:root {
  color-scheme: light;
  --bg: #f7f8fb;
  --surface: #ffffff;
  --text: #1d2430;
  --muted: #5c6675;
  --line: #d9dee8;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --ink: #111827;
  --shadow: 0 18px 55px rgba(17, 24, 39, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(217, 222, 232, 0.8);
  background: rgba(247, 248, 251, 0.88);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1120px, calc(100% - 40px));
  min-height: 68px;
  margin: 0 auto;
}

.brand {
  font-weight: 800;
}

.nav-links {
  display: flex;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover {
  color: var(--accent);
}

main {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 42px;
  align-items: center;
  min-height: calc(100vh - 68px);
  padding: 58px 0 46px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  color: var(--ink);
  font-size: clamp(38px, 7vw, 74px);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  color: var(--ink);
  font-size: 30px;
  line-height: 1.2;
}

h3 {
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 18px;
}

.hero-text {
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions,
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button,
.contact-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 18px;
  font-weight: 700;
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: white;
}

.button.primary:hover {
  background: var(--accent-strong);
}

.button.secondary,
.contact-links a {
  background: var(--surface);
}

.button.secondary:hover,
.contact-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.profile-panel,
.project-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.profile-panel {
  padding: 26px;
}

.avatar {
  display: grid;
  width: 92px;
  height: 92px;
  margin-bottom: 28px;
  place-items: center;
  border-radius: 50%;
  background: #e2f3ef;
  color: var(--accent-strong);
  font-size: 28px;
  font-weight: 900;
}

dl {
  display: grid;
  gap: 18px;
  margin: 0;
}

dt {
  color: var(--muted);
  font-size: 13px;
}

dd {
  margin: 3px 0 0;
  color: var(--ink);
  font-weight: 700;
}

.section {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 42px;
  border-top: 1px solid var(--line);
  padding: 70px 0;
}

.section-body,
.timeline p,
.project-card p,
.skill-groups p,
.contact p {
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 30px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 24px;
}

.timeline-meta {
  color: var(--accent);
  font-weight: 800;
}

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

.project-card {
  padding: 22px;
}

.project-card a {
  color: var(--accent);
  font-weight: 800;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.skill-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  padding: 7px 14px;
  color: var(--ink);
  font-weight: 700;
}

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

.skill-groups > div {
  border-left: 3px solid var(--accent);
  padding-left: 18px;
}

.contact {
  padding-bottom: 90px;
}

.publication-list,
.meeting-list {
  margin: 0;
  padding-left: 22px;
  color: var(--muted);
}

.publication-list {
  display: grid;
  gap: 16px;
}

.meeting-list {
  display: grid;
  gap: 10px;
}

.publication-list em {
  color: var(--ink);
  font-style: normal;
  font-weight: 700;
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.profile-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 8px 14px;
  color: var(--accent);
  font-weight: 800;
}

.profile-links a:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.apparatus-project {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 24px;
  align-items: start;
}

.apparatus-stage {
  position: relative;
  height: 560px;
  min-height: 470px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(236, 241, 246, 0.76)),
    radial-gradient(circle at 20% 18%, rgba(15, 118, 110, 0.14), transparent 28%),
    #eef2f6;
  box-shadow: var(--shadow);
  touch-action: none;
}

.apparatus-stage canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.apparatus-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-weight: 700;
}

.apparatus-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-left: 3px solid var(--accent);
  padding-left: 22px;
}

.apparatus-copy p {
  color: var(--muted);
}

.apparatus-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.apparatus-stats span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  padding: 6px 12px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

@media (max-width: 850px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 14px 0;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
  }

  .hero,
  .section,
  .timeline-item,
  .project-grid,
  .skill-groups,
  .apparatus-project {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  h1 {
    font-size: 42px;
  }

  .section {
    gap: 24px;
    padding: 52px 0;
  }

  .apparatus-stage {
    height: 390px;
    min-height: 390px;
  }

  .apparatus-copy {
    border-left: 0;
    border-top: 3px solid var(--accent);
    padding: 20px 0 0;
  }
}

@media (max-width: 520px) {
  .nav,
  main {
    width: min(100% - 28px, 1120px);
  }

  .nav-links {
    font-size: 13px;
  }

  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 25px;
  }

  .hero-text {
    font-size: 16px;
  }

  .button,
  .contact-links a {
    width: 100%;
  }

  .apparatus-stage {
    height: 320px;
    min-height: 320px;
  }
}