:root {
  --paper: #f4efe3;
  --paper-soft: #fbf8f0;
  --ink: #171916;
  --ink-soft: #55574f;
  --line: #b7ad99;
  --line-dark: #292c27;
  --signal: #df4a16;
  --signal-dark: #b8350e;
  --teal: #2e7772;
  --brass: #aa8647;
  --shadow: 0 18px 50px rgba(42, 34, 18, 0.1);
  --shell: min(1180px, calc(100vw - 48px));
  --font-display:
    "Yu Gothic", "Hiragino Kaku Gothic ProN", "BIZ UDPGothic", sans-serif;
  --font-body: "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
}
body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.2;
  background-image: radial-gradient(
    rgba(44, 40, 31, 0.24) 0.55px,
    transparent 0.7px
  );
  background-size: 5px 5px;
}
a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}
img {
  display: block;
  max-width: 100%;
}
button,
select {
  font: inherit;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 4px;
}
.site-shell {
  width: var(--shell);
  margin-inline: auto;
}
.narrow-shell {
  max-width: 860px;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--ink);
  color: white;
  transform: translateY(-150%);
}
.skip-link:focus {
  transform: none;
}

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--line-dark);
  background: rgba(244, 239, 227, 0.96);
}
.header-inner {
  min-height: 116px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 900;
  letter-spacing: -0.06em;
  text-decoration: none;
}
.brand-logo {
  width: 150px;
  height: auto;
}
.brand-mark {
  width: 12px;
  height: 12px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  box-shadow:
    inset 0 0 0 2px var(--paper),
    inset 0 0 0 4px var(--signal);
}
.global-nav {
  display: flex;
  align-items: center;
  gap: clamp(24px, 4vw, 54px);
  font-size: 0.93rem;
  font-weight: 700;
}
.global-nav a {
  position: relative;
  text-decoration: none;
}
.global-nav a::after {
  position: absolute;
  right: 0;
  bottom: -6px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}
.global-nav a:hover::after {
  transform: scaleX(1);
}
.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
  color: var(--ink);
}
.menu-toggle i,
.menu-toggle i::before,
.menu-toggle i::after {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  content: "";
}
.menu-toggle i {
  position: relative;
}
.menu-toggle i::before {
  position: absolute;
  top: -7px;
}
.menu-toggle i::after {
  position: absolute;
  top: 7px;
}

.hero {
  border-bottom: 1px solid var(--line-dark);
  overflow: hidden;
}
.hero-grid {
  min-height: 650px;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(520px, 1.12fr);
  align-items: stretch;
}
.hero-copy {
  position: relative;
  z-index: 2;
  align-self: center;
  padding: 78px 56px 78px 0;
}
.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--signal);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.hero h1,
.page-hero h1,
.article-header h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.34;
  letter-spacing: -0.055em;
}
.hero h1 {
  font-size: clamp(2.35rem, 3.65vw, 3.55rem);
}
.hero h1 span {
  display: block;
  white-space: nowrap;
}
.hero-lead {
  max-width: 590px;
  margin: 30px 0 0;
  color: #30332e;
  font-size: 1.04rem;
  line-height: 2;
}
.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 28px;
  margin-top: 36px;
}
.button {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 12px 24px;
  border: 1px solid var(--ink);
  border-radius: 3px;
  font-weight: 800;
  text-decoration: none;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}
.button:hover {
  transform: translateY(-3px);
  box-shadow: 5px 5px 0 var(--ink);
}
.button-primary {
  border-color: var(--signal-dark);
  background: var(--signal);
  color: #fffaf1;
}
.button-dark {
  background: var(--ink);
  color: var(--paper-soft);
}
.button-small {
  min-height: 46px;
  padding: 8px 20px;
  background: var(--ink);
  color: white;
  cursor: pointer;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 28px;
  padding-bottom: 5px;
  border-bottom: 1px solid currentColor;
  font-weight: 800;
  text-decoration: none;
}
.text-link span,
.arrow {
  transition: transform 180ms ease;
}
.text-link:hover span,
a:hover .arrow {
  transform: translateX(5px);
}

.hero-visual {
  position: relative;
  min-height: 650px;
  border-left: 1px solid var(--line-dark);
  background: var(--paper);
  overflow: hidden;
}
.hero-visual::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(77, 65, 43, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77, 65, 43, 0.16) 1px, transparent 1px);
  background-size: 30px 30px;
}
.hero-machine {
  position: absolute;
  inset: 24px;
  width: calc(100% - 48px);
  height: calc(100% - 48px);
  object-fit: contain;
  filter: drop-shadow(18px 24px 18px rgba(58, 43, 20, 0.2));
}

.section {
  padding: 96px 0;
  border-bottom: 1px solid var(--line);
}
.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.75fr);
  align-items: end;
  gap: 80px;
  margin-bottom: 44px;
}
.section-heading h2,
.stage-intro h2,
.origin-grid h2,
.contact-band h2,
.three-panels h2,
.operator-card h2,
.contact-detail-grid h2,
.contact-method-card h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 3.3rem);
  line-height: 1.35;
  letter-spacing: -0.045em;
}
.section-heading > p {
  max-width: 560px;
  margin: 0;
  color: var(--ink-soft);
}
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.article-card {
  position: relative;
  min-height: 360px;
  display: flex;
  flex-direction: column;
  padding: 28px;
  border: 1px solid var(--line-dark);
  background: rgba(251, 248, 240, 0.62);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}
.article-card:hover {
  z-index: 2;
  background: var(--paper-soft);
  box-shadow: 9px 9px 0 var(--ink);
  transform: translate(-4px, -4px);
}
.card-hit {
  position: absolute;
  inset: 0;
  z-index: 3;
}
.card-index {
  color: var(--line);
  font-family: monospace;
  font-size: 3.7rem;
  line-height: 1;
}
.card-cover {
  display: flex;
  align-items: center;
  min-height: 96px;
  padding: 18px 20px;
  border-left: 8px solid var(--signal);
  background: var(--ink);
  color: var(--paper-soft);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  line-height: 1.45;
  letter-spacing: 0.01em;
}
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 18px 0 16px;
  font-size: 0.73rem;
}
.stage-badge {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  min-height: 26px;
  padding: 2px 9px;
  border: 1px solid currentColor;
  border-radius: 2px;
  color: var(--signal);
  font-size: 0.7rem;
  font-weight: 800;
}
.stage-concept {
  color: #705f43;
}
.stage-external {
  color: var(--teal);
}
.stage-developing {
  color: #876718;
}
.article-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1.5;
  letter-spacing: -0.025em;
}
.article-card > p {
  display: -webkit-box;
  margin: 14px 0 24px;
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 0.88rem;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}
.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.76rem;
}
.card-foot .arrow {
  color: var(--ink);
  font-size: 1.3rem;
}
.section-more {
  margin-top: 34px;
  text-align: right;
}
.empty-state {
  padding: 54px;
  border: 1px dashed var(--line-dark);
  text-align: center;
}

.category-section {
  background: var(--ink);
  color: var(--paper-soft);
}
.category-section .section-heading > p {
  color: #c7c1b3;
}
.category-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid #777267;
  border-left: 1px solid #777267;
}
.category-card {
  position: relative;
  min-height: 310px;
  padding: 24px;
  border-right: 1px solid #777267;
  border-bottom: 1px solid #777267;
  text-decoration: none;
  transition:
    background 180ms ease,
    color 180ms ease;
}
.category-card:hover {
  background: var(--signal);
  color: white;
}
.category-mark {
  color: #aaa597;
  font: 700 0.74rem monospace;
}
.category-card h3 {
  margin: 72px 0 20px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.45;
}
.category-card p {
  margin: 0;
  color: #c7c1b3;
  font-size: 0.78rem;
}
.category-card:hover p,
.category-card:hover .category-mark {
  color: white;
}
.category-card .arrow {
  position: absolute;
  right: 22px;
  bottom: 18px;
  font-size: 1.35rem;
}

.stage-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(460px, 1.2fr);
  gap: 100px;
  align-items: start;
}
.stage-intro p:last-child {
  max-width: 520px;
  color: var(--ink-soft);
}
.stage-list {
  border-top: 1px solid var(--line-dark);
}
.stage-list a {
  display: grid;
  grid-template-columns: 18px 1fr auto;
  align-items: center;
  gap: 16px;
  min-height: 64px;
  border-bottom: 1px solid var(--line-dark);
  text-decoration: none;
}
.stage-list strong {
  font: 700 1.2rem monospace;
}
.stage-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--signal);
}
.stage-dot-concept {
  background: #806b42;
}
.stage-dot-external {
  background: var(--teal);
}
.stage-dot-developing {
  background: #b28b29;
}
.origin-section {
  background: #e8dfcd;
}
.origin-grid {
  display: grid;
  grid-template-columns: 0.58fr 1.42fr;
  gap: 90px;
  align-items: start;
}
.origin-number {
  color: var(--brass);
  font-family: var(--font-display);
  font-size: clamp(5rem, 13vw, 11rem);
  font-weight: 900;
  line-height: 0.72;
  letter-spacing: -0.12em;
  opacity: 0.4;
}
.origin-grid > div:last-child > p:not(.section-kicker) {
  max-width: 760px;
  margin: 28px 0;
  color: #3f413c;
  font-size: 1.02rem;
}
.contact-band {
  background: var(--signal);
  color: white;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 100px;
  align-items: start;
}
.contact-band .section-kicker {
  color: #541906;
}
.contact-band p {
  margin-top: 0;
}

.page-hero {
  padding: 100px 0 88px;
  border-bottom: 1px solid var(--line-dark);
  background: rgba(251, 248, 240, 0.48);
}
.page-hero h1 {
  font-size: clamp(3.1rem, 9vw, 7.2rem);
}
.page-hero > .site-shell > p:last-child,
.category-title-grid p:last-child {
  max-width: 780px;
  margin: 26px 0 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
}
.compact-hero {
  padding-bottom: 74px;
}
.listing-section {
  min-height: 480px;
}
.filters {
  display: flex;
  align-items: end;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 34px;
  padding: 22px;
  border: 1px solid var(--line-dark);
  background: var(--paper-soft);
}
.filters label {
  display: grid;
  gap: 5px;
  min-width: 210px;
  font-size: 0.74rem;
  font-weight: 800;
}
.filters select {
  min-height: 46px;
  padding: 7px 36px 7px 12px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: white;
  color: var(--ink);
}
.filter-reset {
  padding: 10px;
  font-size: 0.8rem;
}
.result-count {
  margin: 0 0 24px;
  color: var(--ink-soft);
  font-size: 0.8rem;
}
.result-count strong {
  color: var(--ink);
  font: 700 1.5rem monospace;
}
.listing-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}
.pagination a {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-dark);
  text-decoration: none;
}
.pagination a[aria-current="page"] {
  background: var(--ink);
  color: white;
}
.category-title-grid {
  display: grid;
  grid-template-columns: 0.42fr 1.58fr;
  align-items: end;
  gap: 60px;
}
.category-big-mark {
  color: var(--signal);
  font: 800 clamp(7rem, 18vw, 15rem)/0.7 monospace;
  opacity: 0.3;
}

.article-header {
  padding: 72px 0 78px;
  border-bottom: 1px solid var(--line-dark);
  background: var(--paper-soft);
}
.article-header-grid {
  display: grid;
  grid-template-columns: 0.32fr 1.68fr;
  gap: 70px;
  align-items: start;
}
.article-number {
  padding-top: 36px;
  color: var(--line);
  font: 800 clamp(2.7rem, 6vw, 5rem)/0.95 monospace;
}
.breadcrumbs {
  display: flex;
  gap: 10px;
  margin-bottom: 32px;
  color: var(--ink-soft);
  font-size: 0.74rem;
}
.article-labels {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
  font-size: 0.75rem;
}
.article-labels > a {
  font-weight: 800;
}
.article-header h1 {
  max-width: 960px;
  font-size: clamp(2.5rem, 5.2vw, 4.8rem);
}
.article-summary {
  max-width: 800px;
  margin: 28px 0 22px;
  color: var(--ink-soft);
  font-size: 1.06rem;
}
.article-dates {
  display: flex;
  gap: 24px;
  color: var(--ink-soft);
  font-size: 0.75rem;
}
.article-layout {
  display: grid;
  grid-template-columns: minmax(240px, 0.55fr) minmax(0, 1.45fr);
  gap: 90px;
  padding-top: 90px;
  padding-bottom: 100px;
  align-items: start;
}
.experiment-brief {
  position: sticky;
  top: 24px;
  border-top: 4px solid var(--signal);
  border-bottom: 1px solid var(--line-dark);
}
.brief-title {
  margin: 0;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-dark);
  color: var(--signal);
  font: 800 0.7rem monospace;
  letter-spacing: 0.12em;
}
.experiment-brief div {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.experiment-brief div:last-child {
  border-bottom: 0;
}
.experiment-brief span {
  color: var(--ink-soft);
  font-size: 0.68rem;
  font-weight: 800;
}
.experiment-brief p {
  margin: 6px 0 0;
  font-size: 0.85rem;
  line-height: 1.7;
}
.prose {
  max-width: 760px;
  font-size: 1.03rem;
  line-height: 2.05;
}
.prose > :first-child {
  margin-top: 0;
}
.prose p {
  margin: 0 0 1.8em;
}
.prose h2 {
  margin: 2.7em 0 0.8em;
  padding-top: 0.5em;
  border-top: 1px solid var(--line-dark);
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  line-height: 1.55;
  letter-spacing: -0.035em;
}
.prose strong {
  text-decoration: underline;
  text-decoration-color: var(--signal);
  text-decoration-thickness: 0.18em;
  text-underline-offset: 0.1em;
  text-decoration-skip-ink: none;
}
.prose ul {
  margin: 0 0 2em;
  padding: 20px 24px 20px 46px;
  border: 1px solid var(--line);
  background: var(--paper-soft);
}
.prose a {
  color: var(--teal);
}
.article-cover {
  margin: 0;
  padding-top: 56px;
}
.article-cover img {
  display: block;
  width: 100%;
  max-height: 68vh;
  object-fit: cover;
  object-position: center;
  border: 1px solid var(--line-dark);
}
.prose-figure {
  margin: 2.4em 0;
}
.prose-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background: var(--paper-soft);
}
.prose-figure figcaption {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 0.78rem;
  line-height: 1.75;
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 54px;
}
.article-tags span {
  padding: 5px 10px;
  border: 1px solid var(--line);
  font-size: 0.72rem;
}
.article-credit {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 44px;
  padding: 28px 0;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}
.article-credit div {
  display: grid;
  gap: 4px;
}
.article-credit span {
  color: var(--ink-soft);
  font-size: 0.68rem;
}
.article-credit .text-link {
  grid-column: 1 / -1;
  width: fit-content;
}
.related-section {
  background: #e8dfcd;
}

.about-hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  background: var(--ink);
  color: white;
  overflow: hidden;
}
.about-hero .site-shell {
  position: relative;
  z-index: 1;
}
.about-hero h1 {
  font-size: clamp(4rem, 7vw, 6rem);
}
.about-hero .eyebrow {
  color: var(--signal);
}
.about-hero-art {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 68%;
  opacity: 0.16;
  mask-image: linear-gradient(to right, transparent 0%, #000 28%, #000 100%);
  pointer-events: none;
}
.about-hero-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 55% center;
  filter: invert(1) grayscale(1) contrast(1.45);
}
.about-story {
  background: var(--paper-soft);
}
.about-layout {
  display: grid;
  grid-template-columns: 0.55fr 1.45fr;
  gap: 100px;
}
.about-layout aside {
  padding-top: 8px;
}
.about-layout aside span {
  display: block;
  color: var(--signal);
  font: 800 0.7rem monospace;
  letter-spacing: 0.1em;
}
.about-layout aside strong {
  display: block;
  margin-top: 20px;
  font-family: var(--font-display);
  font-size: 1.45rem;
  line-height: 1.7;
}
.prose-large {
  max-width: 820px;
  font-size: 1.08rem;
}
.three-panels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
}
.three-panels > div {
  min-height: 520px;
  padding: 32px;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}
.three-panels h2 {
  font-size: 1.55rem;
}
.three-panels ul,
.contact-detail-grid ul {
  margin: 34px 0 0;
  padding-left: 1.3em;
}
.three-panels li,
.contact-detail-grid li {
  margin-bottom: 12px;
}
.panel-no {
  color: var(--signal);
  font: 800 3rem monospace;
}
.operator-section {
  background: #e8dfcd;
}
.operator-card,
.contact-method-card {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 80px;
  align-items: start;
}
.operator-card p:not(.section-kicker),
.contact-method-card p {
  margin-top: 0;
}

.contact-hero {
  min-height: 500px;
  display: flex;
  align-items: center;
}
.contact-hero h1 {
  font-size: clamp(2.8rem, 7vw, 6rem);
}
.contact-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line-dark);
}
.contact-detail-grid > div {
  min-height: 440px;
  padding: 44px;
}
.contact-detail-grid > div + div {
  border-left: 1px solid var(--line-dark);
}
.contact-detail-grid h2 {
  font-size: 2rem;
}
.decline-panel {
  background: #e7dece;
}
.contact-form-section {
  background: #ece3d2;
}
.contact-form-section h2 {
  margin: 0 0 30px;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  line-height: 1.35;
  letter-spacing: -0.045em;
}
.form-notice {
  margin: 0 0 24px;
  padding: 16px 20px;
  border: 1px solid var(--ink);
  border-radius: 3px;
  font-weight: 700;
}
.form-notice-success {
  border-color: var(--teal);
  background: #e2efec;
  color: #1d4f4b;
}
.form-notice-error {
  border-color: var(--signal-dark);
  background: #fbe3d9;
  color: #8d2a0a;
}
.form-fallback {
  margin: -10px 0 24px;
  font-size: 0.92rem;
}
.contact-form {
  display: grid;
  gap: 26px;
}
.form-field {
  display: grid;
  gap: 8px;
}
.form-field label {
  font-weight: 800;
}
.form-required {
  margin-left: 10px;
  padding: 2px 8px;
  border-radius: 2px;
  background: var(--signal);
  color: #fffaf1;
  font: 800 0.68rem/1.6 var(--font-body);
  letter-spacing: 0.08em;
  vertical-align: 0.1em;
}
.form-field input,
.form-field textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid var(--ink);
  border-radius: 3px;
  background: var(--paper-soft);
  color: var(--ink);
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.8;
}
.form-field input {
  min-height: 54px;
}
.form-field textarea {
  resize: vertical;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: 2px solid var(--signal);
  outline-offset: 1px;
}
.form-field.has-error input,
.form-field.has-error textarea {
  border-color: var(--signal-dark);
  background: #fdf1ec;
}
.form-error {
  margin: 0;
  color: #8d2a0a;
  font-size: 0.86rem;
  font-weight: 700;
}
.form-help {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}
.contact-form .button {
  width: fit-content;
  cursor: pointer;
}
.form-trap {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.form-privacy {
  margin-top: 46px;
  padding: 26px 28px;
  border: 1px solid var(--line-dark);
  background: var(--paper-soft);
}
.form-privacy h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 1.1rem;
}
.form-privacy ul {
  margin: 0;
  padding-left: 1.3em;
  color: var(--ink-soft);
  font-size: 0.86rem;
}
.form-privacy li {
  margin-bottom: 6px;
}
.contact-method {
  background: var(--ink);
  color: white;
}
.contact-method-card .section-kicker {
  color: var(--signal);
}
.contact-method-card .button {
  width: fit-content;
  margin-top: 18px;
}
.not-found {
  min-height: 72vh;
  display: grid;
  place-items: center;
  padding: 90px 0;
}
.not-found .site-shell {
  max-width: 880px;
}
.error-code {
  margin: 0;
  color: var(--line);
  font: 900 clamp(7rem, 24vw, 18rem)/0.7 monospace;
}
.not-found h1 {
  max-width: 760px;
  margin: 30px 0 20px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.4;
}

.site-footer {
  padding: 70px 0 24px;
  background: var(--ink);
  color: var(--paper-soft);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.5fr 0.8fr;
  gap: 70px;
  align-items: start;
}
.footer-brand {
  font-size: 1.65rem;
}
.footer-grid p {
  color: #bdb7aa;
  font-size: 0.8rem;
}
.footer-grid nav {
  display: grid;
  gap: 8px;
}
.footer-grid nav a {
  text-decoration: none;
}
.operator a {
  color: white;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid #55574f;
  color: #999487;
  font: 700 0.67rem monospace;
  letter-spacing: 0.08em;
}

@media (max-width: 1020px) {
  :root {
    --shell: min(100% - 36px, 920px);
  }
  .hero-grid {
    min-height: 0;
    grid-template-columns: 1fr;
  }
  .hero-copy {
    padding: 68px 0 52px;
  }
  .hero-visual {
    min-height: 560px;
    border-top: 1px solid var(--line-dark);
    border-left: 0;
  }
  .article-grid,
  .listing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .category-card:last-child {
    grid-column: 1 / -1;
    min-height: 220px;
  }
  .stage-layout,
  .origin-grid,
  .contact-grid {
    gap: 54px;
  }
  .article-layout {
    grid-template-columns: 1fr;
    gap: 50px;
  }
  .experiment-brief {
    position: static;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border: 1px solid var(--line-dark);
  }
  .brief-title {
    grid-column: 1 / -1;
    padding-inline: 18px;
  }
  .experiment-brief div {
    padding: 18px;
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }
  .experiment-brief div:last-child {
    border-right: 0;
  }
  .about-layout {
    grid-template-columns: 1fr;
    gap: 46px;
  }
  .about-layout aside {
    max-width: 540px;
  }
  .three-panels {
    grid-template-columns: 1fr;
  }
  .three-panels > div {
    min-height: 0;
  }
}

@media (max-width: 720px) {
  :root {
    --shell: calc(100% - 28px);
  }
  body {
    font-size: 15px;
  }
  .header-inner {
    min-height: 78px;
  }
  .brand {
    font-size: 1.45rem;
  }
  .brand-logo {
    width: 100px;
  }
  .menu-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    cursor: pointer;
  }
  .menu-toggle span {
    font-size: 0.7rem;
    font-weight: 800;
  }
  .global-nav {
    position: absolute;
    top: 78px;
    right: 0;
    left: 0;
    display: none;
    padding: 12px 14px 22px;
    border-bottom: 1px solid var(--line-dark);
    background: var(--paper-soft);
    box-shadow: var(--shadow);
  }
  .global-nav[data-open="true"] {
    display: grid;
  }
  .global-nav a {
    min-height: 48px;
    display: flex;
    align-items: center;
    padding: 0 10px;
    border-bottom: 1px solid var(--line);
  }
  .hero-copy {
    padding: 48px 0 40px;
  }
  .hero h1 {
    font-size: clamp(2rem, 9vw, 2.35rem);
  }
  .hero-lead {
    margin-top: 22px;
    font-size: 0.94rem;
    line-height: 1.9;
  }
  .hero-actions {
    align-items: stretch;
    gap: 18px;
    margin-top: 28px;
  }
  .button-primary {
    width: 100%;
  }
  .text-link {
    width: fit-content;
  }
  .hero-visual {
    min-height: 390px;
  }
  .hero-machine {
    inset: 14px;
    width: calc(100% - 28px);
    height: calc(100% - 28px);
  }
  .section {
    padding: 66px 0;
  }
  .section-heading {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 30px;
  }
  .section-heading h2,
  .stage-intro h2,
  .origin-grid h2,
  .contact-band h2 {
    font-size: 2rem;
  }
  .section-heading > p {
    font-size: 0.9rem;
  }
  .article-grid,
  .listing-grid {
    grid-template-columns: 1fr;
  }
  .article-card {
    min-height: 310px;
    padding: 22px;
  }
  .article-card:hover {
    box-shadow: 5px 5px 0 var(--ink);
  }
  .card-cover {
    min-height: 80px;
    padding: 14px 16px;
    font-size: 1.25rem;
  }
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .category-card {
    min-height: 230px;
    padding: 18px;
  }
  .category-card h3 {
    margin-top: 40px;
    font-size: 1rem;
  }
  .category-card p {
    display: none;
  }
  .category-card:last-child {
    min-height: 160px;
  }
  .stage-layout,
  .origin-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .stage-list a {
    min-height: 58px;
  }
  .origin-number {
    font-size: 7rem;
  }
  .contact-band .button {
    width: 100%;
  }
  .page-hero {
    padding: 68px 0 58px;
  }
  .page-hero h1 {
    font-size: clamp(2.8rem, 15vw, 4.7rem);
  }
  .about-hero {
    min-height: 430px;
  }
  .about-hero h1,
  .contact-hero h1 {
    font-size: 2.9rem;
  }
  .about-hero-art {
    display: none;
  }
  .filters {
    display: grid;
    grid-template-columns: 1fr;
  }
  .filters label {
    min-width: 0;
  }
  .filters .button-small {
    width: 100%;
  }
  .category-title-grid,
  .article-header-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .category-big-mark {
    font-size: 7rem;
  }
  .article-number {
    padding-top: 0;
    font-size: 2.6rem;
  }
  .article-header {
    padding: 48px 0 54px;
  }
  .article-header h1 {
    font-size: 2.4rem;
  }
  .article-summary {
    font-size: 0.96rem;
  }
  .article-layout {
    padding-top: 56px;
    padding-bottom: 70px;
  }
  .experiment-brief {
    grid-template-columns: 1fr;
  }
  .experiment-brief div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .prose {
    font-size: 0.98rem;
    line-height: 1.95;
  }
  .article-cover {
    padding-top: 32px;
  }
  .prose-figure {
    margin: 1.9em 0;
  }
  .prose h2 {
    font-size: 1.65rem;
  }
  .article-credit {
    grid-template-columns: 1fr;
  }
  .article-credit .text-link {
    grid-column: auto;
  }
  .about-layout {
    gap: 34px;
  }
  .prose-large {
    font-size: 0.98rem;
  }
  .three-panels > div {
    padding: 24px;
  }
  .operator-card,
  .contact-method-card {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .contact-form-section h2 {
    font-size: 1.85rem;
  }
  .contact-form {
    gap: 20px;
  }
  .contact-form .button {
    width: 100%;
  }
  .form-privacy {
    padding: 20px;
  }
  .contact-detail-grid {
    grid-template-columns: 1fr;
  }
  .contact-detail-grid > div {
    min-height: 0;
    padding: 28px;
  }
  .contact-detail-grid > div + div {
    border-top: 1px solid var(--line-dark);
    border-left: 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-grid nav {
    grid-template-columns: repeat(3, auto);
    gap: 14px;
    font-size: 0.8rem;
  }
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}