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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4vw, 56px) var(--edge) clamp(28px, 5vw, 64px);
  background:
    radial-gradient(1100px 520px at 80% -12%, rgba(47, 243, 224, 0.13), transparent 62%),
    radial-gradient(780px 420px at 4% 112%, rgba(122, 92, 255, 0.16), transparent 60%),
    var(--night);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 5px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 48%, var(--magenta));
  opacity: 0.75;
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(22px, 3.4vw, 44px);
  align-items: center;
}

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

.page-about .crumbs {
  margin-bottom: 16px;
}

.page-about .about-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 5.2vw, 58px);
  line-height: 1.18;
  letter-spacing: 0.01em;
  color: var(--mist);
  text-shadow:
    1px 0 0 rgba(47, 243, 224, 0.55),
    0 0 22px rgba(47, 243, 224, 0.24);
}

.page-about .about-hero__lede {
  margin: 0 0 26px;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--steel);
}

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

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

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(28px, 4vw, 48px);
  border: 3px solid var(--line);
  background: var(--line);
}

.page-about .about-hero__stats .stat {
  padding: 16px 18px;
  background: var(--panel);
}

.page-about .about-hero__stats .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  color: var(--amber);
  text-shadow: 0 0 14px rgba(255, 194, 75, 0.35);
}

.page-about .about-hero__stats .stat__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--steel);
}

/* ---------- 通用章节 ---------- */
.page-about .section {
  position: relative;
  padding: clamp(40px, 6vw, 78px) var(--edge);
  border-top: 3px solid var(--line);
}

.page-about .section__head {
  margin: 0 0 clamp(24px, 3.4vw, 40px);
  max-width: 74ch;
}

.page-about .section__num {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink);
  background: var(--amber);
}

.page-about .section__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 2.9vw, 32px);
  line-height: 1.3;
  color: var(--mist);
}

.page-about .section__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .section__anno {
  display: none;
}

.page-about a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 224, 0.4);
}

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

/* ---------- 时间线 ---------- */
.page-about .about-tl__media {
  margin: 0 0 clamp(26px, 4vw, 44px);
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 14px;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 12px;
  bottom: 12px;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), var(--violet) 55%, var(--magenta));
  opacity: 0.6;
}

.page-about .tl__item {
  position: relative;
  padding-left: 38px;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 18px;
  width: 17px;
  height: 17px;
  border: 3px solid var(--cyan);
  border-radius: 50%;
  background: var(--night);
  box-shadow: 0 0 12px rgba(47, 243, 224, 0.5);
}

.page-about .tl__box {
  border: 3px solid var(--line);
  background: var(--panel);
  box-shadow: 6px 6px 0 rgba(5, 7, 15, 0.7);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about .tl__box[open] {
  border-color: rgba(47, 243, 224, 0.6);
}

.page-about .tl__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

.page-about .tl__sum::-webkit-details-marker {
  display: none;
}

.page-about .tl__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
}

.page-about .tl__box[open] .tl__sum::after {
  content: "−";
  color: var(--magenta);
}

.page-about .tl__year {
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.06em;
  color: var(--amber);
  text-shadow: 0 0 12px rgba(255, 194, 75, 0.4);
}

.page-about .tl__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: var(--mist);
}

.page-about .tl__text {
  margin: 0;
  padding: 0 16px 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-tl__foot {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 14px;
  color: var(--steel);
}

/* ---------- 每周节奏 ---------- */
.page-about .about-daily {
  gap: clamp(14px, 2vw, 22px);
}

.page-about .about-daily__card {
  position: relative;
  padding: 22px 20px 20px;
  border-left: 4px solid var(--cyan);
}

.page-about .about-daily__card:nth-child(2) {
  border-left-color: var(--magenta);
}

.page-about .about-daily__card:nth-child(3) {
  border-left-color: var(--violet);
}

.page-about .about-daily__card:nth-child(4) {
  border-left-color: var(--amber);
}

.page-about .about-daily__card .card__text {
  margin: 10px 0 12px;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  gap: clamp(14px, 2vw, 22px);
}

.page-about .about-team__card {
  padding: 20px;
  border: 3px solid var(--line);
  background: var(--panel);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-about .about-team__card:hover,
.page-about .about-team__card:focus-within {
  transform: translateY(-2px);
  box-shadow: 8px 10px 0 rgba(5, 7, 15, 0.7);
}

.page-about .about-team__card--a:hover {
  border-color: var(--cyan);
}

.page-about .about-team__card--b:hover {
  border-color: var(--magenta);
}

.page-about .about-team__card--c:hover {
  border-color: var(--violet);
}

.page-about .about-team__card--d:hover {
  border-color: var(--amber);
}

.page-about .about-team__head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__glyph {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  font-size: 18px;
  color: var(--cyan);
  border: 3px solid var(--line);
  background: var(--night);
}

.page-about .about-team__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .about-team__count {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--amber);
}

.page-about .about-team__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-about .about-team__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--steel);
}

.page-about .about-team__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(47, 243, 224, 0.6);
}

/* ---------- 五步流程 ---------- */
.page-about .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: flowstep;
}

.page-about .flow__step {
  position: relative;
  padding: 18px 18px 18px 62px;
  border: 3px solid var(--line);
  background: var(--panel);
}

.page-about .flow__no {
  position: absolute;
  left: 14px;
  top: 18px;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  background: var(--amber);
}

.page-about .flow__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .flow__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

.page-about .about-flow__link {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 14px;
  color: var(--steel);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  display: grid;
  gap: clamp(24px, 3.6vw, 44px);
}

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

.page-about .about-partners__row {
  display: grid;
  gap: 8px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-partners__row p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-about .about-partners__row .tag {
  justify-self: start;
}

.page-about .about-partners__media {
  margin: 0;
  min-width: 0;
}

/* ---------- 本地化 ---------- */
.page-about .about-local__cities {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-local__cards {
  gap: clamp(14px, 2vw, 22px);
}

.page-about .about-local__card {
  padding: 22px 20px;
  border-top: 4px solid var(--cyan);
}

.page-about .about-local__card .card__text {
  margin: 10px 0 0;
}

/* ---------- 收尾行动 ---------- */
.page-about .about-cta {
  margin-top: clamp(28px, 4vw, 48px);
  padding: clamp(22px, 3vw, 34px);
  border: 3px solid var(--line);
  background:
    linear-gradient(120deg, rgba(255, 61, 139, 0.12), rgba(47, 243, 224, 0.1)),
    var(--panel);
}

.page-about .about-cta__text {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 700;
  color: var(--mist);
}

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

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

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

@media (min-width: 960px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  }

  .page-about .flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .flow__step {
    padding: 56px 16px 18px;
  }

  .page-about .flow__no {
    left: 16px;
    top: 16px;
  }

  .page-about .about-partners {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }
}

@media (min-width: 1240px) {
  .page-about .section--anno {
    padding-left: 40px;
  }

  .page-about .section__anno {
    display: block;
    position: absolute;
    right: 10px;
    top: clamp(40px, 6vw, 78px);
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.26em;
    color: var(--steel);
    opacity: 0.75;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__card,
  .page-about .tl__box {
    transition: none;
  }
}