:root {
  --color-primary: #1E3A5F;
  --color-secondary: #2D6A73;
  --color-accent: #C24A3A;
  --color-background: #F6F7F4;
  --color-surface: #FFFFFF;
  --color-text: #0E1A24;
  --color-text-muted: #4C5B66;
  --color-border: #D6DAD6;
  --bp-radius: 14px;
  --bp-space: 1rem;
  --bp-max: 72rem;
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition-speed: 0.25s;
}

*, *::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-system);
  background-color: var(--color-background);
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.6;
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 1fr;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
  transition: color var(--transition-speed) ease, text-decoration-color var(--transition-speed) ease;
}

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

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--color-text);
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 1.875rem;
  letter-spacing: -0.015em;
  margin-top: 3rem;
  margin-bottom: 1.25rem;
}

h3 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

h4 {
  font-size: 1.25rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
}

ul, ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: calc(var(--bp-space) * 1.5) var(--bp-space);
}

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

header .site-name {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

header .site-name:hover {
  color: var(--color-secondary);
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

nav a {
  text-decoration: none;
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition-speed) ease;
}

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

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

main {
  max-width: var(--bp-max);
  margin: 0 auto;
  padding: calc(var(--bp-space) * 2) var(--bp-space);
  width: 100%;
}

.breadcrumbs {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.breadcrumbs a {
  color: var(--color-text-muted);
}

.breadcrumbs a:hover {
  color: var(--color-primary);
}

section {
  margin-bottom: calc(var(--bp-space) * 3);
}

blockquote {
  background-color: var(--color-surface);
  border-left: 4px solid var(--color-accent);
  padding: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--color-text-muted);
  border-radius: var(--bp-radius);
}

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

.table-container {
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: var(--bp-radius);
  border: 1px solid var(--color-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-surface);
  font-size: 0.9375rem;
}

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

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

th {
  text-align: left;
  padding: 0.875rem 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

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

tbody tr {
  transition: background-color var(--transition-speed) ease;
}

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

tbody tr:hover {
  background-color: rgba(30, 58, 95, 0.05);
}

tbody tr:last-child td {
  border-bottom: none;
}

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

summary {
  padding: 1.25rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  color: var(--color-primary);
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
  user-select: none;
}

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

summary::before {
  content: "▸";
  display: inline-block;
  margin-right: 0.75rem;
  transition: transform var(--transition-speed) 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 .details-content {
  padding: 0 1.25rem 1.25rem 1.25rem;
  color: var(--color-text);
}

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

footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: calc(var(--bp-space) * 1.5) var(--bp-space);
  margin-top: auto;
}

footer .footer-inner {
  max-width: var(--bp-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

footer a {
  color: var(--color-text-muted);
}

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

@media (min-width: 768px) {
  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  h3 {
    font-size: 1.75rem;
  }

  header .header-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  header .site-name {
    font-size: 1.75rem;
  }

  nav ul {
    gap: 2rem;
  }

  main {
    padding: calc(var(--bp-space) * 3) var(--bp-space);
  }

  footer .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }

  table {
    font-size: 1rem;
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: 3.5rem;
  }

  h2 {
    font-size: 2.5rem;
  }

  main {
    padding: calc(var(--bp-space) * 4) var(--bp-space);
  }
}

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

  summary::before {
    transition: none;
  }

  details[open] summary::before {
    transform: none;
  }
}

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

  header, footer, nav {
    display: none;
  }

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

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

  details {
    border: 1px solid black;
  }

  details summary {
    display: none;
  }

  details .details-content {
    display: block !important;
  }

  table {
    border: 1px solid black;
  }

  th, td {
    border: 1px solid black;
  }
}