.labs-section {
    padding: 80px 20px;
    background: linear-gradient(135deg, #2c5364, #203a43, #2c5364);
    color: #e0e0e0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
  }

  .labs-container {
    max-width: 1100px;
    margin: 0 auto;
  }

  .labs-title {
    text-align: center;
    font-size: 3.2rem;
    margin-bottom: 20px;
    color: #ffffff;
    text-shadow: 0 4px 12px rgba(0,0,0,0.7);
    animation: fadeInUp 1.2s ease-out;
  }

  .labs-subtitle {
    text-align: center;
    font-size: 1.3rem;
    margin-bottom: 60px;
    opacity: 0.88;
    animation: fadeInUp 1.5s ease-out;
  }

  .labs-list {
    display: flex;
    flex-direction: column;
    gap: 70px;
  }

  .lab-card {
    background: rgba(15, 32, 39, 0.18);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 
      0 8px 32px rgba(0,0,0,0.5),
      inset 0 0 20px rgba(255,255,255,0.03);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(44, 83, 100, 0.5);
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    animation: cardFadeIn 1.8s ease-out forwards;
    opacity: 0;
  }

  .lab-card:nth-child(1) { animation-delay: 0.2s; }
  .lab-card:nth-child(2) { animation-delay: 0.4s; }
  .lab-card:nth-child(3) { animation-delay: 0.6s; }
  .lab-card:nth-child(4) { animation-delay: 0.8s; }
  .lab-card:nth-child(5) { animation-delay: 1.0s; }

  .lab-card:hover {
    transform: translateY(-18px) scale(1.02);
    box-shadow: 
      0 30px 70px rgba(0,0,0,0.6),
      inset 0 0 30px rgba(255,255,255,0.05);
    border-color: rgba(77, 168, 218, 0.6);
  }

  .slideshow {
    position: relative;
    height: 350px;
    overflow: hidden;
    background: #0f2027;
  }

  .slide-radio {
    display: none;
  }

  .slides {
    position: relative;
    width: 100%;
    height: 100%;
  }

  .slide {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: fill;
    object-position: center;
    opacity: 0;
    transition: opacity 1.2s ease;
    background: #0f2027;
    pointer-events: none;
  }

  /* Show active slide */
  #math-1:checked ~ .slides img[data-for="math-1"],
  #math-2:checked ~ .slides img[data-for="math-2"],
  #math-3:checked ~ .slides img[data-for="math-3"],
  #math-4:checked ~ .slides img[data-for="math-4"],

  #physics-1:checked ~ .slides img[data-for="physics-1"],
  #physics-2:checked ~ .slides img[data-for="physics-2"],
  #physics-3:checked ~ .slides img[data-for="physics-3"],
  #physics-4:checked ~ .slides img[data-for="physics-4"],

  #chem-1:checked ~ .slides img[data-for="chem-1"],
  #chem-2:checked ~ .slides img[data-for="chem-2"],
  #chem-3:checked ~ .slides img[data-for="chem-3"],
  #chem-4:checked ~ .slides img[data-for="chem-4"],

  #comp-1:checked ~ .slides img[data-for="comp-1"],
  #comp-2:checked ~ .slides img[data-for="comp-2"],
  #comp-3:checked ~ .slides img[data-for="comp-3"],
  #comp-4:checked ~ .slides img[data-for="comp-4"],

  #bio-1:checked ~ .slides img[data-for="bio-1"],
  #bio-2:checked ~ .slides img[data-for="bio-2"],
  #bio-3:checked ~ .slides img[data-for="bio-3"],
  #bio-4:checked ~ .slides img[data-for="bio-4"] {
    opacity: 1;
    pointer-events: auto;
  }

  /* Prev / Next buttons */
  .prev, .next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(0,0,0,0.45);
    color: white;
    font-size: 2.2rem;
    line-height: 50px;
    text-align: center;
    cursor: pointer;
    user-select: none;
    border-radius: 50%;
    transition: all 0.3s ease;
    z-index: 12;
    backdrop-filter: blur(4px);
  }

  .prev:hover, .next:hover {
    background: rgba(77,168,218,0.65);
    transform: translateY(-50%) scale(1.12);
  }

  .prev { left: 15px; }
  .next { right: 15px; }

  /* Dots */
  .dots {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
  }

  .dot {
    width: 12px;
    height: 12px;
    background: rgba(255,255,255,0.4);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
  }

  .dot:hover {
    background: rgba(255,255,255,0.7);
  }

  /* Active dot style */
  #math-1:checked ~ .dots label[for="math-1"],
  #math-2:checked ~ .dots label[for="math-2"],
  #math-3:checked ~ .dots label[for="math-3"],
  #math-4:checked ~ .dots label[for="math-4"],

  #physics-1:checked ~ .dots label[for="physics-1"],
  #physics-2:checked ~ .dots label[for="physics-2"],
  #physics-3:checked ~ .dots label[for="physics-3"],
  #physics-4:checked ~ .dots label[for="physics-4"],

  #chem-1:checked ~ .dots label[for="chem-1"],
  #chem-2:checked ~ .dots label[for="chem-2"],
  #chem-3:checked ~ .dots label[for="chem-3"],
  #chem-4:checked ~ .dots label[for="chem-4"],

  #comp-1:checked ~ .dots label[for="comp-1"],
  #comp-2:checked ~ .dots label[for="comp-2"],
  #comp-3:checked ~ .dots label[for="comp-3"],
  #comp-4:checked ~ .dots label[for="comp-4"],

  #bio-1:checked ~ .dots label[for="bio-1"],
  #bio-2:checked ~ .dots label[for="bio-2"],
  #bio-3:checked ~ .dots label[for="bio-3"],
  #bio-4:checked ~ .dots label[for="bio-4"] {
    background: #4da8da;
    border-color: white;
    transform: scale(1.3);
  }

  .lab-content {
    padding: 35px;
  }

  .lab-title {
    font-size: 2.2rem;
    margin-bottom: 18px;
    color: #a8d0e6;
    text-shadow: 0 2px 8px rgba(0,0,0,0.5);
  }

  .lab-content p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 22px;
    opacity: 0.92;
  }

  .lab-content ul {
    list-style: none;
    padding: 0;
  }

  .lab-content li {
    padding: 12px 0;
    position: relative;
    padding-left: 32px;
    font-size: 1.05rem;
  }

  .lab-content li::before {
    content: "➤";
    position: absolute;
    left: 0;
    color: #4da8da;
    font-weight: bold;
  }

  @keyframes fadeInUp {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
  }

  @keyframes cardFadeIn {
    from { opacity: 0; transform: translateY(80px); }
    to { opacity: 1; transform: translateY(0); }
  }

  @media (max-width: 768px) {
    .labs-title    { font-size: 2.6rem; }
    .lab-title     { font-size: 1.9rem; }
    .slideshow     { height: 280px; }
    .lab-content   { padding: 25px; }
    .labs-list     { gap: 50px; }
    .dot           { width: 10px; height: 10px; }
    .prev, .next   {
      width: 44px;
      height: 44px;
      font-size: 1.9rem;
      line-height: 44px;
    }
  }