:root {
  --surface: #ffffff;
  --surface-alt: #edf4ff;
  --text: #132238;
  --muted: #5c6b80;
  --line: #d7e1ef;
  --brand: #0d4fd8;
  --brand-dark: #083caa;
  --shadow: 0 18px 50px rgba(17, 36, 69, 0.10);
  --radius: 24px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f7faff 0%, #f4f6fb 55%, #eef3f9 100%);
  line-height: 1.72;
}
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-dark); }
.shell { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(247, 250, 255, 0.92);
  border-bottom: 1px solid rgba(215, 225, 239, 0.75);
}
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0;
}
.brand { display: inline-flex; align-items: baseline; gap: 10px; font-weight: 800; color: var(--text); }
.brand-mark { font-size: 1.15rem; letter-spacing: 0.04em; text-transform: uppercase; }
.brand-text { font-size: 1rem; color: var(--brand); }
.main-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 14px 18px; font-size: 0.95rem; }
.hero { padding: 76px 0 36px; }
.hero-panel { display: grid; grid-template-columns: 1.35fr 0.95fr; gap: 24px; align-items: stretch; }
.hero-copy, .hero-side, .section-card, .card, .callout, .checklist, .info-box, .quote-box {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-copy { padding: 34px; }
.hero-side { padding: 28px; background: linear-gradient(180deg, #0f3b8e 0%, #0d4fd8 100%); color: #f7fbff; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brand);
}
.eyebrow a { color: inherit; }
h1, h2, h3 { margin: 0 0 14px; line-height: 1.24; }
h1 { font-size: clamp(2rem, 3vw, 3.2rem); margin-top: 18px; }
h2 { font-size: clamp(1.55rem, 2vw, 2.2rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 14px; color: var(--muted); }
.hero-actions, .stats-list { display: flex; flex-wrap: wrap; gap: 12px; }
.button, .secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 700;
}
.button { background: var(--brand); color: #fff; }
.button:hover { background: var(--brand-dark); color: #fff; }
.secondary-button { border: 1px solid var(--line); color: var(--text); background: #fff; }
.secondary-button:hover { border-color: var(--brand); color: var(--brand); }
.stats-list { margin-top: 18px; }
.stat {
  flex: 1 1 120px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.stat strong { display: block; font-size: 1.5rem; margin-bottom: 4px; color: #fff; }
.section { padding: 22px 0 10px; }
.section-card { padding: 30px; }
.grid-2, .grid-3, .grid-4, .cards { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3, .cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card { padding: 24px; }
.card h3 a { color: var(--text); }
.card h3 a:hover { color: var(--brand); }
.text-link { font-weight: 700; }
.checklist { padding: 24px 26px; }
.checklist ul, .footer-list, .bullet-list { margin: 0; padding-left: 18px; }
.checklist li, .bullet-list li { margin: 0 0 10px; color: var(--muted); }
.note-strip {
  margin: 16px 0 0;
  padding: 16px 18px;
  border-radius: 18px;
  background: var(--surface-alt);
  border: 1px solid #d2dff6;
  color: #28416b;
}
.split { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 18px; }
.callout, .info-box, .quote-box { padding: 24px; }
.callout { background: linear-gradient(180deg, #f4f8ff 0%, #ffffff 100%); }
.quote-box { background: #0f1e33; }
.quote-box p, .quote-box h3 { color: #f4f7fb; }
.quote-box .eyebrow { color: #9dc0ff; }
.contact-list { display: grid; gap: 14px; }
.contact-item { padding: 16px 18px; border-radius: 16px; border: 1px solid var(--line); background: #fff; }
.site-footer { margin-top: 48px; padding: 40px 0 24px; background: #0f1c2f; color: #dae4f3; }
.site-footer h3, .site-footer a { color: #f5f8fd; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 0.8fr 0.8fr 0.8fr; gap: 24px; }
.footer-brand { font-size: 1.1rem; font-weight: 800; margin-bottom: 14px; }
.footer-copy { color: #a8b8cf; font-size: 0.95rem; }
.footer-list li { margin-bottom: 8px; color: #a8b8cf; }
.footer-bottom { margin-top: 24px; padding-top: 18px; border-top: 1px solid rgba(168, 184, 207, 0.2); }
.footer-bottom p { color: #a8b8cf; font-size: 0.9rem; }
.compact-list { display: grid; gap: 12px; }
.compact-list a {
  display: block;
  padding: 14px 16px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  color: var(--text);
  font-weight: 700;
}
.compact-list a span { display: block; margin-top: 4px; color: var(--muted); font-weight: 400; font-size: 0.94rem; }
.muted { color: var(--muted); }
.trust-bar { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-top: 18px; }
.trust-item { padding: 14px 16px; border-radius: 18px; border: 1px solid var(--line); background: #fff; }
.trust-item strong { display: block; margin-bottom: 6px; }
.page-intro { padding: 60px 0 12px; }
.page-intro .section-card { padding: 34px; }
.micro { font-size: 0.92rem; }
.audit-grid, .faq-grid { display: grid; gap: 18px; }
.audit-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.faq-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.audit-card, .faq-card, .article-author, .source-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.audit-card, .faq-card, .source-card { padding: 24px; }
.timeline { display: grid; gap: 14px; }
.timeline-item {
  padding: 18px 20px;
  border-radius: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.timeline-item strong { display: block; margin-bottom: 6px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--surface-alt);
  border: 1px solid #d2dff6;
  color: #28416b;
  font-size: 0.88rem;
  font-weight: 700;
}
.article-author {
  margin: 22px 0 0;
  padding: 20px 22px;
  background: linear-gradient(180deg, #f7faff 0%, #ffffff 100%);
}
.article-author p:last-child, .faq-card p:last-child, .audit-card p:last-child, .source-card p:last-child { margin-bottom: 0; }
.source-list { display: grid; gap: 18px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.source-card h3 { margin-bottom: 8px; }
.source-card .micro { color: var(--muted); }
.status-list { display: grid; gap: 12px; margin-top: 14px; }
.status-item {
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--surface-alt);
  border: 1px solid #d2dff6;
}
.status-item strong { display: block; margin-bottom: 4px; }
.article-wrap { padding: 56px 0 18px; }
.article-shell { display: grid; grid-template-columns: minmax(0, 1.35fr) 320px; gap: 20px; align-items: start; }
.article-main, .article-side, .calc-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.article-main { padding: 34px; }
.article-side { padding: 24px; position: sticky; top: 96px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 10px 14px; margin: 18px 0; color: var(--muted); font-size: 0.94rem; }
.article-lead { font-size: 1.06rem; color: #33445f; }
.takeaway-list { display: grid; gap: 12px; margin: 22px 0 0; }
.takeaway-item {
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: var(--surface-alt);
  color: #28416b;
}
.article-section + .article-section { margin-top: 32px; }
.article-section h2 { margin-bottom: 12px; }
.article-section ul { margin: 14px 0 0; padding-left: 18px; }
.article-section li { margin-bottom: 10px; color: var(--muted); }
.article-divider { height: 1px; margin: 28px 0; background: var(--line); }
.article-related { margin-top: 30px; }
.article-extra { margin-top: 30px; }
.resource-grid, .tool-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.resource-card, .calc-card { padding: 24px; }
.resource-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.resource-card h3, .calc-card h3 { margin-bottom: 10px; }
.resource-card p, .calc-card p { margin-bottom: 12px; }
.field-grid { display: grid; gap: 12px; }
.field-row { display: grid; gap: 6px; }
.field-row label { font-weight: 700; color: var(--text); }
.field-row input, .field-row select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  font: inherit;
  color: var(--text);
  background: #fff;
}
.calc-result {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--surface-alt);
  border: 1px solid #d2dff6;
  color: #28416b;
  font-weight: 700;
}
.external-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  font-weight: 700;
}
@media (max-width: 960px) {
  .hero-panel, .split, .grid-4, .grid-3, .cards, .grid-2, .footer-grid, .trust-bar, .article-shell, .resource-grid, .tool-grid, .audit-grid, .faq-grid, .source-list { grid-template-columns: 1fr; }
  .header-row { flex-direction: column; align-items: flex-start; }
  .main-nav { justify-content: flex-start; }
  .article-side { position: static; }
}