.page-about {
  background: var(--mist);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
}

/* ---------- 掩头 ---------- */
.page-about .about-masthead {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(1.75rem, 5vw, 3.25rem) 0 0;
  color: var(--paper);
  background:
    radial-gradient(115% 85% at 84% 6%, rgba(0, 229, 255, 0.18) 0%, rgba(0, 229, 255, 0) 58%),
    linear-gradient(158deg, var(--sky-deep) 0%, #103252 56%, #1d5487 100%);
}

.page-about .about-masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 96px 96px;
}

.page-about .about-masthead::after {
  content: "";
  position: absolute;
  right: -12%;
  top: 20%;
  width: 58%;
  height: 1px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.75), transparent);
  transform: rotate(-17deg);
}

.page-about .about-masthead__inner {
  position: relative;
  padding-bottom: clamp(1.75rem, 5vw, 3rem);
}

.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.page-about .breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.6);
}

.page-about .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: rgba(255, 255, 255, 0.3);
}

.page-about .breadcrumb__item a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}

.page-about .breadcrumb__item a:hover {
  color: var(--electric);
  border-bottom-color: var(--electric);
}

.page-about .about-eyebrow {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--banner-orange);
}

.page-about .about-eyebrow--dark {
  color: var(--tibet-red);
}

.page-about .about-eyebrow--light {
  color: var(--banner-orange);
}

.page-about .about-masthead__title {
  margin: 0 0 1.1rem;
  max-width: 45rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.75rem, 5.6vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.page-about .about-masthead__lede {
  margin: 0 0 1.9rem;
  max-width: 46rem;
  font-size: clamp(0.95rem, 1.6vw, 1.08rem);
  color: rgba(255, 255, 255, 0.82);
}

.page-about .about-masthead__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.05);
}

.page-about .about-masthead__facts li {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.9rem 0.75rem;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.68);
}

.page-about .about-masthead__facts li:last-child {
  border-right: 0;
}

.page-about .about-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(0.98rem, 3.2vw, 1.55rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-bands {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  height: 4px;
}

.page-about .about-bands span:nth-child(1) { background: var(--sky); }
.page-about .about-bands span:nth-child(2) { background: var(--tibet-red); }
.page-about .about-bands span:nth-child(3) { background: var(--banner-orange); }
.page-about .about-bands span:nth-child(4) { background: var(--turquoise); }
.page-about .about-bands span:nth-child(5) { background: var(--electric); }
.page-about .about-bands span:nth-child(6) { background: var(--violet); }

/* ---------- 章节跳转 ---------- */
.page-about .about-jump {
  position: relative;
  z-index: 2;
  background: var(--paper);
  border-bottom: 1px solid var(--grid);
}

.page-about .about-jump__list {
  display: flex;
  gap: 0.4rem;
  margin: 0;
  padding: 0.55rem 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-jump__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-jump__list a {
  display: inline-block;
  white-space: nowrap;
  padding: 0.42rem 0.78rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--sky);
  text-decoration: none;
  border: 1px solid var(--grid);
  transition: background 0.2s var(--ease-out), color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}

.page-about .about-jump__list a:hover {
  border-color: var(--sky);
  color: var(--sky-deep);
}

.page-about .about-jump__list a.is-current {
  background: var(--sky-deep);
  border-color: var(--sky-deep);
  color: var(--paper);
}

/* ---------- 通用区块 ---------- */
.page-about .about-block {
  padding: clamp(2.5rem, 7vw, 5rem) 0;
}

.page-about .about-h2 {
  margin: 0 0 0.9rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.4rem, 3.8vw, 2.3rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--sky-deep);
}

.page-about .about-h2--light {
  color: var(--paper);
}

.page-about .media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--grid);
  background: var(--sky-deep);
}

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

.page-about .media__caption {
  padding: 0.6rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--sky);
  background: var(--paper);
  border-top: 1px solid var(--grid);
}

.page-about .about-note {
  display: none;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.32em;
  color: rgba(42, 111, 176, 0.5);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

/* ---------- 起点与使命 ---------- */
.page-about .about-origin {
  position: relative;
}

.page-about .about-origin__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.page-about .about-origin__copy p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  color: #3c4b5c;
}

.page-about .about-origin__figure {
  box-shadow: 14px 14px 0 rgba(42, 111, 176, 0.08);
}

/* ---------- 发展历程 ---------- */
.page-about .about-head {
  display: grid;
  gap: 0.85rem 2.5rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.25rem);
}

.page-about .about-head__note {
  margin: 0;
  padding-left: 0.9rem;
  font-size: 0.9rem;
  color: #47586a;
  border-left: 2px solid var(--banner-orange);
}

.page-about .about-tl-figure {
  margin-bottom: clamp(1.75rem, 4.5vw, 3rem);
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--sky) 0%, var(--turquoise) 45%, var(--banner-orange) 100%);
  opacity: 0.45;
}

.page-about .about-tl-item {
  position: relative;
  padding: 0 0 2.1rem 3rem;
}

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

.page-about .about-tl-marker {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  background: var(--paper);
  border: 1px solid var(--sky);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--sky);
}

.page-about .about-tl-body {
  padding: clamp(1rem, 2.5vw, 1.4rem);
  background: var(--paper);
  border: 1px solid var(--grid);
  border-top: 3px solid var(--sky);
}

.page-about .about-tl-body h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-tl-body p {
  margin: 0;
  font-size: 0.88rem;
  color: #47586a;
}

.page-about .about-chip {
  display: inline-block;
  margin-bottom: 0.6rem;
  padding: 0.2rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  color: var(--sky);
  border: 1px solid currentColor;
}

.page-about .about-chip--red { color: var(--tibet-red); }
.page-about .about-chip--orange { color: var(--banner-orange); }
.page-about .about-chip--green { color: var(--turquoise); }
.page-about .about-chip--violet { color: var(--violet); }

.page-about [data-reveal] {
  opacity: 1;
}

.page-about [data-reveal][data-revealed] {
  animation: about-rise 0.62s var(--ease-out) both;
}

@keyframes about-rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 团队与协作 ---------- */
.page-about .about-team {
  background: var(--paper);
  border-top: 1px solid var(--grid);
  border-bottom: 1px solid var(--grid);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.page-about .about-team__copy > p {
  margin: 0 0 1.4rem;
  font-size: 0.95rem;
  color: #3c4b5c;
}

.page-about .about-roles {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-about .about-roles li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem 1.1rem;
  background: var(--mist);
}

.page-about .about-roles__num {
  flex: none;
  min-width: 2.4rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.65rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--tibet-red);
}

.page-about .about-roles strong {
  display: block;
  margin-bottom: 0.2rem;
  font-family: var(--font-heading);
  font-size: 0.96rem;
  color: var(--ink);
}

.page-about .about-roles p {
  margin: 0;
  font-size: 0.84rem;
  color: #4a5a6b;
}

/* ---------- 服务覆盖与荣誉 ---------- */
.page-about .about-reach {
  position: relative;
  overflow: hidden;
  padding: clamp(2.75rem, 7vw, 5rem) 0;
  color: var(--paper);
  background:
    radial-gradient(100% 70% at 12% 0%, rgba(0, 229, 255, 0.14) 0%, rgba(0, 229, 255, 0) 60%),
    linear-gradient(165deg, #0b2138 0%, var(--sky-deep) 58%, #12395c 100%);
}

.page-about .about-reach::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 96px 96px;
}

.page-about .about-reach__inner {
  position: relative;
}

.page-about .about-reach__lede {
  margin: 0;
  max-width: 44rem;
  font-size: 0.94rem;
  color: rgba(255, 255, 255, 0.74);
}

.page-about .about-reach__grid {
  display: grid;
  gap: 1px;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: 0;
  list-style: none;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.page-about .about-reach__item {
  padding: 1.2rem 1.1rem;
  background: rgba(10, 32, 55, 0.86);
}

.page-about .about-reach__key {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--turquoise);
}

.page-about .about-reach__val {
  display: block;
  margin-bottom: 0.45rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-reach__item p {
  margin: 0;
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.68);
}

/* ---------- 文化仪式 ---------- */
.page-about .about-ritual__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.page-about .about-ritual__copy p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  color: #3c4b5c;
}

.page-about .about-swatches {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-swatches li {
  display: flex;
  gap: 0.85rem;
  align-items: center;
  padding: 0.7rem 0.85rem;
  background: var(--paper);
  border: 1px solid var(--grid);
}

.page-about .about-sw {
  flex: none;
  width: 32px;
  height: 32px;
}

.page-about .about-sw--sky { background: var(--sky); }
.page-about .about-sw--red { background: var(--tibet-red); }
.page-about .about-sw--orange { background: var(--banner-orange); }
.page-about .about-sw--green { background: var(--turquoise); }
.page-about .about-sw--electric { background: var(--electric); }
.page-about .about-sw--violet { background: var(--violet); }

.page-about .about-swatches strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: var(--ink);
}

.page-about .about-swatches p {
  margin: 0;
  font-size: 0.8rem;
  color: #4a5a6b;
}

/* ---------- 继续了解 ---------- */
.page-about .about-next {
  padding: clamp(2rem, 5vw, 3rem) 0;
  background: var(--paper);
  border-top: 1px solid var(--grid);
}

.page-about .about-next__inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
  justify-content: space-between;
}

.page-about .about-next__lead {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1rem, 2.6vw, 1.25rem);
  letter-spacing: -0.01em;
  color: var(--sky-deep);
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-reach__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-next__inner {
    flex-direction: row;
    align-items: center;
  }
}

@media (min-width: 880px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  }

  .page-about .about-ritual__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

  .page-about .about-head {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-about .about-timeline::before {
    left: 50%;
  }

  .page-about .about-tl-item {
    width: 50%;
    padding: 0 3rem 2.4rem 0;
    text-align: right;
  }

  .page-about .about-tl-item:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 2.4rem 3rem;
    text-align: left;
  }

  .page-about .about-tl-marker {
    left: auto;
    right: -12px;
  }

  .page-about .about-tl-item:nth-child(even) .about-tl-marker {
    left: -12px;
    right: auto;
  }

  .page-about .about-tl-body {
    border-top-width: 2px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-reach__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr) 3.5rem;
  }

  .page-about .about-note {
    display: block;
    grid-column: 3;
    grid-row: 1;
    justify-self: end;
    align-self: start;
  }
}
<<<END>>>