.page-about {
  --ab-line: rgba(42, 27, 20, 0.16);
  --ab-line-soft: rgba(42, 27, 20, 0.09);
  --ab-line-dark: rgba(248, 246, 240, 0.18);
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.6vw, 2.35rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0.5rem 0 0.9rem;
}

.page-about h3 {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  line-height: 1.3;
  margin: 0 0 0.4rem;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.4rem, 4vw, 2.4rem) clamp(2.4rem, 6vw, 4rem);
  color: var(--mist);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(46, 125, 209, 0.34), transparent 62%),
    linear-gradient(180deg, #0b1230 0%, #16204a 58%, #0b1230 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--vblue) 0 20%,
    var(--mist) 20% 40%,
    var(--flame) 40% 60%,
    var(--vgreen) 60% 80%,
    var(--vyellow) 80% 100%
  );
  opacity: 0.9;
}

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: rgba(248, 246, 240, 0.66);
}

.page-about .breadcrumb-link {
  color: rgba(248, 246, 240, 0.82);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease);
}

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

.page-about .breadcrumb-sep {
  opacity: 0.5;
}

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

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.8rem);
  align-items: start;
  margin-top: clamp(1.2rem, 3vw, 2.2rem);
}

.page-about .about-hero__story .display-title {
  color: var(--mist);
  margin: 0.7rem 0 1rem;
  max-width: 22ch;
}

.page-about .about-hero__story .lede {
  max-width: 46ch;
  color: rgba(248, 246, 240, 0.84);
  font-size: clamp(0.98rem, 2.3vw, 1.06rem);
  line-height: 1.75;
  margin: 0;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: clamp(1.3rem, 3vw, 1.9rem);
}

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

.page-about .figure__img {
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--panel);
}

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

.page-about .figure__caption {
  margin-top: 0.7rem;
  font-size: 0.82rem;
  line-height: 1.6;
  color: rgba(248, 246, 240, 0.62);
}

.page-about .about-index {
  list-style: none;
  margin: clamp(1.8rem, 5vw, 3rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ab-line-dark);
  border: 1px solid var(--ab-line-dark);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-index__item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1rem 1rem 1.05rem;
  background: rgba(11, 18, 48, 0.86);
}

.page-about .about-index__item::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  margin-bottom: 0.15rem;
}

.page-about .about-index__item:nth-child(2)::before { background: var(--vblue); }
.page-about .about-index__item:nth-child(3)::before { background: var(--mist); }
.page-about .about-index__item:nth-child(4)::before { background: var(--vgreen); }
.page-about .about-index__item:nth-child(5)::before { background: var(--vyellow); }
.page-about .about-index__item:nth-child(6)::before { background: var(--flame); }

.page-about .about-index__val {
  font-size: clamp(1.1rem, 3.4vw, 1.45rem);
  font-weight: 600;
  color: var(--mist);
  letter-spacing: -0.01em;
}

.page-about .about-index__key {
  font-size: 0.78rem;
  line-height: 1.45;
  color: rgba(248, 246, 240, 0.66);
}

/* ---------- 品牌故事 ---------- */
.page-about .about-origin {
  padding-block: clamp(2.6rem, 7vw, 5rem);
}

.page-about .about-origin .split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 4vw, 2.6rem);
  align-items: start;
}

.page-about .about-origin .prose p {
  margin: 0 0 1rem;
  font-size: clamp(0.96rem, 2.3vw, 1.02rem);
  line-height: 1.8;
  color: rgba(42, 27, 20, 0.86);
}

.page-about .about-note {
  border-top: 3px solid var(--signal);
  padding: 1rem 0 0;
  background: transparent;
}

.page-about .about-note__title {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--flame);
  margin: 0 0 0.5rem;
}

.page-about .about-note__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(42, 27, 20, 0.72);
}

/* ---------- 发展历程 ---------- */
.page-about .about-history {
  padding-block: clamp(2.6rem, 7vw, 5rem);
}

.page-about .about-history__wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: start;
}

.page-about .about-history__intro {
  max-width: 52ch;
  margin: 0 0 clamp(1.4rem, 4vw, 2.2rem);
  font-size: clamp(0.95rem, 2.3vw, 1rem);
  line-height: 1.78;
  color: rgba(42, 27, 20, 0.78);
}

.page-about .about-timeline {
  --tl-pad: 2rem;
  --tl-line: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--tl-pad);
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: var(--tl-line);
  top: 0.6rem;
  bottom: 0.8rem;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--signal), var(--vyellow) 42%, var(--vgreen) 78%, var(--vblue));
  opacity: 0.65;
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: clamp(1.2rem, 3vw, 1.8rem);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: calc(var(--tl-line) - var(--tl-pad) - 0.45rem);
  top: 0.5rem;
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 50%;
  background: var(--cream);
  border: 2px solid var(--flame);
}

.page-about .about-timeline__item--current::before {
  background: var(--signal);
  border-color: var(--signal);
  box-shadow: 0 0 0 5px rgba(255, 106, 42, 0.18);
}

.page-about .about-timeline__body {
  border-bottom: 1px dashed var(--ab-line);
  padding-bottom: clamp(1rem, 3vw, 1.4rem);
}

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

.page-about .about-timeline__ver {
  margin: 0 0 0.35rem;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--flame);
}

.page-about .about-timeline__ver span {
  display: inline-block;
  margin-left: 0.4rem;
  padding: 0.1rem 0.5rem;
  border-radius: var(--pill);
  background: rgba(42, 27, 20, 0.07);
  color: rgba(42, 27, 20, 0.7);
  font-size: 0.72rem;
}

.page-about .about-timeline__item--current .about-timeline__ver {
  color: var(--signal-ink);
}

.page-about .about-timeline__item--current .about-timeline__ver span {
  background: var(--signal);
  color: var(--signal-ink);
}

.page-about .about-timeline__body p:last-child {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(42, 27, 20, 0.74);
}

.page-about .about-history__aside {
  display: grid;
  gap: 0.9rem;
}

.page-about .about-side-card {
  border-radius: var(--r-md);
  padding: 1.1rem 1.15rem 1.2rem;
  background: var(--cream);
  border: 1px solid var(--ab-line-soft);
  box-shadow: var(--shadow);
}

.page-about .about-side-card--accent {
  background: var(--panel);
  border-color: transparent;
  color: var(--mist);
}

.page-about .about-side-card__title {
  margin: 0 0 0.45rem;
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--flame);
}

.page-about .about-side-card--accent .about-side-card__title {
  color: var(--vyellow);
}

.page-about .about-side-card__val {
  margin: 0 0 0.5rem;
  font-size: clamp(1.25rem, 3.6vw, 1.6rem);
  font-weight: 600;
  color: var(--ink);
}

.page-about .about-side-card--accent .about-side-card__val {
  color: var(--mist);
}

.page-about .about-side-card__text {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: rgba(42, 27, 20, 0.72);
}

.page-about .about-side-card--accent .about-side-card__text {
  color: rgba(248, 246, 240, 0.76);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding-block: clamp(2.6rem, 7vw, 5rem);
  background: linear-gradient(180deg, #0b1230, #18234f 60%, #0b1230);
  color: var(--mist);
}

.page-about .about-team h2 {
  color: var(--mist);
}

.page-about .about-team__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 4vw, 2.4rem);
  align-items: start;
}

.page-about .about-team__intro {
  max-width: 52ch;
  margin: 0;
  font-size: clamp(0.95rem, 2.3vw, 1rem);
  line-height: 1.78;
  color: rgba(248, 246, 240, 0.78);
}

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

.page-about .about-team__list {
  margin-top: clamp(1.6rem, 4vw, 2.6rem);
  border-top: 1px solid var(--ab-line-dark);
}

.page-about .about-team__item {
  border-bottom: 1px solid var(--ab-line-dark);
}

.page-about .about-team__summary {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 0.2rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.6vw, 1.18rem);
  color: var(--mist);
  transition: color 0.22s var(--ease);
}

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

.page-about .about-team__summary::after {
  content: "+";
  order: 2;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--signal);
  transition: transform 0.22s var(--ease);
}

.page-about .about-team__item[open] .about-team__summary::after {
  content: "–";
}

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

.page-about .about-team__role {
  flex: 1 1 auto;
}

.page-about .about-team__count {
  order: 1;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--vyellow);
  white-space: nowrap;
}

.page-about .about-team__panel {
  padding: 0 0 1.2rem;
}

.page-about .about-team__panel p {
  margin: 0;
  max-width: 62ch;
  font-size: 0.92rem;
  line-height: 1.78;
  color: rgba(248, 246, 240, 0.76);
}

/* ---------- 内容生产流程 ---------- */
.page-about .about-flow {
  padding-block: clamp(2.6rem, 7vw, 5rem);
  background: var(--cream);
}

.page-about .about-flow__steps {
  list-style: none;
  margin: clamp(1.4rem, 4vw, 2.2rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  counter-reset: flow;
}

.page-about .about-flow__step {
  position: relative;
  padding: 1.1rem 0 1.2rem 0;
  border-top: 1px solid var(--ab-line-soft);
}

.page-about .about-flow__step:first-child {
  border-top: 2px solid var(--ink);
}

.page-about .about-flow__num {
  display: inline-block;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--signal);
  margin-bottom: 0.4rem;
}

.page-about .about-flow__step h3 {
  margin: 0 0 0.35rem;
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(42, 27, 20, 0.74);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  padding-block: clamp(2.6rem, 7vw, 5rem);
}

.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.8rem);
  align-items: start;
}

.page-about .about-partners__copy p {
  margin: 0 0 1rem;
  max-width: 54ch;
  font-size: clamp(0.95rem, 2.3vw, 1rem);
  line-height: 1.78;
  color: rgba(42, 27, 20, 0.8);
}

.page-about .about-partners__stats {
  list-style: none;
  margin: clamp(1.2rem, 3vw, 1.8rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
}

.page-about .about-partners__stats li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.9rem 0.8rem;
  border-radius: var(--r-sm);
  background: var(--cream);
  border: 1px solid var(--ab-line-soft);
}

.page-about .about-partners__val {
  font-size: clamp(1.3rem, 4vw, 1.7rem);
  font-weight: 600;
  color: var(--flame);
  line-height: 1;
}

.page-about .about-partners__key {
  font-size: 0.76rem;
  line-height: 1.4;
  color: rgba(42, 27, 20, 0.72);
}

.page-about .about-honor {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  margin-top: clamp(1.2rem, 3vw, 1.8rem);
  padding: 1rem 1.1rem;
  border-radius: var(--r-md);
  background: var(--panel);
  color: var(--mist);
}

.page-about .about-honor__badge {
  flex: 0 0 auto;
  padding: 0.2rem 0.6rem;
  border-radius: var(--pill);
  background: var(--signal);
  color: var(--signal-ink);
  font-size: 0.78rem;
  font-weight: 600;
}

.page-about .about-honor__text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(248, 246, 240, 0.82);
}

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

.page-about .about-partners__figure .figure__caption {
  color: rgba(42, 27, 20, 0.66);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding-block: clamp(2.2rem, 6vw, 3.6rem);
  background: var(--night);
  color: var(--mist);
  border-top: 3px solid var(--signal);
}

.page-about .about-next__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.2rem, 3vw, 2.4rem);
  align-items: center;
}

.page-about .about-next h2 {
  color: var(--mist);
  margin-top: 0;
}

.page-about .about-next p {
  margin: 0;
  max-width: 46ch;
  font-size: 0.94rem;
  line-height: 1.75;
  color: rgba(248, 246, 240, 0.74);
}

.page-about .about-next__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.55rem;
}

.page-about .about-next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.85rem 1.1rem;
  border-radius: var(--pill);
  border: 1px solid var(--ab-line-dark);
  color: var(--mist);
  text-decoration: none;
  font-size: 0.92rem;
  transition: background 0.22s var(--ease), color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-about .about-next__link span {
  color: var(--signal);
  font-family: var(--font-mono);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--signal-ink);
}

.page-about .about-next__link:hover span,
.page-about .about-next__link:focus-visible span {
  color: var(--signal-ink);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-flow__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 1.6rem;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-about .about-index {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-origin .split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2rem, 4vw, 3.6rem);
  }

  .page-about .about-note {
    padding-top: 1.2rem;
  }

  .page-about .about-history__wrap {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-about .about-history__aside {
    position: sticky;
    top: 1.5rem;
  }

  .page-about .about-team__head {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: clamp(2rem, 4vw, 3.2rem);
  }

  .page-about .about-flow__steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    column-gap: 1.1rem;
  }

  .page-about .about-flow__step {
    padding-top: 0.9rem;
    border-top: 2px solid var(--ab-line);
  }

  .page-about .about-flow__step:first-child {
    border-top-color: var(--ink);
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: clamp(2rem, 4vw, 3.2rem);
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(1.6rem, 4vw, 3rem);
  }
}

@media (min-width: 1100px) {
  .page-about .about-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-next__link,
  .page-about .about-team__summary,
  .page-about .breadcrumb-link {
    transition: none;
  }
}

.page-about .about-next__link:focus-visible,
.page-about .about-team__summary:focus-visible,
.page-about .breadcrumb-link:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}