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

* {
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #a0522d;
  --color-secondary: #6b3410;
  --color-accent: #f4c89a;
  --color-bg: #fffdf8;
  --color-surface: #fdf5eb;
  --color-text: #3e1d08;
  --color-text-muted: #8d7560;
  --color-border: #ddd0be;
  --font-main: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1100px;
  --radius: 0;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --border-width: 2px;
  --transition-speed: 0.2s;
}

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
  color: var(--color-secondary);
}

h1 {
  font-size: 3rem;
  border-bottom: var(--border-width) solid var(--color-secondary);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: 2.25rem;
  padding-left: var(--spacing-sm);
  border-left: 4px solid var(--color-primary);
}

h3 {
  font-size: 1.75rem;
  position: relative;
  padding-bottom: var(--spacing-xs);
}

h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: var(--border-width);
  background-color: var(--color-accent);
}

h4 {
  font-size: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
}

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--color-primary);
  transition: color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

a:hover {
  color: var(--color-secondary);
  border-bottom-color: var(--color-secondary);
}

a:focus-visible {
  outline: var(--border-width) solid var(--color-secondary);
  outline-offset: 2px;
}

strong {
  font-weight: 700;
  color: var(--color-secondary);
}

em {
  font-style: italic;
  color: var(--color-text);
}

blockquote {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-surface);
  border-left: 4px solid var(--color-primary);
  font-style: italic;
  color: var(--color-text-muted);
}

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

::selection {
  background-color: var(--color-accent);
  color: var(--color-secondary);
}

.site-header {
  background-color: var(--color-surface);
  border-bottom: var(--border-width) solid var(--color-border);
  padding: var(--spacing-lg) 0;
  position: relative;
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: calc(var(--border-width) * -1);
  left: 0;
  width: 200px;
  height: var(--border-width);
  background-color: var(--color-primary);
}

.site-header .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  align-items: center;
}

.site-nav {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

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

.site-nav li {
  flex: 1 1 auto;
  border-right: 1px solid var(--color-border);
}

.site-nav li:last-child {
  border-right: none;
}

.site-nav a {
  display: block;
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  text-transform: uppercase;
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
  text-align: center;
}

.site-nav a:hover {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

.site-main {
  min-height: 60vh;
  padding: var(--spacing-xl) 0;
}

.site-footer {
  background-color: var(--color-secondary);
  color: var(--color-accent);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-xl);
  border-top: 4px solid var(--color-primary);
}

.site-footer a {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.site-footer a:hover {
  color: var(--color-bg);
  border-bottom-color: var(--color-bg);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  list-style: none;
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 0.875rem;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.breadcrumbs li::after {
  content: '→';
  color: var(--color-text-muted);
  font-weight: 700;
}

.breadcrumbs li:last-child::after {
  content: '';
}

.breadcrumbs a {
  border: none;
  color: var(--color-primary);
}

.breadcrumbs li:last-child a {
  color: var(--color-text-muted);
  pointer-events: none;
}

.card {
  background-color: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  position: relative;
  transition: box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background-color: var(--color-primary);
}

.card:hover {
  border-color: var(--color-primary);
  box-shadow: 4px 4px 0 var(--color-accent);
}

.card h2, .card h3, .card h4 {
  border: none;
  padding: 0;
  margin-top: 0;
}

.card h2::after, .card h3::after {
  display: none;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  border: var(--border-width) solid var(--color-border);
  background-color: var(--color-bg);
}

thead {
  background-color: var(--color-secondary);
  color: var(--color-bg);
}

th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  border-bottom: var(--border-width) solid var(--color-primary);
}

td {
  padding: var(--spacing-md);
  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-surface);
}

tbody tr:hover {
  background-color: var(--color-accent);
}

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

details {
  margin: var(--spacing-lg) 0;
  border: var(--border-width) solid var(--color-border);
  background-color: var(--color-surface);
}

summary {
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: pointer;
  font-weight: 700;
  color: var(--color-secondary);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color var(--transition-speed) ease;
  position: relative;
}

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

summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  transition: transform var(--transition-speed) ease;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: var(--border-width) solid var(--color-primary);
}

details[open] summary::after {
  content: '−';
  transform: rotate(180deg);
}

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

summary:focus-visible {
  outline: var(--border-width) solid var(--color-secondary);
  outline-offset: -2px;
}

details[open] summary {
  border-bottom: var(--border-width) solid var(--color-primary);
}

details div {
  padding: var(--spacing-lg);
}

ul, ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

li {
  margin-bottom: var(--spacing-xs);
}

hr {
  border: none;
  height: var(--border-width);
  background-color: var(--color-border);
  margin: var(--spacing-xl) 0;
  position: relative;
}

hr::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 6px;
  background-color: var(--color-primary);
}

input, textarea, select {
  font-family: var(--font-main);
  font-size: 1rem;
  padding: var(--spacing-sm) var(--spacing-md);
  border: var(--border-width) solid var(--color-border);
  background-color: var(--color-bg);
  color: var(--color-text);
  width: 100%;
  transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-accent);
}

button {
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 700;
  padding: var(--spacing-md) var(--spacing-lg);
  border: var(--border-width) solid var(--color-primary);
  background-color: var(--color-primary);
  color: var(--color-bg);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  position: relative;
}

button:hover {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  box-shadow: 3px 3px 0 var(--color-accent);
}

button:focus-visible {
  outline: var(--border-width) solid var(--color-secondary);
  outline-offset: 2px;
}

button:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--color-accent);
}

@media (min-width: 768px) {
  h1 {
    font-size: 3.5rem;
  }

  h2 {
    font-size: 2.5rem;
  }

  h3 {
    font-size: 2rem;
  }

  .site-header .container {
    grid-template-columns: auto 1fr;
    gap: var(--spacing-lg);
  }

  .site-nav ul {
    justify-content: flex-start;
  }

  .site-nav li {
    flex: 0 1 auto;
  }

  .container {
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }

  .card {
    padding: var(--spacing-xl);
  }
}

@media (min-width: 1024px) {
  :root {
    --spacing-xs: 0.625rem;
    --spacing-sm: 1.25rem;
    --spacing-md: 2rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
  }

  h1 {
    font-size: 4rem;
  }

  .site-header {
    padding: var(--spacing-xl) 0;
  }

  .site-main {
    padding: calc(var(--spacing-xl) * 1.5) 0;
  }
}

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

  details summary::after {
    transition: none;
  }
}

@media print {
  .site-nav, .site-footer, button {
    display: none;
  }

  .site-header {
    border-bottom: 1px solid #000;
  }

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

  .container {
    max-width: 100%;
    padding: 0;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  .card {
    border: 1px solid #000;
    page-break-inside: avoid;
  }

  table {
    page-break-inside: avoid;
  }
}