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

:root {
  --color-primary: #57713b;
  --color-secondary: #3a4d25;
  --color-accent: #c8daa8;
  --color-bg: #fcfdf8;
  --color-surface: #f4f7ee;
  --color-text: #252e18;
  --color-text-muted: #6e7d5a;
  --color-border: #d0d8c2;
  --font-main: 'Courier New', 'Lucida Console', Monaco, monospace;
  --max-width: 1100px;
  --radius: 16px;
  --shadow-sm: 4px 4px 12px rgba(87, 113, 59, 0.08);
  --shadow-md: 6px 6px 20px rgba(87, 113, 59, 0.12);
  --shadow-lg: 10px 10px 30px rgba(87, 113, 59, 0.16);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  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: 1.3;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: 0.75em;
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  margin-top: 1.5em;
}

h3 {
  font-size: 1.5rem;
  margin-top: 1.3em;
}

h4 {
  font-size: 1.25rem;
  margin-top: 1.2em;
}

h5 {
  font-size: 1.1rem;
}

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

p {
  margin-bottom: 1.25em;
}

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;
}

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

a:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

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

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

blockquote {
  margin: 2em 0;
  padding: 1.5em 1.5em 1.5em 2em;
  background-color: var(--color-surface);
  border-left: 6px solid var(--color-primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: var(--shadow-sm);
  position: relative;
  transform: translateX(8px);
}

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

blockquote::before {
  content: '';
  position: absolute;
  left: -3px;
  top: 12px;
  width: 12px;
  height: 12px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

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

.site-header {
  background-color: var(--color-surface);
  padding: 1.5rem 1rem;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 2px solid var(--color-border);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-header h1 {
  margin: 0;
  font-size: 1.75rem;
}

.site-header a {
  text-decoration: none;
  color: var(--color-primary);
}

.site-nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.site-nav a {
  padding: 0.6rem 1.2rem;
  background-color: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
  transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.site-nav a:nth-child(even) {
  transform: translateY(-3px);
}

.site-nav a:nth-child(odd) {
  transform: translateY(3px);
}

.site-nav a:hover {
  background-color: var(--color-accent);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(0);
}

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

.site-main {
  flex: 1;
  padding: 3rem 1rem;
}

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

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding: 0.75rem 1rem;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
  transform: translateX(-12px);
}

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

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

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

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

.card::after {
  content: '';
  position: absolute;
  top: -8px;
  right: -8px;
  width: 24px;
  height: 24px;
  background-color: var(--color-accent);
  border-radius: 50%;
  z-index: -1;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card:nth-child(odd) {
  transform: translateX(12px);
}

.card:nth-child(even) {
  transform: translateX(-12px);
}

.card:nth-child(odd):hover {
  transform: translateX(12px) translateY(-2px);
}

.card:nth-child(even):hover {
  transform: translateX(-12px) translateY(-2px);
}

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--color-border);
}

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

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-bg);
}

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

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

details {
  margin: 1.5rem 0;
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease;
}

details:hover {
  box-shadow: var(--shadow-md);
}

details[open] {
  box-shadow: var(--shadow-lg);
}

summary {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-bg);
  transition: background-color 0.2s ease, color 0.2s ease;
  user-select: none;
  list-style: none;
  position: relative;
}

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

summary::after {
  content: '+';
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  font-weight: 700;
  transition: transform 0.2s ease;
}

details[open] summary::after {
  content: '−';
  transform: translateY(-50%) rotate(180deg);
}

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

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

details div {
  padding: 1.5rem;
  border-top: 2px solid var(--color-border);
  animation: slideDown 0.2s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.site-footer {
  background-color: var(--color-secondary);
  color: var(--color-accent);
  padding: 3rem 1rem 2rem;
  margin-top: 4rem;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -20px;
  left: 0;
  right: 0;
  height: 20px;
  background: linear-gradient(135deg, var(--color-primary) 25%, transparent 25%),
              linear-gradient(225deg, var(--color-primary) 25%, transparent 25%);
  background-size: 40px 40px;
  background-position: 0 0, 20px 0;
}

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

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

.site-footer .container {
  display: grid;
  gap: 2rem;
}

.site-footer p {
  font-size: 0.9rem;
  opacity: 0.9;
}

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

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  h3 {
    font-size: 1.75rem;
  }

  .site-header {
    padding: 2rem 1.5rem;
  }

  .site-header h1 {
    font-size: 2rem;
  }

  .site-nav {
    gap: 1rem;
  }

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

  .card {
    padding: 2.5rem;
  }

  .site-footer {
    padding: 4rem 2rem 3rem;
  }

  .site-footer .container {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (min-width: 1024px) {
  .site-header .container {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 2rem;
  }

  .site-nav {
    justify-content: flex-end;
    gap: 1.25rem;
  }

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

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

  .card {
    padding: 3rem;
  }

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

  table th,
  table td {
    padding: 1.25rem;
  }
}

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

  html {
    scroll-behavior: auto;
  }

  .card:nth-child(odd),
  .card:nth-child(even) {
    transform: none;
  }

  .card:nth-child(odd):hover,
  .card:nth-child(even):hover {
    transform: none;
  }

  .site-nav a:nth-child(even),
  .site-nav a:nth-child(odd) {
    transform: none;
  }

  .breadcrumbs {
    transform: none;
  }

  blockquote {
    transform: none;
  }
}

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

  body {
    background-color: white;
    color: black;
  }

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

  .container {
    max-width: 100%;
  }

  .card {
    border: 1px solid black;
    box-shadow: none;
    page-break-inside: avoid;
    transform: none !important;
  }

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

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }

  table {
    border: 1px solid black;
    box-shadow: none;
  }

  details {
    border: 1px solid black;
    box-shadow: none;
  }

  details summary::after {
    display: none;
  }

  blockquote {
    border-left: 4px solid black;
    box-shadow: none;
  }
}