.page-about {
  --about-panel-bg: linear-gradient(180deg, rgba(16, 42, 71, .9), rgba(11, 29, 51, .76));
  color: var(--text);
  overflow-wrap: break-word;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(20px, 4vw, 44px) 0 clamp(38px, 6vw, 72px);
  overflow: hidden;
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

.page-about .about-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-about .about-hero__eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.page-about .about-hero h1 {
  margin: 0 0 18px;
  font-family: var(--ff-serif);
  font-weight: 700;
  font-size: clamp(28px, 5.2vw, 56px);
  line-height: 1.2;
  letter-spacing: .01em;
  color: var(--text);
}

.page-about .about-hero__lead {
  max-width: 34em;
  margin: 0 0 26px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--muted);
}

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

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .btn--primary {
  background: var(--orange);
  color: #1a0d04;
}

.page-about .btn--primary:hover,
.page-about .btn--primary:focus-visible {
  background: #ffa267;
}

.page-about .btn--ghost {
  border-color: var(--line);
  background: rgba(16, 42, 71, .5);
  color: var(--text);
}

.page-about .btn--ghost:hover,
.page-about .btn--ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-about .about-hero__board {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(18px, 2.6vw, 26px);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(53, 242, 214, .16), transparent 62%),
    radial-gradient(90% 80% at 0% 100%, rgba(255, 138, 61, .12), transparent 64%),
    linear-gradient(180deg, rgba(16, 42, 71, .95), rgba(11, 29, 51, .9));
  box-shadow: 0 26px 56px -40px rgba(0, 0, 0, .95), inset 0 1px 0 rgba(234, 246, 255, .05);
}

.page-about .about-hero__board-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-about .about-hero__board-head::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 242, 214, .16);
}

.page-about .about-hero__figures {
  display: grid;
  gap: 14px;
  margin: 0;
}

.page-about .about-hero__figures > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-hero__figures > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-hero__figures dt {
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

.page-about .about-hero__figures dd {
  margin: 0;
  font-family: var(--ff-mono);
  font-size: 26px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}

.page-about .about-hero__figures dd span {
  margin-left: 4px;
  font-family: var(--ff-sans);
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
}

.page-about .about-hero__board-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-soft);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 目录 + 面板 ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding-bottom: clamp(56px, 8vw, 96px);
}

.page-about .about-toc {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  background: rgba(11, 29, 51, .62);
}

.page-about .about-toc__title {
  margin: 0 0 12px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
}

.page-about .about-toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-toc__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 8px;
  border-left: 2px solid transparent;
  font-size: 13.5px;
  color: var(--muted);
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--text);
  background: rgba(53, 242, 214, .08);
  border-left-color: var(--cyan);
}

.page-about .about-toc__no {
  font-family: var(--ff-mono);
  font-size: 10.5px;
  color: var(--cyan);
  opacity: .85;
}

.page-about .about-panel {
  position: relative;
  margin-bottom: 18px;
  padding: clamp(20px, 3.2vw, 38px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--about-panel-bg);
  box-shadow: inset 0 1px 0 rgba(234, 246, 255, .04), 0 30px 64px -54px rgba(0, 0, 0, .95);
}

.page-about .about-panel::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 24px;
  bottom: 24px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(53, 242, 214, 0) 85%);
  opacity: .75;
}

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

.page-about .about-panel__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.page-about .about-panel__no {
  padding: 2px 9px;
  border: 1px solid rgba(53, 242, 214, .35);
  border-radius: 999px;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-about .about-panel__title {
  margin: 0;
  font-family: var(--ff-serif);
  font-size: clamp(21px, 2.8vw, 30px);
  line-height: 1.36;
  color: var(--text);
}

.page-about .about-panel__lead {
  max-width: 60em;
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-panel__note {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-soft);
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-panel__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 214, .35);
}

.page-about .about-panel__note a:hover,
.page-about .about-panel__note a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-about .about-prose p {
  max-width: 40em;
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

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

.page-about .about-figure,
.page-about .about-figure-wide {
  margin: 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
}

.page-about .about-figure-wide {
  margin: 0 0 24px;
}

.page-about .about-figure-wide img {
  display: block;
  width: 100%;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.page-about .about-cap {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 时间线 ---------- */
.page-about .about-track {
  position: relative;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-track::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(53, 242, 214, .75), rgba(53, 242, 214, .06));
}

.page-about .about-track__item {
  position: relative;
  padding: 0 0 22px 32px;
}

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

.page-about .about-track__node {
  position: absolute;
  left: 0;
  top: 5px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--void);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 242, 214, .1);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-track__stage {
  margin: 0 0 6px;
  font-family: var(--ff-cond);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.4;
  color: var(--text);
  transition: color var(--dur) var(--ease);
}

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

/* ---------- 团队筛选 ---------- */
.page-about .team-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-about .team-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-about .team-tabs label {
  display: inline-block;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(16, 42, 71, .6);
  font-size: 13.5px;
  color: var(--muted);
  cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .team-tabs label:hover {
  color: var(--text);
  border-color: rgba(53, 242, 214, .5);
}

.page-about #tf-all:checked ~ .team-tabs label[for="tf-all"],
.page-about #tf-data:checked ~ .team-tabs label[for="tf-data"],
.page-about #tf-rule:checked ~ .team-tabs label[for="tf-rule"],
.page-about #tf-edit:checked ~ .team-tabs label[for="tf-edit"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04231f;
  font-weight: 600;
}

.page-about #tf-all:focus-visible ~ .team-tabs label[for="tf-all"],
.page-about #tf-data:focus-visible ~ .team-tabs label[for="tf-data"],
.page-about #tf-rule:focus-visible ~ .team-tabs label[for="tf-rule"],
.page-about #tf-edit:focus-visible ~ .team-tabs label[for="tf-edit"] {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about #tf-data:checked ~ .team-grid .team-card:not(.team-card--data),
.page-about #tf-rule:checked ~ .team-grid .team-card:not(.team-card--rule),
.page-about #tf-edit:checked ~ .team-grid .team-card:not(.team-card--edit) {
  display: none;
}

.page-about .team-card {
  padding: 16px 16px 18px;
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(16, 42, 71, .55);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .team-card:hover {
  border-color: rgba(53, 242, 214, .4);
  border-top-color: var(--cyan);
  background: rgba(16, 42, 71, .82);
}

.page-about .team-card--data {
  border-top-color: rgba(53, 242, 214, .75);
}

.page-about .team-card--rule {
  border-top-color: rgba(255, 209, 102, .75);
}

.page-about .team-card--edit {
  border-top-color: rgba(255, 138, 61, .75);
}

.page-about .team-card__role {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 8px;
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  background: rgba(6, 16, 31, .6);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-about .team-card--data .team-card__role {
  color: var(--cyan);
}

.page-about .team-card--rule .team-card__role {
  color: var(--yellow);
}

.page-about .team-card--edit .team-card__role {
  color: var(--orange);
}

.page-about .team-card__title {
  margin: 0 0 8px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text);
}

.page-about .team-card__cnt {
  display: inline-block;
  margin-left: 6px;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  font-weight: 400;
  color: var(--muted);
}

.page-about .team-card__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 流程 ---------- */
.page-about .flow-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .flow-step {
  padding: 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(16, 42, 71, .58), rgba(11, 29, 51, .32));
  box-shadow: 0 14px 30px -26px rgba(0, 0, 0, .95);
}

.page-about .flow-step__no {
  display: block;
  margin-bottom: 6px;
  font-family: var(--ff-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--cyan);
  opacity: .85;
}

.page-about .flow-step__title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.page-about .flow-step__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 协作 ---------- */
.page-about .partner-list {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .partner-list li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .partner-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .9em;
  width: 10px;
  height: 1px;
  background: var(--orange);
}

/* ---------- 服务与联系 ---------- */
.page-about .service-list {
  display: grid;
  gap: 10px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-about .service-list li {
  padding: 12px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(16, 42, 71, .5);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .service-list strong {
  display: block;
  margin-bottom: 2px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

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

.page-about .contact-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(255, 138, 61, .14), transparent 62%),
    linear-gradient(180deg, rgba(16, 42, 71, .92), rgba(11, 29, 51, .82));
}

.page-about .contact-card dl {
  display: grid;
  gap: 14px;
  margin: 0;
}

.page-about .contact-card dt {
  margin-bottom: 4px;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-about .contact-card dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .flow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .about-track {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-track::before {
    left: 0;
    right: 0;
    top: 6px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, rgba(53, 242, 214, .75), rgba(53, 242, 214, .06));
  }

  .page-about .about-track__item {
    padding: 28px 0 0;
  }

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

  .page-about .about-track__node {
    top: 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: end;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 30px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-about .about-body {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-toc {
    position: sticky;
    top: 132px;
    padding: 18px;
  }

  .page-about .about-toc__list {
    display: grid;
    gap: 2px;
  }
}

@media (min-width: 1060px) {
  .page-about .flow-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (hover: hover) and (pointer: fine) {
  .page-about .about-track__item:hover .about-track__node {
    background: var(--cyan);
    box-shadow: 0 0 0 6px rgba(53, 242, 214, .18);
  }

  .page-about .about-track__item:hover .about-track__stage {
    color: var(--cyan);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}
<<<END>>>