:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: #172554;
  background: #eef4ff;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 85% 10%, rgba(59, 130, 246, 0.24), transparent 32rem),
    radial-gradient(circle at 12% 88%, rgba(14, 165, 233, 0.18), transparent 28rem),
    #eef4ff;
}

.shell {
  width: min(100% - 2rem, 68rem);
  min-height: 100vh;
  margin: 0 auto;
  padding: clamp(3rem, 10vw, 7rem) 0 2rem;
}

.hero {
  max-width: 46rem;
}

.mark {
  display: grid;
  width: 4.5rem;
  height: 5rem;
  place-items: center;
  margin-bottom: 1.75rem;
  border-radius: 1.15rem 1.15rem 2rem 2rem;
  color: #ffffff;
  background: linear-gradient(145deg, #2563eb, #172554);
  box-shadow: 0 1rem 2.5rem rgba(30, 64, 175, 0.28);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: #2563eb;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(3rem, 10vw, 6.7rem);
  line-height: 0.98;
  letter-spacing: -0.07em;
}

.lead {
  max-width: 41rem;
  margin: 2rem 0 0;
  color: #475569;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  line-height: 1.7;
  word-break: keep-all;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: clamp(3rem, 8vw, 6rem);
}

article {
  min-height: 15rem;
  padding: 1.6rem;
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 1.5rem;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 1.1rem 3rem rgba(30, 64, 175, 0.08);
  backdrop-filter: blur(16px);
}

article span {
  display: block;
  color: #2563eb;
  font-size: 2.5rem;
  font-weight: 850;
  letter-spacing: -0.06em;
}

h2 {
  margin: 1.6rem 0 0.65rem;
  font-size: 1.2rem;
  letter-spacing: -0.035em;
}

article p,
footer p {
  margin: 0;
  color: #64748b;
  line-height: 1.7;
  word-break: keep-all;
}

footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(37, 99, 235, 0.14);
  font-size: 0.88rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 0.75rem;
}

a {
  color: #1d4ed8;
  text-underline-offset: 0.18em;
}

.legal {
  width: min(100% - 2rem, 52rem);
  padding-top: clamp(2rem, 6vw, 4rem);
}

.back {
  display: inline-block;
  margin-bottom: 3rem;
  font-weight: 750;
  text-decoration: none;
}

.page-header h1 {
  font-size: clamp(2.6rem, 8vw, 5rem);
}

.updated {
  margin: 1.25rem 0 0;
  color: #64748b;
  font-size: 0.92rem;
}

.legal section,
.notice {
  margin-top: 1.25rem;
  padding: clamp(1.3rem, 4vw, 2rem);
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 1.35rem;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 1rem 2.5rem rgba(30, 64, 175, 0.06);
}

.legal section:first-of-type,
.notice {
  margin-top: 3rem;
}

.legal section h2 {
  margin: 0 0 0.8rem;
  color: #172554;
  font-size: 1.25rem;
}

.legal section h3 {
  margin: 1.4rem 0 0.5rem;
  color: #334155;
  font-size: 1rem;
}

.legal section p,
.legal section li,
.notice p {
  color: #475569;
  line-height: 1.8;
  word-break: keep-all;
}

.legal section p,
.notice p {
  margin: 0.65rem 0 0;
}

.legal section ul {
  margin: 0.7rem 0 0;
  padding-left: 1.25rem;
}

.notice {
  border-color: rgba(14, 165, 153, 0.22);
  background: rgba(240, 253, 250, 0.92);
}

.notice strong {
  color: #0f766e;
}

.contact-button {
  display: inline-flex;
  margin-top: 0.5rem;
  padding: 0.8rem 1rem;
  border-radius: 0.85rem;
  color: #ffffff;
  background: #1d4ed8;
  font-weight: 780;
  text-decoration: none;
}

@media (max-width: 720px) {
  .shell {
    padding-top: 3.5rem;
  }

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

  article {
    min-height: auto;
  }
}

@media (prefers-reduced-motion: no-preference) {
  article {
    transition: transform 180ms ease, box-shadow 180ms ease;
  }

  article:hover {
    transform: translateY(-0.25rem);
    box-shadow: 0 1.35rem 3.5rem rgba(30, 64, 175, 0.13);
  }
}