* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, sans-serif;
  max-width: 900px;
  margin: 2rem auto;
  line-height: 1.55;
  padding: 0 1rem;
  color: #1d1d1d;
  background: #ffffff;
}

h1,
h2,
h3 {
  margin: 0 0 0.5rem;
  color: #1d1d1d;
}

p,
ul,
table {
  margin-top: 0.5rem;
}

section {
  margin-top: 1.5rem;
}

nav {
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid #e5e5e5;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav-list li {
  margin: 0;
}

.lang-switch {
  margin-left: auto;
  font-size: 0.9rem;
  color: #666;
  white-space: nowrap;
}

.lang-switch a[aria-current='page'] {
  font-weight: 700;
  text-decoration: none;
}

.lang-switch a {
  text-decoration: none;
  color: inherit;
}

.lang-switch a:hover,
.lang-switch a:focus {
  color: #1d1d1d;
}

img {
  width: 180px;
  height: auto;
  border-radius: 10px;
  display: block;
  margin-bottom: 1rem;
}

ul {
  padding-left: 1.2rem;
}

li {
  margin: 0.3rem 0;
}

a {
  color: #264653;
  text-decoration: underline;
}

a:hover,
a:focus {
  color: #1f3944;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 0.45rem 0.2rem;
  border-bottom: 1px solid #e5e5e5;
}

.muted {
  color: #666;
}