:root {
  color-scheme: light;
  --font-base: 'Overpass', 'Arial Narrow', Arial, sans-serif;
  --font-mono: 'Overpass Mono', 'IBM Plex Mono', 'Roboto Mono', monospace;

  /* Brand palette from spec */
  --color-background: #ffffff;
  --color-surface: #f8f8f8;
  --color-surface-alt: #e6efe7;
  --color-text: #1e1e1e;
  /* neutral_black */
  --color-text-muted: #666666;
  /* neutral_gray */
  --color-text-inverse: #ffffff;
  --color-text-muted-inverse: #bbbbbb;
  --color-border: rgba(30, 30, 30, 0.14);
  --color-link: #4f93c2;
  /* brand_blue */
  --color-link-hover: #ef5a4d;
  /* brand_coral */
  --color-primary: #4f93c2;
  /* brand_blue */
  --color-secondary: #ef5a4d;
  /* brand_coral */
  --color-accent: #ef5a4d;
  /* brand_coral */

  --header-background: #1e1e1e;
  --header-border: rgba(255, 255, 255, 0.08);
  --nav-link-color: #bbbbbb;
  --nav-link-active: #ef5a4d;

  --brand-mark-background: #ffffff;
  --brand-label-color: #1e1e1e;

  --hero-background: #ffffff;
  --hero-accent-layer: rgba(79, 147, 194, 0.08);
  --hero-border-color: #4f93c2;
  --hero-text-primary: #1e1e1e;
  --hero-text-muted: #666666;
  --hero-card-background: #f8f8f8;
  --hero-card-border: #4f93c2;

  --card-background: #f8f8f8;
  --card-border: #e6efe7;

  --footer-background: #1e1e1e;
  --footer-border: rgba(255, 255, 255, 0.1);
  --footer-text: #bbbbbb;

  --card-border: #e6efe7;

  --footer-background: #1e1e1e;
  --footer-border: rgba(255, 255, 255, 0.1);
  --footer-text: #bbbbbb;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --color-background: #161c24;
    --color-surface: #1a1a1a;
    --color-surface-alt: #232323;
    --color-text: #f2f4f8;
    --color-text-muted: #bbbbbb;
    --color-text-inverse: #1e1e1e;
    --color-text-muted-inverse: #666666;
    --color-border: #232323;
    --color-link: #7fb8e0;
    /* brand_blue_dark */
    --color-link-hover: #ff867b;
    /* brand_coral_dark */
    --color-primary: #7fb8e0;
    /* brand_blue_dark */
    --color-secondary: #ff867b;
    /* brand_coral_dark */
    --color-accent: #ff867b;

    --header-background: #1e1e1e;
    --header-border: rgba(255, 255, 255, 0.08);
    --nav-link-color: #bbbbbb;
    --nav-link-active: #ff867b;

    --brand-mark-background: #232323;
    --brand-label-color: #ffffff;

    --hero-background: #161c24;
    --hero-accent-layer: rgba(127, 184, 224, 0.08);
    --hero-border-color: #7fb8e0;
    --hero-text-primary: #f2f4f8;
    --hero-text-muted: #bbbbbb;
    --hero-card-background: #232323;
    --hero-card-border: #7fb8e0;

    --card-background: #232323;
    --card-border: #1a1a1a;

    --footer-background: #1e1e1e;
    --footer-border: rgba(255, 255, 255, 0.1);
    --footer-text: #bbbbbb;
  }
}

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

html {
  font-size: 16px;
  font-family: var(--font-base);
  font-weight: 400;
  letter-spacing: 0.01em;
}

body {
  margin: 0;
  font-family: var(--font-base);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.4;
  font-weight: 400;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

a {
  color: var(--color-link);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  color: var(--color-link-hover);
  text-decoration: underline;
}

h1,
h2,
h3,
h4 {
  margin-top: 0;
  color: var(--color-text);
  font-family: var(--font-base);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: none;
}

h1 {
  font-size: clamp(2.6rem, 4vw, 3.4rem);
  font-weight: 700;
  letter-spacing: 0.02em;
}

h2 {
  font-size: clamp(2rem, 3vw, 2.7rem);
  font-weight: 600;
}

h3 {
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  font-weight: 500;
}

h4 {
  font-size: clamp(1.1rem, 1.6vw, 1.3rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-secondary);
  text-transform: none;
}

p {
  margin: 0 0 1.2rem;
  color: var(--color-text);
  font-size: 1.08rem;
  font-weight: 400;
}

ul {
  margin: 0 0 1.6rem;
  padding-left: 1.3rem;
  color: var(--color-text-muted);
}

.container {
  width: min(1160px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: var(--header-background);
  border-bottom: 1px solid var(--header-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.9rem 0;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  color: var(--brand-label-color);
}

.site-brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  /* remove boxed background and padding so the logo sits flush on the header */
  min-width: 0;
  min-height: 0;
  padding: 0;
  background: transparent;
  border-radius: 0;
}

.site-brand__mark picture,
.site-brand__mark img {
  display: block;
}

.site-brand__mark img {
  width: auto;
  height: 40px;
}

.site-brand__mark img.is-hidden {
  display: none;
}

.site-brand__label {
  display: none;
  flex-direction: column;
  line-height: 0.95;
  letter-spacing: 0.04em;
  font-size: 0.92rem;
  font-family: var(--font-base);
  text-transform: none;
}

.site-brand--fallback .site-brand__mark {
  display: none;
}

.site-brand--fallback .site-brand__label {
  display: flex;
}

.site-brand__label-open {
  font-weight: 100;
}

.site-brand__label-road,
.site-brand__label-book {
  font-weight: 700;
}

.site-nav {
  display: flex;
  gap: 1.4rem;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-nav a {
  color: var(--nav-link-color);
}

.site-nav a[aria-current="page"] {
  color: var(--nav-link-active);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-accent);
}

.hero {
  position: relative;
  overflow: hidden;
  background: var(--hero-background);
  color: var(--hero-text-primary);
  padding: clamp(4rem, 9vw, 7rem) 0;
}

.hero::before {
  content: "";
  position: absolute;
  top: -45%;
  right: -20%;
  width: 70%;
  height: 180%;
  background: var(--hero-accent-layer);
  transform: rotate(-6deg);
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: var(--hero-border-color);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
  align-items: stretch;
}

@media (min-width: 960px) {
  .hero__inner {
    grid-template-columns: 1.2fr 1fr;
  }
}

.hero__title {
  color: var(--hero-text-primary);
  line-height: 1.05;
  margin-bottom: 1rem;
}

.hero__lead {
  color: var(--hero-text-muted);
  font-size: 1.15rem;
  max-width: 620px;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.hero__card {
  background-color: var(--hero-card-background);
  padding: 2rem;
  border-radius: 1rem;
  border: 2px solid var(--hero-card-border);
  display: grid;
  gap: 1.4rem;
  color: var(--color-text);
}

.hero__card h4 {
  margin: 0;
}

.hero__card--inset {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.hero__card--inset .hero__card-visual {
  position: relative;
  overflow: hidden;
}

.hero__card--inset .hero__card-visual picture,
.hero__card--inset .hero__card-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.hero__card--inset .hero__card-visual::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 100px;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(8, 11, 22, 0) 0%, var(--hero-card-background) 100%);
}

.hero__card--inset .hero__card-content {
  padding: 2rem;
  display: grid;
  gap: 1.4rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.9rem;
  border-radius: 999px;
  border: 2px solid var(--color-primary);
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  background-color: #276a97;
  border-color: #276a97;
  color: var(--color-text-inverse);
}

.btn--secondary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
  transition: background 0.2s, color 0.2s;
}

.btn--secondary:hover,
.btn--secondary:focus-visible {
  background-color: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  text-decoration: none;
}

.hero .btn--secondary {
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none !important;
}

/* Ensure contrast on hero section for secondary button */
.hero .btn {
  text-decoration: none;
}

/* Ensure contrast on hero section for secondary button */
.hero .btn--secondary:hover,
.hero .btn--secondary:focus-visible {
  color: var(--color-text-inverse);
}

.btn--ghost {
  background-color: transparent;
  border-color: transparent;
  color: var(--color-primary);
  padding-left: 0;
  padding-right: 0;
  text-decoration: none;
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  color: #fff;
  text-decoration: none;
}

/* Only underline links in paragraph text on hover/focus */
p a:hover,
p a:focus-visible {
  text-decoration: underline;
}

.section {
  padding: clamp(3.5rem, 7vw, 5.6rem) 0;
  background-color: var(--color-background);
}

.section--surface {
  background-color: var(--color-surface);
}

.section--surface-alt {
  background-color: var(--color-surface-alt);
}

.section__header {
  max-width: 720px;
  margin-bottom: clamp(2.2rem, 4vw, 3rem);
}

.section--surface-alt .section__header h2,
.section--surface-alt h3 {
  color: var(--color-text);
}

.section--surface-alt .section__header p {
  color: var(--color-text-muted);
}

.split {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
  align-items: start;
}

@media (min-width: 880px) {
  .split {
    grid-template-columns: 1.35fr 1fr;
  }
}

.fact-card {
  padding: 2rem;
  border-radius: 1rem;
  background-color: var(--card-background);
  border: 1.5px solid var(--card-border);
  border-left: 6px solid var(--color-secondary);
  display: grid;
  gap: 1rem;
}

.fact-card h3 {
  margin: 0;
  text-transform: uppercase;
  font-size: 1rem;
  letter-spacing: 0.12em;
  color: var(--color-secondary);
}

.fact-card dl {
  margin: 0;
  display: grid;
  gap: 1rem;
  font-size: 0.98rem;
}

.fact-card dt {
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  font-family: var(--font-base);
}

.fact-card dd {
  margin: 0.25rem 0 0;
  color: var(--color-text);
  font-family: var(--font-base);
}

.feature-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.feature-list li {
  position: relative;
  padding-left: 1.8rem;
  color: var(--color-text);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75rem;
  width: 1.1rem;
  height: 0.18rem;
  background-color: var(--color-secondary);
  transform: skewX(-18deg);
  border-radius: 999px;
}

.audience-grid,
.brand-grid,
.asset-grid,
.resource-grid {
  display: grid;
  gap: 1.8rem;
}

@media (min-width: 700px) {
  .audience-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {

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

@media (min-width: 780px) {
  .asset-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.audience-grid article,
.brand-card,
.asset-grid figure,
.resource-card {
  padding: 1.8rem;
  border-radius: 1rem;
  background-color: var(--card-background);
  border: 1.5px solid var(--card-border);
  display: grid;
  gap: 1rem;
}

.resource-card h3 {
  margin-bottom: 0.4rem;
}

.resource-card p {
  margin-bottom: 0.6rem;
}

.asset-grid figure {
  margin: 0;
}

.asset-grid figcaption {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.footer {
  background-color: var(--footer-background);
  color: var(--hero-text-primary);
  padding: 2.6rem 0;
  border-top: 1px solid var(--footer-border);
}

.footer__inner {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 720px) {
  .footer__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: center;
  }
}

.footer strong {
  text-transform: none;
  letter-spacing: 0.08em;
}

.footer p {
  margin-bottom: 0.4rem;
  color: var(--footer-text);
}

.footer__link {
  display: inline-block;
  margin-top: 0.4rem;
  font-size: 0.9rem;
  color: var(--color-accent);
}

.footer__link:hover,
.footer__link:focus-visible {
  color: var(--color-secondary);
}

@media (prefers-reduced-motion: reduce) {

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