:root {
  --color-navy-900: #0a1f44;
  --color-navy-700: #1e3a5f;
  --color-ivory-50: #f5f0e6;
  --color-brass-500: #b8860b;
  --color-ocean-blue-400: #3a6b8c;
  --color-ink-900: #1a1a1a;
  --color-white: #ffffff;
  --color-border-light: rgba(10, 31, 68, 0.1);
  --color-border-dark: rgba(245, 240, 230, 0.2);
  --color-shadow-card: 0 2px 8px rgba(10, 31, 68, 0.08);
  --color-overlay-navy: rgba(10, 31, 68, 0.45);

  --font-heading: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: "Source Sans 3", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;

  --text-display-size: clamp(2.5rem, 5vw, 4rem);
  --text-display-line-height: 1.1;
  --text-display-weight: 700;
  --text-h1-size: clamp(2rem, 4vw, 3rem);
  --text-h1-line-height: 1.2;
  --text-h1-weight: 700;
  --text-h2-size: clamp(1.5rem, 3vw, 2.25rem);
  --text-h2-line-height: 1.3;
  --text-h2-weight: 600;
  --text-h3-size: clamp(1.25rem, 2vw, 1.75rem);
  --text-h3-line-height: 1.4;
  --text-h3-weight: 600;
  --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;
  --text-uppercase-letter-spacing: 0.06em;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  --container-max-width: 1200px;
  --container-padding: var(--space-lg);

  --radius-small: 4px;
  --radius-medium: 8px;
  --radius-large: 12px;

  --transition-fast: 0.2s ease;
}

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

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

body {
  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-900);
  background-color: var(--color-ivory-50);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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-brass-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-ocean-blue-400);
}

ul,
ol {
  list-style-position: inside;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--color-navy-900);
  line-height: 1.3;
  font-weight: var(--text-h2-weight);
  margin-block-end: var(--space-md);
}

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

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

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

h4,
h5,
h6 {
  font-size: var(--text-body-size);
  font-weight: 600;
}

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

blockquote {
  margin-block-end: var(--space-md);
  padding-inline-start: var(--space-lg);
  border-inline-start: 3px solid var(--color-brass-500);
  font-style: italic;
  color: var(--color-navy-700);
}

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

figcaption {
  font-size: var(--text-small-size);
  line-height: var(--text-small-line-height);
  color: var(--color-navy-700);
  margin-block-start: var(--space-xs);
}

address {
  font-style: normal;
}

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

hr {
  border: none;
  border-top: 1px solid var(--color-border-light);
  margin-block: var(--space-xl);
}

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

th,
td {
  padding: var(--space-sm) var(--space-md);
  text-align: start;
  border-bottom: 1px solid var(--color-border-light);
}

th {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-navy-900);
}

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

.section {
  padding-block: var(--space-2xl);
}

.section--spacious {
  padding-block: var(--space-3xl);
}

.surface-light {
  background-color: var(--color-ivory-50);
  color: var(--color-ink-900);
}

.surface-dark {
  background-color: var(--color-navy-900);
  color: var(--color-ivory-50);
}

.surface-dark h1,
.surface-dark h2,
.surface-dark h3,
.surface-dark h4,
.surface-dark h5,
.surface-dark h6 {
  color: var(--color-ivory-50);
}

.surface-dark p,
.surface-dark li,
.surface-dark blockquote {
  color: var(--color-ivory-50);
}

.surface-dark a {
  color: var(--color-brass-500);
}

.surface-dark a:hover {
  color: var(--color-ocean-blue-400);
}

.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-medium);
  padding: var(--space-lg);
  box-shadow: var(--color-shadow-card);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.card:hover {
  border-color: var(--color-brass-500);
  transform: translateY(-2px);
}

.card > :last-child,
.panel > :last-child,
.content-group > :last-child {
  margin-block-end: 0;
}

.card--dark {
  background-color: var(--color-navy-700);
  border-color: var(--color-border-dark);
  color: var(--color-ivory-50);
}

.card--dark h1,
.card--dark h2,
.card--dark h3,
.card--dark h4,
.card--dark h5,
.card--dark h6 {
  color: var(--color-ivory-50);
}

.card--dark p,
.card--dark li {
  color: var(--color-ivory-50);
}

.card--dark a {
  color: var(--color-brass-500);
}

.card--dark a:hover {
  color: var(--color-ocean-blue-400);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-body);
  font-size: var(--text-body-size);
  font-weight: 600;
  line-height: 1.5;
  text-align: center;
  border-radius: var(--radius-small);
  border: 1px solid transparent;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  min-height: 44px;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-brass-500);
  outline-offset: 2px;
}

.btn--primary {
  background-color: var(--color-brass-500);
  color: var(--color-white) !important;
  border-color: var(--color-brass-500);
}

.btn--primary:hover {
  background-color: var(--color-ocean-blue-400);
  border-color: var(--color-ocean-blue-400);
  color: var(--color-white) !important;
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-brass-500);
  border-color: var(--color-brass-500);
}

.btn--secondary:hover {
  background-color: var(--color-brass-500);
  color: var(--color-white);
}

.btn--outline-light {
  background-color: transparent;
  color: var(--color-ivory-50);
  border-color: var(--color-border-dark);
}

.btn--outline-light:hover {
  background-color: var(--color-ivory-50);
  color: var(--color-navy-900);
  border-color: var(--color-ivory-50);
}

.tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-small-size);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--text-uppercase-letter-spacing);
  color: var(--color-brass-500);
  border: 1px solid var(--color-brass-500);
  border-radius: var(--radius-small);
  background-color: transparent;
}

.section-header {
  margin-block-end: var(--space-xl);
}

.section-header__rule {
  width: 48px;
  height: 3px;
  background-color: var(--color-brass-500);
  margin-block-end: var(--space-sm);
}

.section-header__title {
  margin-block-end: var(--space-xs);
}

.section-header__subtitle {
  color: var(--color-navy-700);
  margin-block-end: 0;
}

.surface-dark .section-header__subtitle {
  color: var(--color-ivory-50);
  opacity: 0.85;
}

.image-overlay {
  position: relative;
}

.image-overlay::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10, 31, 68, 0.15), rgba(10, 31, 68, 0.55));
  pointer-events: none;
}

.image-overlay img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.aspect-16-9 {
  aspect-ratio: 16 / 9;
}

.aspect-4-3 {
  aspect-ratio: 4 / 3;
}

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

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

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

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

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

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

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

.flex--justify-between {
  justify-content: space-between;
}

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

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

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

.flex--gap-lg {
  gap: var(--space-lg);
}

.flex--gap-xl {
  gap: var(--space-xl);
}

.flex--gap-2xl {
  gap: var(--space-2xl);
}

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

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

.content-list {
  list-style: none;
  padding-inline-start: 0;
}

.content-list > li {
  margin-block-end: var(--space-md);
  padding-inline-start: var(--space-lg);
  position: relative;
}

.content-list > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-brass-500);
}

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

.content-list--check > li::before {
  content: "✓";
  background: none;
  color: var(--color-brass-500);
  font-weight: 700;
  top: 0;
  left: 0;
  width: auto;
  height: auto;
  border-radius: 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: -100%;
  left: var(--space-md);
  z-index: 9999;
  background-color: var(--color-navy-900);
  color: var(--color-ivory-50);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-small);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
}

@media (max-width: 768px) {
  .container {
    padding-inline: var(--space-md);
  }

  .section {
    padding-block: var(--space-xl);
  }

  .section--spacious {
    padding-block: var(--space-2xl);
  }

  .card {
    padding: var(--space-md);
  }

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

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

@media (max-width: 480px) {
  .container {
    padding-inline: var(--space-sm);
  }

  .section {
    padding-block: var(--space-lg);
  }

  .section--spacious {
    padding-block: var(--space-xl);
  }

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

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