/* Общие стили публичных страниц BrainOS */
:root {
  --navy: #021024;
  --navy-light: #0d2a4a;
  --text: #1a1a1a;
  --text-muted: #4a4a4a;
  --gray-light: #e8e8e8;
  --cloud-1: #021024;
  --cloud-2: #052659;
  --cloud-3: #5483B3;
  --cloud-4: #7DA0CA;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Montserrat Alternates', -apple-system, sans-serif;
  font-size: 12px;
  font-weight: 400;
  color: var(--text);
  background: #fff;
  line-height: 1.5;
}
.header {
  background: var(--navy);
  margin: 0 70px;
  padding: 20px 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  border-radius: 0 0 15px 15px;
}
.header .header-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; width: 100%; }
.header .nav-wrap { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.logo-row img {
  height: 50px;
  width: auto;
  display: block;
}
.nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.nav a {
  color: #fff;
  background: transparent;
  text-decoration: none;
  padding: 0.4rem 0.9rem;
  border: 1px solid #fff;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 400;
}
.nav a:hover {
  opacity: 0.9;
}
.nav a.active {
  background: #fff;
  color: #021024;
  border-color: #fff;
}
.nav a, .nav a:hover, .nav a.active {
  font-family: 'Montserrat Alternates', sans-serif;
}
.container {
  margin: 0 70px;
  padding: 20px 60px;
  font-size: 20px;
  font-weight: 500;
}
.content-narrow {
  max-width: 50%;
}
.two-col-row {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  margin: 2rem 0;
}
.two-col-row .col-text {
  flex: 1;
  min-width: 0;
}
.two-col-row .col-cloud {
  flex: 1;
  min-width: 0;
}
.hero {
  text-align: left;
  margin: 2.5rem 0 2rem;
}
.hero h1 {
  color: var(--navy);
  font-size: 35px;
  font-weight: 700;
  margin: 0;
  line-height: 1.25;
}
.hero .badge-beta {
  display: inline-block;
  background: var(--navy);
  color: #fff;
  font-size: 0.32em;
  font-weight: 600;
  line-height: 1;
  padding: 0.08em 0.28em;
  border-radius: 3px;
  vertical-align: top;
  margin-left: 0.2em;
}
.intro p {
  color: var(--text);
  margin: 0 0 1rem;
}
.intro strong { color: var(--navy); }
h2 {
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.75rem 0 0.75rem;
}
h3 { color: var(--text); font-size: 1rem; font-weight: 600; margin: 1.25rem 0 0.5rem; }
ul, ol {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}
li { margin: 0.35rem 0; }
.tag-cloud {
  margin: 1.5rem 0 2rem;
  padding: 1.5rem 0;
  min-height: 140px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.5rem 1rem;
}
.tag-cloud .word {
  display: inline-block;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.15s ease, transform 0.15s ease;
}
.tag-cloud .word:nth-child(4n+1) { color: var(--cloud-1); }
.tag-cloud .word:nth-child(4n+2) { color: var(--cloud-2); }
.tag-cloud .word:nth-child(4n+3) { color: var(--cloud-3); }
.tag-cloud .word:nth-child(4n+4) { color: var(--cloud-4); }
.tag-cloud .word:nth-child(3n+1) { transform: translateY(-4px); }
.tag-cloud .word:nth-child(3n+2) { transform: translateY(2px); }
.tag-cloud .word:nth-child(3n+3) { transform: translateY(-2px); }
.tag-cloud .word:hover {
  opacity: 0.85;
  transform: scale(1.05) !important;
}
.tag-cloud .word.size-0 { font-size: 0.8rem;  opacity: 0.75; }
.tag-cloud .word.size-1 { font-size: 0.95rem; opacity: 0.85; }
.tag-cloud .word.size-2 { font-size: 1.1rem;  opacity: 0.9; }
.tag-cloud .word.size-3 { font-size: 1.3rem;  opacity: 0.95; font-weight: 600; }
.tag-cloud .word.size-4 { font-size: 1.5rem;  opacity: 1;   font-weight: 700; }
.tag-cloud .word.size-5 { font-size: 1.75rem; opacity: 1;   font-weight: 700; }
.info-links {
  list-style: none;
  padding-left: 0;
}
.info-links li { margin: 0.5rem 0; }
.info-links a {
  color: var(--navy);
  text-decoration: underline;
}
.info-links a:hover { text-decoration: none; }
.link-primary {
  color: var(--navy);
  text-decoration: none;
}
.link-primary:hover {
  text-decoration: underline;
}
.meta {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.doc.content-narrow { max-width: 720px; }
.doc.content-narrow.doc-page { font-size: 15px; }
.doc.content-narrow.doc-page h1 { font-size: 25px; }
.doc.content-narrow.doc-page h2 { font-size: 20px; }
.doc-disclaimer { color: #c00; font-weight: 600; margin-bottom: 1.5rem; padding: 0.5rem 0; }
.doc-disclaimer p { margin: 0 0 0.5em; }
.doc-disclaimer p:last-child { margin-bottom: 0; }
.doc-meta { margin: 0 0 0.5rem; }
.toc { margin: 1rem 0 1.5rem; padding: 0.75rem 1rem; background: var(--gray-light); border-radius: 8px; font-size: 0.95rem; }
.toc a { color: var(--navy); }
.footer {
  background: var(--navy);
  color: #fff;
  margin: 3rem 70px 20px;
  padding: 20px 70px;
  border-radius: 15px;
  font-family: 'Montserrat Alternates', sans-serif;
  font-size: 12px;
  font-weight: 400;
}
.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 20px 0;
  position: relative;
}
.footer-top::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: rgba(255,255,255,0.25);
}
.footer-top .footer-img {
  height: 50px;
  width: auto;
  display: block;
  object-fit: contain;
}
.footer-bottom {
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  font-size: 12px;
  font-weight: 400;
  opacity: 0.95;
}
.footer-bottom .copy { font-size: 12px; opacity: 0.9; }
.lang-dropdown { position: relative; font-size: 12px; }
.lang-dropdown .lang-trigger { display: flex; align-items: center; gap: 0.35rem; padding: 0.35rem 0.6rem; border: 1px solid rgba(255,255,255,0.7); border-radius: 8px; background: transparent; color: #fff; cursor: pointer; font-family: inherit; }
.lang-dropdown .lang-trigger:hover { background: rgba(255,255,255,0.1); }
.lang-dropdown .lang-trigger .flag { font-size: 1.1em; }
.lang-dropdown .lang-panel { display: none; position: absolute; top: 100%; right: 0; margin-top: 0.25rem; background: var(--navy); border: 1px solid rgba(255,255,255,0.2); border-radius: 8px; padding: 0.35rem; min-width: 8rem; z-index: 100; box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
.lang-dropdown.open .lang-panel { display: block; }
.lang-dropdown .lang-panel a { display: flex; align-items: center; gap: 0.5rem; padding: 0.4rem 0.6rem; color: rgba(255,255,255,0.9); text-decoration: none; border-radius: 6px; }
.lang-dropdown .lang-panel a:hover { background: rgba(255,255,255,0.15); color: #fff; }
.lang-dropdown .lang-panel a .flag { font-size: 1.2em; }

@media (max-width: 900px) {
  .two-col-row {
    flex-direction: column;
  }
  .content-narrow {
    max-width: 100%;
  }
}
@media (max-width: 768px) {
  .header {
    margin: 0 16px;
    padding: 16px 20px;
    border-radius: 0 0 12px 12px;
  }
  .logo-row img {
    height: 40px;
  }
  .nav a {
    padding: 0.35rem 0.7rem;
    font-size: 11px;
  }
  .container {
    margin: 0 16px;
    padding: 16px 20px;
    font-size: 16px;
  }
  .content-narrow {
    max-width: 100%;
  }
  .two-col-row {
    gap: 1.5rem;
    margin: 1.5rem 0;
  }
  .hero {
    margin: 1.5rem 0 1rem;
  }
  .hero h1 {
    font-size: 24px;
  }
  h2 {
    font-size: 1rem;
  }
  .tag-cloud {
    margin: 1rem 0 1.5rem;
    padding: 1rem 0;
    min-height: 100px;
    gap: 0.35rem 0.6rem;
  }
  .tag-cloud .word.size-0 { font-size: 0.7rem; }
  .tag-cloud .word.size-1 { font-size: 0.8rem; }
  .tag-cloud .word.size-2 { font-size: 0.9rem; }
  .tag-cloud .word.size-3 { font-size: 1rem; }
  .tag-cloud .word.size-4 { font-size: 1.15rem; }
  .tag-cloud .word.size-5 { font-size: 1.3rem; }
  .footer {
    margin: 2rem 16px 16px;
    padding: 16px 20px;
    border-radius: 12px;
    font-size: 11px;
  }
  .footer-top {
    padding: 16px 0;
  }
  .footer-top .footer-img {
    height: 40px;
  }
  .footer-bottom {
    padding-top: 12px;
    font-size: 11px;
  }
  .footer-bottom .copy { font-size: 11px; }
}
@media (max-width: 480px) {
  .header {
    margin: 0 12px;
    padding: 12px 16px;
  }
  .nav {
    gap: 0.35rem;
  }
  .nav a {
    padding: 0.3rem 0.6rem;
    font-size: 10px;
  }
  .container {
    margin: 0 12px;
    padding: 12px 16px;
    font-size: 15px;
  }
  .hero h1 {
    font-size: 20px;
  }
  .footer {
    margin: 1.5rem 12px 12px;
    padding: 12px 16px;
  }
  .footer-top .footer-img {
    height: 36px;
  }
}