.page-about {
  --about-pad: 40px;
  background: var(--c-cream);
  color: var(--c-ink);
}

.page-about h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: var(--fs-4);
  line-height: 1.35;
  letter-spacing: -.01em;
}

.page-about h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: var(--fs-3);
  line-height: 1.4;
}

.page-about p {
  margin: 0 0 14px;
  font-family: var(--font-body);
  font-size: var(--fs-3);
  line-height: 1.75;
}

.page-about .about-section {
  padding: var(--about-pad) 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 8px 0 32px;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -22%;
  top: 26%;
  width: 82%;
  height: 96%;
  background: linear-gradient(155deg, var(--c-glow), var(--c-lilac) 74%);
  clip-path: polygon(0 48%, 100% 0, 100% 100%, 0 100%);
  opacity: .42;
  pointer-events: none;
  z-index: 0;
}

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

.page-about .about-hero__title {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: var(--fs-5);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--c-indigo);
  max-width: 16em;
}

.page-about .about-hero__lead {
  max-width: 34em;
  color: var(--c-ink);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 28px;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--c-line);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
  background: var(--c-cream);
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: var(--fs-4);
  font-weight: 600;
  color: var(--c-purple);
  line-height: 1;
}

.page-about .about-stat__label {
  font-size: var(--fs-2);
  color: var(--c-muted);
  line-height: 1.5;
}

.page-about .about-figure {
  margin: 0 auto;
  padding-bottom: 8px;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-lilac);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .04em;
  color: var(--c-muted);
}

/* ---------- 为什么 ---------- */
.page-about .about-why {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-about .about-why__copy p {
  max-width: 34em;
  color: var(--c-ink);
}

.page-about .about-why__note {
  padding: 20px 18px;
  background: var(--c-lilac);
  border-left: 3px solid var(--c-orange);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-about .about-why__note-title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .12em;
  color: var(--c-muted);
}

.page-about .about-why__note-num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-5);
  font-weight: 600;
  line-height: 1;
  color: var(--c-purple);
}

.page-about .about-why__note p:last-child {
  margin: 0;
  font-size: var(--fs-2);
  color: var(--c-muted);
}

/* ---------- 分类色带 ---------- */
.page-about .about-band {
  position: relative;
  overflow: hidden;
  padding: 40px 0;
  background: linear-gradient(128deg, var(--c-indigo) 0%, var(--c-purple) 100%);
  color: var(--c-cream);
}

.page-about .about-band__note {
  display: none;
}

.page-about .about-band__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: center;
}

.page-about .about-band__text h2 {
  color: var(--c-cream);
  max-width: 18em;
}

.page-about .about-band__text p {
  color: rgba(251, 246, 238, .86);
  max-width: 36em;
}

.page-about .about-eyebrow--dark {
  color: var(--c-glow);
}

.page-about .about-eyebrow--dark::before {
  background: var(--c-orange);
}

.page-about .about-band__chart {
  text-align: center;
}

.page-about .about-band__hint {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .06em;
  color: rgba(251, 246, 238, .62);
}

.page-about .ring {
  display: block;
  width: 100%;
  max-width: 280px;
  height: auto;
  margin: 0 auto;
}

.page-about .ring__track {
  fill: none;
  stroke: rgba(251, 246, 238, .16);
  stroke-width: 26;
}

.page-about .ring__track--in {
  stroke-width: 14;
}

.page-about .ring__seg {
  fill: none;
  stroke-width: 26;
  transition: stroke-width 200ms var(--ease);
}

.page-about .ring__seg--1 { stroke: #B79BFF; }
.page-about .ring__seg--2 { stroke: #FFFFFF; opacity: .92; }
.page-about .ring__seg--3 { stroke: #FF7A1A; }
.page-about .ring__seg--4 { stroke: #B79BFF; opacity: .6; }
.page-about .ring__seg--5 { stroke: #FFFFFF; opacity: .56; }
.page-about .ring__seg--6 { stroke: #B79BFF; opacity: .82; }

.page-about .ring__seg:hover {
  stroke-width: 32;
}

.page-about .ring__in {
  fill: none;
  stroke: rgba(251, 246, 238, .5);
  stroke-width: 14;
  transition: stroke-width 200ms var(--ease);
}

.page-about .ring__in:hover {
  stroke-width: 20;
}

.page-about .ring__num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 600;
  fill: var(--c-cream);
}

.page-about .ring__unit {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: .18em;
  fill: rgba(251, 246, 238, .72);
}

/* ---------- 分类明细 ---------- */
.page-about .about-classes__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-about .about-classes__col h3 {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--c-line);
}

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

.page-about .zone-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px dashed var(--c-line);
}

.page-about .zone-list li:last-child {
  border-bottom: 0;
}

.page-about .zone-list__num {
  flex: 0 0 auto;
  min-width: 34px;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .08em;
  color: var(--c-orange);
}

.page-about .zone-list__body {
  font-size: var(--fs-2);
  line-height: 1.7;
  color: var(--c-muted);
}

.page-about .zone-list__body strong {
  display: block;
  margin-bottom: 2px;
  font-size: var(--fs-3);
  font-weight: 600;
  color: var(--c-ink);
}

/* ---------- 时间轴 ---------- */
.page-about .about-history__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 20px;
}

.page-about .timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: var(--c-line);
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 17px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--c-glow);
  border: 2px solid var(--c-cream);
  box-shadow: 0 0 0 1px var(--c-line);
}

.page-about .timeline__item:nth-child(2)::before {
  background: var(--c-purple);
  opacity: .55;
}

.page-about .timeline__item:nth-child(3)::before {
  background: var(--c-purple);
  opacity: 1;
}

.page-about .timeline__summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-about .timeline__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-3);
  color: var(--c-muted);
}

.page-about .timeline__node[open] .timeline__summary::after {
  content: "−";
  color: var(--c-purple);
}

.page-about .timeline__year {
  font-family: var(--font-mono);
  font-size: var(--fs-2);
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--c-purple);
}

.page-about .timeline__label {
  font-family: var(--font-display);
  font-size: var(--fs-3);
  font-weight: 600;
  color: var(--c-ink);
}

.page-about .timeline__body {
  padding: 0 0 14px;
}

.page-about .timeline__body p {
  margin: 0;
  max-width: 32em;
  font-size: var(--fs-2);
  line-height: 1.8;
  color: var(--c-muted);
}

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

.page-about .about-history__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 11 / 7;
  object-fit: cover;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-lilac);
}

.page-about .about-history__media figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .04em;
  color: var(--c-muted);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: start;
}

.page-about .about-team__copy p {
  max-width: 34em;
}

.page-about .about-team__facts {
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-about .about-team__fact {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-team__fact dt {
  flex: 0 0 56px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .1em;
  color: var(--c-orange);
}

.page-about .about-team__fact dd {
  margin: 0;
  font-size: var(--fs-2);
  line-height: 1.7;
  color: var(--c-ink);
}

.page-about .about-team__media {
  margin: 0;
  padding: 10px;
  background: var(--c-lilac);
  border-radius: var(--radius);
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: calc(var(--radius) - 4px);
}

.page-about .about-team__media figcaption {
  padding: 10px 4px 2px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .04em;
  color: var(--c-muted);
}

/* ---------- 接下来 ---------- */
.page-about .about-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 20px;
}

.page-about .next-card {
  display: flex;
  flex-direction: column;
  padding: 20px 18px;
  background: var(--c-cream);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color 160ms var(--ease);
}

.page-about .next-card:hover {
  border-color: var(--c-purple);
}

.page-about .next-card h3 {
  margin-bottom: 8px;
  font-size: var(--fs-3);
  color: var(--c-indigo);
}

.page-about .next-card p {
  margin: 0 0 16px;
  font-size: var(--fs-2);
  line-height: 1.75;
  color: var(--c-muted);
}

.page-about .next-card__link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .08em;
  color: var(--c-purple);
  text-decoration: none;
  border-bottom: 2px solid var(--c-orange);
  padding-bottom: 2px;
}

.page-about .next-card__link:hover {
  color: var(--c-indigo);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding: 34px 0;
  background: var(--c-lilac);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-cta__inner {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: flex-start;
}

.page-about .about-cta__copy h2 {
  margin-bottom: 8px;
  font-size: var(--fs-4);
  color: var(--c-indigo);
}

.page-about .about-cta__copy p {
  margin: 0;
  max-width: 36em;
  font-size: var(--fs-2);
  line-height: 1.75;
  color: var(--c-muted);
}

@media (min-width: 760px) {
  .page-about {
    --about-pad: 60px;
  }

  .page-about .about-hero__title {
    font-size: var(--fs-6);
  }

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

  .page-about .about-stat {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-about .about-why {
    grid-template-columns: 1.5fr .8fr;
    gap: 34px;
    align-items: start;
  }

  .page-about .about-band {
    padding: 54px 0;
  }

  .page-about .about-band__inner {
    grid-template-columns: 300px 1fr;
    gap: 40px;
  }

  .page-about .about-classes__grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .page-about .about-history__grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1.15fr .85fr;
    gap: 36px;
  }

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

  .page-about .about-cta__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-band__note {
    display: block;
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: var(--fs-1);
    letter-spacing: .24em;
    color: rgba(183, 155, 255, .72);
  }

  .page-about .about-band__inner {
    padding-right: 40px;
  }
}
<<<END>>>