:root {
  --color-primary: #2B2A6E;
  --color-secondary: #0E6F6A;
  --color-accent: #D85A3A;
  --color-background: #F6F2EA;
  --color-surface: #FFFFFF;
  --color-text: #1B1B22;
  --color-text-muted: #5B5B6A;
  --color-border: #D7D0C6;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(27, 27, 34, 0.10);
  --measure: 68ch;
  --transition-duration: 0.25s;
}

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

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  font-size: 1.0625rem;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

ul, ol {
  list-style-position: inside;
}

a {
  color: var(--color-secondary);
  text-decoration: underline;
  text-decoration-thickness: 0.0625rem;
  text-underline-offset: 0.1875rem;
  transition: color var(--transition-duration) ease, background-color var(--transition-duration) ease;
}

a:hover {
  color: var(--color-primary);
  text-decoration-thickness: 0.125rem;
}

a:focus-visible {
  outline: 0.1875rem solid var(--color-accent);
  outline-offset: 0.25rem;
  border-radius: 0.125rem;
}

h1 {
  font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
  line-height: 1.1;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.625rem, 3.5vw + 0.75rem, 2.625rem);
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  letter-spacing: -0.015em;
}

h3 {
  font-size: clamp(1.375rem, 2.5vw + 0.5rem, 2rem);
  line-height: 1.3;
  font-weight: 600;
  color: var(--color-secondary);
  margin-top: 2rem;
  margin-bottom: 0.875rem;
}

h4 {
  font-size: clamp(1.125rem, 2vw + 0.25rem, 1.5rem);
  line-height: 1.4;
  font-weight: 600;
  color: var(--color-text);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1.25rem;
  max-width: var(--measure);
}

body {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}

header {
  background-color: var(--color-surface);
  border-bottom: 0.125rem solid var(--color-border);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

header .header-inner {
  max-width: 75rem;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

header .site-name {
  font-size: clamp(1.375rem, 2vw + 0.5rem, 1.75rem);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

header .site-name:hover {
  color: var(--color-secondary);
}

header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
}

header nav a {
  font-weight: 500;
  white-space: nowrap;
}

main {
  max-width: 75rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  width: 100%;
}

@media (min-width: 768px) {
  main {
    padding: 3.5rem 2rem;
  }
}

@media (min-width: 1024px) {
  main {
    display: grid;
    grid-template-columns: 1fr minmax(auto, 20rem);
    gap: 3rem;
    align-items: start;
  }

  main > article,
  main > .main-content {
    grid-column: 1;
  }

  main > aside {
    grid-column: 2;
    position: sticky;
    top: 6.5rem;
  }
}

section, article, aside {
  margin-bottom: 3rem;
}

aside {
  background-color: var(--color-surface);
  border: 0.0625rem solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

aside h2, aside h3 {
  margin-top: 0;
}

.quick-nav {
  background-color: var(--color-surface);
  border: 0.0625rem solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow);
}

.quick-nav h2 {
  margin-top: 0;
  font-size: clamp(1.25rem, 2vw + 0.5rem, 1.625rem);
}

.quick-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.quick-nav li {
  flex: 1 1 auto;
  min-width: 10rem;
}

.quick-nav a {
  display: block;
  padding: 0.75rem 1.25rem;
  background-color: var(--color-background);
  border: 0.0625rem solid var(--color-border);
  border-radius: calc(var(--radius) * 0.6);
  text-decoration: none;
  font-weight: 500;
  color: var(--color-secondary);
  transition: background-color var(--transition-duration) ease, border-color var(--transition-duration) ease, transform var(--transition-duration) ease;
}

.quick-nav a:hover {
  background-color: var(--color-surface);
  border-color: var(--color-secondary);
  transform: translateY(-0.125rem);
}

.quick-nav a:focus-visible {
  outline: 0.1875rem solid var(--color-accent);
  outline-offset: 0.125rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0 2rem;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  font-size: 0.9375rem;
}

@media (max-width: 767px) {
  table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}

caption {
  font-weight: 600;
  font-size: 1.0625rem;
  text-align: left;
  padding: 1rem 1.25rem;
  background-color: var(--color-primary);
  color: var(--color-surface);
}

thead {
  background-color: var(--color-secondary);
  color: var(--color-surface);
}

@media (min-width: 768px) {
  thead {
    position: sticky;
    top: 0;
    z-index: 10;
  }
}

th {
  font-weight: 600;
  text-align: left;
  padding: 0.875rem 1.25rem;
  border-bottom: 0.125rem solid var(--color-border);
}

td {
  padding: 0.875rem 1.25rem;
  border-bottom: 0.0625rem solid var(--color-border);
}

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

tbody tr:nth-child(odd) {
  background-color: var(--color-background);
}

tbody tr:nth-child(even) {
  background-color: var(--color-surface);
}

tbody tr:hover {
  background-color: rgba(14, 111, 106, 0.08);
}

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

details {
  background-color: var(--color-surface);
  border: 0.0625rem solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 0.25rem 0.75rem rgba(27, 27, 34, 0.06);
  transition: box-shadow var(--transition-duration) ease;
}

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

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

summary {
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: color var(--transition-duration) ease;
  user-select: none;
}

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

summary::before {
  content: "▶";
  display: inline-block;
  color: var(--color-accent);
  font-size: 0.875rem;
  transition: transform var(--transition-duration) ease;
  flex-shrink: 0;
}

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

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

summary:focus-visible {
  outline: 0.1875rem solid var(--color-accent);
  outline-offset: 0.25rem;
  border-radius: 0.25rem;
}

details p {
  margin-top: 1rem;
  margin-bottom: 0.5rem;
  padding-left: 1.625rem;
}

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

blockquote {
  margin: 2rem 0;
  padding: 1.5rem 1.5rem 1.5rem 2rem;
  background-color: rgba(14, 111, 106, 0.05);
  border-left: 0.375rem solid var(--color-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--color-text);
  box-shadow: 0 0.25rem 0.75rem rgba(27, 27, 34, 0.04);
}

blockquote p {
  margin-bottom: 0.75rem;
}

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

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.9375rem;
  margin-bottom: 1.5rem;
  color: var(--color-text-muted);
  align-items: center;
}

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

.breadcrumbs a:hover {
  text-decoration: underline;
}

.breadcrumbs span {
  user-select: none;
}

.breadcrumbs .separator::before {
  content: "→";
  color: var(--color-text-muted);
  margin: 0 0.25rem;
}

footer {
  background-color: var(--color-primary);
  color: var(--color-surface);
  border-top: 0.25rem solid var(--color-secondary);
  margin-top: auto;
}

footer .footer-inner {
  max-width: 75rem;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}

footer a {
  color: var(--color-surface);
  font-weight: 500;
}

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

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
}

footer p {
  margin: 0;
  font-size: 0.9375rem;
}

@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;
  }
}

@media print {
  header, footer, aside, .quick-nav, nav, details summary::before {
    display: none;
  }

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

  main {
    max-width: 100%;
    padding: 0;
    display: block;
  }

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

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.875rem;
  }

  details {
    border: 0.0625rem solid #ccc;
  }

  details[open] summary {
    margin-bottom: 0.5rem;
  }

  table {
    box-shadow: none;
  }

  thead {
    background-color: #f0f0f0;
    color: black;
  }

  tbody tr {
    page-break-inside: avoid;
  }
}