/* ===== BIG DATA·AI Page ===== */

/* Hero */
.data-hero .hero-content {
  padding: 0 20px 80px;
}

.data-hero-title {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.05em;
}

/* Big Data Intelligence Center */
.data-intro-section {
  padding: 60px 0 40px;
  background: #fff;
}

.data-section-title {
  font-size: 48px;
  font-weight: 700;
  color: #222;
  text-align: center;
  margin-bottom: 16px;
}

.data-section-desc {
  font-size: 16px;
  color: #555;
  text-align: center;
  margin: 0;
  line-height: 1.7;
}

/* Core Services */
.core-services-section {
  padding: 40px 0 80px;
  /* background: #f8f9fa; */
}

.core-services-title {
  font-size: 36px;
  font-weight: 700;
  color: #222;
  text-align: center;
  margin-bottom: 12px;
}

.core-services-desc {
  font-size: 16px;
  color: #666;
  text-align: center;
  margin-bottom: 48px;
  line-height: 1.6;
}

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

.core-card {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.2s ease;
}

.core-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.core-card-image {
  width: 100%;
  height: 160px;
  overflow: hidden;
}

.core-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.core-card-title {
  font-size: 20px;
  font-weight: 700;
  color: #222;
  margin: 20px 20px 15px;
  padding-left: 12px;
  border-left: 6px solid #0066cc;
}

.core-card-blue {
  border-left-color: #0066cc;
}

.core-card-green {
  border-left-color: #00a86b;
}

.core-card-red {
  border-left-color: #e53935;
}

.core-card-darkgreen {
  border-left-color: #2e7d32;
}

.core-card-purple {
  border-left-color: #7b1fa2;
}

.core-card-desc {
  font-size: 16px;
  color: #555;
  line-height: 1.5;
  margin: 0 20px 16px;
  letter-spacing: -0.02em;
}

.core-card-list {
  list-style: none;
  padding: 0 20px 20px;
  margin: 0;
}

.core-card-list li {
  font-size: 16px;
  color: #666;
  line-height: 1.6;
  padding-left: 14px;
  margin-bottom: 6px;
  position: relative;
  letter-spacing: -0.02em;
}

.core-card-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: #999;
}

/* ===== Mobile ===== */
@media (max-width: 768px) {
  .data-hero {
    min-height: 50vh;
    height: 390px;
  }

  .data-hero .hero-content {
    padding-bottom: 40px;
    align-items: flex-end;
  }

  .data-hero-title {
    font-size: 24px;
  }

  .data-intro-section {
    padding: 40px 0 24px;
  }

  .data-section-title {
    font-size: 22px;
  }

  .data-section-desc {
    font-size: 14px;
  }

  .core-services-section {
    padding: 32px 0 60px;
  }

  .core-services-title {
    font-size: 22px;
  }

  .core-services-desc {
    font-size: 14px;
    margin-bottom: 32px;
  }

  .core-services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .core-card-image {
    height: 140px;
  }

  .core-card-title {
    font-size: 16px;
    margin: 16px 16px 16px;
  }

  .core-card-desc,
  .core-card-list {
    margin-left: 16px;
    margin-right: 16px;
    font-size: 14px;
    letter-spacing: -0.02em;
  }

  .core-card-list {
    padding-bottom: 16px;
  }

  .core-card-list li {
    font-size: 14px;
  }
}