.page-about {
  --about-axis: rgba(22, 225, 232, .34);
  --about-card: rgba(36, 21, 66, .72);
  --about-dim: rgba(243, 239, 228, .66);
  --about-shadow: 0 1px 0 rgba(243, 239, 228, .1), 0 18px 40px rgba(14, 16, 48, .55);
  padding-bottom: 0;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: 1.4rem;
  padding-bottom: .4rem;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 1.6rem 0 3.4rem;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(22, 225, 232, .16), transparent 58%),
    radial-gradient(90% 70% at 6% 100%, rgba(255, 122, 41, .14), transparent 60%);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto -10% 0 auto;
  width: 320px;
  height: 320px;
  background-image: repeating-linear-gradient(135deg, rgba(22, 225, 232, .12) 0 2px, transparent 2px 9px);
  transform: rotate(-6deg);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2.2rem;
}

.page-about .about-hero__title {
  margin: .8rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.05rem, 7.4vw, 4.1rem);
  line-height: 1.16;
  letter-spacing: .01em;
  color: var(--c-paper);
  text-shadow: 4px 5px 0 rgba(22, 225, 232, .3);
}

.page-about .about-hero__intro {
  margin: 1.1rem 0 0;
  max-width: 38em;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--about-dim);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.7rem;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__stats li {
  padding: .95rem 1rem;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--c-cyan);
  border-radius: var(--radius);
  background: var(--about-card);
  box-shadow: var(--about-shadow);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.75rem;
  line-height: 1.1;
  color: var(--c-yellow);
}

.page-about .about-stat__label {
  display: block;
  margin-top: .3rem;
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--about-dim);
}

/* ---------- 01 赛季长卷 ---------- */
.page-about .about-chronicle__head,
.page-about .about-team__head,
.page-about .about-standard__head,
.page-about .about-cadence__head,
.page-about .about-feedback__head {
  max-width: 46rem;
  margin-bottom: 2rem;
}

.page-about .about-chronicle__head h2,
.page-about .about-team__head h2,
.page-about .about-standard__head h2,
.page-about .about-cadence__head h2,
.page-about .about-feedback__head h2 {
  margin: 1rem 0 .8rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.55rem, 5vw, 2.5rem);
  line-height: 1.24;
  color: var(--c-paper);
}

.page-about .about-chronicle__head p,
.page-about .about-team__head p,
.page-about .about-standard__head p,
.page-about .about-cadence__head p,
.page-about .about-feedback__head p {
  margin: 0;
  font-size: .98rem;
  line-height: 1.85;
  color: var(--about-dim);
}

.page-about .about-chronicle__split {
  display: grid;
  gap: 2rem;
}

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

.page-about .about-chronicle__caption {
  margin: .75rem 0 0;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--c-mist);
}

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

/* ---------- 赛季时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 1.15rem;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: .6rem;
  bottom: .6rem;
  left: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--c-cyan), rgba(22, 225, 232, .08));
}

.page-about .season-node {
  position: relative;
  margin-bottom: .8rem;
}

.page-about .season-node::before {
  content: "";
  position: absolute;
  top: 1.15rem;
  left: -1.15rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-ink);
  border: 2px solid var(--c-cyan);
  transform: translateX(-50%);
}

.page-about .season-node--current::before {
  background: var(--c-orange);
  border-color: var(--c-yellow);
}

.page-about .season-node details {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--about-card);
  box-shadow: var(--about-shadow);
  overflow: hidden;
  transition: border-color .25s var(--ease);
}

.page-about .season-node details[open] {
  border-color: var(--line-cyan);
}

.page-about .season-node summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: .7rem;
  padding: .85rem 1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-about .season-node__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .92rem;
  padding: .18rem .5rem;
  border-radius: 6px;
  color: var(--c-ink);
  background: var(--c-cyan);
}

.page-about .season-node--current .season-node__num {
  background: var(--c-orange);
  color: var(--c-paper);
}

.page-about .season-node__title {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: .96rem;
  line-height: 1.5;
  color: var(--c-paper);
}

.page-about .season-node__cue {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--c-mist);
}

.page-about .season-node details[open] .season-node__cue {
  color: var(--c-yellow);
}

.page-about .season-node__body {
  padding: 0 1rem 1rem;
}

.page-about .season-node__body p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--about-dim);
}

.page-about .season-node__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: .75rem !important;
}

/* ---------- 七段色带信息图 ---------- */
.page-about .about-chronicle-map {
  padding: 3rem 0;
  background: linear-gradient(180deg, rgba(14, 16, 48, .9), rgba(36, 21, 66, .55));
}

.page-about .about-chronicle-map__title {
  margin: 0 0 1.4rem;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.15rem, 3.6vw, 1.5rem);
  letter-spacing: .02em;
  color: var(--c-paper);
}

.page-about .about-chronicle-map__rail {
  display: flex;
  gap: .5rem;
  margin-bottom: 1.8rem;
  padding-bottom: .6rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .map-seg {
  flex: 0 0 auto;
  min-width: 5.2rem;
  padding: .7rem .6rem;
  border-radius: 10px;
  text-align: center;
  border: 1px solid var(--line-soft);
  background: rgba(243, 239, 228, .05);
  transition: transform .25s var(--ease), background .25s var(--ease);
}

.page-about .map-seg:hover {
  transform: translateY(-4px);
  background: rgba(22, 225, 232, .14);
}

.page-about .map-seg__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .86rem;
  color: var(--c-yellow);
}

.page-about .map-seg__word {
  display: block;
  margin-top: .25rem;
  font-size: .76rem;
  letter-spacing: .04em;
  color: var(--about-dim);
}

.page-about .map-seg--1 { border-top: 3px solid var(--c-cyan); }
.page-about .map-seg--2 { border-top: 3px solid var(--c-orange); }
.page-about .map-seg--3 { border-top: 3px solid var(--c-yellow); }
.page-about .map-seg--4 { border-top: 3px solid var(--c-mint); }
.page-about .map-seg--5 { border-top: 3px solid var(--c-magenta); }
.page-about .map-seg--6 { border-top: 3px solid var(--c-cyan); }
.page-about .map-seg--7 { border-top: 3px solid var(--c-orange); }

/* ---------- 02 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: 1rem;
}

.page-about .about-team__card {
  position: relative;
  padding: 1.4rem 1.2rem 1.2rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--about-card);
  box-shadow: var(--about-shadow);
  overflow: hidden;
}

.page-about .about-team__card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 74px;
  height: 74px;
  background: linear-gradient(135deg, transparent 50%, rgba(255, 122, 41, .22) 50%);
}

.page-about .about-team__count {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 2.4rem;
  line-height: 1;
  color: var(--c-cyan);
  text-shadow: 3px 3px 0 rgba(22, 225, 232, .18);
}

.page-about .about-team__card h3 {
  margin: .65rem 0 .55rem;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 1.16rem;
  color: var(--c-paper);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.82;
  color: var(--about-dim);
}

.page-about .about-team__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin-top: .95rem !important;
}

/* ---------- 03 评测标准 ---------- */
.page-about .about-standard__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .6rem;
}

.page-about .trait {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: .2rem .85rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--c-cyan);
  border-radius: var(--radius);
  background: rgba(36, 21, 66, .55);
  cursor: default;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-about .trait:hover,
.page-about .trait:focus-visible {
  border-left-color: var(--c-orange);
  background: rgba(36, 21, 66, .9);
  outline: none;
}

.page-about .trait__index {
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--c-yellow);
}

.page-about .trait__label {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--c-paper);
}

.page-about .trait__note {
  grid-column: 2;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--c-mist);
  transition: max-height .35s var(--ease), opacity .3s var(--ease), margin .3s var(--ease);
}

.page-about .trait:hover .trait__note,
.page-about .trait:focus-visible .trait__note,
.page-about .trait:focus-within .trait__note {
  max-height: 8rem;
  opacity: 1;
  margin-top: .45rem;
}

.page-about .about-standard__note {
  margin: 1.4rem 0 0;
  padding: .9rem 1.1rem;
  border-radius: var(--radius);
  border: 1px dashed var(--line-cyan);
  font-size: .9rem;
  line-height: 1.8;
  color: var(--about-dim);
}

/* ---------- 04 协作生态 ---------- */
.page-about .about-eco {
  padding: 3rem 0;
  background: linear-gradient(120deg, rgba(36, 21, 66, .78), rgba(14, 16, 48, .92));
}

.page-about .about-eco__inner {
  display: grid;
  gap: 1.9rem;
}

.page-about .about-eco__text h2 {
  margin: 1rem 0 .9rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.8vw, 2.3rem);
  line-height: 1.26;
  color: var(--c-paper);
}

.page-about .about-eco__text p {
  margin: 0 0 1rem;
  max-width: 36em;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--about-dim);
}

.page-about .about-eco__links {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1.4rem !important;
}

.page-about .about-eco__media {
  order: -1;
}

/* ---------- 05 更新节奏 ---------- */
.page-about .about-cadence__grid {
  display: grid;
  gap: .9rem;
}

.page-about .cadence-card {
  padding: 1.25rem 1.15rem;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: rgba(243, 239, 228, .045);
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.page-about .cadence-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-cyan);
}

.page-about .cadence-card__freq {
  display: inline-block;
  padding: .22rem .6rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--c-ink);
  background: var(--c-yellow);
}

.page-about .cadence-card h3 {
  margin: .8rem 0 .5rem;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 1.08rem;
  color: var(--c-paper);
}

.page-about .cadence-card p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--about-dim);
}

.page-about .cadence-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: .9rem !important;
}

/* ---------- 06 反馈 ---------- */
.page-about .about-feedback__grid {
  display: grid;
  gap: 1.2rem;
}

.page-about .about-feedback__col {
  padding: 1.3rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: var(--about-card);
  box-shadow: var(--about-shadow);
}

.page-about .about-feedback__col h3 {
  margin: 0 0 .8rem;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 1.06rem;
  color: var(--c-cyan);
}

.page-about .about-feedback__col p {
  margin: 0 0 .8rem;
  font-size: .92rem;
  line-height: 1.82;
  color: var(--about-dim);
}

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

.page-about .about-feedback__list {
  margin: 0 0 .9rem;
  padding: 0;
  list-style: none;
}

.page-about .about-feedback__list li {
  position: relative;
  padding-left: 1.15rem;
  margin-bottom: .55rem;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--about-dim);
}

.page-about .about-feedback__list li::before {
  content: "";
  position: absolute;
  top: .72rem;
  left: 0;
  width: 7px;
  height: 7px;
  background: var(--c-orange);
  transform: rotate(45deg);
}

.page-about .about-feedback__hint {
  padding-top: .7rem;
  border-top: 1px dashed var(--line-cyan);
  color: var(--c-mist) !important;
}

.page-about .about-feedback__hint strong {
  color: var(--c-yellow);
  font-weight: 700;
}

.page-about .about-feedback__cta {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1.6rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

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

  .page-about .about-standard__list .trait:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 3rem 0 4.6rem;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
    gap: 3.4rem;
  }

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

  .page-about .about-chronicle__split {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.35fr);
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-chronicle__media {
    position: sticky;
    top: 6.5rem;
  }

  .page-about .about-chronicle__head {
    max-width: 52rem;
  }

  .page-about .about-eco__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
    gap: 3rem;
  }

  .page-about .about-eco__media {
    order: 0;
  }

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

  .page-about .about-standard__list .trait:last-child {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .map-seg,
  .page-about .cadence-card,
  .page-about .trait,
  .page-about .season-node details {
    transition: none;
  }
}
<<<END>>>