.page-ththao {
  font-family: Arial, sans-serif;
  color: #1F2D3D;
  background-color: #F4F7FB;
}

.page-ththao__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.page-ththao__hero-section {
  position: relative;
  text-align: center;
  padding-top: 10px; /* Small top padding, relying on body for header offset */
  background: linear-gradient(180deg, #2F6BFF 0%, #6FA3FF 100%);
  padding-bottom: 40px;
}

.page-ththao__hero-image {
  display: block;
  width: 100%;
  max-width: 1200px;
  height: auto;
  margin: 0 auto;
  border-radius: 10px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
  object-fit: cover;
}

.page-ththao__hero-content {
  padding: 20px 0;
  max-width: 900px;
  margin: 0 auto;
}

.page-ththao__main-title {
  font-weight: bold;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #FFFFFF;
  margin-bottom: 15px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-ththao__hero-description {
  font-size: 1.1em;
  color: #FFFFFF;
  margin-bottom: 30px;
  line-height: 1.6;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-ththao__cta-button {
  display: inline-block;
  padding: 15px 30px;
  background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  color: #FFFFFF;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  min-width: 150px;
  text-align: center;
}

.page-ththao__cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.page-ththao__cta-button--centered {
  display: block;
  margin: 30px auto 0 auto;
}

.page-ththao__section-title {
  font-size: 2em;
  color: #2F6BFF;
  text-align: center;
  margin-top: 40px;
  margin-bottom: 30px;
  font-weight: bold;
}

.page-ththao__introduction, .page-ththao__why-choose, .page-ththao__faq {
  padding: 40px 0;
  background-color: #FFFFFF;
  margin-bottom: 20px;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.page-ththao__features, .page-ththao__guide {
  padding: 40px 0;
  margin-bottom: 20px;
}

.page-ththao__text-content {
  font-size: 1.1em;
  line-height: 1.8;
  margin-bottom: 20px;
  color: #1F2D3D;
}

.page-ththao__text-content a {
  color: #2F6BFF;
  text-decoration: none;
  font-weight: bold;
}

.page-ththao__text-content a:hover {
  text-decoration: underline;
}

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

.page-ththao__feature-item {
  background-color: #FFFFFF;
  border-radius: 10px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease;
}

.page-ththao__feature-item:hover {
  transform: translateY(-5px);
}

.page-ththao__feature-image {
  width: 100%;
  height: auto;
  max-width: 400px;
  max-height: 300px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 15px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-ththao__feature-title {
  font-size: 1.4em;
  color: #000000;
  margin-bottom: 10px;
  font-weight: bold;
}

.page-ththao__feature-description {
  font-size: 0.95em;
  color: #1F2D3D;
  line-height: 1.6;
}

.page-ththao__guide-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
}

.page-ththao__guide-item {
  background-color: #FFFFFF;
  border: 1px solid #D6E2FF;
  border-radius: 8px;
  padding: 20px 25px;
  margin-bottom: 15px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-ththao__guide-step-title {
  font-size: 1.25em;
  color: #2F6BFF;
  font-weight: bold;
  margin-bottom: 5px;
}

.page-ththao__guide-item p {
  font-size: 1em;
  line-height: 1.7;
  color: #1F2D3D;
}

.page-ththao__advantage-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 15px;
}

.page-ththao__advantage-item {
  background-color: #F4F7FB;
  border-left: 5px solid #2F6BFF;
  padding: 15px 20px;
  border-radius: 5px;
  font-size: 1.05em;
  color: #1F2D3D;
}

.page-ththao__faq {
  background-color: #F4F7FB;
  border-radius: 10px;
  box-shadow: none;
}

.page-ththao__accordion-item {
  background-color: #FFFFFF;
  border: 1px solid #D6E2FF;
  border-radius: 8px;
  margin-bottom: 10px;
  overflow: hidden;
}

.page-ththao__accordion-title {
  font-size: 1.15em;
  color: #000000;
  padding: 15px 20px;
  cursor: pointer;
  font-weight: bold;
  position: relative;
  margin: 0;
  background-color: #F4F7FB;
  border-bottom: 1px solid #D6E2FF;
}

.page-ththao__accordion-title::after {
  content: '+';
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5em;
  transition: transform 0.3s ease;
}

.page-ththao__accordion-title.active::after {
  content: '-';
  transform: translateY(-50%) rotate(180deg);
}

.page-ththao__accordion-content {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.page-ththao__accordion-content.active {
  max-height: 200px; /* Adjust as needed */
  padding: 15px 20px;
}

.page-ththao__accordion-content p {
  margin: 0;
  line-height: 1.7;
  color: #1F2D3D;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .page-ththao__container {
    padding: 15px;
  }

  .page-ththao__main-title {
    font-size: 2em; /* Use em to scale relative to root */
  }

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

  .page-ththao__section-title {
    font-size: 1.6em;
    margin-top: 30px;
    margin-bottom: 20px;
  }

  .page-ththao__feature-list {
    grid-template-columns: 1fr;
  }

  .page-ththao__feature-image {
    max-width: 100%;
    width: 100%; /* Ensure mobile images don't cause overflow */
    height: auto;
  }

  .page-ththao__guide-item {
    padding: 15px;
  }

  .page-ththao__guide-step-title {
    font-size: 1.1em;
  }

  .page-ththao__advantage-item {
    font-size: 1em;
  }

  .page-ththao__accordion-title {
    font-size: 1em;
    padding: 12px 15px;
  }

  .page-ththao__accordion-title::after {
    right: 15px;
    font-size: 1.2em;
  }

  /* IMPORTANT: Ensure all content images are responsive and don't overflow */
  .page-ththao img {
    max-width: 100% !important;
    height: auto !important;
  }
}

@media (max-width: 480px) {
  .page-ththao__main-title {
    font-size: 1.8em;
  }
  .page-ththao__cta-button {
    padding: 12px 20px;
    font-size: 0.9em;
  }
  .page-ththao__hero-section {
    padding-bottom: 20px;
  }
  .page-ththao__hero-content {
    padding: 10px 0;
  }
}