.page-about {
  --about-idx: 208px;
  --about-gap: clamp(20px, 3.2vw, 44px);
}

.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-about .filter-item.is-hidden,
.page-about .filter-item[hidden] {
  display: none;
}

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(24px, 4.5vw, 50px) clamp(34px, 5.5vw, 72px);
}

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

.page-about .about-hero > .blob--neon {
  position: absolute;
  inset-block-start: -150px;
  inset-inline-end: -150px;
  width: min(460px, 74vw);
  height: min(460px, 74vw);
  opacity: .55;
  pointer-events: none;
  z-index: 0;
}

.page-about .crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(16px, 2.5vw, 26px);
  font-size: 13px;
  color: var(--mute);
}

.page-about .crumb a {
  color: var(--mute);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}

.page-about .crumb a:hover,
.page-about .crumb a:focus-visible {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-hero__lead h1 {
  margin: 12px 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.14;
  font-size: clamp(30px, 5.4vw, 58px);
  color: var(--mist);
  max-width: 18ch;
}

.page-about .about-hero__text {
  max-width: 62ch;
  margin: 0 0 clamp(20px, 2.8vw, 30px);
  color: var(--mist);
  line-height: 1.85;
  font-size: clamp(15px, 1.5vw, 17px);
}

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

.page-about .about-hero__card {
  align-self: end;
  padding: clamp(18px, 2.4vw, 26px);
}

.page-about .about-hero__list {
  display: grid;
  gap: 11px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mute);
}

.page-about .about-k {
  min-width: 58px;
  white-space: nowrap;
  color: var(--neon);
  font-weight: 600;
  font-size: 13px;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(10px, 2vw, 18px);
  margin: clamp(26px, 4vw, 46px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stats > li {
  padding: clamp(14px, 2vw, 20px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: linear-gradient(158deg, rgba(11, 29, 46, .92), rgba(6, 19, 31, .6));
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(23px, 3.2vw, 32px);
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--neon);
}

.page-about .about-stat__num--amber {
  color: var(--amber);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 7px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mute);
}

/* ---------- 章节标题 ---------- */
.page-about .about-head {
  max-width: 72ch;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .about-head h2,
.page-about .about-shift__intro h2,
.page-about .about-eco__text h2,
.page-about .about-local__text h2 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -.015em;
  line-height: 1.22;
  font-size: clamp(25px, 4vw, 38px);
  color: var(--mist);
}

.page-about .about-head__note {
  margin: 0;
  max-width: 66ch;
  color: var(--mute);
  line-height: 1.85;
  font-size: 15px;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline__media {
  margin: 0 0 clamp(24px, 3.4vw, 40px);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}

.page-about .about-timeline__media img {
  width: 100%;
  object-fit: cover;
}

.page-about .about-timeline__grid {
  display: grid;
  gap: clamp(18px, 2.6vw, 34px);
}

.page-about .about-timeline__switch {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  align-items: center;
  gap: 8px;
  padding: clamp(14px, 2vw, 18px);
  border: 1px dashed var(--line);
  border-radius: var(--radius-sm);
  background: rgba(11, 29, 46, .5);
}

.page-about .about-tl {
  position: relative;
  margin: 0;
  padding: 0 0 0 24px;
  list-style: none;
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--neon), var(--line) 62%, transparent);
  opacity: .5;
}

.page-about .about-tl__node {
  position: relative;
  display: grid;
  gap: clamp(10px, 1.6vw, 18px);
  padding: clamp(16px, 2.2vw, 24px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(152deg, rgba(11, 29, 46, .94), rgba(6, 19, 31, .72));
  transition: border-color .22s ease, transform .22s ease;
}

.page-about .about-tl__node:hover {
  border-color: rgba(38, 245, 208, .42);
  transform: translateY(-2px);
}

.page-about .about-tl__node::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 26px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 0 4px rgba(38, 245, 208, .14);
}

.page-about .about-tl__mark {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-about .about-tl__year {
  font-size: clamp(21px, 2.6vw, 28px);
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--neon);
  line-height: 1;
}

.page-about .about-tl__text h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.4;
  color: var(--mist);
}

.page-about .about-tl__text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mute);
}

.page-about .about-tl__text p + p {
  margin-top: 10px;
}

/* ---------- 数据编辑 ---------- */
.page-about .about-shift {
  background: radial-gradient(120% 90% at 0% 26%, rgba(53, 82, 107, .28), transparent 62%);
}

.page-about .about-shift__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-shift__intro p {
  margin: 0 0 14px;
  max-width: 60ch;
  color: var(--mist);
  line-height: 1.85;
  font-size: 15px;
}

.page-about .about-shift__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin: 24px 0 0;
}

.page-about .about-shift__facts > div {
  padding: 14px 16px;
  border-left: 2px solid var(--neon);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(11, 29, 46, .72);
}

.page-about .about-shift__facts dt {
  margin: 0 0 5px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.15;
  color: var(--lime);
}

.page-about .about-shift__facts dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mute);
}

.page-about .about-shift__link {
  margin: 22px 0 0;
}

.page-about .about-shift__link a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(38, 245, 208, .4);
  padding-bottom: 2px;
  font-size: 15px;
  transition: border-color .2s ease;
}

.page-about .about-shift__link a:hover {
  border-bottom-color: var(--neon);
}

.page-about .about-shift__media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}

.page-about .about-shift__media img {
  width: 100%;
  object-fit: cover;
}

/* ---------- 团队 ---------- */
.page-about .about-team__switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-about .about-team__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(12px, 2vw, 18px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__card {
  display: grid;
  align-content: start;
  gap: 8px;
  padding: clamp(18px, 2.4vw, 24px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(11, 29, 46, .92), rgba(6, 19, 31, .66));
  transition: border-color .22s ease;
}

.page-about .about-team__card:hover {
  border-color: rgba(38, 245, 208, .38);
}

.page-about .about-team__count {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(28px, 3.6vw, 38px);
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--neon);
}

.page-about .about-team__count span {
  margin-left: 4px;
  font-size: .44em;
  letter-spacing: 0;
  color: var(--mute);
}

.page-about .about-team__card h3 {
  margin: 2px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--mist);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mute);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  background: radial-gradient(92% 80% at 100% 0%, rgba(38, 245, 208, .07), transparent 58%);
}

.page-about .about-eco__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-eco__text > p {
  margin: 0;
  max-width: 58ch;
  color: var(--mist);
  line-height: 1.85;
  font-size: 15px;
}

.page-about .about-eco__list {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-eco__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mute);
}

.page-about .about-eco__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--neon);
}

.page-about .about-eco__figure {
  margin: 0;
  padding: clamp(14px, 2.4vw, 26px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(11, 29, 46, .88), rgba(6, 19, 31, .7));
}

.page-about .about-eco__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-eco__lines line {
  stroke: var(--line);
  stroke-width: 1.5;
  stroke-dasharray: 4 5;
}

.page-about .about-eco__node circle {
  fill: var(--panel);
  stroke: var(--neon);
  stroke-width: 1.6;
  transition: fill .2s ease, stroke .2s ease;
}

.page-about .about-eco__node:hover circle {
  fill: rgba(38, 245, 208, .14);
  stroke: var(--lime);
}

.page-about .about-eco__node text {
  fill: var(--mist);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  text-anchor: middle;
  pointer-events: none;
}

.page-about .about-eco__core circle {
  fill: rgba(38, 245, 208, .12);
  stroke: var(--neon);
  stroke-width: 2;
}

.page-about .about-eco__core text {
  fill: var(--neon);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  text-anchor: middle;
  letter-spacing: .04em;
}

/* ---------- 福建运营中心 ---------- */
.page-about .about-local__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-local__media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}

.page-about .about-local__media img {
  width: 100%;
  object-fit: cover;
}

.page-about .about-local__text p {
  margin: 0 0 12px;
  max-width: 58ch;
  color: var(--mist);
  line-height: 1.85;
  font-size: 15px;
}

.page-about .about-local__addr {
  display: block;
  margin: 18px 0 12px;
  padding: 14px 18px;
  border-left: 2px solid var(--amber);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(255, 196, 107, .08);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 14px;
  font-style: normal;
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.page-about .about-local__text .note {
  margin: 0 0 20px;
  max-width: 60ch;
  color: var(--mute);
  font-size: 13px;
  line-height: 1.8;
}

/* ---------- 结尾入口 ---------- */
.page-about .about-next__panel {
  padding: clamp(22px, 4vw, 44px);
}

.page-about .about-next__panel h2 {
  margin: 10px 0 clamp(16px, 2.4vw, 24px);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1.26;
  color: var(--mist);
}

.page-about .about-next__links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .about-next__links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(6, 19, 31, .62);
  color: var(--mist);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.6;
  transition: border-color .2s ease, transform .2s ease;
}

.page-about .about-next__links a::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--neon);
  flex: none;
}

.page-about .about-next__links a:hover {
  border-color: var(--neon);
  transform: translateX(2px);
}

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

  .page-about .about-tl__node {
    grid-template-columns: minmax(0, 150px) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-tl__mark {
    flex-direction: column;
    align-items: flex-start;
    gap: 9px;
  }
}

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-about .about-timeline__grid {
    grid-template-columns: var(--about-idx) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-timeline__switch {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
    flex-direction: column;
    align-items: stretch;
  }

  .page-about .about-timeline__switch .chip {
    justify-content: flex-start;
    text-align: left;
  }

  .page-about .about-shift__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-local__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
    align-items: center;
    gap: clamp(28px, 4vw, 56px);
  }

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

@media (min-width: 940px) {
  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
    gap: clamp(28px, 4vw, 60px);
  }
}

@media (min-width: 1080px) {
  .page-about .about-team__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl__node,
  .page-about .about-team__card,
  .page-about .about-next__links a,
  .page-about .about-eco__node circle {
    transition: none;
  }

  .page-about .about-tl__node:hover,
  .page-about .about-next__links a:hover {
    transform: none;
  }
}