:root {
  --color-primary: #1E4D5C;
  --color-secondary: #2F7A6B;
  --color-accent: #D98B3A;
  --color-background: #F6F3EE;
  --color-surface: #FFFFFF;
  --color-text: #172026;
  --color-text-muted: #4A5A63;
  --color-border: #D7D0C6;
  --font-sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  --font-serif: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(23, 32, 38, 0.08);
}

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

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  line-height: 1.6;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-background);
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.75;
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 1fr;
  grid-template-areas:
    "header"
    "main"
    "footer";
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-serif);
  line-height: 1.3;
  margin-bottom: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
}

h1 {
  font-size: 1.875rem;
  margin-bottom: 1.25rem;
}

h2 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.25rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1.25rem;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-position: 0% 100%;
  background-repeat: no-repeat;
  background-size: 0% 2px;
  transition: background-size 160ms ease, color 160ms ease;
}

a:hover {
  color: var(--color-secondary);
  background-size: 100% 2px;
}

a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

header {
  grid-area: header;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 1rem;
  box-shadow: var(--shadow);
}

header .site-name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

nav a {
  font-weight: 500;
  padding: 0.5rem 0;
  display: inline-block;
}

main {
  grid-area: main;
  padding: 2rem 1rem;
  max-width: 72rem;
  margin: 0 auto;
  width: 100%;
}

article,
section {
  background-color: var(--color-surface);
  padding: 1.5rem;
  margin-bottom: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}

aside {
  background-color: var(--color-surface);
  padding: 1.25rem;
  margin-bottom: 2rem;
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
  box-shadow: 0 4px 12px rgba(23, 32, 38, 0.06);
}

blockquote {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  color: var(--color-text-muted);
  padding: 1.5rem 1.5rem 1.5rem 2rem;
  margin: 2rem 0;
  border-left: 5px solid var(--color-accent);
  background-color: var(--color-background);
  font-style: italic;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.breadcrumbs {
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.breadcrumbs ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.breadcrumbs li:not(:last-child)::after {
  content: "›";
  margin-left: 0.5rem;
  color: var(--color-text-muted);
}

.breadcrumbs a {
  font-size: 0.9375rem;
  color: var(--color-primary);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(23, 32, 38, 0.05);
}

.table-wrapper {
  overflow-x: auto;
  margin: 1.5rem 0;
  border-radius: var(--radius);
}

caption {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
  text-align: left;
  padding: 1rem;
  background-color: var(--color-background);
  border-bottom: 2px solid var(--color-border);
}

thead {
  background-color: var(--color-primary);
  color: var(--color-surface);
}

th {
  padding: 0.875rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.9375rem;
  border-bottom: 2px solid var(--color-border);
}

td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

tbody tr:nth-child(even) {
  background-color: var(--color-background);
}

tbody tr:hover {
  background-color: rgba(30, 77, 92, 0.05);
  transition: background-color 160ms ease;
}

details {
  margin: 1.25rem 0;
  padding: 1rem 1.25rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  box-shadow: 0 2px 8px rgba(23, 32, 38, 0.04);
}

summary {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  padding: 0.5rem 0;
  list-style: none;
  display: flex;
  align-items: center;
  transition: color 160ms ease;
}

summary::-webkit-details-marker {
  display: none;
}

summary::before {
  content: "▸";
  margin-right: 0.75rem;
  color: var(--color-accent);
  font-size: 1.25rem;
  transition: transform 160ms ease;
}

details[open] summary::before {
  transform: rotate(90deg);
}

summary:hover {
  color: var(--color-secondary);
}

summary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

details[open] {
  padding-bottom: 1.25rem;
}

details p,
details ul,
details ol {
  margin-top: 1rem;
  padding-left: 2rem;
}

footer {
  grid-area: footer;
  background-color: var(--color-primary);
  color: var(--color-surface);
  padding: 2rem 1rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

footer p {
  margin: 0;
  font-size: 0.9375rem;
}

footer a {
  color: var(--color-surface);
  background-image: linear-gradient(currentColor, currentColor);
}

footer a:hover {
  color: var(--color-accent);
}

ul,
ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
  html {
    font-size: 106.25%;
  }

  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.375rem;
  }

  header {
    padding: 1.5rem 2rem;
  }

  main {
    padding: 2.5rem 2rem;
    max-width: 80rem;
  }

  article,
  section {
    padding: 2rem;
  }

  aside {
    padding: 1.5rem;
  }

  th,
  td {
    padding: 1rem 1.25rem;
  }

  footer {
    padding: 2.5rem 2rem;
  }
}

@media (min-width: 1024px) {
  body {
    grid-template-areas:
      "header header"
      "main aside"
      "footer footer";
    grid-template-columns: 1fr 22rem;
    column-gap: 2rem;
  }

  header nav ul {
    flex-direction: row;
    gap: 2rem;
    justify-content: flex-start;
  }

  header .site-name {
    margin-bottom: 1.25rem;
  }

  main {
    padding: 3rem 2rem 3rem 3rem;
  }

  aside {
    grid-area: aside;
    margin-top: 3rem;
    margin-right: 3rem;
    position: sticky;
    top: 2rem;
    align-self: start;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
  }

  article,
  section {
    padding: 2.5rem;
  }
}

@media print {
  body {
    background-color: white;
    color: black;
  }

  header,
  footer,
  nav,
  aside {
    display: none;
  }

  main {
    max-width: 100%;
    padding: 0;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  article,
  section {
    box-shadow: none;
    border: none;
    page-break-inside: avoid;
  }

  h1,
  h2,
  h3 {
    page-break-after: avoid;
  }
}

@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;
  }

  a {
    transition: none;
    background-size: 100% 2px;
  }

  summary::before {
    transition: none;
  }

  tbody tr:hover {
    transition: none;
  }
}

*:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}