:root {
  --ai-bg: #ffffff;
  --ai-surface: #f6f8fb;
  --ai-border: #e5e9f0;
  --ai-text: #1a2233;
  --ai-text-sub: #4a5568;
  --ai-muted: #6b7280;
  --ai-primary: #0b3d91;
  --ai-primary-2: #1f6feb;
  --ai-accent: #00a3a3;
  --ai-radius-md: 12px;
  --ai-shadow-md: 0 6px 24px rgba(15, 23, 42, 0.08);
  --ai-wrap: 1160px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Segoe UI", Roboto, sans-serif;
  color: var(--ai-text);
  background: var(--ai-bg);
}

a {
  color: var(--ai-primary-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.ai-wrap {
  max-width: var(--ai-wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.ai-site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: #fff;
  border-bottom: 1px solid var(--ai-border);
}

.ai-head-inner {
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.ai-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ai-text);
}

.ai-brand:hover {
  text-decoration: none;
}

.ai-brand-mark {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: linear-gradient(120deg, var(--ai-primary), var(--ai-accent));
  color: #fff;
  font-weight: 800;
  font-size: 13px;
}

.ai-brand-text {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.ai-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.ai-nav a {
  color: #263042;
  font-size: 15px;
  font-weight: 700;
}

.ai-nav a:hover {
  color: var(--ai-primary);
}

.ai-breadcrumb {
  font-size: 13px;
  color: var(--ai-muted);
  padding: 20px 24px 0;
}

.ai-breadcrumb .sep {
  margin: 0 8px;
  color: #c5cad3;
}

.ai-hero {
  padding: 56px 0 48px;
  border-bottom: 1px solid var(--ai-border);
  background:
    radial-gradient(1200px 400px at 90% -10%, rgba(31, 111, 235, 0.08), transparent 60%),
    radial-gradient(800px 300px at 0% 0%, rgba(0, 163, 163, 0.06), transparent 60%);
}

.ai-hero-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ai-primary);
  background: rgba(11, 61, 145, 0.08);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.ai-hero h1 {
  font-size: clamp(32px, 4.4vw, 48px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}

.ai-hero p {
  font-size: clamp(15px, 1.4vw, 18px);
  color: var(--ai-text-sub);
  margin: 0 0 24px;
  max-width: 760px;
}

.ai-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 13px;
  color: var(--ai-muted);
}

.ai-hero-meta dt {
  font-weight: 700;
  color: var(--ai-text-sub);
}

.ai-hero-meta dd {
  margin: 0 16px 0 0;
}

.ai-section {
  padding: 56px 0;
}

.ai-section + .ai-section {
  border-top: 1px solid var(--ai-border);
}

.ai-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 800;
  color: var(--ai-primary);
  letter-spacing: 0.09em;
}

.ai-kicker::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--ai-primary);
}

.ai-section h2 {
  margin: 8px 0 10px;
  font-size: clamp(24px, 2.6vw, 30px);
  letter-spacing: -0.01em;
}

.ai-lead {
  margin: 0;
  color: var(--ai-text-sub);
  font-size: 15px;
  max-width: 760px;
}

.ai-role-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.ai-card {
  background: var(--ai-surface);
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius-md);
  padding: 28px;
  transition: transform .15s ease, box-shadow .15s ease;
}

.ai-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--ai-shadow-md);
}

.ai-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--ai-primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  margin-bottom: 12px;
}

.ai-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.ai-card p {
  margin: 0;
  font-size: 14.5px;
  color: var(--ai-text-sub);
}

.ai-research-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.ai-research {
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius-md);
  padding: 30px;
  position: relative;
  overflow: hidden;
}

.ai-research::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--ai-primary), var(--ai-accent));
}

.ai-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--ai-primary);
  background: rgba(11, 61, 145, 0.08);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.ai-research h3 {
  margin: 0 0 16px;
  font-size: 19px;
}

.ai-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.ai-list li {
  padding: 12px 0;
  border-top: 1px dashed var(--ai-border);
  color: var(--ai-text-sub);
  font-size: 14.5px;
}

.ai-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.ai-list strong {
  display: block;
  color: var(--ai-text);
  margin-bottom: 4px;
}

.ai-achievements {
  margin-top: 26px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
}

.ai-achv {
  background: var(--ai-surface);
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius-md);
  padding: 30px;
}

.ai-achv-kicker {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.09em;
  color: var(--ai-accent);
}

.ai-achv h3 {
  margin: 10px 0 8px;
  font-size: 20px;
}

.ai-achv p {
  margin: 0;
  color: var(--ai-text-sub);
  font-size: 14.5px;
}

.ai-stats {
  margin: 18px 0;
  display: flex;
  gap: 24px;
}

.ai-num {
  font-size: 32px;
  font-weight: 800;
  line-height: 1;
  color: var(--ai-primary);
}

.ai-num small {
  font-size: 14px;
  font-weight: 700;
}

.ai-num-label {
  margin-top: 6px;
  font-size: 12px;
  color: var(--ai-muted);
}

.ai-bullets {
  margin: 0;
  padding-left: 18px;
  color: var(--ai-text-sub);
  font-size: 14.5px;
}

.ai-bullets li {
  margin: 4px 0;
}

.ai-qr-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.ai-qr {
  border: 1px solid var(--ai-border);
  border-radius: var(--ai-radius-md);
  text-align: center;
  padding: 22px;
  background: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  transition: box-shadow .15s ease, border-color .15s ease;
}

.ai-qr:hover {
  border-color: var(--ai-primary-2);
  box-shadow: var(--ai-shadow-md);
}

.ai-qr img {
  width: 140px;
  height: 140px;
  border: 1px solid var(--ai-border);
  border-radius: 8px;
  padding: 8px;
  background: #fff;
}

.ai-qr-label {
  font-size: 13px;
  color: var(--ai-muted);
}

.ai-qr-name {
  font-size: 16px;
  color: var(--ai-text);
  font-weight: 800;
}

.ai-qr-cta {
  font-size: 13px;
  font-weight: 700;
}

.ai-lab-info {
  background: var(--ai-surface);
  border-top: 1px solid var(--ai-border);
  padding: 34px 0;
}

.ai-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  font-size: 13.5px;
}

.ai-info-grid dt {
  margin-bottom: 4px;
  font-weight: 700;
}

.ai-info-grid dd {
  margin: 0 0 10px;
  color: var(--ai-text-sub);
}

.ai-site-footer {
  border-top: 1px solid var(--ai-border);
  background: #fff;
}

.ai-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.ai-site-footer p {
  margin: 0;
  padding: 18px 0;
  font-size: 13px;
  color: var(--ai-muted);
  text-align: left;
  flex: 1;
}

.ai-cnp-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 10px 20px;
  color: #E07B39;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.ai-cnp-link:hover {
  border-color: #E07B39;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.10);
}

@media (max-width: 960px) {
  .ai-nav {
    display: none;
  }
  .ai-role-grid,
  .ai-research-grid,
  .ai-achievements {
    grid-template-columns: 1fr;
  }
  .ai-info-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .ai-wrap,
  .ai-breadcrumb {
    padding-left: 16px;
    padding-right: 16px;
  }
  .ai-section {
    padding: 40px 0;
  }
  .ai-hero {
    padding: 36px 0 30px;
  }
  .ai-qr-grid,
  .ai-info-grid {
    grid-template-columns: 1fr;
  }
  .ai-stats {
    gap: 16px;
  }
  .ai-num {
    font-size: 26px;
  }
}