.page-about {
  --about-gap: clamp(52px, 7vw, 104px);
  --about-rule: 1px solid var(--line);
  --about-rule-cocoa: 1px solid rgba(35, 26, 22, 0.18);
  background: var(--ink);
  color: var(--cream);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about .shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  margin-bottom: clamp(22px, 4vw, 46px);
}

.page-about .breadcrumb__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: 11px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.page-about .breadcrumb__link {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 140ms ease, border-color 140ms ease;
}

.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-about .breadcrumb__item [aria-current="page"] {
  color: var(--cream);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(22px, 3vw, 36px) 0 var(--about-gap);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(200, 255, 61, 0.09) 0%, rgba(6, 27, 22, 0) 58%),
    linear-gradient(180deg, var(--ink-deep) 0%, var(--ink) 72%);
  border-bottom: var(--about-rule);
}

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

.page-about .about-hero__axis {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 16px;
}

.page-about .about-facts {
  flex: 1 1 100%;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-facts li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--slate);
}

.page-about .about-facts__num {
  min-width: 3.4em;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-about .about-hero__lead h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7vw, 74px);
  line-height: 0.98;
  letter-spacing: -0.015em;
  color: var(--cream);
  text-wrap: balance;
}

.page-about .about-hero__lead h1 em {
  display: inline-block;
  font-style: normal;
  color: var(--lime);
}

.page-about .about-hero__intro {
  max-width: 60ch;
  margin: 0 0 20px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: rgba(242, 233, 216, 0.84);
}

.page-about .about-hero__note {
  max-width: 46ch;
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  font-family: var(--font-note);
  font-size: 13px;
  line-height: 1.8;
  color: var(--amber);
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(180px, 250px) minmax(0, 1fr);
    align-items: start;
    gap: clamp(32px, 5vw, 72px);
  }

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

/* ---------- 起点 ---------- */
.page-about .about-origin {
  padding: var(--about-gap) 0;
  border-bottom: var(--about-rule);
}

.page-about .about-split {
  display: grid;
  gap: clamp(20px, 3vw, 28px);
}

.page-about .about-num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-about .about-split__label h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.2vw, 44px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .about-split__body p {
  max-width: 64ch;
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(242, 233, 216, 0.8);
}

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

.page-about .about-drop::first-letter {
  float: left;
  margin: 6px 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 3.6em;
  line-height: 0.78;
  color: var(--lime);
}

.page-about .about-lanes {
  display: grid;
  gap: 0;
  margin: clamp(34px, 5vw, 58px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-lane {
  padding: 20px 0 24px;
  border-top: 2px solid var(--line);
}

.page-about .about-lane__idx {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .about-lane h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2.2vw, 23px);
  line-height: 1.25;
  color: var(--cream);
}

.page-about .about-lane p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(242, 233, 216, 0.74);
}

@media (min-width: 900px) {
  .page-about .about-split {
    grid-template-columns: minmax(200px, 300px) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 76px);
  }

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

  .page-about .about-lane {
    padding: 22px 26px 8px 26px;
    border-left: 1px solid var(--line);
  }

  .page-about .about-lane:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-about .about-lane:last-child {
    padding-right: 0;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: var(--about-gap) 0;
  background: var(--cream);
  color: var(--cocoa);
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .about-team__head .tag {
  margin-bottom: 16px;
}

.page-about .about-team .section__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.4vw, 46px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  color: var(--cocoa);
}

.page-about .about-team .lede {
  max-width: 46ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(35, 26, 22, 0.72);
}

.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-team__figure img,
.page-about .about-track__figure img,
.page-about .about-eco__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  object-fit: cover;
}

.page-about .media__caption {
  margin-top: 10px;
  font-family: var(--font-note);
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(35, 26, 22, 0.6);
}

.page-about .about-roles {
  display: grid;
  gap: 0;
  margin-top: clamp(30px, 4vw, 52px);
}

.page-about .about-role {
  padding: 18px 0 22px;
  border-top: 1px solid rgba(35, 26, 22, 0.22);
}

.page-about .about-role__idx {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .about-role h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.3;
  color: var(--cocoa);
}

.page-about .about-role p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(35, 26, 22, 0.76);
}

.page-about .about-team__note {
  max-width: 62ch;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 14px 0 14px 16px;
  border-left: 2px solid var(--orange);
  background: rgba(217, 205, 184, 0.4);
  font-family: var(--font-note);
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(35, 26, 22, 0.8);
}

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(20px, 3vw, 40px);
  }
}

/* ---------- 样本 ---------- */
.page-about .about-sample {
  padding: var(--about-gap) 0;
  background:
    linear-gradient(180deg, var(--ink) 0%, var(--night) 100%);
}

.page-about .about-sample__inner {
  display: grid;
  gap: clamp(28px, 5vw, 60px);
  align-items: center;
}

.page-about .about-sample__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(64px, 13vw, 132px);
  line-height: 0.84;
  letter-spacing: -0.05em;
  color: var(--lime);
}

.page-about .about-sample__unit {
  display: block;
  margin-top: 12px;
  max-width: 24ch;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(242, 233, 216, 0.7);
}

.page-about .about-scale {
  display: flex;
  gap: 4px;
  margin-top: 22px;
}

.page-about .about-scale__seg {
  flex: 1 1 auto;
  height: 18px;
  border-radius: 3px;
  background: var(--line);
}

.page-about .about-scale__seg:nth-child(4n + 1) {
  background: var(--lime);
}

.page-about .about-scale__seg:nth-child(6n + 3) {
  background: var(--orange);
}

.page-about .about-scale__seg:nth-child(5n + 2) {
  background: var(--slate);
}

.page-about .about-scale__legend {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--slate);
}

.page-about .about-scale__legend li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.page-about .about-dot {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 5px;
  border-radius: 2px;
}

.page-about .about-dot--lime { background: var(--lime); }
.page-about .about-dot--orange { background: var(--orange); }
.page-about .about-dot--slate { background: var(--slate); }

.page-about .about-sample__body h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.06;
  color: var(--cream);
}

.page-about .about-sample__body > p {
  max-width: 56ch;
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(242, 233, 216, 0.78);
}

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

.page-about .about-ticks li {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-ticks strong {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lime);
  font-weight: 600;
}

.page-about .about-ticks span {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(242, 233, 216, 0.74);
}

@media (min-width: 900px) {
  .page-about .about-sample__inner {
    grid-template-columns: minmax(280px, 420px) minmax(0, 1fr);
  }

  .page-about .about-ticks li {
    grid-template-columns: minmax(120px, 160px) minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  padding: var(--about-gap) 0;
  background: var(--cream);
  color: var(--cocoa);
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
}

.page-about .about-timeline__head {
  max-width: 62ch;
}

.page-about .about-timeline__head .tag {
  margin-bottom: 16px;
}

.page-about .about-timeline .section__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.4vw, 46px);
  line-height: 1.04;
  color: var(--cocoa);
}

.page-about .about-timeline .lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(35, 26, 22, 0.72);
}

.page-about .about-track {
  display: grid;
  gap: clamp(28px, 4vw, 46px);
  margin-top: clamp(30px, 4vw, 52px);
}

.page-about .about-track__list {
  position: relative;
  margin: 0;
  padding: 0 0 0 28px;
  list-style: none;
  border-left: 2px solid rgba(35, 26, 22, 0.16);
}

.page-about .about-stage {
  position: relative;
  padding-bottom: clamp(26px, 3.4vw, 40px);
}

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

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px var(--cream), 0 0 0 5px rgba(35, 26, 22, 0.16);
}

.page-about .about-stage:first-child::before {
  background: var(--lime);
  box-shadow: 0 0 0 4px var(--cream), 0 0 0 5px rgba(200, 255, 61, 0.6);
}

.page-about .about-stage__era {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .about-stage h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.22;
  color: var(--cocoa);
}

.page-about .about-stage p {
  max-width: 58ch;
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(35, 26, 22, 0.76);
}

.page-about .about-track__figure {
  margin: 0;
}

.page-about .about-track__figure img {
  border: 1px solid rgba(35, 26, 22, 0.14);
}

.page-about .about-track__figure .media__caption {
  margin-top: 10px;
}

@media (min-width: 960px) {
  .page-about .about-track {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

  .page-about .about-track__figure {
    position: sticky;
    top: 96px;
  }
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  padding: var(--about-gap) 0;
  background: var(--ink);
  border-bottom: var(--about-rule);
}

.page-about .about-eco__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-about .about-eco__diagram svg {
  display: block;
  width: 100%;
  max-width: 560px;
  height: auto;
  overflow: visible;
}

.page-about .eco-lines line {
  stroke: var(--line);
  stroke-width: 1.4;
}

.page-about .eco-node circle {
  fill: var(--line);
  stroke: var(--ink);
  stroke-width: 2;
  transition: fill 150ms ease, r 150ms ease;
}

.page-about .eco-node text {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--slate);
  text-anchor: middle;
}

.page-about .eco-node--core circle {
  fill: var(--lime);
}

.page-about .eco-node--core text {
  fill: var(--ink-deep);
  font-size: 10.5px;
  font-weight: 700;
}

.page-about .eco-node--media circle { fill: var(--orange); }
.page-about .eco-node--data circle { fill: var(--lime); }
.page-about .eco-node--self circle { fill: var(--slate); }

.page-about .eco-node__label {
  opacity: 0;
  fill: var(--cream);
  transition: opacity 160ms ease;
}

.page-about .eco-node[tabindex="0"] {
  cursor: pointer;
  outline: none;
}

.page-about .eco-node:hover circle,
.page-about .eco-node:focus-visible circle {
  fill: var(--cream);
}

.page-about .eco-node:hover .eco-node__label,
.page-about .eco-node:focus-visible .eco-node__label {
  opacity: 1;
}

.page-about .about-eco__hint {
  max-width: 40ch;
  margin: 14px 0 0;
  font-family: var(--font-note);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-about .about-eco__body .tag {
  margin-bottom: 16px;
}

.page-about .about-eco__body h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.8vw, 42px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .about-eco__body p {
  max-width: 58ch;
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(242, 233, 216, 0.78);
}

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

.page-about .about-eco__figure {
  margin: clamp(30px, 4vw, 52px) 0 0;
}

.page-about .about-eco__figure img {
  border: 1px solid var(--line);
}

.page-about .about-eco__figure .media__caption {
  color: var(--slate);
}

@media (min-width: 900px) {
  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: clamp(34px, 5vw, 72px);
  }
}

/* ---------- 反馈 ---------- */
.page-about .about-feedback {
  padding: var(--about-gap) 0;
  background: var(--cream);
  color: var(--cocoa);
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
}

.page-about .about-feedback__grid {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.page-about .about-feedback__head .section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.2vw, 44px);
  line-height: 1.05;
  color: var(--cocoa);
}

.page-about .about-feedback__body p {
  max-width: 62ch;
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(35, 26, 22, 0.76);
}

.page-about .about-feedback__quote {
  margin: 0 0 18px;
  padding: clamp(22px, 3vw, 32px);
  background: var(--ink);
  color: var(--cream);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  filter: drop-shadow(6px 6px 0 rgba(35, 26, 22, 0.18));
}

.page-about .about-feedback__quote p {
  margin: 0;
  max-width: 34ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 25px);
  line-height: 1.4;
  color: var(--lime);
}

@media (min-width: 900px) {
  .page-about .about-feedback__grid {
    grid-template-columns: minmax(200px, 320px) minmax(0, 1fr);
    gap: clamp(30px, 5vw, 72px);
    align-items: start;
  }
}

/* ---------- 去向 ---------- */
.page-about .about-next {
  padding: clamp(44px, 6vw, 84px) 0 clamp(48px, 6vw, 88px);
  background: var(--night);
  border-top: 1px solid var(--line);
}

.page-about .about-next__inner h2 {
  margin: 0 0 clamp(20px, 3vw, 32px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.1;
  color: var(--cream);
}

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

.page-about .about-next__link {
  display: grid;
  gap: 4px;
  padding: 16px 34px 16px 0;
  border-top: 1px solid var(--line);
  color: var(--cream);
  text-decoration: none;
  position: relative;
  transition: background 150ms ease, padding-left 150ms ease;
}

.page-about .about-next__link::after {
  content: "→";
  position: absolute;
  right: 8px;
  top: 18px;
  font-family: var(--font-mono);
  color: var(--line);
  transition: color 150ms ease, transform 150ms ease;
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  background: rgba(200, 255, 61, 0.06);
  padding-left: 10px;
}

.page-about .about-next__link:hover::after,
.page-about .about-next__link:focus-visible::after {
  color: var(--lime);
  transform: translateX(3px);
}

.page-about .about-next__label {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.2;
}

.page-about .about-next__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
}

@media (min-width: 820px) {
  .page-about .about-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 56px);
  }
}
<<<PAGE_CSS_END>>>