:root {
  --ink: #1d2634;
  --muted: #65707f;
  --blue: #284f78;
  --line: #d8dde4;
  --paper: #ffffff;
  --soft: #f6f7f9;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "IBM Plex Sans", sans-serif;
  line-height: 1.68;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }

nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--line);
}
nav .wrap {
  min-height: 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.nav-name {
  color: var(--ink);
  font-family: "Source Serif 4", serif;
  font-size: 1.08rem;
  font-weight: 600;
}
.nav-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--ink);
  font-size: .8rem;
  font-weight: 500;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 42px;
  align-items: center;
  padding: 42px 0 32px;
}
.eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--blue);
}
h1, h2, h3, h4 { font-family: "Source Serif 4", serif; }
h1 {
  margin: 10px 0 8px;
  font-size: clamp(2.75rem, 5.2vw, 4.35rem);
  line-height: .94;
  letter-spacing: -.035em;
  font-weight: 500;
}
.role { margin: 0 0 20px; color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 20px; }
.tags span {
  padding: 4px 9px;
  border: 1px solid var(--line);
  font-size: .73rem;
  color: var(--muted);
}
.cv-btn {
  display: inline-block;
  font-size: .83rem;
  font-weight: 600;
}
.hero-photo {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center 18%;
  border: 1px solid var(--line);
}

.fracture { height: 18px; margin: 0 0 8px; }
.fracture svg { width: 100%; height: 100%; }
.fracture path {
  fill: none;
  stroke: var(--blue);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

section, footer { padding: 38px 0; border-top: 1px solid var(--line); }
.sec-head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 17px; }
.sec-num {
  font-family: "IBM Plex Mono", monospace;
  color: var(--blue);
  font-size: .72rem;
}
.sec-head h2 {
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  line-height: 1;
  font-weight: 500;
}

.about-text {
  max-width: 760px;
  font-size: 1.02rem;
}
.about-text p:first-child { margin-top: 0; }
.about-text p:last-child { margin-bottom: 0; }

.research-intro {
  margin: -2px 0 18px;
  font-family: "Source Serif 4", serif;
  font-size: 1.15rem;
  color: var(--muted);
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.research-item {
  min-height: 150px;
  padding: 18px 20px 17px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 8px 20px rgba(29,38,52,.055), 0 2px 5px rgba(29,38,52,.035);
  transform: translateY(0);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.research-item:hover {
  transform: translateY(-3px);
  border-color: #c9d1db;
  box-shadow: 0 12px 26px rgba(29,38,52,.075), 0 3px 7px rgba(29,38,52,.045);
}
.research-item h3 {
  margin: 0 0 10px;
  font-size: 1.38rem;
  font-weight: 500;
}
.research-item p { margin: 0; color: var(--muted); }

.current-list { border-top: 1px solid var(--line); }
.current-list article {
  display: grid;
  grid-template-columns: .85fr 1.4fr;
  gap: 32px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}
.current-list h3 {
  margin: 0;
  font-size: 1.34rem;
  font-weight: 500;
}
.current-list p { margin: 0; color: var(--muted); }

.pub { padding: 10px 0; border-bottom: 1px solid var(--line); }
.pub:first-of-type { border-top: 1px solid var(--line); }
.pub-title {
  margin: 0 0 4px;
  font-family: "Source Serif 4", serif;
  font-size: 1.2rem;
  color: var(--blue);
}
.pub-meta { margin: 0; color: var(--muted); font-size: .9rem; }
.venue { color: var(--blue); }
.pub-note { margin-top: 18px; color: var(--muted); }

.plain { margin: 0; padding-left: 20px; }
.plain li { margin-bottom: 7px; }
.course-list { padding-left: 0; list-style: none; border-top: 1px solid var(--line); }
.course-list li {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin: 0;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.course-list a { font-size: .85rem; }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 44px;
}
.contact-grid h4 { margin-top: 0; font-size: 1.25rem; }
.contact-grid p { margin: 4px 0; color: var(--muted); }
.copyright {
  margin-top: 34px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-family: "IBM Plex Mono", monospace;
  font-size: .7rem;
  color: var(--muted);
}

@media (max-width: 820px) {
  .nav-links { display: none; }
  .hero { grid-template-columns: 1fr; gap: 38px; }
  .hero-photo { max-width: 230px; }
  .research-grid, .contact-grid { grid-template-columns: 1fr; }
  .current-list article { grid-template-columns: 1fr; gap: 8px; }
}

@media (max-width: 560px) {
  .wrap { width: min(calc(100% - 26px), var(--max)); }
  .hero { padding: 42px 0 34px; }
  h1 { font-size: 3.35rem; }
  section, footer { padding: 34px 0; }
  .course-list li { flex-direction: column; gap: 4px; }
  .research-item { min-height: 0; }
}