:root {
      --primary-color: #e44d26; /* Màu cam đỏ */
      --secondary-color: #333;
      --accent-color: #f7b731; /* Vàng cam */
      --background-dark: #1a1a1a;
      --background-light: #f4f4f4;
      --text-light: #fff;
      --text-dark: #333;
      --border-color: #444;
      --button-hover: #ff6a00;
      --shadow-color: rgba(0, 0, 0, 0.3);
    }

    /* Base styles for the page-55vin container */
    .page-55vin {
      font-family: 'Arial', sans-serif;
      color: var(--text-light);
      background-color: var(--background-dark);
      line-height: 1.6;
      padding-top: var(--header-offset, 122px); /* Fallback for header offset */
    }

    .page-55vin__section {
      padding: 40px 20px;
      max-width: 1200px;
      margin: 0 auto;
      text-align: center;
    }

    .page-55vin__section--light {
      background-color: var(--background-dark);
    }

    .page-55vin__section-title {
      font-size: 2.5em;
      color: var(--primary-color);
      margin-bottom: 30px;
      position: relative;
      padding-bottom: 10px;
    }

    .page-55vin__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 3px;
      background-color: var(--accent-color);
    }

    /* Hero Section */
    .page-55vin__hero-section {
      background-color: var(--background-dark);
      padding: 50px 20px 80px;
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 400px;
    }

    .page-55vin__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 0;
      opacity: 0.3;
    }

    .page-55vin__hero-content {
      position: relative;
      z-index: 1;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .page-55vin__hero-title {
      font-size: 3em;
      color: var(--primary-color);
      margin-bottom: 20px;
      text-shadow: 2px 2px 4px var(--shadow-color);
    }

    .page-55vin__hero-description {
      font-size: 1.2em;
      color: var(--text-light);
      margin-bottom: 30px;
      opacity: 0.9;
    }

    .page-55vin__cta-button {
      display: inline-block;
      background-color: var(--primary-color);
      color: var(--text-light);
      padding: 15px 30px;
      border-radius: 5px;
      font-size: 1.1em;
      font-weight: bold;
      text-decoration: none;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
    }

    .page-55vin__cta-button:hover {
      background-color: var(--button-hover);
      transform: translateY(-2px);
    }

    /* Floating Buttons */
    .page-55vin__floating-buttons {
      position: fixed;
      bottom: 20px;
      right: 20px;
      z-index: 1000;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .page-55vin__floating-button {
      background-color: var(--primary-color);
      color: var(--text-light);
      padding: 12px 20px;
      border-radius: 25px;
      font-weight: bold;
      text-align: center;
      box-shadow: 0 4px 8px var(--shadow-color);
      cursor: pointer;
      transition: background-color 0.3s ease, transform 0.2s ease;
      min-width: 100px;
      border: none;
    }

    .page-55vin__floating-button:hover {
      background-color: var(--button-hover);
      transform: translateY(-2px);
    }

    /* Game Categories / Product Display */
    .page-55vin__game-categories {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
      margin-top: 40px;
    }

    .page-55vin__category-card {
      background-color: #2a2a2a;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 5px 15px var(--shadow-color);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      display: flex;
      flex-direction: column;
      text-align: left;
    }

    .page-55vin__category-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
    }

    .page-55vin__category-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
      max-width: 100%; /* Ensure responsiveness */
      box-sizing: border-box; /* Ensure padding/border included in width */
    }

    .page-55vin__category-content {
      padding: 20px;
      flex-grow: 1;
    }

    .page-55vin__category-title {
      font-size: 1.5em;
      color: var(--accent-color);
      margin-bottom: 10px;
    }

    .page-55vin__category-description {
      font-size: 0.95em;
      color: #ccc;
    }

    /* Promotions Section */
    .page-55vin__promotions-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
      margin-top: 40px;
    }

    .page-55vin__promo-card {
      background-color: #2a2a2a;
      border-radius: 10px;
      box-shadow: 0 5px 15px var(--shadow-color);
      padding: 25px;
      text-align: left;
      transition: background-color 0.3s ease;
    }

    .page-55vin__promo-card:hover {
      background-color: #3a3a3a;
    }

    .page-55vin__promo-title {
      font-size: 1.4em;
      color: var(--primary-color);
      margin-bottom: 10px;
    }

    .page-55vin__promo-description {
      font-size: 0.95em;
      color: #ccc;
    }

    /* Providers & Payments */
    .page-55vin__logo-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin-top: 40px;
      align-items: center;
      justify-items: center;
    }

    .page-55vin__logo-item {
      background-color: #2a2a2a;
      border-radius: 8px;
      padding: 15px;
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100px;
      box-shadow: 0 3px 10px var(--shadow-color);
      transition: transform 0.2s ease;
    }

    .page-55vin__logo-item:hover {
      transform: scale(1.05);
    }

    .page-55vin__logo-image {
      max-width: 100%;
      max-height: 70px;
      height: auto;
      display: block;
      object-fit: contain;
      max-width: 100%; /* Ensure responsiveness */
      box-sizing: border-box; /* Ensure padding/border included in width */
    }

    /* About Section */
    .page-55vin__about-content {
      text-align: left;
      margin-top: 30px;
      color: #ddd;
    }

    .page-55vin__about-content p {
      margin-bottom: 15px;
      font-size: 1.05em;
    }

    .page-55vin__about-content strong {
      color: var(--accent-color);
    }

    /* FAQ Section */
    .page-55vin__faq-container {
      margin-top: 40px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-55vin__faq-item {
      background-color: #2a2a2a;
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 3px 10px var(--shadow-color);
    }

    .page-55vin__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 20px;
      background-color: #3a3a3a;
      color: var(--text-light);
      cursor: pointer;
      user-select: none;
      font-size: 1.15em;
      font-weight: bold;
      transition: background-color 0.3s ease;
    }

    .page-55vin__faq-question:hover {
      background-color: #4a4a4a;
    }

    .page-55vin__faq-question h3 {
      margin: 0;
      color: var(--accent-color);
      flex-grow: 1;
      text-align: left;
      pointer-events: none; /* Prevent h3 from blocking click on parent div */
    }

    .page-55vin__faq-toggle {
      font-size: 1.8em;
      line-height: 1;
      margin-left: 15px;
      color: var(--primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click on parent div */
    }

    .page-55vin__faq-item.active .page-55vin__faq-toggle {
      transform: rotate(45deg); /* Change + to X (or rotate to -) */
    }

    .page-55vin__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      color: #ccc;
      text-align: left;
      font-size: 1em;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
    }

    .page-55vin__faq-item.active .page-55vin__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px 20px !important;
      opacity: 1;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .page-55vin__section {
        padding: 30px 15px;
      }

      .page-55vin__section-title {
        font-size: 2em;
        margin-bottom: 25px;
      }

      .page-55vin__hero-title {
        font-size: 2.2em;
      }

      .page-55vin__hero-description {
        font-size: 1em;
      }

      .page-55vin__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-55vin__floating-buttons {
        bottom: 15px;
        right: 15px;
        flex-direction: row; /* Stack horizontally on mobile */
        gap: 8px;
        width: calc(100% - 30px);
        justify-content: center;
      }

      .page-55vin__floating-button {
        padding: 10px 15px;
        font-size: 0.9em;
        min-width: unset;
        flex: 1;
      }

      .page-55vin__game-categories,
      .page-55vin__promotions-grid,
      .page-55vin__logo-grid {
        grid-template-columns: 1fr; /* Single column on mobile */
        gap: 20px;
      }

      /* Image responsiveness */
      .page-55vin__category-image,
      .page-55vin__logo-image {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
      
      .page-55vin__logo-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      /* List item responsiveness (for FAQ specifically) */
      .page-55vin__faq-container {
        padding: 0;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      .page-55vin__faq-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      .page-55vin__faq-question {
        font-size: 1em;
        padding: 15px;
      }

      .page-55vin__faq-answer {
        padding: 15px !important;
      }

      .page-55vin__faq-toggle {
        font-size: 1.5em;
      }
    }

    @media (max-width: 480px) {
      .page-55vin__hero-title {
        font-size: 1.8em;
      }
      .page-55vin__hero-description {
        font-size: 0.9em;
      }
      .page-55vin__floating-buttons {
        flex-direction: column;
        align-items: stretch;
      }
      .page-55vin__floating-button {
        width: 100%;
      }
    }