/* ============================================================
   Trajective Dynamics Laboratory — Static Website Skeleton
   ------------------------------------------------------------
   1. Tokens / Reset
   2. Base typography and layout
   3. Header / navigation
   4. Hero and common sections
   5. Components
   6. Page-specific patterns
   7. Footer
   8. Responsive / motion / print
   ============================================================ */

:root {
  --ink: #14231d;
  --ink-soft: #3d4b45;
  --paper: #f4f0e7;
  --paper-soft: #ece8df;
  --surface: #fffdf8;
  --surface-2: #e5ece8;
  --line: rgba(20, 35, 29, 0.16);
  --line-strong: rgba(20, 35, 29, 0.32);
  --accent: #d9793d;
  --accent-soft: #f2d2b9;
  --green: #396857;
  --green-light: #a9c7ba;
  --yamami: #f0a05a;
  --yamami-soft: #f4dfca;
  --white: #ffffff;
  --black: #0c1612;
  --success: #28684d;
  --error: #a33a31;

  --font-sans:
    "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic",
    "Meiryo", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif:
    "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro",
    Georgia, serif;
  --font-mono:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;

  --content: 1180px;
  --content-narrow: 820px;
  --gutter: clamp(20px, 4vw, 64px);
  --section-space: clamp(80px, 12vw, 168px);
  --header-height: 82px;
  --radius-s: 8px;
  --radius-m: 18px;
  --radius-l: 32px;
  --shadow-s: 0 10px 30px rgba(20, 35, 29, 0.08);
  --shadow-m: 0 24px 70px rgba(20, 35, 29, 0.12);
  --transition: 220ms cubic-bezier(0.2, 0.65, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  background: var(--paper);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.85;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

img,
svg,
canvas {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-color: var(--accent);
}

p,
ul,
ol,
dl,
blockquote,
figure {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.32;
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(2.55rem, 7vw, 6.7rem);
  letter-spacing: -0.035em;
}

h2 {
  font-size: clamp(2rem, 4.5vw, 4.7rem);
  letter-spacing: -0.025em;
}

h3 {
  font-size: clamp(1.25rem, 2.1vw, 2rem);
}

h4 {
  font-size: 1.05rem;
}

::selection {
  color: var(--paper);
  background: var(--green);
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute !important;
  overflow: hidden !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  white-space: nowrap !important;
  border: 0 !important;
  clip: rect(0 0 0 0) !important;
  clip-path: inset(50%) !important;
}

.skip-link {
  position: fixed;
  z-index: 9999;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  color: var(--paper);
  background: var(--ink);
  border-radius: var(--radius-s);
  transform: translateY(-150%);
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(calc(100% - (var(--gutter) * 2)), var(--content));
  margin-inline: auto;
}

.container--narrow {
  width: min(calc(100% - (var(--gutter) * 2)), var(--content-narrow));
  margin-inline: auto;
}

.section {
  padding-block: var(--section-space);
}

.section--compact {
  padding-block: clamp(56px, 8vw, 104px);
}

.section--surface {
  background: var(--surface);
}

.section--green {
  color: var(--paper);
  background: var(--ink);
}

.section--yamami {
  background: var(--yamami-soft);
}

.section-header {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(280px, 1fr);
  gap: clamp(28px, 6vw, 90px);
  align-items: start;
  margin-bottom: clamp(44px, 7vw, 90px);
}

.section-header__eyebrow,
.eyebrow {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 20px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.77rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.section--green .section-header__eyebrow,
.section--green .eyebrow {
  color: var(--green-light);
}

.section-header__eyebrow::before,
.eyebrow::before {
  width: 34px;
  height: 1px;
  content: "";
  background: currentColor;
}

.section-header__lead {
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 1.4vw, 1.2rem);
}

.section--green .section-header__lead {
  color: rgba(244, 240, 231, 0.72);
}

.kicker {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.lead {
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.65vw, 1.35rem);
  line-height: 1.9;
}

.text-large {
  font-size: clamp(1.22rem, 2.2vw, 1.75rem);
  line-height: 1.8;
}

.text-muted {
  color: var(--ink-soft);
}

.text-note {
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.prose {
  max-width: 72ch;
}

.prose p + p {
  margin-top: 1.35em;
}

.prose h2,
.prose h3 {
  margin-top: 2.4em;
  margin-bottom: 0.8em;
}

.prose ul,
.prose ol {
  padding-left: 1.35em;
}

.prose blockquote {
  margin: 2.5em 0;
  padding: 1.6em 0 1.6em 1.6em;
  font-family: var(--font-serif);
  font-size: clamp(1.16rem, 2vw, 1.55rem);
  border-left: 3px solid var(--accent);
}

.rule {
  height: 1px;
  margin: 0;
  border: 0;
  background: var(--line);
}

/* ------------------------------------------------------------
   Header / Navigation
   ------------------------------------------------------------ */

.site-header {
  position: sticky;
  z-index: 1000;
  top: 0;
  height: var(--header-height);
  background: rgba(244, 240, 231, 0.9);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px);
  transition:
    border-color var(--transition),
    background var(--transition),
    box-shadow var(--transition);
}

.site-header.is-scrolled {
  background: rgba(244, 240, 231, 0.96);
  border-color: var(--line);
  box-shadow: 0 6px 30px rgba(20, 35, 29, 0.05);
}

.site-header__inner {
  display: flex;
  width: min(calc(100% - 40px), 1440px);
  height: 100%;
  margin-inline: auto;
  gap: 28px;
  align-items: center;
  justify-content: space-between;
}

.wordmark {
  display: inline-flex;
  flex: 0 0 auto;
  gap: 13px;
  align-items: center;
  color: var(--ink);
  text-decoration: none;
}

.wordmark__symbol {
  position: relative;
  width: 38px;
  height: 38px;
  overflow: hidden;
  background: var(--ink);
  border-radius: 50%;
}

.wordmark__symbol::before,
.wordmark__symbol::after {
  position: absolute;
  left: 4px;
  width: 30px;
  height: 15px;
  content: "";
  border: 2px solid var(--paper);
  border-right-color: transparent;
  border-bottom-color: transparent;
  border-radius: 50%;
}

.wordmark__symbol::before {
  top: 8px;
  transform: rotate(18deg);
}

.wordmark__symbol::after {
  bottom: 7px;
  border-color: var(--green-light);
  border-right-color: transparent;
  border-bottom-color: transparent;
  transform: rotate(198deg);
}

.wordmark__ja {
  display: block;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.04em;
}

.wordmark__en {
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  line-height: 1.2;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.primary-nav {
  display: flex;
  min-width: 0;
  gap: clamp(10px, 1.25vw, 22px);
  align-items: center;
}

.primary-nav__list {
  display: flex;
  margin: 0;
  padding: 0;
  gap: clamp(6px, 1vw, 16px);
  align-items: center;
  list-style: none;
}

.primary-nav__link {
  position: relative;
  display: inline-flex;
  padding: 9px 2px;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: clamp(0.64rem, 0.75vw, 0.76rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.07em;
  text-decoration: none;
}

.primary-nav__link::after {
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition);
}

.primary-nav__link:hover::after,
.primary-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.primary-nav__link[aria-current="page"] {
  color: var(--ink);
}

.header-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
  align-items: center;
}

.lang-link {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transition:
    color var(--transition),
    background var(--transition);
}

.lang-link:hover {
  color: var(--paper);
  background: var(--ink);
}

.menu-toggle {
  position: relative;
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  cursor: pointer;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  position: absolute;
  left: 12px;
  width: 18px;
  height: 1px;
  content: "";
  background: currentColor;
  transition:
    transform var(--transition),
    opacity var(--transition),
    top var(--transition);
}

.menu-toggle::before {
  top: 15px;
}
.menu-toggle span {
  top: 21px;
}
.menu-toggle::after {
  top: 27px;
}

.menu-toggle[aria-expanded="true"]::before {
  top: 21px;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"]::after {
  top: 21px;
  transform: rotate(-45deg);
}

.header-progress {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
}

.header-progress__bar {
  width: 100%;
  height: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
}

/* ------------------------------------------------------------
   Hero / Page Hero
   ------------------------------------------------------------ */

.hero {
  position: relative;
  min-height: calc(100svh - var(--header-height));
  overflow: clip;
  background: var(--paper);
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: calc(100svh - var(--header-height));
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, 0.88fr);
  gap: clamp(20px, 4vw, 70px);
  align-items: center;
  padding-block: clamp(56px, 8vh, 110px);
}

.hero__copy {
  max-width: 820px;
}

.hero__title {
  max-width: 8.6em;
  margin-bottom: 32px;
}

.hero__title small {
  display: block;
  margin-bottom: 22px;
  font-family: var(--font-mono);
  font-size: clamp(0.75rem, 1vw, 0.92rem);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero__tagline {
  max-width: 18em;
  margin: 0 0 30px;
  font-family: var(--font-serif);
  font-size: clamp(1.45rem, 3vw, 3.2rem);
  font-weight: 500;
  line-height: 1.48;
  letter-spacing: 0.015em;
}

.hero__lead {
  max-width: 650px;
  margin-bottom: 38px;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.35vw, 1.2rem);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero__visual {
  position: relative;
  align-self: stretch;
  min-height: 520px;
}

.hero__canvas-wrap {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: var(--ink);
  border-radius: min(5vw, 54px) min(5vw, 54px) min(5vw, 54px) 140px;
  box-shadow: var(--shadow-m);
}

#trajectory-canvas {
  width: 100%;
  height: 100%;
}

.animation-toggle {
  position: absolute;
  z-index: 2;
  right: 18px;
  bottom: 18px;
  display: inline-flex;
  padding: 9px 13px;
  gap: 7px;
  align-items: center;
  color: var(--paper);
  background: rgba(12, 22, 18, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.hero__coordinate {
  position: absolute;
  z-index: 3;
  top: 25px;
  left: 25px;
  color: rgba(244, 240, 231, 0.62);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  line-height: 1.6;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero__side-label {
  position: absolute;
  z-index: 3;
  right: -54px;
  top: 50%;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transform: rotate(90deg) translateY(-50%);
}

.hero__scroll {
  position: absolute;
  z-index: 3;
  bottom: 20px;
  left: var(--gutter);
  display: flex;
  gap: 12px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-decoration: none;
  text-transform: uppercase;
}

.hero__scroll::before {
  width: 44px;
  height: 1px;
  content: "";
  background: currentColor;
}

.page-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(78px, 11vw, 150px) clamp(70px, 9vw, 120px);
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.page-hero::after {
  position: absolute;
  top: -150px;
  right: -130px;
  width: min(45vw, 650px);
  aspect-ratio: 1;
  content: "";
  border: 1px solid var(--line-strong);
  border-radius: 48% 52% 56% 44% / 56% 36% 64% 44%;
  transform: rotate(22deg);
}

.page-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.7fr);
  gap: clamp(38px, 8vw, 120px);
  align-items: end;
}

.page-hero__title {
  margin-top: 16px;
  font-size: clamp(3rem, 7vw, 7.5rem);
}

.page-hero__en {
  display: block;
  margin-top: 18px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 1.1vw, 1rem);
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.page-hero__lead {
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.55vw, 1.28rem);
}

.breadcrumbs {
  display: flex;
  margin: 0 0 26px;
  padding: 0;
  gap: 10px;
  align-items: center;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.67rem;
  letter-spacing: 0.08em;
  list-style: none;
  text-transform: uppercase;
}

.breadcrumbs li + li::before {
  margin-right: 10px;
  content: "/";
  opacity: 0.45;
}

.breadcrumbs a {
  text-decoration: none;
}

/* ------------------------------------------------------------
   Buttons / Links
   ------------------------------------------------------------ */

.button {
  display: inline-flex;
  min-height: 48px;
  padding: 12px 20px;
  gap: 12px;
  align-items: center;
  justify-content: center;
  color: var(--paper);
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-decoration: none;
  transition:
    color var(--transition),
    background var(--transition),
    border-color var(--transition),
    transform var(--transition);
}

.button::after {
  content: "↗";
  font-size: 1rem;
  line-height: 1;
}

.button:hover {
  color: var(--ink);
  background: var(--accent-soft);
  border-color: var(--accent);
  text-decoration: none;
  transform: translateY(-2px);
}

.button--outline {
  color: var(--ink);
  background: transparent;
  border-color: var(--line-strong);
}

.button--outline:hover {
  color: var(--paper);
  background: var(--ink);
  border-color: var(--ink);
}

.button--light {
  color: var(--ink);
  background: var(--paper);
  border-color: var(--paper);
}

.button--light:hover {
  color: var(--paper);
  background: var(--accent);
  border-color: var(--accent);
}

.text-link {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.77rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-decoration: none;
}

.text-link::after {
  display: inline-grid;
  width: 30px;
  height: 30px;
  content: "↗";
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  transition:
    color var(--transition),
    background var(--transition),
    transform var(--transition);
}

.text-link:hover::after {
  color: var(--paper);
  background: var(--ink);
  transform: translate(3px, -3px);
}

/* ------------------------------------------------------------
   Grids / Cards
   ------------------------------------------------------------ */

.grid {
  display: grid;
  gap: 24px;
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(36px, 8vw, 120px);
  align-items: center;
}

.split--top {
  align-items: start;
}

.card {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  transition:
    border-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
}

.card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-s);
  transform: translateY(-4px);
}

.card__body {
  padding: clamp(22px, 3vw, 36px);
}

.card__label {
  display: block;
  margin-bottom: 18px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.card__title {
  margin-bottom: 16px;
}

.card__text {
  margin: 0;
  color: var(--ink-soft);
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  margin-top: 24px;
  gap: 8px 16px;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.card__link {
  position: absolute;
  z-index: 2;
  inset: 0;
}

.card__link span {
  position: absolute;
  overflow: hidden;
  width: 1px;
  height: 1px;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.media-card__image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--paper-soft);
}

.media-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms cubic-bezier(0.2, 0.7, 0.3, 1);
}

.media-card:hover .media-card__image img {
  transform: scale(1.035);
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px;
}

.theme-card {
  grid-column: span 4;
  min-height: 330px;
  padding: clamp(24px, 3.2vw, 40px);
  display: flex;
  flex-direction: column;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
  transition:
    color var(--transition),
    background var(--transition),
    transform var(--transition);
}

.theme-card:nth-child(1),
.theme-card:nth-child(5) {
  grid-column: span 8;
}

.theme-card:hover {
  color: var(--paper);
  background: var(--ink);
  transform: translateY(-4px);
}

.theme-card__number {
  margin-bottom: auto;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.theme-card__en {
  display: block;
  margin-top: 8px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.67rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.theme-card:hover .theme-card__en,
.theme-card:hover .theme-card__text {
  color: rgba(244, 240, 231, 0.72);
}

.theme-card__title {
  margin-top: 70px;
  margin-bottom: 18px;
}

.theme-card__text {
  margin: 0;
  color: var(--ink-soft);
}

.project-list {
  display: grid;
  gap: 18px;
}

.project-card {
  position: relative;
  display: grid;
  min-height: 260px;
  grid-template-columns: 0.42fr 1fr;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  transition:
    transform var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.project-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-s);
  transform: translateY(-3px);
}

.project-card__image {
  min-height: 100%;
  overflow: hidden;
  background: var(--surface-2);
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms cubic-bezier(0.2, 0.7, 0.3, 1);
}

.project-card:hover .project-card__image img {
  transform: scale(1.04);
}

.project-card__body {
  display: grid;
  padding: clamp(24px, 4vw, 48px);
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: start;
}

.project-card__type {
  margin-bottom: 16px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.13em;
}

.project-card__summary {
  max-width: 65ch;
  margin: 18px 0 0;
  color: var(--ink-soft);
}

.project-card__details {
  margin-top: 24px;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.7;
}

.project-card__arrow {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.project-card__link {
  position: absolute;
  z-index: 2;
  inset: 0;
}

.project-card__link span {
  position: absolute;
  overflow: hidden;
  width: 1px;
  height: 1px;
  clip: rect(0 0 0 0);
}

.publication-list {
  border-top: 1px solid var(--line-strong);
}

.publication-item {
  display: grid;
  padding-block: 30px;
  grid-template-columns: 90px minmax(0, 1fr) 44px;
  gap: clamp(16px, 4vw, 52px);
  align-items: start;
  border-bottom: 1px solid var(--line);
}

.publication-item[hidden] {
  display: none;
}

.publication-item__year {
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
}

.publication-item__title {
  margin-bottom: 10px;
  font-size: clamp(1.08rem, 1.8vw, 1.42rem);
  line-height: 1.55;
}

.publication-item__authors,
.publication-item__journal,
.publication-item__summary {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.publication-item__summary {
  margin-top: 12px;
}

.publication-item__doi {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  text-decoration: none;
  transition:
    color var(--transition),
    background var(--transition),
    transform var(--transition);
}

.publication-item__doi:hover {
  color: var(--paper);
  background: var(--ink);
  transform: translate(2px, -2px);
}

.tag-list {
  display: flex;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.tag {
  display: inline-flex;
  padding: 6px 10px;
  align-items: center;
  color: var(--ink-soft);
  background: rgba(238, 242, 241, 0.947);
  /*background: rgba(57, 104, 87, 0.08); */
  border: 1px solid rgba(57, 104, 87, 0.18);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  line-height: 1.2;
}

.filter-bar {
  display: flex;
  margin-bottom: 34px;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.filter-button {
  padding: 8px 13px;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  transition:
    color var(--transition),
    background var(--transition),
    border-color var(--transition);
}

.filter-button:hover,
.filter-button.is-active {
  color: var(--paper);
  background: var(--ink);
  border-color: var(--ink);
}

.search-field {
  position: relative;
  margin-left: auto;
  min-width: min(100%, 280px);
}

.search-field input {
  width: 100%;
  min-height: 42px;
  padding: 8px 40px 8px 14px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
}

.search-field::after {
  position: absolute;
  top: 50%;
  right: 14px;
  content: "⌕";
  transform: translateY(-50%);
}

.empty-state {
  padding: 48px;
  text-align: center;
  background: var(--surface);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-m);
}

/* ------------------------------------------------------------
   Concept / diagrams / timelines
   ------------------------------------------------------------ */

.definition-panel {
  padding: clamp(34px, 6vw, 82px);
  color: var(--paper);
  background: var(--ink);
  border-radius: var(--radius-l);
}

.definition-panel__label {
  margin-bottom: 30px;
  color: var(--green-light);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.definition-panel__text {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.8vw, 2.4rem);
  line-height: 1.78;
}

.definition-panel__plain {
  margin: 36px 0 0;
  padding-top: 30px;
  color: rgba(244, 240, 231, 0.72);
  border-top: 1px solid rgba(244, 240, 231, 0.2);
}

.concept-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.concept-card {
  padding: clamp(28px, 4vw, 48px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
}

.concept-card__character {
  display: grid;
  width: 62px;
  height: 62px;
  margin-bottom: 44px;
  place-items: center;
  color: var(--paper);
  background: var(--green);
  border-radius: 50%;
  font-family: var(--font-serif);
  font-size: 1.6rem;
}

.process-line {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
}

.process-step {
  position: relative;
  min-height: 280px;
  padding: clamp(24px, 3vw, 40px);
  background: var(--surface);
}

.process-step + .process-step {
  border-left: 1px solid var(--line-strong);
}

.process-step::after {
  position: absolute;
  z-index: 1;
  top: 38px;
  right: -14px;
  display: grid;
  width: 28px;
  height: 28px;
  content: "→";
  place-items: center;
  color: var(--paper);
  background: var(--ink);
  border-radius: 50%;
}

.process-step:last-child::after {
  display: none;
}

.process-step__number {
  display: block;
  margin-bottom: 72px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
}

.relationship-diagram {
  position: relative;
  min-height: 520px;
  overflow: hidden;
  color: var(--paper);
  background: var(--ink);
  border-radius: var(--radius-l);
}

.relationship-diagram__node {
  position: absolute;
  z-index: 2;
  display: grid;
  width: clamp(120px, 16vw, 190px);
  aspect-ratio: 1;
  padding: 18px;
  place-items: center;
  text-align: center;
  background: rgba(244, 240, 231, 0.08);
  border: 1px solid rgba(244, 240, 231, 0.38);
  border-radius: 50%;
  font-size: clamp(0.8rem, 1.2vw, 1rem);
  backdrop-filter: blur(8px);
}

.relationship-diagram__node:nth-child(1) {
  top: 7%;
  left: 11%;
}
.relationship-diagram__node:nth-child(2) {
  top: 7%;
  right: 11%;
}
.relationship-diagram__node:nth-child(3) {
  bottom: 7%;
  left: 11%;
}
.relationship-diagram__node:nth-child(4) {
  bottom: 7%;
  right: 11%;
}
.relationship-diagram__node--center {
  top: 50% !important;
  left: 50% !important;
  right: auto !important;
  bottom: auto !important;
  width: clamp(150px, 19vw, 230px);
  color: var(--ink);
  background: var(--paper);
  border-color: var(--paper);
  font-weight: 700;
  transform: translate(-50%, -50%);
}

.relationship-diagram__line {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 70%;
  height: 70%;
  border: 1px solid rgba(169, 199, 186, 0.5);
  border-radius: 48% 52% 52% 48% / 45% 42% 58% 55%;
  transform: translate(-50%, -50%) rotate(18deg);
}

.question-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: questions;
}

.question-list li {
  display: grid;
  padding-block: 24px;
  grid-template-columns: 70px 1fr;
  gap: 20px;
  align-items: start;
  border-bottom: 1px solid var(--line);
  counter-increment: questions;
  font-family: var(--font-serif);
  font-size: clamp(1.12rem, 2vw, 1.6rem);
}

.question-list li::before {
  color: var(--accent);
  content: "Q" counter(questions, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
}

/* ------------------------------------------------------------
   Education / People / Yamami / Journal / Join
   ------------------------------------------------------------ */

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-l);
}

.pillar {
  min-height: 420px;
  padding: clamp(30px, 4vw, 58px);
  background: var(--surface);
}

.pillar + .pillar {
  border-left: 1px solid var(--line-strong);
}

.pillar__character {
  display: block;
  margin-bottom: 80px;
  color: var(--green);
  font-family: var(--font-serif);
  font-size: clamp(3rem, 7vw, 7rem);
  line-height: 1;
}

.learning-steps {
  display: grid;
  gap: 0;
}

.learning-step {
  display: grid;
  padding-block: 30px;
  grid-template-columns: 110px 0.55fr 1fr;
  gap: clamp(20px, 5vw, 80px);
  align-items: start;
  border-top: 1px solid var(--line);
}

.learning-step:last-child {
  border-bottom: 1px solid var(--line);
}

.learning-step__number {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
}

.profile-hero {
  display: grid;
  grid-template-columns: 0.72fr 1fr;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
}

.profile-hero__image {
  min-height: 620px;
  background: var(--surface-2);
}

.profile-hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-hero__body {
  padding: clamp(34px, 6vw, 82px);
}

.profile-hero__name {
  margin-bottom: 8px;
  font-size: clamp(2rem, 5vw, 4.8rem);
}

.profile-hero__en {
  display: block;
  margin-bottom: 26px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 32px;
  list-style: none;
}

.timeline::before {
  position: absolute;
  top: 7px;
  bottom: 7px;
  left: 6px;
  width: 1px;
  content: "";
  background: var(--line-strong);
}

.timeline li {
  position: relative;
  padding: 0 0 34px 22px;
}

.timeline li::before {
  position: absolute;
  top: 7px;
  left: -31px;
  width: 11px;
  height: 11px;
  content: "";
  background: var(--paper);
  border: 3px solid var(--accent);
  border-radius: 50%;
}

.timeline time {
  display: block;
  margin-bottom: 5px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
}

.person-card {
  min-height: 360px;
}

.person-card__image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--surface-2);
}

.person-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.person-card__body {
  padding: 24px;
}

.manifesto {
  position: relative;
  overflow: hidden;
  padding: clamp(50px, 9vw, 120px);
  color: var(--paper);
  background: var(--ink);
  border-radius: var(--radius-l);
}

.manifesto::after {
  position: absolute;
  right: -8%;
  bottom: -22%;
  width: 55%;
  aspect-ratio: 1;
  content: "";
  border: 1px solid rgba(244, 240, 231, 0.22);
  border-radius: 50% 40% 54% 46%;
  transform: rotate(28deg);
}

.manifesto__text {
  position: relative;
  z-index: 1;
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.55rem, 4vw, 4.2rem);
  line-height: 1.72;
}

.manifesto__text strong {
  color: var(--yamami);
  font-weight: 500;
}

.yamami-value {
  padding: 30px 0;
  border-top: 1px solid rgba(20, 35, 29, 0.25);
}

.yamami-value:last-child {
  border-bottom: 1px solid rgba(20, 35, 29, 0.25);
}

.yamami-value__head {
  display: grid;
  grid-template-columns: 65px 0.45fr 1fr;
  gap: 22px;
  align-items: start;
}

.yamami-value__number {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.journal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.journal-card {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}

.journal-card:hover {
  box-shadow: var(--shadow-s);
  transform: translateY(-4px);
}

.journal-card__image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.journal-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms cubic-bezier(0.2, 0.7, 0.3, 1);
}

.journal-card:hover .journal-card__image img {
  transform: scale(1.035);
}

.journal-card__body {
  padding: 24px;
}

.journal-card__meta {
  display: flex;
  margin-bottom: 14px;
  gap: 12px;
  align-items: center;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.64rem;
}

.journal-card__category {
  color: var(--green);
  font-weight: 700;
}

.journal-card__title {
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.journal-card__excerpt {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.sample-badge {
  display: inline-flex;
  padding: 4px 7px;
  color: var(--ink);
  background: var(--accent-soft);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 700;
}

.join-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.join-card {
  min-height: 360px;
  padding: clamp(30px, 5vw, 60px);
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
}

.join-card__icon {
  display: grid;
  width: 52px;
  height: 52px;
  margin-bottom: auto;
  place-items: center;
  color: var(--paper);
  background: var(--green);
  border-radius: 50%;
  font-family: var(--font-mono);
}

.join-card__title {
  margin-top: 70px;
  margin-bottom: 18px;
}

.join-card .text-link {
  margin-top: 24px;
}

/* ------------------------------------------------------------
   Tables / Details / Forms / Map
   ------------------------------------------------------------ */

.info-table {
  width: 100%;
  border-collapse: collapse;
  border-top: 1px solid var(--line-strong);
}

.info-table th,
.info-table td {
  padding: 20px 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.info-table th {
  width: 28%;
  padding-right: 28px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.details-list {
  border-top: 1px solid var(--line-strong);
}

.details-list details {
  border-bottom: 1px solid var(--line);
}

.details-list summary {
  position: relative;
  padding: 24px 50px 24px 0;
  cursor: pointer;
  font-size: 1.06rem;
  font-weight: 600;
  list-style: none;
}

.details-list summary::-webkit-details-marker {
  display: none;
}

.details-list summary::after {
  position: absolute;
  right: 4px;
  top: 50%;
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.25rem;
  transform: translateY(-50%);
}

.details-list details[open] summary::after {
  content: "−";
}

.details-list__body {
  max-width: 70ch;
  padding: 0 0 28px;
  color: var(--ink-soft);
}

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

.form-field {
  display: grid;
  gap: 8px;
}

.form-field--full {
  grid-column: 1 / -1;
}

.form-field label,
.form-field legend {
  font-size: 0.84rem;
  font-weight: 700;
}

.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 13px 15px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
}

.form-field textarea {
  min-height: 190px;
  resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  border-color: var(--green);
  outline: 3px solid rgba(57, 104, 87, 0.16);
}

.form-checkbox {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.form-checkbox input {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 5px;
}

.form-status {
  margin-top: 20px;
  padding: 14px 16px;
  border-radius: var(--radius-s);
}

.form-status.is-success {
  color: var(--success);
  background: rgba(40, 104, 77, 0.09);
  border: 1px solid rgba(40, 104, 77, 0.25);
}

.form-status.is-error {
  color: var(--error);
  background: rgba(163, 58, 49, 0.08);
  border: 1px solid rgba(163, 58, 49, 0.25);
}

.map-placeholder {
  overflow: hidden;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
}

.map-placeholder img {
  width: 100%;
}

.notice {
  padding: 22px 24px;
  background: var(--surface-2);
  border-left: 4px solid var(--green);
  border-radius: var(--radius-s);
}

/* ------------------------------------------------------------
   Article / Project detail
   ------------------------------------------------------------ */

.article-header {
  padding-block: clamp(70px, 10vw, 140px) clamp(46px, 7vw, 86px);
  border-bottom: 1px solid var(--line);
}

.article-header__inner {
  max-width: 980px;
}

.article-header__meta {
  display: flex;
  margin-bottom: 22px;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.article-header__title {
  font-size: clamp(2.3rem, 6vw, 6.2rem);
  line-height: 1.23;
}

.article-header__lead {
  max-width: 760px;
  margin: 30px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.03rem, 1.6vw, 1.3rem);
}

.article-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 780px);
  gap: clamp(44px, 8vw, 120px);
  justify-content: center;
  align-items: start;
}

.article-aside {
  position: sticky;
  top: calc(var(--header-height) + 30px);
  font-family: var(--font-mono);
  font-size: 0.67rem;
}

.article-aside ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.article-aside li + li {
  margin-top: 12px;
}

.article-aside a {
  color: var(--ink-soft);
  text-decoration: none;
}

.article-aside a:hover {
  color: var(--accent);
}

.project-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
}

.project-fact {
  padding: 24px;
}

.project-fact + .project-fact {
  border-left: 1px solid var(--line);
}

.project-fact dt {
  margin-bottom: 8px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
}

.project-fact dd {
  margin: 0;
  font-size: 0.9rem;
}

/* ------------------------------------------------------------
   Calls to action / footer
   ------------------------------------------------------------ */

.cta-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(42px, 8vw, 100px);
  color: var(--paper);
  background: var(--ink);
  border-radius: var(--radius-l);
}

.cta-panel::after {
  position: absolute;
  right: -10%;
  bottom: -75%;
  width: 60%;
  aspect-ratio: 1;
  content: "";
  border: 1px solid rgba(244, 240, 231, 0.24);
  border-radius: 46% 54% 38% 62%;
}

.cta-panel__content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: end;
}

.cta-panel__title {
  max-width: 760px;
  margin-bottom: 20px;
  font-size: clamp(2rem, 5vw, 5.2rem);
}

.cta-panel__text {
  max-width: 700px;
  margin: 0;
  color: rgba(244, 240, 231, 0.72);
}

.site-footer {
  padding: clamp(64px, 9vw, 118px) 0 28px;
  color: var(--paper);
  background: var(--black);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: clamp(40px, 8vw, 120px);
  padding-bottom: clamp(50px, 8vw, 100px);
}

.site-footer .wordmark {
  color: var(--paper);
}

.site-footer__statement {
  max-width: 460px;
  margin: 32px 0 0;
  color: rgba(244, 240, 231, 0.68);
}

.site-footer__heading {
  margin-bottom: 18px;
  color: var(--green-light);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-footer__nav,
.site-footer__contact {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer__nav li + li,
.site-footer__contact li + li {
  margin-top: 10px;
}

.site-footer__nav a,
.site-footer__contact a {
  color: rgba(244, 240, 231, 0.78);
  text-decoration: none;
}

.site-footer__nav a:hover,
.site-footer__contact a:hover {
  color: var(--paper);
}

.site-footer__bottom {
  display: flex;
  padding-top: 24px;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
  color: rgba(244, 240, 231, 0.48);
  border-top: 1px solid rgba(244, 240, 231, 0.14);
  font-family: var(--font-mono);
  font-size: 0.61rem;
}

.site-footer__bottom-links {
  display: flex;
  gap: 16px;
}

.site-footer__bottom a {
  text-decoration: none;
}

.back-to-top {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
}

/* ------------------------------------------------------------
   Reveal utilities
   ------------------------------------------------------------ */

.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 720ms cubic-bezier(0.2, 0.7, 0.3, 1),
    transform 720ms cubic-bezier(0.2, 0.7, 0.3, 1);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.js [data-reveal-delay="1"] {
  transition-delay: 80ms;
}
.js [data-reveal-delay="2"] {
  transition-delay: 160ms;
}
.js [data-reveal-delay="3"] {
  transition-delay: 240ms;
}

/* ------------------------------------------------------------
   Responsive
   ------------------------------------------------------------ */

@media (max-width: 1180px) {
  .primary-nav__list {
    gap: 8px;
  }

  .primary-nav__link {
    font-size: 0.62rem;
  }

  .hero__side-label {
    display: none;
  }

  .theme-card,
  .theme-card:nth-child(1),
  .theme-card:nth-child(5) {
    grid-column: span 6;
  }

  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1020px) {
  :root {
    --header-height: 72px;
  }

  .site-header {
    background: rgba(244, 240, 231, 0.98);
    backdrop-filter: none;
  }

  .primary-nav {
    position: fixed;
    z-index: 990;
    top: var(--header-height);
    right: 0;
    bottom: auto;
    left: 0;
    height: calc(100dvh - var(--header-height));
    display: block;
    padding: 30px var(--gutter) 60px;
    overflow-y: auto;
    visibility: hidden;
    background: var(--paper);
    opacity: 0;
    transform: translateY(-12px);
    transition:
      visibility var(--transition),
      opacity var(--transition),
      transform var(--transition);
  }

  body.nav-open .primary-nav {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .primary-nav__list {
    display: grid;
    gap: 0;
  }

  .primary-nav__link {
    display: flex;
    padding: 20px 0;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
    font-size: 0.85rem;
  }

  .primary-nav__link::after {
    position: static;
    width: auto;
    height: auto;
    content: "↗";
    background: none;
    transform: none;
  }

  .menu-toggle {
    display: block;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    padding-bottom: 100px;
  }

  .hero__visual {
    min-height: min(72vw, 660px);
  }

  .page-hero__inner,
  .section-header,
  .split,
  .profile-hero,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .page-hero__lead {
    max-width: 720px;
  }

  .section-header__lead {
    max-width: 720px;
  }

  .project-card {
    grid-template-columns: 0.48fr 1fr;
  }

  .process-line,
  .pillar-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-step:nth-child(3),
  .pillar:nth-child(3) {
    border-top: 1px solid var(--line-strong);
  }

  .process-step:nth-child(3) {
    border-left: 0;
  }

  .process-step:nth-child(2)::after {
    display: none;
  }

  .pillar:nth-child(3) {
    grid-column: 1 / -1;
    border-left: 0;
  }

  .profile-hero__image {
    min-height: 520px;
  }

  .article-aside {
    position: static;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--line);
  }

  .article-aside ul {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 20px;
  }

  .article-aside li + li {
    margin-top: 0;
  }

  .project-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .project-fact:nth-child(3) {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .project-fact:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .site-footer__top {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  :root {
    --gutter: 20px;
    --section-space: 76px;
  }

  body {
    font-size: 15px;
  }

  .site-header__inner {
    width: calc(100% - 28px);
  }

  .wordmark__symbol {
    width: 34px;
    height: 34px;
  }

  .wordmark__ja {
    font-size: 0.87rem;
  }

  .wordmark__en {
    display: none;
  }

  .hero__title {
    max-width: none;
  }

  .hero__visual {
    min-height: 470px;
  }

  .hero__canvas-wrap {
    border-radius: 30px 30px 30px 80px;
  }

  .hero__scroll {
    display: none;
  }

  .page-hero::after {
    width: 80vw;
  }

  .grid--2,
  .grid--3,
  .grid--4,
  .concept-cards,
  .journal-grid,
  .join-cards,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .theme-card,
  .theme-card:nth-child(1),
  .theme-card:nth-child(5) {
    grid-column: 1 / -1;
    min-height: 285px;
  }

  .project-card {
    grid-template-columns: 1fr;
  }

  .project-card__image {
    aspect-ratio: 16 / 9;
  }

  .project-card__body {
    grid-template-columns: 1fr;
  }

  .project-card__arrow {
    display: none;
  }

  .publication-item {
    grid-template-columns: 56px minmax(0, 1fr);
  }

  .publication-item__doi {
    grid-column: 2;
  }

  .filter-bar {
    align-items: stretch;
  }

  .search-field {
    width: 100%;
    margin-left: 0;
  }

  .process-line,
  .pillar-grid {
    grid-template-columns: 1fr;
  }

  .process-step + .process-step,
  .pillar + .pillar {
    border-top: 1px solid var(--line-strong);
    border-left: 0;
  }

  .process-step::after {
    top: auto;
    right: 30px;
    bottom: -14px;
    transform: rotate(90deg);
  }

  .process-step:nth-child(2)::after {
    display: grid;
  }

  .pillar:nth-child(3) {
    grid-column: auto;
  }

  .relationship-diagram {
    min-height: 650px;
  }

  .relationship-diagram__node:nth-child(1) {
    top: 4%;
    left: 5%;
  }
  .relationship-diagram__node:nth-child(2) {
    top: 4%;
    right: 5%;
  }
  .relationship-diagram__node:nth-child(3) {
    bottom: 4%;
    left: 5%;
  }
  .relationship-diagram__node:nth-child(4) {
    bottom: 4%;
    right: 5%;
  }

  .learning-step {
    grid-template-columns: 54px 1fr;
  }

  .learning-step__text {
    grid-column: 2;
  }

  .profile-hero__image {
    min-height: 390px;
  }

  .yamami-value__head {
    grid-template-columns: 44px 1fr;
  }

  .yamami-value__text {
    grid-column: 2;
  }

  .project-facts {
    grid-template-columns: 1fr;
  }

  .project-fact + .project-fact,
  .project-fact:nth-child(3),
  .project-fact:nth-child(4) {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .cta-panel__content {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .site-footer__top {
    grid-template-columns: 1fr;
  }

  .site-footer__brand {
    grid-column: auto;
  }

  .site-footer__bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .info-table th,
  .info-table td {
    display: block;
    width: 100%;
  }

  .info-table th {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .info-table td {
    padding-top: 8px;
  }
}

@media (max-width: 430px) {
  .lang-link {
    display: none;
  }

  .hero__visual {
    min-height: 420px;
  }

  .hero__actions .button {
    width: 100%;
  }

  .relationship-diagram__node {
    width: 112px;
    font-size: 0.7rem;
  }

  .relationship-diagram__node--center {
    width: 150px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .site-header,
  .site-footer,
  .hero__visual,
  .hero__actions,
  .cta-panel,
  .filter-bar,
  .animation-toggle,
  .back-to-top {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
    font-size: 11pt;
  }

  .section,
  .section--compact {
    padding-block: 24px;
  }

  a {
    color: #000;
  }

  .card,
  .definition-panel,
  .manifesto,
  .relationship-diagram {
    color: #000;
    background: #fff;
    border: 1px solid #777;
    box-shadow: none;
  }
}