* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Charter, Cambria, "Times New Roman", serif;
  color: #222;
  line-height: 1.65;
  background: #fff;
}

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */

.header {
  border-bottom: 3px solid #1f4e79;
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  padding: 18px 0 14px;
}

.site-name {
  font-size: 2rem;
  font-weight: bold;
  color: #1f4e79;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.site-name span {
  font-weight: normal;
  color: #555;
  font-size: 0.85rem;
  margin-left: 8px;
}

.nav a {
  font-family: Verdana, Arial, sans-serif;
  font-size: 0.82rem;
  color: #222;
  text-decoration: none;
  margin-left: 18px;
}

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

.nav a.current {
  color: #1f4e79;
  font-weight: bold;
}

/* Content */

.main {
  padding: 30px 0 50px;
}

h1 {
  font-size: 1.7rem;
  font-weight: normal;
  margin: 0 0 6px;
  color: #1f4e79;
}

.subtitle {
  color: #555;
  margin: 0 0 28px;
  font-style: italic;
}

h2 {
  font-size: 1.2rem;
  margin: 36px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid #d8d8d8;
  color: #1f4e79;
  font-weight: bold;
}

p {
  margin: 0 0 14px;
}

ul {
  margin: 0 0 14px;
  padding-left: 22px;
}

li {
  margin-bottom: 6px;
}

a {
  color: #1f4e79;
}

/* Facts table */

table {
  border-collapse: collapse;
  width: 100%;
  margin: 10px 0 20px;
  font-size: 0.95rem;
}

th, td {
  text-align: left;
  padding: 8px 12px;
  border: 1px solid #d8d8d8;
  vertical-align: top;
}

th {
  background: #f5f5f3;
  font-family: Verdana, Arial, sans-serif;
  font-size: 0.8rem;
  font-weight: bold;
  white-space: nowrap;
}

/* Highlight box */

.notice {
  background: #f5f5f3;
  border-left: 4px solid #1f4e79;
  padding: 14px 18px;
  margin: 20px 0;
}

.notice p:last-child {
  margin-bottom: 0;
}

/* Two-column definition list */

dl {
  margin: 0 0 14px;
}

dt {
  font-weight: bold;
  margin-top: 14px;
}

dd {
  margin: 4px 0 0 0;
}

/* Footer */

.footer {
  border-top: 1px solid #d8d8d8;
  background: #f5f5f3;
  font-family: Verdana, Arial, sans-serif;
  font-size: 0.78rem;
  color: #555;
}

.footer-inner {
  padding: 18px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
}

.footer a {
  color: #555;
}

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    gap: 8px;
  }

  .nav a {
    margin: 0 14px 0 0;
  }
}