:root {
  --color-bg: #F6F3EE;
  --color-surface: #FFFFFF;
  --color-text: #132027;
  --color-muted: #4B5A63;
  --color-border: #D9D2C7;
  --color-primary: #0E5A6A;
  --color-secondary: #B85C38;
  --color-accent: #D7B24A;
  --color-background: #F6F3EE;
  --color-text-muted: #4B5A63;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  --font-serif: ui-serif, Georgia, "Times New Roman", Times, serif;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(19, 32, 39, 0.10);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  line-height: 1.2;
  margin-bottom: 0.75em;
  font-weight: 600;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2rem, 1.5rem + 2vw, 3rem);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.5rem, 1.25rem + 1vw, 2.25rem);
  margin-top: 2rem;
}

h3 {
  font-size: clamp(1.25rem, 1.125rem + 0.5vw, 1.75rem);
  margin-top: 1.5rem;
}

h4 {
  font-size: clamp(1.125rem, 1rem + 0.25vw, 1.375rem);
}

p {
  margin-bottom: 1em;
  max-width: 70ch;
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
  color: var(--color-secondary);
  text-decoration-color: var(--color-secondary);
}

a:visited {
  color: #0A4553;
}

a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  margin-bottom: 1em;
  padding-left: 1.5em;
}

li {
  margin-bottom: 0.5em;
}

.page-shell {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas:
    "header"
    "main"
    "aside"
    "footer";
  min-height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
}

header {
  grid-area: header;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem clamp(1rem, 4vw, 2rem);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

header .site-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 1.25rem + 0.75vw, 2rem);
  margin-bottom: 0.75rem;
  color: var(--color-primary);
}

header .site-title a {
  text-decoration: none;
  color: inherit;
}

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

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

nav a {
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

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

nav[aria-label="Breadcrumb"] {
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  padding: 0.75rem 0;
  color: var(--color-muted);
}

nav[aria-label="Breadcrumb"] ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

nav[aria-label="Breadcrumb"] li {
  display: flex;
  align-items: center;
  margin: 0;
}

nav[aria-label="Breadcrumb"] li::after {
  content: "/";
  margin-left: 0.5rem;
  color: var(--color-border);
}

nav[aria-label="Breadcrumb"] li:last-child::after {
  content: "";
}

nav[aria-label="Breadcrumb"] a {
  text-decoration: none;
  color: var(--color-primary);
}

main {
  grid-area: main;
  padding: clamp(2rem, 5vw, 4rem) clamp(1rem, 4vw, 2rem);
  background-color: var(--color-surface);
  max-width: 100%;
}

aside {
  grid-area: aside;
  padding: clamp(1.5rem, 4vw, 2rem) clamp(1rem, 4vw, 2rem);
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

footer {
  grid-area: footer;
  background-color: var(--color-primary);
  color: var(--color-surface);
  padding: 2rem clamp(1rem, 4vw, 2rem);
  text-align: center;
  font-size: 0.9rem;
}

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

blockquote {
  background-color: var(--color-surface);
  border-left: 4px solid var(--color-primary);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  font-style: italic;
  border-radius: var(--radius);
  box-shadow: 0 2px 8px rgba(19, 32, 39, 0.05);
  max-width: 65ch;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  font-size: 0.95rem;
}

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

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

thead th {
  font-weight: 600;
  text-align: left;
  padding: 1rem;
  border-bottom: 2px solid var(--color-border);
}

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

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

tbody tr:hover {
  background-color: #EAE4D8;
}

td {
  padding: 0.875rem 1rem;
  vertical-align: top;
}

th {
  padding: 0.875rem 1rem;
  vertical-align: top;
}

details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
  transition: box-shadow 0.2s ease;
}

details:hover {
  box-shadow: 0 4px 12px rgba(19, 32, 39, 0.08);
}

details[open] {
  box-shadow: var(--shadow);
}

summary {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  padding: 0.5rem 0;
  color: var(--color-primary);
  transition: color 0.2s ease;
  user-select: none;
}

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

summary::before {
  content: "▶";
  display: inline-block;
  margin-right: 0.75rem;
  transition: transform 0.2s ease;
  color: var(--color-secondary);
}

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

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

summary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

details div {
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  margin-top: 0.75rem;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

@media (min-width: 768px) {
  .page-shell {
    grid-template-columns: 1fr 300px;
    grid-template-areas:
      "header header"
      "main aside"
      "footer footer";
  }

  aside {
    border-top: none;
    border-left: 1px solid var(--color-border);
  }

  thead th {
    position: sticky;
    top: 0;
    z-index: 10;
    background-color: var(--color-primary);
  }

  nav {
    gap: 2rem;
  }
}

@media (min-width: 1024px) {
  .page-shell {
    grid-template-columns: 1fr 350px;
  }

  main {
    padding: clamp(3rem, 6vw, 5rem) clamp(2rem, 5vw, 3rem);
  }
}

@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;
  }

  summary::before {
    transition: none;
  }
}

@media print {
  body {
    background-color: white;
    color: black;
    font-size: 12pt;
  }

  header {
    position: static;
    box-shadow: none;
    border-bottom: 2px solid black;
  }

  nav[aria-label="Breadcrumb"],
  aside,
  footer {
    display: none;
  }

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

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }

  table {
    page-break-inside: avoid;
  }

  thead {
    display: table-header-group;
  }

  tr {
    page-break-inside: avoid;
  }

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

  details {
    border: 1px solid black;
  }

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

  details[open] summary {
    border-bottom: 1px solid black;
    margin-bottom: 0.5rem;
    padding-bottom: 0.5rem;
  }
}