.page-about {
  --about-cut: 20px;
  --about-cut-sm: 12px;
  --about-edge: rgba(11, 59, 46, 0.15);
  background: var(--ivory);
  color: var(--charcoal);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  line-height: 1.2;
  letter-spacing: 0.01em;
  margin: 0;
}

.page-about p {
  margin: 0;
}

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

.page-about .section-head__eyebrow {
  color: var(--red);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.page-about .section-head__title {
  margin-top: 10px;
  font-size: clamp(1.65rem, 4.2vw, 2.6rem);
  font-weight: 800;
  color: var(--green-deep);
}

.page-about .section-head__desc {
  margin-top: 12px;
  max-width: 66ch;
  font-size: clamp(0.95rem, 1.6vw, 1.02rem);
  line-height: 1.8;
  color: var(--sage);
}

/* ============ 首屏 ============ */
.page-about .about-hero {
  position: relative;
  padding: clamp(20px, 3.6vw, 38px) 0 clamp(34px, 6vw, 68px);
  background:
    radial-gradient(760px 340px at 94% -12%, rgba(212, 160, 23, 0.24), transparent 68%),
    linear-gradient(158deg, rgba(200, 16, 46, 0.07), transparent 46%),
    var(--ivory);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

.page-about .about-hero__eyebrow {
  display: inline-block;
  padding: 5px 12px;
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--ivory);
  background: var(--red);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.page-about .about-hero__title {
  margin-top: 18px;
  font-size: clamp(2.05rem, 6.4vw, 4rem);
  font-weight: 900;
  color: var(--green-deep);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin-top: 18px;
  max-width: 52ch;
  font-size: clamp(0.98rem, 1.7vw, 1.08rem);
  line-height: 1.85;
  color: #2f3d36;
}

.page-about .about-hero__lede--sub {
  margin-top: 12px;
  font-size: 0.94rem;
  color: var(--sage);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__marks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
}

.page-about .about-hero__marks li {
  padding: 14px 14px 16px;
  background: #fff;
}

.page-about .about-mark__num {
  display: block;
  font-size: clamp(1.05rem, 2.6vw, 1.35rem);
  font-weight: 700;
  color: var(--red);
}

.page-about .about-mark__label {
  display: block;
  margin-top: 5px;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--sage);
}

.page-about .about-hero__visual {
  margin: 0;
  padding: clamp(6px, 1.2vw, 10px);
  background: linear-gradient(150deg, var(--gold) 0%, var(--red-deep) 52%, var(--green-deep) 100%);
  clip-path: polygon(26px 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%, 0 26px);
}

.page-about .about-hero__frame {
  overflow: hidden;
  background: var(--green-night);
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

.page-about .about-hero__frame img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
}

.page-about .about-hero__caption {
  margin-top: 12px;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--sage);
}

@media (min-width: 1000px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
  }

  .page-about .about-hero__marks {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-hero__frame img {
    aspect-ratio: 4 / 3;
  }
}

/* ============ 时间线 ============ */
.page-about .about-timeline {
  padding: clamp(42px, 7vw, 88px) 0;
  background: linear-gradient(180deg, var(--ivory) 0%, #ffffff 42%, var(--ivory) 100%);
}

.page-about .about-timeline__layout {
  display: grid;
  gap: 22px;
  margin-top: clamp(24px, 4vw, 42px);
}

@media (min-width: 1000px) {
  .page-about .about-timeline__layout {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: clamp(30px, 5vw, 62px);
  }
}

.page-about .about-timeline__rail ol {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
}

.page-about .about-year {
  display: inline-block;
  padding: 8px 14px;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--green-deep);
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--edge, var(--line));
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-year:hover,
.page-about .about-year:focus-visible {
  color: var(--red);
  border-color: var(--gold);
  background: rgba(212, 160, 23, 0.14);
}

@media (min-width: 1000px) {
  .page-about .about-timeline__rail {
    position: sticky;
    top: 112px;
    align-self: start;
  }

  .page-about .about-timeline__rail ol {
    flex-direction: column;
    gap: 2px;
    padding: 0;
    overflow: visible;
    border-left: 1px solid var(--line-gold);
  }

  .page-about .about-year {
    position: relative;
    display: block;
    padding: 11px 0 11px 18px;
    background: none;
    border: 0;
    clip-path: none;
  }

  .page-about .about-year::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 9px;
    height: 9px;
    transform: translate(-50%, -50%) rotate(45deg);
    background: var(--gold);
    transition: background-color 0.18s ease, box-shadow 0.18s ease;
  }

  .page-about .about-year:hover,
  .page-about .about-year:focus-visible {
    color: var(--red);
    background: none;
  }

  .page-about .about-year:hover::before,
  .page-about .about-year:focus-visible::before {
    background: var(--neon);
    box-shadow: 0 0 0 4px rgba(25, 227, 194, 0.26);
  }
}

.page-about .about-timeline__stream {
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
}

.page-about .about-node {
  position: relative;
  padding: clamp(18px, 3vw, 28px) clamp(18px, 3vw, 30px);
  background: #fff;
  border: 1px solid var(--about-edge);
  border-left: 4px solid var(--red);
  box-shadow: var(--shadow-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  scroll-margin-top: 120px;
  transition: border-left-color 0.2s ease, transform 0.2s ease;
}

.page-about .about-node:hover {
  border-left-color: var(--gold);
}

.page-about .about-node__year {
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  color: var(--gold-deep);
}

.page-about .about-node__title {
  margin-top: 8px;
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
  font-weight: 800;
  color: var(--green-deep);
}

.page-about .about-node__text {
  margin-top: 10px;
  max-width: 64ch;
  font-size: 0.94rem;
  line-height: 1.85;
  color: #33413a;
}

.page-about .about-node__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

/* ============ 团队 ============ */
.page-about .about-team {
  padding: clamp(44px, 7vw, 90px) 0;
  color: var(--ivory);
  background:
    radial-gradient(880px 400px at 10% 0%, rgba(25, 227, 194, 0.11), transparent 62%),
    radial-gradient(700px 360px at 96% 100%, rgba(212, 160, 23, 0.14), transparent 66%),
    linear-gradient(158deg, var(--green-deep) 0%, var(--green-night) 100%);
}

.page-about .about-team .section-head__eyebrow {
  color: var(--gold-light);
}

.page-about .about-team .section-head__title {
  color: var(--ivory);
}

.page-about .about-team .section-head__desc {
  color: rgba(247, 241, 227, 0.76);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(20px, 3.4vw, 34px);
  margin-top: clamp(24px, 4vw, 44px);
}

@media (min-width: 1000px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }
}

.page-about .about-team__figure {
  margin: 0;
  padding: 8px;
  background: linear-gradient(140deg, rgba(212, 160, 23, 0.9) 0%, rgba(25, 227, 194, 0.35) 58%, rgba(212, 160, 23, 0.62) 100%);
  clip-path: polygon(24px 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%, 0 24px);
}

.page-about .about-team__figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  clip-path: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px);
}

.page-about .about-team__roles {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-role {
  padding: 18px 18px 20px;
  background: rgba(247, 241, 227, 0.06);
  border: 1px solid rgba(212, 160, 23, 0.3);
  clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-role:hover {
  background: rgba(25, 227, 194, 0.08);
  border-color: rgba(25, 227, 194, 0.6);
}

.page-about .about-role__count {
  display: block;
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--gold-light);
}

.page-about .about-role__title {
  margin-top: 6px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ivory);
}

.page-about .about-role__desc {
  margin-top: 9px;
  font-size: 0.87rem;
  line-height: 1.78;
  color: rgba(247, 241, 227, 0.75);
}

.page-about .about-role__tag {
  display: inline-block;
  margin-top: 13px;
  padding: 3px 10px;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--neon);
  border: 1px solid rgba(25, 227, 194, 0.45);
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
}

@media (min-width: 620px) {
  .page-about .about-team__roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ============ 合作与荣誉 ============ */
.page-about .about-partners {
  padding: clamp(44px, 7vw, 90px) 0;
  background: linear-gradient(180deg, var(--ivory) 0%, #ffffff 70%);
}

.page-about .about-partners__layout {
  display: grid;
  gap: clamp(22px, 3.4vw, 36px);
  margin-top: clamp(22px, 4vw, 40px);
}

@media (min-width: 880px) {
  .page-about .about-partners__layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }
}

.page-about .about-partners__text p {
  max-width: 60ch;
  font-size: 0.95rem;
  line-height: 1.88;
  color: #33413a;
}

.page-about .about-partners__text p + p {
  margin-top: 15px;
}

.page-about .about-partners__link {
  display: inline-block;
  margin-top: 18px;
  padding-bottom: 3px;
  font-weight: 600;
  font-size: 0.93rem;
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-partners__link:hover,
.page-about .about-partners__link:focus-visible {
  color: var(--green-deep);
  border-color: var(--neon);
}

.page-about .about-partners__figure {
  margin: 0;
  overflow: hidden;
  background: var(--green-deep);
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

.page-about .about-partners__figure img {
  width: 100%;
  aspect-ratio: 1200 / 628;
  object-fit: cover;
}

.page-about .about-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-badge {
  flex: 1 1 190px;
  min-width: 0;
  padding: 15px 16px 17px;
  background: #fff;
  border-top: 3px solid var(--gold);
  box-shadow: var(--shadow-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 13px), calc(100% - 13px) 100%, 0 100%);
}

.page-about .about-badge--award {
  border-top-color: var(--red);
  background: linear-gradient(160deg, #ffffff 0%, rgba(212, 160, 23, 0.12) 100%);
}

.page-about .about-badge__k {
  display: block;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--red);
}

.page-about .about-badge__v {
  display: block;
  margin-top: 5px;
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--sage);
}

/* ============ 联络 ============ */
.page-about .about-reach {
  padding: clamp(44px, 7vw, 90px) 0;
  background:
    linear-gradient(180deg, rgba(200, 16, 46, 0.055) 0%, transparent 44%),
    var(--ivory);
  border-top: 1px solid var(--line);
}

.page-about .about-reach__grid {
  display: grid;
  gap: clamp(20px, 3.2vw, 34px);
}

@media (min-width: 880px) {
  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 1.22fr) minmax(0, 0.78fr);
    align-items: start;
  }
}

.page-about .about-reach__card {
  padding: clamp(22px, 4vw, 38px);
  background: #fff;
  border: 1px solid var(--about-edge);
  border-top: 5px solid var(--red);
  box-shadow: var(--shadow-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-about .about-reach__eyebrow {
  font-size: 0.76rem;
  letter-spacing: 0.22em;
  color: var(--gold-deep);
}

.page-about .about-reach__title {
  margin-top: 10px;
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  font-weight: 800;
  color: var(--green-deep);
}

.page-about .about-reach__desc {
  margin-top: 12px;
  max-width: 56ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: #33413a;
}

.page-about .about-reach__list {
  display: grid;
  gap: 15px;
  margin: 24px 0 0;
}

.page-about .about-reach__list > div {
  display: grid;
  gap: 5px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.page-about .about-reach__list > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-reach__list dt {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--sage);
}

.page-about .about-reach__list dd {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--charcoal);
  word-break: break-word;
}

.page-about .about-reach__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-reach__aside {
  padding: clamp(20px, 3.4vw, 30px);
  color: var(--ivory);
  background: linear-gradient(165deg, var(--green-deep) 0%, var(--green-night) 100%);
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

.page-about .about-reach__aside h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gold-light);
}

.page-about .about-reach__links {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-reach__links a {
  display: block;
  padding: 10px 12px;
  font-size: 0.88rem;
  line-height: 1.62;
  color: rgba(247, 241, 227, 0.86);
  text-decoration: none;
  border-left: 2px solid rgba(212, 160, 23, 0.5);
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-about .about-reach__links a:hover,
.page-about .about-reach__links a:focus-visible {
  color: var(--neon);
  border-color: var(--neon);
  background: rgba(25, 227, 194, 0.1);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node,
  .page-about .about-role,
  .page-about .about-year,
  .page-about .about-partners__link,
  .page-about .about-reach__links a {
    transition: none;
  }
}
</main>

.page-about {
  --edge: currentColor;
}