.page-about {
  --about-slice: -0.6deg;
  padding-bottom: clamp(40px, 8vw, 88px);
}

.page-about .breadcrumb {
  margin-top: clamp(16px, 3vw, 28px);
}

/* ---- 首屏 ---- */
.page-about .about-intro {
  padding: clamp(24px, 5vw, 52px) 0 clamp(10px, 2vw, 18px);
}

.page-about .about-intro__eyebrow {
  font-family: var(--font-meta);
  font-size: 14px;
  letter-spacing: .12em;
  color: var(--cyan-deep);
  margin-bottom: 18px;
}

.page-about .about-intro__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--paper);
  max-width: 18ch;
}

.page-about .about-intro__lede {
  margin-top: 20px;
  font-family: var(--font-body);
  font-size: clamp(16px, 1.9vw, 17px);
  line-height: 1.85;
  color: var(--mist);
  max-width: 38em;
}

.page-about .about-figures {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-figures .stat {
  background: var(--ink-800);
  padding: 18px 16px 20px;
  min-width: 0;
}

.page-about .about-figures .stat__value {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(36px, 6.4vw, 60px);
  line-height: 1;
  letter-spacing: .01em;
  color: var(--cyan);
}

.page-about .about-figures .stat__unit {
  font-size: .42em;
  margin-left: 4px;
  color: var(--cyan-deep);
}

.page-about .about-figures .stat__label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-meta);
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--mist);
}

/* ---- 章节骨架 ---- */
.page-about .about-chapter {
  position: relative;
  padding: clamp(34px, 6vw, 68px) 0;
}

.page-about .about-chapter::before {
  content: "";
  position: absolute;
  left: var(--gutter);
  right: var(--gutter);
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan-deep), rgba(15, 185, 166, 0) 64%);
  transform: rotate(var(--about-slice));
  transform-origin: left center;
  opacity: .75;
}

.page-about .about-chapter__inner {
  display: grid;
  gap: 12px;
}

.page-about .about-chapter__year {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(54px, 13vw, 118px);
  line-height: .88;
  letter-spacing: -.02em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--cyan-deep);
  margin: 0;
}

.page-about .about-chapter__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.1vw, 34px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--paper);
  margin-bottom: 14px;
}

.page-about .about-chapter__intro {
  font-family: var(--font-body);
  font-size: clamp(16px, 1.9vw, 17px);
  line-height: 1.8;
  color: var(--mist);
  max-width: 38em;
}

.page-about .about-chapter__main {
  min-width: 0;
}

.page-about .prose p {
  font-family: var(--font-body);
  font-size: clamp(16px, 1.9vw, 17px);
  line-height: 1.85;
  color: var(--paper);
  max-width: 38em;
}

.page-about .prose p + p {
  margin-top: 14px;
}

/* ---- 图片 ---- */
.page-about .media-frame {
  margin: clamp(22px, 4vw, 38px) 0 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow: hidden;
}

.page-about .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .media-frame__cap {
  display: block;
  padding: 12px 16px 14px;
  font-family: var(--font-meta);
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--line);
}

/* ---- 时间线 ---- */
.page-about .about-path {
  padding-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-timeline {
  list-style: none;
  margin: 0 auto;
  padding: clamp(22px, 4vw, 34px) var(--gutter) clamp(26px, 4vw, 40px);
  display: flex;
  gap: 16px;
  max-width: var(--shell);
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-stage {
  position: relative;
  flex: 0 0 min(282px, 78vw);
  scroll-snap-align: start;
  padding: 22px 18px 24px;
  background: var(--ink-800);
  border: 1px solid var(--line);
}

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  transform: rotate(var(--about-slice));
  transform-origin: left center;
  background: var(--ink-700);
}

.page-about .about-stage:nth-child(2)::before {
  background: linear-gradient(90deg, var(--ink-700), var(--cyan-deep));
}

.page-about .about-stage:nth-child(3)::before {
  background: linear-gradient(90deg, var(--cyan-deep), var(--cyan));
}

.page-about .about-stage:nth-child(4)::before {
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-about .about-stage__year {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 30px;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--mist);
  margin-bottom: 12px;
}

.page-about .about-stage:nth-child(3) .about-stage__year {
  color: var(--cyan-deep);
}

.page-about .about-stage:nth-child(4) .about-stage__year {
  color: var(--orange-soft);
}

.page-about .about-stage__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--paper);
  margin-bottom: 10px;
}

.page-about .about-stage__text {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---- 团队 ---- */
.page-about .about-team__grid {
  display: grid;
  gap: 28px;
  margin-top: 26px;
}

.page-about .about-ring {
  position: relative;
  width: min(260px, 72vw);
  aspect-ratio: 1 / 1;
  margin-inline: auto;
}

.page-about .about-ring svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.page-about .about-ring__track {
  fill: none;
  stroke: var(--ink-700);
  stroke-width: 14;
}

.page-about .about-ring__seg {
  fill: none;
  stroke-width: 14;
  transform-box: fill-box;
  transform-origin: center;
  transform: rotate(-90deg);
  transition: stroke-width .24s var(--ease);
}

.page-about .about-ring__seg--data { stroke: var(--cyan); }
.page-about .about-ring__seg--edit { stroke: var(--cyan-deep); }
.page-about .about-ring__seg--eng { stroke: var(--orange); }
.page-about .about-ring__seg--ops { stroke: var(--mist); }

.page-about .about-ring__seg:hover {
  stroke-width: 21;
}

.page-about .about-ring__center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.page-about .about-ring__num {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 52px;
  line-height: 1;
  color: var(--paper);
}

.page-about .about-ring__cap {
  margin-top: 4px;
  font-family: var(--font-meta);
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}

.page-about .about-roles__item {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  column-gap: 14px;
  align-items: start;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-roles__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-roles__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 34px;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-roles__name {
  grid-column: 2;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .about-roles__note {
  grid-column: 2;
  margin-top: 4px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---- 收束 ---- */
.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hubei__media {
  margin-top: clamp(26px, 5vw, 46px);
}

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

@media (min-width: 820px) {
  .page-about .about-team__grid {
    grid-template-columns: 260px minmax(0, 1fr);
    align-items: center;
    gap: clamp(32px, 5vw, 56px);
  }

  .page-about .about-ring {
    margin-inline: 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-chapter__inner {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(24px, 4vw, 56px);
  }

  .page-about .about-chapter__main {
    max-width: 62em;
  }

  .page-about .about-stage {
    flex: 1 1 240px;
  }
}

@media (max-width: 520px) {
  .page-about .about-chapter__year {
    -webkit-text-stroke-width: 1px;
  }

  .page-about .media-frame__img {
    aspect-ratio: 4 / 3;
  }
}