.page-about {
  --about-skew: 8deg;
  background: var(--hb-paper);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 40px) 0 clamp(52px, 8vw, 92px);
  background: var(--hb-char);
  color: var(--hb-on-dark);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -26%;
  left: 34%;
  height: 66%;
  pointer-events: none;
  transform: skewY(calc(var(--about-skew) * -1));
  background: linear-gradient(135deg, rgba(240, 68, 27, 0.36), rgba(242, 163, 58, 0.14) 46%, transparent 72%);
}

.page-about .about-hero .hb-breadcrumb {
  position: relative;
  margin: 0 0 22px;
  color: var(--hb-on-dark-mute);
}

.page-about .about-hero .hb-breadcrumb a {
  color: var(--hb-on-dark-soft);
}

.page-about .about-hero .hb-breadcrumb [aria-current="page"] {
  color: var(--hb-on-dark);
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
}

.page-about .about-hero__title {
  margin: 16px 0 20px;
  font-family: var(--hb-font-display);
  font-size: clamp(34px, 7.4vw, 64px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--hb-flame-soft);
}

.page-about .about-hero__lede {
  max-width: 40ch;
  margin: 0;
  font-size: var(--hb-fs-16);
  line-height: 1.8;
  color: var(--hb-on-dark-soft);
}

.page-about .about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 4vw, 44px);
  margin: 30px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid var(--hb-line-dark);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-stat__num {
  font-size: var(--hb-fs-28);
  font-weight: 700;
  line-height: 1;
  color: var(--hb-lava);
  letter-spacing: 0.01em;
}

.page-about .about-stat__label {
  font-size: var(--hb-fs-12);
  color: var(--hb-on-dark-mute);
  letter-spacing: 0.06em;
}

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

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  clip-path: polygon(0 7%, 13% 0, 100% 0, 100% 93%, 87% 100%, 0 100%);
  box-shadow: var(--hb-shadow-2);
}

.page-about .about-hero__figcap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  font-size: var(--hb-fs-12);
  line-height: 1.6;
  color: var(--hb-on-dark-mute);
}

.page-about .about-hero__figcap .hb-mono {
  padding: 3px 8px;
  border: 1px solid var(--hb-line-dark);
  border-radius: var(--hb-radius-sm);
  letter-spacing: 0.1em;
  color: var(--hb-lava);
}

/* ---------- 三个时刻 ---------- */
.page-about .about-scenes {
  background: var(--hb-cream);
}

.page-about .about-scenes__grid {
  display: grid;
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-scenes__item {
  padding: clamp(20px, 3vw, 26px) 0;
  border-top: 2px solid var(--hb-line);
  transition: border-color 0.25s ease;
}

.page-about .about-scenes__item:hover {
  border-top-color: var(--hb-flame);
}

.page-about .about-scenes__no {
  display: block;
  margin-bottom: 10px;
  font-size: var(--hb-fs-14);
  letter-spacing: 0.12em;
  color: var(--hb-flame);
}

.page-about .about-scenes__item .hb-subheading {
  margin: 0 0 10px;
  font-size: var(--hb-fs-20);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.page-about .about-scenes__item p {
  margin: 0;
  max-width: 40ch;
  font-size: var(--hb-fs-14);
  line-height: 1.78;
  color: var(--hb-ink-soft);
}

/* ---------- 团队 ---------- */
.page-about .about-team-sec {
  background: var(--hb-paper);
}

.page-about .about-team-sec__note {
  max-width: 34ch;
  margin: 0;
  font-size: var(--hb-fs-14);
  line-height: 1.7;
}

.page-about .about-team__grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-team__card {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--hb-line-soft);
  border-radius: var(--hb-radius);
  background: var(--hb-paper);
  box-shadow: var(--hb-shadow-1);
  transition: box-shadow 0.25s ease, border-color 0.25s ease, translate 0.25s ease;
}

.page-about .about-team__card:hover {
  translate: 0 -3px;
  border-color: rgba(240, 68, 27, 0.34);
  box-shadow: var(--hb-shadow-2);
}

.page-about .about-team__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 5px 10px 5px 6px;
  border-left: 3px solid var(--hb-clay);
  background: rgba(184, 92, 58, 0.09);
  font-size: var(--hb-fs-14);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--hb-ink);
}

.page-about .about-team__tag-no {
  font-size: var(--hb-fs-12);
  letter-spacing: 0.08em;
  color: var(--hb-clay);
}

.page-about .about-team__count {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 0 0 12px;
  font-size: var(--hb-fs-28);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--hb-char);
}

.page-about .about-team__count .hb-mono {
  font-size: var(--hb-fs-40);
  color: var(--hb-char);
}

.page-about .about-team__desc {
  margin: 0;
  font-size: var(--hb-fs-14);
  line-height: 1.82;
  color: var(--hb-ink-soft);
}

/* ---------- 发展历程 ---------- */
.page-about .about-history {
  background: var(--hb-cream);
}

.page-about .about-timeline {
  position: relative;
  margin: clamp(24px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 30px;
  left: 7px;
  width: 2px;
  background: linear-gradient(180deg, var(--hb-flame), var(--hb-lava) 48%, var(--hb-cyan));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 38px) 34px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 1px;
  width: 14px;
  height: 14px;
  background: var(--hb-cream);
  border: 2px solid var(--hb-flame);
  transform: rotate(45deg);
  transition: background 0.22s ease, border-color 0.22s ease;
}

.page-about .about-timeline__item:hover::before {
  background: var(--hb-flame);
  border-color: var(--hb-lava);
}

.page-about .about-timeline__year {
  margin: 0 0 6px;
  font-size: var(--hb-fs-20);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--hb-flame);
}

.page-about .about-timeline__title {
  margin: 0 0 8px;
  font-size: var(--hb-fs-20);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.4;
  color: var(--hb-ink);
}

.page-about .about-timeline__desc {
  max-width: 52ch;
  margin: 0;
  font-size: var(--hb-fs-14);
  line-height: 1.8;
  color: var(--hb-ink-soft);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  position: relative;
  overflow: hidden;
  padding: clamp(48px, 7vw, 92px) 0;
  background: var(--hb-coal);
  color: var(--hb-on-dark);
}

.page-about .about-partners::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -14%;
  width: 46%;
  height: 70%;
  pointer-events: none;
  transform: skewY(var(--about-skew));
  background: linear-gradient(210deg, rgba(43, 167, 184, 0.24), transparent 68%);
}

.page-about .about-partners__grid {
  position: relative;
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-about .about-partners .hb-heading {
  margin: 12px 0 16px;
  color: var(--hb-on-dark);
}

.page-about .about-partners__lede {
  max-width: 44ch;
  margin: 0 0 26px;
  font-size: var(--hb-fs-16);
  line-height: 1.8;
  color: var(--hb-on-dark-soft);
}

.page-about .about-partners__list {
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hb-line-dark);
}

.page-about .about-partners__list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--hb-line-dark);
}

.page-about .about-partners__item-title {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 6px;
  font-size: var(--hb-fs-16);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-about .about-partners__item-title .hb-mono {
  font-size: var(--hb-fs-28);
  font-weight: 700;
  color: var(--hb-lava);
}

.page-about .about-partners__item-desc {
  margin: 0;
  font-size: var(--hb-fs-14);
  line-height: 1.75;
  color: var(--hb-on-dark-mute);
}

.page-about .about-award {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  padding: 16px 18px;
  border: 1px solid rgba(242, 163, 58, 0.52);
  border-radius: var(--hb-radius);
  background: rgba(242, 163, 58, 0.08);
}

.page-about .about-award__label {
  padding: 3px 9px;
  border: 1px solid rgba(242, 163, 58, 0.6);
  border-radius: var(--hb-radius-sm);
  font-size: var(--hb-fs-12);
  letter-spacing: 0.1em;
  color: var(--hb-lava);
}

.page-about .about-award__text {
  margin: 0;
  font-size: var(--hb-fs-14);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--hb-on-dark);
}

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

.page-about .about-partners__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--hb-radius);
  border: 1px solid var(--hb-line-dark);
  box-shadow: var(--hb-shadow-2);
}

/* ---------- 工作节奏 ---------- */
.page-about .about-flow {
  background: var(--hb-paper);
}

.page-about .about-flow__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

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

.page-about .about-flow__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--hb-radius);
  clip-path: polygon(0 0, 100% 0, 100% 88%, 90% 100%, 0 100%);
  box-shadow: var(--hb-shadow-1);
}

.page-about .about-flow .hb-heading {
  margin: 12px 0 14px;
}

.page-about .about-flow__lede {
  max-width: 44ch;
  margin: 0 0 24px;
  font-size: var(--hb-fs-16);
  line-height: 1.8;
  color: var(--hb-ink-soft);
}

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

.page-about .about-flow__list li {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--hb-line-soft);
}

.page-about .about-flow__list li:last-child {
  border-bottom: 1px solid var(--hb-line-soft);
}

.page-about .about-flow__time {
  display: inline-block;
  align-self: start;
  padding: 3px 0;
  font-size: var(--hb-fs-12);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--hb-cyan);
}

.page-about .about-flow__list strong {
  display: block;
  margin-bottom: 6px;
  font-size: var(--hb-fs-16);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--hb-ink);
}

.page-about .about-flow__list p {
  margin: 0;
  font-size: var(--hb-fs-14);
  line-height: 1.78;
  color: var(--hb-ink-soft);
}

.page-about .about-flow__tail {
  margin: 24px 0 0;
  font-size: var(--hb-fs-14);
  line-height: 1.8;
  color: var(--hb-ink-mute);
}

.page-about .about-flow__link {
  color: var(--hb-flame);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-about .about-flow__link:hover {
  color: var(--hb-clay);
}

/* ---------- 内容共建 ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
  padding: clamp(44px, 6vw, 80px) 0;
  background: var(--hb-char);
  color: var(--hb-on-dark);
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -34%;
  left: 42%;
  height: 78%;
  pointer-events: none;
  transform: skewY(calc(var(--about-skew) * -1));
  background: linear-gradient(135deg, rgba(240, 68, 27, 0.42), rgba(242, 163, 58, 0.12) 52%, transparent 76%);
}

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

.page-about .about-cta__title {
  max-width: 22ch;
  margin: 12px 0 16px;
  font-family: var(--hb-font-display);
  font-size: clamp(26px, 4.4vw, 44px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.page-about .about-cta__desc {
  max-width: 48ch;
  margin: 0 0 26px;
  font-size: var(--hb-fs-14);
  line-height: 1.82;
  color: var(--hb-on-dark-soft);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 22px;
  }
}

@media (min-width: 780px) {
  .page-about .about-scenes__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-scenes__item {
    padding: 24px 24px 6px 26px;
    border-top: none;
    border-left: 2px solid var(--hb-line);
  }

  .page-about .about-scenes__item:first-child {
    padding-left: 0;
    border-left: none;
  }

  .page-about .about-scenes__item:hover {
    border-top-color: transparent;
    border-left-color: var(--hb-flame);
  }

  .page-about .about-scenes__item:first-child:hover {
    border-left-color: transparent;
  }

  .page-about .about-flow__list li {
    grid-template-columns: 76px minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.06fr 0.94fr;
  }

  .page-about .about-team__card:nth-child(2),
  .page-about .about-team__card:nth-child(4) {
    transform: translateY(26px);
  }

  .page-about .about-team__grid {
    padding-bottom: 34px;
  }

  .page-about .about-flow__grid {
    grid-template-columns: 0.92fr 1.08fr;
    align-items: center;
  }

  .page-about .about-partners__grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-about .about-timeline {
    padding-left: 16px;
  }

  .page-about .about-timeline__item {
    padding-left: 42px;
  }

  .page-about .about-timeline__item::before {
    left: 18px;
  }

  .page-about .about-timeline::before {
    left: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__card,
  .page-about .about-scenes__item,
  .page-about .about-timeline__item::before {
    transition: none;
  }

  .page-about .about-team__card:hover {
    translate: none;
  }
}