:root {
  --paper: #f4f0e6;
  --paper-deep: #e8e1d2;
  --ink: #18342f;
  --green: #1b4b43;
  --orange: #e2633f;
  --yellow: #f0c85a;
  --line: rgba(24, 52, 47, .2);
  --white: #fffdf7;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "DM Sans", "Noto Sans JP", sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; }
.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;
}
.skip-link {
  position: fixed; left: 1rem; top: -5rem; z-index: 100;
  padding: .7rem 1rem; background: var(--white); color: var(--ink);
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  height: 96px; padding: 0 clamp(1.25rem, 4vw, 4.5rem);
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(244,240,230,.97); border-bottom: 1px solid rgba(24,52,47,.1);
}
.brand { position: relative; z-index: 3; display: flex; gap: .8rem; align-items: center; font-weight: 700; letter-spacing: -.02em; }
.brand-mark {
  display: block; width: 42px; height: 42px;
  border: 1px solid var(--ink); border-radius: 50%; object-fit: cover;
}
.site-nav { display: flex; align-items: center; gap: 2rem; font-size: .84rem; font-weight: 600; }
.site-nav a { position: relative; }
.site-nav a:not(.nav-contact)::after {
  content: ""; position: absolute; left: 0; bottom: -.35rem;
  width: 100%; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right;
  transition: transform .3s ease;
}
.site-nav a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-contact { padding: .55rem 1rem; border: 1px solid var(--ink); border-radius: 2rem; }
.menu-toggle { display: none; border: 0; background: none; padding: .5rem; }
.menu-toggle > span:not(.sr-only) { display: block; width: 24px; height: 1px; margin: 5px; background: currentColor; }

.hero {
  position: relative; min-height: 760px; height: 100svh; max-height: 980px;
  padding: 9rem clamp(1.25rem, 7vw, 8rem) 4rem; display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); align-items: center;
  overflow: hidden;
}
.topography {
  position: absolute; inset: 0; opacity: .23; pointer-events: none;
  background: linear-gradient(105deg, transparent 0 65%, rgba(226,99,63,.08) 65%);
}
.hero-copy { position: relative; z-index: 2; max-width: 760px; }
.eyebrow, .section-index {
  margin: 0 0 2.2rem; font-size: .72rem; line-height: 1.2;
  font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
}
.eyebrow { display: flex; align-items: center; gap: .7rem; }
.eyebrow span { width: 34px; height: 1px; background: var(--orange); }
.hero h1 {
  margin: 0; font-size: clamp(3.4rem, 5.4vw, 7.8rem); line-height: 1.07; white-space: nowrap;
  letter-spacing: -.075em; font-weight: 500;
}
em { color: var(--orange); font-style: normal; }
.hero-lead { max-width: 600px; margin: 2.2rem 0 0; font-size: clamp(1rem, 1.3vw, 1.2rem); font-weight: 500; }
.contact-links { display: flex; flex-wrap: wrap; align-items: center; gap: 2rem; margin-top: 2.4rem; }
.button {
  display: inline-flex; align-items: center; justify-content: space-between; gap: 2.2rem;
  min-width: 215px; padding: 1rem 1.25rem; font-size: .84rem; font-weight: 700;
  transition: transform .25s, background .25s;
}
.button:hover { transform: translateY(-3px); }
.text-link { font-size: .86rem; font-weight: 700; border-bottom: 1px solid currentColor; padding: .3rem 0; }
.hero-overview { position: relative; z-index: 2; width: 100%; max-width: 560px; justify-self: end; }
.hero-overview .section-index { margin-bottom: 1.2rem; }
.hero-overview-list { border-top: 1px solid var(--line); }
.hero-overview-list a {
  position: relative; min-height: 90px; padding: 1rem 2.5rem 1rem 0;
  display: grid; grid-template-columns: 2.2rem 1fr; align-content: center;
  border-bottom: 1px solid var(--line); transition: padding .25s, color .25s;
}
.hero-overview-list a:hover { padding-left: .75rem; color: var(--orange); }
.hero-overview-list span { grid-row: 1 / 3; font-size: .65rem; color: var(--orange); font-weight: 700; }
.hero-overview-list strong { font-size: clamp(1rem, 1.5vw, 1.3rem); line-height: 1.3; }
.hero-overview-list small { margin-top: .2rem; font-size: .7rem; opacity: .65; }
.hero-overview-list i { position: absolute; top: 50%; right: .4rem; transform: translateY(-50%); font-style: normal; }
.hero-foot {
  position: absolute; left: clamp(1.25rem, 4vw, 4.5rem); right: clamp(1.25rem, 4vw, 4.5rem); bottom: 2.2rem;
  display: flex; justify-content: space-between; font-size: .68rem; letter-spacing: .1em; text-transform: uppercase;
}
.hero-foot a span { color: var(--orange); margin-left: .5rem; }

.section { padding: clamp(5rem, 10vw, 9rem) clamp(1.25rem, 7vw, 8rem); }
.section-heading h2, .activity-title h2, .contact h2 {
  margin: 0; font-size: clamp(2.5rem, 5vw, 5.5rem); line-height: 1.18;
  letter-spacing: -.06em; font-weight: 500;
}
.section-subtitle {
  margin: 1.1rem 0 0; font-size: clamp(.8rem, 1.2vw, 1rem); font-weight: 600;
  letter-spacing: .02em; opacity: .68;
}
.projects .section-subtitle { color: var(--yellow); opacity: .9; }
.activity-title .section-subtitle em { color: var(--orange); }
.activity-description { max-width: 520px; margin: 2rem 0 0; color: rgba(24,52,47,.72); font-size: .92rem; line-height: 1.9; }
.projects { background: var(--green); color: var(--white); }
.section-heading { display: grid; grid-template-columns: 1fr minmax(260px, 32%); align-items: end; gap: 4rem; margin-bottom: 5rem; }
.section-heading > p { max-width: 420px; margin: 0 0 .5rem; color: rgba(255,255,255,.72); }
.project-tools-heading { margin-top: clamp(5rem, 9vw, 9rem); }
.project-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: rgba(255,255,255,.18); }
.project-grid-works { background: rgba(0,0,0,.08); }
portfolio-project { display: block; min-width: 0; }
.project-card { background: var(--green); }
.project-card a { display: flex; flex-direction: column; height: 100%; }
.project-visual {
  position: relative; width: 100%; height: auto; min-height: 310px; max-height: 520px;
  aspect-ratio: 16 / 9; display: grid; place-items: center;
  overflow: hidden; background: var(--paper-deep); color: var(--ink);
}
.project-number { position: absolute; top: 1.2rem; left: 1.3rem; font-size: .68rem; font-weight: 700; }
.project-body { flex: 1; min-height: 330px; padding: 2.3rem; display: flex; flex-direction: column; align-items: flex-start; }
.project-meta { width: 100%; display: flex; justify-content: space-between; gap: 1rem; font-size: .62rem; letter-spacing: .07em; text-transform: uppercase; opacity: .65; }
.project-body h3 { margin: 1.5rem 0 .75rem; font-size: clamp(1.5rem, 2.3vw, 2.5rem); line-height: 1.2; letter-spacing: -.04em; }
.project-body p { margin: 0; color: rgba(255,255,255,.72); font-size: .9rem; }
.project-link { margin-top: 1.5rem; padding-top: 0; font-size: .78rem; font-weight: 700; border-bottom: 1px solid rgba(255,255,255,.45); }
.project-link b { margin-left: .4rem; color: var(--yellow); }
.project-card a:hover .project-visual > :not(.project-number) { transform: scale(1.04) rotate(-1deg); }
.project-card a:hover .project-visual > img { transform: none; }
.project-visual > * { transition: transform .5s cubic-bezier(.2,.7,.2,1); }
.playground-visual { background: #a9d4c2; }
.project-visual > img {
  display: block; width: 100%; height: 100%; min-width: 0; min-height: 0;
  max-width: 100%; max-height: 100%; padding: clamp(.75rem, 1.5vw, 1.5rem);
  object-fit: contain;
}
.expo-visual { background: var(--orange); }
.change-visual { background: #d9d7c6; }
.viewer-visual { background: var(--yellow); }
.viewer-window { width: 68%; height: 62%; border: 2px solid var(--ink); padding: 1.2rem; display: flex; flex-wrap: wrap; gap: .5rem; align-content: flex-start; }
.viewer-window span { width: 7px; height: 7px; border-radius: 50%; background: var(--orange); }
.viewer-window i { display: block; width: 100%; height: 9px; background: var(--ink); opacity: .75; margin-top: .4rem; }
.viewer-window i:nth-of-type(2) { width: 70%; }
.viewer-window i:nth-of-type(3) { height: 80px; opacity: .15; }
.tiles-visual { background: #b9d5cb; }
.tiles-stack { position: relative; width: 42%; aspect-ratio: 1; }
.tiles-stack span { position: absolute; inset: 0; border: 2px solid var(--ink); background: var(--paper); transform: rotate(-8deg) translate(-12%, 8%); }
.tiles-stack span:nth-child(2) { background: var(--yellow); transform: rotate(5deg) translate(10%, -4%); }
.tiles-stack span:nth-child(3) { background: var(--green); transform: none; }
.tiles-stack i { position: absolute; inset: 0; display: grid; place-items: center; color: var(--white); font-size: clamp(2rem, 5vw, 4.5rem); font-style: normal; font-weight: 700; letter-spacing: -.08em; }
.community-visual { background: #ff5a0a; }
.walk-visual { background: #d4a889; }
.local-maps { margin-top: clamp(4rem, 7vw, 7rem); }
.local-maps-heading { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 2rem; }
.local-maps-heading .section-index { margin-bottom: .4rem; }
.local-maps-heading h3 { margin: 0; font-size: clamp(1.5rem, 3vw, 2.8rem); line-height: 1.3; letter-spacing: -.04em; font-weight: 500; }
.local-map-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: rgba(0,0,0,.08); }
.local-map-link {
  position: relative; min-height: 200px; padding: 1.5rem; display: flex; flex-direction: column;
  background: var(--green); transition: background .25s, color .25s;
}
.local-map-link:hover { background: var(--white); color: var(--ink); }
.local-map-link > span { padding-right: 2rem; font-size: .6rem; letter-spacing: .08em; text-transform: uppercase; opacity: .6; }
.local-map-link strong { margin-top: 1.25rem; font-size: clamp(1.05rem, 1.5vw, 1.35rem); line-height: 1.45; }
.local-map-link small { margin-top: .6rem; font-size: .72rem; line-height: 1.65; opacity: .68; }
.local-map-link i { position: absolute; right: 1.4rem; top: 1.2rem; color: var(--yellow); font-style: normal; }
.local-map-link:hover i { color: var(--orange); }
.project-more { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 2.5rem; background: rgba(255,255,255,.25); }
.project-more a { padding: 1.25rem 0; display: flex; justify-content: space-between; align-items: center; background: var(--green); }
.project-more a:first-child { padding-right: 2rem; }
.project-more a:last-child { padding-left: 2rem; }
.project-more small, .project-more strong { display: block; }
.project-more small { margin-bottom: .25rem; font-size: .6rem; letter-spacing: .08em; text-transform: uppercase; opacity: .6; }
.project-more strong { font-size: .84rem; }

.activity { display: grid; grid-template-columns: .8fr 1.2fr; gap: 8vw; background: var(--paper-deep); }
.activity-title { position: sticky; top: 3rem; align-self: start; }
.activity-list { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.activity-item { display: grid; grid-template-columns: 3rem 1fr; gap: 1rem; padding: 2.3rem 0; border-bottom: 1px solid var(--line); }
.activity-no { color: var(--orange); font-size: .72rem; font-weight: 700; }
.activity-item h3 { margin: 0 0 .6rem; font-size: 1.25rem; }
.activity-item p { margin: 0; max-width: 620px; color: rgba(24,52,47,.72); font-size: .92rem; }
.community-list .activity-item { align-items: center; padding-top: 1.6rem; padding-bottom: 1.6rem; }
.community-list .activity-item h3 { margin: 0; }
.community-list .activity-item p { margin-top: .45rem; max-width: 720px; font-size: .86rem; line-height: 1.7; }
.community-list .activity-item .community-channels { margin-top: .3rem; font-size: .7rem; font-weight: 700; }
.community-list a { text-decoration-thickness: 1px; text-underline-offset: .25rem; }
.community-list a:hover { text-decoration-line: underline; }

.writing .section-heading > p { color: rgba(24,52,47,.67); }
.talk-years { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.talk-year { min-width: 0; padding: clamp(1.25rem, 2vw, 1.75rem); background: var(--paper); }
.talk-year-heading { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1.8rem; }
.talk-year-heading h3 { margin: 0; color: var(--orange); font-size: clamp(1.25rem, 2vw, 1.7rem); letter-spacing: -.03em; }
.talk-year-heading a { flex: none; font-size: .68rem; font-weight: 700; border-bottom: 1px solid var(--line); }
.talk-year-heading i { color: var(--orange); font-style: normal; }
.talk-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.talk-list li { display: grid; grid-template-columns: 3.6rem 1fr; gap: .15rem 1rem; padding: .85rem 0; border-bottom: 1px solid var(--line); }
.talk-list time { grid-row: 1 / 3; color: var(--orange); font-size: .65rem; font-weight: 700; letter-spacing: .05em; }
.talk-list span { font-size: .8rem; font-weight: 600; line-height: 1.5; }
.talk-list .talk-role { font-weight: 500; opacity: .7; }
.channel-links { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 3rem; }
.channel-links a { display: flex; justify-content: space-between; min-width: 180px; padding: .7rem 0; border-bottom: 1px solid var(--line); font-size: .78rem; font-weight: 700; }

.contact {
  position: relative; min-height: 520px; background: var(--ink); color: var(--white);
  display: flex; flex-direction: column; justify-content: center; overflow: hidden;
}
.contact h2 { position: relative; z-index: 2; font-size: clamp(3rem, 7vw, 7rem); }
.contact h2 em { color: var(--yellow); }
.contact > p:not(.section-index) { position: relative; z-index: 2; max-width: 600px; font-weight: 500; }
.button-light { background: var(--white); color: var(--ink); }
.text-link-light { color: var(--white); }

footer {
  padding: 1.5rem clamp(1.25rem, 4vw, 4.5rem); background: var(--ink); color: rgba(255,255,255,.7);
  display: flex; justify-content: space-between; align-items: center; gap: 2rem; font-size: .65rem; letter-spacing: .08em; text-transform: uppercase;
}

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: none; }
.hero .reveal { opacity: 1; transform: none; }

@media (min-width: 901px) and (max-width: 1100px) {
  .hero h1 { font-size: clamp(3.4rem, 5.4vw, 4rem); }
  .site-header { padding-left: 1.5rem; padding-right: 1.5rem; }
  .site-nav { gap: 1.15rem; font-size: .76rem; }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 76px; }
  .site-header { height: 76px; }
  .menu-toggle { display: block; position: relative; z-index: 3; }
  .site-nav {
    position: fixed; inset: 0; z-index: 2; height: 100dvh; padding: 5.5rem 2rem 1.5rem; background: var(--paper);
    flex-direction: column; justify-content: center; gap: 1.25rem; font-size: 1.25rem;
    opacity: 0; visibility: hidden; transition: opacity .25s;
    overflow: hidden;
  }
  .site-nav.is-open { opacity: 1; visibility: visible; }
  .hero { height: auto; min-height: 780px; max-height: none; grid-template-columns: 1fr; gap: 3rem; padding-top: 9rem; padding-bottom: 6rem; }
  .hero-copy { align-self: start; }
  .hero-overview { max-width: none; justify-self: stretch; }
  .hero-foot { bottom: 1.5rem; }
  .activity { grid-template-columns: 1fr; }
  .activity-title { position: static; }
  .talk-years { grid-template-columns: 1fr; }
  .section-heading { grid-template-columns: 1fr; gap: 1.5rem; margin-bottom: 3rem; }
  .local-map-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .hero { min-height: 0; padding-left: 1.25rem; padding-right: 1.25rem; }
  .hero h1 { font-size: clamp(2.4rem, 12vw, 3.5rem); white-space: nowrap; }
  .hero-lead { max-width: 88%; }
  .hero-overview-list a { min-height: 78px; }
  .hero-foot p { display: none; }
  .section { padding: 5rem 1.25rem; }
  .project-grid { grid-template-columns: minmax(0, 1fr); }
  .project-visual { height: 280px; min-height: 0; }
  .project-body { min-height: 350px; padding: 1.5rem; }
  .project-meta { flex-direction: column; gap: .2rem; }
  .local-maps-heading { display: block; }
  .local-maps-heading h3 { margin-top: 1rem; }
  .local-map-grid { grid-template-columns: 1fr; }
  .local-map-link { min-height: 170px; }
  .project-more { grid-template-columns: 1fr; }
  .project-more a:first-child, .project-more a:last-child { padding: 1.1rem 0; }
  .contact { min-height: 520px; }
  .contact h2 { font-size: clamp(1.9rem, 9.5vw, 3rem); }
  .contact h2 > span { white-space: nowrap; }
  .contact-links { align-items: flex-start; flex-direction: column; gap: 1rem; }
  footer { flex-direction: column; align-items: flex-start; gap: .2rem; }
  footer p { margin: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}