@font-face {
  font-family: "Exchange Serif SC";
  src: url("/exchange-assets/fonts/noto-serif-sc-500.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: "Exchange Serif JP";
  src: url("/exchange-assets/fonts/noto-serif-jp-500.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: "Exchange Display";
  src: url("/exchange-assets/fonts/cormorant-garamond-500.woff2")
    format("woff2");
  font-weight: 500;
  font-display: swap;
}
.exchange {
  --paper: #f8f6f0;
  --display: "Exchange Serif SC", "Songti SC", serif;
  --latin: "Exchange Display", Georgia, serif;
  --ink: #242a28;
  --green: #173d35;
  --sand: #e8d8c4;
  --line: #d7d8cf;
  --muted: #59635c;
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font:
    17px/1.85 -apple-system,
    BlinkMacSystemFont,
    "Hiragino Kaku Gothic ProN",
    "Yu Gothic",
    "Microsoft YaHei",
    sans-serif;
  -webkit-font-smoothing: antialiased;
}
.exchange * {
  box-sizing: border-box;
}
.exchange a {
  color: inherit;
  text-underline-offset: 5px;
}
.exchange a:hover {
  opacity: 0.78;
}
.exchange :focus-visible {
  outline: 3px solid #a65432;
  outline-offset: 6px;
}
.exchange h1,
.exchange h2,
.exchange h3,
.exchange h4,
.exchange p {
  margin: 0;
}
.exchange h1,
.exchange h2,
.exchange h3,
.exchange .footer-brand {
  font-family: var(--display);
  letter-spacing: 0.025em;
  font-synthesis: none;
  font-weight: 500;
  line-height: 1.5;
}
.exchange header {
  max-width: 1440px;
  margin: auto;
  padding: 24px 48px;
  display: flex;
  align-items: center;
  gap: 32px;
  border-bottom: 1px solid var(--line);
}
.exchange .brand {
  flex: 1;
  white-space: nowrap;
}
.exchange .brand a {
  text-decoration: none;
}
.exchange .brand-name {
  font-family: var(--latin);
  font-size: 27px;
  font-weight: 500;
  letter-spacing: 2px;
}
.exchange .brand-name > span {
  display: block;
  font-family: -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 10px;
  letter-spacing: 4.5px;
}
.exchange .brand-sub {
  display: block;
  font-size: 11px;
  letter-spacing: 1px;
  margin-top: 4px;
}
.exchange nav {
  display: flex;
  gap: 24px;
  font-size: 13px;
}
.exchange nav a {
  text-decoration: none;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.exchange nav .active {
  border-bottom: 1px solid var(--green);
}
.exchange .languages {
  display: flex;
  gap: 12px;
  font-size: 12px;
}
.exchange .languages a {
  min-height: 44px;
  display: flex;
  align-items: center;
  text-decoration: none;
}
.exchange .languages [aria-current] {
  text-decoration: underline;
}
.exchange main,
.exchange footer {
  max-width: 1296px;
  margin: auto;
  padding: 0 48px;
}
.exchange .mast {
  padding: 44px 0 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: end;
  gap: 40px;
}
.exchange .small-label {
  font-size: 11px;
  letter-spacing: 2px;
  font-weight: 600;
  display: block;
}
.exchange .mast h1 {
  font-size: 29px;
  margin: 0 0 14px;
  line-height: 1.7;
  text-wrap: balance;
}
.exchange .mast-intro > p {
  color: var(--muted);
  font-size: 14px;
  margin-top: 8px;
}
.exchange .portals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.exchange .portal {
  position: relative;
  padding: 28px 40px 42px;
  overflow: hidden;
  min-height: 460px;
}
.exchange .china {
  background: var(--green);
  color: #f8f6f0;
}
.exchange .japan {
  background: var(--sand);
  color: var(--ink);
}
.exchange .portal-top {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  letter-spacing: 2px;
  padding-bottom: 18px;
  border-bottom: 1px solid;
  border-color: color-mix(in srgb, currentColor 22%, transparent);
}
.exchange .portal-content {
  position: relative;
  z-index: 1;
  margin-top: 40px;
}
.exchange .portal h2 {
  font-size: clamp(30px, 3.3vw, 48px);
  letter-spacing: 0.02em;
  line-height: 1.55;
}
.exchange .portal p {
  font-size: 16px;
  line-height: 2;
  margin: 22px 0 28px;
  max-width: 440px;
}
.exchange .portal-link {
  display: inline-block;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding: 5px 0 10px;
  min-height: 44px;
  font-size: 15px;
}
.exchange .portal-stamp {
  position: absolute;
  right: 32px;
  bottom: 26px;
  font: 500 24px/1.5 var(--display);
  padding: 8px 10px;
  border: 1px solid currentColor;
  opacity: 0.35;
  pointer-events: none;
}
.exchange .portal::before {
  content: "";
  position: absolute;
  width: 290px;
  height: 420px;
  border: 1px solid currentColor;
  border-radius: 50% 50% 0 0;
  transform: rotate(-26deg);
  right: -165px;
  bottom: -140px;
  opacity: 0.1;
  pointer-events: none;
}
.exchange .seminar {
  display: grid;
  grid-template-columns: 160px 1fr auto;
  gap: 24px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 34px 0;
}
.exchange .seminar h2 {
  font-size: 25px;
}
.exchange .seminar p {
  font-size: 14px;
  color: var(--muted);
}
.exchange .text-link {
  display: inline-block;
  padding: 10px 0;
  font-size: 15px;
  min-height: 44px;
}
.exchange .section {
  padding: 100px 0;
  border-bottom: 1px solid var(--line);
}
.exchange .section-label {
  display: flex;
  align-items: baseline;
  gap: 22px;
  margin-bottom: 36px;
}
.exchange .section-label > span {
  font-size: 12px;
  color: var(--muted);
  font-family: var(--latin);
}
.exchange .section-label h2 {
  font-size: 25px;
}
.exchange .empty {
  border-left: 1px solid #9eac9b;
  padding: 10px 0 10px 36px;
  max-width: 830px;
  margin-left: 40px;
}
.exchange .empty .small-label {
  color: var(--muted);
}
.exchange .empty h3 {
  font-size: 34px;
  margin: 20px 0;
}
.exchange .empty p {
  max-width: 680px;
}
.exchange .muted {
  font-size: 14px;
  color: var(--muted);
  margin-top: 18px;
}
.exchange .intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
.exchange .intro-grid h3 {
  font-size: 36px;
  max-width: 470px;
}
.exchange .intro-grid p {
  color: var(--muted);
}
.exchange .steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin-top: 52px;
}
.exchange .steps > div {
  border-top: 1px solid var(--line);
  padding-top: 20px;
}
.exchange .step-number {
  font-family: var(--latin);
  font-size: 28px;
  color: #617362;
}
.exchange .steps h4 {
  font-size: 18px;
  margin: 14px 0 10px;
  font-weight: 500;
}
.exchange .steps p {
  font-size: 15px;
  color: var(--muted);
}
.exchange .group {
  padding: 72px 64px;
  margin: 80px 0;
  background: #eaede5;
}
.exchange .group h2 {
  font-size: 34px;
  margin: 18px 0;
}
.exchange .group p {
  max-width: 760px;
}
.exchange .button {
  display: inline-block;
  padding: 13px 22px;
  background: var(--green);
  color: var(--paper);
  text-decoration: none;
  font-size: 15px;
  margin-top: 28px;
  min-height: 48px;
}
.exchange footer {
  padding-top: 48px;
  padding-bottom: 28px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  font-size: 13px;
}
.exchange .footer-brand {
  font-size: 21px;
  letter-spacing: 2px;
}
.exchange .footer-brand span {
  font-size: 15px;
}
.exchange footer small {
  display: block;
  margin-top: 16px;
  color: var(--muted);
}
.exchange .footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: flex-end;
  align-content: start;
}
.exchange .footer-links a {
  padding: 8px 0;
}
.exchange .footer-bottom {
  grid-column: 1/-1;
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 24px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 1px;
}
.exchange .category-hero {
  padding: 60px;
  margin-top: 32px;
}
.exchange .category-hero.seminars {
  background: #eaede5;
}
.exchange .category-name {
  margin-top: 36px;
  font-size: 14px;
}
.exchange .category-hero h1 {
  font-size: 44px;
  max-width: 800px;
  margin: 10px 0 24px;
}
.exchange .category-hero > p:last-of-type {
  max-width: 740px;
}
.exchange .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.exchange .tags span {
  border: 1px solid currentColor;
  padding: 3px 12px;
  font-size: 13px;
}
.exchange .contact-hero,
.exchange .detail-hero {
  padding: 80px 0 52px;
  max-width: 950px;
}
.exchange .contact-hero h1,
.exchange .detail-hero h1 {
  font-size: 44px;
  margin: 20px 0;
}
.exchange .contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
.exchange .channels {
  padding: 38px;
  background: #eaede5;
  overflow-wrap: anywhere;
}
.exchange .channels h2 {
  font-size: 22px;
  margin: 18px 0;
}
.exchange .channels hr {
  border: 0;
  border-top: 1px solid #bdc6b7;
  margin: 32px 0;
}
.exchange .contact-info {
  padding-top: 30px;
}
.exchange .contact-info h2 {
  font-size: 24px;
}
.exchange ul {
  padding-left: 24px;
}
.exchange li {
  padding: 7px 0;
}
.exchange .notice {
  padding: 24px;
  border: 1px solid var(--line);
  margin-top: 32px;
  font-size: 15px;
}
.exchange .legal {
  max-width: 850px;
  margin-bottom: 60px;
}
.exchange .legal h2 {
  font-size: 25px;
  margin: 28px 0 16px;
}
.exchange .legal p {
  margin-bottom: 16px;
}
.exchange .projects {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.exchange .project {
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.exchange .project h3 {
  font-size: 26px;
  margin: 16px 0;
}
.exchange .detail {
  padding-bottom: 80px;
}
.exchange .detail > section {
  border-top: 1px solid var(--line);
  padding: 48px 0;
}
.exchange .detail-body {
  max-width: 840px;
  margin-left: 42px;
}
.exchange .detail-body p {
  margin: 12px 0;
}
.exchange .detail-body h3 {
  font-size: 24px;
}
.exchange .session {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.exchange .badge {
  font-size: 13px;
  border: 1px solid var(--line);
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 20px;
}
.exchange dl {
  display: grid;
  grid-template-columns: 150px 1fr;
  font-size: 15px;
}
.exchange dd {
  margin: 0;
}
.exchange .preview-note {
  text-align: center;
  background: #f1e5ce;
  padding: 8px;
  font-size: 12px;
}
.exchange .preview-note a {
  margin-left: 12px;
}
.exchange .skip {
  position: absolute;
  top: -100px;
  left: 10px;
  z-index: 9;
  padding: 15px;
  background: white;
}
.exchange .skip:focus {
  top: 10px;
}
@media (max-width: 1000px) {
  .exchange header {
    flex-wrap: wrap;
    gap: 12px 24px;
    padding: 22px 28px;
  }
  .exchange nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }
  .exchange main,
  .exchange footer {
    padding-left: 28px;
    padding-right: 28px;
  }
  .exchange .portal {
    padding: 24px;
    min-height: 430px;
  }
  .exchange .portal h2 {
    font-size: 33px;
  }
  .exchange .desktop {
    display: none;
  }
  .exchange .seminar {
    grid-template-columns: 1fr auto;
  }
  .exchange .seminar > .small-label {
    grid-column: 1/-1;
  }
  .exchange .intro-grid,
  .exchange .contact-grid {
    gap: 36px;
  }
  .exchange .steps {
    gap: 28px;
  }
  .exchange .group {
    padding: 48px 36px;
  }
  .exchange .projects {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 600px) {
  .exchange {
    font-size: 16px;
  }
  .exchange header {
    padding: 18px 20px 10px;
  }
  .exchange .brand-name {
    font-size: 18px;
  }
  .exchange .brand-name > span {
    font-size: 11px;
    letter-spacing: 4px;
  }
  .exchange .brand-sub {
    font-size: 10px;
  }
  .exchange .languages {
    font-size: 12px;
    gap: 14px;
  }
  .exchange nav {
    flex-wrap: wrap;
    justify-content: flex-start;
    column-gap: 20px;
    row-gap: 0;
    font-size: 12px;
  }
  .exchange nav a {
    min-height: 44px;
  }
  .exchange main,
  .exchange footer {
    padding-left: 20px;
    padding-right: 20px;
  }
  .exchange .mast {
    display: block;
    padding: 24px 0 26px;
  }
  .exchange .mast .small-label {
    font-size: 9px;
    letter-spacing: 1.3px;
  }
  .exchange .mast h1 {
    font-size: 24px;
  }
  .exchange .mast-intro > p {
    font-size: 12px;
  }
  .exchange .portals {
    grid-template-columns: 1fr;
  }
  .exchange .portal {
    min-height: 0;
    padding: 20px 24px 26px;
  }
  .exchange .portal-top {
    font-size: 10px;
  }
  .exchange .portal-content {
    margin-top: 20px;
  }
  .exchange .portal h2 {
    font-size: 30px;
    line-height: 1.45;
  }
  .exchange .portal p {
    font-size: 15px;
    line-height: 1.8;
    margin: 14px 0 12px;
  }
  .exchange .portal-link {
    font-size: 14px;
    padding: 5px 0;
  }
  .exchange .portal-stamp {
    font-size: 21px;
    right: 22px;
    bottom: 23px;
  }
  .exchange .seminar {
    display: block;
    padding: 28px 4px;
  }
  .exchange .seminar h2 {
    font-size: 24px;
    margin-top: 12px;
  }
  .exchange .seminar p {
    margin: 8px 0;
  }
  .exchange .section {
    padding: 52px 0;
  }
  .exchange .section-label {
    gap: 14px;
    margin-bottom: 28px;
  }
  .exchange .section-label h2 {
    font-size: 23px;
  }
  .exchange .empty {
    margin-left: 0;
    padding-left: 20px;
  }
  .exchange .empty h3 {
    font-size: 26px;
  }
  .exchange .intro-grid,
  .exchange .steps,
  .exchange .contact-grid,
  .exchange .projects {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .exchange .intro-grid h3 {
    font-size: 29px;
  }
  .exchange .steps {
    margin-top: 32px;
  }
  .exchange .steps > div {
    padding-top: 18px;
  }
  .exchange .steps h4 {
    margin: 8px 0;
  }
  .exchange .group {
    padding: 34px 24px;
    margin: 48px 0;
  }
  .exchange .group h2 {
    font-size: 27px;
  }
  .exchange .small-label {
    font-size: 10px;
  }
  .exchange footer {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .exchange .footer-links {
    justify-content: flex-start;
    gap: 4px 24px;
  }
  .exchange .footer-bottom {
    display: block;
  }
  .exchange .footer-bottom span {
    display: block;
    margin-top: 8px;
  }
  .exchange .category-hero {
    padding: 32px 24px;
    margin-top: 24px;
  }
  .exchange .category-name {
    margin-top: 22px;
  }
  .exchange .category-hero h1 {
    font-size: 32px;
  }
  .exchange .contact-hero,
  .exchange .detail-hero {
    padding: 44px 0 32px;
  }
  .exchange .contact-hero h1,
  .exchange .detail-hero h1 {
    font-size: 32px;
  }
  .exchange .channels {
    padding: 26px;
  }
  .exchange .contact-info {
    padding-top: 0;
  }
  .exchange .detail-body {
    margin-left: 0;
  }
  .exchange dl {
    grid-template-columns: 110px 1fr;
  }
  .exchange .detail > section {
    padding: 32px 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .exchange * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

.exchange .contact-hero h1 {
  text-wrap: balance;
}

/* Language-specific glyph forms, including the bilingual entry panels. */
.exchange:lang(ja),
.exchange :lang(ja) {
  --display: "Exchange Serif JP", "Yu Mincho", serif;
}
.exchange:lang(zh),
.exchange :lang(zh) {
  --display: "Exchange Serif SC", "Songti SC", serif;
}
.exchange .mast .mast-wordmark {
  font: 500 clamp(72px, 8.6vw, 124px)/1.05 var(--latin);
  letter-spacing: -0.045em;
  color: var(--green);
  margin: 5px 0 0;
}
.exchange .mast-wordmark span {
  color: #9e6950;
}
.exchange .mast-intro {
  padding: 0 0 14px 38px;
  border-left: 1px solid var(--line);
}
.exchange .portal-link {
  transition: padding 0.2s ease;
}
.exchange .portal-link:hover {
  padding-left: 6px;
  opacity: 1;
}
.exchange .group {
  border-top: 1px solid #b9c3b0;
  position: relative;
}
.exchange .group::after {
  content: "↗";
  position: absolute;
  right: 48px;
  top: 26px;
  font: 500 58px/1 var(--latin);
  color: #788976;
}
@media (max-width: 1000px) {
  .exchange .mast {
    gap: 24px;
  }
  .exchange .mast h1 {
    font-size: 25px;
  }
  .exchange .mast-intro {
    padding-left: 24px;
  }
  .exchange .portal h2 {
    font-size: 34px;
  }
}
@media (max-width: 600px) {
  .exchange .mast .mast-wordmark {
    font-size: 70px;
    margin-bottom: 18px;
  }
  .exchange .mast-intro {
    padding: 0;
    border: 0;
  }
  .exchange .mast h1 {
    font-size: 22px;
    margin-bottom: 8px;
  }
  .exchange .portals {
    gap: 12px;
  }
  .exchange .portal h2 {
    font-size: 29px;
  }
  .exchange .portal-top {
    padding-bottom: 12px;
  }
  .exchange .group::after {
    font-size: 36px;
    top: 24px;
    right: 20px;
  }
  .exchange .group .small-label {
    max-width: 220px;
  }
}

/* Real bold font files, rather than synthetic thickening of the regular face. */
@font-face {
  font-family: "Exchange Serif SC";
  src: url("/exchange-assets/fonts/noto-serif-sc-700.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: "Exchange Serif JP";
  src: url("/exchange-assets/fonts/noto-serif-jp-700.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}
.exchange h1,
.exchange h2,
.exchange .empty h3,
.exchange .intro-grid h3,
.exchange .steps h4,
.exchange .project h3,
.exchange .detail-body h3 {
  font-weight: 700;
}
.exchange .reading-bold,
.exchange .reading-key {
  font-weight: 700;
}
.exchange .reading-key {
  color: inherit;
  background: linear-gradient(
      transparent 81%,
      rgba(126, 148, 110, 0.3) 81%,
      rgba(126, 148, 110, 0.3) 95%,
      transparent 95%
    )
    left bottom / 100% 100% no-repeat;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  padding-bottom: 0.08em;
}
.exchange .china .reading-key {
  background-image: linear-gradient(
    transparent 81%,
    rgba(216, 226, 192, 0.45) 81%,
    rgba(216, 226, 192, 0.45) 95%,
    transparent 95%
  );
}
.exchange .empty > .muted {
  margin-top: 26px;
  padding: 18px 22px;
  border-left: 2px solid #8a9c7f;
  background: #eef0e8;
  color: var(--ink);
  font-size: 16px;
}
.exchange .reading-paragraphs {
  max-width: 44em;
}
.exchange .reading-paragraphs p {
  margin: 0 0 22px;
  line-height: 2;
}
.exchange .reading-paragraphs p:last-child {
  margin-bottom: 0;
}
.exchange .button {
  transition:
    transform 0.2s ease,
    background-color 0.2s ease;
}
.exchange .button:hover,
.exchange .button:focus-visible {
  transform: translateY(-2px);
  background-color: #285347;
  opacity: 1;
}
.exchange nav a,
.exchange .text-link {
  transition: color 0.2s ease;
}
.exchange .section-label {
  scroll-margin-top: 32px;
}
@media (max-width: 600px) {
  .exchange .empty > .muted {
    padding: 16px;
    font-size: 15px;
  }
  .exchange .portal p {
    line-height: 1.95;
  }
}
@media (prefers-reduced-motion: reduce) {
  .exchange .button:hover,
  .exchange .button:focus-visible {
    transform: none;
  }
}
.exchange .empty > p:first-of-type {
  text-wrap: balance;
}
.exchange :is(h1, h2, h3) {
  text-wrap: balance;
}

/* Shared concept imagery and rounded visual language. */
.exchange {
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 8px;
}
.exchange .portal,
.exchange .category-hero,
.exchange .group,
.exchange .channels {
  border-radius: var(--radius-lg);
}
.exchange .button,
.exchange .notice,
.exchange .empty > .muted {
  border-radius: var(--radius-sm);
}
.exchange .badge,
.exchange .tags span,
.exchange .portal-stamp {
  border-radius: 6px;
}
.exchange .mast {
  position: relative;
  min-height: 360px;
  margin: 28px 0;
  padding: 48px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
  isolation: isolate;
}
.exchange .mast-scene {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(
      90deg,
      rgba(248, 246, 240, 0.96) 0%,
      rgba(248, 246, 240, 0.88) 34%,
      rgba(248, 246, 240, 0.3) 72%,
      rgba(248, 246, 240, 0.15)
    ),
    url("/exchange-assets/images/courtyard-v1.jpg") center 58% / cover;
}
.exchange .mast-intro {
  background: rgba(248, 246, 240, 0.87);
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-md);
}
.exchange .portal.china {
  background:
    linear-gradient(
      90deg,
      rgba(23, 61, 53, 0.98),
      rgba(23, 61, 53, 0.89) 55%,
      rgba(23, 61, 53, 0.7)
    ),
    url("/exchange-assets/images/courtyard-v1.jpg") 72% center / cover;
}
.exchange .portal.japan {
  background:
    linear-gradient(
      90deg,
      rgba(232, 216, 196, 0.98),
      rgba(232, 216, 196, 0.9) 55%,
      rgba(232, 216, 196, 0.62)
    ),
    url("/exchange-assets/images/study-v1.jpg") 70% center / cover;
}
.exchange .portal::before {
  display: none;
}
.exchange .seminar {
  border: 1px solid #d7d8cf;
  border-radius: var(--radius-md);
  padding: 30px;
  margin-top: 20px;
  background:
    linear-gradient(
      90deg,
      rgba(248, 246, 240, 0.98),
      rgba(248, 246, 240, 0.94) 60%,
      rgba(248, 246, 240, 0.55)
    ),
    url("/exchange-assets/images/study-v1.jpg") center 62% / cover;
}
.exchange .about {
  position: relative;
}
.exchange .group {
  background:
    linear-gradient(
      90deg,
      rgba(234, 237, 229, 0.98),
      rgba(234, 237, 229, 0.94) 48%,
      rgba(234, 237, 229, 0.45)
    ),
    url("/exchange-assets/images/study-v1.jpg") center / cover;
}
.exchange .group > p,
.exchange .group > h2 {
  max-width: 72%;
}
.exchange .category-hero.china {
  background:
    linear-gradient(
      90deg,
      rgba(23, 61, 53, 0.97),
      rgba(23, 61, 53, 0.82) 66%,
      rgba(23, 61, 53, 0.6)
    ),
    url("/exchange-assets/images/courtyard-v1.jpg") center / cover;
}
.exchange .category-hero.japan {
  background:
    linear-gradient(
      90deg,
      rgba(232, 216, 196, 0.98),
      rgba(232, 216, 196, 0.88) 66%,
      rgba(232, 216, 196, 0.45)
    ),
    url("/exchange-assets/images/study-v1.jpg") center / cover;
}
.exchange .category-hero.seminars,
.exchange .channels {
  background:
    linear-gradient(
      90deg,
      rgba(234, 237, 229, 0.98),
      rgba(234, 237, 229, 0.89)
    ),
    url("/exchange-assets/images/study-v1.jpg") center / cover;
}
.exchange:lang(en) {
  --display: Georgia, "Times New Roman", serif;
}
.exchange :lang(en) {
  --display: Georgia, "Times New Roman", serif;
}
.exchange:lang(en) .portal h2 {
  font-size: 43px;
  line-height: 1.25;
  letter-spacing: -0.02em;
}
.exchange:lang(en) .portal {
  min-height: 475px;
}
.exchange:lang(en) .portal-content {
  margin-top: 32px;
}
.exchange:lang(en) nav {
  gap: 18px;
}
.exchange .languages {
  flex-shrink: 0;
}
@media (max-width: 1100px) {
  .exchange header {
    flex-wrap: wrap;
  }
  .exchange nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }
  .exchange .mast {
    padding: 32px;
    gap: 24px;
  }
  .exchange .mast .mast-wordmark {
    font-size: 86px;
  }
  .exchange:lang(en) .portal h2 {
    font-size: 34px;
  }
  .exchange .seminar {
    grid-template-columns: 1fr auto;
  }
  .exchange .seminar > .small-label {
    grid-column: 1/-1;
  }
}
@media (max-width: 600px) {
  .exchange {
    --radius-lg: 16px;
    --radius-md: 12px;
  }
  .exchange .mast {
    min-height: 0;
    padding: 26px 22px;
    margin: 20px 0;
  }
  .exchange .mast .mast-wordmark {
    font-size: 68px;
  }
  .exchange .mast-scene {
    background-position: 62% center;
  }
  .exchange .mast-intro {
    padding: 14px 16px;
  }
  .exchange .mast h1 {
    font-size: 21px;
  }
  .exchange .mast .small-label {
    font-size: 8px;
    letter-spacing: 1px;
  }
  .exchange .seminar {
    display: block;
    padding: 24px;
  }
  .exchange .group > p,
  .exchange .group > h2 {
    max-width: 100%;
  }
  .exchange .group {
    background-image:
      linear-gradient(rgba(234, 237, 229, 0.94), rgba(234, 237, 229, 0.92)),
      url("/exchange-assets/images/study-v1.jpg");
  }
  .exchange:lang(en) .portal {
    min-height: 0;
  }
  .exchange:lang(en) .portal h2 {
    font-size: 32px;
  }
  .exchange:lang(en) .portal-content {
    margin-top: 22px;
  }
  .exchange header {
    gap: 10px 14px;
  }
  .exchange .languages {
    gap: 10px;
    font-size: 11px;
  }
  .exchange nav {
    justify-content: flex-start;
  }
}
.exchange .portal {
  display: flex;
  flex-direction: column;
}
.exchange .portal-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.exchange .portal-content h2 {
  align-self: stretch;
}
.exchange .portal .portal-link {
  margin-top: auto;
}

/* Two clear header levels: identity/language, then programme navigation. */
.exchange header.site-header {
  max-width: 1296px;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas: "brand languages" "navigation navigation";
  align-items: center;
  gap: 22px 40px;
  padding: 26px 48px 0;
  border-bottom: 0;
}
.exchange .site-header .brand {
  grid-area: brand;
}
.exchange .site-header .languages {
  grid-area: languages;
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  border: 1px solid #d7d8cf;
  border-radius: 999px;
  background: #eeeee6;
  font-size: 12px;
}
.exchange .site-header .languages a {
  min-height: 36px;
  padding: 4px 15px;
  justify-content: center;
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
}
.exchange .site-header .languages [aria-current] {
  background: var(--green);
  color: var(--paper);
  font-weight: 600;
}
.exchange .site-header nav {
  grid-area: navigation;
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: flex-start;
  gap: 32px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
  font-size: 14px;
}
.exchange .site-header nav a {
  min-height: 44px;
  white-space: nowrap;
  padding: 6px 0;
}
.exchange .site-header nav a:nth-last-child(2) {
  margin-left: auto;
  color: var(--muted);
}
.exchange .site-header nav a:last-child {
  padding: 8px 22px;
  border-radius: 8px;
  border: 1px solid #afbcad;
  background: #e9ede3;
  color: var(--green);
  font-weight: 600;
  justify-content: center;
}
@media (max-width: 1000px) {
  .exchange header.site-header {
    padding: 24px 28px 0;
    gap: 20px 28px;
  }
  .exchange .site-header nav {
    gap: 22px;
    font-size: 13px;
  }
}
@media (max-width: 600px) {
  .exchange header.site-header {
    padding: 20px 20px 0;
    gap: 18px 10px;
  }
  .exchange .site-header .brand-name {
    font-size: 19px;
    letter-spacing: 1.5px;
  }
  .exchange .site-header .brand-sub {
    font-size: 9px;
    letter-spacing: 0;
  }
  .exchange .site-header .languages {
    font-size: 10px;
    padding: 3px;
    gap: 0;
  }
  .exchange .site-header .languages a {
    padding: 4px 8px;
    min-height: 38px;
  }
  .exchange .site-header nav {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px 10px;
    font-size: 12px;
  }
  .exchange .site-header nav a {
    white-space: normal;
    line-height: 1.5;
    justify-content: center;
    text-align: center;
  }
  .exchange .site-header nav a:nth-last-child(2) {
    grid-column: 1/3;
    margin-left: 0;
    justify-content: flex-start;
  }
  .exchange .site-header nav a:last-child {
    padding: 6px 12px;
  }
}

/* Shared public-page finish. Content, navigation and commerce remain page-owned. */
:root {
  --editorial-paper: #f5f2ea;
  --editorial-surface: #faf8f2;
  --editorial-ink: #1e2724;
  --editorial-muted: #60675f;
  --editorial-seal: #a33126;
  --editorial-line: #d7d7cc;
  --editorial-serif: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;
}

:is(.academy-page, .fuel-preview-page, .special-page, .exchange) {
  color: var(--editorial-ink);
  background: var(--editorial-paper);
  -webkit-font-smoothing: antialiased;
}

:is(.academy-page, .fuel-preview-page, .special-page, .exchange) :is(a, button):focus-visible {
  outline: 2px solid var(--editorial-seal);
  outline-offset: 5px;
}

:is(.academy-header, .fuel-header, .special-header) {
  min-height: 84px;
  padding-inline: clamp(20px, 4vw, 64px);
  background: rgba(245, 242, 234, .96);
  border-bottom: 1px solid var(--editorial-line);
  box-shadow: none;
}

.academy-header.is-scrolled {
  min-height: 72px;
  background: rgba(245, 242, 234, .96);
  box-shadow: none;
}

:is(.academy-brand, .fuel-brand, .special-brand) {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

:is(.academy-lang, .fuel-lang, .special-lang) {
  gap: 0;
  padding: 0;
  border: 1px solid var(--editorial-line);
  border-radius: 999px;
  overflow: hidden;
  background: transparent;
}

:is(.academy-lang, .fuel-lang, .special-lang) button {
  min-width: 44px;
  min-height: 44px;
  padding-inline: 10px;
  border-radius: 999px;
  font-family: Inter, sans-serif;
  font-size: 11px;
  font-weight: 600;
}

:is(.academy-lang, .fuel-lang, .special-lang) button[aria-pressed="true"] {
  background: var(--editorial-ink);
  color: var(--editorial-paper);
}

:is(.academy-nav, .fuel-nav) a,
.academy-account-link,
.fuel-header-actions > a,
.special-header-actions > a,
:is(.academy-footer, .fuel-footer, .special-footer) a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

:is(.academy-footer, .fuel-footer, .special-footer) {
  color: var(--editorial-muted);
  border-color: var(--editorial-line);
  padding-block: 32px 44px;
}

/* SELECT retains its book-cover identity, with quieter surfaces and clearer edges. */
.academy-page {
  --select-paper: var(--editorial-paper);
  --select-paper-bright: var(--editorial-surface);
  --select-ink: var(--editorial-ink);
  --select-muted: var(--editorial-muted);
  --select-line: var(--editorial-line);
  --select-seal: var(--editorial-seal);
}
.academy-paper { opacity: .12; }
.select-hero { background: var(--editorial-ink); }
.select-hero::after { border-color: rgba(245, 242, 234, .15); }
.select-hero h1 { font-weight: 900; }
.select-hero h1 span:last-child { color: #e0c7a4; }
.select-orbit { box-shadow: none; border-color: rgba(224, 199, 164, .15); }
.select-cover-main { box-shadow: -2px 3px 0 #d0c1a7, -5px 6px 0 #96846a, 10px 24px 35px #0003; }
.select-cover-back, .select-art-seal { box-shadow: none; }
.select-button, .academy-account-link { border-radius: 999px; }
.select-button-gold { background: var(--editorial-seal); border-color: var(--editorial-seal); box-shadow: none; }
.select-button:hover { transform: translateY(-3px); box-shadow: 0 8px 22px #0002; }
.select-section-index { color: var(--editorial-seal); }
.select-collection::before, .select-access-panel::after, .select-closing::before { display: none; }
.select-source-principle, .select-topic { background: var(--editorial-surface); box-shadow: none; }
.select-topic { border-color: var(--editorial-line); border-radius: 14px; }
.select-topic:hover { transform: translateY(-4px); border-color: #a9afa3; box-shadow: 0 15px 30px #17201c0d; }
.select-topic::before { box-shadow: none; }
.select-audience-professional .select-audience-heading,
.select-access-panel { background: var(--editorial-ink); box-shadow: none; }
.select-section h2, .select-closing h2 { font-weight: 900; }
.select-feature-link { display: inline-flex; min-height: 44px; align-items: center; }

/* Food Basics: an illustrated reading rhythm instead of floating UI cards. */
.fuel-preview-page {
  --ink: var(--editorial-ink);
  --muted: var(--editorial-muted);
  --cream: var(--editorial-paper);
  --paper: var(--editorial-surface);
  --sage: #e8ebe1;
  --orange: var(--editorial-seal);
  --line: var(--editorial-line);
}
.fuel-preview-page::before { display: none; }
.fuel-hero-art { transform: none; }
.fuel-hero-art img {
  border: 1px solid var(--editorial-line);
  border-radius: 2px;
  box-shadow: none;
}
.fuel-hero-art figcaption { margin-inline: 0; padding-top: 8px; }
.fuel-hero h1 { font-size: clamp(46px, 4.8vw, 68px); font-weight: 900; line-height: 1.4; text-wrap: balance; }
.fuel-hero-lead { font-size: clamp(17px, 1.6vw, 20px); }
.fuel-hero-facts { gap: 0; }
.fuel-hero-facts span { flex: 1; background: transparent; border-top: 1px solid var(--editorial-line); border-right: 1px solid var(--editorial-line); }
.fuel-hero-facts span:first-child { padding-left: 0; }
.fuel-hero-facts span:last-child { border-right: 0; }
.fuel-hero-facts strong { color: var(--editorial-seal); font-weight: 500; }
:is(.fuel-primary, .fuel-secondary, .fuel-special-bridge a) { border-radius: 999px; transition: transform .3s ease, background .3s ease, box-shadow .3s ease; }
:is(.fuel-primary, .fuel-secondary, .fuel-special-bridge a):hover { transform: translateY(-3px); box-shadow: 0 8px 20px #17201c12; }
.fuel-section-heading h2, .fuel-scope h2, .fuel-cta h2 { font-weight: 900; line-height: 1.4; }
.fuel-section-heading > p:last-child { letter-spacing: normal; font-weight: 400; }
.fuel-steps { gap: 0; border-block: 1px solid var(--editorial-line); }
.fuel-steps article { border: 0; border-right: 1px solid var(--editorial-line); border-radius: 0; background: transparent; }
.fuel-steps article:last-child { border-right: 0; }
.fuel-note { border-radius: 0; border-left: 2px solid var(--editorial-seal); background: #e8ebe1; }
.fuel-lesson-card, .fuel-scope-copy li { border-radius: 14px; }
.fuel-lesson-card:hover { transform: translateY(-3px); box-shadow: 0 12px 24px #17201c0d; border-color: #a9afa3; }
.fuel-lesson-card h4 { line-height: 1.6; }
.fuel-special-bridge { border-top-width: 2px; }
.fuel-special-bridge li { border-radius: 2px; background: transparent; }
.fuel-cta { border-radius: 0; }
.fuel-cta .fuel-kicker { color: #e0c7a4; }
.fuel-cta .fuel-primary { background: var(--editorial-paper); }
.fuel-cta small { color: #c5c9c0; line-height: 1.8; }

/* Special routes retain their four useful identifying colours. */
.special-page :is(h1, h2) { font-family: var(--editorial-serif); font-weight: 900; line-height: 1.4; }
.special-page main, .special-footer { width: min(1180px, calc(100% - 40px)); }
.special-hero { padding-bottom: clamp(48px, 6vw, 80px); }
.special-hero h1 { letter-spacing: -.035em; }
.special-eyebrow, .special-course-label, .special-header > span { color: var(--editorial-seal); font-family: Inter, sans-serif; font-weight: 600; }
.special-actions a { border-radius: 999px; transition: transform .3s ease, background .3s ease; }
.special-actions a:hover { transform: translateY(-3px); }
.special-primary-action { color: var(--editorial-paper); background: var(--editorial-ink); }
.special-facts { max-width: 760px; border-block: 1px solid var(--editorial-line); background: var(--editorial-line); }
.special-facts div { flex: 1; background: var(--editorial-paper); }
.special-facts strong { color: var(--editorial-seal); }
.special-promise { border-left: 2px solid var(--editorial-seal); border-radius: 0; background: #e8ebe1; }
.special-route-choice > span, .special-route-identity span { border-radius: 2px; }
.special-course figure { border: 1px solid var(--editorial-line); border-radius: 2px; box-shadow: none; }
.special-route-identity { position: static; border: 0; border-radius: 0; background: var(--route-accent); box-shadow: none; }
.special-course li, .special-boundary-grid > div { border-radius: 2px; border-color: var(--editorial-line); background: var(--editorial-surface); }
.special-unit-cue { border-radius: 2px; box-shadow: none; }
.special-course-result { border-left-width: 2px; }

/* Exchange shares the paper-and-ink palette while keeping its field imagery. */
.exchange {
  --paper: var(--editorial-paper);
  --ink: var(--editorial-ink);
  --green: #253d33;
  --line: var(--editorial-line);
  --muted: var(--editorial-muted);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
}
.exchange header.site-header { padding-top: 28px; }
.exchange .site-header .languages { border-radius: 999px; background: transparent; padding: 3px; }
.exchange .site-header .languages a { min-height: 44px; min-width: 44px; border-radius: 999px; }
.exchange .site-header .languages [aria-current] { background: var(--editorial-ink); }
.exchange .site-header .brand > a { display: inline-flex; align-items: center; gap: 19px; }
.exchange .site-header .brand-calligraphy { width: 132px; height: auto; flex: none; mix-blend-mode: multiply; }
.exchange .site-header .brand-lockup { display: grid; padding-left: 19px; border-left: 1px solid var(--editorial-line); }
.exchange .site-header nav a:last-child { border-radius: 999px; border-color: var(--editorial-line); background: transparent; }
.exchange .site-header nav a:last-child:hover { border-color: var(--editorial-ink); }
.exchange .small-label { font-family: Inter, -apple-system, sans-serif; font-size: 11px; font-weight: 600; }
.exchange .mast { margin-block: 32px; }
.exchange .mast, .exchange .mast-intro, .exchange .project, .exchange .session { box-shadow: none; }
.exchange .portal-stamp, .exchange .tags span, .exchange .badge { border-radius: 2px; }
.exchange .button { border: 1px solid transparent; border-radius: 999px; background: var(--editorial-ink); transition: transform .3s ease, background .3s ease; }
.exchange .button:hover, .exchange .button:focus-visible { transform: translateY(-2px); background: var(--editorial-seal); }
.exchange :is(h1, h2) { font-weight: 700; }
html[lang="en"] :is(.select-hero h1, .select-section h2, .select-closing h2, .fuel-hero h1, .fuel-section-heading h2, .fuel-scope h2, .fuel-cta h2, .special-page h1, .special-page h2, .exchange h1, .exchange h2) { font-weight: 700; }
:is(.academy-page, .fuel-preview-page, .special-page, .exchange) :is(h1, h2, h3) { line-break: strict; }
:is(.academy-page, .fuel-preview-page, .special-page, .exchange) :is(p, li) { text-wrap: pretty; }
html[lang="ja"] :is(.fuel-hero h1, .exchange .mast-intro h1) { white-space: pre-line; }
@supports (word-break: auto-phrase) {
  html[lang="ja"] :is(.academy-page, .fuel-preview-page, .special-page, .exchange) :is(h1, h2, h3) { word-break: auto-phrase; }
}
.exchange .footer-links a { display: inline-flex; align-items: center; min-height: 44px; }

@media (max-width: 980px) {
  .academy-header-actions { gap: 10px; }
}

@media (max-width: 900px) {
  .exchange .site-header .brand-calligraphy { width: 105px; }
  .exchange .site-header .brand-lockup { gap: 2px; padding-left: 14px; }
  .fuel-header-actions > a { display: none; }
  .fuel-hero-art { order: 0; }
  .fuel-steps article:nth-child(2) { border-right: 0; }
  .fuel-steps article:nth-child(-n + 2) { border-bottom: 1px solid var(--editorial-line); }
}

@media (max-width: 760px) {
  .special-header-actions > a { display: none; }
}

@media (max-width: 600px) {
  :is(.academy-header, .fuel-header, .special-header) { min-height: 76px; padding: 10px 20px; gap: 12px; }
  .academy-header.is-scrolled { min-height: 76px; padding-block: 10px; }
  .academy-brand img, .academy-header.is-scrolled .academy-brand img { width: 94px; }
  .academy-account-link { min-height: 44px; padding-inline: 8px; font-size: 10px; }
  .academy-header-actions { gap: 8px; }
  :is(.academy-lang, .fuel-lang, .special-lang) button { min-width: 44px; min-height: 44px; }
  .select-section, .select-feature-strip, .select-access { width: calc(100% - 40px); }
  .select-hero-copy { padding-inline: 20px; }
  .select-feature-strip { padding-inline: 0; }
  .academy-footer { padding-inline: 20px; }
  .fuel-hero, .fuel-section, .fuel-cta, .fuel-footer { width: calc(100% - 40px); }
  .fuel-hero { padding-top: 44px; }
  .fuel-hero h1 { font-size: clamp(38px, 10vw, 48px); }
  .fuel-hero-art img { border-width: 1px; border-radius: 2px; }
  .fuel-section { padding-block: 64px; }
  .fuel-steps article { padding: 26px 0; border-right: 0; border-bottom: 1px solid var(--editorial-line); }
  .fuel-steps article:last-child { border-bottom: 0; }
  .fuel-footer { align-items: flex-start; flex-direction: column; gap: 12px; line-height: 1.7; }
  .special-hero h1, html[lang="ja"] .special-hero h1 { font-size: clamp(32px, 9vw, 44px); line-height: 1.4; }
  .special-hero { padding-top: 44px; }
  .special-lead { margin-block: 24px; }
  .special-facts div { min-width: calc(50% - 1px); }
  .special-facts div:last-child { width: 100%; }
  .special-route-identity { padding: 12px; }
  .special-course figure { border-width: 1px; border-radius: 2px; }
  .exchange .mast { margin-block: 24px; }
  .exchange header.site-header { grid-template-columns: 1fr auto; grid-template-areas: "brand languages" "navigation navigation"; }
  .exchange .site-header .brand > a { gap: 8px; }
  .exchange .site-header .brand-calligraphy { width: 70px; }
  .exchange .site-header .brand-lockup { padding-left: 8px; }
  .exchange .site-header .brand-name { font-size: 17px; letter-spacing: .8px; }
  .exchange .site-header .brand-name > span { letter-spacing: 2.5px; }
  .exchange .site-header .brand-sub { font-size: 10px; }
  .exchange .site-header .languages { font-size: 9px; }
  .exchange .site-header .languages a { min-height: 44px; min-width: 44px; padding-inline: 4px; }
}

@media (max-width: 360px) {
  .exchange header.site-header { grid-template-columns: 1fr; grid-template-areas: "brand" "languages" "navigation"; }
  .exchange .site-header .languages { justify-self: start; }
  .academy-header { grid-template-columns: 1fr; }
  .academy-header-actions { justify-self: stretch; justify-content: space-between; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  :is(.academy-page, .fuel-preview-page, .special-page, .exchange) *,
  :is(.academy-page, .fuel-preview-page, .special-page, .exchange) *::before,
  :is(.academy-page, .fuel-preview-page, .special-page, .exchange) *::after {
    animation: none !important;
    transition: none !important;
  }
  .reveal-ready [data-reveal] { opacity: 1; transform: none; }
  :is(.select-button, .select-topic, .fuel-primary, .fuel-secondary, .fuel-lesson-card, .fuel-special-bridge a, .special-actions a, .exchange .button):is(:hover, :focus-visible) { transform: none; }
}