:root {
  --green: #2d8f7a;
  --green-dark: #1f6b5c;
  --text: #1a2e2a;
  --text-muted: #4a5f5a;
  --text-light: #7a8f8a;
  --bg: #f4f7f6;
  --card: #ffffff;
  --border: #e8efec;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a {
  color: var(--green-dark);
}

header {
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
  color: #fff;
  padding: 28px 20px 24px;
  text-align: center;
}

header a {
  color: #fff;
  text-decoration: none;
}

header .brand {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

header .tagline {
  margin: 8px 0 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 16px;
  margin-top: 16px;
  font-size: 14px;
}

nav a {
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
}

nav a[aria-current="page"] {
  font-weight: 600;
  text-decoration: underline;
}

nav .lang-switch {
  margin-left: 4px;
  padding-left: 16px;
  border-left: 1px solid rgba(255, 255, 255, 0.35);
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.card {
  background: var(--card);
  border-radius: 16px;
  padding: 32px 28px;
  box-shadow: 0 4px 24px rgba(26, 46, 42, 0.08);
}

h1 {
  margin: 0 0 8px;
  font-size: 24px;
  font-weight: 600;
}

.updated {
  margin: 0 0 24px;
  font-size: 13px;
  color: var(--text-light);
}

h2 {
  margin: 28px 0 10px;
  font-size: 17px;
  font-weight: 600;
  color: var(--green-dark);
}

p,
ul {
  margin: 0 0 14px;
  font-size: 15px;
  color: var(--text-muted);
}

ul {
  padding-left: 1.25rem;
}

li {
  margin-bottom: 6px;
}

.lang-divider {
  margin: 36px 0 28px;
  border: 0;
  border-top: 1px solid var(--border);
}

.lang-label {
  margin: 0 0 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-light);
}

footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px 32px;
  text-align: center;
  font-size: 12px;
  color: var(--text-light);
}

@media (max-width: 600px) {
  .card {
    padding: 24px 18px;
  }

  h1 {
    font-size: 21px;
  }
}