/* =========================================================
   page-about · 品牌自述
   ========================================================= */
.page-about {
  --about-shot: 0 26px 62px -46px rgba(11, 42, 34, 0.7);
  --about-gap: clamp(24px, 3.4vw, 52px);
  background: var(--canvas);
  color: var(--graphite);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  border-bottom: 1px solid var(--line-soft);
  padding: 14px 0;
  background: var(--canvas);
}

/* ---------- 刊头 ---------- */
.page-about .about-masthead {
  position: relative;
  background: var(--ink);
  color: var(--canvas);
  padding: clamp(42px, 6vw, 80px) 0 clamp(76px, 10vw, 136px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 54px), 0 100%);
  overflow: hidden;
}

.page-about .about-masthead::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(214, 255, 63, 0.16), transparent 68%);
  pointer-events: none;
}

.page-about .about-masthead__inner {
  position: relative;
  text-align: center;
}

.page-about .about-masthead__eyebrow {
  color: var(--flash);
  letter-spacing: 0.24em;
}

.page-about .about-masthead__title {
  margin: 16px 0 0;
  font-size: clamp(2.5rem, 1.3rem + 4.8vw, 4.5rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: 0.06em;
}

.page-about .about-masthead__lead {
  max-width: 36rem;
  margin: clamp(20px, 3vw, 30px) auto 0;
  color: var(--on-dark);
  font-size: var(--fs-body);
  line-height: 1.85;
}

.page-about .about-masthead__facts {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px clamp(20px, 4vw, 54px);
  max-width: 56rem;
  margin: clamp(30px, 5vw, 52px) auto 0;
  padding: clamp(18px, 3vw, 28px) 0 0;
  list-style: none;
  border-top: 1px solid var(--line-dark);
  color: var(--on-dark-dim);
  font-size: var(--fs-small);
}

.page-about .about-masthead__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-about .about-masthead__facts .num {
  color: var(--flash);
  font-size: 1.35rem;
  font-weight: 700;
}

/* ---------- 起点 ---------- */
.page-about .about-origin {
  padding: clamp(52px, 8vw, 104px) 0 0;
}

.page-about .about-origin__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-origin__figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  background: var(--canvas-2);
  box-shadow: var(--about-shot);
}

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

.page-about .about-origin__figure .figure__cap {
  display: block;
  padding: 10px 12px;
  border-top: 1px solid var(--line-soft);
  color: var(--line);
  font-size: var(--fs-micro);
  letter-spacing: 0.06em;
}

.page-about .about-origin__body .section-head__title,
.page-about .about-process__body .section-head__title,
.page-about .about-coop__intro .section-head__title,
.page-about .about-vision__body .section-head__title,
.page-about .about-awards__body .section-head__title {
  margin: 10px 0 0;
}

.page-about .about-origin__body .prose,
.page-about .about-coop__intro .prose {
  margin-top: clamp(16px, 2.4vw, 24px);
}

/* ---------- 团队三条线 ---------- */
.page-about .about-team {
  position: relative;
  margin-top: clamp(60px, 9vw, 124px);
  padding: clamp(52px, 7vw, 100px) 0;
  background: var(--ink);
  color: var(--canvas);
}

.page-about .about-team::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--flash) 0%, rgba(214, 255, 63, 0) 64%);
  transform: skewY(-0.7deg);
  transform-origin: left center;
}

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

.page-about .about-team .section-head__title {
  color: var(--canvas);
}

.page-about .about-team .section-head__note {
  color: var(--on-dark);
}

.page-about .about-team__grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(28px, 4vw, 48px);
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
}

.page-about .about-team__panel {
  background: var(--ink);
  padding: clamp(24px, 3vw, 36px);
  transition: background var(--ease);
}

.page-about .about-team__panel:hover {
  background: var(--ink-2);
}

.page-about .about-team__no {
  display: inline-block;
  color: var(--flash);
  font-size: var(--fs-micro);
  letter-spacing: 0.14em;
}

.page-about .about-team__name {
  margin: 12px 0 0;
  font-size: var(--fs-h3);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--canvas);
}

.page-about .about-team__text {
  margin: 12px 0 0;
  color: var(--on-dark);
  font-size: var(--fs-small);
  line-height: 1.8;
}

.page-about .about-team__list {
  margin: 20px 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--line-dark);
}

.page-about .about-team__list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 9px;
  color: var(--on-dark-dim);
  font-size: var(--fs-micro);
  line-height: 1.65;
}

.page-about .about-team__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 1px;
  background: var(--flash);
}

/* ---------- 四道工序 ---------- */
.page-about .about-process__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-steps {
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  padding: clamp(16px, 2.4vw, 24px) 0;
  border-bottom: 1px solid var(--line-soft);
  transition: border-color var(--ease);
}

.page-about .about-steps__item:hover {
  border-color: var(--flash);
}

.page-about .about-steps__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 26px;
  padding: 0 8px;
  background: var(--flash);
  color: var(--ink);
  font-size: var(--fs-small);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-about .about-steps__title {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-steps__text {
  margin: 6px 0 0;
  color: var(--graphite);
  font-size: var(--fs-small);
  line-height: 1.75;
}

.page-about .about-process__figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  background: var(--canvas-2);
  box-shadow: var(--about-shot);
}

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

.page-about .about-process__figure .figure__cap {
  display: block;
  padding: 10px 12px;
  border-top: 1px solid var(--line-soft);
  color: var(--line);
  font-size: var(--fs-micro);
  letter-spacing: 0.06em;
}

/* ---------- 合作生态 ---------- */
.page-about .about-coop__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-coop__stat {
  padding: clamp(18px, 2.4vw, 24px) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-coop__stat:first-child {
  border-top: 1px solid var(--line-soft);
}

.page-about .about-coop__num {
  display: inline-block;
  min-width: 2.2em;
  color: var(--ink);
  font-size: clamp(2rem, 1.4rem + 2vw, 2.75rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.01em;
}

.page-about .about-coop__label {
  margin-left: 12px;
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-coop__desc {
  margin: 10px 0 0;
  color: var(--graphite);
  font-size: var(--fs-small);
  line-height: 1.7;
}

.page-about .about-coop__bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 88px;
  margin-top: clamp(22px, 3vw, 32px);
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-coop__bar {
  flex: 1 1 0;
  background: var(--flash);
  opacity: 0.34;
  transition: opacity var(--ease-slow), background var(--ease-slow);
}

.page-about .about-coop__bar:nth-child(1) { height: 62%; }
.page-about .about-coop__bar:nth-child(2) { height: 40%; }
.page-about .about-coop__bar:nth-child(3) { height: 78%; }
.page-about .about-coop__bar:nth-child(4) { height: 52%; }
.page-about .about-coop__bar:nth-child(5) { height: 88%; }
.page-about .about-coop__bar:nth-child(6) { height: 46%; }
.page-about .about-coop__bar:nth-child(7) { height: 70%; }
.page-about .about-coop__bar:nth-child(8) { height: 58%; }
.page-about .about-coop__bar:nth-child(9) { height: 92%; }
.page-about .about-coop__bar:nth-child(10) { height: 48%; }
.page-about .about-coop__bar:nth-child(11) { height: 66%; }

.page-about .about-coop__bars:hover .about-coop__bar {
  opacity: 0.66;
}

.page-about .about-coop__bar:hover {
  opacity: 1;
  background: var(--ink);
}

/* ---------- 版本时间轴 ---------- */
.page-about .about-timeline {
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(30px, 4.2vw, 48px) clamp(30px, 4.6vw, 46px);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 12px;
  bottom: 0;
  width: 1px;
  background: var(--line-soft);
}

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

.page-about .about-timeline__item:last-child::before {
  background: linear-gradient(180deg, var(--line-soft), rgba(111, 138, 128, 0));
}

.page-about .about-timeline__dot {
  position: absolute;
  left: 0;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--line-soft);
  transition: background var(--ease), transform var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__dot,
.page-about .about-timeline__item--now .about-timeline__dot {
  background: var(--flash);
}

.page-about .about-timeline__item:hover .about-timeline__dot {
  transform: scale(1.35);
}

.page-about .about-timeline__year {
  margin: 0;
  color: var(--ink);
  font-size: var(--fs-small);
  font-weight: 700;
  letter-spacing: 0.14em;
}

.page-about .about-timeline__title {
  margin: 6px 0 0;
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-timeline__text {
  max-width: 44rem;
  margin: 8px 0 0;
  color: var(--graphite);
  font-size: var(--fs-small);
  line-height: 1.8;
}

.page-about .about-timeline__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__tags .tag {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--flash);
  color: var(--ink);
  background: var(--flash-soft);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.04em;
}

/* ---------- 赛道视野 ---------- */
.page-about .about-vision {
  padding: clamp(56px, 8vw, 108px) 0 0;
}

.page-about .about-vision__figure {
  position: relative;
  margin: 0 0 clamp(28px, 4vw, 48px);
  background: var(--canvas-2);
  overflow: hidden;
}

.page-about .about-vision__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: cover;
}

.page-about .about-vision__figure .figure__cap {
  position: absolute;
  right: 0;
  bottom: 0;
  padding: 8px 14px;
  background: var(--ink);
  color: var(--on-dark);
  font-size: var(--fs-micro);
  letter-spacing: 0.06em;
}

.page-about .about-vision__cols {
  display: grid;
  gap: clamp(20px, 3vw, 44px);
  margin-top: clamp(16px, 2.4vw, 26px);
}

/* ---------- 收录 ---------- */
.page-about .about-awards__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-awards__stat {
  padding-bottom: 18px;
  border-bottom: 3px solid var(--flash);
}

.page-about .about-awards__num {
  display: block;
  color: var(--ink);
  font-size: clamp(3.4rem, 2rem + 5.4vw, 6rem);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.02em;
}

.page-about .about-awards__label {
  margin: 12px 0 0;
  color: var(--graphite);
  font-size: var(--fs-small);
  line-height: 1.7;
}

.page-about .about-awards__text {
  max-width: 40rem;
  margin: clamp(14px, 2vw, 20px) 0 0;
  color: var(--graphite);
  font-size: var(--fs-body);
  line-height: 1.85;
}

/* ---------- 结尾引导 ---------- */
.page-about .about-next {
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-about .about-next__panel {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
  padding: clamp(30px, 4.4vw, 56px);
  background: var(--ink);
  color: var(--canvas);
  clip-path: polygon(0 26px, 100% 0, 100% 100%, 0 100%);
}

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

.page-about .about-next__title {
  margin: 12px 0 0;
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--canvas);
}

.page-about .about-next__text {
  max-width: 34rem;
  margin: 14px 0 0;
  color: var(--on-dark);
  font-size: var(--fs-small);
  line-height: 1.8;
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-about .about-next__totop {
  margin: clamp(24px, 3vw, 34px) 0 0;
  text-align: right;
}

.page-about .about-totop {
  display: inline-block;
  padding-bottom: 2px;
  color: var(--ink);
  font-size: var(--fs-small);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--ease), color var(--ease);
}

.page-about .about-totop:hover {
  color: var(--ink);
  border-color: var(--flash);
  border-bottom-width: 2px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-awards__grid {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: clamp(36px, 5vw, 74px);
  }

  .page-about .about-origin__figure {
    margin-top: clamp(10px, 2vw, 32px);
  }

  .page-about .about-process__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .page-about .about-coop__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .about-timeline {
    padding-left: clamp(0px, 1.6vw, 22px);
  }

  .page-about .about-next__panel {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: center;
  }

  .page-about .about-next__links {
    flex-direction: column;
    align-items: flex-end;
  }
}

@media (min-width: 1080px) {
  .page-about .about-coop__bars {
    height: 108px;
  }
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 420px) {
  .page-about .about-masthead__facts {
    gap: 10px 18px;
    font-size: var(--fs-micro);
  }

  .page-about .about-masthead__facts .num {
    font-size: 1.15rem;
  }

  .page-about .about-steps__item {
    gap: 2px 12px;
  }

  .page-about .about-coop__num {
    display: block;
    min-width: 0;
  }

  .page-about .about-coop__label {
    display: block;
    margin: 4px 0 0;
  }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0.01ms !important;
  }
}
<<<END>>>