* {
  box-sizing: border-box;
  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: 'Courier New', 'Lucida Console', Monaco, monospace;
  --max-width: 1100px;
  --radius: 2px;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image: radial-gradient(circle, var(--color-border) 1px, transparent 1px);
  background-size: 20px 20px;
  background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: bold;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

h1 {
  font-size: 3rem;
  border-bottom: 4px dotted var(--color-primary);
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

h2 {
  font-size: 2.25rem;
  border-bottom: 3px dashed var(--color-secondary);
  padding-bottom: 0.5rem;
  margin-top: 2.5rem;
}

h3 {
  font-size: 1.75rem;
  position: relative;
  padding-left: 1.25rem;
  margin-top: 2rem;
}

h3::before {
  content: '▪';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: 1.5em;
}

h4 {
  font-size: 1.5rem;
  color: var(--color-secondary);
  margin-top: 1.75rem;
}

h5 {
  font-size: 1.25rem;
  margin-top: 1.5rem;
}

h6 {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin-top: 1.25rem;
  text-transform: none;
}

p {
  margin-bottom: 1.25rem;
  max-width: 70ch;
}

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

a:hover {
  color: var(--color-secondary);
  background-color: var(--color-accent);
  text-decoration-style: solid;
}

a:focus-visible {
  outline: 3px dotted var(--color-primary);
  outline-offset: 4px;
  background-color: var(--color-surface);
}

strong {
  font-weight: bold;
  color: var(--color-text);
  background-color: var(--color-accent);
  padding: 0 4px;
}

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

blockquote {
  margin: 2rem 0;
  padding: 1.5rem 2rem;
  background-color: var(--color-surface);
  background-image: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(37, 99, 235, 0.03) 10px, rgba(37, 99, 235, 0.03) 20px);
  border-left: 6px dotted var(--color-primary);
  font-style: italic;
  color: var(--color-text-muted);
  position: relative;
}

blockquote::before {
  content: '"';
  font-size: 4rem;
  position: absolute;
  top: -10px;
  left: 10px;
  color: var(--color-accent);
  line-height: 1;
}

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

.site-header {
  background-color: var(--color-bg);
  border-bottom: 4px dashed var(--color-border);
  padding: 2rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 0 var(--color-surface);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.site-nav {
  display: flex;
  gap: 0;
  flex-wrap: wrap;
}

.site-nav a {
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  text-transform: uppercase;
  font-weight: bold;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  border: 2px dotted transparent;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
  display: block;
}

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

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

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

.site-footer {
  background-color: var(--color-text);
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 15px 15px;
  color: var(--color-accent);
  border-top: 4px dotted var(--color-primary);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}

.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);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

.breadcrumbs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  padding: 0.75rem 1.25rem;
  background-color: var(--color-surface);
  border: 2px dashed var(--color-border);
  font-size: 0.875rem;
}

.breadcrumbs a {
  text-decoration: none;
  padding: 0.25rem 0.5rem;
}

.breadcrumbs a::after {
  content: '→';
  margin-left: 0.75rem;
  color: var(--color-text-muted);
}

.breadcrumbs a:last-child::after {
  content: '';
}

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

.card::before {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  border: 1px solid var(--color-surface);
  pointer-events: none;
}

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

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

thead {
  background-color: var(--color-text);
  background-image: repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(255, 255, 255, 0.05) 2px, rgba(255, 255, 255, 0.05) 4px);
  color: var(--color-bg);
}

th {
  padding: 1rem 1.25rem;
  text-align: left;
  font-weight: bold;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  border-bottom: 3px dashed var(--color-primary);
}

td {
  padding: 1rem 1.25rem;
  border-bottom: 2px 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, rgba(37, 99, 235, 0.03) 1px, transparent 1px);
  background-size: 16px 16px;
}

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: 3px dotted var(--color-border);
  background-color: var(--color-bg);
  transition: border-color 0.2s ease;
}

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

details[open] {
  border-color: var(--color-secondary);
  border-style: dashed;
}

summary {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-weight: bold;
  text-transform: uppercase;
  font-size: 1.125rem;
  background-color: var(--color-surface);
  background-image: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(37, 99, 235, 0.02) 10px, rgba(37, 99, 235, 0.02) 20px);
  transition: background-color 0.2s ease, color 0.2s ease;
  user-select: none;
  position: relative;
}

summary::marker {
  content: '▸ ';
  color: var(--color-primary);
  font-size: 1.2em;
}

details[open] summary::marker {
  content: '▾ ';
}

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

summary:focus-visible {
  outline: 3px dotted var(--color-primary);
  outline-offset: -6px;
}

details > *:not(summary) {
  padding: 1.5rem;
  border-top: 2px dashed var(--color-border);
  animation: slideDown 0.2s ease;
}

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

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

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  border-style: dashed;
  box-shadow: 4px 4px 0 var(--color-surface);
}

button,
input[type="submit"],
input[type="button"] {
  padding: 1rem 2rem;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-color: var(--color-primary);
  color: var(--color-bg);
  border: 3px dotted var(--color-primary);
  cursor: pointer;
  transition: background-color 0.2s ease, box-shadow 0.2s ease, border-color 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 dashed var(--color-text);
  outline-offset: 4px;
}

button:active {
  transform: translate(2px, 2px);
  box-shadow: 3px 3px 0 var(--color-accent);
}

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

li {
  margin-bottom: 0.75rem;
  line-height: 1.7;
}

ul li::marker {
  content: '▪ ';
  color: var(--color-primary);
  font-size: 1.2em;
}

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 4px dotted var(--color-border);
  transition: border-color 0.2s ease;
}

img:hover {
  border-color: var(--color-primary);
  border-style: dashed;
}

code {
  font-family: var(--font-main);
  background-color: var(--color-surface);
  padding: 0.2rem 0.5rem;
  border: 2px dotted var(--color-border);
  font-size: 0.9em;
  color: var(--color-secondary);
}

pre {
  background-color: var(--color-text);
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 10px 10px;
  color: var(--color-accent);
  padding: 1.5rem;
  border: 3px dotted var(--color-primary);
  overflow-x: auto;
  margin: 2rem 0;
}

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

@media (max-width: 767px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  .site-header .container {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .site-nav {
    flex-direction: column;
    width: 100%;
  }
  
  .site-nav a {
    width: 100%;
    border-bottom: 2px dotted var(--color-border);
  }
  
  .card {
    padding: 1.25rem;
  }
  
  table {
    font-size: 0.875rem;
  }
  
  th, td {
    padding: 0.75rem 0.5rem;
  }
}

@media (min-width: 768px) {
  body {
    font-size: 17px;
  }
  
  .site-nav {
    gap: 0.5rem;
  }
  
  .card:hover {
    transform: translateY(-2px);
  }
}

@media (min-width: 1024px) {
  body {
    font-size: 18px;
  }
  
  h1 {
    font-size: 3.5rem;
  }
  
  .site-main {
    padding: 4rem 0;
  }
  
  .container {
    padding: 0 2rem;
  }
}

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

@media print {
  body {
    background: white;
    color: black;
  }
  
  .site-header,
  .site-nav,
  .site-footer,
  .breadcrumbs {
    display: none;
  }
  
  .container {
    max-width: 100%;
    padding: 0;
  }
  
  .card {
    border: 1px solid black;
    page-break-inside: avoid;
  }
  
  a {
    text-decoration: underline;
    color: black;
  }
  
  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }
}