/* Overview-only additions for the August 2026 content revision. */

@media (min-width: 1121px) {
  .overview-page .overview-hero {
    padding: clamp(26px, 3.4vh, 36px) 0 30px;
  }

  .overview-page .overview-hero-shell {
    width: min(1440px, calc(100% - 160px));
    grid-template-columns: minmax(430px, 0.84fr) minmax(520px, 1.16fr);
    grid-template-areas:
      "heading heading"
      "copy art"
      "actions credits"
      "affiliations affiliations";
    column-gap: clamp(34px, 4vw, 72px);
    row-gap: clamp(20px, 2.6vh, 30px);
  }

  .overview-page .overview-hero-heading {
    align-self: start;
  }

  .overview-page .overview-hero h1 {
    margin-top: 10px;
    font-size: clamp(48px, 4.2vw, 64px);
    line-height: 0.98;
    letter-spacing: -0.045em;
  }

  .overview-page .overview-deck {
    max-width: 650px;
    margin-top: 8px;
    font-size: clamp(20px, 1.7vw, 25px);
    line-height: 1.22;
  }

  .overview-page .overview-description,
  .overview-page .overview-intro {
    max-width: 650px;
    font-size: 13.5px;
    line-height: 1.46;
  }

  .overview-page .overview-description {
    margin-top: 11px;
  }

  .overview-page .overview-intro {
    margin-top: 7px;
  }

  .overview-page .overview-scope {
    max-width: 650px;
    margin-top: 8px;
    font-size: 12.5px;
    line-height: 1.35;
  }

  .overview-page .overview-hero-art {
    min-height: 230px;
    margin: 0;
    align-self: center;
    justify-content: center;
  }

  .overview-page .overview-hero-art::before {
    width: min(88%, 560px);
  }

  .overview-page .overview-hero-illustration {
    width: min(124%, 830px);
    max-width: none;
    transform: none;
    filter: drop-shadow(0 16px 24px rgba(12, 47, 80, 0.13));
  }

  .overview-page .overview-actions {
    grid-area: actions;
    align-self: center;
    margin: 0;
    gap: 10px;
  }

  .overview-page .overview-actions a {
    min-height: 44px;
    padding: 0 21px;
    border-radius: 5px;
    font-size: 13.5px;
    box-shadow: none;
  }

  .overview-page .overview-hero-credits {
    align-self: center;
  }

  .overview-page .overview-credit-list {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 22px;
    padding: 0 0 0 22px;
    border-top: 0;
    border-left: 1px solid var(--line);
  }

  .overview-page .overview-credit-item {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 11px;
  }

  .overview-page .overview-credit-item + .overview-credit-item {
    padding-left: 22px;
    border-left: 1px solid var(--line);
  }

  .overview-page .overview-credit-icon {
    width: 46px;
    height: 46px;
  }

  .overview-page .overview-credit-icon img {
    width: 42px;
    height: 42px;
  }

  .overview-page .overview-organizer-logos {
    min-width: 62px;
    gap: 6px;
  }

  .overview-page .overview-organizer-logos img:first-child {
    width: 34px;
    height: 34px;
  }

  .overview-page .overview-organizer-logos img:last-child {
    width: 22px;
    height: 22px;
  }

  .overview-page .overview-credit-label {
    font-size: 10px;
    line-height: 1.2;
    text-transform: uppercase;
  }

  .overview-page .overview-credit-item strong {
    margin-top: 2px;
    font-size: clamp(13px, 1.05vw, 15px);
    line-height: 1.22;
  }

  .overview-page .overview-track-link {
    margin-top: 3px;
    font-size: 10.5px;
  }

  .overview-page .overview-hero-affiliations {
    margin-top: 7px;
    padding-top: 13px;
    border-top: 1px solid var(--line);
  }

  .overview-page .overview-hero-affiliations h2 {
    margin-bottom: 10px;
    font-size: 17px;
  }

  .overview-page .overview-hero-affiliation-list {
    gap: 22px clamp(26px, 4vw, 58px);
  }

  .overview-page .overview-hero-affiliation-list li {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 12px;
  }

  .overview-page .overview-sponsor-copy strong {
    font-size: 13px;
    line-height: 1.25;
  }

  .overview-page .overview-sponsor-copy small {
    margin-top: 2px;
    font-size: 10.5px;
    line-height: 1.3;
  }
}

/* Keep the reference composition on tablet-sized captures while reserving
   the stacked layout for genuinely narrow phones. */
@media (min-width: 721px) and (max-width: 1120px) {
  .overview-page .overview-hero {
    padding: 5px 0 10px;
  }

  .overview-page .overview-hero-shell {
    width: min(920px, calc(100% - 40px));
    grid-template-columns: minmax(0, 0.98fr) minmax(0, 1.02fr);
    grid-template-areas:
      "heading heading"
      "copy art"
      "actions credits"
      "affiliations affiliations";
    column-gap: 12px;
    row-gap: 8px;
  }

  .overview-page .overview-hero h1 {
    margin-top: 8px;
    font-size: clamp(42px, 5.1vw, 54px);
    line-height: 0.98;
  }

  .overview-page .overview-deck {
    max-width: 390px;
    margin-top: 7px;
    font-size: clamp(16px, 2.1vw, 18px);
    line-height: 1.2;
  }

  .overview-page .overview-description,
  .overview-page .overview-intro {
    max-width: 390px;
    font-size: 11px;
    line-height: 1.34;
  }

  .overview-page .overview-description {
    margin-top: 9px;
  }

  .overview-page .overview-intro {
    margin-top: 6px;
  }

  .overview-page .overview-scope {
    max-width: 390px;
    margin-top: 7px;
    font-size: 10px;
    line-height: 1.3;
    white-space: normal;
  }

  .overview-page .overview-hero-art {
    min-height: 180px;
    margin: 0;
    justify-content: center;
  }

  .overview-page .overview-hero-art::before {
    width: min(92%, 430px);
  }

  .overview-page .overview-hero-illustration {
    width: 460px;
    max-width: none;
    transform: none;
  }

  .overview-page .overview-actions {
    align-self: start;
    margin: 4px 0 0;
    gap: 9px;
  }

  .overview-page .overview-actions a {
    min-height: 38px;
    padding: 0 15px;
    border-radius: 4px;
    font-size: 12px;
  }

  .overview-page .overview-hero-credits {
    align-self: center;
    width: calc(100% + 90px);
    margin-left: -90px;
  }

  .overview-page .overview-credit-list {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 12px;
    padding: 0 0 0 12px;
    border-top: 0;
    border-left: 1px solid var(--line);
  }

  .overview-page .overview-credit-item {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 7px;
  }

  .overview-page .overview-credit-item + .overview-credit-item {
    padding-left: 12px;
    border-left: 1px solid var(--line);
  }

  .overview-page .overview-credit-icon {
    width: 36px;
    height: 36px;
  }

  .overview-page .overview-credit-icon img {
    width: 33px;
    height: 33px;
  }

  .overview-page .overview-organizer-logos {
    min-width: 47px;
    gap: 4px;
  }

  .overview-page .overview-organizer-logos img:first-child {
    width: 27px;
    height: 27px;
  }

  .overview-page .overview-organizer-logos img:last-child {
    width: 18px;
    height: 18px;
  }

  .overview-page .overview-credit-label {
    font-size: 8px;
  }

  .overview-page .overview-credit-item strong {
    margin-top: 1px;
    font-size: 11px;
    line-height: 1.18;
  }

  .overview-page .overview-credit-organizer strong {
    font-size: 10px;
    white-space: nowrap;
  }

  .overview-page .overview-track-link {
    margin-top: 2px;
    font-size: 8.5px;
  }

  .overview-page .overview-hero-affiliations {
    margin-top: 4px;
    padding-top: 9px;
  }

  .overview-page .overview-hero-affiliations h2 {
    margin-bottom: 7px;
    font-size: 14px;
  }

  .overview-page .overview-hero-affiliation-list {
    gap: 16px 22px;
  }

  .overview-page .overview-hero-affiliation-list li {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 8px;
  }

  .overview-page .overview-sponsor-copy strong {
    font-size: 11px;
    line-height: 1.2;
  }

  .overview-page .overview-sponsor-copy small {
    margin-top: 1px;
    font-size: 9px;
    line-height: 1.25;
  }
}

.overview-page .overview-scope {
  max-width: 610px;
  margin: 13px 0 0;
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 680;
  line-height: 1.5;
}

.overview-page .overview-scope strong {
  color: var(--ink);
}

.overview-page .overview-credit-list {
  padding-top: 0;
  border-top: 0;
  border-left: 0;
}

.overview-page .overview-organizer-logos {
  width: 74px;
  min-width: 74px;
  flex: 0 0 74px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.overview-page .overview-organizer-logos img {
  display: block;
  object-fit: contain;
}

.overview-page .overview-organizer-logos img:first-child {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  mix-blend-mode: multiply;
}

.overview-page .overview-organizer-logos img:last-child {
  width: 25px;
  height: 25px;
}

.overview-page .overview-credit-organizer {
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 11px;
}

.overview-page .overview-credit-organizer strong {
  white-space: nowrap;
}

.overview-page .overview-hero-affiliation-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  justify-items: stretch;
  gap: 22px clamp(30px, 5vw, 72px);
}

.overview-page .overview-hero-affiliation-list li {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
}

.overview-page .overview-supporter-logo-wrap {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
}

.overview-page .overview-supporter-logo {
  display: block;
  max-width: 58px;
  max-height: 58px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.overview-page .overview-supporter-logo--meituan {
  width: 54px;
  height: 54px;
}

.overview-page .overview-supporter-logo--cas {
  mix-blend-mode: multiply;
}

.overview-page .overview-sponsor-copy,
.overview-page .overview-sponsor-copy strong,
.overview-page .overview-sponsor-copy small {
  min-width: 0;
  display: block;
}

.overview-page .overview-sponsor-copy strong {
  color: var(--ink);
  font-size: 15px;
  font-weight: 760;
  line-height: 1.3;
}

.overview-page .overview-sponsor-copy small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.4;
}

.overview-page .overview-challenge-figure {
  width: min(94%, 840px);
  margin: 28px auto 0;
  transform: none;
}

.overview-page .overview-workflow-scroll {
  max-width: 100%;
  overflow-x: auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  scrollbar-color: #9ebbd3 #eef4f8;
  scrollbar-width: thin;
}

.overview-page .overview-workflow-scroll img {
  width: 100%;
  max-width: 100%;
  display: block;
  height: auto;
}

@media (min-width: 1121px) {
  .overview-page .overview-hero {
    min-height: calc(100svh - var(--header-height));
    padding: clamp(38px, 4.6vh, 56px) 0 44px;
  }

  .overview-page .overview-hero-shell {
    row-gap: clamp(28px, 3.6vh, 42px);
  }

  .overview-page .overview-description,
  .overview-page .overview-intro {
    font-size: 15px;
    line-height: 1.62;
  }

  .overview-page .overview-description {
    margin-top: 14px;
  }

  .overview-page .overview-intro {
    margin-top: 11px;
  }

  .overview-page .overview-scope {
    width: calc(100% + 72px);
    max-width: none;
    margin-top: 14px;
    font-size: clamp(15px, 1vw, 17px);
    line-height: 1.45;
    white-space: nowrap;
  }

  .overview-page .overview-credit-list {
    padding: 0;
    border-top: 0;
    border-left: 0;
  }
}

@media (min-width: 721px) and (max-width: 1120px) {
  .overview-page .overview-scope {
    font-size: 12px;
    line-height: 1.5;
  }

  .overview-page .overview-credit-list {
    border-top: 0;
    border-left: 0;
  }
}

@media (max-width: 960px) {
  .overview-page .overview-hero-affiliation-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 28px;
  }

  .overview-page .overview-hero-affiliation-list li {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 12px;
  }

  .overview-page .overview-supporter-logo-wrap {
    width: 56px;
    height: 56px;
  }
}

@media (max-width: 720px) {
  .overview-page .overview-description,
  .overview-page .overview-intro,
  .overview-page .overview-scope {
    font-size: 15px;
    line-height: 1.65;
  }

  .overview-page .overview-hero-affiliation-list {
    grid-template-columns: 1fr;
    gap: 17px;
  }

  .overview-page .overview-hero-affiliation-list li {
    grid-template-columns: 50px minmax(0, 1fr);
    gap: 14px;
  }

  .overview-page .overview-supporter-logo-wrap {
    width: 50px;
    height: 50px;
  }

  .overview-page .overview-challenge-figure {
    width: calc(100% - 16px);
  }

  .overview-page .overview-supporter-logo {
    max-width: 48px;
    max-height: 48px;
  }
}

@media (min-width: 1280px) {
  .overview-page .overview-hero-illustration {
    width: min(132%, 880px);
    transform: translateX(-3.5%);
  }
}

@media (min-width: 1600px) {
  .overview-page .overview-hero-shell {
    width: min(1720px, calc(100% - clamp(96px, 8vw, 160px)));
    grid-template-columns: minmax(560px, 0.9fr) minmax(680px, 1.1fr);
    column-gap: clamp(64px, 5vw, 96px);
  }

  .overview-page .overview-hero h1 {
    font-size: clamp(64px, 3.2vw, 76px);
  }

  .overview-page .overview-deck {
    max-width: 720px;
    font-size: clamp(25px, 1.2vw, 30px);
  }

  .overview-page .overview-description,
  .overview-page .overview-intro {
    max-width: 720px;
    font-size: clamp(15px, 0.75vw, 18px);
  }

  .overview-page .overview-scope {
    font-size: clamp(15px, 0.72vw, 17px);
  }

  .overview-page .overview-hero-illustration {
    width: min(132%, 1020px);
  }
}

@media (min-width: 2200px) {
  .overview-page .overview-hero-shell {
    width: min(2080px, 82vw);
    grid-template-columns: minmax(680px, 0.9fr) minmax(840px, 1.1fr);
    column-gap: clamp(80px, 5vw, 120px);
  }

  .overview-page .overview-hero-illustration {
    width: min(132%, 1240px);
  }
}

/* Keep the cover composition on the same horizontal text grid as Submission. */
.overview-page .overview-shell,
.overview-page .overview-hero-shell {
  width: min(var(--max-width), calc(100% - (var(--page-gutter) * 2)));
}

.overview-page .overview-description,
.overview-page .overview-intro {
  max-width: var(--content-text-width);
  font-size: var(--content-body-size);
  line-height: var(--content-body-leading);
}

@media (max-width: 720px) {
  .overview-page .overview-hero-affiliation-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* Give the opening copy a little more room so the lower action and partner
   rows retain comfortable space. Partner and supporter marks share one visual
   frame, with extra separation between the Nankai and Microsoft marks. */
@media (min-width: 1121px) {
  .overview-page .overview-hero-shell {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  }

  .overview-page .overview-deck,
  .overview-page .overview-description,
  .overview-page .overview-intro {
    max-width: 800px;
  }

  .overview-page .overview-credit-item {
    grid-template-columns: 58px minmax(0, 1fr);
  }

  .overview-page .overview-credit-icon,
  .overview-page .overview-credit-icon img {
    width: 50px;
    height: 50px;
  }

  .overview-page .overview-credit-organizer {
    grid-template-columns: 120px minmax(0, 1fr);
  }

  .overview-page .overview-organizer-logos {
    width: 112px;
    min-width: 112px;
    flex-basis: 112px;
    gap: 12px;
  }

  .overview-page .overview-organizer-logos img:first-child,
  .overview-page .overview-organizer-logos img:last-child {
    width: 50px;
    height: 50px;
    object-fit: contain;
  }

  .overview-page .overview-organizer-logos img:last-child {
    width: 46px;
    height: 46px;
  }
}

/* Match the vertical chapter rhythm used by the rest of the site. */
.overview-page .overview-section {
  padding-top: var(--subsection-gap);
}

.overview-page .overview-last-section {
  padding-bottom: var(--subsection-gap);
}

/* Keep the English event name typographically identical after switching the
   surrounding page to the Chinese font stack. */
.overview-page .overview-hero h1 {
  margin-top: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

/* The Chinese cover is a complete first screen on desktop-sized viewports.
   Border-box keeps its padding inside the available viewport height. */
body[data-language="zh"].overview-page .overview-hero {
  box-sizing: border-box;
  min-height: calc(100svh - var(--header-height));
}

/* On roomy displays, use the available first-screen height as breathing room
   inside the composition instead of leaving it as an empty strip below it. */
@media (min-width: 1600px) and (min-height: 900px) {
  body[data-language="zh"].overview-page .overview-hero {
    align-items: center;
  }

  body[data-language="zh"].overview-page .overview-hero-shell {
    row-gap: clamp(34px, 3.9vh, 44px);
  }

  body[data-language="zh"].overview-page .overview-deck {
    line-height: 1.3;
  }

  body[data-language="zh"].overview-page .overview-description,
  body[data-language="zh"].overview-page .overview-intro {
    line-height: 1.75;
  }

  body[data-language="zh"].overview-page .overview-scope {
    line-height: 1.55;
  }
}

/* Responsive first-screen contract.
   The hero occupies the viewport below the fixed-height header, and its
   partner strip is the final row. Content is allowed to grow naturally on
   unusually short or narrow screens; nothing is clipped to fake the fold. */
.overview-page .overview-hero-partners {
  grid-area: partners;
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(240px, 0.9fr) minmax(270px, 0.95fr) minmax(460px, 1.45fr);
  align-items: start;
  gap: clamp(18px, 2.4vw, 34px);
  align-self: end;
  margin: 0;
  padding-top: clamp(12px, 1.7vh, 18px);
  border-top: 1px solid var(--line);
}

.overview-page .overview-hero-partners > .overview-credit-item {
  min-width: 0;
  padding-right: clamp(14px, 1.8vw, 26px);
  border-right: 1px solid var(--line);
}

.overview-page .overview-hero-partners > .overview-credit-item + .overview-credit-item {
  padding-left: 0;
  border-left: 0;
}

.overview-page .overview-hero-partners .overview-credit-item {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 6px;
}

.overview-page .overview-hero-partners .overview-credit-body {
  min-width: 0;
  min-height: 68px;
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  align-items: center;
  gap: 11px;
}

.overview-page .overview-hero-partners .overview-credit-icon,
.overview-page .overview-hero-partners .overview-supporter-logo-wrap {
  width: 56px;
  height: 44px;
  display: grid;
  place-items: center;
}

.overview-page .overview-hero-partners .overview-credit-icon img {
  width: auto;
  height: 40px;
  max-width: 52px;
  object-fit: contain;
}

.overview-page .overview-hero-partners .overview-credit-organizer .overview-credit-body {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: clamp(12px, 1.5vw, 22px);
}

.overview-page .overview-organizer-entry {
  min-width: 0;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  align-items: center;
  gap: 6px;
  text-align: left;
}

.overview-page .overview-organizer-logo-wrap {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
}

.overview-page .overview-organizer-logo-wrap img {
  width: auto;
  height: 40px;
  max-width: 40px;
  object-fit: contain;
}

.overview-page .overview-organizer-entry strong {
  min-width: 0;
  margin: 0;
  white-space: normal;
  overflow-wrap: anywhere;
  text-align: left;
}

.overview-page .overview-hero-partners .overview-credit-label {
  font-size: 10px;
  line-height: 1.2;
  text-transform: uppercase;
}

.overview-page .overview-hero-partners .overview-credit-item strong {
  margin-top: 2px;
  font-size: clamp(12px, 0.92vw, 14px);
  line-height: 1.24;
}

.overview-page .overview-hero-partners .overview-track-link {
  margin-top: 3px;
  font-size: 10.5px;
}

.overview-page .overview-hero-partners .overview-hero-affiliations {
  grid-area: auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 6px;
  align-self: start;
  margin: 0;
  padding: 0;
  border: 0;
}

.overview-page .overview-hero-partners .overview-hero-affiliations h2 {
  margin: 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.2;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.overview-page .overview-hero-partners .overview-hero-affiliation-list {
  min-width: 0;
  min-height: 68px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 12px;
}

.overview-page .overview-hero-partners .overview-hero-affiliation-list li {
  min-width: 0;
  grid-template-columns: 56px minmax(0, 1fr);
  align-self: center;
  gap: 9px;
}

.overview-page .overview-hero-partners .overview-supporter-logo-wrap {
  height: 44px;
}

.overview-page .overview-hero-partners .overview-supporter-logo {
  width: auto;
  height: 40px;
  max-width: 56px;
  max-height: 40px;
  object-fit: contain;
}

.overview-page .overview-hero-partners .overview-supporter-logo--meituan {
  width: auto;
  height: 40px;
}

.overview-page .overview-hero-partners .overview-supporter-logo--cnic {
  width: auto;
  height: 30px;
  max-height: 30px;
}

.overview-page .overview-hero-partners .overview-sponsor-copy strong {
  font-size: 11.5px;
  line-height: 1.22;
}

.overview-page .overview-hero-partners .overview-sponsor-copy small {
  margin-top: 2px;
  font-size: 9.5px;
  line-height: 1.25;
}

/* The six-date timeline is a connected snake on larger screens. The marker
   pseudo-element stays above these segments so every joint reads as one path. */
.overview-page .overview-date-list {
  --timeline-row-gap: clamp(38px, 4vw, 52px);
  row-gap: var(--timeline-row-gap);
}

@media (min-width: 961px) {
  .overview-page .overview-date-list {
    grid-template-rows: auto auto;
  }

  .overview-page .overview-date-list::before {
    display: none;
  }

  .overview-page .overview-date-list li::before {
    z-index: 2;
  }

  /* Return across the second row so the chronological order reads as a snake. */
  .overview-page .overview-date-list li:nth-child(4) {
    grid-column: 3;
    grid-row: 2;
  }

  .overview-page .overview-date-list li:nth-child(5) {
    grid-column: 2;
    grid-row: 2;
  }

  .overview-page .overview-date-list li:nth-child(6) {
    grid-column: 1;
    grid-row: 2;
  }

  .overview-page .overview-date-list li::after {
    position: absolute;
    z-index: 1;
    top: -25px;
    height: 2px;
    content: "";
    background: var(--line-strong);
  }

  /* First row: 1 -> 2 -> 3. */
  .overview-page .overview-date-list li:nth-child(1)::after,
  .overview-page .overview-date-list li:nth-child(2)::after {
    right: -12px;
    left: 12px;
  }

  /* Node 3 turns down at the right edge and returns to node 4. */
  .overview-page .overview-date-list li:nth-child(3)::after {
    top: -25px;
    right: 0;
    left: 12px;
    height: calc(100% + var(--timeline-row-gap));
    border-top: 2px solid var(--line-strong);
    border-right: 2px solid var(--line-strong);
    border-bottom: 2px solid var(--line-strong);
    border-radius: 0 18px 18px 0;
    background: none;
  }

  /* Second row runs back from node 4 to node 6. */
  .overview-page .overview-date-list li:nth-child(4)::after,
  .overview-page .overview-date-list li:nth-child(5)::after {
    right: calc(100% - 12px);
    left: auto;
    width: 100%;
  }

  .overview-page .overview-date-list li:nth-child(6)::after {
    display: none;
  }
}

@media (min-width: 721px) and (max-width: 960px) {
  .overview-page .overview-date-list {
    grid-template-rows: auto auto auto;
  }

  .overview-page .overview-date-list::before {
    display: none;
  }

  .overview-page .overview-date-list li::before {
    z-index: 2;
  }

  .overview-page .overview-date-list li:nth-child(3) {
    grid-column: 2;
    grid-row: 2;
  }

  .overview-page .overview-date-list li:nth-child(4) {
    grid-column: 1;
    grid-row: 2;
  }

  .overview-page .overview-date-list li:nth-child(5) {
    grid-column: 1;
    grid-row: 3;
  }

  .overview-page .overview-date-list li:nth-child(6) {
    grid-column: 2;
    grid-row: 3;
  }

  .overview-page .overview-date-list li::after {
    position: absolute;
    z-index: 1;
    top: -25px;
    height: 2px;
    content: "";
    background: var(--line-strong);
  }

  /* Top row: 1 -> 2. */
  .overview-page .overview-date-list li:nth-child(1)::after {
    right: -12px;
    left: 12px;
  }

  /* Node 2 turns down at the right edge and returns to node 3. */
  .overview-page .overview-date-list li:nth-child(2)::after {
    top: -25px;
    right: 0;
    left: 12px;
    height: calc(100% + var(--timeline-row-gap));
    border-top: 2px solid var(--line-strong);
    border-right: 2px solid var(--line-strong);
    border-bottom: 2px solid var(--line-strong);
    border-radius: 0 18px 18px 0;
    background: none;
  }

  /* Middle row: 3 -> 4. */
  .overview-page .overview-date-list li:nth-child(3)::after {
    right: calc(100% - 12px);
    left: auto;
    width: 100%;
  }

  /* Node 4 turns down at the left edge and returns to node 5. */
  .overview-page .overview-date-list li:nth-child(4)::after {
    top: -25px;
    right: auto;
    left: 0;
    width: 12px;
    height: calc(100% + var(--timeline-row-gap));
    border-top: 2px solid var(--line-strong);
    border-bottom: 2px solid var(--line-strong);
    border-left: 2px solid var(--line-strong);
    border-radius: 18px 0 0 18px;
    background: none;
  }

  /* Bottom row: 5 -> 6. */
  .overview-page .overview-date-list li:nth-child(5)::after {
    right: -12px;
    left: 12px;
  }

  .overview-page .overview-date-list li:nth-child(6)::after {
    display: none;
  }
}

@media (min-width: 961px) {
  .overview-page .overview-hero,
  body[data-language="zh"].overview-page .overview-hero {
    box-sizing: border-box;
    min-height: calc(100vh - var(--header-height));
    min-height: calc(100svh - var(--header-height));
    align-items: stretch;
    padding: clamp(18px, 2.8vh, 32px) 0 clamp(14px, 2.1vh, 24px);
  }

  .overview-page .overview-hero-shell {
    grid-template-areas:
      ". ."
      "heading heading"
      "copy art"
      "actions art"
      ". art"
      "partners partners"
      ". .";
    grid-template-rows: minmax(0, 1fr) auto auto auto minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: start;
    row-gap: 10px;
  }

  .overview-page .overview-hero-heading {
    align-self: start;
  }

  .overview-page .overview-hero-copy {
    align-self: start;
  }

  .overview-page .overview-hero-art {
    align-self: center;
    min-height: clamp(190px, 25vh, 280px);
  }

  .overview-page .overview-actions {
    grid-area: actions;
    align-self: start;
    margin: 0;
  }
}

@media (min-width: 961px) and (max-height: 820px) {
  .overview-page .overview-hero,
  body[data-language="zh"].overview-page .overview-hero {
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .overview-page .overview-hero-shell {
    row-gap: 10px;
  }

  .overview-page .overview-hero h1 {
    font-size: clamp(42px, 4.2vw, 58px);
  }

  .overview-page .overview-deck {
    margin-top: 9px;
    font-size: clamp(18px, 1.7vw, 22px);
    line-height: 1.2;
  }

  .overview-page .overview-description,
  .overview-page .overview-intro {
    margin-top: 7px;
    font-size: 13px;
    line-height: 1.4;
  }

  .overview-page .overview-scope {
    margin-top: 8px;
    font-size: 12px;
    line-height: 1.35;
  }

  .overview-page .overview-hero-art {
    min-height: 170px;
  }

  .overview-page .overview-actions a {
    min-height: 36px;
    padding: 0 15px;
    font-size: 12px;
  }

  .overview-page .overview-hero-partners {
    padding-top: 9px;
  }
}

@media (max-width: 960px) {
  .overview-page .overview-hero,
  body[data-language="zh"].overview-page .overview-hero {
    box-sizing: border-box;
    min-height: calc(100vh - var(--header-height));
    min-height: calc(100svh - var(--header-height));
  }

  .overview-page .overview-hero-shell {
    grid-template-areas:
      "heading heading"
      "copy art"
      "actions actions"
      "partners partners";
  }

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

  .overview-page .overview-hero-partners .overview-hero-affiliations {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .overview-page .overview-hero-shell {
    grid-template-areas:
      "heading"
      "copy"
      "art"
      "actions"
      "partners";
  }

  .overview-page .overview-hero-partners {
    grid-template-columns: 1fr;
    gap: 17px;
  }

  .overview-page .overview-hero-partners > .overview-credit-item {
    padding: 0 0 17px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .overview-page .overview-hero-partners .overview-hero-affiliations {
    grid-column: auto;
    grid-template-columns: 1fr;
    gap: 11px;
  }

  .overview-page .overview-hero-partners .overview-hero-affiliation-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .overview-page .overview-hero-partners .overview-credit-organizer .overview-credit-body {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .overview-page .overview-date-list {
    row-gap: 24px;
  }

  .overview-page .overview-date-list li::after {
    display: none;
  }
}