:root {
  --ink: #17191c;
  --ink-2: #41464d;
  --ink-3: #7a828d;
  --line: #e7e9ed;
  --bg: #ffffff;
  --accent: #1f4fd8;
  --accent-dark: #163da9;
  --accent-soft: #f1f5ff;
  --warm: #9a6a08;
  --warm-soft: #fff8e8;
  --maxw: 760px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 68px;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  width: min(100%, var(--maxw));
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: var(--accent);
  text-decoration: none;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(31, 79, 216, 0.28);
  outline-offset: 3px;
  border-radius: 3px;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  transform: translateY(-160%);
  padding: 7px 12px;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
}

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

/* Navigation */
nav {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
}

nav .wrap {
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: 54px;
  font-size: 14px;
}

nav a {
  color: var(--ink-3);
  white-space: nowrap;
}

nav a:hover {
  color: var(--accent);
  text-decoration: none;
}

nav .me {
  margin-right: auto;
  color: var(--ink);
  font-size: 15px;
  font-weight: 720;
}

.navblog {
  color: var(--accent);
  font-weight: 620;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 2px 10px;
  border: 1px solid #d7deef;
  border-radius: 999px;
  color: var(--accent);
  font-weight: 650;
}

.lang-switch:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* Hero */
header {
  padding: 58px 0 10px;
}

.top {
  display: flex;
  align-items: flex-start;
  gap: 30px;
  margin-bottom: 28px;
}

.top-copy {
  flex: 1;
  min-width: 0;
}

h1 {
  font-size: clamp(28px, 5vw, 34px);
  font-weight: 750;
  letter-spacing: 0.2px;
  line-height: 1.2;
}

.alt-name {
  margin-left: 9px;
  color: var(--ink-3);
  font-size: 17px;
  font-weight: 450;
  letter-spacing: 0.4px;
}

.affiliation {
  margin-top: 9px;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.65;
}

.photo {
  width: 108px;
  height: 136px;
  flex: none;
  border: 1px solid var(--line);
  border-radius: 9px;
  object-fit: cover;
  object-position: center 15%;
  filter: saturate(0.96);
}

.bio {
  max-width: 72ch;
}

.bio p {
  margin-top: 13px;
  color: var(--ink-2);
}

.bio .lead {
  color: var(--ink);
  font-size: 17px;
  line-height: 1.72;
}

.bio strong,
.theme strong,
.work strong,
.pub-note strong,
.kv strong {
  color: var(--ink);
  font-weight: 650;
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin-top: 21px;
  color: var(--ink-3);
  font-size: 14px;
}

.sep {
  margin: 0 4px;
  color: #cbd0d7;
}

/* Sections */
main section {
  padding-top: 46px;
}

h2 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 20px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
  font-size: 18px;
  font-weight: 740;
  letter-spacing: 0.2px;
}

.section-kicker {
  color: var(--ink-3);
  font-size: 11.5px;
  font-weight: 620;
  letter-spacing: 1.45px;
  text-transform: uppercase;
}

.section-intro {
  max-width: 68ch;
  margin: -5px 0 20px;
  color: var(--ink-3);
  font-size: 14.5px;
}

/* Research */
.theme {
  margin-bottom: 27px;
}

.theme h3 {
  margin-bottom: 6px;
  font-size: 16.5px;
  font-weight: 710;
  line-height: 1.5;
}

.theme .number {
  margin-right: 8px;
  color: var(--ink-3);
  font-weight: 520;
  font-variant-numeric: tabular-nums;
}

.theme p {
  color: var(--ink-2);
  font-size: 15.5px;
}

.work-link {
  color: var(--accent);
  font-weight: 650;
  white-space: nowrap;
}

.work-link.no-link {
  border-bottom: 1px dotted var(--ink-3);
  color: var(--ink);
  cursor: default;
}

/* Experience */
.job {
  margin-bottom: 30px;
}

.job-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.job-org {
  font-size: 16px;
  font-weight: 720;
}

.job-org span {
  color: var(--ink-2);
  font-size: 15px;
  font-weight: 430;
}

.date {
  color: var(--ink-3);
  font-size: 13.5px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.job-role {
  margin: 1px 0 10px;
  color: var(--ink-3);
  font-size: 14px;
}

.work {
  margin-top: 14px;
  padding-left: 17px;
  border-left: 2px solid var(--line);
}

.work-title {
  font-size: 15.5px;
  font-weight: 710;
}

.role-badge,
.status-badge {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 7px;
  border-radius: 4px;
  font-size: 11.5px;
  font-weight: 680;
  letter-spacing: 0.2px;
  vertical-align: 1px;
}

.role-badge {
  background: var(--warm-soft);
  color: var(--warm);
}

.status-badge {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.work p {
  margin-top: 5px;
  color: var(--ink-2);
  font-size: 15px;
}

.metric {
  color: var(--ink);
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

code {
  padding: 1px 5px;
  border-radius: 4px;
  background: #f4f5f7;
  color: #465267;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
}

/* Education and publications */
.education-item {
  padding: 9px 0 12px;
}

.education-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.school {
  font-size: 15.5px;
  font-weight: 710;
}

.degree {
  color: var(--ink-2);
  font-size: 14.5px;
}

.honors {
  margin-top: 3px;
  color: var(--ink-3);
  font-size: 14px;
}

.honors strong {
  color: var(--warm);
  font-weight: 650;
}

.year-label {
  margin: 23px 0 3px;
  padding-top: 8px;
  color: var(--ink-3);
  font-size: 12.5px;
  font-weight: 720;
  letter-spacing: 0.85px;
  text-transform: uppercase;
}

.publication {
  padding: 13px 0;
  border-bottom: 1px solid #f0f1f3;
}

.publication:last-child {
  border-bottom: 0;
}

.pub-title {
  font-size: 15px;
  font-weight: 650;
  line-height: 1.55;
}

.pub-authors {
  margin-top: 3px;
  color: var(--ink-3);
  font-size: 13.5px;
}

.pub-authors .me {
  color: var(--ink);
  font-weight: 650;
}

.pub-venue {
  margin-top: 2px;
  color: var(--ink-2);
  font-size: 13.5px;
}

.venue {
  color: var(--ink);
  font-weight: 650;
}

.pub-note {
  margin-top: 6px;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.68;
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin-top: 6px;
  font-size: 13px;
}

.compact-publications .publication {
  padding: 10px 0;
}

/* Service */
.kv {
  display: flex;
  gap: 14px;
  padding: 7px 0;
  flex-wrap: wrap;
  font-size: 15px;
}

.kv-key {
  width: 96px;
  flex: none;
  color: var(--ink-3);
  font-size: 13.5px;
}

.kv-value {
  min-width: 210px;
  flex: 1;
  color: var(--ink-2);
}

footer {
  margin-top: 48px;
  padding: 34px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 13px;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 700px) {
  body {
    font-size: 15.5px;
  }

  nav .wrap {
    gap: 12px;
  }

  nav a:not(.me):not(.lang-switch) {
    display: none;
  }

  header {
    padding-top: 42px;
  }

  .top {
    gap: 18px;
  }

  .photo {
    width: 84px;
    height: 108px;
  }

  .alt-name {
    display: block;
    margin: 3px 0 0;
  }

  .kv-key {
    width: 100%;
    margin-bottom: -7px;
  }
}

@media (max-width: 430px) {
  .wrap {
    padding-right: 19px;
    padding-left: 19px;
  }

  .top {
    gap: 14px;
  }

  .photo {
    width: 76px;
    height: 98px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media print {
  nav,
  .skip-link {
    display: none;
  }

  body {
    font-size: 10.5pt;
  }

  main section {
    padding-top: 18px;
  }

  .publication,
  .theme,
  .job,
  .education-item {
    break-inside: avoid;
  }
}