.page-index {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333333; /* Default text color for light background */
  background-color: var(--background-color, #FFFFFF); /* Inherit from shared or default to white */
}

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

.page-index__section {
  padding: 30px 0;
  margin-bottom: 20px;
}

.page-index__top-section {
  padding-top: 10px; /* Small top padding, relies on body padding-top from shared.css */
  text-align: center;
  padding-bottom: 40px;
}

.page-index__page-title {
  font-size: 2.8em;
  font-weight: bold;
  color: #26A9E0; /* Brand main color for H1 */
  margin-bottom: 15px;
  line-height: 1.2;
  max-width: 900px; /* Limit H1 width for better readability */
  margin-left: auto;
  margin-right: auto;
}

.page-index__page-description {
  font-size: 1.1em;
  color: #555555;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

.page-index__top-cta {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-index__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 30px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  min-height: 44px; /* Minimum touch target height */
  transition: background-color 0.3s ease, color 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-index__btn--primary {
  background-color: #26A9E0; /* Main brand color */
  color: #FFFFFF;
  border: 2px solid #26A9E0;
}

.page-index__btn--primary:hover {
  background-color: #1a8cc7;
  border-color: #1a8cc7;
}

.page-index__btn--secondary {
  background-color: #FFFFFF;
  color: #26A9E0;
  border: 2px solid #26A9E0;
}

.page-index__btn--secondary:hover {
  background-color: #e0f2f7;
}

.page-index__section-title {
  font-size: 2em;
  font-weight: bold;
  color: #26A9E0;
  margin-bottom: 25px;
  text-align: center;
  line-height: 1.3;
}

.page-index__sub-title {
  font-size: 1.5em;
  font-weight: bold;
  color: #26A9E0;
  margin-top: 30px;
  margin-bottom: 15px;
}

.page-index__announcement-section p,
.page-index__brand-overview-section p,
.page-index__seo-content-section p,
.page-index__register-tutorial-section p,
.page-index__faq-section p {
  margin-bottom: 15px;
  text-align: justify;
}

.page-index__highlight-text {
  text-align: center;
  font-size: 1.1em;
  color: #d62828;
  font-style: italic;
  margin-top: 25px;
}

.page-index__highlight-text a {
  color: #d62828;
  text-decoration: underline;
}

.page-index__feature-list,
.page-index__identification-list,
.page-index__advantage-list,
.page-index__product-list,
.page-index__promo-list,
.page-index__card-list,
.page-index__fact-list,
.page-index__contact-info-list {
  list-style: disc;
  margin-left: 25px;
  margin-bottom: 15px;
}

.page-index__feature-list li,
.page-index__identification-list li,
.page-index__advantage-list li,
.page-index__product-list li,
.page-index__promo-list li,
.page-index__card-list li,
.page-index__fact-list li,
.page-index__contact-info-list li {
  margin-bottom: 8px;
  line-height: 1.5;
}

.page-index__info-card {
  background-color: #f9f9f9;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 25px;
  margin-top: 30px;
  margin-bottom: 30px;
  box-sizing: border-box;
}

.page-index__info-card p strong {
  color: #26A9E0;
  font-size: 1.1em;
}

.page-index__info-card em {
  font-size: 0.9em;
  color: #777;
}

.page-index__warning-card {
  background-color: #fff4f4;
  border-left: 5px solid #ff4141;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 30px;
  color: #d62828;
  box-sizing: border-box;
}

.page-index__warning-card strong {
  color: #ff4141;
}

.page-index__seo-content-section h2,
.page-index__seo-content-section h3 {
  color: #26A9E0;
}

.page-index__wp-caption {
  margin: 25px auto;
  max-width: 680px;
  text-align: center;
}

.page-index__wp-caption img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.page-index__wp-caption figcaption {
  font-size: 0.9em;
  color: #777;
  margin-top: 10px;
}

.page-index__blockquote {
  border-left: 4px solid #26A9E0;
  padding-left: 20px;
  margin: 30px 0;
  font-style: italic;
  color: #555;
  font-size: 1.1em;
}

.page-index__promo-box-section {
  background-color: #f0f8ff;
  padding: 40px 0;
}

.page-index__promo-box {
  background-color: #fffbe6;
  border: 2px dashed #111;
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-sizing: border-box;
}

.page-index__promo-title {
  font-size: 1.8em;
  color: #d62828;
  margin-bottom: 20px;
  font-weight: bold;
}

.page-index__promo-box p {
  margin-bottom: 15px;
  font-size: 1.1em;
}

.page-index__btn--promo {
  background-color: #d62828;
  color: #FFFFFF;
  border: 2px solid #d62828;
  margin-top: 20px;
  padding: 15px 40px;
  font-size: 1.2em;
  border-radius: 8px;
}

.page-index__btn--promo:hover {
  background-color: #b01a1a;
  border-color: #b01a1a;
}

.page-index__faq-section h3 {
  font-size: 1.4em;
  color: #26A9E0;
  margin-top: 25px;
  margin-bottom: 10px;
}

.page-index__faq-answer {
  margin-bottom: 20px;
}

.page-index__contact-info-list {
  list-style: none;
  padding-left: 0;
  margin-top: 20px;
}

.page-index__contact-info-list li {
  margin-bottom: 10px;
}

.page-index__contact-info-list a {
  color: #26A9E0;
  text-decoration: none;
}

.page-index__contact-info-list a:hover {
  text-decoration: underline;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-index__page-title {
    font-size: 2.5em;
  }
  .page-index__section-title {
    font-size: 1.8em;
  }
  .page-index__sub-title {
    font-size: 1.3em;
  }
  .page-index__btn {
    padding: 10px 25px;
    font-size: 1em;
  }
}

@media (max-width: 768px) {
  /* 1. Top section (h1 + CTA buttons) */
  .page-index__top-section {
    padding-top: 10px !important; /* Small top padding */
    padding-bottom: 30px;
  }
  .page-index__page-title {
    font-size: 2em !important;
    margin-bottom: 10px;
    padding: 0 15px;
  }
  .page-index__page-description {
    font-size: 1em !important;
    margin-bottom: 20px;
    padding: 0 15px;
  }
  .page-index__top-cta {
    flex-direction: column;
    gap: 10px;
    padding: 0 15px;
  }
  .page-index__btn {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 15px !important;
    font-size: 1em !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* 2. Single-column content wrapper */
  .page-index__article-wrap {
    padding: 0 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-index__section {
    padding: 20px 0 !important;
    margin-bottom: 15px;
  }
  .page-index__section-title {
    font-size: 1.5em !important;
    margin-bottom: 20px;
  }
  .page-index__sub-title {
    font-size: 1.2em !important;
    margin-top: 25px;
    margin-bottom: 10px;
  }
  .page-index__info-card,
  .page-index__warning-card,
  .page-index__promo-box {
    padding: 20px !important;
    margin-top: 20px;
    margin-bottom: 20px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-index__announcement-section p,
  .page-index__brand-overview-section p,
  .page-index__seo-content-section p,
  .page-index__register-tutorial-section p,
  .page-index__faq-section p {
    font-size: 0.95em;
  }
  .page-index__promo-title {
    font-size: 1.5em !important;
  }
  .page-index__btn--promo {
    font-size: 1.1em !important;
    padding: 12px 25px !important;
    width: 100% !important;
    max-width: 100% !important;
  }

  /* 3. General images and figure */
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-index__wp-caption {
    margin: 20px auto !important;
    width: 100% !important;
    max-width: 100% !important;
  }
  .page-index__wp-caption figcaption {
    font-size: 0.85em;
  }

  /* 4. Buttons and button containers (already covered in top-cta and general .page-index__btn) */
  /* Ensure all button containers also have max-width: 100% */
  .page-index__top-cta,
  .page-index__button-group { /* Example class for other button groups */
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
  }

  /* 5. Registration tutorial and FAQ blocks */
  .page-index__faq-section h3 {
    font-size: 1.2em !important;
  }
  .page-index__contact-info-list {
    font-size: 0.95em;
  }
  .page-index__feature-list,
  .page-index__identification-list,
  .page-index__advantage-list,
  .page-index__product-list,
  .page-index__promo-list,
  .page-index__card-list,
  .page-index__fact-list,
  .page-index__contact-info-list {
    margin-left: 20px;
  }
}