/* ============ Responsive ============ */
@media (max-width: 1060px) {
  .hero-grid,
  .home-grid,
  .article-layout { grid-template-columns: 1fr; }

  .sidebar,
  .article-aside { position: static; }

  .article-aside { order: -1; }

  .search-box { display: none; }

  .featured-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .hero-side-visual { max-width: 560px; }
}

@media (max-width: 820px) {
  .header-inner {
    height: auto;
    padding: 18px 0;
    gap: 10px;
  }

  .brand { margin-right: auto; }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    margin-top: 8px;
    background: rgba(17, 24, 39, 0.98);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
    gap: 6px;
    z-index: 40;
  }

  html[data-theme="light"] .site-nav {
    background: rgba(255, 255, 255, 0.98);
    border-color: var(--border);
  }

  .site-nav.is-open { display: flex; }

  .site-nav > a,
  .site-nav .nav-link {
    display: block;
    width: 100%;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text);
  }

  .site-nav > a:hover,
  .site-nav > a.is-active,
  .site-nav .nav-link:hover,
  .site-nav .nav-link.is-active {
    color: var(--heading);
    background: rgba(59, 130, 246, 0.08);
  }

  .nav-item { display: block; }
  .nav-item.has-children { display: grid; gap: 6px; }

  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    padding: 4px 0 4px 12px;
    background: transparent;
    border: 0;
    box-shadow: none;
    min-width: 0;
  }

  .nav-dropdown a { color: var(--muted); padding: 6px 10px; border-radius: 6px; }
  html[data-theme="light"] .nav-dropdown a:hover { color: var(--heading); background: rgba(59, 130, 246, 0.08); }

  .nav-item.has-children::after { display: none; }

  .nav-item.has-children:hover .nav-dropdown,
  .nav-item.has-children:focus-within .nav-dropdown {
    transform: none;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .hero-slide { padding: 60px 0 30px; }

  .post-card {
    grid-template-columns: 1fr;
  }

  .post-card-media {
    aspect-ratio: 16 / 9;
    min-height: 0;
  }

  .filter-bar {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .featured-grid { grid-template-columns: 1fr; }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .article-meta > span::after { display: none; }
}

@media (max-width: 600px) {
  .flux-container { width: min(100% - 24px, var(--max)); }

  .form-grid-three { grid-template-columns: 1fr; }

  .side-card,
  .article-toc-panel,
  .article-info,
  .comment-form-panel,
  .empty-panel { padding: 18px; }

  .hero-copy h1 { font-size: clamp(32px, 8vw, 44px); }

  .section-heading {
    flex-direction: column;
    align-items: flex-start;
  }
}