.page-about {
  --ab-gutter: clamp(18px, 4.5vw, 64px);
  --ab-radius: 26px;
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5vw, 56px) var(--ab-gutter) clamp(36px, 6vw, 84px);
  background:
    radial-gradient(130% 100% at 92% 0%, rgba(184, 255, 61, 0.15), transparent 58%),
    radial-gradient(90% 80% at 0% 100%, rgba(77, 227, 193, 0.1), transparent 60%),
    linear-gradient(165deg, #161d1a 0%, var(--ink) 52%, #07130e 100%);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  left: 34%;
  right: -12%;
  bottom: -130px;
  height: 300px;
  background: repeating-linear-gradient(
    115deg,
    rgba(243, 246, 238, 0.055) 0 1px,
    transparent 1px 26px
  );
  transform: skewY(-7deg);
  pointer-events: none;
}

.page-about .ab-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--wrap);
  margin: 0 auto;
}

.page-about .ab-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(26px, 4.5vw, 54px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-about .ab-crumbs a {
  color: var(--steel);
  text-decoration: none;
  transition: color 180ms ease;
}

.page-about .ab-crumbs a:hover,
.page-about .ab-crumbs a:focus-visible {
  color: var(--turf);
}

.page-about .ab-crumbs span[aria-hidden="true"] {
  color: rgba(143, 166, 178, 0.45);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .ab-hero h1 {
  margin: 12px 0 clamp(16px, 2vw, 24px);
  font-family: var(--font-cond);
  font-size: clamp(30px, 6vw, 66px);
  line-height: 1.08;
  letter-spacing: -0.012em;
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-hero__lede {
  max-width: 48ch;
  margin: 0;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.82;
  color: rgba(243, 246, 238, 0.78);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.4vw, 38px);
}

.page-about .ab-scorecard {
  margin: 0;
  display: grid;
  gap: 0;
  padding: clamp(14px, 2.2vw, 22px) clamp(16px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--ab-radius);
  background: linear-gradient(180deg, rgba(18, 59, 46, 0.72), rgba(11, 31, 23, 0.5));
}

.page-about .ab-scorecard__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .ab-scorecard__row:last-child {
  border-bottom: 0;
}

.page-about .ab-scorecard__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-about .ab-scorecard__value {
  margin: 0;
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
}

.page-about .ab-num {
  font-family: var(--font-cond);
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1;
  font-weight: 700;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-unit {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 224, 168, 0.7);
}

/* ---------- 主体骨架 ---------- */
.page-about .ab-body {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(28px, 5vw, 56px) var(--ab-gutter) clamp(52px, 7vw, 100px);
}

.page-about .ab-rail {
  margin: 0 0 clamp(24px, 4vw, 40px);
}

.page-about .ab-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-about .ab-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .ab-rail__list li {
  flex: 0 0 auto;
}

.page-about .ab-rail__list a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: rgba(243, 246, 238, 0.72);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 200ms ease, color 200ms ease, background 200ms ease;
}

.page-about .ab-rail__list a:hover,
.page-about .ab-rail__list a:focus-visible {
  border-color: rgba(184, 255, 61, 0.55);
  color: var(--paper);
  background: rgba(184, 255, 61, 0.08);
}

.page-about .ab-rail__num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--amber);
}

/* ---------- 章节通用 ---------- */
.page-about .ab-sec {
  padding-bottom: clamp(34px, 5.5vw, 76px);
}

.page-about .ab-sec + .ab-sec {
  border-top: 1px solid var(--line-soft);
  padding-top: clamp(28px, 4.6vw, 60px);
}

.page-about .ab-sec h2 {
  margin: 10px 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-cond);
  font-size: clamp(23px, 3.4vw, 40px);
  line-height: 1.18;
  letter-spacing: -0.006em;
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-sec p {
  margin: 0 0 14px;
  font-size: clamp(14.5px, 1.4vw, 16.5px);
  line-height: 1.82;
  color: rgba(243, 246, 238, 0.76);
}

.page-about .ab-sec p:last-child {
  margin-bottom: 0;
}

.page-about .ab-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: clamp(18px, 2.6vw, 26px);
  padding: clamp(14px, 2vw, 20px);
  border-radius: var(--radius-md);
  background: rgba(38, 53, 45, 0.5);
  border-left: 3px solid var(--turf);
}

.page-about .ab-note p {
  flex: 1 1 100%;
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(243, 246, 238, 0.65);
}

/* ---------- 使命面板 ---------- */
.page-about .ab-panel {
  padding: clamp(22px, 4vw, 52px);
  border-radius: var(--radius-lg);
  background: var(--paper);
  color: var(--ink);
}

.page-about .ab-panel h2 {
  color: var(--ink);
}

.page-about .ab-panel p {
  color: rgba(11, 31, 23, 0.74);
  max-width: 62ch;
}

.page-about .ab-eyebrow--dark {
  color: #2f6b52;
}

.page-about .ab-roles {
  display: grid;
  gap: 14px;
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .ab-role {
  padding: clamp(16px, 2.2vw, 22px);
  border-radius: var(--radius-md);
  border: 1px solid rgba(11, 31, 23, 0.12);
  background: #ffffff;
}

.page-about .ab-role__tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  background: rgba(184, 255, 61, 0.38);
  color: #14301f;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
}

.page-about .ab-role h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .ab-role p {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.75;
  color: rgba(11, 31, 23, 0.7);
}

/* ---------- 图 ---------- */
.page-about .ab-figure {
  margin: 0 0 clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--char);
}

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

.page-about .ab-figure figcaption {
  padding: 10px 16px 13px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--steel);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 字段列表 ---------- */
.page-about .ab-fields {
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
}

.page-about .ab-field {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .ab-field:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-about .ab-field__num {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  padding-top: 3px;
  color: var(--turf);
}

.page-about .ab-field__name {
  margin: 0 0 6px;
  font-size: 16px;
  line-height: 1.42;
  color: var(--paper);
}

.page-about .ab-field p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
}

.page-about .ab-inline-link {
  margin-top: clamp(18px, 2.6vw, 26px);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--steel);
}

.page-about .ab-inline-link a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .ab-inline-link a:hover,
.page-about .ab-inline-link a:focus-visible {
  color: var(--turf);
}

/* ---------- 团队 ---------- */
.page-about .ab-team {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.page-about .ab-team__media {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-about .ab-team__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1000 / 1200;
  object-fit: cover;
}

.page-about .ab-team__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-team__stats li {
  display: grid;
  gap: 4px;
  padding: 14px 12px;
  border-radius: var(--radius-sm);
  background: rgba(38, 53, 45, 0.55);
  border-top: 2px solid rgba(184, 255, 61, 0.45);
}

.page-about .ab-team__num {
  font-family: var(--font-cond);
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-team__stats li span:last-child {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--steel);
}

/* ---------- 阶段 ---------- */
.page-about .ab-band {
  margin: 0 0 clamp(20px, 3vw, 30px);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

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

.page-about .ab-stage {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  padding: clamp(15px, 2.3vw, 24px);
  border-radius: var(--radius-md);
  border: 1px solid var(--line-soft);
  background: linear-gradient(135deg, rgba(38, 53, 45, 0.85), rgba(11, 31, 23, 0.35));
}

.page-about .ab-stage__num {
  font-family: var(--font-cond);
  font-size: clamp(24px, 3vw, 30px);
  line-height: 1;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-stage__body h3 {
  margin: 0 0 7px;
  font-size: 16px;
  line-height: 1.42;
  color: var(--paper);
}

.page-about .ab-stage__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
}

/* ---------- 生态 ---------- */
.page-about .ab-eco {
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .ab-eco__item {
  padding: clamp(16px, 2.3vw, 24px);
  border-radius: var(--radius-md);
  background: rgba(18, 59, 46, 0.62);
  border-left: 2px solid rgba(77, 227, 193, 0.55);
  transition: background 200ms ease, border-left-color 200ms ease;
}

.page-about .ab-eco__item:hover {
  background: rgba(18, 59, 46, 0.9);
  border-left-color: var(--turf);
}

.page-about .ab-eco__num {
  display: block;
  font-family: var(--font-cond);
  font-size: clamp(28px, 3.6vw, 40px);
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-eco__item h3 {
  margin: 8px 0 6px;
  font-size: 15.5px;
  line-height: 1.42;
  color: var(--paper);
}

.page-about .ab-eco__item p {
  margin: 0;
  font-size: 13.6px;
  line-height: 1.74;
}

/* ---------- 服务原则 ---------- */
.page-about .ab-principles {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.page-about .ab-principles__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-about .ab-principles__list li {
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .ab-principles__list li:first-child {
  border-top: 1px solid var(--line);
}

.page-about .ab-principles__list h3 {
  margin: 0 0 7px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--turf);
}

.page-about .ab-principles__list p {
  margin: 0;
  font-size: 14.2px;
  line-height: 1.8;
}

.page-about .ab-principles__list a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  word-break: break-word;
}

.page-about .ab-principles__list a:hover,
.page-about .ab-principles__list a:focus-visible {
  color: var(--turf);
}

.page-about .ab-cta {
  margin-top: clamp(24px, 4vw, 42px);
  padding: clamp(20px, 3.6vw, 40px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(184, 255, 61, 0.22);
  background: linear-gradient(135deg, rgba(184, 255, 61, 0.13), rgba(18, 59, 46, 0.62) 55%, rgba(11, 31, 23, 0.4));
}

.page-about .ab-cta p {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  max-width: 52ch;
  font-size: clamp(14.5px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(243, 246, 238, 0.86);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .ab-roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 820px) {
  .page-about .ab-team {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    align-items: start;
  }

  .page-about .ab-principles {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    align-items: end;
  }

  .page-about .ab-body {
    display: grid;
    grid-template-columns: 188px minmax(0, 1fr);
    column-gap: clamp(34px, 5vw, 84px);
    align-items: start;
  }

  .page-about .ab-rail {
    margin: 0;
    position: sticky;
    top: 40px;
  }

  .page-about .ab-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--line);
  }

  .page-about .ab-rail__list a {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    margin-left: -1px;
    padding: 9px 12px;
    white-space: normal;
    font-size: 13.5px;
  }

  .page-about .ab-rail__list a:hover,
  .page-about .ab-rail__list a:focus-visible {
    border-left-color: var(--turf);
    background: rgba(184, 255, 61, 0.07);
  }

  .page-about .ab-field {
    grid-template-columns: 52px minmax(0, 1fr);
  }

  .page-about .ab-stage:nth-child(even) {
    margin-left: clamp(18px, 4vw, 54px);
  }
}

@media (min-width: 1180px) {
  .page-about .ab-stage {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-rail__list a,
  .page-about .ab-eco__item,
  .page-about .ab-crumbs a {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>