* {
  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: 'Trebuchet MS', 'Lucida Sans', 'Lucida Grande', sans-serif;
  --max-width: 1100px;
  --radius: 4px;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  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;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.75em;
  color: var(--color-text);
  border-bottom: 2px dotted var(--color-border);
  padding-bottom: 0.25em;
}

h1 {
  font-size: 2.5em;
  margin-top: 0.5em;
}

h2 {
  font-size: 2em;
  margin-top: 1em;
}

h3 {
  font-size: 1.5em;
  margin-top: 1em;
}

h4 {
  font-size: 1.25em;
  margin-top: 1em;
}

h5 {
  font-size: 1.1em;
  margin-top: 1em;
}

h6 {
  font-size: 1em;
  margin-top: 1em;
}

p {
  margin-bottom: 1em;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px dotted var(--color-primary);
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

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

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

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

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

blockquote {
  margin: 1.5em 0;
  padding: 1em 1.5em;
  background-color: var(--color-surface);
  background-image: radial-gradient(circle, var(--color-accent) 1px, transparent 1px);
  background-size: 8px 8px;
  border-left: 4px dotted var(--color-primary);
  font-style: italic;
  color: var(--color-text-muted);
}

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

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

.site-header {
  background-color: var(--color-bg);
  border-bottom: 3px dashed var(--color-border);
  padding: 1.5rem 1rem;
  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-header h1 {
  font-size: 1.75em;
  margin: 0;
  border: none;
  padding: 0;
}

.site-header a {
  border: none;
}

.site-header a:hover {
  background-color: transparent;
  color: var(--color-secondary);
}

.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-surface);
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.site-nav a:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-bg);
  border-style: solid;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
}

.site-nav a:focus-visible {
  outline: 2px dashed var(--color-secondary);
  outline-offset: 2px;
}

.site-main {
  flex: 1;
  padding: 2rem 1rem;
}

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

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding: 0.75rem;
  background-color: var(--color-surface);
  border: 1px dotted var(--color-border);
  border-radius: var(--radius);
  font-size: 0.9em;
}

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

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

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

.card {
  background-color: var(--color-bg);
  border: 2px dotted var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 6px rgba(37, 99, 235, 0.08);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  box-shadow: 0 6px 12px rgba(37, 99, 235, 0.15);
  border-color: var(--color-primary);
  border-style: dashed;
}

.card h2,
.card h3,
.card h4 {
  margin-top: 0;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 1.5rem 0;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--color-bg);
}

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

thead th {
  padding: 0.75rem;
  text-align: left;
  font-weight: 700;
  border-bottom: 2px dotted var(--color-bg);
}

tbody tr {
  border-bottom: 1px dotted var(--color-border);
  transition: background-color 0.2s ease;
}

tbody tr:nth-child(even) {
  background-color: var(--color-surface);
  background-image: radial-gradient(circle, var(--color-accent) 0.5px, transparent 0.5px);
  background-size: 12px 12px;
}

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

tbody td {
  padding: 0.75rem;
  border-right: 1px dotted var(--color-border);
}

tbody td:last-child {
  border-right: none;
}

thead th {
  border-right: 1px dotted rgba(255, 255, 255, 0.3);
}

thead th:last-child {
  border-right: none;
}

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

summary {
  padding: 1rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-bg);
  border-bottom: 2px dotted var(--color-border);
  transition: background-color 0.2s ease, color 0.2s ease;
  user-select: none;
}

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

summary:focus-visible {
  outline: 2px dashed var(--color-primary);
  outline-offset: -2px;
}

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

details > *:not(summary) {
  padding: 1rem 1.5rem;
  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-text);
  background-image: radial-gradient(circle, var(--color-secondary) 1px, transparent 1px);
  background-size: 15px 15px;
  color: var(--color-bg);
  padding: 2rem 1rem;
  margin-top: 3rem;
  border-top: 3px dotted var(--color-border);
}

.site-footer .container {
  display: grid;
  gap: 1.5rem;
}

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

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

.site-footer p {
  color: var(--color-accent);
}

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

li {
  margin-bottom: 0.5rem;
  padding-left: 0.5rem;
}

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

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

code {
  font-family: 'Courier New', Courier, monospace;
  background-color: var(--color-surface);
  padding: 0.2em 0.4em;
  border-radius: var(--radius);
  border: 1px dotted var(--color-border);
  font-size: 0.9em;
  color: var(--color-secondary);
}

pre {
  background-color: var(--color-surface);
  padding: 1rem;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 1.5rem 0;
}

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

hr {
  border: none;
  border-top: 2px dashed var(--color-border);
  margin: 2rem 0;
}

img {
  max-width: 100%;
  height: auto;
  border: 2px dotted var(--color-border);
  border-radius: var(--radius);
  display: block;
  margin: 1.5rem 0;
}

button,
input[type="submit"],
input[type="button"] {
  font-family: var(--font-main);
  font-size: 1em;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-primary);
  color: var(--color-bg);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

button:hover,
input[type="submit"]:hover,
input[type="button"]:hover {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  box-shadow: 0 4px 8px rgba(37, 99, 235, 0.3);
}

button:focus-visible,
input[type="submit"]:focus-visible,
input[type="button"]:focus-visible {
  outline: 2px dashed var(--color-text);
  outline-offset: 2px;
}

input[type="text"],
input[type="email"],
input[type="search"],
input[type="url"],
input[type="tel"],
textarea,
select {
  font-family: var(--font-main);
  font-size: 1em;
  padding: 0.75rem;
  border: 2px dotted var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-bg);
  color: var(--color-text);
  width: 100%;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="search"]:focus,
input[type="url"]:focus,
input[type="tel"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  border-style: solid;
  box-shadow: 0 0 0 3px var(--color-accent);
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--color-text);
}

fieldset {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  margin: 1.5rem 0;
}

legend {
  padding: 0 0.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

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

  h1 {
    font-size: 3em;
  }

  h2 {
    font-size: 2.25em;
  }

  h3 {
    font-size: 1.75em;
  }

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

  .site-main {
    padding: 3rem 1.5rem;
  }

  .site-footer {
    padding: 3rem 1.5rem;
  }

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

  .card {
    padding: 2rem;
  }
}

@media (min-width: 1024px) {
  .site-header .container {
    flex-wrap: nowrap;
  }

  .site-nav {
    gap: 1rem;
  }

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

  .container {
    padding: 0 2rem;
  }
}

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

@media print {
  body {
    background: white;
    background-image: none;
    font-size: 12pt;
    color: black;
  }

  .site-header,
  .site-nav,
  .site-footer {
    display: none;
  }

  .site-main {
    padding: 0;
  }

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

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

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

  table {
    page-break-inside: avoid;
  }

  h1, h2, h3, h4, h5, h6 {
    page-break-after: avoid;
  }
}