:root {
  --color-primary: #1B2A6B;
  --color-secondary: #0E6F6A;
  --color-accent: #E24A2A;
  --color-background: #F6F4EF;
  --color-surface: #FFFFFF;
  --color-text: #121418;
  --color-text-muted: #4B5563;
  --color-border: #D7D2C6;
  --bp-radius: 2px;
  --bp-space: 1.5rem;
  --bp-maxw: 1200px;
  --font-stack: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, 'Noto Sans', 'Liberation Sans', sans-serif;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.1rem);
  line-height: 1.55;
  color: var(--color-text);
  background-color: var(--color-background);
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr auto;
  grid-template-areas:
    "header"
    "main"
    "footer";
  min-height: 100vh;
}

header {
  grid-area: header;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--bp-space);
}

header .header-inner {
  max-width: var(--bp-maxw);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

header .site-name {
  font-size: clamp(1.5rem, 1.3rem + 0.8vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
  text-decoration: none;
}

header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

header nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

header nav a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

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

main {
  grid-area: main;
  max-width: var(--bp-maxw);
  width: 100%;
  margin: 0 auto;
  padding: calc(var(--bp-space) * 1.5) var(--bp-space);
}

footer {
  grid-area: footer;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--bp-space);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

h1 {
  font-size: clamp(2rem, 1.7rem + 1.2vw, 2.4rem);
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: calc(var(--bp-space) * 1.5);
}

h2 {
  font-size: clamp(1.4rem, 1.25rem + 0.6vw, 1.8rem);
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: calc(var(--bp-space) * 2);
  margin-bottom: var(--bp-space);
}

h3 {
  font-size: clamp(1.15rem, 1.05rem + 0.4vw, 1.35rem);
  line-height: 1.3;
  font-weight: 600;
  color: var(--color-secondary);
  margin-top: calc(var(--bp-space) * 1.5);
  margin-bottom: calc(var(--bp-space) * 0.75);
}

p {
  margin-bottom: var(--bp-space);
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
  color: var(--color-secondary);
  text-decoration-color: var(--color-accent);
}

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

article, section {
  margin-bottom: calc(var(--bp-space) * 2);
}

aside {
  background-color: var(--color-surface);
  border-left: 4px solid var(--color-secondary);
  padding: var(--bp-space);
  margin: calc(var(--bp-space) * 1.5) 0;
  border-radius: var(--bp-radius);
}

aside h3 {
  margin-top: 0;
}

blockquote {
  background-color: var(--color-surface);
  border-left: 4px solid var(--color-accent);
  padding: var(--bp-space);
  margin: calc(var(--bp-space) * 1.5) 0;
  font-style: italic;
  color: var(--color-text-muted);
}

blockquote p:last-child {
  margin-bottom: 0;
}

nav[aria-label="breadcrumbs"] {
  margin-bottom: calc(var(--bp-space) * 1.5);
  font-size: 0.9rem;
}

nav[aria-label="breadcrumbs"] ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

nav[aria-label="breadcrumbs"] li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

nav[aria-label="breadcrumbs"] li:not(:last-child)::after {
  content: "›";
  color: var(--color-text-muted);
}

nav[aria-label="breadcrumbs"] a {
  text-decoration: none;
  color: var(--color-text-muted);
}

nav[aria-label="breadcrumbs"] a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

ol, ul {
  margin-left: 1.5rem;
  margin-bottom: var(--bp-space);
}

li {
  margin-bottom: 0.5rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: calc(var(--bp-space) * 1.5) 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 0.95rem;
}

caption {
  text-align: left;
  font-weight: 600;
  padding: 0.75rem;
  background-color: var(--color-primary);
  color: var(--color-surface);
  font-size: 1rem;
}

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

th {
  text-align: left;
  padding: 0.75rem;
  font-weight: 600;
  border-bottom: 2px solid var(--color-border);
}

td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

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

tbody tr:hover {
  background-color: rgba(27, 42, 107, 0.05);
  transition: background-color 0.2s ease;
}

details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--bp-radius);
  margin-bottom: 1rem;
  padding: 0;
}

summary {
  padding: var(--bp-space);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  color: var(--color-primary);
  transition: background-color 0.2s ease, color 0.2s ease;
  user-select: none;
}

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

summary::before {
  content: "▸ ";
  display: inline-block;
  margin-right: 0.5rem;
  transition: transform 0.2s ease;
}

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

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

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

details[open] summary {
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--bp-space);
}

details div {
  padding: 0 var(--bp-space) var(--bp-space) var(--bp-space);
}

details p:last-child {
  margin-bottom: 0;
}

@media (min-width: 768px) {
  header .header-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  main {
    padding: calc(var(--bp-space) * 2) var(--bp-space);
  }

  table {
    font-size: 1rem;
  }

  thead {
    position: sticky;
    top: 0;
    z-index: 10;
  }

  aside {
    margin: calc(var(--bp-space) * 2) 0;
  }
}

@media (min-width: 1024px) {
  body {
    grid-template-columns: 1fr minmax(auto, var(--bp-maxw)) 1fr;
    grid-template-areas:
      "header header header"
      ". main ."
      "footer footer footer";
  }

  main {
    padding: calc(var(--bp-space) * 2.5) 0;
  }

  th, td {
    padding: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  html {
    scroll-behavior: auto;
  }

  summary::before {
    transition: none;
  }
}

@media print {
  body {
    background-color: white;
    color: black;
    font-size: 12pt;
    line-height: 1.5;
  }

  header, footer {
    border: none;
  }

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

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }

  details {
    border: 1px solid black;
  }

  details summary::before {
    content: "";
  }

  details[open] summary {
    border-bottom: 1px solid black;
  }

  thead {
    display: table-header-group;
  }

  tr, img {
    page-break-inside: avoid;
  }

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