:root {
  --brand: #6c2bd9;
  --brand-dark: #5521b0;
  --bg: #f6f7fb;
  --text: #1a1a2e;
  --muted: #5c5c7a;
  --card: #ffffff;
  --border: #e8e8f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

header {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
  color: #fff;
  padding: 1.5rem 1.25rem 1.75rem;
}

header .wrap,
main .wrap,
footer .wrap {
  max-width: 720px;
  margin: 0 auto;
}

header h1 {
  margin: 0 0 0.35rem;
  font-size: 1.5rem;
  font-weight: 800;
}

header p {
  margin: 0;
  opacity: 0.92;
  font-size: 0.95rem;
}

nav.top {
  margin-top: 1rem;
  font-size: 0.875rem;
}

nav.top a {
  color: #fff;
  margin-right: 1rem;
  text-decoration: underline;
  text-underline-offset: 2px;
}

main {
  padding: 1.5rem 1.25rem 2.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.35rem;
  margin-bottom: 1rem;
  box-shadow: 0 1px 3px rgba(26, 26, 46, 0.06);
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  color: var(--brand);
}

.card p,
.card li {
  color: var(--text);
  font-size: 0.95rem;
}

.card ul {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
}

.lang-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.lang-tabs a {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--brand);
}

.lang-tabs a:hover {
  border-color: var(--brand);
}

section[lang] {
  scroll-margin-top: 1rem;
}

.edit-note {
  font-size: 0.8rem;
  color: var(--muted);
  background: #f0ecfa;
  border: 1px dashed #c9b8f0;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 1.25rem;
}

.edit-note code {
  font-size: 0.78rem;
  background: #fff;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

footer {
  padding: 0 1.25rem 2rem;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

footer a {
  color: var(--brand);
}