:root {
  --color-bg:       #ffffff;
  --color-bg-alt:   #f5f6f4;
  --color-line:     #e3e5e1;
  --color-ink:      #1f2a1f;       
  --color-ink-sub:  #45504a;
  --color-muted:    #7b837d;
  --color-brand:    #2a5a2d;       
  --color-accent:   #f2c200;       
  --ff-jp: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  --ff-en: "Barlow", "Helvetica Neue", Arial, sans-serif;
  --content-max: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 4px;
  --shadow: 0 4px 20px rgba(0,0,0,0.05);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--ff-jp);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.8;
  letter-spacing: 0.03em;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--color-line);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header .inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 16px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.logo .mark {
  display: inline-block;
  background: var(--color-brand);
  color: #fff;
  font-family: var(--ff-en);
  font-weight: 700;
  padding: 6px 10px 5px;
  border-radius: 2px;
  letter-spacing: 0.1em;
  font-size: 13px;
  position: relative;
}
.logo .mark::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 3px;
  background: var(--color-accent);
  border-radius: 0 0 2px 2px;
}
.logo .name {
  font-family: var(--ff-en);
  font-size: 14px;
  letter-spacing: 0.14em;
}
.logo .name small {
  display: block;
  font-family: var(--ff-jp);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--color-muted);
  margin-top: 2px;
}
.global-nav {
  display: flex;
  gap: 28px;
  font-size: 13px;
  letter-spacing: 0.08em;
}
.global-nav a {
  color: var(--color-ink-sub);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: border-color .2s, color .2s;
}
.global-nav a:hover { color: var(--color-brand); }
.global-nav a.is-current { border-color: var(--color-brand); color: var(--color-ink); font-weight: 600; }
@media (max-width: 820px) {
  .global-nav { display: none; }
}

.page-hero {
  background: linear-gradient(135deg, #f3f5f1 0%, #e8ece3 100%);
  padding: clamp(60px, 8vw, 100px) var(--gutter) clamp(50px, 6vw, 80px);
  border-bottom: 1px solid var(--color-line);
}
.page-hero .inner {
  max-width: var(--content-max);
  margin: 0 auto;
}
.breadcrumb {
  font-size: 12px;
  color: var(--color-muted);
  margin-bottom: 24px;
  letter-spacing: 0.08em;
}
.breadcrumb a:hover { color: var(--color-brand); }
.breadcrumb span { margin: 0 8px; }
.page-hero h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  letter-spacing: 0.08em;
  margin: 0 0 8px;
  line-height: 1.4;
}
.page-hero h1 .en {
  display: block;
  font-family: var(--ff-en);
  font-size: 13px;
  letter-spacing: 0.4em;
  color: var(--color-brand);
  font-weight: 500;
  margin-bottom: 14px;
}
.page-hero .lead {
  font-size: 15px;
  color: var(--color-ink-sub);
  max-width: 720px;
  line-height: 2;
  margin: 20px 0 0;
}

.filter-bar {
  background: #fff;
  border-bottom: 1px solid var(--color-line);
  padding: 18px var(--gutter);
}
.filter-bar .inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: center;
}
.filter-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.filter-group .label {
  font-size: 12px;
  color: var(--color-muted);
  letter-spacing: 0.1em;
}
.chip {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  font-size: 12px;
  color: var(--color-ink-sub);
  cursor: pointer;
  transition: all .18s;
  background: #fff;
  letter-spacing: 0.06em;
}
.chip:hover { border-color: var(--color-brand); color: var(--color-brand); }
.chip.is-active {
  background: var(--color-brand);
  color: #fff;
  border-color: var(--color-brand);
}

.works-section { padding: clamp(50px, 6vw, 80px) 0 clamp(80px, 10vw, 120px); }
.works-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.works-count {
  font-size: 13px;
  color: var(--color-muted);
}
.works-count strong {
  color: var(--color-ink);
  font-family: var(--ff-en);
  font-size: 18px;
  margin: 0 4px;
  font-weight: 500;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.4vw, 32px);
}
@media (max-width: 940px) { .works-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .works-grid { grid-template-columns: 1fr; } }

.work-card {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease;
  display: flex;
  flex-direction: column;
}
.work-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.work-thumb {
  aspect-ratio: 4 / 3;
  background: #e9ecea;
  position: relative;
  overflow: hidden;
}
.work-thumb svg { width: 100%; height: 100%; display: block; }
.work-thumb .category {
  position: absolute;
  top: 12px; left: 12px;
  background: rgba(31,42,31,.85);
  color: #fff;
  padding: 5px 12px;
  font-size: 11px;
  letter-spacing: 0.14em;
  border-radius: 2px;
}
.work-body {
  padding: 22px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.work-body h3 {
  font-size: 16px;
  line-height: 1.6;
  margin: 0 0 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-ink);
}
.work-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 12px;
  color: var(--color-muted);
  margin-bottom: 16px;
}
.work-meta span { display: inline-flex; align-items: center; gap: 5px; letter-spacing: 0.06em; }
.work-meta .icon-dot {
  display: inline-block;
  width: 4px; height: 4px;
  background: var(--color-brand);
  border-radius: 50%;
}
.work-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-brand);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  padding-top: 12px;
  border-top: 1px solid var(--color-line);
}
.work-link::after {
  content: "→";
  transition: transform .2s;
}
.work-card:hover .work-link::after { transform: translateX(3px); }

.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 60px;
}
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border: 1px solid var(--color-line);
  font-family: var(--ff-en);
  font-size: 13px;
  color: var(--color-ink-sub);
  background: #fff;
  transition: all .15s;
  border-radius: 2px;
}
.pagination a:hover { border-color: var(--color-brand); color: var(--color-brand); }
.pagination .is-current {
  background: var(--color-brand);
  color: #fff;
  border-color: var(--color-brand);
}

.detail-main {
  position: relative;
  background: #1f2a1f;
  color: #fff;
  overflow: hidden;
}
.detail-main .visual {
  aspect-ratio: 16 / 7;
  background: #3a4b3a;
  position: relative;
  overflow: hidden;
}
.detail-main .visual svg { width: 100%; height: 100%; }
.detail-title {
  padding: clamp(30px, 4vw, 48px) var(--gutter);
  background: #fff;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-line);
}
.detail-title .inner { max-width: var(--content-max); margin: 0 auto; }
.detail-title .category {
  display: inline-block;
  background: var(--color-brand);
  color: #fff;
  padding: 4px 12px;
  font-size: 11px;
  letter-spacing: 0.14em;
  border-radius: 2px;
  margin-bottom: 14px;
}
.detail-title h1 {
  font-size: clamp(24px, 3.4vw, 34px);
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.5;
}
.detail-title .sub {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 18px;
  color: var(--color-ink-sub);
  font-size: 13px;
}
.detail-title .sub dt {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--color-muted);
  margin-right: 8px;
}
.detail-title .sub dd { display: inline; margin: 0; }

.detail-body {
  padding: clamp(60px, 8vw, 100px) 0;
  background: var(--color-bg-alt);
}
.detail-body .layout {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.detail-section {
  background: #fff;
  border: 1px solid var(--color-line);
  padding: clamp(28px, 4vw, 48px);
  margin-bottom: 24px;
}
.detail-section h2 {
  font-size: 20px;
  margin: 0 0 20px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--color-brand);
  display: inline-block;
  padding-right: 24px;
  letter-spacing: 0.06em;
}
.detail-section p {
  font-size: 15px;
  color: var(--color-ink-sub);
  line-height: 2.1;
  margin: 0 0 1em;
}
.detail-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.detail-section ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 12px;
  font-size: 14.5px;
  color: var(--color-ink-sub);
  line-height: 1.9;
}
.detail-section ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 12px;
  width: 8px; height: 2px;
  background: var(--color-brand);
}

.points-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 20px;
}
.point-item {
  background: var(--color-bg-alt);
  border-left: 3px solid var(--color-brand);
  padding: 18px 20px;
}
.point-item .num {
  font-family: var(--ff-en);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--color-brand);
  font-weight: 600;
}
.point-item h4 {
  font-size: 14px;
  margin: 6px 0 6px;
  letter-spacing: 0.04em;
}
.point-item p {
  margin: 0;
  font-size: 12.5px;
  color: var(--color-ink-sub);
  line-height: 1.8;
}
@media (max-width: 760px) { .points-list { grid-template-columns: 1fr; } }

.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 16px;
}
.gallery .ph {
  aspect-ratio: 4 / 3;
  background: #e9ecea;
  overflow: hidden;
}
.gallery .ph svg { width: 100%; height: 100%; display: block; }
@media (max-width: 720px) { .gallery { grid-template-columns: repeat(2, 1fr); } }

.ba-section {
  margin-top: 0;
}
.ba-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--color-line);
  border: 1px solid var(--color-line);
  margin-bottom: 24px;
  background-color: var(--color-line);
}
.ba-row .ba-cell {
  background: #fff;
  position: relative;
}
.ba-row .ba-cell .img {
  aspect-ratio: 4 / 3;
  background: #ddd;
  overflow: hidden;
}
.ba-row .ba-cell .img svg { width: 100%; height: 100%; display: block; }
.ba-row .ba-cell .label {
  position: absolute;
  top: 12px; left: 12px;
  background: rgba(31,42,31,.85);
  color: #fff;
  padding: 5px 12px;
  font-family: var(--ff-en);
  font-size: 11px;
  letter-spacing: 0.22em;
  font-weight: 600;
  border-radius: 2px;
}
.ba-row .ba-cell.is-after .label {
  background: var(--color-brand);
}
.ba-row .ba-cell .cap {
  font-size: 12px;
  color: var(--color-ink-sub);
  padding: 12px 16px 16px;
  letter-spacing: 0.04em;
  background: #fff;
}
@media (max-width: 720px) {
  .ba-row { grid-template-columns: 1fr; }
}

.ba-headline {
  margin-bottom: 28px;
}
.ba-headline h2 {
  font-size: 22px;
  margin: 0 0 6px;
  letter-spacing: 0.06em;
  display: inline-block;
  border-bottom: 2px solid var(--color-brand);
  padding-right: 24px;
  padding-bottom: 12px;
}
.ba-headline p {
  font-size: 13px;
  color: var(--color-ink-sub);
  margin: 16px 0 0;
}

.result-highlight {
  margin-top: 24px;
  padding: 24px 28px;
  background: linear-gradient(135deg, #1f2a1f 0%, #2e3d2e 100%);
  color: #fff;
  border-radius: 3px;
}
.result-highlight .label {
  font-family: var(--ff-en);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,.6);
}
.result-highlight .val {
  font-family: var(--ff-en);
  font-size: 32px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-accent);
  margin-top: 4px;
}
.result-highlight .desc {
  font-size: 12px;
  color: rgba(255,255,255,.72);
  margin-top: 8px;
  line-height: 1.9;
}

.related {
  background: #fff;
  padding: clamp(60px, 8vw, 100px) 0;
  border-top: 1px solid var(--color-line);
}
.related h2 {
  text-align: center;
  font-size: 22px;
  letter-spacing: 0.1em;
  margin: 0 0 8px;
}
.related .en {
  display: block;
  text-align: center;
  font-family: var(--ff-en);
  font-size: 11px;
  color: var(--color-brand);
  letter-spacing: 0.4em;
  margin-bottom: 40px;
}
.related .works-grid { max-width: var(--content-max); margin: 0 auto; padding: 0 var(--gutter); }

.contact-cta {
  background: var(--color-brand);
  color: #fff;
  padding: clamp(60px, 8vw, 90px) var(--gutter);
  text-align: center;
}
.contact-cta h2 {
  font-size: clamp(20px, 2.6vw, 26px);
  margin: 0 0 12px;
  letter-spacing: 0.1em;
}
.contact-cta p {
  font-size: 14px;
  color: rgba(255,255,255,.82);
  margin: 0 0 32px;
  line-height: 2;
}
.btn-primary {
  display: inline-block;
  padding: 16px 48px;
  background: #fff;
  color: var(--color-brand);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.2em;
  border-radius: 2px;
  transition: background .2s, color .2s, transform .2s;
}
.btn-primary:hover {
  background: var(--color-accent);
  color: var(--color-ink);
  transform: translateY(-2px);
}
.btn-ghost {
  display: inline-block;
  padding: 14px 36px;
  border: 1px solid #fff;
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.2em;
  margin-left: 12px;
  transition: background .2s;
}
.btn-ghost:hover { background: rgba(255,255,255,.1); }

.back-link {
  margin: 32px auto 0;
  max-width: 960px;
  padding: 0 var(--gutter);
  font-size: 12px;
}
.back-link a {
  color: var(--color-brand);
  font-weight: 600;
  letter-spacing: 0.14em;
}
.back-link a::before { content: "← "; }

.site-footer {
  background: #1a221a;
  color: rgba(255,255,255,.72);
  padding: 50px var(--gutter) 30px;
  font-size: 12px;
}
.site-footer .inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.site-footer .copy {
  font-family: var(--ff-en);
  letter-spacing: 0.14em;
  color: rgba(255,255,255,.4);
}
.site-footer a:hover { color: #fff; }
.site-footer nav { display: flex; gap: 24px; flex-wrap: wrap; letter-spacing: 0.08em; }