:root {
      --page-trang-c-c-c-th-thao-uy-t-n-primary-bg: #1a1a1a;
      --page-trang-c-c-c-th-thao-uy-t-n-secondary-bg: #2a2a2a;
      --page-trang-c-c-c-th-thao-uy-t-n-text-color: #f0f0f0;
      --page-trang-c-c-c-th-thao-uy-t-n-accent-color: #e44d26; /* Orange-red */
      --page-trang-c-c-c-th-thao-uy-t-n-light-accent: #ff7f50; /* Coral for hover */
      --page-trang-c-c-c-th-thao-uy-t-n-border-color: #3a3a3a;
      --page-trang-c-c-c-th-thao-uy-t-n-success-color: #4CAF50; /* Green */
      --page-trang-c-c-c-th-thao-uy-t-n-shadow-color: rgba(0, 0, 0, 0.5);
    }

    .page-trang-c-c-c-th-thao-uy-t-n {
      font-family: 'Arial', sans-serif;
      color: var(--page-trang-c-c-c-th-thao-uy-t-n-text-color);
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-primary-bg);
      line-height: 1.6;
      padding-top: var(--header-offset, 122px); /* Fallback for header offset */
    }

    .page-trang-c-c-c-th-thao-uy-t-n__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__hero-section {
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-secondary-bg);
      text-align: center;
      padding: 10px 0 40px 0; /* Adjusted padding-top as body handles offset */
      position: relative;
      overflow: hidden;
      border-bottom: 2px solid var(--page-trang-c-c-c-th-thao-uy-t-n-border-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__hero-background {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.3;
      z-index: 0;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__hero-content {
      position: relative;
      z-index: 1;
      padding: 20px;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__main-heading {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: var(--page-trang-c-c-c-th-thao-uy-t-n-accent-color);
      text-shadow: 2px 2px 4px var(--page-trang-c-c-c-th-thao-uy-t-n-shadow-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__sub-heading {
      font-size: 1.5em;
      margin-bottom: 25px;
      color: var(--page-trang-c-c-c-th-thao-uy-t-n-text-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__cta-button {
      display: inline-block;
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-accent-color);
      color: var(--page-trang-c-c-c-th-thao-uy-t-n-text-color);
      padding: 15px 30px;
      border-radius: 8px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease, transform 0.2s ease;
      border: none;
      cursor: pointer;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__cta-button:hover {
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-light-accent);
      transform: translateY(-2px);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__section {
      padding: 40px 0;
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-primary-bg);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__section:nth-of-type(even) {
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-secondary-bg);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__section-title {
      font-size: 2.2em;
      text-align: center;
      margin-bottom: 30px;
      color: var(--page-trang-c-c-c-th-thao-uy-t-n-accent-color);
      text-shadow: 1px 1px 2px var(--page-trang-c-c-c-th-thao-uy-t-n-shadow-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 30px;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__feature-card {
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-secondary-bg);
      padding: 25px;
      border-radius: 10px;
      box-shadow: 0 4px 8px var(--page-trang-c-c-c-th-thao-uy-t-n-shadow-color);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--page-trang-c-c-c-th-thao-uy-t-n-border-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__feature-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 12px var(--page-trang-c-c-c-th-thao-uy-t-n-shadow-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__feature-icon {
      width: 80px;
      height: 80px;
      margin-bottom: 15px;
      display: block;
      margin-left: auto;
      margin-right: auto;
      border-radius: 50%;
      object-fit: cover;
      border: 3px solid var(--page-trang-c-c-c-th-thao-uy-t-n-accent-color);
      max-width: 100%; /* Responsive image */
      height: auto; /* Responsive image */
      box-sizing: border-box; /* Responsive image */
    }

    .page-trang-c-c-c-th-thao-uy-t-n__feature-title {
      font-size: 1.5em;
      margin-bottom: 10px;
      color: var(--page-trang-c-c-c-th-thao-uy-t-n-success-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__product-gallery {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__product-item {
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-primary-bg);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 8px var(--page-trang-c-c-c-th-thao-uy-t-n-shadow-color);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--page-trang-c-c-c-th-thao-uy-t-n-border-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__product-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 12px var(--page-trang-c-c-c-th-thao-uy-t-n-shadow-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__product-image-wrapper {
      width: 100%;
      height: 220px;
      overflow: hidden;
      box-sizing: border-box;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__product-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
      max-width: 100%; /* Responsive image */
      height: auto; /* Responsive image */
      box-sizing: border-box; /* Responsive image */
    }

    .page-trang-c-c-c-th-thao-uy-t-n__product-item:hover .page-trang-c-c-c-th-thao-uy-t-n__product-image {
      transform: scale(1.05);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__product-info {
      padding: 20px;
      text-align: center;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__product-title {
      font-size: 1.3em;
      margin-bottom: 10px;
      color: var(--page-trang-c-c-c-th-thao-uy-t-n-accent-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__product-description {
      font-size: 0.95em;
      color: var(--page-trang-c-c-c-th-thao-uy-t-n-text-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__faq-section {
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-primary-bg);
      padding: 40px 0;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__faq-list {
      list-style: none;
      padding: 0;
      margin-top: 30px;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__faq-item {
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-secondary-bg);
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid var(--page-trang-c-c-c-th-thao-uy-t-n-border-color);
      box-shadow: 0 2px 5px var(--page-trang-c-c-c-th-thao-uy-t-n-shadow-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 20px;
      cursor: pointer;
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-accent-color);
      color: var(--page-trang-c-c-c-th-thao-uy-t-n-text-color);
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease;
      user-select: none;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__faq-question:hover {
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-light-accent);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: var(--page-trang-c-c-c-th-thao-uy-t-n-text-color);
      pointer-events: none; /* Prevents h3 from blocking click event */
    }

    .page-trang-c-c-c-th-thao-uy-t-n__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      pointer-events: none; /* Prevents toggle icon from blocking click event */
    }

    .page-trang-c-c-c-th-thao-uy-t-n__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-secondary-bg);
      color: var(--page-trang-c-c-c-th-thao-uy-t-n-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;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__faq-item.active .page-trang-c-c-c-th-thao-uy-t-n__faq-answer {
      max-height: 2000px !important; /* Sufficiently large */
      padding: 20px !important;
      opacity: 1;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__faq-item.active .page-trang-c-c-c-th-thao-uy-t-n__faq-question {
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-light-accent);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__floating-buttons {
      position: fixed;
      bottom: 20px;
      right: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 1000;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__floating-button {
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-accent-color);
      color: var(--page-trang-c-c-c-th-thao-uy-t-n-text-color);
      padding: 12px 20px;
      border-radius: 50px;
      text-decoration: none;
      font-weight: bold;
      font-size: 1em;
      box-shadow: 0 4px 8px var(--page-trang-c-c-c-th-thao-uy-t-n-shadow-color);
      transition: background-color 0.3s ease, transform 0.2s ease;
      text-align: center;
      min-width: 100px;
    }

    .page-trang-c-c-c-th-thao-uy-t-n__floating-button--login {
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-success-color);
    }

    .page-trang-c-c-c-th-thao-uy-t-n__floating-button:hover {
      background-color: var(--page-trang-c-c-c-th-thao-uy-t-n-light-accent);
      transform: translateY(-2px);
    }
    
    .page-trang-c-c-c-th-thao-uy-t-n__floating-button--login:hover {
      background-color: #66BB6A; /* Lighter green */
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .page-trang-c-c-c-th-thao-uy-t-n__container {
        padding: 15px;
      }

      .page-trang-c-c-c-th-thao-uy-t-n__main-heading {
        font-size: 2.2em;
      }

      .page-trang-c-c-c-th-thao-uy-t-n__sub-heading {
        font-size: 1.2em;
      }

      .page-trang-c-c-c-th-thao-uy-t-n__section-title {
        font-size: 1.8em;
      }

      .page-trang-c-c-c-th-thao-uy-t-n__features-grid,
      .page-trang-c-c-c-th-thao-uy-t-n__product-gallery {
        grid-template-columns: 1fr;
      }

      .page-trang-c-c-c-th-thao-uy-t-n__feature-card,
      .page-trang-c-c-c-th-thao-uy-t-n__product-item {
        margin: 0 auto;
        width: 100%;
        max-width: 400px;
      }
      
      .page-trang-c-c-c-th-thao-uy-t-n__faq-question {
        font-size: 1em;
        padding: 15px;
      }

      .page-trang-c-c-c-th-thao-uy-t-n__faq-question h3 {
        font-size: 1em;
      }

      .page-trang-c-c-c-th-thao-uy-t-n__faq-answer {
        padding: 0 15px;
      }

      .page-trang-c-c-c-th-thao-uy-t-n__faq-item.active .page-trang-c-c-c-th-thao-uy-t-n__faq-answer {
        padding: 15px !important;
      }

      .page-trang-c-c-c-th-thao-uy-t-n__floating-buttons {
        bottom: 15px;
        right: 15px;
        flex-direction: row; /* Buttons side-by-side on mobile */
        gap: 8px;
        width: calc(100% - 30px);
        justify-content: center;
      }
      
      .page-trang-c-c-c-th-thao-uy-t-n__floating-button {
        padding: 10px 15px;
        font-size: 0.9em;
        min-width: unset;
        flex: 1;
      }

      /* Ensure all images are responsive on mobile */
      .page-trang-c-c-c-th-thao-uy-t-n img {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
      }
      .page-trang-c-c-c-th-thao-uy-t-n__product-image-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
        box-sizing: border-box !important;
      }
      .page-trang-c-c-c-th-thao-uy-t-n__feature-icon {
        width: 60px;
        height: 60px;
      }
    }

    @media (max-width: 480px) {
      .page-trang-c-c-c-th-thao-uy-t-n__main-heading {
        font-size: 1.8em;
      }
      .page-trang-c-c-c-th-thao-uy-t-n__sub-heading {
        font-size: 1em;
      }
      .page-trang-c-c-c-th-thao-uy-t-n__cta-button {
        padding: 12px 20px;
        font-size: 1em;
      }
      .page-trang-c-c-c-th-thao-uy-t-n__floating-buttons {
        flex-direction: column; /* Stack buttons vertically on very small screens */
        align-items: center;
        right: 10px;
        left: 10px;
        width: calc(100% - 20px);
      }
      .page-trang-c-c-c-th-thao-uy-t-n__floating-button {
        width: 100%;
        max-width: 200px;
      }
    }