.page-about {
  --about-gap: clamp(1.5rem, 3vw, 3rem);
  --about-line-hair: 2px solid rgba(244, 239, 230, 0.28);
}

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

.page-about [id] {
  scroll-margin-top: calc(var(--nav-h) + 1.5rem);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding-top: clamp(1rem, 3vw, 1.75rem);
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -22%;
  bottom: -38%;
  width: 62%;
  height: 95%;
  background: var(--green);
  opacity: 0.16;
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -12%;
  top: -18%;
  width: 46%;
  height: 55%;
  background: var(--orange);
  opacity: 0.1;
  transform: rotate(9deg);
  pointer-events: none;
}

.page-about .about-hero .container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .crumb__link,
.page-about .about-hero .crumb__current {
  color: var(--paper);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
  padding-top: clamp(1.5rem, 4vw, 2.75rem);
}

.page-about .about-hero__title {
  font-size: clamp(2.1rem, 6.6vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 900;
  margin: 0.9rem 0 1.15rem;
}

.page-about .about-hero__mark {
  display: inline-block;
  color: var(--moss);
  border-bottom: 6px solid var(--orange);
  padding-bottom: 0.06em;
}

.page-about .about-hero__lead {
  max-width: 40em;
  font-size: var(--fs-lead);
  line-height: 1.8;
  color: var(--fog);
  margin: 0 0 1.5rem;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .about-hero__figure {
  margin: 0;
  border: 2px solid var(--paper);
  box-shadow: 10px 10px 0 var(--orange);
  background: var(--paper);
}

.page-about .about-hero__figure img {
  width: 100%;
  object-fit: cover;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: clamp(2rem, 5vw, 3rem) 0 0;
  border-top: var(--about-line-hair);
  border-left: var(--about-line-hair);
}

.page-about .about-stat {
  padding: 0.9rem 1rem 1rem;
  border-right: var(--about-line-hair);
  border-bottom: var(--about-line-hair);
}

.page-about .about-stat dt {
  font-size: var(--fs-tiny);
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-about .about-stat dd {
  margin: 0.35rem 0 0;
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  font-weight: 700;
  line-height: 1.4;
}

.page-about .about-stat .mono {
  color: var(--orange);
  font-size: 1.5em;
  letter-spacing: -0.02em;
}

/* ---------- 主张 ---------- */
.page-about .about-stance__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-stance__title {
  font-size: clamp(1.7rem, 4.4vw, 2.9rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0.75rem 0 1.25rem;
  max-width: 22em;
}

.page-about .about-stance__aside {
  padding: clamp(1.15rem, 3vw, 1.6rem);
  border: var(--line);
  box-shadow: var(--shadow-sm);
}

.page-about .about-stance__aside-title {
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  margin: 0 0 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 3px solid var(--green);
  display: inline-block;
}

.page-about .about-lines {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-line {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  gap: 0.7rem;
  align-items: start;
}

.page-about .about-line__num {
  display: grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.9rem;
}

.page-about .about-line__body strong {
  display: block;
  font-size: 1.02rem;
  margin-bottom: 0.25rem;
}

.page-about .about-line__body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--ink-dim);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline__head {
  max-width: 46em;
}

.page-about .about-timeline__title {
  font-size: clamp(1.8rem, 4.6vw, 3rem);
  line-height: 1.15;
  margin: 0.7rem 0 0.9rem;
}

.page-about .about-timeline__lead {
  margin: 0;
  font-size: var(--fs-lead);
  line-height: 1.8;
  color: var(--ink-dim);
}

.page-about .about-timeline__figure {
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  border: var(--line);
  box-shadow: var(--shadow-sm);
  background: var(--paper);
}

.page-about .about-timeline__figure img {
  width: 100%;
  object-fit: cover;
}

.page-about .about-timeline__layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: clamp(1.75rem, 4vw, 3rem);
}

.page-about .about-index {
  border: var(--line);
  background: var(--paper);
  padding: 1rem 1.1rem 1.15rem;
}

.page-about .about-index__title {
  margin: 0 0 0.75rem;
  font-size: var(--fs-tiny);
  letter-spacing: 0.22em;
  color: var(--steel);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.15rem;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.5rem 0.35rem 0.5rem 0.6rem;
  border-left: 3px solid transparent;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-about .about-index__link .mono {
  font-size: 0.85rem;
  color: var(--orange);
  font-weight: 700;
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  border-left-color: var(--green);
  background: var(--fog);
  transform: translateX(2px);
}

.page-about .about-index__note {
  margin: 0.9rem 0 0;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--stone);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-about .about-ways {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-ways::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 0.8rem;
  bottom: 0.8rem;
  width: 3px;
  background: linear-gradient(var(--green), var(--orange));
}

.page-about .about-way {
  position: relative;
  padding: 0 0 clamp(1.6rem, 4vw, 2.4rem) 2.7rem;
}

.page-about .about-way::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35rem;
  width: 25px;
  height: 25px;
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--green);
}

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

.page-about .about-way__year {
  display: block;
  font-size: clamp(1.7rem, 4.6vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--orange);
  line-height: 1;
}

.page-about .about-way__title {
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  margin: 0.5rem 0 0.55rem;
  line-height: 1.3;
}

.page-about .about-way__text {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--ink-dim);
  max-width: 40em;
}

.page-about .about-way__more {
  margin-top: 0.85rem;
  border: 2px solid var(--ink);
  background: var(--paper);
}

.page-about .about-way__more summary {
  cursor: pointer;
  list-style: none;
  padding: 0.6rem 2.4rem 0.6rem 0.85rem;
  position: relative;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

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

.page-about .about-way__more summary::after {
  content: "+";
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  color: var(--orange);
  font-size: 1.1rem;
}

.page-about .about-way__more[open] summary::after {
  content: "−";
}

.page-about .about-way__more summary:hover,
.page-about .about-way__more summary:focus-visible {
  background: var(--moss);
}

.page-about .about-way__more p,
.page-about .about-way__list {
  margin: 0;
  padding: 0.2rem 0.85rem 0.9rem;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--ink-dim);
}

.page-about .about-way__list {
  list-style: none;
  padding-left: 0.85rem;
}

.page-about .about-way__list li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.35rem;
}

.page-about .about-way__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  background: var(--green);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-team__title {
  font-size: clamp(1.75rem, 4.4vw, 2.9rem);
  line-height: 1.16;
  margin: 0.7rem 0 1.1rem;
}

.page-about .about-team__figure {
  margin: 0;
  border: var(--line);
  box-shadow: var(--shadow);
  background: var(--fog);
}

.page-about .about-team__figure img {
  width: 100%;
  object-fit: cover;
}

.page-about .about-roles {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-about .about-role {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.2rem 0.9rem;
  align-items: baseline;
  padding: 0.8rem 0.95rem;
  border: 2px solid var(--ink);
  background: var(--fog);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-about .about-role:hover,
.page-about .about-role:focus-within {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-sm);
}

.page-about .about-role__num {
  grid-row: span 2;
  font-size: 1.7rem;
  font-weight: 700;
  line-height: 1;
  color: var(--green);
  transition: color 0.18s var(--ease);
}

.page-about .about-role:hover .about-role__num {
  color: var(--orange);
}

.page-about .about-role__name {
  font-weight: 700;
  font-size: 1rem;
}

.page-about .about-role__note {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--ink-dim);
}

/* ---------- 生态与资质 ---------- */
.page-about .about-eco__head {
  max-width: 48em;
}

.page-about .about-eco__title {
  font-size: clamp(1.75rem, 4.4vw, 2.9rem);
  line-height: 1.16;
  margin: 0.7rem 0 0.9rem;
  color: var(--paper);
}

.page-about .about-eco__lead {
  margin: 0;
  font-size: var(--fs-lead);
  line-height: 1.8;
  color: var(--fog);
}

.page-about .about-eco__grid {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-eco__card {
  padding: 1.1rem 1.15rem 1.25rem;
  border: 2px solid var(--paper);
  background: var(--ink-deep);
  box-shadow: 6px 6px 0 var(--green);
}

.page-about .about-eco__card-title {
  font-size: 1.08rem;
  line-height: 1.4;
  margin: 0 0 0.6rem;
  color: var(--moss);
}

.page-about .about-eco__card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--fog);
}

.page-about .about-honors {
  display: flex;
  gap: 0.85rem;
  overflow-x: auto;
  margin-top: 1.25rem;
  padding-bottom: 0.6rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-honor {
  flex: 0 0 auto;
  min-width: 200px;
  scroll-snap-align: start;
  padding: 0.85rem 1rem;
  border: 2px solid rgba(244, 239, 230, 0.42);
  background: transparent;
}

.page-about .about-honor__year {
  display: block;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--orange);
  margin-bottom: 0.3rem;
}

.page-about .about-honor__name {
  display: block;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--fog);
}

/* ---------- 场景 ---------- */
.page-about .about-scenes__head {
  max-width: 42em;
}

.page-about .about-scenes__title {
  font-size: clamp(1.75rem, 4.4vw, 2.9rem);
  line-height: 1.16;
  margin: 0.7rem 0 0;
}

.page-about .about-scenes__grid {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.page-about .about-scene {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.1rem 1.15rem 1.2rem;
  border: 2px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), background 0.18s var(--ease);
}

.page-about .about-scene:hover,
.page-about .about-scene:focus-visible {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-sm);
  background: var(--moss);
}

.page-about .about-scene__num {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-about .about-scene__title {
  font-size: 1.1rem;
  line-height: 1.35;
  margin: 0;
}

.page-about .about-scene__text {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.72;
  color: var(--ink-dim);
  flex: 1 1 auto;
}

.page-about .about-scene__link {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--ink);
  border-bottom: 3px solid var(--green);
  align-self: flex-start;
  padding-bottom: 0.1em;
}

.page-about .about-scenes__tail {
  margin: 1.35rem 0 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--ink-dim);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta__inner {
  display: grid;
  gap: 1.25rem;
  padding: clamp(1.25rem, 4vw, 2.25rem);
  border: var(--line);
  background: var(--amber);
  box-shadow: var(--shadow);
}

.page-about .about-cta__title {
  font-size: clamp(1.5rem, 3.8vw, 2.3rem);
  line-height: 1.2;
  margin: 0 0 0.7rem;
}

.page-about .about-cta__text {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--ink);
  max-width: 46em;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-eco__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-eco__card:first-child {
    grid-column: 1 / -1;
  }

  .page-about .about-scenes__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .page-about .about-stance__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.95fr);
  }

  .page-about .about-timeline__layout {
    grid-template-columns: minmax(0, 230px) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--nav-h) + 1.5rem);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-about .about-team__figure {
    margin-top: 3.2rem;
  }

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

  .page-about .about-role {
    grid-template-columns: auto minmax(0, 1fr);
  }

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

  .page-about .about-eco__card:first-child {
    grid-column: auto;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    align-items: center;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1120px) {
  .page-about .about-scenes__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__link,
  .page-about .about-role,
  .page-about .about-scene {
    transition: none;
  }

  .page-about .about-index__link:hover,
  .page-about .about-role:hover,
  .page-about .about-scene:hover {
    transform: none;
  }
}