:root {
  --ink: #07111f;
  --ink-soft: #102239;
  --surface: #f4f6f8;
  --paper: #ffffff;
  --text: #162234;
  --muted: #5e6a79;
  --line: #d9e0e7;
  --cyan: #0b8fa8;
  --cyan-dark: #08758a;
  --cyan-pale: #dff4f7;
  --gold: #c89b45;
  --white: #f8fafc;
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 30px;
  --shadow: 0 24px 70px rgba(7, 17, 31, 0.14);
  --shell: 1180px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }
a { color: inherit; }
p, h1, h2, h3, ul { margin-top: 0; }

.shell {
  width: min(calc(100% - 48px), var(--shell));
  margin-inline: auto;
}

.section { padding-block: 112px; }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(7, 17, 31, 0.94);
  color: var(--white);
  backdrop-filter: blur(16px);
}

.nav-wrap {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 36px;
}

.monogram {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  color: var(--white);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
}

nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
}

nav a,
.nav-cta {
  color: #cbd5e1;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
  transition: color 160ms ease;
}

nav a:hover,
.nav-cta:hover { color: #ffffff; }

.nav-cta {
  padding: 9px 15px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(360px, 0.75fr);
  gap: 70px;
  align-items: center;
  min-height: 760px;
  padding-block: 92px 104px;
}

.hero::before {
  content: "";
  position: absolute;
  top: 8%;
  left: -24%;
  z-index: -1;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(11, 143, 168, 0.13), rgba(11, 143, 168, 0) 68%);
  pointer-events: none;
}

.eyebrow {
  margin-bottom: 20px;
  color: var(--cyan-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1.3;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 760px;
  margin-bottom: 16px;
  color: var(--ink);
  font-size: clamp(52px, 6.4vw, 86px);
  font-weight: 780;
  letter-spacing: -0.055em;
  line-height: 0.96;
}

.hero h1 span { color: var(--cyan-dark); }

.hero-role {
  margin-bottom: 22px;
  color: var(--gold);
  font-size: clamp(22px, 2.3vw, 31px);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero-lead {
  max-width: 690px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 52px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 750;
  line-height: 1.3;
  text-decoration: none;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--ink); color: var(--white); }
.button-primary:hover { background: var(--ink-soft); }
.button-secondary { border-color: var(--line); background: var(--paper); color: var(--ink); }
.button-secondary:hover { border-color: #aeb9c4; }
.button-light { flex: 0 0 auto; background: var(--white); color: var(--ink); }

.hero-facts {
  max-width: 690px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-bottom: 0;
  padding: 0;
  list-style: none;
}

.hero-facts li { min-width: 0; padding-right: 22px; }
.hero-facts li + li { padding-left: 22px; border-left: 1px solid var(--line); }
.hero-facts strong, .hero-facts span { display: block; }
.hero-facts strong { margin-bottom: 2px; color: var(--ink); font-size: 23px; line-height: 1.2; }
.hero-facts span { color: var(--muted); font-size: 13px; line-height: 1.45; }

.profile-card {
  overflow: hidden;
  border: 1px solid #dbe2e8;
  border-radius: var(--radius-lg);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.portrait-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: #cdd8e0;
}

.portrait-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7, 17, 31, 0.28), transparent 50%);
  pointer-events: none;
}

.portrait-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 34%;
}

.availability {
  position: absolute;
  right: 18px;
  bottom: 18px;
  z-index: 1;
  padding: 7px 11px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  background: rgba(7, 17, 31, 0.8);
  color: #ffffff;
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.04em;
  backdrop-filter: blur(12px);
}

.profile-content { padding: 30px; }

.label {
  margin-bottom: 8px;
  color: var(--cyan-dark);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.profile-content h2 {
  margin-bottom: 3px;
  color: var(--ink);
  font-size: 28px;
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.organization {
  margin-bottom: 17px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 700;
}

.profile-content > p:not(.label):not(.organization) {
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.profile-tags { display: flex; flex-wrap: wrap; gap: 7px; }

.profile-tags span,
.chip-list li {
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--cyan-pale);
  color: #126c7c;
  font-size: 11px;
  font-weight: 750;
}

.section-heading { margin-bottom: 54px; }

.section-heading h2 {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--ink);
  font-size: clamp(36px, 4.5vw, 54px);
  font-weight: 760;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 70px;
  align-items: end;
}

.split-heading > p { max-width: 420px; margin-bottom: 3px; color: var(--muted); }
.intro { border-top: 1px solid var(--line); }

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 90px;
}

.intro-statement {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: clamp(23px, 2.6vw, 32px);
  font-weight: 520;
  letter-spacing: -0.025em;
  line-height: 1.45;
}

.principles article {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  padding-block: 22px;
  border-top: 1px solid var(--line);
}

.principles article:last-child { border-bottom: 1px solid var(--line); }
.principles article > span { color: var(--gold); font-size: 12px; font-weight: 800; }
.principles h3 { margin-bottom: 5px; color: var(--ink); font-size: 18px; }
.principles p { margin-bottom: 0; color: var(--muted); font-size: 14px; }

.expertise { background: var(--ink); color: var(--white); }
.expertise .eyebrow { color: #66c9d9; }
.expertise .section-heading h2 { color: var(--white); }
.expertise .split-heading > p { color: #aebccc; }

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  border-left: 1px solid rgba(255, 255, 255, 0.14);
}

.expertise-card {
  min-height: 330px;
  padding: 36px;
  border-right: 1px solid rgba(255, 255, 255, 0.14);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.01);
}

.expertise-card.featured {
  background: linear-gradient(140deg, rgba(11, 143, 168, 0.2), rgba(11, 143, 168, 0.02));
}

.card-number { margin-bottom: 52px; color: var(--gold); font-size: 12px; font-weight: 800; }
.expertise-card h3 { margin-bottom: 13px; color: #ffffff; font-size: 25px; letter-spacing: -0.025em; }
.expertise-card > p:not(.card-number) { max-width: 480px; margin-bottom: 25px; color: #afbdcc; }

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 0;
  padding: 0;
  list-style: none;
}

.chip-list li {
  border: 1px solid rgba(102, 201, 217, 0.2);
  background: rgba(11, 143, 168, 0.12);
  color: #91d7e1;
}

.timeline { border-top: 1px solid var(--line); }

.timeline-item {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 42px;
  padding-block: 32px;
  border-bottom: 1px solid var(--line);
}

.timeline-date {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding-top: 4px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
  text-transform: uppercase;
}

.current-pill {
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--cyan-pale);
  color: var(--cyan-dark);
  font-size: 9px;
}

.company {
  margin-bottom: 5px;
  color: var(--cyan-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.timeline-content h3 { margin-bottom: 8px; color: var(--ink); font-size: 24px; letter-spacing: -0.025em; }
.timeline-content p:last-child { max-width: 720px; margin-bottom: 0; color: var(--muted); }
.timeline-item.current { position: relative; }

.timeline-item.current::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 38px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 6px rgba(200, 155, 69, 0.14);
}

.research { background: var(--surface); }

.research-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.research-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper);
}

.research-card > img {
  width: 100%;
  aspect-ratio: 16 / 8.7;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.02);
}

.research-body { padding: 27px; }

.research-type {
  margin-bottom: 11px;
  color: var(--cyan-dark);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.research-body h3 {
  margin-bottom: 11px;
  color: var(--ink);
  font-size: 22px;
  letter-spacing: -0.025em;
  line-height: 1.25;
}

.research-body > p:not(.research-type) { margin-bottom: 20px; color: var(--muted); font-size: 14px; }
.research-body a, .status-text { color: var(--ink); font-size: 13px; font-weight: 800; text-decoration: none; }
.research-body a { border-bottom: 1px solid #aab5c0; }
.status-text { color: var(--muted); }

.credential-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 60px;
}

.certifications {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.cert-card {
  min-height: 165px;
  display: flex;
  align-items: center;
  gap: 19px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.cert-card img {
  width: 76px;
  height: 76px;
  flex: 0 0 auto;
  object-fit: contain;
}

.cert-card p {
  margin-bottom: 4px;
  color: var(--cyan-dark);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.cert-card h3 { margin-bottom: 8px; color: var(--ink); font-size: 16px; line-height: 1.35; }

.cert-card a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--cyan-dark);
  font-size: 12px;
  font-weight: 800;
  text-decoration: none;
}

.cert-card a:hover { text-decoration: underline; text-underline-offset: 3px; }

.education {
  padding: 32px;
  border-radius: var(--radius-md);
  background: var(--surface);
}

.education > .label { margin-bottom: 20px; }

.education article {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 14px;
  padding-block: 20px;
  border-top: 1px solid var(--line);
}

.education article:last-child { padding-bottom: 0; }
.education article > span { color: var(--gold); font-size: 12px; font-weight: 800; }
.education h3 { margin-bottom: 4px; color: var(--ink); font-size: 17px; line-height: 1.4; }
.education p { margin-bottom: 0; color: var(--muted); font-size: 13px; }

.contact { padding-top: 10px; padding-bottom: 112px; }

.contact-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 70px;
  align-items: center;
  padding: 58px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 80% 10%, rgba(11, 143, 168, 0.26), transparent 36%),
    var(--ink);
  color: var(--white);
}

.contact .eyebrow { color: #7bd2df; }

.contact h2 {
  max-width: 740px;
  margin-bottom: 17px;
  color: #ffffff;
  font-size: clamp(33px, 4vw, 49px);
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.contact p:last-child { max-width: 670px; margin-bottom: 0; color: #afbdcc; }
.site-footer { padding-block: 30px; border-top: 1px solid var(--line); }
.site-footer .shell { display: flex; justify-content: space-between; gap: 30px; }
.site-footer p { margin-bottom: 0; color: var(--muted); font-size: 12px; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }

@media (max-width: 980px) {
  .section { padding-block: 86px; }
  nav { display: none; }
  .nav-cta { margin-left: auto; }
  .hero { grid-template-columns: 1fr; gap: 56px; min-height: auto; padding-block: 80px 90px; }
  .profile-card { max-width: 650px; }
  .split-heading, .intro-grid, .credential-layout { grid-template-columns: 1fr; gap: 40px; }
  .split-heading > p { max-width: 700px; }
  .research-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact { padding-top: 0; padding-bottom: 86px; }
  .contact-inner { grid-template-columns: 1fr; gap: 30px; }
  .button-light { justify-self: start; }
}

@media (max-width: 680px) {
  .shell { width: min(calc(100% - 32px), var(--shell)); }
  .section { padding-block: 70px; }
  .site-header .shell { width: min(calc(100% - 24px), var(--shell)); }
  .nav-wrap { min-height: 66px; }
  .hero { padding-block: 62px 74px; }
  .hero h1 { font-size: clamp(45px, 14vw, 65px); }
  .hero-lead { font-size: 17px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .button { width: 100%; }
  .hero-facts { grid-template-columns: 1fr; }
  .hero-facts li { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .hero-facts li + li { padding-left: 0; border-left: 0; }
  .profile-content { padding: 24px; }
  .section-heading { margin-bottom: 40px; }
  .section-heading h2 { font-size: 36px; }
  .expertise-grid, .research-grid, .certifications { grid-template-columns: 1fr; }
  .expertise-card { min-height: auto; padding: 28px; }
  .card-number { margin-bottom: 32px; }
  .timeline-item { grid-template-columns: 1fr; gap: 10px; }
  .timeline-item.current::before { left: 0; top: 0; }
  .cert-card { min-height: 140px; }
  .education { padding: 25px; }
  .contact { padding-bottom: 70px; }
  .contact-inner { padding: 34px 25px; }
  .site-footer .shell { flex-direction: column; gap: 7px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}