:root {
      --primary-color: #FFD700; /* Gold */
      --secondary-color: #000000; /* Black */
      --accent-color: #FF4500; /* OrangeRed */
      --text-color-light: #F8F8F8;
      --text-color-dark: #333333;
      --bg-dark: #1A1A1A;
      --bg-medium: #2C2C2C;
      --border-color: #444444;
    }

    .page-c-c-trang-c-c-c-b-ng {
      font-family: 'Arial', sans-serif;
      color: var(--text-color-light);
      background-color: var(--bg-dark);
      line-height: 1.6;
      padding-top: 10px; /* Small aesthetic padding, assuming body padding-top is handled by shared CSS */
    }

    .page-c-c-trang-c-c-c-b-ng__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
      box-sizing: border-box;
    }

    .page-c-c-trang-c-c-c-b-ng__hero-section {
      position: relative;
      text-align: center;
      color: var(--text-color-light);
      padding: 60px 20px;
      background: var(--bg-medium);
      overflow: hidden;
      border-radius: 10px;
      margin-bottom: 40px;
    }

    .page-c-c-trang-c-c-c-b-ng__hero-image {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.4;
      z-index: 0;
    }

    .page-c-c-trang-c-c-c-b-ng__hero-content {
      position: relative;
      z-index: 1;
      max-width: 800px;
      margin: 0 auto;
    }

    .page-c-c-trang-c-c-c-b-ng__hero-content h1 {
      font-size: 2.8em;
      margin-bottom: 20px;
      color: var(--primary-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
      line-height: 1.2;
    }

    .page-c-c-trang-c-c-c-b-ng__hero-content p {
      font-size: 1.2em;
      margin-bottom: 30px;
      color: var(--text-color-light);
    }

    .page-c-c-trang-c-c-c-b-ng__cta-button {
      display: inline-block;
      background-color: var(--accent-color);
      color: var(--text-color-light);
      padding: 15px 30px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      font-size: 1.1em;
      cursor: pointer;
      border: none;
    }

    .page-c-c-trang-c-c-c-b-ng__cta-button:hover {
      background-color: #FF6347; /* Slightly darker orange */
    }

    .page-c-c-trang-c-c-c-b-ng__section {
      background-color: var(--bg-medium);
      padding: 40px;
      margin-bottom: 40px;
      border-radius: 10px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }

    .page-c-c-trang-c-c-c-b-ng__section h2,
    .page-c-c-trang-c-c-c-b-ng__section h3 {
      color: var(--primary-color);
      text-align: center;
      margin-bottom: 30px;
      font-size: 2em;
      line-height: 1.3;
    }

    .page-c-c-trang-c-c-c-b-ng__section h3 {
      font-size: 1.6em;
    }

    .page-c-c-trang-c-c-c-b-ng__text-content p {
      margin-bottom: 15px;
      color: var(--text-color-light);
      text-align: justify;
    }

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

    .page-c-c-trang-c-c-c-b-ng__feature-item {
      background-color: var(--bg-dark);
      border-radius: 8px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      border: 1px solid var(--border-color);
    }

    .page-c-c-trang-c-c-c-b-ng__feature-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
    }

    .page-c-c-trang-c-c-c-b-ng__feature-item img {
      max-width: 100%;
      height: auto;
      border-radius: 5px;
      margin-bottom: 15px;
      object-fit: cover;
    }

    .page-c-c-trang-c-c-c-b-ng__feature-item h4 {
      color: var(--primary-color);
      font-size: 1.3em;
      margin-bottom: 10px;
    }

    .page-c-c-trang-c-c-c-b-ng__feature-item p {
      color: var(--text-color-light);
      font-size: 0.95em;
    }

    .page-c-c-trang-c-c-c-b-ng__promo-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
      margin-top: 30px;
    }

    .page-c-c-trang-c-c-c-b-ng__promo-card {
      background-color: var(--bg-dark);
      border-radius: 8px;
      padding: 20px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      border: 1px solid var(--border-color);
    }

    .page-c-c-trang-c-c-c-b-ng__promo-card h4 {
      color: var(--accent-color);
      font-size: 1.4em;
      margin-bottom: 10px;
    }

    .page-c-c-trang-c-c-c-b-ng__promo-card p {
      color: var(--text-color-light);
      font-size: 0.95em;
      margin-bottom: 10px;
    }

    .page-c-c-trang-c-c-c-b-ng__promo-card .page-c-c-trang-c-c-c-b-ng__cta-button {
      padding: 10px 20px;
      font-size: 1em;
      width: 100%;
      text-align: center;
    }

    .page-c-c-trang-c-c-c-b-ng__steps-list {
      list-style: none;
      padding: 0;
      margin-top: 30px;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
    }

    .page-c-c-trang-c-c-c-b-ng__step-item {
      background-color: var(--bg-dark);
      border-radius: 8px;
      padding: 25px;
      text-align: center;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
      border: 1px solid var(--border-color);
      position: relative;
      padding-top: 60px;
    }

    .page-c-c-trang-c-c-c-b-ng__step-item::before {
      content: attr(data-step);
      position: absolute;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: var(--primary-color);
      color: var(--secondary-color);
      width: 40px;
      height: 40px;
      border-radius: 50%;
      display: flex;
      justify-content: center;
      align-items: center;
      font-weight: bold;
      font-size: 1.2em;
      z-index: 1;
    }

    .page-c-c-trang-c-c-c-b-ng__step-item h4 {
      color: var(--primary-color);
      font-size: 1.3em;
      margin-bottom: 10px;
    }

    .page-c-c-trang-c-c-c-b-ng__step-item p {
      color: var(--text-color-light);
      font-size: 0.95em;
    }

    .page-c-c-trang-c-c-c-b-ng__faq-section {
      background-color: var(--bg-medium);
      padding: 40px;
      margin-bottom: 40px;
      border-radius: 10px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }

    .page-c-c-trang-c-c-c-b-ng__faq-section h2 {
      color: var(--primary-color);
      text-align: center;
      margin-bottom: 30px;
      font-size: 2em;
    }

    .page-c-c-trang-c-c-c-b-ng__faq-item {
      background-color: var(--bg-dark);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      margin-bottom: 15px;
      overflow: hidden;
    }

    .page-c-c-trang-c-c-c-b-ng__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      user-select: none;
      background-color: var(--bg-dark);
      color: var(--primary-color);
      font-weight: bold;
      font-size: 1.1em;
      transition: background-color 0.3s ease;
    }

    .page-c-c-trang-c-c-c-b-ng__faq-question:hover {
      background-color: #3A3A3A;
    }

    .page-c-c-trang-c-c-c-b-ng__faq-question h3 {
      margin: 0;
      color: inherit;
      font-size: 1.1em;
      pointer-events: none; /* Prevent h3 from blocking click */
    }

    .page-c-c-trang-c-c-c-b-ng__faq-toggle {
      font-size: 1.5em;
      line-height: 1;
      pointer-events: none; /* Prevent toggle icon from blocking click */
      transition: transform 0.3s ease;
    }

    .page-c-c-trang-c-c-c-b-ng__faq-item.active .page-c-c-trang-c-c-c-b-ng__faq-toggle {
      transform: rotate(45deg); /* Change + to X or - */
    }

    .page-c-c-trang-c-c-c-b-ng__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      color: var(--text-color-light);
      background-color: var(--bg-medium);
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      opacity: 0;
    }

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

    .page-c-c-trang-c-c-c-b-ng__faq-answer p {
      margin-bottom: 10px;
    }

    /* Responsive Adjustments */
    @media (max-width: 768px) {
      .page-c-c-trang-c-c-c-b-ng__container {
        padding: 15px;
      }

      .page-c-c-trang-c-c-c-b-ng__hero-section {
        padding: 40px 15px;
        margin-bottom: 30px;
      }

      .page-c-c-trang-c-c-c-b-ng__hero-content h1 {
        font-size: 2em;
      }

      .page-c-c-trang-c-c-c-b-ng__hero-content p {
        font-size: 1em;
      }

      .page-c-c-trang-c-c-c-b-ng__cta-button {
        padding: 12px 25px;
        font-size: 1em;
      }

      .page-c-c-trang-c-c-c-b-ng__section {
        padding: 30px 15px;
        margin-bottom: 30px;
      }

      .page-c-c-trang-c-c-c-b-ng__section h2 {
        font-size: 1.8em;
        margin-bottom: 25px;
      }

      .page-c-c-trang-c-c-c-b-ng__section h3 {
        font-size: 1.4em;
        margin-bottom: 20px;
      }

      .page-c-c-trang-c-c-c-b-ng__features-grid,
      .page-c-c-trang-c-c-c-b-ng__promo-list,
      .page-c-c-trang-c-c-c-b-ng__steps-list {
        grid-template-columns: 1fr;
        gap: 20px;
      }

      .page-c-c-trang-c-c-c-b-ng__feature-item,
      .page-c-c-trang-c-c-c-b-ng__promo-card,
      .page-c-c-trang-c-c-c-b-ng__step-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
      }

      .page-c-c-trang-c-c-c-b-ng__faq-question {
        padding: 12px 15px;
        font-size: 1em;
      }

      .page-c-c-trang-c-c-c-b-ng__faq-question h3 {
        font-size: 1em;
      }

      .page-c-c-trang-c-c-c-b-ng__faq-answer {
        padding: 0 15px;
      }

      .page-c-c-trang-c-c-c-b-ng__faq-item.active .page-c-c-trang-c-c-c-b-ng__faq-answer {
        padding: 15px !important;
      }

      .page-c-c-trang-c-c-c-b-ng__feature-item img,
      .page-c-c-trang-c-c-c-b-ng__promo-card img,
      .page-c-c-trang-c-c-c-b-ng__step-item img {
        max-width: 100% !important;
        height: auto !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
      }
    }