:root {
  color-scheme: light dark;
  --bg: #f7f5ff;
  --surface: #ffffff;
  --surface-soft: #f0ecff;
  --text: #171438;
  --muted: #5f597b;
  --line: #ddd5fa;
  --purple: #672be7;
  --pink: #e83e91;
  --cyan: #13a8c7;
  --focus: #087da0;
  --shadow: 0 18px 60px rgba(54, 26, 119, 0.12);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0b18;
    --surface: #171329;
    --surface-soft: #211b3c;
    --text: #fbfaff;
    --muted: #c1b9d8;
    --line: #382e5f;
    --purple: #a782ff;
    --pink: #ff65ad;
    --cyan: #5ed6ea;
    --focus: #8fe8f7;
    --shadow: 0 20px 70px rgba(0, 0, 0, 0.3);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--purple) 8%, transparent), transparent 38%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: var(--purple);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--pink);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 12px;
  left: 12px;
  padding: 8px 12px;
  transform: translateY(-150%);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  min-height: 80px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 19px;
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 9px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.hero {
  overflow: hidden;
  position: relative;
  padding: clamp(38px, 7vw, 76px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 7px;
  background: linear-gradient(var(--cyan), var(--purple), var(--pink));
  content: "";
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--pink);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.18;
}

h1 {
  max-width: 800px;
  margin: 0;
  font-size: clamp(36px, 6vw, 64px);
}

.lead {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2.5vw, 21px);
}

.meta {
  margin: 16px 0 0;
  color: var(--purple);
  font-size: 14px;
  font-weight: 700;
}

.layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(26px, 5vw, 64px);
  padding: 54px 0 80px;
}

.toc {
  align-self: start;
  position: sticky;
  top: 20px;
}

.toc strong {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  text-transform: uppercase;
}

.toc a {
  display: block;
  padding: 5px 0;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.content {
  min-width: 0;
}

.section {
  padding: 0 0 38px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 38px;
}

.section:last-child {
  border-bottom: 0;
}

.section h2 {
  margin: 0 0 14px;
  font-size: clamp(24px, 4vw, 32px);
}

.section h3 {
  margin: 25px 0 8px;
  font-size: 18px;
}

.section p {
  margin: 10px 0;
  color: var(--muted);
}

.section li {
  margin: 8px 0;
  color: var(--muted);
}

.callout {
  margin: 22px 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-left: 5px solid var(--pink);
  border-radius: 6px;
  background: var(--surface-soft);
}

.callout strong {
  display: block;
  margin-bottom: 4px;
}

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

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 7px;
  background: var(--purple);
  color: #ffffff;
  font-weight: 800;
  text-decoration: none;
}

.button:hover {
  background: var(--pink);
  color: #ffffff;
}

.button.secondary {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
}

.faq {
  margin: 0;
}

.faq > div {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.faq dt {
  font-size: 19px;
  font-weight: 800;
}

.faq dd {
  margin: 7px 0 0;
  color: var(--muted);
}

.footer {
  padding: 24px 0 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 18px 0;
  }

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

  .toc {
    display: none;
  }

  .hero {
    padding: 36px 26px;
  }
}