:root {
      --primary: #005a9c;
      --dark: #333;
      --light: #f4f4f4;
      --white: #fff;
    }
    body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background: var(--light); color: var(--dark); line-height: 1.6; }
    a { color: var(--primary); text-decoration: none; }
    img { max-width: 100%; height: auto; display: block; }
    .main-header { background: var(--white); box-shadow: 0 2px 5px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
    .logo-link { display: flex; align-items: center; padding: 10px 15px; gap: 10px; color: inherit; }
    .logo-img { height: 45px; width: auto; }
    .site-name { font-weight: bold; color: var(--primary); font-size: 1.1rem; }
    .site-tagline { font-size: 0.8rem; color: #666; }
    .main-nav { display: flex; overflow-x: auto; background: var(--primary); -webkit-overflow-scrolling: touch; scrollbar-width: none; }
    .main-nav::-webkit-scrollbar { display: none; }
    .main-nav-link { color: var(--white); padding: 12px 15px; white-space: nowrap; font-weight: 500; font-size: 0.95rem; }
    .main-nav-link.active { background: rgba(0,0,0,0.2); }
    .menu-btn { position: fixed; bottom: 20px; right: 20px; background: var(--primary); color: white; border: none; padding: 12px 20px; border-radius: 30px; box-shadow: 0 4px 12px rgba(0,0,0,0.3); z-index: 1000; font-weight: bold; cursor: pointer; display: flex; align-items: center; gap: 5px; font-size: 1rem; }
    .sidebar-left { position: fixed; top: 0; left: 0; height: 100%; width: 280px; background: white; z-index: 1001; transform: translateX(-100%); transition: transform 0.3s ease; box-shadow: 2px 0 10px rgba(0,0,0,0.1); padding-top: 20px; display: flex; flex-direction: column; }
    .sidebar-left.open { transform: translateX(0); }
    .sidebar-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 1000; display: none; }
    .sidebar-overlay.open { display: block; }
    .sidebar-link { display: block; padding: 15px 20px; border-bottom: 1px solid #eee; font-weight: 500; color: #333; }
    .sidebar-search-container { padding: 15px; display: flex; gap: 5px; }
    .sidebar-search-input { flex: 1; padding: 8px; border: 1px solid #ddd; border-radius: 4px; }
    .sidebar-search-btn { padding: 8px 12px; background: var(--primary); color: white; border: none; border-radius: 4px; }
    .page { max-width: 1320px; margin: 24px auto 60px; padding: 0 16px; }
    .layout { display: grid; grid-template-columns: 1fr; gap: 20px; }
    .card { background: var(--white); border-radius: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.08); overflow: hidden; }
    .card-body { padding: 20px; }
    .title { margin: 0 0 8px; font-size: 1.8rem; font-weight: 800; }
    .meta { color: #777; font-size: 0.9rem; margin-bottom: 16px; }
    .content { font-size: 1rem; color: #444; }
    .actions { display: flex; align-items: center; gap: 12px; margin-top: 18px; }
    .like-btn { background: var(--primary); color: #fff; border: none; padding: 10px 16px; border-radius: 24px; cursor: pointer; font-weight: 600; }
    .share-btn { background: #0d8f6b; color: #fff; border: none; padding: 10px 16px; border-radius: 24px; cursor: pointer; font-weight: 600; }
    .like-count { font-size: 0.9rem; color: #555; }
    .back { display: inline-block; margin: 18px 0; }
    .side-card { background: var(--white); border-radius: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.08); padding: 16px; }
    .side-title { margin: 0 0 12px; font-size: 1.05rem; font-weight: 700; color: var(--primary); }
    .side-list { list-style: none; margin: 0; padding: 0; }
    .side-list li { padding: 8px 0; border-bottom: 1px solid #eee; }
    .side-list li:last-child { border-bottom: none; }
    .social-links { margin-top: 12px; display: grid; gap: 8px; }
    .social-link { display: flex; align-items: center; gap: 8px; padding: 8px 10px; border: 1px solid #eee; border-radius: 8px; background: #fafafa; color: #333; font-weight: 600; font-size: 0.9rem; }
    .social-link:hover { color: var(--primary); border-color: #d8e6f4; background: #f6fbff; }
    .social-icon { width: 16px; height: 16px; display: inline-block; }
    .ad-grid { display: grid; gap: 12px; }
    .ad-item { border: 1px solid #e6e6e6; border-radius: 8px; background: #fff; padding: 10px; display: block; }
    .ad-item img { width: 100%; height: 140px; object-fit: cover; border-radius: 6px; }
    @media (min-width: 1024px) {
      .layout { grid-template-columns: 260px 1fr 260px; align-items: start; }
    }