem;
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  font-weight: 600;
}

p,
li {
  max-width: var(--measure);
}

.skip-link {
  position: fixed;
  top: -6rem;
  left: 1rem;
  z-index: 200;
  padding: 0.8rem 1rem;
  color: var(--paper);
  background: var(--ink);
  font-weight: 700;
}

.skip-link:focus {
  top: 1rem;
}

.container {
  width: min(calc(100% - 2.5rem), var(--container));
  margin-inline: auto;
}

.measure {
  max-width: var(--measure);
}

.eyebrow {
  margin-bottom: 0.85rem;
  color: var(--water);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1.3;
  text-transform: uppercase;
}

.eyebrow--sun {
  color: var(--sun);
}

.lead {
  max-width: 58ch;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  line-height: 1.42;
}

.lead--light {
  color: rgba(255, 255, 255, 0.82);
}

.fine-print {
  color: var(--ink-soft);
  font-size: 0.84rem;
  line-height: 1.5;
}

.section {
  padding-block: clamp(4.75rem, 10vw, 8rem);
}

.section--warm {
  background: var(--paper-warm);
}

.section--water {
  color: var(--paper);
  background: var(--water-deep);
}

.section--water a {
  color: var(--paper);
}

.section--water .button--light {
  color: var(--water-deep);
}

.section--water .button--light:hover {
  color: var(--water-deep);
}

.section-heading {
  display: grid;
  gap: 1rem;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.section-heading > p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(216, 210, 199, 0.85);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  min-height: 4.75rem;
  padding-block: 0.75rem;
}

.wordmark {
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex: 1 1 100%;
  align-items: center;
  gap: 0.75rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  white-space: nowrap;
}

.nav-list a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 0.55rem 0.65rem;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
}

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--water);
  text-decoration: underline;
  text-underline-offset: 0.35rem;
}

.header-cta {
  display: none;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.78rem 1.15rem;
  border: 2px solid var(--water-deep);
  color: var(--paper);
  background: var(--water-deep);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.94rem;
  font-weight: 750;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.button:hover {
  border-color: var(--water);
  color: var(--paper);
  background: var(--water);
}

.button--secondary {
  color: var(--water-deep);
  background: transparent;
}

.button--secondary:hover {
  color: var(--paper);
  background: var(--water-deep);
}

.button--light {
  border-color: var(--paper);
  color: var(--water-deep);
  background: var(--paper);
}

.button--light:hover {
  border-color: var(--sun);
  color: var(--water-deep);
  background: var(--sun);
}

.text-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  font-weight: 750;
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(3.5rem, 8vw, 7.5rem);
  background: var(--paper-warm);
}

.hero::before {
  position: absolute;
  right: -11rem;
  bottom: -5rem;
  z-index: -1;
  width: 32rem;
  height: 32rem;
  border: 1px solid rgba(11, 92, 122, 0.16);
  border-radius: 50%;
  box-shadow: 0 0 0 4rem rgba(11, 92, 122, 0.04), 0 0 0 8rem rgba(11, 92, 122, 0.025);
  content: "";
}

.hero__grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.hero__copy {
  max-width: 45rem;
}

.hero__promise {
  max-width: 48ch;
  margin-bottom: 2rem;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  line-height: 1.4;
}

.hero__meta {
  margin-top: 1.5rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.hero__visual {
  justify-self: center;
  width: min(100%, 23rem);
}

.book-cover {
  width: 100%;
  border: 1px solid rgba(35, 31, 32, 0.2);
  box-shadow: var(--shadow);
}

.book-cover-link {
  display: block;
  transition: opacity 180ms ease;
}

.book-cover-link:hover {
  opacity: 0.94;
}

.fact-grid,
.content-grid,
.retailer-grid,
.press-grid {
  display: grid;
  gap: 1rem;
}

.fact-card,
.content-card,
.retailer-card,
.press-card {
  border: 1px solid var(--border);
  background: var(--paper);
}

.fact-card,
.content-card,
.press-card {
  padding: clamp(1.4rem, 3vw, 2rem);
}

.fact-card__value {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--water-deep);
  font-family: var(--serif);
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 600;
  line-height: 1;
}

.fact-card p:last-child,
.content-card p:last-child,
.press-card p:last-child {
  margin-bottom: 0;
}

.source-link {
  font-size: 0.8rem;
  font-weight: 700;
}

.network-rail {
  position: relative;
  display: grid;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.network-rail::before {
  position: absolute;
  top: 1.5rem;
  bottom: 1.5rem;
  left: 1.25rem;
  width: 2px;
  background: var(--water);
  content: "";
}

.network-rail__item {
  position: relative;
  padding: 0.5rem 0 0.5rem 4rem;
}

.network-rail__node {
  position: absolute;
  top: 0.95rem;
  left: 0.7rem;
  width: 1.15rem;
  height: 1.15rem;
  border: 4px solid var(--paper-warm);
  border-radius: 50%;
  background: var(--water);
  box-shadow: 0 0 0 2px var(--water);
}

.network-rail strong {
  display: block;
  color: var(--water-deep);
  font-family: var(--serif);
  font-size: 2rem;
  line-height: 1.1;
}

.quote-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(2.25rem, 7vw, 5rem);
  color: var(--water-deep);
  background: var(--water-pale);
}

.quote-panel::after {
  position: absolute;
  right: -1rem;
  bottom: -5rem;
  color: rgba(11, 92, 122, 0.1);
  font-family: var(--serif);
  font-size: 16rem;
  line-height: 1;
  content: "”";
}

.quote-panel blockquote {
  position: relative;
  z-index: 1;
  max-width: 28ch;
  margin-bottom: 1.5rem;
  font-family: var(--serif);
  font-size: clamp(1.7rem, 5vw, 3.75rem);
  line-height: 1.13;
}

.quote-panel cite {
  font-style: normal;
  font-weight: 750;
}

.author-block {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.author-signature {
  display: grid;
  width: min(100%, 18rem);
  aspect-ratio: 1;
  place-items: center;
  justify-self: center;
  border: 1px solid var(--border);
  color: var(--water-deep);
  background: var(--paper-warm);
  font-family: var(--serif);
  font-size: clamp(4rem, 16vw, 8rem);
  font-weight: 500;
  letter-spacing: -0.08em;
}

.book-feature {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.book-feature__visual {
  width: min(100%, 18rem);
  justify-self: center;
}

.book-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.15rem;
  margin: 1.25rem 0 1.75rem;
  padding: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  list-style: none;
}

.retailer-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.5rem;
}

.retailer-card--featured {
  border-color: var(--water);
  box-shadow: inset 0 4px 0 var(--water);
}

.retailer-card__label {
  color: var(--water);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.retailer-card h3 {
  font-size: 1.8rem;
}

.retailer-card p {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 1.25rem 0 0;
  color: var(--ink-soft);
  font-size: 0.84rem;
  list-style: none;
}

.breadcrumb li:not(:last-child)::after {
  margin-left: 0.45rem;
  color: var(--border);
  content: "/";
}

.page-hero {
  padding-block: clamp(2.5rem, 7vw, 5.5rem);
  background: var(--paper-warm);
}

.page-hero h1 {
  max-width: 12ch;
  font-size: clamp(3.1rem, 9vw, 6.4rem);
}

.page-hero__grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.page-hero__cover {
  width: min(100%, 19rem);
  justify-self: center;
}

.definition-list {
  display: grid;
  gap: 0;
  max-width: 50rem;
  margin: 0;
  border-top: 1px solid var(--border);
}

.definition-list > div {
  display: grid;
  gap: 0.25rem;
  padding-block: 0.85rem;
  border-bottom: 1px solid var(--border);
}

.definition-list dt {
  font-weight: 800;
}

.definition-list dd {
  margin: 0;
  color: var(--ink-soft);
}

.download-card {
  display: grid;
  gap: 1rem;
  align-content: start;
  padding: 1.5rem;
  border: 1px solid var(--border);
}

.download-card h3,
.download-card p {
  margin-bottom: 0;
}

.legal-content {
  max-width: 52rem;
}

.legal-content h2 {
  margin-top: 2.75rem;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
}

.error-page {
  display: grid;
  min-height: 70vh;
  align-items: center;
  padding-block: 4rem;
}

.error-page__code {
  margin-bottom: 0;
  color: var(--water);
  font-family: var(--serif);
  font-size: clamp(6rem, 30vw, 15rem);
  line-height: 0.7;
}

.site-footer {
  padding-block: 3rem;
  color: rgba(255, 255, 255, 0.82);
  background: var(--water-deep);
}

.site-footer__grid {
  display: grid;
  gap: 2rem;
}

.site-footer .wordmark,
.site-footer a {
  color: var(--paper);
}

.site-footer .fine-print {
  color: rgba(255, 255, 255, 0.76);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}

@media (min-width: 36rem) {
  .site-nav {
    flex: 1 1 auto;
    justify-content: flex-end;
  }

  .header-cta {
    display: inline-flex;
  }

  .fact-grid,
  .content-grid,
  .retailer-grid,
  .press-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 48rem) {
  .hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(17rem, 0.75fr);
    gap: clamp(3rem, 7vw, 7rem);
  }

  .fact-grid,
  .content-grid,
  .retailer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .network-rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
  }

  .network-rail::before {
    top: 1.28rem;
    right: 12%;
    bottom: auto;
    left: 12%;
    width: auto;
    height: 2px;
  }

  .network-rail__item {
    padding: 4rem 1rem 0;
    text-align: center;
  }

  .network-rail__node {
    top: 0.7rem;
    left: 50%;
    translate: -50% 0;
  }

  .network-rail__item p {
    margin-inline: auto;
  }

  .author-block {
    grid-template-columns: 18rem minmax(0, 1fr);
    gap: clamp(3rem, 7vw, 6rem);
  }

  .book-feature {
    grid-template-columns: minmax(15rem, 0.6fr) minmax(0, 1.4fr);
    gap: clamp(3rem, 7vw, 6rem);
  }

  .page-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(16rem, 0.65fr);
    gap: clamp(3rem, 7vw, 7rem);
  }

  .definition-list > div {
    grid-template-columns: 12rem minmax(0, 1fr);
    gap: 1.5rem;
  }

  .site-footer__grid {
    grid-template-columns: minmax(15rem, 1fr) auto;
    align-items: end;
  }
}

@media (min-width: 64rem) {
  .site-header__inner {
    flex-wrap: nowrap;
  }

  .site-nav {
    overflow: visible;
  }

  .nav-list a {
    padding-inline: 0.8rem;
  }

  .press-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .site-header,
  .site-footer,
  .button-row,
  .skip-link {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
    font-size: 11pt;
  }

  .section,
  .hero,
  .page-hero {
    padding-block: 1.5rem;
    background: #fff;
  }

  a {
    color: #000;
  }
}