/* Web App Store — статья (общий стиль) */
:root {
  --ink: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --brand: #229cff;
  --brand-2: #0a6cff;
  --grad: linear-gradient(135deg, #229cff 0%, #0a6cff 100%);
  --radius: 16px;
  --nav-h: 64px;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--brand-2);
}

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

.wrap {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  height: var(--nav-h);
}

.nav-logo {
  color: var(--ink);
}

.nav-logo .logo-mark {
  box-shadow: 0 4px 12px rgba(34, 156, 255, 0.35);
}

.nav-cta {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 6px 16px -6px rgba(34, 156, 255, 0.55);
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px -6px rgba(34, 156, 255, 0.65);
}

/* ---------- Breadcrumbs ---------- */
.breadcrumbs {
  font-size: 13px;
  color: var(--muted);
  padding: 20px 0 0;
}

.breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.breadcrumbs li + li::before {
  content: '›';
  color: #cbd5e1;
}

/* ---------- Article ---------- */
.article {
  padding: 28px 0 48px;
}

.article-header {
  margin-bottom: 28px;
}

.eyebrow {
  color: var(--brand-2);
}

.lead {
  color: var(--muted);
  max-width: 620px;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.meta span {
  font-size: 12.5px;
  color: var(--muted);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
}

.article h2 {
  margin: 36px 0 16px;
}

.article h3 {
  margin-top: 26px;
}

.article p {
  margin: 0 0 16px;
  color: #1f2937;
}

.article strong {
  color: #111827;
}

.article ul,
.article ol {
  margin: 0 0 16px 22px;
}

.article li {
  margin-bottom: 8px;
}

.article li::marker {
  color: var(--brand-2);
}

/* ---------- Callout ---------- */
.callout {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  margin: 24px 0;
  border-radius: var(--radius);
  border: 1px solid;
  font-size: 15px;
}

.callout-icon {
  font-size: 22px;
  line-height: 1;
  flex: none;
}

.callout-info {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1e40af;
}

.callout-safety {
  background: #f0fdf4;
  border-color: #bbf7d0;
  color: #166534;
}

.callout-warn {
  background: #fffbeb;
  border-color: #fde68a;
  color: #92400e;
}

/* ---------- CTA ---------- */
.cta {
  margin: 36px 0;
  padding: 28px 24px;
  border-radius: 20px;
  text-align: center;
  background:
    radial-gradient(500px 260px at 85% -20%, rgba(124, 196, 255, 0.5), transparent 60%),
    radial-gradient(500px 260px at 10% 120%, rgba(34, 156, 255, 0.5), transparent 60%),
    linear-gradient(135deg, #111830, #0a0e1a);
  color: #fff;
}

.cta h2 {
  color: #fff;
  margin: 0 0 10px;
}

.cta p {
  color: rgba(255, 255, 255, 0.72);
  margin: 0 auto 22px;
  max-width: 460px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 26px;
  border-radius: 14px;
  font-size: 15.5px;
  font-weight: 600;
  text-decoration: none;
  min-height: 48px;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 10px 26px -8px rgba(34, 156, 255, 0.7);
}

.btn-primary:hover {
  transform: translateY(-2px);
}

.btn-light {
  background: #fff;
  color: #111827;
}

/* ---------- Related ---------- */
.related {
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.related h2 {
  font-size: 20px;
  margin: 0 0 16px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.related a {
  display: block;
  padding: 16px 18px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 14px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  font-size: 14.5px;
  transition:
    border-color 0.2s,
    transform 0.2s;
}

.related a:hover {
  border-color: rgba(34, 156, 255, 0.4);
  transform: translateY(-2px);
}

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--line);
  padding: 32px 0 40px;
  color: var(--muted);
  font-size: 13.5px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

.footer-inner a {
  color: var(--muted);
  text-decoration: none;
}

.footer-inner a:hover {
  color: var(--ink);
}

/* ---------- Responsive ---------- */
@media (max-width: 560px) {
  .article {
    padding: 20px 0 36px;
  }

  .cta {
    padding: 24px 18px;
  }

  .btn {
    width: 100%;
  }
}