/* Tổng quan */
    .page-vn580 {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color: #000;
      color: #fff;
      line-height: 1.6;
      overflow-x: hidden;
      padding-bottom: 80px; /* Đủ khoảng trống cho nút nổi */
    }

    .page-vn580__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-vn580__section {
      padding: 60px 0;
      text-align: center;
    }

    .page-vn580__heading {
      color: #FFD700;
      font-size: 2.5em;
      margin-bottom: 20px;
      text-transform: uppercase;
      font-weight: bold;
    }

    .page-vn580__subheading {
      color: #fff;
      font-size: 1.8em;
      margin-bottom: 30px;
      font-weight: 600;
    }

    .page-vn580__text {
      font-size: 1.1em;
      color: #e0e0e0;
      margin-bottom: 20px;
    }

    /* Hero Section */
    .page-vn580__hero-section {
      background-color: #000;
      padding-top: 100px; /* Cho khoảng trống an toàn cho header cố định trên di động */
      padding-bottom: 40px;
      text-align: center;
      position: relative;
    }

    .page-vn580__hero-image-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        margin-bottom: 20px;
    }

    .page-vn580__hero-image {
        max-width: 100%;
        height: auto;
        display: block;
        margin: 0 auto;
        border-radius: 10px;
    }

    .page-vn580__hero-title {
      font-size: 2.8em;
      color: #FFD700;
      margin-bottom: 15px;
      line-height: 1.2;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-vn580__hero-description {
      font-size: 1.3em;
      color: #fff;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    }

    .page-vn580__hero-cta {
      display: inline-block;
      background-color: #FFD700;
      color: #000;
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
    }

    .page-vn580__hero-cta:hover {
      background-color: #e6c200;
      transform: translateY(-3px);
    }

    /* Giới Thiệu Section */
    .page-vn580__intro-section {
      background-color: #0d0d0d;
      padding: 50px 0;
    }

    .page-vn580__intro-text {
      max-width: 800px;
      margin: 0 auto 30px auto;
    }

    /* Floating Login Button */
    .page-vn580__floating-button {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: #FF4500; /* Màu cam nổi bật */
      color: #fff;
      padding: 15px 25px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 4px 15px rgba(255, 69, 0, 0.6);
      z-index: 1000;
      transition: background-color 0.3s ease, transform 0.3s ease;
      animation: page-vn580__pulse 2s infinite;
      white-space: nowrap;
    }

    .page-vn580__floating-button:hover {
      background-color: #cc3700;
      transform: translateX(-50%) translateY(-3px);
    }

    @keyframes page-vn580__pulse {
      0% { transform: translateX(-50%) scale(1); }
      50% { transform: translateX(-50%) scale(1.05); }
      100% { transform: translateX(-50%) scale(1); }
    }

    /* Game Categories Section */
    .page-vn580__game-categories {
      background-color: #000;
      padding: 60px 0;
    }

    .page-vn580__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin-top: 40px;
    }

    .page-vn580__game-item {
      background-color: #1a1a1a;
      border-radius: 10px;
      padding: 20px;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
    }

    .page-vn580__game-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(255, 215, 0, 0.2);
    }

    .page-vn580__game-image-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        margin-bottom: 15px;
    }

    .page-vn580__game-image {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      border-radius: 8px;
    }

    .page-vn580__game-title {
      color: #FFD700;
      font-size: 1.2em;
      font-weight: bold;
      margin-top: 10px;
    }

    /* Promotions Section */
    .page-vn580__promotions-section {
      background-color: #0d0d0d;
      padding: 60px 0;
    }

    .page-vn580__promo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-vn580__promo-card {
      background-color: #1a1a1a;
      border-radius: 10px;
      padding: 25px;
      text-align: left;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-vn580__promo-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(255, 215, 0, 0.2);
    }

    .page-vn580__promo-title {
      color: #FFD700;
      font-size: 1.5em;
      margin-bottom: 15px;
      font-weight: bold;
    }

    .page-vn580__promo-description {
      color: #e0e0e0;
      margin-bottom: 20px;
    }

    .page-vn580__promo-cta {
      display: inline-block;
      background-color: #FF4500;
      color: #fff;
      padding: 10px 20px;
      border-radius: 25px;
      text-decoration: none;
      font-weight: bold;
      font-size: 0.95em;
      transition: background-color 0.3s ease;
    }

    .page-vn580__promo-cta:hover {
      background-color: #cc3700;
    }

    /* How-to Guide Section */
    .page-vn580__guide-section {
      background-color: #000;
      padding: 60px 0;
    }

    .page-vn580__guide-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-vn580__guide-item {
      background-color: #1a1a1a;
      border-radius: 10px;
      padding: 25px;
      text-align: left;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    .page-vn580__guide-title {
      color: #FFD700;
      font-size: 1.4em;
      margin-bottom: 15px;
      font-weight: bold;
    }

    .page-vn580__guide-text {
      color: #e0e0e0;
      margin-bottom: 15px;
    }

    .page-vn580__guide-image-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        margin-bottom: 15px;
    }

    .page-vn580__guide-image {
        max-width: 100%;
        height: auto;
        display: block;
        margin: 0 auto;
        border-radius: 8px;
    }

    /* Why Choose Section */
    .page-vn580__why-choose-section {
      background-color: #0d0d0d;
      padding: 60px 0;
    }

    .page-vn580__usp-list {
      list-style: none;
      padding: 0;
      margin-top: 40px;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
    }

    .page-vn580__usp-item {
      background-color: #1a1a1a;
      border-left: 5px solid #FFD700;
      padding: 20px;
      border-radius: 8px;
      text-align: left;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    .page-vn580__usp-item strong {
      color: #FFD700;
      font-size: 1.2em;
      display: block;
      margin-bottom: 10px;
    }

    .page-vn580__usp-item p {
      color: #e0e0e0;
    }

    /* FAQ Section */
    .page-vn580__faq-section {
      background-color: #000;
      padding: 60px 0;
    }

    .page-vn580__faq-list {
      max-width: 800px;
      margin: 40px auto 0 auto;
      text-align: left;
    }

    .page-vn580__faq-item {
      background-color: #1a1a1a;
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }

    .page-vn580__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: #2a2a2a;
      color: #FFD700;
      cursor: pointer;
      font-weight: bold;
      font-size: 1.1em;
      border-bottom: 1px solid #333;
      user-select: none;
      transition: background-color 0.3s ease;
    }

    .page-vn580__faq-question:hover {
      background-color: #3a3a3a;
    }

    .page-vn580__faq-question h3 {
      margin: 0;
      color: inherit;
      font-size: inherit;
      flex-grow: 1;
      pointer-events: none; /* Ngăn chặn h3 chặn sự kiện click */
    }

    .page-vn580__faq-toggle {
      font-size: 1.5em;
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Ngăn chặn toggle chặn sự kiện click */
    }

    .page-vn580__faq-item.active .page-vn580__faq-toggle {
      transform: rotate(45deg);
    }

    .page-vn580__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      color: #e0e0e0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      background-color: #1a1a1a;
    }

    .page-vn580__faq-item.active .page-vn580__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa nội dung */
      padding: 20px !important;
      opacity: 1;
    }

    /* Responsive */
    @media (max-width: 768px) {
      .page-vn580__hero-section {
        padding-top: 100px; /* Điều chỉnh cho header di động */
      }

      .page-vn580__hero-title {
        font-size: 2.2em;
      }

      .page-vn580__hero-description {
        font-size: 1.1em;
      }

      .page-vn580__hero-cta {
        padding: 12px 25px;
        font-size: 1.1em;
      }

      .page-vn580__heading {
        font-size: 2em;
      }

      .page-vn580__subheading {
        font-size: 1.5em;
      }

      .page-vn580__text {
        font-size: 1em;
      }

      .page-vn580__game-grid,
      .page-vn580__promo-grid,
      .page-vn580__guide-grid,
      .page-vn580__usp-list {
        grid-template-columns: 1fr;
      }

      .page-vn580__game-item {
        padding: 15px;
      }

      .page-vn580__game-title {
        font-size: 1.1em;
      }

      .page-vn580__promo-card,
      .page-vn580__guide-item,
      .page-vn580__usp-item {
        padding: 20px;
      }

      .page-vn580__promo-title {
        font-size: 1.3em;
      }

      .page-vn580__guide-title {
        font-size: 1.2em;
      }

      .page-vn580__faq-question {
        font-size: 1em;
        padding: 12px 15px;
      }

      .page-vn580__faq-answer {
        padding: 0 15px;
      }

      .page-vn580__faq-item.active .page-vn580__faq-answer {
        padding: 15px !important;
      }

      /* Image responsive adjustments for mobile */
      .page-vn580__hero-image,
      .page-vn580__game-image,
      .page-vn580__guide-image {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-vn580__hero-image-wrapper,
      .page-vn580__game-image-wrapper,
      .page-vn580__guide-image-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }

    @media (min-width: 769px) {
      .page-vn580__hero-section {
        padding-top: 150px; /* Điều chỉnh cho header desktop */
      }
    }