.page-about {
  display: block;
  background: var(--ink);
  color: var(--text);
  overflow-x: clip;
}

/* ---------- 舞台栅格 ---------- */
.page-about .about-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
  padding-top: clamp(18px, 4vw, 36px);
  padding-bottom: clamp(56px, 9vw, 120px);
}

.page-about .breadcrumb {
  grid-column: 1 / -1;
  margin-bottom: clamp(16px, 3vw, 28px);
}

.page-about .about-stage__body {
  grid-column: 1 / -1;
  min-width: 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  grid-column: 1 / -1;
  position: relative;
  overflow: hidden;
  padding: 0 0 clamp(36px, 6vw, 68px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  left: -14%;
  width: min(760px, 92%);
  height: 400px;
  background:
    radial-gradient(58% 100% at 30% 42%, rgba(16, 68, 58, 0.92), transparent 72%),
    radial-gradient(46% 78% at 80% 8%, rgba(47, 227, 200, 0.13), transparent 70%);
  pointer-events: none;
}

.page-about .about-hero > * {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__kicker {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-hero__title {
  max-width: 12em;
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-about .about-hero__lede {
  max-width: 58ch;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: clamp(14px, 2.4vw, 26px);
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  max-width: 720px;
}

.page-about .about-stat {
  padding-top: 14px;
  border-top: 2px solid var(--cyan-dim);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  padding-block: clamp(30px, 4.6vw, 48px);
  scroll-margin-top: 140px;
}

.page-about .about-kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-dim);
}

.page-about .about-h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 4.2vw, 38px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .about-lead {
  max-width: 64ch;
  margin: 0 0 clamp(24px, 3.4vw, 36px);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-p {
  max-width: 64ch;
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-rule {
  height: 3px;
  border: 0;
  margin: clamp(34px, 5.6vw, 66px) 0;
  background: linear-gradient(90deg, rgba(16, 68, 58, 0) 0%, var(--panel-2) 12%, var(--cyan) 56%, rgba(47, 227, 200, 0) 100%);
  opacity: 0.72;
}

/* ---------- 三条内容线 ---------- */
.page-about .about-lines {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-line {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 18px;
  padding: 22px 22px 22px 20px;
  background: linear-gradient(180deg, rgba(16, 68, 58, 0.5), rgba(14, 38, 32, 0.92));
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
}

.page-about .about-line__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--orange-soft);
  padding-top: 4px;
}

.page-about .about-line__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-about .about-line__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .about-line__fit {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

/* ---------- 发展轨迹 ---------- */
.page-about .about-track {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-track::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--cyan-dim) 42%, rgba(27, 143, 129, 0.12) 100%);
}

.page-about .about-track__item {
  position: relative;
  padding: 0 0 clamp(24px, 3.2vw, 34px) 30px;
  scroll-margin-top: 140px;
}

.page-about .about-track__item:last-child {
  padding-bottom: 0;
}

.page-about .about-track__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 11px;
  height: 11px;
  background: var(--cyan);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px rgba(47, 227, 200, 0.12);
}

.page-about .about-track__year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange-soft);
}

.page-about .about-track__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.25;
  color: var(--text);
}

.page-about .about-track__text {
  max-width: 62ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--muted);
}

/* ---------- 图片 ---------- */
.page-about .about-wide {
  margin: clamp(38px, 5.6vw, 64px) 0;
}

.page-about .about-figure {
  margin: clamp(26px, 3.6vw, 38px) 0 0;
}

.page-about .about-figure--tight {
  margin-top: 0;
}

.page-about .media-frame {
  position: relative;
  overflow: hidden;
  background: var(--panel);
}

.page-about .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (hover: hover) {
  .page-about .media-frame img {
    filter: grayscale(1) contrast(1.04);
    transition: filter var(--r-slow) var(--ease);
  }
  .page-about .media-frame:hover img {
    filter: grayscale(0) contrast(1);
  }
}

/* ---------- 团队 ---------- */
.page-about .about-crew {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .about-crew__item {
  padding-left: 18px;
  border-left: 2px solid var(--cyan-dim);
}

.page-about .about-crew__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--text);
}

.page-about .about-crew__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--muted);
}

/* ---------- 使用场景 ---------- */
.page-about .about-scenes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-scene {
  position: relative;
  padding: 22px 20px;
  background: var(--panel);
  border-top: 2px solid var(--cyan-dim);
  overflow: hidden;
}

.page-about .about-scene::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, transparent 48%, rgba(47, 227, 200, 0.22) 48%);
  pointer-events: none;
}

.page-about .about-scene__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.3;
  color: var(--text);
}

.page-about .about-scene__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--muted);
}

.page-about .about-scene__tag {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

/* ---------- 合作与认可 ---------- */
.page-about .about-proof {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 38px);
}

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

.page-about .about-metric {
  padding: 20px 16px;
  background: var(--panel);
}

.page-about .about-metric__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .about-metric__label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
}

.page-about .about-pull {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 22px 24px;
  background: linear-gradient(102deg, var(--panel-2), rgba(14, 38, 32, 0.95));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
}

.page-about .about-pull strong {
  color: var(--cyan);
  font-weight: 700;
}

/* ---------- 入口与联系 ---------- */
.page-about .about-section--last {
  padding-bottom: 0;
}

.page-about .about-routes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .about-route {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 16px;
  align-items: center;
  padding: 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: background var(--r-base) var(--ease), transform var(--r-base) var(--ease);
}

.page-about .about-route:hover {
  background: var(--panel-2);
  transform: translateX(3px);
}

.page-about .about-route__k {
  grid-column: 1;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
}

.page-about .about-route__d {
  grid-column: 1;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-route__go {
  grid-column: 2;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--cyan);
  transition: transform var(--r-base) var(--ease);
}

.page-about .about-route:hover .about-route__go {
  transform: translateX(4px);
}

.page-about .about-contact {
  margin-top: clamp(24px, 3.4vw, 36px);
  padding: 20px 20px 22px;
  border-top: 2px solid var(--orange);
  background: rgba(14, 38, 32, 0.72);
}

.page-about .about-contact__note {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-contact__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: 0;
  padding: 0;
}

.page-about .about-contact__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-about .about-contact__val {
  display: block;
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--text);
  word-break: break-all;
}

/* ---------- 右侧年份刻度 ---------- */
.page-about .about-scale {
  display: none;
}

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

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

  .page-about .about-crew {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 24px;
  }
}

@media (min-width: 900px) {
  .page-about .about-crew {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-proof {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-about .about-stage {
    grid-template-columns: minmax(0, 1fr) 104px;
    column-gap: clamp(30px, 4vw, 60px);
  }

  .page-about .about-stage__body {
    grid-column: 1;
  }

  .page-about .about-scale {
    grid-column: 2;
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: sticky;
    top: 124px;
    align-self: start;
    padding-left: 16px;
    border-left: 1px solid var(--line);
  }

  .page-about .about-scale__tick {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.06em;
    color: var(--muted);
    text-decoration: none;
    transition: color var(--r-fast) var(--ease);
  }

  .page-about .about-scale__tick::before {
    content: "";
    width: 9px;
    height: 9px;
    background: rgba(157, 182, 176, 0.42);
    transform: rotate(45deg);
    transition: background var(--r-base) var(--ease), box-shadow var(--r-base) var(--ease), transform var(--r-base) var(--ease);
  }

  .page-about .about-scale__tick:hover {
    color: var(--cyan);
  }

  .page-about .about-scale__tick[data-active] {
    color: var(--cyan);
  }

  .page-about .about-scale__tick[data-active]::before {
    background: var(--cyan);
    box-shadow: 0 0 0 4px rgba(47, 227, 200, 0.14);
    transform: rotate(45deg) scale(1.18);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-route,
  .page-about .about-route__go,
  .page-about .media-frame img {
    transition: none;
  }
}
</final>
</final>