:root {
  color-scheme: dark;
  --page: #090909;
  --surface: #131316;
  --surface-2: #1a1a1e;
  --ink: #f5f5f5;
  --muted: #a1a1aa;
  --line: rgba(255, 255, 255, 0.14);
  --accent: #f5f5f5;
  --radius: 14px;
  --shell: 1040px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -999px;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(9, 9, 9, 0.92);
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  z-index: 5;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 64px;
  flex-wrap: wrap;
}

.nav .brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-left: auto;
  font-size: 14px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--ink);
}

main {
  display: block;
  padding: 40px 0 56px;
}

.hero {
  max-width: 780px;
}

.breadcrumbs {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 14px;
}

.breadcrumbs a {
  color: var(--muted);
}

h1 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  line-height: 1.15;
  margin: 0 0 16px;
}

h2 {
  font-size: 1.35rem;
  margin: 44px 0 12px;
}

h3 {
  font-size: 1.05rem;
  margin: 24px 0 6px;
}

p {
  margin: 0 0 14px;
}

.lead {
  font-size: 1.08rem;
  color: #d4d4d8;
}

.muted {
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 24px 0 8px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-weight: 600;
  background: var(--surface-2);
}

.button.primary {
  background: var(--accent);
  color: #090909;
  border-color: var(--accent);
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin: 20px 0 8px;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: var(--surface);
}

.card h3 {
  margin-top: 0;
}

.card p:last-child,
.card ul:last-child {
  margin-bottom: 0;
}

ul,
ol {
  padding-left: 20px;
  margin: 0 0 14px;
}

li {
  margin-bottom: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 18px;
  font-size: 0.96rem;
}

th,
td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 600;
}

.faq-rows {
  display: grid;
  gap: 12px;
  margin-top: 8px;
}

.faq-row {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  background: var(--surface);
}

.faq-row h3 {
  margin: 0 0 6px;
}

.faq-row p {
  margin: 0;
}

.bridge {
  margin: 44px 0 0;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 20px 22px;
  background: var(--surface-2);
}

.bridge h2 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.bridge p {
  color: #d4d4d8;
}

.related {
  margin-top: 44px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.related ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  list-style: none;
  padding: 0;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 10px;
}

.footer-links a {
  color: var(--muted);
}