:root { --w: 980px; }
header { padding: 22px 0 10px; }
.hero {
  padding: 22px;
  position: relative;
  overflow: hidden;
}

.hero:before {
  content: "";
  position: absolute;
  inset: -2px;
  background:
    radial-gradient(700px 260px at 28% 0%, rgba(124, 92, 255, .28), transparent 60%),
    radial-gradient(520px 240px at 92% 22%, rgba(34, 211, 238, .20), transparent 62%),
    radial-gradient(520px 260px at 70% 92%, rgba(52, 211, 153, .10), transparent 65%);
  pointer-events: none;
}

.hero>* { position: relative; }

h1 {
  margin: 14px 0 10px;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.12;
  letter-spacing: -.4px;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.65;
  max-width: 74ch;
}

.box { padding: 18px; }

.section-title { margin: 2px 0 10px; }

.callout {
  padding: 14px;
  border-radius: 16px;
  border: 1px solid rgba(36, 52, 95, .85);
  background: rgba(7, 11, 22, .35);
  color: var(--muted);
  line-height: 1.65;
}

.callout b { color: var(--text); }

pre {
  margin: 12px 0 0;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid rgba(36, 52, 95, .85);
  background: rgba(7, 11, 22, .55);
  overflow: auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .25);
}

code {
  font-family: var(--mono);
  font-size: 12.8px;
  color: #dbe6ff;
}

.note {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.65;
  margin-top: 10px;
}

.more-articles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.nav-home .icon{
  width: 18px;
  height: 18px;
  display: block;
}

@media (min-width: 860px) {
  .more-articles {
    grid-template-columns: 1fr 1fr;
  }
}

.article-nav .nav-home{
  display: inline-flex;
}
.article-nav .nav-home-text{
  display: inline;
}

@media (max-width: 860px){
  /* Шапка: бренд сверху, меню отдельной строкой */
  .nav .row{ flex-wrap: wrap; }

  /* Меню статей — одной линией, со скроллом */
  .article-nav{
    flex: 1 1 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    justify-content: flex-start;
    gap: 8px;
  }
  .article-nav::-webkit-scrollbar{ height: 0; }

  /* Кнопка домой не должна переноситься/сжиматься */
  .article-nav .nav-home{
    flex: 0 0 auto;
    white-space: nowrap;
  }
}