/* ============================================================
   POSM — Quantum Optics Research Group
   Design System — Core CSS
   Inspired by: QuEra, Alice & Bob, PsiQuantum, Quantinuum
   ============================================================ */

/* ─── Google Fonts ─── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

/* ─── CSS Custom Properties ─── */
:root {
  /* Colors */
  --bg-base:        #04040d;
  --bg-surface:     #080816;
  --bg-card:        rgba(255,255,255,0.035);
  --bg-card-hover:  rgba(255,255,255,0.065);
  --border:         rgba(255,255,255,0.08);
  --border-accent:  rgba(160,100,255,0.35);

  --white:          #ffffff;
  --off-white:      #e8e8f0;
  --muted:          rgba(232,232,240,0.55);

  --purple:         #a855f7;
  --purple-bright:  #c084fc;
  --purple-glow:    rgba(168,85,247,0.18);
  --magenta:        #e040fb;
  --cyan:           #22d3ee;
  --cyan-dim:       rgba(34,211,238,0.15);
  --blue:           #60a5fa;

  --grad-primary:   linear-gradient(135deg, #a855f7 0%, #e040fb 50%, #22d3ee 100%);
  --grad-subtle:    linear-gradient(135deg, rgba(168,85,247,0.15) 0%, rgba(224,64,251,0.08) 100%);
  --grad-hero:      radial-gradient(ellipse 80% 60% at 50% 40%, rgba(120,40,200,0.25) 0%, rgba(4,4,13,0) 70%);

  /* Typography */
  --font-display:   'Space Grotesk', sans-serif;
  --font-body:      'Inter', sans-serif;

  /* Spacing */
  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   1.5rem;
  --space-lg:   2.5rem;
  --space-xl:   4rem;
  --space-2xl:  6rem;
  --space-3xl:  9rem;

  /* Layout */
  --container:     1200px;
  --container-sm:  900px;
  --nav-h:         72px;
  --radius:        8px;
  --radius-lg:     16px;
  --radius-pill:   999px;

  /* Transitions */
  --ease:          cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out:      cubic-bezier(0, 0, 0.2, 1);
  --duration:      260ms;
  --duration-slow: 500ms;
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; color-scheme: dark; }
body {
  font-family: var(--font-body);
  background-color: var(--bg-base);
  color: var(--off-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--white);
}
.display-xl {
  font-size: clamp(3.2rem, 6vw, 6.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
}
.display-lg {
  font-size: clamp(2.4rem, 4vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.1;
}
.display-md {
  font-size: clamp(1.8rem, 2.5vw, 2.8rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}
.heading-sm {
  font-size: clamp(1.2rem, 1.5vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}
.body-lg { font-size: clamp(1rem, 1.2vw, 1.125rem); line-height: 1.75; }
.body-md { font-size: 1rem; line-height: 1.7; }
.body-sm { font-size: 0.875rem; line-height: 1.6; }
.label {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--purple);
}
.text-muted  { color: var(--muted); }
.text-accent { color: var(--purple-bright); }
.text-cyan   { color: var(--cyan); }
.text-white  { color: var(--white); }

/* ─── Layout Utilities ─── */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}
.container-sm {
  width: 100%;
  max-width: var(--container-sm);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}
.section { padding-block: var(--space-3xl); }
.section-sm { padding-block: var(--space-2xl); }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.grid { display: grid; }

/* ─── Accent / Divider ─── */
.section-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}
.section-label::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--grad-primary);
}

/* ─── Glow effect ─── */
.glow-purple {
  box-shadow: 0 0 60px rgba(168,85,247,0.2), 0 0 120px rgba(168,85,247,0.08);
}
.glow-text {
  text-shadow: 0 0 40px rgba(168,85,247,0.5);
}

/* ─── Gradient text ─── */
.grad-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all var(--duration) var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-primary);
  color: var(--white);
  border: 1px solid transparent;
}
.btn-primary:hover {
  opacity: 0.88;
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(168,85,247,0.35);
}
.btn-ghost {
  background: transparent;
  color: var(--off-white);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--border-accent);
  color: var(--white);
  background: var(--purple-glow);
}
.btn-sm {
  padding: 0.55rem 1.25rem;
  font-size: 0.8rem;
}
.btn svg, .btn-arrow { transition: transform var(--duration) var(--ease); }
.btn:hover .btn-arrow { transform: translateX(4px); }

/* ─── Cards ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--duration) var(--ease);
}
.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-2px);
}
.card-image {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: #0d0d1f;
}
.card-image img { width: 100%; height: 100%; object-fit: cover; }

/* ─── Navigation ─── */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background var(--duration-slow) var(--ease),
              box-shadow var(--duration-slow) var(--ease);
}
#navbar.scrolled {
  background: rgba(4,4,13,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}
.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: var(--white);
  flex-shrink: 0;
}
.nav-logo-mark {
  width: 40px;
  height: 40px;
  display: block;
  flex-shrink: 0;
  background: url('../images/posm-dot-p.png') center/contain no-repeat;
}
.nav-logo-img {
  display: none;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.nav-item {
  position: relative;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.5rem 0.85rem;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  border-radius: var(--radius);
  transition: color var(--duration) var(--ease), background var(--duration) var(--ease);
  cursor: pointer;
}
.nav-link:hover, .nav-link.active {
  color: var(--white);
  background: rgba(255,255,255,0.06);
}
.nav-link svg { width: 14px; height: 14px; transition: transform var(--duration) var(--ease); }
.nav-item:hover .nav-link svg { transform: rotate(180deg); }

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(8,8,22,0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0.5rem;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-6px);
  transition: all var(--duration) var(--ease);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.05);
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown a {
  display: block;
  padding: 0.6rem 1rem;
  font-size: 0.875rem;
  color: var(--muted);
  border-radius: 6px;
  transition: color var(--duration) var(--ease), background var(--duration) var(--ease);
}
.nav-dropdown a:hover {
  color: var(--white);
  background: var(--purple-glow);
}

/* Nav CTA */
.nav-cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  border-radius: 6px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--off-white);
  border-radius: 2px;
  transition: all var(--duration) var(--ease);
}
.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0; bottom: 0;
  background: rgba(4,4,13,0.97);
  backdrop-filter: blur(20px);
  z-index: 999;
  padding: 2rem 1.5rem;
  overflow-y: auto;
  flex-direction: column;
  gap: 0.5rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu-link {
  padding: 0.85rem 1rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--muted);
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all var(--duration) var(--ease);
}
.mobile-menu-link:hover {
  color: var(--white);
  border-color: var(--border);
  background: var(--bg-card);
}
.mobile-menu-sub {
  padding: 0.6rem 1rem 0.6rem 2rem;
  font-size: 0.875rem;
  color: var(--muted);
  display: block;
  border-radius: 6px;
  transition: color var(--duration) var(--ease);
}
.mobile-menu-sub:hover { color: var(--white); }
.mobile-menu-divider {
  height: 1px;
  background: var(--border);
  margin: 0.5rem 0;
}

/* ─── Hero ─── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: var(--space-3xl);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero_bg.png');
  background-size: cover;
  background-position: center 30%;
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(4,4,13,0.35) 0%,
    rgba(4,4,13,0.1) 40%,
    rgba(4,4,13,0.85) 85%,
    var(--bg-base) 100%
  );
}
/* Animated particle canvas */
#hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.4;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(168,85,247,0.12);
  border: 1px solid rgba(168,85,247,0.3);
  border-radius: var(--radius-pill);
  padding: 0.35rem 1rem;
  font-size: 0.78rem;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--purple-bright);
  margin-bottom: var(--space-lg);
}
.hero-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--purple-bright);
  animation: pulse 2s ease infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero-title {
  max-width: 820px;
  margin-bottom: var(--space-md);
}
.hero-sub {
  max-width: 560px;
  color: var(--muted);
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  line-height: 1.75;
  margin-bottom: var(--space-lg);
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  right: clamp(1.25rem, 4vw, 3rem);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.7;
}
.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 1px solid var(--muted);
  border-bottom: 1px solid var(--muted);
  transform: rotate(45deg);
  animation: bounce 2s ease infinite;
}
@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(4px); }
}

/* ─── Stats Bar ─── */
.stats-bar {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--space-lg) 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
}
.stat-item {
  background: var(--bg-base);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
}
.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.35rem;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--muted);
  font-family: var(--font-display);
  letter-spacing: 0.05em;
}

/* ─── Feature Sections (alternating) ─── */
.feature-section {
  padding-block: var(--space-3xl);
  overflow: hidden;
}
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
}
.feature-grid.reverse { direction: rtl; }
.feature-grid.reverse > * { direction: ltr; }
.feature-text { max-width: 480px; }
.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  position: relative;
}
.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease);
}
.feature-image:hover img { transform: scale(1.03); }
.feature-image::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-accent);
  z-index: 1;
  pointer-events: none;
}

/* ─── Research Pills (carousel/tabs) ─── */
.research-tabs {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding-block: var(--space-3xl);
}
.tabs-header {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}
.tab-btn {
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
  border: 1px solid var(--border);
  background: transparent;
  transition: all var(--duration) var(--ease);
}
.tab-btn:hover { color: var(--white); border-color: var(--border-accent); }
.tab-btn.active {
  background: var(--grad-primary);
  border-color: transparent;
  color: var(--white);
}
.tab-panel { display: none; }
.tab-panel.active { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); align-items: center; }
.tab-panel-text { max-width: 460px; }
.tab-panel-image { border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 4/3; }
.tab-panel-image img { width: 100%; height: 100%; object-fit: cover; }

/* ─── History section ─── */
.history-section {
  padding-block: var(--space-3xl);
  position: relative;
}
.history-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, var(--border-accent) 30%, var(--border-accent) 70%, transparent);
}
.history-inner {
  max-width: 700px;
  margin-inline: auto;
  text-align: center;
}
.history-year {
  font-family: var(--font-display);
  font-size: clamp(4rem, 8vw, 8rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.25;
  line-height: 1;
  margin-bottom: -1.5rem;
  position: relative;
  z-index: 0;
}
.history-text { position: relative; z-index: 1; }

/* ─── News Cards ─── */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration) var(--ease);
}
.news-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(168,85,247,0.1);
}
.news-card-img {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #1a0a2e 0%, #0d1a2e 100%);
  overflow: hidden;
}
.news-card-img img { width: 100%; height: 100%; object-fit: cover; }
.news-card-body { padding: 1.5rem; }
.news-card-date {
  font-size: 0.75rem;
  color: var(--purple);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.news-card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--white);
  margin-bottom: 0.75rem;
}
.news-card-excerpt {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.65;
}
.news-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-display);
  color: var(--purple-bright);
  transition: gap var(--duration) var(--ease);
}
.news-card-link:hover { gap: 0.7rem; }

/* ─── Sponsors CTA ─── */
.sponsor-cta {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding-block: var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.sponsor-cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(168,85,247,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.sponsor-logo-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  margin-top: var(--space-xl);
  opacity: 0.5;
}
.sponsor-logo-placeholder {
  height: 36px;
  width: 120px;
  background: var(--border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--muted);
  font-family: var(--font-display);
  letter-spacing: 0.1em;
}

/* ─── Contact CTA ─── */
.contact-cta {
  padding-block: var(--space-3xl);
  text-align: center;
}

/* ─── Footer ─── */
footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding-block: var(--space-2xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}
.footer-brand p {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.7;
  margin-top: 0.75rem;
  max-width: 280px;
}
.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 1rem;
}
.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--muted);
  padding: 0.3rem 0;
  transition: color var(--duration) var(--ease);
}
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
}

/* ─── Inner Page Hero ─── */
.page-hero {
  padding-top: calc(var(--nav-h) + var(--space-3xl));
  padding-bottom: var(--space-3xl);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--grad-hero);
  pointer-events: none;
}
.page-hero-content { position: relative; z-index: 1; }

/* ─── Team Page ─── */
.team-slideshow {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 21/9;
  background: #0d0d1f;
  margin-bottom: var(--space-3xl);
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.team-slideshow-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
}
.team-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s ease-in-out;
  z-index: 1;
}
.team-slide.active {
  opacity: 1;
  z-index: 2;
}
.slide-image-wrapper {
  width: 100%;
  height: 100%;
  position: relative;
}
.slide-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  image-rendering: high-quality;
  -ms-interpolation-mode: bicubic;
}
.team-photo-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  color: var(--muted);
  background: linear-gradient(135deg, #0d0d2a 0%, #0a1020 100%);
}
.slide-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--duration) var(--ease);
}
.slide-btn:hover {
  background: rgba(168, 85, 247, 0.2);
  border-color: var(--border-accent);
  color: var(--white);
  transform: translateY(-50%) scale(1.05);
}
.slide-btn:focus-visible {
  outline: 2px solid var(--purple-bright);
  outline-offset: 2px;
}
.slide-btn.prev { left: 1.5rem; }
.slide-btn.next { right: 1.5rem; }
.slide-indicators {
  position: absolute;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  z-index: 10;
}
.slide-indicator {
  width: 24px;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
}
.slide-indicator.active {
  background: var(--purple-bright);
  width: 36px;
  box-shadow: 0 0 8px var(--purple-bright);
}
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}
.member-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration) var(--ease);
}
.member-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(168,85,247,0.1);
}
.member-avatar {
  position: relative;
  aspect-ratio: 1;
  background: linear-gradient(135deg, #1a0a2e 0%, #0a1030 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.member-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  image-rendering: high-quality;
  -ms-interpolation-mode: bicubic;
}
.avatar-placeholder {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--purple-bright);
}
.member-info { padding: 1.25rem; }
.member-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.2rem;
}
.member-role {
  font-size: 0.8rem;
  color: var(--purple-bright);
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.member-detail {
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.55;
}
.advisor-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-lg);
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}
.advisor-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1a0a2e 0%, #0a1030 100%);
  border: 2px solid var(--border-accent);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.advisor-avatar img { width: 100%; height: 100%; object-fit: cover; }

/* ─── Research Landing Page ─── */
.research-landing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.research-landing-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration) var(--ease);
  text-decoration: none;
}
.research-landing-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(168,85,247,0.12);
}
.research-landing-card-img {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: linear-gradient(135deg, #1a0a2e 0%, #0d1a2e 100%);
}
.research-landing-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease);
}
.research-landing-card:hover .research-landing-card-img img {
  transform: scale(1.04);
}
.research-landing-card-title {
  padding: 1.5rem 1.75rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.3;
}

/* ─── Research Sub-Page Layout (sidebar + content) ─── */
.research-page-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 3rem;
  align-items: start;
}

/* Sidebar */
.research-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
}
.research-sidebar-heading {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.research-sidebar-link {
  display: block;
  padding: 0.55rem 0.75rem;
  margin-bottom: 0.15rem;
  font-size: 0.875rem;
  color: var(--muted);
  border-radius: var(--radius);
  transition: all var(--duration) var(--ease);
  text-decoration: none;
  line-height: 1.4;
  border-left: 2px solid transparent;
}
.research-sidebar-link:hover {
  color: var(--white);
  background: rgba(255,255,255,0.04);
}
.research-sidebar-link.active {
  color: var(--purple-bright);
  background: var(--purple-glow);
  font-weight: 600;
  border-left-color: var(--purple);
}
.research-sidebar-back {
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.82rem;
  border-left: none !important;
}
.research-sidebar-back:hover {
  color: var(--purple-bright);
  background: transparent;
}

/* Content area */
.research-page-content {
  max-width: 740px;
}
.research-page-image {
  margin-top: 2rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, #1a0a2e 0%, #0d1a2e 100%);
}
.research-page-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ─── Publications ─── */
.pub-list { display: flex; flex-direction: column; gap: 1.5rem; }
.pub-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--duration) var(--ease);
}
.pub-card:hover { border-color: var(--border-accent); }
.pub-status {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}
.pub-status.preprint { background: rgba(34,211,238,0.12); color: var(--cyan); border: 1px solid rgba(34,211,238,0.3); }
.pub-status.published { background: rgba(168,85,247,0.12); color: var(--purple-bright); border: 1px solid rgba(168,85,247,0.3); }
.pub-status.in-prep { background: rgba(255,255,255,0.06); color: var(--muted); border: 1px solid var(--border); }
.pub-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.4;
  margin-bottom: 0.5rem;
}
.pub-authors { font-size: 0.875rem; color: var(--muted); margin-bottom: 0.5rem; }
.pub-abstract {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.65;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

/* ─── Publications Layout (filter + list) ─── */
.pub-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-xl);
  align-items: start;
}
.pub-filter-panel {
  position: sticky;
  top: calc(var(--nav-h) + var(--space-md));
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}
.pub-filter-heading {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--space-md);
}
.pub-filter-section-label {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.pub-filter-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0;
  font-size: 0.85rem;
  color: var(--off-white);
  cursor: pointer;
}
.pub-filter-option input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--duration) var(--ease);
}
.pub-filter-option input[type="checkbox"]:checked {
  background: var(--purple);
  border-color: var(--purple);
}
.pub-filter-option input[type="checkbox"]:checked::after {
  content: '✓';
  display: block;
  text-align: center;
  font-size: 11px;
  line-height: 16px;
  color: var(--white);
}
.pub-empty-state {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
}
@media (max-width: 768px) {
  .pub-layout {
    grid-template-columns: 1fr;
  }
  .pub-filter-panel {
    position: static;
  }
}

/* ─── Project Updates ─── */
.updates-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-xl);
  align-items: start;
}
.updates-clear-btn {
  display: block;
  margin-top: var(--space-md);
  padding: 0.4rem 0.8rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  width: 100%;
  text-align: center;
}
.updates-clear-btn:hover {
  color: var(--white);
  border-color: var(--border-accent);
}
.updates-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}
.update-card {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: var(--space-xl);
  align-items: start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--purple);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-decoration: none;
  color: inherit;
  transition: all var(--duration) var(--ease);
}
.update-card:hover {
  border-color: var(--border-accent);
  border-left-color: var(--purple-bright);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(168,85,247,0.08);
}
.update-card-image {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, rgba(168,85,247,0.06), var(--bg-surface));
  border: 1px solid var(--border);
}
.update-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.update-img-fallback {
  display: flex !important;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.75rem;
  font-family: var(--font-display);
}
.update-img-fallback::after {
  content: 'Image placeholder';
}
.update-img-fallback img { display: none !important; }
.update-card-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.update-tag {
  background: var(--purple-glow, rgba(168,85,247,0.1));
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-pill);
  padding: 0.25rem 0.7rem;
  font-size: 0.7rem;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--purple-bright);
}
.updates-empty {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
}
@media (max-width: 768px) {
  .updates-layout { grid-template-columns: 1fr; }
  .update-card { grid-template-columns: 1fr; }
  .update-card-image { max-width: 300px; }
}

/* ─── Post Page ─── */
.post-content {
  max-width: 720px;
  margin: 0 auto;
}
.post-block {
  margin-bottom: var(--space-xl);
}
.post-block p + p {
  margin-top: 1.5rem;
  text-indent: 2rem;
}
.post-block-highlight {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}
.post-block-accent {
  background: linear-gradient(135deg, rgba(168,85,247,0.05), var(--bg-card));
  border: 1px solid rgba(168,85,247,0.15);
  border-left: 3px solid var(--purple-bright);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}
.post-image-block {
  margin-bottom: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(168,85,247,0.04), var(--bg-surface));
  overflow: hidden;
}
.post-image-block img {
  width: 100%;
  display: block;
}
.post-img-fallback {
  display: flex !important;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.85rem;
  font-family: var(--font-display);
}
.post-img-fallback::after {
  content: 'Post image placeholder';
}
.post-img-fallback img { display: none !important; }
.post-image-caption {
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  font-family: var(--font-display);
  color: var(--muted);
  text-align: center;
  letter-spacing: 0.02em;
  line-height: 1.5;
}
.post-milestone-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.post-milestone-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.6rem 0.8rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--off-white);
  line-height: 1.5;
}
.post-milestone-check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(168,85,247,0.15);
  border: 1px solid rgba(168,85,247,0.3);
  color: var(--purple-bright);
  font-size: 0.65rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

/* ─── Capabilities Page ─── */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.cap-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--duration) var(--ease);
  position: relative;
  overflow: hidden;
}
.cap-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-primary);
  opacity: 0;
  transition: opacity var(--duration) var(--ease);
}
.cap-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(168,85,247,0.08);
}
.cap-card:hover::before { opacity: 1; }
.cap-card-highlight {
  border-color: rgba(168,85,247,0.25);
  background: linear-gradient(135deg, rgba(168,85,247,0.06), var(--bg-card));
}
.cap-card-highlight::before { opacity: 1; }
.cap-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background: rgba(168,85,247,0.1);
  border: 1px solid rgba(168,85,247,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--purple-bright);
}
.cap-card-icon svg {
  width: 24px;
  height: 24px;
}
.cap-card-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}
.cap-card-desc {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.7;
}
.cap-early-access {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-xl);
  align-items: center;
}
.cap-ea-visual {
  position: relative;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cap-ea-ring {
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1px solid rgba(168,85,247,0.2);
  animation: capRingSpin 20s linear infinite;
}
.cap-ea-ring-2 {
  width: 140px;
  height: 140px;
  border-color: rgba(34,211,238,0.15);
  animation-direction: reverse;
  animation-duration: 15s;
}
.cap-ea-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--purple-bright);
  box-shadow: 0 0 20px rgba(168,85,247,0.5), 0 0 60px rgba(168,85,247,0.2);
  animation: pulse 2s ease infinite;
}
@keyframes capRingSpin {
  to { transform: rotate(360deg); }
}
@media (max-width: 1024px) {
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .cap-grid { grid-template-columns: 1fr; }
  .cap-early-access { grid-template-columns: 1fr; }
  .cap-ea-visual { height: 160px; }
}

/* ─── Hardware Page — Section-unique visuals ─── */
.hw-hero {
  position: relative;
  padding: 8rem 0 5rem;
  overflow: hidden;
}
.hw-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(168,85,247,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168,85,247,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
}
.hw-hero-glow {
  position: absolute;
  width: 600px; height: 600px;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(168,85,247,0.12) 0%, transparent 65%);
  pointer-events: none;
}
.hw-accent-banner {
  background: linear-gradient(90deg, var(--purple-bright), #22d3ee, var(--purple-bright));
  background-size: 200% 100%;
  animation: bannerShift 8s ease infinite;
  padding: 1rem 0;
  text-align: center;
}
.hw-banner-text {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bg-deep);
}
@keyframes bannerShift {
  0%,100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* Section 3 — Signal Gen: centered card with glow border */
.hw-sec { padding: var(--space-3xl) 0; }
.hw-sec-signal { background: var(--bg-deep); }
.hw-signal-card {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  padding: 3px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--purple-bright), #22d3ee, var(--purple-bright));
  background-size: 300% 300%;
  animation: glowBorder 6s ease infinite;
}
@keyframes glowBorder {
  0%,100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.hw-signal-card-glow {
  position: absolute;
  inset: -40px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(168,85,247,0.08), transparent 60%);
  pointer-events: none;
}
.hw-signal-inner {
  background: var(--bg-card);
  border-radius: calc(var(--radius-lg) - 2px);
  padding: var(--space-2xl);
  text-align: center;
  position: relative;
  z-index: 1;
}
.hw-signal-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--purple-bright);
  background: rgba(168,85,247,0.1);
  border: 1px solid rgba(168,85,247,0.2);
  border-radius: 100px;
  padding: 0.35rem 1rem;
  margin-bottom: var(--space-lg);
}
.hw-signal-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}
.hw-signal-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--purple-bright);
}
.hw-signal-stat svg { width: 28px; height: 28px; }
.hw-signal-stat span {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* Section 4 — Frequency Control: dark BG + rings */
.hw-sec-freq {
  position: relative;
  overflow: hidden;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.hw-freq-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 80% at 80% 50%, rgba(34,211,238,0.04), transparent);
}
.hw-freq-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-2xl);
  align-items: center;
  position: relative;
}
.hw-freq-accent {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--purple-bright), #22d3ee);
  border-radius: 3px;
}
.hw-freq-content { padding-left: var(--space-lg); }
.hw-freq-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hw-freq-rings {
  position: relative;
  width: 220px; height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hw-freq-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(168,85,247,0.15);
  animation: capRingSpin 20s linear infinite;
}
.hw-freq-ring-1 { width: 180px; height: 180px; }
.hw-freq-ring-2 { width: 120px; height: 120px; animation-direction: reverse; animation-duration: 14s; border-color: rgba(34,211,238,0.12); }
.hw-freq-ring-3 { width: 60px; height: 60px; animation-duration: 8s; border-color: rgba(168,85,247,0.2); }
.hw-freq-core {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--purple-bright);
  box-shadow: 0 0 20px rgba(168,85,247,0.4), 0 0 60px rgba(168,85,247,0.15);
  animation: pulse 2.5s ease infinite;
}

/* Section 5 — Electro-Optic: horizontal chip strip */
.hw-sec-eo {
  background: linear-gradient(180deg, var(--bg-deep) 0%, rgba(168,85,247,0.03) 50%, var(--bg-deep) 100%);
}
.hw-eo-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}
.hw-eo-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: var(--space-lg);
}
.hw-eo-chip-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--purple-bright);
  transition: all var(--duration) var(--ease);
}
.hw-eo-chip:hover .hw-eo-chip-icon {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(168,85,247,0.12);
}
.hw-eo-chip-icon svg { width: 26px; height: 26px; }
.hw-eo-chip span {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.hw-eo-connector {
  width: 48px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
}

/* Section 6 — Optomechanics: glass card + animated dial */
.hw-sec-opto {
  position: relative;
  overflow: hidden;
}
.hw-opto-mesh {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(168,85,247,0.06), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(34,211,238,0.04), transparent 40%);
}
.hw-opto-glass {
  max-width: 860px;
  margin: 0 auto;
}
.hw-opto-glass-inner {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: var(--space-xl);
  align-items: center;
  background: rgba(15,15,30,0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(168,85,247,0.15);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
}
.hw-opto-dial {
  position: relative;
  width: 180px; height: 180px;
  margin: 0 auto;
}
.hw-opto-dial-ring {
  position: absolute;
  inset: 0;
  border: 2px solid rgba(168,85,247,0.2);
  border-radius: 50%;
}
.hw-opto-dial-tick {
  position: absolute;
  width: 2px; height: 14px;
  background: rgba(168,85,247,0.3);
  left: 50%;
  transform-origin: 50% 90px;
}
.hw-opto-tick-1 { transform: translateX(-50%) rotate(0deg); top: 0; }
.hw-opto-tick-2 { transform: translateX(-50%) rotate(90deg); top: 0; }
.hw-opto-tick-3 { transform: translateX(-50%) rotate(180deg); top: 0; }
.hw-opto-tick-4 { transform: translateX(-50%) rotate(270deg); top: 0; }
.hw-opto-dial-needle {
  position: absolute;
  width: 2px; height: 70px;
  background: linear-gradient(180deg, var(--purple-bright), transparent);
  left: 50%; top: 20px;
  transform-origin: 50% 70px;
  transform: translateX(-50%) rotate(0deg);
  animation: needleSweep 4s ease-in-out infinite;
}
@keyframes needleSweep {
  0%,100% { transform: translateX(-50%) rotate(-45deg); }
  50% { transform: translateX(-50%) rotate(45deg); }
}

/* Section 7 — POSMq callout band */
.hw-sec-posmq-cta { background: var(--bg-surface); border-top: 1px solid var(--border); }
.hw-posmq-band {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.hw-posmq-band-glow {
  position: absolute;
  width: 300px; height: 300px;
  right: -100px; top: -100px;
  background: radial-gradient(circle, rgba(168,85,247,0.1), transparent 60%);
  pointer-events: none;
}
.hw-posmq-band-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  padding: var(--space-xl) var(--space-2xl);
  position: relative;
  z-index: 1;
}

@media (max-width: 768px) {
  .hw-hero { padding: 6rem 0 3rem; }
  .hw-signal-stats { flex-direction: column; gap: var(--space-md); }
  .hw-freq-layout { grid-template-columns: 1fr; }
  .hw-freq-visual { margin-top: var(--space-lg); }
  .hw-freq-accent { display: none; }
  .hw-eo-connector { width: 1px; height: 24px; }
  .hw-eo-strip { flex-direction: column; }
  .hw-opto-glass-inner { grid-template-columns: 1fr; }
  .hw-opto-dial { width: 140px; height: 140px; }
  .hw-opto-dial-tick { transform-origin: 50% 70px; }
  .hw-opto-dial-needle { height: 50px; transform-origin: 50% 50px; }
  .hw-posmq-band-content { flex-direction: column; text-align: center; }
}

/* ─── POSMq Page — Section-unique visuals ─── */
.pq-hero {
  position: relative;
  padding: 8rem 0 5rem;
  overflow: hidden;
}
.pq-hero-orb {
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(168,85,247,0.15), transparent 60%);
  top: -80px; right: 10%;
  animation: orbFloat 10s ease-in-out infinite;
  pointer-events: none;
}
.pq-hero-orb-2 {
  width: 250px; height: 250px;
  background: radial-gradient(circle, rgba(34,211,238,0.08), transparent 60%);
  top: auto; bottom: -60px; right: auto; left: 10%;
  animation-delay: -5s;
  animation-duration: 12s;
}
@keyframes orbFloat {
  0%,100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

/* POSMq feature strip */
.pq-strip {
  position: relative;
  padding: 1.25rem 0;
  text-align: center;
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
}
.pq-strip-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(168,85,247,0.06), rgba(34,211,238,0.04), transparent);
}
.pq-strip-text {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--off-white);
  letter-spacing: 0.03em;
}

/* POSMq pillar grid — asymmetric */
.pq-sec { padding: var(--space-3xl) 0; }
.pq-sec-pillars { background: var(--bg-deep); }
.pq-pillar-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 1.5rem;
}
.pq-pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--duration) var(--ease);
}
.pq-pillar-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}
.pq-pillar-tall { grid-row: 1 / 3; }
.pq-pillar-wide { grid-column: 2 / 3; }
.pq-pillar-compact { grid-column: 2 / 3; }
.pq-pillar-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: var(--space-md);
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.15;
}
.pq-pillar-deco {
  margin-top: var(--space-lg);
  display: flex;
  justify-content: center;
  color: var(--purple-bright);
}
.pq-pillar-deco svg { width: 100px; }
.pq-pillar-deco-wide svg { width: 100%; max-width: 280px; }

/* POSMq workflow — pipeline */
.pq-sec-workflow {
  position: relative;
  overflow: hidden;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.pq-wf-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 40% 60% at 20% 50%, rgba(168,85,247,0.04), transparent),
    radial-gradient(ellipse 40% 60% at 80% 50%, rgba(34,211,238,0.03), transparent);
}
.pq-pipeline {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: var(--space-2xl);
  position: relative;
  padding-top: var(--space-lg);
}
.pq-pipeline-track {
  position: absolute;
  top: calc(var(--space-lg) + 28px);
  left: 15%; right: 15%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--border-accent), rgba(34,211,238,0.3), var(--border-accent), transparent);
}
.pq-pipe-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
}
.pq-pipe-node {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  transition: all var(--duration) var(--ease);
}
.pq-pipe-node-accent {
  border-color: rgba(168,85,247,0.4);
  color: var(--purple-bright);
  box-shadow: 0 0 16px rgba(168,85,247,0.1);
}
.pq-pipe-step:hover .pq-pipe-node {
  border-color: var(--purple-bright);
  color: var(--purple-bright);
  transform: scale(1.1);
  box-shadow: 0 0 24px rgba(168,85,247,0.2);
}
.pq-pipe-node svg { width: 22px; height: 22px; }
.pq-pipe-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--off-white);
  letter-spacing: 0.03em;
}
.pq-pipe-desc {
  font-size: 0.72rem;
  color: var(--muted);
  text-align: center;
  max-width: 120px;
  line-height: 1.4;
}

/* POSMq Early Access — glass panel with arcs */
.pq-sec-ea { background: var(--bg-deep); }
.pq-ea-panel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: rgba(15,15,30,0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(168,85,247,0.12);
}
.pq-ea-panel-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 100% 100%, rgba(168,85,247,0.06), transparent 50%),
    radial-gradient(ellipse 40% 50% at 0% 0%, rgba(34,211,238,0.04), transparent 50%);
}
.pq-ea-panel-content {
  position: relative;
  z-index: 1;
  padding: var(--space-2xl);
}
.pq-ea-decoration {
  position: absolute;
  right: var(--space-xl);
  top: 50%;
  transform: translateY(-50%);
  width: 200px; height: 200px;
}
.pq-ea-arc {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(168,85,247,0.1);
}
.pq-ea-arc-1 { width: 200px; height: 200px; top: 0; left: 0; }
.pq-ea-arc-2 { width: 140px; height: 140px; top: 30px; left: 30px; border-color: rgba(34,211,238,0.08); }
.pq-ea-arc-3 { width: 80px; height: 80px; top: 60px; left: 60px; border-color: rgba(168,85,247,0.15); }

@media (max-width: 768px) {
  .pq-hero { padding: 6rem 0 3rem; }
  .pq-pillar-grid { grid-template-columns: 1fr; }
  .pq-pillar-tall { grid-row: auto; }
  .pq-pillar-wide { grid-column: auto; }
  .pq-pillar-compact { grid-column: auto; }
  .pq-pipeline { flex-direction: column; align-items: center; gap: var(--space-lg); }
  .pq-pipeline-track { display: none; }
  .pq-ea-decoration { display: none; }
}


/* ─── Contact Form ─── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}
.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-display);
  color: var(--muted);
  letter-spacing: 0.06em;
}
.form-input, .form-textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  color: var(--white);
  font-size: 0.9rem;
  font-family: var(--font-body);
  transition: border-color var(--duration) var(--ease);
  width: 100%;
}
.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--border-accent);
}
.form-input::placeholder, .form-textarea::placeholder { color: rgba(232,232,240,0.3); }
.form-textarea { min-height: 140px; resize: vertical; }

/* Select dropdown fix — force browser-native dark dropdown */
select.form-input {
  color-scheme: dark;
}

/* Contact form success toast */
.form-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  background: linear-gradient(135deg, #1a0a2e, #0d1a2e);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 1rem 2rem;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  z-index: 9999;
  opacity: 0;
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.4s ease;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 40px rgba(168,85,247,0.15);
  text-align: center;
  max-width: 90vw;
}
.form-toast.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Map placeholder */
.map-placeholder {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  color: var(--muted);
}

/* ─── Outreach ─── */
.outreach-pillars {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}
.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--duration) var(--ease);
}
.pillar-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}
.pillar-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

/* ─── Scroll animations ─── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.reveal-stagger.visible > * { opacity: 1; transform: none; }
.reveal-stagger.visible > *:nth-child(1)  { transition-delay: 0s; }
.reveal-stagger.visible > *:nth-child(2)  { transition-delay: 0.07s; }
.reveal-stagger.visible > *:nth-child(3)  { transition-delay: 0.14s; }
.reveal-stagger.visible > *:nth-child(4)  { transition-delay: 0.21s; }
.reveal-stagger.visible > *:nth-child(5)  { transition-delay: 0.28s; }
.reveal-stagger.visible > *:nth-child(6)  { transition-delay: 0.35s; }
.reveal-stagger.visible > *:nth-child(7)  { transition-delay: 0.42s; }
.reveal-stagger.visible > *:nth-child(8)  { transition-delay: 0.49s; }
.reveal-stagger.visible > *:nth-child(9)  { transition-delay: 0.56s; }
.reveal-stagger.visible > *:nth-child(10) { transition-delay: 0.63s; }
.reveal-stagger.visible > *:nth-child(11) { transition-delay: 0.70s; }
.reveal-stagger.visible > *:nth-child(12) { transition-delay: 0.77s; }
.reveal-stagger.visible > *:nth-child(13) { transition-delay: 0.84s; }
.reveal-stagger.visible > *:nth-child(14) { transition-delay: 0.91s; }

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: 1fr; gap: var(--space-xl); }
  .feature-grid.reverse { direction: ltr; }
  .tab-panel.active { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .research-page-layout { grid-template-columns: 220px 1fr; gap: 2rem; }
}
@media (max-width: 768px) {
  :root {
    --space-3xl: 5rem;
    --space-2xl: 3.5rem;
  }
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .research-landing-grid { grid-template-columns: 1fr; }
  .research-page-layout { grid-template-columns: 1fr; }
  .research-sidebar { position: static; }
  .advisor-card { grid-template-columns: 1fr; text-align: center; }
  .advisor-avatar { margin: 0 auto; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
}

/* ─── Utilities ─── */
.mb-xs  { margin-bottom: var(--space-xs); }
.mb-sm  { margin-bottom: var(--space-sm); }
.mb-md  { margin-bottom: var(--space-md); }
.mb-lg  { margin-bottom: var(--space-lg); }
.mb-xl  { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mt-sm  { margin-top: var(--space-sm); }
.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }
.mt-xl  { margin-top: var(--space-xl); }
.text-center { text-align: center; }
.w-full { width: 100%; }

/* ─── Sponsor page specific ─── */
.needs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}
.need-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  transition: border-color var(--duration) var(--ease);
}
.need-item:hover { border-color: var(--border-accent); }
.need-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--purple);
  flex-shrink: 0;
  margin-top: 0.35rem;
}
.ways-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
.way-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--duration) var(--ease);
}
.way-card:hover { border-color: var(--border-accent); transform: translateY(-2px); }
.way-card-icon {
  font-size: 1.75rem;
  margin-bottom: var(--space-sm);
}

/* Active nav link */
.nav-link[data-active="true"] { color: var(--white); }

/* ─── Member Profile Pages ─── */
.profile-hero {
  display: flex;
  flex-direction: row-reverse;
  align-items: center;
  gap: clamp(3rem, 6vw, 5rem);
  padding-top: var(--space-lg);
  min-height: 55vh;
}
.profile-photo-wrap {
  flex-shrink: 0;
  width: 340px;
  aspect-ratio: 3/4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-accent);
  box-shadow: 0 0 80px rgba(168,85,247,0.2), 0 0 160px rgba(168,85,247,0.07);
  background: linear-gradient(135deg,#1a0a2e,#0a1030);
  position: relative;
}
.profile-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}
.profile-photo-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 700;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.35;
}
.profile-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  min-width: 0;
}
.profile-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.profile-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--off-white);
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: all var(--duration) var(--ease);
  text-decoration: none;
}
.profile-link-btn:hover {
  border-color: var(--border-accent);
  background: var(--purple-glow);
  color: var(--white);
  transform: translateY(-1px);
}
.profile-bio {
  max-width: 680px;
}
.profile-bio-section {
  padding-block: var(--space-lg) var(--space-2xl);
  border-top: 1px solid var(--border);
}

@media (max-width: 500px) {
  .profile-hero {
    flex-direction: column;
    min-height: unset;
  }
  .profile-photo-wrap {
    width: 200px;
    aspect-ratio: 1;
    border-radius: 50%;
  }
}