.page-about {
  --about-band-pad: clamp(52px, 8vw, 104px);
  background: var(--mist);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding-block: clamp(16px, 3vw, 26px);
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
}

.page-about .about-crumb-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-about .about-crumb-item + .about-crumb-item::before {
  content: "/";
  font-family: var(--font-mono);
  color: var(--line-strong);
}

.page-about .breadcrumb-link {
  color: var(--ink-soft);
  text-decoration: none;
}

.page-about .breadcrumb-link:hover,
.page-about .breadcrumb-link:focus-visible {
  color: var(--signal);
}

.page-about .breadcrumb-current {
  color: var(--rock);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(38px, 6vw, 76px) clamp(52px, 8vw, 104px);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  background:
    radial-gradient(120% 130% at 92% -20%, rgba(127, 216, 212, 0.22), transparent 62%),
    radial-gradient(100% 120% at -8% 4%, rgba(255, 106, 43, 0.18), transparent 58%),
    var(--night);
  color: var(--on-dark-strong);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 54px);
  align-items: end;
}

.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mint);
}

.page-about .about-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--signal);
}

.page-about h1 {
  margin: 0 0 20px;
  font-size: clamp(1.85rem, 4.4vw, 3.3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--on-dark-strong);
  max-width: 20ch;
}

.page-about .about-lede {
  margin: 0 0 28px;
  max-width: 62ch;
  font-size: clamp(0.98rem, 1.4vw, 1.1rem);
  line-height: 1.9;
  color: var(--on-dark);
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-btn-on-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.72em 1.45em;
  border: 1px solid rgba(244, 247, 248, 0.42);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--on-dark-strong);
  font-size: 0.94rem;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.28s var(--ease), color 0.28s var(--ease);
}

.page-about .about-btn-on-dark:hover,
.page-about .about-btn-on-dark:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  border: 1px solid rgba(127, 216, 212, 0.2);
  border-radius: var(--radius-md);
  background: rgba(244, 247, 248, 0.06);
}

.page-about .about-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(1.55rem, 3.4vw, 2.15rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--mint);
}

.page-about .about-stat:first-child .about-stat-num {
  color: var(--signal);
}

.page-about .about-stat-label {
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--on-dark);
}

/* ---------- 画板基座 ---------- */
.page-about .about-band {
  padding-block: var(--about-band-pad);
}

.page-about .about-band--mist {
  background: var(--mist);
}

.page-about .about-band--cream {
  background: var(--cream);
}

.page-about .about-band--mint {
  background: rgba(127, 216, 212, 0.16);
}

.page-about .about-band--dark {
  background: var(--night);
  color: var(--on-dark-strong);
}

.page-about .about-band--dark h2,
.page-about .about-band--dark h3 {
  color: var(--on-dark-strong);
}

.page-about h2 {
  margin: 0 0 14px;
  font-size: clamp(1.42rem, 2.6vw, 2.05rem);
  line-height: 1.24;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--ink);
}

.page-about h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4.4vw, 3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--clay);
}

.page-about .about-num--mint {
  color: var(--mint);
}

.page-about .about-num--signal {
  color: var(--signal);
}

.page-about .about-text {
  margin: 0 0 1em;
  max-width: 72ch;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-about .about-text--dark {
  color: var(--on-dark);
}

.page-about .about-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-about .about-head-text {
  margin: 0;
  max-width: 68ch;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .about-band--dark .about-head-text {
  color: var(--on-dark);
}

/* ---------- 01 起源 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 48px);
}

.page-about .about-split-body {
  padding-top: 4px;
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-facts li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 18px;
  border-left: 3px solid var(--moss);
  border-radius: var(--radius-sm);
  background: rgba(95, 122, 97, 0.09);
}

.page-about .about-facts-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--navy);
}

.page-about .about-facts-label {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ---------- 02 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
}

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

.page-about .about-role {
  padding: 20px 18px;
  border: 1px solid rgba(127, 216, 212, 0.18);
  border-left-width: 3px;
  border-radius: var(--radius-lg);
  background: rgba(244, 247, 248, 0.05);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .about-role:nth-child(1) { border-left-color: var(--signal); }
.page-about .about-role:nth-child(2) { border-left-color: var(--mint); }
.page-about .about-role:nth-child(3) { border-left-color: var(--clay); }
.page-about .about-role:nth-child(4) { border-left-color: var(--moss); }

.page-about .about-role:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 106, 43, 0.45);
}

.page-about .about-role-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.page-about .about-role-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--on-dark-strong);
}

.page-about .about-role-count {
  font-family: var(--font-mono);
  font-size: 0.98rem;
  color: var(--mint);
}

.page-about .about-role-count em {
  margin-left: 2px;
  font-style: normal;
  font-size: 0.76rem;
  color: var(--on-dark);
}

.page-about .about-role p {
  margin: 10px 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--on-dark);
}

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

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

.page-about .about-figure figcaption {
  margin-top: 12px;
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--on-dark);
}

.page-about .about-figure--tight img {
  box-shadow: var(--shadow-card);
}

.page-about .about-figure--tight figcaption {
  color: var(--ink-mute);
}

/* ---------- 03 方法 ---------- */
.page-about .about-flow {
  counter-reset: about-flow;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow li {
  counter-increment: about-flow;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #ffffff;
  box-shadow: var(--shadow-card);
}

.page-about .about-flow li::before {
  content: "0" counter(about-flow);
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--clay);
}

.page-about .about-flow li p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ink-mute);
}

/* ---------- 04 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--signal), var(--mint) 48%, var(--clay));
}

.page-about .about-tl-item {
  position: relative;
}

.page-about .about-tl-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 7px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(255, 106, 43, 0.16);
}

.page-about .about-tl-year {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: var(--clay);
}

.page-about .about-tl-item h3 {
  margin-bottom: 6px;
}

.page-about .about-tl-item p {
  margin: 0;
  max-width: 66ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-timeline-figure {
  margin: clamp(28px, 5vw, 48px) 0 0;
}

.page-about .about-timeline-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  object-fit: cover;
}

/* ---------- 05 质量 ---------- */
.page-about .about-quality {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-about .about-checks {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-checks li {
  padding: 14px 16px;
  border-left: 3px solid var(--moss);
  border-radius: var(--radius-sm);
  background: rgba(95, 122, 97, 0.09);
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-about .about-checks strong {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.04em;
  color: var(--navy);
}

/* ---------- 06 生态 ---------- */
.page-about .about-eco {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-eco-card {
  padding: 24px 20px;
  border: 1px solid rgba(11, 42, 74, 0.1);
  border-radius: var(--radius-lg);
  background: rgba(244, 247, 248, 0.72);
}

.page-about .about-eco-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.1rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1;
  color: var(--navy);
}

.page-about .about-eco-label {
  display: block;
  margin-top: 6px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--clay);
}

.page-about .about-eco-card p {
  margin: 12px 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-awards {
  margin-top: clamp(24px, 4vw, 40px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--line-strong);
}

.page-about .about-awards-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
}

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

.page-about .about-award-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(244, 247, 248, 0.7);
  transition: background 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .about-award-list li:hover {
  transform: translateX(3px);
  background: rgba(244, 247, 248, 0.95);
}

.page-about .about-award-note {
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 07 联系 ---------- */
.page-about .about-cta-band {
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.page-about .about-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

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

.page-about .about-contact li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(127, 216, 212, 0.18);
}

.page-about .about-contact li:first-child {
  padding-top: 0;
}

.page-about .about-contact-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--mint);
}

.page-about .about-contact-value {
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--on-dark-strong);
  word-break: break-word;
}

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

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

  .page-about .about-facts li {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .page-about .about-contact li {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 760px) {
  .page-about .about-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

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

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

  .page-about .about-head {
    grid-template-columns: 130px minmax(0, 1fr);
    column-gap: clamp(20px, 4vw, 48px);
    align-items: start;
  }

  .page-about .about-num {
    margin-bottom: 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 60px);
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.45fr);
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-about .about-quality {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: clamp(32px, 5vw, 64px);
  }
}

@media (min-width: 1024px) {
  .page-about .about-timeline {
    padding-left: 34px;
    gap: 28px;
  }

  .page-about .about-timeline::before {
    left: 6px;
  }

  .page-about .about-tl-item::before {
    left: -33px;
    width: 12px;
    height: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-award-list li,
  .page-about .about-btn-on-dark {
    transition: none;
  }

  .page-about .about-role:hover,
  .page-about .about-award-list li:hover {
    transform: none;
  }
}
<<<END>>>