:root {
  --ink: #1f2529;
  --muted: #72787b;
  --line: #dfe2e1;
  --paper: #fff;
  --soft: #f3f4f1;
  --deep: #222a2e;
  --accent: #8a6f49;
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.header-inner {
  max-width: var(--max); min-height: 84px; margin: auto; padding: 0 32px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { text-decoration: none; display: flex; flex-direction: column; line-height: 1.15; }
.brand-main { font-size: 1.14rem; letter-spacing: .12em; font-weight: 700; }
.brand-sub { margin-top: 7px; color: var(--muted); font: .62rem/1.2 Arial,sans-serif; letter-spacing: .25em; }
.site-nav { display: flex; align-items: center; gap: 28px; font-family: Arial,"Yu Gothic",sans-serif; }
.site-nav a { position: relative; padding: 30px 0 27px; text-decoration: none; font-size: .86rem; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 20px; height: 1px; background: var(--ink); transform: scaleX(0); transition: .25s; }
.site-nav a:hover::after, .site-nav a.is-current::after { transform: scaleX(1); }
.menu-button { display: none; border: 0; background: none; width: 44px; height: 44px; padding: 10px; }
.menu-button span:not(.sr-only) { display: block; height: 1px; margin: 6px 0; background: var(--ink); }

.work-hero { border-bottom: 1px solid var(--line); }
.hero-shell {
  max-width: var(--max); min-height: 660px; margin: auto; padding: 72px 32px;
  display: grid; grid-template-columns: minmax(0,1.08fr) minmax(340px,.92fr);
  align-items: center; gap: 70px;
}
.hero-visual { margin: 0; background: var(--soft); overflow: hidden; }
.hero-visual img { width: 100%; max-height: 590px; object-fit: contain; }
.hero-copy { max-width: 520px; }
.eyebrow, .section-label {
  margin: 0 0 18px; color: var(--accent);
  font: 700 .7rem/1.3 Arial,sans-serif; letter-spacing: .28em;
}
.work-tag {
  display: inline-block; margin: 0 0 22px; padding: 6px 10px;
  border: 1px solid #cfc4b3; color: #675437;
  font: .72rem/1.2 "Yu Gothic",sans-serif; letter-spacing: .08em;
}
h1 { margin: 0; font-size: clamp(2.5rem,5vw,5.4rem); font-weight: 500; line-height: 1.23; letter-spacing: .04em; }
.work-en { margin: 18px 0 0; color: var(--muted); font: .69rem/1.4 Arial,sans-serif; letter-spacing: .25em; }
.hero-lead { margin: 34px 0; font-size: 1.05rem; }
.meta-row { display: flex; flex-wrap: wrap; gap: 12px 34px; margin: 0 0 36px; padding: 22px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.meta-row div { min-width: 115px; }
.meta-row dt { color: var(--muted); font: .68rem/1.2 Arial,sans-serif; letter-spacing: .16em; }
.meta-row dd { margin: 7px 0 0; font-size: .96rem; }
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 16px;
  min-height: 54px; padding: 12px 26px; text-decoration: none;
  font-family: "Yu Gothic",sans-serif; font-size: .88rem; letter-spacing: .06em;
  transition: .2s;
}
.button-dark { color: #fff; background: var(--deep); border: 1px solid var(--deep); }
.button-dark:hover { background: #394247; }
.button-outline { border: 1px solid #bfc3c3; }
.button-outline:hover { background: var(--soft); }

.content-section { padding: 100px 32px; }
.content-inner { max-width: 960px; margin: auto; }
.section-heading { display: flex; align-items: center; gap: 18px; margin-bottom: 45px; }
.section-heading span { width: 90px; height: 1px; background: var(--line); }
.section-heading .section-label { margin: 0; }
.story-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 80px; }
.story-grid h2 { margin: 0; font-size: clamp(1.75rem,3vw,2.7rem); font-weight: 500; line-height: 1.55; }
.story-copy { font-size: 1.03rem; }
.story-copy p { margin: 0 0 1.15em; }
.story-copy p:last-child { margin-bottom: 0; }
.work-note { margin-top: 28px; padding: 18px 22px; border-left: 2px solid var(--accent); background: var(--soft); font-size: .92rem; }

.gallery-section { padding: 100px 32px; background: var(--soft); }
.gallery-inner { max-width: var(--max); margin: auto; }
.gallery-head { display: flex; justify-content: space-between; gap: 30px; align-items: end; margin-bottom: 40px; }
.gallery-head h2 { margin: 0; font-size: clamp(1.8rem,3vw,2.8rem); font-weight: 500; }
.gallery-head p:last-child { max-width: 390px; margin: 0; color: var(--muted); }
.gallery-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px; }
.gallery-grid button { border: 0; padding: 0; background: #fff; cursor: zoom-in; overflow: hidden; }
.gallery-grid img { width: 100%; aspect-ratio: 16/10; object-fit: cover; transition: transform .35s; }
.gallery-grid button:hover img { transform: scale(1.025); }
.lightbox {
  position: fixed; inset: 0; z-index: 100; display: none; place-items: center;
  padding: 30px; background: rgba(15,18,20,.92);
}
.lightbox.is-open { display: grid; }
.lightbox img { max-width: min(1200px,92vw); max-height: 86vh; object-fit: contain; }
.lightbox-close { position: absolute; top: 18px; right: 22px; border: 0; color: #fff; background: transparent; font-size: 2.4rem; cursor: pointer; }

.download-section { padding: 95px 32px; background: var(--deep); color: #fff; }
.download-inner { max-width: 960px; margin: auto; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 50px; }
.download-inner .eyebrow { color: #c8ae82; }
.download-inner h2 { margin: 0 0 14px; font-size: clamp(1.8rem,3vw,2.8rem); font-weight: 500; }
.download-inner p { margin: 0; color: #cbd0d2; }
.button-light { color: var(--ink); background: #fff; border: 1px solid #fff; }
.button-light:hover { background: #e9e9e5; }

.other-works { padding: 95px 32px; border-bottom: 1px solid var(--line); }
.other-inner { max-width: var(--max); margin: auto; }
.other-head { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 32px; }
.other-head h2 { margin: 0; font-size: 2rem; font-weight: 500; }
.text-link { font-family: "Yu Gothic",sans-serif; text-decoration: none; border-bottom: 1px solid #9ea3a3; }
.work-links { display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.work-links a { min-height: 102px; padding: 23px; display: flex; align-items: center; justify-content: space-between; gap: 15px; text-decoration: none; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: .2s; }
.work-links a:hover { background: var(--soft); }
.work-links a.is-current { color: var(--muted); background: var(--soft); pointer-events: none; }
.work-links span:first-child { font-size: .91rem; }
.work-links .arrow { font-family: Arial,sans-serif; }

.site-footer { padding: 45px 32px; }
.footer-inner { max-width: var(--max); margin: auto; display: flex; justify-content: space-between; gap: 30px; color: var(--muted); font: .78rem/1.8 "Yu Gothic",sans-serif; }
.footer-links { display: flex; flex-wrap: wrap; gap: 22px; }
.footer-links a { text-decoration: none; }

@media (max-width: 900px) {
  .header-inner { min-height: 72px; padding: 0 22px; }
  .menu-button { display: block; }
  .site-nav {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    padding: 10px 22px 24px; background: #fff; border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; gap: 0;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .site-nav a::after { display: none; }
  .hero-shell { min-height: auto; padding: 45px 22px 66px; grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { order: 1; }
  .hero-copy { order: 2; max-width: none; }
  .hero-visual img { max-height: none; }
  .story-grid { grid-template-columns: 1fr; gap: 30px; }
  .content-section, .gallery-section, .download-section, .other-works { padding: 70px 22px; }
  .gallery-head { display: block; }
  .gallery-head p:last-child { margin-top: 18px; }
  .download-inner { grid-template-columns: 1fr; }
  .work-links { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 560px) {
  .brand-main { font-size: 1rem; }
  .brand-sub { font-size: .55rem; }
  h1 { font-size: 2.45rem; }
  .gallery-grid { grid-template-columns: 1fr; }
  .work-links { grid-template-columns: 1fr; }
  .other-head { display: block; }
  .other-head .text-link { display: inline-block; margin-top: 16px; }
  .footer-inner { display: block; }
  .footer-links { margin-top: 15px; gap: 13px; }
  .button { width: 100%; }
}