.page-about {
  --about-gap: clamp(1.25rem, 3vw, 2rem);
  --about-hair: 1.5px solid rgba(11, 46, 79, 0.16);
  --about-hair-strong: 1.5px solid var(--sea-500);
  display: block;
  overflow-x: clip;
  background: var(--salt);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-about a:focus-visible,
.page-about summary:focus-visible,
.page-about .journey__track:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 面包屑 */
.page-about .about-crumbs {
  padding-top: 1.15rem;
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(1.25rem, 3vw, 2rem) clamp(2.4rem, 6vw, 4.25rem);
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: 6%;
  right: -14%;
  width: 68%;
  height: 88%;
  border-radius: 28px;
  background: linear-gradient(155deg, rgba(244, 232, 214, 0.95), rgba(244, 232, 214, 0));
  transform: rotate(-2.5deg);
  pointer-events: none;
}
.page-about .about-hero .wrap {
  position: relative;
  z-index: 1;
}
.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.75rem);
}
.page-about .about-hero__title {
  margin: 0.7rem 0 1rem;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 6.4vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--sea-900);
  text-wrap: balance;
}
.page-about .about-hero__lede {
  max-width: 34em;
  margin: 0;
  font-size: clamp(1rem, 1.5vw, 1.08rem);
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.page-about .about-hero__panel {
  padding: 1.15rem 1.2rem 0.9rem;
  border: var(--about-hair-strong);
  border-radius: var(--radius-card);
  background: var(--salt);
  box-shadow: 10px 10px 0 var(--sand), var(--shadow-card);
}
.page-about .about-hero__panel-head {
  margin: 0 0 0.5rem;
  padding-bottom: 0.7rem;
  border-bottom: var(--about-hair);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--sea-500);
}

.page-about .metrics {
  margin: 0;
  display: grid;
}
.page-about .metric {
  padding: 0.85rem 0;
  border-top: var(--about-hair);
}
.page-about .metric:first-child {
  border-top: 0;
}
.page-about .metric__label {
  font-family: var(--font-mono);
  font-size: 0.71rem;
  letter-spacing: 0.13em;
  color: var(--sea-500);
}
.page-about .metric__value {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  margin: 0.15rem 0 0.3rem;
}
.page-about .metric__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.55rem, 4vw, 2rem);
  line-height: 1;
  color: var(--sea-900);
  transition: color 0.25s var(--ease);
}
.page-about .metric__unit {
  font-size: 0.84rem;
  color: var(--ink-soft);
}
.page-about .metric__note {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--ink-soft);
  opacity: 0.75;
  transition: opacity 0.25s var(--ease);
}
.page-about .metric:hover .metric__num,
.page-about .metric:focus-within .metric__num {
  color: var(--coral);
}
.page-about .metric:hover .metric__note {
  opacity: 1;
}

/* 章节跳转 */
.page-about .chapter-jump {
  border-block: 1.5px solid var(--mist);
  background: var(--salt);
}
.page-about .chapter-jump__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0.7rem 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-about .chapter-jump__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.42rem 0.9rem;
  border: 1.5px solid var(--mist);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  font-size: 0.84rem;
  color: var(--sea-900);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}
.page-about .chapter-jump__list .mono {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--coral);
}
.page-about .chapter-jump__list a:hover {
  border-color: var(--coral);
  background: var(--sand);
}

/* 章节骨架 */
.page-about .about-section {
  padding-block: clamp(2.6rem, 6vw, 4.75rem);
}
.page-about .about-section--tint {
  background: var(--mist);
}
.page-about .about-section--sand {
  background: var(--sand);
}
.page-about .about-section--deep {
  background: var(--sea-900);
  color: var(--salt);
}
.page-about .chapter {
  display: grid;
  gap: 1.4rem;
}
.page-about .chapter__mark {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding-top: 0.7rem;
  border-top: 3px solid var(--coral);
}
.page-about .chapter__num {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 600;
  line-height: 1;
  color: var(--coral);
}
.page-about .chapter__label {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--sea-500);
}
.page-about .chapter__body {
  min-width: 0;
}
.page-about .chapter__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.6vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--sea-900);
  text-wrap: balance;
}
.page-about .chapter__lede {
  margin: 0 0 1.1rem;
  max-width: 60ch;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .about-section--deep .chapter__label {
  color: rgba(249, 251, 252, 0.7);
}
.page-about .about-section--deep .chapter__num {
  color: var(--sunset);
}
.page-about .about-section--deep .chapter__title {
  color: var(--salt);
}
.page-about .about-section--deep .chapter__lede {
  color: rgba(249, 251, 252, 0.8);
}

/* 品牌起点 */
.page-about .origin {
  display: grid;
  gap: var(--about-gap);
}
.page-about .origin__text {
  min-width: 0;
}
.page-about .origin__text .chapter__lede:last-of-type {
  margin-bottom: 0;
}
.page-about .pull-quote {
  margin: 1.6rem 0 0;
  padding: 1.05rem 1.25rem;
  background: var(--sand);
  border-left: 4px solid var(--coral);
  border-radius: 0 12px 12px 0;
  box-shadow: 9px 9px 0 rgba(220, 227, 232, 0.9);
}
.page-about .pull-quote p {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--sea-900);
}

/* 图片 */
.page-about .about-figure {
  margin: 0;
  min-width: 0;
}
.page-about .about-figure .figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1.5px solid rgba(11, 46, 79, 0.18);
  border-radius: var(--radius-card);
}
.page-about .about-figure .figure__cap {
  margin-top: 0.6rem;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--ink-soft);
}
.page-about .about-section--deep .about-figure .figure__img {
  border-color: rgba(249, 251, 252, 0.28);
}
.page-about .about-section--deep .about-figure .figure__cap {
  color: rgba(249, 251, 252, 0.65);
}

/* 三类价值 */
.page-about .value-list {
  margin-top: 1.6rem;
}
.page-about .value-block {
  display: grid;
  gap: 0.55rem 1.25rem;
  padding: 1.45rem 0;
  border-top: var(--about-hair-strong);
}
.page-about .value-block__num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--coral);
}
.page-about .value-block__text h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
  color: var(--sea-900);
}
.page-about .value-block__text p {
  margin: 0;
  max-width: 46ch;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-about .value-block__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* 发展历程 */
.page-about .journey {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: 1.6rem;
}
.page-about .journey__track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(15rem, 20rem);
  gap: 1.1rem;
  margin: 0;
  padding: 1.1rem 0 0.9rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}
.page-about .stage {
  position: relative;
  padding: 0.9rem 0.9rem 1rem 0;
  border-top: 2px dashed rgba(11, 46, 79, 0.24);
  scroll-snap-align: start;
}
.page-about .stage::before {
  content: "";
  position: absolute;
  top: -7px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 4px var(--salt);
}
.page-about .stage__num {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--sea-500);
}
.page-about .stage__title {
  margin: 0 0 0.45rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--sea-900);
}
.page-about .stage__text {
  margin: 0 0 0.7rem;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* 团队与流程 */
.page-about .team {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.25rem);
  margin-top: 1.6rem;
}
.page-about .team__stats {
  display: grid;
  gap: 1rem;
}
.page-about .stat {
  display: grid;
  gap: 0.25rem;
  padding-top: 0.8rem;
  border-top: 3px solid var(--coral);
}
.page-about .stat__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2.1rem, 6vw, 3rem);
  line-height: 1;
  color: var(--sea-900);
}
.page-about .stat__label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--sea-500);
}
.page-about .stat__text {
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-about .flow {
  margin-bottom: 0.7rem;
  background: var(--salt);
  border: var(--about-hair);
  border-radius: 14px;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.page-about .flow:hover {
  border-color: var(--coral);
  transform: translateY(-2px);
}
.page-about .flow__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.95rem 1.1rem;
  cursor: pointer;
  list-style: none;
}
.page-about .flow__head::-webkit-details-marker {
  display: none;
}
.page-about .flow__head::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--coral);
}
.page-about .flow[open] .flow__head::after {
  content: "–";
}
.page-about .flow__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--coral);
}
.page-about .flow__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--sea-900);
}
.page-about .flow__body {
  padding: 0 1.1rem 1.05rem;
  border-top: 1.5px solid var(--mist);
  margin-top: 0.1rem;
}
.page-about .flow__body p {
  margin: 0.85rem 0 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* 覆盖与合作 */
.page-about .coverage {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.25rem);
  margin-top: 1.5rem;
}
.page-about .coverage__stats {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .coverage__stat {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 0.85rem;
  padding: 0.95rem 0;
  border-top: 1px solid rgba(249, 251, 252, 0.22);
}
.page-about .coverage__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 4.5vw, 2.1rem);
  line-height: 1;
  color: var(--sunset);
}
.page-about .coverage__label {
  font-size: 0.88rem;
  line-height: 1.75;
  color: rgba(249, 251, 252, 0.82);
}
.page-about .coverage__note {
  margin: 1.2rem 0 0;
  max-width: 46ch;
  font-size: 0.85rem;
  line-height: 1.8;
  color: rgba(249, 251, 252, 0.62);
}
.page-about .about-section--deep .tag {
  border-color: rgba(249, 251, 252, 0.4);
  color: var(--salt);
}

/* 继续了解 */
.page-about .next {
  display: grid;
  gap: 1.6rem;
}
.page-about .next__intro .chapter__lede {
  margin-bottom: 0;
}
.page-about .next__links {
  margin: 0;
  padding: 0;
  list-style: none;
  border-bottom: 1.5px solid var(--mist);
}
.page-about .next__link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.3rem 1rem;
  padding: 1rem 0.35rem;
  border-top: 1.5px solid var(--mist);
  text-decoration: none;
  color: var(--ink);
  transition: background-color 0.2s var(--ease), padding-left 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-about .next__link:hover {
  background: var(--sand);
  padding-left: 0.8rem;
  border-color: var(--coral);
}
.page-about .next__label {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--sea-900);
}
.page-about .next__desc {
  grid-column: 1;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--ink-soft);
}
.page-about .next__arrow {
  grid-column: 2;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--coral);
  transition: transform 0.2s var(--ease);
}
.page-about .next__link:hover .next__arrow {
  transform: translateX(4px);
}

/* 响应式 */
@media (min-width: 640px) {
  .page-about .team__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
  .page-about .chapter {
    grid-template-columns: 10.5rem minmax(0, 1fr);
    gap: 2.75rem;
    align-items: start;
  }
  .page-about .origin {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: start;
  }
  .page-about .value-block {
    grid-template-columns: 3.5rem minmax(0, 1fr) 13rem;
    align-items: start;
  }
  .page-about .value-block:nth-child(2) {
    margin-left: clamp(0.75rem, 3vw, 2.25rem);
  }
  .page-about .value-block:nth-child(3) {
    margin-left: clamp(1.5rem, 6vw, 4.5rem);
  }
  .page-about .journey {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
  .page-about .team {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
  .page-about .team__stats {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-about .coverage {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
  }
  .page-about .next {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 2.5rem;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    transform: none !important;
  }
}
<<<END>>>