/* CSS cho trang chủ */
    .page-index-hero {
      background: linear-gradient(135deg, #1a2a6c, #b21f1f, #fdbb2d);
      color: #ffffff;
      padding: 80px 20px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .page-index-hero::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      opacity: 0.1;
      z-index: 0;
    }
    .page-index-hero-content {
      position: relative;
      z-index: 1;
      max-width: 900px;
      margin: 0 auto;
    }
    .page-index-hero h1 {
      font-size: 2.8em;
      margin-bottom: 20px;
      line-height: 1.2;
      color: #fff;
      text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    }
    .page-index-hero p {
      font-size: 1.2em;
      margin-bottom: 30px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
      color: #eee;
    }
    .page-index-button {
      display: inline-block;
      background-color: #fdbb2d;
      color: #1a2a6c;
      padding: 15px 30px;
      border-radius: 8px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    }
    .page-index-button:hover {
      background-color: #ffcc66;
      transform: translateY(-2px);
    }

    .page-index-section {
      padding: 60px 20px;
      background-color: #f9f9f9;
      text-align: center;
    }
    .page-index-section:nth-of-type(even) {
      background-color: #ffffff;
    }
    .page-index-section h2 {
      font-size: 2.2em;
      color: #1a2a6c;
      margin-bottom: 40px;
      position: relative;
      padding-bottom: 10px;
    }
    .page-index-section h2::after {
      content: '';
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      bottom: 0;
      width: 80px;
      height: 4px;
      background-color: #fdbb2d;
      border-radius: 2px;
    }
    .page-index-section p {
      font-size: 1.1em;
      line-height: 1.6;
      color: #333;
      max-width: 800px;
      margin: 0 auto 30px auto;
    }
    .page-index-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      max-width: 1200px;
      margin: 0 auto;
      margin-top: 40px;
    }
    .page-index-card {
      background-color: #ffffff;
      border-radius: 12px;
      box-shadow: 0 8px 25px rgba(0,0,0,0.1);
      padding: 30px;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      border: 1px solid #eee;
    }
    .page-index-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 12px 30px rgba(0,0,0,0.15);
    }
    .page-index-card img {
      max-width: 100%;
      height: 180px;
      object-fit: cover;
      border-radius: 8px;
      margin-bottom: 20px;
      border: 1px solid #f0f0f0;
    }
    .page-index-card h3 {
      font-size: 1.5em;
      color: #1a2a6c;
      margin-bottom: 15px;
      line-height: 1.3;
    }
    .page-index-card h3 a {
      color: #1a2a6c;
      text-decoration: none;
      transition: color 0.3s ease;
    }
    .page-index-card h3 a:hover {
      color: #fdbb2d;
    }
    .page-index-card p {
      font-size: 1em;
      color: #555;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .page-index-game-button {
      display: inline-block;
      background-color: #4CAF50; /* Green for game buttons */
      color: #ffffff;
      padding: 10px 20px;
      border-radius: 6px;
      text-decoration: none;
      font-weight: bold;
      font-size: 0.95em;
      transition: background-color 0.3s ease;
    }
    .page-index-game-button:hover {
      background-color: #45a049;
    }

    .page-index-usp-list {
      list-style: none;
      padding: 0;
      margin: 0 auto;
      max-width: 800px;
      text-align: left;
    }
    .page-index-usp-list li {
      background-color: #fff;
      margin-bottom: 15px;
      padding: 20px;
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0,0,0,0.05);
      display: flex;
      align-items: flex-start;
      font-size: 1.1em;
      color: #333;
      border-left: 5px solid #fdbb2d;
    }
    .page-index-usp-list li::before {
      content: '✓';
      color: #4CAF50;
      font-weight: bold;
      margin-right: 15px;
      font-size: 1.4em;
      line-height: 1;
    }

    .page-index-floating-cta {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #e74c3c; /* Red for urgency */
      color: #ffffff;
      padding: 15px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 5px 20px rgba(0,0,0,0.3);
      z-index: 1000;
      transition: transform 0.3s ease, background-color 0.3s ease;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .page-index-floating-cta:hover {
      background-color: #c0392b;
      transform: translateY(-3px);
    }
    .page-index-floating-cta span {
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.05); }
      100% { transform: scale(1); }
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-index-hero {
        padding: 60px 15px;
      }
      .page-index-hero h1 {
        font-size: 2em;
      }
      .page-index-hero p {
        font-size: 1em;
      }
      .page-index-button {
        padding: 12px 25px;
        font-size: 1em;
      }
      .page-index-section {
        padding: 40px 15px;
      }
      .page-index-section h2 {
        font-size: 1.8em;
      }
      .page-index-grid {
        grid-template-columns: 1fr;
      }
      .page-index-card {
        padding: 20px;
      }
      .page-index-card h3 {
        font-size: 1.3em;
      }
      .page-index-usp-list li {
        padding: 15px;
        font-size: 1em;
      }
      .page-index-floating-cta {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 0.9em;
      }
    }