/* ============================================================
   CBI — Center for Biologic Imaging · Dark "Fluorescence" theme
   ============================================================ */

:root {
  --bg: #0a0e12;
  --bg-soft: #0d1218;
  --surface: #111823;
  --surface-2: #16202d;
  --line: rgba(230, 237, 243, 0.09);
  --line-strong: rgba(230, 237, 243, 0.16);
  --text: #e6edf3;
  --muted: #93a1b0;
  --faint: #5d6b7a;

  --cyan: #00e5ff;
  --magenta: #ff2d95;
  --green: #3dff8f;

  --glow-cyan: rgba(0, 229, 255, 0.16);
  --glow-magenta: rgba(255, 45, 149, 0.13);
  --glow-green: rgba(61, 255, 143, 0.11);

  --font-display: "Roboto Slab", Georgia, "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --sidebar-w: 292px;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 0.5em; }

::selection { background: rgba(0, 229, 255, 0.3); }

/* ------------------------------------------------ skip link */
.skip-link {
  position: fixed; top: -60px; left: 16px; z-index: 200;
  background: var(--cyan); color: #04121a; padding: 8px 16px;
  border-radius: var(--radius-sm); font-weight: 600;
  transition: top 0.2s;
}
.skip-link:focus { top: 12px; }

/* ------------------------------------------------ backdrop (mobile nav) */
.backdrop {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(4, 7, 10, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s;
}
.backdrop.show { opacity: 1; pointer-events: auto; }

/* ------------------------------------------------ sidebar */
.sidebar {
  position: fixed; top: 0; left: 0; bottom: 0; z-index: 100;
  width: var(--sidebar-w);
  background: linear-gradient(180deg, rgba(17, 24, 35, 0.92), rgba(10, 14, 18, 0.96));
  backdrop-filter: blur(14px);
  border-right: 1px solid var(--line);
  transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1);
}
.sidebar-inner {
  height: 100%;
  display: flex; flex-direction: column;
  padding: 26px 22px 18px;
  overflow-y: auto;
}
.sidebar::-webkit-scrollbar { width: 0; }

.brand { display: flex; align-items: center; justify-content: center; gap: 12px; margin-bottom: 26px; }
.brand:hover { text-decoration: none; }
.brand-logo { width: 180px; height: auto; object-fit: contain; flex: none; }

.nav { flex: 1; }
.nav-group { margin-bottom: 22px; }
.nav-label {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--faint); margin-bottom: 8px; padding-left: 2px;
}
.nav a {
  display: block; padding: 7px 10px; margin: 1px 0;
  color: var(--muted); font-size: 14.5px;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}
.nav a:hover { color: var(--text); background: rgba(230, 237, 243, 0.05); text-decoration: none; }
.nav a.active {
  color: var(--cyan);
  background: linear-gradient(90deg, var(--glow-cyan), transparent 80%);
  border-left-color: var(--cyan);
}

.sidebar-actions { display: flex; flex-direction: column; gap: 9px; margin-top: 10px; }
.sidebar-foot {
  display: flex; flex-direction: column; gap: 2px;
  margin-top: 18px; padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12px; color: var(--faint);
}

/* ------------------------------------------------ buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px; border-radius: 100px;
  font-family: var(--font-body); font-size: 14px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.16), rgba(0, 229, 255, 0.07));
  color: var(--cyan);
  border-color: rgba(0, 229, 255, 0.4);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.12), inset 0 0 12px rgba(0, 229, 255, 0.05);
}
.btn-primary:hover { box-shadow: 0 0 34px rgba(0, 229, 255, 0.25); border-color: var(--cyan); }
.btn-ghost {
  background: transparent; color: var(--muted);
  border-color: var(--line-strong);
}
.btn-ghost:hover { color: var(--text); border-color: var(--line-strong); background: rgba(230, 237, 243, 0.05); }
.btn-magenta {
  background: linear-gradient(135deg, rgba(255, 45, 149, 0.16), rgba(255, 45, 149, 0.07));
  color: var(--magenta); border-color: rgba(255, 45, 149, 0.4);
  box-shadow: 0 0 24px rgba(255, 45, 149, 0.12), inset 0 0 12px rgba(255, 45, 149, 0.05);
}
.btn-magenta:hover { box-shadow: 0 0 34px rgba(255, 45, 149, 0.25); border-color: var(--magenta); }
.btn-purple {
  background: linear-gradient(135deg, rgba(155, 107, 255, 0.16), rgba(155, 107, 255, 0.07));
  color: #b18cff;
  border-color: rgba(155, 107, 255, 0.4);
  box-shadow: 0 0 24px rgba(155, 107, 255, 0.12), inset 0 0 12px rgba(155, 107, 255, 0.05);
}
.btn-purple:hover { box-shadow: 0 0 34px rgba(155, 107, 255, 0.25); border-color: #b18cff; }

/* ------------------------------------------------ shell + topbar */
.shell { margin-left: var(--sidebar-w); min-height: 100vh; display: flex; flex-direction: column; }

.topbar {
  display: none;
  position: sticky; top: 0; z-index: 80;
  align-items: center; gap: 14px;
  padding: 12px 18px;
  background: rgba(10, 14, 18, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar-title { flex: 1; font-size: 13px; color: var(--muted); letter-spacing: 0.02em; }
.topbar-title .dot { color: var(--cyan); }
.topbar-contact {
  background: none; border: 1px solid var(--line-strong); color: var(--text);
  border-radius: 100px; padding: 7px 14px; font-size: 13px; cursor: pointer;
}
.menu-btn {
  display: flex; flex-direction: column; gap: 4.5px;
  background: none; border: 0; padding: 6px; cursor: pointer;
}
.menu-btn span { width: 20px; height: 2px; background: var(--text); border-radius: 2px; }

.main { flex: 1; width: 100%; max-width: 1240px; margin: 0 auto; padding: 54px 48px 40px; }

/* ------------------------------------------------ footer */
.footer { border-top: 1px solid var(--line); margin-top: 70px; }
.footer-inner {
  max-width: 1240px; margin: 0 auto; padding: 36px 48px 42px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 26px 40px;
}
.footer-brand { display: flex; flex-direction: column; gap: 10px; }
.footer-logo { width: 145px; height: 46px; opacity: 0.9; }
.footer-tagline {
  font-family: var(--font-display); font-style: italic; font-weight: 400;
  font-size: 22px; letter-spacing: 0.01em; padding-right: 10px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.footer-links { display: flex; align-items: center; gap: 22px; font-size: 13.5px; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--cyan); }
.footer-links a[aria-label$="on GitHub"] { display: inline-flex; }
.footer-copy { margin-left: auto; font-size: 12.5px; color: var(--faint); }

/* ------------------------------------------------ page headers */
.page-hero { position: relative; margin-bottom: 46px; padding-bottom: 26px; }
.page-hero::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px;
  background: linear-gradient(90deg, var(--cyan), rgba(255, 45, 149, 0.5), transparent);
}
.page-hero .eyebrow {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--cyan); margin-bottom: 12px;
}
.page-title {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(34px, 4.6vw, 54px); letter-spacing: -0.01em;
}
.page-title em { font-style: italic; color: var(--magenta); }
.page-sub { max-width: 720px; color: var(--muted); font-size: 17px; margin-top: 14px; }

/* ------------------------------------------------ home hero */
.home-hero { padding: 10px 0 8px; }
.home-hero .kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 18px;
}
.home-hero .kicker::before { content: ""; width: 34px; height: 1px; background: var(--cyan); }
.home-hero h1 {
  font-family: var(--font-display); font-weight: 300;
  font-size: clamp(44px, 6.4vw, 84px); line-height: 1.04; letter-spacing: -0.015em;
  margin: 0 0 10px;
}
.home-hero h1 em { font-style: italic; font-weight: 400; color: var(--magenta); }
.home-hero .lede { max-width: 640px; color: var(--muted); font-size: 18px; margin: 18px 0 30px; }
.home-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 54px; }

.mission {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 46px;
  align-items: center; margin: 26px 0 80px;
}
.mission-text h2 {
  font-family: var(--font-display); font-weight: 400; font-size: 32px; margin-bottom: 18px;
}
.mission-text h2 em { font-style: italic; color: var(--cyan); }
.mission-text p { color: var(--muted); margin: 0 0 16px; }
.mission-text p strong { color: var(--text); font-weight: 500; }
.mission-art { position: relative; }
.mission-art img {
  width: 100%; border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow), 0 0 80px var(--glow-cyan);
}
.mission-art::before {
  content: ""; position: absolute; inset: -1px; border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.35), transparent 40%, rgba(255, 45, 149, 0.3));
  filter: blur(0); pointer-events: none; mix-blend-mode: screen; opacity: 0.5;
}
.gradient-bar {
  height: 4px; border-radius: 2px; margin-bottom: 80px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.22), 0 0 18px rgba(255, 45, 149, 0.18);
}

/* ------------------------------------------------ news */
.news-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 20px;
  margin-bottom: 26px;
}
.news-head h2 { font-family: var(--font-display); font-weight: 400; font-size: 34px; margin: 0; }
.news-head h2 em { font-style: italic; color: var(--magenta); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card {
  display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.news-card:hover {
  transform: translateY(-4px); border-color: var(--line-strong);
  box-shadow: var(--shadow), 0 0 40px var(--glow-cyan);
}
.news-card .thumb { aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-soft); }
.news-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.news-card:hover .thumb img { transform: scale(1.05); }
.news-hero {
  border-radius: var(--radius-sm); overflow: hidden; margin-bottom: 20px; background: var(--bg-soft);
}
.news-hero img { width: 100%; display: block; aspect-ratio: 16 / 9; object-fit: cover; }
.news-archive-link { text-align: center; margin-top: 30px; }
.news-archive-link a {
  font-size: 13.5px; color: var(--muted); letter-spacing: 0.04em;
  border-bottom: 1px solid var(--line-strong); padding-bottom: 3px;
}
.news-archive-link a:hover { color: var(--cyan); border-color: var(--cyan); }

.archive-list { margin-top: 34px; }
.archive-item { padding: 24px 0; border-bottom: 1px solid var(--line); }
.archive-item.has-image { display: flex; gap: 20px; align-items: flex-start; }
.archive-item .archive-thumb { flex: none; width: 150px; }
.archive-item .archive-thumb img {
  display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover;
  border-radius: var(--radius-sm); border: 1px solid var(--line-strong);
}
.archive-item .archive-body { flex: 1; min-width: 0; }
.archive-item .date { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--cyan); margin-bottom: 8px; }
.archive-item h3 { font-family: var(--font-display); font-weight: 500; font-size: 22px; margin-bottom: 8px; }
.archive-item h3 a { color: var(--text); }
.archive-item h3 a:hover { color: var(--cyan); }
.archive-item p { margin: 0; color: var(--muted); font-size: 14.5px; }
.news-card .body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.news-card .date { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--cyan); }
.news-card h3 { font-size: 18px; font-weight: 600; margin: 0; }
.news-card p { color: var(--muted); font-size: 14px; margin: 0; flex: 1; }
.news-card .more { font-size: 13px; color: var(--text); }

/* ------------------------------------------------ generic cards */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ------------------------------------------------ staff */
.faculty-card {
  display: grid; grid-template-columns: 300px 1fr; gap: 34px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px; margin-bottom: 26px;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.faculty-card:hover { border-color: var(--line-strong); box-shadow: 0 0 50px var(--glow-magenta); }
.faculty-card .photo { position: relative; align-self: start; }
.faculty-card .photo img {
  width: 100%; border-radius: var(--radius-sm); border: 1px solid var(--line-strong);
  aspect-ratio: 4 / 4.4; object-fit: cover;
}
.faculty-card h3 { font-family: var(--font-display); font-weight: 500; font-size: 27px; margin-bottom: 4px; }
.faculty-card .role { color: var(--cyan); font-size: 14.5px; margin-bottom: 14px; }
.faculty-card .bio { color: var(--muted); font-size: 15px; margin-bottom: 16px; }
.faculty-links { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 14px; border-radius: 100px;
  border: 1px solid var(--line-strong); color: var(--text); font-size: 13px;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.chip:hover { border-color: var(--cyan); color: var(--cyan); text-decoration: none; background: var(--glow-cyan); }

.staff-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.person-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px; text-align: center;
  transition: transform 0.25s, border-color 0.25s;
}
.person-card:hover { transform: translateY(-3px); border-color: var(--line-strong); }
.person-card img {
  width: 110px; height: 110px; object-fit: cover; border-radius: 50%;
  margin: 0 auto 14px; border: 2px solid rgba(0, 229, 255, 0.35);
}
.person-card h4 { font-size: 16px; margin: 0 0 4px; }
.person-card .role { font-size: 12.5px; color: var(--muted); margin-bottom: 10px; min-height: 34px; }
.person-card a { font-size: 12.5px; word-break: break-all; }

.section-title {
  font-family: var(--font-display); font-weight: 400; font-size: 30px;
  margin: 56px 0 22px;
}
.section-title em { font-style: italic; color: var(--cyan); }

/* ------------------------------------------------ equipment */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.filter-pill {
  padding: 8px 18px; border-radius: 100px; font-size: 13.5px; cursor: pointer;
  background: transparent; color: var(--muted); border: 1px solid var(--line-strong);
  transition: all 0.2s;
}
.filter-pill:hover { color: var(--text); }
.filter-pill.active {
  color: #04121a; background: var(--cyan); border-color: var(--cyan);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.35); font-weight: 600;
}
.equip-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.equip-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.equip-card:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: var(--shadow), 0 0 44px var(--glow-green); }
.equip-card .thumb { aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-soft); }
.equip-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.equip-card:hover .thumb img { transform: scale(1.06); }
.equip-card .body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.equip-card h3 { font-size: 16.5px; margin: 0; }
.equip-card .desc { color: var(--muted); font-size: 13.5px; flex: 1; }
.equip-card .meta { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 12px; color: var(--faint); margin-top: 10px; }
.equip-card .meta .room { color: var(--green); font-family: "JetBrains Mono", monospace; }
.equip-card .tier-tag {
  display: inline-block; align-self: flex-start;
  font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 3px 9px; border-radius: 100px; margin-bottom: 4px;
  background: var(--glow-cyan); color: var(--cyan); border: 1px solid rgba(0, 229, 255, 0.25);
}
.equip-card.tier-limited .tier-tag { background: var(--glow-magenta); color: var(--magenta); border-color: rgba(255, 45, 149, 0.25); }
.equip-card.tier-cbi .tier-tag { background: var(--glow-green); color: var(--green); border-color: rgba(61, 255, 143, 0.25); }
.equip-card.hidden { display: none; }

/* ------------------------------------------------ gallery / masonry */
.masonry { columns: 4 220px; column-gap: 18px; }
.masonry-item {
  break-inside: avoid; margin-bottom: 18px;
  border-radius: var(--radius-sm); overflow: hidden;
  border: 1px solid var(--line); cursor: zoom-in;
  transition: border-color 0.2s, box-shadow 0.25s, transform 0.25s;
  background: var(--surface);
}
.masonry-item:hover { border-color: rgba(0, 229, 255, 0.45); box-shadow: 0 0 34px var(--glow-cyan); transform: translateY(-2px); }
.masonry-item img { width: 100%; }

/* ------------------------------------------------ periodic table */
.pt-grid {
  display: grid;
  grid-template-columns: repeat(18, minmax(0, 1fr));
  gap: 4px;
}
.pt-cell {
  position: relative; aspect-ratio: 1 / 1.1;
  border-radius: 6px; overflow: hidden;
  border: 1px solid var(--line); cursor: zoom-in;
  background: var(--surface);
  transition: transform 0.18s, border-color 0.18s, box-shadow 0.18s, z-index 0s;
}
.pt-cell:hover {
  transform: scale(1.6); z-index: 10;
  border-color: var(--cyan);
  box-shadow: 0 0 30px var(--glow-cyan), var(--shadow);
}
.pt-cell img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.9; }
.pt-gap { grid-column: span 1; }
.pt-legend {
  display: flex; flex-wrap: wrap; gap: 16px; margin: 26px 0 40px;
  font-size: 13px; color: var(--muted);
}
.pt-legend span b { color: var(--cyan); font-weight: 600; }
.pt-credits {
  display: grid; grid-template-columns: 5fr 7fr; gap: 28px; align-items: center;
  margin-top: 44px; padding: 24px; border: 1px solid var(--line);
  border-radius: var(--radius); background: var(--surface);
}
.pt-credits p { color: var(--muted); font-size: 14px; margin: 0; }
.pt-slideshow {
  position: relative; aspect-ratio: 4 / 3; border-radius: calc(var(--radius) - 2px);
  overflow: hidden; border: 1px solid var(--line); background: var(--surface-2);
}
.pt-slideshow img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transition: opacity 0.9s ease;
}
.pt-slideshow img.active { opacity: 1; }
.pt-slideshow-dots {
  position: absolute; left: 0; right: 0; bottom: 10px; display: flex;
  justify-content: center; gap: 8px; z-index: 2;
}
.pt-slideshow-dots button {
  width: 9px; height: 9px; border-radius: 50%; border: none; padding: 0;
  background: rgba(230, 237, 243, 0.35); cursor: pointer; transition: background 0.2s ease;
}
.pt-slideshow-dots button.active { background: var(--cyan); }

/* ------------------------------------------------ protocols / publications / docs */
.doc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.doc-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.doc-card:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: var(--shadow), 0 0 40px var(--glow-magenta); }
.doc-card .art { aspect-ratio: 16 / 8; background-size: cover; background-position: center; position: relative; }
.doc-card .art::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 30%, rgba(17, 24, 35, 0.9)); }
.doc-card .body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.doc-card h3 { font-size: 16px; margin: 0; }
.doc-card p { color: var(--muted); font-size: 13.5px; margin: 0; flex: 1; }
.doc-card .dl { align-self: flex-start; margin-top: 6px; }

.pub-list { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.pub-item {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 15px 22px; border-bottom: 1px solid var(--line);
  transition: background 0.15s;
}
.pub-item:last-child { border-bottom: 0; }
.pub-item:hover { background: rgba(230, 237, 243, 0.03); }
.pub-item .t { color: var(--text); font-size: 14.5px; }
.pub-item:hover .t { color: var(--cyan); }
.pub-item .pdf { flex: none; font-size: 12px; letter-spacing: 0.08em; color: var(--magenta); }

.cover-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cover-item {
  border-radius: var(--radius-sm); overflow: hidden; cursor: zoom-in;
  border: 1px solid var(--line); transition: border-color 0.2s, box-shadow 0.2s;
}
.cover-item:hover { border-color: rgba(255, 45, 149, 0.5); box-shadow: 0 0 30px var(--glow-magenta); }

.featured-pub {
  display: grid; grid-template-columns: 300px 1fr; gap: 34px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px; margin-bottom: 24px;
}
.featured-pub img { width: 100%; border-radius: var(--radius-sm); border: 1px solid var(--line-strong); }
.featured-pub h3 { font-family: var(--font-display); font-weight: 500; font-size: 22px; }
.featured-pub .authors { color: var(--muted); font-size: 13.5px; margin-bottom: 12px; font-style: italic; }
.featured-pub .abstract { color: var(--muted); font-size: 14px; }

.tabs { display: flex; gap: 10px; margin-bottom: 30px; flex-wrap: wrap; }
.tab-btn {
  padding: 9px 20px; border-radius: 100px; cursor: pointer;
  background: transparent; border: 1px solid var(--line-strong);
  color: var(--muted); font-size: 14px; transition: all 0.2s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { background: rgba(255, 45, 149, 0.14); border-color: rgba(255, 45, 149, 0.5); color: var(--magenta); font-weight: 600; }
.tab-panel[hidden] { display: none; }

/* ------------------------------------------------ usage policy */
.policy-layout { display: grid; grid-template-columns: 280px 1fr; gap: 46px; align-items: start; }
.policy-toc { position: sticky; top: 30px; }
.policy-toc .nav-label { margin-bottom: 10px; }
.policy-toc a {
  display: block; padding: 6px 10px; font-size: 13.5px; color: var(--muted);
  border-left: 2px solid transparent; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.policy-toc a:hover { color: var(--cyan); border-left-color: var(--cyan); background: linear-gradient(90deg, var(--glow-cyan), transparent); }
.policy-section { scroll-margin-top: 30px; margin-bottom: 52px; }
.policy-section h2 {
  font-family: var(--font-display); font-weight: 500; font-size: 26px;
  padding-bottom: 12px; border-bottom: 0; margin-bottom: 18px;
  position: relative;
}
.policy-section h2::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.6), rgba(255, 45, 149, 0.5) 60%, transparent);
}
.prose { color: var(--muted); font-size: 15.5px; }
.prose p { margin: 0 0 14px; }
.prose strong { color: var(--text); font-weight: 600; }
.prose a { color: var(--cyan); }
.prose ul { padding-left: 20px; margin: 0 0 14px; }
.prose li { margin-bottom: 6px; }

.staff-phones { margin-top: 34px; color: var(--muted); font-size: 14.5px; }

.partner-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 34px; }
.partner-card {
  display: flex; flex-direction: column; align-items: flex-start; gap: 10px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 24px; color: var(--text);
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.partner-card:hover { transform: translateY(-4px); border-color: rgba(0, 229, 255, 0.4); box-shadow: var(--shadow), 0 0 44px var(--glow-cyan); text-decoration: none; }
.partner-card h3 { font-size: 18px; margin: 0; }
.partner-card p { color: var(--muted); font-size: 14px; margin: 0; flex: 1; }
.partner-card .more { color: var(--cyan); font-size: 13.5px; }

.link-card { --glow-cyan: rgba(255, 45, 149, 0.13); }
.link-card-media { width: 100%; aspect-ratio: 16 / 8; border-radius: var(--radius-sm); overflow: hidden; background: #fff; }
.link-card-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.policy-body p { margin: 0 0 12px; }
.policy-body .dash-item { margin: 0 0 8px; padding-left: 14px; border-left: 2px solid rgba(0, 229, 255, 0.25); }

/* ------------------------------------------------ maps / location */
.map-embed img { display: block; width: 100%; }
.map-embed.map-plan img { aspect-ratio: 16 / 10; object-fit: fill; }
.map-embed[data-lightbox] { cursor: zoom-in; }

  .map-location { display: grid; grid-template-columns: minmax(280px, 1fr) 1.5fr; gap: 30px; align-items: center; margin: 30px 0; }
.map-info .address-lines { color: var(--muted); font-size: 15.5px; margin: 0 0 14px; }
.map-info .map-note { color: var(--faint); font-size: 14px; margin: 0 0 20px; }
.map-embed { margin: 0; border: 1px solid var(--line-strong); border-radius: var(--radius); overflow: hidden; background: #fff; box-shadow: var(--shadow); }
.map-embed iframe { display: block; width: 100%; aspect-ratio: 16 / 10; border: 0; }

/* ------------------------------------------------ video */
.video-wrap {
  position: relative; padding-top: 56.25%; border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--line-strong);
  box-shadow: var(--shadow), 0 0 60px var(--glow-cyan);
  max-width: 900px;
}
.video-wrap iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* ------------------------------------------------ forms / sample page */
.sample-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 34px; }
.sample-card {
  display: flex; flex-direction: column; align-items: flex-start; gap: 12px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px 26px;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.sample-card:hover { transform: translateY(-4px); border-color: rgba(61, 255, 143, 0.4); box-shadow: var(--shadow), 0 0 44px var(--glow-green); }
.sample-card .icon { font-size: 30px; }
.sample-card .icon img { width: 84px; height: 58px; object-fit: cover; border-radius: 6px; border: 1px solid var(--line-strong); display: block; }
.sample-card h3 { font-size: 19px; margin: 0; }
.sample-card p { color: var(--muted); font-size: 14px; margin: 0; flex: 1; }
.sample-links { display: flex; gap: 10px; }

/* ------------------------------------------------ contact panel */
.contact-panel {
  position: fixed; inset: 0; z-index: 150;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  background: rgba(4, 7, 10, 0.72);
  backdrop-filter: blur(8px);
}
.contact-panel[hidden] { display: none; }
.contact-card {
  position: relative; width: 100%; max-width: 680px; max-height: 88vh; overflow-y: auto;
  background: linear-gradient(160deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line-strong); border-radius: 18px;
  padding: 36px 34px; box-shadow: var(--shadow), 0 0 80px rgba(0, 229, 255, 0.08);
}
.contact-close {
  position: absolute; top: 14px; right: 14px;
  background: none; border: 1px solid var(--line-strong); color: var(--muted);
  width: 34px; height: 34px; border-radius: 50%; cursor: pointer; font-size: 13px;
}
.contact-close:hover { color: var(--text); border-color: var(--line-strong); }
.contact-title { font-family: var(--font-display); font-weight: 400; font-size: 30px; }
.contact-title em { font-style: italic; color: var(--magenta); }
.contact-intro { color: var(--muted); margin-bottom: 24px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 20px; }
.contact-block {
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 16px 18px; display: flex; flex-direction: column; gap: 3px;
  background: rgba(10, 14, 18, 0.5);
}
.contact-label {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--cyan); margin-bottom: 5px;
}
.contact-block a { font-size: 13.5px; color: var(--text); }
.contact-block a:hover { color: var(--cyan); }
.contact-block .fax-line { display: block; font-size: 13.5px; color: var(--text); }
.contact-sub { font-size: 11.5px; color: var(--faint); margin-top: 3px; }
.contact-note { font-size: 13.5px; color: var(--muted); border-top: 1px solid var(--line); padding-top: 16px; margin: 0; }

/* ------------------------------------------------ lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 160;
  display: flex; align-items: center; justify-content: center;
  background: rgba(4, 6, 9, 0.92);
  backdrop-filter: blur(10px);
}
.lightbox[hidden] { display: none; }
.lightbox-figure { margin: 0; max-width: 88vw; max-height: 86vh; }
.lightbox-figure img { max-width: 88vw; max-height: 82vh; width: auto; height: auto; border-radius: 8px; box-shadow: 0 0 100px rgba(0, 229, 255, 0.12); }
.lightbox-caption { position: absolute; bottom: 26px; left: 0; right: 0; text-align: center; color: var(--muted); font-size: 14px; }
.lightbox-close, .lightbox-nav {
  position: absolute; z-index: 2;
  background: rgba(17, 24, 35, 0.7); border: 1px solid var(--line-strong);
  color: var(--text); border-radius: 50%; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.2s, color 0.2s;
}
.lightbox-close:hover, .lightbox-nav:hover { border-color: var(--cyan); color: var(--cyan); }
.lightbox-close { top: 22px; right: 22px; width: 42px; height: 42px; font-size: 14px; }
.lightbox-nav { top: 50%; transform: translateY(-50%); width: 46px; height: 46px; font-size: 22px; }
.lightbox-prev { left: 26px; }
.lightbox-next { right: 26px; }

/* ------------------------------------------------ reveal animation */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ------------------------------------------------ responsive */
@media (max-width: 1100px) {
  .card-grid, .equip-grid, .doc-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .staff-grid, .cover-grid { grid-template-columns: repeat(3, 1fr); }
  .card-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 960px) {
  .sidebar { transform: translateX(-100%); box-shadow: var(--shadow); }
  .sidebar.open { transform: none; }
  .shell { margin-left: 0; }
  .topbar { display: flex; }
  .mission { grid-template-columns: 1fr; gap: 30px; }
  .pt-credits { grid-template-columns: 1fr; }
  .faculty-card, .featured-pub { grid-template-columns: 1fr; }
  .faculty-card .photo { max-width: 380px; }
  .policy-layout { grid-template-columns: 1fr; }
  .policy-toc { position: static; display: none; }
  .map-location { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .main { padding: 34px 20px 30px; }
  .footer-inner { padding: 30px 20px 36px; }
  .card-grid, .equip-grid, .doc-grid, .news-grid, .sample-grid, .partner-grid { grid-template-columns: 1fr; }
  .staff-grid, .cover-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .masonry { columns: 2 140px; }
  .pt-cell .sym { font-size: 8px; }
  .pt-cell .num { display: none; }
  .footer-copy { margin-left: 0; }
}