:root {
  --text: #1c1c1e;
  --muted: #636366;
  --accent: #007aff;
  --bg: #ffffff;
  --border: #e5e5ea;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
}

header {
  border-bottom: 1px solid var(--border);
  padding: 20px 24px;
  max-width: 720px;
  margin: 0 auto;
}

.header-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

header h1 {
  margin: 0 0 6px;
  font-size: 1.5rem;
}

header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

nav.lang {
  margin-top: 12px;
  font-size: 0.9rem;
}

nav.lang a {
  color: var(--accent);
  margin-right: 16px;
}

.language-switcher {
  display: inline-flex;
  flex: 0 0 auto;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #f7f7f8;
}

.language-switcher button {
  min-width: 42px;
  min-height: 34px;
  padding: 6px 10px;
  border: 0;
  border-radius: 7px;
  color: var(--muted);
  background: transparent;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.language-switcher button.is-active {
  color: var(--text);
  background: var(--bg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.language-switcher button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
}

h2 {
  font-size: 1.15rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

h3 {
  font-size: 1rem;
  margin-top: 1.25rem;
}

p, li { margin: 0.6rem 0; }

ul { padding-left: 1.25rem; }

footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}

a { color: var(--accent); }

.status {
  display: inline-block;
  margin: 0 0 0.5rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: #f7f7f8;
  font-size: 0.85rem;
  font-weight: 600;
}

[hidden] { display: none !important; }

@media (max-width: 480px) {
  .header-top {
    gap: 12px;
  }

  .language-switcher button {
    min-width: 38px;
    padding-right: 8px;
    padding-left: 8px;
  }
}