.page-about {
  --about-rail: 152px;
  --about-bd: 2px solid var(--line);
  --about-max: 1400px;
  position: relative;
  background-color: var(--ink-900);
  background-image:
    repeating-linear-gradient(90deg, transparent 0 79px, rgba(58, 74, 70, 0.16) 79px 80px);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: clip;
}

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

.page-about .about-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px var(--gutter) 12px;
  border-bottom: var(--about-bd);
}

.page-about .about-toplink {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  border-bottom: var(--about-bd);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(34, 245, 200, 0.12), transparent 62%),
    radial-gradient(90% 70% at 0% 100%, rgba(255, 90, 54, 0.07), transparent 60%);
}

.page-about .about-hero__grid {
  max-width: var(--about-max);
  margin-inline: auto;
  padding: clamp(28px, 5vw, 64px) var(--gutter);
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-hero__panel {
  position: relative;
  min-width: 0;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.3rem, 6.4vw, 4.4rem);
  line-height: 0.96;
  letter-spacing: -0.01em;
  margin: 10px 0 0;
  text-wrap: balance;
}

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

.page-about .about-figures {
  list-style: none;
  margin: clamp(22px, 4vw, 34px) 0 0;
  padding: 16px 0 0;
  border-top: 2px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-figure__v {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(1.4rem, 4.4vw, 2.3rem);
  line-height: 1;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-about .about-figure__k {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-about .about-jump__link {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border: 2px solid var(--line);
  background: var(--graphite);
  color: var(--text);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.06em;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.page-about .about-jump__link:hover,
.page-about .about-jump__link:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .about-jump--tl {
  margin-top: 18px;
  margin-bottom: 6px;
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  min-width: 0;
  border: 3px solid var(--line);
  box-shadow: var(--shadow-hard);
  background: var(--turf);
  overflow: hidden;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .about-hero__badge {
  position: absolute;
  left: 0;
  bottom: 0;
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  background: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero__panel {
    padding-right: 34px;
  }

  .page-about .about-vert {
    display: block;
    position: absolute;
    right: 2px;
    top: 4px;
    writing-mode: vertical-rl;
    font-family: var(--font-num);
    font-size: 10.5px;
    letter-spacing: 0.32em;
    color: var(--mint);
    opacity: 0.7;
  }
}

/* ---------- 章节骨架 ---------- */
.page-about .about-block {
  border-bottom: var(--about-bd);
}

.page-about .about-block--graphite {
  background: var(--graphite);
}

.page-about .about-block--turf {
  background: var(--turf);
}

.page-about .about-block__inner {
  max-width: var(--about-max);
  margin-inline: auto;
  padding: clamp(36px, 6vw, 80px) var(--gutter);
  display: grid;
  gap: clamp(18px, 3vw, 40px);
}

.page-about .about-rail {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--muted);
  align-self: start;
}

.page-about .about-rail__num {
  font-family: var(--font-num);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1;
  color: var(--line);
  transition: color 0.25s ease;
}

.page-about .about-rail__label {
  font-size: 12px;
  letter-spacing: 0.18em;
  border-left: 3px solid var(--line);
  padding-left: 8px;
  transition: border-color 0.25s ease, color 0.25s ease;
}

.page-about .about-rail[aria-current="true"] .about-rail__num {
  color: var(--cyan);
}

.page-about .about-rail[aria-current="true"] .about-rail__label {
  color: var(--text);
  border-left-color: var(--cyan);
}

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

@media (min-width: 960px) {
  .page-about .about-block__inner {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: clamp(84px, 12vh, 120px);
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-about .about-rail__label {
    border-left: 0;
    border-top: 3px solid var(--line);
    padding-left: 0;
    padding-top: 6px;
  }

  .page-about .about-rail[aria-current="true"] .about-rail__label {
    border-left-color: transparent;
    border-top-color: var(--cyan);
  }
}

/* ---------- 通用文本 ---------- */
.page-about .about-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 4vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
  text-wrap: balance;
}

.page-about .about-title::before {
  content: "";
  display: block;
  width: 44px;
  height: 4px;
  background: var(--cyan);
  margin-bottom: 14px;
}

.page-about .about-block--turf .about-title::before {
  background: var(--orange);
}

.page-about .about-block--graphite .about-title::before {
  background: var(--amber);
}

.page-about .about-text {
  max-width: 64ch;
  margin: 0 0 14px;
  color: var(--muted);
  font-size: clamp(14px, 1.6vw, 15.5px);
  line-height: 1.85;
}

.page-about .about-text strong {
  color: var(--text);
  font-weight: 700;
}

.page-about .about-text--tight {
  margin-top: 20px;
  margin-bottom: 0;
}

.page-about .about-quote {
  margin: 24px 0 0;
  padding: 18px 20px;
  background: var(--graphite);
  border-left: 4px solid var(--cyan);
  color: var(--text);
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.7;
}

.page-about .about-block--graphite .about-quote {
  background: var(--ink-900);
}

/* ---------- 图片 ---------- */
.page-about .about-media {
  margin: 0 0 clamp(20px, 4vw, 30px);
  border: 2px solid var(--line);
  background: var(--turf);
  box-shadow: var(--shadow-hard);
}

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

.page-about .about-media figcaption {
  padding: 9px 12px;
  border-top: 2px solid var(--line);
  background: var(--graphite);
  color: var(--muted);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  line-height: 1.6;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: clamp(16px, 3vw, 26px) 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 12px;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), rgba(34, 245, 200, 0.18) 62%, rgba(58, 74, 70, 0.2));
}

.page-about .tl-item {
  position: relative;
  padding-left: 36px;
  padding-bottom: clamp(16px, 3vw, 26px);
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 21px;
  height: 21px;
  border-radius: 50%;
  border: 3px solid var(--cyan);
  background: var(--ink-900);
  box-shadow: 0 0 0 5px var(--ink-900);
}

.page-about .tl-item--hot::before {
  border-color: var(--orange);
}

.page-about .tl-item__card {
  border: 2px solid var(--line);
  background: var(--ink-800);
  padding: 15px 16px 17px;
  box-shadow: var(--shadow-hard);
}

.page-about .tl-item--hot .tl-item__card {
  border-color: rgba(255, 90, 54, 0.55);
}

.page-about .tl-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}

.page-about .tl-item__ver {
  font-family: var(--font-num);
  font-size: clamp(1.3rem, 3.4vw, 2rem);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .tl-item--hot .tl-item__ver {
  color: var(--orange);
}

.page-about .tl-item__when {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
  border: 1px solid rgba(242, 181, 68, 0.45);
  padding: 2px 8px;
}

.page-about .tl-item__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.02rem, 2.4vw, 1.3rem);
  line-height: 1.3;
  margin: 0 0 6px;
}

.page-about .tl-item__text {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.75;
}

@media (min-width: 720px) {
  .page-about .tl-item {
    padding-left: 52px;
  }

  .page-about .about-timeline::before {
    left: 11px;
  }

  .page-about .tl-item::before {
    width: 25px;
    height: 25px;
    left: 0;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  margin-top: clamp(16px, 3vw, 24px);
}

.page-about .about-team__cards {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-about .team-card {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 4px 14px;
  border: 2px solid var(--line);
  background: var(--ink-800);
  padding: 16px 16px 18px;
  align-items: start;
}

.page-about .team-card__n {
  font-family: var(--font-num);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  line-height: 0.9;
  color: var(--cyan);
}

.page-about .team-card__t {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.08rem;
  letter-spacing: 0.02em;
  margin: 0 0 6px;
}

.page-about .team-card__d {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-team__side {
  margin-bottom: 0;
  align-self: start;
}

@media (min-width: 1080px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-team__side {
    position: sticky;
    top: clamp(84px, 12vh, 120px);
  }
}

/* ---------- 内容生产流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: 10px;
  margin-top: clamp(18px, 3vw, 26px);
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.page-about .flow-step {
  border: 2px solid rgba(58, 74, 70, 0.9);
  background: var(--ink-900);
  padding: 15px 14px 16px;
}

.page-about .flow-step__n {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .flow-step__t {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  margin: 0 0 5px;
}

.page-about .flow-step__d {
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-about .p-card {
  border: 2px solid var(--line);
  border-top: 4px solid var(--amber);
  background: var(--graphite);
  padding: 16px 18px;
}

.page-about .p-card__t {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  line-height: 1.3;
  margin: 0 0 6px;
}

.page-about .p-card__d {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 760px) {
  .page-about .about-partners {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

/* ---------- 认证与荣誉 ---------- */
.page-about .about-trust {
  display: grid;
  gap: 14px;
  margin-top: clamp(18px, 3vw, 26px);
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.page-about .trust-item {
  border-left: 3px solid var(--cyan);
  padding: 6px 0 6px 14px;
}

.page-about .trust-item:nth-child(even) {
  border-left-color: var(--orange);
}

.page-about .trust-item__t {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  margin: 0 0 5px;
}

.page-about .trust-item__d {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  max-width: var(--about-max);
  margin-inline: auto;
  padding: clamp(32px, 5vw, 68px) var(--gutter) clamp(40px, 6vw, 80px);
}

.page-about .about-cta__box {
  border: 3px solid var(--cyan);
  background:
    linear-gradient(135deg, rgba(34, 245, 200, 0.18), rgba(14, 59, 49, 0.94) 58%, rgba(7, 28, 23, 0.96));
  box-shadow: var(--shadow-lift);
  padding: clamp(22px, 4vw, 42px);
  display: grid;
  gap: 22px;
}

.page-about .about-cta__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  line-height: 1.12;
  margin: 0 0 10px;
  text-wrap: balance;
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 56ch;
  color: var(--text);
  font-size: clamp(13.5px, 1.6vw, 15px);
  line-height: 1.8;
}

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

.page-about .about-cta__more {
  margin: 18px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .about-cta__more a {
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

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

@media (min-width: 820px) {
  .page-about .about-cta__box {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

/* ---------- 返回顶部 ---------- */
.page-about .about-top {
  position: fixed;
  right: clamp(12px, 3vw, 26px);
  bottom: clamp(16px, 3vw, 30px);
  z-index: 20;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--graphite);
  color: var(--cyan);
  border: 2px solid var(--cyan);
  box-shadow: var(--shadow-hard);
  font-family: var(--font-num);
  font-size: 18px;
  line-height: 1;
  text-decoration: none;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.page-about .about-top:hover,
.page-about .about-top:focus-visible {
  transform: translateY(-3px);
  background: var(--ink-800);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-jump__link,
  .page-about .about-top,
  .page-about .about-rail__num,
  .page-about .about-rail__label {
    transition: none;
  }
}
<<<END>>>