:root {
      --page-s66-primary-color: #e44d26; /* Màu cam đỏ mạnh */
      --page-s66-secondary-color: #f7b731; /* Màu vàng cam */
      --page-s66-dark-text: #2c3e50; /* Gần đen */
      --page-s66-light-text: #ecf0f1; /* Gần trắng */
      --page-s66-background-light: #fdfdfd; /* Trắng nhẹ */
      --page-s66-background-dark: #34495e; /* Xám xanh đậm */
      --page-s66-accent-color: #2ecc71; /* Xanh lá cây */
      --page-s66-border-color: #ddd;
    }

    .page-s66 {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--page-s66-dark-text);
      background-color: var(--page-s66-background-light);
      padding: 20px 0;
    }

    .page-s66 a {
      color: var(--page-s66-primary-color);
      text-decoration: none;
      transition: color 0.3s ease;
    }

    .page-s66 a:hover {
      color: var(--page-s66-secondary-color);
      text-decoration: underline;
    }

    .page-s66 .page-s66-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-s66 .page-s66-hero {
      background: linear-gradient(135deg, var(--page-s66-primary-color) 0%, var(--page-s66-secondary-color) 100%);
      color: var(--page-s66-light-text);
      padding: 60px 20px;
      text-align: center;
      border-radius: 10px;
      margin-bottom: 40px;
      box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
    }

    .page-s66 .page-s66-hero h1 {
      font-size: 2.8em;
      margin-bottom: 20px;
      line-height: 1.2;
      color: var(--page-s66-light-text);
    }

    .page-s66 .page-s66-hero p {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      color: var(--page-s66-light-text);
    }

    .page-s66 .page-s66-btn {
      display: inline-block;
      background-color: var(--page-s66-accent-color);
      color: var(--page-s66-light-text);
      padding: 12px 25px;
      border-radius: 5px;
      font-weight: bold;
      text-transform: uppercase;
      margin: 0 10px;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    .page-s66 .page-s66-btn:hover {
      background-color: #27ae60;
      transform: translateY(-2px);
      text-decoration: none;
    }

    .page-s66 .page-s66-section {
      background-color: var(--page-s66-background-light);
      padding: 40px 0;
      border-bottom: 1px solid var(--page-s66-border-color);
    }

    .page-s66 .page-s66-section:last-of-type {
      border-bottom: none;
    }

    .page-s66 .page-s66-section h2 {
      font-size: 2.2em;
      color: var(--page-s66-primary-color);
      text-align: center;
      margin-bottom: 30px;
      position: relative;
      padding-bottom: 15px;
    }

    .page-s66 .page-s66-section h2::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-s66-secondary-color);
      border-radius: 2px;
    }

    .page-s66 .page-s66-section h3 {
      font-size: 1.8em;
      color: var(--page-s66-dark-text);
      margin-top: 30px;
      margin-bottom: 15px;
      border-left: 5px solid var(--page-s66-primary-color);
      padding-left: 10px;
    }

    .page-s66 .page-s66-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-s66 .page-s66-card {
      background-color: #fff;
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
      padding: 25px;
      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-s66 .page-s66-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
    }

    .page-s66 .page-s66-card img {
      max-width: 100%;
      height: 150px;
      object-fit: cover;
      border-radius: 5px;
      margin-bottom: 15px;
      display: block;
    }

    .page-s66 .page-s66-card h4 {
      font-size: 1.3em;
      color: var(--page-s66-primary-color);
      margin-bottom: 10px;
    }

    .page-s66 .page-s66-card p {
      font-size: 0.95em;
      color: var(--page-s66-dark-text);
      flex-grow: 1;
    }

    .page-s66 .page-s66-list {
      list-style: none;
      padding: 0;
    }

    .page-s66 .page-s66-list li {
      background-color: #fff;
      margin-bottom: 10px;
      padding: 15px 20px;
      border-radius: 5px;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
      display: flex;
      align-items: center;
    }

    .page-s66 .page-s66-list li::before {
      content: '✔';
      color: var(--page-s66-accent-color);
      font-weight: bold;
      margin-right: 10px;
    }

    .page-s66 .page-s66-steps {
      counter-reset: step-counter;
      list-style: none;
      padding: 0;
    }

    .page-s66 .page-s66-steps li {
      background-color: #fff;
      margin-bottom: 15px;
      padding: 20px;
      border-radius: 8px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.07);
      display: flex;
      align-items: flex-start;
      position: relative;
    }

    .page-s66 .page-s66-steps li::before {
      counter-increment: step-counter;
      content: counter(step-counter);
      background-color: var(--page-s66-primary-color);
      color: var(--page-s66-light-text);
      width: 35px;
      height: 35px;
      border-radius: 50%;
      display: flex;
      justify-content: center;
      align-items: center;
      font-weight: bold;
      font-size: 1.1em;
      margin-right: 15px;
      flex-shrink: 0;
    }

    .page-s66 .page-s66-steps li strong {
      color: var(--page-s66-primary-color);
      font-size: 1.1em;
      display: block;
      margin-bottom: 5px;
    }

    .page-s66 .page-s66-faq-item {
      background-color: #fff;
      margin-bottom: 15px;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      overflow: hidden;
    }

    .page-s66 .page-s66-faq-question {
      padding: 18px 25px;
      background-color: var(--page-s66-background-light);
      border-bottom: 1px solid var(--page-s66-border-color);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: bold;
      color: var(--page-s66-dark-text);
      transition: background-color 0.3s ease;
    }

    .page-s66 .page-s66-faq-question:hover {
      background-color: #f0f0f0;
    }

    .page-s66 .page-s66-faq-question::after {
      content: '+';
      font-size: 1.5em;
      color: var(--page-s66-primary-color);
      transition: transform 0.3s ease;
    }

    .page-s66 .page-s66-faq-question.active::after {
      content: '−';
      transform: rotate(180deg);
    }

    .page-s66 .page-s66-faq-answer {
      padding: 15px 25px;
      color: var(--page-s66-dark-text);
      background-color: #fff;
      display: none;
    }

    .page-s66 .page-s66-cta-banner {
      background: var(--page-s66-background-dark);
      color: var(--page-s66-light-text);
      padding: 50px 20px;
      text-align: center;
      border-radius: 10px;
      margin-top: 40px;
      box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
    }

    .page-s66 .page-s66-cta-banner h2 {
      color: var(--page-s66-light-text);
      margin-bottom: 20px;
    }

    .page-s66 .page-s66-cta-banner p {
      font-size: 1.1em;
      margin-bottom: 30px;
      color: var(--page-s66-light-text);
    }

    .page-s66 .page-s66-floating-ad {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-s66-accent-color);
      color: var(--page-s66-light-text);
      padding: 15px 20px;
      border-radius: 10px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      z-index: 1000;
      display: flex;
      align-items: center;
      gap: 10px;
      animation: page-s66-pulse 2s infinite;
    }

    .page-s66 .page-s66-floating-ad:hover {
      transform: scale(1.05);
      animation: none;
    }

    .page-s66 .page-s66-floating-ad .page-s66-btn {
      background-color: var(--page-s66-secondary-color);
      color: var(--page-s66-dark-text);
      padding: 8px 15px;
      margin: 0;
    }

    .page-s66 .page-s66-floating-ad .page-s66-btn:hover {
      background-color: #e6a020;
    }

    @keyframes page-s66-pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.02); }
      100% { transform: scale(1); }
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-s66 .page-s66-hero h1 {
        font-size: 2em;
      }
      .page-s66 .page-s66-hero p {
        font-size: 1em;
      }
      .page-s66 .page-s66-section h2 {
        font-size: 1.8em;
      }
      .page-s66 .page-s66-section h3 {
        font-size: 1.5em;
      }
      .page-s66 .page-s66-btn {
        padding: 10px 20px;
        margin: 5px;
      }
      .page-s66 .page-s66-grid {
        grid-template-columns: 1fr;
      }
      .page-s66 .page-s66-floating-ad {
        bottom: 10px;
        right: 10px;
        padding: 10px 15px;
        font-size: 0.9em;
      }
    }