:root {
    --primary: #ff4655;
    --secondary: #0f1923;
    --accent: #46a3ff;
    --light: #f5f5f5;
    --dark: #1a1a1a;
    --gray: #333333;
    --light-gray: #555555;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --text: #e6e6e6;
    --border-radius: 4px;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--dark);
  }

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--light);
  }

  h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
  }

  h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
  }

  h2:after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 3px;
    background-color: var(--primary);
  }

  h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }

  p {
    margin-bottom: 1.5rem;
  }

  a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
  }

  a:hover {
    color: var(--primary);
  }

  img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
  }

  .btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--primary);
    color: var(--light);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
  }

  .btn:hover {
    background-color: #e63e4c;
    color: var(--light);
    transform: translateY(-2px);
  }

  .btn-primary {
    background-color: var(--primary);
  }

  .btn-secondary {
    background-color: var(--secondary);
    border: 1px solid var(--primary);
  }

  /* Page Intro Section */
  .page-intro {
    position: relative;
    padding: 100px 0;
    text-align: center;
    overflow: hidden;
  }

  .page-intro .bg-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    filter: brightness(0.3);
  }

  .page-intro h1 {
    color: var(--light);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    margin-bottom: 1.5rem;
  }

  .intro-text {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
    color: var(--light);
  }

  /* Methodology Section */
  .ranking-methodology {
    padding: 80px 0;
    background-color: var(--secondary);
  }

  .methodology-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: center;
  }

  .methodology-text {
    flex: 1;
    min-width: 300px;
  }

  .methodology-content img {
    flex: 1;
    min-width: 300px;
    max-width: 500px;
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .criteria-list {
    list-style: none;
    margin: 1.5rem 0;
  }

  .criteria-list li {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
  }

  .criteria-list i {
    color: var(--primary);
    margin-right: 10px;
    font-size: 1.1rem;
  }

  /* Top Cases Section */
  .top-cases {
    padding: 80px 0;
    background-color: var(--dark);
  }

  .section-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
  }

  .case-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
  }

  .case-card {
    display: flex;
    background-color: var(--secondary);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    position: relative;
  }

  .case-rank {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 36px;
    height: 36px;
    background-color: var(--primary);
    color: var(--light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    z-index: 1;
  }

  .case-card img {
    width: 200px;
    height: 200px;
    object-fit: cover;
  }

  .case-content {
    padding: 20px;
    flex: 1;
  }

  .case-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
  }

  .stat {
    min-width: 150px;
  }

  .stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--light-gray);
    margin-bottom: 5px;
  }

  .stat-value {
    font-weight: 600;
    color: var(--light);
  }

  .rating {
    color: var(--warning);
  }

  .case-description {
    margin-bottom: 15px;
  }

  .case-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .highlight {
    background-color: rgba(255, 70, 85, 0.1);
    color: var(--primary);
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
  }

  /* Rare Items Section */
  .rare-items {
    padding: 80px 0;
    background-color: var(--secondary);
  }

  .rare-items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
  }

  .rare-item {
    background-color: var(--dark);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
  }

  .rare-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
  }

  .item-details {
    padding: 20px;
  }

  .item-source {
    color: var(--light-gray);
    font-size: 0.9rem;
    margin-bottom: 10px;
  }

  .item-rarity, .item-price-range {
    margin-top: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .rarity-label, .price-label {
    color: var(--light-gray);
  }

  .rarity-value.covert {
    color: #eb4b4b;
    font-weight: 600;
  }

  .rarity-value.extraordinary {
    color: #caab05;
    font-weight: 600;
  }

  .price-value {
    font-weight: 600;
    color: var(--accent);
  }

  /* FAQ Section */
  .faq {
    padding: 80px 0;
    background-color: var(--dark);
  }

  .faq-list {
    max-width: 900px;
    margin: 0 auto;
  }

  .faq-item {
    margin-bottom: 15px;
    border-radius: var(--border-radius);
    overflow: hidden;
  }

  .faq-question {
    width: 100%;
    background-color: var(--secondary);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    border: none;
    text-align: left;
    color: var(--light);
    font-weight: 600;
    font-size: 1.1rem;
  }

  .faq-question:hover {
    background-color: #1a2631;
  }

  .faq-question i {
    transition: var(--transition);
  }

  .faq-item.active .faq-question i {
    transform: rotate(180deg);
  }

  .faq-answer {
    background-color: #1a2631;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
  }

  .faq-item.active .faq-answer {
    padding: 20px;
    max-height: 500px;
  }

  /* CTA Section */
  .cta {
    padding: 80px 0;
    background-color: var(--secondary);
    text-align: center;
  }

  .cta h2 {
    margin-left: auto;
    margin-right: auto;
  }

  .cta h2:after {
    left: 50%;
    transform: translateX(-50%);
  }

  .cta p {
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 30px;
  }

  .cta .btn {
    padding: 15px 30px;
    font-size: 1.1rem;
  }

  /* Responsive Design */
  @media (max-width: 768px) {
    h1 {
      font-size: 2rem;
    }

    h2 {
      font-size: 1.75rem;
    }

    .page-intro {
      padding: 60px 0;
    }

    .case-card {
      flex-direction: column;
    }

    .case-card img {
      width: 100%;
      height: 250px;
    }

    .methodology-content {
      flex-direction: column;
    }

    .methodology-content img {
      order: -1;
      width: 100%;
    }

    .rare-items-grid {
      grid-template-columns: 1fr;
    }
  }

  @media (max-width: 480px) {
    h1 {
      font-size: 1.75rem;
    }

    h2 {
      font-size: 1.5rem;
    }

    .case-stats {
      flex-direction: column;
      gap: 10px;
    }

    .stat {
      min-width: auto;
    }
  }

  /* Utility Classes */
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
  }