/* ================= page-about ================= */
.page-about {
  display: block;
  width: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

.page-about .mv-wrap {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 24px;
}

@media (min-width: 900px) {
  .page-about .mv-wrap {
    padding-inline: 40px;
  }
}

/* ---------- 面包屑 ---------- */
.page-about .mv-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  padding-block: 26px 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}

.page-about .mv-crumb a {
  color: inherit;
  text-decoration: none;
  opacity: 0.5;
  transition: opacity var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-about .mv-crumb a:hover,
.page-about .mv-crumb a:focus-visible {
  opacity: 1;
  color: var(--violet);
}

.page-about .mv-crumb__sep {
  opacity: 0.3;
}

.page-about .mv-crumb [aria-current="page"] {
  opacity: 1;
}

/* ---------- 分屏首屏 ---------- */
.page-about .mv-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
  padding-block: 8px 60px;
}

@media (min-width: 1000px) {
  .page-about .mv-hero {
    grid-template-columns: minmax(0, 45fr) minmax(0, 55fr);
    gap: 0;
    padding-block: 28px 96px;
  }
}

.page-about .mv-hero__story {
  max-width: 40em;
}

.page-about .mv-kicker {
  display: inline-block;
  margin: 0 0 22px;
  padding: 5px 11px;
  background: rgba(201, 214, 228, 0.42);
  border: 1px solid var(--ice);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}

.page-about .mv-hero__title {
  margin: 0 0 26px;
  font-size: clamp(38px, 8.4vw, 90px);
  font-weight: 200;
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .mv-hero__title em {
  font-style: normal;
  font-weight: 900;
  color: var(--violet);
  text-shadow: 0 0 16px rgba(122, 59, 255, 0.42), 0 0 40px rgba(122, 59, 255, 0.22);
}

.page-about .mv-hero__lead {
  max-width: 34em;
  margin: 0 0 34px;
  font-size: 17px;
  line-height: 1.78;
  color: var(--ink);
  opacity: 0.86;
}

.page-about .mv-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 纯 CSS 机台场景 */
.page-about .mv-hero__scene {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 340px;
  padding: 40px 24px;
  background:
    radial-gradient(circle at 50% 18%, rgba(122, 59, 255, 0.32), transparent 62%),
    linear-gradient(160deg, var(--deep-2), var(--deep-1) 58%, var(--deep-3));
  border: 1px solid rgba(56, 232, 255, 0.26);
  overflow: hidden;
}

.page-about .mv-hero__scene::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(56, 232, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 232, 255, 0.1) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 92%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 92%);
  pointer-events: none;
}

.page-about .mv-hero__beam {
  position: absolute;
  left: 0;
  top: 10%;
  bottom: 10%;
  width: 2px;
  background: linear-gradient(180deg, transparent, var(--cyan), var(--violet), transparent);
  opacity: 0.72;
}

.page-about .mv-cab {
  position: relative;
  z-index: 1;
  width: min(78%, 340px);
  padding: 18px 18px 24px;
  background: linear-gradient(180deg, #141a44, #0a0e24);
  border: 1px solid rgba(122, 59, 255, 0.5);
  box-shadow:
    0 0 0 1px rgba(56, 232, 255, 0.14),
    0 28px 60px rgba(0, 0, 0, 0.6);
}

.page-about .mv-cab__marquee {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: clamp(34px, 9vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.08em;
  text-align: center;
  color: var(--gold);
  text-shadow: 0 0 12px rgba(242, 193, 78, 0.75), 0 0 34px rgba(242, 193, 78, 0.38);
}

.page-about .mv-cab__screen {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 4 / 3;
  background: radial-gradient(circle at 50% 50%, rgba(56, 232, 255, 0.2), rgba(11, 16, 48, 0.96) 72%);
  border: 1px solid rgba(56, 232, 255, 0.45);
  overflow: hidden;
}

.page-about .mv-cab__glyph {
  font-size: clamp(15px, 3.4vw, 22px);
  letter-spacing: 0.3em;
  color: var(--cyan);
  text-shadow: 0 0 10px rgba(56, 232, 255, 0.85), 0 0 26px rgba(56, 232, 255, 0.5);
}

.page-about .mv-cab__scan {
  position: absolute;
  left: 0;
  right: 0;
  height: 26%;
  background: linear-gradient(180deg, transparent, rgba(56, 232, 255, 0.24), transparent);
  animation: mv-about-scan 3.8s linear infinite;
}

@keyframes mv-about-scan {
  0% { top: -30%; }
  100% { top: 104%; }
}

.page-about .mv-cab__panel {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.page-about .mv-cab__panel i {
  flex: 1;
  height: 10px;
  background: rgba(122, 59, 255, 0.34);
  border: 1px solid rgba(122, 59, 255, 0.6);
}

.page-about .mv-cab__panel i:nth-child(2) {
  background: rgba(255, 90, 43, 0.5);
  border-color: rgba(255, 90, 43, 0.8);
}

.page-about .mv-cab__panel i:nth-child(4) {
  background: rgba(242, 193, 78, 0.4);
  border-color: rgba(242, 193, 78, 0.7);
}

/* ---------- 通用区块标题 ---------- */
.page-about .mv-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 30px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(26, 20, 16, 0.18);
}

.page-about .mv-idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--violet);
}

.page-about .mv-h2 {
  margin: 0;
  font-size: clamp(25px, 4.4vw, 42px);
  font-weight: 300;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .mv-prose p {
  margin: 0 0 20px;
  max-width: 42em;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--ink);
  opacity: 0.86;
}

.page-about .mv-prose p:last-child {
  margin-bottom: 0;
}

.page-about .mv-prose--lead {
  margin: 0 0 36px;
}

.page-about .mv-prose--lead p {
  opacity: 0.8;
}

.page-about .mv-mono {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
}

/* ---------- 01 主张由来 ---------- */
.page-about .mv-why {
  padding-block: 64px;
}

.page-about .mv-pillars {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: 44px 0 0;
  padding: 0;
  background: rgba(26, 20, 16, 0.16);
  border: 1px solid rgba(26, 20, 16, 0.16);
}

@media (min-width: 780px) {
  .page-about .mv-pillars {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .mv-pillars li {
  padding: 26px 22px 28px;
  background: var(--paper);
}

.page-about .mv-pillars__k {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-about .mv-pillars p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
  opacity: 0.84;
}

/* ---------- 02 发展年表 ---------- */
.page-about .mv-tlsec {
  padding-block: 66px 56px;
  border-top: 1px solid rgba(26, 20, 16, 0.14);
  border-bottom: 1px solid rgba(26, 20, 16, 0.14);
  background: linear-gradient(180deg, #f1e8d9, var(--paper) 45%, #f2e9da);
}

.page-about .mv-tl {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .mv-tl__item {
  border-top: 1px solid rgba(26, 20, 16, 0.14);
}

.page-about .mv-tl__item:last-child {
  border-bottom: 1px solid rgba(26, 20, 16, 0.14);
}

.page-about .mv-tl__item[data-open="true"] {
  background: rgba(243, 235, 221, 0.6);
}

.page-about .mv-tl__trigger {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "year year"
    "title mark";
  gap: 8px 16px;
  align-items: center;
  width: 100%;
  padding: 26px 4px 22px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: background var(--t-mid) var(--ease);
}

.page-about .mv-tl__trigger:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 3px;
}

.page-about .mv-tl__year {
  grid-area: year;
  font-family: var(--font-mono);
  font-size: clamp(50px, 13vw, 96px);
  font-weight: 200;
  line-height: 0.92;
  letter-spacing: -0.05em;
  color: var(--ink);
  opacity: 0.28;
  transition: opacity var(--t-mid) var(--ease), color var(--t-mid) var(--ease);
}

.page-about .mv-tl__item[data-open="true"] .mv-tl__year {
  opacity: 0.9;
  color: var(--violet);
}

.page-about .mv-tl__title {
  grid-area: title;
  font-size: clamp(16px, 2.2vw, 20px);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-about .mv-tl__mark {
  grid-area: mark;
  position: relative;
  width: 20px;
  height: 20px;
  flex: none;
}

.page-about .mv-tl__mark::before,
.page-about .mv-tl__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--ink);
  transition: transform var(--t-mid) var(--ease), background var(--t-mid) var(--ease);
}

.page-about .mv-tl__mark::before {
  width: 16px;
  height: 1px;
  transform: translate(-50%, -50%);
}

.page-about .mv-tl__mark::after {
  width: 1px;
  height: 16px;
  transform: translate(-50%, -50%);
}

.page-about .mv-tl__item[data-open="true"] .mv-tl__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-about .mv-tl__item[data-open="true"] .mv-tl__mark::before {
  background: var(--orange);
}

.page-about .mv-tl__panel {
  padding: 0 4px 30px;
}

.page-about .mv-tl__panel p {
  margin: 0 0 16px;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
  opacity: 0.84;
}

.page-about .mv-tl__panel p:last-child {
  margin-bottom: 0;
}

.page-about .mv-tl__fig {
  margin: 24px 0 0;
  max-width: 42em;
}

.page-about .mv-tl__fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(26, 20, 16, 0.16);
}

.page-about .mv-tl__fig figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink);
  opacity: 0.62;
}

.page-about .mv-ice {
  margin-top: 40px;
  color: var(--violet);
  opacity: 0.32;
}

.page-about .mv-ice svg {
  display: block;
  width: 100%;
  height: 24px;
}

/* ---------- 深底引用带 ---------- */
.page-about .mv-quote {
  position: relative;
  margin-top: -1px;
  padding-block: 88px 92px;
  background: linear-gradient(135deg, var(--deep-1), var(--deep-2) 54%, var(--deep-3));
  color: var(--paper);
  overflow: hidden;
  clip-path: polygon(0 26px, 100% 0, 100% calc(100% - 26px), 0 100%);
}

.page-about .mv-quote__beam {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    transparent 28%,
    rgba(122, 59, 255, 0.42) 45%,
    rgba(56, 232, 255, 0.42) 55%,
    transparent 72%
  );
  background-size: 260% 100%;
  animation: mv-about-flow 9s ease-in-out infinite;
  opacity: 0.5;
  pointer-events: none;
}

@keyframes mv-about-flow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.page-about .mv-quote__inner {
  position: relative;
  z-index: 1;
}

.page-about .mv-quote__text {
  margin: 0 0 26px;
  max-width: min(20em, 820px);
  font-size: clamp(22px, 3.6vw, 36px);
  font-weight: 200;
  line-height: 1.44;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .mv-quote__sign {
  margin: 0;
  padding-left: 44px;
  position: relative;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .mv-quote__sign::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 32px;
  height: 1px;
  background: var(--cyan);
  opacity: 0.7;
}

/* ---------- 03 团队 ---------- */
.page-about .mv-teams {
  padding-block: 76px 84px;
}

.page-about .mv-teams__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-bottom: 38px;
  background: rgba(26, 20, 16, 0.16);
  border: 1px solid rgba(26, 20, 16, 0.16);
}

@media (min-width: 700px) {
  .page-about .mv-teams__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-about .mv-teams__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .mv-team {
  position: relative;
  padding: 28px 22px 30px;
  background: var(--paper);
  transition: background var(--t-mid) var(--ease);
}

.page-about .mv-team::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--violet);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--t-mid) var(--ease);
}

.page-about .mv-team:hover::before {
  transform: scaleY(1);
}

.page-about .mv-team:hover {
  background: rgba(243, 235, 221, 0.7);
}

.page-about .mv-team__code {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--violet);
}

.page-about .mv-team h3 {
  margin: 0 0 12px;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-about .mv-team p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink);
  opacity: 0.82;
}

.page-about .mv-chain {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0 0 44px;
  padding: 0;
}

@media (min-width: 1020px) {
  .page-about .mv-chain {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .mv-chain li {
  position: relative;
  padding: 18px 16px 18px 52px;
  border-top: 2px solid var(--ink);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  opacity: 0.84;
}

@media (min-width: 1020px) {
  .page-about .mv-chain li + li {
    border-left: 1px solid rgba(26, 20, 16, 0.16);
  }
}

.page-about .mv-chain__n {
  position: absolute;
  left: 0;
  top: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-about .mv-teams__fig {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
}

@media (min-width: 900px) {
  .page-about .mv-teams__fig {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    gap: 32px;
    align-items: end;
  }
}

.page-about .mv-teams__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(26, 20, 16, 0.16);
}

.page-about .mv-teams__fig figcaption {
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink);
  opacity: 0.7;
}

/* ---------- 04 冰雪赛季 ---------- */
.page-about .mv-winter {
  position: relative;
  padding-block: 70px 74px;
  background:
    radial-gradient(120% 90% at 82% 0%, rgba(56, 232, 255, 0.24), transparent 60%),
    linear-gradient(180deg, #e9f0f7, #dee8f3);
  overflow: hidden;
}

.page-about .mv-winter::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(58deg, rgba(11, 16, 48, 0.055) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(-32deg, rgba(11, 16, 48, 0.045) 0 1px, transparent 1px 62px);
  pointer-events: none;
}

.page-about .mv-winter .mv-wrap {
  position: relative;
  z-index: 1;
}

.page-about .mv-winter .mv-head {
  border-bottom-color: rgba(11, 16, 48, 0.24);
}

.page-about .mv-winter__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 980px) {
  .page-about .mv-winter__cols {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
    align-items: start;
  }
}

.page-about .mv-winter__copy p {
  opacity: 0.84;
}

.page-about .mv-winter__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(11, 16, 48, 0.22);
}

.page-about .mv-winter__facts li {
  padding: 18px 0 20px;
  border-bottom: 1px solid rgba(11, 16, 48, 0.16);
}

.page-about .mv-winter__facts p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  opacity: 0.82;
}

.page-about .mv-winter__fig {
  margin: 44px 0 0;
}

.page-about .mv-winter__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(11, 16, 48, 0.22);
}

.page-about .mv-winter__fig figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink);
  opacity: 0.66;
}

/* ---------- 05 留下来的理由 ---------- */
.page-about .mv-keep {
  padding-block: 78px 84px;
}

.page-about .mv-keep__list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
}

@media (min-width: 900px) {
  .page-about .mv-keep__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .mv-keep__list li {
  padding: 26px 0 30px;
  border-top: 2px solid var(--ink);
}

@media (min-width: 900px) {
  .page-about .mv-keep__list li {
    padding-right: 34px;
  }

  .page-about .mv-keep__list li + li {
    padding-left: 34px;
    border-left: 1px solid rgba(26, 20, 16, 0.16);
  }
}

.page-about .mv-keep__list h3 {
  margin: 0 0 14px;
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-about .mv-keep__list p {
  margin: 0;
  max-width: 32em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  opacity: 0.82;
}

.page-about .mv-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-about .mv-more::after {
  content: "→";
  transition: transform var(--t-fast) var(--ease);
}

.page-about .mv-more:hover,
.page-about .mv-more:focus-visible {
  color: var(--violet);
  border-bottom-color: var(--violet);
}

.page-about .mv-more:hover::after {
  transform: translateX(4px);
}

/* ---------- 结尾指引 ---------- */
.page-about .mv-outro {
  padding-block: 68px 76px;
  background: var(--deep-1);
  color: var(--paper);
}

.page-about .mv-outro__line {
  margin: 0 0 30px;
  max-width: 34em;
  font-size: clamp(19px, 2.8vw, 27px);
  font-weight: 200;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .mv-outro__links {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(56, 232, 255, 0.28);
}

@media (min-width: 860px) {
  .page-about .mv-outro__links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .mv-outro__links li {
  border-bottom: 1px solid rgba(56, 232, 255, 0.18);
}

@media (min-width: 860px) {
  .page-about .mv-outro__links li + li {
    border-left: 1px solid rgba(56, 232, 255, 0.18);
  }
}

.page-about .mv-outro__links a {
  display: block;
  padding: 22px 0 24px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), padding-left var(--t-mid) var(--ease);
}

@media (min-width: 860px) {
  .page-about .mv-outro__links a {
    padding-inline: 0 24px;
  }

  .page-about .mv-outro__links li + li a {
    padding-left: 24px;
  }
}

.page-about .mv-outro__links a:hover,
.page-about .mv-outro__links a:focus-visible {
  color: var(--cyan);
}

.page-about .mv-outro__links a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .mv-cab__scan {
    animation: none;
    opacity: 0;
  }

  .page-about .mv-quote__beam {
    animation: none;
    background-position: 50% 50%;
  }

  .page-about .mv-more::after,
  .page-about .mv-team::before,
  .page-about .mv-tl__year,
  .page-about .mv-tl__mark::before,
  .page-about .mv-tl__mark::after {
    transition: none;
  }
}
<<<END>>>