.page-about {
  --about-max: 1180px;
  --about-pad: clamp(18px, 4.2vw, 32px);
  --about-cut: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  --about-cut-sm: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  color: var(--ice);
}

.page-about .about-wrap {
  width: 100%;
  max-width: var(--about-max);
  margin-inline: auto;
  padding: clamp(18px, 3.6vw, 36px) var(--about-pad) clamp(56px, 8vw, 96px);
  display: grid;
  gap: clamp(46px, 7vw, 88px);
}

/* 面包屑 */
.page-about .breadcrumbs {
  margin: 0;
}

/* 首屏 */
.page-about .about-hero {
  display: grid;
  gap: clamp(26px, 4vw, 40px);
  align-items: end;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  color: var(--ice);
}

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

.page-about .about-hero__lede {
  margin-top: 18px;
  max-width: 52ch;
  color: var(--mist);
}

.page-about .about-hero__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .about-hero__dial {
  display: flex;
  justify-content: center;
}

.page-about .about-dial {
  position: relative;
  width: min(320px, 78vw);
  aspect-ratio: 1 / 1;
}

.page-about .about-dial__ring {
  width: 100%;
  height: 100%;
  display: block;
  animation: about-breathe 6s var(--ease) infinite;
}

.page-about .about-dial__center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-about .about-dial__mark {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ice);
  background: var(--ink-950);
  padding: 1px 5px;
  border: 1px solid var(--line);
}

.page-about .about-dial__mark--a {
  top: 4%;
  left: 50%;
  transform: translateX(-50%);
  color: var(--cyan);
  border-color: rgba(47, 243, 224, 0.45);
}

.page-about .about-dial__mark--b {
  top: 50%;
  right: 0;
  transform: translateY(-50%);
}

.page-about .about-dial__mark--c {
  bottom: 4%;
  left: 50%;
  transform: translateX(-50%);
}

.page-about .about-dial__mark--d {
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  color: var(--orange);
  border-color: rgba(255, 122, 26, 0.45);
}

@keyframes about-breathe {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.72; }
}

/* 用户规模条 */
.page-about .about-strip {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: var(--about-cut-sm);
}

.page-about .about-strip__item {
  background: var(--ink-900);
  padding: 16px 14px;
  display: grid;
  gap: 4px;
}

.page-about .about-strip__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 5vw, 32px);
  font-weight: 700;
  line-height: 1;
  color: var(--ice);
}

.page-about .about-strip__num small {
  font-size: 0.5em;
  color: var(--mist);
  margin-left: 2px;
}

.page-about .about-strip__label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* 斜切分隔线 */
.page-about .about-slash {
  height: 2px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--violet) 42%, rgba(255, 122, 26, 0.8) 70%, transparent 100%);
  transform: rotate(-1.1deg);
  transform-origin: left center;
  margin-block: -14px;
}

/* 品牌起点 */
.page-about .about-origin {
  position: relative;
  overflow: hidden;
  clip-path: var(--about-cut);
  border: 1px solid var(--line);
  background: var(--ink-950);
  isolation: isolate;
}

.page-about .about-origin__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
  z-index: -2;
}

.page-about .about-origin::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(115deg, rgba(6, 17, 31, 0.94) 18%, rgba(11, 31, 54, 0.82) 58%, rgba(18, 48, 79, 0.55) 100%),
    repeating-linear-gradient(115deg, rgba(157, 183, 200, 0.06) 0 1px, transparent 1px 22px);
}

.page-about .about-origin__body {
  padding: clamp(24px, 4.6vw, 56px);
  max-width: 60ch;
}

.page-about .about-origin__body .section-title {
  margin-top: 10px;
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.18;
}

.page-about .about-origin__body > p {
  margin-top: 14px;
  color: var(--mist);
  line-height: 1.62;
}

.page-about .about-origin__points {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
}

.page-about .about-origin__points li {
  background: rgba(11, 31, 54, 0.78);
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-origin__k {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--cyan);
  margin-bottom: 4px;
  letter-spacing: 0.02em;
}

.page-about .about-origin__foot {
  margin-top: 20px;
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  font-size: 14px;
  color: var(--ice);
}

/* 区块标题通用 */
.page-about .about-secthead {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(22px, 3.4vw, 34px);
  max-width: 62ch;
}

.page-about .about-secthead .section-title {
  font-size: clamp(23px, 4.2vw, 34px);
  line-height: 1.2;
}

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

/* 时间轴 */
.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 34px;
  display: grid;
  gap: 14px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(139, 92, 246, 0.75) 55%, rgba(255, 122, 26, 0.6));
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 18px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink-950);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 14px rgba(47, 243, 224, 0.5);
}

.page-about .about-timeline__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--orange);
  margin-bottom: 6px;
}

.page-about .about-timeline__item .disclosure {
  border: 1px solid var(--line);
  background: var(--panel);
  clip-path: var(--about-cut-sm);
}

.page-about .about-timeline__item .disclosure__trigger {
  padding: 14px 16px;
}

.page-about .about-timeline__item .disclosure__panel p {
  margin: 0;
  padding: 0 16px 16px;
  font-size: 14px;
  line-height: 1.66;
  color: var(--mist);
}

.page-about .about-years__foot {
  margin: 22px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--mist);
}

/* 团队 */
.page-about .about-team {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-about .about-team__intro {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .about-team__intro .section-title {
  font-size: clamp(23px, 4.2vw, 34px);
  line-height: 1.2;
}

.page-about .about-team__intro > p {
  color: var(--mist);
  line-height: 1.66;
  margin: 0;
  max-width: 58ch;
}

.page-about .about-team__pic {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  margin-top: 8px;
  object-fit: cover;
  clip-path: var(--about-cut-sm);
  border: 1px solid var(--line);
  filter: saturate(1.05) contrast(1.02);
}

.page-about .about-team__side {
  display: grid;
  gap: 18px;
  align-content: start;
}

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

.page-about .about-team__stats li {
  background: var(--ink-900);
  padding: 14px 12px;
  display: grid;
  gap: 6px;
}

.page-about .about-team__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4.4vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-team__cap {
  font-size: 12px;
  line-height: 1.4;
  color: var(--mist);
}

.page-about .about-roles {
  display: grid;
  gap: 8px;
}

.page-about .about-roles__title {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ice);
}

.page-about .about-roles .disclosure {
  border: 1px solid var(--line);
  background: rgba(18, 48, 79, 0.55);
}

.page-about .about-roles .disclosure__trigger {
  padding: 12px 14px;
}

.page-about .about-roles .disclosure__panel p {
  margin: 0;
  padding: 0 14px 14px;
  font-size: 13.5px;
  line-height: 1.64;
  color: var(--mist);
}

/* 校验流程 */
.page-about .about-check {
  display: grid;
  gap: clamp(22px, 3.4vw, 32px);
  padding: clamp(22px, 4vw, 42px);
  background: linear-gradient(160deg, var(--ink-900), var(--ink-950) 70%);
  border: 1px solid var(--line);
  clip-path: var(--about-cut);
}

.page-about .about-check__head {
  display: grid;
  gap: 10px;
  max-width: 62ch;
}

.page-about .about-check__head .section-title {
  font-size: clamp(23px, 4.2vw, 34px);
  line-height: 1.2;
}

.page-about .about-check__head p {
  margin: 0;
  color: var(--mist);
  line-height: 1.66;
  font-size: 14.5px;
}

.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-flow__step {
  background: rgba(18, 48, 79, 0.62);
  padding: 18px 16px;
  display: grid;
  gap: 8px;
  position: relative;
}

.page-about .about-flow__step::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan), rgba(139, 92, 246, 0.5));
}

.page-about .about-flow__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .about-flow__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--ice);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.64;
  color: var(--mist);
}

.page-about .about-check__figure {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-check__figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-about .about-check__figure figcaption {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
  border-left: 2px solid var(--violet);
  padding-left: 10px;
}

/* 合作网络 */
.page-about .about-network__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-network__card {
  padding: 22px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--about-cut-sm);
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-about .about-network__card--cyan {
  background: linear-gradient(150deg, rgba(47, 243, 224, 0.14), rgba(18, 48, 79, 0.9) 62%);
}

.page-about .about-network__card--orange {
  background: linear-gradient(150deg, rgba(255, 122, 26, 0.16), rgba(18, 48, 79, 0.9) 62%);
}

.page-about .about-network__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ice);
  opacity: 0.85;
}

.page-about .about-network__num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 7vw, 48px);
  font-weight: 700;
  line-height: 1;
  color: var(--ice);
}

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

.page-about .about-network__card--orange .about-network__num {
  color: var(--orange);
}

.page-about .about-network__card p:last-child {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.66;
  color: var(--mist);
}

.page-about .about-network__foot {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 16px;
  align-items: start;
}

.page-about .about-network__note h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--ice);
}

.page-about .about-network__note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.66;
  color: var(--mist);
  max-width: 62ch;
}

.page-about .about-network__foot .btn {
  justify-self: start;
}

/* 结尾 */
.page-about .about-cta {
  display: grid;
  gap: 20px;
  padding: clamp(22px, 4vw, 40px);
  background:
    linear-gradient(120deg, rgba(47, 243, 224, 0.16), rgba(11, 31, 54, 0.92) 55%, rgba(139, 92, 246, 0.18)),
    var(--ink-900);
  border: 1px solid rgba(47, 243, 224, 0.32);
  clip-path: var(--about-cut);
  align-items: center;
}

.page-about .about-cta__text h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 4vw, 30px);
  line-height: 1.22;
  color: var(--ice);
}

.page-about .about-cta__text p {
  margin: 10px 0 0;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.66;
  max-width: 56ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 720px) {
  .page-about .about-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-strip__item {
    padding: 18px 16px;
  }

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

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

  .page-about .about-network__foot {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.7fr);
    gap: 48px;
  }

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

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    gap: 48px;
  }

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

  .page-about .about-team__intro > p,
  .page-about .about-team__intro .section-title,
  .page-about .about-team__intro .eyebrow {
    grid-column: 1;
  }

  .page-about .about-team__pic {
    margin-top: 18px;
  }

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

  .page-about .about-check__figure {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
    gap: 22px;
  }

  .page-about .about-check__figure figcaption {
    font-size: 13px;
  }

  .page-about .about-timeline {
    padding-left: 42px;
  }

  .page-about .about-timeline::before {
    left: 9px;
  }

  .page-about .about-timeline__item::before {
    left: -42px;
    top: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-dial__ring {
    animation: none;
  }

  .page-about .about-slash {
    transform: none;
  }
}
<<<END>>>