:root {
        --page-web-primary-color: #f7d300; /* Vàng */
        --page-web-secondary-color: #ffffff; /* Trắng */
        --page-web-background-color: #1a1a1a; /* Đen đậm */
        --page-web-dark-text: #333333;
        --page-web-light-text: #ffffff;
        --page-web-promo-button-bg: #2563eb; /* Màu xanh khuyến mãi */
      }

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

      .page-web__hero-section {
        padding-top: 10px;
        text-align: center;
        background-color: var(--page-web-background-color);
        position: relative;
        z-index: 1;
        padding-bottom: 40px;
      }

      .page-web__hero-image {
        width: 100%;
        height: auto;
        display: block;
        margin-bottom: 20px;
        border-radius: 8px;
        object-fit: cover;
      }

      .page-web__hero-content {
        max-width: 900px;
        margin: 0 auto;
        padding: 0 15px;
      }

      .page-web__main-title {
        color: var(--page-web-primary-color);
        font-weight: 700;
        line-height: 1.2;
        margin-bottom: 15px;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
      }

      .page-web__description {
        color: var(--page-web-secondary-color);
        margin-bottom: 30px;
        font-size: 1.1em;
      }

      .page-web__cta-buttons {
        display: flex;
        justify-content: center;
        gap: 20px;
        flex-wrap: wrap;
        margin-top: 20px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        overflow: hidden;
      }

      .page-web__btn-primary,
      .page-web__btn-secondary {
        display: inline-block;
        padding: 15px 30px;
        border-radius: 50px;
        text-decoration: none;
        font-weight: 700;
        font-size: 1.1em;
        transition: all 0.3s ease;
        cursor: pointer;
        text-align: center;
        max-width: 300px;
        box-sizing: border-box;
        white-space: normal;
        word-wrap: break-word;
      }

      .page-web__btn-primary {
        background-color: var(--page-web-primary-color);
        color: var(--page-web-dark-text);
        border: 2px solid var(--page-web-primary-color);
      }

      .page-web__btn-primary:hover {
        background-color: #e0bb00;
        border-color: #e0bb00;
      }

      .page-web__btn-secondary {
        background-color: transparent;
        color: var(--page-web-primary-color);
        border: 2px solid var(--page-web-primary-color);
      }

      .page-web__btn-secondary:hover {
        background-color: var(--page-web-primary-color);
        color: var(--page-web-dark-text);
      }

      .page-web__section {
        padding: 60px 20px;
        text-align: center;
        max-width: 1200px;
        margin: 0 auto;
        box-sizing: border-box;
      }

      .page-web__section-dark {
        background-color: #0f0f0f;
      }

      .page-web__section-title {
        color: var(--page-web-primary-color);
        font-size: 2.5em;
        margin-bottom: 30px;
        font-weight: 700;
      }

      .page-web__section-subtitle {
        color: var(--page-web-secondary-color);
        font-size: 1.2em;
        margin-bottom: 40px;
      }

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

      .page-web__game-card {
        background-color: #2a2a2a;
        border-radius: 12px;
        overflow: hidden;
        text-align: left;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        color: var(--page-web-light-text);
        height: 100%;
        display: flex;
        flex-direction: column;
      }

      .page-web__game-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
      }

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

      .page-web__game-card-content {
        padding: 25px;
        flex-grow: 1;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
      }

      .page-web__game-card-title {
        color: var(--page-web-primary-color);
        font-size: 1.5em;
        margin-bottom: 10px;
        font-weight: 600;
      }

      .page-web__game-card-description {
        font-size: 0.95em;
        line-height: 1.5;
        margin-bottom: 15px;
      }

      .page-web__game-card-link {
        display: inline-block;
        background-color: var(--page-web-promo-button-bg);
        color: var(--page-web-light-text);
        padding: 10px 20px;
        border-radius: 25px;
        text-decoration: none;
        font-weight: 600;
        font-size: 0.9em;
        transition: background-color 0.3s ease;
        margin-top: auto;
        max-width: 100%;
        box-sizing: border-box;
        white-space: normal;
        word-wrap: break-word;
      }

      .page-web__game-card-link:hover {
        background-color: #1e40af;
      }

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

      .page-web__provider-logo {
        width: 100%;
        height: auto;
        max-width: 180px;
        margin: 0 auto;
        display: block;
        filter: grayscale(100%);
        opacity: 0.7;
        transition: filter 0.3s ease, opacity 0.3s ease;
      }

      .page-web__provider-logo:hover {
        filter: grayscale(0%);
        opacity: 1;
      }

      .page-web__why-choose-list {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
        text-align: left;
        margin-top: 40px;
      }

      .page-web__why-choose-item {
        background-color: #2a2a2a;
        padding: 30px;
        border-radius: 12px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      }

      .page-web__why-choose-icon {
        color: var(--page-web-primary-color);
        font-size: 2.5em;
        margin-bottom: 15px;
      }

      .page-web__why-choose-title {
        color: var(--page-web-primary-color);
        font-size: 1.4em;
        margin-bottom: 10px;
        font-weight: 600;
      }

      .page-web__why-choose-description {
        color: var(--page-web-secondary-color);
        font-size: 0.95em;
      }

      .page-web__how-to-guide {
        display: flex;
        flex-direction: column;
        gap: 40px;
        margin-top: 40px;
      }

      .page-web__guide-step {
        display: flex;
        align-items: flex-start;
        text-align: left;
        gap: 20px;
      }

      .page-web__guide-number {
        background-color: var(--page-web-primary-color);
        color: var(--page-web-dark-text);
        width: 40px;
        height: 40px;
        min-width: 40px;
        min-height: 40px;
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: 1.5em;
        font-weight: 700;
      }

      .page-web__guide-content {
        flex-grow: 1;
      }

      .page-web__guide-title {
        color: var(--page-web-primary-color);
        font-size: 1.5em;
        margin-bottom: 10px;
        font-weight: 600;
      }

      .page-web__guide-description {
        color: var(--page-web-secondary-color);
        font-size: 1em;
      }

      .page-web__faq-section {
        background-color: #0f0f0f;
      }

      .page-web__faq-item {
        margin-bottom: 15px;
        background-color: #2a2a2a;
        border-radius: 8px;
        overflow: hidden;
        color: var(--page-web-light-text);
      }

      .page-web__faq-question {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px;
        cursor: pointer;
        user-select: none;
        font-weight: 600;
        font-size: 1.1em;
        color: var(--page-web-primary-color);
        transition: background-color 0.3s ease;
      }

      .page-web__faq-question:hover {
        background-color: #3a3a3a;
      }

      .page-web__faq-question h3 {
        margin: 0;
        font-size: 1.1em;
        color: var(--page-web-primary-color);
        pointer-events: none; /* Prevent h3 from blocking click */
      }

      .page-web__faq-toggle {
        font-size: 1.5em;
        font-weight: 700;
        color: var(--page-web-primary-color);
        pointer-events: none; /* Prevent toggle from blocking click */
      }

      .page-web__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(--page-web-secondary-color);
      }

      .page-web__faq-item.active .page-web__faq-answer {
        max-height: 2000px !important;
        padding: 20px !important;
        opacity: 1;
      }

      .page-web__social-media-section {
        padding: 60px 20px;
        text-align: center;
        background-color: #0f0f0f;
      }

      .page-web__social-grid {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 30px;
        margin-top: 40px;
      }

      .page-web__social-link {
        color: var(--page-web-secondary-color);
        font-size: 2.5em;
        transition: color 0.3s ease, transform 0.3s ease;
        text-decoration: none;
      }

      .page-web__social-link:hover {
        color: var(--page-web-primary-color);
        transform: translateY(-5px);
      }

      .page-web__floating-button {
        position: fixed;
        bottom: 20px;
        right: 20px;
        background-color: var(--page-web-promo-button-bg);
        color: var(--page-web-light-text);
        padding: 15px 25px;
        border-radius: 30px;
        text-decoration: none;
        font-weight: 700;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
        z-index: 1000;
        transition: background-color 0.3s ease;
        animation: pulse 2s infinite;
        max-width: 250px;
        box-sizing: border-box;
        text-align: center;
        white-space: normal;
        word-wrap: break-word;
      }

      .page-web__floating-button:hover {
        background-color: #1e40af;
      }

      @keyframes pulse {
        0% { transform: scale(1); }
        50% { transform: scale(1.05); }
        100% { transform: scale(1); }
      }

      /* General image responsiveness */
      .page-web img {
        max-width: 100%;
        height: auto;
        display: block;
      }

      /* Mobile responsiveness */
      @media (max-width: 768px) {
        .page-web {
          font-size: 15px;
          line-height: 1.5;
        }

        .page-web__hero-section {
          padding-top: 10px !important; /* Rely on body padding for header offset */
          padding-bottom: 20px;
        }

        .page-web__main-title {
          font-size: 2em;
        }

        .page-web__description {
          font-size: 1em;
        }

        .page-web__cta-buttons {
          flex-direction: column;
          gap: 15px;
          padding: 0 15px;
        }

        .page-web__btn-primary,
        .page-web__btn-secondary {
          width: 100% !important;
          max-width: 100% !important;
          padding: 12px 20px;
          font-size: 1em;
          box-sizing: border-box !important;
          white-space: normal !important;
          word-wrap: break-word !important;
        }

        .page-web__section {
          padding: 40px 15px;
        }

        .page-web__section-title {
          font-size: 2em;
        }

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

        .page-web__game-grid,
        .page-web__why-choose-list {
          grid-template-columns: 1fr;
          gap: 20px;
        }

        .page-web__game-card-image {
          height: 180px;
        }

        .page-web__game-card-title {
          font-size: 1.3em;
        }

        .page-web__game-card-link {
          padding: 8px 15px;
          font-size: 0.85em;
          width: 100% !important;
          max-width: 100% !important;
          box-sizing: border-box !important;
          white-space: normal !important;
          word-wrap: break-word !important;
        }

        .page-web__provider-grid {
          grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
          gap: 15px;
        }

        .page-web__provider-logo {
          max-width: 120px;
        }

        .page-web__guide-step {
          flex-direction: column;
          align-items: center;
          text-align: center;
          gap: 15px;
        }

        .page-web__guide-number {
          font-size: 1.2em;
          width: 35px;
          height: 35px;
          min-width: 35px;
          min-height: 35px;
        }

        .page-web__guide-title {
          font-size: 1.3em;
        }

        .page-web__faq-question {
          font-size: 1em;
          padding: 15px;
        }

        .page-web__faq-question h3 {
          font-size: 1em;
        }

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

        .page-web__social-grid {
          gap: 20px;
        }

        .page-web__social-link {
          font-size: 2em;
        }

        .page-web__floating-button {
          bottom: 15px;
          right: 15px;
          padding: 12px 20px;
          font-size: 0.9em;
          max-width: 200px;
          width: 100% !important;
          box-sizing: border-box !important;
          white-space: normal !important;
          word-wrap: break-word !important;
        }

        .page-web img {
          max-width: 100% !important;
          width: 100% !important;
          height: auto !important;
          box-sizing: border-box !important;
        }

        .page-web__section,
        .page-web__card,
        .page-web__container,
        .page-web__game-card,
        .page-web__why-choose-item,
        .page-web__faq-item,
        .page-web__how-to-guide {
          max-width: 100% !important;
          width: 100% !important;
          box-sizing: border-box !important;
          padding-left: 15px;
          padding-right: 15px;
        }

        .page-web__game-grid,
        .page-web__why-choose-list {
          padding-left: 0;
          padding-right: 0;
        }

        .page-web__guide-step {
          padding-left: 0;
          padding-right: 0;
        }
      }