:root {
  --navy-950: #03101f;
  --navy-900: #06182f;
  --navy-850: #09213f;
  --navy-800: #0b2a50;
  --blue-600: #0879ee;
  --blue-500: #168cff;
  --blue-100: #e8f3ff;
  --ink-900: #0b1e3b;
  --ink-700: #32435d;
  --ink-500: #68758a;
  --line: #d9e3ee;
  --soft: #f4f7fb;
  --white: #ffffff;
  --sidebar: 172px;
  --shadow: 0 20px 60px rgba(4, 25, 51, .14);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink-900);
  background: var(--navy-950);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.menu-open { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
svg { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.skip-link {
  position: fixed;
  left: 16px;
  top: -100px;
  z-index: 9999;
  padding: 10px 14px;
  color: var(--white);
  background: var(--blue-600);
  border-radius: 8px;
  transition: top .2s ease;
}
.skip-link:focus { top: 16px; }

.scroll-progress {
  position: fixed;
  z-index: 1200;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  pointer-events: none;
}
.scroll-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--blue-500), #6fb8ff);
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 1000;
  width: var(--sidebar);
  min-height: 100vh;
  padding: 28px 20px 24px;
  color: var(--white);
  background:
    radial-gradient(circle at 20% 15%, rgba(22, 140, 255, .18), transparent 28%),
    linear-gradient(180deg, #041426 0%, #06182f 52%, #03101f 100%);
  border-right: 1px solid rgba(255,255,255,.08);
  display: flex;
  flex-direction: column;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  align-self: flex-start;
  color: var(--white);
}
.brand__monogram {
  display: flex;
  font-size: 42px;
  line-height: .9;
  letter-spacing: -4px;
  font-weight: 900;
}
.brand__monogram b:first-child { color: var(--white); }
.brand__monogram b:last-child { color: var(--blue-500); }
.brand__name {
  text-transform: uppercase;
  font-weight: 800;
  font-size: 14px;
  line-height: 1.05;
  letter-spacing: .02em;
}

.site-nav {
  margin-top: 50px;
  display: grid;
  gap: 8px;
}
.site-nav a {
  min-height: 48px;
  display: grid;
  grid-template-columns: 22px 1fr;
  align-items: center;
  gap: 10px;
  padding: 9px 8px;
  color: rgba(255,255,255,.82);
  font-size: 13px;
  line-height: 1.25;
  border-radius: 10px;
  transition: color .2s ease, background .2s ease, transform .2s ease;
}
.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--white);
  background: rgba(255,255,255,.06);
  transform: translateX(2px);
}
.site-nav a.is-active { color: var(--blue-500); }
.site-nav svg { width: 20px; height: 20px; }

.sidebar-social {
  margin-top: auto;
  display: grid;
  gap: 10px;
}
.sidebar-social a {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 50%;
  color: var(--white);
  font-weight: 800;
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.sidebar-social a:hover,
.sidebar-social a:focus-visible {
  background: var(--blue-600);
  border-color: var(--blue-600);
  transform: translateY(-2px);
}
.sidebar-social svg { width: 19px; height: 19px; }

.mobile-header { display: none; }
.page-shell {
  margin-left: var(--sidebar);
  overflow: hidden;
  background: var(--white);
}
.section-anchor { scroll-margin-top: 20px; }

.hero {
  position: relative;
  min-height: 720px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(390px, .95fr);
  align-items: center;
  gap: 36px;
  padding: 90px clamp(42px, 6vw, 110px) 62px;
  color: var(--white);
  background:
    radial-gradient(circle at 82% 18%, rgba(34, 134, 255, .22), transparent 26%),
    linear-gradient(120deg, rgba(3,16,31,.97) 0%, rgba(6,24,47,.96) 45%, rgba(8,38,73,.92) 100%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to right, transparent 0%, #000 55%);
}
.hero__content,
.hero__portrait { position: relative; z-index: 1; }
.eyebrow {
  margin: 0 0 10px;
  color: var(--blue-600);
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: 12px;
  font-weight: 800;
}
.hero .eyebrow { color: #79bdff; }
.hero h1 {
  margin: 0;
  max-width: 620px;
  font-size: clamp(64px, 7.2vw, 118px);
  line-height: .82;
  letter-spacing: -.06em;
  text-transform: uppercase;
  font-weight: 900;
}
.hero h1 span {
  display: block;
  color: var(--blue-500);
}
.hero__disciplines {
  margin: 28px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
  font-size: clamp(14px, 1.35vw, 20px);
  font-weight: 700;
  letter-spacing: .01em;
}
.hero__disciplines i {
  width: 2px;
  height: 20px;
  display: inline-block;
  background: var(--blue-500);
}
.hero__summary {
  max-width: 660px;
  margin: 26px 0 0;
  color: rgba(255,255,255,.82);
  font-size: 17px;
}
.hero__actions {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.button {
  min-height: 48px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid transparent;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: .04em;
  font-size: 12px;
  font-weight: 800;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.button:hover,
.button:focus-visible { transform: translateY(-2px); }
.button svg { width: 19px; height: 19px; }
.button--primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--blue-500), var(--blue-600));
  box-shadow: 0 10px 28px rgba(8,121,238,.28);
}
.button--primary:hover,
.button--primary:focus-visible { box-shadow: 0 14px 32px rgba(8,121,238,.38); }
.button--outline {
  color: var(--white);
  border-color: rgba(255,255,255,.55);
  background: rgba(255,255,255,.02);
}
.button--outline:hover,
.button--outline:focus-visible { background: rgba(255,255,255,.08); border-color: var(--white); }
.button--light {
  min-height: 42px;
  padding-inline: 18px;
  color: var(--blue-600);
  border-color: #8cc6ff;
  background: var(--white);
}
.button--light:hover,
.button--light:focus-visible { background: var(--blue-100); border-color: var(--blue-600); }
.button--large { min-width: 200px; }
.linkedin-mark {
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  color: var(--navy-950);
  background: var(--white);
  border-radius: 2px;
  font-size: 13px;
  font-weight: 900;
}

.hero__portrait {
  justify-self: end;
  width: min(100%, 650px);
  aspect-ratio: 1 / 1;
  display: grid;
  align-items: end;
  border-radius: 42% 42% 18% 18%;
  overflow: hidden;
  box-shadow: 0 30px 90px rgba(0,0,0,.3);
  isolation: isolate;
}
.hero__portrait::before {
  content: "";
  position: absolute;
  inset: 10% 8% 3%;
  border-radius: 45% 45% 20% 20%;
  background: linear-gradient(145deg, rgba(29,125,229,.28), rgba(2,16,31,.8));
  z-index: -1;
}
.hero__portrait::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 34%;
  background: linear-gradient(to top, rgba(3,16,31,.98), transparent);
  pointer-events: none;
}
.hero__portrait picture,
.hero__portrait img { width: 100%; height: 100%; }
.hero__portrait img {
  object-fit: cover;
  object-position: 50% 36%;
  filter: contrast(1.02) saturate(.94);
}
.hero__network {
  position: absolute;
  inset: 0;
  opacity: .5;
  background-image:
    radial-gradient(circle at 14% 20%, #3196ff 0 2px, transparent 3px),
    radial-gradient(circle at 84% 18%, #3196ff 0 2px, transparent 3px),
    radial-gradient(circle at 65% 72%, #3196ff 0 2px, transparent 3px),
    linear-gradient(32deg, transparent 47%, rgba(49,150,255,.28) 48% 49%, transparent 50%),
    linear-gradient(145deg, transparent 47%, rgba(49,150,255,.24) 48% 49%, transparent 50%);
  background-size: 130px 130px, 160px 160px, 190px 190px, 120px 120px, 170px 170px;
  z-index: 0;
}

.content-section {
  padding: 76px clamp(38px, 5.5vw, 100px);
  background: var(--white);
}
.content-section--soft { background: linear-gradient(180deg, #f8fbff, #f3f7fb); }
.content-section--impact { background: linear-gradient(180deg, #f8fbff, #edf5ff); }
.section-heading { margin-bottom: 32px; }
.section-heading h2,
.contact h2 {
  position: relative;
  margin: 0;
  font-size: clamp(29px, 3vw, 46px);
  line-height: 1.05;
  letter-spacing: -.035em;
  text-transform: uppercase;
}
.section-heading h2::after,
.contact h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  margin-top: 13px;
  background: var(--blue-500);
  border-radius: 999px;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(260px, .78fr) minmax(0, 1.7fr);
  gap: clamp(36px, 5vw, 90px);
  align-items: start;
}
.about-copy { font-size: 16px; color: var(--ink-700); }
.about-copy p { margin: 0 0 16px; }
.text-link {
  display: inline-flex;
  gap: 9px;
  margin-top: 10px;
  color: var(--blue-600);
  font-weight: 800;
  font-size: 14px;
}
.text-link span { transition: transform .2s ease; }
.text-link:hover span { transform: translateX(4px); }
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
}
.value-card {
  padding: 10px 26px 18px;
  text-align: center;
  border-left: 1px solid var(--line);
}
.value-card:first-child { border-left: 0; }
.icon-badge {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  color: var(--blue-600);
  border: 2px solid currentColor;
  border-radius: 50%;
}
.icon-badge svg { width: 30px; height: 30px; }
.value-card h3 {
  margin: 0 0 8px;
  color: var(--blue-600);
  text-transform: uppercase;
  font-size: 14px;
}
.value-card p { margin: 0; color: var(--ink-700); font-size: 13px; }

.experience-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}
.experience-grid::before {
  content: "";
  position: absolute;
  top: 3px;
  left: 3%;
  right: 3%;
  height: 1px;
  background: #a9bdd1;
}
.experience-card {
  position: relative;
  padding: 30px 18px 22px;
  color: var(--ink-700);
  background: rgba(255,255,255,.7);
  border-left: 1px solid var(--line);
}
.experience-card:first-child { border-left: 0; }
.experience-card::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 50%;
  width: 11px;
  height: 11px;
  transform: translateX(-50%);
  background: var(--blue-600);
  border: 4px solid #edf6ff;
  border-radius: 50%;
}
.experience-card__logo {
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: 14px;
}
.experience-card__logo img { max-width: 160px; max-height: 66px; object-fit: contain; }
.experience-card h3 {
  margin: 0 0 6px;
  color: var(--ink-900);
  text-transform: uppercase;
  font-size: 14px;
}
.experience-card .role { min-height: 52px; margin: 0 0 7px; color: var(--ink-900); font-weight: 700; font-size: 13px; }
.experience-card .dates { margin: 0 0 14px; color: var(--blue-600); font-size: 13px; font-weight: 800; }
.experience-card p:last-child { margin: 0; font-size: 13px; }
.section-cta { margin-top: 30px; text-align: center; }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 18px;
}
.skill {
  min-height: 140px;
  padding: 18px 10px;
  text-align: center;
  border-radius: var(--radius-sm);
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
}
.skill:hover {
  background: var(--soft);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(4,25,51,.08);
}
.skill svg { width: 42px; height: 42px; color: var(--blue-600); }
.skill h3 { margin: 13px 0 0; font-size: 13px; font-weight: 700; }

.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255,255,255,.65);
  border: 1px solid rgba(10,75,139,.08);
}
.impact-item {
  padding: 34px 24px;
  text-align: center;
  border-left: 1px solid var(--line);
}
.impact-item:first-child { border-left: 0; }
.impact-item strong {
  display: block;
  overflow-wrap: anywhere;
  color: var(--blue-600);
  font-size: clamp(38px, 4vw, 64px);
  line-height: 1;
  letter-spacing: -.04em;
  text-transform: uppercase;
}
.impact-item:last-child strong {
  font-size: clamp(30px, 3.1vw, 50px);
}
.impact-item span {
  display: block;
  margin-top: 9px;
  color: var(--blue-600);
  text-transform: uppercase;
  font-weight: 800;
  font-size: 13px;
}
.impact-item p { margin: 6px 0 0; color: var(--ink-700); font-size: 13px; }

.teaching-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}
.teaching-card {
  min-height: 260px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 24px rgba(4,25,51,.04);
}
.teaching-card__logo {
  height: 90px;
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}
.teaching-card__logo img { max-height: 78px; max-width: 210px; object-fit: contain; }
.teaching-card__logo--square img { max-width: 88px; }
.teaching-card h3 { margin: 0 0 9px; font-size: 15px; }
.teaching-card p { margin: 0; color: var(--ink-700); font-size: 13px; }

.contact {
  padding: 66px clamp(38px, 5.5vw, 100px) 24px;
  display: grid;
  grid-template-columns: 1.1fr .9fr auto;
  gap: 42px;
  align-items: center;
  color: var(--white);
  background:
    radial-gradient(circle at 85% 20%, rgba(22,140,255,.23), transparent 30%),
    linear-gradient(120deg, #041426, #071c37 60%, #0a2a51);
}
.contact .eyebrow { color: #78bcff; }
.contact__intro p:last-child { max-width: 460px; color: rgba(255,255,255,.7); }
.contact__details { display: grid; gap: 12px; }
.contact__details a,
.contact__details span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,.84);
  font-size: 14px;
}
.contact__details a:hover { color: var(--blue-500); }
.contact__details svg { width: 19px; height: 19px; color: #79bdff; }
.contact__actions { display: flex; flex-direction: column; gap: 12px; align-items: stretch; }
.contact__bottom {
  grid-column: 1 / -1;
  margin-top: 20px;
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: rgba(255,255,255,.54);
  border-top: 1px solid rgba(255,255,255,.1);
  font-size: 12px;
}
.contact__bottom p { margin: 0; }
.contact__bottom a:hover { color: var(--white); }

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .65s ease, transform .65s ease;
  transition-delay: var(--delay, 0ms);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

:focus-visible { outline: 3px solid rgba(22,140,255,.65); outline-offset: 3px; }

@media (max-width: 1320px) {
  :root { --sidebar: 156px; }
  .sidebar { padding-inline: 16px; }
  .hero { grid-template-columns: 1fr .85fr; padding-inline: 58px; }
  .experience-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .experience-grid::before { display: none; }
  .experience-card { border: 1px solid var(--line); border-radius: var(--radius-sm); }
  .experience-card::before { display: none; }
  .skills-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
}

@media (max-width: 1040px) {
  .hero { min-height: 650px; grid-template-columns: 1fr .75fr; padding: 82px 42px 54px; }
  .hero h1 { font-size: clamp(58px, 8vw, 88px); }
  .hero__summary { font-size: 15px; }
  .about-grid { grid-template-columns: 1fr; }
  .value-grid { margin-top: 5px; }
  .teaching-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .contact { grid-template-columns: 1fr 1fr; }
  .contact__actions { grid-column: 1 / -1; flex-direction: row; }
}

@media (max-width: 860px) {
  :root { --mobile-header: 72px; }
  .mobile-header {
    position: fixed;
    z-index: 1100;
    inset: 0 0 auto 0;
    height: var(--mobile-header);
    padding: 10px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--white);
    background: rgba(3,16,31,.94);
    border-bottom: 1px solid rgba(255,255,255,.1);
    backdrop-filter: blur(16px);
  }
  .brand--mobile { flex-direction: row; align-items: center; gap: 10px; }
  .brand--mobile .brand__monogram { font-size: 30px; letter-spacing: -3px; }
  .brand--mobile .brand__name { font-size: 11px; }
  .menu-toggle {
    width: 46px;
    height: 46px;
    padding: 0;
    display: grid;
    place-content: center;
    gap: 5px;
    color: var(--white);
    background: transparent;
    border: 1px solid rgba(255,255,255,.24);
    border-radius: 10px;
  }
  .menu-toggle span { width: 22px; height: 2px; background: currentColor; transition: transform .2s ease, opacity .2s ease; }
  .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .sidebar {
    inset: var(--mobile-header) 0 0 auto;
    width: min(88vw, 360px);
    min-height: auto;
    padding: 28px 24px;
    transform: translateX(110%);
    transition: transform .28s ease;
    box-shadow: -18px 0 50px rgba(0,0,0,.3);
  }
  body.menu-open .sidebar { transform: translateX(0); }
  .sidebar > .brand { display: none; }
  .site-nav { margin-top: 0; }
  .site-nav a { font-size: 15px; min-height: 52px; }
  .sidebar-social { margin-top: 30px; grid-template-columns: repeat(3, 42px); }
  .page-shell { margin-left: 0; padding-top: var(--mobile-header); }
  .section-anchor { scroll-margin-top: calc(var(--mobile-header) + 8px); }
  .hero { min-height: auto; grid-template-columns: 1fr; padding: 64px 26px 0; }
  .hero__content { padding-bottom: 38px; }
  .hero__portrait { justify-self: center; width: min(100%, 560px); border-radius: 36% 36% 0 0; }
  .content-section { padding: 64px 26px; }
  .value-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .value-card:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); padding-top: 24px; }
  .value-card:nth-child(4) { border-top: 1px solid var(--line); padding-top: 24px; }
  .experience-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .skills-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .impact-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .impact-item:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .impact-item:nth-child(4) { border-top: 1px solid var(--line); }
  .contact { padding: 62px 26px 24px; grid-template-columns: 1fr; }
  .contact__actions { grid-column: auto; }
}

@media (max-width: 580px) {
  .hero { padding-inline: 20px; }
  .hero h1 { font-size: clamp(48px, 15.2vw, 60px); letter-spacing: -.07em; }
  .hero__disciplines { display: grid; font-size: 13px; gap: 3px; }
  .hero__disciplines i { display: none; }
  .hero__actions { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .content-section { padding: 54px 20px; }
  .section-heading { margin-bottom: 26px; }
  .section-heading h2,
  .contact h2 { font-size: 30px; }
  .value-grid { grid-template-columns: 1fr; }
  .value-card { border-left: 0; border-top: 1px solid var(--line); padding: 24px 10px; }
  .value-card:first-child { border-top: 0; }
  .experience-grid { grid-template-columns: 1fr; }
  .experience-card { padding: 24px 20px; }
  .experience-card .role { min-height: auto; }
  .skills-grid { gap: 8px; }
  .skill { min-height: 126px; padding-inline: 6px; }
  .skill h3 { font-size: 12px; }
  .impact-grid { grid-template-columns: 1fr; }
  .impact-item { border-left: 0; border-top: 1px solid var(--line); }
  .impact-item:first-child { border-top: 0; }
  .teaching-grid { grid-template-columns: 1fr; }
  .teaching-card { min-height: auto; }
  .contact { padding-inline: 20px; }
  .contact__actions { flex-direction: column; }
  .contact__bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}