.page-about {
  --about-rail-w: 200px;
  --about-gap: 48px;
  background: var(--xy-cream);
  color: var(--xy-green);
  font-family: var(--xy-font-body);
  padding-bottom: 64px;
}

.page-about .about-inline-link {
  color: var(--xy-orange-deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color .18s ease-out;
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--xy-green);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 52px;
  border-bottom: 1px solid var(--xy-line);
  background:
    radial-gradient(900px 340px at 88% -30%, rgba(245, 166, 35, .24), transparent 68%),
    linear-gradient(180deg, #FFFDF8 0%, var(--xy-cream) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--xy-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--xy-line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: .55;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .7), transparent 82%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .7), transparent 82%);
}

.page-about .about-trail {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
  font-family: var(--xy-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--xy-moss);
}

.page-about .about-trail li {
  display: inline-flex;
  align-items: center;
}

.page-about .about-trail li + li::before {
  content: "/";
  margin: 0 8px;
  color: var(--xy-moss);
  opacity: .55;
}

.page-about .about-trail a {
  color: var(--xy-moss);
  text-decoration: none;
  transition: color .18s ease-out;
}

.page-about .about-trail a:hover,
.page-about .about-trail a:focus-visible {
  color: var(--xy-orange-deep);
}

.page-about .about-trail [aria-current="page"] {
  color: var(--xy-green);
  font-weight: 500;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 26px;
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-family: var(--xy-font-display);
  font-weight: 700;
  font-size: clamp(28px, 7.4vw, 56px);
  line-height: 1.14;
  letter-spacing: .01em;
  color: var(--xy-green);
}

.page-about .about-hero__lede {
  margin: 0 0 20px;
  max-width: 32em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--xy-moss);
}

.page-about .about-hero__note {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--xy-orange);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--xy-moss);
}

/* ---------- 骨架 ---------- */
.page-about .about-shell {
  display: block;
}

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

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

/* ---------- 章节通用 ---------- */
.page-about .about-block {
  padding: 46px 0;
  border-top: 1px solid var(--xy-line);
  scroll-margin-top: 92px;
}

.page-about .about-block:first-child {
  border-top: 0;
}

.page-about .about-block__head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.page-about .about-block__idx {
  font-family: var(--xy-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--xy-apricot);
  color: var(--xy-green);
}

.page-about .about-block__title {
  margin: 0;
  font-family: var(--xy-font-display);
  font-weight: 700;
  font-size: clamp(21px, 4.6vw, 30px);
  line-height: 1.25;
  letter-spacing: .01em;
  color: var(--xy-green);
}

.page-about .about-text {
  margin: 0 0 18px;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--xy-moss);
}

.page-about .about-text strong {
  color: var(--xy-green);
  font-weight: 600;
}

.page-about .about-flow__note {
  margin-top: 24px;
  margin-bottom: 0;
  font-size: 14.5px;
}

.page-about .about-subtitle {
  margin: 36px 0 0;
  padding-left: 12px;
  border-left: 3px solid var(--xy-orange);
  font-family: var(--xy-font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--xy-green);
}

.page-about .about-subtitle + .about-text {
  margin-top: 12px;
}

/* ---------- 深色与浅杏区块 ---------- */
.page-about .about-block--dark {
  border-top: 0;
  border-radius: var(--xy-radius);
  padding: 32px 22px 38px;
  margin: 12px 0;
  color: var(--xy-cream);
  background: linear-gradient(163deg, var(--xy-green) 0%, var(--xy-green-deep) 100%);
}

.page-about .about-block--dark .about-block__title {
  color: var(--xy-cream);
}

.page-about .about-block--dark .about-block__idx {
  background: var(--xy-orange);
  color: var(--xy-green-deep);
}

.page-about .about-block--dark .about-text {
  color: rgba(251, 247, 239, .78);
}

.page-about .about-block--dark .about-text strong {
  color: var(--xy-cream);
}

.page-about .about-block--dark .about-inline-link {
  color: var(--xy-gold);
}

.page-about .about-block--apricot {
  border-top: 0;
  border-radius: var(--xy-radius);
  padding: 32px 22px 38px;
  margin: 12px 0;
  background: linear-gradient(163deg, #FFF7E6 0%, var(--xy-apricot) 100%);
}

.page-about .about-block--apricot .about-text {
  color: var(--xy-green);
}

.page-about .about-block--apricot .about-inline-link {
  color: var(--xy-green);
  text-decoration-color: var(--xy-orange-deep);
}

/* ---------- 三块主张 ---------- */
.page-about .pillars {
  display: grid;
  gap: 16px;
  margin: 26px 0 0;
}

.page-about .pillar {
  position: relative;
  background: #fff;
  border: 1px solid var(--xy-line);
  border-left: 3px solid var(--xy-orange);
  border-radius: var(--xy-radius-sm);
  padding: 20px 18px 22px;
  box-shadow: var(--xy-shadow);
  transition: transform .2s ease-out, box-shadow .2s ease-out;
}

.page-about .pillar:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 36px -26px rgba(31, 58, 46, .5);
}

.page-about .pillar__num {
  font-family: var(--xy-font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--xy-orange-deep);
}

.page-about .pillar__name {
  margin: 8px 0 10px;
  font-family: var(--xy-font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--xy-green);
}

.page-about .pillar__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--xy-moss);
}

/* ---------- 图 ---------- */
.page-about .about-figure {
  margin: 30px 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--xy-radius);
  border: 1px solid var(--xy-line);
  background: var(--xy-warm-gray);
  object-fit: cover;
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-family: var(--xy-font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  line-height: 1.65;
  color: var(--xy-moss);
}

.page-about .about-block--dark .about-figure img {
  border-color: rgba(251, 247, 239, .18);
}

.page-about .about-block--dark .about-figure figcaption {
  color: rgba(251, 247, 239, .6);
}

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

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 26px 0 0;
  padding: 0 0 0 28px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--xy-orange) 0%, rgba(245, 166, 35, .14) 100%);
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: 26px;
}

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

.page-about .timeline__dot {
  position: absolute;
  left: -28px;
  top: 5px;
  width: 13px;
  height: 13px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--xy-green-deep);
  border: 2px solid var(--xy-orange);
  transition: transform .2s ease-out, background-color .2s ease-out;
}

.page-about .timeline__item:hover .timeline__dot {
  transform: scale(1.25);
  background: var(--xy-orange);
}

.page-about .timeline__year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--xy-font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--xy-gold);
}

.page-about .timeline__title {
  margin: 0 0 8px;
  font-family: var(--xy-font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--xy-cream);
}

.page-about .timeline__desc {
  margin: 0;
  max-width: 34em;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(251, 247, 239, .76);
  transition: color .2s ease-out;
}

.page-about .timeline__item:hover .timeline__desc {
  color: rgba(251, 247, 239, .95);
}

/* ---------- 团队 ---------- */
.page-about .team-layout {
  display: grid;
  gap: 26px;
  margin-top: 24px;
}

.page-about .team-list {
  display: grid;
  gap: 10px;
}

.page-about .team-item {
  background: #fff;
  border: 1px solid var(--xy-line);
  border-radius: var(--xy-radius-sm);
  overflow: hidden;
  transition: border-color .2s ease-out;
}

.page-about .team-item[open] {
  border-color: rgba(245, 166, 35, .55);
}

.page-about .team-item > summary {
  list-style: none;
  cursor: pointer;
  padding: 15px 16px 13px;
  transition: background-color .18s ease-out;
}

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

.page-about .team-item > summary:hover {
  background: rgba(255, 227, 176, .32);
}

.page-about .team-item > summary:focus-visible {
  outline: 2px solid var(--xy-orange);
  outline-offset: -2px;
}

.page-about .team-item__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .team-item__name {
  font-family: var(--xy-font-display);
  font-size: 16.5px;
  font-weight: 700;
  color: var(--xy-green);
}

.page-about .team-item__num {
  font-family: var(--xy-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--xy-orange-deep);
}

.page-about .team-item__bar {
  display: block;
  height: 4px;
  border-radius: 999px;
  background: var(--xy-warm-gray);
  overflow: hidden;
}

.page-about .team-item__fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--xy-orange) 0%, var(--xy-gold) 100%);
  transition: width .5s ease-out;
}

.page-about .team-item--edit .team-item__fill { width: 90%; }
.page-about .team-item--design .team-item__fill { width: 70%; }
.page-about .team-item--tech .team-item__fill { width: 100%; }
.page-about .team-item--ops .team-item__fill { width: 60%; }

.page-about .team-item__desc {
  margin: 0;
  padding: 0 16px 16px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--xy-moss);
}

/* ---------- 流程 ---------- */
.page-about .flow {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .flow__step {
  background: rgba(255, 255, 255, .86);
  border: 1px solid rgba(31, 58, 46, .12);
  border-radius: var(--xy-radius-sm);
  padding: 15px 15px 17px;
}

.page-about .flow__idx {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--xy-font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--xy-orange-deep);
}

.page-about .flow__name {
  margin: 0 0 6px;
  font-family: var(--xy-font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--xy-green);
}

.page-about .flow__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--xy-moss);
}

/* ---------- 生态 ---------- */
.page-about .eco-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .eco-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 13px 16px;
  border-radius: var(--xy-radius-sm);
  background: rgba(255, 255, 255, .72);
  border: 1px solid rgba(31, 58, 46, .12);
}

.page-about .eco-item__name {
  font-family: var(--xy-font-display);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--xy-green);
}

.page-about .eco-item__note {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--xy-moss);
}

/* ---------- 规范 ---------- */
.page-about .rules {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .rule {
  padding: 18px 18px 20px;
  background: #fff;
  border: 1px solid var(--xy-line);
  border-top: 2px solid var(--xy-teal);
  border-radius: var(--xy-radius-sm);
}

.page-about .rule__idx {
  display: block;
  margin-bottom: 8px;
  font-family: var(--xy-font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--xy-teal);
}

.page-about .rule__name {
  margin: 0 0 8px;
  font-family: var(--xy-font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--xy-green);
}

.page-about .rule__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--xy-moss);
}

/* ---------- 荣誉与数据 ---------- */
.page-about .about-honor {
  margin-top: 28px;
  padding: 24px 20px;
  border-radius: var(--xy-radius);
  color: var(--xy-cream);
  background: linear-gradient(150deg, var(--xy-green) 0%, var(--xy-teal) 100%);
}

.page-about .about-honor__kicker {
  margin: 0 0 8px;
  font-family: var(--xy-font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--xy-gold);
}

.page-about .about-honor__text {
  margin: 0 0 20px;
  font-family: var(--xy-font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--xy-cream);
}

.page-about .about-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 14px;
  border-top: 1px solid rgba(251, 247, 239, .22);
}

.page-about .about-stats strong {
  font-family: var(--xy-font-display);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--xy-gold);
}

.page-about .about-stats span {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(251, 247, 239, .72);
}

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

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

@media (min-width: 760px) {
  .page-about .pillars {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .pillar:nth-child(2) {
    transform: translateY(16px);
  }

  .page-about .pillar:nth-child(2):hover {
    transform: translateY(12px);
  }
}

@media (min-width: 780px) {
  .page-about .rules {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .team-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 32px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .about-block--dark,
  .page-about .about-block--apricot {
    padding: 38px 34px 44px;
  }

  .page-about .about-honor {
    padding: 30px 28px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 34px 0 74px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 64px;
    align-items: end;
  }
}

@media (min-width: 1000px) {
  .page-about .about-shell {
    display: grid;
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: var(--about-gap);
    align-items: start;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: 92px;
    padding-top: 48px;
  }

  .page-about .about-rail__kicker {
    margin: 0 0 14px;
    font-family: var(--xy-font-mono);
    font-size: 11px;
    letter-spacing: .18em;
    color: var(--xy-moss);
  }

  .page-about .about-rail__list {
    list-style: none;
    margin: 0 0 26px;
    padding: 0;
    display: grid;
    gap: 2px;
    border-left: 1px solid var(--xy-line);
  }

  .page-about .about-rail__link {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-left: -1px;
    padding: 9px 0 9px 14px;
    border-left: 2px solid transparent;
    font-size: 13.5px;
    line-height: 1.45;
    color: var(--xy-moss);
    text-decoration: none;
    transition: color .18s ease-out, border-color .18s ease-out;
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    color: var(--xy-green);
    border-left-color: var(--xy-orange);
  }

  .page-about .about-rail__idx {
    flex: none;
    font-family: var(--xy-font-mono);
    font-size: 11px;
    letter-spacing: .08em;
    color: var(--xy-orange-deep);
  }

  .page-about .about-rail__scale {
    display: grid;
    gap: 10px;
    padding-left: 2px;
  }

  .page-about .about-rail__scale span {
    display: block;
    width: 22px;
    height: 1px;
    background: var(--xy-line-strong);
  }

  .page-about .about-rail__scale span:nth-child(2) { width: 34px; }
  .page-about .about-rail__scale span:nth-child(3) { width: 16px; }
  .page-about .about-rail__scale span:nth-child(4) { width: 30px; }
  .page-about .about-rail__scale span:nth-child(5) { width: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .pillar,
  .page-about .pillar:hover,
  .page-about .pillar:nth-child(2),
  .page-about .pillar:nth-child(2):hover,
  .page-about .timeline__dot,
  .page-about .timeline__item:hover .timeline__dot,
  .page-about .team-item__fill {
    transform: none;
    transition: none;
  }
}
<<<END>>>