:root {
      --primary-color: #e44d26; /* Màu cam đỏ đặc trưng của 12bet */
      --secondary-color: #333;
      --text-color: #333;
      --light-text-color: #f8f8f8;
      --background-light: #f4f4f4;
      --background-dark: #222;
      --accent-color: #007bff;
      --border-color: #ddd;
      --shadow-color: rgba(0, 0, 0, 0.1);
      --padding-section: 40px 20px;
      --border-radius: 8px;
    }

    body {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--text-color);
      background-color: var(--background-light);
      margin: 0;
      padding: 0;
    }

    .page-12bet-download-for-android {
      max-width: 1200px;
      margin: 0 auto;
      background-color: #fff;
      box-shadow: 0 0 15px var(--shadow-color);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    .page-12bet-download-for-android__hero-section {
      position: relative;
      color: var(--light-text-color);
      text-align: center;
      padding: 10px 20px 60px; /* Adjusted for header offset */
      background-color: var(--secondary-color);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      min-height: 400px; /* Ensure visibility for hero content */
    }

    .page-12bet-download-for-android__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: brightness(0.5); /* Giảm độ sáng để chữ dễ đọc */
      z-index: 0;
    }

    .page-12bet-download-for-android__hero-content {
      position: relative;
      z-index: 1;
      max-width: 800px;
    }

    .page-12bet-download-for-android__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: #fff;
      font-weight: bold;
    }

    .page-12bet-download-for-android__hero-description {
      font-size: 1.2em;
      margin-bottom: 30px;
      color: #eee;
    }

    .page-12bet-download-for-android__download-button {
      display: inline-block;
      background-color: var(--primary-color);
      color: #fff;
      padding: 15px 30px;
      border-radius: var(--border-radius);
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-12bet-download-for-android__download-button:hover {
      background-color: #d14220;
    }

    .page-12bet-download-for-android__section {
      padding: var(--padding-section);
      margin-bottom: 20px;
      background-color: #fff;
      border-bottom: 1px solid var(--border-color);
    }

    .page-12bet-download-for-android__section-title {
      font-size: 2em;
      color: var(--primary-color);
      text-align: center;
      margin-bottom: 30px;
      font-weight: bold;
    }

    .page-12bet-download-for-android__content-wrapper {
      max-width: 900px;
      margin: 0 auto;
    }

    .page-12bet-download-for-android__text-block {
      margin-bottom: 20px;
      font-size: 1.05em;
      line-height: 1.7;
      color: var(--secondary-color);
    }

    .page-12bet-download-for-android__image-container {
      text-align: center;
      margin: 30px 0;
      padding: 0 10px;
    }

    .page-12bet-download-for-android__image {
      max-width: 100%;
      height: auto;
      border-radius: var(--border-radius);
      box-shadow: 0 4px 10px var(--shadow-color);
      object-fit: cover;
    }

    .page-12bet-download-for-android__steps-list {
      list-style: none;
      padding: 0;
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      justify-content: center;
      margin: 0;
    }

    .page-12bet-download-for-android__step-item {
      background-color: var(--background-light);
      padding: 25px;
      border-radius: var(--border-radius);
      box-shadow: 0 2px 8px var(--shadow-color);
      flex: 1;
      min-width: 280px;
      max-width: 380px;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      box-sizing: border-box; /* Crucial for mobile responsiveness */
      border: 1px solid var(--border-color);
    }

    .page-12bet-download-for-android__step-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
    }

    .page-12bet-download-for-android__step-number {
      font-size: 2.5em;
      color: var(--primary-color);
      font-weight: bold;
      margin-bottom: 10px;
    }

    .page-12bet-download-for-android__step-title {
      font-size: 1.4em;
      color: var(--secondary-color);
      margin-bottom: 15px;
    }

    .page-12bet-download-for-android__step-description {
      font-size: 1em;
      color: var(--text-color);
    }

    .page-12bet-download-for-android__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-12bet-download-for-android__feature-card {
      background-color: var(--background-light);
      padding: 25px;
      border-radius: var(--border-radius);
      box-shadow: 0 2px 8px var(--shadow-color);
      text-align: center;
      box-sizing: border-box; /* Crucial for mobile responsiveness */
      border: 1px solid var(--border-color);
    }

    .page-12bet-download-for-android__feature-icon {
      margin-bottom: 15px;
    }

    .page-12bet-download-for-android__feature-icon img {
      width: 80px; /* Ensure minimum size */
      height: 80px;
      object-fit: contain;
      max-width: 100%;
      height: auto;
    }

    .page-12bet-download-for-android__feature-title {
      font-size: 1.3em;
      color: var(--primary-color);
      margin-bottom: 10px;
    }

    .page-12bet-download-for-android__feature-description {
      font-size: 0.95em;
      color: var(--text-color);
    }

    .page-12bet-download-for-android__game-providers-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      margin-top: 30px;
      list-style: none;
      padding: 0;
    }

    .page-12bet-download-for-android__provider-item {
      background-color: var(--background-light);
      padding: 15px 25px;
      border-radius: var(--border-radius);
      box-shadow: 0 2px 5px var(--shadow-color);
      font-weight: bold;
      color: var(--secondary-color);
      border: 1px solid var(--border-color);
      box-sizing: border-box; /* Crucial for mobile responsiveness */
    }

    .page-12bet-download-for-android__payment-methods {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      margin-top: 30px;
      list-style: none;
      padding: 0;
    }

    .page-12bet-download-for-android__payment-item {
      background-color: var(--background-light);
      padding: 15px 25px;
      border-radius: var(--border-radius);
      box-shadow: 0 2px 5px var(--shadow-color);
      font-weight: bold;
      color: var(--secondary-color);
      border: 1px solid var(--border-color);
      box-sizing: border-box; /* Crucial for mobile responsiveness */
    }

    .page-12bet-download-for-android__faq-section {
      padding: var(--padding-section);
      background-color: var(--background-light);
      border-top: 1px solid var(--border-color);
    }

    .page-12bet-download-for-android__faq-item {
      background-color: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--border-radius);
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 5px var(--shadow-color);
    }

    .page-12bet-download-for-android__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      background-color: #f9f9f9;
      color: var(--secondary-color);
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease;
    }

    .page-12bet-download-for-android__faq-question:hover {
      background-color: #f0f0f0;
    }

    .page-12bet-download-for-android__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: var(--secondary-color);
      pointer-events: none; /* Prevent h3 from blocking click */
    }

    .page-12bet-download-for-android__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: var(--primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click */
      line-height: 1; /* Ensure consistent height */
    }

    .page-12bet-download-for-android__faq-item.active .page-12bet-download-for-android__faq-toggle {
      transform: rotate(45deg); /* Change '+' to 'x' visually */
    }
    
    .page-12bet-download-for-android__faq-item.active .page-12bet-download-for-android__faq-toggle::before {
        content: "−"; /* Change to minus sign */
        transform: rotate(0deg); /* Reset rotation */
    }
    
    .page-12bet-download-for-android__faq-item .page-12bet-download-for-android__faq-toggle::before {
        content: "+"; /* Default to plus sign */
    }


    .page-12bet-download-for-android__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      color: var(--text-color);
    }

    .page-12bet-download-for-android__faq-item.active .page-12bet-download-for-android__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px !important;
      opacity: 1;
    }

    .page-12bet-download-for-android__promo-banner {
      background-color: var(--primary-color);
      color: var(--light-text-color);
      padding: 30px 20px;
      text-align: center;
      margin-top: 20px;
      border-radius: var(--border-radius);
    }

    .page-12bet-download-for-android__promo-title {
      font-size: 2em;
      margin-bottom: 15px;
      font-weight: bold;
    }

    .page-12bet-download-for-android__promo-description {
      font-size: 1.1em;
      margin-bottom: 25px;
    }

    .page-12bet-download-for-android__promo-button {
      display: inline-block;
      background-color: #fff;
      color: var(--primary-color);
      padding: 12px 25px;
      border-radius: var(--border-radius);
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, color 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-12bet-download-for-android__promo-button:hover {
      background-color: #eee;
      color: #c0391a;
    }


    /* Mobile Responsiveness */
    @media (max-width: 768px) {
      .page-12bet-download-for-android__hero-title {
        font-size: 2em;
      }

      .page-12bet-download-for-android__hero-description {
        font-size: 1em;
      }

      .page-12bet-download-for-android__download-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-12bet-download-for-android__section {
        padding: 30px 15px;
      }

      .page-12bet-download-for-android__section-title {
        font-size: 1.8em;
      }

      .page-12bet-download-for-android__steps-list,
      .page-12bet-download-for-android__features-grid,
      .page-12bet-download-for-android__game-providers-list,
      .page-12bet-download-for-android__payment-methods {
        flex-direction: column;
        gap: 15px;
      }

      .page-12bet-download-for-android__step-item,
      .page-12bet-download-for-android__feature-card,
      .page-12bet-download-for-android__provider-item,
      .page-12bet-download-for-android__payment-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 20px 15px !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-12bet-download-for-android__steps-list,
      .page-12bet-download-for-android__features-grid,
      .page-12bet-download-for-android__game-providers-list,
      .page-12bet-download-for-android__payment-methods {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      .page-12bet-download-for-android__image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }

      .page-12bet-download-for-android__image-container {
        padding: 0;
      }

      .page-12bet-download-for-android__faq-question {
        font-size: 1em;
        padding: 12px 15px;
      }

      .page-12bet-download-for-android__faq-question h3 {
        font-size: 1em;
      }

      .page-12bet-download-for-android__faq-answer {
        padding: 0 15px;
      }

      .page-12bet-download-for-android__faq-item.active .page-12bet-download-for-android__faq-answer {
        padding: 15px !important;
      }

      .page-12bet-download-for-android__promo-title {
        font-size: 1.8em;
      }

      .page-12bet-download-for-android__promo-description {
        font-size: 1em;
      }
    }