* > :first-child:not([data-tabs-panel="true"]) {
        margin-top: 0 !important;
      }
      * > :last-child:not([data-tabs-panel="true"]) {
        margin-bottom: 0 !important;
      }

      /* Shiki dual-theme support for highlighted code blocks */
      .dark .shiki,
      .dark .shiki span {
        color: var(--shiki-dark) !important;
      }
      .shiki {
        background-color: transparent !important;
      }
      pre code {
        background-color: transparent !important;
        padding: 0 !important;
      }

      .mainContent a:hover {
        color: var(--accent);
      }

      /* Heading fragment links: same look as plain headings (beat .mainContent a:hover) */
      .mainContent a.heading-anchor-text,
      .mainContent a.heading-anchor-text:hover {
        color: inherit;
        text-decoration: none;
      }

      .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
      }

      .container.wrapper {
        display: flex;
        flex-direction: row;
      }

      .sidebar {
        width: 250px;
        height: 100%;
        position: sticky;
        top: 0;
        left: 0;
        padding: 2rem;
        background: #f8f9fa;
        border-right: 1px solid #e5e7eb;
      }

      .content {
        margin-left: 250px;
        padding: 2rem;
      }
      
      .header {
        background: #fff;
        border-bottom: 1px solid #e5e5e5;
        padding: 1rem 0;
      }
      
      .logo {
        font-size: 1.5rem;
        font-weight: bold;
        color: #2563eb;
        margin-bottom: 1rem;
      }
      
      .nav {
        display: flex;
        gap: 2rem;
        flex-wrap: wrap;
      }
      
      .nav-link:hover {
      }
      
      .nav-link-active {
        position: relative;
      }
      
      .nav-section {
        margin-bottom: 1.5rem;
      }
      
      .nav-section-title {
        font-size: 1.125rem;
        font-weight: 700;
        color: #1f2937;
        display: block;
        margin-bottom: 0.75rem;
        text-decoration: none;
      }
      
      .nav-section-title:hover {
        color: #2563eb;
      }
      
      .nav-section-items {
        display: flex;
        flex-direction: column;
      }
      
      .nav-section-items .nav-link {
        padding: 0.375rem 0;
      }
      
      .nav-section-items .nav-group {
        margin-bottom: 0.75rem;
      }
      
      .main {
        padding: 2rem 0;
        min-height: calc(100vh - 200px);
      }
      
      .hero {
        text-align: center;
        padding: 4rem 0;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        margin-bottom: 3rem;
        border-radius: 8px;
      }
      
      .hero h1 {
        font-size: 3rem;
        margin-bottom: 1rem;
      }
      
      .hero-description {
        font-size: 1.2rem;
        opacity: 0.9;
      }
      
      .navigation {
        background: #f8f9fa;
        padding: 2rem;
        border-radius: 8px;
        margin-bottom: 2rem;
      }
      
      .nav-list {
        list-style: none;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1rem;
        margin-top: 1rem;
      }
      
      .nav-list li {
        background: white;
        padding: 1rem;
        border-radius: 4px;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
      }
      
      .nav-list a {
        color: #2563eb;
        text-decoration: none;
        font-weight: 500;
      }
      
      .nav-list a:hover {
        text-decoration: underline;
      }
      
      .nav-group-item {
        background: white;
        padding: 1rem;
        border-radius: 4px;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
      }
      
      .nav-group-item strong {
        color: #1f2937;
        display: block;
        margin-bottom: 0.75rem;
        font-size: 1rem;
      }
      
      .nav-sublist {
        list-style: none;
        padding-left: 1rem;
        margin-top: 0.5rem;
        border-left: 2px solid #e5e7eb;
      }
      
      .nav-sublist li {
        background: transparent;
        padding: 0.25rem 0;
        box-shadow: none;
      }
      
      .nav-sublist a {
        font-size: 0.95rem;
      }
      
      .mainContent h2,
      .mainContent h3,
      .mainContent h4,
      .mainContent h5,
      .mainContent h6 {
        scroll-margin-top: calc(3.2rem + 1rem);
      }

      .footer {
        background: #f8f9fa;
        padding: 2rem 0;
        text-align: center;
        color: #6b7280;
        border-top: 1px solid #e5e5e5;
        margin-top: 3rem;
      }
      
      @media (max-width: 768px) {
        .nav {
          flex-direction: column;
          gap: 1rem;
        }
        
        .hero h1 {
          font-size: 2rem;
        }
        
        .nav-list {
          grid-template-columns: 1fr;
        }
      }