:root {
  --mcn-navy: #102a43;
  --mcn-blue: #147d92;
  --mcn-teal: #2cb1bc;
  --mcn-gold: #f0b429;
  --mcn-ink: #243b53;
  --mcn-muted: #627d98;
  --mcn-pale: #f0f4f8;
  --mcn-white: #ffffff;
  --mcn-radius: 1rem;
  --mcn-shadow: 0 18px 45px rgba(16, 42, 67, 0.12);
}

body {
  color: var(--mcn-ink);
  font-size: 1.03rem;
  line-height: 1.7;
}

h1,
h2,
h3,
.navbar-brand {
  color: var(--mcn-navy);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.25rem, 5vw, 4.5rem);
}

h2 {
  margin-top: 2.4rem;
}

a {
  color: #096b7a;
  text-underline-offset: 0.16em;
}

a:hover {
  color: #07515c;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--mcn-gold);
  outline-offset: 3px;
}

.navbar {
  box-shadow: 0 2px 18px rgba(16, 42, 67, 0.2);
}

.navbar-brand,
.navbar-nav .nav-link {
  color: var(--mcn-white) !important;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
  color: #b8f0f2 !important;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(13rem, 0.7fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 6rem);
  min-height: 34rem;
  margin: -1px calc(50% - 50vw) 0;
  padding: clamp(4rem, 9vw, 8rem) max(6vw, calc((100vw - 1180px) / 2));
  color: var(--mcn-white);
  background:
    radial-gradient(circle at 78% 22%, rgba(44, 177, 188, 0.36), transparent 28%),
    linear-gradient(125deg, #102a43 0%, #164e63 55%, #147d92 100%);
}

.hero h2 {
  max-width: 15ch;
  margin: 0 0 1.4rem;
  color: var(--mcn-white);
  font-size: clamp(2.5rem, 5vw, 5rem);
  line-height: 1.04;
}

.hero p {
  max-width: 65ch;
  margin-bottom: 2rem;
  color: #e6f6f7;
  font-size: 1.18rem;
}

.hero .btn {
  margin: 0.35rem 0.6rem 0.35rem 0;
}

.hero-mark {
  display: grid;
  width: clamp(12rem, 20vw, 19rem);
  aspect-ratio: 1;
  place-items: center;
  justify-self: center;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 50%;
  box-shadow:
    0 0 0 1.2rem rgba(255, 255, 255, 0.07),
    0 0 0 2.5rem rgba(255, 255, 255, 0.035);
}

.hero-logo {
  display: block;
  width: 100%;
  height: auto;
  margin: 0;
}

.content-section {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(3.5rem, 7vw, 6.5rem) 1.25rem;
}

.content-section > h2:first-child {
  margin-top: 0;
  font-size: clamp(2rem, 4vw, 3rem);
}

.card-grid,
.research-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
  margin-top: 2rem;
}

.feature-card,
.research-card,
.person-card,
.publication {
  border: 1px solid #d9e2ec;
  border-radius: var(--mcn-radius);
  background: var(--mcn-white);
  box-shadow: var(--mcn-shadow);
}

.feature-card,
.research-card {
  padding: 1.75rem;
}

.feature-card {
  border-top: 5px solid var(--mcn-teal);
}

.feature-card h3,
.research-card h3 {
  margin-top: 0;
}

.research-grid {
  grid-template-columns: 1fr;
  width: 100%;
  margin: 2rem 0 3rem;
}

.research-card {
  border-left: 5px solid var(--mcn-blue);
}

.research-card h4 {
  margin-top: 1.35rem;
  margin-bottom: 0.6rem;
  color: var(--mcn-navy);
  font-size: 1rem;
}

.research-card ul {
  margin-bottom: 0;
  padding-left: 1.15rem;
}

.research-card li + li {
  margin-top: 0.65rem;
}

.theme-figure {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  box-sizing: border-box;
  margin: 0.9rem 0 1.25rem;
  border: 1px solid #d9e2ec;
  border-radius: calc(var(--mcn-radius) * 0.75);
  background: var(--mcn-white);
}

.research-question-list {
  margin: 2.2rem 0 3.2rem;
  padding: 1.5rem 1.7rem 1.25rem;
  border-left: 5px solid var(--mcn-teal);
  border-radius: 0 var(--mcn-radius) var(--mcn-radius) 0;
  background: var(--mcn-pale);
}

.research-question-list h3 {
  margin-top: 0;
}

.research-question-list ol {
  margin-bottom: 0;
  padding-left: 1.25rem;
}

.research-question-list li {
  margin-bottom: 0.75rem;
  padding-left: 0.35rem;
}

.research-direction {
  width: min(1080px, calc(100vw - 22rem));
  margin: 3rem 0 4.5rem 50%;
  padding: clamp(1.5rem, 4vw, 3rem);
  transform: translateX(-50%);
  border: 1px solid #d9e2ec;
  border-top: 6px solid var(--mcn-blue);
  border-radius: var(--mcn-radius);
  background: #f8fafc;
}

.research-direction > h2:first-child {
  margin-top: 0;
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
}

.research-direction h3 {
  margin-top: 2rem;
  font-size: 1.22rem;
}

.direction-figure {
  display: block;
  width: 100%;
  height: auto;
  margin: 1.5rem 0 2rem;
  border: 1px solid #d9e2ec;
  border-radius: var(--mcn-radius);
  background: var(--mcn-white);
  box-shadow: 0 14px 35px rgba(16, 42, 67, 0.1);
}

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

.key-paper {
  padding: 1rem 1.1rem;
  border-left: 4px solid var(--mcn-teal);
  border-radius: 0.55rem;
  background: var(--mcn-white);
  box-shadow: 0 8px 22px rgba(16, 42, 67, 0.07);
}

.key-paper p {
  margin: 0;
}

.key-paper p + p {
  margin-top: 0.35rem;
}

.modality-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  width: 100%;
  margin: 2rem 0 3rem;
}

.modality-panel,
.integration-panel {
  overflow: hidden;
  border: 1px solid #d9e2ec;
  border-radius: var(--mcn-radius);
  background: var(--mcn-white);
  box-shadow: var(--mcn-shadow);
}

.modality-panel h3,
.modality-panel p,
.integration-copy {
  margin-right: 1.4rem;
  margin-left: 1.4rem;
}

.modality-panel h3 {
  margin-top: 1.15rem;
  margin-bottom: 0.35rem;
}

.modality-panel p {
  margin-bottom: 1.4rem;
}

.modality-image,
.integration-image {
  display: block;
  width: 100%;
  height: auto;
  margin: 0;
}

.integration-panel {
  width: 100%;
  margin: 2rem 0 3rem;
}

.integration-copy {
  padding: 0.4rem 0 1.25rem;
}

.band {
  margin: 0 calc(50% - 50vw);
  background: var(--mcn-pale);
}

.person-card {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 1.6rem;
  max-width: 760px;
  padding: 1.6rem;
}

.people-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.people-grid .person-card {
  grid-template-columns: 6rem 1fr;
  max-width: none;
}

.people-grid .person-initials {
  width: 6rem;
}

.person-initials {
  display: grid;
  width: 8rem;
  aspect-ratio: 1;
  place-items: center;
  border-radius: 50%;
  color: var(--mcn-white);
  background: linear-gradient(145deg, var(--mcn-navy), var(--mcn-teal));
  font-size: 2rem;
  font-weight: 800;
}

.person-copy h3 {
  margin-top: 0.4rem;
}

.publication {
  margin: 1rem 0;
  padding: 1.15rem 1.3rem;
  border-left: 5px solid var(--mcn-teal);
}

.publication p {
  margin: 0;
}

.research-schematic-frame {
  width: min(1400px, calc(100vw - 2rem));
  margin: 3rem 0 0 50%;
  overflow-x: auto;
  transform: translateX(-50%);
}

.research-schematic {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 1rem;
}

.multiscale-key {
  margin: 0.8rem 0 0.25rem;
  color: var(--mcn-muted);
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  text-align: center;
}

.schematic-link {
  display: block;
  margin-bottom: 2rem;
  text-align: center;
}

.btn-primary {
  border-color: #0b6673;
  background-color: #0b6673;
}

.btn-primary:hover,
.btn-primary:focus {
  border-color: #084b54;
  background-color: #084b54;
}

.btn-outline-light:hover {
  color: var(--mcn-navy);
}

.nav-footer {
  background: var(--mcn-navy);
  color: #e6f6f7;
}

.nav-footer a {
  color: #b8f0f2;
}

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

  .hero-mark {
    display: none;
  }

  .card-grid,
  .research-grid,
  .people-grid,
  .modality-grid,
  .key-publications {
    grid-template-columns: 1fr;
  }

  .research-grid {
    width: 100%;
  }

  .research-direction {
    width: min(100%, calc(100vw - 2rem));
    padding: 1.35rem;
  }

  .research-schematic {
    min-width: 880px;
  }
}

@media (max-width: 600px) {
  .person-card {
    grid-template-columns: 1fr;
  }

  .person-initials {
    width: 6rem;
  }
}

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