:root {
  --color-navy-deep: #17354B;
  --color-cream-paper: #F5EFE5;
  --color-sea-mist: #739AA3;
  --color-terracotta: #C97962;
  --color-ink-charcoal: #17212A;
  --color-brass-gold: #B49A69;

  --color-background: var(--color-cream-paper);
  --color-surface: var(--color-cream-paper);
  --color-surface-dark: var(--color-navy-deep);
  --color-text: var(--color-ink-charcoal);
  --color-text-inverse: var(--color-cream-paper);
  --color-accent: var(--color-terracotta);
  --color-accent-secondary: var(--color-sea-mist);
  --color-accent-tertiary: var(--color-brass-gold);
  --color-border: var(--color-sea-mist);
  --color-border-accent: var(--color-brass-gold);

  --font-heading: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: "Source Serif 4", Georgia, "Times New Roman", serif;

  --text-display: clamp(2.5rem, 6vw, 4.5rem);
  --text-h1: clamp(2rem, 4vw, 3rem);
  --text-h2: clamp(1.5rem, 3vw, 2.25rem);
  --text-h3: clamp(1.25rem, 2vw, 1.5rem);
  --text-body: 1.125rem;
  --text-caption: 0.875rem;

  --leading-display: 1.1;
  --leading-h1: 1.2;
  --leading-h2: 1.3;
  --leading-h3: 1.4;
  --leading-body: 1.7;
  --leading-caption: 1.5;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 96px;
  --space-8: 128px;

  --container-max: 1200px;
  --container-narrow: 680px;

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

  --shadow-hover: 0 2px 8px rgba(23, 53, 75, 0.12);

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-text);
  background-color: var(--color-background);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-navy-deep);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-navy-deep);
  line-height: var(--leading-h2);
  margin-block-end: var(--space-3);
}

h1 {
  font-size: var(--text-h1);
  line-height: var(--leading-h1);
}

h2 {
  font-size: var(--text-h2);
  line-height: var(--leading-h2);
}

h3 {
  font-size: var(--text-h3);
  line-height: var(--leading-h3);
}

p {
  margin-block-end: var(--space-3);
  line-height: var(--leading-body);
}

p:last-child {
  margin-block-end: 0;
}

ul,
ol {
  margin-block-end: var(--space-3);
  padding-inline-start: var(--space-4);
}

ul:last-child,
ol:last-child {
  margin-block-end: 0;
}

blockquote {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: var(--text-h3);
  line-height: var(--leading-h3);
  color: var(--color-accent);
  margin-block-end: var(--space-4);
  padding-inline-start: var(--space-4);
  border-inline-start: 2px solid var(--color-accent-tertiary);
}

blockquote:last-child {
  margin-block-end: 0;
}

figure {
  margin-block-end: var(--space-4);
}

figure:last-child {
  margin-block-end: 0;
}

figcaption {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  font-variant-caps: all-small-caps;
  letter-spacing: 0.05em;
  color: var(--color-sea-mist);
  margin-block-start: var(--space-2);
}

hr {
  border: none;
  border-block-start: 1px solid var(--color-border-accent);
  margin-block: var(--space-5);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-block-end: var(--space-4);
}

table:last-child {
  margin-block-end: 0;
}

th,
td {
  text-align: start;
  padding: var(--space-2) var(--space-3);
  border-block-end: 1px solid var(--color-border);
}

th {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-navy-deep);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.surface-dark {
  background-color: var(--color-surface-dark);
  color: var(--color-text-inverse);
}

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

.surface-dark a {
  color: var(--color-accent-tertiary);
}

.surface-dark a:hover {
  color: var(--color-cream-paper);
}

.surface-dark figcaption {
  color: var(--color-sea-mist);
}

.overline {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  font-variant-caps: all-small-caps;
  letter-spacing: 0.08em;
  color: var(--color-accent-tertiary);
  margin-block-end: var(--space-2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding-inline: var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-body);
  font-weight: 600;
  line-height: 1;
  color: var(--color-cream-paper);
  background-color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:hover {
  background-color: var(--color-navy-deep);
  border-color: var(--color-navy-deep);
  color: var(--color-cream-paper);
  box-shadow: var(--shadow-hover);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-secondary {
  background-color: transparent;
  border-color: var(--color-sea-mist);
}

.btn-secondary:hover {
  background-color: var(--color-sea-mist);
  border-color: var(--color-sea-mist);
  color: var(--color-cream-paper);
}

.btn-tertiary {
  background-color: transparent;
  color: var(--color-accent-tertiary);
  border-color: var(--color-accent-tertiary);
}

.btn-tertiary:hover {
  background-color: var(--color-accent-tertiary);
  border-color: var(--color-accent-tertiary);
  color: var(--color-navy-deep);
}

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-none);
  padding: var(--space-4);
}

.card > :last-child {
  margin-block-end: 0;
}

.card-sm {
  border-radius: var(--radius-sm);
}

.card-md {
  border-radius: var(--radius-md);
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: var(--space-3);
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  font-variant-caps: all-small-caps;
  letter-spacing: 0.05em;
  color: var(--color-navy-deep);
  border: 1px solid var(--color-border-accent);
  border-radius: var(--radius-sm);
  background-color: transparent;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.tag:hover {
  background-color: var(--color-accent-tertiary);
  border-color: var(--color-accent-tertiary);
  color: var(--color-cream-paper);
}

.flex {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

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

.flex-nowrap {
  flex-wrap: nowrap;
}

.flex-col {
  flex-direction: column;
}

.flex-center {
  align-items: center;
  justify-content: center;
}

.flex-between {
  align-items: center;
  justify-content: space-between;
}

.flex-start {
  align-items: flex-start;
  justify-content: flex-start;
}

.flex-end {
  align-items: flex-end;
  justify-content: flex-end;
}

.flex-1 {
  flex: 1 1 0%;
  min-width: 0;
}

.flex-auto {
  flex: 0 0 auto;
}

.flex-grow {
  flex: 1 1 auto;
  min-width: 0;
}

.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: var(--space-2);
  left: var(--space-2);
  z-index: 9999;
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-navy-deep);
  color: var(--color-cream-paper);
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateY(0);
}

@media (max-width: 768px) {
  .container,
  h1 {
    font-size: clamp(1.75rem, 5vw, 2.25rem);
  }

  h2 {
    font-size: clamp(1.375rem, 4vw, 1.75rem);
  }

  h3 {
    font-size: clamp(1.125rem, 3vw, 1.375rem);
  }

  blockquote {
    font-size: clamp(1.125rem, 3vw, 1.375rem);
    padding-inline-start: var(--space-3);
  }
}

@media (max-width: 480px) {
  .container,
  .flex {
    gap: var(--space-2);
  }
}