:root {
      --page-bl55-primary-color: #e44d26; /* Cam đỏ */
      --page-bl55-secondary-color: #ff8c00; /* Cam đậm */
      --page-bl55-text-color: #333;
      --page-bl55-light-text-color: #fff;
      --page-bl55-background-color: #f5f5f5;
      --page-bl55-dark-background-color: #222;
      --page-bl55-card-background: #fff;
      --page-bl55-border-color: #eee;
    }

    .page-bl55 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-bl55-text-color);
      background-color: var(--page-bl55-background-color);
      padding-bottom: 80px; /* Space for floating button */
    }

    .page-bl55-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 15px;
    }

    .page-bl55-section {
      background-color: var(--page-bl55-card-background);
      margin-bottom: 20px;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    .page-bl55-hero {
      text-align: center;
      margin-bottom: 20px;
      padding: 0;
      background-color: transparent;
      box-shadow: none;
    }

    .page-bl55-hero-image {
      width: 100%;
      max-width: 100%;
      height: auto;
      border-radius: 8px;
      object-fit: cover;
      display: block;
      margin: 0 auto;
    }

    .page-bl55-hero h1 {
      color: var(--page-bl55-primary-color);
      font-size: 2.2em;
      margin-top: 15px;
      margin-bottom: 10px;
      text-align: center;
    }

    .page-bl55-hero p {
      font-size: 1.1em;
      color: var(--page-bl55-text-color);
      max-width: 800px;
      margin: 0 auto 20px auto;
      text-align: center;
    }

    .page-bl55-h2 {
      color: var(--page-bl55-primary-color);
      font-size: 1.8em;
      margin-bottom: 20px;
      text-align: center;
    }

    .page-bl55-h3 {
      color: var(--page-bl55-secondary-color);
      font-size: 1.4em;
      margin-bottom: 15px;
    }

    .page-bl55-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 15px;
      justify-content: center;
      align-items: stretch;
    }
    
    .page-bl55-grid-item {
      text-align: center;
      background-color: var(--page-bl55-card-background);
      padding: 15px;
      border-radius: 8px;
      box-shadow: 0 1px 3px rgba(0,0,0,0.08);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
    }

    .page-bl55-grid-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    }

    .page-bl55-grid-item img {
      max-width: 80px;
      height: auto;
      margin-bottom: 10px;
      border-radius: 4px;
    }

    .page-bl55-grid-item a {
      color: var(--page-bl55-text-color);
      text-decoration: none;
      font-weight: bold;
      font-size: 0.95em;
      display: block;
      width: 100%; /* Ensure link takes full width for clickability */
    }

    .page-bl55-grid-item a:hover {
      color: var(--page-bl55-primary-color);
    }

    .page-bl55-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .page-bl55-list li {
      background-color: var(--page-bl55-background-color);
      padding: 10px 15px;
      margin-bottom: 8px;
      border-radius: 5px;
      display: flex;
      align-items: center;
    }

    .page-bl55-list li::before {
      content: '✔';
      color: var(--page-bl55-primary-color);
      margin-right: 10px;
      font-weight: bold;
    }

    .page-bl55-btn {
      display: inline-block;
      background-color: var(--page-bl55-primary-color);
      color: var(--page-bl55-light-text-color);
      padding: 12px 25px;
      border-radius: 25px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
    }

    .page-bl55-btn:hover {
      background-color: var(--page-bl55-secondary-color);
      transform: translateY(-2px);
    }

    .page-bl55-floating-btn {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: var(--page-bl55-primary-color);
      color: var(--page-bl55-light-text-color);
      padding: 15px 30px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      z-index: 1000;
      animation: page-bl55-pulse 2s infinite;
      white-space: nowrap;
      display: block;
      text-align: center;
      max-width: 90%;
    }

    .page-bl55-floating-btn:hover {
      background-color: var(--page-bl55-secondary-color);
      animation: none;
    }

    @keyframes page-bl55-pulse {
      0% { transform: translateX(-50%) scale(1); box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); }
      50% { transform: translateX(-50%) scale(1.03); box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3); }
      100% { transform: translateX(-50%) scale(1); box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); }
    }

    .page-bl55-promo-card {
      background-color: var(--page-bl55-card-background);
      border: 1px solid var(--page-bl55-border-color);
      border-radius: 8px;
      padding: 15px;
      text-align: center;
      box-shadow: 0 2px 5px rgba(0,0,0,0.05);
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .page-bl55-promo-card img {
      max-width: 100%;
      height: auto;
      border-radius: 4px;
      margin-bottom: 10px;
    }

    .page-bl55-promo-card h3 {
      color: var(--page-bl55-primary-color);
      font-size: 1.2em;
      margin-bottom: 10px;
    }

    .page-bl55-promo-card p {
      font-size: 0.9em;
      color: #666;
      flex-grow: 1; /* Allow paragraph to take available space */
    }

    .page-bl55-promo-card .page-bl55-btn {
      margin-top: 15px;
      padding: 8px 18px;
      font-size: 0.9em;
    }

    .page-bl55-text-center {
      text-align: center;
    }

    .page-bl55-steps {
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .page-bl55-step-item {
      background-color: var(--page-bl55-background-color);
      padding: 15px;
      border-radius: 8px;
      display: flex;
      align-items: flex-start;
      box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    }

    .page-bl55-step-item .step-number {
      background-color: var(--page-bl55-primary-color);
      color: var(--page-bl55-light-text-color);
      width: 30px;
      height: 30px;
      min-width: 30px; /* Ensure it doesn't shrink */
      border-radius: 50%;
      display: flex;
      justify-content: center;
      align-items: center;
      font-weight: bold;
      margin-right: 15px;
      font-size: 1.1em;
    }

    .page-bl55-step-item .step-content h3 {
      margin-top: 0;
      color: var(--page-bl55-secondary-color);
      font-size: 1.1em;
    }

    .page-bl55-step-item .step-content p {
      margin-bottom: 0;
      font-size: 0.95em;
    }

    /* Responsive adjustments */
    @media (min-width: 768px) {
      .page-bl55-hero h1 {
        font-size: 2.8em;
      }
      .page-bl55-h2 {
        font-size: 2.2em;
      }
      .page-bl55-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      }
      .page-bl55-floating-btn {
        bottom: 30px;
        padding: 18px 40px;
        font-size: 1.3em;
      }
      .page-bl55-steps {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
      }
      .page-bl55-step-item {
        flex: 1 1 calc(50% - 15px); /* Two columns on larger screens */
        max-width: calc(50% - 15px);
      }
    }

    @media (min-width: 1024px) {
      .page-bl55-container {
        padding: 20px;
      }
      .page-bl55-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      }
      .page-bl55-step-item {
        flex: 1 1 calc(33.333% - 20px); /* Three columns on larger screens */
        max-width: calc(33.333% - 20px);
      }
    }