:root {
      --primary-color: #f7b32b; /* A vibrant gold/orange */
      --secondary-color: #2c3e50; /* Dark blue/grey for contrast */
      --accent-color: #e74c3c; /* Red for alerts/highlights */
      --text-light: #ecf0f1; /* Light grey for text on dark backgrounds */
      --text-dark: #34495e; /* Dark grey for text on light backgrounds */
      --bg-dark: #1a252f; /* Even darker background */
      --bg-light: #ffffff; /* White background */
      --border-color: #3f556b;
      --shadow-color: rgba(0, 0, 0, 0.2);
    }

    .page-phbet-vip-app {
      font-family: 'Arial', sans-serif;
      color: var(--text-dark);
      line-height: 1.6;
      background-color: var(--bg-light);
    }

    .page-phbet-vip-app__section {
      padding: 60px 20px;
      max-width: 1200px;
      margin: 0 auto;
    }

    .page-phbet-vip-app__section--dark {
      background-color: var(--bg-dark);
      color: var(--text-light);
    }

    .page-phbet-vip-app__section-title {
      font-size: 2.8em;
      color: var(--secondary-color);
      text-align: center;
      margin-bottom: 40px;
      font-weight: bold;
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__section-title {
      color: var(--primary-color);
    }

    .page-phbet-vip-app__hero-section {
      background: linear-gradient(135deg, var(--secondary-color), var(--bg-dark));
      color: var(--text-light);
      padding: 10px 20px 80px; /* Small top padding, assuming body has padding-top */
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
      overflow: hidden;
      min-height: 500px;
      justify-content: center;
    }

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

    .page-phbet-vip-app__hero-content {
      position: relative;
      z-index: 1;
      max-width: 900px;
    }

    .page-phbet-vip-app__hero-title {
      font-size: 3.5em;
      margin-bottom: 20px;
      color: var(--primary-color);
      line-height: 1.1;
    }

    .page-phbet-vip-app__hero-description {
      font-size: 1.4em;
      margin-bottom: 30px;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-phbet-vip-app__download-button {
      background-color: var(--primary-color);
      color: var(--bg-dark);
      padding: 15px 30px;
      font-size: 1.2em;
      font-weight: bold;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 4px 15px var(--shadow-color);
    }

    .page-phbet-vip-app__download-button:hover {
      background-color: #e6a020;
      transform: translateY(-2px);
    }

    .page-phbet-vip-app__image-container {
      margin-top: 40px;
      width: 100%;
      max-width: 400px;
      overflow: hidden;
      box-sizing: border-box;
      border-radius: 15px;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    }

    .page-phbet-vip-app__app-screenshot {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: 15px;
    }

    .page-phbet-vip-app__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-phbet-vip-app__feature-card {
      background-color: var(--bg-light);
      border-radius: 12px;
      padding: 30px;
      text-align: center;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__feature-card {
      background-color: var(--secondary-color);
      color: var(--text-light);
      border-color: var(--bg-dark);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }

    .page-phbet-vip-app__feature-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    }

    .page-phbet-vip-app__feature-icon {
      width: 120px; /* Min size 200px, so this is just a visual representation */
      height: 120px;
      margin-bottom: 20px;
      border-radius: 50%;
      background-color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--bg-dark);
      font-size: 3em;
      font-weight: bold;
      flex-shrink: 0;
    }
    .page-phbet-vip-app__feature-image {
      max-width: 200px;
      height: auto;
      margin-bottom: 20px;
      border-radius: 8px;
    }

    .page-phbet-vip-app__feature-title {
      font-size: 1.5em;
      color: var(--secondary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__feature-title {
      color: var(--primary-color);
    }

    .page-phbet-vip-app__feature-description {
      font-size: 1em;
      color: var(--text-dark);
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__feature-description {
      color: var(--text-light);
    }

    .page-phbet-vip-app__guide-list {
      display: flex;
      flex-direction: column;
      gap: 25px;
      counter-reset: step-counter;
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .page-phbet-vip-app__guide-step {
      display: flex;
      align-items: flex-start;
      background-color: var(--bg-light);
      padding: 25px;
      border-radius: 12px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      border: 1px solid var(--border-color);
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__guide-step {
      background-color: var(--secondary-color);
      color: var(--text-light);
      border-color: var(--bg-dark);
    }

    .page-phbet-vip-app__step-number {
      counter-increment: step-counter;
      font-size: 2em;
      font-weight: bold;
      color: var(--primary-color);
      margin-right: 20px;
      flex-shrink: 0;
      width: 50px;
      height: 50px;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 2px solid var(--primary-color);
      border-radius: 50%;
    }

    .page-phbet-vip-app__step-text {
      font-size: 1.1em;
      color: var(--text-dark);
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__step-text {
      color: var(--text-light);
    }

    .page-phbet-vip-app__promo-cards {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
    }

    .page-phbet-vip-app__promo-card {
      background-color: var(--bg-light);
      border-radius: 12px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
      overflow: hidden;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__promo-card {
      background-color: var(--secondary-color);
      color: var(--text-light);
      border-color: var(--bg-dark);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }

    .page-phbet-vip-app__promo-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .page-phbet-vip-app__promo-content {
      padding: 25px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .page-phbet-vip-app__promo-title {
      font-size: 1.6em;
      color: var(--secondary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__promo-title {
      color: var(--primary-color);
    }

    .page-phbet-vip-app__promo-description {
      font-size: 1em;
      color: var(--text-dark);
      margin-bottom: 15px;
      flex-grow: 1;
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__promo-description {
      color: var(--text-light);
    }

    .page-phbet-vip-app__promo-button {
      background-color: var(--primary-color);
      color: var(--bg-dark);
      padding: 10px 20px;
      font-size: 1em;
      font-weight: bold;
      border: none;
      border-radius: 6px;
      cursor: pointer;
      transition: background-color 0.3s ease;
      align-self: flex-start;
    }

    .page-phbet-vip-app__promo-button:hover {
      background-color: #e6a020;
    }

    .page-phbet-vip-app__payment-methods-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin-top: 40px;
    }

    .page-phbet-vip-app__payment-item {
      background-color: var(--bg-light);
      padding: 20px;
      border-radius: 10px;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
      border: 1px solid var(--border-color);
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__payment-item {
      background-color: var(--secondary-color);
      color: var(--text-light);
      border-color: var(--bg-dark);
    }

    .page-phbet-vip-app__payment-logo {
      max-width: 100px;
      height: auto;
      display: block;
      margin: 0 auto 10px;
    }

    .page-phbet-vip-app__payment-name {
      font-size: 1em;
      font-weight: bold;
      color: var(--secondary-color);
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__payment-name {
      color: var(--primary-color);
    }

    .page-phbet-vip-app__faq-list {
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .page-phbet-vip-app__faq-item {
      background-color: var(--bg-light);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__faq-item {
      background-color: var(--secondary-color);
      border-color: var(--bg-dark);
    }

    .page-phbet-vip-app__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 25px;
      cursor: pointer;
      user-select: none;
      background-color: var(--bg-light);
      transition: background-color 0.3s ease;
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__faq-question {
      background-color: var(--secondary-color);
    }

    .page-phbet-vip-app__faq-question:hover {
      background-color: #f5f5f5;
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__faq-question:hover {
      background-color: #3f556b;
    }

    .page-phbet-vip-app__faq-question-text {
      font-size: 1.2em;
      color: var(--secondary-color);
      font-weight: bold;
      margin: 0;
      pointer-events: none; /* Prevent text selection from interfering with click */
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__faq-question-text {
      color: var(--primary-color);
    }

    .page-phbet-vip-app__faq-toggle {
      font-size: 1.8em;
      font-weight: bold;
      color: var(--primary-color);
      margin-left: 15px;
      pointer-events: none; /* Prevent toggle icon from interfering with click */
      transition: transform 0.3s ease;
    }

    .page-phbet-vip-app__faq-item.active .page-phbet-vip-app__faq-toggle {
      transform: rotate(45deg);
    }

    .page-phbet-vip-app__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      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-dark);
      background-color: #fcfcfc;
    }

    .page-phbet-vip-app__section--dark .page-phbet-vip-app__faq-answer {
      background-color: #3f556b;
      color: var(--text-light);
    }

    .page-phbet-vip-app__faq-item.active .page-phbet-vip-app__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to accommodate content */
      padding: 20px 25px !important;
      opacity: 1;
    }

    /* Responsive Design */
    @media (max-width: 1024px) {
      .page-phbet-vip-app__section-title {
        font-size: 2.2em;
      }
      .page-phbet-vip-app__hero-title {
        font-size: 2.8em;
      }
      .page-phbet-vip-app__hero-description {
        font-size: 1.2em;
      }
      .page-phbet-vip-app__feature-title {
        font-size: 1.3em;
      }
      .page-phbet-vip-app__promo-title {
        font-size: 1.4em;
      }
      .page-phbet-vip-app__faq-question-text {
        font-size: 1.1em;
      }
    }

    @media (max-width: 768px) {
      .page-phbet-vip-app__section {
        padding: 40px 15px;
      }
      .page-phbet-vip-app__hero-section {
        padding-top: 10px; /* Small top padding for hero on mobile */
        min-height: 450px;
      }
      .page-phbet-vip-app__section-title {
        font-size: 2em;
        margin-bottom: 30px;
      }
      .page-phbet-vip-app__hero-title {
        font-size: 2.2em;
      }
      .page-phbet-vip-app__hero-description {
        font-size: 1em;
      }
      .page-phbet-vip-app__download-button {
        padding: 12px 25px;
        font-size: 1.1em;
      }
      .page-phbet-vip-app__image-container {
        max-width: 300px;
        margin-top: 30px;
      }
      .page-phbet-vip-app__features-grid,
      .page-phbet-vip-app__promo-cards,
      .page-phbet-vip-app__payment-methods-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .page-phbet-vip-app__feature-card,
      .page-phbet-vip-app__promo-card,
      .page-phbet-vip-app__payment-item,
      .page-phbet-vip-app__guide-step,
      .page-phbet-vip-app__faq-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        padding: 20px !important; /* Adjust padding for mobile */
      }
      .page-phbet-vip-app__guide-list,
      .page-phbet-vip-app__faq-list {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
      .page-phbet-vip-app__step-number {
        font-size: 1.8em;
        width: 45px;
        height: 45px;
        margin-right: 15px;
      }
      .page-phbet-vip-app__step-text {
        font-size: 1em;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }
      .page-phbet-vip-app__feature-description,
      .page-phbet-vip-app__promo-description {
        font-size: 0.95em;
      }
      .page-phbet-vip-app__faq-question {
        padding: 15px 20px;
      }
      .page-phbet-vip-app__faq-question-text {
        font-size: 1em;
      }
      .page-phbet-vip-app__faq-answer {
        padding: 15px 20px !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }
    }

    @media (max-width: 480px) {
      .page-phbet-vip-app__hero-title {
        font-size: 1.8em;
      }
      .page-phbet-vip-app__hero-description {
        font-size: 0.9em;
      }
      .page-phbet-vip-app__download-button {
        font-size: 1em;
        padding: 10px 20px;
      }
      .page-phbet-vip-app__section-title {
        font-size: 1.8em;
      }
      .page-phbet-vip-app__faq-toggle {
        font-size: 1.5em;
      }
    }