:root {
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --paper: #f5f5f7;
  --surface: #ffffff;
  --line: #d2d2d7;
  --blue: #0071e3;
  --blue-dark: #0058b0;
  --mint: #12a8a0;
  --mint-pale: #e4f8f4;
  --shadow: 0 24px 70px rgb(0 0 0 / 8%);
  --radius: 1.75rem;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Apple SD Gothic Neo", Pretendard, "Noto Sans KR", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  letter-spacing: -0.015em;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-underline-offset: 0.22em; }
button, input, select { font: inherit; }

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  color: #fff;
  background: var(--blue);
  border-radius: 999px;
  transform: translateY(-180%);
  transition: transform 0.2s ease;
}
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; }
.container { width: min(calc(100% - 2rem), var(--max)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  color: var(--ink);
  background: rgb(255 255 255 / 78%);
  border-bottom: 1px solid rgb(0 0 0 / 7%);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}
.nav-wrap {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 680;
  letter-spacing: -0.025em;
}
.brand-mark {
  width: 1.85rem;
  height: 1.85rem;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(145deg, #252527, #5c5c60);
  border-radius: 50%;
  font-size: 0.67rem;
  font-weight: 760;
}
.site-nav { display: flex; align-items: center; gap: 0.05rem; }
.site-nav a {
  padding: 0.55rem 0.7rem;
  border-radius: 999px;
  color: #424245;
  font-size: 0.82rem;
  font-weight: 560;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease;
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: #000; background: rgb(0 0 0 / 5%); }
.nav-toggle {
  width: 42px;
  height: 42px;
  display: none;
  border: 0;
  border-radius: 50%;
  color: var(--ink);
  background: rgb(0 0 0 / 5%);
  cursor: pointer;
}
.nav-toggle span, .nav-toggle::before, .nav-toggle::after {
  width: 18px;
  height: 1.5px;
  display: block;
  margin: 4px auto;
  content: "";
  background: currentColor;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 720px;
  display: grid;
  align-items: center;
  color: var(--ink);
  background:
    radial-gradient(circle at 92% 0%, rgb(103 183 255 / 30%), transparent 31%),
    radial-gradient(circle at 84% 86%, rgb(106 229 199 / 32%), transparent 28%),
    radial-gradient(circle at 12% 78%, rgb(255 191 126 / 24%), transparent 25%),
    linear-gradient(150deg, #fff 0%, #f7fbff 48%, #f8f7ff 100%);
}
.hero::before {
  position: absolute;
  top: -18rem;
  right: -12rem;
  width: 44rem;
  height: 44rem;
  content: "";
  border: 1px solid rgb(0 113 227 / 10%);
  border-radius: 50%;
  box-shadow: 0 0 0 74px rgb(0 113 227 / 3%), 0 0 0 148px rgb(18 168 160 / 3%);
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: clamp(2.5rem, 7vw, 7rem);
  padding-block: 7rem;
}
.eyebrow {
  margin: 0 0 1rem;
  color: var(--blue);
  font-size: 0.76rem;
  font-weight: 760;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.hero .eyebrow, .page-hero .eyebrow { color: var(--blue); }
.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(4.4rem, 9vw, 8rem);
  font-weight: 730;
  line-height: 0.88;
  letter-spacing: -0.078em;
}
.hero .role {
  max-width: 660px;
  margin: 1.8rem 0 0;
  color: #424245;
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  font-weight: 430;
  letter-spacing: -0.028em;
}
.hero-actions, .button-row { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 2rem; }
.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.22rem;
  border: 1px solid var(--blue);
  border-radius: 999px;
  color: #fff;
  background: var(--blue);
  font-size: 0.95rem;
  font-weight: 620;
  text-decoration: none;
  transition: transform 0.25s ease, background 0.2s ease, box-shadow 0.25s ease;
}
.button:hover { background: var(--blue-dark); box-shadow: 0 8px 22px rgb(0 113 227 / 20%); transform: translateY(-2px); }
.button-light { border-color: rgb(0 0 0 / 9%); color: var(--ink); background: rgb(255 255 255 / 80%); }
.button-light:hover { color: var(--ink); background: #fff; box-shadow: 0 8px 22px rgb(0 0 0 / 8%); }
.button-ghost { color: var(--blue); background: transparent; }

.spatial-graphic {
  position: relative;
  min-height: 430px;
  border: 1px solid rgb(255 255 255 / 72%);
  border-radius: 46% 54% 51% 49% / 54% 45% 55% 46%;
  background:
    radial-gradient(circle at 31% 35%, #fff 0 7px, transparent 8px),
    radial-gradient(circle at 69% 62%, #ffb340 0 10px, transparent 11px),
    radial-gradient(circle at 55% 23%, #3ad7cf 0 7px, transparent 8px),
    radial-gradient(circle at 24% 72%, #62aef7 0 9px, transparent 10px),
    radial-gradient(circle at 64% 40%, rgb(255 255 255 / 58%), transparent 31%),
    linear-gradient(145deg, #5eb8ff 0%, #7478ed 40%, #ff9ec4 71%, #ffc56f 100%);
  box-shadow: inset 0 0 90px rgb(255 255 255 / 28%), 0 34px 90px rgb(64 93 180 / 22%);
  animation: float 7s ease-in-out infinite;
}
.spatial-graphic::before, .spatial-graphic::after {
  position: absolute;
  inset: 12%;
  content: "";
  border: 1px solid rgb(255 255 255 / 63%);
  border-radius: 57% 43% 63% 37%;
  transform: rotate(18deg);
}
.spatial-graphic::after { inset: 28%; border-color: rgb(255 255 255 / 76%); transform: rotate(-27deg); }
.map-label {
  position: absolute;
  right: 1.8rem;
  bottom: 1.8rem;
  max-width: 14rem;
  margin: 0;
  padding: 0.85rem 1rem;
  color: #fff;
  background: rgb(255 255 255 / 16%);
  border: 1px solid rgb(255 255 255 / 36%);
  border-radius: 1rem;
  box-shadow: 0 10px 40px rgb(60 43 120 / 15%);
  backdrop-filter: blur(16px);
  font-size: 0.8rem;
  font-weight: 570;
}
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-12px) rotate(1deg); }
}

.section { padding-block: clamp(5rem, 7vw, 7rem); background: var(--paper); }
.section-white { background: var(--surface); }
.section-dark {
  position: relative;
  overflow: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 12%, rgb(255 255 255 / 90%), transparent 31%),
    radial-gradient(circle at 88% 75%, rgb(96 218 205 / 32%), transparent 30%),
    linear-gradient(135deg, #ddecff 0%, #f6eefe 48%, #fff0dc 100%);
}
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 2.8rem; }
.section-head h2, .section-title {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 690;
  line-height: 1.02;
  letter-spacing: -0.058em;
}
.section-intro { max-width: 720px; margin: 1.25rem 0 0; color: var(--muted); font-size: 1.12rem; letter-spacing: -0.025em; }
.section-dark .section-intro { color: #515154; }
.text-link { color: var(--blue); font-weight: 620; text-decoration: none; white-space: nowrap; }
.text-link:hover { text-decoration: underline; }

.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.5rem, 2.3vw, 2rem); align-items: stretch; }
.card {
  min-height: 260px;
  padding: clamp(1.55rem, 3vw, 2.2rem);
  border: 0;
  border-radius: var(--radius);
  background: #f5f5f7;
  box-shadow: 0 1px 0 rgb(0 0 0 / 4%);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.section:not(.section-white) .card { background-color: #fff; }
.card:hover { box-shadow: 0 24px 55px rgb(0 0 0 / 10%); transform: translateY(-6px); }
.card:nth-child(3n + 1) { background-image: linear-gradient(150deg, rgb(232 243 255 / 82%), transparent 58%); }
.card:nth-child(3n + 2) { background-image: linear-gradient(150deg, rgb(228 248 244 / 88%), transparent 58%); }
.card:nth-child(3n + 3) { background-image: linear-gradient(150deg, rgb(255 240 222 / 88%), transparent 58%); }
.card h3 { margin: 0 0 1rem; font-size: clamp(1.25rem, 1.8vw, 1.5rem); font-weight: 650; line-height: 1.4; letter-spacing: -0.025em; word-break: keep-all; overflow-wrap: anywhere; }
.card p { margin: 0; color: var(--muted); }
.card-number { display: block; margin-bottom: 2rem; color: var(--blue); font-size: 0.8rem; font-weight: 760; letter-spacing: 0.09em; }

/* Share title and body rows so adjacent cards stay aligned as text wraps. */
@supports (grid-template-rows: subgrid) {
  @media (min-width: 681px) {
    .card-grid > .card {
      display: grid;
      grid-template-rows: subgrid;
      grid-row: span 4;
      row-gap: 0;
      align-content: start;
    }
  }
}

.publication-list { display: grid; gap: 0.85rem; }
.publication {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) auto;
  gap: 1.25rem;
  align-items: start;
  padding: 1.45rem 1.55rem;
  border: 0;
  border-radius: 1.25rem;
  background: rgb(255 255 255 / 76%);
  transition: background 0.2s ease, transform 0.2s ease;
}
.section-white .publication { background: var(--paper); }
.publication:hover { background: #fff; transform: translateY(-2px); }
.publication-year { color: var(--blue); font-weight: 720; }
.publication h3 { margin: 0; font-size: 1.04rem; line-height: 1.5; letter-spacing: -0.018em; }
.publication-meta { margin: 0.4rem 0 0; color: var(--muted); font-size: 0.9rem; }
.publication a { color: var(--blue); font-size: 0.88rem; font-weight: 650; text-decoration: none; }

.page-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(5rem, 7vw, 7rem);
  color: var(--ink);
  background:
    radial-gradient(circle at 86% 12%, rgb(94 184 255 / 35%), transparent 26%),
    radial-gradient(circle at 72% 95%, rgb(255 173 201 / 28%), transparent 31%),
    linear-gradient(145deg, #fff 0%, #f1f7ff 52%, #f9f4ff 100%);
}
.page-hero::after {
  position: absolute;
  top: -17rem;
  right: -9rem;
  width: 38rem;
  height: 38rem;
  content: "";
  border: 1px solid rgb(0 113 227 / 12%);
  border-radius: 50%;
  box-shadow: 0 0 0 90px rgb(0 113 227 / 3%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { max-width: 900px; margin: 0; font-size: clamp(3.3rem, 7vw, 6.5rem); font-weight: 710; line-height: 0.94; letter-spacing: -0.068em; }
.page-hero p:not(.eyebrow) { max-width: 720px; margin: 1.7rem 0 0; color: #515154; font-size: 1.13rem; }
.two-column { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr); gap: clamp(2.5rem, 7vw, 6rem); }
.prose { max-width: 760px; }
.prose h2 { margin: 3rem 0 0.85rem; font-size: 2.1rem; font-weight: 660; line-height: 1.15; letter-spacing: -0.04em; }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: #515154; }

.fact-panel {
  align-self: start;
  padding: 1.75rem;
  border: 1px solid rgb(0 0 0 / 5%);
  border-radius: var(--radius);
  color: var(--ink);
  background: rgb(255 255 255 / 72%);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}
.fact-panel h2 { margin-top: 0; font-size: 1.25rem; font-weight: 660; }
.fact-list { display: grid; gap: 0; margin: 0; }
.fact-list div { padding-block: 1rem; border-top: 1px solid rgb(0 0 0 / 9%); }
.fact-list dt { color: var(--muted); font-size: 0.73rem; font-weight: 720; letter-spacing: 0.08em; text-transform: uppercase; }
.fact-list dd { margin: 0.25rem 0 0; }

.timeline { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.25rem; margin: 2rem 0 0; }
.timeline-item, .timeline-item > div { min-width: 0; }
.timeline-item a { white-space: normal; overflow-wrap: anywhere; }
.timeline-item { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 1.4rem; padding: 1.5rem 1.6rem; border: 0; border-radius: 1.25rem; background: #fff; }
.section-white .timeline-item { background: var(--paper); }
.timeline-item time { color: var(--blue); font-weight: 720; }
.timeline-item h3, .timeline-item p { margin: 0; }
.timeline-item h3 { letter-spacing: -0.025em; }
.timeline-item p { margin-top: 0.28rem; color: var(--muted); }
.timeline-item .grant-amount {
  width: fit-content;
  margin-top: 0.8rem;
  padding: 0.45rem 0.65rem;
  color: var(--ink);
  background: #fff;
  border-left: 4px solid var(--princeton-orange, #f58025);
  font-size: 0.9rem;
}
.timeline-item .grant-amount strong { margin-right: 0.35rem; color: #b9570e; }
.graduate-step-action { display: flex; align-items: center; gap: 1.25rem; margin-top: 0.5rem; }
.timeline-item .graduate-step-action p { flex: 1 1 auto; margin: 0; }
.graduate-official-button { flex: 0 0 auto; min-height: 44px; padding: 0.68rem 1rem; white-space: nowrap; }

@media (max-width: 700px) {
  .graduate-step-action { align-items: stretch; flex-direction: column; gap: 0.9rem; }
  .graduate-official-button { align-self: flex-start; }
}

.filters { display: grid; grid-template-columns: minmax(0, 1fr) 190px; gap: 0.8rem; margin-bottom: 2rem; padding: 1.1rem; border-radius: 1.35rem; background: var(--paper); }
.field-label { display: block; margin: 0 0 0.4rem 0.2rem; color: var(--muted); font-size: 0.78rem; font-weight: 650; }
.input, .select { width: 100%; min-height: 50px; padding: 0.75rem 1rem; border: 1px solid transparent; border-radius: 0.95rem; color: var(--ink); background: #fff; box-shadow: 0 1px 3px rgb(0 0 0 / 5%); }
.input:focus, .select:focus { border-color: var(--blue); }
.result-count { margin: 0 0 0.8rem; color: var(--muted); font-size: 0.9rem; }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 1.2rem; }
.tag { display: inline-flex; align-items: center; min-height: 30px; padding: 0.2rem 0.7rem; border-radius: 999px; color: #087d78; background: var(--mint-pale); font-size: 0.75rem; font-weight: 650; }
.empty-state { padding: 2.2rem; border: 1px dashed #b7b7bb; border-radius: var(--radius); color: var(--muted); text-align: center; }

.member-section { background: var(--paper); }
.member-groups { display: grid; gap: 1.25rem; }
.member-group {
  padding: clamp(1.5rem, 3vw, 2.4rem);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 1px 0 rgb(0 0 0 / 4%);
}
.member-group-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.4rem;
}
.member-group-head .eyebrow { margin-bottom: 0.35rem; }
.member-group-head h2 { margin: 0; font-size: clamp(2rem, 4vw, 3rem); line-height: 1; letter-spacing: -0.05em; }
.member-status {
  flex: 0 0 auto;
  padding: 0.38rem 0.75rem;
  border-radius: 999px;
  color: #087d78;
  background: var(--mint-pale);
  font-size: 0.76rem;
  font-weight: 650;
}
.member-group .empty-state { background: var(--paper); }
.member-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
}
.member-card {
  min-width: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 5px solid var(--princeton-orange, #f58025);
  box-shadow: 0 10px 28px rgb(7 27 59 / 7%);
}
.member-photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center top;
  background: #e8e6e0;
  border-bottom: 1px solid var(--line);
}
.member-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1.35rem;
}
.member-role {
  margin: 0 0 0.35rem;
  color: #b9570e;
  font-size: 0.72rem;
  font-weight: 780;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.member-card h3 {
  margin: 0;
  font-size: 1.55rem;
  line-height: 1.1;
  letter-spacing: -0.04em;
}
.member-interests {
  display: grid;
  gap: 0.28rem;
  margin: 1rem 0 0;
  padding: 0;
  color: var(--ink);
  font-size: 0.84rem;
  list-style: none;
}
.member-interests li { position: relative; padding-left: 0.85rem; }
.member-interests li::before {
  position: absolute;
  top: 0.62em;
  left: 0;
  width: 0.34rem;
  height: 0.34rem;
  content: "";
  background: var(--princeton-orange, #f58025);
  transform: rotate(45deg);
}
.member-bio,
.member-current {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.65;
}
.member-current { color: var(--ink); font-weight: 620; }
.member-email {
  margin-top: auto;
  padding-top: 1rem;
  color: var(--blue);
  font-size: 0.82rem;
  font-weight: 680;
  overflow-wrap: anywhere;
  text-decoration: none;
}
.member-email:hover { color: #b9570e; text-decoration: underline; }

/* Compact, friendly portraits for the people directory. */
.member-card {
  align-items: center;
  padding-top: 1.3rem;
  border-radius: 1.1rem;
}
.member-photo {
  width: 108px;
  height: 108px;
  aspect-ratio: 1;
  margin: 0 auto;
  border: 4px solid #fff;
  border-radius: 50%;
  box-shadow:
    0 0 0 3px rgb(245 128 37 / 38%),
    0 10px 24px rgb(7 27 59 / 15%);
}
.member-card-body {
  width: 100%;
  padding: 1rem 1.25rem 1.35rem;
  text-align: center;
}
.member-interests { justify-items: center; }
.member-interests li { width: fit-content; text-align: left; }

@media (max-width: 680px) {
  .member-card { padding-top: 1.1rem; }
  .member-photo { width: 92px; height: 92px; }
  .member-card-body { padding: 0.9rem 1rem 1.15rem; }
}

@media (max-width: 960px) {
  .member-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.research-map-section {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 10% 10%, rgb(255 255 255 / 90%), transparent 32%),
    radial-gradient(circle at 90% 82%, rgb(82 218 205 / 28%), transparent 28%),
    linear-gradient(140deg, #e2f1ff 0%, #f3eaff 52%, #fff0de 100%);
}
.research-explorer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.34fr);
  gap: 1.25rem;
  align-items: stretch;
}
.research-network {
  position: relative;
  min-height: 620px;
  border: 1px solid #294b70;
  border-radius: calc(var(--radius) + 0.4rem);
  background: radial-gradient(ellipse at 50% 45%, #244b73 0%, #133253 48%, #071b3b 100%);
  box-shadow: 0 18px 45px rgb(7 27 59 / 16%);
}
.research-network-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}
.research-network-lines line {
  stroke: #7895b5;
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
  transition: stroke 0.25s ease, stroke-width 0.25s ease, opacity 0.25s ease;
}
.research-network-lines line.is-related { stroke: #a7c6e8; }
.research-network-lines line.is-active { stroke: #f58025; stroke-width: 3; }
.research-node {
  position: absolute;
  top: var(--node-y);
  left: var(--node-x);
  z-index: 2;
  min-width: 126px;
  min-height: 72px;
  display: grid;
  place-content: center;
  gap: 0.15rem;
  padding: 0.75rem 1rem;
  border: 1px solid rgb(255 255 255 / 84%);
  border-radius: 1.25rem;
  color: var(--ink);
  background: #fff;
  box-shadow: 0 10px 28px rgb(0 0 0 / 20%);
  transform: translate(-50%, -50%);
  cursor: pointer;
  transition: transform 0.22s ease, box-shadow 0.22s ease, opacity 0.22s ease, background 0.22s ease;
}
.research-node span { font-weight: 680; letter-spacing: -0.025em; }
.research-node small { color: var(--muted); font-size: 0.7rem; }
.research-node:hover, .research-node:focus-visible { transform: translate(-50%, -50%) scale(1.04); box-shadow: 0 0 0 3px #f58025, 0 14px 32px rgb(0 0 0 / 24%); }
.research-node.is-related { background: #edf6ff; }
.research-node.is-dimmed { opacity: 1; background: #dbe2ea; border-color: #a7b8cb; box-shadow: none; }
.research-node.is-active {
  color: #071b3b;
  background: #f58025;
  border-color: #ffb77e;
  box-shadow: 0 0 0 5px rgb(245 128 37 / 16%), 0 16px 36px rgb(0 0 0 / 24%);
}
.research-node.is-active small { color: #173454; }
.research-node-core { min-width: 156px; min-height: 92px; border-radius: 50%; }
.research-detail {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.5rem, 3vw, 2.3rem);
  border: 1px solid rgb(255 255 255 / 76%);
  border-radius: calc(var(--radius) + 0.4rem);
  background: rgb(255 255 255 / 76%);
  box-shadow: 0 26px 80px rgb(68 83 140 / 10%);
  backdrop-filter: blur(20px);
}
.research-detail h3 { margin: 0; font-size: clamp(1.7rem, 3vw, 2.4rem); line-height: 1.08; letter-spacing: -0.05em; }
.research-detail > p:not(.eyebrow) { margin: 1rem 0 0; color: var(--muted); }
.research-detail .tag-list { margin-top: 1.5rem; }

.publication-map-section {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 8% 8%, rgb(255 255 255 / 92%), transparent 28%),
    radial-gradient(circle at 88% 82%, rgb(90 218 204 / 26%), transparent 30%),
    linear-gradient(138deg, #e3f1ff 0%, #f2eaff 51%, #fff1df 100%);
}
.publication-keyword-explorer {
  display: grid;
  grid-template-columns: minmax(270px, 0.32fr) minmax(0, 0.68fr);
  gap: 1.25rem;
  align-items: stretch;
}
.publication-keyword-detail {
  min-height: 360px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.5rem, 3vw, 2.35rem);
  border: 1px solid rgb(255 255 255 / 78%);
  border-radius: calc(var(--radius) + 0.35rem);
  background: rgb(255 255 255 / 74%);
  box-shadow: 0 26px 76px rgb(68 83 140 / 10%);
  backdrop-filter: blur(20px);
}
.publication-keyword-detail h3 { margin: 0; font-size: clamp(1.75rem, 3vw, 2.6rem); line-height: 1.06; letter-spacing: -0.052em; }
.publication-keyword-detail > p:not(.eyebrow, .keyword-result) { margin: 1rem 0 0; color: var(--muted); }
.keyword-result { display: flex; align-items: end; gap: 0.55rem; margin: 1.7rem 0 0; }
.keyword-result strong { color: var(--blue); font-size: 2.8rem; line-height: 0.9; letter-spacing: -0.06em; }
.keyword-result span { color: var(--muted); font-size: 0.82rem; }
.keyword-reset {
  align-self: flex-start;
  margin-top: 1.25rem;
  padding: 0.58rem 0.9rem;
  border: 1px solid rgb(0 113 227 / 20%);
  border-radius: 999px;
  color: var(--blue);
  background: rgb(255 255 255 / 74%);
  font-size: 0.82rem;
  font-weight: 650;
  cursor: pointer;
}
.publication-keyword-cloud {
  min-height: 360px;
  display: flex;
  flex-wrap: wrap;
  align-content: center;
  justify-content: center;
  gap: 0.72rem;
  padding: clamp(1.4rem, 3vw, 2.5rem);
  border: 1px solid rgb(255 255 255 / 72%);
  border-radius: calc(var(--radius) + 0.35rem);
  background: rgb(255 255 255 / 48%);
  box-shadow: 0 26px 76px rgb(68 83 140 / 9%);
  backdrop-filter: blur(20px);
}
.publication-keyword {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 1rem;
  border: 1px solid rgb(255 255 255 / 76%);
  border-radius: 999px;
  color: var(--ink);
  background: rgb(255 255 255 / 82%);
  box-shadow: 0 9px 24px rgb(60 80 130 / 8%);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}
.publication-keyword[data-tone="blue"] { background: #eaf4ff; }
.publication-keyword[data-tone="purple"] { background: #f1edff; }
.publication-keyword[data-tone="mint"] { background: #e6f8f3; }
.publication-keyword[data-tone="orange"] { background: #fff1df; }
.publication-keyword span { font-weight: 650; letter-spacing: -0.025em; }
.publication-keyword small { color: var(--muted); font-size: 0.7rem; }
.publication-keyword.is-medium { min-height: 58px; padding-inline: 1.12rem; }
.publication-keyword.is-large { min-height: 66px; padding-inline: 1.28rem; }
.publication-keyword:hover, .publication-keyword:focus-visible { transform: translateY(-3px); box-shadow: 0 15px 32px rgb(40 76 140 / 15%); }
.publication-keyword.is-active {
  color: #fff;
  background: linear-gradient(145deg, #0077ed, #635bdf);
  box-shadow: 0 16px 36px rgb(0 113 227 / 24%);
}
.publication-keyword.is-active small { color: rgb(255 255 255 / 78%); }

.recruitment-section {
  background:
    radial-gradient(circle at 12% 15%, rgb(255 255 255 / 92%), transparent 30%),
    radial-gradient(circle at 92% 80%, rgb(84 215 201 / 32%), transparent 31%),
    linear-gradient(135deg, #dceeff 0%, #f1e8ff 50%, #fff0dd 100%);
}
.recruitment-callout {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
  gap: clamp(2.5rem, 7vw, 6rem);
  align-items: center;
  padding: clamp(2rem, 5vw, 4.5rem);
  border: 1px solid rgb(255 255 255 / 72%);
  border-radius: calc(var(--radius) + 0.55rem);
  background: rgb(255 255 255 / 62%);
  box-shadow: 0 28px 80px rgb(68 83 140 / 14%);
  backdrop-filter: blur(22px);
}
.recruitment-callout h2 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.7rem, 5.5vw, 5rem);
  font-weight: 710;
  line-height: 0.98;
  letter-spacing: -0.065em;
}
#graduate-opportunities-title {
  font-size: clamp(1.15rem, 5vw, 3.35rem);
  line-height: 1.08;
}
#graduate-opportunities-title span {
  display: block;
  white-space: nowrap;
}
.recruitment-lead {
  max-width: 720px;
  margin: 1.4rem 0 0;
  color: #424245;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}
.recruitment-details {
  padding: clamp(1.4rem, 3vw, 2rem);
  border-radius: var(--radius);
  background: rgb(255 255 255 / 78%);
}
.recruitment-details ul {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding-left: 1.2rem;
}
.recruitment-details li::marker { color: var(--blue); }
.recruitment-details p { margin: 1.4rem 0 0; color: var(--muted); }

.contact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.15rem; }
.contact-card { min-height: 240px; display: flex; flex-direction: column; justify-content: space-between; padding: 1.75rem; border-radius: var(--radius); color: var(--ink); background: linear-gradient(145deg, #e4f1ff, #f5faff); box-shadow: 0 1px 0 rgb(0 0 0 / 4%); }
.contact-card:nth-child(2) { background: linear-gradient(145deg, #dff7f2, #f3fffc); }
.contact-card:nth-child(3) { background: linear-gradient(145deg, #fff0dc, #fffaf4); }
.contact-card h2 { margin: 0; font-size: 1.55rem; font-weight: 660; letter-spacing: -0.04em; }
.contact-card p { margin: 1.2rem 0 0; }
.contact-card a { color: var(--blue); font-weight: 620; overflow-wrap: anywhere; }
.notice { padding: 1.25rem 1.4rem; border: 0; border-radius: 1rem; color: #59400a; background: #fff5d9; }

.site-footer { padding-block: 3.5rem; color: var(--muted); background: #f5f5f7; border-top: 1px solid rgb(0 0 0 / 6%); }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 3rem; }
.footer-title { margin: 0; color: var(--ink); font-size: 1.45rem; font-weight: 660; letter-spacing: -0.04em; }
.footer-nav { display: flex; flex-wrap: wrap; justify-content: end; gap: 0.5rem 1rem; }
.footer-nav a { color: #424245; }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid rgb(0 0 0 / 10%); font-size: 0.82rem; }
[hidden] { display: none !important; }

@media (max-width: 960px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute;
    top: 56px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 0.8rem 1rem 1.2rem;
    border-top: 1px solid rgb(0 0 0 / 7%);
    background: rgb(255 255 255 / 96%);
    box-shadow: 0 20px 40px rgb(0 0 0 / 8%);
    backdrop-filter: blur(20px);
  }
  .site-nav[data-open="true"] { display: flex; }
  .site-nav a { min-height: 48px; display: flex; align-items: center; padding-inline: 1rem; font-size: 0.95rem; }
  .hero-grid, .two-column { grid-template-columns: 1fr; }
  .recruitment-callout { grid-template-columns: 1fr; }
  .research-explorer { grid-template-columns: 1fr; }
  .research-detail { min-height: 280px; }
  .publication-keyword-explorer { grid-template-columns: 1fr; }
  .publication-keyword-detail { min-height: 280px; }
  .hero { min-height: auto; }
  .hero-grid { padding-block: 5.5rem; }
  .spatial-graphic { min-height: 380px; max-width: 620px; width: 100%; justify-self: center; }
  .card-grid, .contact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
  .container { width: min(calc(100% - 2.5rem), var(--max)); }
  .hero-grid { padding-block: 4.3rem 5rem; }
  .hero h1 { font-size: clamp(4rem, 21vw, 6.2rem); }
  .spatial-graphic { min-height: 330px; }
  .section { padding-block: 4rem; }
  .section-head, .footer-bottom { align-items: start; flex-direction: column; }
  .section-head h2, .section-title { font-size: clamp(2.45rem, 12vw, 3.6rem); }
  .page-hero h1 { font-size: clamp(3.2rem, 16vw, 5rem); }
  .card-grid, .contact-grid, .filters, .footer-grid { grid-template-columns: 1fr; }
  .card { min-height: 0; }
  .publication { grid-template-columns: 62px minmax(0, 1fr); padding: 1.25rem; }
  .publication > a { grid-column: 2; justify-self: start; }
  .timeline-item { grid-template-columns: 1fr; gap: 0.35rem; }
  .member-group-head { align-items: flex-start; flex-direction: column; }
  .member-grid { grid-template-columns: 1fr; }
  .research-network {
    min-height: auto;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem;
    padding: 1rem;
  }
  .research-network-lines { display: none; }
  .research-node {
    position: static;
    min-width: 0;
    min-height: 88px;
    width: 100%;
    transform: none;
  }
  .research-node:hover, .research-node:focus-visible { transform: translateY(-2px); }
  .research-node-core { grid-column: 1 / -1; border-radius: 1.25rem; }
  .publication-keyword-cloud { justify-content: flex-start; }
  .publication-keyword { flex: 1 1 calc(50% - 0.5rem); justify-content: space-between; border-radius: 1rem; }
  .footer-nav { justify-content: start; }
}

/* ========================================================================== 
   Princeton-inspired academic identity
   Deep navy architecture, orange signals, strong editorial grid.
   ========================================================================== */
:root {
  --ink: #0a1d3a;
  --muted: #5c6675;
  --paper: #f2f0eb;
  --surface: #ffffff;
  --line: #c9c6bf;
  --blue: #0b3768;
  --blue-dark: #061f42;
  --mint: #168c83;
  --mint-pale: #dcefeb;
  --princeton-navy: #071b3b;
  --princeton-navy-deep: #04142e;
  --princeton-orange: #f58025;
  --princeton-cream: #f2f0eb;
  --shadow: 0 18px 45px rgb(7 27 59 / 11%);
  --radius: 0.2rem;
}

body {
  color: var(--ink);
  background: var(--princeton-cream);
  letter-spacing: -0.01em;
}

::selection { color: #fff; background: var(--princeton-orange); }
:focus-visible { outline-color: var(--princeton-orange); }

.site-header {
  position: relative;
  color: #fff;
  background: var(--princeton-navy);
  border-top: 6px solid var(--princeton-orange);
  border-bottom: 0;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.site-header::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.17;
  background:
    linear-gradient(115deg, transparent 0 72%, rgb(255 255 255 / 12%) 72% 72.2%, transparent 72.2%),
    linear-gradient(65deg, transparent 0 84%, rgb(245 128 37 / 18%) 84% 84.2%, transparent 84.2%);
}
.nav-wrap {
  position: relative;
  min-height: 206px;
  display: grid;
  grid-template-columns: 1fr;
  align-content: space-between;
  gap: 2.25rem;
  padding-block: 2.45rem 1.15rem;
}
.brand {
  width: fit-content;
  align-items: center;
  gap: 1.15rem;
  color: #fff;
  font-size: clamp(2.15rem, 4.4vw, 4rem);
  font-family: "Arial Narrow", "Aptos Display", "Apple SD Gothic Neo", sans-serif;
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.055em;
  text-transform: uppercase;
}
.brand::after {
  align-self: center;
  padding-left: 1.2rem;
  color: var(--princeton-orange);
  border-left: 1px solid rgb(255 255 255 / 45%);
  content: "GEOGRAPHY\A GIS · EDUCATION";
  font-size: clamp(0.69rem, 1.2vw, 0.95rem);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", sans-serif;
  font-weight: 760;
  line-height: 1.35;
  letter-spacing: 0.05em;
  white-space: pre;
}
.brand-mark {
  width: auto;
  /* Match 1.5 times the adjacent uppercase lettering; em is a fallback. */
  height: 1.1em;
  height: 1.5cap;
  flex: 0 0 auto;
  color: var(--princeton-navy);
  display: block;
  object-fit: contain;
  background: transparent;
  border: 0;
  border-radius: 0;
  clip-path: none;
  font-size: inherit;
  letter-spacing: -0.04em;
}
.site-nav {
  width: 100%;
  justify-content: flex-start;
  gap: clamp(0.2rem, 1vw, 0.9rem);
  border-top: 1px solid rgb(255 255 255 / 18%);
  padding-top: 0.9rem;
}
.site-nav a {
  position: relative;
  padding: 0.45rem 0.75rem;
  color: #fff;
  border-radius: 0;
  font-size: 1.2rem;
  font-weight: 720;
  letter-spacing: 0.015em;
}
.site-nav a::after {
  position: absolute;
  right: 0.72rem;
  bottom: -0.93rem;
  left: 0.72rem;
  height: 4px;
  content: "";
  background: var(--princeton-orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] { color: #fff; background: transparent; }
.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav-toggle { color: #fff; background: rgb(255 255 255 / 10%); border: 1px solid rgb(255 255 255 / 24%); }

.hero {
  min-height: 660px;
  color: #fff;
  background:
    linear-gradient(90deg, var(--princeton-navy-deep) 0 42%, transparent 42%),
    var(--princeton-navy);
}
.hero::before {
  top: auto;
  right: auto;
  bottom: -15rem;
  left: -12rem;
  width: 35rem;
  height: 35rem;
  border: 1px solid rgb(245 128 37 / 24%);
  box-shadow: 0 0 0 80px rgb(245 128 37 / 4%), 0 0 0 160px rgb(255 255 255 / 2%);
}
.hero-grid {
  width: 100%;
  max-width: none;
  grid-template-columns: minmax(0, 0.84fr) minmax(440px, 1.16fr);
  gap: 0;
  padding: 0;
}
.hero-grid > div:first-child {
  position: relative;
  z-index: 2;
  padding: clamp(4rem, 8vw, 7rem) clamp(2rem, 6vw, 6.5rem);
}
.hero .eyebrow,
.page-hero .eyebrow { color: var(--princeton-orange); }
.eyebrow {
  color: #b9570e;
  font-weight: 820;
  letter-spacing: 0.16em;
}
.hero h1 {
  color: #fff;
  font-family: "Arial Narrow", "Aptos Display", "Apple SD Gothic Neo", sans-serif;
  font-weight: 900;
  letter-spacing: -0.065em;
  text-transform: uppercase;
}
.hero .role { color: rgb(255 255 255 / 76%); }
.spatial-graphic {
  min-height: 660px;
  border: 0;
  border-radius: 0;
  background:
    linear-gradient(135deg, transparent 0 54%, rgb(245 128 37 / 82%) 54% 54.7%, transparent 54.7%),
    linear-gradient(45deg, transparent 0 70%, rgb(255 255 255 / 16%) 70% 70.5%, transparent 70.5%),
    radial-gradient(circle at 31% 35%, #fff 0 7px, transparent 8px),
    radial-gradient(circle at 69% 62%, #f58025 0 10px, transparent 11px),
    radial-gradient(circle at 55% 23%, #46c7be 0 7px, transparent 8px),
    radial-gradient(circle at 24% 72%, #5ba5df 0 9px, transparent 10px),
    linear-gradient(145deg, #143a68 0%, #486d91 43%, #9ca9b4 71%, #d8c5aa 100%);
  box-shadow: inset 90px 0 120px rgb(4 20 46 / 42%);
  animation: none;
}
.spatial-graphic::before,
.spatial-graphic::after { border-radius: 0; border-color: rgb(255 255 255 / 42%); }
.map-label {
  right: 2.4rem;
  bottom: 2.4rem;
  border-radius: 0;
  border-left: 5px solid var(--princeton-orange);
  background: rgb(4 20 46 / 78%);
}

.button {
  min-height: 48px;
  padding: 0.78rem 1.25rem;
  color: var(--princeton-navy);
  background: var(--princeton-orange);
  border: 2px solid var(--princeton-orange);
  border-radius: 0;
  font-size: 1rem;
  font-weight: 760;
  letter-spacing: 0.025em;
}
.button:hover { color: var(--princeton-navy); background: #e5751e; border-color: #e5751e; box-shadow: none; }
.button-light {
  color: var(--ink);
  background: #fff;
  border-color: var(--ink);
}
.button-light:hover { color: #fff; background: var(--princeton-navy); border-color: var(--princeton-navy); box-shadow: none; }
.hero .button-light,
.section-dark .button-light,
.recruitment-section .button-light { color: #fff; background: transparent; border-color: rgb(255 255 255 / 70%); }
.hero .button-light:hover,
.section-dark .button-light:hover,
.recruitment-section .button-light:hover { color: var(--princeton-navy); background: #fff; border-color: #fff; }
.recruitment-details .button-light { color: var(--princeton-navy); background: #fff; border-color: var(--princeton-navy); }
.recruitment-details .button-light:hover { color: #fff; background: var(--princeton-navy); border-color: var(--princeton-navy); }

.section { background: var(--princeton-cream); }
.section-white { background: #fff; }
.section-head { padding-bottom: 1.35rem; border-bottom: 4px solid var(--princeton-navy); }
.section-head h2,
.section-title,
.page-hero h1,
.recruitment-callout h2 {
  font-family: "Arial Narrow", "Aptos Display", "Apple SD Gothic Neo", sans-serif;
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.2;
  word-break: keep-all;
  overflow-wrap: anywhere;
  text-wrap: balance;
}
.section-head h2, .section-title { font-size: clamp(2rem, 3.6vw, 3.25rem); }
.recruitment-callout h2 { font-size: clamp(2rem, 3.5vw, 3.25rem); }
.section-head { margin-bottom: 2.25rem; }
.card p, .section-intro, .timeline-item p, .recruitment-lead { line-height: 1.75; word-break: keep-all; overflow-wrap: anywhere; }
.two-column > *, .recruitment-callout > * { min-width: 0; }
.text-link { color: var(--princeton-navy); font-weight: 780; }
.text-link::after { color: var(--princeton-orange); }
.section-dark {
  color: #fff;
  background:
    linear-gradient(130deg, transparent 0 68%, rgb(245 128 37 / 14%) 68% 68.4%, transparent 68.4%),
    radial-gradient(circle at 90% 15%, rgb(50 103 153 / 58%), transparent 34%),
    var(--princeton-navy);
}
.section-dark .section-intro { color: rgb(255 255 255 / 72%); }
.section-dark .eyebrow { color: var(--princeton-orange); }

.card,
.section:not(.section-white) .card {
  position: relative;
  border: 1px solid var(--line);
  border-top: 6px solid var(--princeton-navy);
  border-radius: 0;
  color: var(--ink);
  background-color: #fff;
  background-image: none;
  box-shadow: none;
}
.card::after {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 0;
  height: 0;
  content: "";
  border-bottom: 32px solid var(--princeton-orange);
  border-left: 32px solid transparent;
}
.card:hover { border-top-color: var(--princeton-orange); box-shadow: var(--shadow); transform: translateY(-4px); }
.card-number { color: #b9570e; }
.card h3 { font-weight: 780; }

.publication {
  border-radius: 0;
  border-left: 5px solid var(--princeton-navy);
  background: #fff;
}
.section-white .publication { background: var(--princeton-cream); }
.publication:hover { border-left-color: var(--princeton-orange); background: #fff; }
.publication-year,
.publication a { color: #b9570e; }

.page-hero {
  min-height: 440px;
  display: grid;
  align-items: end;
  color: #fff;
  background:
    linear-gradient(117deg, transparent 0 70%, rgb(245 128 37 / 22%) 70% 70.4%, transparent 70.4%),
    radial-gradient(circle at 88% 5%, rgb(55 106 155 / 62%), transparent 31%),
    var(--princeton-navy-deep);
}
.page-hero::after {
  top: -12rem;
  right: -7rem;
  border-color: rgb(255 255 255 / 15%);
  border-radius: 0;
  box-shadow: 0 0 0 90px rgb(255 255 255 / 2%);
  transform: rotate(22deg);
}
.page-hero h1 { color: #fff; font-size: clamp(4rem, 5.5vw, 5rem); text-transform: uppercase; }
.page-hero p:not(.eyebrow) { color: rgb(255 255 255 / 72%); }
.prose p,
.prose li { color: var(--muted); }

.fact-panel {
  color: #fff;
  background: var(--princeton-navy);
  border: 0;
  border-top: 6px solid var(--princeton-orange);
  border-radius: 0;
  box-shadow: none;
}
.fact-list div { border-color: rgb(255 255 255 / 18%); }
.fact-list dt { color: var(--princeton-orange); }
.timeline-item,
.section-white .timeline-item {
  border-radius: 0;
  border-left: 5px solid var(--princeton-navy);
  background: var(--princeton-cream);
}
.timeline-item:hover { border-left-color: var(--princeton-orange); }
.timeline-item time { color: #b9570e; }

.recruitment-section {
  color: #fff;
  background:
    linear-gradient(128deg, transparent 0 72%, rgb(245 128 37 / 18%) 72% 72.4%, transparent 72.4%),
    var(--princeton-navy);
}
.recruitment-callout {
  border: 1px solid rgb(255 255 255 / 24%);
  border-radius: 0;
  background: rgb(255 255 255 / 5%);
  box-shadow: none;
}
.recruitment-lead { color: rgb(255 255 255 / 76%); }
.recruitment-section .eyebrow { color: var(--princeton-orange); }
.recruitment-details {
  color: var(--ink);
  border-radius: 0;
  border-top: 6px solid var(--princeton-orange);
  background: #fff;
}
.recruitment-details p { color: var(--muted); }

.filters,
.input,
.select,
.member-group,
.member-card,
.contact-card,
.notice,
.research-map-shell,
.publication-map-shell,
.publication-keyword,
.research-map-panel,
.research-map-detail,
.empty-state { border-radius: 0; }
.member-group,
.contact-card { border-top: 5px solid var(--princeton-navy); }
.contact-card,
.contact-card:nth-child(2),
.contact-card:nth-child(3) { background: #fff; }
.notice { color: #402209; background: #fde5d2; border-left: 5px solid var(--princeton-orange); }
.tag { border-radius: 0; }

.site-footer {
  padding-block: 4.5rem;
  color: rgb(255 255 255 / 68%);
  background: var(--princeton-navy-deep);
  border-top: 8px solid var(--princeton-orange);
}
.footer-title { color: #fff; text-transform: uppercase; }
.footer-nav a { color: #fff; }
.footer-bottom { border-top-color: rgb(255 255 255 / 18%); }

@media (max-width: 960px) {
  .nav-wrap {
    min-height: 142px;
    display: flex;
    padding-block: 1.5rem;
  }
  .brand { font-size: clamp(1.55rem, 6vw, 2.5rem); }
  .brand::after { display: none; }
  .site-nav {
    top: 100%;
    padding: 0.7rem 1rem 1.2rem;
    background: rgb(4 20 46 / 98%);
    border-top: 1px solid rgb(255 255 255 / 18%);
    box-shadow: 0 20px 40px rgb(0 0 0 / 28%);
  }
  .site-nav a { color: #fff; font-size: 1rem; }
  .site-nav a::after { display: none; }
  .hero { background: var(--princeton-navy-deep); }
  .hero-grid { min-width: 0; grid-template-columns: minmax(0, 1fr); }
  .hero-grid > * { min-width: 0; }
  .spatial-graphic { min-height: min(72vw, 520px); }
}

@media (max-width: 680px) {
  .site-header { border-top-width: 4px; }
  .nav-wrap { min-height: 108px; padding-block: 1rem; }
  .brand { gap: 0.72rem; font-size: 1.45rem; }
  .hero { min-height: 0; }
  .hero-grid > div:first-child { padding: 4rem 1.25rem; }
  .hero h1 { font-size: clamp(2.5rem, 13vw, 4.5rem); line-height: 1.1; }
  .spatial-graphic { min-height: 360px; }
  .page-hero { min-height: 0; padding-block: 4rem; }
  .page-hero h1 { font-size: clamp(2.25rem, 10.5vw, 2.75rem); }
  .section-head h2, .section-title { font-size: clamp(1.75rem, 7.5vw, 2.125rem); }
  .recruitment-callout h2 { font-size: clamp(1.75rem, 7.5vw, 2.125rem); }
  .card-number { margin-bottom: 1.5rem; }
  .recruitment-callout { padding: 1.25rem; gap: 2rem; }
  .recruitment-details { padding: 1.25rem; }
  .recruitment-details .button-row { flex-direction: column; align-items: stretch; }
  .button-row { gap: 1rem; }
  .section-head { align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Field notes and travel archive */
.travel-hero {
  position: relative;
  min-height: 720px;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #fff;
  background: var(--princeton-navy-deep);
}
.travel-hero::after {
  position: absolute;
  inset: 0;
  z-index: 1;
  content: "";
  background: linear-gradient(90deg, rgb(4 20 46 / 94%) 0%, rgb(4 20 46 / 72%) 43%, rgb(4 20 46 / 12%) 80%);
}
.travel-hero-media {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1.25fr 0.8fr;
  grid-template-rows: 1fr 1fr;
  gap: 5px;
  background: var(--princeton-navy-deep);
}
.travel-hero-media img { width: 100%; height: 100%; object-fit: cover; }
.travel-hero-media img:first-child { grid-row: 1 / 3; }
.travel-hero-content { position: relative; z-index: 2; padding-block: 7rem 5rem; }
.travel-hero h1 {
  max-width: 9ch;
  margin-block: 0.35rem 1.4rem;
  color: #fff;
  font-family: "Arial Narrow", "Aptos Display", "Apple SD Gothic Neo", sans-serif;
  font-size: clamp(4.8rem, 11vw, 10rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.07em;
}
.travel-hero-content > p:not(.eyebrow) { max-width: 46rem; color: rgb(255 255 255 / 82%); font-size: 1.12rem; }
.travel-hero .button { margin-top: 1.3rem; }
.travel-intro-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.8fr); gap: 4rem; align-items: end; }
.travel-intro .section-title { margin: 0; font-size: clamp(2.5rem, 5vw, 5rem); }
.travel-intro .section-intro { margin: 0; }
.travel-total { margin: 0; color: var(--muted); text-align: right; text-transform: uppercase; letter-spacing: 0.08em; }
.travel-total strong { display: block; color: var(--princeton-navy); font-size: 2.4rem; line-height: 1; }
.travel-index {
  display: flex;
  gap: 0.85rem;
  overflow-x: auto;
  padding: 1.5rem;
  border: 1px solid #294b70;
  border-radius: 0.6rem;
  background: radial-gradient(ellipse at 50% 0%, #244b73 0%, #133253 48%, #071b3b 100%);
  box-shadow: 0 12px 32px rgb(7 27 59 / 14%);
  scrollbar-color: var(--princeton-orange) #133253;
  scroll-padding-inline: 1.5rem;
  scroll-snap-type: x proximity;
}
.travel-index-link {
  flex: 0 0 clamp(13rem, 23vw, 18rem);
  display: grid;
  align-content: start;
  gap: 0.45rem;
  min-width: 0;
  padding: 1rem 1.1rem;
  color: var(--ink);
  background: #f5f8fc;
  border: 1px solid #d5e0ec;
  border-top: 4px solid var(--princeton-orange);
  border-radius: 0.35rem;
  font-size: 0.9rem;
  font-weight: 740;
  line-height: 1.5;
  text-decoration: none;
  overflow-wrap: anywhere;
  scroll-snap-align: start;
  transition: background 0.2s ease, transform 0.2s ease;
}
.travel-index-link span { color: #b9570e; font-size: 0.72rem; font-weight: 820; letter-spacing: 0.08em; text-transform: uppercase; }
.travel-index-link:hover { color: var(--ink); background: #fff0e3; transform: translateY(-2px); text-decoration: underline; }
.travel-index-link:focus-visible { outline: 3px solid var(--princeton-orange); outline-offset: 4px; background: #fff0e3; }
.travel-albums { display: grid; gap: 5rem; margin-top: 2rem; }
.travel-album { scroll-margin-top: 3rem; }
.travel-album-header {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 4px solid var(--princeton-navy);
}
.travel-album-number { color: var(--princeton-orange); font-size: 0.8rem; font-weight: 900; letter-spacing: 0.12em; }
.travel-album-heading h3 { margin: 0; font-size: clamp(1.6rem, 3vw, 2.7rem); line-height: 1; }
.travel-album-heading p { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.85rem; font-weight: 720; letter-spacing: 0.06em; text-transform: uppercase; }
.travel-photo-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); grid-auto-rows: 250px; gap: 0.65rem; }
.travel-photo {
  position: relative;
  min-width: 0;
  padding: 0;
  overflow: hidden;
  color: #fff;
  background: var(--princeton-navy);
  border: 0;
  cursor: zoom-in;
}
.travel-photo-featured { grid-column: span 2; grid-row: span 2; }
.travel-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 300ms ease, filter 300ms ease; }
.travel-photo::after { position: absolute; inset: 0; content: ""; background: linear-gradient(180deg, transparent 55%, rgb(4 20 46 / 68%)); opacity: 0; transition: opacity 250ms ease; }
.travel-photo:hover img,
.travel-photo:focus-visible img { transform: scale(1.035); filter: saturate(1.08); }
.travel-photo:hover::after,
.travel-photo:focus-visible::after { opacity: 1; }
.travel-photo-caption { position: absolute; right: 1rem; bottom: 0.8rem; left: 1rem; z-index: 1; text-align: left; font-size: 0.85rem; font-weight: 720; }
.travel-album-toggle {
  width: 100%;
  min-height: 52px;
  margin-top: 0.7rem;
  color: var(--princeton-navy);
  background: transparent;
  border: 2px solid var(--princeton-navy);
  font: inherit;
  font-size: 0.86rem;
  font-weight: 780;
  cursor: pointer;
}
.travel-album-toggle:hover { color: #fff; background: var(--princeton-navy); }
.travel-loading { color: var(--muted); }
.travel-lightbox {
  width: min(96vw, 1320px);
  max-width: none;
  padding: 0;
  color: #fff;
  background: var(--princeton-navy-deep);
  border: 1px solid rgb(255 255 255 / 18%);
}
.travel-lightbox::backdrop { background: rgb(2 10 24 / 88%); backdrop-filter: blur(8px); }
.travel-lightbox-bar { display: flex; justify-content: space-between; gap: 2rem; align-items: center; padding: 1.15rem 1.4rem; border-bottom: 1px solid rgb(255 255 255 / 16%); }
.travel-lightbox-bar h2 { margin: 0.2rem 0 0; color: #fff; font-size: 1.1rem; }
.travel-lightbox-bar .eyebrow { margin: 0; font-size: 0.7rem; }
.travel-lightbox-close,
.travel-lightbox-nav { color: #fff; background: rgb(255 255 255 / 8%); border: 1px solid rgb(255 255 255 / 35%); cursor: pointer; }
.travel-lightbox-close { width: 48px; height: 48px; font-size: 2rem; line-height: 1; }
.travel-lightbox-stage { min-height: min(72vh, 820px); display: grid; grid-template-columns: 58px minmax(0, 1fr) 58px; gap: 1rem; align-items: center; padding: 1rem; }
.travel-lightbox-stage img { width: 100%; height: min(72vh, 820px); object-fit: contain; }
.travel-lightbox-nav { width: 52px; height: 64px; font-size: 1.35rem; }
.travel-lightbox-count { margin: 0; padding: 0 1.4rem 1.1rem; color: rgb(255 255 255 / 68%); text-align: center; }
body:has(.travel-lightbox[open]) { overflow: hidden; }

@media (max-width: 900px) {
  .travel-hero { min-height: 630px; }
  .travel-hero::after { background: linear-gradient(0deg, rgb(4 20 46 / 94%) 0%, rgb(4 20 46 / 32%) 72%); }
  .travel-hero-media { grid-template-columns: 1fr 1fr; grid-template-rows: 0.85fr 1fr; }
  .travel-hero-media img:first-child { grid-column: 1 / 3; grid-row: auto; }
  .travel-hero-content { padding-block: 19rem 4rem; }
  .travel-intro-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .travel-photo-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: 230px; }
}

@media (max-width: 600px) {
  .travel-index { padding: 1rem; scroll-padding-inline: 1rem; }
  .travel-hero { min-height: 560px; }
  .travel-hero-content { padding-block: 17rem 3rem; }
  .travel-hero h1 { font-size: clamp(3.8rem, 20vw, 5.8rem); }
  .travel-hero-content > p:not(.eyebrow) { font-size: 1rem; }
  .travel-photo-grid { grid-auto-rows: 180px; gap: 0.4rem; }
  .travel-photo-featured { grid-column: span 2; grid-row: span 2; }
  .travel-lightbox-stage { grid-template-columns: 44px minmax(0, 1fr) 44px; gap: 0.35rem; padding: 0.5rem; }
  .travel-lightbox-stage img { height: 64vh; }
  .travel-lightbox-nav { width: 42px; height: 54px; }
}

/* Contact page refinement */
.contact-grid { gap: clamp(1rem, 2vw, 1.5rem); align-items: stretch; }
.contact-card,
.contact-card:nth-child(2),
.contact-card:nth-child(3) {
  min-height: 210px;
  justify-content: flex-start;
  gap: 2rem;
  padding: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--princeton-navy);
  background: #fff;
  border-top: 5px solid var(--princeton-navy);
  box-shadow: 0 14px 34px rgb(4 20 46 / 8%);
}
.contact-card:nth-child(2) { border-top-color: #326799; }
.contact-card:nth-child(3) { border-top-color: var(--princeton-orange); }
.contact-card-heading { display: grid; gap: 0.3rem; }
.contact-card-label { margin: 0; color: #b9570e; font-size: 0.78rem; font-weight: 850; letter-spacing: 0.14em; line-height: 1; text-transform: uppercase; }
.contact-card h2 { margin: 0; color: var(--princeton-navy); font-size: clamp(1.35rem, 2vw, 1.65rem); font-weight: 820; letter-spacing: -0.035em; }
.contact-card .contact-card-value { margin-top: auto; color: var(--princeton-navy); font-size: clamp(1.05rem, 1.4vw, 1.25rem); font-weight: 760; line-height: 1.55; text-decoration-color: var(--princeton-orange); text-decoration-thickness: 2px; text-underline-offset: 0.22em; overflow-wrap: anywhere; }
.contact-card a.contact-card-value:hover { color: #b9570e; }
.contact-address { font-style: normal; font-weight: 620; line-height: 1.75; }

.contact-guidance {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: stretch;
  margin-top: clamp(4rem, 7vw, 6.5rem);
  padding-top: clamp(3rem, 5vw, 4.5rem);
  border-top: 1px solid var(--line);
}
.contact-guidance-copy { min-width: 0; }
.contact-guidance .section-title { max-width: 14ch; margin: 0; font-size: clamp(2.25rem, 4vw, 3.75rem); line-height: 1.15; }
.contact-guidance-lead { max-width: 46rem; margin: 1.5rem 0 0; color: var(--muted); font-size: 1.08rem; line-height: 1.8; word-break: keep-all; }
.contact-checklist { display: grid; gap: 0; margin: 2rem 0 0; padding: 0; list-style: none; }
.contact-checklist li { display: grid; grid-template-columns: minmax(7rem, 0.28fr) minmax(0, 1fr); gap: 1.25rem; padding: 1.15rem 0; border-top: 1px solid var(--line); }
.contact-checklist strong { color: var(--princeton-navy); font-size: 1rem; }
.contact-checklist span { color: var(--muted); line-height: 1.7; word-break: keep-all; }
.contact-profile-card { min-width: 0; padding: clamp(1.6rem, 3vw, 2.25rem); color: #fff; background: var(--princeton-navy); border-top: 6px solid var(--princeton-orange); }
.contact-profile-card .eyebrow { margin: 0; color: var(--princeton-orange); }
.contact-profile-card h2 { margin: 0.8rem 0 0; color: #fff; font-size: clamp(1.65rem, 2.4vw, 2.15rem); }
.contact-profile-card > p:not(.eyebrow) { margin: 1.25rem 0 0; color: rgb(255 255 255 / 74%); line-height: 1.75; word-break: keep-all; }
.contact-profile-link { margin-top: 2rem; color: var(--princeton-navy); background: #fff; border-color: #fff; }
.contact-profile-link:hover { color: #fff; background: transparent; border-color: #fff; }

@media (max-width: 900px) {
  .contact-guidance { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .contact-card,
  .contact-card:nth-child(2),
  .contact-card:nth-child(3) { min-height: 0; gap: 1.5rem; }
  .contact-checklist li { grid-template-columns: 1fr; gap: 0.35rem; }
  .contact-profile-link { width: 100%; }
}