/* Tổng quan và biến */
    :root {
      --page-vn583__bg-color: #000000;
      --page-vn583__text-color: #ffffff;
      --page-vn583__highlight-color: #ffd700; /* Vàng kim */
      --page-vn583__accent-color: #ff4500; /* Cam đỏ */
      --page-vn583__border-color: #333333;
      --page-vn583__button-bg: #ffd700;
      --page-vn583__button-text: #000000;
      --page-vn583__button-hover-bg: #e6c200;
    }

    .page-vn583 {
      font-family: 'Arial', sans-serif;
      background-color: var(--page-vn583__bg-color);
      color: var(--page-vn583__text-color);
      line-height: 1.6;
      overflow-x: hidden;
    }

    .page-vn583__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .page-vn583__section {
      padding: 60px 0;
      text-align: center;
    }

    .page-vn583__section-title {
      font-size: 2.8em;
      color: var(--page-vn583__highlight-color);
      margin-bottom: 30px;
      position: relative;
      padding-bottom: 15px;
      text-transform: uppercase;
    }

    .page-vn583__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-vn583__highlight-color);
      border-radius: 2px;
    }

    .page-vn583__text-highlight {
      color: var(--page-vn583__highlight-color);
    }

    .page-vn583__cta-button {
      display: inline-block;
      background-color: var(--page-vn583__button-bg);
      color: var(--page-vn583__button-text);
      padding: 15px 30px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-vn583__cta-button:hover {
      background-color: var(--page-vn583__button-hover-bg);
      transform: translateY(-2px);
    }

    /* Hero Section */
    .page-vn583__hero-section {
      position: relative;
      background-color: var(--page-vn583__bg-color);
      padding-top: 140px; /* An toàn cho header cố định */
      min-height: 500px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      text-align: center;
      overflow: hidden;
    }

    .page-vn583__hero-image {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto 30px auto; /* Centered, with space below */
      border-radius: 10px;
      box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    }

    .page-vn583__hero-content {
      position: relative;
      z-index: 10;
      padding: 20px;
      max-width: 900px;
      margin: 0 auto;
    }

    .page-vn583__hero-title {
      font-size: 3.5em;
      color: var(--page-vn583__highlight-color);
      margin-bottom: 20px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-vn583__hero-description {
      font-size: 1.4em;
      color: var(--page-vn583__text-color);
      margin-bottom: 40px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    /* Floating Login Button */
    .page-vn583__floating-button {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: var(--page-vn583__accent-color);
      color: var(--page-vn583__text-color);
      padding: 15px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.2em;
      z-index: 1000;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
      animation: page-vn583__pulse 2s infinite;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .page-vn583__floating-button:hover {
      background-color: #e63900;
      animation: none;
    }

    @keyframes page-vn583__pulse {
      0% { transform: translateX(-50%) scale(1); box-shadow: 0 0 0 0 rgba(255, 69, 0, 0.7); }
      70% { transform: translateX(-50%) scale(1.05); box-shadow: 0 0 0 20px rgba(255, 69, 0, 0); }
      100% { transform: translateX(-50%) scale(1); box-shadow: 0 0 0 0 rgba(255, 69, 0, 0); }
    }

    /* Giới Thiệu Section */
    .page-vn583__intro-content {
      text-align: left;
      font-size: 1.1em;
      max-width: 900px;
      margin: 0 auto;
      color: #ccc;
    }

    .page-vn583__intro-content p {
      margin-bottom: 20px;
    }

    /* Game Grid Section */
    .page-vn583__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-vn583__game-card {
      background-color: #1a1a1a;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      padding-bottom: 20px;
      text-align: center;
    }

    .page-vn583__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
    }

    .page-vn583__game-image {
      width: 100%;
      height: 200px; /* Fixed height for consistent card appearance */
      object-fit: cover;
      display: block;
      border-bottom: 3px solid var(--page-vn583__highlight-color);
    }

    .page-vn583__game-title {
      font-size: 1.5em;
      color: var(--page-vn583__highlight-color);
      margin: 20px 10px 10px 10px;
      font-weight: bold;
    }

    .page-vn583__game-description {
      font-size: 0.95em;
      color: #bbb;
      padding: 0 15px;
      margin-bottom: 20px;
    }

    /* Ưu Đãi Section */
    .page-vn583__promo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-vn583__promo-card {
      background-color: #1a1a1a;
      border-radius: 10px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
      padding: 30px;
      text-align: center;
      border: 2px solid var(--page-vn583__border-color);
      transition: border-color 0.3s ease;
    }

    .page-vn583__promo-card:hover {
      border-color: var(--page-vn583__highlight-color);
    }

    .page-vn583__promo-title {
      font-size: 1.8em;
      color: var(--page-vn583__highlight-color);
      margin-bottom: 15px;
    }

    .page-vn583__promo-description {
      font-size: 1.1em;
      color: #ccc;
      margin-bottom: 25px;
    }

    /* Hướng Dẫn Section */
    .page-vn583__guide-list {
      list-style: none;
      padding: 0;
      max-width: 800px;
      margin: 40px auto 0 auto;
      text-align: left;
    }

    .page-vn583__guide-step {
      background-color: #1a1a1a;
      border: 1px solid var(--page-vn583__border-color);
      border-radius: 8px;
      padding: 25px;
      margin-bottom: 20px;
      display: flex;
      align-items: flex-start;
      gap: 20px;
      box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
    }

    .page-vn583__step-number {
      background-color: var(--page-vn583__highlight-color);
      color: var(--page-vn583__bg-color);
      width: 40px;
      height: 40px;
      border-radius: 50%;
      display: flex;
      justify-content: center;
      align-items: center;
      font-weight: bold;
      font-size: 1.4em;
      flex-shrink: 0;
    }

    .page-vn583__step-content h3 {
      font-size: 1.5em;
      color: var(--page-vn583__highlight-color);
      margin-top: 0;
      margin-bottom: 10px;
    }

    .page-vn583__step-content p {
      color: #ccc;
      margin: 0;
    }

    /* FAQ Section */
    .page-vn583__faq-section {
      padding: 60px 0;
      background-color: var(--page-vn583__bg-color);
    }

    .page-vn583__faq-container {
      max-width: 900px;
      margin: 40px auto 0 auto;
    }

    .page-vn583__faq-item {
      background-color: #1a1a1a;
      border: 1px solid var(--page-vn583__border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
    }

    .page-vn583__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      cursor: pointer;
      background-color: #222;
      color: var(--page-vn583__text-color);
      font-size: 1.2em;
      font-weight: bold;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-vn583__faq-question:hover {
      background-color: #333;
    }

    .page-vn583__faq-question h3 {
      margin: 0;
      color: var(--page-vn583__highlight-color);
      pointer-events: none; /* Ngăn chặn sự kiện click trên H3 */
      flex-grow: 1;
      text-align: left;
    }

    .page-vn583__faq-toggle {
      font-size: 1.8em;
      line-height: 1;
      color: var(--page-vn583__highlight-color);
      pointer-events: none; /* Ngăn chặn sự kiện click trên toggle */
      transition: transform 0.3s ease;
    }

    .page-vn583__faq-item.active .page-vn583__faq-toggle {
      transform: rotate(45deg); /* Xoay dấu + thành X hoặc dấu - */
    }

    .page-vn583__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      background-color: #1a1a1a;
      color: #ccc;
      font-size: 1.1em;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      text-align: left;
    }

    .page-vn583__faq-item.active .page-vn583__faq-answer {
      max-height: 2000px !important; /* Đủ lớn để chứa mọi nội dung */
      padding: 20px 25px !important;
      opacity: 1;
    }

    /* Why Choose Section */
    .page-vn583__advantages-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-vn583__advantage-item {
      background-color: #1a1a1a;
      border-radius: 10px;
      padding: 30px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
      border: 1px solid var(--page-vn583__border-color);
      transition: transform 0.3s ease;
    }

    .page-vn583__advantage-item:hover {
      transform: translateY(-5px);
    }

    .page-vn583__advantage-icon {
      width: 60px;
      height: 60px;
      margin-bottom: 20px;
      color: var(--page-vn583__highlight-color);
      font-size: 3em;
      line-height: 1;
      display: inline-block;
    }

    .page-vn583__advantage-title {
      font-size: 1.6em;
      color: var(--page-vn583__highlight-color);
      margin-bottom: 10px;
    }

    .page-vn583__advantage-description {
      font-size: 1em;
      color: #bbb;
    }

    /* General image styling */
    .page-vn583 img {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: 8px;
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .page-vn583__hero-title {
        font-size: 3em;
      }
      .page-vn583__hero-description {
        font-size: 1.2em;
      }
      .page-vn583__section-title {
        font-size: 2.2em;
      }
    }

    @media (max-width: 768px) {
      .page-vn583__hero-section {
        padding-top: 100px; /* An toàn cho header cố định trên mobile */
        min-height: 400px;
      }
      .page-vn583__hero-title {
        font-size: 2.5em;
      }
      .page-vn583__hero-description {
        font-size: 1em;
      }
      .page-vn583__section {
        padding: 40px 0;
      }
      .page-vn583__section-title {
        font-size: 2em;
        margin-bottom: 20px;
      }
      .page-vn583__game-grid,
      .page-vn583__promo-grid,
      .page-vn583__advantages-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .page-vn583__game-card {
        padding-bottom: 15px;
      }
      .page-vn583__game-image {
        height: 180px;
      }
      .page-vn583__game-title {
        font-size: 1.3em;
        margin-top: 15px;
      }
      .page-vn583__floating-button {
        padding: 12px 20px;
        font-size: 1em;
      }
      .page-vn583__guide-step {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 20px;
      }
      .page-vn583__step-number {
        margin-bottom: 15px;
      }
      .page-vn583__faq-question {
        font-size: 1.1em;
        padding: 15px 20px;
      }
      .page-vn583__faq-question h3 {
        font-size: 1.1em;
      }
      .page-vn583__faq-answer {
        padding: 15px 20px;
        font-size: 1em;
      }
      .page-vn583 img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-vn583__game-card, .page-vn583__promo-card, .page-vn583__advantage-item {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
    }

    @media (max-width: 480px) {
      .page-vn583__hero-title {
        font-size: 2em;
      }
      .page-vn583__hero-description {
        font-size: 0.9em;
      }
      .page-vn583__section-title {
        font-size: 1.8em;
      }
      .page-vn583__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }
    }