:root {
  color-scheme: dark;
  --bg: #07080b;
  --panel: #11131a;
  --panel-2: #171a23;
  --text: #f5f1e8;
  --muted: #b7b0a4;
  --line: rgba(245, 241, 232, 0.14);
  --gold: #d6b56d;
  --green: #79f2bb;
  --blue: #8fb9ff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

a {
  color: inherit;
}

.wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0;
}

.brand img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
}

.hero {
  padding: 72px 0 48px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 48px;
  align-items: start;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 0.98;
  letter-spacing: 0;
}

.lede {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 2.2vw, 22px);
  max-width: 780px;
}

.summary {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 22px;
  border-radius: 8px;
}

.summary h2 {
  margin: 0 0 12px;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.summary ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.summary li + li {
  margin-top: 8px;
}

.content {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  padding: 28px 0 80px;
}

article {
  min-width: 0;
}

section {
  padding: 34px 0;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 16px;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin: 26px 0 8px;
  font-size: 20px;
}

p {
  margin: 0 0 16px;
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0 4px;
}

.card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: 18px;
}

.card strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
}

.example {
  border-left: 3px solid var(--gold);
  background: var(--panel-2);
  padding: 18px 20px;
  margin: 22px 0;
  color: var(--text);
}

.example code {
  white-space: normal;
}

.toc {
  position: sticky;
  top: 20px;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: 18px;
}

.toc h2 {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.toc a {
  display: block;
  padding: 7px 0;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}

.faq details {
  border-top: 1px solid var(--line);
  padding: 16px 0;
}

.faq summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 700;
}

.faq p {
  margin-top: 10px;
}

.cta {
  border: 1px solid rgba(214, 181, 109, 0.45);
  background: rgba(214, 181, 109, 0.08);
  border-radius: 8px;
  padding: 24px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 6px;
  background: var(--gold);
  color: #0b0c10;
  font-weight: 800;
  text-decoration: none;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 46px;
  color: var(--muted);
  font-size: 14px;
}

.library-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 20px 0 72px;
}

.library-card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: 22px;
  text-decoration: none;
}

.library-card span {
  display: block;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.library-card h2 {
  font-size: 24px;
  margin-bottom: 12px;
}

@media (max-width: 860px) {
  .wrap {
    width: min(100% - 28px, 680px);
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .content,
  .library-grid,
  .cards {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 44px;
    gap: 24px;
  }

  .toc {
    position: static;
  }
}