:root {
  --color-primary: #1F4D8C;
  --color-secondary: #2E7D6B;
  --color-accent: #C86B2A;
  --color-background: #0E1116;
  --color-surface: #151B24;
  --color-text: #E9EEF6;
  --color-text-muted: #AAB6C6;
  --color-border: #2A3444;
  --radius: 2px;
  --space: 1rem;
  --maxw: 72rem;
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  line-height: 1.5;
}

body {
  font-family: var(--font-system);
  background-color: var(--color-background);
  color: var(--color-text);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

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

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

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

header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: calc(var(--space) * 1.5) var(--space);
}

header .header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space);
}

header .site-name {
  font-size: clamp(1.5rem, 1.25rem + 1vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

header .site-name a {
  color: var(--color-text);
  text-decoration: none;
}

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

nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 1.5);
}

nav a {
  font-weight: 500;
  letter-spacing: 0.01em;
}

nav[aria-label="Breadcrumb"] {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: calc(var(--space) * 0.75) var(--space);
}

nav[aria-label="Breadcrumb"] ol {
  max-width: var(--maxw);
  margin: 0 auto;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 0.5);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

nav[aria-label="Breadcrumb"] li:not(:last-child)::after {
  content: "/";
  margin-left: calc(var(--space) * 0.5);
  color: var(--color-border);
}

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: calc(var(--space) * 2) var(--space);
  width: 100%;
}

h1 {
  font-size: clamp(2rem, 1.5rem + 2vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: calc(var(--space) * 1.5);
  color: var(--color-text);
}

h2 {
  font-size: clamp(1.5rem, 1.25rem + 1vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-top: calc(var(--space) * 2.5);
  margin-bottom: var(--space);
  color: var(--color-text);
}

h3 {
  font-size: clamp(1.25rem, 1.125rem + 0.5vw, 1.5rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-top: calc(var(--space) * 2);
  margin-bottom: calc(var(--space) * 0.75);
  color: var(--color-text);
}

p {
  margin-bottom: var(--space);
  max-width: 70ch;
}

section {
  margin-bottom: calc(var(--space) * 3);
}

article {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 2);
  margin-bottom: calc(var(--space) * 2);
}

aside {
  background-color: var(--color-surface);
  border-left: 3px solid var(--color-accent);
  padding: calc(var(--space) * 1.5);
  margin: calc(var(--space) * 2) 0;
  border-radius: var(--radius);
}

aside h3 {
  margin-top: 0;
  font-size: 1.125rem;
  color: var(--color-accent);
}

blockquote {
  background-color: var(--color-surface);
  border-left: 4px solid var(--color-accent);
  padding: calc(var(--space) * 1.5);
  margin: calc(var(--space) * 2) 0;
  font-style: italic;
  color: var(--color-text);
  position: relative;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: calc(var(--space) * 2) 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 0.9375rem;
  overflow: hidden;
  border-radius: var(--radius);
}

caption {
  font-weight: 600;
  text-align: left;
  padding: calc(var(--space) * 1.25);
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  font-size: 1rem;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

thead {
  background-color: rgba(31, 77, 140, 0.15);
}

th {
  text-align: left;
  padding: calc(var(--space) * 0.75) var(--space);
  font-weight: 600;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  letter-spacing: 0.01em;
}

td {
  padding: calc(var(--space) * 0.75) var(--space);
  border-bottom: 1px solid var(--color-border);
}

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

tbody tr:nth-child(odd) {
  background-color: rgba(255, 255, 255, 0.02);
}

tbody tr:hover {
  background-color: rgba(31, 77, 140, 0.1);
}

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

details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: calc(var(--space) * 0.75);
  overflow: hidden;
}

summary {
  padding: calc(var(--space) * 1.25);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 0.75);
  transition: background-color 0.2s ease, color 0.2s ease;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

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

summary::before {
  content: "▸";
  display: inline-block;
  font-size: 1.125rem;
  transition: transform 0.2s ease;
  color: var(--color-accent);
  flex-shrink: 0;
}

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

summary:hover {
  background-color: rgba(31, 77, 140, 0.1);
  color: var(--color-primary);
}

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

details[open] summary {
  border-bottom: 1px solid var(--color-border);
  background-color: rgba(31, 77, 140, 0.08);
}

details > *:not(summary) {
  padding: calc(var(--space) * 1.25);
}

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

footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: calc(var(--space) * 2) var(--space);
  margin-top: calc(var(--space) * 3);
}

footer .footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
}

footer nav ul {
  margin-bottom: var(--space);
}

footer p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: calc(var(--space) * 0.5);
}

@media (min-width: 768px) {
  header .header-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  nav ul {
    gap: calc(var(--space) * 2);
  }

  main {
    padding: calc(var(--space) * 3) var(--space);
  }

  article {
    padding: calc(var(--space) * 2.5);
  }

  table {
    font-size: 1rem;
  }
}

@media (min-width: 1024px) {
  main {
    padding: calc(var(--space) * 4) var(--space);
  }

  section {
    margin-bottom: calc(var(--space) * 4);
  }
}

@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;
  }

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

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

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

  details {
    border: 1px solid #ccc;
  }

  details summary {
    display: none;
  }

  details > *:not(summary) {
    display: block !important;
  }

  table {
    border: 1px solid #000;
  }

  th, td {
    border: 1px solid #000;
  }
}