.page-about {
  --about-gap: clamp(56px, 9vw, 96px);
  --about-line: rgba(244, 239, 227, 0.14);
  --about-line-soft: rgba(244, 239, 227, 0.08);
  --about-glass: rgba(16, 44, 36, 0.55);
  background: var(--night);
  color: var(--paper);
  overflow-x: clip;
  padding-bottom: clamp(40px, 7vw, 80px);
}

.page-about .mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .about-crumb {
  padding-top: calc(var(--header-h) + 20px);
  padding-bottom: 4px;
  font-size: 13px;
}

.page-about .about-crumb .breadcrumb__link {
  color: var(--moss);
  text-decoration: none;
}

.page-about .about-crumb .breadcrumb__link:hover {
  color: var(--tape);
}

.page-about .about-crumb .breadcrumb__sep {
  margin: 0 8px;
  color: var(--sage);
}

.page-about .about-crumb .breadcrumb__current {
  color: var(--paper-2);
}

/* ---------- 开篇 ---------- */
.page-about .about-open {
  padding-top: clamp(24px, 5vw, 48px);
  padding-bottom: clamp(36px, 6vw, 64px);
}

.page-about .about-open__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--tape);
}

.page-about .about-open__title {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.9rem, 6.4vw, 4.1rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 20ch;
}

.page-about .about-open__lede {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.68;
  color: var(--paper-2);
}

.page-about .about-index {
  list-style: none;
  margin: clamp(28px, 5vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  grid-template-columns: 1fr;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 13px 16px;
  background: var(--night);
  color: var(--paper-2);
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.4;
  transition: background 180ms var(--ease), color 180ms var(--ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  background: var(--alley);
  color: var(--paper);
}

.page-about .about-index__no {
  font-size: 12px;
  color: var(--pitch);
  flex: 0 0 auto;
}

.page-about .about-index__link:hover .about-index__no {
  color: var(--tape);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-sec {
  padding-block: var(--about-gap);
}

.page-about .about-head {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 14px;
  row-gap: 6px;
  align-items: start;
  margin-bottom: clamp(20px, 3.4vw, 32px);
}

.page-about .about-head .chapter-no {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--tape);
  padding-top: 6px;
}

.page-about .about-head__tag {
  display: none;
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--sage);
  padding-top: 4px;
}

.page-about .about-head__title {
  grid-column: 2;
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.45rem, 4.4vw, 2.6rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-lede {
  margin: 0 0 clamp(22px, 4vw, 36px);
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.68;
  color: var(--moss);
}

.page-about .about-sub {
  margin: 0 0 10px;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  color: var(--paper);
}

.page-about .prose p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--paper-2);
}

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

/* ---------- 缘起 ---------- */
.page-about .about-origin {
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .about-facts {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px dashed var(--about-line);
}

.page-about .about-facts li {
  padding: 11px 0;
  border-bottom: 1px dashed var(--about-line);
  font-size: 14px;
  line-height: 1.55;
  color: var(--moss);
}

.page-about .about-facts .mono {
  color: var(--dusk);
  margin-right: 8px;
  font-weight: 700;
}

.page-about .about-origin__media {
  margin: 0;
}

.page-about .about-origin__media .media__img {
  display: block;
  width: 100%;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  filter: saturate(1.05) contrast(1.02);
}

.page-about .media__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--sage);
}

/* ---------- 时间轴 ---------- */
.page-about .about-sec--timeline {
  background:
    linear-gradient(180deg, rgba(90, 31, 43, 0.35), rgba(11, 31, 26, 0) 55%),
    var(--night);
}

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

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 10px;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--wine), var(--pitch) 72%, var(--tape));
}

.page-about .tl__node {
  position: relative;
  padding: 16px 0 22px 34px;
  outline: none;
}

.page-about .tl__node::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 22px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--night);
  border: 2px solid var(--sage);
  transition: background 180ms var(--ease), border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-about .tl__node:hover::before,
.page-about .tl__node:focus-visible::before {
  background: var(--tape);
  border-color: var(--tape);
  transform: scale(1.12);
}

.page-about .tl__year {
  font-size: clamp(1.5rem, 5.6vw, 2.1rem);
  font-weight: 700;
  line-height: 1;
  color: var(--dusk);
  margin-bottom: 8px;
}

.page-about .tl__node:hover .tl__year,
.page-about .tl__node:focus-visible .tl__year {
  color: var(--tape);
}

.page-about .tl__tag {
  display: inline-block;
  margin: 0 0 6px;
  padding: 2px 8px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--night);
  background: var(--tape);
  border-radius: 2px;
  transform: skewX(-6deg);
}

.page-about .tl__title {
  margin: 0 0 6px;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1rem, 2.8vw, 1.2rem);
  line-height: 1.35;
  color: var(--paper);
}

.page-about .tl__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.62;
  color: var(--moss);
  max-width: 42ch;
}

.page-about .tl__more {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--paper);
  border-left: 2px solid var(--dusk);
  padding-left: 10px;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 220ms var(--ease), opacity 220ms var(--ease), margin 220ms var(--ease);
}

.page-about .tl__node:hover .tl__more,
.page-about .tl__node:focus-visible .tl__more {
  max-height: 6em;
  opacity: 1;
  margin-top: 10px;
}

.page-about .tl__node:hover .tl__note,
.page-about .tl__node:focus-visible .tl__note {
  color: var(--paper-2);
}

/* ---------- 编辑台 ---------- */
.page-about .about-sec--desk {
  background: linear-gradient(180deg, rgba(16, 44, 36, 0.9), rgba(11, 31, 26, 1));
}

.page-about .about-desk__media {
  margin: 0 0 clamp(24px, 4vw, 40px);
}

.page-about .about-desk__media .media__img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-about .about-desk__grid {
  display: grid;
  gap: clamp(20px, 4vw, 40px);
  align-items: start;
  margin-bottom: clamp(28px, 5vw, 48px);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.page-about .about-stat {
  border-left: 3px solid var(--dusk);
  padding: 2px 0 2px 12px;
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.9rem, 7vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--tape);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--moss);
}

.page-about .about-shift-wrap {
  margin-top: clamp(8px, 2vw, 16px);
}

.page-about .about-shift__legend {
  margin: 0 0 14px;
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--sage);
}

.page-about .shift__key {
  display: inline-block;
  margin-right: 4px;
  padding: 1px 7px;
  font-size: 11px;
  color: var(--paper);
  border: 1px solid var(--about-line);
  border-radius: 2px;
}

.page-about .shift {
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  background: var(--about-glass);
  backdrop-filter: blur(14px);
  overflow: hidden;
}

.page-about .shift__row {
  display: grid;
  gap: 10px;
  padding: 16px;
  border-top: 1px solid var(--about-line-soft);
  outline: none;
  transition: background 180ms var(--ease);
}

.page-about .shift__row:first-child {
  border-top: 0;
}

.page-about .shift__row:hover,
.page-about .shift__row:focus-visible {
  background: rgba(224, 138, 46, 0.12);
}

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

.page-about .shift__time {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dusk);
}

.page-about .shift__name {
  font-size: 13px;
  color: var(--paper-2);
}

.page-about .shift__days {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(94px, 1fr));
  gap: 6px;
}

.page-about .shift__day {
  padding: 6px 8px;
  font-size: 12px;
  line-height: 1.4;
  color: var(--paper-2);
  background: rgba(244, 239, 227, 0.07);
  border-left: 2px solid var(--pitch);
  border-radius: 3px;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

.page-about .shift__row:hover .shift__day,
.page-about .shift__row:focus-visible .shift__day {
  background: rgba(244, 239, 227, 0.12);
}

.page-about .shift__note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--tape);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 220ms var(--ease), opacity 220ms var(--ease), margin 220ms var(--ease);
}

.page-about .shift__row:hover .shift__note,
.page-about .shift__row:focus-visible .shift__note {
  max-height: 5em;
  opacity: 1;
  margin-top: 2px;
}

/* ---------- 观赛点 ---------- */
.page-about .about-venues {
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .about-venues__media {
  margin: 0;
}

.page-about .about-venues__media .media__img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-about .venue-nums {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 16px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--about-line);
}

.page-about .venue-num__num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(2.1rem, 8vw, 3.2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--dusk);
}

.page-about .venue-num__label {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--moss);
}

.page-about .venue-services {
  list-style: none;
  margin: clamp(26px, 5vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-about .venue-services__item {
  padding: 20px 18px;
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--alley);
  position: relative;
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-about .venue-services__item:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.35);
}

.page-about .venue-services__item:nth-child(2) {
  transform: rotate(-1.2deg);
}

.page-about .venue-services__item:nth-child(2):hover {
  transform: rotate(0deg) translateY(-4px);
}

.page-about .venue-services__no {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--pitch);
}

.page-about .venue-services__title {
  margin: 0 0 8px;
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.05rem;
  line-height: 1.3;
  color: var(--ink-deep);
}

.page-about .venue-services__item p:last-child {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.62;
  color: #2f443b;
}

/* ---------- 版本 ---------- */
.page-about .about-sec--versions {
  background:
    linear-gradient(180deg, rgba(90, 31, 43, 0.28), rgba(11, 31, 26, 0) 60%),
    var(--night);
}

.page-about .ver {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .ver__item {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 14px;
  padding: 20px 18px;
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--pitch);
  border-radius: var(--radius);
  background: var(--about-glass);
  backdrop-filter: blur(12px);
  transition: border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-about .ver__item:hover {
  border-left-color: var(--tape);
  background: rgba(16, 44, 36, 0.72);
}

.page-about .ver__no {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dusk);
  line-height: 1.2;
}

.page-about .ver__title {
  margin: 0 0 6px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .ver__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--moss);
}

.page-about .ver__item--client {
  border-left-color: var(--dusk);
}

.page-about .ver__item--client .ver__no {
  color: var(--tape);
}

/* ---------- 往下走 ---------- */
.page-about .about-sec--next {
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .next-card {
  display: block;
  padding: 22px 20px 20px;
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink-deep);
  text-decoration: none;
  border-top: 4px solid var(--pitch);
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .next-card:hover,
.page-about .next-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.4);
  border-top-color: var(--dusk);
}

.page-about .next-card__label {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--pitch);
}

.page-about .next-card__title {
  margin: 8px 0 8px;
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.15rem;
  line-height: 1.3;
  color: var(--night);
}

.page-about .next-card p {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.62;
  color: #2f443b;
}

.page-about .next-card__go {
  font-size: 13px;
  font-weight: 700;
  color: var(--dusk);
  letter-spacing: 0.02em;
}

.page-about .about-next__back {
  margin: clamp(24px, 4vw, 36px) 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--moss);
}

.page-about .about-next__back a {
  color: var(--tape);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 620px) {
  .page-about .about-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 860px) {
  .page-about .about-head {
    grid-template-columns: auto auto 1fr;
    column-gap: 18px;
    align-items: start;
  }

  .page-about .about-head__tag {
    display: block;
    min-height: 66px;
  }

  .page-about .about-head__title {
    grid-column: 3;
  }

  .page-about .about-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-origin__media {
    margin-right: -40px;
  }

  .page-about .tl::before {
    left: 50%;
    transform: translateX(-1.5px);
  }

  .page-about .tl__node {
    display: grid;
    grid-template-columns: 1fr 150px 1fr;
    align-items: start;
    gap: 0;
    padding: 26px 0;
  }

  .page-about .tl__node::before {
    left: calc(50% - 8px);
    top: 32px;
  }

  .page-about .tl__year {
    grid-column: 2;
    justify-self: center;
    text-align: center;
    margin: 0;
    font-size: clamp(1.8rem, 3vw, 2.3rem);
  }

  .page-about .tl__body {
    grid-column: 3;
    padding-left: 30px;
    text-align: left;
  }

  .page-about .tl__node:nth-child(even) .tl__body {
    grid-column: 1;
    padding-left: 0;
    padding-right: 30px;
    text-align: right;
  }

  .page-about .tl__node:nth-child(even) .tl__note,
  .page-about .tl__node:nth-child(even) .tl__more {
    margin-left: auto;
  }

  .page-about .tl__node:nth-child(even) .tl__more {
    border-left: 0;
    border-right: 2px solid var(--dusk);
    padding-left: 0;
    padding-right: 10px;
  }

  .page-about .about-desk__grid {
    grid-template-columns: 7fr 5fr;
  }

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

  .page-about .shift__row {
    grid-template-columns: 170px 1fr;
    align-items: center;
    padding: 18px 20px;
  }

  .page-about .shift__note {
    grid-column: 1 / -1;
  }

  .page-about .about-venues__media {
    margin-left: -24px;
  }

  .page-about .venue-services {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .ver__item {
    grid-template-columns: 96px 1fr;
    padding: 24px 22px;
  }

  .page-about .next-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .about-open__title {
    max-width: 22ch;
  }

  .page-about .shift__days {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl__node,
  .page-about .tl__node::before,
  .page-about .tl__more,
  .page-about .shift__note,
  .page-about .shift__row,
  .page-about .venue-services__item,
  .page-about .next-card {
    transition: none;
  }

  .page-about .next-card:hover,
  .page-about .venue-services__item:hover {
    transform: none;
  }
}
<<<END>>>