.page-about {
  --about-pad: 20px;
  --about-cut: 16px;
  box-sizing: border-box;
  max-width: 1200px;
  margin-inline: auto;
  padding: 0 var(--about-pad) 72px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding: 20px 0 14px;
  font-family: var(--font-num);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: 30px;
  padding-top: 6px;
  scroll-margin-top: 84px;
}

.page-about .about-hero__kicker {
  display: inline-block;
  margin: 0 0 16px;
  padding: 5px 12px 5px 11px;
  font-family: var(--font-num);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--brown);
  background: rgba(217, 164, 65, 0.16);
  border-left: 3px solid var(--red);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%);
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.9rem, 6.4vw, 3.5rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
}

.page-about .about-hero__lead {
  max-width: 44ch;
  margin: 0 0 20px;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--brown);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin: 0 0 24px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-dash);
  font-family: var(--font-num);
  font-size: 0.8125rem;
  color: var(--brown);
}

.page-about .about-hero__meta > span + span::before {
  content: "·";
  margin-right: 10px;
  color: var(--gold);
}

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

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

.page-about .about-hero__media::before {
  content: "";
  position: absolute;
  left: -6%;
  bottom: -8%;
  width: 70%;
  height: 46%;
  background: radial-gradient(closest-side, rgba(230, 106, 44, 0.28), transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__media .frame {
  position: relative;
  z-index: 1;
}

/* ---------- 章节速览 ---------- */
.page-about .about-index {
  margin-top: 6px;
  padding-top: 16px;
  border-top: 1px dashed var(--line-dash);
}

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

.page-about .about-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 13px;
  font-size: 0.8125rem;
  color: var(--brown);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line-dash);
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  background: var(--red);
  border-color: var(--red);
  color: var(--cream);
}

.page-about .about-index__no {
  font-family: var(--font-num);
  font-size: 0.6875rem;
  color: var(--gold);
}

.page-about .about-index__list a:hover .about-index__no,
.page-about .about-index__list a:focus-visible .about-index__no {
  color: var(--cream);
}

/* ---------- 通用章节 ---------- */
.page-about .about-sec {
  padding: 56px 0 10px;
  scroll-margin-top: 84px;
}

.page-about .about-sec + .about-sec {
  margin-top: 40px;
  border-top: 1px dashed var(--line-dash);
}

.page-about .about-sec .sec-head {
  max-width: 62ch;
  margin-bottom: 30px;
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  margin: 0 calc(-1 * var(--about-pad));
  padding: 4px var(--about-pad) 20px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--bronze) transparent;
}

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

.page-about .timeline__item {
  position: relative;
  flex: 0 0 auto;
  width: 84%;
  min-width: 232px;
  max-width: 306px;
  padding: 22px 18px 24px;
  scroll-snap-align: start;
  background: #fff;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red) 0%, var(--gold) 62%, transparent 100%);
}

.page-about .timeline__no {
  display: block;
  font-family: var(--font-num);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--bronze);
}

.page-about .timeline__year {
  margin: 8px 0 6px;
  font-family: var(--font-num);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--red);
}

.page-about .timeline__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 800;
  line-height: 1.45;
}

.page-about .timeline__text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.72;
  color: var(--brown);
}

.page-about .about-roadmap {
  margin: 26px 0 0;
}

/* ---------- 团队 ---------- */
.page-about .team-cards {
  margin-bottom: 0;
}

.page-about .team-card {
  padding: 22px 18px 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(247, 241, 229, 0.55));
  border-left: 3px solid var(--red);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .team-card__num {
  margin: 0;
  font-family: var(--font-num);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--gold);
}

.page-about .team-card__role {
  margin: 10px 0 8px;
  font-family: var(--font-head);
  font-size: 1.125rem;
  font-weight: 800;
}

.page-about .team-card__text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.72;
  color: var(--brown);
}

.page-about .about-team-figure {
  margin: 26px 0 0;
}

/* ---------- 吉祥元素 ---------- */
.page-about .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
}

.page-about .filter-chip {
  padding: 7px 14px;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--brown);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line-dash);
  cursor: pointer;
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-about .filter-chip:hover,
.page-about .filter-chip:focus-visible {
  border-color: var(--gold);
  color: var(--ink);
}

.page-about .filter-chip.is-active {
  background: var(--red);
  border-color: var(--red);
  color: var(--cream);
}

.page-about .filter-count {
  margin-left: auto;
  font-family: var(--font-num);
  font-size: 0.75rem;
  color: var(--bronze);
}

.page-about .motif-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 210px), 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .motif {
  position: relative;
  padding: 20px 16px 22px;
  background: #fff;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.page-about .motif::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--red), var(--gold));
}

.page-about .motif__glyph {
  position: relative;
  display: block;
  width: 26px;
  height: 26px;
  margin-bottom: 12px;
  border: 2px solid var(--gold);
  border-radius: 50%;
}

.page-about .motif__glyph::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 8px;
  height: 8px;
  margin: auto;
  background: var(--red);
}

.page-about .motif__name {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 800;
}

.page-about .motif__text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--brown);
}

.page-about .motif-note {
  margin: 22px 0 0;
  padding: 18px 20px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--brown);
  background: rgba(200, 50, 43, 0.07);
  border-left: 3px solid var(--red);
}

/* ---------- 服务覆盖 ---------- */
.page-about .coverage {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .coverage__cell {
  padding: 20px 18px 22px;
  background: linear-gradient(150deg, var(--night) 0%, #1a1410 100%);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, 0 100%);
}

.page-about .coverage__num {
  margin: 0;
  font-family: var(--font-num);
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--gold);
}

.page-about .coverage__unit {
  margin: 8px 0 10px;
  font-family: var(--font-num);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--bronze);
}

.page-about .coverage__text {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.68;
  color: rgba(247, 241, 229, 0.78);
}

/* ---------- 荣誉与合作 ---------- */
.page-about .honor-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .honor {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  padding: 20px 18px 22px;
  background: rgba(217, 164, 65, 0.1);
  border-left: 3px solid var(--gold);
}

.page-about .honor__year {
  grid-row: 1 / span 2;
  align-self: start;
  font-family: var(--font-num);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--red);
}

.page-about .honor__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 800;
  line-height: 1.45;
}

.page-about .honor__text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--brown);
}

.page-about .about-eco {
  margin-top: 22px;
  padding: 22px 20px;
  background: rgba(47, 125, 92, 0.08);
  border-left: 3px solid var(--jade);
}

.page-about .about-eco__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 800;
}

.page-about .about-eco p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--brown);
}

/* ---------- 收束区 ---------- */
.page-about .about-cta {
  position: relative;
  margin-top: 66px;
  padding: 40px 22px 38px;
  overflow: hidden;
  background: linear-gradient(140deg, var(--night) 0%, #17110d 58%, #241a12 100%);
  color: var(--cream);
  clip-path: polygon(0 0, calc(100% - 34px) 0, 100% 34px, 100% 100%, 34px 100%, 0 calc(100% - 34px));
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(420px 220px at 88% 10%, rgba(230, 106, 44, 0.34), transparent 70%),
    radial-gradient(360px 200px at 4% 94%, rgba(217, 164, 65, 0.24), transparent 72%);
  pointer-events: none;
}

.page-about .about-cta__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-cta__title {
  max-width: 24ch;
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 4.4vw, 2.1rem);
  font-weight: 800;
  line-height: 1.28;
}

.page-about .about-cta__lead {
  max-width: 58ch;
  margin: 0 0 26px;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(247, 241, 229, 0.82);
}

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

/* ---------- 进场显现 ---------- */
.page-about .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.page-about .reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-about .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- 宽屏 ---------- */
@media (min-width: 700px) {
  .page-about .honor-list {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-cta {
    padding: 52px 44px 48px;
  }
}

@media (min-width: 880px) {
  .page-about {
    --about-pad: 28px;
    --about-cut: 20px;
    padding-bottom: 96px;
  }

  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: end;
    gap: 52px;
    padding-top: 14px;
  }

  .page-about .about-hero__media {
    align-self: stretch;
  }

  .page-about .about-index {
    grid-column: 1 / -1;
    margin-top: 12px;
  }

  .page-about .about-sec {
    padding-top: 72px;
  }

  .page-about .timeline__item {
    width: 306px;
  }

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

@media (min-width: 1080px) {
  .page-about .about-cta {
    padding: 60px 56px 56px;
  }
}
<<<END>>>