:root {
  color-scheme: light;
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-alt: #f1f5f9;
  --border: #cbd5e1;
  --text: #172033;
  --muted: #475569;
  --accent: #15803d;
  --accent-blue: #2563eb;
  --warn: #a16207;
  --danger: #dc2626;
  --code-bg: #f8fafc;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  font-size: 15px;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  border-bottom: 1px solid var(--border);
  background-color: var(--surface);
  padding: 24px 0;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand h1 {
  margin: 0;
  font-size: 22px;
  font-family: var(--font-mono);
  letter-spacing: -0.3px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  font-family: var(--font-mono);
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--accent);
}

.badge-cve {
  color: var(--danger);
  border-color: rgba(248, 81, 73, 0.4);
}

.subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  max-width: 780px;
}

nav.top-nav {
  display: flex;
  gap: 16px;
  font-size: 14px;
}

main {
  padding: 28px 0 60px;
}

section {
  margin-bottom: 36px;
}

h2 {
  font-size: 18px;
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

h3 {
  font-size: 15px;
  margin: 18px 0 8px;
  color: var(--text);
}

.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 18px;
  margin-bottom: 16px;
}

.notice {
  background: rgba(210, 153, 34, 0.10);
  border: 1px solid #d29922;
  border-radius: 6px;
  padding: 12px 14px;
  margin: 0 0 16px;
  font-size: 13px;
  color: var(--muted);
}

.notice strong {
  color: var(--text);
}

.url-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--muted);
}

.url-bar input {
  flex: 1;
  min-width: 260px;
  padding: 6px 10px;
  background: var(--code-bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.tab-btn {
  background: var(--surface-alt);
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
}

.tab-btn.active {
  background: var(--accent-blue);
  color: #ffffff;
  border-color: var(--accent-blue);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.code-block {
  position: relative;
  background-color: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 12px 76px 12px 14px;
  margin: 8px 0 14px;
  overflow-x: auto;
}

.code-block pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  white-space: pre;
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--surface-alt);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 12px;
  font-family: var(--font-mono);
  cursor: pointer;
}

.copy-btn:hover {
  border-color: var(--accent-blue);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

.download-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.download-item h3 {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 14px;
}

.download-item p {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--muted);
}

.btn-download {
  display: inline-block;
  text-align: center;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--accent-blue);
  padding: 7px 12px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.btn-download:hover {
  background: var(--border);
  text-decoration: none;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  background: var(--surface);
  border: 1px solid var(--border);
}

th, td {
  text-align: left;
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  background: var(--surface-alt);
  color: var(--text);
  font-weight: 600;
}

code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  background: var(--code-bg);
  padding: 2px 5px;
  border-radius: 3px;
  border: 1px solid var(--border);
}

footer {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

/* Accessibility / SEO: visually hidden skip link that becomes visible on focus */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--accent-blue);
  color: #ffffff;
  padding: 8px 14px;
  border-radius: 0 0 6px 0;
  font-weight: 600;
}

.skip-link:focus {
  left: 0;
}

#about ul {
  margin: 0;
  padding-left: 20px;
  font-size: 14px;
  color: var(--muted);
}

#about li {
  margin-bottom: 6px;
}

#faq .card h3 {
  margin-top: 0;
}

#faq .card {
  margin-bottom: 12px;
}

figure {
  margin: 0;
}

figcaption {
  color: var(--muted);
  font-size: 13px;
}