:root {
      --page-123b-primary-color: #e44d26; /* Cam đỏ */
      --page-123b-secondary-color: #333; /* Đen xám */
      --page-123b-accent-color: #f7b731; /* Vàng cam */
      --page-123b-background-light: #f5f5f5; /* Xám nhạt */
      --page-123b-text-color: #333; /* Đen xám */
      --page-123b-white: #ffffff;
      --page-123b-border-radius: 8px;
      --page-123b-spacing-sm: 10px;
      --page-123b-spacing-md: 20px;
      --page-123b-spacing-lg: 30px;
    }

    .page-123b {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-123b-text-color);
      background-color: var(--page-123b-background-light);
      padding-bottom: 80px; /* Space for floating buttons */
    }

    .page-123b-section {
      padding: var(--page-123b-spacing-md) var(--page-123b-spacing-sm);
      max-width: 1200px;
      margin: 0 auto;
    }

    .page-123b-hero {
      text-align: center;
      background: linear-gradient(135deg, var(--page-123b-primary-color), #ff6f61);
      color: var(--page-123b-white);
      padding: var(--page-123b-spacing-lg) var(--page-123b-spacing-sm);
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }

    .page-123b-hero-banner {
      width: 100%;
      max-width: 600px; /* Adjust for mobile-first banner */
      height: auto;
      border-radius: var(--page-123b-border-radius);
      margin-bottom: var(--page-123b-spacing-md);
      object-fit: cover;
    }

    .page-123b-hero h1 {
      font-size: 2.2em;
      margin-top: 0;
      margin-bottom: var(--page-123b-spacing-sm);
      color: var(--page-123b-white);
      text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    }

    .page-123b-hero p {
      font-size: 1.1em;
      margin-bottom: var(--page-123b-spacing-md);
      max-width: 800px;
      text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
    }

    .page-123b-btn {
      display: inline-block;
      background-color: var(--page-123b-accent-color);
      color: var(--page-123b-secondary-color);
      padding: 12px 25px;
      border-radius: var(--page-123b-border-radius);
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
      font-size: 1em;
      box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }

    .page-123b-btn:hover {
      background-color: #f0a000;
      transform: translateY(-2px);
    }

    .page-123b-floating-buttons {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background-color: rgba(0, 0, 0, 0.8);
      display: flex;
      justify-content: space-around;
      padding: var(--page-123b-spacing-sm);
      box-shadow: 0 -2px 10px rgba(0,0,0,0.2);
      z-index: 1000;
    }

    .page-123b-floating-buttons .page-123b-btn {
      flex: 1;
      margin: 0 5px;
      text-align: center;
      font-size: 0.95em;
      padding: 10px 15px;
    }

    .page-123b-title {
      font-size: 2em;
      color: var(--page-123b-primary-color);
      text-align: center;
      margin-bottom: var(--page-123b-spacing-lg);
      position: relative;
      padding-bottom: 10px;
    }

    .page-123b-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 60px;
      height: 4px;
      background-color: var(--page-123b-accent-color);
      border-radius: 2px;
    }

    .page-123b-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: var(--page-123b-spacing-md);
      margin-top: var(--page-123b-spacing-md);
    }

    .page-123b-card {
      background-color: var(--page-123b-white);
      border-radius: var(--page-123b-border-radius);
      box-shadow: 0 4px 12px rgba(0,0,0,0.08);
      padding: var(--page-123b-spacing-md);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-start;
    }

    .page-123b-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 16px rgba(0,0,0,0.12);
    }

    .page-123b-card img {
      width: 100%;
      max-width: 250px;
      height: 150px;
      object-fit: cover;
      border-radius: var(--page-123b-border-radius);
      margin-bottom: var(--page-123b-spacing-sm);
    }

    .page-123b-card h3 {
      font-size: 1.3em;
      color: var(--page-123b-primary-color);
      margin-bottom: var(--page-123b-spacing-sm);
    }

    .page-123b-card p {
      font-size: 0.95em;
      color: var(--page-123b-secondary-color);
      flex-grow: 1; /* Allow paragraph to take available space */
    }

    .page-123b-card .page-123b-btn {
      margin-top: var(--page-123b-spacing-sm);
      font-size: 0.9em;
      padding: 8px 15px;
    }

    .page-123b-list {
      list-style: none;
      padding: 0;
      margin-top: var(--page-123b-spacing-md);
    }

    .page-123b-list li {
      background-color: var(--page-123b-white);
      margin-bottom: var(--page-123b-spacing-sm);
      padding: var(--page-123b-spacing-sm) var(--page-123b-spacing-md);
      border-left: 5px solid var(--page-123b-primary-color);
      border-radius: var(--page-123b-border-radius);
      box-shadow: 0 2px 5px rgba(0,0,0,0.05);
      display: flex;
      align-items: center;
    }

    .page-123b-list li strong {
      color: var(--page-123b-primary-color);
      margin-right: 10px;
    }

    .page-123b-text-center {
      text-align: center;
    }

    .page-123b-link {
      color: var(--page-123b-primary-color);
      text-decoration: none;
      font-weight: bold;
      transition: color 0.3s ease;
    }

    .page-123b-link:hover {
      color: var(--page-123b-accent-color);
      text-decoration: underline;
    }

    .page-123b-faq-item {
      background-color: var(--page-123b-white);
      border-radius: var(--page-123b-border-radius);
      margin-bottom: var(--page-123b-spacing-sm);
      box-shadow: 0 2px 5px rgba(0,0,0,0.05);
      overflow: hidden;
    }

    .page-123b-faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: var(--page-123b-spacing-md);
      background-color: #eee;
      cursor: pointer;
      font-weight: bold;
      color: var(--page-123b-secondary-color);
      transition: background-color 0.3s ease;
    }

    .page-123b-faq-question:hover {
      background-color: #e0e0e0;
    }

    .page-123b-faq-answer {
      padding: var(--page-123b-spacing-md);
      background-color: var(--page-123b-white);
      border-top: 1px solid #eee;
      display: none;
    }

    .page-123b-faq-answer p {
      margin-bottom: 0;
    }

    /* Responsive adjustments */
    @media (min-width: 768px) {
      .page-123b-hero-banner {
        max-width: 800px;
      }
      .page-123b-hero h1 {
        font-size: 3em;
      }
      .page-123b-floating-buttons {
        justify-content: center;
      }
      .page-123b-floating-buttons .page-123b-btn {
        max-width: 200px;
        font-size: 1em;
      }
      .page-123b-section {
        padding: var(--page-123b-spacing-lg) var(--page-123b-spacing-md);
      }
    }