:root {
      --primary-color: #007bff;
      --secondary-color: #6c757d;
      --accent-color: #ffc107;
      --background-dark: #1a1a2e;
      --text-light: #f8f9fa;
      --text-dark: #343a40;
      --card-background: #2a2a4a;
      --border-color: #444466;
      --button-hover-bg: #0056b3;
      --faq-question-bg: #3a3a5a;
      --faq-answer-bg: #2a2a4a;
    }

    /* Base styles for the page content wrapper */
    .page-12bet-dang-nhap {
      font-family: 'Arial', sans-serif;
      color: var(--text-light);
      background-color: var(--background-dark);
      line-height: 1.6;
      padding-bottom: 80px; /* Space for floating buttons */
      padding-top: 10px; /* Small top padding, assuming body handles main header offset */
    }

    /* Hero Section */
    .page-12bet-dang-nhap__hero-section {
      text-align: center;
      padding: 60px 20px;
      background: linear-gradient(135deg, var(--background-dark) 0%, #0f0f20 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

    .page-12bet-dang-nhap__hero-image {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.3;
      z-index: 0;
    }

    .page-12bet-dang-nhap__hero-content {
      position: relative;
      z-index: 1;
      max-width: 900px;
      margin: 0 auto;
    }

    .page-12bet-dang-nhap__hero-title {
      font-size: 2.8em;
      color: var(--accent-color);
      margin-bottom: 20px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    }

    .page-12bet-dang-nhap__hero-subtitle {
      font-size: 1.3em;
      color: var(--text-light);
      margin-bottom: 30px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-12bet-dang-nhap__cta-button {
      background-color: var(--primary-color);
      color: white;
      padding: 15px 30px;
      border: none;
      border-radius: 8px;
      font-size: 1.1em;
      cursor: pointer;
      transition: background-color 0.3s ease, transform 0.2s ease;
      display: inline-block;
      text-decoration: none;
    }

    .page-12bet-dang-nhap__cta-button:hover {
      background-color: var(--button-hover-bg);
      transform: translateY(-2px);
    }

    /* Floating Buttons */
    .page-12bet-dang-nhap__floating-buttons {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      display: flex;
      justify-content: space-around;
      padding: 10px 15px;
      background-color: rgba(0, 0, 0, 0.8);
      box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
      z-index: 1000;
      gap: 10px;
      box-sizing: border-box;
    }

    .page-12bet-dang-nhap__floating-button {
      flex: 1;
      background-color: var(--primary-color);
      color: white;
      padding: 12px 10px;
      border: none;
      border-radius: 6px;
      font-size: 1.0em;
      text-align: center;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.2s ease;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      box-sizing: border-box;
    }

    .page-12bet-dang-nhap__floating-button:hover {
      background-color: var(--button-hover-bg);
      transform: translateY(-2px);
    }

    .page-12bet-dang-nhap__floating-button--accent {
      background-color: var(--accent-color);
      color: var(--text-dark);
    }

    .page-12bet-dang-nhap__floating-button--accent:hover {
      background-color: #e0a800;
    }

    /* Content Sections */
    .page-12bet-dang-nhap__section {
      padding: 40px 20px;
      max-width: 1200px;
      margin: 0 auto;
      border-bottom: 1px solid var(--border-color);
    }

    .page-12bet-dang-nhap__section-title {
      font-size: 2.2em;
      color: var(--primary-color);
      text-align: center;
      margin-bottom: 30px;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
    }

    .page-12bet-dang-nhap__section-description {
      text-align: center;
      font-size: 1.1em;
      margin-bottom: 40px;
      color: var(--secondary-color);
    }

    /* How-To Section */
    .page-12bet-dang-nhap__steps-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-12bet-dang-nhap__step-item {
      background-color: var(--card-background);
      border-radius: 10px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-start;
      height: 100%;
      box-sizing: border-box;
    }

    .page-12bet-dang-nhap__step-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    }

    .page-12bet-dang-nhap__step-number {
      font-size: 2.5em;
      color: var(--accent-color);
      margin-bottom: 15px;
      font-weight: bold;
    }

    .page-12bet-dang-nhap__step-title {
      font-size: 1.4em;
      color: var(--primary-color);
      margin-bottom: 15px;
      pointer-events: none; /* Prevent h3 from blocking click events if it were a link */
    }

    .page-12bet-dang-nhap__step-description {
      font-size: 1em;
      color: var(--text-light);
    }

    /* Game Categories / Providers / Payments */
    .page-12bet-dang-nhap__cards-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 25px;
      margin-top: 40px;
    }

    .page-12bet-dang-nhap__card-item {
      background-color: var(--card-background);
      border-radius: 10px;
      padding: 20px;
      text-align: center;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      height: 100%;
      box-sizing: border-box;
    }

    .page-12bet-dang-nhap__card-item:hover {
      transform: translateY(-3px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
    }

    .page-12bet-dang-nhap__card-image {
      width: 100%;
      max-width: 300px;
      height: auto;
      border-radius: 8px;
      margin-bottom: 15px;
      object-fit: cover;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    .page-12bet-dang-nhap__card-title {
      font-size: 1.3em;
      color: var(--primary-color);
      margin-bottom: 10px;
      pointer-events: none;
    }

    .page-12bet-dang-nhap__card-description {
      font-size: 0.95em;
      color: var(--secondary-color);
    }

    /* Promotions Section */
    .page-12bet-dang-nhap__promotions-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-12bet-dang-nhap__promo-card {
      background-color: var(--card-background);
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      overflow: hidden;
      text-align: left;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      height: 100%;
      box-sizing: border-box;
    }

    .page-12bet-dang-nhap__promo-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    }

    .page-12bet-dang-nhap__promo-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }

    .page-12bet-dang-nhap__promo-content {
      padding: 20px;
    }

    .page-12bet-dang-nhap__promo-title {
      font-size: 1.5em;
      color: var(--accent-color);
      margin-bottom: 10px;
      pointer-events: none;
    }

    .page-12bet-dang-nhap__promo-description {
      font-size: 1em;
      color: var(--text-light);
      margin-bottom: 15px;
    }

    .page-12bet-dang-nhap__promo-button {
      background-color: var(--primary-color);
      color: white;
      padding: 10px 20px;
      border: none;
      border-radius: 5px;
      font-size: 0.95em;
      cursor: pointer;
      transition: background-color 0.3s ease;
      display: inline-block;
      text-decoration: none;
    }

    .page-12bet-dang-nhap__promo-button:hover {
      background-color: var(--button-hover-bg);
    }

    /* FAQ Section */
    .page-12bet-dang-nhap__faq-container {
      max-width: 900px;
      margin: 0 auto;
      padding-top: 20px;
    }

    .page-12bet-dang-nhap__faq-item {
      background-color: var(--faq-question-bg);
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    }

    .page-12bet-dang-nhap__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      font-size: 1.1em;
      color: var(--text-light);
      background-color: var(--faq-question-bg);
      border-bottom: 1px solid var(--border-color);
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-12bet-dang-nhap__faq-question:hover {
      background-color: #4a4a6a;
    }

    .page-12bet-dang-nhap__faq-question h3 {
      margin: 0;
      color: var(--primary-color);
      flex-grow: 1;
      text-align: left;
      pointer-events: none; /* Prevent h3 from blocking click events */
    }

    .page-12bet-dang-nhap__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: var(--accent-color);
      margin-left: 15px;
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click events */
    }

    .page-12bet-dang-nhap__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      background-color: var(--faq-answer-bg);
      color: var(--secondary-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-12bet-dang-nhap__faq-item.active .page-12bet-dang-nhap__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px 20px !important;
      opacity: 1;
    }

    .page-12bet-dang-nhap__faq-item.active .page-12bet-dang-nhap__faq-toggle {
      transform: rotate(45deg); /* Changes + to X or - */
    }

    /* General Image Styling */
    .page-12bet-dang-nhap img {
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto;
      box-sizing: border-box;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-12bet-dang-nhap__hero-title {
        font-size: 2em;
      }

      .page-12bet-dang-nhap__hero-subtitle {
        font-size: 1em;
      }

      .page-12bet-dang-nhap__section {
        padding: 30px 15px;
      }

      .page-12bet-dang-nhap__section-title {
        font-size: 1.8em;
      }

      .page-12bet-dang-nhap__section-description {
        font-size: 0.95em;
      }

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

      .page-12bet-dang-nhap__steps-grid,
      .page-12bet-dang-nhap__cards-grid,
      .page-12bet-dang-nhap__promotions-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }

      .page-12bet-dang-nhap__step-item,
      .page-12bet-dang-nhap__card-item,
      .page-12bet-dang-nhap__promo-card {
        padding: 20px;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      .page-12bet-dang-nhap__promo-image {
        height: 180px;
      }

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

      .page-12bet-dang-nhap__faq-question h3 {
        font-size: 1.1em;
      }

      .page-12bet-dang-nhap__faq-answer {
        padding: 0 15px;
      }

      .page-12bet-dang-nhap__faq-item.active .page-12bet-dang-nhap__faq-answer {
        padding: 15px 15px !important;
      }

      .page-12bet-dang-nhap__floating-buttons {
        padding: 8px 10px;
      }

      .page-12bet-dang-nhap__floating-button {
        padding: 10px 8px;
        font-size: 0.9em;
      }

      /* Ensure list items wrap and don't overflow */
      .page-12bet-dang-nhap ul,
      .page-12bet-dang-nhap ol {
        padding: 0 !important;
        margin: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
      }

      .page-12bet-dang-nhap li {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
    }