.app-shell {
  color-scheme: light;
  --ink: #1c2028;
  --muted: #667085;
  --line: #d9dee7;
  --paper: #f8fafc;
  --panel: #ffffff;
  --header: rgba(248, 250, 252, 0.9);
  --nav-hover: #eef3f8;
  --band: #f2f5f1;
  --date-bg: #fff1d6;
  --blue: #1f6f78;
  --rose: #c03a6b;
  --amber: #8b6818;
  --paper-accent: var(--blue);
  --soft-panel: #fbfcfe;
  --shadow: 0 18px 46px rgba(28, 32, 40, 0.1);
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
}

.theme-dark {
  color-scheme: dark;
  --ink: #edf2f7;
  --muted: #a7b0c0;
  --line: #2b3443;
  --paper: #111827;
  --panel: #182233;
  --header: rgba(17, 24, 39, 0.9);
  --nav-hover: #243149;
  --band: #151f2d;
  --date-bg: #352918;
  --blue: #78d3db;
  --rose: #ff8fbe;
  --amber: #f5c66f;
  --paper-accent: var(--blue);
  --soft-panel: #141e2c;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Manrope, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: var(--blue);
  font-weight: 700;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.22em;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(217, 222, 231, 0.85);
  background: var(--header);
  backdrop-filter: blur(18px);
}

.topbar {
  width: min(1120px, calc(100% - 32px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding: 8px 0;
}

.brand {
  color: var(--ink);
  font-size: 1.2rem;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  overflow-x: auto;
}

.nav-button {
  min-height: 40px;
  border: 0;
  border-radius: 8px;
  padding: 0 14px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

.nav-button:hover,
.nav-button.is-active {
  background: var(--nav-hover);
  color: var(--blue);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0;
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 1.16rem;
  font-weight: 800;
  line-height: 1;
  flex: 0 0 auto;
  margin-left: 0;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.theme-toggle:hover {
  background: var(--nav-hover);
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-1px);
}

main {
  min-height: calc(100vh - 148px);
}

.hero {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 44px;
  display: grid;
  grid-template-columns: minmax(230px, 330px) minmax(0, 1fr);
  align-items: center;
  gap: 48px;
}

.hero-media {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--panel);
}

.hero-media img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h3 {
  margin: 0;
  line-height: 1.15;
  font-size: 1.08rem;
}

.lead {
  font-size: 1.22rem;
}

.hero-copy strong {
  color: var(--rose);
}

.quick-links,
.item-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.quick-links a,
.item-links a {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 13px;
  background: var(--panel);
  color: var(--ink);
  text-decoration: none;
}

.quick-links a:hover,
.item-links a:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.section-band,
.content-section {
  padding: 48px 0 64px;
}

.section-band {
  border-top: 1px solid var(--line);
  background: var(--band);
}

.section-heading,
.news-list,
.paper-list,
.teaching {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.section-heading {
  margin-bottom: 26px;
}

.section-heading p {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.05rem;
}

.news-list {
  display: grid;
  gap: 14px;
}

.news-item,
.paper-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.news-item {
  min-height: 72px;
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
}

.news-item p {
  margin: 0;
}

.date-pill {
  width: max-content;
  border-radius: 999px;
  padding: 5px 10px;
  background: var(--date-bg);
  color: var(--amber);
  font-size: 0.82rem;
  font-weight: 800;
}

.paper-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.paper-card {
  position: relative;
  border-color: var(--line);
  background: var(--soft-panel);
  padding: 14px 16px 13px;
}

.paper-card h3 {
  color: var(--paper-accent);
  font-size: 0.98rem;
  line-height: 1.28;
}

.authors,
.venue {
  margin: 6px 0 0;
}

.venue,
.authors {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.paper-card .item-links {
  margin-top: 10px;
  gap: 7px;
}

.paper-card .item-links a {
  min-height: 30px;
  padding: 0 10px;
  font-size: 0.86rem;
  background: transparent;
}

.teaching {
  max-width: 900px;
}

.teaching h3 {
  margin-top: 28px;
}

.teaching ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

.talk-simple-list {
  margin-top: 0;
}

.talk-simple-list li + li {
  margin-top: 10px;
}

.talk-tag {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  margin-right: 8px;
  border-radius: 6px;
  padding: 0 7px;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.talk-tag-talk {
  background: #ffe6f1;
  color: var(--rose);
}

.talk-tag-poster {
  background: #e5f0ff;
  color: var(--blue);
}

.theme-dark .talk-tag-talk {
  background: #3a1d2c;
}

.theme-dark .talk-tag-poster {
  background: #192b46;
}

@media (max-width: 760px) {
  .topbar {
    min-height: 86px;
    align-items: center;
    gap: 8px 14px;
  }

  .brand {
    order: 1;
  }

  .theme-toggle {
    order: 2;
    margin-left: auto;
  }

  .nav-links {
    order: 3;
    width: 100%;
    margin-left: 0;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 32px;
    gap: 28px;
  }

  .hero-media {
    max-width: 280px;
  }

  .lead {
    font-size: 1.08rem;
  }

  .paper-list {
    grid-template-columns: 1fr;
  }

  .news-item {
    grid-template-columns: 1fr;
  }

}