:root {
      --page-3wib-primary-color: #e74c3c; /* Đỏ rực */
      --page-3wib-secondary-color: #f39c12; /* Cam */
      --page-3wib-accent-color: #2ecc71; /* Xanh lá */
      --page-3wib-text-color: #ecf0f1; /* Trắng xám */
      --page-3wib-dark-bg: #2c3e50; /* Xanh đen */
      --page-3wib-light-bg: #34495e; /* Xanh đậm */
      --page-3wib-button-hover: #c0392b; /* Đỏ sẫm */
      --page-3wib-border-radius: 8px;
      --page-3wib-transition: all 0.3s ease;
    }

    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color: var(--page-3wib-dark-bg);
      color: var(--page-3wib-text-color);
      line-height: 1.6;
      margin: 0;
      padding: 0;
    }

    .page-3wib {
      max-width: 100%;
      margin: 0 auto;
      overflow-x: hidden;
      padding-top: 10px; /* Small top padding, relies on shared.css for header offset */
    }

    .page-3wib__hero-section {
      position: relative;
      width: 100%;
      height: 60vh; /* Adjust for mobile focus */
      min-height: 300px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      overflow: hidden;
      background-color: var(--page-3wib-light-bg);
      padding: 20px;
      box-sizing: border-box;
    }

    .page-3wib__hero-image {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 1;
      opacity: 0.6;
    }

    .page-3wib__hero-content {
      position: relative;
      z-index: 2;
      color: #fff;
      padding: 20px;
      background: rgba(0, 0, 0, 0.4);
      border-radius: var(--page-3wib-border-radius);
      max-width: 90%;
    }

    .page-3wib__hero-title {
      font-size: 2.5em;
      margin-bottom: 10px;
      color: var(--page-3wib-primary-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-3wib__hero-subtitle {
      font-size: 1.2em;
      margin-bottom: 20px;
      font-weight: 300;
    }

    .page-3wib__floating-buttons {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 1000;
      display: flex;
      gap: 15px;
    }

    .page-3wib__button {
      display: inline-block;
      padding: 12px 25px;
      border-radius: 50px;
      font-weight: bold;
      text-decoration: none;
      transition: var(--page-3wib-transition);
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      white-space: nowrap;
      color: #fff;
    }

    .page-3wib__button--register {
      background-color: var(--page-3wib-primary-color);
    }

    .page-3wib__button--register:hover {
      background-color: var(--page-3wib-button-hover);
      transform: translateY(-2px);
    }

    .page-3wib__button--login {
      background-color: var(--page-3wib-secondary-color);
    }

    .page-3wib__button--login:hover {
      background-color: #e67e22; /* Darker orange */
      transform: translateY(-2px);
    }

    .page-3wib__section {
      padding: 40px 20px;
      text-align: center;
      background-color: var(--page-3wib-light-bg);
      margin-bottom: 20px;
      border-radius: var(--page-3wib-border-radius);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    }

    .page-3wib__section--dark {
      background-color: var(--page-3wib-dark-bg);
    }

    .page-3wib__section-title {
      font-size: 2em;
      margin-bottom: 20px;
      color: var(--page-3wib-primary-color);
      text-transform: uppercase;
      position: relative;
      display: inline-block;
      padding-bottom: 10px;
    }

    .page-3wib__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 60px;
      height: 3px;
      background-color: var(--page-3wib-secondary-color);
    }

    .page-3wib__text-content {
      max-width: 800px;
      margin: 0 auto 30px auto;
      font-size: 1.1em;
      color: var(--page-3wib-text-color);
    }

    .page-3wib__product-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 30px;
      max-width: 1200px;
      margin: 0 auto;
    }

    .page-3wib__product-card {
      background-color: var(--page-3wib-dark-bg);
      border-radius: var(--page-3wib-border-radius);
      overflow: hidden;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      transition: var(--page-3wib-transition);
      text-align: center;
      padding-bottom: 20px;
    }

    .page-3wib__product-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    }

    .page-3wib__product-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .page-3wib__product-title {
      font-size: 1.5em;
      color: var(--page-3wib-primary-color);
      margin: 15px 0 10px 0;
      padding: 0 15px;
    }

    .page-3wib__product-description {
      font-size: 0.95em;
      color: var(--page-3wib-text-color);
      padding: 0 15px;
    }

    .page-3wib__promo-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      list-style: none;
      padding: 0;
      margin: 0 auto;
      max-width: 1000px;
    }

    .page-3wib__promo-item {
      background-color: var(--page-3wib-dark-bg);
      border-left: 5px solid var(--page-3wib-accent-color);
      padding: 20px;
      border-radius: var(--page-3wib-border-radius);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
      text-align: left;
      flex: 1 1 calc(50% - 20px); /* Two columns on desktop */
      box-sizing: border-box;
      transition: var(--page-3wib-transition);
    }

    .page-3wib__promo-item:hover {
      transform: scale(1.02);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    }

    .page-3wib__promo-title {
      color: var(--page-3wib-secondary-color);
      margin-top: 0;
      font-size: 1.3em;
    }

    .page-3wib__feature-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      list-style: none;
      padding: 0;
      margin: 0 auto;
      max-width: 1200px;
    }

    .page-3wib__feature-item {
      background-color: var(--page-3wib-dark-bg);
      padding: 25px;
      border-radius: var(--page-3wib-border-radius);
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      flex: 1 1 calc(33% - 20px); /* Three columns on desktop */
      box-sizing: border-box;
      transition: var(--page-3wib-transition);
    }

    .page-3wib__feature-item:hover {
      background-color: var(--page-3wib-light-bg);
      transform: translateY(-3px);
    }

    .page-3wib__feature-icon {
      width: 80px; /* Min 200x200 requirement, but this is an icon placeholder */
      height: 80px;
      margin-bottom: 15px;
      display: block;
      margin-left: auto;
      margin-right: auto;
      object-fit: contain; /* Use contain for icons */
    }

    .page-3wib__feature-title {
      color: var(--page-3wib-accent-color);
      font-size: 1.4em;
      margin-bottom: 10px;
    }

    .page-3wib__payment-providers,
    .page-3wib__game-providers {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 30px;
      margin-top: 30px;
      max-width: 1000px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-3wib__provider-logo {
      width: 150px; /* Adjust size as needed, min 200x200 for content images */
      height: 80px;
      object-fit: contain;
      filter: grayscale(80%); /* Allowed for logos to fit theme, no color change filters */
      transition: filter 0.3s ease;
    }

    .page-3wib__provider-logo:hover {
      filter: grayscale(0%);
    }

    .page-3wib__faq-container {
      max-width: 800px;
      margin: 0 auto;
      text-align: left;
    }

    .page-3wib__faq-item {
      background-color: var(--page-3wib-dark-bg);
      border-radius: var(--page-3wib-border-radius);
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    }

    .page-3wib__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: var(--page-3wib-light-bg);
      cursor: pointer;
      user-select: none;
      transition: background-color 0.3s ease;
    }

    .page-3wib__faq-question:hover {
      background-color: #4a627d;
    }

    .page-3wib__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: var(--page-3wib-text-color);
      pointer-events: none; /* Prevent h3 from blocking click */
    }

    .page-3wib__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: var(--page-3wib-primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click */
    }

    .page-3wib__faq-item.active .page-3wib__faq-toggle {
      transform: rotate(45deg); /* Visually change + to X or - */
    }

    .page-3wib__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 15px;
      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(--page-3wib-text-color);
      font-size: 0.95em;
    }

    .page-3wib__faq-item.active .page-3wib__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px 15px !important;
      opacity: 1;
    }

    .page-3wib__cta-section {
      background-image: url('[GALLERY:banner:1920x400:cta,gaming,mobile]');
      background-size: cover;
      background-position: center;
      padding: 60px 20px;
      margin-bottom: 0;
      position: relative;
      overflow: hidden;
    }

    .page-3wib__cta-overlay {
      background: rgba(0, 0, 0, 0.6);
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: 1;
    }

    .page-3wib__cta-content {
      position: relative;
      z-index: 2;
      color: #fff;
      max-width: 800px;
      margin: 0 auto;
    }

    .page-3wib__cta-title {
      font-size: 2.2em;
      color: var(--page-3wib-primary-color);
      margin-bottom: 15px;
      text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    }

    .page-3wib__cta-description {
      font-size: 1.1em;
      margin-bottom: 30px;
    }

    /* Mobile responsiveness */
    @media (max-width: 768px) {
      .page-3wib__hero-section {
        height: 50vh;
      }

      .page-3wib__hero-title {
        font-size: 1.8em;
      }

      .page-3wib__hero-subtitle {
        font-size: 1em;
      }

      .page-3wib__floating-buttons {
        bottom: 15px;
        gap: 10px;
      }

      .page-3wib__button {
        padding: 10px 20px;
        font-size: 0.9em;
      }

      .page-3wib__section {
        padding: 30px 15px;
      }

      .page-3wib__section-title {
        font-size: 1.8em;
      }

      .page-3wib__text-content {
        font-size: 1em;
      }

      .page-3wib__product-grid {
        grid-template-columns: 1fr;
      }

      .page-3wib__product-image {
        height: 180px;
      }

      .page-3wib__promo-list,
      .page-3wib__feature-list {
        flex-direction: column;
        gap: 15px;
      }

      .page-3wib__promo-item,
      .page-3wib__feature-item {
        flex: 1 1 100%;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 15px !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }

      .page-3wib__promo-item h3, .page-3wib__feature-item h3 {
        font-size: 1.2em;
      }

      .page-3wib__promo-item p, .page-3wib__feature-item p {
        font-size: 0.9em;
      }

      .page-3wib__payment-providers,
      .page-3wib__game-providers {
        gap: 15px;
        padding: 0 10px;
      }

      .page-3wib__provider-logo {
        width: 120px;
        height: 60px;
      }

      .page-3wib__faq-question {
        padding: 12px 15px;
      }

      .page-3wib__faq-question h3 {
        font-size: 1.1em;
      }

      .page-3wib__faq-toggle {
        font-size: 1.3em;
      }

      .page-3wib__faq-answer {
        padding: 15px 15px !important;
      }

      .page-3wib__cta-section {
        padding: 40px 15px;
      }

      .page-3wib__cta-title {
        font-size: 1.8em;
      }

      .page-3wib__cta-description {
        font-size: 1em;
      }
    }

    @media (max-width: 480px) {
      .page-3wib__hero-section {
        height: 45vh;
      }

      .page-3wib__hero-title {
        font-size: 1.5em;
      }

      .page-3wib__hero-subtitle {
        font-size: 0.9em;
      }

      .page-3wib__button {
        padding: 8px 18px;
        font-size: 0.8em;
      }
    }