.page-about {
  background: var(--ink);
  color: var(--mist);
  overflow: hidden;
  padding-bottom: clamp(36px, 6vw, 80px);
}

/* ---------- 面包屑 ---------- */
.page-about .gl-breadcrumb {
  padding-top: clamp(16px, 2.6vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: 0 clamp(32px, 5vw, 64px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.5vw, 48px);
  margin-top: clamp(20px, 3.5vw, 38px);
}

.page-about .about-hero__copy .gl-title {
  font-weight: 800;
  font-size: clamp(30px, 7.2vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
  margin: 14px 0 18px;
  max-width: 18ch;
}

.page-about .about-hero__copy .gl-lead {
  margin: 0;
  font-size: clamp(15px, 2.1vw, 18px);
  line-height: 1.85;
  color: var(--mist);
  max-width: 60ch;
}

.page-about .about-hero__body {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--teal);
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 60ch;
}

.page-about .about-hero__aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-about .about-vert {
  display: inline-block;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.34em;
  font-family: var(--font-num);
  font-size: 10px;
  color: var(--cyan);
  align-self: flex-start;
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-facts__item {
  background: var(--carbon);
  padding: 14px 10px;
  transition: background 0.3s var(--ease);
}

.page-about .about-facts__item:hover {
  background: var(--teal);
}

.page-about .about-facts__item dt {
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--muted);
  line-height: 1.4;
}

.page-about .about-facts__item dd {
  margin: 8px 0 0;
  font-family: var(--font-num);
  font-size: clamp(18px, 3.6vw, 26px);
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
}

.page-about .about-visual__figure {
  margin: clamp(26px, 4.5vw, 52px) 0 0;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line);
  background: linear-gradient(155deg, var(--teal) 0%, var(--ink) 72%);
}

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

/* ---------- 三原则 ---------- */
.page-about .about-principles {
  padding-block: 0;
}

.page-about .about-principles__head {
  padding-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-principles__head .gl-lead {
  margin: 14px 0 0;
  max-width: 62ch;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-principles__band {
  border-block: 1px solid var(--line);
  padding-block: clamp(6px, 1vw, 10px);
}

.page-about .about-principles__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
}

.page-about .about-principle {
  background: var(--ink);
  padding: clamp(22px, 3vw, 34px) clamp(18px, 2.4vw, 28px);
  transition: background 0.35s var(--ease);
}

.page-about .about-principle:hover,
.page-about .about-principle:focus-within {
  background: var(--teal);
}

.page-about .about-principle__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(34px, 6vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: rgba(53, 224, 200, 0.24);
  transition: color 0.35s var(--ease);
}

.page-about .about-principle:hover .about-principle__num,
.page-about .about-principle:focus-within .about-principle__num {
  color: var(--cyan);
}

.page-about .about-principle .gl-h3 {
  margin: 18px 0 12px;
  color: var(--white);
}

.page-about .about-principle p {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 42ch;
}

.page-about .about-principle .about-principle__use {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  padding-block: clamp(40px, 7vw, 88px);
  border-top: 1px solid var(--line);
  isolation: isolate;
}

.page-about .about-timeline__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.2;
  pointer-events: none;
}

.page-about .about-timeline__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.7);
}

.page-about .about-timeline__inner {
  position: relative;
}

.page-about .about-timeline__head .gl-lead {
  margin: 14px 0 0;
  max-width: 58ch;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-timeline__list {
  list-style: none;
  margin: clamp(26px, 4.5vw, 48px) 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--line) 42%, transparent 100%);
}

.page-about .about-node {
  position: relative;
  padding: 0 0 clamp(26px, 3.6vw, 42px) clamp(28px, 4vw, 46px);
  outline: none;
}

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

.page-about .about-node__marker {
  position: absolute;
  left: 0;
  top: 5px;
  width: 15px;
  height: 15px;
  background: var(--ink);
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
  transition: background 0.3s var(--ease), transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .about-node:hover .about-node__marker,
.page-about .about-node:focus-visible .about-node__marker {
  background: var(--cyan);
  border-color: var(--cyan);
  transform: rotate(45deg) scale(1.18);
}

.page-about .about-node:focus-visible .about-node__marker {
  box-shadow: 0 0 0 3px rgba(53, 224, 200, 0.28);
}

.page-about .about-node__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
}

.page-about .about-node__clock {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .about-node .gl-h3 {
  margin: 0 0 10px;
  color: var(--white);
}

.page-about .about-node__body > p {
  margin: 0 0 8px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 62ch;
}

.page-about .about-node__detail {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
  border-left: 1px solid var(--line);
  padding-left: 12px;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding-block: clamp(38px, 6vw, 76px);
  border-top: 1px solid var(--line);
}

.page-about .about-team__head .gl-lead {
  margin: 14px 0 0;
  max-width: 60ch;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(24px, 4vw, 42px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-team__stat {
  background: var(--carbon);
  padding: clamp(18px, 2.6vw, 26px);
  transition: background 0.3s var(--ease);
}

.page-about .about-team__stat:hover {
  background: var(--teal);
}

.page-about .about-team__value {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(32px, 6vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--orange);
}

.page-about .about-team__stat--wide .about-team__value {
  color: var(--cyan);
}

.page-about .about-team__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--white);
}

.page-about .about-team__stat p {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-team__note {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: flex-start;
  margin-top: clamp(22px, 3.5vw, 34px);
  padding-top: clamp(20px, 3vw, 28px);
  border-top: 1px solid var(--line);
}

.page-about .about-team__note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--mist);
  max-width: 68ch;
}

/* ---------- 认证 ---------- */
.page-about .about-cert {
  padding-block: clamp(38px, 6vw, 76px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, transparent, rgba(15, 61, 52, 0.32));
}

.page-about .about-cert__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 52px);
  align-items: start;
}

.page-about .about-cert__figure {
  margin: 0;
  border: 1px solid var(--line);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 45%, rgba(53, 224, 200, 0.16), var(--ink) 68%);
  max-width: 420px;
}

.page-about .about-cert__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.page-about .about-cert__lead {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
  max-width: 58ch;
}

.page-about .about-cert__list {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-cert__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  background: var(--ink);
  padding: clamp(16px, 2.4vw, 22px) 0;
}

.page-about .about-cert__glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  color: var(--cyan);
  flex: none;
}

.page-about .about-cert__item .gl-h3 {
  margin: 0 0 8px;
  color: var(--white);
}

.page-about .about-cert__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 56ch;
}

/* ---------- 区域 ---------- */
.page-about .about-region {
  padding-block: clamp(38px, 6vw, 76px);
  border-top: 1px solid var(--line);
}

.page-about .about-region__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .about-region__copy p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--mist);
  max-width: 62ch;
}

.page-about .about-region__copy .gl-h2 {
  margin-bottom: 16px;
}

.page-about .about-region__list {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-region__list li {
  background: var(--carbon);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-region__k {
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-about .about-region__v {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
}

.page-about .about-region__panel {
  border: 1px solid var(--line);
  background: var(--teal);
  padding: clamp(20px, 3vw, 28px);
}

.page-about .about-region__panel-title {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-region__panel p {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding-block: clamp(30px, 5vw, 60px) 0;
}

.page-about .about-cta__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line);
  background: linear-gradient(120deg, var(--carbon) 0%, var(--ink) 62%);
  position: relative;
}

.page-about .about-cta__panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan), var(--orange));
}

.page-about .about-cta__text p {
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 58ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-team__note {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

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

  .page-about .about-cta__panel {
    grid-template-columns: minmax(0, 1.6fr) minmax(200px, 0.8fr);
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(210px, 0.62fr);
    align-items: start;
  }

  .page-about .about-hero__aside {
    border-top: none;
    border-left: 1px solid var(--line);
    padding-top: 0;
    padding-left: clamp(18px, 2.6vw, 30px);
    flex-direction: row;
    align-items: flex-start;
    gap: 20px;
  }

  .page-about .about-vert {
    max-height: 220px;
  }

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

  .page-about .about-cert__inner {
    grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.6fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-region__inner {
    grid-template-columns: minmax(0, 1.75fr) minmax(240px, 0.75fr);
  }
}

@media (hover: hover) and (min-width: 700px) {
  .page-about .about-node__detail {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    margin-top: 0;
    transition: max-height 0.4s var(--ease), opacity 0.28s var(--ease), margin-top 0.4s var(--ease);
  }

  .page-about .about-node:hover .about-node__detail,
  .page-about .about-node:focus-within .about-node__detail {
    max-height: 200px;
    opacity: 1;
    margin-top: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-about .about-node__detail {
    max-height: none !important;
    opacity: 1 !important;
    margin-top: 8px !important;
  }
}
<<<END>>>