:root {
  --bg: #11110f;
  --panel: #1a1a17;
  --panel-soft: #151512;
  --text: #d9d4ca;
  --heading: #f1ede6;
  --body: #beb7ad;
  --muted: #9b948a;
  --line: rgba(241, 237, 230, 0.15);
  --accent: #9cc7bc;
  --accent-soft: #6f9b90;
  --blue: #9eb8df;
  --amber: #d7bd7e;
  --rose: #d7a19a;
  --accent-ink: #d5ebe5;
  --shadow: 0 26px 70px rgba(0, 0, 0, 0.46);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 78% 18%, rgba(156, 199, 188, 0.07), transparent 34vw),
    radial-gradient(circle at 18% 72%, rgba(158, 184, 223, 0.045), transparent 28vw),
    radial-gradient(circle at 90% 88%, rgba(215, 189, 126, 0.035), transparent 26vw),
    var(--bg);
  color: var(--text);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.55;
  overflow-x: hidden;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px max(28px, calc((100vw - 1120px) / 2));
  background: linear-gradient(180deg, rgba(17, 17, 15, 0.92), rgba(17, 17, 15, 0.62));
  border-bottom: 1px solid rgba(241, 237, 230, 0.07);
  backdrop-filter: blur(22px);
}

.brand {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--heading);
}

.header-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  min-width: 0;
}

.nav {
  display: flex;
  flex-wrap: nowrap;
  justify-content: flex-end;
  gap: 4px;
  padding: 5px;
  border: 1px solid rgba(241, 237, 230, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.035);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  color: #aaa39a;
  font-size: 13px;
  white-space: nowrap;
}

.nav a {
  padding: 7px 11px;
  border-radius: 999px;
  border-bottom: 0;
  transition: background 160ms ease, color 160ms ease;
}

.nav a:hover {
  color: var(--heading);
  background: rgba(255, 255, 255, 0.065);
}

.language-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  min-width: 58px;
  padding: 6px 12px;
  border: 1px solid rgba(215, 189, 126, 0.34);
  border-radius: 999px;
  background: rgba(215, 189, 126, 0.08);
  color: #eadbb2;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  white-space: nowrap;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.language-toggle:hover {
  border-color: rgba(215, 189, 126, 0.66);
  background: rgba(215, 189, 126, 0.14);
  color: #fff2c9;
}

.section {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 76px 28px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
  gap: clamp(44px, 6vw, 84px);
  align-items: center;
  min-height: 82vh;
}

.hero-copy {
  order: 2;
}

.hero-copy,
.profile-panel,
.section-body,
.timeline,
.publication-list,
.education-list,
.project-grid,
.expertise-grid,
.skills-grid {
  min-width: 0;
}

.eyebrow,
.section-kicker,
.time,
.stack {
  color: var(--accent);
  font-size: 13.5px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

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

h1 {
  max-width: 780px;
  margin-bottom: 22px;
  font-size: clamp(48px, 7vw, 88px);
  line-height: 0.95;
  color: var(--heading);
  font-weight: 820;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 50px);
  line-height: 1.05;
  color: #e7e2d9;
  font-weight: 780;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.25;
  color: #e2ddd4;
}

.lead {
  max-width: 760px;
  color: var(--body);
  font-size: clamp(21px, 2.4vw, 30px);
  line-height: 1.28;
}

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

.footer-links {
  align-self: start;
  display: grid;
  grid-template-columns: repeat(2, minmax(170px, 1fr));
  gap: 12px;
  margin-top: 8px;
}

.button,
.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 10px 16px;
  border: 1px solid rgba(241, 237, 230, 0.16);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.035);
  color: #ddd7cd;
  font-size: 14px;
  font-weight: 700;
}

.button.primary {
  border-color: rgba(156, 199, 188, 0.5);
  background: rgba(156, 199, 188, 0.13);
  color: var(--accent-ink);
}

.button:hover,
.footer-links a:hover {
  border-color: var(--accent);
  color: var(--accent-ink);
  background: rgba(156, 199, 188, 0.08);
}

.button.primary:hover {
  color: #eaf3ef;
}

.profile-panel {
  order: 1;
  justify-self: start;
  display: grid;
  gap: 20px;
  max-width: 340px;
}

.portrait-ring {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  padding: 5px;
  background: rgba(214, 184, 122, 0.07);
  border: 1.5px solid rgba(214, 184, 122, 0.58);
  box-shadow:
    0 0 0 7px rgba(214, 184, 122, 0.052),
    0 0 0 12px rgba(241, 218, 166, 0.03),
    0 24px 68px rgba(0, 0, 0, 0.48),
    0 0 42px rgba(214, 184, 122, 0.11);
}

.portrait-ring::after {
  content: "";
  position: absolute;
  inset: -9px;
  border-radius: 50%;
  border: 1px solid rgba(241, 218, 166, 0.1);
  pointer-events: none;
}

.profile-panel img {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  object-fit: cover;
  background: var(--panel);
  border: 5px solid #11110f;
  box-shadow: none;
}

.role {
  margin-bottom: 0;
  font-weight: 800;
  color: #e4ded5;
}

.program {
  margin-bottom: 6px;
  color: #e4ded5;
  font-size: clamp(13px, 1.55vw, 16px);
  font-weight: 800;
  line-height: 1.25;
  white-space: nowrap;
}

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

.location-link {
  color: var(--muted);
  transition: color 160ms ease;
}

.location-link:hover {
  color: var(--accent-ink);
}

.split {
  display: grid;
  grid-template-columns: minmax(240px, 0.42fr) minmax(0, 0.58fr);
  gap: 56px;
  border-top: 1px solid var(--line);
}

.section-body p,
.timeline-item p,
.publication p,
.project-grid p,
.education-list p,
.expertise-grid p {
  color: #aaa399;
}

.section-body strong {
  color: #eee8de;
  font-weight: 760;
}

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

.skills-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 18% 18%, rgba(158, 184, 223, 0.08), transparent 30vw),
    radial-gradient(circle at 84% 34%, rgba(215, 189, 126, 0.055), transparent 28vw),
    linear-gradient(180deg, rgba(255, 255, 255, 0.028), rgba(156, 199, 188, 0.025));
}

.skills-inner {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 76px 28px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.skill-card {
  min-height: 190px;
  padding: 20px;
  border: 1px solid rgba(241, 237, 230, 0.12);
  border-radius: 8px;
  background: rgba(17, 17, 15, 0.58);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035);
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 16px 0 0;
  list-style: none;
}

.skill-list li {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 10px;
  border: 1px solid rgba(241, 237, 230, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.035);
  color: #bdb6ac;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.2;
}

.expertise-grid > div,
.project-grid > article,
.publication,
.education-list > article,
.timeline-item {
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.expertise-card,
.project-card {
  position: relative;
}

.expertise-card::before,
.project-card::before {
  content: "";
  display: block;
  width: 74px;
  height: 5px;
  margin-bottom: 20px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(214, 184, 122, 0.08);
}

.agent-card::before,
.code-card::before {
  background: linear-gradient(90deg, var(--accent), var(--blue));
}

.sequence-card::before,
.product-card::before {
  background: linear-gradient(90deg, var(--blue), var(--amber));
}

.systems-card::before,
.learning-card::before {
  background: linear-gradient(90deg, var(--amber), var(--rose));
}

.timeline,
.publication-list,
.education-list {
  display: grid;
  gap: 28px;
}

.section-heading {
  max-width: 640px;
  margin-bottom: 32px;
}

.publication {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 28px;
}

.publication h3,
.publication p,
.publication a {
  grid-column: 2;
}

.publication .time {
  grid-column: 1;
  grid-row: 1 / span 3;
}

.publication a,
.project-card a {
  width: fit-content;
  color: var(--accent);
  font-weight: 800;
}

.publication h3 a {
  color: #e2ddd4;
}

.publication h3 a:hover {
  color: #d5ebe5;
}

.paper-id {
  color: #b8d5cd !important;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13.5px;
}

.paper-id:hover {
  color: #edf8f5 !important;
}

.project-card a {
  display: inline-flex;
  margin-top: 8px;
  color: #c5d9f4;
  font-size: 14px;
}

.project-card a:hover {
  color: #edf4ff;
}

.project-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.footer {
  display: grid;
  grid-template-columns: minmax(320px, 0.56fr) minmax(320px, 0.44fr);
  gap: 54px;
  align-items: start;
  max-width: 1120px;
  margin: 0 auto;
  padding: 76px 28px 44px;
  border-top: 1px solid var(--line);
}

.footer h2 {
  max-width: 640px;
  font-size: clamp(28px, 4vw, 48px);
}

.footer-links a {
  justify-content: center;
  width: 100%;
  min-height: 48px;
  text-align: center;
}

.copyright {
  grid-column: 1 / -1;
  margin-top: 26px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    max-width: 100vw;
  }

  .header-controls {
    width: 100%;
  }

  .nav {
    flex: 1;
    justify-content: flex-start;
    width: 100%;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .nav::-webkit-scrollbar {
    display: none;
  }

  .hero,
  .split,
  .footer {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 32px;
    min-height: auto;
    padding-top: 34px;
    padding-bottom: 30px;
  }

  .hero-copy,
  .profile-panel {
    order: initial;
  }

  .profile-panel {
    max-width: 320px;
  }

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

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

  .publication h3,
  .publication p,
  .publication a,
  .publication .time {
    grid-column: 1;
    grid-row: auto;
  }
}

@media (max-width: 600px) {
  .section,
  .footer,
  .skills-inner {
    width: 390px;
    max-width: 100%;
    margin-left: 0;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  .site-header {
    width: 390px;
    max-width: 100%;
    padding-left: 20px;
    padding-right: 20px;
  }

  .nav {
    max-width: 100%;
    font-size: 12.5px;
  }

  .nav a {
    padding: 7px 8px;
  }

  .language-toggle {
    min-width: 52px;
    padding: 6px 10px;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
  }

  .footer-links {
    grid-template-columns: 1fr;
    width: 100%;
  }

  .button,
  .footer-links a {
    justify-content: center;
    width: 100%;
  }
}

@media (max-width: 420px) {
  .nav {
    font-size: 13px;
  }

  .lead {
    font-size: 22px;
  }

  h1 {
    font-size: 44px;
  }

  .profile-panel {
    max-width: 260px;
  }
}