* {
  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: 18px;
  --radius-small: 8px;
  --shadow-soft: 0 4px 16px rgba(87, 113, 59, 0.08);
  --shadow-hover: 0 8px 24px rgba(87, 113, 59, 0.14);
  --transition: 0.2s ease;
}

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: bold;
  color: var(--color-secondary);
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.5px;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2rem;
  margin-top: 2.5rem;
  margin-bottom: 1.25rem;
}

h3 {
  font-size: 1.5rem;
  margin-top: 2rem;
}

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-primary);
}

p {
  margin-bottom: 1.25rem;
}

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

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

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

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

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

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

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

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

.site-header {
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-bg) 100%);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

.site-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: var(--color-accent);
  opacity: 0.15;
  border-radius: 50%;
  z-index: 0;
}

.site-header > * {
  position: relative;
  z-index: 1;
}

.site-header h1 {
  color: var(--color-primary);
  margin: 0;
  font-size: 2.75rem;
  transform: translateX(-4px);
}

.site-header p {
  color: var(--color-text-muted);
  margin: 0.5rem 0 0 8px;
  font-size: 1.1rem;
}

.site-nav {
  background: var(--color-surface);
  padding: 0;
  box-shadow: var(--shadow-soft);
  position: sticky;
  top: 0;
  z-index: 100;
  margin-bottom: 3rem;
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.site-nav li {
  margin: 0;
}

.site-nav a {
  display: block;
  padding: 0.75rem 1.5rem;
  background: var(--color-bg);
  border-radius: var(--radius-small);
  border: 2px solid var(--color-border);
  color: var(--color-text);
  transition: all var(--transition);
  font-weight: bold;
  border-bottom: 2px solid var(--color-border);
}

.site-nav a:hover {
  background: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.site-main {
  min-height: 60vh;
  padding: 2rem 1.5rem;
}

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

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 2rem;
  padding: 1rem 1.5rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transform: translateX(-6px);
}

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

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

.breadcrumbs span {
  color: var(--color-border);
  user-select: none;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
}

.card:nth-child(odd) {
  transform: translateX(-8px);
}

.card:nth-child(even) {
  transform: translateX(8px);
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px) translateX(0);
}

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

.card::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 20px;
  right: 20px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius) var(--radius) 0 0;
}

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

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

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

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

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

tbody tr:nth-child(odd) {
  background: rgba(200, 218, 168, 0.08);
}

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

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

details {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-small);
  padding: 0;
  margin-bottom: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: all var(--transition);
}

details:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-hover);
}

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

summary {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-weight: bold;
  color: var(--color-primary);
  background: linear-gradient(90deg, transparent, var(--color-accent) 100%);
  background-size: 0% 100%;
  background-repeat: no-repeat;
  transition: all var(--transition);
  user-select: none;
  list-style: none;
  position: relative;
}

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

summary::before {
  content: '▶';
  display: inline-block;
  margin-right: 0.75rem;
  transition: transform var(--transition);
  color: var(--color-primary);
}

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

summary:hover {
  background-size: 100% 100%;
  color: var(--color-secondary);
  padding-left: 2rem;
}

summary:focus-visible {
  outline: 3px solid var(--color-accent);
  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(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.site-footer {
  background: var(--color-secondary);
  color: var(--color-accent);
  padding: 3rem 1.5rem 2rem;
  margin-top: 5rem;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -30px;
  left: 0;
  right: 0;
  height: 30px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

.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: 0.75rem;
}

@media (min-width: 768px) {
  body {
    font-size: 17px;
  }

  h1 {
    font-size: 3.25rem;
  }

  h2 {
    font-size: 2.5rem;
  }

  h3 {
    font-size: 1.875rem;
  }

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

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

  .site-nav ul {
    padding: 1.25rem 2rem;
    gap: 1rem;
  }

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

  .card {
    padding: 2.5rem;
  }

  .card:nth-child(odd) {
    transform: translateX(-16px);
  }

  .card:nth-child(even) {
    transform: translateX(16px);
  }

  blockquote {
    padding: 2rem 2.5rem;
    left: -16px;
  }

  .breadcrumbs {
    padding: 1.25rem 2rem;
    transform: translateX(-12px);
  }
}

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

  h1 {
    font-size: 3.75rem;
  }

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

  .site-header h1 {
    font-size: 4rem;
  }

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

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

  .card {
    padding: 3rem;
  }

  .card:nth-child(3n+1) {
    transform: translateX(-24px);
  }

  .card:nth-child(3n+2) {
    transform: translateX(12px);
  }

  .card:nth-child(3n) {
    transform: translateX(24px);
  }

  table {
    margin: 3rem 0;
  }

  th, td {
    padding: 1.25rem 1.5rem;
  }
}

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

  .card:hover {
    transform: none;
  }

  .site-nav a:hover {
    transform: none;
  }

  summary:hover {
    padding-left: 1.5rem;
  }

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

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

  .site-header {
    box-shadow: none;
    padding: 1rem 0;
  }

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

  .container {
    max-width: 100%;
  }

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

  a {
    text-decoration: underline;
  }

  details[open] summary ~ * {
    display: block;
  }

  details summary::before {
    content: '';
  }
}