.page-about {
  --about-h2: clamp(23px, 3.3vw, 38px);
  --about-gap: clamp(18px, 3vw, 32px);
}

.page-about .about-crumbs {
  padding-block: 16px 0;
}

.page-about .about-h2 {
  font-family: var(--font-display);
  font-size: var(--about-h2);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
  color: var(--white);
}

.page-about .about-sub {
  margin: 0;
  max-width: 62ch;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-section-head {
  max-width: 760px;
}

.page-about .about-section-head .eyebrow {
  margin-bottom: 12px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(20px, 3vw, 36px) clamp(36px, 6vw, 72px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 30px;
}

.page-about .about-hero__copy .eyebrow {
  margin: 0 0 14px;
}

.page-about .about-hero__copy .display-title {
  font-size: clamp(30px, 4.8vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  margin: 0 0 18px;
}

.page-about .about-hero__copy .lede {
  max-width: 56ch;
  color: var(--text-dim);
  line-height: 1.85;
  margin: 0;
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 26px 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 12px;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  background: rgba(18, 43, 68, 0.72);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: 3px 14px 3px 14px;
}

.page-about .about-hero__facts .num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 26px);
  color: var(--orange);
  line-height: 1.1;
}

.page-about .about-hero__facts span:last-child {
  font-size: 12.5px;
  color: var(--text-soft);
  letter-spacing: 0.02em;
}

.page-about .about-hero__actions {
  gap: 12px;
}

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

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px 38px 4px 38px;
  clip-path: var(--notch-lg);
  filter: saturate(0.85) contrast(1.05);
}

.page-about .about-hero__figure figcaption {
  margin-top: 10px;
  padding-left: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--text-soft);
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: center;
    gap: 46px;
  }
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  padding-block: clamp(36px, 6vw, 80px);
}

.page-about .about-origin__grid {
  display: grid;
  gap: 24px;
}

.page-about .about-origin__lead .slant-rule {
  display: block;
  width: 88px;
  margin-top: 6px;
}

.page-about .about-origin__body p {
  margin: 0 0 16px;
  color: var(--text-dim);
  line-height: 1.85;
  font-size: 15.5px;
}

.page-about .about-origin__body p:last-child {
  margin-bottom: 0;
}

.page-about .about-quote {
  font-family: var(--font-serif);
  font-size: clamp(18px, 2.1vw, 23px);
  line-height: 1.72;
  color: var(--bone);
  border-left: 3px solid var(--clay);
  padding-left: 18px;
  margin-bottom: 22px !important;
}

@media (min-width: 860px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 52px;
  }

  .page-about .about-origin__lead {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
    align-self: start;
  }
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline-section {
  padding-block: clamp(36px, 6vw, 80px);
}

.page-about .about-timeline {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
  position: relative;
}

.page-about .about-timeline__item {
  display: grid;
  gap: 8px;
  position: relative;
}

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.08em;
  color: var(--clay);
}

.page-about .about-timeline__panel {
  background: linear-gradient(148deg, rgba(18, 43, 68, 0.96), rgba(42, 48, 56, 0.72));
  border: 1px solid var(--line);
  border-radius: 3px 20px 3px 20px;
  padding: 16px 18px;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-about .about-timeline__panel:hover {
  border-color: var(--line-strong);
}

.page-about .about-timeline__panel summary {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(15.5px, 1.9vw, 19px);
  line-height: 1.4;
  color: var(--white);
}

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

.page-about .about-timeline__panel summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
  border-radius: 4px;
}

.page-about .tl-toggle {
  flex: none;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(46, 214, 198, 0.5);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--cyan);
  transition: transform 0.28s var(--ease), background 0.28s var(--ease);
}

.page-about .about-timeline__panel[open] .tl-toggle {
  transform: rotate(45deg);
  background: rgba(46, 214, 198, 0.14);
}

.page-about .about-timeline__body {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.78;
}

.page-about .about-timeline__body p {
  margin: 0;
}

@media (min-width: 760px) {
  .page-about .about-timeline {
    gap: 18px;
  }

  .page-about .about-timeline::before {
    content: "";
    position: absolute;
    left: 95px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, rgba(179, 106, 76, 0.85), rgba(179, 106, 76, 0.1));
  }

  .page-about .about-timeline__item {
    grid-template-columns: 96px minmax(0, 1fr);
    column-gap: 30px;
    align-items: start;
  }

  .page-about .about-timeline__year {
    justify-self: end;
    padding-top: 12px;
    padding-right: 4px;
  }

  .page-about .about-timeline__item::after {
    content: "";
    position: absolute;
    left: 90px;
    top: 20px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--orange);
    box-shadow: 0 0 0 5px rgba(255, 106, 26, 0.14);
  }

  .page-about .about-timeline__panel {
    padding: 20px 24px;
  }
}

/* ---------- 服务网络 ---------- */
.page-about .about-network {
  padding-block: clamp(36px, 6vw, 80px);
}

.page-about .about-network__band {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 24px;
  padding: clamp(22px, 4vw, 44px);
  border-radius: 40px 6px 40px 6px;
  background: linear-gradient(150deg, rgba(94, 107, 79, 0.9), rgba(18, 43, 68, 0.96) 72%);
  border: 1px solid rgba(94, 107, 79, 0.55);
  box-shadow: var(--shadow);
}

.page-about .about-network__band::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -90px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 214, 198, 0.16), transparent 70%);
  pointer-events: none;
}

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

.page-about .about-network__copy p {
  margin: 0;
  max-width: 56ch;
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.82;
}

.page-about .about-network__cities {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
}

.page-about .about-network__cities li {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 5px 11px;
  color: var(--bone);
  background: rgba(11, 27, 43, 0.42);
  border: 1px solid rgba(244, 239, 230, 0.22);
  border-radius: 999px;
}

.page-about .about-network__figure {
  margin: 0;
  position: relative;
  z-index: 1;
}

.page-about .about-network__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px 28px 4px 28px;
}

.page-about .about-network__stats {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-network__stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  background: rgba(11, 27, 43, 0.55);
  border: 1px solid var(--line);
  border-radius: 3px 16px 3px 16px;
}

.page-about .about-network__stats .num {
  font-family: var(--font-mono);
  font-size: clamp(21px, 2.8vw, 28px);
  line-height: 1.1;
  color: var(--cyan);
}

.page-about .about-network__stats span:last-child {
  font-size: 12.5px;
  color: var(--text-soft);
  line-height: 1.6;
}

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

@media (min-width: 880px) {
  .page-about .about-network__band {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
    gap: 36px;
  }
}

/* ---------- 团队与分工 ---------- */
.page-about .about-team {
  padding-block: clamp(36px, 6vw, 80px);
}

.page-about .about-team__grid {
  display: grid;
  gap: 30px;
}

.page-about .about-team__intro p {
  margin: 0 0 16px;
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.82;
}

.page-about .about-team__figure {
  margin: 22px 0 0;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px 32px 4px 32px;
  filter: saturate(0.9);
}

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

.page-about .role-card {
  position: relative;
  padding: 26px 20px 20px;
  background: rgba(18, 43, 68, 0.82);
  border: 1px solid var(--line);
  border-radius: 28px 6px 28px 6px;
  transition: border-color 0.25s var(--ease), transform 0.3s var(--ease);
}

.page-about .role-card::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  width: 46px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--orange);
}

.page-about .role-card:nth-child(2) {
  border-radius: 6px 28px 6px 28px;
  background: rgba(42, 48, 56, 0.82);
}

.page-about .role-card:nth-child(2)::before {
  background: var(--cyan);
}

.page-about .role-card:nth-child(3) {
  border-radius: 28px 28px 6px 6px;
}

.page-about .role-card:nth-child(3)::before {
  background: var(--moss);
}

.page-about .role-card:nth-child(4) {
  border-radius: 6px 6px 28px 28px;
}

.page-about .role-card:nth-child(4)::before {
  background: var(--clay);
}

.page-about .role-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.page-about .role-card__head {
  margin: 0 0 10px;
}

.page-about .role-card__count {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--white);
}

.page-about .role-card__count small {
  font-size: 12px;
  margin-left: 4px;
  color: var(--text-soft);
}

.page-about .role-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-family: var(--font-display);
  letter-spacing: 0.01em;
  color: var(--bone);
}

.page-about .role-card p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
}

@media (min-width: 620px) {
  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
    gap: 48px;
    align-items: start;
  }
}

/* ---------- 运营节奏 ---------- */
.page-about .about-ops {
  padding-block: clamp(36px, 6vw, 80px);
}

.page-about .about-ops .about-section-head--ops {
  max-width: 720px;
}

.page-about .rhythm {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .rhythm li {
  display: grid;
  gap: 6px;
  padding: 18px 2px;
  border-bottom: 1px solid var(--line);
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.78;
}

.page-about .rhythm li a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .rhythm__when {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--bone);
  display: inline-flex;
  align-items: center;
}

.page-about .rhythm__when::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 9px;
  border-radius: 2px;
  background: var(--clay);
}

@media (min-width: 760px) {
  .page-about .rhythm li {
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: baseline;
    gap: 28px;
    padding: 20px 2px;
  }
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  padding-block: clamp(36px, 6vw, 80px);
}

.page-about .about-eco__grid {
  display: grid;
  gap: 26px;
  padding: clamp(22px, 4vw, 42px);
  border-radius: 6px 40px 6px 40px;
  background: linear-gradient(160deg, rgba(94, 107, 79, 0.24), rgba(11, 27, 43, 0.5));
  border: 1px solid rgba(94, 107, 79, 0.5);
}

.page-about .about-eco__copy p {
  margin: 0 0 14px;
  max-width: 60ch;
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.82;
}

.page-about .about-eco__copy p:last-child {
  margin-bottom: 0;
}

.page-about .about-eco__copy a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .eco {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  align-content: start;
}

.page-about .eco li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  background: rgba(11, 27, 43, 0.5);
  border: 1px solid rgba(94, 107, 79, 0.55);
  border-radius: 3px 16px 3px 16px;
}

.page-about .eco .num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  color: var(--bone);
}

.page-about .eco span:last-child {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-soft);
}

@media (min-width: 880px) {
  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 40px;
    align-items: center;
  }
}

/* ---------- 联系 ---------- */
.page-about .about-contact {
  padding-block: clamp(36px, 6vw, 80px) clamp(44px, 7vw, 96px);
}

.page-about .about-contact__grid {
  display: grid;
  gap: 26px;
  padding: clamp(22px, 4vw, 44px);
  border-radius: 6px 38px 6px 38px;
  background: linear-gradient(155deg, rgba(179, 106, 76, 0.18), rgba(11, 27, 43, 0.42));
  border: 1px solid rgba(179, 106, 76, 0.38);
}

.page-about .about-contact__copy p {
  margin: 0 0 14px;
  max-width: 58ch;
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.82;
}

.page-about .about-contact__copy a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-contact__actions {
  margin-top: 22px;
  gap: 12px;
}

.page-about .contact-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .contact-list > div {
  padding: 14px 16px;
  background: rgba(11, 27, 43, 0.5);
  border: 1px solid var(--line);
  border-radius: 3px 14px 3px 14px;
}

.page-about .contact-list dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--clay);
  margin-bottom: 5px;
}

.page-about .contact-list dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--bone);
  word-break: break-word;
}

@media (min-width: 860px) {
  .page-about .about-contact__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 40px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .role-card,
  .page-about .about-timeline__panel,
  .page-about .tl-toggle {
    transition: none;
  }

  .page-about .role-card:hover {
    transform: none;
  }
}