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

.site-header {
  padding-top: var(--space-4);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background-color: var(--header-background);
  z-index: 8;
}

.header-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-3);
  padding-bottom: var(--space-3);
}

.brand {
  display: grid;
  gap: 0.15rem;
}

.brand strong {
  font-family: "Manrope", "Noto Sans JP", "Segoe UI", sans-serif;
  font-size: var(--step-1);
  letter-spacing: normal;
}

.brand span {
  color: var(--text-soft);
  font-size: var(--step--1);
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.site-nav ul {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  justify-content: flex-end;
}

.header-actions {
  flex: 1 1 24rem;
  min-width: 0;
  margin-left: auto;
  display: grid;
  gap: var(--space-2);
  justify-items: end;
}

main {
  padding: var(--space-7) 0 var(--space-8);
}

.section {
  margin-bottom: var(--space-8);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.hero {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1.6fr 1fr;
  align-items: start;
}

body[data-page="about"] .hero {
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 1.15fr);
}

body[data-page="about"] .hero>* {
  min-width: 0;
}

body[data-page="projects"] .hero {
  grid-template-columns: 1fr;
}

body[data-page="eng-home"] .hero {
  grid-template-columns: 1fr;
}

body[data-page="eng-projects"] .hero,
body[data-page="eng-articles"] .hero {
  grid-template-columns: 1fr;
}

.hero-copy {
  display: grid;
  gap: var(--space-4);
}

.grid-2 {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.footer {
  border-top: 1px solid var(--line);
  padding: var(--space-5) 0;
  color: var(--text-soft);
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.landing-main {
  min-height: calc(100vh - 106px);
  display: grid;
  place-items: center;
  padding: var(--space-6) 0;
}

.landing {
  position: relative;
  width: min(100%, 980px);
  min-height: 66vh;
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  background: var(--landing-background);
}

.landing-canvas {
  position: absolute;
  inset: 0;
}

.landing-overlay {
  position: relative;
  z-index: 2;
  min-height: 66vh;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: var(--space-4);
  text-align: center;
  padding: var(--space-5);
}

.landing-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
}

body[data-page="home"] .landing-main {
  min-height: calc(100vh - 190px);
  width: 100%;
  max-width: none;
  padding: var(--space-2) 0;
  padding-inline: 1rem;
}

body[data-page="home"] .home-landing-wrap {
  width: 100%;
  display: grid;
  justify-items: center;
}

body[data-page="home"] .landing {
  width: min(100%, clamp(40rem, 52vw, 56rem));
  aspect-ratio: 1 / 1;
  min-height: 0;
}

body[data-page="home"] .landing-overlay {
  min-height: 100%;
  width: min(100%, 42rem);
  margin-inline: auto;
  gap: clamp(1rem, 2.4vh, 1.7rem);
  padding: clamp(1.2rem, 2.8vh, 2rem);
}

body[data-page="home"] .footer {
  padding: var(--space-2) 0;
  justify-content: center;
  text-align: center;
}

@media (max-height: 820px) and (min-width: 901px) {
  body[data-page="home"] .landing {
    width: min(100%, min(62vh, 37.8rem));
  }
}

@media (min-width: 1800px) {
  body[data-page="home"] .landing {
    width: min(100%, 62vw, 68vh, 82rem);
  }

  body[data-page="home"] .landing-overlay {
    width: min(100%, 46rem);
    gap: clamp(1.1rem, 2.3vh, 1.8rem);
    padding: clamp(1.3rem, 2.8vh, 2.2rem);
  }
}

@media (max-width: 1024px) {
  body[data-page="about"] .hero {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }
}

@media (max-width: 900px) {

  .hero,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  main {
    padding-top: var(--space-6);
  }

  body[data-page="home"] .landing {
    width: min(100%, 840px);
  }
}

@media (max-width: 680px) {
  .site-header {
    position: static;
  }

  .header-row,
  .section-head,
  .footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-actions {
    flex: none;
    width: 100%;
    margin-left: 0;
    justify-items: flex-start;
  }

  .site-nav {
    width: 100%;
  }

  .site-nav ul {
    justify-content: flex-start;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .article-filter-row {
    gap: 0.45rem;
  }

  body[data-page="about"] .hero {
    gap: var(--space-4);
  }

  body[data-page="about"] .hero-copy {
    gap: var(--space-3);
  }

  body[data-page="about"] .hero-copy h1 {
    font-size: clamp(2.2rem, 1.9rem + 1.7vw, 2.8rem);
  }

  body[data-page="home"] .landing-main {
    min-height: auto;
    padding: var(--space-4) 0;
  }

  body[data-page="home"] .landing {
    width: 100%;
    aspect-ratio: auto;
    min-height: 31rem;
  }

  body[data-page="home"] .landing-overlay {
    width: 100%;
  }
}