:root {
  --navy-950: #071a34;
  --navy-900: #0b2345;
  --navy-800: #123564;
  --navy-700: #1a4d86;
  --orange-600: #d96a12;
  --orange-500: #ef7c00;
  --orange-100: #fff1df;
  --orange-800: #a04d00;
  --ink-900: #182230;
  --ink-700: #475569;
  --ink-500: #64748b;
  --line: #dce3ec;
  --surface: #ffffff;
  --surface-soft: #f5f7fa;
  --surface-blue: #edf4fb;
  --shadow-sm: 0 8px 24px rgba(7, 26, 52, 0.08);
  --shadow-lg: 0 20px 55px rgba(7, 26, 52, 0.14);
  --radius-sm: 0.75rem;
  --radius-md: 1.15rem;
  --radius-lg: 1.75rem;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink-900);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: var(--navy-700);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--orange-600);
}

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

:focus-visible {
  outline: 3px solid rgba(239, 124, 0, 0.55);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  padding: 0.65rem 0.95rem;
  border-radius: 0.5rem;
  background: var(--surface);
  color: var(--navy-900);
  box-shadow: var(--shadow-sm);
  transform: translateY(-180%);
}

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

.container {
  width: min(calc(100% - 2rem), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(220, 227, 236, 0.85);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--navy-950);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 0.8rem;
  background: linear-gradient(145deg, var(--navy-900), var(--navy-700));
  color: var(--surface);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.brand-text {
  display: grid;
  line-height: 1.16;
}

.brand-name {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-role {
  color: var(--ink-500);
  font-size: 0.78rem;
  font-weight: 600;
}

.menu-button {
  display: none;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: var(--surface);
  color: var(--navy-900);
  padding: 0.55rem 0.7rem;
  font: inherit;
  font-weight: 700;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  display: block;
  padding: 0.7rem 0.85rem;
  border-radius: 0.6rem;
  color: var(--ink-700);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: var(--surface-blue);
  color: var(--navy-900);
}

.site-nav a[aria-current="page"] {
  box-shadow: inset 0 -2px 0 var(--orange-500);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 8vw, 7rem) 0;
  background:
    radial-gradient(circle at 88% 18%, rgba(239, 124, 0, 0.18), transparent 24rem),
    linear-gradient(135deg, var(--navy-950), var(--navy-800));
  color: var(--surface);
}

.hero::after {
  content: "";
  position: absolute;
  right: -9rem;
  bottom: -11rem;
  width: 30rem;
  height: 30rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  box-shadow: 0 0 0 4rem rgba(255, 255, 255, 0.025), 0 0 0 8rem rgba(255, 255, 255, 0.02);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.75fr);
  align-items: center;
  gap: clamp(2.5rem, 6vw, 6rem);
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--orange-500);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.hero h1 {
  max-width: 780px;
  font-size: clamp(2.7rem, 6vw, 5.25rem);
}

.hero-lead {
  max-width: 720px;
  margin: 1.45rem 0 0;
  color: rgba(255, 255, 255, 0.83);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.72rem 1.08rem;
  border: 1px solid transparent;
  border-radius: 0.7rem;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--orange-500);
  color: var(--navy-950);
  box-shadow: 0 10px 28px rgba(239, 124, 0, 0.25);
}

.button-primary:hover {
  background: #ff9226;
  color: var(--navy-950);
}

.button-secondary {
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.07);
  color: var(--surface);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
  color: var(--surface);
}

.button-outline {
  border-color: var(--line);
  background: var(--surface);
  color: var(--navy-900);
}

.button-outline:hover {
  border-color: var(--navy-700);
  color: var(--navy-900);
  box-shadow: var(--shadow-sm);
}

.profile-frame {
  position: relative;
  justify-self: center;
  width: min(100%, 360px);
  padding: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 2rem;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-lg);
}

.profile-frame::before {
  content: "";
  position: absolute;
  inset: -0.8rem auto auto -0.8rem;
  width: 5.2rem;
  height: 5.2rem;
  border-top: 4px solid var(--orange-500);
  border-left: 4px solid var(--orange-500);
  border-radius: 1.2rem 0 0 0;
}

.profile-frame img {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 1.45rem;
  object-fit: cover;
  object-position: center top;
}

.section {
  padding: clamp(4rem, 7vw, 6.5rem) 0;
}

.section-soft {
  background: var(--surface-soft);
}

.section-blue {
  background: var(--surface-blue);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2.2rem;
}

.section-heading h2,
.content-heading {
  margin: 0;
  color: var(--navy-950);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 3.15rem);
  letter-spacing: -0.03em;
  line-height: 1.14;
}

.section-heading p,
.lead {
  margin: 1rem 0 0;
  color: var(--ink-700);
  font-size: 1.08rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.card {
  height: 100%;
  padding: 1.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.card-kicker {
  margin: 0 0 0.4rem;
  color: var(--orange-600);
  font-size: 0.75rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.card h3 {
  margin: 0;
  color: var(--navy-950);
  font-size: 1.18rem;
  line-height: 1.3;
}

.card p {
  margin: 0.75rem 0 0;
  color: var(--ink-700);
}

.card-link {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 800;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(270px, 0.8fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.focus-list,
.clean-list,
.link-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.focus-list {
  display: grid;
  gap: 0.85rem;
}

.focus-list li {
  position: relative;
  padding: 1rem 1rem 1rem 3.2rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--surface);
}

.focus-list li::before {
  content: "";
  position: absolute;
  top: 1.25rem;
  left: 1.15rem;
  width: 0.7rem;
  height: 0.7rem;
  border: 4px solid var(--orange-100);
  border-radius: 50%;
  background: var(--orange-500);
}

.focus-list strong {
  display: block;
  color: var(--navy-950);
}

.page-hero {
  padding: clamp(3.6rem, 7vw, 6.2rem) 0;
  background:
    linear-gradient(120deg, rgba(7, 26, 52, 0.97), rgba(18, 53, 100, 0.95)),
    radial-gradient(circle at 80% 10%, rgba(239, 124, 0, 0.3), transparent 22rem);
  color: var(--surface);
}

.page-hero h1 {
  max-width: 850px;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
}

.page-hero p {
  max-width: 760px;
  margin: 1.2rem 0 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.14rem;
}

.profile-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: clamp(2rem, 6vw, 5rem);
}

.prose p {
  margin: 0 0 1.2rem;
  color: var(--ink-700);
  font-size: 1.04rem;
}

.sidebar-card {
  position: sticky;
  top: 104px;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  background: var(--navy-950);
  color: var(--surface);
  box-shadow: var(--shadow-lg);
}

.sidebar-card h2 {
  margin: 0;
  font-size: 1.25rem;
}

.sidebar-card p {
  margin: 0.75rem 0 0;
  color: rgba(255, 255, 255, 0.75);
}

.sidebar-card a {
  color: #ffd3a3;
}

.link-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.link-list a {
  display: block;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  font-weight: 750;
  text-decoration: none;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.detail-block {
  padding: 1.4rem;
  border-left: 4px solid var(--orange-500);
  background: var(--surface-soft);
}

.detail-block h3 {
  margin: 0;
  color: var(--navy-950);
  font-size: 1.08rem;
}

.detail-block p {
  margin: 0.55rem 0 0;
  color: var(--ink-700);
}

.timeline {
  position: relative;
  display: grid;
  gap: 1.4rem;
  margin-top: 2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0.6rem;
  bottom: 0.6rem;
  left: 9.75rem;
  width: 2px;
  background: var(--line);
}

.timeline-item {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: 3.5rem;
  align-items: start;
}

.timeline-period {
  padding-top: 1.25rem;
  color: var(--navy-800);
  font-size: 0.9rem;
  font-weight: 850;
  text-align: right;
}

.timeline-content {
  position: relative;
  padding: 1.35rem 1.45rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.timeline-content::before {
  content: "";
  position: absolute;
  top: 1.55rem;
  left: -2.75rem;
  width: 0.8rem;
  height: 0.8rem;
  border: 5px solid var(--surface);
  border-radius: 50%;
  background: var(--orange-500);
  box-shadow: 0 0 0 2px var(--orange-500);
}

.timeline-content h3 {
  margin: 0;
  color: var(--navy-950);
  font-size: 1.15rem;
}

.timeline-content p {
  margin: 0.45rem 0 0;
  color: var(--ink-700);
}

.module-list {
  display: grid;
  gap: 0.75rem;
  margin: 0.9rem 0 0;
  padding: 0;
  list-style: none;
}

.module-list li {
  padding: 0.85rem 0.95rem;
  border-radius: 0.75rem;
  background: var(--surface-soft);
}

.module-code {
  display: inline-block;
  min-width: 7rem;
  color: var(--navy-800);
  font-weight: 850;
}

.module-list li.module-nonlecture {
  background: var(--orange-100);
  box-shadow: inset 0.25rem 0 0 var(--orange-500);
}

.module-nonlecture .module-code {
  color: var(--orange-800);
}

.module-tag {
  display: inline-block;
  margin-left: 0.4rem;
  padding: 0.1rem 0.55rem;
  border: 1px solid var(--orange-500);
  border-radius: 999px;
  background: var(--surface);
  color: var(--orange-800);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  vertical-align: 0.05rem;
  white-space: nowrap;
}

.module-legend {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0.9rem 0 0;
  color: var(--ink-700);
  font-size: 0.92rem;
}

.module-legend-swatch {
  flex: none;
  width: 1.6rem;
  height: 0.85rem;
  border-radius: 0.3rem;
  background: var(--orange-100);
  box-shadow: inset 0.25rem 0 0 var(--orange-500);
}

.publication-list {
  display: grid;
  gap: 1rem;
  margin-top: 1.6rem;
}

.publication {
  display: grid;
  grid-template-columns: 5.2rem minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.publication-year {
  color: var(--orange-600);
  font-size: 1.1rem;
  font-weight: 900;
}

.publication h3 {
  margin: 0;
  color: var(--navy-950);
  font-size: 1.08rem;
  line-height: 1.38;
}

.publication .authors,
.publication .venue {
  margin: 0.45rem 0 0;
  color: var(--ink-700);
  font-size: 0.95rem;
}

.publication .venue {
  font-style: italic;
}

.publication-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.8rem;
}

.publication-links a {
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  font-size: 0.82rem;
  font-weight: 800;
  text-decoration: none;
}

.callout {
  padding: clamp(1.6rem, 4vw, 2.4rem);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--navy-950), var(--navy-800));
  color: var(--surface);
  box-shadow: var(--shadow-lg);
}

.callout h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.75rem, 4vw, 2.7rem);
}

.callout p {
  max-width: 760px;
  margin: 0.85rem 0 0;
  color: rgba(255, 255, 255, 0.77);
}

.site-footer {
  padding: 3rem 0;
  background: var(--navy-950);
  color: rgba(255, 255, 255, 0.72);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: end;
}

.footer-grid strong {
  display: block;
  color: var(--surface);
  font-size: 1.05rem;
}

.footer-grid p {
  margin: 0.4rem 0 0;
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 900px) {
  .hero-grid,
  .split-layout,
  .profile-layout {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    order: 2;
  }

  .profile-frame {
    order: 1;
    width: min(75vw, 310px);
    justify-self: start;
  }

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

  .sidebar-card {
    position: static;
  }
}

@media (max-width: 760px) {
  .header-inner {
    min-height: 68px;
  }

  .brand-role {
    display: none;
  }

  .menu-button {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 1rem;
    left: 1rem;
    display: none;
    padding: 0.65rem;
    border: 1px solid var(--line);
    border-radius: 0 0 1rem 1rem;
    background: var(--surface);
    box-shadow: var(--shadow-lg);
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav ul {
    display: grid;
  }

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

  .timeline::before {
    left: 0.45rem;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 0.45rem;
    padding-left: 2.2rem;
  }

  .timeline-period {
    padding: 0;
    text-align: left;
  }

  .timeline-content::before {
    top: 1.45rem;
    left: -2.15rem;
  }

  .publication {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .site-header,
  .site-footer,
  .hero-actions,
  .button-row,
  .menu-button {
    display: none !important;
  }

  body {
    color: #000;
  }

  .page-hero,
  .hero {
    padding: 2rem 0;
    background: none;
    color: #000;
  }

  .page-hero p,
  .hero-lead {
    color: #333;
  }

  .card,
  .timeline-content,
  .publication {
    box-shadow: none;
    break-inside: avoid;
  }
}