:root {
  --color-primary: #2B3A67;
  --color-secondary: #6D3B47;
  --color-accent: #C07A2B;
  --color-background: #FBF7F0;
  --color-surface: #FFFFFF;
  --color-text: #1A1B1E;
  --color-text-muted: #4B5563;
  --color-border: #D7D0C6;
  --radius: 0.25rem;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --space: 1rem;
  --maxw: 65ch;
  --maxw-wide: 90rem;
}

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

*:focus {
  outline: none;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 100%;
}

h1 {
  font-size: clamp(1.75rem, 4vw + 1rem, 2.5rem);
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.5rem, 3vw + 0.75rem, 2rem);
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

h3 {
  font-size: clamp(1.25rem, 2vw + 0.5rem, 1.5rem);
  line-height: 1.4;
  font-weight: 600;
  color: var(--color-secondary);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
  max-width: var(--maxw);
}

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-accent);
  text-decoration-color: var(--color-accent);
}

a:active {
  color: var(--color-secondary);
}

header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem var(--space);
  box-shadow: var(--shadow);
}

header .header-inner {
  max-width: var(--maxw-wide);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

header .site-name {
  font-size: clamp(1.25rem, 2vw + 0.5rem, 1.5rem);
  font-weight: 700;
  color: var(--color-primary);
}

header .site-name a {
  text-decoration: none;
  color: inherit;
}

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

nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
}

nav a {
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

nav[aria-label="Breadcrumb"] {
  padding: 1rem var(--space);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

nav[aria-label="Breadcrumb"] ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  max-width: var(--maxw-wide);
  margin: 0 auto;
  font-size: 0.875rem;
}

nav[aria-label="Breadcrumb"] li + li::before {
  content: "›";
  margin-right: 0.5rem;
  color: var(--color-text-muted);
}

nav[aria-label="Breadcrumb"] a {
  color: var(--color-text-muted);
}

nav[aria-label="Breadcrumb"] a:hover {
  color: var(--color-primary);
}

main {
  padding: 2rem var(--space);
  max-width: var(--maxw-wide);
  margin: 0 auto;
  width: 100%;
}

@media (min-width: 768px) {
  main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  main.has-aside {
    grid-template-columns: 1fr 18rem;
  }
}

article {
  background-color: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

aside {
  background-color: var(--color-surface);
  padding: 1.5rem;
  border-radius: var(--radius);
  border-left: 3px solid var(--color-accent);
  box-shadow: var(--shadow);
  align-self: start;
}

aside h2,
aside h3 {
  font-size: 1.125rem;
  margin-top: 0;
}

aside p {
  font-size: 0.9375rem;
  max-width: none;
}

aside dl {
  font-size: 0.9375rem;
}

aside dt {
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 0.75rem;
}

aside dd {
  margin-left: 0;
  margin-bottom: 0.5rem;
  color: var(--color-text-muted);
}

blockquote {
  margin: 2rem 0;
  padding: 1.5rem;
  background-color: rgba(192, 122, 43, 0.05);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  font-style: italic;
  color: var(--color-secondary);
  max-width: var(--maxw);
}

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

.table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

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

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

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

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

@media (min-width: 1024px) {
  thead {
    position: sticky;
    top: 0;
    z-index: 10;
  }
}

tbody tr {
  border-bottom: 1px solid var(--color-border);
  transition: background-color 0.2s ease;
}

tbody tr:nth-child(even) {
  background-color: rgba(43, 58, 103, 0.03);
}

tbody tr:hover {
  background-color: rgba(192, 122, 43, 0.08);
}

tbody td {
  padding: 0.875rem 1rem;
}

details {
  margin: 1.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-surface);
  overflow: hidden;
}

summary {
  padding: 1rem 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background-color 0.2s ease, color 0.2s ease;
  position: relative;
}

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: rgba(43, 58, 103, 0.05);
  color: var(--color-accent);
}

details[open] summary {
  border-bottom: 1px solid var(--color-border);
  background-color: rgba(43, 58, 103, 0.03);
}

details div,
details p {
  padding: 1rem 1.25rem;
}

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

ul:not(nav ul):not(nav ol),
ol:not(nav ul):not(nav ol) {
  margin: 1rem 0 1rem 1.5rem;
  max-width: var(--maxw);
}

li {
  margin-bottom: 0.5rem;
}

footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 2rem var(--space);
  margin-top: 3rem;
}

footer .footer-inner {
  max-width: var(--maxw-wide);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

footer nav ul {
  gap: 1rem;
}

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

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

section {
  margin: 2.5rem 0;
}

section:first-of-type {
  margin-top: 0;
}

.external-link::after {
  content: " ↗";
  font-size: 0.875em;
  opacity: 0.7;
}

@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;
  }
}

@media (min-width: 768px) {
  :root {
    --space: 1.5rem;
  }
  
  article {
    padding: 2.5rem;
  }
}

@media (min-width: 1024px) {
  :root {
    --space: 2rem;
  }
  
  article {
    padding: 3rem;
  }
  
  main {
    gap: 3rem;
  }
}

@media print {
  body {
    background-color: white;
    color: black;
  }
  
  header,
  footer,
  nav,
  aside {
    display: none;
  }
  
  main {
    max-width: 100%;
    padding: 0;
  }
  
  article {
    box-shadow: none;
    padding: 0;
  }
  
  a {
    text-decoration: underline;
    color: black;
  }
  
  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.875em;
  }
  
  details {
    border: none;
  }
  
  details summary {
    display: none;
  }
  
  details div,
  details p {
    padding: 0;
  }
  
  table {
    page-break-inside: avoid;
  }
  
  thead {
    display: table-header-group;
  }
}