/* ============ 品牌文化页 · page-about ============ */

.page-about {
  --about-glow: rgba(38, 242, 208, 0.14);
  --about-warm-glow: rgba(255, 122, 26, 0.12);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-top: clamp(22px, 4.5vw, 44px);
  padding-bottom: clamp(36px, 6.5vw, 78px);
}

.page-about .breadcrumbs {
  margin-bottom: clamp(22px, 3.6vw, 42px);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
}

.page-about .about-kicker {
  color: var(--cyan);
  margin: 0 0 14px;
}

.page-about .about-title {
  margin: 0 0 20px;
  font-size: clamp(2.05rem, 5.4vw, 3.85rem);
  line-height: 1.14;
  letter-spacing: -0.012em;
  color: var(--ink);
}

.page-about .about-lede {
  max-width: 48ch;
  margin: 0 0 30px;
  color: var(--muted);
  font-size: clamp(1rem, 1.15vw, 1.08rem);
  line-height: 1.85;
}

.page-about .about-figures {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-faint);
  border: 1px solid var(--line-faint);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-figure {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 18px 16px;
  background: var(--blueprint);
}

.page-about .about-figure-num {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.4vw, 2.15rem);
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--cyan);
}

.page-about .about-figure-label {
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--muted);
}

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

.page-about .about-hero-media .media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
}

.page-about .about-hero-media .media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(150deg, rgba(7, 13, 26, 0) 46%, var(--about-glow) 100%),
    linear-gradient(0deg, rgba(7, 13, 26, 0.55), rgba(7, 13, 26, 0) 44%);
}

.page-about .about-hero-media .media-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .media-caption {
  margin-top: 12px;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ---------- 章节标题 ---------- */

.page-about .chapter {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .chapter-title {
  color: var(--ink);
}

/* ---------- 01 使命 ---------- */

.page-about .about-mission-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-mission-quote {
  margin: 0;
  padding-left: clamp(16px, 2.4vw, 26px);
  border-left: 2px solid var(--cyan);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.8vw, 1.85rem);
  line-height: 1.42;
  color: var(--cyan-soft);
}

.page-about .about-mission-body p {
  margin: 0 0 1em;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.85;
}

.page-about .about-mission-body p:last-child {
  margin-bottom: 0;
}

.page-about .about-tree {
  list-style: none;
  margin: clamp(32px, 5vw, 54px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  position: relative;
}

.page-about .tree-node {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px 22px 26px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(21, 36, 64, 0.94), rgba(14, 26, 48, 0.72));
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-about .tree-node::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 18px;
  right: 42%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(38, 242, 208, 0));
}

.page-about .tree-node::after {
  content: "";
  position: absolute;
  right: 16px;
  bottom: 14px;
  width: 26px;
  height: 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-radius: 0 0 6px 0;
  opacity: 0.9;
}

.page-about .tree-node:hover,
.page-about .tree-node:focus-within {
  border-color: var(--cyan);
  transform: translateY(-3px);
}

.page-about .tree-step {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 2.35rem;
  line-height: 1;
  color: var(--orange);
  letter-spacing: 0.01em;
}

.page-about .tree-title {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--ink);
}

.page-about .tree-text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 02 历程 ---------- */

.page-about .about-section-lede {
  max-width: 62ch;
  margin: 0 0 clamp(26px, 4vw, 44px);
  color: var(--muted);
}

.page-about .about-history-media {
  margin: 0 0 clamp(30px, 4.5vw, 52px);
}

.page-about .about-history-media .media-frame {
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
}

.page-about .about-history-media .media-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
}

.page-about .timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: clamp(22px, 3.2vw, 36px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
  background: var(--organic);
  overflow: hidden;
}

.page-about .timeline-item:nth-child(even) {
  background: var(--blueprint);
}

.page-about .timeline-item::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -70px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  border: 1px solid var(--line-soft);
  pointer-events: none;
}

.page-about .timeline-year {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: clamp(2.9rem, 8.4vw, 5.1rem);
  line-height: 0.86;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .timeline-item:nth-child(even) .timeline-year {
  color: var(--orange);
}

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

.page-about .timeline-body .label {
  color: var(--cyan-soft);
  margin: 0 0 8px;
}

.page-about .timeline-title {
  margin: 0 0 10px;
  font-size: clamp(1.1rem, 2vw, 1.32rem);
  font-weight: 700;
  color: var(--ink);
}

.page-about .timeline-text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.82;
  color: var(--muted);
  max-width: 62ch;
}

/* ---------- 03 统计方法 ---------- */

.page-about .about-verify-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-about .about-verify-copy p {
  margin: 0 0 1em;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.85;
}

.page-about .about-verify-copy p:last-child {
  margin-bottom: 0;
}

.page-about .about-verify-media {
  margin: 0;
}

.page-about .about-verify-media .media-frame {
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
}

.page-about .about-verify-media .media-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}

.page-about .about-table-wrap {
  margin-top: clamp(30px, 4.5vw, 52px);
  border-radius: var(--r-md);
  border: 1px solid var(--line-soft);
}

.page-about .about-table-wrap .data-table {
  width: 100%;
  min-width: 620px;
}

.page-about .about-table-wrap caption {
  padding: 14px 16px;
  text-align: left;
  color: var(--cyan-soft);
  border-bottom: 1px solid var(--line-soft);
}

/* ---------- 04 团队 ---------- */

.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-faint);
  border: 1px solid var(--line-faint);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .team-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(22px, 3vw, 30px);
  background: var(--blueprint);
}

.page-about .team-index {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.1em;
  color: var(--orange-soft);
}

.page-about .team-title {
  margin: 0;
  font-size: 1.04rem;
  font-weight: 700;
  color: var(--ink);
}

.page-about .team-text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 05 合作生态 ---------- */

.page-about .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .eco-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 24px 22px 26px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, rgba(18, 59, 74, 0.62), rgba(14, 26, 48, 0.92));
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-about .eco-card::before {
  content: "";
  position: absolute;
  top: 16px;
  right: 16px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--about-glow);
}

.page-about .eco-card:hover,
.page-about .eco-card:focus-within {
  border-color: var(--cyan);
  transform: translateY(-3px);
}

.page-about .eco-card.is-hidden {
  display: none;
}

.page-about .eco-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  padding-right: 22px;
}

.page-about .eco-text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 06 联络 ---------- */

.page-about .about-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.5vw, 46px);
  padding: clamp(26px, 4vw, 48px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
  background:
    radial-gradient(120% 140% at 100% 0%, var(--about-glow), rgba(7, 13, 26, 0) 62%),
    linear-gradient(160deg, var(--blueprint), var(--organic));
}

.page-about .about-contact-lead {
  margin: 0 0 24px;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--muted);
  max-width: 52ch;
}

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

.page-about .about-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-soft);
  background: rgba(7, 13, 26, 0.55);
}

.page-about .contact-item--wide {
  align-items: flex-start;
}

.page-about .contact-label {
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--muted);
  min-width: 72px;
}

.page-about .contact-value {
  flex: 1 1 160px;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--ink);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */

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

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

@media (min-width: 720px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-about .timeline-item {
    grid-template-columns: minmax(140px, 210px) minmax(0, 1fr);
    align-items: center;
    gap: clamp(24px, 4vw, 56px);
  }
}

@media (min-width: 860px) {
  .page-about .about-tree {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 880px) {
  .page-about .about-contact {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.06fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-mission-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-about .about-verify-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

@media (min-width: 960px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .about-hero {
    padding-bottom: clamp(60px, 7vw, 96px);
  }
}

@media (min-width: 1040px) {
  .page-about .about-team {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .tree-node,
  .page-about .eco-card {
    transition: none;
  }

  .page-about .tree-node:hover,
  .page-about .tree-node:focus-within,
  .page-about .eco-card:hover,
  .page-about .eco-card:focus-within {
    transform: none;
  }
}
<<<END>>>