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

:root {
  --color-primary: #2d6a4f;
  --color-secondary: #1b4332;
  --color-accent: #d8f3dc;
  --color-bg: #ffffff;
  --color-surface: #f0faf4;
  --color-text: #1b3a2a;
  --color-text-muted: #5c7a6b;
  --color-border: #c8ddd0;
  --font-main: 'Trebuchet MS', 'Lucida Sans', 'Lucida Grande', sans-serif;
  --max-width: 1100px;
  --radius: 2px;
}

body {
  font-family: var(--font-main);
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.8em;
  color: var(--color-secondary);
  letter-spacing: -0.02em;
}

h1 {
  font-size: 2.8em;
  margin-bottom: 0.4em;
  text-shadow: 2px 2px 0 var(--color-accent);
  border-bottom: 4px solid var(--color-primary);
  padding-bottom: 0.3em;
  display: inline-block;
}

h2 {
  font-size: 2.2em;
  text-shadow: 1px 1px 0 var(--color-accent);
  border-left: 6px solid var(--color-primary);
  padding-left: 0.5em;
  margin-top: 1.5em;
}

h3 {
  font-size: 1.8em;
  color: var(--color-primary);
  outline: 2px solid var(--color-border);
  outline-offset: -8px;
  padding: 0.3em 0.5em;
  margin-top: 1.3em;
}

h4 {
  font-size: 1.5em;
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 0.2em;
  margin-top: 1.2em;
}

h5 {
  font-size: 1.3em;
  color: var(--color-primary);
  margin-top: 1em;
}

h6 {
  font-size: 1.1em;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-top: 1em;
}

p {
  margin-bottom: 1.2em;
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

a:hover {
  color: var(--color-secondary);
  background-color: var(--color-accent);
  text-shadow: 1px 1px 0 rgba(255, 255, 255, 0.5);
}

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

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

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

blockquote {
  margin: 2em 0;
  padding: 1.5em 2em;
  background-color: var(--color-surface);
  border-left: 6px solid var(--color-primary);
  font-size: 1.1em;
  font-style: italic;
  color: var(--color-text);
  box-shadow: 3px 3px 0 var(--color-border);
}

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

::selection {
  background-color: var(--color-primary);
  color: var(--color-bg);
  text-shadow: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  background-color: var(--color-secondary);
  color: var(--color-bg);
  padding: 2rem 0;
  border-bottom: 4px solid var(--color-primary);
  box-shadow: 0 4px 0 var(--color-accent);
}

.site-header h1 {
  color: var(--color-bg);
  text-shadow: 3px 3px 0 var(--color-primary);
  border-bottom: none;
  font-size: 2.5em;
  margin-bottom: 0.2em;
}

.site-header p {
  color: var(--color-accent);
  font-size: 1.1em;
  margin-bottom: 0;
  text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.3);
}

.site-nav {
  background-color: var(--color-primary);
  border-bottom: 2px solid var(--color-secondary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

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

.site-nav a {
  display: block;
  padding: 1rem 1.5rem;
  color: var(--color-bg);
  text-decoration: none;
  font-weight: 600;
  text-align: center;
  border-right: 2px solid var(--color-secondary);
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.site-nav a:hover {
  background-color: var(--color-secondary);
  color: var(--color-accent);
  text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.3);
  box-shadow: inset 0 -4px 0 var(--color-accent);
}

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

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

.site-main {
  min-height: 60vh;
  padding: 3rem 0;
}

.breadcrumbs {
  padding: 1rem 0;
  font-size: 0.9em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}

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

.breadcrumbs a:hover {
  color: var(--color-secondary);
  border-bottom-color: var(--color-secondary);
  background-color: transparent;
}

.breadcrumbs span {
  margin: 0 0.5em;
  color: var(--color-border);
}

.card {
  background-color: var(--color-surface);
  border: 3px solid var(--color-border);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 5px 5px 0 var(--color-accent);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

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

.card h2, .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);
  box-shadow: 4px 4px 0 var(--color-accent);
}

table thead {
  background-color: var(--color-primary);
  color: var(--color-bg);
  text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.2);
}

table th {
  padding: 1rem;
  text-align: left;
  font-weight: 700;
  border-bottom: 3px solid var(--color-secondary);
}

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

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);
  box-shadow: inset 3px 0 0 var(--color-primary);
}

details {
  margin: 1.5rem 0;
  border: 2px solid var(--color-border);
  background-color: var(--color-surface);
  box-shadow: 3px 3px 0 var(--color-border);
}

summary {
  padding: 1.2rem 1.5rem;
  cursor: pointer;
  font-weight: 700;
  color: var(--color-secondary);
  background-color: var(--color-accent);
  border-bottom: 2px solid var(--color-border);
  transition: background-color 0.2s ease, color 0.2s ease;
  list-style: none;
  outline: none;
}

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

summary::before {
  content: '▶ ';
  display: inline-block;
  transition: transform 0.2s ease;
  margin-right: 0.5em;
}

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

summary:hover {
  background-color: var(--color-primary);
  color: var(--color-bg);
  text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.2);
}

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

details[open] summary {
  border-bottom: 2px solid var(--color-primary);
}

details div {
  padding: 1.5rem;
}

.site-footer {
  background-color: var(--color-secondary);
  color: var(--color-accent);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
  border-top: 4px solid var(--color-primary);
  box-shadow: 0 -4px 0 var(--color-accent);
}

.site-footer a {
  color: var(--color-accent);
  text-decoration-color: var(--color-primary);
}

.site-footer a:hover {
  color: var(--color-bg);
  background-color: var(--color-primary);
  text-shadow: none;
}

.site-footer p {
  margin-bottom: 0.8em;
}

@media (min-width: 768px) {
  body {
    font-size: 18px;
  }

  h1 {
    font-size: 3.5em;
  }

  h2 {
    font-size: 2.6em;
  }

  h3 {
    font-size: 2em;
  }

  h4 {
    font-size: 1.6em;
  }

  .site-header {
    padding: 3rem 0;
  }

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

  .site-nav a {
    padding: 1.2rem 2rem;
  }

  .site-main {
    padding: 4rem 0;
  }

  .card {
    padding: 2.5rem;
  }

  .container {
    padding: 0 2rem;
  }

  blockquote {
    margin: 2.5em 2em;
    padding: 2em 2.5em;
  }

  table th,
  table td {
    padding: 1.2rem;
  }
}

@media (min-width: 1024px) {
  body {
    font-size: 19px;
  }

  h1 {
    font-size: 4em;
  }

  h2 {
    font-size: 3em;
  }

  h3 {
    font-size: 2.3em;
  }

  .site-header h1 {
    font-size: 3.5em;
  }

  .site-nav ul {
    justify-content: center;
  }

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

  .site-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .card {
    padding: 3rem;
  }

  blockquote {
    margin: 3em 3em;
    padding: 2.5em 3em;
    font-size: 1.15em;
  }
}

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

  summary::before {
    transition: none;
  }

  a,
  .site-nav a,
  .card,
  table tbody tr,
  summary,
  details {
    transition: none;
  }
}

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

  .site-header {
    border-bottom: 2px solid var(--color-text);
    box-shadow: none;
    padding: 1rem 0;
  }

  .site-main {
    padding: 1rem 0;
    max-width: 100%;
  }

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

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

  table {
    box-shadow: none;
    border: 1px solid var(--color-text);
  }

  blockquote {
    box-shadow: none;
    page-break-inside: avoid;
  }

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

  h1, h2, h3, h4, h5, h6 {
    page-break-after: avoid;
    text-shadow: none;
  }

  h1 {
    border-bottom: 2px solid var(--color-text);
  }

  details {
    box-shadow: none;
  }

  details summary {
    background-color: transparent;
  }

  details[open] {
    border: 1px solid var(--color-text);
  }
}