:root {
  --ink: #202124;
  --muted: #5c6670;
  --quiet: #7d858c;
  --paper: #fffdf8;
  --panel: #ffffff;
  --soft: #f3efe5;
  --line: #ded6c7;
  --link: #245f9f;
  --link-dark: #17466f;
  --accent: #9c4f2b;
  --green: #4f7f68;
  --shadow: 0 18px 45px rgba(55, 43, 24, 0.09);
  color-scheme: light;
  font-family: Georgia, "Times New Roman", serif;
}

[data-theme="dark"] {
  --ink: #ece6d9;
  --muted: #aba294;
  --quiet: #8b8378;
  --paper: #15130e;
  --panel: #1f1b15;
  --soft: #29241c;
  --line: #3a3326;
  --link: #82b4ea;
  --link-dark: #aacdf3;
  --accent: #e0926a;
  --green: #82bb9f;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.45);
  color-scheme: dark;
}

[data-theme="dark"] body {
  background:
    linear-gradient(180deg, rgba(41, 36, 28, 0.6), rgba(21, 19, 14, 0) 420px),
    var(--paper);
}

[data-theme="dark"] .site-header {
  background: rgba(21, 19, 14, 0.9);
}

[data-theme="dark"] a {
  text-decoration-color: rgba(130, 180, 234, 0.4);
}

[data-theme="dark"] .icon-links a:hover {
  border-color: #5a5240;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  background:
    linear-gradient(180deg, rgba(243, 239, 229, 0.78), rgba(255, 253, 248, 0) 420px),
    var(--paper);
  color: var(--ink);
  margin: 0;
}

a {
  color: var(--link);
  text-decoration-color: rgba(36, 95, 159, 0.35);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--link-dark);
  text-decoration-color: currentColor;
}

.site-header {
  align-items: center;
  background: rgba(255, 253, 248, 0.94);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 24px;
  justify-content: space-between;
  min-height: 62px;
  padding: 14px clamp(20px, 4vw, 54px);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
}

.brand {
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: flex-end;
}

.nav-links a {
  color: var(--muted);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
}

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

.header-right {
  align-items: center;
  display: flex;
  gap: 16px;
}

.theme-toggle {
  align-items: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  flex: none;
  height: 38px;
  justify-content: center;
  padding: 0;
  transition:
    background 150ms ease,
    border-color 150ms ease,
    color 150ms ease,
    transform 150ms ease;
  width: 38px;
}

.theme-toggle:hover {
  background: var(--soft);
  color: var(--accent);
  transform: translateY(-1px);
}

.theme-toggle svg {
  display: block;
  fill: none;
  height: 18px;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
  width: 18px;
}

.theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

.page-shell {
  display: grid;
  gap: clamp(34px, 6vw, 76px);
  grid-template-columns: minmax(220px, 310px) minmax(0, 850px);
  margin: 0 auto;
  max-width: 1240px;
  padding: clamp(34px, 6vw, 74px) clamp(20px, 4vw, 54px) 80px;
}

.profile-card {
  align-self: start;
  position: sticky;
  top: 92px;
}

.profile-photo {
  aspect-ratio: 1;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  display: block;
  object-fit: cover;
  width: 100%;
}

.profile-info {
  margin-top: 22px;
}

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

h1 {
  font-size: clamp(2.35rem, 4vw, 3.45rem);
  line-height: 0.95;
  margin-bottom: 12px;
}

.profile-info h1 {
  font-size: clamp(1.75rem, 2.7vw, 2.25rem);
  line-height: 1.05;
  white-space: nowrap;
}

h2 {
  font-size: clamp(1.65rem, 3vw, 2.45rem);
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.13;
  margin-bottom: 0;
}

h3 {
  font-size: 1.08rem;
  line-height: 1.32;
  margin-bottom: 8px;
}

h4 {
  font-size: 1.02rem;
  line-height: 1.35;
  margin: 0 0 6px;
}

.profile-info p,
.intro-copy p,
.section-block p {
  color: var(--muted);
  font-size: 1.03rem;
  line-height: 1.72;
}

.profile-links {
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
  padding-top: 18px;
}

.icon-links a {
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  display: inline-flex;
  height: 40px;
  justify-content: center;
  padding: 0;
  text-decoration: none;
  transition:
    background 150ms ease,
    border-color 150ms ease,
    color 150ms ease,
    transform 150ms ease;
  width: 40px;
}

.icon-links a:hover {
  background: var(--soft);
  border-color: #c9bda9;
  color: var(--link-dark);
  transform: translateY(-1px);
}

.icon-links svg {
  display: block;
  fill: none;
  height: 21px;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
  width: 21px;
}

.content-column {
  min-width: 0;
}

.intro-section,
.section-block {
  border-bottom: 1px solid var(--line);
  padding-bottom: clamp(38px, 6vw, 62px);
}

.section-block {
  padding-top: clamp(38px, 6vw, 62px);
}

.eyebrow {
  color: var(--accent);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.intro-copy {
  display: grid;
  gap: 16px;
  margin-top: 0;
}

.intro-copy p {
  font-size: clamp(1.12rem, 2vw, 1.34rem);
  line-height: 1.68;
  margin-bottom: 0;
}

.section-heading {
  margin-bottom: 24px;
}

.section-note {
  margin-bottom: 24px;
}

.interest-list {
  display: grid;
  gap: 10px 28px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  list-style: disc;
  margin: 0;
  padding-left: 20px;
}

.interest-list li::marker {
  color: var(--accent);
}

.interest-list a {
  font-weight: 700;
}

.note-card,
.blog-list article,
.publication-list article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.note-card p,
.publication-list p {
  font-size: 0.99rem;
  margin-bottom: 0;
}

.blog-list,
.publication-list {
  display: grid;
  gap: 14px;
}

.note-meta {
  color: var(--green);
  display: block;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  line-height: 1.35;
  text-transform: uppercase;
}

.note-meta--new {
  color: #d12f2f;
}

.split-block {
  align-items: start;
  display: grid;
  gap: 24px;
  grid-template-columns: 220px minmax(0, 1fr);
}

.note-card {
  border-left: 5px solid var(--green);
}

.note-card a {
  display: inline-flex;
  font-weight: 700;
  margin-top: 14px;
}

.blog-list article {
  border-left: 5px solid var(--accent);
}

.blog-list h3 {
  margin-bottom: 8px;
}

.blog-list p:last-child {
  margin-bottom: 0;
}

.publication-list article {
  padding: 18px 20px;
}

.publication-sections {
  display: grid;
  gap: 30px;
}

.publication-group {
  display: grid;
  gap: 14px;
}

.publication-group > h3 {
  border-bottom: 1px solid var(--line);
  font-size: 1.12rem;
  margin-bottom: 0;
  padding-bottom: 10px;
}

.publication-meta {
  color: var(--green);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.education-block {
  border-bottom: 0;
}

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

.education-item {
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 18px;
  grid-template-columns: 118px minmax(0, 1fr);
  padding: 18px 20px;
}

.education-meta {
  color: var(--green);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.education-item h3 {
  margin-bottom: 4px;
}

.education-item p:last-child {
  color: var(--muted);
  font-size: 0.99rem;
  line-height: 1.55;
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .page-shell {
    grid-template-columns: 1fr;
    max-width: 760px;
  }

  .profile-card {
    display: grid;
    gap: 20px;
    grid-template-columns: 170px minmax(0, 1fr);
    position: static;
  }

  .profile-photo {
    grid-row: span 2;
  }

  .profile-info {
    margin-top: 0;
  }

  .profile-links {
    align-self: start;
    border-top: 0;
    margin-top: 0;
    padding-top: 0;
  }

  .split-block {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    position: static;
  }

  .nav-links {
    gap: 10px 14px;
    justify-content: flex-start;
  }

  .page-shell {
    padding-top: 28px;
  }

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

  .profile-photo {
    grid-row: auto;
    max-width: 280px;
  }

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

  .education-item {
    align-items: start;
    grid-template-columns: 1fr;
    padding: 16px;
  }
}