* {
  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: 'Georgia', 'Times New Roman', 'Palatino', serif;
  --max-width: 1100px;
  --radius: 0px;
}

body {
  font-family: var(--font-main);
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
  border-bottom: 4px solid var(--color-primary);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2rem;
  margin-top: 2.5rem;
  position: relative;
  padding-left: 1rem;
}

h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: var(--color-primary);
}

h3 {
  font-size: 1.5rem;
  margin-top: 2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 1.25rem;
}

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

h5 {
  font-size: 1.1rem;
  margin-top: 1.25rem;
}

h6 {
  font-size: 1rem;
  margin-top: 1rem;
  color: var(--color-text-muted);
}

p {
  margin-bottom: 1.25rem;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

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

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

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

blockquote {
  margin: 2rem 0;
  padding: 1.5rem;
  background-color: var(--color-surface);
  border-left: 6px solid var(--color-primary);
  font-style: italic;
  color: var(--color-text-muted);
  position: relative;
}

blockquote::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 60px;
  height: 4px;
  background-color: var(--color-accent);
}

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

.site-header {
  background-color: var(--color-secondary);
  color: var(--color-bg);
  padding: 2rem 1.5rem;
  border-bottom: 6px solid var(--color-primary);
  position: relative;
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 200px;
  height: 6px;
  background-color: var(--color-accent);
}

.site-header h1 {
  color: var(--color-bg);
  border-bottom: none;
  margin: 0;
  font-size: 2.25rem;
  font-family: 'Courier New', monospace;
  letter-spacing: 0.1em;
}

.site-nav {
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  padding: 0;
}

.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;
}

.site-nav a {
  display: block;
  padding: 1rem 1.5rem;
  color: var(--color-text);
  border-bottom: none;
  border-right: 2px solid var(--color-border);
  font-family: 'Courier New', monospace;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  transition: background-color 0.2s ease, color 0.2s ease;
  text-align: center;
}

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

.site-nav a:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: -3px;
}

.site-main {
  flex: 1;
  padding: 3rem 1.5rem;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
}

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

.breadcrumbs {
  margin-bottom: 2rem;
  padding: 0.75rem 1rem;
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

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

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

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

.card {
  background-color: var(--color-surface);
  border: 3px solid var(--color-border);
  padding: 2rem;
  margin-bottom: 2rem;
  position: relative;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
}

.card:hover {
  border-color: var(--color-primary);
  box-shadow: 8px 8px 0 var(--color-accent);
}

.card h2 {
  margin-top: 0;
}

.card h3 {
  margin-top: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background-color: var(--color-bg);
  border: 3px solid var(--color-border);
  font-size: 0.95rem;
}

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

table th {
  padding: 1rem;
  text-align: left;
  font-weight: 700;
  border-right: 2px solid var(--color-primary);
  font-family: 'Courier New', monospace;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}

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

table td {
  padding: 1rem;
  border-bottom: 2px solid var(--color-border);
  border-right: 2px solid var(--color-border);
}

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

table tbody tr {
  transition: background-color 0.2s ease;
}

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

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

details {
  margin: 1.5rem 0;
  border: 3px solid var(--color-border);
  background-color: var(--color-surface);
}

summary {
  padding: 1.25rem;
  cursor: pointer;
  font-weight: 700;
  color: var(--color-secondary);
  background-color: var(--color-surface);
  border-bottom: 3px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease;
  font-family: 'Courier New', monospace;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.95rem;
  position: relative;
  padding-left: 2.5rem;
}

summary::before {
  content: '▶';
  position: absolute;
  left: 1rem;
  transition: transform 0.2s ease;
  color: var(--color-primary);
}

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

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

summary:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: -3px;
}

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

details div {
  padding: 1.5rem;
  background-color: var(--color-bg);
}

.site-footer {
  background-color: var(--color-secondary);
  color: var(--color-bg);
  padding: 3rem 1.5rem 2rem;
  margin-top: 4rem;
  border-top: 6px solid var(--color-primary);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -6px;
  right: 0;
  width: 200px;
  height: 6px;
  background-color: var(--color-accent);
}

.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);
}

.site-footer p {
  margin-bottom: 0.5rem;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

button, input[type="submit"], input[type="button"] {
  font-family: 'Courier New', monospace;
  font-size: 1rem;
  padding: 0.875rem 2rem;
  background-color: var(--color-primary);
  color: var(--color-bg);
  border: 3px solid var(--color-primary);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}

button:hover, input[type="submit"]:hover, input[type="button"]:hover {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  box-shadow: 6px 6px 0 var(--color-accent);
}

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

input[type="text"], input[type="email"], input[type="search"], textarea {
  font-family: var(--font-main);
  font-size: 1rem;
  padding: 0.875rem;
  border: 3px solid var(--color-border);
  background-color: var(--color-bg);
  color: var(--color-text);
  width: 100%;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus, input[type="email"]:focus, input[type="search"]:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 4px 4px 0 var(--color-accent);
}

ul, ol {
  margin: 1.5rem 0;
  padding-left: 2rem;
}

li {
  margin-bottom: 0.5rem;
}

ul ul, ol ol, ul ol, ol ul {
  margin: 0.5rem 0;
}

code {
  font-family: 'Courier New', monospace;
  background-color: var(--color-surface);
  padding: 0.2rem 0.5rem;
  border: 2px solid var(--color-border);
  font-size: 0.9em;
  color: var(--color-secondary);
}

pre {
  font-family: 'Courier New', monospace;
  background-color: var(--color-surface);
  padding: 1.5rem;
  border: 3px solid var(--color-border);
  border-left: 6px solid var(--color-primary);
  overflow-x: auto;
  margin: 2rem 0;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--color-text);
}

hr {
  border: none;
  height: 4px;
  background-color: var(--color-border);
  margin: 3rem 0;
  position: relative;
}

hr::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100px;
  height: 4px;
  background-color: var(--color-primary);
}

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

  h2 {
    font-size: 2.25rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  .site-header {
    padding: 3rem 2rem;
  }

  .site-header h1 {
    font-size: 2.75rem;
  }

  .site-main {
    padding: 4rem 2rem;
  }

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

  .card {
    padding: 2.5rem;
  }

  .container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }

  .container > * {
    grid-column: span 2;
  }
}

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

  h2 {
    font-size: 2.5rem;
  }

  .site-header {
    padding: 3.5rem 2rem;
  }

  .site-header h1 {
    font-size: 3rem;
  }

  .site-main {
    padding: 5rem 2rem;
  }

  .container {
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
  }
}

@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 var(--color-text);
  }

  .site-main {
    max-width: 100%;
    padding: 1rem;
  }

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

  .card {
    border: 1px solid var(--color-text);
    box-shadow: none;
    page-break-inside: avoid;
  }

  button, input {
    display: none;
  }
}