.page-about {
  --about-soft: rgba(182, 255, 230, 0.74);
  --about-cream-line: rgba(36, 21, 15, 0.16);
  background: var(--ink);
  color: var(--about-soft);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(96px, 13vw, 148px) 0 clamp(48px, 7vw, 88px);
  background: var(--ink);
}

.page-about .about-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .about-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
}

.page-about .about-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(90% 80% at 12% 8%, rgba(69, 255, 194, 0.18), transparent 62%),
    linear-gradient(180deg, rgba(6, 26, 20, 0.55), var(--ink) 88%);
}

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

.page-about .about-hero .crumbs {
  margin-bottom: clamp(30px, 5vw, 54px);
}

.page-about .about-hero .crumbs ol,
.page-about .about-hero .crumbs a {
  color: var(--about-soft);
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: end;
}

.page-about .about-hero-copy .eyebrow {
  color: var(--pulse);
  margin-bottom: 14px;
}

.page-about .about-hero-copy h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(34px, 6.2vw, 74px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 0 0 20px;
  max-width: 15em;
}

.page-about .about-hero-copy .lede {
  color: var(--about-soft);
  font-size: clamp(16px, 1.9vw, 18px);
  line-height: 1.75;
  max-width: 34em;
  margin: 0 0 28px;
}

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

.page-about .about-hero-panel {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(69, 255, 194, 0.16), rgba(6, 26, 20, 0.62));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: clamp(18px, 3vw, 26px);
  box-shadow: 0 26px 64px rgba(0, 0, 0, 0.4);
}

.page-about .about-panel-cap {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--data-gray);
  margin: 0 0 12px;
}

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

.page-about .about-panel-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-panel-list li:last-child {
  border-bottom: 0;
}

.page-about .about-panel-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 3.6vw, 34px);
  font-weight: 700;
  color: var(--pulse);
  line-height: 1;
}

.page-about .about-panel-key {
  font-size: 14px;
  color: var(--about-soft);
}

.page-about .about-panel-foot {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--score);
  letter-spacing: 0.02em;
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  background: var(--cream);
  color: var(--brown);
}

.page-about .about-origin-grid {
  display: grid;
  gap: clamp(20px, 4vw, 48px);
}

.page-about .about-origin-label .eyebrow {
  color: #a8501f;
  margin-bottom: 10px;
}

.page-about .about-year-mark {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(50px, 9vw, 92px);
  line-height: 0.82;
  letter-spacing: -0.04em;
  color: rgba(36, 21, 15, 0.14);
  margin: 0;
}

.page-about .about-origin .section-title {
  color: var(--brown);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin: 0 0 22px;
  max-width: 18em;
}

.page-about .about-origin .prose {
  max-width: 40em;
  color: #3d2619;
  font-size: 16.5px;
  line-height: 1.78;
}

.page-about .about-origin .prose p {
  margin: 0 0 16px;
}

.page-about .about-pull {
  margin: 26px 0 0;
  padding-left: 18px;
  border-left: 3px solid var(--score);
  font-family: var(--font-head);
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 700;
  line-height: 1.55;
  color: #2f1c12;
  max-width: 30em;
}

/* ---------- 版本时间线 ---------- */
.page-about .about-head {
  margin-bottom: clamp(26px, 4vw, 40px);
}

.page-about .about-head .eyebrow {
  color: var(--score);
  margin-bottom: 12px;
}

.page-about .about-head .section-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 0 0 12px;
}

.page-about .about-head-note {
  color: var(--data-gray);
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
  max-width: 40em;
}

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

.page-about .about-track::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--pulse), rgba(69, 255, 194, 0.1));
}

.page-about .about-node {
  position: relative;
  padding-left: 32px;
  margin-bottom: 12px;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--pulse);
  box-shadow: 0 0 0 4px rgba(69, 255, 194, 0.14);
}

.page-about .about-step {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(69, 255, 194, 0.05);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.page-about .about-step:hover,
.page-about .about-step[open] {
  border-color: var(--line-strong);
  background: rgba(69, 255, 194, 0.1);
}

.page-about .about-step > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 62px 1fr auto;
  gap: 12px;
  align-items: baseline;
  padding: 15px 16px;
}

.page-about .about-step > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-step > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--pulse);
}

.page-about .about-step[open] > summary::after {
  content: "–";
  color: var(--score);
}

.page-about .about-node-year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  font-weight: 700;
  color: var(--pulse);
  letter-spacing: 0.02em;
}

.page-about .about-node-title {
  font-family: var(--font-head);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .about-node-body {
  padding: 0 16px 16px 78px;
}

.page-about .about-node-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-soft);
}

/* ---------- 数据流程 ---------- */
.page-about .about-flow {
  background: var(--field);
}

.page-about .about-flow-grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
}

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

.page-about .about-tree::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: linear-gradient(180deg, var(--pulse), var(--score));
  opacity: 0.45;
}

.page-about .about-tree > li {
  position: relative;
  margin-bottom: 10px;
}

.page-about .about-branch {
  border: 1px solid transparent;
  border-radius: 12px;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.page-about .about-branch[open] {
  border-color: rgba(69, 255, 194, 0.42);
  background: rgba(69, 255, 194, 0.08);
}

.page-about .about-branch > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
  padding: 10px 12px;
}

.page-about .about-branch > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-branch-idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--pulse);
}

.page-about .about-branch[open] .about-branch-idx {
  background: var(--pulse);
  color: var(--ink);
  border-color: var(--pulse);
}

.page-about .about-branch-name {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-branch-body {
  padding: 2px 14px 14px 56px;
}

.page-about .about-branch-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-soft);
}

.page-about .about-flow-media {
  margin: 0;
}

.page-about .about-flow-media .media-frame {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink);
}

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

.page-about .about-flow-media .media-caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--data-gray);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--paper);
  color: var(--brown);
}

.page-about .about-team .eyebrow {
  color: #a8501f;
  margin-bottom: 12px;
}

.page-about .about-team .section-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--brown);
  margin: 0;
}

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

.page-about .about-team-row {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 18px;
  row-gap: 4px;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--about-cream-line);
}

.page-about .about-team-num {
  grid-row: 1 / 3;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 5vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: #1c6a51;
}

.page-about .about-team-name {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--brown);
}

.page-about .about-team-desc {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: #4a3225;
}

.page-about .about-team-note {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 2px solid rgba(36, 21, 15, 0.5);
}

.page-about .about-team-note p {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.75;
  color: #3d2619;
  max-width: 44em;
}

.page-about .about-office {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #6a4a36;
  letter-spacing: 0.01em;
}

/* ---------- 栏目入口 ---------- */
.page-about .about-entry-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-about .about-entry-media {
  margin: 0;
}

.page-about .about-entry-media .media-frame {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-about .about-entry-media .media-caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--data-gray);
}

.page-about .about-entry-body .eyebrow {
  color: var(--pulse);
  margin-bottom: 12px;
}

.page-about .about-entry-body .section-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 0 0 18px;
}

.page-about .about-entry-body .prose {
  color: var(--about-soft);
  font-size: 16px;
  line-height: 1.78;
  max-width: 38em;
}

.page-about .about-entry-body .prose p {
  margin: 0 0 14px;
}

.page-about .about-entry-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  background: var(--field);
}

.page-about .about-partners-head {
  display: grid;
  gap: 20px;
  margin-bottom: clamp(22px, 4vw, 34px);
}

.page-about .about-partners-head .eyebrow {
  color: var(--score);
  margin-bottom: 12px;
}

.page-about .about-partners-head .section-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 0 0 12px;
}

.page-about .about-band {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 2px 2px 16px;
  margin-bottom: 6px;
  scrollbar-width: thin;
}

.page-about .about-band span {
  flex: 0 0 auto;
  font-size: 13px;
  letter-spacing: 0.02em;
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--pulse-soft);
  background: rgba(255, 249, 236, 0.04);
  white-space: nowrap;
}

.page-about .about-partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-partner {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(69, 255, 194, 0.05);
  padding: 18px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-about .about-partner:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.page-about .about-partner-type {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--score);
}

.page-about .about-partner-title {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-about .about-partner-desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--about-soft);
}

.page-about .about-partner-grid [data-filter-item][hidden] {
  display: none;
}

.page-about .filter-status {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--data-gray);
}

.page-about .about-honor {
  display: grid;
  gap: 12px;
  margin-top: 26px;
  padding-top: 24px;
  border-top: 1px solid var(--line-strong);
}

.page-about .about-honor-item {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-about .about-honor-year {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--score);
}

.page-about .about-honor-name {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

/* ---------- 承诺 ---------- */
.page-about .about-future {
  position: relative;
  overflow: hidden;
  background: linear-gradient(150deg, var(--field) 0%, var(--ink) 58%, #030f0b 100%);
}

.page-about .about-future::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -10%;
  width: 52vw;
  height: 52vw;
  max-width: 640px;
  max-height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(69, 255, 194, 0.16), transparent 68%);
  pointer-events: none;
}

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

.page-about .about-future .eyebrow {
  color: var(--pulse);
  margin-bottom: 16px;
}

.page-about .about-future-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 60px);
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--paper);
  margin: 0 0 clamp(26px, 4vw, 42px);
  max-width: 14em;
}

.page-about .about-future-grid {
  display: grid;
  gap: 22px;
  margin-bottom: clamp(26px, 4vw, 40px);
}

.page-about .about-future-item {
  border-left: 2px solid var(--line-strong);
  padding-left: 18px;
}

.page-about .about-future-item h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--pulse-soft);
  margin: 0 0 8px;
}

.page-about .about-future-item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--about-soft);
  max-width: 34em;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(276px, 0.72fr);
  }

  .page-about .about-origin-grid {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-step > summary {
    grid-template-columns: 88px 1fr auto;
    padding: 17px 20px;
  }

  .page-about .about-node-body {
    padding-left: 108px;
  }

  .page-about .about-flow-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.82fr);
  }

  .page-about .about-entry-grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1fr);
  }

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

@media (min-width: 1060px) {
  .page-about .about-partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-partner,
  .page-about .about-step,
  .page-about .about-branch {
    transition: none;
  }

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