.page-about {
  --about-card-bg: linear-gradient(180deg, rgba(20, 24, 29, 0.94), rgba(10, 12, 15, 0.72));
  --about-dot-volt: 0 0 0 4px rgba(34, 224, 214, 0.12);
  --about-dot-turf: 0 0 0 4px rgba(107, 255, 143, 0.12);
}

/* ===== 首屏 ===== */
.page-about .about-hero {
  position: relative;
  padding-block: 36px 64px;
  overflow: hidden;
  background:
    radial-gradient(110% 70% at 8% 0%, rgba(34, 224, 214, 0.10), transparent 58%),
    radial-gradient(80% 60% at 100% 12%, rgba(122, 92, 255, 0.12), transparent 62%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(58vw, 700px);
  height: 100%;
  background: linear-gradient(165deg, rgba(34, 224, 214, 0.14), rgba(122, 92, 255, 0.06) 55%, transparent 82%);
  clip-path: polygon(32% 0, 100% 0, 100% 74%, 0 100%);
  pointer-events: none;
}

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

.page-about .about-hero__grid {
  display: grid;
  gap: 36px;
  margin-top: 26px;
}

.page-about .about-hero__lead h1 {
  margin: 16px 0 0;
}

.page-about .about-hero__intro {
  margin: 22px 0 0;
  max-width: 58ch;
  color: var(--silver-500);
  font-size: 16px;
  line-height: 1.9;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 14px;
  margin-top: 30px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.page-about .about-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-about .about-hero__stats .stat__label {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--silver-500);
}

.page-about .about-hero__stats .stat__value {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  line-height: 1.1;
  color: var(--volt);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  aspect-ratio: 4 / 5;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: linear-gradient(150deg, #14181D, #0A0C0F);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 52%, rgba(10, 12, 15, 0.78));
  pointer-events: none;
}

/* ===== 章节抬头与色带 ===== */
.page-about .band {
  margin-bottom: 40px;
}

.page-about .sec-head {
  margin-bottom: 32px;
}

.page-about .sec-head__num {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--volt);
}

.page-about .sec-head__title {
  margin: 0;
  color: var(--silver-100);
}

.page-about .sec-head__note {
  margin: 12px 0 0;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--silver-500);
}

/* ===== 起点 ===== */
.page-about .about-origin__body {
  display: grid;
  gap: 20px;
  max-width: 740px;
}

.page-about .about-origin__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--silver-100);
}

/* ===== 团队 ===== */
.page-about .about-team__grid {
  display: grid;
  gap: 28px;
  align-items: start;
}

.page-about .about-team__copy {
  display: grid;
  gap: 18px;
}

.page-about .about-team__copy p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--silver-100);
}

.page-about .about-team__visual {
  margin: 0;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(160deg, #14181D, #0A0C0F);
}

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

.page-about .about-team__diagram {
  margin: 40px 0 0;
  padding: 26px 18px 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(20, 24, 29, 0.92), rgba(10, 12, 15, 0.62));
}

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

.page-about .about-team__diagram figcaption {
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--silver-500);
}

/* ===== 数据来源 ===== */
.page-about .about-data__grid {
  display: grid;
  gap: 18px;
}

.page-about .about-data__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: var(--about-card-bg);
}

.page-about .about-data__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--volt), transparent 72%);
}

.page-about .about-data__card:nth-child(2)::before {
  background: linear-gradient(90deg, var(--orange), transparent 72%);
}

.page-about .about-data__card:nth-child(3)::before {
  background: linear-gradient(90deg, var(--violet), transparent 72%);
}

.page-about .about-data__card .card__kicker {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--volt);
}

.page-about .about-data__card:nth-child(2) .card__kicker {
  color: var(--orange);
}

.page-about .about-data__card:nth-child(3) .card__kicker {
  color: var(--violet);
}

.page-about .about-data__card .card__title {
  margin: 0;
  font-size: 19px;
  line-height: 1.5;
  color: var(--silver-100);
}

.page-about .about-data__card .card__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--silver-500);
}

/* ===== 时间轴 ===== */
.page-about .about-timeline__banner {
  margin: 0 0 40px;
  aspect-ratio: 2 / 1;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(120deg, #0A0C0F, #14181D);
}

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

.page-about .about-timeline__index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 34px;
}

.page-about .about-timeline__chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--silver-500);
  text-decoration: none;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-timeline__chip:hover,
.page-about .about-timeline__chip:focus-visible {
  color: var(--abyss);
  background: var(--volt);
  border-color: var(--volt);
}

.page-about .about-timeline__list {
  position: relative;
  display: grid;
  gap: 40px;
  margin: 0;
  padding: 0 0 0 32px;
  list-style: none;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--volt), var(--violet) 55%, var(--turf));
  opacity: 0.7;
}

.page-about .about-timeline__item {
  position: relative;
}

.page-about .about-timeline__dot {
  position: absolute;
  left: -31px;
  top: 8px;
  width: 12px;
  height: 12px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--abyss);
  border: 2px solid var(--volt);
}

.page-about .about-timeline__dot--volt {
  border-color: var(--volt);
  box-shadow: var(--about-dot-volt);
}

.page-about .about-timeline__dot--turf {
  border-color: var(--turf);
  box-shadow: var(--about-dot-turf);
}

.page-about .about-timeline__year {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--volt);
}

.page-about .about-timeline__title {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.5;
  color: var(--silver-100);
}

.page-about .about-timeline__body {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--silver-500);
}

/* ===== 归档方法 ===== */
.page-about .about-method__grid {
  display: grid;
  gap: 36px;
}

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

.page-about .about-method__dim {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(20, 24, 29, 0.62);
}

.page-about .about-method__dim-key {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--volt);
}

.page-about .about-method__dim p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--silver-500);
}

.page-about .about-method__read {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-about .about-method__read p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--silver-100);
}

/* ===== 合作生态 ===== */
.page-about .about-partners__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-partners__card {
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(34, 224, 214, 0.09), transparent 58%),
    var(--graphite);
}

.page-about .about-partners__card .eyebrow {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--volt);
}

.page-about .about-partners__card h3 {
  margin: 0 0 12px;
  font-size: 18px;
  line-height: 1.5;
  color: var(--silver-100);
}

.page-about .about-partners__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--silver-500);
}

.page-about .about-partners__card:nth-child(2) {
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(255, 106, 43, 0.10), transparent 58%),
    var(--graphite);
}

.page-about .about-partners__card:nth-child(2) .eyebrow {
  color: var(--orange);
}

.page-about .about-partners__card:nth-child(3) {
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(122, 92, 255, 0.12), transparent 58%),
    var(--graphite);
}

.page-about .about-partners__card:nth-child(3) .eyebrow {
  color: var(--violet);
}

/* ===== 质量与合规 ===== */
.page-about .about-quality__body {
  display: grid;
  gap: 20px;
}

.page-about .about-quality__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--silver-100);
}

.page-about .about-quality__cta {
  display: grid;
  gap: 18px;
  margin-top: 12px;
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(150deg, rgba(34, 224, 214, 0.10), rgba(122, 92, 255, 0.08));
}

.page-about .about-quality__cta p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--silver-100);
}

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

/* ===== 平板及以上 ===== */
@media (min-width: 760px) {
  .page-about .about-data__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-data__card:nth-child(2) {
    margin-top: 30px;
  }

  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: 128px minmax(0, 1fr);
    grid-template-areas:
      "year title"
      "year body";
    column-gap: 26px;
    align-items: start;
  }

  .page-about .about-timeline__year {
    grid-area: year;
    margin: 2px 0 0;
  }

  .page-about .about-timeline__title {
    grid-area: title;
  }

  .page-about .about-timeline__body {
    grid-area: body;
  }

  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-partners__card:nth-child(2) {
    margin-top: 34px;
  }
}

/* ===== 桌面 ===== */
@media (min-width: 940px) {
  .page-about .about-hero {
    padding-block: 52px 88px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .about-hero__figure {
    aspect-ratio: 4 / 5;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
  }

  .page-about .about-team__diagram {
    padding: 34px 40px 28px;
  }

  .page-about .about-method__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-origin__body,
  .page-about .about-quality__body {
    padding-left: 4px;
  }

  .page-about .about-timeline__list {
    padding-left: 40px;
  }

  .page-about .about-timeline__dot {
    left: -39px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-timeline__list {
    gap: 48px;
  }

  .page-about .about-method__dim {
    padding: 18px 22px;
  }
}

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