:root {
  --color-primary: #1E3A5F;
  --color-secondary: #6B2D5C;
  --color-accent: #C97B2A;
  --color-background: #F6F2EA;
  --color-surface: #FFFFFF;
  --color-text: #14161A;
  --color-text-muted: #4B5563;
  --color-border: #D7D1C6;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(20, 22, 26, 0.10);
  --measure: 68ch;
  --transition-speed: 0.2s;
}

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

* {
  margin: 0;
  padding: 0;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-background);
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 1fr;
  grid-template-areas:
    "header"
    "main"
    "footer";
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-surface);
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  font-weight: 600;
  z-index: 1000;
  border-radius: 0 0 var(--radius) 0;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

header {
  grid-area: header;
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
}

.site-name {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: calc(var(--radius) / 2);
  transition: background-color var(--transition-speed), color var(--transition-speed);
  display: inline-block;
}

nav a:hover {
  background-color: var(--color-primary);
  color: var(--color-surface);
}

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

main {
  grid-area: main;
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1.25rem;
  width: 100%;
}

@media (min-width: 768px) {
  main {
    padding: 3rem 2rem;
  }
}

@media (min-width: 1024px) {
  body.has-aside {
    grid-template-areas:
      "header header"
      "main aside"
      "footer footer";
    grid-template-columns: 1fr 320px;
    gap: 0 2rem;
  }
  
  body.has-aside main {
    padding-right: 0;
  }
}

aside {
  grid-area: aside;
  padding: 2rem 1.25rem;
}

@media (min-width: 1024px) {
  aside {
    padding: 3rem 2rem 3rem 0;
  }
}

.content-wrapper {
  max-width: var(--measure);
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.2;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 2.5rem;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  line-height: 1.4;
  font-weight: 600;
  color: var(--color-secondary);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

h4 {
  font-size: clamp(1.125rem, 2.5vw, 1.375rem);
  line-height: 1.4;
  font-weight: 600;
  color: var(--color-text);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1.25rem;
  max-width: var(--measure);
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: color var(--transition-speed), text-decoration-color var(--transition-speed);
}

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

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

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 2rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.breadcrumbs a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-speed);
}

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

.breadcrumbs span {
  color: var(--color-border);
}

.breadcrumbs .current {
  color: var(--color-text);
  font-weight: 500;
}

section {
  margin-bottom: 3rem;
}

section:last-child {
  margin-bottom: 0;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1rem;
  min-width: 600px;
}

caption {
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-text);
  text-align: left;
  padding: 1.25rem 1.5rem;
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
}

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

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

th {
  text-align: left;
  padding: 1rem 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

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

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: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 2px 8px rgba(20, 22, 26, 0.05);
}

details[open] {
  border-color: var(--color-primary);
}

summary {
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: color var(--transition-speed);
  user-select: none;
}

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

summary::before {
  content: "▶";
  display: inline-block;
  font-size: 0.875rem;
  transition: transform var(--transition-speed);
  flex-shrink: 0;
  color: var(--color-accent);
}

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

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

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

details .answer {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text);
}

blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  background-color: var(--color-surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--color-text-muted);
  box-shadow: 0 2px 8px rgba(20, 22, 26, 0.05);
}

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

ul, ol {
  margin-bottom: 1.25rem;
  padding-left: 1.75rem;
  max-width: var(--measure);
}

li {
  margin-bottom: 0.5rem;
}

li::marker {
  color: var(--color-accent);
}

strong {
  font-weight: 600;
  color: var(--color-text);
}

em {
  font-style: italic;
}

code {
  font-family: "Courier New", Courier, monospace;
  background-color: var(--color-background);
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
  font-size: 0.9em;
  border: 1px solid var(--color-border);
}

hr {
  border: none;
  border-top: 2px solid var(--color-border);
  margin: 3rem 0;
  max-width: var(--measure);
}

footer {
  grid-area: footer;
  background-color: var(--color-primary);
  color: var(--color-surface);
  padding: 2rem 1.25rem;
  margin-top: 4rem;
  border-top: 4px solid var(--color-accent);
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  text-align: center;
}

footer p {
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  max-width: none;
}

footer a {
  color: var(--color-surface);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
}

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

.editorial-note {
  background-color: var(--color-surface);
  border: 2px solid var(--color-secondary);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 2rem 0;
  box-shadow: var(--shadow);
}

.editorial-note h3 {
  margin-top: 0;
  color: var(--color-secondary);
}

.button, button, input[type="submit"] {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-surface);
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-speed), transform var(--transition-speed);
  font-family: inherit;
}

.button:hover, button:hover, input[type="submit"]:hover {
  background-color: var(--color-accent);
  transform: translateY(-2px);
}

.button:active, button:active, input[type="submit"]:active {
  transform: translateY(0);
}

.button:focus-visible, button:focus-visible, input[type="submit"]:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

@media (min-width: 768px) {
  .header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .site-name {
    margin-bottom: 0;
  }
  
  nav ul {
    gap: 1rem 2rem;
  }
}

@media print {
  body {
    background-color: white;
    color: black;
    font-size: 12pt;
    line-height: 1.5;
  }
  
  header {
    position: static;
    box-shadow: none;
    border-bottom: 2px solid black;
  }
  
  nav, .skip-link, aside {
    display: none;
  }
  
  main {
    max-width: 100%;
    padding: 0;
  }
  
  a {
    color: black;
    text-decoration: underline;
  }
  
  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.9em;
  }
  
  details {
    border: 1px solid black;
  }
  
  details summary::before {
    content: "";
  }
  
  details[open] .answer {
    display: block;
  }
  
  table {
    border: 1px solid black;
  }
  
  th, td {
    border: 1px solid black;
  }
  
  thead {
    background-color: #ddd;
    color: black;
  }
  
  footer {
    background-color: white;
    color: black;
    border-top: 2px solid black;
    margin-top: 2rem;
  }
  
  .table-wrapper {
    box-shadow: none;
    overflow: visible;
  }
  
  h1, h2, h3 {
    page-break-after: avoid;
  }
  
  table, figure, img {
    page-break-inside: avoid;
  }
}