.page-about {
  --about-rail: rgba(127, 243, 232, 0.16);
  --about-rail-soft: rgba(168, 179, 214, 0.14);
  --about-glow-rose: rgba(255, 61, 127, 0.30);
  --about-glow-cyan: rgba(43, 231, 214, 0.22);
  display: block;
}

/* ---------- HERO ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(108px, 15vh, 160px);
  padding-bottom: clamp(44px, 6vw, 84px);
}

.page-about .about-hero::before,
.page-about .about-hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero::before {
  top: -28%;
  right: -16%;
  width: min(66vw, 720px);
  aspect-ratio: 1;
  background: radial-gradient(circle, var(--about-glow-rose), transparent 64%);
}

.page-about .about-hero::after {
  bottom: -48%;
  left: -20%;
  width: min(58vw, 600px);
  aspect-ratio: 1;
  background: radial-gradient(circle, var(--about-glow-cyan), transparent 66%);
}

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

.page-about .about-crumb {
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 46px);
  align-items: end;
}

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

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 8.4vw, 82px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--fog);
  margin: 14px 0 0;
}

.page-about .about-hero__mark {
  background: linear-gradient(98deg, var(--cyan) 4%, var(--rose) 88%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-hero__lead {
  margin-top: 22px;
  max-width: 34em;
  color: var(--haze);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  padding: 18px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  border-top: 1px solid var(--about-rail);
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.page-about .about-hero__k {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--haze);
}

.page-about .about-hero__v {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(14px, 2.4vw, 19px);
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-about .about-hero__media {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-rail);
  box-shadow: var(--shadow-soft);
  aspect-ratio: 4 / 3;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
}

@media (min-width: 860px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.16fr) minmax(0, 0.84fr);
    gap: clamp(32px, 4.4vw, 68px);
  }

  .page-about .about-hero__media {
    aspect-ratio: 3 / 4;
  }

  .page-about .about-hero__media img {
    aspect-ratio: 3 / 4;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero__grid {
    padding-left: 54px;
  }

  .page-about .about-anno {
    display: block;
    position: absolute;
    left: 0;
    top: 4px;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.34em;
    text-transform: uppercase;
    color: var(--haze);
    opacity: 0.72;
  }
}

/* ---------- 通用章节标题 ---------- */

.page-about .about-head {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-about .about-head__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--fog);
  margin: 0;
}

.page-about .about-head__sub {
  margin: 0;
  max-width: 34em;
  color: var(--haze);
  font-size: 16px;
  line-height: 1.75;
}

/* ---------- 时间轴 ---------- */

.page-about .about-timeline {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.page-about .about-timeline__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.26;
}

.page-about .about-timeline__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
}

.page-about .about-timeline__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--ink-900) 0%, rgba(10, 18, 48, 0.58) 40%, rgba(10, 18, 48, 0.9) 100%);
}

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

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

.page-about .about-tl::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(255, 61, 127, 0.72), rgba(43, 231, 214, 0.5) 62%, rgba(43, 231, 214, 0));
}

.page-about .about-tl__item {
  position: relative;
  padding-left: 34px;
  padding-bottom: clamp(28px, 3.6vw, 42px);
}

.page-about .about-tl__item:last-child {
  padding-bottom: 0;
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--rose);
  transform: translateX(-50%);
  box-shadow: 0 0 0 4px rgba(255, 61, 127, 0.16), 0 0 16px rgba(255, 61, 127, 0.72);
}

.page-about .about-tl__year {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(15px, 2.1vw, 19px);
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .about-tl__body {
  max-width: 38em;
}

.page-about .about-tl__name {
  margin: 0;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.4;
  font-weight: 700;
  color: var(--fog);
}

.page-about .about-tl__text {
  margin: 8px 0 0;
  color: var(--haze);
  font-size: 15.5px;
  line-height: 1.75;
}

.page-about .about-tl__more {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid rgba(43, 231, 214, 0.45);
  color: var(--haze);
  font-size: 14px;
  line-height: 1.7;
  opacity: 0.88;
}

@media (min-width: 860px) {
  .page-about .about-tl__item {
    display: grid;
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 26px;
    padding-left: 36px;
  }

  .page-about .about-tl__year {
    margin: 2px 0 0;
    text-align: right;
  }

  .page-about .about-tl__item:nth-child(even) .about-tl__body {
    max-width: 30em;
    margin-left: clamp(0px, 3vw, 44px);
  }
}

@media (min-width: 860px) and (hover: hover) {
  .page-about .about-tl__more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    border-left-color: transparent;
    transition: max-height 0.42s var(--ease), opacity 0.3s var(--ease), margin-top 0.3s var(--ease), border-left-color 0.3s var(--ease);
  }

  .page-about .about-tl__item:hover .about-tl__more,
  .page-about .about-tl__item:focus-within .about-tl__more {
    max-height: 160px;
    opacity: 0.92;
    margin-top: 12px;
    border-left-color: rgba(43, 231, 214, 0.45);
  }
}

/* ---------- 团队仪表条 ---------- */

.page-about .about-team__strip {
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-rail);
  background: linear-gradient(135deg, rgba(19, 28, 66, 0.92), rgba(10, 18, 48, 0.5));
  box-shadow: var(--shadow-card);
  padding: clamp(24px, 4vw, 50px);
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

.page-about .about-team__big {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-about .about-team__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(66px, 13vw, 128px);
  line-height: 0.84;
  letter-spacing: -0.045em;
  background: linear-gradient(158deg, var(--fog) 6%, var(--cyan) 56%, var(--rose) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-team__unit {
  font-family: var(--font-mono);
  font-size: clamp(14px, 2vw, 18px);
  color: var(--haze);
  letter-spacing: 0.1em;
}

.page-about .about-team__cap {
  margin: 14px 0 0;
  color: var(--haze);
  letter-spacing: 0.1em;
  font-size: 11px;
  line-height: 1.7;
}

.page-about .about-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
}

.page-about .about-team__item {
  padding-top: 16px;
  border-top: 1px solid var(--about-rail-soft);
  min-width: 0;
}

.page-about .about-team__n {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: 0.04em;
  color: var(--cyan);
  margin-bottom: 8px;
}

.page-about .about-team__name {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--fog);
}

.page-about .about-team__text {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--haze);
}

@media (min-width: 640px) {
  .page-about .about-team__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 960px) {
  .page-about .about-team__strip {
    grid-template-columns: minmax(0, 0.7fr) minmax(0, 2fr);
    align-items: center;
  }
}

/* ---------- 覆盖 ---------- */

.page-about .about-reach__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4.4vw, 56px);
  align-items: center;
}

.page-about .about-reach__text {
  margin: 16px 0 0;
  max-width: 32em;
  color: var(--haze);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .about-reach__stats {
  list-style: none;
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.page-about .about-reach__stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 16px;
  border-left: 2px solid var(--gold);
}

.page-about .about-reach__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 3.6vw, 34px);
  letter-spacing: 0.02em;
  color: var(--fog);
}

.page-about .about-reach__cap {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--haze);
}

.page-about .about-matrix {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 8px;
}

.page-about .about-matrix > li {
  aspect-ratio: 1;
  border-radius: 4px;
  background: rgba(127, 243, 232, 0.09);
  border: 1px solid rgba(127, 243, 232, 0.18);
  transition: background 0.32s var(--ease), transform 0.32s var(--ease), opacity 0.32s var(--ease), border-color 0.32s var(--ease);
}

.page-about .about-matrix > li:nth-child(7n + 3),
.page-about .about-matrix > li:nth-child(7n + 6) {
  background: rgba(255, 61, 127, 0.16);
  border-color: rgba(255, 61, 127, 0.3);
}

.page-about .about-matrix:hover > li {
  opacity: 0.3;
}

.page-about .about-matrix > li:hover {
  opacity: 1;
  transform: scale(1.16);
  background: rgba(43, 231, 214, 0.82);
  border-color: rgba(127, 243, 232, 0.9);
}

.page-about .about-reach__legend {
  margin: 14px 0 0;
  font-size: 11px;
  letter-spacing: 0.12em;
}

@media (min-width: 900px) {
  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .about-matrix {
    gap: 10px;
  }
}

/* ---------- 三次改进 ---------- */

.page-about .about-shifts__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
}

.page-about .about-shift {
  position: relative;
  padding: clamp(20px, 3vw, 30px) clamp(18px, 3vw, 28px);
  border-radius: var(--radius-md);
  border: 1px solid var(--about-rail-soft);
  background: rgba(19, 28, 66, 0.56);
  min-width: 0;
  transition: transform 0.34s var(--ease), border-color 0.34s var(--ease);
}

.page-about .about-shift:hover {
  transform: translateY(-4px);
  border-color: rgba(127, 243, 232, 0.4);
}

.page-about .about-shift__idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--rose);
  margin-bottom: 14px;
}

.page-about .about-shift__name {
  margin: 0;
  font-size: clamp(17px, 2.2vw, 20px);
  font-weight: 700;
  color: var(--fog);
  line-height: 1.4;
}

.page-about .about-shift__text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--haze);
}

.page-about .about-shift__cmp {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--about-rail-soft);
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
}

.page-about .about-shift__from {
  color: var(--haze);
  opacity: 0.78;
  text-decoration: line-through;
  text-decoration-color: rgba(168, 179, 214, 0.45);
}

.page-about .about-shift__to {
  color: var(--cyan);
}

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

  .page-about .about-shift:nth-child(2) {
    margin-top: 26px;
  }

  .page-about .about-shift:nth-child(3) {
    margin-top: 52px;
  }
}

/* ---------- 发布节奏 ---------- */

.page-about .about-release__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 56px);
  align-items: center;
}

.page-about .about-release__media {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-rail);
}

.page-about .about-release__media img {
  display: block;
  max-width: 100%;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-release__text {
  margin: 16px 0 0;
  max-width: 34em;
  color: var(--haze);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .about-release__dl {
  margin: clamp(22px, 3vw, 32px) 0 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--about-rail-soft);
}

.page-about .about-release__dl > div {
  display: grid;
  grid-template-columns: 7.5em minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--about-rail-soft);
}

.page-about .about-release__dl dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .about-release__dl dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.66;
  color: var(--fog);
}

.page-about .about-release__btn {
  margin-top: clamp(22px, 3vw, 30px);
}

@media (min-width: 900px) {
  .page-about .about-release__grid {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
    gap: clamp(32px, 4.6vw, 68px);
  }
}

/* ---------- 联络 ---------- */

.page-about .about-contact__box {
  border-top: 1px solid var(--about-rail);
  padding-top: clamp(28px, 4vw, 48px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 56px);
}

.page-about .about-contact__text {
  margin: 16px 0 0;
  max-width: 34em;
  color: var(--haze);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-about .about-contact__links {
  margin: 20px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 14.5px;
}

.page-about .about-contact__links a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 231, 214, 0.35);
  padding-bottom: 2px;
  transition: color 0.28s var(--ease), border-color 0.28s var(--ease);
}

.page-about .about-contact__links a:hover,
.page-about .about-contact__links a:focus-visible {
  color: var(--rose-soft);
  border-bottom-color: rgba(255, 123, 166, 0.6);
}

.page-about .about-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.page-about .about-contact__list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px solid var(--about-rail-soft);
}

.page-about .about-contact__list li:first-child {
  padding-top: 0;
}

.page-about .about-contact__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--haze);
}

.page-about .about-contact__v {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--fog);
  word-break: break-word;
}

@media (min-width: 760px) {
  .page-about .about-contact__list li {
    grid-template-columns: 12em minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-about .about-contact__box {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(36px, 5vw, 72px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-shift,
  .page-about .about-tl__more,
  .page-about .about-matrix > li,
  .page-about .about-contact__links a {
    transition: none;
  }

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

  .page-about .about-matrix > li:hover {
    transform: none;
  }
}