:root {
  --ink: #0d211d;
  --ink-soft: #29433d;
  --paper: #f4f5ee;
  --paper-deep: #e6ece4;
  --sea: #0b7569;
  --sea-dark: #084d48;
  --mint: #cde1d4;
  --coral: #f56849;
  --coral-soft: #ffd8cd;
  --lime: #d9ef7a;
  --white: #fffef9;
  --line: rgba(13, 33, 29, 0.18);
  --line-light: rgba(255, 255, 255, 0.24);
  --display: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --shell: 1280px;
  --header-height: 78px;
  --gallery-arrow-bg: rgba(3, 22, 19, 0.28);
  --gallery-arrow-border: rgba(255, 255, 255, 0.58);
  --gallery-arrow-hover-bg: rgba(8, 52, 45, 0.72);
  --gallery-arrow-hover-border: rgba(217, 239, 122, 0.86);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  background: var(--ink);
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

button {
  cursor: pointer;
}

::selection {
  background: var(--coral);
  color: var(--white);
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 999;
  padding: 10px 16px;
  background: var(--white);
  color: var(--ink);
  transform: translateY(-160%);
}

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

.sr-only {
  position: absolute;
  overflow: hidden;
  width: 1px;
  height: 1px;
  padding: 0;
  border: 0;
  margin: -1px;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.section-shell {
  width: min(calc(100% - 64px), var(--shell));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 100;
  color: var(--white);
  transition:
    background-color 240ms ease,
    color 240ms ease,
    box-shadow 240ms ease;
}

.site-header.is-scrolled,
.site-header.menu-active {
  background: rgba(244, 245, 238, 0.94);
  color: var(--ink);
  box-shadow: 0 1px 0 rgba(13, 33, 29, 0.12);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 64px), var(--shell));
  height: var(--header-height);
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  gap: 12px;
  align-items: center;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-family: var(--display);
  font-size: 20px;
  line-height: 1;
}

.brand-word {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-word strong {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.16em;
}

.brand-word small {
  margin-top: 5px;
  font-size: 10px;
  letter-spacing: 0.12em;
  opacity: 0.72;
}

.desktop-nav {
  display: flex;
  gap: 32px;
  align-items: center;
}

.desktop-nav a {
  position: relative;
  font-size: 13px;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms ease;
}

.desktop-nav a:hover::after,
.desktop-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.language-button,
.project-home-button,
.menu-button {
  display: inline-grid;
  height: 38px;
  place-items: center;
  border: 1px solid currentColor;
  background: transparent;
  color: inherit;
}

.project-home-button {
  gap: 7px;
  height: 44px;
  padding: 0 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
}

.project-home-button .icon {
  width: 15px;
  height: 15px;
}

.language-button {
  min-width: 52px;
  border-radius: 100px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.menu-button {
  display: none;
  width: 38px;
  border-radius: 50%;
}

.icon {
  display: inline-block;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  background: currentColor;
  -webkit-mask: var(--icon) center / contain no-repeat;
  mask: var(--icon) center / contain no-repeat;
}

.icon-menu {
  --icon: url("assets/icons/menu.svg");
}

.icon-home {
  --icon: url("assets/icons/home.svg");
}

.icon-x {
  --icon: url("assets/icons/x.svg");
}

.icon-chevron-left {
  --icon: url("assets/icons/chevron-left.svg");
}

.icon-chevron-right {
  --icon: url("assets/icons/chevron-right.svg");
}

.icon-compass {
  --icon: url("assets/icons/compass.svg");
}

.icon-send {
  --icon: url("assets/icons/send.svg");
}

.icon-arrow-down {
  --icon: url("assets/icons/arrow-down.svg");
}

.icon-map-pin {
  --icon: url("assets/icons/map-pin.svg");
}

.icon-sparkles {
  --icon: url("assets/icons/sparkles.svg");
}

.icon-download {
  --icon: url("assets/icons/download.svg");
}

.icon-share-2 {
  --icon: url("assets/icons/share-2.svg");
}

.icon-bot {
  --icon: url("assets/icons/bot.svg");
}

.icon-arrow-up-right {
  --icon: url("assets/icons/arrow-up-right.svg");
}

.menu-button .icon,
.button .icon,
.ai-note .icon,
.route-stage-mark .icon,
.footer-link .icon,
.scroll-cue .icon {
  width: 18px;
  height: 18px;
}

.mobile-menu {
  padding: 14px 32px 30px;
  border-top: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
}

.mobile-menu a {
  display: block;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--display);
  font-size: 24px;
}

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
}

.hero-media,
.hero-shade,
.hero-media picture,
.hero-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media img {
  object-fit: cover;
  object-position: center 53%;
  animation: hero-drift 16s ease-out both;
}

.hero-shade {
  background:
    linear-gradient(180deg, rgba(4, 21, 19, 0.48) 0%, rgba(4, 21, 19, 0.05) 34%, rgba(4, 21, 19, 0.14) 56%, rgba(4, 21, 19, 0.86) 100%),
    linear-gradient(90deg, rgba(4, 21, 19, 0.42) 0%, rgba(4, 21, 19, 0) 62%);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  grid-template-rows: auto 1fr auto;
  width: min(calc(100% - 64px), var(--shell));
  min-height: 100svh;
  margin: 0 auto;
  padding: calc(var(--header-height) + 28px) 0 94px;
}

.hero-kicker {
  display: flex;
  grid-column: 1 / -1;
  gap: 16px;
  align-items: center;
  align-self: start;
  padding-top: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-kicker span {
  display: inline-flex;
  align-items: center;
}

.hero-kicker span + span::before {
  width: 34px;
  height: 1px;
  margin-right: 16px;
  background: currentColor;
  content: "";
  opacity: 0.6;
}

.hero-copy {
  grid-column: 1;
  align-self: center;
  max-width: 980px;
  padding-top: 76px;
}

.hero-category {
  margin: 0 0 20px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 980px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(4rem, 8.3vw, 8rem);
  font-weight: 600;
  letter-spacing: 0;
  line-height: 0.92;
}

.hero h1 span {
  display: block;
}

.hero-english {
  margin: 22px 0 0;
  font-family: var(--mono);
  font-size: clamp(0.7rem, 1.2vw, 0.88rem);
  letter-spacing: 0.3em;
}

.hero-lede {
  max-width: 660px;
  margin: 26px 0 0;
  color: rgba(255, 254, 249, 0.88);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  transition:
    background-color 200ms ease,
    border-color 200ms ease,
    color 200ms ease,
    transform 200ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--white);
  color: var(--ink);
}

.button-primary:hover {
  background: var(--lime);
}

.button-ghost {
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--white);
}

.button-ghost:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

.hero-coordinate {
  display: flex;
  grid-column: 2;
  flex-direction: column;
  align-self: end;
  justify-self: end;
  padding-bottom: 8px;
  text-align: right;
}

.hero-coordinate span {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.hero-coordinate p {
  margin: 18px 0 0;
  color: rgba(255, 254, 249, 0.72);
  font-size: 12px;
  line-height: 1.8;
  white-space: pre-line;
}

.hero-bottom {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 64px), var(--shell));
  margin: 0 auto;
  padding: 20px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-tags {
  display: flex;
  gap: 24px;
}

.hero-tags span {
  font-size: 12px;
  letter-spacing: 0.16em;
}

.hero-tags span::before {
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--coral);
  content: "";
  vertical-align: 2px;
}

.scroll-cue {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.scroll-cue .icon {
  animation: cue-bounce 1.8s ease-in-out infinite;
}

.section-paper,
.route-section,
.ideas-section,
.about-section {
  position: relative;
  background: var(--paper);
}

.manifesto,
.route-section,
.ideas-section,
.about-section {
  padding: 140px 0;
}

.section-index {
  display: flex;
  gap: 16px;
  align-items: center;
  color: var(--sea);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.section-index span:first-child {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--sea);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.manifesto-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(280px, 0.88fr);
  gap: 10vw;
  align-items: start;
  margin-top: 54px;
}

.manifesto h2,
.section-heading h2,
.ideas-heading h2,
.about-top h2,
.footer-callout h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.7rem, 5.2vw, 5rem);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.12;
}

.manifesto-title-wrap h2 {
  max-width: 760px;
}

.manifesto-copy {
  padding-top: 38px;
}

.manifesto-copy p {
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  line-height: 1.95;
}

.manifesto-copy p + p {
  margin-top: 24px;
}

.value-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 90px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.value-item {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: baseline;
  padding: 28px 28px 28px 0;
}

.value-item + .value-item {
  padding-left: 28px;
  border-left: 1px solid var(--line);
}

.value-item strong {
  font-family: var(--display);
  font-size: 30px;
  font-weight: 500;
}

.value-item span {
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
}

.value-number {
  color: var(--coral) !important;
}

.moving-line {
  overflow: hidden;
  margin-top: 100px;
  padding: 20px 0;
  background: var(--ink);
  color: var(--white);
}

.moving-track {
  display: flex;
  width: max-content;
  align-items: center;
  animation: marquee 34s linear infinite;
}

.moving-track span {
  padding: 0 28px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.11em;
  white-space: nowrap;
}

.moving-track span::after {
  margin-left: 56px;
  color: var(--coral);
  content: "✦";
}

.route-section {
  background: var(--paper-deep);
}

.section-heading {
  display: grid;
  grid-template-columns: 0.42fr 1.58fr 0.7fr;
  gap: 28px;
  align-items: start;
}

.section-heading h2 {
  font-size: clamp(2.7rem, 4.3vw, 4.5rem);
  text-wrap: balance;
}

.section-intro {
  max-width: 430px;
  margin: 34px 0 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.9;
}

.route-experience {
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  min-height: 620px;
  margin-top: 72px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.route-tabs {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
}

.route-tab {
  position: relative;
  display: grid;
  grid-template-columns: 38px 1fr auto;
  gap: 12px;
  align-items: center;
  min-height: 136px;
  padding: 24px 22px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  text-align: left;
  transition:
    background-color 220ms ease,
    color 220ms ease;
}

.route-tab:last-child {
  border-bottom: 0;
}

.route-tab::after {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  background: var(--coral);
  content: "";
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 260ms ease;
}

.route-tab:hover,
.route-tab:focus-visible {
  background: rgba(255, 255, 255, 0.5);
}

.route-tab.is-active {
  background: var(--ink);
  color: var(--white);
}

.route-tab.is-active::after {
  transform: scaleY(1);
}

.route-tab-number,
.route-tab-en {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.route-tab-number {
  color: var(--coral);
}

.route-tab-copy {
  display: flex;
  flex-direction: column;
}

.route-tab-copy strong {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 500;
}

.route-tab-copy small {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 11px;
}

.route-tab.is-active .route-tab-copy small {
  color: rgba(255, 254, 249, 0.62);
}

.route-tab-en {
  writing-mode: vertical-rl;
}

.route-stage {
  position: relative;
  min-width: 0;
  min-height: 620px;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
}

.route-gallery {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.route-gallery-item {
  position: absolute;
  z-index: 3;
  overflow: hidden;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: var(--ink);
  color: var(--white);
  text-align: left;
  cursor: pointer;
  transition:
    left 2000ms cubic-bezier(0.42, 0, 0.58, 1),
    top 2000ms cubic-bezier(0.42, 0, 0.58, 1),
    width 2000ms cubic-bezier(0.42, 0, 0.58, 1),
    height 2000ms cubic-bezier(0.42, 0, 0.58, 1),
    border-radius 2000ms cubic-bezier(0.42, 0, 0.58, 1),
    box-shadow 2000ms ease;
}

.route-gallery-item::after {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(4, 20, 18, 0.04) 20%, rgba(4, 20, 18, 0.64) 100%),
    linear-gradient(90deg, rgba(4, 20, 18, 0.24), transparent 52%);
  content: "";
  pointer-events: none;
}

.route-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 2000ms cubic-bezier(0.42, 0, 0.58, 1);
}

.route-gallery-item:hover img {
  transform: scale(1.035);
}

.route-gallery-item.is-thumbnail {
  z-index: 8;
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: 24px;
  box-shadow: 0 18px 42px rgba(0, 8, 6, 0.32);
}

.route-gallery-item.is-selected {
  z-index: 3;
  cursor: default;
}

.route-gallery-item.is-promoting {
  z-index: 7;
}

.route-gallery-item.is-moving-thumb {
  z-index: 8;
  background: transparent;
  animation: route-moving-reveal 2000ms ease-in-out both;
}

.route-gallery-item.is-stationary-thumb {
  z-index: 9;
}

.route-stage-shade {
  position: absolute;
  z-index: 2;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(4, 20, 18, 0.1) 20%, rgba(4, 20, 18, 0.9) 100%),
    linear-gradient(90deg, rgba(4, 20, 18, 0.42) 0%, rgba(4, 20, 18, 0) 65%);
}

.route-panel {
  position: absolute;
  right: 48px;
  bottom: 48px;
  left: 48px;
  z-index: 2;
  max-width: 720px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(18px);
  transition:
    opacity 350ms ease,
    transform 440ms ease;
}

.route-stage .route-gallery-copy {
  top: 28%;
  right: auto;
  bottom: auto;
  left: 5%;
  width: 64%;
  max-width: none;
  height: 56%;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02)),
    rgba(3, 23, 20, 0.26);
  box-shadow:
    0 24px 60px rgba(0, 8, 6, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.24);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  opacity: 0;
  visibility: hidden;
  z-index: 7;
  transform: scale(0.88);
  transition:
    opacity 2000ms ease,
    transform 2000ms cubic-bezier(0.42, 0, 0.58, 1),
    visibility 0s linear 2000ms;
}

.route-stage.is-expanded .route-gallery-copy {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: scale(1);
  transition:
    opacity 2000ms ease,
    transform 2000ms cubic-bezier(0.42, 0, 0.58, 1),
    visibility 0s linear 0s;
}

.route-copy-current,
.route-copy-buffer {
  position: absolute;
  inset: 24px;
  overflow: hidden;
  transform-origin: 50% 50%;
}

.route-copy-buffer {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.84);
}

.route-gallery-copy.is-copy-switching .route-copy-current {
  animation: route-copy-shrink 2000ms cubic-bezier(0.42, 0, 0.58, 1) both;
}

.route-gallery-copy.is-copy-switching .route-copy-buffer {
  animation: route-copy-grow 2000ms cubic-bezier(0.42, 0, 0.58, 1) both;
}

.route-gallery-copy.is-copy-switching {
  animation: route-copy-panel 2000ms cubic-bezier(0.42, 0, 0.58, 1) both;
}

@keyframes route-copy-shrink {
  0% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(0.72);
  }
}

@keyframes route-copy-grow {
  0% {
    opacity: 0;
    transform: scale(0.72);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes route-copy-panel {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(0.94);
  }
}

@keyframes route-moving-reveal {
  0% {
    opacity: 1;
  }
  12%,
  88% {
    opacity: 0.62;
  }
  100% {
    opacity: 1;
  }
}

.route-panel.is-active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.route-panel-label {
  display: block;
  margin-bottom: 20px;
  color: var(--lime);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.route-panel h3 {
  max-width: 700px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.2rem, 4vw, 4rem);
  font-weight: 500;
  line-height: 1.12;
}

.route-panel p {
  max-width: 640px;
  margin: 22px 0 0;
  color: rgba(255, 254, 249, 0.78);
  font-size: 15px;
  line-height: 1.9;
}

.photo-caption {
  display: block;
  margin-top: 24px;
  color: rgba(255, 254, 249, 0.46);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.05em;
}

.route-stage-mark {
  position: absolute;
  top: 24px;
  right: 24px;
  z-index: 3;
  display: flex;
  gap: 8px;
  align-items: center;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
}

.route-stage-mark .icon {
  color: var(--coral);
}

.ideas-section {
  background: var(--paper);
}

.ideas-heading {
  display: grid;
  grid-template-columns: 0.52fr 1.4fr 0.8fr;
  gap: 40px;
  align-items: start;
}

.idea-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 90px;
  border-top: 1px solid var(--line);
}

.idea-step {
  min-height: 300px;
  padding: 28px 28px 34px 0;
}

.idea-step + .idea-step {
  padding-left: 28px;
  border-left: 1px solid var(--line);
}

.idea-step-number,
.idea-step-en {
  color: var(--sea);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.09em;
}

.idea-step-en {
  float: right;
  color: var(--coral);
}

.idea-step h3 {
  margin: 66px 0 18px;
  font-family: var(--display);
  font-size: 28px;
  font-weight: 500;
  line-height: 1.25;
}

.idea-step p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.85;
}

.ideas-quote {
  position: relative;
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 30px;
  margin: 90px 0 0;
  padding: 54px 60px;
  background: var(--ink);
  color: var(--white);
}

.ideas-quote span {
  color: var(--coral);
  font-family: var(--display);
  font-size: 110px;
  line-height: 0.8;
}

.ideas-quote p {
  max-width: 950px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.2vw, 3rem);
  line-height: 1.45;
}

.postcard-section {
  padding: 140px 0;
  background: var(--coral-soft);
}

.postcard-heading .eyebrow {
  color: #a33a25;
}

.postcard-heading .section-index {
  color: #a33a25;
}

.postcard-generator {
  display: grid;
  grid-template-columns: minmax(280px, 0.58fr) minmax(0, 1.42fr);
  gap: 34px;
  margin-top: 70px;
}

.postcard-form {
  display: flex;
  flex-direction: column;
  padding: 34px;
  border: 1px solid rgba(13, 33, 29, 0.2);
  background: rgba(255, 254, 249, 0.46);
}

.form-field {
  position: relative;
  margin-bottom: 28px;
  border: 0;
}

.form-field label,
.form-field legend {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.form-field input,
.form-field select {
  width: 100%;
  height: 52px;
  padding: 0 14px;
  border: 1px solid rgba(13, 33, 29, 0.36);
  border-radius: 0;
  outline: 0;
  background: rgba(255, 254, 249, 0.72);
}

.form-field input:focus,
.form-field select:focus {
  border-color: var(--ink);
}

.field-hint {
  position: absolute;
  top: 1px;
  right: 0;
  color: rgba(13, 33, 29, 0.6);
  font-size: 10px;
}

.theme-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.theme-swatch {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 9px 12px 9px 9px;
  border: 1px solid rgba(13, 33, 29, 0.24);
  background: transparent;
  font-size: 12px;
}

.theme-swatch.is-active {
  border-color: var(--ink);
  background: var(--white);
}

.swatch-color {
  width: 22px;
  height: 22px;
  border-radius: 50%;
}

.swatch-sea {
  background: #0b7569;
}

.swatch-sunset {
  background: #f56849;
}

.swatch-ink {
  background: #292d2a;
}

.swatch-tech {
  background: #258cff;
}

.button-dark {
  margin-top: auto;
  background: var(--ink);
  color: var(--white);
}

.button-dark:hover {
  background: var(--sea);
}

.button-full {
  width: 100%;
}

.postcard-preview {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.canvas-wrap {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 1200 / 630;
  background: var(--ink);
  box-shadow: 0 24px 70px rgba(84, 38, 25, 0.16);
}

.canvas-wrap > canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  transform: translateX(0);
  will-change: transform;
}

.canvas-wrap > .postcard-canvas-buffer {
  z-index: 2;
  visibility: hidden;
  pointer-events: none;
}

.postcard-image-arrow {
  --gallery-arrow-bg: rgba(224, 229, 226, 0.82);
  --gallery-arrow-border: rgba(255, 255, 255, 0.72);
  --gallery-arrow-hover-bg: rgba(239, 242, 240, 0.92);
  --gallery-arrow-hover-border: rgba(255, 255, 255, 0.9);
  position: absolute;
  z-index: 5;
  top: 50%;
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid var(--gallery-arrow-border);
  border-radius: 50%;
  background: var(--gallery-arrow-bg);
  box-shadow:
    0 8px 22px rgba(3, 24, 20, 0.16),
    inset 0 1px 0 rgba(255, 255, 255, 0.72);
  color: var(--ink);
  transform: translateY(-50%);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.postcard-image-arrow:hover,
.postcard-image-arrow:focus-visible {
  border-color: var(--gallery-arrow-hover-border);
  background: var(--gallery-arrow-hover-bg);
  transform: translateY(-50%) scale(1.06);
}

.postcard-image-arrow:disabled {
  cursor: wait;
  opacity: 0.5;
}

.postcard-image-prev {
  left: 16px;
}

.postcard-image-next {
  right: 16px;
}

.postcard-image-count {
  position: absolute;
  z-index: 5;
  bottom: 16px;
  left: 16px;
  padding: 6px 9px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 999px;
  background: rgba(3, 24, 20, 0.42);
  color: rgba(255, 254, 249, 0.86);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.postcard-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.postcard-actions button:disabled {
  cursor: wait;
  opacity: 0.55;
}

.button-outline {
  border-color: rgba(13, 33, 29, 0.4);
  background: rgba(255, 254, 249, 0.25);
}

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

.card-status {
  min-height: 24px;
  margin: 10px 0 0;
  color: rgba(13, 33, 29, 0.66);
  font-size: 11px;
}

.about-section {
  padding-bottom: 120px;
}

.about-top {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 70px;
  align-items: start;
}

.creator-stamp {
  display: flex;
  width: 170px;
  height: 170px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  transform: rotate(-8deg);
}

.creator-stamp span {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.12em;
}

.creator-stamp strong {
  margin: 2px 0;
  color: var(--coral);
  font-family: var(--display);
  font-size: 62px;
  font-weight: 500;
  line-height: 1;
}

.about-top h2 {
  max-width: 960px;
  font-size: clamp(1.7rem, 2.8vw, 2.7rem);
  white-space: nowrap;
}

.about-lead {
  max-width: none;
  margin: 30px 0 0;
  color: var(--ink-soft);
  font-size: clamp(0.8rem, 1.05vw, 1rem);
  line-height: 1.9;
  white-space: nowrap;
}

html[lang="en"] .about-top h2,
html[lang="en"] .about-lead {
  white-space: normal;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 86px;
  border-top: 1px solid var(--line);
}

.about-note {
  min-height: 260px;
  padding: 30px 34px 30px 0;
}

.about-note + .about-note {
  padding-left: 34px;
  border-left: 1px solid var(--line);
}

.about-note-index {
  color: var(--sea);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
}

.about-note h3 {
  margin: 56px 0 16px;
  font-family: var(--display);
  font-size: 30px;
  font-weight: 500;
}

.about-note p {
  max-width: 360px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.9;
}

.ai-note {
  display: grid;
  grid-template-columns: 60px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  margin-top: 32px;
  padding: 34px;
  background: var(--paper-deep);
}

.ai-note > .icon {
  width: 32px;
  height: 32px;
  color: var(--sea);
}

.ai-note h3 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: 24px;
  font-weight: 500;
}

.ai-note p {
  max-width: 920px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.9;
}

.creator-line {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  align-items: baseline;
  margin-top: 54px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.creator-dot {
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: currentColor;
}

.creator-line span {
  color: var(--ink-soft);
}

.creator-line strong {
  font-family: var(--display);
  font-size: 24px;
  font-weight: 500;
}

.site-footer {
  padding: 130px 0 40px;
  background: var(--ink);
  color: var(--white);
}

.footer-callout {
  padding-bottom: 100px;
}

.footer-callout > p {
  margin: 0 0 20px;
  color: var(--lime);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
}

.footer-callout h2 {
  max-width: 900px;
  white-space: pre-line;
}

.footer-link {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  margin-top: 32px;
  padding-bottom: 4px;
  border-bottom: 1px solid currentColor;
  font-size: 14px;
}

.footer-link .icon {
  transition: transform 200ms ease;
}

.footer-link:hover .icon {
  transform: translate(3px, -3px);
}

.footer-meta {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding: 28px 0;
  border-top: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
  font-size: 11px;
}

.footer-meta p {
  margin: 6px 0 0;
  color: rgba(255, 254, 249, 0.54);
}

.footer-meta > div:last-child {
  display: flex;
  gap: 26px;
  align-items: flex-start;
}

.credits {
  padding-top: 26px;
  color: rgba(255, 254, 249, 0.54);
  font-size: 10px;
  line-height: 1.8;
}

.credits summary {
  cursor: pointer;
  font-family: var(--mono);
  letter-spacing: 0.06em;
}

.credits p {
  max-width: 980px;
  margin: 18px 0 0;
}

.credits a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.noscript-note {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 300;
  max-width: 360px;
  padding: 14px 18px;
  background: var(--white);
  color: var(--ink);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.22);
  font-size: 13px;
}

.reveal.will-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 700ms cubic-bezier(0.2, 0.7, 0.2, 1),
    transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.reveal.will-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes hero-drift {
  from {
    transform: scale(1.06);
  }
  to {
    transform: scale(1);
  }
}

@keyframes cue-bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(5px);
  }
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@media (max-width: 1100px) {
  .section-heading,
  .ideas-heading {
    grid-template-columns: 0.45fr 1.55fr;
  }

  .section-heading .section-intro,
  .ideas-heading .section-intro {
    grid-column: 2;
    max-width: 620px;
    margin-top: 0;
  }

  .route-experience {
    grid-template-columns: 280px minmax(0, 1fr);
  }

  .route-tab {
    grid-template-columns: 30px 1fr;
  }

  .route-tab-en {
    display: none;
  }

  .postcard-generator {
    grid-template-columns: 1fr;
  }

  .postcard-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 24px;
  }

  .postcard-form .button {
    grid-column: 1 / -1;
  }
}

@media (max-width: 1000px) {
  .about-top {
    grid-template-columns: 1fr;
    gap: 42px;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 68px;
  }

  .section-shell,
  .header-inner,
  .hero-inner,
  .hero-bottom {
    width: min(calc(100% - 40px), var(--shell));
  }

  .desktop-nav {
    display: none;
  }

  .menu-button {
    display: inline-grid;
  }

  .manifesto,
  .route-section,
  .ideas-section,
  .postcard-section,
  .about-section {
    padding-top: 96px;
    padding-bottom: 96px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    padding-top: calc(var(--header-height) + 30px);
    padding-bottom: 100px;
  }

  .hero-copy {
    padding-top: 120px;
  }

  .hero-coordinate {
    display: none;
  }

  .hero h1 {
    font-size: clamp(3.4rem, 13vw, 6rem);
  }

  .manifesto-grid,
  .section-heading,
  .ideas-heading,
  .about-top {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .section-heading .section-intro,
  .ideas-heading .section-intro {
    grid-column: auto;
  }

  .manifesto-copy {
    padding-top: 0;
  }

  .value-row {
    grid-template-columns: 1fr;
  }

  .value-item + .value-item {
    padding-left: 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .route-experience {
    grid-template-columns: 1fr;
  }

  .route-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .route-tab {
    display: flex;
    min-height: 108px;
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
    padding: 16px;
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }

  .route-tab:last-child {
    border-right: 0;
  }

  .route-tab-copy strong {
    font-size: 16px;
  }

  .route-tab-copy small {
    display: none;
  }

  .route-stage {
    min-height: 600px;
  }

  .idea-track {
    grid-template-columns: 1fr 1fr;
  }

  .idea-step {
    min-height: 260px;
  }

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

  .idea-step:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .ideas-quote {
    grid-template-columns: 54px 1fr;
    gap: 12px;
    padding: 38px 32px;
  }

  .ideas-quote span {
    font-size: 74px;
  }

  .about-top {
    gap: 42px;
  }

  .about-top h2,
  .about-lead {
    white-space: normal;
  }

  .creator-stamp {
    width: 126px;
    height: 126px;
  }

  .creator-stamp strong {
    font-size: 46px;
  }

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

  .about-note {
    min-height: 0;
    padding-right: 0;
  }

  .about-note + .about-note {
    padding-left: 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .about-note h3 {
    margin-top: 28px;
  }
}

@media (max-width: 520px) {
  .project-home-button {
    width: 44px;
    padding: 0;
  }

  .project-home-button span:last-child {
    display: none;
  }
}

@media (max-width: 600px) {
  .section-shell,
  .header-inner,
  .hero-inner,
  .hero-bottom {
    width: calc(100% - 32px);
  }

  .brand-word small {
    display: none;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 18px;
  }

  .mobile-menu {
    padding-right: 16px;
    padding-left: 16px;
  }

  .hero-lede {
    font-size: 15px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-tags {
    gap: 15px;
  }

  .scroll-cue span {
    display: none;
  }

  .manifesto h2,
  .section-heading h2,
  .ideas-heading h2,
  .about-top h2,
  .footer-callout h2 {
    font-size: clamp(2.35rem, 11.5vw, 3.6rem);
  }

  .value-row {
    margin-top: 60px;
  }

  .value-item {
    grid-template-columns: auto 1fr auto;
    padding: 20px 0;
  }

  .moving-line {
    margin-top: 70px;
  }

  .route-experience {
    margin-top: 48px;
  }

  .route-tabs {
    grid-template-columns: 1fr 1fr;
  }

  .route-tab {
    min-height: 86px;
    border-bottom: 1px solid var(--line);
  }

  .route-tab:nth-child(2) {
    border-right: 0;
  }

  .route-tab:nth-child(n + 3) {
    border-bottom: 0;
  }

  .route-tab-copy strong {
    font-size: 15px;
  }

  .route-stage {
    min-height: 540px;
  }

  .route-stage .route-gallery-copy {
    top: 25%;
    left: 4%;
    width: 65%;
    height: 64%;
  }

  .route-copy-current,
  .route-copy-buffer {
    inset: 16px;
  }

  .route-panel {
    right: 22px;
    bottom: 24px;
    left: 22px;
  }

  .route-panel h3 {
    font-size: 2rem;
  }

  .route-panel p {
    font-size: 13px;
  }

  .route-stage-mark {
    display: none;
  }

  .idea-track {
    grid-template-columns: 1fr;
    margin-top: 56px;
  }

  .idea-step {
    min-height: 0;
    padding: 26px 0;
  }

  .idea-step + .idea-step {
    padding-left: 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .idea-step h3 {
    margin-top: 36px;
  }

  .ideas-quote {
    grid-template-columns: 1fr;
    margin-top: 56px;
    padding: 32px 24px;
  }

  .ideas-quote span {
    height: 42px;
  }

  .ideas-quote p {
    font-size: 1.65rem;
  }

  .postcard-generator {
    margin-top: 48px;
  }

  .postcard-form {
    display: flex;
    padding: 24px;
  }

  .postcard-actions {
    flex-direction: column;
  }

  .postcard-actions .button {
    width: 100%;
  }

  .ai-note {
    grid-template-columns: 1fr;
    padding: 26px 22px;
  }

  .footer-callout {
    padding-bottom: 70px;
  }

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

  .footer-meta > div:last-child {
    justify-content: space-between;
  }

  .site-footer {
    padding-top: 96px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal.will-reveal {
    opacity: 1;
    transform: none;
  }
}