*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --dark:        #0a0f1a;
  --dark-mid:    #111827;
  --charcoal:    #1c2333;
  --accent:      #2dd4bf;
  --accent-dim:  #1a9e8e;
  --accent-glow: rgba(45,212,191,0.12);
  --bg:          #ffffff;
  --bg-off:      #f6f7f9;
  --bg-card:     #ffffff;
  --border:      #e5e7eb;
  --border-mid:  #d1d5db;
  --text:        #0f1117;
  --text-mid:    #374151;
  --text-muted:  #6b7280;
  --serif: 'DM Serif Display', Georgia, serif;
  --sans:  'DM Sans', system-ui, sans-serif;
  --nav-h:    68px;
  --radius:   8px;
  --radius-lg:16px;
}

html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--sans); background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* NAV */
.nav { position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h); background: rgba(255,255,255,0.95); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); z-index: 100; transition: box-shadow 0.2s; }
.nav.scrolled { box-shadow: 0 2px 24px rgba(0,0,0,0.08); }
.nav-inner { max-width: 1160px; margin: 0 auto; padding: 0 2rem; height: 100%; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: var(--serif); font-size: 1.55rem; color: var(--dark); letter-spacing: -0.01em; }
.nav-logo span { color: var(--dark); }
.nav-links { display: flex; list-style: none; gap: 2rem; align-items: center; }
.nav-links a { font-size: 0.9rem; font-weight: 400; color: var(--text-mid); transition: color 0.18s; letter-spacing: 0.01em; }
.nav-links a:hover { color: var(--dark); }
.nav-links a.active { color: var(--dark); }
.nav-cta { background: var(--dark) !important; color: #fff !important; padding: 0.45rem 1.1rem; border-radius: 50px; font-weight: 500 !important; transition: background 0.18s !important; }
.nav-cta:hover { background: var(--charcoal) !important; }
.nav-hamburger { display: none; background: none; border: none; font-size: 1.4rem; cursor: pointer; color: var(--text); }

/* BUTTONS */
.btn { display: inline-flex; align-items: center; gap: 0.4rem; font-family: var(--sans); font-size: 0.92rem; font-weight: 500; padding: 0.7rem 1.6rem; border-radius: 50px; border: none; cursor: pointer; transition: all 0.18s; letter-spacing: 0.01em; text-decoration: none; }
.btn-primary { background: var(--dark); color: #fff; font-weight: 600; }
.btn-primary:hover { background: #374151; }
.btn-ghost { background: rgba(255,255,255,0.12); color: #fff; border: 1.5px solid rgba(255,255,255,0.4); }
.btn-ghost:hover { background: rgba(255,255,255,0.22); }
.btn-outline { background: transparent; color: var(--text); border: 1.5px solid var(--border-mid); }
.btn-outline:hover { border-color: var(--dark); color: var(--dark); }
.btn-white { background: #fff; color: var(--dark); font-weight: 600; }
.btn-white:hover { background: #f3f4f6; color: var(--dark); }

/* HERO */
.hero { min-height: 100vh; padding-top: var(--nav-h); display: flex; flex-direction: column; justify-content: center; background: linear-gradient(135deg, #1a1f2e 0%, #2d3348 100%); color: #fff; position: relative; overflow: hidden; }
.hero-bg-map { position: absolute; inset: 0; background-image: url('/images/hero-znz.jpg'); background-size: cover; background-position: 65% 50%; z-index: 0; opacity: 1.0; pointer-events: none; }
.hero-bg-pattern { position: absolute; inset: 0; background: linear-gradient(to right, rgba(10,15,26,0.92) 0%, rgba(10,15,26,0.72) 38%, rgba(10,15,26,0.22) 65%, rgba(10,15,26,0.0) 100%); pointer-events: none; z-index: 1; }
.hero-inner { max-width: 1160px; margin: 0 auto; padding: 5rem 2rem 3rem; position: relative; z-index: 2; }
.hero-tag { display: inline-block; background: rgba(255,255,255,0.10); border: 1px solid rgba(255,255,255,0.18); color: rgba(255,255,255,0.80); font-size: 0.75rem; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.35rem 0.9rem; border-radius: 50px; margin-bottom: 1.5rem; }
.hero-title { font-family: var(--serif); font-size: clamp(2.8rem, 6vw, 5rem); line-height: 1.1; letter-spacing: -0.02em; color: #fff; margin-bottom: 1.5rem; max-width: 680px; }
.hero-title em { font-style: italic; color: #ffffff; }
.hero-sub { font-size: 1.05rem; color: rgba(255,255,255,0.70); max-width: 520px; margin-bottom: 2.5rem; font-weight: 300; line-height: 1.8; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-stats { max-width: 1160px; margin: 0 auto; padding: 2.5rem 2rem; display: flex; align-items: center; position: relative; z-index: 2; border-top: 1px solid rgba(255,255,255,0.10); }
.stat { flex: 1; padding: 0 2rem; }
.stat:first-child { padding-left: 0; }
.stat-num { display: block; font-family: var(--serif); font-size: 1.4rem; color: #fff; line-height: 1.2; margin-bottom: 0.4rem; }
.stat-label { font-size: 0.88rem; color: rgba(255,255,255,0.75); font-weight: 300; letter-spacing: 0.01em; line-height: 1.5; }
.stat-divider { width: 1px; height: 50px; background: rgba(255,255,255,0.12); flex-shrink: 0; }

/* SHARED */
.container { max-width: 1160px; margin: 0 auto; padding: 0 2rem; }
.section-tag { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--dark); margin-bottom: 0.75rem; }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header h2 { font-family: var(--serif); font-size: clamp(1.9rem, 3.5vw, 2.8rem); color: var(--text); letter-spacing: -0.02em; }
.section-sub { color: var(--text-muted); font-size: 1rem; max-width: 520px; margin: 0.75rem auto 0; }

/* WHAT WE DO */
.what-we-do { padding: 6rem 0; background: var(--bg); }
.pillars-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.pillar { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 2rem 1.75rem; transition: transform 0.2s, box-shadow 0.2s; }
.pillar:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.08); }
.pillar-icon { width: 48px; height: 48px; background: var(--bg-off); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: var(--dark); margin-bottom: 1.25rem; }
.pillar h3 { font-family: var(--serif); font-size: 1.2rem; color: var(--text); margin-bottom: 0.7rem; letter-spacing: -0.01em; }
.pillar p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 1.2rem; }
.pillar-link { font-size: 0.85rem; font-weight: 500; color: var(--text-muted); text-decoration: underline; text-underline-offset: 3px; transition: color 0.15s; }
.pillar-link:hover { color: var(--dark); }

/* APPROACH */
.approach { padding: 6rem 0; background: var(--bg-off); }
.approach-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; }
.approach-text h2 { font-family: var(--serif); font-size: clamp(1.8rem, 3vw, 2.5rem); letter-spacing: -0.02em; margin-bottom: 1rem; color: var(--text); }
.approach-text p { color: var(--text-muted); font-size: 0.97rem; }
.approach-values { display: flex; flex-direction: column; gap: 1rem; }
.value-item { display: flex; gap: 1.25rem; padding: 1.25rem 1.5rem; background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border); }
.value-num { font-family: var(--serif); font-size: 1.4rem; color: var(--text-muted); opacity: 1.0; flex-shrink: 0; line-height: 1; margin-top: 2px; }
.value-item h4 { font-weight: 500; font-size: 0.95rem; margin-bottom: 0.2rem; color: var(--text); }
.value-item p { font-size: 0.85rem; color: var(--text-muted); }

/* TEAM PREVIEW */
.team-preview { padding: 6rem 0; background: var(--bg); }
.institution-logos { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.institution { background: var(--bg-card); border: 1px solid var(--border); border-radius: 50px; padding: 0.55rem 1.25rem; font-size: 0.83rem; font-weight: 500; color: var(--text-mid); }

/* FUNDERS */
.funders { padding: 4rem 0; background: var(--bg-off); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* CTA BANNER */
.cta-banner { background: linear-gradient(135deg, #1a1f2e 0%, #2d3348 100%); padding: 4.5rem 0; color: #fff; position: relative; overflow: hidden; }
.cta-banner::before { content: ''; position: absolute; inset: 0; background: none; pointer-events: none; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap; position: relative; z-index: 1; }
.cta-inner h2 { font-family: var(--serif); font-size: 2rem; margin-bottom: 0.5rem; letter-spacing: -0.02em; }
.cta-inner p { color: rgba(255,255,255,0.55); font-size: 0.97rem; }

/* FOOTER */
.footer { background: linear-gradient(135deg, #12151f 0%, #1e2235 100%); color: rgba(255,255,255,0.5); padding: 3rem 0; }
.footer-inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 2rem; text-align: center; }
.footer-brand .nav-logo { display: block; margin-bottom: 0.5rem; color: #fff; }
.footer-brand .nav-logo span { color: #ffffff; }
.footer-brand p { font-size: 0.82rem; color: rgba(255,255,255,0.30); }
.footer-nav { display: flex; gap: 1.5rem; flex-wrap: wrap; justify-content: center; }
.footer-nav a { font-size: 0.85rem; color: rgba(255,255,255,0.40); transition: color 0.18s; }
.footer-nav a:hover { color: #fff; }
.footer-copy { font-size: 0.78rem; color: rgba(255,255,255,0.22); text-align: right; }

/* INNER PAGE HEROES */
.page-hero { padding: calc(var(--nav-h) + 4rem) 0 4rem; background: linear-gradient(135deg, #1a1f2e 0%, #2d3348 100%); color: #fff; text-align: center; position: relative; overflow: hidden; }
.page-hero::before { content: ''; position: absolute; inset: 0; background: none; pointer-events: none; }
.page-hero h1 { font-family: var(--serif); font-size: clamp(2.4rem, 5vw, 3.8rem); letter-spacing: -0.025em; margin-bottom: 1rem; position: relative; }
.page-hero p { font-size: 1.2 rem; font-weight: 500; color: rgba(255,255,255,0.90);max-width: 580px; margin: 0 auto; position: relative; 
}.page-content { padding: 5rem 0 6rem; }

/* ABOUT PAGE */
.about-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 5rem; align-items: start; }
.about-body h2 { font-family: var(--serif); font-size: 1.75rem; letter-spacing: -0.02em; margin: 2.5rem 0 0.75rem; color: var(--text); }
.about-body h2:first-child { margin-top: 0; }
.about-body p { color: var(--text-mid); font-size: 0.97rem; line-height: 1.8; margin-bottom: 0.75rem; }
.about-body a { color: var(--dark); text-decoration: underline; text-underline-offset: 3px; }
.about-sidebar { position: sticky; top: calc(var(--nav-h) + 2rem); }
.sidebar-card { background: var(--bg-off); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.5rem; margin-bottom: 1rem; }
.sidebar-card h4 { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--dark); margin-bottom: 0.6rem; }
.sidebar-card p { font-size: 0.87rem; color: var(--text-mid); line-height: 1.65; }

/* RESEARCH */
.research-cards { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
.research-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 2.5rem; display: grid; grid-template-columns: auto 1fr; gap: 2rem; align-items: start; transition: box-shadow 0.2s, border-color 0.2s; }
.research-card:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.07); border-color: var(--border-mid); }
.research-card-num { font-family: var(--serif); font-size: 3.5rem; color: #e5e7eb; line-height: 1; font-style: italic; }
.research-card h3 { font-family: var(--serif); font-size: 1.5rem; letter-spacing: -0.01em; margin-bottom: 0.75rem; color: var(--text); }
.research-card p { font-size: 0.93rem; color: var(--text-muted); line-height: 1.75; }

/* PUBLICATIONS */
.pub-section { margin-bottom: 3.5rem; }
.pub-section-title { font-family: var(--serif); font-size: 1.35rem; color: var(--text); margin-bottom: 1.25rem; padding-bottom: 0.75rem; border-bottom: 2px solid var(--border); }
.pub-item { padding: 1.25rem 0; border-bottom: 1px solid var(--border); }
.pub-item:last-child { border-bottom: none; }
.pub-item h4 { font-size: 0.97rem; font-weight: 500; margin-bottom: 0.35rem; }
.pub-item h4 a { color: var(--dark); transition: color 0.15s; }
.pub-item h4 a:hover { color: var(--text-mid); text-decoration: underline; text-underline-offset: 3px; }
.pub-meta { font-size: 0.82rem; color: var(--text-muted); }
.pub-doi { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.25rem; }
.pub-doi a { color: var(--dark); }

/* TEAM */
.team-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.team-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; transition: box-shadow 0.2s; }
.team-card:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.07); }
.team-card[open] { border-color: var(--dark); }
.team-summary { display: flex; align-items: center; gap: 1.25rem; padding: 1.5rem; cursor: pointer; list-style: none; user-select: none; }
.team-summary::-webkit-details-marker { display: none; }
.team-summary::marker { display: none; }
.team-avatar { width: 72px; height: 72px; border-radius: 50%; object-fit: cover; flex-shrink: 0; border: 2px solid var(--border); }
.team-header { display: flex; align-items: center; justify-content: space-between; flex: 1; gap: 1rem; }
.team-header h3 { font-family: var(--serif); font-size: 1.1rem; color: var(--text); margin-bottom: 0.15rem; }
.team-header .role { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.04em; color: var(--text-muted); margin-bottom: 0.1rem; }
.team-header .inst { font-size: 0.75rem; color: var(--text-muted); }
.toggle { width: 28px; height: 28px; border-radius: 50%; background: var(--bg-off); flex-shrink: 0; display: flex; align-items: center; justify-content: center; transition: background 0.18s, transform 0.25s; position: relative; }
.toggle::before, .toggle::after { content: ''; position: absolute; width: 7px; height: 1.5px; background: var(--text-muted); border-radius: 2px; transition: transform 0.25s, background 0.18s; }
.toggle::before { transform: translateX(-2.5px) rotate(45deg); }
.toggle::after  { transform: translateX(2.5px) rotate(-45deg); }
.team-card[open] .toggle { background: var(--dark); transform: rotate(180deg); }
.team-card[open] .toggle::before, .team-card[open] .toggle::after { background: #fff; }
.team-bio { padding: 0 1.5rem 1.5rem; border-top: 1px solid var(--border); padding-top: 1.25rem; }
.team-bio p { font-size: 0.88rem; color: var(--text-mid); line-height: 1.75; margin-bottom: 0.75rem; }
.team-bio p:last-child { margin-bottom: 0; }

/* CONTACT */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.contact-info h2 { font-family: var(--serif); font-size: 1.75rem; margin-bottom: 1rem; letter-spacing: -0.02em; }
.contact-info p { font-size: 0.97rem; color: var(--text-mid); margin-bottom: 1.5rem; line-height: 1.75; }
.contact-form { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 2rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: 0.82rem; font-weight: 500; color: var(--text-mid); margin-bottom: 0.4rem; letter-spacing: 0.01em; }
.form-group input, .form-group textarea { width: 100%; padding: 0.7rem 0.9rem; border: 1px solid var(--border); border-radius: var(--radius); font-family: var(--sans); font-size: 0.9rem; background: var(--bg); color: var(--text); transition: border-color 0.18s, box-shadow 0.18s; outline: none; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--dark); box-shadow: 0 0 0 3px rgba(45,212,191,0.12); }
.form-group textarea { resize: vertical; min-height: 120px; }
.honeypot { display: none; }

/* RICH TEXT */
.rich-text h2 { font-family: var(--serif); font-size: 1.7rem; letter-spacing: -0.02em; margin: 2.5rem 0 0.75rem; color: var(--text); }
.rich-text p { color: var(--text-mid); font-size: 0.97rem; line-height: 1.8; margin-bottom: 0.75rem; }
.rich-text strong { color: var(--text); font-weight: 500; }
.rich-text a { color: var(--dark); text-decoration: underline; text-underline-offset: 3px; }

/* RESPONSIVE */
@media (max-width: 900px) {
  .pillars-grid { grid-template-columns: 1fr; }
  .approach-inner { grid-template-columns: 1fr; gap: 3rem; }
  .about-grid { grid-template-columns: 1fr; }
  .about-sidebar { position: static; }
  .team-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-copy { text-align: center; }
  .research-card { grid-template-columns: 1fr; }
  .research-card-num { font-size: 2.5rem; }
}
@media (max-width: 680px) {
  .nav-links { display: none; }
  .nav-links.open { display: flex; flex-direction: column; position: fixed; top: var(--nav-h); left: 0; right: 0; bottom: 0; min-height: 100vh; background-color: #0a0f1a; background-image: url('/images/hero-znz.jpg'); background-size: cover; background-position: 20% center; background-attachment: scroll; padding: 2rem; gap: 1.5rem; z-index: 99; }
  .nav-links.open a { font-size: 1.2rem; font-weight: 800; color: #1c2333; }
  .nav-hamburger { display: block; }
  .hero-stats { flex-direction: column; gap: 1.5rem; }
  .stat-divider { width: 50px; height: 1px; }
  .stat { padding: 0; }
  .cta-inner { flex-direction: column; text-align: center; }
  .hero-actions { flex-direction: column; width: fit-content; }
}