.page-about {
  --rail-w: 208px;
  background:
    radial-gradient(1100px 520px at 88% -8%, rgba(36, 224, 176, 0.09), transparent 62%),
    radial-gradient(760px 440px at -8% 14%, rgba(227, 178, 90, 0.09), transparent 60%),
    linear-gradient(180deg, var(--deep) 0%, var(--deep) 60%, #0A1C30 100%);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: calc(var(--header-h) + 48px) 0 56px;
  border-bottom: 1px solid var(--line-soft);
}
@media (min-width: 760px) {
  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 76px);
    padding-bottom: 76px;
  }
}
.page-about .breadcrumb { margin-bottom: 26px; }

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}
@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 56px;
    align-items: end;
  }
}

.page-about .about-hero .eyebrow { margin: 0 0 14px; }

.page-about .about-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-size: clamp(28px, 5.4vw, 52px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.page-about .about-hero .lede {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(245, 247, 250, 0.76);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__panel {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--glass);
  padding: 22px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.page-about .about-panel__title {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gray);
}
.page-about .about-facts { margin: 16px 0 0; }
.page-about .about-fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
}
.page-about .about-fact:first-child { padding-top: 0; }
.page-about .about-fact:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-about .about-fact dt {
  font-size: 13px;
  color: var(--gray);
}
.page-about .about-fact dd {
  margin: 0;
  font-family: var(--font-num);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--sand);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-body { padding: 8px 0 24px; }

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}
@media (min-width: 900px) {
  .page-about .about-layout {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: 52px;
  }
}

.page-about .about-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.page-about .about-rail::-webkit-scrollbar { display: none; }

.page-about .rail-title { display: none; }

@media (min-width: 900px) {
  .page-about .about-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 20px);
    align-self: start;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-about .rail-title {
    display: block;
    margin: 0 0 14px;
    font-size: 11px;
    letter-spacing: 0.16em;
    color: var(--gray);
  }
}

.page-about .rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 900px) {
  .page-about .rail-list {
    display: grid;
    gap: 0;
  }
}

.page-about .rail-link {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 8px 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  color: rgba(245, 247, 250, 0.7);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}
@media (min-width: 900px) {
  .page-about .rail-link {
    padding: 9px 0 9px 13px;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    white-space: normal;
  }
}
.page-about .rail-link:hover,
.page-about .rail-link:focus-visible {
  color: var(--paper);
  border-color: var(--orange);
  background-color: rgba(255, 106, 26, 0.09);
}
.page-about .rail-idx {
  flex: none;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--sand);
}

.page-about .about-main { min-width: 0; }

/* ---------- 章节通用 ---------- */
.page-about .about-sec {
  padding: 44px 0;
  border-bottom: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.page-about .about-sec:first-child { padding-top: 8px; }
.page-about .about-sec:last-child {
  padding-bottom: 8px;
  border-bottom: 0;
}
@media (min-width: 900px) {
  .page-about .about-sec { padding: 56px 0; }
  .page-about .about-sec:first-child { padding-top: 12px; }
}

.page-about .sec-kicker {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--sand);
}
.page-about .sec-head h2 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: clamp(23px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.page-about .sec-sub {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(245, 247, 250, 0.72);
}

.page-about .media-frame {
  margin: 0;
  border-radius: var(--r-md);
}
.page-about .media-frame img { max-width: 100%; }

.page-about .sec-out {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-soft);
}
.page-about .sec-out__link {
  font-size: 14px;
  color: var(--orange-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 143, 67, 0.35);
  padding-bottom: 2px;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}
.page-about .sec-out__link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}
.page-about .sec-out__link:focus-visible {
  outline: none;
  box-shadow: var(--focus);
  border-radius: var(--r-sm);
}

/* ---------- 01 团队 ---------- */
.page-about .about-team__media { margin: 26px 0 32px; }

.page-about .role-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 680px) {
  .page-about .role-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

.page-about .role-card {
  padding: 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--glass);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}
@media (hover: hover) {
  .page-about .role-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 106, 26, 0.42);
    background-color: var(--glass-strong);
  }
}

.page-about .role-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}
.page-about .role-ring {
  position: relative;
  flex: none;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: conic-gradient(from -90deg, var(--orange) var(--p, 0%), rgba(245, 247, 250, 0.09) 0);
}
.page-about .role-ring::before {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background: var(--deep);
}
.page-about .role-ring__val {
  position: relative;
  font-family: var(--font-num);
  font-size: 17px;
  font-weight: 700;
  line-height: 1;
  color: var(--paper);
}
.page-about .role-card__name {
  margin: 0;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.page-about .role-card__desc {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(245, 247, 250, 0.74);
}
.page-about .role-card__day {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.65;
  color: var(--gray);
}

/* ---------- 02 流程 ---------- */
.page-about .flow-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}
@media (min-width: 860px) {
  .page-about .flow-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    margin-bottom: 34px;
  }
  .page-about .flow-step {
    padding: 0 26px;
    border-left: 1px solid var(--line-soft);
  }
  .page-about .flow-step:first-child {
    padding-left: 0;
    border-left: 0;
  }
  .page-about .flow-step:last-child { padding-right: 0; }
}

.page-about .flow-idx {
  display: inline-block;
  margin-bottom: 14px;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  background: var(--sand);
  color: var(--deep);
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.12em;
}
.page-about .flow-title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}
.page-about .flow-desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.72);
}

.page-about .flow-visual {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-bottom: 26px;
  padding: 24px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, rgba(18, 58, 92, 0.6), rgba(11, 34, 57, 0.35));
}
@media (min-width: 760px) {
  .page-about .flow-visual {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }
}
@media (min-width: 1060px) {
  .page-about .flow-visual { grid-template-columns: 360px minmax(0, 1fr); }
}
.page-about .flow-visual__text h3 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}
.page-about .flow-visual__text p {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(245, 247, 250, 0.74);
}
.page-about .flow-visual__text p:last-child { margin-bottom: 0; }

/* ---------- 03 沿革 ---------- */
.page-about .hist-media { margin: 0 0 30px; }

.page-about .hist-list {
  position: relative;
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0 0 0 28px;
  list-style: none;
}
.page-about .hist-list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, rgba(227, 178, 90, 0.72), rgba(227, 178, 90, 0.08));
}
.page-about .hist-item { position: relative; }
.page-about .hist-item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 21px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 2px solid var(--sand);
  background: var(--deep);
}

.page-about .hist-node {
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--glass);
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease);
}
.page-about .hist-node[open] {
  border-color: rgba(227, 178, 90, 0.42);
  background-color: var(--glass-strong);
}
.page-about .hist-summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  list-style: none;
  cursor: pointer;
  user-select: none;
}
.page-about .hist-summary::-webkit-details-marker { display: none; }
.page-about .hist-summary:focus-visible {
  outline: none;
  box-shadow: var(--focus);
  border-radius: var(--r-md);
}
.page-about .hist-summary::after {
  content: "＋";
  margin-left: auto;
  font-size: 14px;
  line-height: 1;
  color: var(--sand);
}
.page-about .hist-node[open] .hist-summary::after { content: "－"; }

.page-about .hist-year {
  flex: none;
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 700;
  color: var(--sand);
}
.page-about .hist-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}
.page-about .hist-body {
  padding: 14px 18px 18px;
  border-top: 1px solid var(--line-soft);
}
.page-about .hist-body p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(245, 247, 250, 0.74);
}
.page-about .hist-body p:last-child { margin-bottom: 0; }
.page-about .hist-body .hist-link { margin: 0; }
.page-about .hist-body .hist-link a {
  font-size: 13.5px;
  color: var(--orange-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 143, 67, 0.4);
  padding-bottom: 1px;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}
.page-about .hist-body .hist-link a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 04 合作 ---------- */
.page-about .partner-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .partner-item {
  padding: 20px 0;
  border-top: 1px solid rgba(227, 178, 90, 0.24);
}
.page-about .partner-item:last-child { border-bottom: 1px solid rgba(227, 178, 90, 0.24); }
.page-about .partner-name {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}
.page-about .partner-count {
  flex: none;
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 700;
  color: var(--sand);
}
.page-about .partner-desc {
  margin: 0;
  max-width: 72ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(245, 247, 250, 0.74);
}

/* ---------- 05 节奏 ---------- */
.page-about .cadence-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0 0 22px;
}
@media (min-width: 700px) {
  .page-about .cadence-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}
.page-about .cadence-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-soft);
}
.page-about .cadence-item dt {
  font-size: 14px;
  color: var(--gray);
}
.page-about .cadence-item dd {
  flex: none;
  margin: 0;
  font-family: var(--font-head);
  font-size: 14.5px;
  font-weight: 700;
  color: var(--cyan);
}
.page-about .cadence-note {
  margin: 0;
  padding: 18px 20px;
  border-left: 2px solid var(--cyan);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(36, 224, 176, 0.06);
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(245, 247, 250, 0.78);
}

/* ---------- 06 编号与归档 ---------- */
.page-about .std-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}
@media (min-width: 820px) {
  .page-about .std-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.page-about .std-item {
  padding: 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--glass);
}
.page-about .std-idx {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sand);
}
.page-about .std-item h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}
.page-about .std-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.72);
}
.page-about .std-note {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--glass);
}
.page-about .std-note p {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(245, 247, 250, 0.78);
}
.page-about .std-note p:last-child { margin-bottom: 0; }
<<<END>>>

.page-about {
  --p: transparent;
}