/* ===== PROVIDED CSS VARIABLES (exactly as given) ===== */
    :root {
      --primary: #00c8ff;
      --secondary: #7b2dff;
      --accent: #ff2d7b;
      --dark: #0a0e17;
      --darker: #030609;
      --light: #f8fbff;
      --gray: #7a8da9;
      --text-light: #ffffff;
      --text-muted: #a0a0a0;
      --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      --font-heading: 'Montserrat', 'Arial Narrow', sans-serif;
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
      --border-radius: 10px;
      --border-radius-sm: 6px;
      --membrane-medium: rgba(123, 45, 255, 0.3);
      --hover-blueish-black: rgba(3, 6, 9, 0.95);
      --white: #ffffff;
      --glow: 0 0 15px rgba(0, 200, 255, 0.5);
      --clinic-teal: #00e6c3;
      --clinic-teal-dark: #00b39d;
      --clinic-teal-light: #00f7d6;
    }

    /* Reset & base styles */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-main);
      background: var(--darker);
      color: var(--text-light);
      line-height: 1.65;
      scroll-behavior: smooth;
    }

    /* Particle background effect (scientific atmosphere) */
    .particle-bg {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: -2;
      background: radial-gradient(circle at 10% 20%, rgba(0,200,255,0.05), var(--darker) 90%);
    }
    canvas#particleCanvas {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: -1;
      pointer-events: none;
      opacity: 0.4;
    }

    /* Main container */
    .article-container {
      max-width: 1300px;
      margin: 2rem auto 4rem;
      padding: 0 2rem;
      display: grid;
      grid-template-columns: 1fr 320px;
      gap: 3rem;
      position: relative;
      z-index: 2;
    }

    /* ===== ARTICLE STYLES ===== */
    .research-article {
      background: rgba(5, 8, 15, 0.75);
      backdrop-filter: blur(2px);
      border-radius: var(--border-radius);
      border: 1px solid rgba(0, 200, 255, 0.2);
      overflow: hidden;
      transition: var(--transition);
    }

    .article-header {
      padding: 2rem 2rem 1rem;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }

    .article-category {
      display: inline-block;
      background: rgba(0, 200, 255, 0.12);
      color: var(--primary);
      padding: 0.3rem 1rem;
      border-radius: 40px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      margin-bottom: 1rem;
    }

    .article-header h1 {
      font-family: var(--font-heading);
      font-size: 2.6rem;
      line-height: 1.2;
      margin-bottom: 1rem;
      background: linear-gradient(135deg, #fff, var(--primary));
      background-clip: text;
      -webkit-background-clip: text;
      color: transparent;
    }

    .article-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 1.5rem;
      color: var(--gray);
      font-size: 0.85rem;
      margin-top: 0.5rem;
    }

    .featured-image {
      width: 100%;
      max-height: 420px;
      overflow: hidden;
    }

    .featured-image img {
      width: 100%;
      height: auto;
      object-fit: cover;
      transition: transform 0.4s;
    }

    .featured-image:hover img {
      transform: scale(1.01);
    }

    .article-body {
      padding: 2rem;
    }

    .article-body h2 {
      font-family: var(--font-heading);
      font-size: 1.8rem;
      margin: 1.8rem 0 1rem;
      color: var(--primary);
      border-left: 4px solid var(--primary);
      padding-left: 1rem;
    }

    .article-body h3 {
      font-size: 1.4rem;
      margin: 1.5rem 0 0.8rem;
      color: var(--text-light);
    }

    .article-body p {
      margin-bottom: 1.2rem;
      color: var(--text-muted);
      font-size: 1.03rem;
      line-height: 1.7;
    }

    .disclaimer-box {
      background: rgba(255, 45, 123, 0.1);
      border-left: 4px solid var(--accent);
      padding: 1rem 1.5rem;
      margin: 1rem 0 1.5rem;
      font-size: 0.9rem;
      border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    }

    .pullquote {
      background: linear-gradient(135deg, rgba(0,200,255,0.08), rgba(123,45,255,0.05));
      border-left: 4px solid var(--primary);
      padding: 1.2rem 1.8rem;
      margin: 1.8rem 0;
      font-style: italic;
      font-weight: 500;
      border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    }

    .data-table {
      background: rgba(0,0,0,0.4);
      border-radius: var(--border-radius-sm);
      overflow-x: auto;
      margin: 1.5rem 0;
      border: 1px solid rgba(255,255,255,0.1);
    }

    .data-table table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.9rem;
    }

    .data-table th, .data-table td {
      padding: 0.8rem 1rem;
      text-align: left;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }

    .data-table th {
      background: rgba(0,200,255,0.1);
      color: var(--primary);
      font-weight: 600;
    }

    .citation-block {
      margin-top: 2.5rem;
      padding: 1.2rem 1.5rem;
      background: rgba(0,0,0,0.3);
      border-radius: var(--border-radius-sm);
      font-size: 0.85rem;
      border-left: 3px solid var(--secondary);
    }

    .btn-cite {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: transparent;
      border: 1px solid var(--primary);
      color: var(--primary);
      padding: 0.5rem 1.2rem;
      border-radius: 40px;
      font-size: 0.8rem;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      margin-top: 1rem;
    }

    .btn-cite:hover {
      background: var(--primary);
      color: var(--dark);
      box-shadow: var(--glow);
    }

    /* ===== SIDEBAR ===== */
    .sidebar {
      position: sticky;
      top: 2rem;
      align-self: start;
    }

    .author-card, .key-points, .references-preview {
      background: rgba(5, 8, 15, 0.8);
      backdrop-filter: blur(2px);
      border-radius: var(--border-radius);
      padding: 1.5rem;
      margin-bottom: 2rem;
      border: 1px solid rgba(0, 200, 255, 0.15);
    }

    .author-avatar {
      width: 70px;
      height: 70px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 2rem;
      margin-bottom: 1rem;
    }

    .author-card h3, .key-points h3, .references-preview h3 {
      font-size: 1.2rem;
      margin-bottom: 1rem;
      padding-bottom: 0.5rem;
      border-bottom: 2px solid rgba(0,200,255,0.3);
      display: inline-block;
    }

    .key-points ul {
      list-style: none;
      padding-left: 0;
    }

    .key-points li {
      margin-bottom: 0.8rem;
      display: flex;
      gap: 0.7rem;
      align-items: baseline;
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .key-points i {
      color: var(--primary);
      font-size: 0.8rem;
      margin-top: 0.2rem;
    }

    .ref-item {
      font-size: 0.8rem;
      margin-bottom: 1rem;
      color: var(--gray);
    }

    .article-footer {
      text-align: center;
      margin-top: 2rem;
      padding: 2rem;
      border-top: 1px solid rgba(255,255,255,0.05);
    }

    .cta-button {
      background: linear-gradient(95deg, var(--primary), var(--secondary));
      color: var(--dark);
      border: none;
      padding: 0.8rem 2rem;
      border-radius: 40px;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
    }

    .cta-button:hover {
      transform: translateY(-3px);
      box-shadow: var(--glow);
    }

    @media (max-width: 900px) {
      .article-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 1.2rem;
      }
      .sidebar {
        position: relative;
        top: 0;
      }
      .article-header h1 {
        font-size: 2rem;
      }
    }

    @media (max-width: 500px) {
      .article-body {
        padding: 1.2rem;
      }
      .article-header h1 {
        font-size: 1.7rem;
      }
    }