body {
  font-family: 'Figtree', sans-serif;
  background-color: #f2f2f2;
  color: #1a1a1a;
}


/* HERO */
.research-hero {
  display: flex;
  flex-direction: column;
  justify-content: flex-end; 
  align-items: center;
  min-height: 60vh; 
  padding: 40px 20px;
  background-image: linear-gradient(rgba(0, 0, 0, 0.45), rgba(0, 0, 0, 0.45)),
    url("images/interview.JPG");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: white;
  text-align: center;
  font-family: 'Figtree', sans-serif;
}

.hero-content {
  max-width: 960px;
  width: 100%;
  text-align: center;
  padding-bottom: 40px;
}


.hero-text {
  margin-bottom: 40px;
  
}

.research-hero h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 20px;
}

.research-hero p {
  max-width: 800px;
  margin: 0 auto;
  font-size: 18px;
  line-height: 1.8;
}

.research-stats {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 48px;
  flex-wrap: wrap;
  background-color: transparent;
}

.stat-item h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 5px;
}

.stat-item p {
  font-size: 14px;
}


.context-section {
  background-color: #f6f7fc;
  padding: 80px 20px;
  text-align: center;
}

.section-title-wrapper {
  max-width: 800px;
  margin: 0 auto 60px auto;
}

.section-title-wrapper h2 {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 8px;
  color: #333;
}

.section-description {
  font-size: 16px;
  color: #666;
  margin-bottom: 40px;
}

.context-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-bottom: 60px;
}

.context-stat h3 {
  font-size: 28px;
  color: #4d6cff;
  font-weight: 700;
  margin-bottom: 4px;
}

.context-stat p {
  font-size: 14px;
  color: #333;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.context-columns {
  display: flex;
  flex-direction: row;
  justify-content: center;
  gap: 40px;
  text-align: left;
  max-width: 1000px;
  margin: 0 auto;
  padding-bottom: 20px;
}

.context-block {
  flex: 1;
  min-width: 280px;
}

.context-block h4 {
  font-size: 18px;
  font-weight: 700;
  border-bottom: 2px solid #4d6cff;
  padding-bottom: 8px;
  margin-bottom: 12px;
}

.context-block p {
  font-size: 15px;
  color: #333;
  line-height: 1.6;
}


.challenge-section {
  background: #f7f8fa;
  padding: 80px 20px;
  text-align: center;
}

.challenge-section h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 32px;
  color: #1a1a1a;
}

.challenge-section .challenge-text {
  max-width: 960px;
  margin: 0 auto 48px;
  font-size: 16px;
  line-height: 1.8;
  color: #333;
  padding: 0 20px;
}

.challenge-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

.challenge-card {
  flex: 1 1 280px;
  max-width: 300px;
  background: #ffffff;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease;
  text-align: left;
  border: 1px solid #e5e5e5;
}



.challenge-card:hover {
  transform: translateY(-4px);
}

.challenge-card h3 {
  font-size: 18px;
  color: #3c3c50;
  margin-bottom: 12px;
}

.challenge-card p {
  font-size: 14px;
  color: #444;
  line-height: 1.6;
}

.process-section {
  background: #f7f8fa;
  text-align: center;
}

.process-section h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 32px;
  color: #1a1a1a;
}

.instruction {
  font-size: 16px;
  color: #333;
  line-height: 1.8;
  max-width: 800px;
  margin: 0 auto 48px;
}

.card-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
  justify-content: center;
}


.info-card {
  background: #f9f9f9;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
  text-align: left;
  cursor: pointer;
  transition: background-color 0.3s ease;
  border: 1px solid #eee;
  position: relative;
}

.info-card:hover {
  border-color: #a3bffa;
}

.info-card h3 {
  margin-bottom: 8px;
  font-size: 16px;
}

.card-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.4s ease;
  opacity: 0;
  font-size: 14px;
  line-height: 1.5;
}

.info-card .card-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.info-card.expanded .card-detail {
  max-height: 500px; /* 또는 충분히 큰 값 */
}


.info-card.expanded h3 {
  color: white;
}

.insights-section {
  padding: 80px 40px;
  background-color: #fff;
  display: flex;
  flex-direction: column;
  gap: 48px;
  align-items: center;
  text-align: center;
}

.insights-flex-wrapper {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 60px;
  flex-wrap: wrap;
}

.insight-image img {
  width: 400px;
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.insight-list {
  flex: 1;
  max-width: 600px;
  text-align: left;
}

.section-subtitle {
  font-size: 16px;
  line-height: 1.8;
  color: #333;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.insight-title-wrapper h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 32px;
  color: #1a1a1a;
}

.insight-card {
  background: #f9f9f9;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 25px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  border: 1px solid #e0e0e0;
  cursor: pointer;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.insight-card:hover {
  border-color: #a3bffa;
}

.card-header {
  display: flex;
  align-items: flex-start;
}

.card-header p {
  margin: 0;
  font-size: 15px;
  color: #333;
}

.card-content {
  margin-top: 12px;
  font-size: 14px;
  color: #444;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.3s ease, opacity 0.3s ease;
}

.icon {
  display: none; /* 이모지 제거 */
}


.insight-card.expanded {
  border-color: #6a85f1;
  background-color: #eef2ff;
}

.insight-card.expanded .card-content {
  max-height: 300px;
  opacity: 1;
}

.hmw-section {
  background-color: #f9fafc;
  padding: 80px 20px 100px;
  text-align: center;
}

.hmw-section h2 {
  font-size: 30px;
  margin-bottom: 40px;
}

.hmw-list {
  list-style: none;
  padding: 0;
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.hmw-list li {
  display: flex;
  align-items: flex-start;
  text-align: left;
  gap: 16px;
}

.hmw-number {
  background-color: #6a85f1;
  color: white;
  font-weight: bold;
  border-radius: 50%;
  font-size: 14px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}


.hmw-list p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: #333;
}

@media (max-width: 768px) {
  .insights-flex-wrapper {
    flex-direction: column;
    align-items: center;
  }

  .insight-image img {
    width: 100%;
    max-width: 360px;
  }

  .context-columns {
    flex-direction: column;
    align-items: center;
  }

  .challenge-cards {
    flex-direction: column;
    align-items: stretch;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}

.context-intro {
  padding: 80px 20px 40px;
  text-align: center;
  font-family: 'Figtree', sans-serif;
}

.context-intro h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 24px;
  color: #1a1a1a;
}

.context-description {
  font-size: 16px;
  line-height: 1.8;
  color: #333;
  max-width: 800px;
  margin: 0 auto;
}

.content-wrapper {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}