/* ===== 品牌故事页面专属样式 ===== */
.page-about {
  background: var(--c-paper);
  color: var(--c-ink);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow: hidden;
}

/* ---------- Hero 首屏 ---------- */
.page-about__hero {
  position: relative;
  background-color: var(--c-deep-950);
  background-image: var(--grid-blueprint);
  background-size: 48px 48px;
  color: #F5F1E8;
  padding: 84px 20px 48px;
  overflow: hidden;
}
.page-about__hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10, 17, 40, 0.92) 0%, rgba(18, 42, 92, 0.72) 55%, rgba(10, 17, 40, 0.45) 100%);
  pointer-events: none;
  z-index: 1;
}
.page-about__hero > * {
  position: relative;
  z-index: 2;
}
.page-about__breadcrumb {
  max-width: var(--container-w);
  margin: 0 auto 36px;
  font-size: 14px;
  color: rgba(245, 241, 232, 0.7);
}
.page-about__breadcrumb a {
  color: var(--c-green);
  text-decoration: none;
}
.page-about__breadcrumb a:hover {
  text-decoration: underline;
}
.page-about__breadcrumb .breadcrumb__sep {
  margin: 0 8px;
  color: rgba(245, 241, 232, 0.5);
}
.page-about__hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  max-width: var(--container-w);
  margin: 0 auto;
  align-items: center;
}
.page-about__kicker {
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--c-green);
  text-transform: uppercase;
  margin: 0 0 16px;
}
.page-about__hero-copy h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 36px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  color: #F5F1E8;
}
.page-about__lead {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(245, 241, 232, 0.86);
  max-width: 56ch;
  margin: 0 0 28px;
}
.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about__hero-figure {
  margin: 0;
  position: relative;
}
.page-about__hero-img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 8.5;
  object-fit: cover;
  display: block;
  clip-path: var(--cut-corner);
  border: 1px solid rgba(57, 255, 136, 0.4);
}
.page-about__hero-caption {
  margin-top: 8px;
  font-family: var(--font-num);
  font-size: 13px;
  color: rgba(245, 241, 232, 0.6);
  letter-spacing: 0.06em;
  text-align: right;
}
.page-about__hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: var(--container-w);
  margin: 48px auto 0;
  padding-top: 32px;
  border-top: 1px solid rgba(57, 255, 136, 0.25);
}
.page-about__stat {
  background: rgba(18, 42, 92, 0.55);
  border: 1px solid rgba(57, 255, 136, 0.18);
  padding: 16px 14px;
  clip-path: var(--cut-sm);
  backdrop-filter: blur(4px);
}
.page-about__stat .num {
  font-size: 32px;
  line-height: 1.1;
}
.page-about__stat-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: rgba(245, 241, 232, 0.72);
}
.page-about__stat[data-flash] {
  animation: page-about-stage-flash 0.4s ease-out;
}
@keyframes page-about-stage-flash {
  0% { box-shadow: 0 0 0 rgba(57, 255, 136, 0); }
  40% { box-shadow: 0 0 24px rgba(57, 255, 136, 0.55); }
  100% { box-shadow: 0 0 0 rgba(57, 255, 136, 0); }
}

/* ---------- 起源章节 ---------- */
.page-about__origin {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 72px 20px 48px;
}
.page-about__origin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.page-about__origin-story {
  padding: 28px 24px;
  font-size: 16px;
  border-left: 4px solid var(--c-green);
}
.page-about__origin-story p {
  margin: 0 0 16px;
}
.page-about__origin-story p:last-child {
  margin-bottom: 0;
}
.page-about__origin-data {
  padding: 24px 22px;
}
.page-about__origin-data .tag {
  margin-bottom: 16px;
}
.page-about__origin-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about__origin-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 15px;
  color: rgba(245, 241, 232, 0.88);
}
.page-about__origin-list li .num {
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 500;
  color: var(--c-green);
  min-width: 6ch;
  text-align: right;
}
.page-about__wave {
  display: block;
  width: 100%;
  height: 80px;
  margin: 40px auto 0;
  max-width: 1240px;
}

/* ---------- 发展里程碑 ---------- */
.page-about__milestones {
  background-color: var(--c-deep-950);
  background-image: var(--grid-blueprint);
  background-size: 56px 56px;
  color: #F5F1E8;
  padding: 72px 20px 80px;
}
.page-about__milestones .section__index {
  color: var(--c-green);
}
.page-about__milestones .section__title,
.page-about__milestones .section__desc {
  color: #F5F1E8;
}
.page-about__milestones-layout {
  max-width: var(--container-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  margin-top: 40px;
}
.page-about__milestones-figure {
  margin: 0;
  order: 2;
}
.page-about__milestones-img {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  clip-path: var(--cut-corner);
  border: 1px solid rgba(57, 255, 136, 0.28);
}
.page-about__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  order: 1;
}
.page-about__timeline-item {
  position: relative;
  padding-left: 44px;
  margin-bottom: 28px;
}
.page-about__timeline-item:last-child {
  margin-bottom: 0;
}
.page-about__timeline-rail {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 32px;
}
.page-about__timeline-rail::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 8px;
  bottom: -16px;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-green) 0%, var(--c-line) 100%);
}
.page-about__timeline-item:last-child .page-about__timeline-rail::before {
  display: none;
}
.page-about__timeline-year {
  position: absolute;
  top: -2px;
  left: 0;
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 500;
  color: var(--c-green);
  background: var(--c-deep-950);
  padding: 2px 6px;
  z-index: 1;
  letter-spacing: 0.04em;
}
.page-about__timeline-marker {
  position: absolute;
  top: 26px;
  left: 8px;
  width: 12px;
  height: 12px;
  transform: rotate(45deg);
  background: var(--c-green);
  border: 2px solid var(--c-deep-950);
  box-shadow: 0 0 0 2px rgba(57, 255, 136, 0.15);
  z-index: 1;
}
.page-about__timeline-card {
  background: var(--c-paper);
  color: var(--c-ink);
  padding: 22px 20px;
  position: relative;
  border: 0;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}
.page-about__timeline-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--c-green);
  clip-path: var(--cut-sm);
}
.page-about__timeline-item:hover .page-about__timeline-card {
  transform: translateX(6px);
  box-shadow: 0 12px 32px rgba(57, 255, 136, 0.14);
}
.page-about__timeline-ver {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 500;
  color: var(--c-deep-950);
  background: var(--c-green);
  padding: 2px 8px;
  clip-path: var(--cut-sm);
  margin-bottom: 10px;
}
.page-about__timeline-card h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--c-ink);
}
.page-about__timeline-card p {
  font-size: 14.5px;
  line-height: 1.7;
  margin: 0 0 10px;
  color: rgba(17, 24, 39, 0.82);
}
.page-about__timeline-point {
  font-size: 13px;
  color: var(--c-deep-700);
  border-top: 1px dashed var(--c-line);
  padding-top: 10px;
  margin-top: 4px;
  margin-bottom: 0;
  font-weight: 500;
}

/* ---------- 数据体系能力 ---------- */
.page-about__capability {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 72px 20px 64px;
}
.page-about__capability-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.page-about__capability-card {
  padding: 28px 22px;
  border-top: 4px solid var(--c-green);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}
.page-about__capability-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(10, 17, 40, 0.12);
}
.page-about__capability-card h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--c-ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.page-about__capability-card h3::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--c-green);
  transform: rotate(45deg);
  flex: none;
}
.page-about__capability-num {
  font-size: 44px;
  line-height: 1;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.page-about__capability-card p:last-child {
  font-size: 14.5px;
  color: rgba(17, 24, 39, 0.78);
  margin: 0;
}
.page-about__capability-card[data-flash] {
  animation: page-about-card-flash 0.4s ease-out;
}
@keyframes page-about-card-flash {
  0% { box-shadow: 0 0 0 rgba(57, 255, 136, 0); }
  40% { box-shadow: 0 0 28px rgba(57, 255, 136, 0.4); }
  100% { box-shadow: 0 0 0 rgba(57, 255, 136, 0); }
}
.page-about__capability-note {
  margin: 32px auto 0;
  max-width: 70ch;
  text-align: center;
  font-size: 13px;
  color: var(--c-line);
  border-top: 1px dashed var(--c-line);
  padding-top: 20px;
}

/* ---------- 团队与文化 ---------- */
.page-about__team {
  background-color: var(--c-deep-950);
  background-image: var(--grid-blueprint);
  background-size: 48px 48px;
  color: #F5F1E8;
  padding: 72px 20px 80px;
}
.page-about__team .section__index {
  color: var(--c-green);
}
.page-about__team .section__title,
.page-about__team .section__desc {
  color: #F5F1E8;
}
.page-about__team-layout {
  max-width: var(--container-w);
  margin: 40px auto 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
}
.page-about__team-figure {
  margin: 0;
}
.page-about__team-img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  clip-path: var(--cut-corner);
  border: 1px solid rgba(57, 255, 136, 0.22);
}
.page-about__team-content {
  padding: 28px 26px;
  background: var(--c-paper);
  color: var(--c-ink);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.page-about__team-content p {
  font-size: 15.5px;
  line-height: 1.8;
  margin: 0 0 14px;
  color: rgba(17, 24, 39, 0.84);
}
.page-about__team-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
  margin-bottom: 0 !important;
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-about__hero {
    padding-top: 96px;
  }
  .page-about__hero-copy h1 {
    font-size: 48px;
  }
  .page-about__origin-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
  }
  .page-about__milestones-layout {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 40px;
  }
  .page-about__milestones-figure {
    order: 2;
    align-self: start;
    position: sticky;
    top: 96px;
  }
  .page-about__timeline {
    order: 1;
  }
  .page-about__capability-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about__team-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
}

@media (min-width: 1024px) {
  .page-about__hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
  }
  .page-about__hero-copy h1 {
    font-size: 56px;
  }
  .page-about__hero-stats {
    gap: 20px;
  }
  .page-about__stat {
    padding: 20px 18px;
  }
  .page-about__stat .num {
    font-size: 40px;
  }
  .page-about__timeline-card {
    padding: 26px 24px;
  }
  .page-about__timeline-card h3 {
    font-size: 22px;
  }
  .page-about__timeline-card p {
    font-size: 15px;
  }
  .page-about__capability-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }
  .page-about__capability-num {
    font-size: 48px;
  }
  .page-about__team-content {
    padding: 36px 32px;
  }
}

@media (max-width: 400px) {
  .page-about__hero {
    padding-left: 14px;
    padding-right: 14px;
  }
  .page-about__hero-stats {
    gap: 8px;
  }
  .page-about__stat .num {
    font-size: 26px;
  }
  .page-about__stat-label {
    font-size: 12px;
  }
  .page-about__timeline-item {
    padding-left: 38px;
  }
}