:root{
  --ink:#1B1D1E;
  --ink-soft:#4E4B43;
  --paper:#ECE7D9;
  --paper-dim:#E2DCC9;
  --line:#C8BFA4;
  --line-on-ink:#3B3C39;
  --rubric:#6B2C41;
  --signal:#3F5C72;
  --serif: 'Source Serif 4', Georgia, serif;
  --sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --rail-w: 15rem;
  --max-w: 46rem;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--serif);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;}
::selection{background:var(--rubric); color:var(--paper);}

h1,h2,h3{ font-weight:600; line-height:1.15; margin:0; }

.label{
  font-family:var(--sans); font-size:0.88rem; letter-spacing:0.02em; color:var(--ink-soft);
}

/* ---------- layout shell ---------- */
.row{
  display:grid;
  grid-template-columns: var(--rail-w) 1fr;
  gap:2.5rem;
  max-width:64rem;
  margin:0 auto;
  padding:0 1.75rem;
}
.rail{ padding-top:0.35rem; border-right:1px solid var(--line); }
.rail-sticky{ position:sticky; top:4.9rem; align-self:start; }
.rail-dark{ border-right:1px solid var(--line-on-ink); }
.content{ max-width:var(--max-w); }

@media (max-width:820px){
  .row{ grid-template-columns:1fr; gap:1rem; }
  .rail{ border-right:none; padding-top:0; }
  .rail-sticky{ position:static; }
}

/* ---------- header ---------- */
header.site-header{
  position:sticky; top:0; z-index:40;
  background:rgba(236,231,217,0.92);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
}
.nav-row{
  max-width:64rem; margin:0 auto; padding:0 1.75rem;
  display:flex; align-items:center; justify-content:space-between;
  height:4.1rem;
}
.nav-name{ font-family:var(--serif); font-weight:600; font-size:1.3rem; text-decoration:none; }
nav.links{ font-family:var(--sans); font-size:1.02rem; display:flex; gap:1.8rem; }
nav.links a{ text-decoration:none; border-bottom:1px solid transparent; }
nav.links a:hover, nav.links a.current{ border-bottom-color:var(--ink); }

@media (max-width:640px){ nav.links{ display:none; } }

/* ---------- hero ---------- */
.hero{ background:var(--ink); color:var(--paper); padding:4.5rem 0 4rem; }
.hero .row{ grid-template-columns: 19rem 1fr; }
.hero .rail.rail-dark{ display:flex; align-items:center; justify-content:flex-start; height:100%; }
.hero-tag{
  display:block; font-family:var(--sans); font-size:0.82rem; color:#D8D2BE;
  padding:0.55rem 0; border-top:1px solid var(--line-on-ink);
}
.hero-tag:first-of-type{ border-top:none; }
.hero-tag b{ color:var(--paper); font-weight:500; display:block; }
.hero h1{ font-size:clamp(1.9rem, 4vw, 2.7rem); font-weight:500; letter-spacing:-0.005em; }
.hero p.sub{ font-family:var(--sans); font-size:1.05rem; color:#D8D2BE; max-width:38rem; margin-top:1.3rem; line-height:1.55; }
.hero .ctas{ margin-top:2.2rem; display:flex; gap:1.8rem; font-family:var(--sans); font-size:0.92rem; }
.hero .ctas a{ text-decoration:none; padding-bottom:3px; border-bottom:1px solid #6E6B60; }
.hero .ctas a.primary{ border-bottom-color:var(--rubric); }
.signal-svg{ margin-top:2.6rem; opacity:0.9; }
.hero-graphic{ width:80%; max-width:none; height:auto; display:block; margin-left:-1.2rem; }
@media (max-width:820px){
  .hero .rail.rail-dark{ display:block; height:auto; text-align:center; }
  .hero-graphic{ width:100%; max-width:15rem; margin:0.5rem auto 1.5rem; }
}

/* ---------- photo banner (signature photographic moment) ---------- */
.photo-banner{ position:relative; height:min(58vh, 440px); overflow:hidden; background:var(--ink); }
.photo-banner img{
  width:100%; height:100%; object-fit:cover; object-position:center 22%;
  filter:grayscale(0.88) contrast(1.08) brightness(0.92);
  display:block;
}
.photo-banner::after{
  content:''; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(27,29,30,0.05) 40%, rgba(27,29,30,0.72) 100%);
}
.photo-caption{
  position:absolute; left:0; right:0; bottom:0;
  max-width:64rem; margin:0 auto; padding:1.1rem 1.75rem 1.3rem;
  font-family:var(--sans); font-size:0.82rem; color:#D8D2BE;
}

/* ---------- about portrait ---------- */
.about-portrait{
  float:right; width:11rem; margin:0 0 1rem 1.75rem;
  border:1px solid var(--line);
}
.about-portrait img{ width:100%; height:auto; display:block; }
@media (max-width:560px){ .about-portrait{ float:none; width:9rem; margin:0 0 1.2rem; } }

/* ---------- generic section ---------- */
section{ padding:3.6rem 0; }
section + section{ border-top:1px solid var(--line); }
.eyebrow{ font-family:var(--sans); font-size:0.88rem; color:var(--ink-soft); margin-bottom:0.6rem; }
h2.section-title{ font-size:1.5rem; font-weight:600; margin-bottom:1.4rem; }
p{ margin:0 0 1rem; }
p:last-child{ margin-bottom:0; }

/* ---------- about timeline rail ---------- */
.timeline-item{ padding:0.6rem 0; border-top:1px solid var(--line); font-family:var(--sans); font-size:0.82rem; color:var(--ink-soft); }
.timeline-item:first-child{ border-top:none; }
.timeline-item b{ display:block; color:var(--ink); font-weight:500; margin-top:0.15rem; }

/* ---------- work: two tracks ---------- */
.tracks{ display:grid; grid-template-columns:1fr 1fr; gap:2.5rem; }
@media (max-width:820px){ .tracks{ grid-template-columns:1fr; } }
.track-heading{ font-family:var(--sans); font-size:0.78rem; font-weight:600; letter-spacing:0.01em; margin-bottom:1.1rem; padding-bottom:0.6rem; }
.track-academia .track-heading{ border-bottom:2px solid var(--rubric); color:var(--rubric); }
.track-tech .track-heading{ border-bottom:2px solid var(--signal); color:var(--signal); }
.item{ padding:1.1rem 0 1.1rem 0.95rem; border-left:2px solid var(--line); margin-bottom:0.15rem; }
.track-academia .item{ border-left-color:#D8C3BB; }
.track-tech .item{ border-left-color:#C2D2CD; }
.item h3{ font-size:1.02rem; font-weight:600; margin-bottom:0.35rem; }
.item p{ font-size:0.94rem; color:var(--ink-soft); margin:0; }
.item .item-link{ display:inline-block; margin-top:0.5rem; font-family:var(--sans); font-size:0.82rem; text-decoration:none; border-bottom:1px solid currentColor; }
.track-academia .item-link{ color:var(--rubric); }
.track-tech .item-link{ color:var(--signal); }

/* ---------- writing / publication lists ---------- */
.pub-group + .pub-group{ margin-top:2.2rem; }
.pub-group-title{ font-family:var(--sans); font-size:0.78rem; font-weight:600; color:var(--ink-soft); margin-bottom:0.8rem; text-transform:none; }
.pub{
  display:grid; grid-template-columns: 8.5rem 1fr; gap:1.2rem;
  padding:1rem 0; border-top:1px solid var(--line);
}
.pub:first-child{ border-top:none; }
.pub .tag{ font-family:var(--sans); font-size:0.76rem; color:var(--ink-soft); align-self:start; padding-top:0.2rem; }
.pub h3{ font-size:1rem; font-weight:600; }
.pub h3 a{ text-decoration:none; border-bottom:1px solid transparent; }
.pub h3 a:hover{ border-bottom-color:var(--ink); }
.pub .meta{ font-family:var(--sans); font-size:0.85rem; color:var(--ink-soft); margin-top:0.3rem; }
@media (max-width:560px){ .pub{ grid-template-columns:1fr; gap:0.3rem; } }

.pub-simple{ padding:0.9rem 0; border-top:1px solid var(--line); }
.pub-simple:first-child{ border-top:none; }
.pub-simple h3{ font-size:1rem; font-weight:600; }
.pub-simple h3 a{ text-decoration:none; border-bottom:1px solid transparent; }
.pub-simple h3 a:hover{ border-bottom-color:var(--ink); }
.pub-simple .meta{ font-family:var(--sans); font-size:0.85rem; color:var(--ink-soft); margin-top:0.3rem; }

/* ---------- press strip ---------- */
.press-line{ font-family:var(--sans); font-size:0.92rem; color:var(--ink-soft); }
.press-marks{ margin-top:1rem; display:flex; flex-wrap:wrap; gap:0.5rem 1.6rem; font-family:var(--serif); font-weight:600; font-size:0.98rem; color:var(--ink); }

/* ---------- contact / footer ---------- */
footer#contact{ background:var(--paper-dim); border-top:1px solid var(--line); padding:3.6rem 0 2.4rem; }
.contact-links{ font-family:var(--sans); font-size:0.98rem; }
.contact-links a{ display:inline-block; text-decoration:none; border-bottom:1px solid var(--ink); }
.contact-list{ list-style:none; padding:0; margin:1.4rem 0 0; display:flex; flex-direction:column; gap:0.6rem; font-family:var(--sans); font-size:0.92rem; }
.fineprint{ font-family:var(--sans); font-size:0.76rem; color:var(--ink-soft); margin-top:2.6rem; }

.contact-form{ max-width:26rem; margin-top:0.4rem; font-family:var(--sans); }
.form-row{ margin-bottom:1.1rem; display:flex; flex-direction:column; gap:0.4rem; }
.form-row label{ font-size:0.8rem; color:var(--ink-soft); }
.form-row input, .form-row textarea{
  font-family:var(--sans); font-size:0.95rem; color:var(--ink);
  background:var(--paper); border:1px solid var(--line); padding:0.6rem 0.75rem;
  border-radius:0;
}
.form-row textarea{ resize:vertical; min-height:6.5rem; }
.form-submit{
  font-family:var(--sans); font-size:0.88rem; font-weight:500;
  background:var(--ink); color:var(--paper); border:1px solid var(--ink);
  padding:0.65rem 1.4rem; cursor:pointer; border-radius:0;
}
.form-submit:hover{ background:var(--rubric); border-color:var(--rubric); }
.form-status{ font-family:var(--sans); font-size:0.85rem; margin-top:0.9rem; min-height:1.1em; }
.form-status.success{ color:var(--signal); }
.form-status.error{ color:var(--rubric); }

/* ---------- page header (non-hero pages) ---------- */
.page-header{ padding:3.2rem 0 2.6rem; border-bottom:1px solid var(--line); }
.page-header h1{ font-size:clamp(1.7rem, 3.4vw, 2.2rem); font-weight:500; }
.page-header p.sub{ font-family:var(--sans); font-size:1rem; color:var(--ink-soft); max-width:36rem; margin-top:0.9rem; }
.back-link{ font-family:var(--sans); font-size:0.85rem; text-decoration:none; border-bottom:1px solid var(--ink); }

/* ---------- reduced motion / focus ---------- */
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }
a:focus-visible, button:focus-visible{ outline:2px solid var(--rubric); outline-offset:2px; }

.fade-in{ opacity:0; animation:fadeIn 0.9s ease forwards; }
.fade-in.d2{ animation-delay:0.12s; }
.fade-in.d3{ animation-delay:0.24s; }
@keyframes fadeIn{ to{ opacity:1; } }
@media (prefers-reduced-motion: reduce){ .fade-in{ opacity:1; animation:none; } }