.container {
  width: var(--container);
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: var(--space-9);
  scroll-margin-top: 5.4rem;
}

.section-alt {
  background: linear-gradient(180deg, rgb(255 255 255 / 34%) 0%, rgb(255 255 255 / 72%) 100%);
  border-top: 1px solid rgb(41 49 58 / 8%);
  border-bottom: 1px solid rgb(41 49 58 / 8%);
}

.section-head {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-7);
}

.section-head h2 {
  font-size: clamp(1.9rem, 2vw + 1.1rem, 3.1rem);
}

.section-index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.section-intro {
  max-width: 65ch;
  margin-bottom: var(--space-6);
  color: var(--color-muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(9px);
  background: rgb(244 241 234 / 74%);
  border-bottom: 1px solid rgb(41 49 58 / 9%);
}

.nav-wrapper {
  min-height: 4.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand {
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 1.1vw, 1.1rem);
  font-weight: 700;
  text-decoration: none;
}

.global-nav {
  display: flex;
  gap: var(--space-5);
}

.global-nav a {
  text-decoration: none;
  color: var(--color-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.global-nav a:hover,
.global-nav a.is-active {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  border: none;
  background: transparent;
  padding: var(--space-2);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.25rem;
  height: 2px;
  background: var(--color-text);
}

.nav-toggle span + span {
  margin-top: 0.28rem;
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: clip;
  padding-top: calc(var(--space-9) + 1rem);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(140deg, rgb(5 19 60 / 94%) 12%, rgb(9 43 119 / 68%) 46%, rgb(3 14 42 / 92%) 100%),
    url("../assets/images/hero-background.png") center / cover no-repeat;
  z-index: -2;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 42%;
  background: linear-gradient(180deg, rgb(244 241 234 / 0%) 0%, rgb(244 241 234 / 78%) 70%, rgb(244 241 234 / 100%) 100%);
  z-index: -1;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: 1.08fr 0.92fr;
  align-items: start;
}

.hero-content {
  display: grid;
  gap: var(--space-5);
}

.hero-side {
  display: grid;
  gap: var(--space-4);
  justify-self: end;
}

.overview-grid,
.experience-header,
.contact-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.fact-grid,
.service-grid,
.domain-grid,
.detail-grid,
.product-grid,
.workstyle-grid {
  display: grid;
  gap: var(--space-5);
}

.fact-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: var(--space-6);
}

.service-grid {
  grid-template-columns: repeat(auto-fit, minmax(12.5rem, 1fr));
  margin-top: var(--space-5);
}

.featured-mini-card {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.7fr);
  align-items: center;
}

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

.workstyle-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
}

.experience-list {
  display: grid;
  gap: var(--space-6);
}

.thesis-grid,
.principles-grid,
.project-grid {
  display: grid;
  gap: var(--space-5);
}

.thesis-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.project-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.timeline {
  display: grid;
  gap: var(--space-5);
}

.timeline-item {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: minmax(180px, 0.27fr) minmax(0, 0.73fr);
}

.footer {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

.footer-content {
  display: grid;
  gap: var(--space-4);
}

@media (max-width: 70rem) {
  .hero-grid,
  .timeline-item,
  .overview-grid,
  .experience-header,
  .featured-mini-card {
    grid-template-columns: 1fr;
  }

  .hero-side {
    justify-self: stretch;
  }

  .thesis-grid,
  .project-grid,
  .principles-grid,
  .fact-grid,
  .service-grid,
  .product-grid,
  .workstyle-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 52rem) {
  .section {
    padding-block: var(--space-8);
    scroll-margin-top: 4.8rem;
  }

  .global-nav {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: var(--space-3);
  }

  .js .global-nav {
    position: fixed;
    inset: 4.2rem 0 auto 0;
    flex-direction: column;
    padding: var(--space-4) var(--space-5) var(--space-6);
    background: rgb(244 241 234 / 98%);
    border-bottom: 1px solid rgb(41 49 58 / 12%);
    transform: translateY(-120%);
    transition: transform var(--transition-med);
  }

  .js .global-nav.is-open {
    transform: translateY(0);
  }

  .js .nav-toggle {
    display: block;
  }

  .thesis-grid,
  .project-grid,
  .principles-grid,
  .fact-grid,
  .service-grid,
  .domain-grid,
  .detail-grid,
  .product-grid,
  .workstyle-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: var(--space-6);
  }

  .overview-grid,
  .experience-header {
    grid-template-columns: 1fr;
  }
}