.page-about {
  --about-rule: rgba(107, 135, 153, 0.26);
  --about-panel: linear-gradient(155deg, rgba(18, 58, 90, 0.55), rgba(10, 34, 57, 0.14));
  --about-card: linear-gradient(165deg, rgba(14, 44, 71, 0.9), rgba(6, 23, 40, 0.5));
  color: var(--paper);
}

.page-about .about-head {
  max-width: 64ch;
  margin-bottom: clamp(24px, 4vw, 42px);
}

.page-about .about-head__title {
  margin: 10px 0 12px;
  font-size: clamp(24px, 4.2vw, 38px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--paper);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 52px) 0 clamp(30px, 5vw, 56px);
  background:
    radial-gradient(115% 88% at 84% 6%, rgba(18, 58, 90, 0.85), transparent 62%),
    radial-gradient(78% 66% at 4% 102%, rgba(242, 163, 58, 0.1), transparent 64%);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(26px, 5vw, 48px);
  align-items: center;
}

.page-about .about-hero__title {
  margin: 12px 0 16px;
  font-size: clamp(29px, 5.6vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.025em;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-hero__lede {
  max-width: 60ch;
  margin: 0;
  color: var(--mist);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-hero__figure {
  margin: 0;
  max-width: 420px;
  width: 100%;
  justify-self: center;
}

.page-about .hero-viz {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 22px 46px rgba(0, 0, 0, 0.5));
}

.page-about .hero-viz__grid line {
  stroke: rgba(18, 58, 90, 0.9);
  stroke-width: 1;
}

.page-about .hero-viz__wave path {
  fill: none;
  stroke: rgba(107, 135, 153, 0.55);
  stroke-width: 1.4;
}

.page-about .hero-viz__line path {
  fill: none;
  stroke: rgba(242, 163, 58, 0.75);
  stroke-width: 1.6;
}

.page-about .hero-viz__node circle {
  fill: var(--ink-900);
  stroke: var(--amber);
  stroke-width: 2;
}

.page-about .hero-viz__frame {
  fill: none;
  stroke: rgba(169, 191, 203, 0.5);
  stroke-width: 1.2;
  stroke-dasharray: 6 6;
}

.page-about .hero-viz__dot {
  fill: var(--amber-hi);
}

.page-about .about-hero__meta {
  list-style: none;
  margin: clamp(26px, 4.5vw, 44px) 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--about-rule);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 14px;
}

.page-about .about-meta__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-meta__num {
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.1;
  font-weight: 600;
  color: var(--amber-hi);
  letter-spacing: -0.01em;
}

.page-about .about-meta__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 起点 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .about-origin__p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist);
  max-width: 66ch;
}

.page-about .about-origin__points {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-point {
  display: grid;
  gap: 4px;
  padding: 12px 16px;
  border-left: 2px solid var(--amber);
  background: linear-gradient(90deg, rgba(18, 58, 90, 0.42), transparent 78%);
}

.page-about .about-point__k {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--amber-hi);
}

.page-about .about-point__v {
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

.page-about .about-origin__figure {
  margin: 0;
  position: relative;
}

.page-about .about-origin__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  clip-path: var(--chamfer);
  background: var(--ink-800);
}

.page-about .about-origin__cap {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--line);
}

/* ---------- 历程 ---------- */
.page-about .about-history {
  background: linear-gradient(180deg, rgba(10, 34, 57, 0.75), rgba(6, 23, 40, 0.2));
  border-top: 1px solid var(--about-rule);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-history__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-about .about-history__index {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .about-history__index-label {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--line);
  margin: 0;
  text-transform: uppercase;
}

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

.page-about .about-index-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  text-decoration: none;
  color: var(--mist);
  border-left: 2px solid rgba(107, 135, 153, 0.4);
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease, background-color var(--t-fast) ease;
}

.page-about .about-index-link:hover,
.page-about .about-index-link:focus-visible {
  color: var(--paper);
  border-color: var(--amber);
  background: rgba(18, 58, 90, 0.55);
}

.page-about .about-index-link__code {
  font-size: 12px;
  color: var(--amber);
  flex: none;
}

.page-about .about-index-link__text {
  font-size: 14px;
  line-height: 1.5;
}

.page-about .about-history__figure {
  margin: 6px 0 0;
}

.page-about .about-history__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 5 / 7;
  object-fit: cover;
  clip-path: var(--chamfer-sm);
  background: var(--ink-700);
  opacity: 0.9;
}

.page-about .about-history__stages {
  display: grid;
  gap: 16px;
}

.page-about .stage {
  position: relative;
  padding: 20px clamp(16px, 3vw, 26px) 22px;
  background: var(--about-panel);
  border: 1px solid var(--about-rule);
  clip-path: var(--chamfer-sm);
  transition: background-color var(--t-mid) ease, border-color var(--t-mid) ease;
}

.page-about .stage:hover {
  border-color: rgba(242, 163, 58, 0.45);
}

.page-about .stage__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px dashed rgba(107, 135, 153, 0.35);
}

.page-about .stage__code {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
  padding: 2px 8px;
  border: 1px solid rgba(242, 163, 58, 0.5);
}

.page-about .stage__title {
  margin: 0;
  font-size: clamp(17px, 2.4vw, 21px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
  flex: 1 1 auto;
}

.page-about .stage__ver {
  font-size: 12px;
  color: var(--line);
}

.page-about .stage__p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

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

.page-about .stage__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 247, 245, 0.86);
}

.page-about .stage__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  background: var(--amber);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  list-style: none;
  margin: 0 0 clamp(24px, 4vw, 40px);
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

.page-about .team-card {
  padding: 18px 18px 20px;
  background: var(--about-card);
  border: 1px solid var(--about-rule);
  clip-path: var(--chamfer-sm);
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-about .team-card__num {
  font-size: 30px;
  line-height: 1;
  font-weight: 600;
  color: var(--amber-hi);
}

.page-about .team-card__name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .team-card__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-team__network {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--about-rule);
}

.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 5 / 3;
  object-fit: cover;
  clip-path: var(--chamfer);
  background: var(--ink-800);
}

.page-about .about-team__cities-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-about .about-team__cities-text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

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

/* ---------- 审核 ---------- */
.page-about .about-audit {
  background: linear-gradient(180deg, rgba(10, 34, 57, 0.7), rgba(6, 23, 40, 0.22));
  border-top: 1px solid var(--about-rule);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .audit-steps {
  list-style: none;
  margin: 0 0 clamp(22px, 3.5vw, 34px);
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .audit-step {
  position: relative;
  padding: 18px 18px 20px;
  background: rgba(6, 23, 40, 0.55);
  border-top: 2px solid var(--amber);
  clip-path: var(--chamfer-sm);
}

.page-about .audit-step__code {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--line);
  margin-bottom: 6px;
}

.page-about .audit-step__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .audit-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-audit__panel {
  display: grid;
  gap: 18px;
  padding: clamp(18px, 3vw, 28px);
  background: linear-gradient(140deg, rgba(18, 58, 90, 0.6), rgba(6, 23, 40, 0.35));
  border: 1px solid var(--about-rule);
  clip-path: var(--chamfer);
}

.page-about .audit-score__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

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

.page-about .audit-score__item {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--paper);
}

.page-about .audit-score__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 10px;
  height: 2px;
  background: var(--amber-hi);
}

.page-about .audit-review__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .audit-review__text {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .audit-review__text:last-child {
  margin-bottom: 0;
}

/* ---------- 运营标准 ---------- */
.page-about .standard-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .standard-item {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 18px 18px 20px;
  border: 1px solid var(--about-rule);
  border-bottom: 2px solid rgba(107, 135, 153, 0.5);
  background: linear-gradient(180deg, rgba(14, 44, 71, 0.5), rgba(6, 23, 40, 0.2));
  transition: border-color var(--t-mid) ease;
}

.page-about .standard-item:hover {
  border-bottom-color: var(--amber);
}

.page-about .standard-item__idx {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .standard-item__title {
  margin: 0;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .standard-item__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  border-top: 1px solid var(--about-rule);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 22px;
  align-items: center;
}

.page-about .about-cta__title {
  margin: 10px 0 10px;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.3;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-cta__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 56ch;
}

.page-about .about-cta__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

  .page-about .about-origin__points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
  }

  .page-about .about-point {
    grid-template-rows: auto 1fr;
  }

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

  .page-about .about-audit__panel {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 28px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .page-about .about-hero__figure {
    justify-self: end;
  }

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

  .page-about .about-team__network {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.15fr) auto;
    gap: 32px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-history__grid {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-history__index {
    position: sticky;
    top: 96px;
  }

  .page-about .stage:nth-child(2) {
    margin-left: 14px;
  }

  .page-about .stage:nth-child(3) {
    margin-left: 28px;
  }

  .page-about .stage:nth-child(4) {
    margin-left: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index-link,
  .page-about .stage,
  .page-about .standard-item {
    transition: none;
  }
}
<<<END>>>