.page-about {
  --about-axis-line: rgba(18, 35, 63, 0.18);
  --about-fade: rgba(244, 231, 207, 0.09);
  background: var(--paper);
  color: var(--ink-blue);
  overflow-x: hidden;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: 1.5rem 2.5rem;
  border-bottom: var(--edge);
  background: linear-gradient(180deg, var(--paper-soft) 0%, var(--paper) 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(18, 35, 63, 0.055) 0 1px, transparent 1px 68px);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.75rem;
  min-width: 0;
}

.page-about .about-hero__main {
  min-width: 0;
}

.page-about .about-hero__title {
  margin: 0.85rem 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2.2rem, 8vw, 5rem);
  line-height: 1.03;
  letter-spacing: -0.035em;
  color: var(--ink-blue);
}

.page-about .about-hero__lead {
  margin: 1.15rem 0 0;
  max-width: 40ch;
  font-size: clamp(0.98rem, 1.6vw, 1.12rem);
  line-height: 1.95;
  color: var(--muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.65rem;
}

.page-about .about-hero__index {
  border: var(--edge);
  background: var(--paper-soft);
  box-shadow: var(--shadow-hard);
  padding: 1.15rem 1.05rem 1rem;
  min-width: 0;
}

.page-about .about-hero__index-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 0.85rem;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .about-hero__index-title .mono {
  background: var(--gold);
  color: var(--ink);
  padding: 0.16rem 0.45rem;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
}

.page-about .about-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.1rem;
}

.page-about .about-index a {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: 0.5rem;
  align-items: baseline;
  padding: 0.55rem 0.35rem;
  color: var(--ink-blue);
  text-decoration: none;
  font-size: 0.94rem;
  border-bottom: 1px solid rgba(18, 35, 63, 0.14);
  transition: background 0.18s ease, color 0.18s ease;
}

.page-about .about-index li:last-child a {
  border-bottom: 0;
}

.page-about .about-index .mono {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--flame);
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  background: var(--ink-blue);
  color: var(--paper);
}

.page-about .about-index a:hover .mono,
.page-about .about-index a:focus-visible .mono {
  color: var(--gold);
}

.page-about .about-hero__pitch {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 1.1rem;
  color: var(--cool);
}

/* ---------- 分区通用 ---------- */
.page-about .about-sec {
  padding-block: clamp(2.4rem, 6vw, 4.5rem);
  border-bottom: var(--edge);
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.page-about .about-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem 1rem;
  align-items: start;
  margin-bottom: clamp(1.5rem, 4vw, 2.4rem);
}

.page-about .about-sec__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.4rem;
  padding: 0.28rem 0.42rem;
  background: var(--ink-blue);
  color: var(--gold);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
}

.page-about .about-sec__headtext {
  min-width: 0;
}

.page-about .about-sec__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.55rem, 4.4vw, 2.55rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ink-blue);
}

.page-about .about-sec__intro {
  margin: 0.7rem 0 0;
  max-width: 54ch;
  font-size: 0.96rem;
  line-height: 1.9;
  color: var(--muted);
}

/* ---------- 01 起源 ---------- */
.page-about .about-origin {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  min-width: 0;
}

.page-about .about-origin__text {
  min-width: 0;
}

.page-about .about-origin__text p {
  margin: 0 0 1.05rem;
  font-size: 0.98rem;
  line-height: 1.95;
  color: var(--ink-blue);
}

.page-about .about-origin__text p:last-of-type {
  margin-bottom: 0;
}

.page-about .about-note {
  margin-top: 1.4rem;
  padding: 0.85rem 1rem;
  border-left: 4px solid var(--gold);
  background: var(--paper-2);
  display: grid;
  gap: 0.35rem;
}

.page-about .about-note__label {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--flame);
}

.page-about .about-note p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--ink-blue);
}

.page-about .about-origin__figure {
  margin: 0;
  min-width: 0;
}

.page-about .about-origin__figure .media-frame {
  border: var(--edge);
  box-shadow: var(--shadow-hard);
  background: var(--paper-2);
  overflow: hidden;
  aspect-ratio: 14 / 9;
}

.page-about .about-origin__figure .media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-origin__caption,
.page-about .about-seasons__figure figcaption,
.page-about .about-review__figure figcaption {
  margin-top: 0.75rem;
  padding-left: 0.65rem;
  border-left: 3px solid var(--cool);
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 02 四道工序 ---------- */
.page-about .about-review {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.6rem);
  min-width: 0;
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
  min-width: 0;
}

.page-about .about-step {
  border: var(--edge);
  background: var(--paper-soft);
  padding: 1rem 1.05rem 1.15rem;
  box-shadow: var(--shadow-soft);
}

.page-about .about-step__num {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--flame);
  margin-bottom: 0.3rem;
}

.page-about .about-step__title {
  margin: 0 0 0.4rem;
  font-size: 1.08rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ink-blue);
}

.page-about .about-step__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-about .about-review__figure {
  margin: 0;
  min-width: 0;
}

.page-about .about-review__figure .media-frame {
  border: var(--edge);
  box-shadow: var(--shadow-hard);
  background: var(--paper-2);
  overflow: hidden;
  aspect-ratio: 3 / 2;
}

.page-about .about-review__figure .media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 03 赛季时间线 ---------- */
.page-about .about-seasons__figure {
  margin: 0 0 clamp(1.6rem, 4vw, 2.6rem);
}

.page-about .about-seasons__figure .media-frame {
  border: var(--edge);
  box-shadow: var(--shadow-hard);
  background: var(--paper-2);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.page-about .about-seasons__figure .media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  min-width: 0;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr);
  gap: 0.9rem;
  padding-bottom: 1.35rem;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: calc(1.6rem - 1.5px);
  top: 2.6rem;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--gold), rgba(217, 164, 65, 0.2));
}

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

.page-about .about-timeline__item:last-child::before {
  display: none;
}

.page-about .about-timeline__marker {
  position: relative;
  z-index: 1;
  justify-self: center;
  align-self: start;
  width: 2.4rem;
  height: 2.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink-blue);
  color: var(--gold);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  box-shadow: 0 0 0 3px var(--paper);
}

.page-about .about-timeline__card {
  border: var(--edge);
  background: var(--paper-soft);
  padding: 0.95rem 1rem 1.1rem;
  box-shadow: var(--shadow-soft);
  min-width: 0;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.page-about .about-timeline__card:hover,
.page-about .about-timeline__card:focus-within {
  box-shadow: var(--shadow-hard);
  transform: translate(-2px, -2px);
}

.page-about .about-timeline__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.page-about .about-timeline__meta .mono {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .about-timeline__card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.02rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.35;
  color: var(--ink-blue);
}

.page-about .about-timeline__lead {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ink-blue);
}

.page-about .about-timeline__more {
  margin: 0.6rem 0 0;
  padding-left: 0.7rem;
  border-left: 3px solid rgba(217, 164, 65, 0.55);
  font-size: 0.85rem;
  line-height: 1.78;
  color: var(--muted);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-about .about-timeline__card:hover .about-timeline__more,
.page-about .about-timeline__card:focus-within .about-timeline__more {
  border-color: var(--flame);
  color: var(--ink-blue);
}

/* ---------- 04 团队 ---------- */
.page-about .about-sec--team {
  background: var(--ink-blue);
  color: var(--paper);
  border-bottom: var(--edge);
}

.page-about .about-sec--team .about-sec__num {
  background: var(--gold);
  color: var(--ink);
}

.page-about .about-sec--team .about-sec__title {
  color: var(--paper);
}

.page-about .about-sec--team .about-sec__intro {
  color: rgba(244, 231, 207, 0.76);
}

.page-about .about-roles {
  display: grid;
  gap: 1rem;
  min-width: 0;
}

.page-about .about-role {
  border: var(--edge);
  background: var(--paper);
  color: var(--ink-blue);
  box-shadow: 6px 6px 0 var(--gold);
  min-width: 0;
}

.page-about .about-role__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.7rem;
  padding: 0.85rem 0.95rem;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-role__num {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--ink-blue);
}

.page-about .about-role__name {
  font-size: 0.94rem;
  font-weight: 900;
  line-height: 1.4;
  color: var(--ink-blue);
}

.page-about .about-role__cue {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--flame);
  border: 2px solid var(--flame);
  padding: 0.12rem 0.38rem;
  white-space: nowrap;
  transition: background 0.18s ease, color 0.18s ease;
}

.page-about .about-role__head:hover .about-role__cue,
.page-about .about-role[open] .about-role__cue {
  background: var(--flame);
  color: var(--paper);
}

.page-about .about-role__text {
  margin: 0;
  padding: 0.75rem 0.95rem 1rem;
  border-top: 1px dashed rgba(18, 35, 63, 0.3);
  font-size: 0.87rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-about .about-team__note {
  margin: 1.5rem 0 0;
  padding: 0.85rem 1rem;
  border-left: 4px solid var(--gold);
  background: var(--about-fade);
  color: rgba(244, 231, 207, 0.92);
  font-size: 0.9rem;
  line-height: 1.8;
}

/* ---------- 05 使用方 ---------- */
.page-about .about-audience {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
  min-width: 0;
}

.page-about .about-audience__item {
  border-top: 3px solid var(--ink-blue);
  background: var(--paper-soft);
  padding: 0.9rem 1rem 1.05rem;
  min-width: 0;
}

.page-about .about-audience__num {
  display: block;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--flame);
  margin-bottom: 0.4rem;
}

.page-about .about-audience__title {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ink-blue);
}

.page-about .about-audience__text {
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.82;
  color: var(--muted);
}

/* ---------- 06 长期合作 ---------- */
.page-about .about-partner {
  display: grid;
  gap: 1rem;
  min-width: 0;
}

.page-about .about-partner__item {
  border: var(--edge);
  background: var(--paper-soft);
  padding: 1.05rem 1.05rem 1.15rem;
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: 0.5rem;
  align-content: start;
  min-width: 0;
}

.page-about .about-partner__item .tag {
  justify-self: start;
}

.page-about .about-partner__item h3 {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.38;
  color: var(--ink-blue);
}

.page-about .about-partner__item p {
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-about .about-cta {
  margin-top: clamp(1.6rem, 4vw, 2.6rem);
  border: var(--edge);
  background: var(--gold);
  color: var(--ink);
  padding: clamp(1.2rem, 3vw, 1.9rem);
  box-shadow: var(--shadow-hard);
  display: grid;
  gap: 0.85rem;
}

.page-about .about-cta__kicker {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--ink-blue);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 26ch;
  font-size: clamp(1.15rem, 3vw, 1.6rem);
  font-weight: 900;
  line-height: 1.32;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.page-about .about-cta__links {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.86rem;
}

.page-about .about-cta__links a {
  color: var(--ink-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-cta__links a:hover,
.page-about .about-cta__links a:focus-visible {
  color: var(--ink);
  background: var(--paper-soft);
}

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

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

@media (min-width: 760px) {
  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .about-roles .about-role:nth-child(even) {
    margin-top: 1.1rem;
  }

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

  .page-about .about-partner__item:nth-child(2) {
    margin-top: 1.2rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-block: 2.25rem 3.25rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-about .about-hero__index {
    transform: translateY(1.25rem);
  }

  .page-about .about-origin {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
    gap: clamp(2rem, 5vw, 3.5rem);
  }

  .page-about .about-origin__figure {
    margin-top: 2.25rem;
  }

  .page-about .about-review {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-about .about-review__figure {
    margin-top: 1.75rem;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 6rem minmax(0, 1fr);
    gap: 1.25rem;
    padding-bottom: 1.7rem;
  }

  .page-about .about-timeline__item::before {
    left: calc(3rem - 1.5px);
    top: 3rem;
  }

  .page-about .about-timeline__marker {
    width: 2.8rem;
    height: 2.8rem;
    font-size: 0.8rem;
  }

  .page-about .about-timeline__item:nth-child(odd) .about-timeline__card {
    margin-right: clamp(0.75rem, 3vw, 3rem);
  }

  .page-about .about-timeline__item:nth-child(even) .about-timeline__card {
    margin-left: clamp(0.75rem, 3vw, 3rem);
  }
}

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__card,
  .page-about .about-timeline__more,
  .page-about .about-role__cue,
  .page-about .about-index a {
    transition: none;
  }

  .page-about .about-timeline__card:hover,
  .page-about .about-timeline__card:focus-within {
    transform: none;
  }

  .page-about .about-hero__index {
    transform: none;
  }
}
<<<END>>>