:root {
      --page-q88-primary-color: #e44d26; /* Màu cam đỏ */
      --page-q88-secondary-color: #f7b731; /* Màu vàng cam */
      --page-q88-dark-background: #1a1a2e; /* Nền tối */
      --page-q88-dark-card-background: #2a2a4a; /* Nền thẻ tối */
      --page-q88-text-color: #ffffff; /* Chữ trắng */
      --page-q88-light-text-color: #e0e0e0; /* Chữ trắng nhạt */
      --page-q88-border-color: #4a4a6a; /* Màu viền */
      --page-q88-button-hover-color: #ff6f3d; /* Màu nút hover */
    }

    .page-q88 {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color: var(--page-q88-dark-background);
      color: var(--page-q88-text-color);
      line-height: 1.6;
      overflow-x: hidden;
    }

    .page-q88__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-q88__hero-section {
      text-align: center;
      padding-top: 120px; /* Cho desktop */
      padding-bottom: 40px;
      background: linear-gradient(135deg, var(--page-q88-dark-background), #0f0f1d);
      position: relative;
    }

    @media (max-width: 768px) {
      .page-q88__hero-section {
        padding-top: 100px; /* Cho mobile */
      }
    }

    .page-q88__hero-image {
      width: 100%;
      max-width: 100%;
      height: auto;
      display: block;
      margin: 0 auto 20px auto;
      border-radius: 10px;
      box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
      object-fit: cover;
    }

    .page-q88__hero-content {
      position: relative;
      z-index: 1;
      padding: 0 20px;
    }

    .page-q88__hero-title {
      font-size: 2.8em;
      color: var(--page-q88-secondary-color);
      margin-bottom: 15px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
      font-weight: bold;
    }

    .page-q88__hero-description {
      font-size: 1.2em;
      color: var(--page-q88-light-text-color);
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-q88__cta-button {
      display: inline-block;
      background-color: var(--page-q88-primary-color);
      color: var(--page-q88-text-color);
      padding: 15px 30px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      border: none;
      cursor: pointer;
    }

    .page-q88__cta-button:hover {
      background-color: var(--page-q88-button-hover-color);
      transform: translateY(-3px);
    }

    .page-q88__floating-login-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-q88-primary-color);
      color: var(--page-q88-text-color);
      padding: 12px 25px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1em;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
      z-index: 1000;
      transition: background-color 0.3s ease, transform 0.2s ease;
      animation: page-q88__bounce 2s infinite;
      border: none;
      cursor: pointer;
    }

    .page-q88__floating-login-button:hover {
      background-color: var(--page-q88-button-hover-color);
      transform: scale(1.05);
      animation: none;
    }

    @keyframes page-q88__bounce {
      0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
      }
      40% {
        transform: translateY(-10px);
      }
      60% {
        transform: translateY(-5px);
      }
    }

    .page-q88__section {
      padding: 60px 0;
      text-align: center;
      border-bottom: 1px solid var(--page-q88-border-color);
    }

    .page-q88__section:last-of-type {
      border-bottom: none;
    }

    .page-q88__section-title {
      font-size: 2.2em;
      color: var(--page-q88-secondary-color);
      margin-bottom: 40px;
      position: relative;
      padding-bottom: 10px;
    }

    .page-q88__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-q88-primary-color);
      border-radius: 2px;
    }

    .page-q88__text-content {
      font-size: 1.1em;
      color: var(--page-q88-light-text-color);
      max-width: 900px;
      margin: 0 auto 30px auto;
      text-align: left;
    }

    .page-q88__grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-q88__card {
      background-color: var(--page-q88-dark-card-background);
      border-radius: 10px;
      padding: 25px;
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--page-q88-border-color);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      height: 100%;
    }

    .page-q88__card:hover {
      transform: translateY(-8px);
      box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
    }

    .page-q88__card-image {
      width: 100%;
      max-width: 100%;
      height: 200px;
      object-fit: cover;
      border-radius: 8px;
      margin-bottom: 15px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }

    .page-q88__card-title {
      font-size: 1.5em;
      color: var(--page-q88-primary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .page-q88__card-description {
      color: var(--page-q88-light-text-color);
      font-size: 0.95em;
      flex-grow: 1;
    }

    .page-q88__card-link {
      display: inline-block;
      margin-top: 15px;
      color: var(--page-q88-secondary-color);
      text-decoration: none;
      font-weight: bold;
      transition: color 0.3s ease;
    }

    .page-q88__card-link:hover {
      color: var(--page-q88-button-hover-color);
      text-decoration: underline;
    }

    .page-q88__provider-logo {
      width: 100%;
      max-width: 180px; /* Reduced max-width for logos to fit better */
      height: auto;
      object-fit: contain;
      margin: 10px auto;
      filter: grayscale(20%);
      transition: filter 0.3s ease;
    }

    .page-q88__provider-logo:hover {
      filter: grayscale(0%);
    }

    .page-q88__faq-section {
      padding: 60px 0;
      background-color: #151525;
      border-bottom: 1px solid var(--page-q88-border-color);
    }

    .page-q88__faq-list {
      max-width: 900px;
      margin: 0 auto;
      text-align: left;
    }

    .page-q88__faq-item {
      background-color: var(--page-q88-dark-card-background);
      border: 1px solid var(--page-q88-border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }

    .page-q88__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      background-color: #3a3a5a;
      border-bottom: 1px solid var(--page-q88-border-color);
      user-select: none;
      transition: background-color 0.3s ease;
    }

    .page-q88__faq-question:hover {
      background-color: #4a4a6a;
    }

    .page-q88__faq-question h3 {
      margin: 0;
      font-size: 1.2em;
      color: var(--page-q88-text-color);
      pointer-events: none; /* Prevent h3 from blocking click */
    }

    .page-q88__faq-toggle {
      font-size: 1.8em;
      font-weight: bold;
      color: var(--page-q88-secondary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle from blocking click */
    }

    .page-q88__faq-item.active .page-q88__faq-toggle {
      transform: rotate(45deg); /* Plus to X (minus visual) */
    }

    .page-q88__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      background-color: var(--page-q88-dark-card-background);
      color: var(--page-q88-light-text-color);
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      text-align: left;
      font-size: 1em;
    }

    .page-q88__faq-item.active .page-q88__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to show content */
      padding: 20px 20px !important;
      opacity: 1;
    }

    .page-q88__contact-info {
      list-style: none;
      padding: 0;
      margin-top: 20px;
      display: flex;
      justify-content: center;
      gap: 30px;
      flex-wrap: wrap;
    }

    .page-q88__contact-item {
      font-size: 1.1em;
      color: var(--page-q88-light-text-color);
      display: flex;
      align-items: center;
    }

    .page-q88__contact-item a {
      color: var(--page-q88-secondary-color);
      text-decoration: none;
      transition: color 0.3s ease;
    }

    .page-q88__contact-item a:hover {
      color: var(--page-q88-primary-color);
    }

    .page-q88__payment-methods {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      margin-top: 40px;
    }

    .page-q88__payment-logo {
      width: 100%;
      max-width: 100px;
      height: auto;
      object-fit: contain;
      filter: brightness(0.8);
      transition: filter 0.3s ease;
    }

    .page-q88__payment-logo:hover {
      filter: brightness(1);
    }

    /* Responsive adjustments */
    @media (max-width: 1024px) {
      .page-q88__hero-title {
        font-size: 2.5em;
      }
      .page-q88__section-title {
        font-size: 2em;
      }
      .page-q88__grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      }
    }

    @media (max-width: 768px) {
      .page-q88__container {
        padding: 15px;
      }
      .page-q88__hero-title {
        font-size: 2em;
      }
      .page-q88__hero-description {
        font-size: 1em;
      }
      .page-q88__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }
      .page-q88__section {
        padding: 40px 0;
      }
      .page-q88__section-title {
        font-size: 1.8em;
      }
      .page-q88__text-content {
        font-size: 0.95em;
      }
      .page-q88__grid {
        grid-template-columns: 1fr;
      }
      .page-q88__card-image {
        height: 180px;
      }
      .page-q88__card-title {
        font-size: 1.3em;
      }
      .page-q88__faq-question h3 {
        font-size: 1.1em;
      }
      .page-q88__faq-answer {
        font-size: 0.9em;
        padding: 0 15px;
      }
      .page-q88__faq-item.active .page-q88__faq-answer {
        padding: 15px 15px !important;
      }
      .page-q88__contact-info {
        flex-direction: column;
        gap: 15px;
      }
      .page-q88__floating-login-button {
        bottom: 15px;
        right: 15px;
        padding: 10px 20px;
        font-size: 0.9em;
      }
    }

    /* Ensure all images are responsive */
    .page-q88 img {
      max-width: 100%;
      height: auto;
      box-sizing: border-box;
      display: block; /* To remove extra space below image */
    }

    /* Force responsive image styles for mobile */
    @media (max-width: 768px) {
      .page-q88 img {
        max-width: 100% !important;
        height: auto !important;
      }
      .page-q88__hero-image,
      .page-q88__card-image,
      .page-q88__provider-logo,
      .page-q88__payment-logo {
        max-width: 100% !important;
        height: auto !important;
      }
    }