:root {
  color-scheme: light;
  --ink: #111923;
  --muted: #53606d;
  --quiet: #788391;
  --line: #cfd7df;
  --paper: #fbfaf7;
  --paper-deep: #f2eee6;
  --navy: #12325a;
  --navy-deep: #0d2748;
  --green: #5f7b62;
  --rust: #a75f3b;
  --shadow: 0 24px 70px rgba(18, 39, 72, 0.16);
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.96), rgba(251, 250, 247, 0.84) 45%, rgba(242, 238, 230, 0.7)),
    radial-gradient(circle at 83% 12%, rgba(95, 123, 98, 0.16), transparent 28rem),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.36;
  background-image:
    linear-gradient(27deg, transparent 0 46%, rgba(18, 50, 90, 0.13) 47% 48%, transparent 49%),
    linear-gradient(153deg, transparent 0 44%, rgba(18, 50, 90, 0.12) 45% 46%, transparent 47%),
    linear-gradient(90deg, transparent 0 47%, rgba(95, 123, 98, 0.09) 48% 49%, transparent 50%);
  background-size: 170px 130px, 210px 160px, 130px 110px;
  background-position: 10% 0, 86% 3%, 52% 8%;
  mask-image: linear-gradient(to bottom, black 0, transparent 54%);
  pointer-events: none;
}

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

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  transform: translateY(-150%);
  background: var(--navy);
  color: white;
  padding: 0.55rem 0.8rem;
  z-index: 10;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header,
main,
.site-footer {
  width: min(1120px, calc(100% - 44px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 1.25rem;
  padding: 22px 0 0;
}

.nav-links {
  display: flex;
  gap: clamp(1rem, 3vw, 2.2rem);
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

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

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 250px;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  min-height: 510px;
  padding: clamp(34px, 6vw, 58px) 0 38px;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--navy);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: 0;
}

h1 {
  margin-bottom: 0.75rem;
  font-size: clamp(3.1rem, 6vw, 5.25rem);
}

.rule {
  width: 82px;
  height: 3px;
  margin-bottom: 1.2rem;
  background: var(--navy);
}

.role {
  margin-bottom: 1.25rem;
  color: #35414f;
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  line-height: 1.42;
}

.intro {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1rem, 1.45vw, 1.12rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 1.4rem;
  margin-top: 1.65rem;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  font-weight: 650;
}

.button.primary {
  gap: 0.65rem;
  padding: 0.58rem 0.95rem;
  background: var(--navy);
  color: white;
  box-shadow: 0 14px 32px rgba(18, 50, 90, 0.2);
}

.button.primary:hover {
  background: var(--navy-deep);
  color: white;
}

.button.text {
  color: var(--navy);
}

.portrait-wrap {
  position: relative;
  margin: 0;
  align-self: center;
  min-height: 0;
}

.portrait-wrap::before {
  content: "";
  position: absolute;
  inset: 18px -12px -12px 12px;
  border: 1px solid rgba(18, 50, 90, 0.18);
  background: rgba(255, 255, 255, 0.52);
}

.portrait-wrap img {
  position: relative;
  display: block;
  width: 100%;
  height: 330px;
  min-height: 0;
  object-fit: cover;
  object-position: 52% 54%;
  box-shadow: var(--shadow);
}

.section {
  padding: 2.5rem 0;
}

.section-heading {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 1.35rem;
  margin-bottom: 1.45rem;
}

.section-heading h2 {
  margin: 0;
  color: var(--navy);
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 750;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section-heading span {
  height: 1px;
  background: var(--line);
}

.feature-item,
.teaching-item,
.materials details,
.contact {
  border-top: 1px solid rgba(83, 96, 109, 0.22);
}

.feature-item {
  max-width: 820px;
  padding-top: 1.5rem;
}

.item-kicker {
  margin-bottom: 0.65rem;
  color: var(--muted);
  font-style: italic;
}

.feature-item h3 {
  max-width: 800px;
  margin-bottom: 1.05rem;
  font-size: clamp(1.65rem, 3vw, 2.35rem);
}

.feature-item p {
  max-width: 760px;
  color: var(--muted);
}

.inline-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 680;
}

.teaching-list {
  display: grid;
  gap: 0;
}

.teaching-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem;
  align-items: baseline;
  padding: 1.35rem 0;
}

.teaching-item h3 {
  margin-bottom: 0.25rem;
  font-size: clamp(1.45rem, 2.5vw, 1.95rem);
}

.teaching-item p {
  margin-bottom: 0;
  color: var(--muted);
}

.materials {
  padding-top: 0.4rem;
}

.materials details {
  padding: 0.9rem 0;
}

.materials summary {
  cursor: pointer;
  color: var(--navy);
  font-weight: 720;
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem 1rem;
  margin-top: 1.05rem;
}

.material-grid a {
  display: block;
  padding: 0.72rem 0;
  border-bottom: 1px solid rgba(83, 96, 109, 0.18);
  color: var(--muted);
  font-size: 0.96rem;
}

.material-grid a:hover {
  color: var(--navy);
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: end;
  margin-top: 2.2rem;
  padding-top: 2rem;
}

.contact h2 {
  max-width: 620px;
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
}

.contact-links {
  display: grid;
  gap: 0.6rem;
  justify-items: end;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 2.2rem 0 2.8rem;
  border-top: 1px solid rgba(83, 96, 109, 0.22);
  color: var(--quiet);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .portrait-wrap {
    max-width: 300px;
    min-height: 0;
  }

  .portrait-wrap img {
    height: 360px;
  }

  .teaching-item,
  .contact {
    grid-template-columns: 1fr;
  }

  .contact-links {
    justify-items: start;
  }

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

@media (max-width: 620px) {
  body {
    font-size: 16px;
    line-height: 1.55;
  }

  .site-header,
  main,
  .site-footer {
    width: min(100% - 28px, 1120px);
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding-top: 16px;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
    gap: 0.65rem;
    font-size: 0.7rem;
  }

  .hero {
    gap: 1rem;
    padding-top: 1.25rem;
    padding-bottom: 2rem;
  }

  h1 {
    font-size: 2.65rem;
  }

  .eyebrow {
    margin-bottom: 0.7rem;
    font-size: 0.66rem;
    letter-spacing: 0.12em;
  }

  .rule {
    width: 68px;
    margin-bottom: 0.9rem;
  }

  .role {
    margin-bottom: 1rem;
    font-size: 1.02rem;
  }

  .intro {
    font-size: 1rem;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 0.85rem 1.2rem;
    margin-top: 1.25rem;
  }

  .button {
    justify-content: center;
  }

  .button.primary {
    grid-column: 1 / -1;
  }

  .button.text {
    justify-content: center;
    min-height: 36px;
  }

  .portrait-wrap {
    order: -1;
    justify-self: start;
    width: 104px;
    max-width: 104px;
    margin-bottom: 0.25rem;
  }

  .portrait-wrap img {
    width: 104px;
    height: 104px;
    min-height: 0;
    border-radius: 50%;
    object-position: 52% 62%;
    box-shadow: 0 14px 30px rgba(18, 39, 72, 0.18);
  }

  .portrait-wrap::before {
    display: none;
  }

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

  .site-footer {
    flex-direction: column;
  }
}