/* style/index.css */
:root {
  --primary-color: #F2C14E;
  --secondary-color: #FFD36B;
  --button-gradient: linear-gradient(180deg, #FFD86A 0%, #DDA11D 100%);
  --card-background: #111111;
  --background-color-page: #0A0A0A;
  --text-main-color: #FFF6D6;
  --border-color: #3A2A12;
  --glow-color: #FFD36B;
}

/* Ensure body padding-top is handled by shared.css for header offset */
.page-index {
  background-color: var(--background-color-page);
  color: var(--text-main-color);
}

/* ------------------ Video Section ------------------ */
.page-index__video-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  padding-top: 10px; /* Small top padding, header offset handled by body in shared.css */
  background-color: var(--background-color-page);
}

.page-index__video-container {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}

.page-index__video-link {
  display: block;
  text-decoration: none;
  position: relative;
  width: 100%;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__video-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
}

.page-index__video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  height: 0;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
}

.page-index__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 8px;
  object-fit: cover;
  pointer-events: none; /* Prevent video controls from interfering with click event on parent <a> */
}

.page-index__video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.4);
  border-radius: 8px;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 1;
}

.page-index__video-link:hover .page-index__video-overlay {
  opacity: 1;
}

.page-index__video-click-hint {
  color: #ffffff;
  font-size: 20px;
  font-weight: bold;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.7);
  padding: 12px 25px;
  background: rgba(var(--primary-color-rgb, 242, 193, 78), 0.9);
  border-radius: 5px;
  white-space: nowrap;
  letter-spacing: 0.5px;
  box-shadow: 0 0 15px var(--glow-color);
}

/* ------------------ Keyword Intro Section ------------------ */
.page-index__keyword-intro-section {
  padding: 80px 20px;
  background-color: var(--background-color-page);
  color: var(--text-main-color);
}

.page-index__keyword-intro-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.page-index__keyword-intro-row {
  display: flex;
  align-items: center;
  gap: 60px;
  margin-bottom: 60px;
}

.page-index__keyword-intro-visual {
  flex: 1;
  min-width: 0;
}

.page-index__keyword-intro-image {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
}

.page-index__keyword-intro-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-index__keyword-intro-title {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--primary-color);
  margin: 0;
}

.page-index__keyword-intro-text {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-main-color);
  margin: 0;
}

.page-index__keyword-intro-cta {
  display: inline-block;
  background: var(--button-gradient);
  color: #ffffff;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 18px;
  font-weight: 600;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: none;
  cursor: pointer;
  text-align: center;
  max-width: 250px;
  box-sizing: border-box;
}

.page-index__keyword-intro-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(var(--glow-color-rgb, 255, 211, 107), 0.5);
}

.page-index__keyword-intro-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  list-style: none;
  padding: 0;
  margin: 0;
  background-color: var(--card-background);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
}

.page-index__keyword-intro-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-index__keyword-intro-stat-value {
  font-size: 48px;
  font-weight: 800;
  color: var(--secondary-color);
  line-height: 1.1;
  margin-bottom: 8px;
}

.page-index__keyword-intro-stat-label {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-main-color);
  line-height: 1.4;
}

/* ------------------ Article Category Section ------------------ */
.page-index__articles-section {
  padding: 60px 20px;
  background-color: var(--background-color-page);
}

.page-index__articles-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-index__articles-main-title {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 5px;
  margin-bottom: 50px;
  text-align: left;
}

.page-index__articles-title-small {
  font-size: 18px;
  font-weight: 900;
  color: var(--secondary-color);
  letter-spacing: 1px;
}

.page-index__articles-title-large {
  font-size: 42px;
  font-weight: 900;
  color: var(--primary-color);
  line-height: 1.2;
}

.page-index__category-section {
  margin-bottom: 60px;
  padding: 30px;
  background: var(--card-background);
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
}

.page-index__category-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
}

.page-index__category-title-wrapper {
  display: flex;
  align-items: center;
  gap: 15px;
  flex-shrink: 1;
  min-width: 0;
}

.page-index__category-icon {
  width: 30px;
  height: 30px;
  object-fit: contain;
  filter: drop-shadow(0 0 5px rgba(var(--secondary-color-rgb, 255, 211, 107), 0.5)); /* Allowed for icons */
}

.page-index__category-title {
  font-size: 26px;
  font-weight: 700;
  margin: 0;
  color: var(--text-main-color);
}

.page-index__category-read-more {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
  white-space: nowrap;
  flex-shrink: 0;
  font-size: 16px;
}

.page-index__category-read-more:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.page-index__articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-bottom: 20px;
}

.page-index__article-card {
  display: flex;
  flex-direction: column;
  background: transparent;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border-radius: 8px;
  overflow: hidden;
}

.page-index__article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.page-index__article-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.page-index__article-thumbnail {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 aspect ratio */
  overflow: hidden;
  background: #333333;
  border-radius: 8px;
  margin-bottom: 0;
}

.page-index__article-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}

.page-index__article-provider-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(var(--primary-color-rgb, 242, 193, 78), 0.9);
  color: #ffffff;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  z-index: 1;
  text-transform: uppercase;
}

.page-index__article-title-link {
  display: block;
  text-decoration: none;
  color: inherit;
  margin-top: 15px;
  padding: 0 5px;
}

.page-index__article-title {
  margin: 0;
  padding: 0;
  font-size: 19px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main-color);
  transition: color 0.3s ease;
}

.page-index__article-title-link:hover .page-index__article-title {
  color: var(--primary-color);
}

/* ------------------ Partners Section ------------------ */
.page-index__partners-section {
  padding: 60px 20px;
  background: var(--background-color-page);
}

.page-index__partners-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-index__partners-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 25px;
  align-items: center;
  justify-items: center;
}

.page-index__partner-item {
  background-color: var(--card-background);
  border-radius: 10px;
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: auto;
  box-sizing: border-box;
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.page-index__partner-logo {
  width: 167px;
  height: 127px;
  object-fit: contain;
  display: block;
}

/* ------------------ Info Section ------------------ */
.page-index__info-section {
  padding: 80px 20px;
  background: var(--background-color-page);
  color: var(--text-main-color);
}

.page-index__info-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-index__info-main-title {
  font-size: 40px;
  font-weight: 700;
  text-align: left;
  margin-bottom: 50px;
  color: var(--primary-color);
  line-height: 1.3;
}

.page-index__info-content {
  line-height: 1.8;
  color: var(--text-main-color);
  font-size: 17px;
}

.page-index__info-subsection {
  margin-bottom: 40px;
}

.page-index__info-subtitle {
  font-size: 30px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--secondary-color);
}

.page-index__info-content h4 {
  font-size: 24px;
  font-weight: 600;
  margin-top: 30px;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-index__info-content p {
  margin-bottom: 15px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-main-color);
}

.page-index__info-list {
  margin: 20px 0;
  padding-left: 30px;
  list-style-type: disc;
}

.page-index__info-list li {
  margin-bottom: 10px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-main-color);
}

/* First section is always visible */
.page-index__info-first-section {
  margin-bottom: 40px;
}

/* Expandable content area - initial state is collapsed */
.page-index__info-expandable {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.7s ease-out; /* Slower transition for smoother expansion */
}

.page-index__info-expandable.expanded {
  max-height: 5000px; /* Sufficiently large to contain all content */
  transition: max-height 1s ease-in; /* Faster transition when expanding */
}

/* Load more/Load less button */
.page-index__load-less-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  margin: 40px auto 0;
  padding: 0;
  background: transparent;
  border: none;
  font-size: 17px;
  font-weight: normal;
  cursor: pointer;
  transition: color 0.3s ease;
  text-decoration: none;
  max-width: 200px; /* Constrain button width */
  width: 100%;
  box-sizing: border-box;
}

.page-index__load-less-text {
  color: var(--primary-color);
  transition: color 0.3s ease;
}

.page-index__load-less-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  color: var(--primary-color);
  transition: color 0.3s ease;
}

.page-index__load-less-arrow {
  font-size: 15px;
  line-height: 1;
  display: block;
  transition: transform 0.3s ease;
}

/* Collapsed state: "Load more", primary color, 3 downward arrows */
.page-index__load-less-btn.collapsed .page-index__load-less-text {
  color: var(--primary-color);
}

.page-index__load-less-btn.collapsed .page-index__load-less-icon {
  color: var(--primary-color);
}

.page-index__load-less-btn.collapsed .page-index__load-less-arrow {
  transform: rotate(0deg);
  display: block;
}

/* Expanded state: "Load less", secondary color, 2 upward arrows */
.page-index__load-less-btn.expanded .page-index__load-less-text {
  color: var(--secondary-color);
}

.page-index__load-less-btn.expanded .page-index__load-less-icon {
  color: var(--secondary-color);
}

.page-index__load-less-btn.expanded .page-index__load-less-arrow:nth-child(1) {
  transform: rotate(180deg);
  display: block;
}
.page-index__load-less-btn.expanded .page-index__load-less-arrow:nth-child(2) {
  transform: rotate(180deg);
  display: block;
}
.page-index__load-less-btn.expanded .page-index__load-less-arrow:nth-child(3) {
  display: none;
}

/* ------------------ Responsive Design ------------------ */
@media (max-width: 1024px) {
  .page-index__keyword-intro-row {
    flex-direction: column;
    gap: 40px;
    text-align: center;
  }
  .page-index__keyword-intro-content {
    align-items: center;
  }
  .page-index__keyword-intro-title {
    font-size: 34px;
  }
  .page-index__keyword-intro-text {
    font-size: 16px;
  }
  .page-index__articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-index__partners-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-index__info-main-title {
    font-size: 36px;
  }
  .page-index__info-subtitle {
    font-size: 28px;
  }
  .page-index__info-content h4 {
    font-size: 22px;
  }
}

@media (max-width: 768px) {
  /* All images */
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block;
  }
  /* All containers with images/content */
  .page-index__video-section,
  .page-index__video-container,
  .page-index__video-link,
  .page-index__video-wrapper,
  .page-index__keyword-intro-section,
  .page-index__keyword-intro-inner,
  .page-index__keyword-intro-row,
  .page-index__keyword-intro-stats,
  .page-index__articles-section,
  .page-index__articles-container,
  .page-index__category-section,
  .page-index__articles-grid,
  .page-index__article-card,
  .page-index__article-thumbnail,
  .page-index__partners-section,
  .page-index__partners-container,
  .page-index__partners-grid,
  .page-index__partner-item,
  .page-index__info-section,
  .page-index__info-container,
  .page-index__info-content {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important; /* Prevent content overflow */
  }

  /* All buttons */
  .page-index__keyword-intro-cta,
  .page-index__load-less-btn {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-index__video-section {
    padding: 40px 15px; /* Adjust padding for mobile */
    padding-top: 10px !important; /* Small top padding for video section */
  }

  .page-index__video-click-hint {
    font-size: 16px;
    padding: 10px 20px;
  }

  .page-index__keyword-intro-section {
    padding: 50px 15px;
  }
  .page-index__keyword-intro-title {
    font-size: 28px;
  }
  .page-index__keyword-intro-text {
    font-size: 15px;
  }
  .page-index__keyword-intro-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    padding: 20px;
  }
  .page-index__keyword-intro-stat-value {
    font-size: 40px;
  }
  .page-index__keyword-intro-stat-label {
    font-size: 14px;
  }

  .page-index__articles-section {
    padding: 40px 15px;
  }
  .page-index__articles-main-title {
    margin-bottom: 30px;
  }
  .page-index__articles-title-small {
    font-size: 16px;
  }
  .page-index__articles-title-large {
    font-size: 32px;
  }
  .page-index__category-section {
    margin-bottom: 40px;
    padding: 20px 15px;
  }
  .page-index__category-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 20px;
  }
  .page-index__category-title {
    font-size: 22px;
  }
  .page-index__category-read-more {
    font-size: 15px;
  }
  .page-index__articles-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .page-index__article-title {
    font-size: 17px;
  }

  .page-index__partners-section {
    padding: 40px 15px;
  }
  .page-index__partners-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
  }
  .page-index__partner-item {
    padding: 8px;
  }
  .page-index__partner-logo {
    width: 100%; /* Adjust to fit container */
    max-width: 120px;
    height: 90px;
  }

  .page-index__info-section {
    padding: 50px 15px;
  }
  .page-index__info-main-title {
    font-size: 30px;
  }
  .page-index__info-subtitle {
    font-size: 24px;
  }
  .page-index__info-content h4 {
    font-size: 20px;
  }
  .page-index__info-content p,
  .page-index__info-list li {
    font-size: 15px;
  }
}

@media (max-width: 480px) {
  .page-index__video-section {
    padding: 30px 10px;
    padding-top: 10px !important;
  }
  .page-index__video-click-hint {
    font-size: 14px;
    padding: 8px 16px;
  }

  .page-index__keyword-intro-section {
    padding: 40px 10px;
  }
  .page-index__keyword-intro-title {
    font-size: 24px;
  }
  .page-index__keyword-intro-text {
    font-size: 14px;
  }
  .page-index__keyword-intro-stats {
    grid-template-columns: 1fr;
    gap: 15px;
    padding: 15px;
  }
  .page-index__keyword-intro-stat-value {
    font-size: 36px;
  }
  .page-index__keyword-intro-stat-label {
    font-size: 13px;
  }

  .page-index__articles-section {
    padding: 30px 10px;
  }
  .page-index__articles-main-title {
    margin-bottom: 25px;
  }
  .page-index__articles-title-small {
    font-size: 14px;
  }
  .page-index__articles-title-large {
    font-size: 26px;
  }
  .page-index__category-section {
    margin-bottom: 30px;
    padding: 15px 10px;
  }
  .page-index__category-title {
    font-size: 20px;
  }
  .page-index__category-read-more {
    font-size: 14px;
  }
  .page-index__articles-grid {
    grid-template-columns: 1fr; /* Single column for very small screens */
    gap: 15px;
  }
  .page-index__article-title {
    font-size: 16px;
  }

  .page-index__partners-section {
    padding: 30px 10px;
  }
  .page-index__partners-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .page-index__partner-item {
    padding: 5px;
  }
  .page-index__partner-logo {
    max-width: 100px;
    height: 70px;
  }

  .page-index__info-section {
    padding: 40px 10px;
  }
  .page-index__info-main-title {
    font-size: 26px;
  }
  .page-index__info-subtitle {
    font-size: 20px;
  }
  .page-index__info-content h4 {
    font-size: 18px;
  }
  .page-index__info-content p,
  .page-index__info-list li {
    font-size: 14px;
  }
}