:root { 
      --indigo-700: #4338ca; 
      --indigo-600: #4f46e5; 
      --indigo-500: #6366f1; 
      --indigo-300: #a5b4fc; 
      --cyan-400: #22d3ee; 
      --grey-900: #0f172a; 
      --grey-800: #1e293b; 
      --grey-700: #334155; 
      --grey-600: #475569; 
      --grey-500: #64748b; 
      --grey-300: #cbd5e1; 
      --grey-200: #e2e8f0; 
      --grey-100: #f1f5f9; 
      --radius: 14px; 
      --shadow-sm: 0 2px 6px rgba(15, 23, 42, 0.08); 
      --transition: 180ms ease; 
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; } 
    body { 
      font-family: "Nunito", system-ui, -apple-system, sans-serif; 
      background: linear-gradient(135deg, var(--grey-900), var(--grey-800)); 
      color: var(--grey-100); 
      min-height: 100vh; 
      display: flex; 
      flex-direction: column; 
      line-height: 1.7; 
    }
    a { color: var(--cyan-400); text-decoration: none; } 
    a:hover { text-decoration: underline; }
    header { 
      background: var(--grey-900); 
      padding: 1rem 1.5rem; 
      box-shadow: var(--shadow-sm); 
    }
    .container { 
      max-width: 1180px; 
      margin: 0 auto; 
      width: 100%; 
      padding: 0 1rem; 
    }
    .header-content { 
      display: flex; 
      justify-content: space-between; 
      align-items: center; 
      flex-wrap: wrap; 
    }
    .brand { 
      display: flex; 
      align-items: center; 
      gap: 0.75rem; 
    } 
    .brand svg { 
      width: 32px; 
      height: 32px; 
      fill: var(--indigo-500); 
    } 
    /* Modified: Targeted .brand-title instead of .brand h1 */
    .brand-title { 
      font-size: 1.35rem; 
      font-weight: 600; 
      color: var(--grey-100); 
    }
    .main-nav ul { 
      list-style: none; 
      padding: 0; 
      margin: 0; 
      display: flex; 
      gap: 1.5rem; 
    } 
    .main-nav a { 
      color: var(--grey-300); 
      text-decoration: none; 
      font-weight: 500; 
      font-size: 0.95rem; 
      transition: color var(--transition); 
      padding: 0.5rem 0; 
    } 
    .main-nav a:hover, 
    .main-nav a.active { 
      color: var(--cyan-400); 
    }
    @media (max-width: 600px) { 
      .header-content { 
        flex-direction: column; 
        align-items: flex-start; 
      } 
      .main-nav { 
        margin-top: 0.75rem; 
        width: 100%; 
      } 
      .main-nav ul { 
        gap: 1rem; 
      } 
      /* Modified: Targeted .brand-title instead of .brand h1 */
      .brand-title { 
        font-size: 1.25rem; 
      } 
    }
    
    main.page-container { 
      flex: 1; 
      padding: 2.5rem 1rem; 
      max-width: 1180px; 
      margin: 0 auto; 
      display: flex; 
      flex-wrap: wrap; 
      gap: 2rem; 
    }
    .article-main-content { 
      flex: 3; 
      min-width: 0; 
    }
    .article-sidebar { 
      flex: 1; 
      min-width: 280px; 
      background-color: var(--grey-800); 
      border: 1px solid var(--grey-700); 
      border-radius: var(--radius); 
      padding: 0; 
      align-self: flex-start; 
      position: sticky; 
      top: 1.5rem; 
    }
    .sidebar-content-wrapper { 
      padding: 1.5rem; 
      max-height: calc(100vh - 3rem); 
      overflow-y: auto; 
    }
    @media (max-width: 980px) { 
      main.page-container { 
        flex-direction: column; 
      } 
      .article-sidebar { 
        position: static; 
        margin-top: 2rem; 
        width: 100%; 
      } 
      .sidebar-content-wrapper { 
        max-height: unset; 
        overflow-y: visible; 
        padding: 1.5rem; 
      } 
      .article-main-content { 
        width: 100%; 
      } 
    }
    ::-webkit-scrollbar { 
      width: 8px; 
      height: 8px; 
    }
    ::-webkit-scrollbar-track { 
      background: var(--grey-700); 
      border-radius: 10px; 
    }
    ::-webkit-scrollbar-thumb { 
      background: var(--indigo-500); 
      border-radius: 10px; 
    }
    ::-webkit-scrollbar-thumb:hover { 
      background: var(--indigo-600); 
    }
    .sidebar-content-wrapper { 
      scrollbar-width: thin; 
      scrollbar-color: var(--indigo-500) var(--grey-700); 
    }
    .hero-section { 
      margin-bottom: 2rem; 
      border-bottom: 1px solid var(--grey-700); 
      padding-bottom: 1.5rem; 
    }
    .hero-section .article-title { 
      font-size: 2.2rem; 
      color: var(--grey-100); 
      margin-bottom: 0.5rem; 
      line-height: 1.3; 
    }
    .article-meta { 
      font-size: 0.85rem; 
      color: var(--grey-500); 
      margin-bottom: 0.25rem; 
    } 
    .article-meta .category-tag { 
      display: inline-block; 
      background-color: var(--indigo-500); 
      color: var(--grey-100); 
      padding: 0.2rem 0.5rem; 
      border-radius: 5px; 
      font-size: 0.7rem; 
      font-weight: 600; 
      text-transform: uppercase; 
      letter-spacing: 0.5px; 
      margin-right: 0.75rem; 
    }
    .article-subtitle { 
      color: var(--grey-300); 
      font-size: 1.1rem; 
      margin-bottom: 1.5rem; 
    }
    .at-a-glance-box { 
      background-color: rgba(79, 70, 229, 0.1); 
      border: 1px solid var(--indigo-600); 
      border-radius: var(--radius); 
      padding: 1.2rem; 
      margin-top: 1.5rem; 
      margin-bottom: 2rem; 
    }
    .at-a-glance-box h2 { 
      font-size: 1.4rem; 
      color: var(--indigo-300); 
      margin-bottom: 1rem; 
      border-bottom: 1px solid var(--indigo-700); 
      padding-bottom: 0.5rem; 
    }
    .at-a-glance-box ul { 
      list-style: none; 
      padding: 0; 
      margin: 0; 
      display: grid; 
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); 
      gap: 1rem; 
    }
    .at-a-glance-box li { 
      background-color: rgba(79, 70, 229, 0.05); 
      padding: 0.75rem; 
      border-radius: 8px; 
      border: 1px solid rgba(79, 70, 229, 0.2); 
    }
    .at-a-glance-box li strong { 
      display: block; 
      font-size: 1.1rem; 
      color: var(--cyan-400); 
      margin-bottom: 0.25rem; 
    }
    .at-a-glance-box li span { 
      font-size: 0.9rem; 
      color: var(--grey-300); 
    }
    .article-body h2 { 
      font-size: 1.6rem; 
      color: var(--indigo-300); 
      margin-top: 2.5rem; 
      margin-bottom: 1rem; 
      padding-bottom: 0.5rem; 
      border-bottom: 1px solid var(--grey-700); 
    }
    .article-body h3 { 
      font-size: 1.3rem; 
      color: var(--grey-200); 
      margin-top: 2rem; 
      margin-bottom: 0.75rem; 
    }
    .article-body p, 
    .article-body ul, 
    .article-body ol { 
      margin-bottom: 1.25rem; 
      font-size: 1rem; 
      color: var(--grey-200); 
    } 
    .article-body ul, 
    .article-body ol { 
      margin-left: 1.5rem; 
      padding-left: 0.5rem; 
    } 
    .article-body li { 
      margin-bottom: 0.5rem; 
    }
    .article-body strong { 
      color: var(--grey-100); 
      font-weight: 600; 
    } 
    .article-body blockquote { 
      border-left: 3px solid var(--indigo-500); 
      margin: 1.5rem 0; 
      padding: 0.5rem 1.5rem; 
      background-color: rgba(79, 70, 229, 0.05); 
      color: var(--grey-300); 
      font-style: italic; 
    }
    .chart-container { 
      position: relative; 
      margin: 1.5rem auto; 
      padding: 1rem; 
      background-color: var(--grey-800); 
      border: 1px solid var(--grey-700); 
      border-radius: var(--radius); 
      box-shadow: var(--shadow-sm); 
      max-width: 100%; 
      height: 400px; 
      display: flex; 
      align-items: center; 
      justify-content: center; 
    }
    @media (max-width: 600px) { 
      .chart-container { 
        height: 300px; 
      } 
    }
    .chart-container canvas { 
      width: 100% !important; 
      height: 100% !important; 
    }
    .article-body .figure-caption { 
      font-size: 0.85rem; 
      color: var(--grey-500); 
      text-align: center; 
      margin-top: 0.5rem; 
      margin-bottom: 1.5rem; 
    }
    .table-container { 
      overflow-x: auto; 
      background-color: var(--grey-800); 
      padding: 1rem; 
      border: 1px solid var(--grey-700); 
      border-radius: var(--radius); 
      margin: 1.5rem 0; 
      box-shadow: var(--shadow-sm); 
    }
    .article-body table { 
      width: 100%; 
      border-collapse: collapse; 
      color: var(--grey-200); 
    } 
    .article-body table caption { 
      font-size: 1.1rem; 
      font-weight: 600; 
      color: var(--grey-100); 
      padding: 0.75rem; 
      text-align: left; 
      caption-side: top; 
      margin-bottom: 0.5rem; 
    }
    .article-body th, 
    .article-body td { 
      text-align: left; 
      padding: 0.75rem 1rem; 
      border-bottom: 1px solid var(--grey-700); 
    } 
    .article-body th { 
      background-color: var(--grey-700); 
      color: var(--grey-100); 
      font-weight: 600; 
    }
    .article-body tr:last-child td { 
      border-bottom: none; 
    } 
    .article-body tr:hover { 
      background-color: rgba(79, 70, 229, 0.08); 
    } 
    .article-body td.numeric-value { 
      text-align: right; 
    }
    .cta-link-forecaster { 
      display: inline-block; 
      background-color: var(--indigo-600); 
      color: var(--grey-100); 
      padding: 0.8rem 1.5rem; 
      border-radius: var(--radius); 
      text-decoration: none; 
      font-weight: 600; 
      margin: 1rem 0; 
      transition: background-color var(--transition); 
    } 
    .cta-link-forecaster:hover { 
      background-color: var(--indigo-700); 
      text-decoration: none; 
    }
    .stat-value { 
      font-weight: 700; 
      color: var(--cyan-400); 
    }
    .loading-text, 
    .error-text, 
    .info-message { 
      text-align: center; 
      color: var(--grey-300); 
      font-style: italic; 
      margin: 1rem 0; 
      padding: 1rem; 
      border-radius: var(--radius); 
    }
    .error-text { 
      background-color: rgba(239, 68, 68, 0.1); 
      border: 1px solid rgba(239, 68, 68, 0.5); 
      color: #f87171; 
    }
    .info-message { 
      background-color: rgba(59, 130, 246, 0.1); 
      border: 1px solid rgba(59, 130, 246, 0.5); 
      color: var(--grey-200); 
    }
    footer { 
      text-align: center; 
      font-size: 0.85rem; 
      padding: 3rem 1rem 2rem 1rem; 
      color: var(--grey-500); 
    } 
    footer .container { 
      max-width: 1180px; 
    }
    .sidebar-section { 
      margin-bottom: 2rem; 
      padding-bottom: 1.5rem; 
      border-bottom: 1px solid var(--grey-700); 
    }
    .sidebar-section:last-child { 
      border-bottom: none; 
      margin-bottom: 0; 
      padding-bottom: 0; 
    }
    .sidebar-section h3 { 
      font-size: 1.25rem; 
      color: var(--indigo-300); 
      margin-bottom: 1rem; 
    }
    .sidebar-section ul { 
      list-style: none; 
      padding: 0; 
      margin: 0; 
    }
    .sidebar-section li { 
      margin-bottom: 0.75rem; 
    }
    .sidebar-section li a { 
      color: var(--grey-200); 
      transition: color var(--transition); 
      display: block; 
      padding: 0.2rem 0; 
    }
    .sidebar-section li a:hover { 
      color: var(--cyan-400); 
      text-decoration: none; 
    }
    .sidebar-stats-list li { 
      display: flex; 
      justify-content: space-between; 
      align-items: center; 
      padding: 0.5rem 0; 
      border-bottom: 1px dotted var(--grey-700); 
    }
    .sidebar-stats-list li:last-child { 
      border-bottom: none; 
    }
    .sidebar-stats-list li span:first-child { 
      color: var(--grey-300); 
      font-weight: 500; 
    }
    .sidebar-stats-list li span:last-child { 
      color: var(--cyan-400); 
      font-weight: 700; 
    }
    /* Accessibility: Visually hidden content but available to screen readers */
    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border-width: 0;
    }
    .on-page-nav {
      background-color: var(--grey-800);
      border: 1px solid var(--grey-700);
      border-radius: var(--radius);
      padding: 1.2rem;
      margin-bottom: 2rem;
    }
    .on-page-nav h3 {
      font-size: 1.2rem;
      color: var(--indigo-300);
      margin-bottom: 1rem;
    }
    .on-page-nav ul {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 0.75rem 1.5rem;
    }
    .on-page-nav li {
      margin-bottom: 0;
    }
    .on-page-nav a {
      color: var(--grey-200);
      font-weight: 500;
      display: block;
      padding: 0.2rem 0;
      transition: color var(--transition);
    }
    .on-page-nav a:hover {
      color: var(--cyan-400);
      text-decoration: none;
    }
    .footer-other-airports {
        margin-top: 2rem;
        padding-top: 1.5rem;
        border-top: 1px solid var(--grey-700);
    }
    .footer-other-airports h4 {
        font-size: 1.1rem;
        color: var(--grey-200);
        margin-bottom: 1rem;
    }
    .footer-other-airports ul {
        list-style: none;
        padding: 0;
        margin: 0;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem 1.5rem;
    }
    .footer-other-airports li {
        margin-bottom: 0.5rem;
    }
    .footer-other-airports a {
        color: var(--grey-400);
        font-size: 0.8rem;
        transition: color var(--transition);
    }
    .footer-other-airports a:hover {
        color: var(--cyan-400);
        text-decoration: none;
    }