:root {
  --navy-950: #07121f;
  --navy-900: #0b1929;
  --navy-800: #11243a;
  --ink: #112034;
  --ink-soft: #536274;
  --paper: #f7f8f5;
  --white: #ffffff;
  --line: #d8dedf;
  --line-dark: rgba(255,255,255,.14);
  --gold: #f4b740;
  --gold-soft: #ffd982;
  --teal: #48d6c4;
  --teal-dark: #0d716a;
  --shell: min(1180px, calc(100% - 48px));
  --radius-sm: 8px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --shadow: 0 32px 90px rgba(5, 14, 24, .18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
body.nav-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }
h1, h2 { letter-spacing: -.045em; }
h3 { letter-spacing: -.025em; }
.shell { width: var(--shell); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 100; padding: 10px 14px; background: var(--white); color: var(--ink); transform: translateY(-150%); border-radius: 6px; }
.skip-link:focus { transform: none; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  color: var(--white);
  background: linear-gradient(to bottom, rgba(7,18,31,.92), rgba(7,18,31,.58), transparent);
  transition: background .25s ease, box-shadow .25s ease;
}
.site-header.scrolled { background: rgba(7,18,31,.96); box-shadow: 0 12px 40px rgba(0,0,0,.16); backdrop-filter: blur(16px); }
.header-inner { min-height: 86px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; background: var(--gold); color: var(--navy-950); border-radius: 11px 4px 11px 4px; font-weight: 900; }
.brand-copy { display: grid; line-height: 1.15; }
.brand-copy strong { font-size: .94rem; letter-spacing: .02em; }
.brand-copy small { margin-top: 5px; color: rgba(255,255,255,.55); font-family: ui-monospace, "Cascadia Mono", monospace; font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; }
.primary-nav { display: flex; align-items: center; gap: 28px; font-size: .9rem; font-weight: 600; }
.primary-nav a:not(.nav-cta) { color: rgba(255,255,255,.72); transition: color .2s ease; }
.primary-nav a:hover, .primary-nav a:focus-visible { color: var(--white); }
.nav-cta { padding: 10px 16px; border: 1px solid rgba(255,255,255,.28); border-radius: 999px; }
.menu-toggle { display: none; width: 48px; height: 48px; align-items: center; justify-content: center; flex-direction: column; gap: 6px; background: transparent; border: 1px solid rgba(255,255,255,.25); color: white; border-radius: 50%; cursor: pointer; }
.menu-toggle span:not(.sr-only) { width: 18px; height: 2px; background: currentColor; transition: transform .2s ease; }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { transform: translateY(4px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-4px) rotate(-45deg); }

.hero { position: relative; overflow: hidden; padding: 166px 0 0; color: var(--white); background: radial-gradient(circle at 78% 22%, rgba(31,91,110,.44), transparent 28%), linear-gradient(132deg, var(--navy-950), #0c1e33 58%, #112d3a); }
.hero::after { content: ""; position: absolute; width: 420px; height: 420px; right: -150px; bottom: 40px; border: 1px solid rgba(72,214,196,.15); border-radius: 50%; box-shadow: 0 0 0 70px rgba(72,214,196,.035), 0 0 0 140px rgba(72,214,196,.025); }
.hero-grid { position: absolute; inset: 0; opacity: .2; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to bottom, black, transparent 88%); }
.hero-layout { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(430px, .92fr); gap: 72px; align-items: center; padding-bottom: 72px; }
.eyebrow { display: flex; align-items: center; gap: 11px; margin-bottom: 24px; color: var(--teal); font-family: ui-monospace, "Cascadia Mono", monospace; font-size: .76rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow span { width: 32px; height: 1px; background: currentColor; }
.eyebrow.dark { color: var(--teal-dark); }
.hero h1 { max-width: 760px; margin-bottom: 24px; font-size: clamp(4.3rem, 7vw, 7.4rem); line-height: .88; font-weight: 760; }
.hero-positioning { max-width: 790px; margin-bottom: 24px; color: var(--gold-soft); font-size: clamp(1.05rem, 1.7vw, 1.34rem); line-height: 1.45; font-weight: 650; }
.hero-positioning i { display: inline-block; width: 4px; height: 4px; margin: 0 10px 4px; background: var(--teal); border-radius: 50%; }
.hero-lead { max-width: 670px; margin-bottom: 32px; color: rgba(255,255,255,.72); font-size: 1.1rem; line-height: 1.72; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 20px; padding: 12px 20px; border: 1px solid transparent; border-radius: 999px; font-size: .9rem; font-weight: 750; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--gold); color: var(--navy-950); }
.button-secondary { border-color: rgba(255,255,255,.28); color: var(--white); }
.button-secondary:hover { background: rgba(255,255,255,.08); }
.button-dark { background: var(--navy-950); color: var(--white); }

.hero-visual { position: relative; min-height: 540px; }
.hero-composite { position: absolute; inset: 0; margin: 0; overflow: hidden; border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius-lg); background: #0b1c2a; box-shadow: var(--shadow); }
.hero-composite::after { content: ""; position: absolute; inset: 0; background: linear-gradient(145deg, rgba(7,18,31,.02), rgba(7,18,31,.12) 42%, rgba(7,18,31,.82)); }
.hero-energy-image { width: 100%; height: 100%; object-fit: cover; object-position: 61% center; }
.hero-composite > figcaption { position: absolute; z-index: 2; top: 22px; left: 24px; color: rgba(255,255,255,.76); font-family: ui-monospace, "Cascadia Mono", monospace; font-size: .68rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.portrait-badge { position: absolute; z-index: 4; top: 18px; right: 18px; width: 132px; padding: 7px; border: 1px solid rgba(255,255,255,.18); border-radius: 18px; background: rgba(7,18,31,.78); box-shadow: 0 18px 50px rgba(4,13,21,.3); backdrop-filter: blur(14px); }
.portrait-badge img { width: 116px; height: 116px; object-fit: cover; object-position: center 18%; border-radius: 12px; }
.portrait-badge span { display: grid; gap: 2px; padding: 8px 3px 2px; color: rgba(255,255,255,.54); font-size: .58rem; line-height: 1.35; }
.portrait-badge strong { color: var(--white); font-size: .72rem; }
.lens-card { position: absolute; z-index: 3; right: 18px; bottom: 18px; left: 18px; padding: 17px 18px 13px; color: var(--white); background: rgba(7,18,31,.76); border: 1px solid rgba(255,255,255,.18); border-radius: 16px; backdrop-filter: blur(16px); }
.lens-card > p { margin-bottom: 11px; color: var(--gold-soft); font-family: ui-monospace, monospace; font-size: .67rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.lens-card ol { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 0 0 8px; padding: 0; list-style: none; }
.lens-card li { display: grid; gap: 3px; color: rgba(255,255,255,.86); font-size: .72rem; font-weight: 700; }
.lens-card li span { color: var(--teal); font-family: ui-monospace, monospace; font-size: .58rem; }
.lens-card svg { display: block; width: 100%; height: 35px; color: var(--teal); }
.evidence-strip { position: relative; z-index: 4; display: grid; grid-template-columns: .7fr .8fr .7fr 1.8fr; border-top: 1px solid var(--line-dark); }
.evidence-strip div { min-height: 110px; display: flex; flex-direction: column; justify-content: center; padding: 18px 28px; border-right: 1px solid var(--line-dark); }
.evidence-strip div:first-child { border-left: 1px solid var(--line-dark); }
.evidence-strip strong { color: var(--gold); font-size: 1.45rem; line-height: 1.2; }
.evidence-strip span { margin-top: 7px; color: rgba(255,255,255,.53); font-size: .73rem; letter-spacing: .06em; text-transform: uppercase; }

.section-light, .section-paper, .section-dark, .investing-section { padding: 120px 0; }
.section-light { background: #edf1ef; }
.section-paper { background: var(--paper); }
.section-dark { color: var(--white); background: var(--navy-950); }
.section-heading { margin-bottom: 56px; }
.split-heading { display: grid; grid-template-columns: 1.15fr .85fr; gap: 100px; align-items: end; }
.section-heading h2, .profile-intro h2, .publications-sticky h2, .teaching-copy h2, .investing-copy h2, .contact-card h2 { margin-bottom: 0; font-size: clamp(2.4rem, 4.4vw, 4.7rem); line-height: 1.02; }
.split-heading > p { max-width: 520px; margin: 0; color: var(--ink-soft); font-size: 1.05rem; }
.light-heading > p { color: rgba(255,255,255,.58); }
.discipline-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.discipline { min-height: 510px; display: flex; flex-direction: column; padding: 22px 22px 34px; overflow: hidden; border-radius: var(--radius-lg); }
.science-card { color: var(--white); background: linear-gradient(135deg, #0b2836, #0d544f); }
.capital-card { color: var(--white); background: linear-gradient(135deg, #182844, #243d64); }
.card-label { color: var(--gold-soft); font-family: ui-monospace, monospace; font-size: .72rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.discipline-image, .market-visual { height: 218px; margin: 0 0 30px; overflow: hidden; border: 1px solid rgba(255,255,255,.12); border-radius: 14px; background: rgba(5,16,27,.28); }
.discipline-image img { width: 100%; height: 100%; object-fit: cover; object-position: 60% center; }
.market-visual { position: relative; display: grid; align-items: end; padding: 16px 18px 12px; }
.market-visual svg { width: 100%; height: 158px; }
.chart-grid path { fill: none; stroke: rgba(255,255,255,.09); stroke-width: 1; }
.chart-area { fill: url(#none); fill: rgba(72,214,196,.12); }
.chart-line { fill: none; stroke: var(--teal); stroke-width: 4; stroke-linecap: round; }
.market-visual circle { fill: var(--gold); stroke: rgba(255,255,255,.9); stroke-width: 3; }
.market-visual figcaption { color: rgba(255,255,255,.52); font-family: ui-monospace, monospace; font-size: .65rem; letter-spacing: .08em; text-transform: uppercase; }
.discipline h3 { max-width: 500px; margin: 0 16px 16px; font-size: clamp(2rem, 3vw, 3.2rem); line-height: 1.04; }
.discipline > p { max-width: 560px; margin-inline: 16px; color: rgba(255,255,255,.68); }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; padding: 0; list-style: none; }
.discipline .tag-list { margin-inline: 16px; }
.tag-list li { padding: 7px 11px; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; color: rgba(255,255,255,.75); font-size: .72rem; }

.profile-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; }
.profile-intro { position: sticky; top: 120px; align-self: start; }
.profile-visual, .publications-visual { position: relative; margin: 34px 0 0; overflow: hidden; border-radius: var(--radius-md); background: var(--navy-900); }
.profile-visual { height: 255px; }
.profile-visual::after, .publications-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to bottom, transparent 50%, rgba(7,18,31,.86)); }
.profile-visual img, .publications-visual img { width: 100%; height: 100%; object-fit: cover; }
.profile-visual figcaption, .publications-visual figcaption { position: absolute; z-index: 2; right: 18px; bottom: 15px; left: 18px; color: rgba(255,255,255,.78); font-family: ui-monospace, monospace; font-size: .64rem; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; }
.profile-body { max-width: 720px; }
.profile-body > p { color: var(--ink-soft); font-size: 1.05rem; }
.profile-body .lead-paragraph { color: var(--ink); font-size: 1.35rem; line-height: 1.65; }
.profile-facts { margin: 50px 0 0; border-top: 1px solid var(--line); }
.profile-facts div { display: grid; grid-template-columns: 160px 1fr; gap: 30px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.profile-facts dt { color: var(--teal-dark); font-family: ui-monospace, monospace; font-size: .73rem; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; }
.profile-facts dd { margin: 0; font-weight: 680; }

.research-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.research-card, .research-card.featured-card { min-height: 540px; display: flex; flex-direction: column; gap: 0; padding: 0; overflow: hidden; border: 1px solid var(--line-dark); border-radius: var(--radius-md); background: var(--navy-900); }
.research-card.featured-card { grid-row: auto; background: var(--navy-900); }
.research-media { width: 100%; height: 270px; flex: 0 0 auto; object-fit: cover; }
.featured-card .research-media { object-position: 60% center; }
.research-card > div { max-width: 560px; padding: 30px 32px 34px; }
.research-card h3 { margin: 12px 0 14px; font-size: clamp(1.65rem, 2.6vw, 2.75rem); line-height: 1.1; }
.research-card p:last-child { margin-bottom: 0; color: rgba(255,255,255,.58); }

.publications-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 90px; }
.publications-sticky { position: sticky; top: 120px; align-self: start; }
.publications-sticky h2 { font-size: clamp(2.4rem, 4vw, 4.1rem); }
.publications-sticky > p:not(.eyebrow) { margin: 24px 0; color: var(--ink-soft); }
.publications-visual { height: 220px; margin: 0 0 22px; }
.publications-visual img { object-position: center 48%; }
.text-link { display: inline-flex; align-items: center; gap: 12px; color: var(--teal-dark); font-weight: 750; }
.publication-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.publication-list li { display: grid; grid-template-columns: 74px 1fr; gap: 26px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.pub-year { color: var(--teal-dark); font-family: ui-monospace, monospace; font-size: .8rem; font-weight: 700; }
.publication-list h3 { margin-bottom: 9px; font-size: 1.06rem; line-height: 1.45; }
.publication-list p { margin: 0; color: var(--ink-soft); font-size: .83rem; }

.teaching-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 86px; align-items: center; }
.teaching-copy h2 { font-size: clamp(2.7rem, 4.7vw, 4.8rem); }
.teaching-copy > p:not(.eyebrow) { margin: 28px 0; color: var(--ink-soft); font-size: 1.05rem; }
.teaching-showcase { position: relative; min-height: 540px; margin: 0; overflow: hidden; border-radius: var(--radius-lg); background: var(--navy-900); box-shadow: var(--shadow); }
.teaching-showcase::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to bottom, transparent 30%, rgba(7,18,31,.18) 48%, rgba(7,18,31,.96) 88%); }
.teaching-showcase > img { width: 100%; height: 540px; object-fit: cover; }
.teaching-overlay { position: absolute; z-index: 2; inset: auto 34px 32px; color: var(--white); }
.teaching-overlay > span { color: var(--gold-soft); font-family: ui-monospace, monospace; font-size: .68rem; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.teaching-overlay h3 { max-width: 650px; margin: 12px 0 0; font-size: clamp(1.7rem, 3vw, 2.8rem); line-height: 1.08; }
.teaching-overlay .tag-list { margin-top: 22px; }

.investing-section { position: relative; overflow: hidden; color: var(--white); background: linear-gradient(130deg, #0b1929 0%, #102f3a 56%, #0d4c49 100%); }
.investing-section::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(circle at 76% 28%, rgba(72,214,196,.18), transparent 25%); }
.investing-layout { position: relative; display: grid; grid-template-columns: .95fr 1.05fr; gap: 90px; align-items: center; }
.investing-copy h2 { font-size: clamp(2.8rem, 5vw, 5rem); }
.investing-copy > p:not(.eyebrow) { max-width: 640px; color: rgba(255,255,255,.67); }
.investment-stack { display: grid; gap: 16px; }
.investment-image { position: relative; height: 290px; margin: 0; overflow: hidden; border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius-lg); background: var(--navy-950); box-shadow: var(--shadow); }
.investment-image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to bottom, transparent 45%, rgba(7,18,31,.9)); }
.investment-image img { width: 100%; height: 100%; object-fit: cover; }
.investment-image figcaption { position: absolute; z-index: 2; left: 24px; bottom: 20px; color: rgba(255,255,255,.75); font-family: ui-monospace, monospace; font-size: .68rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.process-panel { position: relative; padding: 24px 32px; border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius-lg); background: rgba(5,16,27,.38); box-shadow: var(--shadow); backdrop-filter: blur(14px); }
.process-panel article { position: relative; z-index: 2; display: grid; grid-template-columns: 46px 1fr; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line-dark); }
.process-panel article:last-child { border-bottom: 0; }
.process-panel article > span { width: 36px; height: 36px; display: grid; place-items: center; color: var(--navy-950); background: var(--gold); border-radius: 50%; font-family: ui-monospace, monospace; font-size: .7rem; font-weight: 800; }
.process-panel h3 { margin: 0 0 5px; font-size: 1.06rem; }
.process-panel p { margin: 0; color: rgba(255,255,255,.58); font-size: .87rem; }
.process-line { position: absolute; z-index: 1; top: 58px; bottom: 58px; left: 50px; width: 1px; background: rgba(244,183,64,.45); }

.contact-card { display: grid; grid-template-columns: 180px 1fr .8fr; gap: 48px; align-items: center; padding: 54px; background: var(--white); border-radius: var(--radius-lg); box-shadow: 0 20px 70px rgba(13,32,48,.08); }
.contact-visual { width: 180px; height: 220px; overflow: hidden; border-radius: 90px 90px 20px 20px; background: var(--navy-900); }
.contact-visual img { width: 100%; height: 100%; object-fit: cover; object-position: 46% center; }
.contact-card h2 { font-size: clamp(2.4rem, 4.4vw, 4.3rem); }
.contact-copy p { color: var(--ink-soft); }
.site-footer { padding: 70px 0 30px; color: var(--white); background: #040c14; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.footer-identity { display: flex; align-items: center; gap: 22px; }
.footer-image { width: 104px; height: 104px; flex: 0 0 104px; object-fit: cover; object-position: 67% center; border: 1px solid rgba(255,255,255,.15); border-radius: 20px; }
.footer-brand { margin-bottom: 22px; }
.footer-identity p { color: rgba(255,255,255,.48); font-size: .83rem; }
.footer-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 30px; align-content: start; }
.footer-links a { color: rgba(255,255,255,.66); font-size: .88rem; }
.footer-links a:hover { color: var(--white); }
.footer-bottom { display: flex; justify-content: space-between; margin-top: 55px; padding-top: 24px; border-top: 1px solid var(--line-dark); color: rgba(255,255,255,.34); font-family: ui-monospace, monospace; font-size: .67rem; letter-spacing: .07em; text-transform: uppercase; }

/* Teaching library */
.learning-hero { padding: 166px 0 105px; color: var(--white); background: radial-gradient(circle at 15% 30%, rgba(31,91,110,.3), transparent 28%), linear-gradient(135deg, var(--navy-950), #0d2435 62%, #123b42); }
.learning-hero-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: center; }
.learning-hero-layout > *, .featured-learning-grid > *, .learning-section-heading > * { min-width: 0; }
.learning-hero h1 { margin-bottom: 28px; font-size: clamp(4.4rem, 7vw, 7.2rem); line-height: .88; }
.learning-lead { max-width: 610px; margin-bottom: 34px; color: rgba(255,255,255,.69); font-size: 1.08rem; }
.learning-hero-image { position: relative; height: 520px; margin: 0; overflow: hidden; border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.learning-hero-image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to bottom, transparent 52%, rgba(7,18,31,.82)); }
.learning-hero-image img { width: 100%; height: 100%; object-fit: cover; }
.learning-hero-image figcaption { position: absolute; z-index: 2; right: 24px; bottom: 21px; left: 24px; color: rgba(255,255,255,.76); font-family: ui-monospace, monospace; font-size: .68rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.featured-learning-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; align-items: start; }
.featured-copy h2, .learning-section-heading h2 { margin-bottom: 0; font-size: clamp(2.7rem, 4.8vw, 4.9rem); line-height: 1.02; }
.featured-copy > p:not(.eyebrow) { margin: 28px 0 20px; color: var(--ink-soft); font-size: 1.05rem; }
.featured-status { display: flex; align-items: center; gap: 10px; margin-bottom: 26px; color: var(--teal-dark); font-family: ui-monospace, monospace; font-size: .7rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.featured-status span { width: 8px; height: 8px; background: var(--gold); border-radius: 50%; }
.lesson-sequence { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.lesson-sequence li { display: grid; grid-template-columns: 46px 1fr; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.lesson-sequence li > span { width: 36px; height: 36px; display: grid; place-items: center; color: var(--navy-950); background: var(--gold); border-radius: 50%; font-family: ui-monospace, monospace; font-size: .68rem; font-weight: 800; }
.lesson-sequence strong { display: block; margin-bottom: 6px; font-size: 1rem; }
.lesson-sequence p { margin: 0; color: var(--ink-soft); font-size: .88rem; }
.learning-section-heading { display: grid; grid-template-columns: 1.1fr .9fr; gap: 90px; align-items: end; margin-bottom: 50px; }
.learning-section-heading > p { max-width: 520px; margin: 0; color: var(--ink-soft); }
.course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.course-card { min-height: 310px; display: flex; flex-direction: column; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius-md); background: rgba(255,255,255,.62); transition: transform .2s ease, border-color .2s ease, background .2s ease; }
.course-card:hover { transform: translateY(-4px); border-color: rgba(19,101,95,.32); background: var(--white); }
.course-card-featured { color: var(--white); background: linear-gradient(145deg, #0b2637, #0d534f); border-color: transparent; }
.course-card-featured:hover { color: var(--white); background: linear-gradient(145deg, #0c3043, #11635d); }
.course-code { color: var(--teal-dark); font-family: ui-monospace, monospace; font-size: .67rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.course-card-featured .course-code { color: var(--gold-soft); }
.course-card h3 { margin: 38px 0 14px; font-size: 1.65rem; line-height: 1.08; }
.course-card p { margin-bottom: 24px; color: var(--ink-soft); font-size: .9rem; }
.course-card-featured p { color: rgba(255,255,255,.66); }
.course-card strong { display: flex; align-items: center; justify-content: space-between; margin-top: auto; color: var(--teal-dark); font-size: .82rem; }
.course-card-featured strong { color: var(--gold-soft); }
.learning-formats .learning-section-heading > p { color: rgba(255,255,255,.58); }
.format-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; overflow: hidden; border: 1px solid var(--line-dark); border-radius: var(--radius-lg); background: var(--line-dark); }
.format-grid div { min-height: 150px; display: flex; flex-direction: column; justify-content: space-between; padding: 26px; background: var(--navy-900); }
.format-grid span { color: var(--gold); font-family: ui-monospace, monospace; font-size: .72rem; font-weight: 800; }
.format-grid strong { font-size: 1.08rem; }

:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }
section[id] { scroll-margin-top: 85px; }

@media (max-width: 980px) {
  :root { --shell: min(100% - 36px, 760px); }
  .menu-toggle { display: flex; }
  .primary-nav { position: fixed; inset: 86px 0 auto; display: grid; gap: 0; padding: 12px 18px 24px; background: rgba(7,18,31,.98); border-top: 1px solid var(--line-dark); transform: translateY(-140%); transition: transform .25s ease; }
  .primary-nav.open { transform: none; }
  .primary-nav a { min-height: 52px; display: flex; align-items: center; padding: 0 8px; border-bottom: 1px solid var(--line-dark); }
  .primary-nav .nav-cta { margin-top: 12px; justify-content: center; border: 1px solid rgba(255,255,255,.25); }
  .hero { padding-top: 132px; }
  .hero-layout { grid-template-columns: 1fr; gap: 54px; }
  .hero-visual { min-height: 560px; }
  .evidence-strip { grid-template-columns: repeat(2, 1fr); }
  .evidence-strip div:nth-child(2) { border-right: 0; }
  .split-heading, .profile-layout, .publications-layout, .teaching-layout, .investing-layout, .contact-card { grid-template-columns: 1fr; gap: 42px; }
  .learning-hero-layout, .featured-learning-grid, .learning-section-heading { grid-template-columns: 1fr; gap: 42px; }
  .learning-hero-image { height: 440px; }
  .course-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-visual { width: 100%; height: 220px; border-radius: 24px; }
  .profile-intro, .publications-sticky { position: static; }
  .section-light, .section-paper, .section-dark, .investing-section { padding: 94px 0; }
}

@media (max-width: 680px) {
  :root { --shell: calc(100% - 32px); }
  .header-inner { min-height: 74px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-copy small { display: none; }
  .primary-nav { inset: 74px 0 auto; }
  .hero { padding-top: 116px; }
  .hero h1 { font-size: clamp(3.25rem, 15vw, 5rem); }
  .hero-positioning { font-size: 1rem; }
  .hero-positioning i { margin-inline: 6px; }
  .hero-lead { font-size: 1rem; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .hero-visual { min-height: 410px; }
  .hero-composite { inset: 16px 0 0; border-radius: 20px; }
  .hero-energy-image { object-position: 57% center; }
  .hero-composite > figcaption { top: 16px; left: 16px; max-width: 170px; font-size: .58rem; line-height: 1.5; }
  .portrait-badge { top: 12px; right: 12px; width: 94px; padding: 6px; border-radius: 15px; }
  .portrait-badge img { width: 80px; height: 80px; border-radius: 10px; }
  .portrait-badge span { display: none; }
  .lens-card { width: auto; top: auto; right: 14px; bottom: 14px; left: 14px; padding: 14px; }
  .lens-card > p { margin-bottom: 9px; }
  .lens-card ol { grid-template-columns: repeat(2, 1fr); gap: 7px 14px; margin-bottom: 0; }
  .lens-card li { display: flex; gap: 6px; }
  .lens-card svg { display: none; }
  .evidence-strip { width: 100%; grid-template-columns: 1fr 1fr; }
  .evidence-strip div { min-height: 96px; padding: 16px; }
  .evidence-strip div:first-child, .evidence-strip div:nth-child(3) { border-left: 0; }
  .evidence-strip div:nth-child(3), .evidence-strip div:nth-child(4) { border-top: 1px solid var(--line-dark); }
  .evidence-strip strong { font-size: 1.12rem; }
  .evidence-strip span { font-size: .63rem; }
  .section-light, .section-paper, .section-dark, .investing-section { padding: 76px 0; }
  .section-heading h2, .profile-intro h2, .publications-sticky h2, .teaching-copy h2, .investing-copy h2, .contact-card h2 { font-size: clamp(2.35rem, 11vw, 3.4rem); }
  .split-heading { gap: 28px; }
  .discipline-grid, .research-grid { grid-template-columns: 1fr; }
  .discipline { min-height: 480px; padding: 16px 16px 28px; }
  .discipline-image, .market-visual { height: 190px; margin-bottom: 26px; }
  .discipline h3, .discipline > p, .discipline .tag-list { margin-inline: 10px; }
  .research-card, .research-card.featured-card { min-height: 500px; padding: 0; }
  .research-media { height: 235px; }
  .research-card > div { padding: 26px 24px 30px; }
  .profile-facts div { grid-template-columns: 1fr; gap: 6px; }
  .publication-list li { grid-template-columns: 56px 1fr; gap: 14px; }
  .teaching-showcase { min-height: 440px; }
  .teaching-showcase > img { height: 440px; }
  .teaching-overlay { inset: auto 22px 22px; }
  .teaching-overlay h3 { font-size: 1.75rem; }
  .investment-image { height: 230px; }
  .process-panel { padding: 16px 20px; }
  .process-line { left: 38px; }
  .contact-card { padding: 30px 24px; }
  .contact-visual { height: 150px; border-radius: 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-identity { align-items: flex-start; }
  .footer-image { width: 82px; height: 82px; flex-basis: 82px; border-radius: 16px; }
  .footer-bottom { display: grid; gap: 8px; }
  .learning-hero { padding: 126px 0 76px; }
  .learning-hero h1 { font-size: clamp(2.9rem, 12vw, 4rem); }
  .learning-hero-image { height: 340px; }
  .featured-copy h2, .learning-section-heading h2 { font-size: clamp(2.35rem, 11vw, 3.4rem); }
  .course-grid, .format-grid { grid-template-columns: 1fr; }
  .course-card { min-height: 270px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}