.page-index {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333333; /* Default text color for light body background */
  background-color: #F5F7FA; /* Default background */
}

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

.page-index__section {
  padding: 20px 0;
  margin-bottom: 20px;
  background-color: #FFFFFF;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.page-index__top-section {
  padding-top: 10px; /* Small top padding as body handles header offset */
  text-align: center;
  background-color: transparent; /* No specific background for top section */
  box-shadow: none;
  margin-bottom: 40px;
}

.page-index__page-title {
  font-size: clamp(2em, 4vw, 2.8em); /* Responsive font size for H1 */
  font-weight: 700;
  line-height: 1.2;
  color: #E53935;
  margin-bottom: 15px;
  text-align: center;
}

.page-index__description {
  font-size: 1.1em;
  margin-bottom: 25px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  color: #333333;
}

.page-index__top-cta {
  display: flex;
  gap: 15px;
  justify-content: center;
  margin-bottom: 30px;
  flex-wrap: wrap; /* Allow wrapping on smaller screens */
}

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

.page-index__btn--primary {
  background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
  color: #ffffff;
  border: none;
}

.page-index__btn--primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.page-index__btn--secondary {
  background-color: #0066ff;
  color: #ffffff;
  border: none;
}

.page-index__btn--secondary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.page-index__announcement-section {
  text-align: center;
  padding: 30px 20px;
}

.page-index__announcement-title {
  font-size: 1.8em;
  color: #E53935;
  margin-bottom: 20px;
}

.page-index__announcement-section p {
  margin-bottom: 15px;
  text-align: justify;
}

.page-index__selling-points {
  list-style: decimal;
  text-align: left;
  max-width: 800px;
  margin: 20px auto 20px auto;
  padding-left: 25px;
}

.page-index__selling-points li {
  margin-bottom: 8px;
  font-size: 1.05em;
}

.page-index__emphasis-text {
  color: #E53935;
  font-style: italic;
  font-weight: bold;
  margin-top: 20px;
}

.page-index__emphasis-text a {
  color: #E53935;
  text-decoration: underline;
}

.page-index__brand-overview-section {
  padding: 30px 20px;
}

.page-index__subtitle {
  font-size: 1.8em;
  color: #E53935;
  margin-bottom: 20px;
  text-align: center;
}

.page-index__fact-list {
  list-style: none;
  padding: 0;
  margin: 0 0 30px 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 15px;
}

.page-index__fact-list li {
  background-color: #f9f9f9;
  padding: 15px;
  border-left: 4px solid #FF5A4F;
  border-radius: 4px;
  font-size: 1em;
}

.page-index__info-card {
  background-color: #f9f9f9;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

.page-index__info-card p strong {
  color: #E53935;
}

.page-index__info-card ul {
  list-style: disc;
  padding-left: 20px;
  margin-top: 10px;
  margin-bottom: 10px;
}

.page-index__info-card em {
  font-size: 0.9em;
  color: #666;
}

.page-index__warning-card {
  background-color: #fff4f4;
  border-left: 5px solid #ff4141;
  border-radius: 8px;
  padding: 20px;
  color: #d62828;
  font-weight: bold;
}

.page-index__long-content-section {
  padding: 30px 20px;
}

.page-index__long-content-section h2 {
  font-size: 1.7em;
  color: #E53935;
  margin-top: 30px;
  margin-bottom: 15px;
  text-align: center;
}

.page-index__long-content-section h3 {
  font-size: 1.4em;
  color: #FF5A4F;
  margin-top: 25px;
  margin-bottom: 10px;
  text-align: center;
}

.page-index__long-content-section p {
  margin-bottom: 15px;
  text-align: justify;
}

.page-index__long-content-section ol,
.page-index__long-content-section ul {
  margin-bottom: 15px;
  padding-left: 25px;
  text-align: justify;
}

.page-index__long-content-section li {
  margin-bottom: 8px;
}

.page-index__wp-caption {
  text-align: center;
  margin: 20px auto;
  max-width: 680px;
  border: 1px solid #e0e0e0;
  padding: 5px;
  background-color: #fff;
  border-radius: 8px;
}

.page-index__wp-caption img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

.page-index__wp-caption figcaption {
  font-size: 0.9em;
  color: #666;
  padding: 10px 5px;
}

.page-index__blockquote-text {
  font-style: italic;
  font-size: 1.2em;
  color: #555;
  border-left: 5px solid #E53935;
  padding-left: 15px;
  margin: 30px 0;
  text-align: justify;
}

.page-index__blockquote-text cite {
  display: block;
  margin-top: 10px;
  font-size: 0.9em;
  color: #777;
  font-style: normal;
}

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

.page-index__product-list li {
  background-color: #f9f9f9;
  padding: 15px;
  border-left: 4px solid #E53935;
  border-radius: 4px;
  font-weight: bold;
}

.page-index__product-list li a {
  color: #0066ff;
  text-decoration: none;
}

.page-index__product-list li a:hover {
  text-decoration: underline;
}

.page-index__promo-box-section {
  padding: 30px 20px;
  background-color: #F5F7FA; /* Match body background */
  box-shadow: none;
}

.page-index__promo-box {
  background-color: #fffbe6;
  border: 2px dashed #111;
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

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

.page-index__promo-box ul {
  list-style: none;
  padding: 0;
  margin-bottom: 25px;
}

.page-index__promo-box li {
  font-size: 1.1em;
  margin-bottom: 10px;
}

.page-index__btn--promo {
  background-color: #d62828;
  color: #ffffff;
  border: none;
  padding: 15px 35px;
  font-size: 1.2em;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease;
  min-height: 44px;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-index__btn--promo:hover {
  background-color: #ed1c24;
}

.page-index__register-tutorial-section {
  padding: 30px 20px;
}

.page-index__register-tutorial-section h2 {
  font-size: 1.7em;
  color: #E53935;
  margin-bottom: 15px;
  text-align: center;
}

.page-index__register-tutorial-section h3 {
  font-size: 1.4em;
  color: #FF5A4F;
  margin-top: 25px;
  margin-bottom: 10px;
  text-align: center;
}

.page-index__register-tutorial-section p {
  margin-bottom: 15px;
  text-align: justify;
}

.page-index__register-tutorial-section ul {
  list-style: disc;
  padding-left: 25px;
  margin-bottom: 15px;
  text-align: justify;
}

.page-index__faq-contact-section {
  padding: 30px 20px;
}

.page-index__faq-contact-section h2 {
  font-size: 1.7em;
  color: #E53935;
  margin-bottom: 15px;
  text-align: center;
}

.page-index__faq-contact-section h3 {
  font-size: 1.4em;
  color: #FF5A4F;
  margin-top: 25px;
  margin-bottom: 10px;
  text-align: left; /* FAQ questions can be left-aligned */
}

.page-index__faq-contact-section p {
  margin-bottom: 15px;
  text-align: justify;
}

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

.page-index__contact-info li {
  margin-bottom: 8px;
  font-size: 1em;
}

.page-index__contact-info li a {
  color: #0066ff;
  text-decoration: none;
}

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

/* --- Responsive Styles --- */
@media (max-width: 1024px) {
  .page-index__article-wrap {
    padding: 0 15px;
  }

  .page-index__page-title {
    font-size: clamp(1.8em, 5vw, 2.5em);
  }

  .page-index__top-cta {
    gap: 10px;
  }

  .page-index__btn {
    padding: 10px 25px;
    font-size: 1em;
  }

  .page-index__fact-list {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }

  .page-index__long-content-section h2,
  .page-index__long-content-section h3,
  .page-index__announcement-title,
  .page-index__subtitle,
  .page-index__promo-title,
  .page-index__register-tutorial-section h2,
  .page-index__register-tutorial-section h3,
  .page-index__faq-contact-section h2,
  .page-index__faq-contact-section h3 {
    font-size: 1.6em;
  }

  .page-index__promo-box {
    padding: 25px;
  }

  .page-index__btn--promo {
    font-size: 1.1em;
    padding: 12px 30px;
  }
}

@media (max-width: 768px) {
  .page-index {
    font-size: 16px;
    line-height: 1.6;
  }

  /* 1. Top section (Title + CTA) */
  .page-index__top-section {
    padding-top: 10px !important;
    margin-bottom: 20px;
  }

  .page-index__page-title {
    font-size: clamp(1.5em, 6vw, 2em);
    margin-bottom: 10px;
  }

  .page-index__description {
    font-size: 1em;
    margin-bottom: 20px;
    padding: 0 15px;
  }

  .page-index__top-cta {
    flex-direction: column; /* Stack buttons vertically */
    gap: 10px;
    padding: 0 15px;
  }

  .page-index__btn {
    max-width: 100% !important;
    width: 100% !important;
    padding: 12px 15px;
    font-size: 1em;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* 2. Single column long content container */
  .page-index__article-wrap {
    padding: 0 15px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-index__section {
    padding: 20px 15px !important;
    margin-bottom: 15px;
  }

  .page-index__announcement-title,
  .page-index__subtitle,
  .page-index__long-content-section h2,
  .page-index__register-tutorial-section h2,
  .page-index__faq-contact-section h2 {
    font-size: 1.5em;
    margin-bottom: 15px;
    text-align: center;
  }

  .page-index__long-content-section h3,
  .page-index__register-tutorial-section h3,
  .page-index__faq-contact-section h3 {
    font-size: 1.2em;
    margin-top: 20px;
    margin-bottom: 10px;
    text-align: left;
  }

  .page-index__selling-points,
  .page-index__fact-list,
  .page-index__product-list {
    padding-left: 20px;
    margin-left: 0;
    margin-right: 0;
    display: block; /* Ensure lists are stacked */
  }

  .page-index__fact-list li,
  .page-index__product-list li {
    margin-bottom: 10px;
  }

  .page-index__info-card,
  .page-index__warning-card,
  .page-index__promo-box {
    padding: 20px 15px;
    margin-bottom: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-index__blockquote-text {
    font-size: 1.1em;
    padding-left: 10px;
    margin: 20px 0;
  }

  /* 3. Universal images and figure */
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block;
  }

  .page-index__wp-caption {
    margin: 15px auto;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  /* 4. Buttons and button containers (already handled by .page-index__btn) */
  .page-index__btn--promo {
    max-width: 100% !important;
    width: 100% !important;
    padding: 12px 15px;
    font-size: 1.1em;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-index__top-cta,
  .page-index__promo-box-section .page-index__promo-box {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  /* 5. Registration tutorial and FAQ blocks */
  .page-index__register-tutorial-section p,
  .page-index__faq-contact-section p {
    text-align: justify;
    margin-bottom: 10px;
  }

  .page-index__register-tutorial-section ul {
    padding-left: 20px;
  }

  .page-index__contact-info {
    padding-left: 0;
  }
}

@media (max-width: 549px) {
  .page-index__page-title {
    font-size: clamp(1.2em, 8vw, 1.8em);
  }

  .page-index__announcement-title,
  .page-index__subtitle,
  .page-index__long-content-section h2,
  .page-index__register-tutorial-section h2,
  .page-index__faq-contact-section h2 {
    font-size: 1.3em;
  }

  .page-index__long-content-section h3,
  .page-index__register-tutorial-section h3,
  .page-index__faq-contact-section h3 {
    font-size: 1.1em;
  }

  .page-index__promo-title {
    font-size: 1.4em;
  }

  .page-index__btn,
  .page-index__btn--promo {
    font-size: 0.95em;
    padding: 10px 10px;
  }
}