:root {
  color-scheme: light;
  --background: #f7f8fb;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --link: #2563eb;
  --link-hover: #1d4ed8;
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

.page {
  width: 100%;
  max-width: 920px;
  margin: 0 auto;
  padding: 32px 16px 64px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 32px;
  box-shadow: var(--shadow);
}

.header {
  display: grid;
  gap: 24px;
  align-items: start;
  padding-bottom: 24px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  grid-template-columns: minmax(0, 1fr) minmax(280px, 40%);
}

.site-logo {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin-bottom: 18px;
  text-decoration: none;
}

.site-logo img {
  display: block;
  width: 160px;
  height: auto;
}


h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
}

.language-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.language-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--link);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  transition: background 150ms ease, color 150ms ease, border-color 150ms ease;
}

.language-nav a:hover,
.language-nav a:focus-visible {
  color: var(--link-hover);
  border-color: #bfdbfe;
  background: #eff6ff;
}

.language-nav a[aria-current="page"] {
  color: var(--text);
  background: #f3f4f6;
  border-color: #d1d5db;
}

.content {
  font-size: 1rem;
}

.content h1 {
  display: none;
}

.content h2 {
  margin-top: 2.2rem;
  margin-bottom: 0.7rem;
  font-size: 1.35rem;
  line-height: 1.25;
}

.content h3 {
  margin-top: 1.6rem;
  margin-bottom: 0.6rem;
  font-size: 1.1rem;
  line-height: 1.3;
}

.content p {
  margin: 0 0 1rem;
}

.content ul,
.content ol {
  padding-left: 1.4rem;
  margin-top: 0.4rem;
  margin-bottom: 1rem;
}

.content li {
  margin-bottom: 0.4rem;
}

.content a {
  color: var(--link);
  font-weight: 600;
}

.content a:hover,
.content a:focus-visible {
  color: var(--link-hover);
}

.content code {
  background: #f3f4f6;
  padding: 0.15rem 0.35rem;
  border-radius: 6px;
  font-size: 0.95em;
}

.content blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.2rem;
  border-left: 4px solid #d1d5db;
  background: #f9fafb;
  color: #374151;
}

.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  overflow-x: auto;
}

.content th,
.content td {
  border: 1px solid var(--border);
  padding: 0.65rem;
  text-align: left;
  vertical-align: top;
}

.content th {
  background: #f9fafb;
}

.noscript-notice {
  margin-top: 24px;
  padding: 16px;
  border: 1px solid #fbbf24;
  border-radius: 16px;
  background: #fffbeb;
}

.footer {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 700px) {
  .page {
    padding: 16px 12px 40px;
  }

  .card {
    padding: 22px;
    border-radius: 18px;
  }

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

  .language-nav {
    margin-top: 18px;
  }
}