:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --line: #d7dee8;
  --ink: #172433;
  --muted: #5f6f82;
  --accent: #1f3b63;
  --accent-soft: #e8eff8;
  --chip: #edf2f7;
  --shadow: 0 18px 40px rgba(17, 28, 45, 0.08);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  font-family: "SUIT", "Pretendard Variable", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(31, 59, 99, 0.08), transparent 30%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 28%, #f6f7f9 100%);
  line-height: 1.72;
}

a {
  color: inherit;
  text-decoration: none;
}

p,
ul,
ol,
blockquote,
dl {
  margin: 0;
}

.shell {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(245, 247, 251, 0.88);
  border-bottom: 1px solid rgba(215, 222, 232, 0.85);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
}

.brand {
  display: grid;
  gap: 2px;
}

.brand-kicker,
.brand-domain,
.eyebrow,
.meta-line,
.info-card span,
.footer-notes,
.site-nav a,
.mini-contact {
  letter-spacing: 0.01em;
}

.brand-kicker,
.brand-domain,
.eyebrow,
.meta-line,
.footer-notes,
.info-card span,
.site-nav a,
.mini-contact,
.text-link {
  font-size: 0.84rem;
  color: var(--muted);
}

.brand strong {
  font-size: 1rem;
  color: var(--accent);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.site-nav a {
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}

.site-nav a[aria-current="page"] {
  color: var(--accent);
  border-color: var(--accent);
}

.mini-contact {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
}

main.shell {
  padding: 26px 0 64px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
  font-size: 0.84rem;
  color: var(--muted);
}

.hero-card,
.panel,
.info-card,
.faq-card {
  background: var(--panel);
  border: 1px solid rgba(215, 222, 232, 0.92);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(240px, 0.95fr);
  gap: 24px;
  padding: 30px;
  margin-bottom: 24px;
}

.hero-copy h1,
.page-header h1 {
  margin: 8px 0 14px;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.16;
  letter-spacing: -0.03em;
}

.lead {
  max-width: 760px;
  font-size: 1.02rem;
  color: var(--muted);
}

.hero-aside {
  display: grid;
  align-content: start;
  gap: 14px;
  padding: 22px;
  background: linear-gradient(180deg, #f8fbff 0%, #eef3f9 100%);
  border: 1px dashed var(--line);
  border-radius: calc(var(--radius) - 4px);
}

.stamp {
  display: inline-flex;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--chip);
  color: var(--accent);
  font-size: 0.84rem;
}

.layout-grid,
.two-up {
  display: grid;
  gap: 24px;
}

.layout-grid {
  grid-template-columns: minmax(0, 1.65fr) minmax(260px, 0.95fr);
  margin-bottom: 24px;
}

.panel {
  padding: 24px;
}

.article-panel > * + * {
  margin-top: 16px;
}

.article-panel h2,
.panel h2,
.section-head h2 {
  margin: 0 0 10px;
  font-size: 1.35rem;
  line-height: 1.28;
}

.article-panel h3 {
  margin: 22px 0 10px;
  font-size: 1.05rem;
}

.article-panel ul,
.article-panel ol,
.plain-list,
.question-list {
  padding-left: 20px;
}

.article-panel li + li,
.plain-list li + li,
.question-list li + li {
  margin-top: 9px;
}

.article-panel blockquote {
  padding: 14px 16px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  color: var(--ink);
}

.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 18px;
  color: var(--muted);
}

.section-block {
  margin-top: 30px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
  margin-bottom: 16px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.info-card {
  display: grid;
  gap: 10px;
  padding: 22px;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.info-card:hover {
  transform: translateY(-2px);
  border-color: #bac8d6;
}

.info-card strong {
  font-size: 1.02rem;
  line-height: 1.34;
}

.info-card p {
  color: var(--muted);
  font-size: 0.95rem;
}

.page-frame {
  display: grid;
  gap: 18px;
}

.page-header {
  padding: 10px 2px 0;
}

.faq-stack {
  display: grid;
  gap: 16px;
}

.faq-card h2 {
  margin: 0 0 10px;
  font-size: 1.12rem;
}

.profile-list {
  display: grid;
  gap: 12px;
}

.profile-list div {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.profile-list dt {
  color: var(--muted);
  font-size: 0.84rem;
}

.profile-list dd {
  margin: 0;
}

.site-footer {
  border-top: 1px solid rgba(215, 222, 232, 0.92);
  background: rgba(255, 255, 255, 0.75);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0 12px;
}

.footer-grid p {
  max-width: 640px;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-notes {
  padding: 0 0 28px;
  color: var(--muted);
}

.footer-notes p + p {
  margin-top: 6px;
}

code {
  padding: 2px 6px;
  border-radius: 8px;
  background: var(--chip);
  font-family: "JetBrains Mono", "Consolas", monospace;
  font-size: 0.92em;
}

@media (max-width: 900px) {
  .hero-card,
  .layout-grid,
  .two-up,
  .footer-grid,
  .header-row {
    grid-template-columns: 1fr;
    display: grid;
  }

  .header-row {
    justify-items: start;
  }

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

@media (max-width: 640px) {
  .shell {
    width: min(100% - 20px, 1040px);
  }

  .site-nav {
    gap: 12px;
  }

  .hero-card,
  .panel,
  .faq-card,
  .info-card {
    padding: 18px;
  }

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

  .hero-copy h1,
  .page-header h1 {
    font-size: 1.8rem;
  }
}