:root {
      --page-678hi-primary-color: #e44d26; /* Cam đỏ */
      --page-678hi-secondary-color: #333; /* Xám đậm */
      --page-678hi-accent-color: #ffcc00; /* Vàng */
      --page-678hi-text-color: #f5f5f5; /* Trắng nhạt */
      --page-678hi-dark-bg: #1a1a1a; /* Nền rất tối */
      --page-678hi-light-bg: #2a2a2a; /* Nền tối vừa */
      --page-678hi-border-radius: 8px;
      --page-678hi-transition-speed: 0.3s;
    }

    .page-678hi {
      font-family: 'Arial', sans-serif;
      background-color: var(--page-678hi-dark-bg);
      color: var(--page-678hi-text-color);
      line-height: 1.6;
      padding-top: 10px; /* Small top padding for aesthetic spacing, assuming body padding handles header offset */
    }

    .page-678hi__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    .page-678hi__section {
      padding: 40px 20px;
      margin-bottom: 30px;
      border-radius: var(--page-678hi-border-radius);
      background-color: var(--page-678hi-light-bg);
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }
    
    .page-678hi__section--dark {
        background-color: var(--page-678hi-secondary-color);
    }

    .page-678hi__heading {
      text-align: center;
      color: var(--page-678hi-primary-color);
      margin-bottom: 30px;
      font-size: 2.5em;
      font-weight: bold;
    }

    .page-678hi__sub-heading {
      text-align: center;
      color: var(--page-678hi-accent-color);
      margin-bottom: 20px;
      font-size: 1.8em;
    }

    /* Hero Section */
    .page-678hi__hero-section {
      text-align: center;
      padding: 60px 20px;
      background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('[GALLERY:hero:1920x1080:gaming,abstract,neon]') no-repeat center center/cover;
      color: #fff;
      margin-bottom: 0;
    }

    .page-678hi__hero-title {
      font-size: 3.5em;
      margin-bottom: 15px;
      color: var(--page-678hi-accent-color);
      text-shadow: 2px 2px 4px rgba(0,0,0,0.7);
    }

    .page-678hi__hero-subtitle {
      font-size: 1.5em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-678hi__hero-button {
      background-color: var(--page-678hi-primary-color);
      color: #fff;
      padding: 15px 30px;
      border: none;
      border-radius: var(--page-678hi-border-radius);
      font-size: 1.2em;
      cursor: pointer;
      transition: background-color var(--page-678hi-transition-speed) ease;
      text-decoration: none;
      display: inline-block;
      margin: 10px;
    }

    .page-678hi__hero-button:hover {
      background-color: #c0392b; /* Darker red */
    }

    /* Floating Buttons */
    .page-678hi__floating-buttons {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      gap: 15px;
      z-index: 1000;
      width: 90%;
      max-width: 380px;
    }

    .page-678hi__floating-button {
      flex: 1;
      padding: 12px 0;
      background-color: var(--page-678hi-primary-color);
      color: #fff;
      border: none;
      border-radius: 50px;
      font-size: 1.1em;
      font-weight: bold;
      cursor: pointer;
      text-align: center;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
      transition: background-color var(--page-678hi-transition-speed) ease;
    }

    .page-678hi__floating-button--secondary {
      background-color: var(--page-678hi-accent-color);
      color: var(--page-678hi-secondary-color);
    }

    .page-678hi__floating-button:hover {
      background-color: #c0392b;
    }

    .page-678hi__floating-button--secondary:hover {
      background-color: #e6b800;
    }

    /* Product Grid */
    .page-678hi__product-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      justify-content: center;
    }

    .page-678hi__product-card {
      background-color: var(--page-678hi-dark-bg);
      border-radius: var(--page-678hi-border-radius);
      overflow: hidden;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
      text-align: center;
      transition: transform var(--page-678hi-transition-speed) ease;
      border: 1px solid var(--page-678hi-secondary-color);
    }

    .page-678hi__product-card:hover {
      transform: translateY(-5px);
    }

    .page-678hi__product-image {
      width: 100%;
      height: 200px; /* Fixed height for consistency */
      object-fit: cover;
      display: block;
      border-bottom: 1px solid var(--page-678hi-secondary-color);
    }

    .page-678hi__product-content {
      padding: 20px;
    }

    .page-678hi__product-title {
      font-size: 1.4em;
      margin-bottom: 10px;
      color: var(--page-678hi-accent-color);
    }

    .page-678hi__product-description {
      font-size: 0.95em;
      color: var(--page-678hi-text-color);
      margin-bottom: 15px;
    }
    
    .page-678hi__button {
      background-color: var(--page-678hi-primary-color);
      color: #fff;
      padding: 10px 20px;
      border: none;
      border-radius: var(--page-678hi-border-radius);
      font-size: 1em;
      cursor: pointer;
      transition: background-color var(--page-678hi-transition-speed) ease;
      display: inline-block;
      text-decoration: none;
    }

    .page-678hi__button:hover {
      background-color: #c0392b;
    }

    /* Promotions Section */
    .page-678hi__promotions-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
    }

    .page-678hi__promo-card {
      background-color: var(--page-678hi-dark-bg);
      border-radius: var(--page-678hi-border-radius);
      padding: 25px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
      text-align: left;
      border: 1px solid var(--page-678hi-secondary-color);
    }

    .page-678hi__promo-title {
      font-size: 1.5em;
      color: var(--page-678hi-primary-color);
      margin-bottom: 15px;
    }

    .page-678hi__promo-description {
      font-size: 1em;
      color: var(--page-678hi-text-color);
      margin-bottom: 20px;
    }
    
    .page-678hi__promo-link {
        color: var(--page-678hi-accent-color);
        text-decoration: none;
        font-weight: bold;
        transition: color var(--page-678hi-transition-speed) ease;
    }
    .page-678hi__promo-link:hover {
        color: #fff;
    }

    /* Why Choose Us Section */
    .page-678hi__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 20px;
    }

    .page-678hi__feature-item {
      background-color: var(--page-678hi-dark-bg);
      padding: 25px;
      border-radius: var(--page-678hi-border-radius);
      text-align: center;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
      border: 1px solid var(--page-678hi-secondary-color);
    }

    .page-678hi__feature-icon {
      width: 80px;
      height: 80px;
      margin-bottom: 15px;
      display: block;
      margin-left: auto;
      margin-right: auto;
      object-fit: contain;
    }

    .page-678hi__feature-title {
      font-size: 1.2em;
      color: var(--page-678hi-primary-color);
      margin-bottom: 10px;
    }

    .page-678hi__feature-description {
      font-size: 0.9em;
      color: var(--page-678hi-text-color);
    }

    /* FAQ Section */
    .page-678hi__faq-list {
      max-width: 800px;
      margin: 0 auto;
    }

    .page-678hi__faq-item {
      background-color: var(--page-678hi-dark-bg);
      border: 1px solid var(--page-678hi-secondary-color);
      border-radius: var(--page-678hi-border-radius);
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    .page-678hi__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      background-color: var(--page-678hi-secondary-color);
      color: var(--page-678hi-text-color);
      font-size: 1.1em;
      font-weight: bold;
      transition: background-color var(--page-678hi-transition-speed) ease;
      user-select: none;
    }

    .page-678hi__faq-question h3 {
      margin: 0;
      color: var(--page-678hi-accent-color);
      pointer-events: none; /* Prevent h3 from blocking click on parent div */
    }

    .page-678hi__faq-question:hover {
      background-color: #444;
    }

    .page-678hi__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      transition: transform var(--page-678hi-transition-speed) ease;
      color: var(--page-678hi-primary-color);
      pointer-events: none; /* Prevent toggle icon from blocking click on parent div */
    }

    .page-678hi__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-678hi-text-color);
    }

    .page-678hi__faq-item.active .page-678hi__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px 15px !important;
      opacity: 1;
    }

    .page-678hi__faq-item.active .page-678hi__faq-toggle {
      transform: rotate(45deg); /* Change '+' to 'x' or '-' */
    }

    /* Partners & Payments */
    .page-678hi__partners-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      gap: 20px;
      justify-items: center;
      align-items: center;
    }

    .page-678hi__partner-logo {
      max-width: 100%;
      height: auto;
      max-height: 80px;
      object-fit: contain;
      filter: grayscale(100%) brightness(1.5);
      transition: filter var(--page-678hi-transition-speed) ease;
    }

    .page-678hi__partner-logo:hover {
      filter: grayscale(0%) brightness(1);
    }

    /* Call to Action */
    .page-678hi__cta-section {
      text-align: center;
      padding: 50px 20px;
      background-color: var(--page-678hi-primary-color);
      color: #fff;
      border-radius: var(--page-678hi-border-radius);
      margin-bottom: 0;
    }

    .page-678hi__cta-title {
      font-size: 2.2em;
      margin-bottom: 20px;
      color: var(--page-678hi-accent-color);
    }

    .page-678hi__cta-text {
      font-size: 1.1em;
      margin-bottom: 30px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    /* General Image Styling */
    .page-678hi img {
      max-width: 100%;
      height: auto;
      display: block; /* Remove extra space below images */
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-678hi__heading {
        font-size: 2em;
      }

      .page-678hi__hero-title {
        font-size: 2.5em;
      }

      .page-678hi__hero-subtitle {
        font-size: 1.2em;
      }

      .page-678hi__product-grid,
      .page-678hi__promotions-grid,
      .page-678hi__features-grid {
        grid-template-columns: 1fr;
      }

      .page-678hi__floating-buttons {
        width: 95%;
        bottom: 15px;
        gap: 10px;
      }

      .page-678hi__floating-button {
        font-size: 1em;
        padding: 10px 0;
      }
      
      .page-678hi__faq-answer {
          padding: 0 10px;
      }
      .page-678hi__faq-item.active .page-678hi__faq-answer {
          padding: 15px 10px !important;
      }
      .page-678hi__faq-question {
          padding: 12px 15px;
          font-size: 1em;
      }
      
      .page-678hi__container {
          padding: 10px;
      }

      .page-678hi__section {
          padding: 20px 15px;
      }
      
      /* Ensure list items are 100% width on mobile */
      .page-678hi__features-grid .page-678hi__feature-item,
      .page-678hi__promotions-grid .page-678hi__promo-card,
      .page-678hi__product-grid .page-678hi__product-card {
          width: 100% !important;
          max-width: 100% !important;
          box-sizing: border-box !important;
          margin-left: 0 !important;
          margin-right: 0 !important;
          word-wrap: break-word !important;
          overflow-wrap: break-word !important;
          word-break: break-word !important;
      }
      .page-678hi__features-grid,
      .page-678hi__promotions-grid,
      .page-678hi__product-grid {
          width: 100% !important;
          max-width: 100% !important;
          box-sizing: border-box !important;
          padding: 0 !important;
          margin-left: 0 !important;
          margin-right: 0 !important;
      }

      .page-678hi__partner-logo {
        max-height: 60px;
      }
    }

    @media (max-width: 480px) {
      .page-678hi__hero-title {
        font-size: 2em;
      }
      .page-678hi__hero-subtitle {
        font-size: 1em;
      }
      .page-678hi__floating-buttons {
        gap: 8px;
        bottom: 10px;
      }
      .page-678hi__floating-button {
        font-size: 0.9em;
        padding: 8px 0;
      }
    }