:root {
  --ink: #172327;
  --ink-soft: #46565a;
  --paper: #f7f3ea;
  --paper-deep: #e9e2d5;
  --white: #fffdfa;
  --teal: #0c756d;
  --teal-dark: #084d49;
  --teal-pale: #d9eee9;
  --orange: #e76f3c;
  --line: rgba(23, 35, 39, .17);
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shadow: 0 24px 72px rgba(17, 42, 43, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
}
body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(rgba(23, 35, 39, .052) .55px, transparent .55px);
  background-size: 7px 7px;
  content: "";
  pointer-events: none;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--ink);
  color: #fff;
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }
.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;
}
.shell { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.section { padding: 112px 0; }
.muted { color: var(--ink-soft); }
.eyebrow {
  margin: 0 0 20px;
  color: var(--teal);
  font-size: .73rem;
  font-weight: 800;
  letter-spacing: .145em;
  text-transform: uppercase;
}
.eyebrow.light { color: #89d2c5; }
.section-label {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 26px;
  color: var(--teal);
  font-size: .69rem;
  font-weight: 800;
  letter-spacing: .145em;
  text-transform: uppercase;
}
.section-label::after { width: 48px; height: 1px; background: currentColor; content: ""; }
.section-label.light { color: #89d2c5; }
.display,
.section-title,
.page-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -.045em;
  line-height: 1;
}
.section-title { font-size: clamp(2.8rem, 5vw, 4.8rem); }
.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 0 23px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: .82rem;
  font-weight: 800;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button.primary { background: var(--ink); color: var(--white); }
.button.primary:hover { background: var(--teal-dark); }
.button.secondary { border-color: var(--line); background: rgba(255, 253, 250, .42); }
.arrow { margin-left: 4px; }
.text-link {
  padding-bottom: 3px;
  border-bottom: 1px solid currentColor;
  font-size: .8rem;
  font-weight: 800;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  min-height: 72px;
  border-bottom: 1px solid rgba(23, 35, 39, .11);
  background: rgba(247, 243, 234, .92);
  backdrop-filter: blur(18px);
}
.header-inner { display: flex; min-height: 72px; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: .92rem; font-weight: 800; }
.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--serif);
  font-size: .78rem;
  font-style: italic;
}
.site-nav { display: flex; align-items: center; gap: 25px; color: var(--ink-soft); font-size: .81rem; font-weight: 750; }
.site-nav a { position: relative; padding: 9px 0; }
.site-nav a:not(.contact-link)::after {
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 1px;
  background: var(--teal);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .18s ease;
}
.site-nav a:hover::after, .site-nav a:focus-visible::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.contact-link { padding: 7px 15px !important; border: 1px solid var(--ink); border-radius: 99px; color: var(--ink); }
.contact-link:hover { background: var(--ink); color: var(--paper); }
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 50%;
  background: var(--ink);
  cursor: pointer;
}
.menu-toggle span:not(.sr-only) { display: block; width: 16px; height: 1px; margin: 5px auto; background: var(--paper); }

/* Home hero */
.hero {
  display: grid;
  min-height: calc(100vh - 72px);
  align-items: center;
  grid-template-columns: minmax(0, 1.2fr) minmax(330px, .8fr);
  gap: 76px;
  padding-top: 68px;
  padding-bottom: 70px;
}
.hero .display { max-width: 760px; font-size: clamp(4.1rem, 8vw, 7.7rem); }
.hero .display em { color: var(--teal); font-weight: 400; }
.hero-intro { max-width: 660px; margin: 34px 0 0; color: var(--ink-soft); font-size: clamp(1.05rem, 1.6vw, 1.25rem); line-height: 1.72; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero-profile { position: relative; display: flex; min-height: 0; align-self: start; flex-direction: column; align-items: flex-end; justify-content: flex-start; gap: 20px; padding-top: 22px; }
.hero-profile::before { display: none; }
.portrait {
  position: relative;
  z-index: 1;
  width: 308px;
  height: 388px;
  overflow: hidden;
  border-radius: 154px 154px 22px 22px;
  background: var(--paper-deep);
  box-shadow: var(--shadow);
}
.portrait img { width: 100%; height: 100%; object-fit: cover; object-position: center; filter: saturate(.86) contrast(1.02); }
.portrait::after { position: absolute; right: 20px; bottom: 20px; width: 14px; height: 14px; border: 5px solid var(--white); border-radius: 50%; background: var(--orange); content: ""; }
.portrait-graphic {
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 77% 20%, rgba(255,255,255,.18) 0 7%, transparent 7.3%),
    linear-gradient(145deg, #0d7a71 0%, #0a5b56 45%, #172327 100%);
  color: var(--white);
}
.portrait-graphic::before {
  position: absolute;
  width: 310px;
  height: 310px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 50%;
  box-shadow: 0 0 0 42px rgba(255,255,255,.045), 0 0 0 84px rgba(255,255,255,.03);
  content: "";
}
.portrait-initials { position: relative; font-family: var(--serif); font-size: 7.5rem; font-style: italic; letter-spacing: -.12em; line-height: 1; transform: translateX(-.08em); }
.portrait-caption { position: absolute; right: 32px; bottom: 34px; left: 32px; font-size: .65rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.profile-card { width: 308px; padding: 18px 20px; border: 1px solid var(--line); border-left: 3px solid var(--orange); background: var(--white); box-shadow: 0 10px 28px rgba(23,35,39,.08); }
.profile-card small { display: block; margin-bottom: 7px; color: var(--teal); font-size: .68rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.profile-card a { font-family: var(--serif); font-size: 1rem; line-height: 1.45; }
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,253,250,.56); }
.metric { display: flex; min-height: 116px; align-items: center; gap: 14px; padding: 24px 30px; border-right: 1px solid var(--line); }
.metric:last-child { border-right: 0; }
.metric strong { flex: none; color: var(--teal); font-family: var(--serif); font-size: 1.7rem; font-weight: 400; }
.metric span { max-width: 170px; color: var(--ink-soft); font-size: .73rem; line-height: 1.45; }

/* Content */
.two-col { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: 96px; }
.prose { color: var(--ink-soft); font-size: 1.01rem; line-height: 1.84; }
.prose p { margin: 0 0 23px; }
.dark-section { background: var(--ink); color: var(--white); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 60px; margin-bottom: 55px; }
.section-head > p { max-width: 455px; margin: 0 0 5px; color: #b7c1c0; }
.research-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(255,255,255,.17); border-bottom: 1px solid rgba(255,255,255,.17); }
.research-card { min-height: 400px; padding: 33px 29px; border-right: 1px solid rgba(255,255,255,.17); }
.research-card:last-child { border-right: 0; }
.card-index { color: #89d2c5; font-family: var(--serif); font-style: italic; }
.research-card h3 { max-width: 270px; margin: 65px 0 18px; font-family: var(--serif); font-size: 1.95rem; font-weight: 400; letter-spacing: -.03em; line-height: 1.15; }
.research-card p { color: #b7c1c0; font-size: .9rem; line-height: 1.75; }
.tags { display: flex; flex-wrap: wrap; gap: 7px; padding: 0; margin: 26px 0 0; list-style: none; }
.tags li { padding: 4px 9px; border: 1px solid rgba(137,210,197,.36); border-radius: 99px; color: #c3e5df; font-size: .66rem; }
.feature-strip { display: grid; grid-template-columns: 140px 1fr auto; align-items: center; gap: 35px; margin-top: 52px; padding: 28px 0 0 28px; border-top: 1px solid rgba(255,255,255,.17); border-left: 3px solid var(--orange); }
.feature-strip small { color: #89d2c5; font-size: .67rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.feature-strip h3 { margin: 0; font-family: var(--serif); font-size: clamp(1.7rem, 3vw, 2.6rem); font-weight: 400; line-height: 1.18; }
.feature-strip p { max-width: 275px; margin: 0; color: #aebbb9; font-size: .82rem; }
.output-list { border-top: 1px solid var(--ink); }
.output-row { display: grid; grid-template-columns: 90px 1fr auto; gap: 30px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.output-row time { color: var(--teal); font-family: var(--serif); font-size: 1.35rem; font-style: italic; }
.output-row h3 { margin: 0 0 7px; font-family: var(--serif); font-size: 1.5rem; font-weight: 400; line-height: 1.25; }
.output-row p { margin: 0; color: var(--ink-soft); font-size: .82rem; }
.output-row > a { align-self: center; }
.course-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: rgba(255,255,255,.17); border: 1px solid rgba(255,255,255,.17); }
.course { min-height: 170px; padding: 26px; background: var(--ink); }
.course span { color: #89d2c5; font-family: var(--serif); font-style: italic; }
.course h3 { margin: 34px 0 6px; font-family: var(--serif); font-size: 1.35rem; font-weight: 400; }
.course p { margin: 0; color: #8fa09e; font-size: .78rem; }
.education-list { border-top: 1px solid var(--line); }
.education-item { display: grid; grid-template-columns: 125px 1fr; gap: 30px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.education-item time { color: var(--teal); font-size: .74rem; font-weight: 800; }
.education-item h3 { margin: -5px 0 4px; font-family: var(--serif); font-size: 1.3rem; font-weight: 400; }
.education-item p { margin: 0; color: var(--ink-soft); font-size: .83rem; }
.profile-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.profile-chips a { padding: 8px 13px; border: 1px solid var(--line); border-radius: 99px; background: rgba(255,253,250,.4); font-size: .72rem; font-weight: 800; }
.profile-chips a:hover { border-color: var(--teal); color: var(--teal); }

/* Inner pages */
.page-hero { padding: 94px 0 72px; border-bottom: 1px solid var(--line); }
.page-hero-grid { display: grid; grid-template-columns: 1fr minmax(280px, 420px); gap: 70px; align-items: end; }
.page-title { max-width: 850px; font-size: clamp(4rem, 8vw, 7rem); }
.page-hero p { margin: 0 0 8px; color: var(--ink-soft); font-size: 1.02rem; line-height: 1.75; }
.subnav { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 32px; }
.subnav a { padding: 7px 12px; border: 1px solid var(--line); border-radius: 99px; font-size: .7rem; font-weight: 800; }
.subnav a:hover { background: var(--ink); color: var(--white); }
.lead-grid { display: grid; grid-template-columns: 270px 1fr; gap: 80px; }
.lead-grid > aside { color: var(--teal); font-family: var(--serif); font-size: 1.5rem; line-height: 1.35; }
.lead-grid .prose { max-width: 790px; }
.project-list { border-top: 1px solid var(--line); }
.project { display: grid; grid-template-columns: 130px 1fr 260px; gap: 34px; padding: 38px 0; border-bottom: 1px solid var(--line); }
.project time { color: var(--teal); font-family: var(--serif); font-style: italic; }
.project h2 { margin: -6px 0 10px; font-family: var(--serif); font-size: clamp(1.7rem, 3vw, 2.5rem); font-weight: 400; line-height: 1.16; }
.project p { margin: 0; color: var(--ink-soft); font-size: .88rem; }
.project-meta { padding-left: 24px; border-left: 1px solid var(--line); }
.project-meta dt { color: var(--teal); font-size: .65rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.project-meta dd { margin: 3px 0 14px; color: var(--ink-soft); font-size: .78rem; }

/* Publications */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.filters button { padding: 8px 14px; border: 1px solid var(--line); border-radius: 99px; background: transparent; color: var(--ink-soft); cursor: pointer; font-size: .72rem; font-weight: 800; }
.filters button.active { border-color: var(--ink); background: var(--ink); color: #fff; }
.publication-list { border-top: 1px solid var(--ink); }
.publication { display: grid; grid-template-columns: 95px 1fr; gap: 30px; padding: 34px 0 38px; border-bottom: 1px solid var(--line); }
.publication-year { color: var(--teal); font-family: var(--serif); font-size: 1.5rem; font-style: italic; }
.publication-meta { display: flex; flex-wrap: wrap; gap: 12px; color: var(--teal); font-size: .65rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.publication-meta span + span::before { margin-right: 12px; color: var(--line); content: "•"; }
.publication h2 { max-width: 900px; margin: 11px 0 10px; font-family: var(--serif); font-size: clamp(1.45rem, 2.7vw, 2.15rem); font-weight: 400; letter-spacing: -.025em; line-height: 1.2; }
.citation { max-width: 970px; margin: 0; color: var(--ink-soft); font-size: .83rem; line-height: 1.7; }
.publication-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 18px; }
.publication-actions a, .publication-actions button { padding: 0 0 3px; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--ink); cursor: pointer; font-size: .7rem; font-weight: 800; }
.publication-actions a:hover, .publication-actions button:hover { border-color: var(--teal); color: var(--teal); }
.is-hidden { display: none !important; }

/* Teaching & talks */
.teaching-philosophy { padding: 36px; border-left: 3px solid var(--orange); background: rgba(255,253,250,.52); }
.teaching-philosophy blockquote { margin: 0; font-family: var(--serif); font-size: clamp(1.7rem, 3.5vw, 2.7rem); line-height: 1.26; }
.teaching-philosophy p { margin: 20px 0 0; color: var(--ink-soft); }
.detail-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.detail-card { padding: 28px; border: 1px solid var(--line); background: rgba(255,253,250,.42); }
.detail-card .number { color: var(--teal); font-family: var(--serif); font-style: italic; }
.detail-card h2 { margin: 38px 0 10px; font-family: var(--serif); font-size: 1.55rem; font-weight: 400; }
.detail-card p { margin: 0; color: var(--ink-soft); font-size: .86rem; }
.talk-list { border-top: 1px solid var(--ink); }
.talk { display: grid; grid-template-columns: 95px 1fr; gap: 30px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.talk time { color: var(--teal); font-family: var(--serif); font-size: 1.25rem; font-style: italic; }
.talk h2 { margin: -4px 0 7px; font-family: var(--serif); font-size: 1.45rem; font-weight: 400; line-height: 1.28; }
.talk p { margin: 0; color: var(--ink-soft); font-size: .83rem; }
.compact-list { padding: 0; margin: 24px 0 0; list-style: none; color: var(--ink-soft); font-size: .82rem; line-height: 1.65; }
.compact-list li { padding: 9px 0; border-bottom: 1px solid var(--line); }
.compact-list li:last-child { border-bottom: 0; }
.experience-grid-second { border-top: 0; }
.service-card { min-height: 0; }
.service-card h3 { margin-top: 22px; }
.light-list { color: #b7c1c0; }
.light-list li { border-color: rgba(255,255,255,.14); }
.certification-grid .detail-card { padding-top: 32px; }
.certification-grid .compact-list { margin-top: 16px; }

/* Contact/footer */
.contact-band { background: var(--teal); color: #fff; }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr); gap: 90px; align-items: end; }
.contact-band .eyebrow { color: #c7e9e2; }
.contact-band .section-title { max-width: 760px; }
.email { display: flex; justify-content: space-between; gap: 18px; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.36); font-family: var(--serif); font-size: clamp(1rem, 2vw, 1.35rem); overflow-wrap: anywhere; }
.social-links { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 24px; }
.social-links a { color: #d5eee9; font-size: .72rem; font-weight: 800; }
.site-footer { padding: 27px 0; background: #111c1f; color: #aebcba; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; gap: 24px; font-size: .72rem; }
.footer-grid > div { display: flex; align-items: center; gap: 12px; }
.footer-grid p { margin: 0; }
.footer-grid .brand-mark { background: var(--teal); }

:focus-visible { outline: 3px solid var(--orange); outline-offset: 4px; }

@media (max-width: 1020px) {
  .site-nav { gap: 16px; }
  .hero { grid-template-columns: 1fr 335px; gap: 40px; }
  .hero-profile { transform: none; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(2) { border-right: 0; }
  .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .research-card { padding: 30px 20px; }
  .project { grid-template-columns: 110px 1fr; }
  .project-meta { grid-column: 2; padding: 20px 0 0; border-top: 1px solid var(--line); border-left: 0; }
}

@media (max-width: 820px) {
  .shell { width: min(100% - 32px, 690px); }
  .section { padding: 82px 0; }
  .site-header, .header-inner { min-height: 66px; }
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: 66px; right: 0; left: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 14px 20px 23px; border-bottom: 1px solid var(--line); background: var(--paper); box-shadow: 0 18px 35px rgba(23,35,39,.12); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 3px; border-bottom: 1px solid var(--line); }
  .contact-link { margin-top: 12px; text-align: center; }
  .hero { grid-template-columns: 1fr; gap: 16px; padding-top: 72px; padding-bottom: 78px; }
  .hero-profile { min-height: 0; align-items: flex-start; padding-top: 18px; transform: none; }
  .two-col, .contact-grid, .page-hero-grid, .lead-grid { grid-template-columns: 1fr; gap: 48px; }
  .section-head { display: block; }
  .section-head > p { margin-top: 22px; }
  .research-grid { grid-template-columns: 1fr; }
  .research-card { min-height: 0; padding: 32px 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.17); }
  .research-card:last-child { border-bottom: 0; }
  .research-card h3 { margin-top: 34px; }
  .feature-strip { grid-template-columns: 1fr; gap: 13px; }
  .output-row { grid-template-columns: 75px 1fr; }
  .output-row > a { grid-column: 2; justify-self: start; }
  .page-hero { padding: 76px 0 58px; }
  .project { grid-template-columns: 1fr; gap: 10px; }
  .project-meta { grid-column: 1; }
  .footer-grid { grid-template-columns: 1fr auto; }
  .footer-grid > p { display: none; }
}

@media (max-width: 560px) {
  .brand-name { display: none; }
  .hero .display { font-size: clamp(3.4rem, 18vw, 5rem); }
  .hero-intro { font-size: 1rem; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-profile { min-height: 0; margin: 0; padding-top: 10px; }
  .portrait { width: 264px; height: 335px; }
  .profile-card { width: 264px; }
  .metrics { grid-template-columns: 1fr; }
  .metric { min-height: 88px; border-right: 0; border-bottom: 1px solid var(--line); }
  .metric:last-child { border-bottom: 0; }
  .section-title { font-size: 2.8rem; }
  .course-grid, .detail-grid { grid-template-columns: 1fr; }
  .output-row, .publication, .talk { grid-template-columns: 1fr; gap: 9px; }
  .output-row > a { grid-column: 1; }
  .publication-year { font-size: 1.15rem; }
  .filters { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 5px; }
  .filters button { flex: none; }
  .education-item { grid-template-columns: 78px 1fr; gap: 15px; }
  .page-title { font-size: clamp(3.3rem, 17vw, 5rem); }
}

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