/* Reading, navigation and responsive primitives shared by this four-site batch.
   Per-event palettes, poster composition and topic layouts are intentional. */
:root {
  --ink: #15304a;
  --muted: #506579;
  --accent: #164cba;
  --deep: #0b2b4b;
  --pale: #eef5fa;
  --line: #c8d7e3;
  --highlight: #d9b775;
  --white: #fff;
  color-scheme: light;
}
* {
  box-sizing: border-box;
}
html {
  scroll-padding-top: 105px;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--ink);
  background: white;
  font:
    17px/1.85 "Microsoft YaHei",
    "PingFang SC",
    sans-serif;
  text-wrap: pretty;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
h1,
h2,
h3,
p,
figure {
  margin: 0;
}
h1,
h2,
h3 {
  font-weight: 750;
  line-height: 1.38;
}
h1 {
  font-size: 64px;
  letter-spacing: -1px;
}
h2 {
  font-size: 36px;
  letter-spacing: -0.7px;
}
h3 {
  font-size: 23px;
}
.container {
  width: min(1240px, calc(100% - 80px));
  margin-inline: auto;
}
.title-line {
  display: block;
}
.anchor-mark {
  display: block;
  height: 0;
  scroll-margin-top: 110px;
}
.phrase {
  display: inline-block;
}
.skip-link {
  position: fixed;
  left: 12px;
  top: -100px;
  clip-path: inset(50%);
  background: #fff;
  padding: 12px;
  z-index: 100;
}
.skip-link:focus {
  top: 8px;
  clip-path: none;
}
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size:13px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 12px;
}
.eyebrow:before {
  content: "";
  width: 26px;
  height: 3px;
  background: var(--accent);
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  min-height: 56px;
  padding: 0 25px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font-size: 16px;
  line-height: 1.4;
  font-weight: 700;
  transition:
    transform 0.16s,
    filter 0.16s;
}
.button:hover {
  filter: brightness(0.92);
  transform: translateY(-2px);
}
.button.secondary {
  color: var(--ink);
  background: transparent;
  border-color: var(--line);
}
.text-link {
  font-weight: 700;
  color: var(--accent);
  font-size: 16px;
  display: inline-flex;
  gap: 18px;
  align-items: center;
  min-height: 36px;
  border-bottom: 1px solid currentColor;
  padding-bottom: 3px;
}
.site-header {
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--line);
}
.header-row {
  min-height: 88px;
  display: flex;
  align-items: center;
  gap:16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink:1;
  min-width:0;
}
.brand img {
  width: 56px;
  height: 56px;
  object-fit: contain;
}
.brand strong {
  font-size: 18px;
  line-height: 1.4;
  display: block;
  white-space:normal;
}
.brand small {
  font-size:13px;
  color: var(--muted);
  display: block;
  margin-top: 4px;
  white-space:normal;
}
.site-nav {
  margin-left: auto;
  display: flex;
  gap: 25px;
}
.site-nav a {
  font-size: 14px;
  font-weight: 700;
  position: relative;
  padding: 29px 0;
}
.site-nav a[aria-current]:after {
  content: "";
  height: 3px;
  position: absolute;
  bottom: 18px;
  left: 0;
  right: 0;
  background: var(--accent);
}
.menu-toggle {
  display: none;
}
.header-contact .button {
  font-size:15px;
  gap: 20px;
  padding-inline:18px;
}
.hero {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: #fff;
}
.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(4, 22, 38, 0.5), transparent 80%);
}
.hero-content {
  position: relative;
  z-index: 1;
  padding: 62px 0 58px;
  min-height: 610px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}
.hero .eyebrow {
  color: #e7f3ff;
  font-size:13px;
}
.hero .eyebrow:before {
  background: var(--highlight);
}
.hero h1 {
  margin: 10px 0 22px;
  max-width: 820px;
}
.hero-slogan {
  font-size: 24px;
  font-weight: 700;
  color: var(--highlight);
  letter-spacing: 2px;
  margin-bottom: 13px;
}
.hero-intro {
  font-size: 18px;
  line-height: 1.9;
  color: #e7eff7;
  max-width: 680px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap:wrap;
}
.hero .button {
  background: white;
  border-color: white;
  color: var(--deep);
}
.hero .button.secondary {
  background: transparent;
  border-color: #c9d4dc;
  color: white;
}
.hero-bottom {
  position: relative;
  z-index: 1;
  border-top: 1px solid #ffffff44;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
  font-size: 13px;
  color: #e6eef5;
}
.hero-bottom span:last-child {
  font-weight: 700;
  color: white;
  background: #061b2b99;
  padding: 2px 10px;
}
.fact-band {
  border-bottom: 3px solid var(--accent);
  background: white;
}
.fact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.fact {
  padding: 22px 24px;
  border-right: 1px solid var(--line);
}
.fact:first-child {
  border-left: 1px solid var(--line);
}
.fact small {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
}
.fact small b {
  color: var(--accent);
  margin-right: 12px;
}
.fact strong {
  font-size: 22px;
  line-height: 1.45;
  display: block;
}
.section {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 105px;
}
.section.pale {
  background: var(--pale);
}
.section.deep {
  background: var(--deep);
  color: white;
  border-color: #ffffff33;
}
.section.deep .eyebrow {
  color: var(--highlight);
}
.section.deep .eyebrow:before {
  background: var(--highlight);
}
.section-head {
  margin-bottom: 28px;
}
.section-action {
  margin-top: 24px;
}
.section-head.with-link {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}
.overview-grid {
  display: grid;
  grid-template-columns: 0.8fr 2fr;
  gap: 70px;
}
.overview-copy {
  font-size: 19px;
  line-height: 1.95;
}
.organization-list {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 30px;
  padding-top: 20px;
  margin: 22px 0 0;
  border-top: 1px solid var(--line);
}
.organization-list dt {
  font-size: 13px;
  color: var(--muted);
}
.organization-list dd {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.8;
  margin: 4px 0 0;
}
.document-grid {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 80px;
  align-items: center;
}
.document-sheet {
  border: 1px solid var(--line);
  padding: 8px;
  background: white;
  margin: 0;
  max-width: 350px;
}
.document-sheet img {
  width: 100%;
  height: auto;
}
.document-info h2 {
  margin-bottom: 18px;
}
.document-info p {
  font-size: 16px;
  color: var(--muted);
  max-width: 600px;
}
.file-meta {
  margin: 24px 0 0;
}
.file-meta > div {
  display: grid;
  grid-template-columns: 85px 1fr;
  gap: 20px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
}
.file-meta dt {
  font-size: 14px;
  color: var(--muted);
}
.file-meta dd {
  margin: 0;
  font-weight: 700;
}
.topic-grid {
  display: grid;
  gap: 24px;
}
.topic-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border: 1px solid var(--line);
  background: white;
  color: var(--ink);
}
.topic-media {
  display: block;
  position: relative;
  width: 100%;
  aspect-ratio: 3/2;
  overflow: hidden;
}
.topic-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.topic-card:hover img {
  transform: scale(1.025);
}
.topic-copy {
  padding: 28px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  flex: 1;
  min-height: 0;
}
.topic-copy .topic-kicker {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 10px;
}
.topic-copy h3 {
  font-size: 28px;
  margin-bottom: 14px;
}
.topic-copy p {
  font-size: 16px;
  color: var(--muted);
  margin-bottom: 18px;
}
.topic-copy ul {
  list-style: none;
  padding: 16px 0 0;
  margin: 0 0 22px;
  width: 100%;
  border-top: 1px solid var(--line);
  font-size: 16px;
  line-height: 1.9;
}
.topic-copy li:before {
  content: "—";
  color: var(--accent);
  margin-right: 9px;
}
.topic-copy .text-link {
  margin-top: auto;
}
.preparation {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 55px;
}
.stage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 24px 0 18px;
  border: 1px solid var(--line);
}
.stage-grid > div {
  padding: 20px;
  border-right: 1px solid var(--line);
}
.stage-grid > div:last-child {
  border: 0;
}
.stage-grid h3 {
  font-size: 21px;
}
.stage-grid p {
  font-size: 14px;
  color: var(--muted);
  margin-top: 5px;
}
.group-note {
  font-size: 16px;
  color: var(--muted);
}
.material-preview {
  border-left: 3px solid var(--accent);
  padding-left: 30px;
}
.material-preview h3 {
  margin-bottom: 15px;
}
.bullets {
  margin: 18px 0 22px;
  padding-left: 22px;
}
.bullets li {
  padding: 5px 0;
}
.bullets li::marker {
  color: var(--accent);
}
.honor-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 36px;
}
.honor-item {
  padding-top: 24px;
  border-top: 2px solid #ffffff55;
}
.honor-item small {
  display: block;
  color: var(--highlight);
  font-size: 15px;
  margin-bottom: 20px;
}
.honor-item h3 {
  font-size: 25px;
  margin-bottom: 12px;
}
.honor-item p {
  font-size: 16px;
  color: #e0e8ef;
}
.schedule-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
}
.milestone {
  padding-top: 22px;
  border-top: 2px solid var(--accent);
  min-width: 0;
}
.date {
  display: block;
  font-size: 32px;
  line-height: 1.45;
  font-weight: 750;
  color: var(--accent);
  margin-bottom: 12px;
}
.date .phrase {
  white-space: nowrap;
}
.milestone h3 {
  font-size: 22px;
  margin-bottom: 10px;
}
.milestone p {
  font-size: 16px;
  color: var(--muted);
}
.faq-list details {
  border-top: 1px solid var(--line);
}
.faq-list details:last-child {
  border-bottom: 1px solid var(--line);
}
summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 22px;
  padding: 22px 0;
  font-weight: 700;
  font-size: 19px;
}
summary::-webkit-details-marker {
  display: none;
}
summary:after {
  content: "＋";
  color: var(--accent);
  font-size: 23px;
  font-weight: 400;
  flex-shrink: 0;
}
details[open] summary:after {
  content: "−";
}
.faq-list details p {
  font-size: 17px;
  color: var(--muted);
  max-width: 940px;
  padding: 0 38px 23px 0;
}
.current-line {
  padding: 18px 24px;
  border-left: 4px solid var(--accent);
  background: white;
  color: var(--ink);
  font-size: 17px;
  margin-top: 24px;
}
.cta {
  background: var(--accent);
  color: white;
  padding: 38px 0;
}
.cta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap:wrap;
}
.cta h2 {
  font-size: 30px;
}
.cta p {
  color: #f0f5fc;
  font-size: 16px;
  margin-top: 7px;
}
.cta .button {
  background: white;
  color: var(--accent);
  border-color: white;
  flex-shrink: 0;
}
footer {
  background: var(--deep);
  color: #e9f0f5;
  padding: 34px 0;
}
.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 35px;
}
.footer-row > div {
  min-width: 0;
}
.footer-row strong {
  font-size: 17px;
}
.footer-row p {
  font-size: 13px;
  color: #d7e0e6;
  margin-top: 6px;
}
.footer-row nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 14px;
}
.mobile-contact {
  display: none;
  gap:0;
  padding:10px 20px calc(10px + env(safe-area-inset-bottom));
}
.inner-hero {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: white;
}
.inner-hero:before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, var(--deep) 35%, transparent),
    url("hero-small.webp") center 45% / cover;
  opacity: 0.65;
}
.inner-content {
  position: relative;
  padding: 28px 0 40px;
}
.breadcrumb {
  font-size:13px;
  color: #e0eaf3;
  margin-bottom: 22px;
}
.breadcrumb span {
  padding: 0 10px;
}
.inner-hero .eyebrow {
  color: #edf4fa;
}
.inner-hero .eyebrow:before {
  background: var(--highlight);
}
.inner-hero h1 {
  font-size: 43px;
  margin-bottom: 14px;
}
.inner-intro {
  max-width: 860px;
  color: #edf3f7;
  font-size: 17px;
}
.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 230px;
  gap: 38px;
  align-items: start;
}
.content-main {
  min-width: 0;
}
.info-block {
  padding: 30px;
  background: white;
  border-top: 3px solid var(--accent);
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
  scroll-margin-top: 116px;
}
.info-block:last-child {
  margin-bottom: 0;
}
.info-block h2 {
  font-size: 28px;
  margin-bottom: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.info-block p {
  color: var(--muted);
}
.info-block p + p {
  margin-top: 16px;
}
.info-block .stage-grid {
  margin-top: 0;
}
.info-block .file-meta dd {
  font-size: 16px;
  font-weight: 400;
  color: var(--muted);
}
.aside {
  background: white;
  border-top: 3px solid var(--accent);
  padding: 24px;
  position: sticky;
  top: 114px;
}
.aside strong {
  font-size: 18px;
  display: block;
}
.aside small {
  font-size: 13px;
  color: var(--muted);
}
.aside nav {
  margin: 18px 0;
}
.aside nav a {
  display: block;
  font-size: 15px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}
.aside .button {
  width: 100%;
  padding-inline: 15px;
  gap: 15px;
}
.steps {
  list-style: none;
  padding: 0;
  margin: 0;
}
.steps li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.steps li:last-child {
  border: 0;
  padding-bottom: 0;
}
.steps b {
  font-size: 30px;
  color: var(--accent);
  line-height: 1.4;
}
.steps h3 {
  font-size: 21px;
  margin-bottom: 8px;
}
.steps p {
  font-size: 16px;
}
.project-index {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 22px;
  margin-bottom: 28px;
}
.project-index a {
  font-size: 15px;
  color: var(--accent);
  border-bottom: 1px solid currentColor;
}
.project-detail {
  display: grid;
  grid-template-columns: 245px 1fr;
  gap: 36px;
}
.project-detail h2 {
  border: 0;
  padding: 0;
  margin: 8px 0 12px;
  font-size: 27px;
}
.project-detail small {
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
}
.project-detail p {
  font-size: 17px;
}
.project-detail .detail-body p + p {
  font-size: 16px;
  padding-top: 14px;
  margin-top: 14px;
  border-top: 1px solid var(--line);
}
.full-timeline {
  list-style: none;
  padding: 0;
  margin: 0;
}
.full-timeline li {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 45px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}
.full-timeline li:first-child {
  border-top: 3px solid var(--accent);
}
.full-timeline h2 {
  font-size: 25px;
  margin: 3px 0 12px;
}
.full-timeline p {
  font-size: 17px;
  color: var(--muted);
}
.timeline-note {
  color: var(--muted);
  font-size: 16px;
  margin-bottom: 24px;
}
.error-page {
  text-align: center;
  padding: 100px 0;
}
.error-page h1 {
  font-size: 42px;
  margin-bottom: 18px;
}
.error-page p {
  margin-bottom: 28px;
}
/* Independent visual systems and project compositions; not override patches. */
.theme-space {
  --ink: #202a48;
  --muted: #55627c;
  --accent: #354d9e;
  --deep: #101c48;
  --pale: #f0f3fa;
  --line: #cbd2e4;
  --highlight: #ead09c;
}
.theme-space .hero-content {
  min-height: 630px;
}
.theme-space .hero-slogan {
  letter-spacing: 4px;
}
.theme-space .topic-grid {
  grid-template-columns: 1fr;
}
.theme-space .topic-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.theme-space .topic-media {
  aspect-ratio: auto;
  height: 100%;
  min-height: 380px;
}
.theme-space .topic-card:nth-child(2) .topic-media {
  order: 2;
}
.theme-space .topic-copy {
  padding: 36px 40px;
}
.theme-space .topic-copy h3 {
  font-size: 34px;
}
.theme-space .hero-bottom {
  border-color: #b6c7ee55;
}
.theme-robot {
  --ink: #103541;
  --muted: #4c6871;
  --accent: #08788b;
  --deep: #07384b;
  --pale: #eef8f9;
  --line: #bad5dc;
  --highlight: #a7e8e9;
}
.theme-robot .hero h1 {
  font-size: 51px;
  max-width: 850px;
  line-height: 1.42;
}
.theme-robot .hero-content {
  min-height: 610px;
}
.theme-robot .topic-grid {
  grid-template-columns: 1fr 1fr;
}
.theme-robot .topic-copy {
  min-height: 320px;
}
.theme-robot .topic-copy h3 {
  font-size: 32px;
}
.theme-robot .hero-image {
  object-position: 70% center;
}
.theme-robot .fact-band {
  background: #f7fcfc;
}
.theme-robot .brand img {
  width: 60px;
  height: 54px;
}
.theme-safety {
  --ink: #14344f;
  --muted: #536677;
  --accent: #ac4315;
  --deep: #12334f;
  --pale: #fff6ed;
  --line: #dbcbbd;
  --highlight: #ffd0a7;
}
.theme-safety .topic-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.theme-safety .topic-copy h3 {
  font-size: 27px;
}
.theme-safety .hero h1 {
  font-size: 59px;
}
.theme-safety .hero-shade {
  background: linear-gradient(90deg, #0e294b66, transparent 85%);
}
.theme-safety .fact-band {
  border-color: #cb692d;
}
.theme-safety .current-line {
  border-color: #b64b1c;
}
.theme-defense {
  --ink: #213e33;
  --muted: #576a5d;
  --accent: #326046;
  --deep: #173e32;
  --pale: #f4f1e9;
  --line: #cdcabb;
  --highlight: #e1c697;
}
.theme-defense .topic-grid {
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.theme-defense .topic-card {
  display: grid;
  grid-template-columns: 0.9fr 1.2fr;
}
.theme-defense .topic-media {
  aspect-ratio: auto;
  height: 100%;
  min-height: 325px;
}
.theme-defense .topic-copy {
  padding: 26px;
}
.theme-defense .topic-copy h3 {
  font-size: 23px;
}
.theme-defense .topic-copy .topic-kicker {
  font-size: 12px;
}
.theme-defense .topic-copy p {
  font-size: 15px;
}
.theme-defense .topic-copy ul {
  font-size: 15px;
}
.theme-defense .hero-slogan {
  color: #ead5ae;
}
.theme-defense .hero-content {
  min-height: 605px;
}
.theme-defense .brand img {
  width: 58px;
  height: 58px;
}
@media (min-width: 1600px) {
  .hero-content {
    min-height: 650px;
  }
  .theme-space .hero-content {
    min-height: 680px;
  }
  h1 {
    font-size: 70px;
  }
  .theme-robot .hero h1 {
    font-size: 56px;
  }
}
@media (max-width: 1190px) {
  .header-row {
    gap:16px;
  }
  .brand strong {
    font-size: 16px;
  white-space:normal;
}
  .brand img {
    width: 48px;
    height: 48px;
  }
  .site-nav {
    gap: 18px;
  }
  .site-nav a {
    font-size: 13px;
  }
  .header-contact .button {
    padding-inline:18px;
    font-size:15px;
  }
  .hero h1 {
    font-size: 56px;
  }
  .theme-robot .hero h1 {
    font-size: 45px;
  }
  .theme-safety .hero h1 {
    font-size: 53px;
  }
  .overview-grid {
    gap: 42px;
  }
  .document-grid {
    grid-template-columns: 310px 1fr;
    gap: 45px;
  }
  .theme-defense .topic-card {
    display: flex;
    flex-direction: column;
  }
  .theme-defense .topic-media {
    aspect-ratio: 3/2;
    min-height: 0;
    height: auto;
  }
  .theme-defense .topic-copy {
    flex: 1;
  }
  .stage-grid > div {
    padding: 15px;
  }
  .stage-grid p {
    font-size: 13px;
  }
  .preparation {
    gap: 35px;
  }
  .fact {
    padding: 20px 18px;
  }
  .fact strong {
    font-size: 20px;
  }
  .theme-safety .topic-copy {
    padding: 24px;
  }
  .theme-safety .topic-copy h3 {
    font-size: 25px;
  }
}
@media (max-width: 1190px) {
  .container {
    width: calc(100% - 48px);
  }
  .header-row {
    min-height: 78px;
    position: relative;
  gap:16px;
}
  .menu-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 44px;
    padding: 0 14px;
    margin-left: auto;
    border: 1px solid var(--line);
    background: white;
    font-size: 14px;
  }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: -24px;
    right: -24px;
    margin: 0;
    padding: 10px 24px 18px;
    background: white;
    border-bottom: 2px solid var(--accent);
    box-shadow: 0 12px 20px #072c3a15;
    flex-wrap: wrap;
    gap: 0;
  }
  .site-nav.open {
    display: flex;
  }
  .site-nav a {
    width: 50%;
    padding: 13px;
    font-size: 16px;
  }
  .site-nav a[aria-current]:after {
    left: 13px;
    right: auto;
    width: 28px;
    bottom: 5px;
  }
  .header-contact {
    display: none;
  }
  .hero h1 {
    font-size: 53px;
  }
  .theme-robot .hero h1 {
    font-size: 41px;
  }
  .theme-safety .hero h1 {
    font-size: 49px;
  }
  .hero-content,
  .theme-robot .hero-content,
  .theme-defense .hero-content {
    min-height: 550px;
    padding-block: 45px;
  }
  .theme-space .hero-content {
    min-height: 570px;
  }
  .hero-intro {
    max-width: 610px;
  }
  .overview-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .document-grid {
    grid-template-columns: 280px 1fr;
    gap: 30px;
  }
  .document-info h2 {
    font-size: 30px;
  }
  .preparation {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .material-preview {
    border: 0;
    border-top: 1px solid var(--line);
    padding: 25px 0 0;
  }
  .content-layout {
    grid-template-columns: 1fr;
  }
  .aside {
    display: none;
  }
  .project-detail {
    grid-template-columns: 205px 1fr;
    gap: 26px;
  }
  .honor-grid {
    gap: 25px;
  }
  .honor-item h3 {
    font-size: 23px;
  }
  .full-timeline li {
    grid-template-columns: 310px 1fr;
    gap: 30px;
  }
  .date {
    font-size: 28px;
  }
  .theme-space .topic-copy {
    padding: 28px;
  }
  .theme-space .topic-copy h3 {
    font-size: 29px;
  }
  .theme-space .topic-media {
    min-height: 340px;
  }
  .theme-safety .topic-grid {
    grid-template-columns: 1fr;
  }
  .theme-safety .topic-card {
    display: grid;
    grid-template-columns: 0.9fr 1.2fr;
  }
  .theme-safety .topic-media {
    aspect-ratio: auto;
    height: 100%;
    min-height: 280px;
  }
  .footer-row {
    flex-direction: column;
    gap: 20px;
  }
  .cta h2 {
    font-size: 27px;
  }
}
@media (max-width: 640px) {
  html {
    scroll-padding-top: 88px;
  }
  body {
    font-size: 16px;
  }
  .container {
    width: calc(100% - 40px);
  }
  h2 {
    font-size: 28px;
    letter-spacing: 0;
  }
  h3 {
    font-size: 21px;
  }
  .header-row {
    min-height: 74px;
    gap:16px;
  }
  .brand {
    gap: 10px;
  min-width:0;
  flex-shrink:1;
}
  .brand strong {
    font-size: 15px;
  white-space:normal;
}
  .brand small {
    font-size:13px;
    margin-top: 3px;
  white-space:normal;
}
  .brand img,
  .theme-robot .brand img,
  .theme-defense .brand img {
    width: 44px;
    height: 44px;
  }
  .menu-toggle {
    font-size: 13px;
    gap: 9px;
    padding: 0 11px;
  }
  .site-nav {
    left: -20px;
    right: -20px;
    padding-inline: 20px;
  }
  .hero-content,
  .theme-space .hero-content,
  .theme-robot .hero-content,
  .theme-defense .hero-content {
    min-height: 570px;
    padding: 32px 0 175px;
    justify-content: flex-start;
  }
  .hero-image {
    object-position: 90% center;
  }
  .theme-robot .hero-image {
    object-position: 90% center;
  }
  .hero-shade,
  .theme-safety .hero-shade {
    background: linear-gradient(
      180deg,
      #061829f0,
      #061829c7 53%,
      #06182900 90%
    );
  }
  .hero .eyebrow {
    font-size:13px;
    letter-spacing: 0;
    gap: 9px;
    margin-bottom: 16px;
  }
  .hero .eyebrow:before {
    width: 18px;
  }
  .hero h1,
  .theme-safety .hero h1 {
    font-size: 35px;
    letter-spacing: 0;
    line-height: 1.4;
    margin: 0 0 18px;
  }
  .theme-robot .hero h1 {
    font-size: 29px;
    line-height: 1.45;
    max-width: 100%;
  }
  .hero-slogan,
  .theme-space .hero-slogan {
    font-size: 19px;
    letter-spacing: 1px;
    margin-bottom: 12px;
  }
  .hero-intro {
    font-size: 16px;
    line-height: 1.85;
    max-width: 100%;
  }
  .hero-actions {
    gap: 10px;
    margin-top: 22px;
    flex-wrap:wrap;
  }
  .hero-actions .button {
    padding: 0 18px;
    gap: 16px;
    font-size: 15px;
  }
  .hero-bottom {
    font-size: 12px;
    padding: 12px 0;
    line-height: 1.7;
  }
  .hero-bottom span:last-child {
    display: none;
  }
  .fact-band .container {
    width: 100%;
  }
  .fact-grid {
    grid-template-columns: 1fr 1fr;
  }
  .fact {
    padding: 17px 20px;
    border-bottom: 1px solid var(--line);
  }
  .fact:first-child {
    border-left: 0;
  }
  .fact:nth-child(2n) {
    border-right: 0;
  }
  .fact:nth-child(n + 3) {
    border-bottom: 0;
  }
  .fact small {
    font-size: 12px;
    margin-bottom: 6px;
  }
  .fact small b {
    margin-right: 8px;
  }
  .fact strong {
    font-size: 19px;
  }
  .section {
    padding: 36px 0;
    scroll-margin-top: 90px;
  }
  .eyebrow {
    font-size:13px;
    letter-spacing: 0;
    margin-bottom: 10px;
  }
  .section-head {
    margin-bottom: 24px;
  }
  .section-head.with-link {
    display: block;
  }
  .section-head.with-link .text-link {
    margin-top: 15px;
  }
  .overview-copy {
    font-size: 17px;
    line-height: 1.9;
  }
  .organization-list {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 20px;
    padding-top: 18px;
  }
  .organization-list dd {
    font-size: 16px;
  }
  .document-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  .document-info {
    order: -1;
  }
  .document-info h2 {
    font-size: 28px;
    margin-bottom: 15px;
  }
  .document-sheet {
    width: 100%;
    max-width: 360px;
    margin-inline: auto;
  }
  .file-meta {
    margin-top: 17px;
  }
  .file-meta > div {
    grid-template-columns: 76px 1fr;
    gap: 15px;
    padding: 11px 0;
  }
  .file-meta dt {
    font-size: 13px;
  }
  .file-meta dd {
    font-size: 15px;
  }
  .topic-grid,
  .theme-robot .topic-grid,
  .theme-defense .topic-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .topic-card,
  .theme-space .topic-card,
  .theme-safety .topic-card,
  .theme-defense .topic-card {
    display: flex;
    flex-direction: column;
  }
  .topic-media,
  .theme-space .topic-media,
  .theme-safety .topic-media,
  .theme-defense .topic-media {
    aspect-ratio: 3/2;
    height: auto;
    min-height: 0;
  }
  .theme-space .topic-card:nth-child(2) .topic-media {
    order: 0;
  }
  .topic-copy,
  .theme-space .topic-copy,
  .theme-defense .topic-copy,
  .theme-safety .topic-copy {
    padding: 24px;
    min-height: 0;
  }
  .topic-copy h3,
  .theme-space .topic-copy h3,
  .theme-robot .topic-copy h3,
  .theme-defense .topic-copy h3,
  .theme-safety .topic-copy h3 {
    font-size: 25px;
  }
  .topic-copy p,
  .theme-defense .topic-copy p {
    font-size: 16px;
  }
  .topic-copy ul,
  .theme-defense .topic-copy ul {
    font-size: 16px;
  }
  .topic-copy .topic-kicker,
  .theme-defense .topic-copy .topic-kicker {
    font-size: 13px;
  }
  .stage-grid {
    grid-template-columns: 1fr;
    margin-top: 22px;
  }
  .stage-grid > div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    display: flex;
    gap: 23px;
    align-items: center;
    padding: 16px 18px;
  }
  .stage-grid > div:last-child {
    border: 0;
  }
  .stage-grid h3 {
    font-size: 20px;
    min-width: 76px;
  }
  .stage-grid p {
    font-size: 15px;
    margin: 0;
  }
  .group-note {
    font-size: 16px;
  }
  .honor-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .honor-item {
    padding-top: 20px;
  }
  .honor-item small {
    margin-bottom: 9px;
  }
  .honor-item h3 {
    font-size: 23px;
    margin-bottom: 9px;
  }
  .schedule-grid {
    grid-template-columns: 1fr;
    gap: 27px;
  }
  .date {
    font-size: 28px;
    margin-bottom: 12px;
  }
  .milestone h3 {
    font-size: 21px;
  }
  .current-line {
    font-size: 16px;
    padding: 16px 18px;
  }
  .faq-list details p {
    font-size: 16px;
    padding-right: 10px;
  }
  summary {
    font-size: 18px;
    padding: 20px 0;
  }
  .cta {
    padding: 30px 0;
  }
  .cta-row {
    display: block;
  flex-wrap:wrap;
}
  .cta h2 {
    font-size: 25px;
  }
  .cta .button {
    margin-top: 22px;
    width: 100%;
  }
  footer {
    padding: 28px 0 112px;
  }
  .footer-row strong {
    font-size: 16px;
  }
  .footer-row nav {
    font-size: 14px;
    gap: 12px 20px;
  }
  .mobile-contact {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 25;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap:0;
    padding:10px 20px calc(10px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--line);
    background: white;
  }
  .mobile-contact p {
    font-size: 12px;
    line-height: 1.6;
    color: var(--muted);
  }
  .mobile-contact strong {
    display: block;
    font-size: 14px;
    line-height: 1.5;
    color: var(--ink);
  }
  .mobile-contact .button {
    min-height: 56px;
    padding: 0 24px;
    gap: 18px;
  }
  .inner-content {
    padding: 23px 0 30px;
  }
  .breadcrumb {
    font-size:13px;
    margin-bottom: 18px;
  }
  .inner-hero .eyebrow {
    font-size: 12px;
    line-height: 1.7;
    align-items: flex-start;
  }
  .inner-hero .eyebrow:before {
    margin-top: 9px;
    flex-shrink: 0;
  }
  .inner-hero h1 {
    font-size: 31px;
    letter-spacing: 0;
    margin-bottom: 13px;
  }
  .inner-intro {
    font-size: 16px;
  }
  .info-block {
    padding: 22px 20px;
    margin-bottom: 20px;
    scroll-margin-top: 96px;
  }
  .info-block h2 {
    font-size: 25px;
    padding-bottom: 15px;
    margin-bottom: 17px;
  }
  .info-block .stage-grid > div {
    display: block;
  }
  .info-block .stage-grid p {
    margin-top: 5px;
  }
  .steps li {
    grid-template-columns: 37px 1fr;
    gap: 12px;
    padding: 22px 0;
  }
  .steps b {
    font-size: 28px;
  }
  .steps h3 {
    font-size: 20px;
  }
  .project-detail {
    grid-template-columns: 1fr;
    gap: 11px;
  }
  .project-detail h2 {
    font-size: 25px;
    margin-bottom: 0;
    padding-bottom: 0;
  }
  .project-detail p {
    font-size: 16px;
  }
  .project-index {
    gap: 13px 20px;
  }
  .project-index a {
    font-size: 16px;
  }
  .full-timeline li {
    grid-template-columns: 1fr;
    gap: 5px;
    padding: 26px 0;
  }
  .full-timeline h2 {
    font-size: 23px;
  }
  .full-timeline p {
    font-size: 16px;
  }
  .error-page {
    padding: 70px 0;
  }
  .error-page h1 {
    font-size: 34px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    transition: none !important;
    animation: none !important;
  }
}