:root {
  color-scheme: light dark;
  --page: #f5f7f5;
  --surface: #ffffff;
  --surface-soft: #edf5f0;
  --text: #17211b;
  --muted: #5b675f;
  --line: #d8e0da;
  --brand: #087a49;
  --brand-strong: #055f39;
  --focus: #0067c5;
  --max-width: 70rem;
  font-family: Inter, Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page);
  scroll-behavior: smooth;
}

body {
  min-width: 20rem;
  margin: 0;
  color: var(--text);
  background: var(--page);
  font-size: 1rem;
  line-height: 1.72;
  text-align: start;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

a {
  color: var(--brand-strong);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 0.08em;
}

a:hover {
  color: var(--brand);
}

:where(a):focus-visible {
  outline: 0.1875rem solid var(--focus);
  outline-offset: 0.1875rem;
  border-radius: 0.125rem;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 0.75rem;
  left: 0.75rem;
  transform: translateY(-200%);
  padding: 0.65rem 0.9rem;
  color: #ffffff;
  background: #17211b;
  border-radius: 0.4rem;
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(calc(100% - 2rem), var(--max-width));
  margin-inline: auto;
}

.site-header {
  border-bottom: 0.0625rem solid var(--line);
  background: color-mix(in srgb, var(--page) 92%, transparent);
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.header-inner {
  min-height: 4.5rem;
}

.wordmark {
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-list a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
}

.hero {
  padding-block: clamp(5rem, 12vw, 9rem);
}

.hero h1,
.policy-header h1,
.error-page h1 {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(2.3rem, 7vw, 5rem);
  line-height: 1.06;
  letter-spacing: -0.055em;
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--brand-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.lede {
  max-width: 42rem;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  line-height: 1.6;
}

.notice {
  display: inline-block;
  margin: 2rem 0 0;
  padding: 0.6rem 0.85rem;
  color: var(--muted);
  background: var(--surface-soft);
  border: 0.0625rem solid var(--line);
  border-radius: 0.5rem;
  font-size: 0.88rem;
}

.section {
  padding-block: clamp(3.5rem, 8vw, 6rem);
  border-top: 0.0625rem solid var(--line);
}

.section > h2,
.principle h2 {
  max-width: 24ch;
  margin: 0 0 2rem;
  font-size: clamp(1.7rem, 4vw, 2.7rem);
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  min-height: 15rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 0.0625rem solid var(--line);
  border-radius: 0.9rem;
}

.card-number {
  margin: 0 0 2.5rem;
  color: var(--brand);
  font-size: 0.8rem;
  font-weight: 800;
}

.card h3 {
  margin: 0 0 0.65rem;
  font-size: 1.15rem;
}

.card p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.principle {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 2rem 4rem;
}

.principle .check-list,
.principle > p {
  grid-column: 2;
}

.check-list {
  margin: 0;
  padding-left: 1.3rem;
}

.check-list li + li {
  margin-top: 0.85rem;
}

.text-link {
  font-weight: 750;
}

.policy-layout {
  padding-block: clamp(3.5rem, 8vw, 7rem);
}

.policy {
  max-width: 48rem;
  margin-inline: auto;
}

.policy-header {
  padding-bottom: 3rem;
}

.policy-header h1 {
  max-width: 13ch;
  font-size: clamp(2.25rem, 6vw, 4.4rem);
}

.policy-meta,
.contact-list {
  display: grid;
  gap: 0.75rem;
  margin: 2.25rem 0 0;
}

.policy-meta div,
.contact-list div {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: 1rem;
}

.policy-meta dt,
.contact-list dt {
  color: var(--muted);
}

.policy-meta dd,
.contact-list dd {
  margin: 0;
  font-weight: 650;
}

.summary-card,
.toc {
  margin: 0 0 3rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 0.0625rem solid var(--line);
  border-radius: 0.9rem;
}

.summary-card h2,
.toc h2 {
  margin-top: 0;
  font-size: 1.2rem;
}

.summary-card ul,
.toc ol {
  margin-bottom: 0;
  padding-left: 1.25rem;
}

.summary-card li + li,
.toc li + li {
  margin-top: 0.55rem;
}

.policy section {
  padding-block: 2.5rem;
  border-top: 0.0625rem solid var(--line);
  scroll-margin-top: 1rem;
}

.policy section h2 {
  margin: 0 0 1.25rem;
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  line-height: 1.3;
  letter-spacing: -0.025em;
}

.policy section h3 {
  margin: 2rem 0 0.75rem;
  font-size: 1.08rem;
}

.policy p,
.policy li {
  max-width: 76ch;
}

.policy ul {
  padding-left: 1.35rem;
}

.policy li + li {
  margin-top: 0.45rem;
}

.provider-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-block: 1.5rem;
}

.provider-list article {
  padding: 1.25rem;
  background: var(--surface);
  border: 0.0625rem solid var(--line);
  border-radius: 0.75rem;
}

.provider-list h3 {
  margin-top: 0;
}

.site-footer {
  padding-block: 2rem;
  color: var(--muted);
  border-top: 0.0625rem solid var(--line);
  font-size: 0.88rem;
}

.footer-inner p {
  margin: 0;
}

.error-page {
  min-height: 100vh;
  display: grid;
  align-content: center;
  justify-items: start;
  padding-block: 4rem;
}

@media (max-width: 48rem) {
  .card-grid,
  .principle,
  .provider-list {
    grid-template-columns: 1fr;
  }

  .principle .check-list,
  .principle > p {
    grid-column: 1;
  }

  .header-inner,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-inner {
    padding-block: 1rem;
  }

  .policy-meta div,
  .contact-list div {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #101511;
    --surface: #171e19;
    --surface-soft: #1b2a21;
    --text: #edf4ef;
    --muted: #b3c0b7;
    --line: #334139;
    --brand: #52d895;
    --brand-strong: #72e4aa;
    --focus: #70b7ff;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}