:root {
      --primary-color: #ffcc00; /* Gold/Yellow */
      --secondary-color: #333333; /* Dark Grey */
      --background-dark: #1a1a1a; /* Very Dark Grey */
      --background-light: #2c2c2c; /* Slightly Lighter Dark Grey */
      --text-color: #f0f0f0; /* Light Grey for text */
      --accent-color: #007bff; /* Blue for links/buttons */
      --border-color: #444444;
      --spacing-unit: 1rem; /* 16px */
    }

    /* Base styles for the page content */
    .page-yy777-app {
      font-family: 'Arial', sans-serif;
      color: var(--text-color);
      background-color: var(--background-dark);
      line-height: 1.6;
      padding-top: 10px; /* Small decorative padding, body handles main offset */
    }

    .page-yy777-app__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 var(--spacing-unit);
    }

    .page-yy777-app__section {
      padding: 4rem 0;
      text-align: center;
    }

    .page-yy777-app__section--dark {
      background-color: var(--background-light);
    }

    .page-yy777-app__section-title {
      font-size: 2.8rem;
      color: var(--primary-color);
      margin-bottom: 2rem;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .page-yy777-app__section-subtitle {
      font-size: 1.5rem;
      color: var(--text-color);
      margin-bottom: 3rem;
    }

    /* Hero Section */
    .page-yy777-app__hero-section {
      background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), var(--background-dark);
      padding: 6rem 0;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      min-height: 60vh;
      position: relative;
      overflow: hidden;
      text-align: center;
    }

    .page-yy777-app__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: -1;
      opacity: 0.3;
    }

    .page-yy777-app__hero-content {
      position: relative;
      z-index: 1;
      max-width: 900px;
      padding: 0 var(--spacing-unit);
    }

    .page-yy777-app__hero-title {
      font-size: 3.5rem;
      color: var(--primary-color);
      margin-bottom: 1.5rem;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-yy777-app__hero-description {
      font-size: 1.3rem;
      color: var(--text-color);
      margin-bottom: 2.5rem;
    }

    .page-yy777-app__button {
      display: inline-block;
      background-color: var(--primary-color);
      color: var(--secondary-color);
      padding: 1rem 2.5rem;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1rem;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
    }

    .page-yy777-app__button:hover {
      background-color: #ffd700;
      transform: translateY(-3px);
    }

    .page-yy777-app__button--secondary {
      background-color: var(--accent-color);
      color: #fff;
      margin-left: 1rem;
    }

    .page-yy777-app__button--secondary:hover {
      background-color: #0056b3;
    }

    /* Features Section */
    .page-yy777-app__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 2rem;
      margin-top: 3rem;
    }

    .page-yy777-app__feature-card {
      background-color: var(--background-light);
      padding: 2rem;
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-yy777-app__feature-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
    }

    .page-yy777-app__feature-icon {
      width: 100%;
      max-width: 250px;
      height: auto;
      margin-bottom: 1rem;
      border-radius: 8px;
      object-fit: cover;
    }

    .page-yy777-app__feature-title {
      font-size: 1.4rem;
      color: var(--primary-color);
      margin-bottom: 0.8rem;
    }

    .page-yy777-app__feature-description {
      font-size: 1rem;
      color: var(--text-color);
    }

    /* Download Section */
    .page-yy777-app__download-steps {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 2rem;
      margin-top: 3rem;
    }

    .page-yy777-app__step-card {
      background-color: var(--background-light);
      padding: 2rem;
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      text-align: left;
      flex: 1;
      min-width: 280px;
      max-width: 380px;
    }

    .page-yy777-app__step-number {
      font-size: 2.5rem;
      color: var(--primary-color);
      font-weight: bold;
      margin-bottom: 1rem;
    }

    .page-yy777-app__step-title {
      font-size: 1.5rem;
      color: var(--primary-color);
      margin-bottom: 0.8rem;
    }

    .page-yy777-app__step-description {
      font-size: 1rem;
      color: var(--text-color);
    }

    .page-yy777-app__download-image {
      width: 100%;
      max-width: 600px;
      height: auto;
      margin-top: 3rem;
      border-radius: 10px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      object-fit: cover;
    }

    /* Games Section */
    .page-yy777-app__games-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 1.5rem;
      margin-top: 3rem;
    }

    .page-yy777-app__game-card {
      background-color: var(--background-light);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .page-yy777-app__game-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
    }

    .page-yy777-app__game-image {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-bottom: 2px solid var(--border-color);
    }

    .page-yy777-app__game-info {
      padding: 1.5rem;
    }

    .page-yy777-app__game-title {
      font-size: 1.2rem;
      color: var(--primary-color);
      margin-bottom: 0.5rem;
    }

    .page-yy777-app__game-provider {
      font-size: 0.9rem;
      color: var(--text-color);
      opacity: 0.8;
    }

    /* Payment Section */
    .page-yy777-app__payments-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 1.5rem;
      margin-top: 3rem;
    }

    .page-yy777-app__payment-item {
      background-color: var(--background-light);
      padding: 1rem 2rem;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
      font-size: 1.1rem;
      font-weight: bold;
      color: var(--text-color);
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .page-yy777-app__payment-icon {
      width: 100%;
      max-width: 40px; /* Small icon, but must be at least 200x200 in gallery. */
      height: auto;
      object-fit: contain;
    }

    /* FAQ Section */
    .page-yy777-app__faq-list {
      margin-top: 3rem;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      text-align: left;
    }

    .page-yy777-app__faq-item {
      background-color: var(--background-light);
      margin-bottom: 1rem;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    }

    .page-yy777-app__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1.5rem;
      cursor: pointer;
      background-color: var(--secondary-color);
      color: var(--primary-color);
      font-size: 1.2rem;
      font-weight: bold;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-yy777-app__faq-question h3 {
      margin: 0;
      pointer-events: none; /* Prevent h3 from blocking click on parent */
    }

    .page-yy777-app__faq-question:hover {
      background-color: #4a4a4a;
    }

    .page-yy777-app__faq-toggle {
      font-size: 1.8rem;
      line-height: 1;
      margin-left: 1rem;
      pointer-events: none; /* Prevent toggle icon from blocking click on parent */
      transition: transform 0.3s ease;
    }

    .page-yy777-app__faq-item.active .page-yy777-app__faq-toggle {
      transform: rotate(45deg); /* Plus to X */
    }

    .page-yy777-app__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 1.5rem;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      background-color: var(--background-dark);
      color: var(--text-color);
    }

    .page-yy777-app__faq-item.active .page-yy777-app__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 1.5rem !important;
      opacity: 1;
    }

    .page-yy777-app__faq-answer p {
      margin-top: 0;
      margin-bottom: 1rem;
      font-size: 1rem;
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .page-yy777-app__hero-title {
        font-size: 3rem;
      }
      .page-yy777-app__section-title {
        font-size: 2.2rem;
      }
    }

    @media (max-width: 768px) {
      .page-yy777-app__section {
        padding: 3rem 0;
      }
      .page-yy777-app__hero-title {
        font-size: 2.5rem;
      }
      .page-yy777-app__hero-description {
        font-size: 1.1rem;
      }
      .page-yy777-app__button {
        padding: 0.8rem 2rem;
        font-size: 1rem;
      }
      .page-yy777-app__button--secondary {
        margin-left: 0;
        margin-top: 1rem;
      }
      .page-yy777-app__download-steps {
        flex-direction: column;
        align-items: center;
      }
      .page-yy777-app__step-card {
        max-width: 100%;
      }
      .page-yy777-app__features-grid,
      .page-yy777-app__games-grid,
      .page-yy777-app__payments-list {
        grid-template-columns: 1fr;
        gap: 1rem;
      }
      .page-yy777-app__feature-card,
      .page-yy777-app__game-card,
      .page-yy777-app__payment-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 1rem !important; /* Adjust padding for smaller screens */
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }
      .page-yy777-app__payments-list,
      .page-yy777-app__features-grid,
      .page-yy777-app__games-grid {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
      .page-yy777-app__faq-question {
        font-size: 1.1rem;
        padding: 1rem;
      }
      .page-yy777-app__faq-answer {
        padding: 15px 1rem !important;
      }
      .page-yy777-app__faq-answer p {
        font-size: 0.95rem;
      }
      .page-yy777-app__feature-icon,
      .page-yy777-app__download-image,
      .page-yy777-app__game-image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
    }

    @media (max-width: 480px) {
      .page-yy777-app__hero-title {
        font-size: 2rem;
      }
      .page-yy777-app__section-title {
        font-size: 1.8rem;
      }
      .page-yy777-app__button {
        display: block;
        width: 100%;
        margin-bottom: 1rem;
      }
      .page-yy777-app__button--secondary {
        margin-left: 0;
      }
    }