:root {
  --bg: #f5f7fa;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #667085;
  --border: #d8dee8;
  --accent: #234b73;
  --accent-soft: #eef4fa;
  --shadow: 0 2px 8px rgba(15, 23, 42, 0.05);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 20px 56px;
}

.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
  font-size: 0.95rem;
}

.nav-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

a {
  color: var(--accent);
  font-weight: 650;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.hero,
.card,
.content-block {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.hero {
  padding: 26px 28px;
  margin-bottom: 20px;
}

.card,
.content-block {
  padding: 22px;
  margin: 18px 0;
}

h1,
h2,
h3 {
  color: #111827;
  line-height: 1.2;
}

h1 {
  margin: 0 0 8px;
  font-size: 2rem;
}

h2 {
  margin: 0 0 14px;
  font-size: 1.35rem;
}

h3 {
  margin: 22px 0 10px;
  font-size: 1.08rem;
}

.lede,
.intro-block {
  max-width: 780px;
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.article-date {
  margin: 0 0 8px;
  color: var(--muted);
  font-weight: 700;
}

.article-intro {
  margin: 0 0 18px;
  padding: 14px 16px;
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  color: #344054;
}

.content-block p,
.card p,
article p,
.section-content p {
  margin: 0.35em 0;
  line-height: 1.4;
}

.content-block ul,
.content-block ol,
article ul,
article ol {
  margin: 0.6em 0 0.6em 1.25em;
  padding: 0;
}

.content-block li,
article li {
  margin: 0.28em 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  background: var(--panel);
  font-size: 0.95rem;
}

th,
td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--accent-soft);
  color: #183552;
  font-weight: 700;
}

.index-table td:last-child,
.index-table th:last-child,
.attachment-table td:last-child,
.attachment-table th:last-child {
  width: 90px;
  text-align: center;
}

details {
  margin: 14px 0;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
}

summary {
  cursor: pointer;
  padding: 14px 16px;
  background: var(--accent-soft);
  color: #183552;
  font-weight: 700;
}

.section-content {
  padding: 16px;
}

.plain-text {
  white-space: pre-wrap;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92rem;
}

.meta {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 6px 16px;
  margin: 18px 0 0;
  font-size: 0.95rem;
}

.meta dt {
  color: var(--muted);
  font-weight: 700;
}

.meta dd {
  margin: 0;
}

.foi-footer {
  margin-top: 40px;
  padding-top: 15px;
  font-size: 0.85rem;
  color: #555;
}

.foi-footer hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin-bottom: 10px;
}

.foi-footer p {
  margin: 0.35em 0;
  line-height: 1.4;
}

.back-link {
  display: inline-block;
  margin-top: 20px;
}

@media (max-width: 680px) {
  .container {
    padding: 18px 14px 42px;
  }

  .top-nav {
    display: block;
  }

  .nav-links {
    margin-top: 10px;
  }

  .hero,
  .card,
  .content-block {
    padding: 18px;
  }

  h1 {
    font-size: 1.65rem;
  }

  .meta {
    grid-template-columns: 1fr;
  }

  th,
  td {
    padding: 8px;
  }
}