.page-about {
  background: var(--paper);
  color: var(--ink-text);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: clamp(1.5rem, 3.5vw, 2.5rem);
  padding-bottom: clamp(2.25rem, 5vw, 3.75rem);
  color: var(--paper);
  background:
    radial-gradient(90% 70% at 84% -6%, rgba(31, 79, 66, 0.9), transparent 62%),
    radial-gradient(60% 55% at 4% 104%, rgba(200, 255, 61, 0.11), transparent 70%),
    var(--ink-900);
  border-bottom: 3px solid var(--accent);
}

.page-about .about-hero .breadcrumbs {
  color: rgba(244, 239, 227, 0.55);
}

.page-about .about-hero .breadcrumbs a {
  color: rgba(244, 239, 227, 0.82);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.75rem);
  margin-top: clamp(1.5rem, 3.5vw, 2.5rem);
  align-items: end;
}

.page-about .about-hero__intro .eyebrow {
  color: var(--accent);
}

.page-about .about-hero .display {
  color: var(--paper);
  margin-top: 0.75rem;
  text-wrap: balance;
}

.page-about .about-hero .lede {
  margin-top: 1.1rem;
  color: rgba(244, 239, 227, 0.78);
  max-width: 44ch;
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin: clamp(1.25rem, 3vw, 1.85rem) 0 0;
  padding: 1.1rem 0 0;
  border-top: 1px solid var(--line-dark);
  list-style: none;
}

.page-about .about-hero__facts li {
  font-size: 0.9rem;
  line-height: 1.5;
  color: rgba(244, 239, 227, 0.74);
}

.page-about .about-hero__facts .mono {
  margin-right: 0.4rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-dark);
  background: var(--char-900);
}

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

.page-about .about-figure--hero {
  aspect-ratio: 16 / 10;
}

.page-about .about-figure--body {
  aspect-ratio: 4 / 3;
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-about .about-figure--eco {
  aspect-ratio: 3 / 2;
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-about .about-figure--hero img,
.page-about .about-figure--body img,
.page-about .about-figure--eco img {
  height: 100%;
}

.page-about .about-figure__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2.25rem 1.25rem 0.95rem;
  font-size: 0.8rem;
  line-height: 1.6;
  color: rgba(244, 239, 227, 0.86);
  background: linear-gradient(to top, rgba(11, 31, 26, 0.92), rgba(11, 31, 26, 0));
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapters {
  display: block;
}

.page-about .about-chapter {
  padding: clamp(2.25rem, 5.5vw, 4rem) 0;
  scroll-margin-top: 7rem;
}

.page-about .about-chapter + .about-chapter {
  border-top: 1px solid var(--line-light);
}

.page-about .about-chapter__grid {
  display: grid;
  gap: 1.1rem;
}

.page-about .about-chapter__plate {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding-top: 0.55rem;
  border-top: 2px solid var(--ink-900);
}

.page-about .about-chapter__num {
  font-size: 1.65rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-about .about-chapter__label {
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--gray);
}

.page-about .about-chapter__body > * + * {
  margin-top: 1.05rem;
}

.page-about .about-chapter__body .heading {
  max-width: 22ch;
  color: var(--ink-900);
  text-wrap: balance;
}

.page-about .about-chapter__body > p {
  max-width: 66ch;
  line-height: 1.85;
  color: var(--ink-text-soft);
}

.page-about .about-chapter__body > p:first-of-type {
  color: var(--ink-text);
}

.page-about .about-chapter--dark {
  color: var(--paper);
  background:
    radial-gradient(80% 60% at 92% 0%, rgba(31, 79, 66, 0.72), transparent 66%),
    linear-gradient(180deg, var(--char-900), var(--ink-900));
}

.page-about .about-chapter--dark .about-chapter__plate {
  border-top-color: rgba(244, 239, 227, 0.32);
}

.page-about .about-chapter--dark .about-chapter__num {
  color: var(--accent);
}

.page-about .about-chapter--dark .about-chapter__label {
  color: rgba(244, 239, 227, 0.6);
}

.page-about .about-chapter--dark .heading {
  color: var(--paper);
}

.page-about .about-chapter--dark .about-chapter__body > p {
  color: rgba(244, 239, 227, 0.74);
}

/* ---------- 02 分层卡片 ---------- */
.page-about .about-phases {
  display: grid;
  gap: 0.9rem;
  margin-top: clamp(1.35rem, 3vw, 1.9rem);
}

.page-about .about-phase {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.25rem 1.2rem 1.4rem;
  border: 1px solid var(--line-light);
  border-top: 3px solid var(--gray);
  border-radius: var(--radius);
  background: var(--ivory);
}

.page-about .about-phase--pre {
  border-top-color: var(--accent);
}

.page-about .about-phase--live {
  border-top-color: var(--data);
}

.page-about .about-phase--post {
  border-top-color: var(--gray);
}

.page-about .about-phase__head {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.page-about .about-phase__head h3 {
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-about .about-phase ul {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-phase li {
  position: relative;
  padding-left: 0.95rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--ink-text-soft);
}

.page-about .about-phase li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gray);
}

.page-about .about-phase--pre li::before {
  background: var(--accent);
}

.page-about .about-phase--live li::before {
  background: var(--data);
}

/* ---------- 03 团队 ---------- */
.page-about .about-team {
  margin-top: clamp(1.35rem, 3vw, 1.9rem);
  padding: clamp(1.35rem, 3.5vw, 2rem);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(200, 255, 61, 0.2);
  background:
    radial-gradient(90% 80% at 100% 0%, rgba(31, 79, 66, 0.78), transparent 62%),
    linear-gradient(150deg, var(--ink-800), var(--char-900));
  color: var(--paper);
  box-shadow: var(--shadow);
}

.page-about .about-team__total {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  color: rgba(244, 239, 227, 0.7);
}

.page-about .about-team__total .mono {
  margin-right: 0.35rem;
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--accent);
}

.page-about .about-team__rows {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 3.25rem;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 0.5rem 0.85rem;
  padding: 0.85rem 0 0.9rem;
  border-top: 1px solid var(--line-dark);
}

.page-about .about-team__role {
  grid-column: 1;
  grid-row: 1;
  font-size: 0.94rem;
  color: rgba(244, 239, 227, 0.92);
}

.page-about .about-team__count {
  grid-column: 2;
  grid-row: 1 / span 2;
  text-align: right;
  font-size: 1.45rem;
  font-weight: 800;
  line-height: 1;
  color: var(--accent);
}

.page-about .about-team__track {
  grid-column: 1;
  grid-row: 2;
  display: block;
  height: 6px;
  border-radius: 999px;
  background: rgba(244, 239, 227, 0.13);
  overflow: hidden;
}

.page-about .about-team__fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal-deep), var(--data));
}

.page-about .about-team__fill--1 { width: 42%; }
.page-about .about-team__fill--2 { width: 29%; }
.page-about .about-team__fill--3 { width: 16%; }
.page-about .about-team__fill--4 { width: 13%; }

/* ---------- 04 发展节点 ---------- */
.page-about .about-road {
  position: relative;
  display: grid;
  gap: 0;
  margin: clamp(1.4rem, 3vw, 2rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-road__stop {
  position: relative;
  display: grid;
  grid-template-columns: 1.75rem minmax(0, 1fr);
  gap: 0 1rem;
  padding-bottom: clamp(1.25rem, 2.5vw, 1.75rem);
}

.page-about .about-road__stop::before {
  content: "";
  position: absolute;
  left: 0.85rem;
  top: 1.35rem;
  bottom: 0;
  border-left: 2px dashed rgba(200, 255, 61, 0.34);
}

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

.page-about .about-road__stop:last-child::before {
  display: none;
}

.page-about .about-road__dot {
  grid-column: 1;
  justify-self: center;
  align-self: start;
  width: 12px;
  height: 12px;
  margin-top: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(200, 255, 61, 0.15);
}

.page-about .about-road__card {
  grid-column: 2;
  display: grid;
  gap: 0.35rem;
}

.page-about .about-road__year {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--accent);
}

.page-about .about-road__card p + p {
  max-width: 58ch;
  font-size: 0.92rem;
  line-height: 1.78;
  color: rgba(244, 239, 227, 0.76);
}

/* ---------- 05 合作生态 ---------- */
.page-about .about-eco {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.35rem, 3vw, 1.9rem);
}

.page-about .about-eco__panel {
  padding: 1.25rem 1.2rem 1.4rem;
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  background: var(--ivory);
}

.page-about .about-eco__stat {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line-light);
}

.page-about .about-eco__num {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink-900);
}

.page-about .about-eco__unit {
  font-size: 0.92rem;
  color: var(--ink-text-soft);
}

.page-about .about-eco__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-eco__more {
  margin-top: 1rem;
}

.page-about .about-eco__more summary {
  cursor: pointer;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  color: var(--teal-deep);
  padding: 0.35rem 0;
  list-style: none;
}

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

.page-about .about-eco__more summary::before {
  content: "+ ";
  font-family: var(--font-mono);
  color: var(--gray);
}

.page-about .about-eco__more[open] summary::before {
  content: "– ";
}

.page-about .about-eco__more .about-eco__tags {
  margin-top: 0.6rem;
}

.page-about .about-honors {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.9rem;
  margin: clamp(1.35rem, 3vw, 1.8rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-honors li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--ink-text-soft);
}

.page-about .about-honors li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--teal-deep);
}

/* ---------- 06 服务标准 ---------- */
.page-about .about-standards {
  display: grid;
  gap: 0;
  margin: clamp(1.35rem, 3vw, 1.9rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-standards__item {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 0 0.85rem;
  padding: 1.1rem 0;
  border-top: 1px solid var(--line-light);
}

.page-about .about-standards__item:last-child {
  border-bottom: 1px solid var(--line-light);
}

.page-about .about-standards__num {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gray);
  padding-top: 0.28rem;
}

.page-about .about-standards__item h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink-900);
}

.page-about .about-standards__item p {
  margin: 0;
  max-width: 62ch;
  font-size: 0.91rem;
  line-height: 1.8;
  color: var(--ink-text-soft);
}

.page-about .about-standards__item a {
  color: var(--teal-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 结尾 ---------- */
.page-about .about-next {
  padding: 0 0 clamp(2.5rem, 6vw, 4.5rem);
  background: var(--paper);
}

.page-about .about-next__panel {
  display: grid;
  gap: 1.5rem;
  padding: clamp(1.6rem, 4vw, 2.5rem);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(85% 90% at 96% 4%, rgba(31, 79, 66, 0.8), transparent 62%),
    linear-gradient(120deg, var(--ink-900), var(--char-900));
  color: var(--paper);
}

.page-about .about-next__text .eyebrow {
  color: var(--accent);
}

.page-about .about-next__title {
  margin: 0.6rem 0 0;
  max-width: 26ch;
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-next__text p + p {
  margin-top: 0.7rem;
  max-width: 46ch;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(244, 239, 227, 0.74);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-phases {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-next__panel {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: center;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-about .about-chapter__grid {
    grid-template-columns: 10.5rem minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-chapter__plate {
    position: sticky;
    top: 7.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .page-about .about-figure--body {
    margin-top: clamp(1.75rem, 3.5vw, 2.5rem);
  }
}

@media (min-width: 1100px) {
  .page-about .about-road__stop {
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0 1.5rem;
  }

  .page-about .about-road__stop::before {
    left: 0.97rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-road__dot {
    box-shadow: none;
  }
}
</deepseek_placeholder>