:root {
      --page-vn58dangnhap-bg-color: #000000;
      --page-vn58dangnhap-text-color: #FFFFFF;
      --page-vn58dangnhap-highlight-color: #FFD700; /* Gold/Yellow */
      --page-vn58dangnhap-accent-color: #FF8C00; /* Dark Orange for buttons/hover */
      --page-vn58dangnhap-border-color: #333333;
      --page-vn58dangnhap-padding-section: 40px 20px;
      --page-vn58dangnhap-padding-item: 20px;
      --page-vn58dangnhap-border-radius: 8px;
    }

    .page-vn58dangnhap {
      background-color: var(--page-vn58dangnhap-bg-color);
      color: var(--page-vn58dangnhap-text-color);
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      padding-bottom: 80px; /* Space for fixed button */
    }

    .page-vn58dangnhap__hero-section {
      position: relative;
      width: 100%;
      overflow: hidden;
      text-align: center;
      padding-top: 120px; /* Space for fixed header */
      box-sizing: border-box;
      background-color: #1a1a1a; /* Slightly lighter black for hero */
    }

    .page-vn58dangnhap__hero-image {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      border-radius: var(--page-vn58dangnhap-border-radius);
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
    }

    .page-vn58dangnhap__hero-content {
      position: relative;
      z-index: 1;
      padding: 20px;
      margin-top: -30px; /* Overlap image slightly */
      background: linear-gradient(to top, var(--page-vn58dangnhap-bg-color) 0%, rgba(0,0,0,0.8) 50%, rgba(0,0,0,0.5) 100%);
      border-radius: var(--page-vn58dangnhap-border-radius);
      box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.5);
    }

    .page-vn58dangnhap__main-heading {
      color: var(--page-vn58dangnhap-highlight-color);
      font-size: 2.5em;
      margin-bottom: 15px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-vn58dangnhap__sub-heading {
      color: var(--page-vn58dangnhap-text-color);
      font-size: 1.2em;
      margin-bottom: 25px;
    }

    .page-vn58dangnhap__cta-button {
      display: inline-block;
      background-color: var(--page-vn58dangnhap-accent-color);
      color: var(--page-vn58dangnhap-text-color);
      padding: 15px 30px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
    }

    .page-vn58dangnhap__cta-button:hover {
      background-color: var(--page-vn58dangnhap-highlight-color);
      transform: translateY(-2px);
      color: #333333;
    }

    .page-vn58dangnhap__section {
      padding: var(--page-vn58dangnhap-padding-section);
      max-width: 1200px;
      margin: 0 auto;
      text-align: center;
    }

    .page-vn58dangnhap__section-title {
      color: var(--page-vn58dangnhap-highlight-color);
      font-size: 2em;
      margin-bottom: 20px;
      text-align: center;
      border-bottom: 2px solid var(--page-vn58dangnhap-border-color);
      padding-bottom: 10px;
    }

    .page-vn58dangnhap__section-text {
      color: var(--page-vn58dangnhap-text-color);
      margin-bottom: 20px;
      text-align: left;
    }

    .page-vn58dangnhap__steps-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .page-vn58dangnhap__step-item {
      background-color: #1a1a1a;
      border: 1px solid var(--page-vn58dangnhap-border-color);
      border-radius: var(--page-vn58dangnhap-border-radius);
      padding: var(--page-vn58dangnhap-padding-item);
      text-align: left;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }

    .page-vn58dangnhap__step-title {
      color: var(--page-vn58dangnhap-highlight-color);
      font-size: 1.3em;
      margin-bottom: 10px;
    }

    .page-vn58dangnhap__step-description {
      color: var(--page-vn58dangnhap-text-color);
    }

    .page-vn58dangnhap__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-vn58dangnhap__game-card {
      background-color: #1a1a1a;
      border: 1px solid var(--page-vn58dangnhap-border-color);
      border-radius: var(--page-vn58dangnhap-border-radius);
      padding: 15px;
      text-align: center;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }

    .page-vn58dangnhap__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.5);
    }

    .page-vn58dangnhap__game-image-wrapper {
      width: 100%;
      max-width: 100%;
      overflow: hidden;
      box-sizing: border-box;
      margin-bottom: 10px;
      border-radius: var(--page-vn58dangnhap-border-radius);
    }

    .page-vn58dangnhap__game-image {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: var(--page-vn58dangnhap-border-radius);
    }

    .page-vn58dangnhap__game-title {
      color: var(--page-vn58dangnhap-highlight-color);
      font-size: 1.1em;
      margin-bottom: 5px;
    }

    .page-vn58dangnhap__game-link {
      color: var(--page-vn58dangnhap-text-color);
      text-decoration: none;
      font-weight: bold;
      display: block;
      margin-top: 10px;
      padding: 8px 15px;
      background-color: var(--page-vn58dangnhap-accent-color);
      border-radius: 20px;
      transition: background-color 0.3s ease;
    }

    .page-vn58dangnhap__game-link:hover {
      background-color: var(--page-vn58dangnhap-highlight-color);
      color: #333333;
    }

    .page-vn58dangnhap__faq-section {
      padding: var(--page-vn58dangnhap-padding-section);
      max-width: 900px;
      margin: 0 auto;
    }

    .page-vn58dangnhap__faq-item {
      background-color: #1a1a1a;
      border: 1px solid var(--page-vn58dangnhap-border-color);
      border-radius: var(--page-vn58dangnhap-border-radius);
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }

    .page-vn58dangnhap__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      user-select: none;
      background-color: #222222;
      color: var(--page-vn58dangnhap-highlight-color);
      font-size: 1.2em;
      font-weight: bold;
      transition: background-color 0.3s ease;
    }

    .page-vn58dangnhap__faq-question h3 {
      margin: 0;
      font-size: 1em; /* To make it relative to parent */
      color: inherit;
      pointer-events: none; /* Prevent h3 from blocking click on parent div */
    }

    .page-vn58dangnhap__faq-question:hover {
      background-color: #333333;
    }

    .page-vn58dangnhap__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      pointer-events: none; /* Prevent toggle icon from blocking click on parent div */
      transition: transform 0.3s ease;
    }

    .page-vn58dangnhap__faq-item.active .page-vn58dangnhap__faq-toggle {
      transform: rotate(45deg); /* Change + to X or a dash */
    }

    .page-vn58dangnhap__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      color: var(--page-vn58dangnhap-text-color);
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
    }

    .page-vn58dangnhap__faq-item.active .page-vn58dangnhap__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 15px !important;
      opacity: 1;
    }

    .page-vn58dangnhap__floating-login-button {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: var(--page-vn58dangnhap-highlight-color);
      color: #000000;
      padding: 15px 25px;
      border-radius: 30px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
      z-index: 1000;
      transition: background-color 0.3s ease, transform 0.2s ease;
      animation: page-vn58dangnhap__pulse 2s infinite;
      white-space: nowrap; /* Prevent text wrapping */
    }

    .page-vn58dangnhap__floating-login-button:hover {
      background-color: var(--page-vn58dangnhap-accent-color);
      color: var(--page-vn58dangnhap-text-color);
      transform: translateX(-50%) scale(1.05);
      animation: none;
    }

    @keyframes page-vn58dangnhap__pulse {
      0% { transform: translateX(-50%) scale(1); }
      50% { transform: translateX(-50%) scale(1.05); }
      100% { transform: translateX(-50%) scale(1); }
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-vn58dangnhap__hero-section {
        padding-top: 100px; /* Adjust for mobile fixed header */
      }

      .page-vn58dangnhap__main-heading {
        font-size: 2em;
      }

      .page-vn58dangnhap__sub-heading {
        font-size: 1em;
      }

      .page-vn58dangnhap__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-vn58dangnhap__section {
        padding: 30px 15px;
      }

      .page-vn58dangnhap__section-title {
        font-size: 1.8em;
      }

      .page-vn58dangnhap__game-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 15px;
      }

      .page-vn58dangnhap__faq-question {
        font-size: 1em;
        padding: 12px 15px;
      }

      .page-vn58dangnhap__faq-answer {
        padding: 15px 15px !important;
      }

      .page-vn58dangnhap__floating-login-button {
        bottom: 15px;
        padding: 12px 20px;
        font-size: 1em;
      }

      .page-vn58dangnhap__game-image-wrapper,
      .page-vn58dangnhap__game-image {
        max-width: 100% !important;
        height: auto !important;
      }
    }

    @media (max-width: 480px) {
      .page-vn58dangnhap__main-heading {
        font-size: 1.8em;
      }
      .page-vn58dangnhap__floating-login-button {
        width: 90%;
        max-width: 300px;
      }
    }