.page-su-kien {
  font-family: Arial, sans-serif;
  background-color: #0D0E12;
  color: #FFF3E6;
  line-height: 1.6;
  padding-bottom: 50px;
}

.page-su-kien__container {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-su-kien__hero-section {
  padding-top: 10px;
  padding-bottom: 60px;
  text-align: center;
  background-color: #17191F;
  border-bottom: 2px solid #A84F0C;
}

.page-su-kien__main-title {
  font-size: 2.8em;
  font-weight: bold;
  color: #FFB04D;
  margin-bottom: 20px;
  line-height: 1.2;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-su-kien__intro-text {
  font-size: 1.1em;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-su-kien__cta-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-su-kien__btn-primary,
.page-su-kien__btn-secondary {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.05em;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-su-kien__btn-primary {
  background: linear-gradient(180deg, #FFA53A 0%, #D96800 100%);
  color: #FFF3E6;
  border: none;
  box-shadow: 0 4px 15px rgba(255, 165, 58, 0.4);
}

.page-su-kien__btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

.page-su-kien__btn-secondary {
  background-color: transparent;
  color: #FFA53A;
  border: 2px solid #FFA53A;
}

.page-su-kien__btn-secondary:hover {
  background-color: #FFA53A;
  color: #17191F;
}

.page-su-kien__content-section {
  padding: 60px 0;
}

.page-su-kien__content-section:nth-child(even) {
  background-color: #17191F;
}

.page-su-kien__section-title {
  font-size: 2.2em;
  color: #FFB04D;
  text-align: center;
  margin-bottom: 40px;
  font-weight: bold;
}

.page-su-kien__text-block {
  font-size: 1.05em;
  margin-bottom: 20px;
  color: #FFF3E6;
  text-align: justify;
}

.page-su-kien__text-block a {
  color: #FFA53A;
  text-decoration: none;
  font-weight: bold;
}

.page-su-kien__text-block a:hover {
  text-decoration: underline;
}

.page-su-kien__image-figure {
  margin: 40px auto;
  text-align: center;
  max-width: 800px;
}

.page-su-kien__image-figure img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  margin: 0 auto;
}

.page-su-kien__image-caption {
  font-size: 0.9em;
  color: #A84F0C;
  margin-top: 15px;
  font-style: italic;
}

.page-su-kien__card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-su-kien__card {
  background-color: #17191F;
  border: 1px solid #A84F0C;
  border-radius: 10px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-su-kien__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.page-su-kien__card-title {
  font-size: 1.5em;
  color: #FFB04D;
  margin-bottom: 20px;
  font-weight: bold;
}

.page-su-kien__card-text {
  font-size: 0.95em;
  color: #FFF3E6;
  margin-bottom: 25px;
  flex-grow: 1;
  text-align: justify;
}

.page-su-kien__card-link {
  display: inline-block;
  background: linear-gradient(180deg, #FFA53A 0%, #D96800 100%);
  color: #FFF3E6;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  font-size: 0.9em;
  transition: all 0.3s ease;
}

.page-su-kien__card-link:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.page-su-kien__call-to-action-text {
  text-align: center;
  margin-top: 50px;
  font-size: 1.1em;
  font-weight: bold;
  color: #FFB04D;
}

.page-su-kien__how-to-join .page-su-kien__step-list {
  list-style: none;
  padding: 0;
  counter-reset: step-counter;
}

.page-su-kien__how-to-join .page-su-kien__step-item {
  background-color: #17191F;
  border: 1px solid #A84F0C;
  border-radius: 8px;
  padding: 25px;
  margin-bottom: 20px;
  position: relative;
  padding-left: 70px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.page-su-kien__how-to-join .page-su-kien__step-item::before {
  counter-increment: step-counter;
  content: "Bước " counter(step-counter);
  position: absolute;
  left: 20px;
  top: 25px;
  background-color: #FFA53A;
  color: #17191F;
  font-weight: bold;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9em;
}

.page-su-kien__how-to-join .page-su-kien__step-title {
  font-size: 1.3em;
  color: #FFB04D;
  margin-bottom: 10px;
}

.page-su-kien__how-to-join .page-su-kien__step-description {
  font-size: 1em;
  color: #FFF3E6;
}

.page-su-kien__how-to-join .page-su-kien__step-description a {
  color: #FFA53A;
  font-weight: bold;
  text-decoration: none;
}

.page-su-kien__how-to-join .page-su-kien__step-description a:hover {
  text-decoration: underline;
}

.page-su-kien__benefits .page-su-kien__benefit-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 25px;
}

.page-su-kien__benefits .page-su-kien__benefit-item {
  background-color: #17191F;
  border: 1px solid #A84F0C;
  border-radius: 8px;
  padding: 20px;
  font-size: 1.05em;
  color: #FFF3E6;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  position: relative;
  padding-left: 50px;
}

.page-su-kien__benefits .page-su-kien__benefit-item::before {
  content: '✔';
  color: #FFA53A;
  font-size: 1.5em;
  position: absolute;
  left: 15px;
  top: 15px;
}

.page-su-kien__benefits .page-su-kien__benefit-item strong {
  color: #FFB04D;
}

.page-su-kien__terms-conditions .page-su-kien__sub-title {
  font-size: 1.6em;
  color: #FFB04D;
  margin-top: 30px;
  margin-bottom: 15px;
  font-weight: bold;
}

.page-su-kien__faq-section {
  background-color: #17191F;
}

.page-su-kien__faq-list {
  margin-top: 40px;
}

.page-su-kien__faq-item {
  background-color: #0D0E12;
  border: 1px solid #A84F0C;
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.page-su-kien__faq-question {
  padding: 20px 25px;
  font-size: 1.2em;
  color: #FFB04D;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: bold;
  margin: 0;
  position: relative;
}

.page-su-kien__faq-question::after {
  content: '+';
  font-size: 1.5em;
  color: #FFA53A;
  transition: transform 0.3s ease;
  position: absolute;
  right: 25px;
}

.page-su-kien__faq-item.active .page-su-kien__faq-question::after {
  content: '-';
  transform: rotate(180deg);
}

.page-su-kien__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease-out;
  padding: 0 25px;
  color: #FFF3E6;
}

.page-su-kien__faq-answer p {
  padding-bottom: 20px;
  margin: 0;
  text-align: justify;
}

.page-su-kien__faq-answer a {
  color: #FFA53A;
  text-decoration: none;
  font-weight: bold;
}

.page-su-kien__faq-answer a:hover {
  text-decoration: underline;
}

.page-su-kien__conclusion-section {
  padding: 60px 0;
  text-align: center;
  background-color: #0D0E12;
  border-top: 2px solid #A84F0C;
}

/* Mobile responsiveness */
@media (max-width: 1024px) {
  .page-su-kien__main-title {
    font-size: 2.5em;
  }
  .page-su-kien__section-title {
    font-size: 2em;
  }
  .page-su-kien__card-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
  .page-su-kien__benefits .page-su-kien__benefit-list {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  /* 1. Top section padding/spacing, CTA stacking */
  .page-su-kien__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
  }
  .page-su-kien__main-title {
    font-size: 2em !important;
    margin-bottom: 15px;
  }
  .page-su-kien__intro-text {
    font-size: 1em;
    padding: 0 10px;
  }
  .page-su-kien__cta-buttons {
    flex-direction: column;
    gap: 10px;
    padding: 0 15px;
  }
  .page-su-kien__btn-primary,
  .page-su-kien__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 1em;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* 2. Single column long text container */
  .page-su-kien__container {
    padding-left: 15px !important;
    padding-right: 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-su-kien__content-section {
    padding: 40px 0;
  }
  .page-su-kien__section-title {
    font-size: 1.8em !important;
    margin-bottom: 30px;
    padding: 0 10px;
  }
  .page-su-kien__text-block {
    font-size: 0.95em;
    padding: 0 5px;
  }

  /* 3. General images and figure */
  .page-su-kien img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    border-radius: 8px;
  }
  .page-su-kien__image-figure {
    margin: 30px auto;
    max-width: 100%;
  }
  .page-su-kien__image-caption {
    font-size: 0.85em;
    padding: 0 10px;
  }

  /* Card grid adjustment */
  .page-su-kien__card-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-su-kien__card {
    padding: 20px;
  }
  .page-su-kien__card-title {
    font-size: 1.3em;
  }
  .page-su-kien__card-text {
    font-size: 0.9em;
  }

  /* 4. Buttons and button containers (already covered above in CTA buttons) */
  /* Ensure all button-like elements are responsive */
  .page-su-kien__card-link {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
  }

  /* 5. Registration tutorial and FAQ blocks */
  .page-su-kien__how-to-join .page-su-kien__step-item {
    padding-left: 60px;
    padding-right: 15px;
  }
  .page-su-kien__how-to-join .page-su-kien__step-item::before {
    width: 35px;
    height: 35px;
    font-size: 0.8em;
    left: 15px;
    top: 20px;
  }
  .page-su-kien__how-to-join .page-su-kien__step-title {
    font-size: 1.2em;
  }
  .page-su-kien__how-to-join .page-su-kien__step-description {
    font-size: 0.95em;
  }

  .page-su-kien__benefits .page-su-kien__benefit-list {
    grid-template-columns: 1fr;
    gap: 15px;
  }
  .page-su-kien__benefits .page-su-kien__benefit-item {
    font-size: 1em;
    padding-left: 45px;
  }
  .page-su-kien__benefits .page-su-kien__benefit-item::before {
    font-size: 1.3em;
    left: 10px;
    top: 12px;
  }

  .page-su-kien__terms-conditions .page-su-kien__sub-title {
    font-size: 1.4em;
    margin-top: 25px;
  }

  .page-su-kien__faq-question {
    font-size: 1.1em;
    padding: 15px 20px;
  }
  .page-su-kien__faq-question::after {
    right: 20px;
  }
  .page-su-kien__faq-answer p {
    font-size: 0.95em;
    padding-bottom: 15px;
    padding-left: 0;
    padding-right: 0;
  }

  .page-su-kien__conclusion-section {
    padding: 40px 0;
  }
}