:root {
  --bg: #f6f1e3;
  --bg-strong: #efe7d1;
  --text: #23211b;
  --muted: #6d6659;
  --line: rgba(35, 33, 27, 0.14);
  --accent: #9a684d;
  --accent-soft: rgba(154, 104, 77, 0.12);
  --panel: rgba(255, 252, 244, 0.72);
  --shadow: 0 24px 80px rgba(78, 58, 35, 0.08);
  --shell-width: min(1400px, 100vw);
  --shell-left: calc((100vw - var(--shell-width)) / 2);
  --left-offset: 40px;
  --top-offset: 68px;
  --nav-width: 280px;
  --nav-gap: 56px;
  --content-start: calc(50vw - var(--shell-left) - var(--left-offset));
  --content-width: min(calc(50vw - var(--shell-left) - 48px), 58rem);
  --intro-start: var(--content-start);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 0;
}

body {
  margin: 0;
  min-height: 100vh;
  scroll-snap-type: y mandatory;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.75), transparent 24%),
    linear-gradient(180deg, #f7f2e7 0%, var(--bg) 100%);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

.site-name {
  position: fixed;
  top: 28px;
  left: calc(var(--shell-left) + var(--left-offset));
  z-index: 20;
  color: inherit;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1;
  transition: opacity 180ms ease;
}

.site-name:hover,
.site-name:focus-visible {
  opacity: 0.64;
}

a,
button {
  color: inherit;
}

.page-shell {
  width: var(--shell-width);
  margin: 0 auto;
  padding: 0;
  display: block;
  position: relative;
  padding-left: var(--left-offset);
  padding-top: var(--top-offset);
}

.nav-panel {
  position: absolute;
  top: var(--top-offset);
  left: var(--left-offset);
  width: var(--nav-width);
  padding: 0;
  z-index: 5;
}

.menu-group + .menu-group {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.menu-group-unified {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.scroll-links,
.tab-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tab-list {
  padding-top: 0;
}

.scroll-links a {
  width: fit-content;
  text-decoration: none;
  font-size: clamp(1.7rem, 3vw, 2.15rem);
  line-height: 1.02;
  letter-spacing: -0.06em;
  font-weight: 400;
  position: relative;
  transition: color 180ms ease, opacity 180ms ease;
  opacity: 0.72;
}

.scroll-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.scroll-links a.is-current,
.scroll-links a:hover,
.scroll-links a:focus-visible {
  opacity: 1;
}

.scroll-links a:hover::after,
.scroll-links a:focus-visible::after {
  transform: scaleX(1);
}

.scroll-links a.is-current::after {
  transform: scaleX(1);
}

.tab-button {
  border: 0;
  background: transparent;
  padding: 0;
  text-align: left;
  text-decoration: none;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: clamp(1.7rem, 3vw, 2.15rem);
  line-height: 0.9;
  letter-spacing: -0.06em;
  font-weight: 400;
  white-space: nowrap;
  cursor: pointer;
  opacity: 0.38;
  transition: opacity 180ms ease;
}

.tab-button:hover,
.tab-button:focus-visible {
  opacity: 0.72;
}

.tab-button.is-active {
  opacity: 1;
}

.panel-label,
.section-index,
.hero-kicker {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--muted);
}

.content {
  padding-top: 0;
  width: 100%;
}

.content-section {
  scroll-snap-align: start;
  scroll-snap-stop: always;
  display: grid;
  align-items: start;
  justify-items: stretch;
  padding: 72px 0 72px;
  border-bottom: 1px solid var(--line);
}

.content-section-intro {
  align-items: start;
  justify-items: stretch;
  padding-top: 0;
  padding-left: 0;
}

.content-section-intro > .profile-orb,
.content-section-intro > .intro-caption,
.content-section-intro > .intro-contact,
.content-section-intro > .intro-social {
  margin-left: var(--intro-start);
  align-self: start;
  justify-self: start;
  margin-top: 20px;
}

.content-section-intro .profile-orb {
  margin-top: 0;
  margin-bottom: 0;
}

.intro-caption {
  width: 250px;
  margin-top: 0;
  margin-bottom: 0;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.4;
  text-align: left;
}

.intro-contact {
  width: 250px;
  margin-bottom: 0;
  font-size: 0.9rem;
  line-height: 1.4;
  text-align: left;
}

.intro-contact a {
  color: var(--muted);
  text-decoration: none;
}

.intro-social {
  width: 250px;
  margin-bottom: 0;
  font-size: 0;
  line-height: 1;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.intro-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  text-decoration: none;
  transition: color 180ms ease, transform 180ms ease, opacity 180ms ease;
}

.intro-social a:hover,
.intro-social a:focus-visible {
  color: var(--text);
  transform: translateY(-1px);
}

.intro-social svg {
  width: 20px;
  height: 20px;
  display: block;
}

.intro-social rect,
.intro-social circle,
.intro-social path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.intro-social .instagram-dot {
  fill: currentColor;
  stroke: none;
}

.intro-social .linkedin-dot {
  fill: currentColor;
  stroke: none;
}

.profile-orb {
  position: relative;
  width: 250px;
  margin: 0;
  border-radius: 50%;
  overflow: hidden;
  border: 0;
  box-shadow: none;
  background: transparent;
}

.profile-orb img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  mix-blend-mode: multiply;
}

.content-section-bio {
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  align-items: start;
}

.content-block {
  max-width: none;
  width: var(--content-width);
  margin-left: var(--content-start);
  text-align: left;
}

.content-section h2 {
  margin: 0 0 16px;
  font-size: clamp(1.7rem, 3vw, 2.15rem);
  line-height: 1.02;
  letter-spacing: -0.06em;
  font-weight: 400;
}

.content-block p,
.content-block ul,
.content-block li,
.content-block .news-link {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.content-block p {
  max-width: 52rem;
}

.content-section p + p {
  margin-top: 1rem;
}

.publication-list {
  margin: 0;
  padding-left: 1.25rem;
  max-width: 58rem;
  color: var(--muted);
}

.publication-link {
  color: inherit;
  text-decoration: none;
}

.publication-link[href] {
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 0.12em;
  transition: text-decoration-color 180ms ease;
}

.publication-link[href]:hover,
.publication-link[href]:focus-visible {
  cursor: pointer;
  text-decoration-color: currentColor;
}

.publication-list li + li {
  margin-top: 0.9rem;
}

.publication-meta {
  white-space: nowrap;
}

.publication-archive {
  display: inline-flex;
  align-items: center;
  margin-left: 0.35rem;
  text-decoration: none;
  vertical-align: baseline;
}

.arxiv-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.02em;
  padding: 0.08rem 0.34rem 0.12rem;
  border: 1px solid rgba(179, 27, 27, 0.24);
  border-radius: 999px;
  background: rgba(179, 27, 27, 0.08);
  color: #b31b1b;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.arxiv-logo-ar {
  font-weight: 500;
}

.arxiv-logo-xiv {
  font-weight: 700;
}

.publication-archive:hover .arxiv-logo,
.publication-archive:focus-visible .arxiv-logo {
  transform: translateY(-1px);
  background: rgba(179, 27, 27, 0.14);
  border-color: rgba(179, 27, 27, 0.36);
}

.news-item {
  margin: 0;
}

.news-link {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

@media (max-width: 980px) {
  :root {
    --nav-width: 240px;
    --nav-gap: 40px;
    --intro-start: var(--content-start);
  }

  .site-name {
    left: calc(var(--shell-left) + var(--left-offset));
  }

  .page-shell {
    width: 100%;
    padding-top: var(--top-offset);
  }

  .nav-panel {
    top: var(--top-offset);
    left: var(--left-offset);
  }

  .content {
    scroll-snap-type: none;
  }

  .content-section,
  .content-section-bio {
    min-height: auto;
    grid-template-columns: 1fr;
    padding: 72px 0 72px;
  }

  .content-block {
    width: var(--content-width);
    margin-left: var(--content-start);
  }

  .content-section-intro .profile-orb {
    margin-top: 0;
  }

  .intro-caption {
    width: 250px;
    margin-top: 0;
  }

  .intro-contact {
    width: 250px;
  }
}

@media (max-width: 640px) {
  body {
    scroll-snap-type: none;
  }

  :root {
    --left-offset: 24px;
    --top-offset: 56px;
    --nav-width: 0px;
    --nav-gap: 0px;
    --content-start: 0px;
    --content-width: 100%;
    --intro-start: 0px;
  }

  .site-name {
    top: 20px;
    left: calc(var(--shell-left) + var(--left-offset));
    font-size: 0.92rem;
  }

  .nav-panel {
    top: 56px;
  }

  .page-shell {
    width: 100%;
    padding-top: var(--top-offset);
  }

  .nav-panel {
    top: var(--top-offset);
    left: var(--left-offset);
  }

  .content-section {
    gap: 16px;
    padding: 62px 0 62px;
  }

  .content-section-intro {
    padding-top: 168px;
  }

  .content-block {
    width: 100%;
    margin-left: 0;
  }

  .content-section-intro .profile-orb {
    margin-left: 0;
    margin-top: 0;
  }

  .intro-caption {
    width: 240px;
    margin: 0;
    font-size: 0.92rem;
  }

  .intro-contact {
    width: 240px;
  }

  .profile-orb {
    width: 240px;
  }

  .tab-button.is-active {
    transform: none;
  }
}