:root {
  --bg: #f6f7f9;
  --card: #fff;
  --text: #1a1a1a;
  --muted: #5c6570;
  --accent: #007dc3;
  --accent-dark: #005a8c;
  --border: #e2e6ea;
  --nav: #0b1f33;
  --pro-red: #e31c23;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  font-size: 17px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }
.site-header {
  background: var(--nav);
  color: #fff;
  padding: 0.85rem 0;
  position: sticky; top: 0; z-index: 50;
  box-shadow: 0 1px 0 rgba(0,0,0,.15);
}
.site-header a { color: #fff; text-decoration: none; }
.site-header a:hover { text-decoration: underline; }
.site-header .wrap, .wrap-main {
  max-width: 1100px; margin: 0 auto;
  padding-left: 1.25rem; padding-right: 1.25rem;
  width: 100%; box-sizing: border-box;
}
.site-header .wrap {
  display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap;
}
.logo { font-weight: 700; letter-spacing: .02em; font-size: 1.05rem; color: #fff; }
.logo .pro { color: var(--pro-red); font-weight: 800; letter-spacing: .04em; }
.nav-cats { display: flex; flex-wrap: wrap; gap: .65rem 1rem; font-size: .9rem; opacity: .95; }
.wrap-main { padding-top: 1.25rem; padding-bottom: 3rem; }
.breadcrumbs { font-size: .88rem; color: var(--muted); margin: 0 0 1rem; }
.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--accent); }
.layout { display: grid; grid-template-columns: 240px 1fr; gap: 1.5rem; align-items: start; }
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .side { position: static !important; }
}
.side {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  position: sticky; top: 4.2rem;
  font-size: .9rem;
}
.side h3 { margin: 0 0 .6rem; font-size: .95rem; }
.side ul { list-style: none; margin: 0; padding: 0; }
.side li { margin: 0 0 .35rem; }
.side a { color: var(--text); }
.side a:hover { color: var(--accent); }
.side a.active { color: var(--accent); font-weight: 600; }
.side .cat-label {
  display:block; font-weight:600; margin: .75rem 0 .35rem;
  color: var(--muted); font-size:.8rem; text-transform:uppercase; letter-spacing:.04em;
}
.content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem 1.75rem 2rem;
}
.content h1 { margin: 0 0 .75rem; font-size: 1.75rem; line-height: 1.25; }
.content h2 { margin: 1.6rem 0 .65rem; font-size: 1.25rem; }
.content h3 { margin: 1.2rem 0 .5rem; font-size: 1.05rem; }
.content p { margin: 0 0 .9rem; }
.content ul, .content ol {
  list-style: none;
  margin: 0 0 1rem;
  padding-left: 0;
}
.content li {
  list-style: none;
  margin: .25rem 0;
  padding-left: 0;
}
/* no dashes/bullets in tech nav or lists inside site */
.gt-root ul,
.gt-root ol {
  list-style: none;
  padding-left: 0;
}
.gt-root li {
  list-style: none;
}
.gt-root .detail ul,
.gt-root .detail ol {
  list-style: none;
  padding-left: 0;
  margin: 0 0 1rem;
}
.content img {
  max-width: 100%; height: auto; border-radius: 10px;
  display: block; margin: .5rem 0 1.1rem; background: #eee;
}
.tech-nav {
  font-size: .95rem; color: var(--muted); margin-top: 1.5rem;
  padding-top: 1rem; border-top: 1px solid var(--border);
}
.badge {
  display:inline-block; font-size:.75rem; background:#e8f4fc; color:var(--accent-dark);
  padding:.15rem .5rem; border-radius:999px; margin-bottom:.75rem;
}
.preview { color: var(--muted); font-size: 1.02rem; margin-bottom: 1.25rem; }
.site-footer {
  max-width: 1100px; margin: 0 auto; padding: 1rem 1.25rem 2rem;
  font-size: .85rem; color: var(--muted);
}
.category-list { margin-top: .5rem; }
.cta-pick {
  margin: 2rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border, #e2e6ea);
  text-align: center;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  align-items: center;
}
.btn-pick {
  display: inline-block;
  background: #e31c23;
  color: #fff !important;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  text-decoration: none !important;
  font-size: 1rem;
  letter-spacing: .01em;
}
.btn-pick:hover {
  background: #c4161c;
  color: #fff !important;
  text-decoration: none !important;
}


/* === GT embed in Bitrix === */
/* When embedded in Aspro: don't paint whole site gray from our body rule */
.gt-root {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  font-size: 16px;
  line-height: 1.55;
}
.gt-root .wrap-main {
  background: transparent;
}
.gt-root .site-header,
.gt-root .site-footer {
  display: none !important;
}
.gt-root .layout {
  grid-template-columns: 240px 1fr;
  gap: 1.25rem;
}
@media (max-width: 860px) {
  .gt-root .layout { grid-template-columns: 1fr; }
}
.gt-root .side {
  position: sticky;
  top: 1rem;
  max-height: calc(100vh - 2rem);
  overflow: auto;
}
.gt-root .content {
  box-shadow: none;
}
.gt-root .breadcrumbs {
  margin-bottom: 0.75rem;
}

/* kill dash/bullet markers from Aspro global styles */
.gt-root ul li::before,
.gt-root ol li::before,
.gt-root .content li::before,
.gt-root .detail li::before,
.gt-root .side li::before {
  content: none !important;
  display: none !important;
}

/* === GT mobile nav === */
/* Desktop final: button hidden, side always visible */
.gt-nav-toggle {
  display: none;
  box-sizing: border-box;
  width: 100%;
  margin: 0 0 0.85rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border, #e2e6ea);
  border-radius: 12px;
  background: #fff;
  color: var(--text, #1a1a1a);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
  -webkit-tap-highlight-color: transparent;
  appearance: none;
  -webkit-appearance: none;
}
.gt-nav-toggle:hover,
.gt-nav-toggle:focus {
  border-color: var(--accent, #007dc3);
  outline: none;
}
.gt-nav-toggle-text { flex: 1; pointer-events: none; }
.gt-nav-toggle-icon {
  flex: 0 0 auto;
  width: 0.65rem;
  height: 0.65rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform .15s ease;
  margin-top: -0.2rem;
  opacity: 0.7;
  pointer-events: none;
}
.gt-nav-toggle.is-open .gt-nav-toggle-icon,
.gt-root.gt-nav-open .gt-nav-toggle-icon {
  transform: rotate(-135deg);
  margin-top: 0.2rem;
}

@media (max-width: 860px) {
  .gt-nav-toggle {
    display: flex !important;
  }

  /* Closed = menu hidden (articles default) */
  .gt-root.gt-nav-closed > .wrap-main .side,
  .gt-root.gt-nav-closed .layout > .side,
  .gt-root.gt-nav-closed nav.side {
    display: none !important;
  }

  /* Open = full menu (hub default + after button) */
  .gt-root.gt-nav-open > .wrap-main .side,
  .gt-root.gt-nav-open .layout > .side,
  .gt-root.gt-nav-open nav.side {
    display: block !important;
    position: static !important;
    max-height: none !important;
    overflow: visible !important;
    margin-bottom: 1rem;
  }

  /* If classes missing, treat as closed on mobile (safe default) */
  .gt-root:not(.gt-nav-open):not(.gt-nav-closed) .layout > .side,
  .gt-root:not(.gt-nav-open):not(.gt-nav-closed) nav.side {
    display: none !important;
  }
}