People.

/* ─────────────────────────────────────────────────────────────
   SDC Lab Design Kit — Components
   ─────────────────────────────────────────────────────────────
   Depends on tokens.css.
   Class prefix: `.sdc-*` on components, BEM-lite on sub-parts
   (`__element`, `--modifier`).
   ───────────────────────────────────────────────────────────── */


/* ═════════════ Base reset (minimal) ═════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { color-scheme: dark; }
body {
  background: var(--sdc-bg);
  color: var(--sdc-ink);
  font-family: var(--sdc-font-body-kr);
  font-size: var(--sdc-step-1);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.003em;
  overflow-x: hidden;
}


/* ═════════════ Language-aware visibility ═════════════
   Works with kit/lang-toggle.js, which sets <html lang="ko|en">.
   Wrap locale-specific spans like:
     <span class="only-kr">한글</span><span class="only-en">English</span>
   Untranslated Korean body prose has no marker, so it stays
   visible in both modes — honest fallback while a full English
   translation is in progress. */
:root[lang="ko"] .only-en,
:root[lang="en"] .only-kr {
  display: none !important;
}

/* Safety net — Korean has no real italics. Block synthetic oblique on
   any Korean-tagged text, regardless of which class applied italic. */
:root[lang="ko"] em,
[lang="ko"] em {
  font-style: normal;
  font-weight: 600;
  color: var(--sdc-ink-strong);
}

/* ═════════════ Global :focus-visible ═════════════
   Default keyboard-focus ring for every interactive element.
   Component-level rules (.sdc-chip--toggle:focus-visible,
   .sdc-index-item a:focus-visible, etc.) explicitly set
   `outline: none` + their own box-shadow/color treatment and
   override this by later-in-file specificity — intentional. */
:focus-visible {
  outline: 2px solid var(--sdc-accent);
  outline-offset: 2px;
  border-radius: 1px;
}

/* ═════════════ View Transitions — language toggle ═════════════
   When the KR/EN toggle fires document.startViewTransition(), the
   browser crossfades the before/after snapshots. Tuned to the
   brand's exponential easing + 0.25s (snappy, not flashy). */
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.25s;
  animation-timing-function: var(--sdc-ease-out-quint);
}


/* ═════════════ .sdc-contour ═════════════
   Topographic contour backdrop. Pair with contour.js.
   Respects prefers-reduced-motion (transition) and hover:none (parallax). */
.sdc-contour {
  position: fixed; inset: -4%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.14;
  transition: transform 1s var(--sdc-ease-out-quint), opacity 0.4s var(--sdc-ease-out-quint);
  will-change: transform;
}
/* When the user is actively dragging (easter egg), ditch the smoothing
   transition so the map sticks to the cursor 1:1, and bump opacity a
   little so they can feel what they're moving. */
.sdc-contour[data-dragging] {
  transition: none;
  opacity: 0.22;
}
/* Slow idle breath — lives on the inner SVG so it composes cleanly with
   the cursor parallax + user pan transform on the .sdc-contour wrapper.
   Scale is barely perceptible (±1.2%) but the overall page feels alive. */
.sdc-contour svg {
  width: 100%; height: 100%; display: block;
  transform-origin: 74% 56%;
  animation: sdc-contour-breath 6.5s cubic-bezier(0.45, 0, 0.55, 1) infinite alternate;
  will-change: transform, opacity;
}
@keyframes sdc-contour-breath {
  from { transform: scale(1.000); opacity: 1.00; }
  to   { transform: scale(1.012); opacity: 0.88; }
}
@media (prefers-reduced-motion: reduce) {
  .sdc-contour svg { animation: none; }
}
.sdc-contour path { fill: none; stroke: var(--sdc-ink); stroke-width: 0.55; }


/* ═════════════ .sdc-marginalia ═════════════
   Vertical rotated note pinned to right page margin. */
.sdc-marginalia {
  position: fixed;
  right: clamp(12px, 1.4vw, 22px);
  top: 50%;
  transform: translateY(-50%) rotate(90deg);
  transform-origin: right center;
  font-family: var(--sdc-font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--sdc-muted);
  text-transform: uppercase;
  z-index: 2;
  white-space: nowrap;
  pointer-events: none;
}
@media (max-width: 960px) { .sdc-marginalia { display: none; } }


/* ═════════════ .sdc-topbar ═════════════
   Horizontal top bar. Wordmark left + meta nav right.
   Wraps on small viewports. */
.sdc-topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sdc-space-6);
  flex-wrap: wrap;
  row-gap: 12px;
}
@media (max-width: 600px) {
  /* When meta nav wraps under the wordmark, anchor both to the left
     so the eye doesn't have to jump between edges. */
  .sdc-topbar { justify-content: flex-start; gap: var(--sdc-space-4); row-gap: 10px; }
  .sdc-topbar-meta { gap: 14px; flex-wrap: wrap; }
}

.sdc-wordmark {
  font-family: var(--sdc-font-display-latin);
  font-size: clamp(13px, 0.4vw + 12px, 16px);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sdc-ink-strong);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.sdc-wordmark-mark {
  display: inline-block;
  width: 7px; height: 7px;
  background: var(--sdc-accent);
}
a.sdc-wordmark {
  text-decoration: none;
  transition: color var(--sdc-dur-fast) var(--sdc-ease-out-quint);
}
a.sdc-wordmark:hover { color: var(--sdc-accent); }
a.sdc-wordmark:focus-visible {
  outline: none;
  color: var(--sdc-accent);
  box-shadow: 0 2px 0 0 var(--sdc-accent);
}

.sdc-topbar-meta {
  font-family: var(--sdc-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--sdc-muted);
  display: flex;
  gap: clamp(14px, 2.2vw, 32px);
  align-items: baseline;
}
.sdc-topbar-meta .dept  {
  color: var(--sdc-ink);
  /* Korean text belongs in Paperlogy, not JetBrains Mono (which has no Hangul anyway). */
  font-family: var(--sdc-font-body-kr);
  font-size: 13px;
  letter-spacing: 0;
}
.sdc-topbar-meta .arrow { color: var(--sdc-accent); margin-left: 4px; }

.sdc-lang-toggle {
  display: inline-flex;
  gap: 6px;
  align-items: baseline;
  font-variant-numeric: tabular-nums;
}
.sdc-lang-toggle button {
  background: none; border: none; padding: 0;
  font: inherit;
  color: var(--sdc-muted);
  cursor: pointer;
  transition: color var(--sdc-dur-fast) var(--sdc-ease-out-quint);
}
.sdc-lang-toggle button:hover { color: var(--sdc-ink); }
.sdc-lang-toggle button:focus-visible {
  outline: none;
  color: var(--sdc-ink);
  box-shadow: 0 1px 0 0 var(--sdc-accent);
}
.sdc-lang-toggle .active    { color: var(--sdc-ink); }
.sdc-lang-toggle .divider   { color: var(--sdc-rule); }


/* ═════════════ .sdc-overline ═════════════
   Mono label preceded by a 36px accent rule.
   Use above headings as an editorial kicker. */
.sdc-overline {
  font-family: var(--sdc-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--sdc-muted);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 12px;
}
.sdc-overline::before {
  content: '';
  width: 36px; height: 1px;
  background: var(--sdc-accent);
  flex: 0 0 auto;
}


/* ═════════════ .sdc-headline ═════════════
   Three-line staircase display headline.
   Line 3 shifts to italic Latin serif to change register. */
.sdc-headline {
  font-family: var(--sdc-font-display-latin);
  font-weight: 400;
  font-size: var(--sdc-step-5);
  line-height: 0.96;
  letter-spacing: -0.022em;
  color: var(--sdc-ink-strong);
}
.sdc-headline__line         { display: block; }
.sdc-headline__line--2      { padding-left: clamp(16px, 4vw, 68px); }
.sdc-headline__line--3 {
  padding-left: clamp(32px, 8vw, 140px);
  font-style: italic;
  font-family: var(--sdc-font-body-latin);
  font-weight: 300;
  letter-spacing: -0.012em;
}
/* Narrow viewports: tighten tracking so "Landscape" never overflows. */
@media (max-width: 380px) {
  .sdc-headline { letter-spacing: -0.03em; }
  .sdc-headline__line--3 { padding-left: 24px; }
}
/* Identity mark — rendered as a true circle, not the font's period glyph,
   so its size and position stay consistent across weights, families, and
   sizes. The <span class="sdc-headline__dot"> should be empty (no text);
   if legacy HTML still has a '.' inside, we hide it with font-size: 0. */
.sdc-headline__dot {
  display: inline-block;
  width: 0.16em;
  height: 0.16em;
  border-radius: 50%;
  background: var(--sdc-accent);
  margin-left: 0.06em;
  vertical-align: 0.18em;
  font-size: 1em;       /* preserve em sizing of the containing line */
  line-height: 0;
  color: transparent;   /* any legacy period text becomes invisible */
  text-indent: -9999em; /* collapse any stray text */
  overflow: hidden;
}
/* Italic Landscape line sits slightly lower — nudge its dot to match. */
.sdc-headline__line--3 .sdc-headline__dot { vertical-align: 0.20em; }


/* ═════════════ .sdc-subhead ═════════════
   Body prose under a headline. Max 42ch for tracking.
   __x     — accent × glyph.
   __emph  — 1px accent underline (not a left-stripe). */
.sdc-subhead {
  font-family: var(--sdc-font-body-kr);
  font-size: var(--sdc-step-2);
  line-height: 1.62;
  max-width: 42ch;
  color: var(--sdc-ink);
  font-weight: 400;
  text-wrap: pretty;           /* balance → pretty: keeps rag even, prevents last-line orphan */
  word-break: keep-all;        /* CJK: only break at spaces, never inside a word */
  overflow-wrap: break-word;   /* safety net for long latin tokens */
}
/* Adjacent sibling: only when .sdc-subhead directly follows .sdc-headline (home hero).
   Subpage heroes use .sdc-page-hero__lede, so they remain unaffected. */
.sdc-headline + .sdc-subhead {
  margin-top: clamp(2.75rem, 4.5vw, 4.5rem);
}
.sdc-subhead__x {
  color: var(--sdc-accent);
  font-family: var(--sdc-font-display-latin);
  padding: 0 3px;
}
.sdc-subhead__emph {
  color: var(--sdc-ink-strong);
  font-weight: 500;
  border-bottom: 1px solid var(--sdc-accent-dim);
  padding-bottom: 1px;
}


/* ═════════════ .sdc-index-list ═════════════
   Numbered editorial list.
   3-col grid per item: number / title group / meta.
   Hover = bottom-border accent underline that grows across the row.
   NEVER a left-border colored stripe. */
.sdc-index-label {
  font-family: var(--sdc-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sdc-muted);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--sdc-rule);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.sdc-index-label .count {
  color: var(--sdc-ink);
  font-variant-numeric: tabular-nums;
}

.sdc-index-list { list-style: none; }

.sdc-index-item a {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 20px 0 18px;
  border-bottom: 1px solid var(--sdc-rule);
  color: var(--sdc-ink);
  text-decoration: none;
  position: relative;
  transition:
    color  var(--sdc-dur-base) var(--sdc-ease-out-quint),
    padding 0.45s              var(--sdc-ease-out-quint);
}

.sdc-index-item__num {
  font-family: var(--sdc-font-mono);
  font-size: 11.5px;
  color: var(--sdc-muted);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
  align-self: start;
  padding-top: 5px;
}
.sdc-index-item__title-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.sdc-index-item__title {
  font-family: var(--sdc-font-display-latin);
  font-size: var(--sdc-step-3);
  line-height: 1.18;
  letter-spacing: -0.012em;
  color: var(--sdc-ink);
  font-weight: 400;
  transition: color var(--sdc-dur-base) var(--sdc-ease-out-quint);
}
.sdc-index-item__title-ko {
  font-family: var(--sdc-font-body-kr);
  font-size: 12.5px;
  letter-spacing: 0.01em;
  color: var(--sdc-muted);
  font-weight: 400;
}
.sdc-index-item__meta {
  font-family: var(--sdc-font-mono);
  font-size: 11.5px;
  color: var(--sdc-muted);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  transition:
    color     var(--sdc-dur-base) var(--sdc-ease-out-quint),
    transform 0.45s               var(--sdc-ease-out-quint);
}

/* Growing underline on hover/focus — NOT a left-stripe. */
.sdc-index-item a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -1px;
  height: 1px; width: 0;
  background: var(--sdc-accent);
  transition: width 0.55s var(--sdc-ease-out-quint);
}
.sdc-index-item a:hover::after,
.sdc-index-item a:focus-visible::after { width: 100%; }

.sdc-index-item a:hover .sdc-index-item__num,
.sdc-index-item a:focus-visible .sdc-index-item__num { color: var(--sdc-accent); }

.sdc-index-item a:hover .sdc-index-item__title,
.sdc-index-item a:focus-visible .sdc-index-item__title { color: var(--sdc-ink-strong); }

.sdc-index-item a:hover .sdc-index-item__meta,
.sdc-index-item a:focus-visible .sdc-index-item__meta {
  color: var(--sdc-ink);
  transform: translateX(4px);
}

.sdc-index-item a:focus-visible {
  outline: none;
  background: var(--sdc-surface);
  padding-left: 12px;
  padding-right: 12px;
}


/* ═════════════ Editorial variation ═════════════
   Not every section deserves the same weight. Research projects and
   Publications are the lab's substance — larger title, 2-line meta
   (count + context). Contact becomes an explicit CTA with accent
   arrow. News stays default. This is the magazine trick: same
   list, three tiers. */

.sdc-index-item--featured .sdc-index-item__title {
  font-size: calc(var(--sdc-step-3) * 1.18);
  letter-spacing: -0.016em;
}
.sdc-index-item--featured .sdc-index-item__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  line-height: 1.1;
  font-size: 14px;
}
.sdc-index-item--featured .sdc-index-item__meta .count {
  color: var(--sdc-ink);
  font-family: var(--sdc-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 16px;
  letter-spacing: 0.02em;
}
.sdc-index-item--featured .sdc-index-item__meta .meta-sub {
  font-family: var(--sdc-font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sdc-muted);
}
.sdc-index-item--featured a:hover .sdc-index-item__meta .count,
.sdc-index-item--featured a:focus-visible .sdc-index-item__meta .count {
  color: var(--sdc-ink-strong);
}

/* CTA row — Contact & Admissions. Arrow wears the brand color,
   slightly larger, and slides further on hover. */
.sdc-index-item--cta .sdc-index-item__meta {
  color: var(--sdc-accent);
  font-family: var(--sdc-font-display-latin);
  font-size: 22px;
  line-height: 1;
  transition:
    color     var(--sdc-dur-base) var(--sdc-ease-out-quint),
    transform 0.45s               var(--sdc-ease-out-quint);
}
.sdc-index-item--cta a:hover .sdc-index-item__meta,
.sdc-index-item--cta a:focus-visible .sdc-index-item__meta {
  color: var(--sdc-accent);
  transform: translateX(8px);
}


/* ═════════════ .sdc-rule ═════════════
   Footer rule. 3-col: left meta / centered message / right meta.
   Stacks on mobile. */
.sdc-rule {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: clamp(16px, 3vw, 40px);
  padding-top: clamp(14px, 1.8vw, 22px);
  border-top: 1px solid var(--sdc-rule);
  font-family: var(--sdc-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--sdc-muted);
  text-transform: uppercase;
}
.sdc-rule__mid {
  justify-self: center;
  font-family: var(--sdc-font-body-kr);
  font-size: 12.5px;
  letter-spacing: 0;
  color: var(--sdc-ink);
  text-transform: none;
}
@media (max-width: 720px) {
  .sdc-rule { grid-template-columns: 1fr; row-gap: 8px; }
  .sdc-rule__mid { justify-self: start; }
}


/* ═════════════ Utility: .sdc-reveal ═════════════
   Page-entry animation. Combine with .sdc-reveal--N (1..7)
   to stagger across a composition. */
@keyframes sdc-rise {
  from { opacity: 0; transform: translate3d(0, 16px, 0); }
  to   { opacity: 1; transform: translate3d(0, 0, 0); }
}
.sdc-reveal {
  opacity: 0;
  animation: sdc-rise var(--sdc-dur-reveal) var(--sdc-ease-out-expo) forwards;
}
.sdc-reveal--1 { animation-delay: 0.05s; }
.sdc-reveal--2 { animation-delay: 0.18s; }
.sdc-reveal--3 { animation-delay: 0.30s; }
.sdc-reveal--4 { animation-delay: 0.42s; }
.sdc-reveal--5 { animation-delay: 0.54s; }
.sdc-reveal--6 { animation-delay: 0.68s; }
.sdc-reveal--7 { animation-delay: 0.82s; }

@media (prefers-reduced-motion: reduce) {
  .sdc-reveal  { animation: none; opacity: 1; transform: none; }
  .sdc-contour { transition: none; }

  /* Catch-all: any transition/animation we didn't explicitly guard
     collapses to near-instant.  Does not hide interactions — only
     removes motion. */
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}


/* ═════════════ Layout helpers ═════════════
   The hero composition itself isn't a reusable component —
   different pages will have different layouts. But these
   two helpers capture the asymmetric 7:4 grid used in the
   hero, which is likely to recur on section-landing pages. */
.sdc-page {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  padding: clamp(20px, 3.2vw, 44px) clamp(24px, 5vw, 72px);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: clamp(36px, 5.5vw, 80px);
}
.sdc-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(40px, 5vw, 72px);
  align-content: center;
  align-items: start;
}
/* Tablet (720–959): 6:5 quiet asymmetry so the side rail doesn't
   waste vertical space while stacked. Above 960 the hero-scale 7:4
   ratio takes over. */
@media (min-width: 720px) and (max-width: 959.98px) {
  .sdc-split {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    column-gap: clamp(32px, 5vw, 56px);
    gap: clamp(24px, 4vw, 40px);
  }
}
@media (min-width: 960px) {
  .sdc-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    column-gap: clamp(56px, 7vw, 112px);
  }
}


/* ═════════════ .sdc-chip ═════════════
   Compact mono label with three variants:

     default      — static bordered label.  Used for research interests,
                    metadata markers, static tags.
     --toggle     — interactive button variant with hover + .is-active
                    state (fills with ink).  Used for filter chips.
     --subtle     — smaller, softer border, lowercase letter-spacing.
                    Used for in-line tag strips on list entries.
     --type       — smaller, uppercase letter-spacing.
                    Used for type / kind badges (Article, 학술지, MS).

   Optional child: .sdc-chip__count  (trailing count number). */
.sdc-chip {
  font-family: var(--sdc-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--sdc-ink);
  background: transparent;
  border: 1px solid var(--sdc-rule);
  padding: 5px 11px 4px;
  line-height: 1.3;
  display: inline-block;
}

.sdc-chip--toggle {
  color: var(--sdc-muted);
  padding: 5px 10px 4px;
  cursor: pointer;
  font-family: inherit;
  transition:
    color var(--sdc-dur-fast) var(--sdc-ease-out-quint),
    border-color var(--sdc-dur-fast) var(--sdc-ease-out-quint),
    background var(--sdc-dur-fast) var(--sdc-ease-out-quint);
}
.sdc-chip--toggle:hover {
  color: var(--sdc-ink);
  border-color: var(--sdc-muted);
}
.sdc-chip--toggle:focus-visible {
  outline: none;
  color: var(--sdc-ink);
  border-color: var(--sdc-accent);
  box-shadow: inset 0 -2px 0 0 var(--sdc-accent);
}
.sdc-chip--toggle.is-active {
  color: var(--sdc-bg);
  background: var(--sdc-ink);
  border-color: var(--sdc-ink);
}

.sdc-chip--subtle {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  color: var(--sdc-muted);
  padding: 3px 8px;
  border: 1px solid var(--sdc-rule-soft);
  line-height: 1.4;
}

.sdc-chip--type {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sdc-muted);
  padding: 4px 8px 3px;
  border: 1px solid var(--sdc-rule-soft);
}

.sdc-chip__count {
  color: inherit;
  opacity: 0.55;
  margin-left: 6px;
  font-variant-numeric: tabular-nums;
}


/* ═════════════ .sdc-page-hero ═════════════
   Top section of content pages (Publications, People, ...).
   Asymmetric 7:4 grid at ≥960px; stacks below.
   Structure:
     <section class="sdc-page-hero">
       <div class="sdc-page-hero__heading">
         <div class="sdc-overline">003 / People</div>
         <h1 class="sdc-page-hero__h1">People<span class="sdc-headline__dot">.</span></h1>
         <div class="sdc-page-hero__h2">구성원</div>
         <div class="sdc-page-hero__meta">
           <span><span class="count">13</span> members</span>
           ...
         </div>
       </div>
       <div> …optional right column (controls, lede)… </div>
     </section>                                                */
.sdc-page-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 3.5vw, 48px);
  padding-bottom: clamp(24px, 3vw, 40px);
  border-bottom: 1px solid var(--sdc-rule);
}
/* Tablet parity with .sdc-split — page heroes use a gentler 6:5. */
@media (min-width: 720px) and (max-width: 959.98px) {
  .sdc-page-hero {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }
}
@media (min-width: 960px) {
  .sdc-page-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }
}
.sdc-page-hero__heading {
  display: flex;
  flex-direction: column;
  gap: var(--sdc-space-4);
}
.sdc-page-hero__h1 {
  font-family: var(--sdc-font-display-latin);
  font-weight: 400;
  font-size: clamp(48px, 6.8vw, 112px);
  line-height: 0.98;
  letter-spacing: -0.022em;
  color: var(--sdc-ink-strong);
}
.sdc-page-hero__h2 {
  font-family: var(--sdc-font-display-kr);
  font-weight: 500;
  font-size: clamp(18px, 1vw + 14px, 24px);
  color: var(--sdc-ink);
  letter-spacing: -0.01em;
}
.sdc-page-hero__meta {
  font-family: var(--sdc-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sdc-muted);
  margin-top: var(--sdc-space-3);
  display: flex;
  gap: clamp(16px, 2vw, 28px);
  flex-wrap: wrap;
}
.sdc-page-hero__meta .count {
  color: var(--sdc-ink);
  font-variant-numeric: tabular-nums;
}
.sdc-page-hero__lede {
  font-family: var(--sdc-font-body-kr);
  font-size: var(--sdc-step-2);
  line-height: 1.6;
  color: var(--sdc-ink);
  max-width: 36ch;
  padding-top: clamp(8px, 1vw, 16px);
  text-wrap: balance;
}
.sdc-page-hero__lede em {
  font-style: italic;
  font-family: var(--sdc-font-body-latin);
  color: var(--sdc-ink-strong);
}


/* ═════════════ .sdc-grouped-section ═════════════
   Vertical list of entries grouped under a large left-gutter label.
   On mobile the gutter becomes a horizontal band above entries.

   Structure:
     <section class="sdc-grouped-section" data-year="2026">
       <header class="sdc-grouped-section__head">
         <div class="sdc-grouped-section__label">PhD</div>
         <div class="sdc-grouped-section__label-kr">박사과정</div>  <!-- optional -->
         <div class="sdc-grouped-section__count">03 candidates</div>
       </header>
       <div class="sdc-grouped-section__body"> …entries… </div>
     </section>

   Modifier:
     .sdc-grouped-section__label--year    — larger, for year markers      */
.sdc-grouped-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sdc-space-4);
  padding: clamp(40px, 4.5vw, 72px) 0;
  border-bottom: 1px solid var(--sdc-rule);
}
@media (min-width: 720px) {
  .sdc-grouped-section {
    grid-template-columns: 200px 1fr;
    gap: clamp(24px, 3vw, 48px);
  }
}
@media (min-width: 1100px) {
  .sdc-grouped-section {
    grid-template-columns: 220px 1fr;
  }
}
.sdc-grouped-section__head {
  align-self: start;
}
@media (min-width: 720px) {
  .sdc-grouped-section__head {
    position: sticky;
    top: clamp(16px, 2.5vw, 32px);
  }
}
.sdc-grouped-section__label {
  font-family: var(--sdc-font-display-latin);
  font-size: clamp(26px, 1.6vw + 18px, 40px);
  line-height: 1;
  color: var(--sdc-ink-strong);
  letter-spacing: -0.018em;
  font-weight: 400;
  font-variant-numeric: lining-nums;
}
.sdc-grouped-section__label--year {
  font-size: clamp(56px, 4.5vw + 24px, 88px);    /* Publications timeline — year becomes the landmark */
  letter-spacing: -0.024em;
}
.sdc-grouped-section__label-kr {
  font-family: var(--sdc-font-display-kr);
  font-weight: 500;
  font-size: 14px;
  color: var(--sdc-muted);
  margin-top: 8px;
  letter-spacing: 0.02em;
}
.sdc-grouped-section__count {
  font-family: var(--sdc-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--sdc-muted);
  text-transform: uppercase;
  margin-top: 12px;
}
.sdc-grouped-section__body {
  display: flex;
  flex-direction: column;
}