.page-about {
  --ab-ink-soft: rgba(42, 28, 20, 0.78);
  --ab-on-dark: rgba(233, 240, 255, 0.78);
  --ab-cream-raised: #EFE2CB;
  --ab-cream-line: rgba(42, 28, 20, 0.12);
  background: var(--nx-midnight);
  color: var(--nx-white);
  font-family: var(--nx-body);
  overflow-x: clip;
}

/* ============ 首屏 ============ */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.5vw, 54px) 0 clamp(38px, 5.5vw, 70px);
  background-color: var(--nx-cream);
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.5), transparent 46%),
    repeating-linear-gradient(90deg, rgba(42, 28, 20, 0.035) 0 1px, transparent 1px 68px);
  color: var(--nx-brown);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 38%;
  right: -14%;
  bottom: -140px;
  height: 300px;
  transform: rotate(-7deg);
  background: linear-gradient(100deg, rgba(216, 69, 47, 0.09), rgba(255, 106, 43, 0.05) 45%, transparent 82%);
  pointer-events: none;
}

.page-about .about-hero .nx-crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-about .about-hero .nx-crumbs__list a {
  color: rgba(42, 28, 20, 0.68);
  text-decoration: none;
  border-bottom: 1px solid rgba(42, 28, 20, 0.22);
  transition: color var(--nx-t) var(--nx-ease), border-color var(--nx-t) var(--nx-ease);
}

.page-about .about-hero .nx-crumbs__list a:hover {
  color: var(--nx-red);
  border-color: var(--nx-red);
}

.page-about .about-hero .nx-crumbs__list [aria-current="page"] {
  color: var(--nx-brown);
  font-weight: 700;
}

.page-about .about-hero .nx-crumbs__sep {
  color: rgba(42, 28, 20, 0.32);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(20px, 3.4vw, 40px);
}

.page-about .about-hero__kicker {
  display: block;
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--nx-red);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--nx-display);
  font-weight: 800;
  font-size: clamp(34px, 6.2vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: var(--nx-brown);
}

.page-about .about-hero__lede {
  max-width: 44em;
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
  color: var(--ab-ink-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-hero__actions .nx-link {
  color: var(--nx-brown);
  border-bottom: 1px solid rgba(42, 28, 20, 0.34);
  text-decoration: none;
  font-size: 14px;
  padding-bottom: 2px;
}

.page-about .about-hero__actions .nx-link:hover {
  color: var(--nx-red);
  border-color: var(--nx-red);
}

.page-about .about-hero__panel {
  display: grid;
  gap: 12px;
  padding: clamp(18px, 2.4vw, 26px);
  border-radius: var(--nx-r-lg);
  border: 1px solid var(--ab-cream-line);
  background: var(--ab-cream-raised);
  box-shadow: 0 16px 34px -28px rgba(42, 28, 20, 0.6);
}

.page-about .about-hero__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 12px;
}

.page-about .about-hero__row:not(:last-child) {
  border-bottom: 1px dashed rgba(42, 28, 20, 0.16);
}

.page-about .about-hero__row span {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(42, 28, 20, 0.58);
}

.page-about .about-hero__row strong {
  font-family: var(--nx-mono);
  font-size: 13.5px;
  font-weight: 700;
  text-align: right;
  color: var(--nx-brown);
}

.page-about .about-hero__status {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(42, 28, 20, 0.72);
}

.page-about .about-hero__status .nx-dot {
  margin-top: 6px;
  flex: 0 0 auto;
}

.page-about .about-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: clamp(28px, 4vw, 46px);
  padding-top: clamp(16px, 2.2vw, 24px);
  border-top: 2px solid var(--nx-brown);
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: var(--nx-r-pill);
  border: 1px solid rgba(42, 28, 20, 0.18);
  font-size: 13px;
  color: var(--nx-brown);
  text-decoration: none;
  transition: background var(--nx-t) var(--nx-ease), color var(--nx-t) var(--nx-ease), border-color var(--nx-t) var(--nx-ease);
}

.page-about .about-index__link .nx-mono {
  font-size: 11.5px;
  color: var(--nx-red);
  transition: color var(--nx-t) var(--nx-ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link[data-active] {
  background: var(--nx-brown);
  border-color: var(--nx-brown);
  color: var(--nx-cream);
}

.page-about .about-index__link:hover .nx-mono,
.page-about .about-index__link[data-active] .nx-mono {
  color: var(--nx-cyan);
}

/* ============ 通用章节 ============ */
.page-about .about-sec {
  position: relative;
  padding: clamp(48px, 7vw, 104px) 0;
}

.page-about .about-sec--cream {
  background-color: var(--nx-cream);
  color: var(--nx-brown);
}

.page-about .about-hero + .about-sec--cream,
.page-about .about-sec--cream + .about-sec--cream {
  border-top: 1px solid var(--ab-cream-line);
}

.page-about .about-sec--dark {
  background-color: var(--nx-midnight);
  background-image:
    radial-gradient(72% 52% at 94% 2%, rgba(76, 240, 218, 0.09), transparent 62%),
    radial-gradient(62% 48% at 2% 98%, rgba(255, 106, 43, 0.08), transparent 62%);
  color: var(--nx-white);
}

.page-about .about-sec--dark::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(76, 240, 218, 0.55) 32%, rgba(255, 106, 43, 0.45) 74%, transparent);
  opacity: 0.7;
}

.page-about .about-sec__grid {
  display: grid;
  gap: clamp(14px, 2.2vw, 30px);
  align-items: start;
}

.page-about .about-sec__no {
  margin: 0;
  font-size: clamp(42px, 6.6vw, 86px);
  font-weight: 700;
  line-height: 0.88;
  letter-spacing: -0.05em;
}

.page-about .about-sec--cream .about-sec__no {
  color: rgba(216, 69, 47, 0.85);
}

.page-about .about-sec--dark .about-sec__no {
  color: rgba(76, 240, 218, 0.85);
}

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

.page-about .about-sec__title {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--nx-display);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.018em;
}

.page-about .about-sec--cream .about-sec__title {
  color: var(--nx-brown);
}

.page-about .about-sec--dark .about-sec__title {
  color: var(--nx-white);
}

.page-about .about-sec__body > p {
  max-width: 64ch;
  margin: 0 0 1.15em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
}

.page-about .about-sec--cream .about-sec__body > p {
  color: var(--ab-ink-soft);
}

.page-about .about-sec--dark .about-sec__body > p {
  color: var(--ab-on-dark);
}

.page-about .about-sec__desc {
  max-width: 52ch;
  margin: 0 0 clamp(22px, 3vw, 34px);
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.85;
}

.page-about .about-sec--dark .about-sec__desc {
  color: var(--nx-mist);
}

/* ============ 图片 ============ */
.page-about .about-figure {
  margin: clamp(26px, 3.6vw, 44px) 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--nx-r-lg);
  border: 1px solid rgba(143, 163, 204, 0.24);
}

.page-about .about-sec--cream .about-figure img {
  border-color: var(--ab-cream-line);
}

.page-about .about-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.72;
  color: var(--nx-mist);
}

.page-about .about-sec--cream .about-figure figcaption {
  color: rgba(42, 28, 20, 0.58);
}

.page-about .about-figure--square {
  max-width: 520px;
}

/* ============ 时间轴 ============ */
.page-about .about-timeline {
  list-style: none;
  margin: 0 0 clamp(24px, 3.4vw, 40px);
  padding: 0 0 0 26px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--nx-cyan), rgba(76, 240, 218, 0.08));
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: clamp(24px, 3.2vw, 38px);
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--nx-cyan);
  background: var(--nx-midnight);
  box-shadow: 0 0 0 5px rgba(76, 240, 218, 0.1);
}

.page-about .about-timeline__stage {
  margin: 0 0 6px;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--nx-cyan);
}

.page-about .about-timeline__item h3 {
  margin: 0 0 8px;
  font-family: var(--nx-display);
  font-weight: 700;
  font-size: clamp(18px, 2.1vw, 23px);
  line-height: 1.35;
  color: var(--nx-white);
}

.page-about .about-timeline__item p {
  max-width: 60ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ab-on-dark);
}

/* ============ 三条长期标准 ============ */
.page-about .about-sec--principles {
  padding-top: clamp(40px, 5.5vw, 82px);
}

.page-about .about-principles {
  display: grid;
  gap: clamp(14px, 1.8vw, 20px);
}

.page-about .about-principle {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.4vw, 28px);
  border-radius: var(--nx-r-lg);
  border: 1px solid rgba(76, 240, 218, 0.16);
  background: linear-gradient(158deg, rgba(27, 39, 87, 0.94), rgba(20, 30, 72, 0.9));
  transition: transform var(--nx-t) var(--nx-ease), border-color var(--nx-t) var(--nx-ease), box-shadow var(--nx-t) var(--nx-ease);
}

.page-about .about-principle:hover {
  transform: translateY(-4px);
  border-color: rgba(76, 240, 218, 0.42);
  box-shadow: var(--nx-shadow);
}

.page-about .about-principle__no {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--nx-mist);
}

.page-about .about-principle h3 {
  margin: 0;
  font-family: var(--nx-display);
  font-weight: 800;
  font-size: clamp(22px, 2.4vw, 28px);
  letter-spacing: 0.01em;
  color: var(--nx-cyan);
}

.page-about .about-principle p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ab-on-dark);
}

.page-about .about-principle__metric {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px dashed rgba(143, 163, 204, 0.28);
  font-family: var(--nx-mono);
  font-size: clamp(22px, 2.3vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--nx-orange);
}

.page-about .about-principle__metric span {
  display: block;
  margin-top: 7px;
  font-family: var(--nx-body);
  font-size: 12.5px;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--nx-mist);
}

/* ============ 团队角色 ============ */
.page-about .about-roles {
  display: grid;
  gap: 10px;
  max-width: 64ch;
  margin: 0 0 1.4em;
}

.page-about .about-role {
  padding: 14px 16px;
  border-radius: var(--nx-r-md);
  border: 1px solid var(--ab-cream-line);
  border-left: 3px solid var(--nx-red);
  background: rgba(255, 255, 255, 0.46);
}

.page-about .about-role dt {
  margin-bottom: 5px;
  font-size: 15px;
  font-weight: 700;
  color: var(--nx-brown);
}

.page-about .about-role dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ab-ink-soft);
}

/* ============ 资质与合作 ============ */
.page-about .about-trust {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(20px, 2.6vw, 30px);
}

.page-about .about-trust__card {
  padding: clamp(18px, 2.2vw, 24px);
  border-radius: var(--nx-r-lg);
  border: 1px solid var(--ab-cream-line);
  background: var(--ab-cream-raised);
}

.page-about .about-trust__label {
  margin: 0 0 10px;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--nx-red);
}

.page-about .about-trust__card h3 {
  margin: 0 0 8px;
  font-family: var(--nx-display);
  font-weight: 700;
  font-size: clamp(16px, 1.7vw, 19px);
  line-height: 1.4;
  color: var(--nx-brown);
}

.page-about .about-trust__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ab-ink-soft);
}

/* ============ 收束 ============ */
.page-about .about-sec--closing {
  padding-bottom: clamp(56px, 8vw, 116px);
}

.page-about .about-stats {
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
  margin: 0 0 clamp(24px, 3vw, 36px);
}

.page-about .about-stat {
  padding-top: 16px;
  border-top: 3px solid var(--nx-red);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--nx-mono);
  font-size: clamp(30px, 3.8vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.025em;
  color: var(--nx-brown);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--nx-brown);
}

.page-about .about-stat__note {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.72;
  color: var(--ab-ink-soft);
}

.page-about .about-sec__body > p.about-slogan {
  max-width: 34em;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding-left: 18px;
  border-left: 4px solid var(--nx-orange);
  font-family: var(--nx-display);
  font-weight: 700;
  font-size: clamp(19px, 2.3vw, 27px);
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--nx-brown);
}

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-cta .nx-quiet {
  font-size: 14px;
  color: var(--nx-brown);
  border-bottom: 1px solid rgba(42, 28, 20, 0.34);
  text-decoration: none;
  padding-bottom: 2px;
}

.page-about .about-cta .nx-quiet:hover {
  color: var(--nx-red);
  border-color: var(--nx-red);
}

/* ============ 响应式 ============ */
@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 880px) {
  .page-about .about-sec__grid {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: clamp(26px, 3.6vw, 56px);
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.9fr);
    align-items: end;
  }
}

@media (min-width: 980px) {
  .page-about .about-principles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (max-width: 559px) {
  .page-about .about-hero__row {
    flex-wrap: wrap;
    gap: 4px 12px;
  }

  .page-about .about-hero__row strong {
    text-align: left;
  }

  .page-about .about-index__link {
    padding: 6px 11px;
    font-size: 12.5px;
  }

  .page-about .about-timeline {
    padding-left: 22px;
  }

  .page-about .about-timeline__item::before {
    left: -22px;
    width: 12px;
    height: 12px;
  }
}
<<<END>>>