* {
  box-sizing: border-box;
}

html, body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, figcaption, blockquote, dl, dd {
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #2563eb;
  --color-secondary: #1d4ed8;
  --color-accent: #bfdbfe;
  --color-bg: #ffffff;
  --color-surface: #eff6ff;
  --color-text: #172554;
  --color-text-muted: #6080b0;
  --color-border: #c8daf0;
  --font-main: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1100px;
  --radius: 8px;
}

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image: radial-gradient(circle, var(--color-surface) 1px, transparent 1px);
  background-size: 20px 20px;
  line-height: 1.6;
  font-size: 16px;
}

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

h1 {
  font-size: 2.5rem;
  border-bottom: 3px dashed var(--color-primary);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2rem;
  border-left: 4px dotted var(--color-primary);
  padding-left: 1rem;
  margin-top: 2rem;
}

h3 {
  font-size: 1.75rem;
  color: var(--color-secondary);
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1.1rem;
}

p {
  margin-bottom: 1rem;
}

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

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

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

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

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

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

blockquote {
  margin: 2rem 0;
  padding: 1.5rem;
  background-color: var(--color-surface);
  background-image: radial-gradient(circle, var(--color-accent) 1.5px, transparent 1.5px);
  background-size: 15px 15px;
  border-left: 6px solid var(--color-primary);
  border-radius: var(--radius);
  font-style: italic;
  color: var(--color-text-muted);
}

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

.site-header {
  background-color: var(--color-bg);
  border-bottom: 3px dashed var(--color-border);
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
}

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

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

.site-nav a {
  padding: 0.5rem 1rem;
  border: 2px dotted var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-bg);
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
  border-bottom: 2px dotted var(--color-border);
}

.site-nav a:hover {
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

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

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

.site-footer {
  background-color: var(--color-surface);
  background-image: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 10px,
    var(--color-accent) 10px,
    var(--color-accent) 11px
  );
  border-top: 3px dashed var(--color-primary);
  padding: 2rem 0;
  margin-top: 4rem;
  text-align: center;
  color: var(--color-text-muted);
}

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

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 2rem;
  padding: 0.75rem 1rem;
  background-color: var(--color-surface);
  border: 2px dotted var(--color-border);
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.breadcrumbs a {
  border-bottom: 1px dotted var(--color-primary);
}

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

.breadcrumbs::before {
  content: '→';
  color: var(--color-text-muted);
  margin-right: 0.25rem;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 2rem 0;
  border: 3px dotted var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--color-bg);
}

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

th {
  padding: 1rem;
  text-align: left;
  font-weight: 700;
  border-bottom: 2px dashed var(--color-bg);
}

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

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

tbody tr:nth-child(odd) {
  background-color: var(--color-surface);
  background-image: radial-gradient(circle, var(--color-accent) 0.8px, transparent 0.8px);
  background-size: 12px 12px;
}

tbody tr:hover {
  background-color: var(--color-accent);
  background-image: none;
}

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

details {
  margin: 1.5rem 0;
  border: 2px dotted var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-surface);
  overflow: hidden;
}

details[open] {
  border-color: var(--color-primary);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.15);
}

summary {
  padding: 1rem 1.5rem;
  cursor: pointer;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-bg);
  border-bottom: 2px dashed transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  list-style: none;
}

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

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

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

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

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

details p {
  padding: 1.5rem;
}

.card {
  background-color: var(--color-bg);
  border: 3px dotted var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  margin: 1.5rem 0;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.2);
  background-color: var(--color-surface);
}

.card h3 {
  margin-top: 0;
  border-bottom: 2px dashed var(--color-accent);
  padding-bottom: 0.5rem;
}

ul, ol {
  margin: 1rem 0 1rem 2rem;
}

li {
  margin-bottom: 0.5rem;
}

ul li::marker {
  color: var(--color-primary);
}

ol li::marker {
  color: var(--color-secondary);
  font-weight: 700;
}

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

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  h3 {
    font-size: 2rem;
  }

  .site-header .container {
    flex-wrap: nowrap;
  }

  .site-nav {
    gap: 1rem;
  }

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

  .card {
    padding: 2.5rem;
  }

  table {
    font-size: 1rem;
  }
}

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

  h2 {
    font-size: 2.5rem;
  }

  .site-main {
    padding: 5rem 0;
  }

  .breadcrumbs {
    font-size: 1rem;
  }
}

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

  summary::before {
    transition: none;
  }
}

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

  .site-header {
    position: static;
    border-bottom: 2px solid var(--color-text);
  }

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

  body {
    background: white;
    color: black;
  }

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

  .card {
    border: 2px solid black;
    page-break-inside: avoid;
  }

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

button, input, textarea, select {
  font-family: var(--font-main);
  font-size: 1rem;
  padding: 0.75rem 1rem;
  border: 2px dotted var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

button {
  cursor: pointer;
  font-weight: 700;
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}

button:hover {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px dotted var(--color-primary);
  outline-offset: 3px;
  border-color: var(--color-primary);
}

input:focus,
textarea:focus,
select:focus {
  background-color: var(--color-surface);
  border-color: var(--color-primary);
}

hr {
  border: none;
  border-top: 3px dashed var(--color-border);
  margin: 3rem 0;
}

code {
  background-color: var(--color-surface);
  padding: 0.2rem 0.5rem;
  border-radius: calc(var(--radius) / 2);
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
  border: 1px dotted var(--color-border);
  color: var(--color-secondary);
}

pre {
  background-color: var(--color-surface);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 2px dotted var(--color-border);
  overflow-x: auto;
  margin: 1.5rem 0;
}

pre code {
  background: none;
  border: none;
  padding: 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  border: 3px dotted var(--color-border);
}

figure {
  margin: 2rem 0;
}

figcaption {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-style: italic;
  text-align: center;
}