:root {
  color-scheme: light;
  --bg: #f7f2e9;
  --bg-elevated: #fffaf2;
  --bg-soft: #ece7dc;
  --text: #1c2321;
  --muted: #6e746f;
  --border: rgba(28, 35, 33, 0.13);
  --accent: #0b6f68;
  --accent-strong: #094f4a;
  --accent-soft: rgba(11, 111, 104, 0.12);
  --gold: #bb7a1f;
  --rose: #a54555;
  --shadow: 0 22px 65px rgba(31, 36, 32, 0.13);
  --shadow-soft: 0 12px 35px rgba(31, 36, 32, 0.09);
  --radius: 8px;
  --max-width: 1180px;
  --nav-height: 74px;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #101412;
  --bg-elevated: #171d1a;
  --bg-soft: #202822;
  --text: #edf4ee;
  --muted: #aab5ad;
  --border: rgba(237, 244, 238, 0.13);
  --accent: #67d4c7;
  --accent-strong: #9be6dd;
  --accent-soft: rgba(103, 212, 199, 0.14);
  --gold: #e5b35d;
  --rose: #ee8c9c;
  --shadow: 0 22px 65px rgba(0, 0, 0, 0.34);
  --shadow-soft: 0 12px 35px rgba(0, 0, 0, 0.22);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(135deg, rgba(11, 111, 104, 0.08), transparent 32%),
    linear-gradient(315deg, rgba(187, 122, 31, 0.11), transparent 34%),
    var(--bg);
  color: var(--text);
  font-family: Inter, "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  transition: background-color 180ms ease, color 180ms ease;
}

body.menu-open {
  overflow: hidden;
}

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

a:hover {
  color: var(--rose);
}

img,
video {
  display: block;
  max-width: 100%;
}

button,
input {
  font: inherit;
}

.ambient {
  position: fixed;
  inset: auto;
  pointer-events: none;
  z-index: -1;
  opacity: 0.55;
}

.ambient-one {
  top: 130px;
  left: 0;
  width: 28vw;
  height: 28vw;
  min-width: 260px;
  min-height: 260px;
  background: radial-gradient(circle, rgba(11, 111, 104, 0.18), transparent 68%);
}

.ambient-two {
  right: 0;
  bottom: 6vh;
  width: 30vw;
  height: 30vw;
  min-width: 280px;
  min-height: 280px;
  background: radial-gradient(circle, rgba(165, 69, 85, 0.14), transparent 70%);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(20px, 4vw, 48px);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand:hover {
  color: var(--text);
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  background: var(--text);
  color: var(--bg);
  font-size: 0.82rem;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  flex-wrap: wrap;
  gap: clamp(12px, 2vw, 28px);
  row-gap: 6px;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
  transition: color 160ms ease;
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--text);
}

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

.icon-button,
.lang-switch,
.filter-pill,
.details-toggle {
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.icon-button {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
}

.lang-switch {
  min-width: 64px;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  font-weight: 800;
}

.icon-button:hover,
.lang-switch:hover,
.filter-pill:hover,
.details-toggle:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 60%, var(--border));
}

.section-shell {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
}

main {
  padding: 46px 0 28px;
}

section {
  scroll-margin-top: calc(var(--nav-height) + 24px);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: clamp(30px, 5vw, 64px);
  align-items: start;
  min-height: auto;
  overflow: hidden;
  padding: 38px clamp(22px, 4vw, 54px) 48px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 7%, transparent), transparent 38%),
    linear-gradient(315deg, color-mix(in srgb, var(--gold) 10%, transparent), transparent 42%),
    color-mix(in srgb, var(--bg-elevated) 88%, transparent);
  box-shadow: var(--shadow-soft);
  isolation: isolate;
}

.hero-copy {
  grid-column: 2;
  grid-row: 1;
  align-self: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--text);
  line-height: 1.05;
  letter-spacing: 0;
}

h1 {
  font-family: Newsreader, Georgia, serif;
  font-size: clamp(3.4rem, 6.4vw, 6.25rem);
  font-weight: 700;
  white-space: nowrap;
}

h1 span {
  display: inline-block;
  margin-left: 0.12em;
  color: var(--accent-strong);
  font-family: Inter, "Noto Sans SC", sans-serif;
  font-size: clamp(1.25rem, 2.2vw, 2rem);
  font-weight: 900;
  vertical-align: middle;
}

h2 {
  font-family: Newsreader, Georgia, serif;
  font-size: clamp(2.1rem, 5vw, 4rem);
  font-weight: 700;
}

h3 {
  font-size: 1.04rem;
  font-weight: 800;
}

.hero-lede {
  max-width: 700px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  line-height: 1.55;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-tags span {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.86rem;
  font-weight: 800;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-about-card {
  grid-column: 1 / -1;
  grid-row: 2;
  display: grid;
  grid-template-columns: minmax(180px, 0.28fr) minmax(0, 1fr);
  gap: clamp(22px, 4vw, 46px);
  width: 100%;
  margin-top: -18px;
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  box-shadow: var(--shadow-soft);
}

.hero-about-heading h2 {
  font-size: clamp(2.1rem, 4vw, 3.4rem);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 800;
}

.button.primary {
  background: var(--text);
  color: var(--bg);
}

.button.secondary {
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
}

.hero-copy-feedback {
  align-self: center;
  min-width: 96px;
  color: var(--accent-strong);
  font-size: 0.84rem;
  font-weight: 900;
}

.profile-panel {
  grid-column: 1;
  grid-row: 1;
  align-self: start;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  box-shadow: var(--shadow);
}

.portrait-wrap {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--bg-soft);
}

.portrait {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 18%;
  transition: opacity 220ms ease, transform 420ms ease;
}

.portrait-hover {
  opacity: 0;
  object-position: center;
}

.portrait-wrap:hover .portrait-primary {
  opacity: 0;
}

.portrait-wrap:hover .portrait-hover {
  opacity: 1;
  transform: scale(1.02);
}

.profile-content {
  padding: 18px;
}

.profile-content h2 {
  font-family: Inter, "Noto Sans SC", sans-serif;
  font-size: 1.35rem;
}

.profile-content p {
  margin: 6px 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.profile-content p a,
.about-copy a {
  color: var(--accent-strong);
  font-weight: 800;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 38%, transparent);
}

.profile-content p a:hover,
.about-copy a:hover {
  color: var(--rose);
  border-bottom-color: var(--rose);
}

.socials {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.socials a,
.social-button {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--text);
  cursor: pointer;
  font-size: 1.08rem;
  transition: border-color 160ms ease, color 160ms ease, background 160ms ease, transform 160ms ease;
}

.socials a:hover,
.social-button:hover,
.social-button.is-copied {
  border-color: color-mix(in srgb, var(--accent) 54%, var(--border));
  background: var(--accent-soft);
  color: var(--accent-strong);
  transform: translateY(-1px);
}

.copy-feedback {
  min-height: 1.2em;
  margin-top: 10px;
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 800;
}

.about-grid,
.section-shell:not(.hero):not(.footer) {
  padding: 78px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 0.75fr 1.45fr 0.8fr;
  gap: clamp(24px, 4vw, 52px);
  align-items: start;
  border-top: 1px solid var(--border);
}

.about-copy p {
  margin: 0;
  color: var(--text);
  font-size: 1.02rem;
}

.about-copy p + p {
  margin-top: 18px;
}

.cooperation-note {
  padding: 14px 16px;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--border));
  border-radius: var(--radius);
  background: var(--accent-soft);
  font-weight: 700;
}

.internship-note {
  padding: 14px 16px;
  border: 1px solid color-mix(in srgb, var(--rose) 30%, var(--border));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--rose) 11%, transparent);
  color: var(--text);
  font-weight: 800;
}

.about-copy a.highlight-email {
  color: var(--rose);
  border-bottom-color: color-mix(in srgb, var(--rose) 55%, transparent);
}

.focus-card {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-soft);
}

.focus-card span {
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 900;
  text-transform: uppercase;
}

.focus-card p {
  margin: 10px 0 0;
  color: var(--text);
  font-weight: 700;
  line-height: 1.55;
}

.section-heading {
  margin-bottom: 28px;
}

.section-heading.horizontal {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
}

.section-note {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.timeline {
  max-height: 480px;
  overflow: auto;
  padding: 8px 12px 8px 0;
  scrollbar-width: thin;
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 20px;
  padding: 0 0 24px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 118px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateX(-4px);
}

.timeline-item::after {
  content: "";
  position: absolute;
  top: 20px;
  left: 118px;
  bottom: 0;
  width: 1px;
  background: var(--border);
}

.timeline-date {
  color: var(--gold);
  font-size: 0.86rem;
  font-weight: 900;
}

.timeline-text {
  padding-left: 20px;
  color: var(--text);
}

.presentation-groups,
.service-groups {
  display: grid;
  gap: 18px;
}

.presentation-group,
.service-group {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elevated) 94%, transparent);
  box-shadow: var(--shadow-soft);
}

.presentation-group h3,
.service-group h3 {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 0.92rem;
  font-weight: 900;
  text-transform: uppercase;
}

.presentation-list,
.service-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 20px;
}

.presentation-list li,
.service-list li {
  color: var(--text);
  line-height: 1.6;
}

.presentation-list a,
.service-list a {
  color: var(--accent-strong);
  font-weight: 900;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 38%, transparent);
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.filter-pill {
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 900;
}

.filter-pill.is-active {
  background: var(--text);
  color: var(--bg);
}

.publication-list {
  display: grid;
  gap: 18px;
}

.publication-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 236px;
  gap: 24px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elevated) 94%, transparent);
  box-shadow: var(--shadow-soft);
}

.pub-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.pub-badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.75rem;
  font-weight: 900;
}

.pub-title {
  margin: 0;
  font-size: 1.16rem;
  line-height: 1.35;
}

.pub-authors,
.pub-venue {
  margin: 8px 0 0;
  color: var(--muted);
}

.pub-authors strong {
  color: var(--text);
}

.pub-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.pub-actions a,
.details-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 34px;
  padding: 0 11px;
  border-radius: 999px;
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 900;
}

.pub-actions a {
  border: 1px solid var(--border);
  background: var(--bg-soft);
}

.pub-details {
  display: none;
  margin-top: 16px;
  padding: 16px;
  border-left: 3px solid var(--accent);
  background: var(--bg-soft);
  color: var(--text);
}

.pub-details.is-open {
  display: block;
}

.pub-details pre {
  overflow: auto;
  margin: 0;
  white-space: pre-wrap;
  font-size: 0.82rem;
  line-height: 1.5;
}

.pub-media {
  align-self: stretch;
  overflow: hidden;
  min-height: 160px;
  border-radius: var(--radius);
  background: var(--bg-soft);
}

.pub-media img,
.pub-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-placeholder {
  display: grid;
  width: 100%;
  height: 100%;
  place-items: center;
  color: var(--accent-strong);
  font-family: Newsreader, Georgia, serif;
  font-size: 3rem;
  font-weight: 700;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.project-card {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-soft);
}

.project-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-soft);
}

.project-media video,
.project-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-body {
  padding: 20px;
}

.project-body h3 {
  margin-bottom: 12px;
}

.project-body ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.teaching-list {
  display: grid;
  gap: 12px;
}

.teaching-item {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 22px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
}

.teaching-term {
  color: var(--gold);
  font-weight: 900;
}

.teaching-courses {
  display: grid;
  gap: 10px;
}

.course-title {
  margin: 0;
  font-weight: 800;
}

.course-meta {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 34px 0 52px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.92rem;
}

.footer p {
  margin: 0;
}

.footer a {
  font-weight: 900;
  white-space: nowrap;
}

@media (max-width: 980px) {
  .topbar {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    flex-basis: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

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

  .hero {
    min-height: auto;
    padding-top: 32px;
  }

  .hero-copy,
  .profile-panel {
    grid-column: auto;
    grid-row: auto;
  }

  .profile-panel {
    order: -1;
  }

  .hero-about-card {
    grid-template-columns: 1fr;
  }

  .profile-panel {
    max-width: 430px;
  }

  .about-grid {
    gap: 28px;
  }

  .pub-media {
    min-height: 230px;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  :root {
    --nav-height: 116px;
  }

  body {
    font-size: 15px;
  }

  .section-shell {
    width: min(100% - 28px, var(--max-width));
  }

  .topbar {
    padding: 12px 14px;
    gap: 12px;
  }

  .brand span:last-child {
    display: none;
  }

  .nav-links {
    gap: 16px;
  }

  .nav-links a {
    font-size: 0.86rem;
  }

  .lang-switch {
    min-width: 56px;
  }

  main {
    padding-top: 22px;
  }

  .hero {
    padding-bottom: 36px;
  }

  h1 {
    font-size: clamp(3.3rem, 18vw, 5rem);
    white-space: normal;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .profile-panel {
    max-width: none;
  }

  .about-grid,
  .section-shell:not(.hero):not(.footer) {
    padding: 56px 0;
  }

  .section-heading.horizontal {
    align-items: flex-start;
    flex-direction: column;
  }

  .filter-pills {
    justify-content: flex-start;
  }

  .timeline-item {
    grid-template-columns: 90px minmax(0, 1fr);
    gap: 12px;
  }

  .timeline-item::before,
  .timeline-item::after {
    left: 90px;
  }

  .timeline-text {
    padding-left: 14px;
  }

  .presentation-group,
  .service-group {
    padding: 18px;
  }

  .publication-card {
    padding: 16px;
  }

  .pub-media {
    min-height: 190px;
  }

  .teaching-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .footer {
    align-items: flex-start;
    flex-direction: column;
  }
}