.page-about {
  --about-line: rgba(23, 63, 53, 0.13);
  --about-line-soft: rgba(23, 63, 53, 0.08);
  --about-radius: 24px;
  --about-pad: clamp(20px, 3.4vw, 34px);
  display: block;
  background: var(--cream);
  color: var(--ink);
}

.page-about .about-crumb {
  padding-top: clamp(14px, 2.4vw, 22px);
}

.page-about .about-crumb .breadcrumbs__link,
.page-about .about-crumb .breadcrumbs__current {
  color: var(--mist);
  font-size: 14px;
}

.page-about .about-crumb .breadcrumbs__link:hover {
  color: var(--orange-deep);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(22px, 4vw, 44px) 0 clamp(34px, 6vw, 62px);
  background:
    radial-gradient(115% 85% at 88% -8%, rgba(232, 134, 59, 0.18), transparent 62%),
    radial-gradient(90% 78% at -6% 104%, rgba(23, 63, 53, 0.11), transparent 66%),
    var(--cream);
  overflow: hidden;
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(26px, 4.5vw, 46px);
  align-items: center;
}

.page-about .about-hero__lede h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.6vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink-green);
}

.page-about .about-hero__lede .lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: clamp(15.5px, 2.1vw, 17.5px);
  line-height: 1.78;
  color: var(--ink);
}

.page-about .about-hero__facts {
  display: grid;
  gap: 12px;
  margin-top: 26px;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 252, 246, 0.86);
  border: 1px solid var(--about-line-soft);
  box-shadow: var(--shadow-soft);
}

.page-about .about-fact__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 24px;
  line-height: 1.15;
  color: var(--orange-deep);
  letter-spacing: -0.01em;
}

.page-about .about-fact__label {
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--mist);
}

.page-about .about-hero__visual {
  margin: 0;
  border-radius: var(--about-radius);
  overflow: hidden;
  box-shadow: var(--shadow-lift);
}

.page-about .about-hero__svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 章节索引条 ---------- */
.page-about .about-jump-wrap {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  padding: 10px 0;
  background: rgba(247, 240, 228, 0.94);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--about-line-soft);
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-jump {
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-jump::-webkit-scrollbar {
  display: none;
}

.page-about .about-jump__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  width: max-content;
}

.page-about .about-jump__link {
  display: block;
  padding: 8px 16px;
  border-radius: var(--pill);
  border: 1px solid var(--about-line);
  background: var(--cream-hi);
  color: var(--ink-green);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 200ms ease, color 200ms ease, border-color 200ms ease;
}

.page-about .about-jump__link:hover,
.page-about .about-jump__link:focus-visible {
  background: var(--apricot);
  border-color: var(--orange);
  color: var(--orange-deep);
}

.page-about .about-jump__link[aria-current="true"] {
  background: var(--ink-green);
  border-color: var(--ink-green);
  color: var(--cream);
}

/* ---------- 内容区块 ---------- */
.page-about .about-band {
  padding: clamp(40px, 7vw, 78px) 0;
}

.page-about .about-band--tint {
  background: linear-gradient(180deg, rgba(251, 231, 210, 0.62), rgba(251, 231, 210, 0.28));
}

.page-about .about-band--ink {
  background:
    radial-gradient(90% 70% at 12% 0%, rgba(232, 134, 59, 0.22), transparent 60%),
    var(--ink-green);
  color: var(--cream);
}

.page-about .about-hand {
  margin: 0 0 10px;
  font-family: var(--font-hand);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--orange-deep);
}

.page-about .about-hand--onDark {
  color: var(--amber);
}

.page-about .about-band h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.4vw, 38px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--ink-green);
}

.page-about .about-band--ink h2 {
  color: var(--cream);
}

.page-about .about-band p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .about-band--ink p {
  color: var(--on-dark);
}

.page-about .about-head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-head__note {
  color: var(--mist);
}

.page-about .about-band--ink .about-head__note {
  color: var(--on-dark-soft);
}

/* ---------- 非对称图文 ---------- */
.page-about .about-split {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

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

.page-about .about-split__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--about-radius);
  box-shadow: var(--shadow-soft);
  object-fit: cover;
}

.page-about .about-split__figure figcaption {
  margin-top: 10px;
  font-family: var(--font-serif);
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-split__text p {
  max-width: 54ch;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  margin: clamp(30px, 5vw, 48px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--orange), var(--sand) 55%, rgba(216, 185, 138, 0.2));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 26px 38px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--cream-hi);
  border: 2.5px solid var(--orange);
  transition: background-color 200ms ease, border-color 200ms ease, transform 200ms ease;
}

.page-about .about-timeline__item:hover::before {
  background: var(--orange);
  border-color: var(--orange-deep);
  transform: scale(1.08);
}

.page-about .about-timeline__year {
  display: inline-block;
  margin-bottom: 6px;
  padding: 4px 12px;
  border-radius: var(--pill);
  background: var(--apricot);
  color: var(--orange-deep);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-about .about-timeline__body {
  padding: 16px 20px 18px;
  border-radius: 20px;
  border: 1px solid var(--about-line-soft);
  background: var(--cream-hi);
  transition: box-shadow 220ms ease, transform 220ms ease, border-color 220ms ease;
}

.page-about .about-timeline__item:hover .about-timeline__body {
  transform: translateY(-2px);
  border-color: rgba(232, 134, 59, 0.4);
  box-shadow: var(--shadow-lift);
}

.page-about .about-timeline__body h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--ink-green);
}

.page-about .about-timeline__body p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.76;
}

/* ---------- 团队与运营 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(22px, 3.6vw, 38px);
  align-items: start;
}

.page-about .about-team__figure {
  margin: 0;
  border-radius: var(--about-radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

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

.page-about .about-team__list {
  display: grid;
  gap: 12px;
}

.page-about .about-team__item {
  border-radius: 18px;
  border: 1px solid var(--about-line);
  background: var(--cream-hi);
  padding: 0 18px;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}

.page-about .about-team__item[open] {
  border-color: rgba(232, 134, 59, 0.5);
  box-shadow: var(--shadow-soft);
}

.page-about .about-team__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-green);
}

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

.page-about .about-team__item summary::after {
  content: "+";
  flex: none;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--apricot);
  color: var(--orange-deep);
  font-size: 17px;
  line-height: 1;
  transition: transform 220ms ease, background-color 220ms ease;
}

.page-about .about-team__item[open] summary::after {
  content: "−";
  background: var(--orange);
  color: #fff;
}

.page-about .about-team__item p {
  margin: 0;
  padding: 0 0 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

/* ---------- 工具库维护 ---------- */
.page-about .about-tools {
  display: grid;
  gap: clamp(22px, 3.6vw, 36px);
}

.page-about .about-tools__stats {
  display: grid;
  gap: 12px;
}

.page-about .about-tool-stat {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(247, 240, 228, 0.1);
  border: 1px solid rgba(247, 240, 228, 0.18);
}

.page-about .about-tool-stat__num {
  flex: none;
  min-width: 2.2ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 42px);
  line-height: 1;
  color: var(--amber);
  letter-spacing: -0.02em;
}

.page-about .about-tool-stat__label {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--on-dark);
}

.page-about .about-tools__catsTitle {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 19px;
  color: var(--cream);
}

.page-about .about-cats {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.page-about .about-cat {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(247, 240, 228, 0.94);
  border-left: 3px solid var(--orange);
}

.page-about .about-cat__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15.5px;
  color: var(--ink-green);
}

.page-about .about-cat__desc {
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

.page-about .about-tools__note {
  margin-top: 18px;
  font-size: 14.5px;
  color: var(--on-dark-soft);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 14px;
}

.page-about .about-partner {
  padding: 22px 22px 24px;
  border-radius: 20px;
  background: var(--cream-hi);
  border: 1px solid var(--about-line-soft);
  border-top: 3px solid var(--orange);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.page-about .about-partner:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.page-about .about-partner h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--ink-green);
}

.page-about .about-partner p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.76;
}

.page-about .about-partner-note {
  margin-top: 22px;
  font-size: 15px;
  color: var(--mist);
}

.page-about .about-inline-link {
  color: var(--orange-deep);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}

.page-about .about-inline-link:hover {
  color: var(--ink-green);
}

.page-about .about-band--ink .about-inline-link {
  color: var(--amber);
}

/* ---------- 下一站 ---------- */
.page-about .about-next__grid {
  display: grid;
  gap: 14px;
}

.page-about .about-next__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 22px 26px;
  border-radius: 22px;
  background: var(--cream-hi);
  border: 1px solid var(--about-line-soft);
  text-decoration: none;
  color: inherit;
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(232, 134, 59, 0.55);
  box-shadow: var(--shadow-lift);
}

.page-about .about-next__tag {
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: var(--pill);
  background: var(--ink-green);
  color: var(--cream);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-about .about-next__card h3 {
  margin: 4px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  color: var(--ink-green);
}

.page-about .about-next__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-next__go {
  margin-top: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--orange-deep);
}

.page-about .about-contact {
  display: grid;
  gap: 18px;
  margin-top: clamp(26px, 4vw, 40px);
  padding: clamp(22px, 3.4vw, 32px);
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(232, 134, 59, 0.14), rgba(23, 63, 53, 0.08));
  border: 1px solid var(--about-line);
}

.page-about .about-contact h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  color: var(--ink-green);
}

.page-about .about-contact__text p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.78;
}

.page-about .about-contact__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-contact__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--about-line);
}

.page-about .about-contact__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-contact__term {
  flex: none;
  min-width: 3em;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--orange-deep);
}

.page-about .about-contact__value {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink-green);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-timeline__item {
    padding-left: 46px;
  }

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

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

  .page-about .about-contact {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: clamp(30px, 4.5vw, 56px);
  }

  .page-about .about-split {
    grid-template-columns: 1fr 1.05fr;
    gap: clamp(32px, 5vw, 60px);
  }

  .page-about .about-split--reverse {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .page-about .about-split--reverse .about-split__text {
    order: 2;
  }

  .page-about .about-split--reverse .about-split__figure {
    order: 1;
  }

  .page-about .about-split__figure--tall {
    margin-top: 6px;
  }

  .page-about .about-team {
    grid-template-columns: 0.95fr 1.05fr;
    gap: clamp(28px, 4vw, 46px);
    align-items: center;
  }

  .page-about .about-tools {
    grid-template-columns: 0.72fr 1.28fr;
    gap: clamp(28px, 4vw, 48px);
    align-items: start;
  }

  .page-about .about-tools__stats {
    position: sticky;
    top: calc(var(--header-h) + 72px);
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero__lede .lede {
    font-size: 17.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__item:hover::before,
  .page-about .about-timeline__item:hover .about-timeline__body,
  .page-about .about-partner:hover,
  .page-about .about-next__card:hover {
    transform: none;
  }
}
<<<END>>>