:root {
  --navy: #0B1F33;
  --navy-2: #12304C;
  --teal: #1F6E86;
  --teal-light: #3FA7C2;
  --ink: #14232B;
  --ink-soft: #46555F;
  --rule: #DCE4E9;
  --paper: #FFFFFF;
  --tint: #F3F6F8;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --wrap: 1120px;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--sans); font-size: 17px; line-height: 1.65; color: var(--ink); background: var(--paper); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--teal); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--teal-light); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--serif); color: var(--navy); font-weight: 600; line-height: 1.18; margin: 0; }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.5rem); letter-spacing: -0.01em; }
h3 { font-size: 1.3rem; }
p { margin: 0 0 1rem; }

.skip { position: absolute; left: -999px; top: 0; background: var(--navy); color: #fff; padding: 10px 16px; z-index: 50; }
.skip:focus { left: 12px; top: 12px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,0.92); backdrop-filter: saturate(160%) blur(10px); border-bottom: 1px solid var(--rule); }
.header-row { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { font-family: var(--serif); font-weight: 600; font-size: 1.2rem; color: var(--navy); text-decoration: none; }
.nav { display: flex; gap: 28px; align-items: center; }
.nav a { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; font-weight: 500; }
.nav a:hover { color: var(--navy); }
.nav .nav-cta { color: #fff; background: var(--navy); padding: 9px 18px; border-radius: 999px; }
.nav .nav-cta:hover { background: var(--teal); color: #fff; }
.menu-btn { display: none; font: 500 0.95rem var(--sans); background: none; border: 1px solid var(--rule); border-radius: 999px; padding: 8px 16px; color: var(--navy); cursor: pointer; }

/* Hero */
.hero { padding: 72px 0 88px; background: linear-gradient(180deg, #F6F9FB 0%, #FFFFFF 100%); }
.hero-grid { display: grid; grid-template-columns: 1.25fr 0.85fr; gap: 64px; align-items: center; }
.eyebrow { font-size: 0.8rem; font-weight: 600; color: var(--teal); text-transform: none; letter-spacing: 0.02em; margin-bottom: 14px; }
.hero h1 { font-size: clamp(2.6rem, 6vw, 4.4rem); letter-spacing: -0.02em; }
.hero h1 .ar { display: block; text-align: left; font-family: var(--sans); font-size: 0.42em; font-weight: 500; color: var(--ink-soft); margin-top: 12px; letter-spacing: 0; }
.lede { font-size: 1.2rem; color: var(--ink-soft); max-width: 36em; margin: 24px 0 32px; }
.actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.btn { display: inline-block; text-decoration: none; font-weight: 600; font-size: 0.97rem; padding: 13px 24px; border-radius: 999px; transition: background 0.2s, color 0.2s, border-color 0.2s; }
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--teal); }
.btn-ghost { border: 1.5px solid var(--navy); color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: #fff; }
.facts { list-style: none; padding: 24px 0 0; margin: 0; display: flex; gap: 40px; flex-wrap: wrap; border-top: 1px solid var(--rule); }
.facts li { font-weight: 500; color: var(--navy); font-size: 0.97rem; }
.facts span { display: block; font-size: 0.78rem; color: var(--ink-soft); font-weight: 500; margin-bottom: 2px; }
.facts a { color: var(--navy); }
.hero-photo { margin: 0; }
.hero-photo img { border-radius: 22px; width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: center 20%; background: var(--tint); }

/* Sections */
.section { padding: 96px 0; }
.section--tint { background: var(--tint); }
.section-head { max-width: 46em; margin-bottom: 48px; }
.section-intro { color: var(--ink-soft); font-size: 1.08rem; margin-top: 16px; }

/* Ventures */
.venture { display: grid; grid-template-columns: 120px 1fr; gap: 36px; padding: 40px 0; border-top: 1px solid var(--rule); }
.venture:last-child { border-bottom: 1px solid var(--rule); }
.venture-logo { width: 96px; height: 96px; border-radius: 20px; background: var(--tint); display: grid; place-items: center; overflow: hidden; }
.venture-logo img { width: 72%; height: auto; }
.venture-logo--light img { width: 86%; }
.venture-logo--text { font-family: var(--serif); font-weight: 600; color: var(--teal); font-size: 0.95rem; }
.venture-meta { font-size: 0.85rem; color: var(--ink-soft); font-weight: 500; margin-bottom: 6px; }
.venture-body h3 { margin-bottom: 12px; font-size: 1.55rem; }
.venture-body p { color: var(--ink-soft); max-width: 44em; }
.link { font-weight: 600; text-decoration: none; border-bottom: 1.5px solid currentColor; padding-bottom: 1px; }
.link:hover { color: var(--navy); }

/* Research */
.pubs { list-style: none; margin: 0 0 32px; padding: 0; display: grid; gap: 20px; }
.pub { background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius); padding: 28px 32px; }
.pub-type { font-size: 0.82rem; font-weight: 600; color: var(--teal); margin-bottom: 10px; }
.pub h3 { font-size: 1.22rem; line-height: 1.35; margin-bottom: 10px; }
.pub-meta { color: var(--ink-soft); font-size: 0.95rem; margin: 0; }

/* Talks */
.talks { list-style: none; margin: 0; padding: 0; }
.talk { display: grid; grid-template-columns: 170px 1fr; gap: 32px; padding: 28px 0; border-top: 1px solid var(--rule); }
.talk:last-child { border-bottom: 1px solid var(--rule); }
.talk-date { font-weight: 600; color: var(--navy); font-size: 0.95rem; }
.talk h3 { font-size: 1.22rem; margin-bottom: 6px; }
.talk p { color: var(--ink-soft); margin: 0; }

/* Background */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.two-col h2 { margin-bottom: 20px; }
.two-col p { color: var(--ink-soft); }
.cv { margin: 0; display: grid; gap: 0; }
.cv div { padding: 20px 0; border-top: 1px solid var(--rule); }
.cv div:last-child { border-bottom: 1px solid var(--rule); }
.cv dt { font-family: var(--serif); font-weight: 600; color: var(--navy); font-size: 1.12rem; }
.cv dd { margin: 4px 0 0; color: var(--ink-soft); }

/* Contact */
.contact { background: var(--navy); }
.contact h2, .contact .eyebrow { color: #fff; }
.contact .eyebrow { color: var(--teal-light); }
.contact .section-intro { color: #B9C8D4; }
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 36px; }
.contact-card { display: block; text-decoration: none; color: #fff; font-weight: 600; padding: 22px 22px; border: 1px solid rgba(255,255,255,0.18); border-radius: var(--radius); transition: background 0.2s, border-color 0.2s; word-break: break-word; }
.contact-card span { display: block; font-size: 0.8rem; font-weight: 500; color: #9FB6C7; margin-bottom: 6px; }
.contact-card:hover { background: rgba(255,255,255,0.06); border-color: var(--teal-light); }
.contact .btn-ghost { border-color: #fff; color: #fff; }
.contact .btn-ghost:hover { background: #fff; color: var(--navy); }

/* Footer */
.site-footer { background: #081726; color: #9FB6C7; font-size: 0.9rem; padding: 28px 0; }
.footer-row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer p { margin: 0; }
.site-footer a { color: #D7E2EA; text-decoration: none; }
.site-footer a:hover { color: #fff; }

/* Motion */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }
@media print { .reveal { opacity: 1; transform: none; } .site-header, .menu-btn { position: static; } }

/* Responsive */
@media (max-width: 900px) {
  .hero-grid, .two-col { grid-template-columns: 1fr; gap: 40px; }
  .hero-photo { max-width: 420px; order: -1; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .menu-btn { display: inline-block; }
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: flex-start; gap: 0; background: #fff; border-bottom: 1px solid var(--rule); padding: 8px 24px 20px; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 0; width: 100%; font-size: 1.05rem; }
  .nav .nav-cta { width: auto; margin-top: 8px; padding: 10px 20px; }
  .hero { padding: 40px 0 64px; }
  .hero-photo { max-width: 320px; }
  .section { padding: 64px 0; }
  .venture { grid-template-columns: 1fr; gap: 18px; padding: 32px 0; }
  .venture-logo { width: 72px; height: 72px; border-radius: 16px; }
  .talk { grid-template-columns: 1fr; gap: 6px; }
  .pub { padding: 22px 20px; }
  .facts { gap: 24px; }
  .contact-grid { grid-template-columns: 1fr; }
}

/* v2: editorial positioning */
.hero h1 { font-size: clamp(2.8rem, 6.6vw, 5rem); }
.hero-statement { font-family: var(--serif); font-weight: 500; font-size: clamp(1.45rem, 2.6vw, 2.05rem); line-height: 1.28; color: var(--navy); margin: 26px 0 0; max-width: 22em; }
.hero .lede { margin-top: 20px; }
.creds { list-style: none; margin: 56px 0 0; padding: 22px 0 0; border-top: 1px solid var(--rule); display: flex; flex-wrap: wrap; gap: 12px 0; }
.creds li { font-size: 0.95rem; font-weight: 600; color: var(--navy); padding: 0 22px; border-left: 1px solid var(--rule); }
.creds li:first-child { padding-left: 0; border-left: 0; }

.logos { padding: 30px 0; border-bottom: 1px solid var(--rule); }
.logos-row { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.logo-item { display: inline-flex; align-items: center; gap: 10px; color: var(--ink-soft); font-weight: 600; font-size: 1rem; text-decoration: none; opacity: 0.85; filter: grayscale(0.35); transition: opacity 0.2s, filter 0.2s; }
.logo-item:hover { opacity: 1; filter: none; }
.logo-item img { width: auto; height: 36px; }
.logo-item img[src$=".svg"] { height: 22px; }

.expertise { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--rule); }
.exp { padding: 34px 32px 36px 0; border-bottom: 1px solid var(--rule); }
.exp:nth-child(3n+2), .exp:nth-child(3n+3) { padding-left: 32px; border-left: 1px solid var(--rule); }
.exp-num { font-family: var(--serif); font-size: 0.95rem; color: var(--teal); font-weight: 600; margin-bottom: 14px; }
.exp h3 { font-size: 1.4rem; margin-bottom: 12px; }
.exp p { color: var(--ink-soft); margin: 0; }

.quote-band { background: var(--navy); padding: 96px 0; }
.quote { margin: 0; max-width: 52em; }
.quote p { font-family: var(--serif); font-weight: 400; font-size: clamp(1.5rem, 3vw, 2.25rem); line-height: 1.35; color: #fff; margin: 0 0 24px; }
.quote footer { color: var(--teal-light); font-weight: 600; font-size: 0.95rem; }

@media (max-width: 900px) {
  .expertise { grid-template-columns: 1fr 1fr; }
  .exp:nth-child(n) { padding: 30px 24px 30px 0; border-left: 0; }
  .exp:nth-child(2n) { padding-left: 24px; border-left: 1px solid var(--rule); }
}
@media (max-width: 720px) {
  .expertise { grid-template-columns: 1fr; }
  .exp:nth-child(n) { padding: 26px 0; border-left: 0; }
  .creds { margin-top: 36px; flex-direction: column; gap: 8px; }
  .creds li { padding: 0; border-left: 0; }
  .logos-row { justify-content: flex-start; gap: 20px 28px; }
  .quote-band { padding: 64px 0; }
}
@media (min-width: 901px) { .exp:nth-child(5) { grid-column: span 2; } }