.page-about {
  --about-axis-x: 5px;
  display: block;
  color: var(--white);
  font-family: var(--font-body);
}

.page-about .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .section-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: clamp(24px, 5vw, 40px);
  line-height: 1.22;
  color: var(--white);
}

.page-about .section-lede {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .section-head {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .prose {
  margin: 0 0 18px;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--white);
  opacity: 0.92;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 8px 0 clamp(40px, 7vw, 72px);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: -20% -10% auto auto;
  width: 60vw;
  height: 60vw;
  max-width: 640px;
  max-height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(11, 232, 129, 0.14), rgba(11, 232, 129, 0) 68%);
  pointer-events: none;
}

.page-about .about-hero__top {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-about .about-hero__stamp {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 16px;
  border-left: 3px solid var(--amber);
}

.page-about .about-hero__stamp-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-about .about-hero__stamp-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(64px, 15vw, 128px);
  line-height: 0.86;
  letter-spacing: -0.05em;
  color: var(--white);
}

.page-about .about-hero__stamp-meta {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-about .about-hero__text h1 {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: clamp(28px, 5.4vw, 52px);
  line-height: 1.16;
  color: var(--white);
}

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

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__media {
  position: relative;
  z-index: 1;
  margin: clamp(28px, 5vw, 48px) 0 0;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--panel);
}

.page-about .about-hero__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .media__caption {
  display: block;
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: rgba(20, 26, 32, 0.9);
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  padding: clamp(32px, 6vw, 64px) 0;
}

.page-about .about-origin__body {
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline-section {
  padding: clamp(32px, 6vw, 72px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: var(--about-axis-x);
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--amber) 0%, var(--line) 55%, var(--line) 100%);
}

.page-about .about-stage {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 0 0 32px;
}

.page-about .about-stage__axis {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .about-stage__dot {
  position: absolute;
  left: -26px;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 1px solid var(--amber);
  background: var(--ink);
  transition: background-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-about .about-stage__year {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-about .about-stage__title {
  margin: 4px 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(18px, 2.6vw, 24px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-stage__text {
  margin: 0 0 10px;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--white);
  opacity: 0.9;
}

.page-about .about-stage__detail {
  margin: 0;
  max-width: 36em;
  padding-left: 12px;
  border-left: 2px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}

.page-about .about-stage__link {
  margin: 14px 0 0;
}

.page-about .about-stage:hover .about-stage__dot,
.page-about .about-stage:focus-within .about-stage__dot {
  background: var(--amber);
  transform: scale(1.35);
}

.page-about .about-stage:hover .about-stage__detail,
.page-about .about-stage:focus-within .about-stage__detail {
  border-left-color: var(--green);
  color: var(--white);
}

.page-about .about-stage--current .about-stage__dot {
  background: var(--green);
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(11, 232, 129, 0.16);
}

.page-about .about-stage--current .about-stage__year {
  color: var(--green);
}

.page-about .about-timeline__visual {
  padding: 4px 0 36px;
  list-style: none;
}

.page-about .about-timeline__visual .media {
  max-width: 420px;
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--panel);
}

.page-about .about-timeline__visual .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: clamp(32px, 6vw, 72px) 0;
}

.page-about .about-team__panel {
  position: relative;
  padding: clamp(24px, 4vw, 44px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
}

.page-about .about-team__back {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  z-index: 0;
  filter: saturate(0.7);
}

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

.page-about .about-team__grid {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-team__item {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--green);
}

.page-about .about-team__name {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.01em;
  color: var(--white);
}

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

/* ---------- 覆盖规模 ---------- */
.page-about .about-scale {
  padding: clamp(32px, 6vw, 72px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-scale__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-about .about-scale__item {
  padding: 20px 18px;
  background: var(--ink);
}

.page-about .about-scale__num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 6vw, 44px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--green);
}

.page-about .about-scale__label {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-scale__note {
  margin: 24px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 公示识别 ---------- */
.page-about .about-trust {
  padding: 0 0 clamp(36px, 6vw, 72px);
}

.page-about .about-trust__card {
  padding: clamp(24px, 4vw, 44px);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--paper-ink);
}

.page-about .about-trust__card .section-title {
  color: var(--paper-ink);
}

.page-about .about-trust__card .eyebrow {
  color: var(--green-deep);
}

.page-about .about-trust__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(26, 31, 36, 0.18);
}

.page-about .about-trust__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(26, 31, 36, 0.18);
}

.page-about .about-trust__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(26, 31, 36, 0.6);
}

.page-about .about-trust__val {
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper-ink);
  word-break: break-word;
}

.page-about .about-trust__foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(26, 31, 36, 0.78);
}

.page-about .about-trust__foot a {
  color: var(--green-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 收束 ---------- */
.page-about .about-next {
  padding: clamp(28px, 5vw, 56px) 0 clamp(40px, 7vw, 80px);
  border-top: 1px solid var(--line-soft);
}

.page-about .about-next__title {
  margin: 0 0 22px;
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: clamp(22px, 4vw, 34px);
  line-height: 1.24;
  color: var(--white);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-timeline {
    padding-left: 34px;
  }

  .page-about .about-stage__dot {
    left: -34px;
  }

  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }

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

  .page-about .about-trust__row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__top {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: end;
  }

  .page-about .about-hero__text {
    text-align: right;
  }

  .page-about .about-hero__lede {
    margin-left: auto;
  }

  .page-about .about-hero__actions {
    justify-content: flex-end;
  }

  .page-about .about-origin__body {
    padding-left: 40px;
  }

  .page-about .about-stage {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 28px;
    padding-bottom: 40px;
  }

  .page-about .about-stage__axis {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .page-about .about-stage__year {
    font-size: 28px;
  }

  .page-about .about-stage__dot {
    left: -34px;
    top: 12px;
  }

  .page-about .about-stage__body {
    padding-top: 2px;
  }

  .page-about .about-timeline__visual .media {
    max-width: 460px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-stage__dot,
  .page-about .about-stage__detail {
    transition: none;
  }
}
<<<END>>>