.page-doi-tac-lien-ket {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333333; /* Default text color for light backgrounds */
}

.page-doi-tac-lien-ket__hero-section {
  padding-top: 10px; /* Small top padding as shared.css handles body padding */
  padding-bottom: 60px;
  background-color: #F5F7FA; /* Background color */
}

.page-doi-tac-lien-ket__hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px;
}

.page-doi-tac-lien-ket__hero-content {
  flex: 1 1 45%;
  min-width: 300px;
}

.page-doi-tac-lien-ket__hero-title {
  font-size: clamp(2em, 4vw, 2.8em);
  color: #E53935;
  margin-bottom: 20px;
  font-weight: 700;
  line-height: 1.2;
}

.page-doi-tac-lien-ket__hero-description {
  font-size: 1.1em;
  color: #333333;
  margin-bottom: 30px;
}

.page-doi-tac-lien-ket__hero-image {
  flex: 1 1 45%;
  min-width: 300px;
  text-align: center;
}

.page-doi-tac-lien-ket__hero-side-image {
  max-width: 600px;
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.page-doi-tac-lien-ket__cta-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.page-doi-tac-lien-ket__cta-buttons--center {
  justify-content: center;
  margin-top: 40px;
}

.page-doi-tac-lien-ket__btn-primary,
.page-doi-tac-lien-ket__btn-secondary {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s ease;
  text-align: center;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-doi-tac-lien-ket__btn-primary {
  background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
  color: #ffffff;
  border: 2px solid transparent;
  box-shadow: 0 4px 15px rgba(229, 57, 53, 0.4);
}

.page-doi-tac-lien-ket__btn-primary:hover {
  background: linear-gradient(180deg, #E53935 0%, #FF5A4F 100%);
  box-shadow: 0 6px 20px rgba(229, 57, 53, 0.6);
}

.page-doi-tac-lien-ket__btn-secondary {
  background: #ffffff;
  color: #E53935;
  border: 2px solid #E53935;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.page-doi-tac-lien-ket__btn-secondary:hover {
  background: #E53935;
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(229, 57, 53, 0.2);
}

.page-doi-tac-lien-ket__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  box-sizing: border-box;
}

.page-doi-tac-lien-ket__section-title {
  font-size: 2.2em;
  color: #E53935;
  text-align: center;
  margin-bottom: 25px;
  font-weight: 700;
}

.page-doi-tac-lien-ket__section-intro {
  font-size: 1.1em;
  color: #555555;
  text-align: center;
  margin-bottom: 50px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-doi-tac-lien-ket__benefits-section {
  padding: 80px 0;
  background-color: #F5F7FA;
  color: #333333;
}

.page-doi-tac-lien-ket__benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-doi-tac-lien-ket__benefit-card {
  background: #ffffff;
  padding: 30px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-doi-tac-lien-ket__benefit-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.page-doi-tac-lien-ket__benefit-icon {
  width: 100%;
  max-width: 200px;
  height: auto;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-doi-tac-lien-ket__benefit-title {
  font-size: 1.4em;
  color: #E53935;
  margin-bottom: 10px;
  font-weight: 600;
}

.page-doi-tac-lien-ket__benefit-text {
  font-size: 1em;
  color: #555555;
}

.page-doi-tac-lien-ket__how-to-join-section {
  padding: 80px 0;
  background-color: #E53935; /* Dark background */
  color: #ffffff; /* Light text */
}

.page-doi-tac-lien-ket__how-to-join-section .page-doi-tac-lien-ket__section-title,
.page-doi-tac-lien-ket__how-to-join-section .page-doi-tac-lien-ket__section-intro {
  color: #ffffff;
}

.page-doi-tac-lien-ket__steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-doi-tac-lien-ket__step-card {
  background: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.page-doi-tac-lien-ket__step-number {
  display: inline-flex;
  width: 50px;
  height: 50px;
  background: #FF5A4F;
  color: #ffffff;
  border-radius: 50%;
  justify-content: center;
  align-items: center;
  font-size: 1.8em;
  font-weight: bold;
  margin-bottom: 20px;
}

.page-doi-tac-lien-ket__step-title {
  font-size: 1.5em;
  color: #ffffff;
  margin-bottom: 10px;
  font-weight: 600;
}

.page-doi-tac-lien-ket__step-text {
  font-size: 1em;
  color: #f0f0f0;
}

.page-doi-tac-lien-ket__faq-section {
  padding: 80px 0;
  background-color: #F5F7FA;
  color: #333333;
}

.page-doi-tac-lien-ket__faq-list {
  max-width: 900px;
  margin: 50px auto 0 auto;
}

.page-doi-tac-lien-ket__faq-item {
  background: #ffffff;
  margin-bottom: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.page-doi-tac-lien-ket__faq-item summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.15em;
  font-weight: 600;
  color: #333333;
  cursor: pointer;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

.page-doi-tac-lien-ket__faq-item summary::-webkit-details-marker {
  display: none;
}

.page-doi-tac-lien-ket__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.page-doi-tac-lien-ket__faq-qtext {
  flex-grow: 1;
  color: #333333;
}

.page-doi-tac-lien-ket__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
  color: #E53935;
  transition: transform 0.3s ease;
}

.page-doi-tac-lien-ket__faq-item[open] .page-doi-tac-lien-ket__faq-toggle {
  transform: rotate(45deg);
}

.page-doi-tac-lien-ket__faq-answer {
  padding: 0 25px 20px 25px;
  font-size: 1em;
  color: #555555;
  line-height: 1.7;
}

.page-doi-tac-lien-ket__contact-cta {
  background-color: #E53935; /* Main brand color */
  padding: 80px 0;
  text-align: center;
  color: #ffffff;
}

.page-doi-tac-lien-ket__contact-cta-inner {
  max-width: 800px;
  margin: 0 auto;
}

.page-doi-tac-lien-ket__contact-title {
  font-size: 2.5em;
  color: #ffffff;
  margin-bottom: 20px;
  font-weight: 700;
}

.page-doi-tac-lien-ket__contact-description {
  font-size: 1.2em;
  color: #f0f0f0;
  margin-bottom: 40px;
}

.page-doi-tac-lien-ket img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
  .page-doi-tac-lien-ket {
    font-size: 15px;
    line-height: 1.5;
  }

  .page-doi-tac-lien-ket__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
  }

  .page-doi-tac-lien-ket__hero-container {
    flex-direction: column;
    padding: 30px 15px;
    gap: 30px;
  }

  .page-doi-tac-lien-ket__hero-content,
  .page-doi-tac-lien-ket__hero-image {
    flex: 1 1 100%;
    min-width: unset;
  }

  .page-doi-tac-lien-ket__hero-title {
    font-size: clamp(1.8em, 7vw, 2.5em);
    text-align: center;
  }

  .page-doi-tac-lien-ket__hero-description {
    font-size: 1em;
    text-align: center;
  }

  .page-doi-tac-lien-ket__cta-buttons {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  .page-doi-tac-lien-ket__btn-primary,
  .page-doi-tac-lien-ket__btn-secondary {
    max-width: 100% !important;
    width: 100% !important;
    padding: 12px 20px;
    font-size: 1em;
  }

  .page-doi-tac-lien-ket__container {
    padding: 30px 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-doi-tac-lien-ket__section-title {
    font-size: 1.8em;
    margin-bottom: 20px;
  }

  .page-doi-tac-lien-ket__section-intro {
    font-size: 0.95em;
    margin-bottom: 30px;
  }

  .page-doi-tac-lien-ket__benefits-section,
  .page-doi-tac-lien-ket__how-to-join-section,
  .page-doi-tac-lien-ket__faq-section,
  .page-doi-tac-lien-ket__contact-cta {
    padding: 50px 0;
  }

  .page-doi-tac-lien-ket__benefits-grid,
  .page-doi-tac-lien-ket__steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-doi-tac-lien-ket__benefit-card,
  .page-doi-tac-lien-ket__step-card {
    padding: 25px;
  }

  .page-doi-tac-lien-ket__benefit-title,
  .page-doi-tac-lien-ket__step-title {
    font-size: 1.2em;
  }

  .page-doi-tac-lien-ket__faq-list {
    margin-top: 30px;
  }

  .page-doi-tac-lien-ket__faq-item summary {
    padding: 15px 20px;
    font-size: 1em;
  }

  .page-doi-tac-lien-ket__faq-answer {
    padding: 0 20px 15px 20px;
    font-size: 0.9em;
  }

  .page-doi-tac-lien-ket__contact-title {
    font-size: 1.8em;
  }

  .page-doi-tac-lien-ket__contact-description {
    font-size: 1em;
  }

  .page-doi-tac-lien-ket img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-doi-tac-lien-ket__section,
  .page-doi-tac-lien-ket__card,
  .page-doi-tac-lien-ket__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-doi-tac-lien-ket__cta-buttons,
  .page-doi-tac-lien-ket__button-group,
  .page-doi-tac-lien-ket__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
  }
  .page-doi-tac-lien-ket__cta-buttons {
    flex-direction: column;
  }
}