:root {
  --paper: #f3efe6;
  --paper-raised: #faf7f0;
  --ink: #1c1915;
  --ink-soft: #3d3832;
  --muted: #6b645b;
  --rule: #d4cbbd;
  --rule-strong: #b9ae9e;
  --harbor: #1b3a4b;
  --harbor-deep: #122832;
  --clay: #9c4a32;
  --clay-soft: #e8d2c6;
  --tag-bg: #e7efe8;
  --tag-ink: #2a4a38;
  --shadow: 0 24px 60px rgba(28, 25, 21, 0.08);
  --serif: "Fraunces", "Noto Serif SC", "Songti SC", Georgia, serif;
  --sans: "Source Sans 3", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --page-max: 980px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(27, 58, 75, 0.08), transparent 55%),
    radial-gradient(900px 420px at 100% 0%, rgba(156, 74, 50, 0.07), transparent 50%),
    var(--paper);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  letter-spacing: 0.01em;
}

body[data-lang="zh"] {
  font-size: 16px;
  line-height: 1.75;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 10;
  padding: 8px 12px;
  background: var(--harbor);
  color: #fff;
}

.skip-link:focus {
  top: 12px;
}

.page {
  width: min(var(--page-max), calc(100% - 32px));
  margin: 36px auto 64px;
  padding: 40px 48px 36px;
  background: var(--paper-raised);
  border: 1px solid rgba(28, 25, 21, 0.06);
  box-shadow: var(--shadow);
}

.masthead,
.hero,
.contact,
.layout,
.colophon {
  width: 100%;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--rule);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.monogram {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1.5px solid var(--harbor);
  color: var(--harbor);
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.doc-label {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-switch,
.print-btn {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--rule-strong);
  background: transparent;
  color: var(--ink-soft);
}

.lang-switch {
  padding: 3px;
}

.lang-btn,
.print-btn {
  font: inherit;
  cursor: pointer;
}

.lang-btn:focus-visible,
.print-btn:focus-visible {
  outline: 2px solid var(--harbor);
  outline-offset: 2px;
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.lang-btn.is-active {
  background: var(--harbor);
  color: #f6f1e8;
}

.print-btn {
  gap: 7px;
  padding: 7px 12px;
  font-size: 13px;
  font-weight: 600;
}

.print-btn:hover,
.lang-btn:hover {
  border-color: var(--harbor);
}

.hero {
  display: grid;
  grid-template-columns: 128px 1fr;
  gap: 28px;
  align-items: center;
  padding: 36px 0 28px;
}

.portrait {
  position: relative;
  margin: 0;
  width: 128px;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: #ece6db;
  border: 1px solid var(--rule);
}

.portrait img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 12%;
}

.portrait-hint {
  display: none;
  margin: 0;
  padding: 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.45;
  text-align: center;
}

.portrait.is-empty img {
  display: none;
}

.portrait.is-empty .portrait-hint {
  display: grid;
  place-items: center;
  position: absolute;
  inset: 0;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--clay);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(46px, 7vw, 72px);
  font-weight: 600;
  line-height: 0.95;
  letter-spacing: -0.03em;
}

.name-zh {
  margin: 8px 0 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 20px;
}

.title {
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 18px;
  font-weight: 500;
}

.contact-value {
  color: var(--harbor);
  overflow-wrap: anywhere;
}

.contact {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  margin: 0 0 36px;
  padding: 18px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  list-style: none;
}

.contact li {
  flex: 1 1 180px;
  min-width: 0;
}

.contact li > span:first-child {
  display: block;
  margin-bottom: 3px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.contact a,
.content a,
.rail a {
  color: var(--harbor);
  text-decoration: none;
  text-underline-offset: 3px;
  overflow-wrap: anywhere;
}

.contact a:hover,
.content a:hover,
.rail a:hover {
  text-decoration: underline;
}

.layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 48px;
}

.rail,
.content {
  min-width: 0;
}

h2 {
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule);
  color: var(--harbor-deep);
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

body[data-lang="zh"] h2 {
  letter-spacing: 0.16em;
}

section + section {
  margin-top: 32px;
}

.about-label {
  margin: 16px 0 8px;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 650;
}

.about-dirs {
  margin: 0;
  padding-left: 18px;
}

.about-dirs li + li {
  margin-top: 8px;
}

.about-dirs li::marker {
  color: var(--clay);
}

.chips,
.plain-list,
.skill-list,
.pubs,
.job ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chips li {
  padding: 5px 9px;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.4;
}

.entry + .entry,
.skill-list div + div,
.plain-list li + li {
  margin-top: 12px;
}

.entry h3,
.job h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 650;
}

.meta,
.year-range,
.section-note,
.colophon {
  color: var(--muted);
  font-size: 13.5px;
}

.meta {
  margin: 3px 0 0;
}

.skill-list dt {
  font-weight: 650;
  font-size: 14px;
}

.skill-list dd {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13.5px;
}

.plain-list li {
  font-size: 14px;
}

.section-note {
  margin: -4px 0 16px;
}

.pubs {
  display: grid;
  gap: 20px;
}

.pubs li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
}

.year,
.year-range {
  font-variant-numeric: tabular-nums;
}

.year {
  color: var(--clay);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding-top: 3px;
}

.pub-title,
.pub-meta,
.pub-venue {
  margin: 0;
}

.pub-title {
  font-weight: 600;
  line-height: 1.45;
}

.pub-meta {
  margin-top: 5px;
  color: var(--ink-soft);
  font-size: 14px;
}

.pub-venue {
  margin-top: 5px;
  color: var(--muted);
  font-size: 13.5px;
}

.pub-venue em {
  color: var(--ink-soft);
  font-style: italic;
}

.doi {
  margin-left: 6px;
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tag {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 7px;
  background: var(--tag-bg);
  color: var(--tag-ink);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.job + .job {
  margin-top: 16px;
}

.job-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
}

.job .meta {
  margin-bottom: 10px;
}

.job ul {
  padding-left: 18px;
  list-style: disc;
}

.job li + li {
  margin-top: 6px;
}

.job li::marker {
  color: var(--clay);
}

.colophon {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
}

.colophon p {
  margin: 0;
}

.print-only {
  display: none;
}

@media (max-width: 860px) {
  .page {
    width: min(100% - 20px, var(--page-max));
    margin-top: 16px;
    padding: 24px 20px 28px;
  }

  .hero {
    grid-template-columns: 96px 1fr;
    gap: 18px;
    padding-top: 28px;
  }

  .portrait {
    width: 96px;
  }

  .layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 560px) {
  .masthead {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero h1 {
    font-size: 48px;
  }

  .job-head {
    flex-direction: column;
    gap: 2px;
  }
}

@media print {
  :root {
    --paper: #fff;
    --paper-raised: #fff;
  }

  @page {
    size: A4;
    margin: 14mm 15mm 16mm;
  }

  body {
    background: #fff;
    font-size: 10.6pt;
    line-height: 1.45;
  }

  .page {
    width: auto;
    margin: 0;
    padding: 0;
    border: 0;
    box-shadow: none;
  }

  .no-print {
    display: none !important;
  }

  .print-only {
    display: block;
  }

  .masthead {
    padding-bottom: 10px;
  }

  .hero {
    padding: 16px 0 12px;
    gap: 20px;
  }

  .hero h1 {
    font-size: 32pt;
  }

  .title {
    font-size: 10.5pt;
  }

  .portrait {
    width: 92px;
  }

  .portrait-hint {
    display: none;
  }

  .contact {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 20px;
  }

  .layout {
    gap: 16px;
  }

  .layout {
    grid-template-columns: 190px 1fr;
  }

  section + section {
    margin-top: 16px;
  }

  .pubs {
    gap: 10px;
  }

  .colophon {
    margin-top: 18px;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  .doi::after {
    content: " " attr(href);
    font-size: 8.5pt;
    letter-spacing: 0;
    text-transform: none;
  }
}