:root {
      --page-tnfund-primary-color: #e44d26; /* Cam đỏ */
      --page-tnfund-secondary-color: #333333; /* Xám đậm */
      --page-tnfund-accent-color: #f7b036; /* Vàng cam */
      --page-tnfund-text-color: #ffffff; /* Trắng */
      --page-tnfund-dark-text-color: #000000; /* Đen */
      --page-tnfund-bg-dark: #1a1a1a; /* Nền rất tối */
      --page-tnfund-bg-light: #2c2c2c; /* Nền tối vừa */
      --page-tnfund-border-color: #444444; /* Viền xám */
    }

    .page-tnfund {
      font-family: 'Arial', sans-serif;
      color: var(--page-tnfund-text-color);
      background-color: var(--page-tnfund-bg-dark);
      line-height: 1.6;
      overflow-x: hidden;
    }

    .page-tnfund__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
      box-sizing: border-box;
    }

    .page-tnfund__section-title {
      font-size: 2.5em;
      color: var(--page-tnfund-accent-color);
      text-align: center;
      margin-bottom: 40px;
      padding-top: 20px;
      position: relative;
      text-transform: uppercase;
    }

    .page-tnfund__section-title::after {
      content: '';
      display: block;
      width: 80px;
      height: 4px;
      background-color: var(--page-tnfund-primary-color);
      margin: 10px auto 0;
      border-radius: 2px;
    }

    .page-tnfund__text-content {
      font-size: 1.1em;
      text-align: center;
      margin-bottom: 30px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      color: #cccccc;
    }

    /* Hero Section */
    .page-tnfund__hero-section {
      background: linear-gradient(135deg, var(--page-tnfund-bg-dark) 0%, var(--page-tnfund-secondary-color) 100%);
      padding: 10px 0 60px; /* Adjust for fixed header */
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      position: relative;
      overflow: hidden;
      min-height: 70vh;
    }

    .page-tnfund__hero-content {
      z-index: 1;
      max-width: 900px;
      padding: 20px;
    }

    .page-tnfund__hero-title {
      font-size: 3.5em;
      color: var(--page-tnfund-primary-color);
      margin-bottom: 20px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
      line-height: 1.2;
    }

    .page-tnfund__hero-description {
      font-size: 1.3em;
      color: #e0e0e0;
      margin-bottom: 30px;
      line-height: 1.5;
    }

    .page-tnfund__hero-cta-button,
    .page-tnfund__cta-button-link {
      display: inline-block;
      background-color: var(--page-tnfund-accent-color);
      color: var(--page-tnfund-dark-text-color);
      padding: 15px 40px;
      border-radius: 50px;
      text-decoration: none;
      font-size: 1.2em;
      font-weight: bold;
      transition: background-color 0.3s ease, transform 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .page-tnfund__hero-cta-button:hover,
    .page-tnfund__cta-button-link:hover {
      background-color: var(--page-tnfund-primary-color);
      transform: translateY(-3px);
    }

    .page-tnfund__hero-image {
      max-width: 100%;
      height: auto;
      display: block;
      margin-top: 40px;
      border-radius: 15px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
      z-index: 0;
    }

    /* About Section */
    .page-tnfund__about-section {
      background-color: var(--page-tnfund-bg-light);
      padding: 80px 0;
    }

    .page-tnfund__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 50px;
    }

    .page-tnfund__feature-item {
      background-color: var(--page-tnfund-secondary-color);
      padding: 30px;
      border-radius: 10px;
      text-align: center;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
      box-sizing: border-box; /* Required for list items */
    }

    .page-tnfund__feature-item:hover {
      transform: translateY(-10px);
    }

    .page-tnfund__feature-icon {
      width: 150px; /* Increased size, min 200px requirement applies to actual image, not this display size */
      height: auto;
      margin-bottom: 20px;
      max-width: 100%;
    }

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

    .page-tnfund__feature-description {
      color: #b0b0b0;
    }

    /* Games Section */
    .page-tnfund__games-section {
      padding: 80px 0;
      background-color: var(--page-tnfund-bg-dark);
    }

    .page-tnfund__game-categories-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 50px;
    }

    .page-tnfund__game-card {
      background-color: var(--page-tnfund-secondary-color);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
      box-sizing: border-box; /* Required for list items */
    }

    .page-tnfund__game-card:hover {
      transform: translateY(-10px);
    }

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

    .page-tnfund__game-title {
      font-size: 1.6em;
      color: var(--page-tnfund-primary-color);
      padding: 15px 20px 5px;
      text-align: center;
    }

    .page-tnfund__game-description {
      font-size: 0.95em;
      color: #b0b0b0;
      padding: 0 20px 20px;
      text-align: center;
    }

    /* Promotions Section */
    .page-tnfund__promotions-section {
      background-color: var(--page-tnfund-bg-light);
      padding: 80px 0;
    }

    .page-tnfund__promo-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 50px;
    }

    .page-tnfund__promo-item {
      background-color: var(--page-tnfund-secondary-color);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease;
      box-sizing: border-box; /* Required for list items */
    }

    .page-tnfund__promo-item:hover {
      transform: translateY(-10px);
    }

    .page-tnfund__promo-image {
      width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
      max-width: 100%;
    }

    .page-tnfund__promo-title {
      font-size: 1.6em;
      color: var(--page-tnfund-accent-color);
      padding: 15px 20px 5px;
      text-align: center;
    }

    .page-tnfund__promo-description {
      font-size: 0.95em;
      color: #b0b0b0;
      padding: 0 20px 20px;
      text-align: center;
    }

    /* FAQ Section */
    .page-tnfund__faq-section {
      padding: 80px 0;
      background-color: var(--page-tnfund-bg-dark);
    }

    .page-tnfund__faq-list {
      margin-top: 50px;
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
    }

    .page-tnfund__faq-item {
      margin-bottom: 15px;
      border: 1px solid var(--page-tnfund-border-color);
      border-radius: 8px;
      overflow: hidden;
      background-color: var(--page-tnfund-secondary-color);
      box-sizing: border-box; /* Required for list items */
    }

    .page-tnfund__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 25px;
      background-color: var(--page-tnfund-secondary-color);
      cursor: pointer;
      user-select: none;
      font-size: 1.2em;
      font-weight: bold;
      color: var(--page-tnfund-text-color);
      transition: background-color 0.3s ease;
    }

    .page-tnfund__faq-question:hover {
      background-color: #444444;
    }

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

    .page-tnfund__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      transition: transform 0.3s ease;
      color: var(--page-tnfund-accent-color);
      pointer-events: none; /* Prevent toggle from blocking click */
    }

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

    .page-tnfund__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 25px;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
      color: #cccccc;
      background-color: #2a2a2a;
    }

    .page-tnfund__faq-item.active .page-tnfund__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px 25px !important;
      opacity: 1;
    }

    .page-tnfund__faq-answer p {
      margin: 0;
      padding-bottom: 10px;
    }

    /* Call to Action Bottom Section */
    .page-tnfund__cta-bottom-section {
      background: linear-gradient(45deg, var(--page-tnfund-primary-color) 0%, var(--page-tnfund-accent-color) 100%);
      padding: 60px 0;
      text-align: center;
    }

    .page-tnfund__cta-bottom-section .page-tnfund__section-title {
      color: var(--page-tnfund-dark-text-color);
      margin-bottom: 20px;
    }

    .page-tnfund__cta-bottom-section .page-tnfund__section-title::after {
      background-color: var(--page-tnfund-dark-text-color);
    }

    .page-tnfund__cta-bottom-section .page-tnfund__text-content {
      color: var(--page-tnfund-dark-text-color);
      margin-bottom: 40px;
    }

    /* Responsive adjustments */
    @media (max-width: 992px) {
      .page-tnfund__hero-title {
        font-size: 2.8em;
      }
      .page-tnfund__hero-description {
        font-size: 1.1em;
      }
      .page-tnfund__section-title {
        font-size: 2em;
      }
    }

    @media (max-width: 768px) {
      .page-tnfund__hero-section {
        padding-bottom: 40px;
      }
      .page-tnfund__hero-title {
        font-size: 2.2em;
      }
      .page-tnfund__hero-description {
        font-size: 1em;
      }
      .page-tnfund__hero-cta-button,
      .page-tnfund__cta-button-link {
        padding: 12px 30px;
        font-size: 1em;
      }
      .page-tnfund__section-title {
        font-size: 1.8em;
        margin-bottom: 30px;
      }
      .page-tnfund__text-content {
        font-size: 0.95em;
      }

      /* List item responsive requirements */
      .page-tnfund__features-grid,
      .page-tnfund__game-categories-grid,
      .page-tnfund__promo-list {
        grid-template-columns: 1fr;
        padding: 0 10px !important; /* Ensure container padding */
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }

      .page-tnfund__feature-item,
      .page-tnfund__game-card,
      .page-tnfund__promo-item,
      .page-tnfund__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 to prevent overflow */
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }

      .page-tnfund__faq-question {
        padding: 15px 20px;
        font-size: 1.1em;
      }
      .page-tnfund__faq-title {
        font-size: 1.1em;
      }
      .page-tnfund__faq-answer {
        padding: 0 20px;
      }
      .page-tnfund__faq-item.active .page-tnfund__faq-answer {
        padding: 15px 20px !important;
      }
    }

    @media (max-width: 480px) {
      .page-tnfund__hero-title {
        font-size: 1.8em;
      }
      .page-tnfund__hero-description {
        font-size: 0.9em;
      }
      .page-tnfund__hero-cta-button,
      .page-tnfund__cta-button-link {
        padding: 10px 25px;
        font-size: 0.9em;
      }
      .page-tnfund__section-title {
        font-size: 1.5em;
      }
      .page-tnfund__feature-title,
      .page-tnfund__game-title,
      .page-tnfund__promo-title {
        font-size: 1.3em;
      }
    }

    /* Image responsive default */
    .page-tnfund img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    /* Ensure all images are responsive on mobile */
    @media (max-width: 768px) {
      .page-tnfund img {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
      .page-tnfund__hero-image,
      .page-tnfund__feature-icon,
      .page-tnfund__game-image,
      .page-tnfund__promo-image {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
      }
    }