/* FELSEN / Korean-first reading and a clear route from evidence to inquiry. */
@font-face {
  font-family: "Pretendard Variable";
  src: url("fonts/PretendardVariable.woff2") format("woff2");
  font-weight: 45 920; font-style: normal; font-display: swap;
}
:root {
  --sans: "Pretendard Variable", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", Arial, sans-serif;
  --surface: #e8e7e1;
  --surface-raised: #e7e5ef;
  --control-line: #8c8c88;
}
body { font-family: var(--sans); }
button, input, textarea, select { font-family: inherit; }
.site-header { min-height: 88px; gap: 24px; }
.desktop-nav { font-size: 13px; gap: 24px; margin-right: 0; }
.desktop-nav a { display: inline-flex; align-items: center; min-height: 44px; }
.header-contact {
  width: auto; min-width: 106px; min-height: 44px; height: auto;
  padding: 11px 16px; border-radius: 2px; transform: none;
  font-size: 13px; font-weight: 600; gap: 12px;
}
.header-contact span { font-size: 19px; }
.button, .text-link { min-height: 44px; font-size: 15px; line-height: 1.7; }
.button { border-radius: 2px; }
.text-link { display: inline-flex; align-items: center; gap: 15px; }
.page-head { display: flex; flex-direction: column; padding-top: 38px; padding-bottom: 48px; }
.page-head .page-eyebrow { order: 0; font-size: 11px; }
.page-head .page-intro { order: 1; margin-top: 35px; grid-template-columns: 1.1fr 1fr; gap: 48px; }
.page-head h1 { font-size: clamp(36px, 4vw, 58px); line-height: 1.3; letter-spacing: -.045em; font-weight: 600; }
.page-head .page-intro > p { font-size: 16px; line-height: 1.85; max-width: 35em; }
.page-head .page-display {
  order: 2; font-size: 22px; line-height: 1.5; letter-spacing: -.025em;
  margin-top: 25px; color: var(--muted);
}
.page-eyebrow a { min-height: 32px; display: inline-flex; align-items: center; }
.company-position p, .company-principles p, .foundation-list dd,
.experience-description p, .experience-feature p, .case-heading > p, .case-entry-heading > p,
.case-narrative p, .case-explanation p, .case-retest p, .approach-intro > p,
.process-list p, .lab-heading > p, .report-download-copy > p,
.cases-intro-note p, .case-intro-note p, .case-note, .case-context p {
  font-size: 16px; line-height: 1.9;
}
.foundation-list dt, .experience-description > .mono,
.experience-caption, .experience-home-foot, .confidential-tag { font-size: 12px; line-height: 1.7; }
.company-principles h2, .process-list h3 { font-size: 23px; line-height: 1.5; }
.case-narrative h3, .case-explanation h3 { font-size: 18px; line-height: 1.6; }
.case-evidence dl, .case-retest li, .case-evidence p { font-size: 14px; line-height: 1.8; }
.case-evidence pre { font-size: 13px; }
.case-evidence summary { min-height: 48px; font-size: 14px; }
.case-index > a { min-height: 48px; font-size: 15px; }
.detail-cta { margin-top: 42px; gap: 32px; }
.detail-cta h2 { font: 550 clamp(24px, 2.5vw, 36px)/1.5 var(--sans); letter-spacing: -.035em; }
.detail-cta p { font-size: 15px; line-height: 1.8; max-width: 45em; }
.detail-cta .button { flex-shrink: 0; }
.footer-bottom p, .footer-links, .footer-bottom > .mono { font-size: 12px; line-height: 1.85; }
.footer-links a, .footer-links button { min-height: 44px; display: inline-flex; align-items: center; }
.report-content { font-size: 15px; }
.sample-disclaimer, .report-fields dd, .report-note, .report-content > p { font-size: 15px; line-height: 1.85; }
.report-fields dt, .report-file-meta { font-size: 13px; }
.report-actions a { min-height: 44px; font-size: 14px; }
.report-preview { margin: 32px 0 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.report-preview > summary {
  display: flex; justify-content: space-between; align-items: center; gap: 22px;
  min-height: 60px; padding: 15px 0; cursor: pointer; list-style: none;
  font-size: 16px; font-weight: 550; line-height: 1.7;
}
.report-preview > summary::-webkit-details-marker { display: none; }
.report-preview > summary::after { content: "+"; font-size: 25px; color: var(--orange); }
.report-preview[open] > summary::after { content: "−"; }
.report-preview-intro { font-size: 14px; color: var(--muted); line-height: 1.8; padding-bottom: 25px; }
.report-preview-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 32px; padding-bottom: 30px; }
.report-preview figure { margin: 0; min-width: 0; }
.report-preview figure > a { display: block; border: 1px solid var(--line); background: #fff; }
.report-preview img { display: block; width: 100%; height: auto; }
.report-preview figcaption { font-size: 14px; line-height: 1.8; margin-top: 16px; }
.report-preview figcaption strong { display: block; font-weight: 600; }
.report-preview figcaption span { display: block; margin-top: 5px; color: var(--muted); }
.report-preview figcaption a { display: inline-flex; align-items: center; min-height: 44px; color: var(--orange); text-decoration: underline; text-underline-offset: 4px; }
.evidence-bridge { padding: 32px 0 42px; border-top: 1px solid var(--line); }
.evidence-bridge > p { max-width: 44em; margin-top: 15px; font-size: 16px; line-height: 1.85; color: var(--muted); }
.evidence-bridge h2 { font-size: 29px; line-height: 1.5; }
.evidence-bridge .evidence-actions { display: flex; flex-wrap: wrap; gap: 10px 28px; margin-top: 20px; }
.journal-curation {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  display: grid; grid-template-columns: .7fr 1.3fr; gap: 50px; padding: 30px 0; margin-bottom: 36px;
}
.journal-curation .mono { font-size: 11px; color: var(--orange); }
.journal-curation h2 { font-size: 25px; margin-top: 12px; line-height: 1.5; }
.journal-curation p { font-size: 16px; line-height: 1.85; color: var(--muted); }
.journal-curation .text-link { margin-top: 12px; }
@media screen and (prefers-color-scheme: dark) {
  :root { --surface: #22232b; --surface-raised: #282932; --control-line: #747684; }
}
@media screen and (max-width: 1050px) {
  .site-header { min-height: 80px; }
  .menu-toggle { min-width: 44px; min-height: 44px; justify-content: center; }
  .page-head .page-intro { gap: 30px; }
  .detail-cta { flex-wrap: wrap; }
}
@media screen and (max-width: 620px) {
  .site-header { height: 80px; gap: 10px; padding-left: 20px; padding-right: 20px; }
  .wordmark { width: clamp(112px, 32vw, 154px); }
  .header-contact { min-width: 0; min-height: 44px; padding: 8px 10px; font-size: 12px; gap: 7px; }
  .header-contact span { font-size: 17px; }
  .menu-toggle { width: 36px; min-width: 36px; padding: 8px 7px; }
  #mobile-nav a { font-size: 18px; min-height: 48px; }
  .page-head { padding-top: 24px; padding-bottom: 34px; }
  .page-head .page-eyebrow { font-size: 10px; }
  .page-head .page-intro { display: block; margin-top: 25px; }
  .page-head h1 { font-size: clamp(31px, 8.5vw, 40px); line-height: 1.4; }
  .page-head .page-intro > p { margin-top: 22px; font-size: 16px; line-height: 1.85; }
  .page-head .page-display { font-size: 19px; margin-top: 20px; }
  .company-position p, .company-principles p, .foundation-list dd,
  .experience-description p, .experience-feature p, .case-heading > p, .case-entry-heading > p,
  .case-narrative p, .case-explanation p, .case-retest p, .approach-intro > p,
  .process-list p, .lab-heading > p, .report-download-copy > p { font-size: 15px; }
  .foundation-list dt, .confidential-tag { font-size: 12px; }
  .detail-cta { padding: 27px 23px; gap: 24px; }
  .detail-cta h2 { font-size: 25px; }
  .detail-cta p { font-size: 15px; }
  .report-preview > summary { font-size: 15px; }
  .report-preview-grid { grid-template-columns: minmax(0,1fr); gap: 30px; }
  .evidence-bridge h2 { font-size: 25px; }
  .evidence-bridge > p { font-size: 15px; }
  .journal-curation { grid-template-columns: minmax(0,1fr); gap: 20px; padding: 25px 0; }
  .journal-curation h2 { font-size: 24px; }
  .footer-bottom p, .footer-links { font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; }
}
@media print {
  .page-head .page-display, .report-preview { display: none; }
}