* {
  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: 'Courier New', 'Lucida Console', Monaco, monospace;
  --max-width: 1100px;
  --radius: 0;
  --spacing-unit: 1rem;
  --border-width: 2px;
  --transition-speed: 0.2s;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image: 
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(160, 82, 45, 0.02) 2px,
      rgba(160, 82, 45, 0.02) 4px
    );
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: bold;
  line-height: 1.2;
  color: var(--color-secondary);
  margin-bottom: calc(var(--spacing-unit) * 0.75);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: var(--border-width) solid var(--color-border);
  padding-bottom: calc(var(--spacing-unit) * 0.5);
}

h1 {
  font-size: 2.5rem;
  border-bottom-width: 4px;
  border-bottom-color: var(--color-primary);
  margin-bottom: var(--spacing-unit);
}

h2 {
  font-size: 2rem;
  border-bottom-width: 3px;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.1rem;
}

h6 {
  font-size: 1rem;
}

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

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

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

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

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

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

blockquote {
  margin: calc(var(--spacing-unit) * 1.5) 0;
  padding: var(--spacing-unit);
  background-color: var(--color-surface);
  border-left: 4px solid var(--color-primary);
  border-top: var(--border-width) solid var(--color-border);
  border-bottom: var(--border-width) solid var(--color-border);
  position: relative;
  font-style: italic;
}

blockquote::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  background-color: var(--color-primary);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}

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

::selection {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

.site-header {
  background-color: var(--color-surface);
  border-bottom: 4px solid var(--color-primary);
  padding: calc(var(--spacing-unit) * 1.5) var(--spacing-unit);
  position: relative;
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-secondary),
    var(--color-secondary) 10px,
    var(--color-primary) 10px,
    var(--color-primary) 20px
  );
}

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

.site-header h1 {
  border: none;
  margin: 0;
  padding: 0;
  font-size: 2rem;
}

.site-nav {
  background-color: var(--color-secondary);
  padding: 0;
  border-bottom: var(--border-width) solid var(--color-border);
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  max-width: var(--max-width);
  margin: 0 auto;
}

.site-nav li {
  flex: 1 1 auto;
  min-width: 120px;
  border-right: var(--border-width) solid var(--color-primary);
}

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

.site-nav a {
  display: block;
  padding: calc(var(--spacing-unit) * 0.75) var(--spacing-unit);
  color: var(--color-bg);
  border: none;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: bold;
  position: relative;
}

.site-nav a::before {
  content: '▸';
  position: absolute;
  left: calc(var(--spacing-unit) * 0.5);
  opacity: 0;
  transition: opacity var(--transition-speed) ease, transform var(--transition-speed) ease;
  transform: translateX(-5px);
}

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

.site-nav a:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.site-nav a:focus-visible {
  outline-color: var(--color-accent);
  outline-offset: -4px;
}

.site-main {
  padding: calc(var(--spacing-unit) * 2) var(--spacing-unit);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

.breadcrumbs {
  margin-bottom: calc(var(--spacing-unit) * 1.5);
  padding: calc(var(--spacing-unit) * 0.5);
  background-color: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--spacing-unit) * 0.5);
  align-items: center;
  font-size: 0.9rem;
}

.breadcrumbs a {
  color: var(--color-text-muted);
  padding: 2px 6px;
}

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

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

.breadcrumbs span::before {
  content: '■';
  margin: 0 calc(var(--spacing-unit) * 0.25);
  font-size: 0.6em;
}

.breadcrumbs span:first-child::before {
  display: none;
}

.card {
  background-color: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  padding: calc(var(--spacing-unit) * 1.5);
  margin-bottom: calc(var(--spacing-unit) * 1.5);
  position: relative;
  transition: box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 30px 30px 0;
  border-color: transparent var(--color-primary) transparent transparent;
  opacity: 0.3;
}

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

.card h2:first-child,
.card h3:first-child,
.card h4:first-child {
  margin-top: 0;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-bottom: calc(var(--spacing-unit) * 1.5);
  border: var(--border-width) solid var(--color-border);
  background-color: var(--color-surface);
}

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

table th {
  padding: calc(var(--spacing-unit) * 0.75);
  text-align: left;
  font-weight: bold;
  border-bottom: var(--border-width) solid var(--color-primary);
  border-right: 1px solid rgba(255, 255, 255, 0.2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
}

table th:last-child {
  border-right: none;
}

table td {
  padding: calc(var(--spacing-unit) * 0.75);
  border-bottom: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  transition: background-color var(--transition-speed) ease;
}

table td:last-child {
  border-right: none;
}

table tbody tr:nth-child(even) {
  background-color: rgba(160, 82, 45, 0.05);
}

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

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

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

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

summary {
  padding: var(--spacing-unit);
  cursor: pointer;
  background-color: var(--color-surface);
  font-weight: bold;
  color: var(--color-secondary);
  user-select: none;
  list-style: none;
  position: relative;
  padding-left: calc(var(--spacing-unit) * 2.5);
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
  border-bottom: var(--border-width) solid transparent;
}

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

summary::before {
  content: '■';
  position: absolute;
  left: var(--spacing-unit);
  transition: transform var(--transition-speed) ease;
  font-size: 0.8em;
}

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

details[open] summary {
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-bottom-color: var(--color-secondary);
}

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

summary:focus-visible {
  outline: var(--border-width) solid var(--color-primary);
  outline-offset: -4px;
}

details > div {
  padding: var(--spacing-unit);
  border-top: var(--border-width) solid var(--color-border);
}

.site-footer {
  background-color: var(--color-secondary);
  color: var(--color-accent);
  padding: calc(var(--spacing-unit) * 2) var(--spacing-unit);
  border-top: 4px solid var(--color-primary);
  margin-top: calc(var(--spacing-unit) * 3);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-primary),
    var(--color-primary) 10px,
    var(--color-accent) 10px,
    var(--color-accent) 20px
  );
}

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

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

.site-footer p {
  margin-bottom: calc(var(--spacing-unit) * 0.5);
}

ul:not(.site-nav ul) {
  margin: 0 0 var(--spacing-unit) calc(var(--spacing-unit) * 1.5);
  list-style: none;
}

ul:not(.site-nav ul) li {
  margin-bottom: calc(var(--spacing-unit) * 0.5);
  position: relative;
  padding-left: calc(var(--spacing-unit) * 0.75);
}

ul:not(.site-nav ul) li::before {
  content: '■';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: 0.6em;
  top: 0.5em;
}

ol {
  margin: 0 0 var(--spacing-unit) calc(var(--spacing-unit) * 1.5);
  list-style: none;
  counter-reset: item;
}

ol li {
  margin-bottom: calc(var(--spacing-unit) * 0.5);
  position: relative;
  padding-left: calc(var(--spacing-unit) * 1.5);
  counter-increment: item;
}

ol li::before {
  content: counter(item);
  position: absolute;
  left: 0;
  color: var(--color-bg);
  background-color: var(--color-primary);
  width: 1.5em;
  height: 1.5em;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8em;
  font-weight: bold;
  border: var(--border-width) solid var(--color-secondary);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="search"],
textarea,
select {
  width: 100%;
  padding: calc(var(--spacing-unit) * 0.75);
  border: var(--border-width) solid var(--color-border);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-main);
  font-size: 1rem;
  transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  margin-bottom: var(--spacing-unit);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="search"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-accent);
}

button,
input[type="submit"],
input[type="button"] {
  padding: calc(var(--spacing-unit) * 0.75) calc(var(--spacing-unit) * 1.5);
  background-color: var(--color-primary);
  color: var(--color-bg);
  border: var(--border-width) solid var(--color-secondary);
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: background-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  position: relative;
}

button:hover,
input[type="submit"]:hover,
input[type="button"]:hover {
  background-color: var(--color-secondary);
  box-shadow: 4px 4px 0 0 var(--color-accent);
}

button:focus-visible,
input[type="submit"]:focus-visible,
input[type="button"]:focus-visible {
  outline: var(--border-width) solid var(--color-accent);
  outline-offset: 2px;
}

button:active,
input[type="submit"]:active,
input[type="button"]:active {
  box-shadow: 2px 2px 0 0 var(--color-accent);
  transform: translate(2px, 2px);
}

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

  h2 {
    font-size: 2.25rem;
  }

  h3 {
    font-size: 1.75rem;
  }

  .site-header .container {
    grid-template-columns: auto 1fr;
    gap: calc(var(--spacing-unit) * 2);
  }

  .site-header h1 {
    font-size: 2.5rem;
  }

  .site-nav ul {
    flex-wrap: nowrap;
  }

  .site-main {
    padding: calc(var(--spacing-unit) * 3) var(--spacing-unit);
  }

  .card {
    padding: calc(var(--spacing-unit) * 2);
  }
}

@media (min-width: 1024px) {
  body {
    font-size: 18px;
  }

  .site-header {
    padding: calc(var(--spacing-unit) * 2) var(--spacing-unit);
  }

  .site-nav a {
    padding: var(--spacing-unit) calc(var(--spacing-unit) * 1.5);
  }

  table th,
  table td {
    padding: var(--spacing-unit);
  }
}

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

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

  .site-header {
    border-bottom: 2px solid black;
  }

  .site-main {
    padding: 0;
  }

  .container {
    max-width: 100%;
  }

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

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

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