/* ============================================================
   品牌与团队 / page-about
   ============================================================ */

.page-about {
  --about-pad: clamp(52px, 8vw, 116px);
  --about-gap: clamp(20px, 3vw, 40px);
  position: relative;
  background: var(--k-night);
  color: var(--k-chalk);
  font-family: var(--k-font-body);
  overflow-x: clip;
}

.page-about :focus-visible {
  outline: 2px solid var(--k-lime);
  outline-offset: 2px;
}

/* ---------- 通用章节骨架 ---------- */

.page-about .k-section {
  border-top: 1px solid var(--k-line);
  padding-block: var(--about-pad);
}

.page-about .k-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 16px;
  align-items: start;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-about .k-num {
  font-family: var(--k-font-mono);
  font-weight: 700;
  font-size: clamp(1.4rem, 4vw, 2.6rem);
  line-height: 1;
  color: var(--k-signal);
  font-variant-numeric: tabular-nums;
}

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

.page-about .k-title {
  margin: 8px 0 0;
  font-family: var(--k-font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 4.4vw, 3.15rem);
  line-height: 1.1;
  letter-spacing: -.01em;
  max-width: 22em;
}

.page-about .k-lead {
  margin: 14px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--k-gray);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--k-line);
  background:
    radial-gradient(120% 88% at 90% 2%, rgba(255, 74, 23, .18), transparent 58%),
    radial-gradient(90% 72% at 2% 98%, rgba(23, 227, 210, .11), transparent 62%),
    var(--k-night);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  top: 8%;
  width: min(44vw, 520px);
  height: clamp(150px, 30vh, 300px);
  background: linear-gradient(104deg, rgba(255, 74, 23, .22), rgba(216, 32, 12, 0) 72%);
  transform: skewY(-6deg);
  pointer-events: none;
}

.page-about .about-hero__wrap {
  position: relative;
  z-index: 1;
  padding-block: clamp(32px, 6vw, 64px) clamp(48px, 8vw, 92px);
}

.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--k-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--k-gray);
}

.page-about .about-crumb__link {
  color: var(--k-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(23, 227, 210, .45);
  padding-bottom: 1px;
}

.page-about .about-crumb__link:hover {
  color: var(--k-chalk);
  border-bottom-color: var(--k-signal);
}

.page-about .about-crumb__here {
  color: var(--k-gray);
}

.page-about .about-hero__eyebrow {
  margin-top: clamp(26px, 5vw, 54px);
}

.page-about .about-hero__title {
  margin: 18px 0 0;
  font-family: var(--k-font-display);
  font-weight: 200;
  font-size: clamp(2.6rem, 9vw, 7.4rem);
  line-height: .95;
  letter-spacing: -.02em;
  max-width: 12em;
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--k-signal);
  border-bottom: 3px solid var(--k-cyan);
  padding-bottom: .04em;
}

.page-about .about-hero__lead {
  margin: clamp(20px, 3vw, 34px) 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--k-chalk);
  opacity: .9;
}

.page-about .about-hero__metrics {
  list-style: none;
  margin: clamp(30px, 5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--k-line);
  border: 1px solid var(--k-line);
}

.page-about .about-hero__metric {
  background: var(--k-night-2);
  padding: 18px 16px 20px;
  min-width: 0;
}

.page-about .about-hero__metricnum {
  display: block;
  font-family: var(--k-font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.4vw, 2.3rem);
  line-height: 1;
  color: var(--k-lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__metricunit {
  font-size: .72rem;
  margin-left: 3px;
  color: var(--k-gray);
}

.page-about .about-hero__metriccap {
  display: block;
  margin-top: 10px;
  font-family: var(--k-font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--k-gray);
}

/* ---------- 01 品牌主张 ---------- */

.page-about .about-creed__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-creed__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  padding: 24px 0;
  border-top: 1px solid var(--k-line);
}

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

.page-about .about-creed__num {
  display: block;
  font-family: var(--k-font-mono);
  font-weight: 700;
  font-size: clamp(2.4rem, 6.5vw, 4.2rem);
  line-height: .95;
  color: var(--k-lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-creed__unit {
  display: block;
  margin-top: 8px;
  font-family: var(--k-font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--k-gray);
}

.page-about .about-creed__name {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 500;
  color: var(--k-chalk);
}

.page-about .about-creed__copy p {
  margin: 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--k-gray);
}

.page-about .about-hit {
  color: var(--k-lime);
  font-weight: 600;
}

/* ---------- 02 团队分工 ---------- */

.page-about .about-team__matrix {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--k-line);
  border: 1px solid var(--k-line);
}

.page-about .about-team__cell {
  background: var(--k-night-2);
  padding: clamp(20px, 3vw, 34px);
  min-width: 0;
  transition: background .18s var(--k-ease);
}

.page-about .about-team__cell:hover {
  background: #16324a;
}

.page-about .about-team__num {
  display: block;
  font-family: var(--k-font-mono);
  font-weight: 700;
  font-size: clamp(2.5rem, 7vw, 4.4rem);
  line-height: .9;
  color: var(--k-chalk);
  font-variant-numeric: tabular-nums;
}

.page-about .about-team__num::after {
  content: "";
  display: block;
  width: 46px;
  height: 3px;
  margin-top: 14px;
  background: var(--k-signal);
}

.page-about .about-team__role {
  margin: 16px 0 10px;
  font-family: var(--k-font-display);
  font-weight: 400;
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  color: var(--k-chalk);
}

.page-about .about-team__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--k-gray);
}

.page-about .about-team__lower {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  margin-top: var(--about-gap);
  align-items: start;
}

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

/* ---------- 通用图片容器 ---------- */

.page-about .about-media {
  position: relative;
  margin: 0;
  min-width: 0;
  border: 1px solid var(--k-line);
  background: var(--k-night-2);
}

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

.page-about .about-media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 5px 10px;
  font-family: var(--k-font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--k-chalk);
  background: rgba(7, 23, 38, .82);
  border-left: 2px solid var(--k-signal);
}

/* ---------- 折叠面板（页内配色） ---------- */

.page-about .k-fold {
  border: 1px solid var(--k-line);
  background: var(--k-night-2);
}

.page-about .k-fold__btn {
  display: block;
  width: 100%;
  padding: 18px 20px;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  color: var(--k-chalk);
  font-family: var(--k-font-mono);
  font-size: 13px;
  letter-spacing: .08em;
}

.page-about .k-fold__btn::after {
  content: "+";
  float: right;
  color: var(--k-signal);
  font-weight: 700;
}

.page-about .k-fold__btn[aria-expanded="true"]::after {
  content: "–";
}

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

.page-about .k-fold__body {
  padding: 0 20px 20px;
}

.page-about .k-fold__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--k-gray);
}

/* ---------- 03 发展节点 ---------- */

.page-about .about-nodes__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
  position: relative;
}

.page-about .about-nodes__list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--k-cyan), var(--k-signal) 52%, var(--k-line));
  opacity: .85;
}

.page-about .about-nodes__item {
  position: relative;
  padding-bottom: clamp(26px, 4vw, 44px);
}

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

.page-about .about-nodes__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 7px;
  width: 11px;
  height: 11px;
  background: var(--k-night);
  border: 1px solid var(--k-cyan);
  transform: rotate(45deg);
  transition: background .18s var(--k-ease), border-color .18s var(--k-ease);
}

.page-about .about-nodes__item:hover::before {
  background: var(--k-signal);
  border-color: var(--k-signal);
}

.page-about .about-nodes__year {
  display: inline-block;
  font-family: var(--k-font-mono);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.4vw, 1.5rem);
  letter-spacing: .06em;
  color: var(--k-lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-nodes__title {
  margin: 6px 0 0;
  font-family: var(--k-font-display);
  font-weight: 400;
  font-size: clamp(1.15rem, 2.6vw, 1.6rem);
  line-height: 1.2;
  color: var(--k-chalk);
}

.page-about .about-nodes__text {
  margin: 8px 0 0;
  max-width: 44em;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--k-gray);
}

.page-about .about-nodes__item:hover .about-nodes__title {
  color: var(--k-cyan);
}

/* ---------- 04 协作生态 ---------- */

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

.page-about .about-eco__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-eco__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0;
  border-top: 1px solid var(--k-line);
}

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

.page-about .about-eco__num {
  font-family: var(--k-font-mono);
  font-weight: 700;
  font-size: clamp(1.8rem, 4.6vw, 2.6rem);
  line-height: .9;
  color: var(--k-amber);
  font-variant-numeric: tabular-nums;
}

.page-about .about-eco__name {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--k-chalk);
}

.page-about .about-eco__body p {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--k-gray);
}

/* ---------- 05 工作方式与响应 ---------- */

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

.page-about .about-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-flow__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--k-line);
}

.page-about .about-flow__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-flow__idx {
  font-family: var(--k-font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--k-signal);
  padding-top: 4px;
}

.page-about .about-flow__name {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--k-chalk);
}

.page-about .about-flow__item p {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--k-gray);
}

.page-about .about-flow__item p {
  overflow-wrap: anywhere;
}

/* ---------- 收尾行动区 ---------- */

.page-about .about-next {
  border-top: 1px solid var(--k-line);
  border-bottom: 1px solid var(--k-line);
  background:
    linear-gradient(102deg, rgba(255, 74, 23, .2), rgba(7, 23, 38, 0) 62%),
    var(--k-night-2);
}

.page-about .about-next__wrap {
  padding-block: clamp(40px, 6vw, 76px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: center;
}

.page-about .about-next__title {
  margin: 0;
  font-family: var(--k-font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  line-height: 1.1;
  color: var(--k-chalk);
}

.page-about .about-next__text {
  margin: 12px 0 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--k-gray);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .about-next__btn {
  white-space: nowrap;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-hero__metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-creed__item {
    grid-template-columns: minmax(150px, 220px) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
    padding: 30px 0;
  }

  .page-about .about-nodes__list {
    padding-left: 44px;
  }

  .page-about .about-nodes__item {
    display: grid;
    grid-template-columns: minmax(84px, 120px) minmax(0, 1fr);
    column-gap: 26px;
  }

  .page-about .about-nodes__year {
    grid-row: 1 / span 2;
    padding-top: 2px;
  }

  .page-about .about-nodes__title {
    margin-top: 0;
  }

  .page-about .about-nodes__text {
    grid-column: 2;
  }

  .page-about .about-nodes__item::before {
    left: -44px;
    top: 9px;
  }

  .page-about .about-nodes__list::before {
    left: 5px;
  }
}

@media (min-width: 900px) {
  .page-about .about-team__matrix {
    grid-template-columns: 5fr 4fr 3fr;
  }

  .page-about .about-team__lower {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .about-eco__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .about-flow__grid {
    grid-template-columns: 5fr 7fr;
  }

  .page-about .about-next__wrap {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    justify-items: end;
  }

  .page-about .about-next__copy {
    justify-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__cell,
  .page-about .about-nodes__item::before {
    transition: none;
  }
}
<<<END>>>