.page-about {
  --about-pad: clamp(16px, 4vw, 40px);
  --about-num: clamp(42px, 11vw, 70px);
  position: relative;
  padding: 0 0 clamp(48px, 8vw, 84px);
  color: var(--text);
  font-family: var(--font-body);
  background:
    radial-gradient(90% 46% at 100% 0%, rgba(255, 90, 31, 0.15), transparent 62%),
    radial-gradient(70% 38% at 0% 100%, rgba(32, 227, 210, 0.06), transparent 72%),
    linear-gradient(180deg, var(--ink) 0%, #0b0f14 76%, var(--ink) 100%);
  overflow-x: clip;
}

.page-about .wrap {
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: var(--about-pad);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  margin: 18px 0 4px;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
}

.page-about .breadcrumbs li + li::before {
  content: "/";
  margin-right: 4px;
  color: var(--line);
}

.page-about .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--flame-soft);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(20px, 4vw, 34px);
  padding: clamp(18px, 3vw, 30px) 0 clamp(28px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
}

.page-about .kicker {
  display: inline-block;
  margin: 0;
  padding-left: 10px;
  border-left: 2px solid var(--flame);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--flame-soft);
}

.page-about .about-hero__title {
  margin: 14px 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(29px, 6.2vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--text);
  transform: skewX(-1deg);
  transform-origin: left center;
}

.page-about .about-hero__lede {
  max-width: 58ch;
  margin: 0 0 clamp(20px, 3vw, 28px);
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-toc {
  padding-top: 16px;
  border-top: 1px solid rgba(51, 65, 79, 0.75);
}

.page-about .about-toc__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
}

.page-about .about-toc__list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-toc__list a {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 9px 6px 9px 0;
  border-bottom: 1px dashed rgba(51, 65, 79, 0.65);
  color: var(--text);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
}

.page-about .about-toc__list a:hover,
.page-about .about-toc__list a:focus-visible {
  padding-left: 8px;
  color: var(--flame-soft);
}

.page-about .about-toc__num {
  flex: none;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--live);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  left: 0;
  right: 30%;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--flame), var(--flame-soft));
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
  clip-path: polygon(0 0, 100% 0, 100% 93%, 0 100%);
}

.page-about .about-hero__media figcaption {
  padding: 10px 14px 14px;
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--muted);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-ch {
  padding-top: clamp(26px, 4vw, 40px);
  padding-bottom: clamp(10px, 2vw, 16px);
  border-top: 1px solid rgba(51, 65, 79, 0.55);
}

.page-about .about-ch:first-of-type {
  border-top: 0;
}

.page-about .about-ch__rail {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 10px;
}

.page-about .about-ch__num {
  flex: none;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 700;
  font-size: var(--about-num);
  line-height: 0.78;
  letter-spacing: -0.04em;
  color: var(--flame);
}

.page-about .about-ch__tag {
  font-size: 10.5px;
  letter-spacing: 0.24em;
  color: var(--muted);
}

.page-about .about-ch__title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(23px, 4.2vw, 34px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .about-ch__title::before {
  content: "";
  display: block;
  width: 36px;
  height: 3px;
  margin-bottom: 14px;
  background: var(--flame);
}

.page-about .about-ch__body p {
  max-width: 66ch;
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 数据条 ---------- */
.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 1px;
  margin-top: 22px;
  border: 1px solid rgba(51, 65, 79, 0.6);
  background: rgba(51, 65, 79, 0.6);
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 14px 12px 16px;
  background: var(--panel);
}

.page-about .about-fact__n {
  font-family: var(--font-data);
  font-size: clamp(18px, 3.4vw, 24px);
  letter-spacing: -0.02em;
  color: var(--flame-soft);
}

.page-about .about-fact__l {
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 边注 ---------- */
.page-about .about-note {
  max-width: 60ch;
  margin: 22px 0 0;
  padding: 13px 16px;
  border-left: 3px solid var(--flame);
  background: linear-gradient(90deg, rgba(255, 90, 31, 0.13), rgba(18, 23, 29, 0.65) 62%);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text);
}

.page-about .about-note b {
  font-family: var(--font-data);
  font-weight: 500;
  color: var(--flame-soft);
}

/* ---------- 内容体系分层 ---------- */
.page-about .about-layers {
  display: grid;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-layer {
  --ly: var(--flame);
  padding: 16px 16px 16px 20px;
  border-left: 3px solid var(--ly);
  background: var(--panel);
  box-shadow: 0 14px 26px -22px rgba(0, 0, 0, 0.95);
}

.page-about .about-layer:nth-child(2) {
  --ly: var(--live);
}

.page-about .about-layer:nth-child(3) {
  --ly: var(--paper);
}

.page-about .about-layer:nth-child(4) {
  --ly: var(--flame-soft);
}

.page-about .about-layer__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.page-about .about-layer__k {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--ly);
}

.page-about .about-tag {
  display: inline-block;
  padding: 2px 7px;
  border: 1px solid currentColor;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--ly);
}

.page-about .about-layer p {
  max-width: 62ch;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .about-layer .about-layer__meta {
  margin-top: 9px;
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--flame-soft);
}

/* ---------- 流程 ---------- */
.page-about .about-flow {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow__item {
  position: relative;
  padding: 0 0 22px 36px;
  border-left: 1px dashed rgba(51, 65, 79, 0.9);
}

.page-about .about-flow__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-flow__step {
  position: absolute;
  left: -13px;
  top: 0;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  background: var(--data);
  border: 1px solid var(--flame);
  font-family: var(--font-data);
  font-size: 10.5px;
  color: var(--flame-soft);
  clip-path: polygon(0 0, 100% 0, 100% 76%, 76% 100%, 0 100%);
}

.page-about .about-flow__item h3 {
  margin: 2px 0 6px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text);
}

.page-about .about-flow__item p {
  max-width: 58ch;
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 图片框 ---------- */
.page-about .about-figure {
  margin: 24px 0 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

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

.page-about .about-figure figcaption {
  padding: 10px 14px 12px;
  border-top: 1px solid rgba(51, 65, 79, 0.7);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 团队 ---------- */
.page-about .about-crew {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 20px 0 24px;
  padding: 0;
  list-style: none;
}

.page-about .about-crew li {
  padding: 12px 12px 14px;
  border-top: 2px solid var(--flame);
  background: var(--data);
}

.page-about .about-crew__n {
  display: block;
  font-family: var(--font-data);
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-about .about-crew__r {
  display: block;
  margin-top: 4px;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-about .about-track {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-track li {
  position: relative;
  padding: 0 0 20px 30px;
  border-left: 1px solid rgba(51, 65, 79, 0.85);
}

.page-about .about-track li:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-track li::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 5px;
  width: 9px;
  height: 9px;
  background: var(--ink);
  border: 1px solid var(--flame);
  transform: rotate(45deg);
}

.page-about .about-track li:last-child::before {
  background: var(--flame);
  border-color: var(--flame);
}

.page-about .about-track h3 {
  margin: 0 0 5px;
  font-family: var(--font-head);
  font-size: 15.5px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--flame-soft);
}

.page-about .about-track p {
  max-width: 56ch;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  display: grid;
  gap: 1px;
  margin-top: 20px;
  border: 1px solid rgba(51, 65, 79, 0.6);
  background: rgba(51, 65, 79, 0.6);
}

.page-about .about-eco__item {
  padding: 20px 18px 22px;
  background: var(--panel);
}

.page-about .about-eco__n {
  display: block;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 700;
  font-size: 44px;
  line-height: 1;
  color: var(--flame);
}

.page-about .about-eco__item h3 {
  margin: 10px 0 8px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--text);
}

.page-about .about-eco__item p {
  max-width: 46ch;
  margin: 0;
  font-size: 13.8px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .about-eco__note {
  margin: 16px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--fix);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-service {
  margin-top: 22px;
  padding: 16px 18px 18px;
  border: 1px solid rgba(32, 227, 210, 0.28);
  background: linear-gradient(120deg, rgba(32, 227, 210, 0.09), rgba(18, 23, 29, 0.9) 58%);
}

.page-about .about-service__k {
  margin: 0 0 8px;
  font-size: 10.5px;
  letter-spacing: 0.24em;
  color: var(--live);
}

.page-about .about-service .about-service__p {
  margin: 0;
  max-width: 62ch;
  font-size: 13.8px;
  line-height: 1.75;
  color: var(--text);
}

.page-about .about-service .mono {
  font-family: var(--font-data);
  color: var(--text);
  word-break: break-all;
}

/* ---------- 收益与行动 ---------- */
.page-about .about-gains {
  display: grid;
  gap: 18px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-gains__item {
  padding-left: 16px;
  border-left: 1px solid rgba(51, 65, 79, 0.85);
}

.page-about .about-gains__item h3 {
  margin: 0 0 7px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: var(--flame-soft);
}

.page-about .about-gains__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .about-cta {
  display: grid;
  gap: 16px;
  margin-top: 26px;
  padding: 20px 18px;
  border: 1px solid rgba(255, 90, 31, 0.35);
  background: linear-gradient(120deg, rgba(255, 90, 31, 0.17), rgba(18, 23, 29, 0.92) 58%);
}

.page-about .about-cta__text {
  max-width: 54ch;
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text);
}

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

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 16px 0 0;
}

.page-about .about-cta__links a {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 90, 31, 0.55);
  padding-bottom: 2px;
}

.page-about .about-cta__links a:hover,
.page-about .about-cta__links a:focus-visible {
  color: var(--flame-soft);
}

/* ---------- 入场 ---------- */
.has-js .page-about [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.has-js .page-about [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-toc__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 20px;
  }

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

@media (min-width: 780px) {
  .page-about .about-eco {
    grid-template-columns: 1.15fr 1fr 0.85fr;
  }

  .page-about .about-gains {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 34px;
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
    padding: 24px 22px;
  }
}

@media (min-width: 900px) {
  .page-about .about-ch {
    display: grid;
    grid-template-columns: 126px minmax(0, 1fr);
    column-gap: 44px;
    padding-top: clamp(40px, 5vw, 62px);
    padding-bottom: clamp(24px, 3vw, 34px);
  }

  .page-about .about-ch__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 0;
  }

  .page-about .about-ch__num {
    font-size: 76px;
  }

  .page-about .about-ch__tag {
    writing-mode: vertical-rl;
    letter-spacing: 0.34em;
    padding-top: 4px;
  }
}

@media (min-width: 940px) {
  .page-about .about-process-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
    gap: 34px;
    align-items: start;
  }

  .page-about .about-process-grid .about-figure {
    margin-top: 20px;
  }

  .page-about .about-team-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    gap: 34px;
    align-items: start;
  }

  .page-about .about-team-grid .about-figure {
    margin-top: 0;
  }
}

@media (min-width: 980px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.62fr);
    align-items: start;
  }

  .page-about .about-hero__media {
    margin-top: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .has-js .page-about [data-reveal],
  .has-js .page-about [data-reveal].is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .about-toc__list a {
    transition: none;
  }
}
<<<END>>>