:root {
  --background: #f4f6f8;
  --foreground: #111111;
  --muted: #6b7280;
  --surface: #ffffff;
  --border: #e5e7eb;
  --accent: #009fde;
  --accent-glow: rgba(0, 159, 222, 0.35);
  --radius-lg: 1.25rem;
  --radius-xl: 1.5rem;
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04),
    0 8px 24px -6px rgba(15, 23, 42, 0.08);
}

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

html {
  height: 100%;
}

body {
  margin: 0;
  min-height: 100%;
  background: var(--background);
  color: var(--foreground);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page {
  min-height: 100vh;
  background-color: var(--background);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 159, 222, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(17, 17, 17, 0.03), transparent);
}

.wrap {
  width: 100%;
  max-width: 48rem;
  margin: 0 auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.875rem;
  padding-bottom: 0.875rem;
}

.logo {
  flex-shrink: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.nav__wide {
  display: none;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
}

.btn-ghost:hover,
.btn-ghost.is-current {
  color: var(--foreground);
  background: rgba(15, 23, 42, 0.04);
}

.btn-secondary {
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--foreground);
  background: var(--surface);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: #f9fafb;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-width: 11.25rem;
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.9375rem;
  color: #fff;
  background: var(--accent);
  box-shadow: 0 4px 16px -2px var(--accent-glow);
}

.btn-primary:hover {
  filter: brightness(1.05);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-width: 11.25rem;
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--foreground);
  background: var(--surface);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background: #f9fafb;
}

.site-main {
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.eyebrow {
  margin: 0 0 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}

.page-title {
  margin: 0 0 0.75rem;
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.lede,
.meta-date {
  margin: 0 0 2.5rem;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.6;
}

.lede {
  font-size: 1rem;
}

.card {
  border-radius: var(--radius-xl);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}

.card--intro {
  padding: 1.5rem;
  margin-bottom: 2.5rem;
  font-size: 0.875rem;
  color: #374151;
  line-height: 1.7;
}

.card--intro p {
  margin: 0 0 1rem;
}

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

.card--pad {
  padding: 1.25rem;
}

.card--pad-lg {
  padding: 1.5rem;
}

.meta-list {
  display: grid;
  gap: 0.5rem 1rem;
  margin: 1rem 0 0;
  font-size: 0.875rem;
}

.meta-list dt {
  font-weight: 600;
  color: var(--foreground);
}

.meta-list dd {
  margin: 0;
}

.stack-dt {
  margin: 0;
}

.stack-dt > div {
  margin-bottom: 0.75rem;
}

.stack-dt > div:last-child {
  margin-bottom: 0;
}

.stack-dt dt {
  font-weight: 600;
  color: var(--foreground);
}

.stack-dt dd {
  margin: 0;
  color: #374151;
}

.section {
  margin-bottom: 2.5rem;
}

.section h2,
.block-title {
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  font-size: 1.125rem;
  font-weight: 700;
  border-bottom: 1px solid var(--border);
}

.section-body {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 0.875rem;
  color: #374151;
  line-height: 1.7;
}

.section-body p,
.prose p {
  margin: 0;
}

.section-body ul,
.prose ul,
.plain-list {
  margin: 0;
  padding-left: 1.25rem;
}

.section-body li,
.prose li,
.plain-list li {
  margin-bottom: 0.5rem;
}

.section-body li:last-child,
.prose li:last-child {
  margin-bottom: 0;
}

.link {
  color: var(--accent);
  font-weight: 500;
}

.link:hover {
  text-decoration: underline;
}

.contact-card {
  padding: 1.25rem;
  margin: 1rem 0;
}

.fineprint {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--muted);
}

.faq {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 0 0 3rem;
}

.faq h2 {
  margin: 0 0 1.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  border: 0;
  padding: 0;
}

.faq h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
}

.muted {
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

.feature-grid {
  display: grid;
  gap: 1rem;
  margin: 0 0 3rem;
}

.feature-grid h2 {
  grid-column: 1 / -1;
  margin: 0 0 0;
  font-size: 1.25rem;
  font-weight: 700;
  border: 0;
  padding: 0;
}

.feature-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.related-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.related-links li {
  margin-bottom: 0.5rem;
}

.prose {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  font-size: 0.875rem;
  color: #374151;
  line-height: 1.7;
}

.prose h3 {
  margin: 0 0 0.75rem;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--foreground);
}

.article {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.steps {
  margin: 0;
  padding-left: 1.25rem;
}

.steps li {
  margin-bottom: 0.75rem;
}

.note {
  margin: 1rem 0 0;
  font-size: 0.75rem;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.footer-nav a:hover {
  color: var(--accent);
}

@media (min-width: 640px) {
  .wrap {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .nav__wide,
  .btn-secondary {
    display: inline-flex;
  }

  .site-main {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }

  .page-title {
    font-size: 2.25rem;
  }

  .card--intro {
    padding: 2rem;
  }

  .meta-list {
    grid-template-columns: auto 1fr;
  }

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

  .feature-grid h2 {
    grid-column: 1 / -1;
  }

  .actions {
    flex-direction: row;
  }

  .btn-primary,
  .btn-outline {
    width: auto;
  }

  .site-footer__inner {
    flex-direction: row;
  }
}