:root {
  --color-petrol: #1F4E5F;
  --color-sand: #E4D5B7;
  --color-brick: #A63D2F;
  --color-offwhite: #F5F0E6;
  --color-ink: #2B2B2B;
  --color-white: #FFFFFF;

  --font-heading: Georgia, serif;
  --font-body: Arial, sans-serif;

  --text-display-size: clamp(2.5rem, 5vw + 1rem, 3rem);
  --text-display-line-height: 1.1;
  --text-display-weight: 700;

  --text-h1-size: clamp(2rem, 4vw + 0.75rem, 2.25rem);
  --text-h1-line-height: 1.2;
  --text-h1-weight: 700;

  --text-h2-size: clamp(1.625rem, 3vw + 0.5rem, 1.75rem);
  --text-h2-line-height: 1.3;
  --text-h2-weight: 700;

  --text-h3-size: clamp(1.25rem, 2vw + 0.5rem, 1.375rem);
  --text-h3-line-height: 1.4;
  --text-h3-weight: 700;

  --text-body-size: 1rem;
  --text-body-line-height: 1.6;
  --text-body-weight: 400;

  --text-small-size: 0.875rem;
  --text-small-line-height: 1.5;
  --text-small-weight: 400;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-xxl: 6rem;

  --container-max: 75rem;
  --container-padding: var(--space-md);

  --surface-page: var(--color-offwhite);
  --surface-panel: var(--color-white);
  --surface-panel-accent: var(--color-sand);
  --surface-panel-dark: var(--color-petrol);

  --shadow-subtle: 0 2px 8px rgba(27, 27, 27, 0.06);
  --shadow-soft: 0 4px 16px rgba(27, 27, 27, 0.08);

  --radius-none: 0;
  --radius-sm: 4px;
  --radius-md: 8px;

  --border-thin: 1px solid;
  --border-color-petrol: var(--color-petrol);
  --border-color-sand: var(--color-sand);

  --transition-fast: 0.2s ease;
  --focus-ring-color: var(--color-brick);
  --focus-ring-width: 3px;
}

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

* {
  margin: 0;
}

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

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: var(--text-body-size);
  font-weight: var(--text-body-weight);
  line-height: var(--text-body-line-height);
  color: var(--color-ink);
  background-color: var(--surface-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: var(--text-h1-weight);
  line-height: var(--text-h1-line-height);
  color: var(--color-petrol);
  overflow-wrap: break-word;
}

h1 {
  font-size: var(--text-h1-size);
  line-height: var(--text-h1-line-height);
  margin-block-end: var(--space-md);
}

h2 {
  font-size: var(--text-h2-size);
  line-height: var(--text-h2-line-height);
  margin-block-end: var(--space-sm);
}

h3 {
  font-size: var(--text-h3-size);
  line-height: var(--text-h3-line-height);
  margin-block-end: var(--space-xs);
}

h4,
h5,
h6 {
  font-size: var(--text-body-size);
  line-height: var(--text-body-line-height);
  margin-block-end: var(--space-xs);
}

p {
  margin-block-end: var(--space-sm);
  overflow-wrap: break-word;
}

ul,
ol {
  margin-block-end: var(--space-sm);
  padding-inline-start: var(--space-md);
}

blockquote {
  margin-block-end: var(--space-sm);
  padding-inline-start: var(--space-md);
  border-inline-start: 4px solid var(--color-sand);
  color: var(--color-petrol);
}

figure {
  margin-block-end: var(--space-sm);
}

figcaption {
  font-size: var(--text-small-size);
  line-height: var(--text-small-line-height);
  color: var(--color-petrol);
  margin-block-start: var(--space-xs);
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

a {
  color: var(--color-petrol);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  transition: color var(--transition-fast);
}

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

:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.surface-panel {
  background-color: var(--surface-panel);
  border: var(--border-thin) var(--border-color-sand);
  border-radius: var(--radius-none);
  box-shadow: var(--shadow-subtle);
  padding: var(--space-md);
}

.surface-panel-accent {
  background-color: var(--surface-panel-accent);
  border: var(--border-thin) var(--border-color-sand);
  border-radius: var(--radius-none);
  padding: var(--space-md);
}

.surface-panel-dark {
  background-color: var(--surface-panel-dark);
  color: var(--color-white);
  border-radius: var(--radius-none);
  padding: var(--space-md);
}

.surface-panel-dark h1,
.surface-panel-dark h2,
.surface-panel-dark h3,
.surface-panel-dark h4,
.surface-panel-dark h5,
.surface-panel-dark h6 {
  color: var(--color-white);
}

.surface-panel-dark a {
  color: var(--color-sand);
}

.surface-panel-dark a:hover {
  color: var(--color-white);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--space-xs) var(--space-md);
  font-family: var(--font-body);
  font-size: var(--text-body-size);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: var(--border-thin) transparent;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-petrol);
  color: var(--color-white);
  border-color: var(--color-petrol);
}

.btn-primary:hover {
  background-color: #173B47;
  border-color: #173B47;
  color: var(--color-white);
}

.btn-accent {
  background-color: var(--color-brick);
  color: var(--color-white);
  border-color: var(--color-brick);
}

.btn-accent:hover {
  background-color: #8A3226;
  border-color: #8A3226;
  color: var(--color-white);
}

.btn-secondary {
  background-color: var(--color-sand);
  color: var(--color-petrol);
  border-color: var(--color-sand);
}

.btn-secondary:hover {
  background-color: #D4C29A;
  border-color: #D4C29A;
  color: var(--color-petrol);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-petrol);
  border-color: var(--color-petrol);
}

.btn-outline:hover {
  background-color: var(--color-petrol);
  color: var(--color-white);
}

.flex-row {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
}

.flex-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.flex-row > *,
.flex-column > * {
  min-width: 0;
}

.list-unstyled {
  list-style: none;
  padding-inline-start: 0;
  margin-block-end: 0;
}

.list-unstyled > li {
  margin-block-end: 0;
}

.content-list {
  list-style: disc;
  padding-inline-start: var(--space-md);
  margin-block-end: var(--space-sm);
}

.content-list > li {
  margin-block-end: var(--space-xs);
}

.content-list > li:last-child {
  margin-block-end: 0;
}

.content-list > li::marker {
  color: var(--color-brick);
}

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

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  z-index: 1000;
  background-color: var(--color-petrol);
  color: var(--color-white);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-sm);
  color: var(--color-white);
}

:where(h1, h2, h3, h4, h5, h6, p, ul, ol, blockquote, figure):last-child {
  margin-block-end: 0;
}

@media (max-width: 48rem) {
  :root {
    --container-padding: var(--space-sm);
  }

  .container {
    padding-inline: var(--space-sm);
  }

  .surface-panel,
  .surface-panel-accent,
  .surface-panel-dark {
    padding: var(--space-sm);
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}