.page-about {
  display: block;
  background: var(--ink);
  color: var(--bone);
  overflow-x: hidden;
}

.page-about .about-hero__shell,
.page-about .about-eras .shell,
.page-about .about-coverage .shell,
.page-about .about-sources .shell,
.page-about .about-team .shell,
.page-about .about-partners .shell,
.page-about .about-glossary .shell,
.page-about .about-versions .shell,
.page-about .about-next .shell {
  position: relative;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(84px, 13vw, 160px) 0 clamp(46px, 6vw, 86px);
  background: var(--ink);
}

.page-about .about-hero__cut {
  position: absolute;
  top: -20%;
  right: -18%;
  width: min(780px, 100vw);
  height: 138%;
  z-index: 0;
  background: linear-gradient(148deg, var(--flame) 0%, #8f1a12 44%, rgba(11, 11, 15, 0) 78%);
  clip-path: polygon(46% 0%, 100% 0%, 100% 100%, 0% 100%);
  opacity: 0.4;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 58%;
  bottom: -46%;
  width: min(620px, 118vw);
  height: min(620px, 118vw);
  z-index: 0;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(230, 167, 60, 0.16) 0%, rgba(230, 167, 60, 0) 66%);
  pointer-events: none;
}

.page-about .about-hero__shell {
  z-index: 1;
}

.page-about .about-hero__rot {
  position: absolute;
  top: 4px;
  right: 0;
  height: 200px;
  writing-mode: vertical-rl;
  padding-right: 9px;
  border-right: 1px solid var(--line-2);
  font-size: 12px;
  letter-spacing: 0.34em;
  color: var(--stone);
}

.page-about .about-hero__kicker {
  margin: clamp(26px, 5vw, 52px) 0 14px;
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .about-hero__title {
  margin: 0 0 24px;
  max-width: 15ch;
  font-family: var(--font-sans);
  font-size: clamp(38px, 8vw, 86px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--bone);
}

.page-about .about-hero__title span {
  display: block;
  margin-top: 0.16em;
  font-size: 0.63em;
  line-height: 1.14;
  letter-spacing: -0.02em;
  background: linear-gradient(96deg, var(--flame-lite) 0%, var(--gold) 82%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-hero__lede {
  max-width: 60ch;
  margin: 0 0 clamp(30px, 4vw, 44px);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--cool);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 16px 20px;
  max-width: 820px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-fact {
  padding-top: 14px;
  border-top: 1px solid var(--line-2);
}

.page-about .about-fact__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4.2vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--gold);
}

.page-about .about-fact__cap {
  display: block;
  margin-top: 9px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

/* ---------- 章节目录 ---------- */
.page-about .about-index {
  position: relative;
  z-index: 2;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-index__shell {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 26px);
  padding-top: 13px;
  padding-bottom: 13px;
}

.page-about .about-index__label {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--stone);
}

.page-about .about-index__list {
  display: flex;
  flex: 1 1 auto;
  min-width: 0;
  gap: 8px;
  margin: 0;
  padding: 0 2px 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__link {
  display: inline-block;
  white-space: nowrap;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-cap);
  font-size: 13px;
  color: var(--cool);
  text-decoration: none;
  transition: color 0.24s var(--ease), background-color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
}

/* ---------- 年份脉络 ---------- */
.page-about .about-eras {
  padding: var(--sec) 0;
  background: var(--ink);
}

.page-about .about-eras__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 56px);
  margin-top: clamp(34px, 5vw, 60px);
}

.page-about .about-eras__figure {
  position: relative;
  margin: 0;
}

.page-about .about-eras__figure::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 64px;
  height: 4px;
  border-radius: var(--r-cap);
  background: linear-gradient(90deg, var(--flame), var(--gold));
}

.page-about .about-eras__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.page-about .about-eras__figure figcaption {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--stone);
}

.page-about .about-eras__list {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-era {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3vw, 30px) clamp(18px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-2);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .about-era::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--flame), var(--gold));
}

.page-about .about-era:hover {
  border-color: var(--line-2);
  transform: translateX(4px);
}

.page-about .about-era__year {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.6vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--flame-lite);
}

.page-about .about-era .tag {
  margin: 12px 0 12px;
}

.page-about .about-era__title {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.3vw, 24px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-about .about-era__text {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cool);
}

/* ---------- 资料库覆盖 ---------- */
.page-about .about-coverage {
  padding: var(--sec) 0;
  background: var(--bone);
  color: var(--ink);
}

.page-about .about-coverage .section-head__kicker {
  color: var(--clay);
}

.page-about .about-coverage .section-head__title {
  color: var(--ink);
}

.page-about .about-coverage__head {
  max-width: 720px;
}

.page-about .about-coverage__head .lede {
  margin-top: 16px;
  color: var(--stone);
}

.page-about .about-coverage__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(34px, 5vw, 58px);
  align-items: center;
}

.page-about .about-coverage__ring {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.page-about .about-ring {
  width: min(280px, 74vw);
  height: auto;
}

.page-about .about-ring__arc {
  opacity: 0.9;
}

.page-about .about-ring__num {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.03em;
  fill: var(--ink);
}

.page-about .about-ring__cap {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.18em;
  fill: var(--stone);
}

.page-about .about-ring__legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--stone);
}

.page-about .about-ring__legend li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.page-about .about-ring__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.page-about .about-ring__dot--a { background: var(--flame); }
.page-about .about-ring__dot--b { background: var(--gold); }
.page-about .about-ring__dot--c { background: var(--clay); }

.page-about .about-coverage__stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-line");
}

.page-about .about-coverage__stats {
  background: rgba(11, 11, 15, 0.12);
}

.page-about .about-coverage__stat {
  padding: clamp(20px, 3vw, 28px);
  background: var(--bone);
}

.page-about .about-coverage__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(34px, 5.4vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--flame);
}

.page-about .about-coverage__unit {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-about .about-coverage__stat p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
  opacity: 0.78;
}

.page-about .about-dims {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-about .about-dim {
  padding: 18px;
  border: 1px solid rgba(11, 11, 15, 0.16);
  border-radius: var(--r-md);
  background: rgba(243, 239, 231, 0.5);
  transition: border-color 0.26s var(--ease), background-color 0.26s var(--ease);
}

.page-about .about-dim:hover {
  border-color: var(--flame);
  background: rgba(226, 58, 46, 0.06);
}

.page-about .about-dim__k {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--clay);
}

.page-about .about-dim p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--stone);
}

/* ---------- 资料与更新 ---------- */
.page-about .about-sources {
  padding: var(--sec) 0;
  background: var(--ink-2);
}

.page-about .about-sources__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 56px);
}

.page-about .about-sources__lead .section-head__title {
  color: var(--bone);
}

.page-about .about-sources__text {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--cool);
}

.page-about .about-sources__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--line);
}

.page-about .about-source {
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--ink);
  transition: background-color 0.26s var(--ease);
}

.page-about .about-source:hover {
  background: #131419;
}

.page-about .about-source__idx {
  display: block;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-about .about-source__title {
  margin: 10px 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--bone);
}

.page-about .about-source p {
  margin: 0;
  max-width: 50ch;
  font-size: 14px;
  line-height: 1.76;
  color: var(--cool);
}

.page-about .about-sources__cadence {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(16px, 2.4vw, 26px);
  margin-top: clamp(28px, 4vw, 46px);
}

.page-about .about-cadence {
  padding: clamp(22px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, rgba(226, 58, 46, 0.14) 0%, rgba(23, 24, 30, 0.6) 62%);
}

.page-about .about-cadence__figure {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0;
}

.page-about .about-cadence__num {
  font-family: var(--font-mono);
  font-size: clamp(40px, 6vw, 62px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.045em;
  color: var(--gold);
}

.page-about .about-cadence__unit {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--cool);
}

.page-about .about-cadence__text {
  margin: 14px 0 0;
  max-width: 42ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--cool);
}

/* ---------- 团队分工 ---------- */
.page-about .about-team {
  padding: var(--sec) 0;
  background: var(--ink);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 52px);
}

.page-about .about-team__cards .section-head {
  margin-bottom: clamp(26px, 3.6vw, 40px);
}

.page-about .about-team__cards .section-head__title {
  color: var(--bone);
}

.page-about .about-team__cards .lede {
  margin-top: 16px;
  max-width: 52ch;
  color: var(--cool);
}

.page-about .about-team__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-group {
  padding: clamp(18px, 2.6vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-2);
  transition: border-color 0.26s var(--ease), transform 0.26s var(--ease);
}

.page-about .about-group:hover {
  border-color: var(--line-2);
  transform: translateY(-3px);
}

.page-about .about-group__tag {
  display: inline-block;
  margin-bottom: 12px;
}

.page-about .about-group__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--bone);
}

.page-about .about-group p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--cool);
}

.page-about .about-team__figure {
  position: relative;
  margin: 0;
  align-self: start;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  object-fit: cover;
  filter: saturate(0.9) contrast(1.06);
}

.page-about .about-team__figure figcaption {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 合作伙伴 ---------- */
.page-about .about-partners {
  padding: var(--sec) 0;
  background: var(--ink-2);
}

.page-about .about-partners .section-head__title {
  color: var(--bone);
}

.page-about .about-partners .lede {
  margin-top: 16px;
  max-width: 62ch;
  color: var(--cool);
}

.page-about .about-partners__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  margin: clamp(30px, 4vw, 48px) 0 0;
  padding: 0;
  list-style: none;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--line);
}

.page-about .about-partner {
  padding: clamp(20px, 2.8vw, 28px);
  background: var(--ink);
}

.page-about .about-partner__title {
  position: relative;
  margin: 0 0 10px;
  padding-top: 16px;
  font-size: 17px;
  font-weight: 800;
  color: var(--bone);
}

.page-about .about-partner__title::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 28px;
  height: 3px;
  border-radius: var(--r-cap);
  background: var(--flame);
}

.page-about .about-partner p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--cool);
}

/* ---------- 译名与术语 ---------- */
.page-about .about-glossary {
  padding: var(--sec) 0;
  background: var(--ink);
}

.page-about .about-glossary__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: center;
}

.page-about .about-glossary .section-head__title {
  color: var(--bone);
}

.page-about .about-glossary__para {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--cool);
}

.page-about .about-glossary__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-glossary__tags .tag {
  display: inline-block;
}

.page-about .about-glossary__figure {
  position: relative;
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-2);
}

.page-about .about-glossary__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-md);
  object-fit: cover;
}

.page-about .about-glossary__figure figcaption {
  margin-top: 12px;
  padding: 0 4px 4px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 版本演进 ---------- */
.page-about .about-versions {
  padding: var(--sec) 0;
  background: var(--ink-2);
}

.page-about .about-versions .section-head__title {
  color: var(--bone);
}

.page-about .about-versions .lede {
  margin-top: 16px;
  max-width: 62ch;
  color: var(--cool);
}

.page-about .about-versions__track {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: clamp(30px, 4vw, 50px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-version {
  position: relative;
  padding: clamp(20px, 2.8vw, 28px);
  border: 1px solid var(--line);
  border-top: 3px solid var(--flame);
  border-radius: var(--r-md);
  background: var(--ink);
}

.page-about .about-version:nth-child(2) { border-top-color: var(--gold); }
.page-about .about-version:nth-child(3) { border-top-color: var(--clay); }
.page-about .about-version:nth-child(4) { border-top-color: var(--moss); }

.page-about .about-version__no {
  display: block;
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--bone);
}

.page-about .about-version__title {
  margin: 12px 0 8px;
  font-size: 16px;
  font-weight: 800;
  color: var(--bone);
}

.page-about .about-version p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--cool);
}

/* ---------- 继续浏览 ---------- */
.page-about .about-next {
  padding: var(--sec) 0;
  background: var(--bone);
  color: var(--ink);
}

.page-about .about-next__shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-about .about-next .section-head__kicker {
  color: var(--clay);
}

.page-about .about-next__title {
  margin: 10px 0 0;
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.025em;
  color: var(--ink);
}

.page-about .about-next__para {
  margin: 16px 0 0;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--stone);
}

.page-about .about-next__links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-next__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
  padding: 20px;
  border: 1px solid rgba(11, 11, 15, 0.18);
  border-radius: var(--r-md);
  text-decoration: none;
  background: rgba(243, 239, 231, 0.6);
  transition: border-color 0.26s var(--ease), background-color 0.26s var(--ease), transform 0.26s var(--ease);
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  border-color: var(--flame);
  background: rgba(226, 58, 46, 0.08);
  transform: translateY(-3px);
}

.page-about .about-next__card-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-about .about-next__card-title {
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

/* ---------- 响应式 ---------- */
@media (max-width: 880px) {
  .page-about .about-hero__rot {
    display: none;
  }

  .page-about .about-hero__title {
    max-width: none;
  }

  .page-about .about-index__label {
    display: none;
  }

  .page-about .about-era:hover {
    transform: none;
  }

  .page-about .about-group:hover {
    transform: none;
  }
}

@media (min-width: 760px) {
  .page-about .about-coverage__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-team__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-versions__track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-about .about-eras__body {
    grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-eras__aside {
    position: sticky;
    top: 118px;
  }

  .page-about .about-era:nth-child(2) {
    margin-left: clamp(18px, 3vw, 46px);
  }

  .page-about .about-era:nth-child(3) {
    margin-left: clamp(36px, 6vw, 92px);
  }

  .page-about .about-coverage__grid {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  }

  .page-about .about-sources__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }

  .page-about .about-team__figure {
    position: sticky;
    top: 118px;
  }

  .page-about .about-glossary__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  }

  .page-about .about-versions__track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-next__shell {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  }
}

@media (min-width: 1180px) {
  .page-about .about-era:nth-child(2) {
    margin-left: clamp(30px, 4vw, 62px);
  }

  .page-about .about-era:nth-child(3) {
    margin-left: clamp(60px, 8vw, 124px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-era,
  .page-about .about-group,
  .page-about .about-next__card {
    transition: none;
  }

  .page-about .about-era:hover,
  .page-about .about-group:hover,
  .page-about .about-next__card:hover {
    transform: none;
  }
}