.page-index {
  padding-bottom: 20px;
}

.page-index__hero-section {
  padding-top: 10px; /* Small top padding, body handles header offset */
}

.page-index__hero-banner {
  width: 100%;
  margin: 0;
  overflow: hidden;
}

.page-index__hero-banner img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 5; /* 1920x600 ratio */
  object-fit: cover;
  object-position: center;
  filter: none; /* Ensure no grayscale or color filters */
}

.page-index__container {
  max-width: 1390px;
  margin: 0 auto;
  padding: 0 15px;
}

.page-index__main-title-section {
  text-align: center;
  padding: 40px 0 30px;
}

.page-index__section-title-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 20px;
}

.page-index__decorative-line {
  flex-grow: 1;
  height: 2px;
  background-color: #26A9E0;
  max-width: 100px;
}

.page-index__main-title {
  color: #26A9E0;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0;
  padding: 0;
  /* clamp for responsive font size, avoids fixed large values */
  font-size: clamp(1.1rem, 4.5vw, 1.75rem);
  max-width: 800px; /* Prevent title from being too wide */
}

.page-index__intro-description {
  color: #000000;
  font-size: 1.1rem;
  line-height: 1.6;
  max-width: 900px;
  margin: 0 auto;
}

.page-index__category-gateway-section {
  padding: 30px 0 50px;
}

.page-index__category-gateway {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, 1fr); /* Mobile default: 3 rows x 2 columns */
}

.page-index__category-card {
  display: block;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  transition: transform 0.2s ease;
}

.page-index__category-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  filter: none; /* Ensure full color, no grayscale */
  transition: transform 0.2s ease;
  min-width: 200px; /* Minimum size requirement */
  min-height: 200px;
}

.page-index__category-card:hover {
  transform: scale(1.03);
}

@media (min-width: 850px) {
  .page-index__category-gateway {
    grid-template-columns: repeat(6, 1fr); /* PC: 6 items in one row */
  }
  .page-index__decorative-line {
    max-width: 150px;
  }
}

.page-index__article-body-section {
  background-color: #FFFFFF; /* Ensure white background for article body */
  padding: 50px 0;
  color: #000000;
}

.page-index__article-content {
  font-size: 1rem;
  line-height: 1.7;
}

.page-index__article-content h2 {
  color: #26A9E0;
  font-size: clamp(1.4rem, 3.5vw, 2rem);
  margin-top: 40px;
  margin-bottom: 20px;
  font-weight: 700;
}

.page-index__article-content h3 {
  color: #26A9E0;
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  margin-top: 30px;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-index__article-content p,
.page-index__article-content ul li {
  color: #000000;
  margin-bottom: 1em;
}

.page-index__article-content a {
  color: #26A9E0;
  text-decoration: underline;
}

.page-index__article-content a:hover {
  color: #EA7C07;
}

.page-index__blockquote {
  border-left: 5px solid #26A9E0;
  padding-left: 20px;
  margin: 30px 0;
  font-style: italic;
  color: #000000;
}

.page-index__blockquote p {
  margin-bottom: 0;
}

.page-index__highlight-text {
    color: #EA7C07;
    font-weight: bold;
}

.page-index__article-figure {
  margin: 30px auto;
  text-align: center;
  max-width: 800px;
}

.page-index__article-figure.page-index__aligncenter {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-index__article-figure img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  object-fit: cover;
  filter: none; /* Ensure no grayscale or color filters */
  min-width: 200px; /* Minimum size requirement */
  min-height: 200px;
}

.page-index__article-figure figcaption {
  font-size: 0.9em;
  color: #666;
  margin-top: 10px;
}

.page-index__article-content ul {
  list-style-type: disc;
  margin-left: 20px;
  padding-left: 0;
}

.page-index__article-content ul li {
  margin-bottom: 0.5em;
}

/* Ensure all images in content area are responsive and meet min size */
.page-index__article-content img {
  max-width: 100%;
  height: auto;
  display: block;
  min-width: 200px;
  min-height: 200px;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  .page-index__decorative-line {
    max-width: 50px;
  }

  .page-index__main-title-section {
    padding: 20px 0;
  }

  .page-index__category-gateway-section {
    padding: 20px 0 30px;
  }

  .page-index__article-body-section {
    padding: 30px 0;
  }

  .page-index__container {
    padding: 0 12px; /* Minimum 12px padding */
  }

  .page-index__article-content img,
  .page-index__category-card img {
    max-width: 100% !important;
    height: auto !important;
  }
  .page-index__article-content table {
    overflow-x: auto;
    display: block;
    white-space: nowrap;
  }
  .page-index__article-content {
    text-align: left; /* Adjust justify for small screens */
  }
}

/* Specific color rules */
.page-index__intro-description,
.page-index__article-content p,
.page-index__article-content ul li,
.page-index__blockquote {
  color: #000000;
}

.page-index__main-title,
.page-index__article-content h2,
.page-index__article-content h3,
.page-index__article-content a {
  color: #26A9E0;
}

.page-index__decorative-line {
  background-color: #26A9E0;
}

/* Login button color (if any) */
.page-index__login-button {
  background-color: #EA7C07;
  color: #FFFFFF;
}

.page-index__login-button:hover {
  opacity: 0.9;
}