:root {
  color-scheme: light;
  --paper: #ffffff;
  --ink: #101010;
  --muted: #676767;
  --line: #171717;
  --hairline: #d8d8d8;
  --accent: #0a4bff;
  --gutter: clamp(20px, 3.4vw, 56px);
  --max: 1540px;
  font-family: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", Arial, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  width: min(calc(100% - 2 * var(--gutter)), var(--max));
  min-height: 76px;
  margin: 0 auto;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  font-size: 14px;
  font-weight: 600;
}

.brand {
  letter-spacing: -0.025em;
}

.site-header nav {
  display: flex;
  gap: clamp(18px, 2.5vw, 38px);
  align-items: center;
}

.site-header nav a {
  color: var(--muted);
  transition: color 160ms ease;
}

.site-header nav a:last-child {
  color: var(--accent);
}

.site-header nav a:hover,
.site-header nav a:focus-visible {
  color: var(--ink);
}

main,
footer {
  width: min(calc(100% - 2 * var(--gutter)), var(--max));
  margin-inline: auto;
}

.hero {
  min-height: min(680px, 72vh);
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(260px, 0.7fr);
  align-items: end;
  gap: 60px;
  padding: clamp(76px, 11vh, 150px) 0 clamp(70px, 9vh, 116px);
}

.hero h1 {
  margin: 0;
  max-width: 980px;
  font-size: clamp(54px, 7.1vw, 118px);
  line-height: 0.98;
  font-weight: 650;
  letter-spacing: -0.075em;
}

.hero p {
  margin: 0 0 0.25em;
  max-width: 410px;
  font-size: clamp(17px, 1.45vw, 23px);
  line-height: 1.65;
  letter-spacing: -0.025em;
  color: var(--muted);
}

.architecture-note {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--hairline);
  padding: 25px 0 28px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(30px, 8vw, 160px);
}

.architecture-note p {
  margin: 0;
  max-width: 620px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
}

.showcase-section {
  padding-top: clamp(96px, 13vw, 190px);
  scroll-margin-top: 20px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(220px, 0.55fr) minmax(320px, 1fr) auto;
  gap: 30px;
  align-items: end;
  padding-bottom: 17px;
  border-bottom: 1px solid var(--line);
}

.section-heading h2 {
  margin: 0;
  color: var(--accent);
  font-size: clamp(29px, 3.2vw, 52px);
  line-height: 1;
  letter-spacing: -0.055em;
}

.section-heading p {
  margin: 0;
  max-width: 650px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

.section-heading span {
  color: var(--accent);
  font: 600 12px/1 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.08em;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(74px, 9vw, 150px) clamp(24px, 4.2vw, 70px);
  padding-top: clamp(48px, 6vw, 86px);
}

.showcase {
  grid-column: span 6;
  align-self: start;
}

.showcase:nth-child(4n + 2),
.showcase:nth-child(4n + 3) {
  margin-top: clamp(45px, 7vw, 112px);
}

.showcase-copy {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding-bottom: 17px;
}

.showcase-id {
  color: var(--accent);
  font: 650 13px/1.25 "SFMono-Regular", Consolas, monospace;
}

.showcase h3 {
  margin: -0.13em 0 5px;
  font-size: clamp(20px, 1.8vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.045em;
}

.showcase-english {
  margin: 0 0 13px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.35;
  text-transform: uppercase;
  letter-spacing: 0.11em;
}

.showcase-description {
  margin: 0;
  max-width: 540px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.showcase-media {
  position: relative;
  display: block;
  background: #f3f3f3;
  overflow: hidden;
  outline-offset: 5px;
}

.showcase-media img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 650ms cubic-bezier(0.22, 1, 0.36, 1), filter 260ms ease;
}

.showcase-media > span {
  position: absolute;
  right: 0;
  bottom: 0;
  padding: 10px 12px;
  background: var(--paper);
  color: var(--ink);
  font-size: 11px;
  font-weight: 600;
  opacity: 0;
  transform: translateY(100%);
  transition: opacity 180ms ease, transform 240ms ease;
}

.showcase-media:hover img,
.showcase-media:focus-visible img {
  transform: scale(1.012);
  filter: contrast(1.015);
}

.showcase-media:hover > span,
.showcase-media:focus-visible > span {
  opacity: 1;
  transform: none;
}

.gallery--expression .showcase:nth-child(1),
.gallery--expression .showcase:nth-child(4),
.gallery--expression .showcase:nth-child(7),
.gallery--expression .showcase:nth-child(10) {
  grid-column: span 5;
}

.gallery--expression .showcase:nth-child(2),
.gallery--expression .showcase:nth-child(5),
.gallery--expression .showcase:nth-child(8),
.gallery--expression .showcase:nth-child(11) {
  grid-column: span 7;
}

.gallery--expression .showcase:nth-child(3),
.gallery--expression .showcase:nth-child(6),
.gallery--expression .showcase:nth-child(9),
.gallery--expression .showcase:nth-child(12) {
  grid-column: 4 / span 6;
  margin-top: 0;
}

footer {
  margin-top: clamp(120px, 15vw, 230px);
  min-height: 160px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 30px;
  padding-top: 25px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

footer p {
  margin: 0;
}

footer a {
  color: var(--accent);
  font-weight: 600;
}

@media (max-width: 900px) {
  .site-header nav a:not(:last-child) {
    display: none;
  }

  .hero {
    min-height: 580px;
    grid-template-columns: 1fr;
    align-content: end;
    gap: 45px;
  }

  .architecture-note,
  .section-heading {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .section-heading span {
    grid-row: 1;
    justify-self: end;
  }

  .section-heading h2 {
    grid-row: 1;
  }

  .section-heading p {
    grid-column: 1;
  }

  .gallery,
  .gallery--expression {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 90px 22px;
  }

  .showcase,
  .gallery--expression .showcase:nth-child(n) {
    grid-column: auto;
    margin-top: 0;
  }

  .showcase:nth-child(even) {
    margin-top: 80px;
  }

  .showcase-copy {
    grid-template-columns: 42px minmax(0, 1fr);
  }
}

@media (max-width: 620px) {
  :root {
    --gutter: 18px;
  }

  .site-header {
    min-height: 62px;
  }

  .hero {
    min-height: 520px;
    padding: 78px 0 64px;
  }

  .hero h1 {
    font-size: clamp(45px, 14vw, 66px);
    line-height: 1.02;
  }

  .hero p {
    font-size: 16px;
  }

  .architecture-note {
    gap: 10px;
  }

  .showcase-section {
    padding-top: 105px;
  }

  .gallery,
  .gallery--expression {
    grid-template-columns: 1fr;
    gap: 86px;
  }

  .showcase,
  .showcase:nth-child(even),
  .gallery--expression .showcase:nth-child(n) {
    margin-top: 0;
  }

  .showcase-copy {
    grid-template-columns: 40px minmax(0, 1fr);
  }

  .showcase h3 {
    font-size: 24px;
  }

  .showcase-media > span {
    opacity: 1;
    transform: none;
  }

  footer {
    min-height: 210px;
    flex-direction: column;
  }
}

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

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