.page-about {
  --about-wm: rgba(244, 239, 230, .07);
  --about-axis-w: 1px;
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-about .crumbs {
  padding-top: 22px;
  padding-bottom: 8px;
}

.page-about .crumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-about .crumb-list a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .crumb-list a:hover,
.page-about .crumb-list a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--signal);
}

.page-about .crumb-sep {
  color: var(--mist);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-block: 26px 52px;
  border-bottom: 1px solid var(--line-cyan);
}

.page-about .about-hero .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--signal);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(34px, 8.6vw, 78px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-about .about-hero__title span {
  display: block;
  margin-top: 12px;
  font-size: .58em;
  line-height: 1.16;
  letter-spacing: 0;
  color: var(--score);
}

.page-about .about-hero__lede {
  margin-top: 26px;
  max-width: 62ch;
}

.page-about .about-hero__lede p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(244, 239, 230, .82);
}

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

.page-about .hero-facts {
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line-mist);
}

.page-about .hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 14px 16px 0;
  border-bottom: 1px solid var(--line-mist);
  font-size: 13px;
  line-height: 1.5;
  color: var(--cyan);
}

.page-about .hero-facts .num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--paper);
}

/* ---------- 通用章节骨架（页面内） ---------- */

.page-about .section {
  padding-block: 56px;
  border-bottom: 1px solid var(--line-cyan);
}

.page-about .section-head {
  max-width: 58ch;
  margin-bottom: 30px;
}

.page-about .section-head .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--signal);
}

.page-about .section-title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(24px, 5.4vw, 42px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .section-note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(126, 208, 224, .86);
}

.page-about .prose p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(244, 239, 230, .84);
}

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

/* ---------- 覆盖范围 ---------- */

.page-about .about-scope__text {
  margin-bottom: 30px;
}

.page-about .about-scope__panel {
  background: var(--studio);
  border: 1px solid var(--line-mist);
  border-radius: 0;
}

.page-about .about-scope__panel .panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-about .about-scope__panel .status-dot {
  width: 7px;
  height: 7px;
  background: var(--score);
}

.page-about .about-scope__panel .panel-body {
  padding: 6px 18px 16px;
}

.page-about .scope-list {
  margin: 0;
  padding: 0;
}

.page-about .scope-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(30, 62, 80, .7);
}

.page-about .scope-row:last-child {
  border-bottom: 0;
}

.page-about .scope-row dt {
  font-size: 13px;
  color: rgba(126, 208, 224, .82);
}

.page-about .scope-row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  text-align: right;
  color: var(--paper);
}

/* ---------- 时间线 ---------- */

.page-about .about-timeline__figure {
  margin: 0 0 38px;
  border: 1px solid var(--line-mist);
}

.page-about .about-timeline__figure .media-caption {
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: rgba(126, 208, 224, .8);
  border-top: 1px solid var(--line-mist);
}

.page-about .about-timeline {
  position: relative;
  padding-left: 4px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 6px;
  bottom: 26px;
  width: var(--about-axis-w);
  background: linear-gradient(180deg, var(--signal) 0%, var(--mist) 22%, var(--line-mist) 100%);
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 40px 30px;
  overflow: hidden;
}

.page-about .tl-item:last-child {
  padding-bottom: 6px;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 13px;
  height: 13px;
  background: var(--signal);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(255, 106, 31, .14);
  z-index: 2;
}

.page-about .tl-item--now::before {
  background: var(--score);
  box-shadow: 0 0 0 4px rgba(184, 255, 60, .16);
}

.page-about .tl-ver {
  position: absolute;
  right: 0;
  top: -10px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(52px, 15vw, 108px);
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--about-wm);
  pointer-events: none;
  user-select: none;
}

.page-about .tl-year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--signal);
}

.page-about .tl-item--now .tl-year {
  color: var(--score);
}

.page-about .tl-title {
  margin: 10px 0 0;
  max-width: 26ch;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(19px, 4.6vw, 26px);
  line-height: 1.3;
  color: var(--paper);
}

.page-about .tl-text {
  margin: 12px 0 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 239, 230, .8);
}

/* ---------- 团队 ---------- */

.page-about .about-team__banner {
  margin: 0 0 34px;
  border: 1px solid var(--line-mist);
}

.page-about .about-team__banner .media-caption,
.page-about .about-team__side-figure .media-caption {
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.6;
  color: rgba(126, 208, 224, .78);
  border-top: 1px solid var(--line-mist);
}

.page-about .about-team__intro {
  margin-bottom: 24px;
}

.page-about .shift-list {
  display: grid;
  gap: 10px;
}

.page-about .shift-band {
  background: var(--studio);
  border: 1px solid var(--line-mist);
  border-left: 3px solid var(--mist);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .shift-band[open] {
  border-left-color: var(--signal);
  background: rgba(18, 39, 54, .92);
}

.page-about .shift-band summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--cyan);
}

.page-about .shift-band summary::-webkit-details-marker {
  display: none;
}

.page-about .shift-band summary:focus-visible {
  outline: 1px solid var(--signal);
  outline-offset: 2px;
}

.page-about .shift-clock {
  flex: none;
  color: var(--signal);
}

.page-about .shift-time {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .shift-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .shift-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--score);
}

.page-about .shift-band p {
  margin: 0;
  padding: 0 16px 16px 50px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(244, 239, 230, .78);
}

.page-about .about-team__side {
  margin-top: 30px;
}

.page-about .about-team__side-figure {
  margin: 0 0 16px;
  border: 1px solid var(--line-mist);
}

.page-about .about-team__note {
  padding: 18px 16px;
  background: var(--ember);
  color: var(--paper);
}

.page-about .about-team__note-num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
}

.page-about .about-team__note-num span {
  margin-left: 6px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
}

.page-about .about-team__note p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 239, 230, .92);
}

/* ---------- 栏目体系 ---------- */

.page-about .about-band {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 78%;
  gap: 1px;
  overflow-x: auto;
  padding-bottom: 12px;
  background: var(--line-mist);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-band::-webkit-scrollbar {
  height: 4px;
}

.page-about .about-band::-webkit-scrollbar-thumb {
  background: var(--mist);
}

.page-about .about-band__item {
  scroll-snap-align: start;
  padding: 20px 18px 22px;
  background: var(--studio);
  border-top: 1px solid var(--line-mist);
}

.page-about .about-band__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--signal);
}

.page-about .about-band__item h3 {
  margin: 12px 0 8px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .about-band__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(244, 239, 230, .76);
}

.page-about .about-columns__foot {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(126, 208, 224, .88);
}

/* ---------- 三条 ---------- */

.page-about .promise-grid {
  display: grid;
  gap: 1px;
  background: var(--line-mist);
  border: 1px solid var(--line-mist);
}

.page-about .promise-item {
  padding: 22px 18px 24px;
  background: var(--ink);
}

.page-about .promise-index {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--score);
}

.page-about .promise-item h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .promise-item p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: rgba(244, 239, 230, .78);
}

/* ---------- 收尾 ---------- */

.page-about .about-close {
  padding-block: 46px 54px;
  background: linear-gradient(180deg, var(--ink) 0%, var(--studio) 100%);
}

.page-about .about-close__line {
  margin: 0 0 22px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(22px, 5.2vw, 36px);
  line-height: 1.25;
  color: var(--paper);
}

.page-about .about-close__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 18px;
}

.page-about .about-close__link {
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-mist);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-close__link:hover,
.page-about .about-close__link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--signal);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-about .hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .hero-facts li {
    padding-right: 18px;
  }

  .page-about .about-band {
    grid-auto-columns: 44%;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-block: 40px 64px;
  }

  .page-about .about-hero__lede {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 34px;
    max-width: none;
  }

  .page-about .section {
    padding-block: 76px;
  }

  .page-about .section-head {
    margin-bottom: 44px;
  }

  .page-about .about-scope__text {
    margin-bottom: 0;
    padding-right: 26px;
  }

  .page-about .about-timeline {
    padding-left: 10px;
  }

  .page-about .tl-item {
    padding-left: 44px;
    padding-bottom: 52px;
  }

  .page-about .tl-item:nth-child(even) {
    padding-left: 96px;
  }

  .page-about .tl-item:nth-child(even) .tl-text {
    max-width: 48ch;
  }

  .page-about .about-team__grid {
    align-items: start;
  }

  .page-about .about-team__side {
    margin-top: 0;
    padding-left: 24px;
  }

  .page-about .about-band {
    grid-auto-columns: minmax(0, 1fr);
    grid-auto-flow: row;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    overflow-x: visible;
    padding-bottom: 0;
  }

  .page-about .about-columns__foot {
    margin-top: 26px;
  }

  .page-about .about-close {
    padding-block: 66px 74px;
  }
}
<<<END>>>