:root {
      --page-primary-color: #e44d26; /* Cam đỏ */
      --page-secondary-color: #f7931e; /* Cam */
      --page-accent-color: #4CAF50; /* Xanh lá cây */
      --page-text-color: #333;
      --page-light-text-color: #f8f8f8;
      --page-background-color: #f0f2f5;
      --page-card-background: #ffffff;
      --page-border-radius: 8px;
      --page-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    }

    .page-game-ng-k-nh-n-th-ng-58k {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      line-height: 1.6;
      color: var(--page-text-color);
      background-color: var(--page-background-color);
      padding-top: 10px; /* Adjust for fixed header */
    }

    .page-game-ng-k-nh-n-th-ng-58k__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-game-ng-k-nh-n-th-ng-58k__hero-section {
      text-align: center;
      background: linear-gradient(135deg, var(--page-primary-color), var(--page-secondary-color));
      color: var(--page-light-text-color);
      padding: 60px 20px;
      border-radius: var(--page-border-radius);
      margin-bottom: 30px;
      box-shadow: var(--page-shadow);
      position: relative;
      overflow: hidden;
    }

    .page-game-ng-k-nh-n-th-ng-58k__hero-section::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: url('data:image/svg+xml;utf8,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="40" fill="%23ffffff" fill-opacity="0.1"/></svg>') repeat;
      opacity: 0.2;
      pointer-events: none;
    }

    .page-game-ng-k-nh-n-th-ng-58k__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      font-weight: 700;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }

    .page-game-ng-k-nh-n-th-ng-58k__hero-subtitle {
      font-size: 1.4em;
      margin-bottom: 30px;
      font-weight: 300;
    }

    .page-game-ng-k-nh-n-th-ng-58k__cta-button {
      display: inline-block;
      background-color: var(--page-accent-color);
      color: #fff;
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-size: 1.2em;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    }

    .page-game-ng-k-nh-n-th-ng-58k__cta-button:hover {
      background-color: #4CAF50; /* Slightly darker green */
      transform: translateY(-3px);
    }

    .page-game-ng-k-nh-n-th-ng-58k__section-title {
      font-size: 2.2em;
      color: var(--page-primary-color);
      text-align: center;
      margin-bottom: 40px;
      position: relative;
      padding-bottom: 10px;
    }

    .page-game-ng-k-nh-n-th-ng-58k__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-secondary-color);
      border-radius: 2px;
    }

    .page-game-ng-k-nh-n-th-ng-58k__grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-bottom: 40px;
    }

    .page-game-ng-k-nh-n-th-ng-58k__card {
      background-color: var(--page-card-background);
      border-radius: var(--page-border-radius);
      box-shadow: var(--page-shadow);
      padding: 25px;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      align-items: center;
      min-height: 250px;
      box-sizing: border-box;
    }

    .page-game-ng-k-nh-n-th-ng-58k__card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }

    .page-game-ng-k-nh-n-th-ng-58k__card-icon {
      width: 80px;
      height: 80px;
      margin-bottom: 20px;
      max-width: 100%;
      height: auto;
      border-radius: 50%;
      object-fit: cover;
    }

    .page-game-ng-k-nh-n-th-ng-58k__card-title {
      font-size: 1.5em;
      color: var(--page-primary-color);
      margin-bottom: 15px;
      font-weight: 600;
    }

    .page-game-ng-k-nh-n-th-ng-58k__card-description {
      font-size: 1em;
      color: var(--page-text-color);
    }

    .page-game-ng-k-nh-n-th-ng-58k__image-gallery {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
      margin-bottom: 40px;
    }

    .page-game-ng-k-nh-n-th-ng-58k__image-wrapper {
      background-color: var(--page-card-background);
      border-radius: var(--page-border-radius);
      overflow: hidden;
      box-shadow: var(--page-shadow);
      transition: transform 0.3s ease;
      box-sizing: border-box;
    }

    .page-game-ng-k-nh-n-th-ng-58k__image-wrapper:hover {
      transform: scale(1.02);
    }

    .page-game-ng-k-nh-n-th-ng-58k__image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      max-width: 100%;
      box-sizing: border-box;
    }

    .page-game-ng-k-nh-n-th-ng-58k__image-caption {
      padding: 15px;
      font-size: 1.1em;
      font-weight: 600;
      color: var(--page-text-color);
      text-align: center;
    }

    .page-game-ng-k-nh-n-th-ng-58k__steps-list {
      list-style: none;
      padding: 0;
      margin-bottom: 40px;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
    }

    .page-game-ng-k-nh-n-th-ng-58k__step-item {
      background-color: var(--page-card-background);
      border-left: 5px solid var(--page-primary-color);
      border-radius: var(--page-border-radius);
      padding: 20px;
      box-shadow: var(--page-shadow);
      transition: border-color 0.3s ease;
      box-sizing: border-box;
    }

    .page-game-ng-k-nh-n-th-ng-58k__step-item:hover {
      border-color: var(--page-secondary-color);
    }

    .page-game-ng-k-nh-n-th-ng-58k__step-number {
      font-size: 1.8em;
      font-weight: bold;
      color: var(--page-secondary-color);
      margin-bottom: 10px;
    }

    .page-game-ng-k-nh-n-th-ng-58k__step-title {
      font-size: 1.3em;
      font-weight: 600;
      color: var(--page-primary-color);
      margin-bottom: 10px;
    }

    .page-game-ng-k-nh-n-th-ng-58k__text-content {
      margin-bottom: 40px;
      background-color: var(--page-card-background);
      padding: 30px;
      border-radius: var(--page-border-radius);
      box-shadow: var(--page-shadow);
    }

    .page-game-ng-k-nh-n-th-ng-58k__text-content h2 {
      color: var(--page-primary-color);
      font-size: 1.8em;
      margin-bottom: 20px;
    }

    .page-game-ng-k-nh-n-th-ng-58k__text-content p {
      margin-bottom: 15px;
      font-size: 1.1em;
    }

    .page-game-ng-k-nh-n-th-ng-58k__text-content ul {
      list-style: disc;
      padding-left: 20px;
      margin-bottom: 15px;
    }

    .page-game-ng-k-nh-n-th-ng-58k__text-content li {
      margin-bottom: 8px;
      font-size: 1.05em;
    }

    .page-game-ng-k-nh-n-th-ng-58k__faq-section {
      margin-bottom: 40px;
      background-color: var(--page-card-background);
      padding: 30px;
      border-radius: var(--page-border-radius);
      box-shadow: var(--page-shadow);
    }

    .page-game-ng-k-nh-n-th-ng-58k__faq-item {
      border-bottom: 1px solid #eee;
      margin-bottom: 10px;
    }

    .page-game-ng-k-nh-n-th-ng-58k__faq-item:last-child {
      border-bottom: none;
      margin-bottom: 0;
    }

    .page-game-ng-k-nh-n-th-ng-58k__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px;
      font-size: 1.15em;
      font-weight: 600;
      color: var(--page-text-color);
      cursor: pointer;
      user-select: none;
      transition: background-color 0.3s ease;
    }

    .page-game-ng-k-nh-n-th-ng-58k__faq-question:hover {
      background-color: #f9f9f9;
    }

    .page-game-ng-k-nh-n-th-ng-58k__faq-question h3 {
      margin: 0;
      color: var(--page-primary-color);
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-game-ng-k-nh-n-th-ng-58k__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      width: 25px;
      height: 25px;
      display: flex;
      justify-content: center;
      align-items: center;
      border-radius: 50%;
      background-color: var(--page-secondary-color);
      color: var(--page-light-text-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click event */
    }

    .page-game-ng-k-nh-n-th-ng-58k__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      color: var(--page-text-color);
    }

    .page-game-ng-k-nh-n-th-ng-58k__faq-item.active .page-game-ng-k-nh-n-th-ng-58k__faq-answer {
      max-height: 2000px !important;
      padding: 20px 15px !important;
      opacity: 1;
    }

    .page-game-ng-k-nh-n-th-ng-58k__faq-item.active .page-game-ng-k-nh-n-th-ng-58k__faq-toggle {
      transform: rotate(45deg); /* Change '+' to 'X' or similar effect */
      background-color: var(--page-primary-color);
    }

    /* Floating Register/Login buttons */
    .page-game-ng-k-nh-n-th-ng-58k__floating-buttons {
      position: fixed;
      bottom: 20px;
      right: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 1000;
    }

    .page-game-ng-k-nh-n-th-ng-58k__floating-button {
      background-color: var(--page-primary-color);
      color: var(--page-light-text-color);
      padding: 12px 25px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      transition: background-color 0.3s ease, transform 0.3s ease;
      text-align: center;
      border: none;
      cursor: pointer;
    }

    .page-game-ng-k-nh-n-th-ng-58k__floating-button--register {
      background-color: var(--page-accent-color);
    }

    .page-game-ng-k-nh-n-th-ng-58k__floating-button:hover {
      transform: translateY(-3px);
      background-color: var(--page-secondary-color);
    }
    .page-game-ng-k-nh-n-th-ng-58k__floating-button--register:hover {
      background-color: #388E3C;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-game-ng-k-nh-n-th-ng-58k__hero-title {
        font-size: 2em;
      }

      .page-game-ng-k-nh-n-th-ng-58k__hero-subtitle {
        font-size: 1.1em;
      }

      .page-game-ng-k-nh-n-th-ng-58k__section-title {
        font-size: 1.8em;
      }

      .page-game-ng-k-nh-n-th-ng-58k__grid,
      .page-game-ng-k-nh-n-th-ng-58k__image-gallery,
      .page-game-ng-k-nh-n-th-ng-58k__steps-list {
        grid-template-columns: 1fr;
        gap: 20px;
      }

      .page-game-ng-k-nh-n-th-ng-58k__card,
      .page-game-ng-k-nh-n-th-ng-58k__step-item,
      .page-game-ng-k-nh-n-th-ng-58k__image-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
      
      .page-game-ng-k-nh-n-th-ng-58k__steps-list,
      .page-game-ng-k-nh-n-th-ng-58k__grid {
        padding: 0 !important;
      }
      
      .page-game-ng-k-nh-n-th-ng-58k__text-content ul,
      .page-game-ng-k-nh-n-th-ng-58k__text-content ol {
        padding-left: 15px !important;
      }

      .page-game-ng-k-nh-n-th-ng-58k__text-content li {
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-game-ng-k-nh-n-th-ng-58k__card-icon {
        width: 60px;
        height: 60px;
      }

      .page-game-ng-k-nh-n-th-ng-58k__image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
      .page-game-ng-k-nh-n-th-ng-58k__image-wrapper {
        max-width: 100% !important;
        width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }

      .page-game-ng-k-nh-n-th-ng-58k__floating-buttons {
        flex-direction: row;
        width: calc(100% - 40px);
        bottom: 10px;
        right: 20px;
        left: 20px;
        justify-content: space-around;
      }

      .page-game-ng-k-nh-n-th-ng-58k__floating-button {
        flex: 1;
        padding: 10px 15px;
        font-size: 0.9em;
      }
    }

    @media (max-width: 480px) {
      .page-game-ng-k-nh-n-th-ng-58k__hero-section {
        padding: 40px 15px;
      }
      .page-game-ng-k-nh-n-th-ng-58k__container {
        padding: 15px;
      }
      .page-game-ng-k-nh-n-th-ng-58k__floating-buttons {
        bottom: 10px;
        right: 10px;
        left: 10px;
        width: calc(100% - 20px);
      }
      .page-game-ng-k-nh-n-th-ng-58k__faq-question {
        font-size: 1em;
        padding: 10px;
      }
      .page-game-ng-k-nh-n-th-ng-58k__faq-answer {
        padding: 15px 10px !important;
      }
    }