:root {
  --ink: #151515;
  --muted: #5f615c;
  --paper: #ffffff;
  --line: #cfc9bb;
  --field: #e8e1d3;
  --accent: #2d5b4f;
  --white: #fffaf0;
  --max: 1180px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, "Helvetica Neue", Arial, "Hiragino Sans", "Yu Gothic", sans-serif;
  letter-spacing: 0;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  padding: 18px clamp(20px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

.wordmark {
  font-size: 22px;
  font-weight: 740;
  line-height: 1;
}

.site-nav {
  display: flex;
  gap: clamp(16px, 3vw, 34px);
  color: var(--muted);
  font-size: 13px;
}

.site-nav a {
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.site-nav a:hover {
  border-bottom-color: var(--ink);
  color: var(--ink);
}

.hero {
  min-height: calc(100svh - 64px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  align-items: center;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(56px, 9vw, 112px) 0 clamp(44px, 7vw, 82px);
}

.hero-copy {
  width: 100%;
  max-width: none;
  text-align: center;
}

.eyebrow,
.kicker,
.section-number {
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  max-width: none;
  margin-top: 0;
  font-size: clamp(24px, 2vw, 32px);
  font-weight: 400;
  line-height: 1.2;
}

.lead {
  max-width: 660px;
  margin-top: 32px;
  font-size: clamp(14px, 1.2vw, 17px);
  line-height: 1.35;
}

.jp {
  color: #343630;
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", Inter, sans-serif;
}

.lead.jp {
  max-width: 690px;
  margin-top: 18px;
  color: var(--muted);
  font-size: clamp(12px, 1vw, 14px);
  line-height: 1.85;
}

.hero .eyebrow,
.hero .lead {
  display: none;
}

.hero-system {
  display: none;
}

.axis {
  position: absolute;
  background: var(--line);
}

.axis-one {
  left: 12%;
  right: 8%;
  top: 42%;
  height: 1px;
  transform: rotate(-14deg);
}

.axis-two {
  left: 48%;
  top: 6%;
  bottom: 9%;
  width: 1px;
  transform: rotate(18deg);
}

.node {
  position: absolute;
  display: grid;
  place-items: center;
  width: 118px;
  aspect-ratio: 1;
  border: 1px solid var(--ink);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  font-size: 13px;
  font-weight: 680;
}

.node-a {
  left: 4%;
  top: 14%;
}

.node-b {
  right: 3%;
  top: 24%;
}

.node-c {
  left: 24%;
  bottom: 10%;
  border-color: var(--accent);
  color: var(--accent);
}

.node-d {
  right: 18%;
  bottom: 22%;
}

.section {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: clamp(18px, 5vw, 80px);
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(58px, 8vw, 108px) 0;
  border-top: 1px solid var(--line);
}

h2 {
  font-size: clamp(24px, 2.6vw, 40px);
  line-height: 1.05;
}

.statement {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
  gap: clamp(24px, 5vw, 72px);
  margin-top: 34px;
}

.statement p {
  font-size: clamp(22px, 3vw, 40px);
  line-height: 1.18;
}

.statement .jp {
  color: var(--muted);
  font-size: clamp(16px, 1.8vw, 22px);
  line-height: 1.75;
}

.principles,
.work-list {
  display: grid;
  gap: 1px;
  margin-top: clamp(38px, 6vw, 74px);
  background: var(--line);
  border: 1px solid var(--line);
}

.principles article,
.work-area {
  min-height: 284px;
  padding: clamp(22px, 3vw, 34px);
  background: rgba(255, 255, 255, 0.92);
}

.boundaries .section-body {
  max-width: 860px;
}

.boundary-list {
  display: grid;
  gap: 0;
  margin-top: 34px;
  border-top: 1px solid var(--line);
}

.boundary-list + .boundary-list {
  margin-top: 28px;
}

.boundary-list p {
  margin: 0;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

.work-area {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 56px);
  min-height: auto;
}

.principles span {
  display: block;
  color: var(--accent);
  font-size: 12px;
  font-weight: 740;
  margin-bottom: 32px;
}

h3 {
  font-size: clamp(18px, 1.8vw, 24px);
  line-height: 1.16;
}

.principles p,
.work-list p,
.contact p {
  margin-top: 18px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
}

.principles .jp,
.work-list .jp,
.contact .jp {
  font-size: 14px;
  line-height: 1.8;
}

.kicker {
  margin: 0 0 26px;
  color: var(--accent);
}

.work-heading {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: clamp(18px, 3vw, 42px);
  align-items: baseline;
}

.work-heading .kicker {
  margin: 0;
}

.area-note {
  margin: 0;
  color: var(--muted);
  font-size: clamp(16px, 1.6vw, 20px);
  font-weight: 400;
  line-height: 1.35;
}

.project-list {
  display: grid;
  gap: 18px;
  align-content: start;
  margin: 0;
  padding: 0;
  list-style: none;
}

.project-list li {
  display: grid;
  grid-template-columns: minmax(150px, 0.34fr) minmax(0, 1fr);
  gap: clamp(18px, 4vw, 46px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.project-list strong,
.project-list a {
  font-size: clamp(16px, 1.5vw, 20px);
  font-weight: 720;
  line-height: 1.12;
}

.project-list a {
  border-bottom: 1px solid var(--ink);
  width: fit-content;
}

.project-list span {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

.muted-area {
  background: rgba(232, 225, 211, 0.72);
}

.contact .section-body {
  max-width: 720px;
}

.mail-link {
  display: inline-block;
  margin-top: 34px;
  border-bottom: 1px solid var(--ink);
  font-size: clamp(24px, 4vw, 48px);
  font-weight: 720;
  line-height: 1.1;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 44px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 920px) {
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .hero-system {
    min-height: 360px;
  }

  .statement,
  .principles,
  .work-area,
  .project-list li {
    grid-template-columns: 1fr;
  }

  .principles article,
  .work-area {
    min-height: auto;
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
  }

  .hero,
  .section,
  .site-footer {
    width: min(100% - 28px, var(--max));
  }

  h1 {
    font-size: clamp(22px, 7vw, 28px);
  }

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

  .section-number {
    margin-bottom: 4px;
  }

  .work-heading {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 14px;
  }

  .area-note {
    font-size: 14px;
    line-height: 1.45;
  }

  .hero-system {
    min-height: 300px;
  }

  .node {
    width: 92px;
    font-size: 12px;
  }

  .site-footer {
    flex-direction: column;
  }
}