/* Tổng quan và reset */
    .page-bl555 {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      color: #333;
      line-height: 1.6;
      background-color: #f9f9f9;
      padding-bottom: 80px; /* Dành chỗ cho nút nổi */
    }

    .page-bl555__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    /* Hero Section */
    .page-bl555__hero-section {
      position: relative;
      background: linear-gradient(135deg, #0056b3, #007bff);
      color: #fff;
      text-align: center;
      padding: 10px 0 60px 0; /* Adjusted padding-top for fixed header */
      overflow: hidden;
      border-radius: 0 0 20px 20px;
    }
    @media (max-width: 768px) {
      .page-bl555__hero-section {
        padding-top: 10px; /* Ensure consistency for mobile */
      }
    }

    .page-bl555__hero-banner {
      width: 100%;
      height: auto;
      max-width: 100%;
      display: block;
      margin: 0 auto;
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .page-bl555__hero-content {
      position: relative;
      z-index: 2;
      padding: 20px 15px;
    }

    .page-bl555__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      font-weight: 700;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
      color: #ffd700; /* Gold color for emphasis */
    }

    .page-bl555__hero-subtitle {
      font-size: 1.3em;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      color: #e0e0e0;
    }

    .page-bl555__cta-button {
      display: inline-block;
      background-color: #ffc107;
      color: #333;
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      border: none;
      cursor: pointer;
    }

    .page-bl555__cta-button:hover {
      background-color: #e0a800;
      transform: translateY(-2px);
    }

    /* Floating Login Button */
    .page-bl555__floating-button {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: #dc3545; /* Red for urgency/promotion */
      color: #fff;
      padding: 15px 25px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      z-index: 1000;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      transition: background-color 0.3s ease, transform 0.2s ease;
      animation: page-bl555__pulse 2s infinite;
      border: none;
      cursor: pointer;
      white-space: nowrap; /* Prevent text wrapping */
    }

    .page-bl555__floating-button:hover {
      background-color: #c82333;
      transform: translateX(-50%) translateY(-3px);
    }

    @keyframes page-bl555__pulse {
      0% { transform: translateX(-50%) scale(1); }
      50% { transform: translateX(-50%) scale(1.03); }
      100% { transform: translateX(-50%) scale(1); }
    }

    /* General Section Styling */
    .page-bl555__section {
      padding: 40px 0;
      margin-bottom: 20px;
    }

    .page-bl555__section-light {
      background-color: #fff;
      border-radius: 10px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }

    .page-bl555__section-dark {
      background-color: #e2f0ff;
      border-radius: 10px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }

    .page-bl555__section-title {
      font-size: 2.2em;
      color: #0056b3;
      text-align: center;
      margin-bottom: 30px;
      font-weight: 700;
      position: relative;
    }

    .page-bl555__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      bottom: -10px;
      width: 60px;
      height: 4px;
      background-color: #ffc107;
      border-radius: 2px;
    }

    .page-bl555__text-center {
      text-align: center;
    }

    /* About Section */
    .page-bl555__about-content {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 30px;
    }

    .page-bl555__about-image-wrapper {
      flex: 1;
      min-width: 300px;
      text-align: center;
    }

    .page-bl555__about-image {
      width: 100%;
      height: auto;
      max-width: 600px;
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    }

    .page-bl555__about-text {
      flex: 2;
      min-width: 300px;
    }

    .page-bl555__about-text h3 {
      font-size: 1.8em;
      color: #0056b3;
      margin-bottom: 15px;
    }

    .page-bl555__about-text p {
      margin-bottom: 10px;
      font-size: 1.1em;
    }

    /* Game Categories */
    .page-bl555__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-bl555__game-card {
      background-color: #fff;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: center;
      padding-bottom: 20px;
    }

    .page-bl555__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }

    .page-bl555__game-image-wrapper {
      width: 100%;
      height: 200px; /* Fixed height for consistency */
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      background-color: #f0f0f0;
    }

    .page-bl555__game-image {
      width: 100%;
      height: auto;
      max-width: 100%;
      object-fit: cover; /* Ensure image covers the area */
    }

    .page-bl555__game-title {
      font-size: 1.5em;
      color: #0056b3;
      margin: 20px 15px 10px 15px;
      font-weight: 600;
    }

    .page-bl555__game-description {
      font-size: 0.95em;
      color: #555;
      padding: 0 15px;
      margin-bottom: 15px;
    }

    /* Promotions */
    .page-bl555__promo-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
    }

    .page-bl555__promo-item {
      background-color: #fff;
      padding: 25px;
      border-radius: 10px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      transition: transform 0.3s ease;
      display: flex;
      align-items: flex-start;
      gap: 15px;
    }

    .page-bl555__promo-item:hover {
      transform: translateY(-3px);
    }

    .page-bl555__promo-icon {
      font-size: 2.5em;
      color: #ffc107;
      flex-shrink: 0;
      line-height: 1;
    }

    .page-bl555__promo-content h3 {
      font-size: 1.4em;
      color: #0056b3;
      margin-top: 0;
      margin-bottom: 10px;
    }

    .page-bl555__promo-content p {
      font-size: 1em;
      color: #555;
    }

    /* How to Get Started */
    .page-bl555__steps-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 30px;
      margin-top: 30px;
    }

    .page-bl555__step-card {
      background-color: #fff;
      padding: 30px;
      border-radius: 10px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      text-align: center;
      transition: transform 0.3s ease;
    }

    .page-bl555__step-card:hover {
      transform: translateY(-5px);
    }

    .page-bl555__step-icon {
      font-size: 3em;
      color: #007bff;
      margin-bottom: 15px;
    }

    .page-bl555__step-title {
      font-size: 1.5em;
      color: #0056b3;
      margin-bottom: 10px;
    }

    .page-bl555__step-description {
      font-size: 1em;
      color: #555;
    }

    /* FAQ Section */
    .page-bl555__faq-list {
      list-style: none;
      padding: 0;
      margin: 0;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-bl555__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-bl555__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 20px;
      background-color: #007bff;
      color: #fff;
      cursor: pointer;
      font-size: 1.2em;
      font-weight: 600;
      border-radius: 8px;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-bl555__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: #fff;
      pointer-events: none; /* Prevent h3 from blocking click event */
    }

    .page-bl555__faq-question:hover {
      background-color: #0056b3;
    }

    .page-bl555__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click event */
    }

    .page-bl555__faq-item.active .page-bl555__faq-toggle {
      transform: rotate(45deg); /* Change + to X or similar */
    }

    .page-bl555__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px; /* Initial padding */
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      background-color: #f0f8ff;
      color: #333;
      border-bottom-left-radius: 8px;
      border-bottom-right-radius: 8px;
    }

    .page-bl555__faq-item.active .page-bl555__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 20px !important; /* Final padding */
      opacity: 1;
    }

    /* Mobile Responsiveness */
    @media (max-width: 768px) {
      .page-bl555__hero-title {
        font-size: 2em;
      }

      .page-bl555__hero-subtitle {
        font-size: 1em;
      }

      .page-bl555__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-bl555__floating-button {
        padding: 12px 20px;
        font-size: 0.95em;
        bottom: 15px;
      }

      .page-bl555__section-title {
        font-size: 1.8em;
      }

      .page-bl555__about-content {
        flex-direction: column;
      }

      .page-bl555__about-text h3 {
        font-size: 1.5em;
      }

      .page-bl555__about-text p {
        font-size: 0.95em;
      }

      .page-bl555__game-grid {
        grid-template-columns: 1fr;
      }

      .page-bl555__promo-list {
        grid-template-columns: 1fr;
      }

      .page-bl555__promo-item {
        flex-direction: column;
        text-align: center;
        align-items: center;
      }
      .page-bl555__promo-content h3 {
        font-size: 1.2em;
      }
      .page-bl555__promo-icon {
        margin-bottom: 10px;
      }

      .page-bl555__steps-grid {
        grid-template-columns: 1fr;
      }

      .page-bl555__faq-question {
        font-size: 1em;
        padding: 15px;
      }
      .page-bl555__faq-question h3 {
        font-size: 1em;
      }
      .page-bl555__faq-answer {
        padding: 15px 15px;
      }
      .page-bl555__faq-item.active .page-bl555__faq-answer {
        padding: 15px 15px !important;
      }

      /* Image responsiveness with !important */
      .page-bl555__hero-banner,
      .page-bl555__about-image,
      .page-bl555__game-image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
      .page-bl555__about-image-wrapper,
      .page-bl555__game-image-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
      .page-bl555__game-image-wrapper {
        height: 180px; /* Adjust height for mobile game cards */
      }
      /* List item responsiveness */
      .page-bl555__promo-list,
      .page-bl555__steps-grid,
      .page-bl555__game-grid,
      .page-bl555__faq-list {
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
      }
      .page-bl555__promo-item,
      .page-bl555__step-card,
      .page-bl555__game-card,
      .page-bl555__faq-item {
        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;
      }
    }