@media (max-width: 1280px) {
  :root {
    --container-max: 1140px;
  }

  .article {
    padding: 40px;
  }
}

@media (max-width: 1024px) {
  .header__inner {
    gap: 16px;
  }

  .nav {
    position: fixed;
    inset: var(--header-height) 16px auto;
    flex-direction: column;
    background: rgba(247, 248, 250, 0.96);
    backdrop-filter: blur(16px);
    padding: 24px;
    border-radius: 18px;
    box-shadow: 0 24px 60px rgba(17, 24, 38, 0.18);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-base);
  }

  body.dark-mode .nav {
    background: rgba(11, 16, 27, 0.96);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .burger {
    display: flex;
  }

  .search input {
    width: 180px;
  }

  .hero {
    padding: 120px 0 64px;
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article__aside {
    position: static;
    order: -1;
  }
}

@media (max-width: 860px) {
  .hero__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .section {
    padding: 56px 0;
  }

  .infographic {
    padding: 32px;
  }

  .article {
    padding: 32px;
  }

  table {
    min-width: 520px;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 17px;
  }

  .header {
    height: 70px;
  }

  .header__inner {
    width: min(100% - 24px, var(--container-max));
  }

  main {
    padding-top: 70px;
  }

  .search {
    display: none;
  }

  .hero__title {
    font-size: clamp(34px, 8vw, 46px);
  }

  .cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }

  .article article h2 {
    font-size: 26px;
  }

  .article article h3 {
    font-size: 20px;
  }

  .toc,
  .read-next {
    padding: 20px;
  }
}

@media (max-width: 560px) {
  :root {
    --header-height: 64px;
  }

  .header__inner {
    gap: 12px;
  }

  .logo span {
    display: none;
  }

  .hero {
    padding: 110px 0 56px;
  }

  .hero__cta {
    flex-direction: column;
    align-items: stretch;
  }

  .section__title {
    font-size: clamp(28px, 8vw, 36px);
  }

  .infographic {
    padding: 24px;
  }

  .article {
    padding: 28px;
  }

  table {
    min-width: 420px;
  }

  .timeline::before {
    left: 6px;
  }

  .timeline__item::before {
    left: -20px;
  }
}

@media (max-width: 400px) {
  body {
    font-size: 16px;
  }

  .article {
    padding: 24px;
  }

  .card {
    padding: 24px;
  }

  .quiz,
  .calculator {
    padding: 24px;
  }
}