.main-section-1 {
  position: relative;
  height: 600px;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  overflow: hidden;
  background: #000;
}

.main-bg-video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  object-fit: fill;
  transform: translate(-50%, -50%);
  z-index: 1;
}

.main-bg-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2;
}

.main-content {
  position: relative;
  z-index: 3;
  color: white;
  max-width: 900px;
  padding: 0 20px;
}

.main-title {
  display: block;
  font-size: 56px;
  font-weight: 700;
  margin-bottom: 20px;
}

.main-title-sub {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 20px;
}

.main-subtitle {
  font-size: 24px;
  opacity: 0.9;
  line-height: 1.6;
  margin-bottom: 0;
}

.main-data-section {
  max-width: 1200px;
  margin: 80px auto;
  text-align: center;
  padding: 0 20px;
}

.main-data-title {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 50px;
  color: #111;
}

.main-data-subtitle {
  font-size: 18px;
  color: #555;
  margin-bottom: 40px;
}

.main-data-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.main-data-link,
.main-data-link:visited,
.main-data-link:hover,
.main-data-link:active {
  color: inherit;
  text-decoration: none;
}

.main-data-card {
  background: white;
  border: 2px solid transparent;
  border-radius: 12px;
  padding: 22px;
  text-align: left;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: 0.2s;
  cursor: pointer;
}

.main-data-card:hover {
  border-color: #3b82f6;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
}

.main-data-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.main-data-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red {background:#ff4d4f;}
.dot-blue {background:#3b82f6;}
.dot-green {background:#10b981;}
.dot-light-green {background:#4cedb7;}
.dot-light-purple {background:#6366f1;}
.dot-purple {background:#6366f1;}

.main-data-record {
  font-size: 14px;
  color: #666;
}

.main-data-card-div {
  align-items: center;
}

.main-data-card-title {
  font-size: 24px;
  font-weight: 700;
  margin: 0 0 4px;
}

.main-data-card-title-min {
  display: block;
  font-size: 18px;
  font-weight: 700;
  margin: 14px 0 8px;
}

.main-data-card-title-min-none {
  font-size: 5px;
  font-weight: 700;
  margin: 14px 0 8px;
}

.main-section-2 {
  height: 180px;
  width: 100%;
  background: #26328A;
  color: white;
}


.main-section-2-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 50px 20px;
  display: flex;
  justify-content: space-around;
  align-items: center;
  gap: 40px;
  text-align: center;
}

.main-section-2-item {
  min-width: 180px;
}

.main-section-2-number {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
}

.main-section-2-label {
  font-size: 14px;
  opacity: 0.85;
}

.main-section-3 {
  max-width: 1200px;
  margin: 30px auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.main-section-3-1 {
  max-width: 1200px;
  margin: 30px auto;
  padding: 0 20px;
  display: flex;
  gap: 24px;
}

.main-section-3-title-section {
  display: flex;
  justify-content: space-between;
}

.main-section-3-title {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 20px;
  color: #111;
}

.main-section-3-date {
  font-size: 14px;
  color: #666;
}

.main-research-card {
  margin-bottom: 20px;
}

.near-ocean-wrapper {
  margin-top: 20px;
}

.main-image-wrapper {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 5px;
}

.main-image {
  width: 100%;
  height: 100%;
  object-fit: fill;
}

.main-research-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/*
.main-research-img1 {
  width: 275px;
}

.main-research-img2 {
  width: 275px;
}

.main-research-img3 {
  margin-top: 10px;
  width: 560px;
}
*/

.main-research-content {
  padding: 16px 20px;
}

.main-metric-bar {
  width: 100%;
  height: 70px;
  background: #fff;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px 10px 16px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* 좌측 */
.metric-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.metric-name {
  font-size: 18px;
  font-weight: 700;
  color: #111827;
  min-width: 120px; /* 이름 길이 흔들림 방지 */
  text-align: center;
}

.metric-arrow {
  width: 34px;
  height: 34px;
  border: none;
  background: transparent;
  font-size: 18px;
  color: #111827;
  cursor: pointer;
  border-radius: 50%;
  transition: .15s;
}

.metric-arrow:hover {
  background: #f3f4f6;
}

/* 우측 */
.metric-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.metric-right .bi {
  font-size: 28px;
  color: #111827;
}

.metric-icon {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.metric-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.1;
}

.metric-label {
  font-size: 12px;
  color: #374151;
  font-weight: 600;
}

.metric-value {
  font-size: 20px;
  font-weight: 800;
  color: #111827;
}

.main-section-4 {
  height: fit-content;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: white;
  padding: 40px 0;
  background: linear-gradient(to right, #308C93, #3C69DA);
}

.main-section-4-content {
  max-width: 100%;
  padding: 0 20px;
}

.main-section-4-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 20px;
}

.main-section-4-subtitle {
  font-size: 20px;
  opacity: 0.9;
  line-height: 1.6;
  margin-bottom: 40px;
}

.main-service-list {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.main-service-item {
  width: 110px;
  text-align: center;
  text-decoration: none;
}

.main-service-icon-circle {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid #e5e7eb;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 10px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.main-service-icon-circle img {
  width: 54px;
  height: 54px;
  object-fit: contain;
}

.main-service-label {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
  margin: 0;
  word-break: keep-all;
  color: white;
}

.main-service-item:hover .main-service-icon-circle {
  transform: scale(1.05);
  transition: .2s;
}

/* 반응형 */
@media (max-width: 1000px) {
  .main-section-1 {
    height: 500px;
  }

  .main-title {
    font-size: 50px;
  }

  .main-title-sub {
    font-size: 34px;
  }

  .main-subtitle {
    font-size: 20px;
  }

  .main-section-3 {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .main-section-3-title {
    font-size: 26px;
  }

  .main-section-3-2-title {
    font-size: 18px;
  }
}

@media (max-width: 800px) {
  .main-section-1 {
    height: 440px;
  }

  .main-title {
    font-size: 44px;
  }

  .main-title-sub {
    font-size: 28px;
  }

  .main-subtitle {
    font-size: 18px;
  }

  .main-section-3-title {
    font-size: 24px;
    margin-bottom: 14px;
  }

  .main-data-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .main-section-2 {
    height: 280px;
  }

  .main-section-2-inner {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .main-section-3-1 {
    flex-direction: column;
    gap: 16px;
  }

  .main-section-3-2 {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (max-width: 684px) {
  .main-section-1 {
    height: 380px;
  }

  .main-title {
    font-size: 30px;
  }

  .main-title-sub {
    font-size: 22px;
  }

  .main-subtitle {
    font-size: 15px;
  }
}

/* 모바일 */
@media (max-width: 576px) {
  .main-section-1 {
    height: 280px;
  }

  .main-service-list {
    gap: 10px;
  }

  .main-data-section {
    margin: 40px auto;
  }

  .main-data-title {
    font-size: 26px;
  }

  .main-data-subtitle {
    font-size: 14px;
  }

  .main-data-grid {
    grid-template-columns: repeat(1, 1fr);
    gap: 16px;
  }

  .main-data-card {
    padding: 16px;
  }

  .main-section-2 {
    height: 250px;
  }

  .main-section-2-inner {
    gap: 0;
  }

  .main-section-3-2 {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
}