:root {
  --profile-ink: #1f2927;
  --profile-muted: #65716e;
  --profile-line: #dde3df;
  --profile-paper: #ffffff;
  --profile-wash: #f2f5f2;
  --profile-accent: #4f746e;
  --profile-accent-dark: #34524d;
  --profile-warm: #a54851;
  --profile-shadow: 0 8px 24px rgba(41, 57, 53, 0.05);
  --profile-font: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
}

#header {
  position: relative;
  z-index: 100;
  display: flex;
  width: min(64rem, calc(100vw - 2rem));
  align-items: center;
  margin: 0 0 2.75rem 50%;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--profile-line);
  font-family: var(--profile-font);
  transform: translateX(-50%);
}

#header > .u-url {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

#header #logo {
  float: none;
  width: 40px;
  height: 40px;
  margin-right: 0.9rem;
  border-radius: 0;
  filter: none;
}

#header #title h1 {
  overflow: hidden;
  margin: 0;
  color: var(--profile-ink);
  font-family: var(--profile-font);
  font-size: 1.2rem;
  font-weight: 720;
  letter-spacing: -0.01em;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#header #nav {
  margin-left: auto;
  color: var(--profile-muted);
  font-family: var(--profile-font);
  font-size: 1.02rem;
  font-weight: 650;
}

#header #nav ul {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  line-height: 1;
}

#header #nav ul li {
  margin: 0;
  border: 0;
}

#header #nav ul a {
  display: inline-flex;
  min-height: 2.6rem;
  align-items: center;
  margin: 0;
  padding: 0.56rem 0.84rem;
  border-radius: 0.45rem;
  color: var(--profile-muted);
}

#header #nav ul a:hover,
#header #nav ul a:focus-visible {
  background: var(--profile-wash);
  color: var(--profile-ink);
  text-decoration: none;
}

#archive {
  width: min(50rem, calc(100vw - 2rem));
  margin: 0 0 4rem 50%;
  color: var(--profile-ink);
  font-family: var(--profile-font);
  transform: translateX(-50%);
}

.writing-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--profile-line);
}

.writing-header .writing-kicker {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--profile-accent-dark);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.writing-header h1 {
  margin: 0 0 0.55rem;
  color: var(--profile-ink);
  font-family: var(--profile-font);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 720;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.writing-header p {
  margin: 0;
  color: var(--profile-muted);
  font-size: 0.98rem;
  text-align: left;
}

#archive .post-list {
  margin: 0;
}

#archive .post-year {
  margin: 2.2rem 0 0.55rem;
}

#archive .post-year:first-child {
  margin-top: 0;
}

#archive .post-year h2 {
  margin: 0;
  color: var(--profile-accent-dark);
  font-family: var(--profile-font);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

#archive .post-year h2::before {
  content: none;
}

#archive .post-item {
  display: grid;
  align-items: baseline;
  gap: 1.25rem;
  margin: 0;
  padding: 0.72rem 0;
  border-bottom: 1px solid #e8ece9;
  grid-template-columns: 7.5rem minmax(0, 1fr);
}

#archive .post-item .meta {
  margin: 0;
  color: var(--profile-muted);
  font-family: var(--profile-font);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

#archive .post-item a {
  color: var(--profile-ink);
  font-family: var(--profile-font);
  font-size: 0.96rem;
  text-decoration: none;
  background: none;
}

#archive .post-item a:hover,
#archive .post-item a:focus-visible {
  color: var(--profile-warm);
}

article.post > header h1,
article.post > .content {
  font-family: var(--profile-font);
}

#footer {
  width: min(64rem, calc(100vw - 2rem));
  margin-left: 50%;
  border-top-color: var(--profile-line);
  color: var(--profile-muted);
  font-family: var(--profile-font);
  transform: translateX(-50%);
}

.profile-page {
  width: min(64rem, calc(100vw - 2rem));
  margin: 0 0 3rem 50%;
  color: var(--profile-ink);
  font-family: var(--profile-font);
  font-size: 0.97rem;
  line-height: 1.72;
  transform: translateX(-50%);
}

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

.profile-page h1,
.profile-page h2,
.profile-page h3,
.profile-page p {
  margin-top: 0;
}

.profile-page p {
  text-align: left;
}

.profile-page h1,
.profile-page h2,
.profile-page h3 {
  color: var(--profile-ink);
  font-family: inherit;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.profile-page h1::before,
.profile-page h2::before,
.profile-page h3::before {
  content: none !important;
}

.profile-page h1 {
  margin-bottom: 0.8rem;
  font-size: clamp(2.15rem, 4.4vw, 3.2rem);
  line-height: 1.06;
}

.profile-page h2 {
  margin-bottom: 0.7rem;
  font-size: clamp(1.45rem, 2.6vw, 1.95rem);
  line-height: 1.2;
}

.profile-page h3 {
  margin-bottom: 0.4rem;
  font-size: 1.08rem;
  line-height: 1.35;
}

.profile-page a {
  color: inherit;
  text-decoration: none;
  background-image: none;
}

.profile-page img {
  margin: 0;
}

.profile-page .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.7rem;
  color: var(--profile-accent-dark);
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.profile-page .eyebrow::before {
  width: 1.25rem;
  height: 1px;
  background: var(--profile-warm);
  content: "";
}

.profile-page .lead {
  max-width: 44rem;
  margin-bottom: 0;
  color: #43504d;
  font-size: clamp(1rem, 1.5vw, 1.14rem);
  line-height: 1.68;
}

.profile-page .muted {
  color: var(--profile-muted);
}

.profile-page .section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1.5rem;
  margin: 3.4rem 0 1.15rem;
}

.profile-page .section-heading p {
  max-width: 35rem;
  margin-bottom: 0.15rem;
  color: var(--profile-muted);
}

.profile-page .section-heading h2 {
  margin-bottom: 0;
}

.profile-page .button-row,
.profile-page .link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.profile-page .button {
  display: inline-flex;
  min-height: 2.35rem;
  align-items: center;
  justify-content: center;
  padding: 0.58rem 0.85rem;
  border: 1px solid var(--profile-line);
  border-radius: 999px;
  background: var(--profile-paper);
  color: var(--profile-accent-dark);
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1;
  transition: border-color 160ms ease, box-shadow 160ms ease, color 160ms ease,
    transform 160ms ease;
}

.profile-page .button:hover,
.profile-page .button:focus-visible {
  border-color: #aebdb9;
  color: var(--profile-warm);
  box-shadow: 0 7px 20px rgba(52, 82, 77, 0.1);
  transform: translateY(-1px);
}

.profile-page .button.primary {
  border-color: var(--profile-accent-dark);
  background: var(--profile-accent-dark);
  color: #fff;
}

.profile-page .button.primary:hover,
.profile-page .button.primary:focus-visible {
  border-color: var(--profile-warm);
  background: var(--profile-warm);
  color: #fff;
}

.home-hero {
  display: grid;
  min-height: 23rem;
  align-items: center;
  gap: clamp(2rem, 4vw, 3rem);
  grid-template-columns: minmax(0, 1.3fr) minmax(16rem, 0.7fr);
}

.home-hero__copy {
  padding: 1rem 0;
}

.home-hero__copy h1 {
  font-size: clamp(1.95rem, 3.6vw, 2.7rem);
}

.home-hero__copy .lead {
  max-width: 39rem;
}

.home-hero__meta {
  margin: 1rem 0 1.35rem;
  color: var(--profile-muted);
  font-size: 0.94rem;
  font-weight: 650;
}

.home-hero__visual {
  position: relative;
  overflow: hidden;
  min-height: 22rem;
  border: 1px solid var(--profile-line);
  border-radius: 1.05rem;
  background: #d9d4ef;
  box-shadow: var(--profile-shadow);
}

.home-hero__visual::after {
  content: none;
}

.profile-page .home-hero__visual img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center 48%;
}

.research-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.research-card {
  position: relative;
  overflow: hidden;
  min-height: 12rem;
  padding: clamp(1.35rem, 2.5vw, 1.7rem);
  border: 1px solid var(--profile-line);
  border-radius: 0.9rem;
  background: var(--profile-paper);
  box-shadow: none;
}

.research-card::after {
  content: none;
}

.research-card__number {
  display: block;
  margin-bottom: 1.5rem;
  color: var(--profile-warm);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.research-card p {
  position: relative;
  z-index: 1;
  max-width: 29rem;
  margin-bottom: 0;
  color: var(--profile-muted);
}

.home-note {
  display: grid;
  align-items: center;
  gap: 1.5rem;
  margin-top: 1rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--profile-line);
  border-left: 3px solid var(--profile-accent);
  border-radius: 0.75rem;
  background: var(--profile-wash);
  color: var(--profile-ink);
  grid-template-columns: 1fr auto;
}

.home-note h2 {
  margin-bottom: 0.2rem;
  color: var(--profile-ink);
}

.home-note p {
  margin-bottom: 0;
  color: var(--profile-muted);
}

.home-note__label {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--profile-warm);
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.about-hero {
  display: grid;
  overflow: hidden;
  min-height: 23rem;
  border: 1px solid var(--profile-line);
  border-radius: 1.05rem;
  background: var(--profile-paper);
  box-shadow: none;
  grid-template-columns: minmax(17rem, 0.8fr) minmax(0, 1.2fr);
}

.about-portrait {
  position: relative;
  min-height: 23rem;
  background: #c7b5a6;
}

.profile-page .about-portrait img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: 58% center;
}

.about-intro {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.65rem, 3.2vw, 2.35rem);
}

.about-intro__identity {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem 0.75rem;
  margin: 0 0 0.9rem;
  color: var(--profile-ink);
  font-size: 1.06rem;
  font-weight: 720;
  letter-spacing: 0.01em;
  line-height: 1.35;
}

.about-intro__identity span[lang] {
  padding-left: 0.75rem;
  border-left: 1px solid var(--profile-line);
  color: var(--profile-muted);
  font-size: 0.92em;
  font-weight: 650;
}

.about-intro h1 {
  max-width: 32rem;
  margin-bottom: 0.75rem;
  font-size: clamp(1.7rem, 2.8vw, 2.25rem);
  line-height: 1.12;
}

.about-intro__role {
  margin: 0 0 1rem;
  color: var(--profile-muted);
  font-size: 0.88rem;
  font-weight: 680;
  line-height: 1.5;
}

.about-intro .button-row {
  margin-top: 1.3rem;
}

.about-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.about-card {
  padding: clamp(1.35rem, 2.5vw, 1.7rem);
  border: 1px solid var(--profile-line);
  border-radius: 0.85rem;
  background: var(--profile-paper);
}

.about-card p:last-child {
  margin-bottom: 0;
}

.about-card--tint {
  background: var(--profile-wash);
}

.fact-list {
  display: grid;
  gap: 0;
  margin: 0;
}

.fact-list__row {
  display: grid;
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--profile-line);
  grid-template-columns: 8rem 1fr;
}

.fact-list__row:first-child {
  border-top: 0;
}

.fact-list dt {
  color: var(--profile-muted);
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.fact-list dd {
  margin: 0;
  font-weight: 650;
}

.contact-strip {
  display: grid;
  align-items: center;
  gap: 1.5rem;
  margin-top: 1rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--profile-line);
  border-radius: 0.85rem;
  background: var(--profile-paper);
  grid-template-columns: 1fr auto;
}

.contact-strip h2,
.contact-strip p {
  margin-bottom: 0;
}

.contact-strip p {
  color: var(--profile-muted);
}

.academic-hero {
  display: grid;
  align-items: end;
  gap: 2rem;
  padding: 0.2rem 0 1.25rem;
  border-bottom: 1px solid var(--profile-line);
  border-radius: 0;
  background: transparent;
  color: var(--profile-ink);
  grid-template-columns: minmax(0, 1fr) auto;
}

.academic-hero h1 {
  margin-bottom: 0.5rem;
  color: var(--profile-ink);
  font-size: clamp(2.05rem, 4.2vw, 3rem);
}

.academic-hero .eyebrow {
  color: var(--profile-accent-dark);
}

.academic-hero .lead {
  max-width: 46rem;
  color: var(--profile-muted);
}

.academic-count {
  min-width: 6rem;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  text-align: right;
}

.academic-count strong {
  display: block;
  color: var(--profile-ink);
  font-size: 1.65rem;
  line-height: 1;
}

.academic-count span {
  display: block;
  margin-top: 0.35rem;
  color: var(--profile-muted);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.publication-list {
  display: grid;
  gap: 0.9rem;
}

.publication-card {
  display: grid;
  overflow: hidden;
  border: 1px solid var(--profile-line);
  border-radius: 0.9rem;
  background: var(--profile-paper);
  box-shadow: none;
  grid-template-columns: minmax(18rem, 0.86fr) minmax(0, 1.14fr);
}

.publication-card__visual {
  position: relative;
  min-height: 15rem;
  border-right: 1px solid var(--profile-line);
  background: var(--profile-wash);
}

.profile-page .publication-card__visual img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  padding: 1.1rem;
  object-fit: contain;
}

.publication-card__body {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.3rem, 2.5vw, 1.7rem);
}

.publication-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.9rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: 0.28rem 0.58rem;
  border-radius: 999px;
  background: var(--profile-wash);
  color: var(--profile-accent-dark);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.045em;
  line-height: 1;
  text-transform: uppercase;
}

.tag.highlight {
  background: #f6e9e9;
  color: #8b3640;
}

.publication-card h3 {
  font-size: clamp(1.15rem, 2.2vw, 1.48rem);
}

.publication-card__authors {
  margin-bottom: 0.95rem;
  color: var(--profile-muted);
  font-size: 0.91rem;
  line-height: 1.65;
}

.publication-card__authors strong {
  color: var(--profile-ink);
  font-weight: 750;
  text-decoration: underline;
  text-decoration-color: rgba(165, 72, 81, 0.45);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.publication-card .link-row {
  margin-top: 0.2rem;
}

.publication-card .button {
  min-height: 2.35rem;
  padding: 0.58rem 0.82rem;
  font-size: 0.8rem;
}

.publication-card details {
  margin-top: 1rem;
}

.publication-card summary {
  width: fit-content;
  color: var(--profile-accent-dark);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 750;
}

.publication-card pre {
  overflow-x: auto;
  margin: 0.8rem 0 0;
  padding: 1rem;
  border: 0;
  border-radius: 0.85rem;
  background: #202a28;
  color: #edf5f2;
  font-size: 0.72rem;
  line-height: 1.5;
}

.publication-card--featured {
  grid-template-columns: 1.18fr 0.82fr;
}

.publication-card--featured .publication-card__visual {
  min-height: 17rem;
}

.opensource-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.opensource-card {
  display: flex;
  min-height: 10rem;
  flex-direction: column;
  padding: 1.35rem;
  border: 1px solid var(--profile-line);
  border-radius: 0.85rem;
  background: var(--profile-paper);
}

.opensource-card__role {
  margin-bottom: 1rem;
  color: var(--profile-warm);
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.opensource-card p {
  margin-bottom: 1.2rem;
  color: var(--profile-muted);
}

.opensource-card .text-link {
  width: fit-content;
  margin-top: auto;
  color: var(--profile-accent-dark);
  font-size: 0.86rem;
  font-weight: 750;
}

.opensource-card .text-link:hover,
.opensource-card .text-link:focus-visible {
  color: var(--profile-warm);
}

@media (max-width: 820px) {
  .profile-page {
    width: min(100%, calc(100vw - 1.5rem));
    margin-top: 0;
  }

  .home-hero,
  .about-hero,
  .academic-hero,
  .publication-card,
  .publication-card--featured {
    grid-template-columns: 1fr;
  }

  .home-hero {
    min-height: auto;
  }

  .home-hero__copy {
    padding: 0.5rem 0 0;
  }

  .home-hero__visual {
    min-height: 22rem;
  }

  .about-portrait {
    min-height: 22rem;
  }

  .about-intro {
    padding: 1.55rem;
  }

  .academic-hero {
    align-items: start;
  }

  .academic-count {
    width: auto;
    text-align: left;
  }

  .publication-card__visual {
    min-height: 16rem;
    border-right: 0;
    border-bottom: 1px solid var(--profile-line);
  }

  .publication-card--featured .publication-card__visual {
    min-height: 16rem;
  }
}

@media (max-width: 640px) {
  .profile-page {
    margin-bottom: 2.5rem;
    font-size: 0.96rem;
  }

  .profile-page .section-heading {
    display: block;
    margin-top: 2.75rem;
  }

  .profile-page .section-heading p {
    margin-top: 0.6rem;
  }

  .research-grid,
  .about-grid,
  .opensource-grid {
    grid-template-columns: 1fr;
  }

  .home-hero__visual,
  .about-portrait {
    min-height: 19rem;
  }

  .home-note,
  .contact-strip {
    grid-template-columns: 1fr;
  }

  .fact-list__row {
    gap: 0.35rem;
    grid-template-columns: 1fr;
  }

  .publication-card__visual,
  .publication-card--featured .publication-card__visual {
    min-height: 14rem;
  }

  .publication-card__body {
    padding: 1.2rem;
  }
}

@media (max-width: 480px) {
  #header {
    width: calc(100vw - 2rem);
    margin-bottom: 2.25rem;
    padding-bottom: 0.85rem;
  }

  #header #title {
    display: block;
    min-height: 0;
    margin-right: 0;
  }

  #header #title h1 {
    display: block;
    font-size: 1.1rem;
  }

  #header #logo {
    width: 34px;
    height: 34px;
    margin-right: 0.7rem;
  }

  #header #nav ul li.icon {
    position: static;
    display: inline-flex;
  }

  #header #nav ul li.icon a {
    min-width: 2.5rem;
    min-height: 2.5rem;
    justify-content: center;
    padding: 0;
  }

  #header #nav ul.responsive {
    position: absolute;
    z-index: 20;
    top: 3rem;
    right: 0;
    display: grid;
    min-width: 9rem;
    padding: 0.45rem;
    border: 1px solid var(--profile-line);
    border-radius: 0.7rem;
    background: #fff;
    box-shadow: 0 12px 28px rgba(31, 41, 39, 0.14);
  }

  #header #nav ul.responsive li {
    display: block;
    padding: 0;
    font-size: 0.95rem;
  }

  #header #nav ul.responsive li.icon {
    display: none;
  }

  #header #nav ul.responsive a {
    display: flex;
    width: 100%;
    padding: 0.65rem 0.75rem;
  }

  #archive {
    width: calc(100vw - 2rem);
  }

  .writing-header {
    margin-bottom: 1.75rem;
  }

  #archive .post-item {
    gap: 0.3rem;
    grid-template-columns: 1fr;
  }

  #archive .post-item .meta {
    font-size: 0.72rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .profile-page .button {
    transition: none;
  }
}