.page-about {
  --about-rule: 1px solid var(--line);
  --about-rule-strong: 1px solid var(--line-strong);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(28px, 5vw, 56px) 0 clamp(48px, 8vw, 96px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(118deg, transparent 52%, rgba(49, 230, 255, 0.09) 52%, rgba(49, 230, 255, 0.09) 54.2%, transparent 54.2%),
    linear-gradient(118deg, transparent 62%, rgba(246, 184, 75, 0.07) 62%, rgba(246, 184, 75, 0.07) 63.4%, transparent 63.4%),
    linear-gradient(118deg, transparent 76%, rgba(40, 214, 161, 0.06) 76%, rgba(40, 214, 161, 0.06) 76.8%, transparent 76.8%);
  pointer-events: none;
}

.page-about .crumbs {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: clamp(28px, 5vw, 48px);
}

.page-about .crumbs a {
  color: var(--cyan-mist);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

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

.page-about .crumbs__sep {
  color: var(--line-strong);
}

.page-about .crumbs [aria-current="page"] {
  color: var(--paper);
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
}

.page-about .about-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 14px;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(40px, 9vw, 92px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--paper);
  margin: 0 0 clamp(20px, 3vw, 28px);
}

.page-about .about-hero__title-accent {
  color: var(--cyan);
  font-weight: 700;
}

.page-about .about-hero__lead {
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.85;
  color: var(--cyan-mist);
  opacity: 0.82;
  max-width: 36em;
  margin: 0;
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 36px;
  list-style: none;
  padding: clamp(16px, 2.5vw, 22px) 0 0;
  margin: clamp(24px, 4vw, 36px) 0 0;
  border-top: var(--about-rule);
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 13px;
  color: var(--slate);
  letter-spacing: 0.02em;
}

.page-about .about-hero__facts .num {
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 400;
  color: var(--cyan);
}

.page-about .about-hero__figure {
  margin: 0;
  border: var(--about-rule-strong);
  position: relative;
  overflow: hidden;
  background: var(--ink-850);
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(7, 19, 31, 0.85));
  pointer-events: none;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.75fr);
    align-items: end;
  }
}

/* ---------- 章节骨架 ---------- */
.page-about .section {
  position: relative;
  padding: clamp(48px, 8vw, 100px) 0;
}

.page-about .section + .section {
  border-top: var(--about-rule);
}

.page-about .about-section__head {
  max-width: 46em;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .sec-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}

.page-about .about-section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--paper);
  margin: 0 0 16px;
}

.page-about .about-section__lead {
  font-size: clamp(14px, 1.55vw, 16px);
  line-height: 1.85;
  color: var(--cyan-mist);
  opacity: 0.78;
  margin: 0;
}

/* ---------- 01 品牌起点 ---------- */
.page-about .tenets {
  display: grid;
  grid-template-columns: 1fr;
  border-top: var(--about-rule);
}

.page-about .tenet {
  padding: clamp(20px, 3vw, 30px) 0;
  border-bottom: var(--about-rule);
}

.page-about .tenet__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}

.page-about .tenet__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.35;
  color: var(--paper);
  margin: 0 0 10px;
}

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

@media (min-width: 720px) {
  .page-about .tenets {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .tenet {
    padding: clamp(24px, 3vw, 34px) clamp(18px, 2.4vw, 28px);
    border-bottom: none;
  }
  .page-about .tenet:first-child {
    padding-left: 0;
  }
  .page-about .tenet:last-child {
    padding-right: 0;
  }
  .page-about .tenet + .tenet {
    border-left: var(--about-rule);
  }
}

/* ---------- 02 发展历程 ---------- */
.page-about .about-mile__figure {
  margin: 0 0 clamp(24px, 4vw, 40px);
  border: var(--about-rule);
  overflow: hidden;
  background: var(--ink-850);
}

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

.page-about .about-mile__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-about .about-mile__item {
  padding: clamp(20px, 3vw, 28px);
  border-left: 3px solid var(--cyan);
  border-bottom: var(--about-rule);
  background: linear-gradient(180deg, rgba(49, 230, 255, 0.055), transparent 70%);
}

.page-about .about-mile__item--gold {
  border-left-color: var(--gold);
  background: linear-gradient(180deg, rgba(246, 184, 75, 0.055), transparent 70%);
}

.page-about .about-mile__item--mint {
  border-left-color: var(--mint);
  background: linear-gradient(180deg, rgba(40, 214, 161, 0.055), transparent 70%);
}

.page-about .about-mile__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(32px, 5vw, 44px);
  font-weight: 300;
  line-height: 1;
  color: var(--cyan);
  margin-bottom: 14px;
}

.page-about .about-mile__item--gold .about-mile__num {
  color: var(--gold);
}

.page-about .about-mile__item--mint .about-mile__num {
  color: var(--mint);
}

.page-about .about-mile__stage {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  color: var(--paper);
  margin: 0 0 10px;
}

.page-about .about-mile__text {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate);
  margin: 0;
}

@media (min-width: 900px) {
  .page-about .about-mile__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-mile__item {
    border-bottom: none;
    padding: clamp(24px, 3vw, 34px);
  }
  .page-about .about-mile__item + .about-mile__item {
    border-top: none;
  }
}

/* ---------- 03 内容体系 ---------- */
.page-about .about-content__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-content__lead-block {
  position: relative;
  padding: clamp(22px, 3.5vw, 34px);
  border: var(--about-rule-strong);
  background:
    linear-gradient(180deg, rgba(49, 230, 255, 0.06), transparent 62%),
    var(--ink-850);
}

.page-about .about-content__lead-block::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 34px;
  height: 34px;
  border-top: 2px solid var(--cyan);
  border-left: 2px solid var(--cyan);
  pointer-events: none;
}

.page-about .about-content__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-900);
  background: var(--cyan);
  padding: 4px 9px;
  margin-bottom: 18px;
}

.page-about .about-content__lead-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 14px;
}

.page-about .about-content__lead-text {
  font-size: 14px;
  line-height: 1.85;
  color: var(--cyan-mist);
  opacity: 0.8;
  margin: 0;
}

.page-about .about-content__details {
  display: grid;
  gap: clamp(20px, 3vw, 28px);
  align-content: start;
}

.page-about .about-content__detail {
  border-top: var(--about-rule);
  padding-top: clamp(14px, 2vw, 20px);
}

.page-about .about-content__detail h4 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.01em;
  color: var(--amber);
  margin: 0 0 12px;
}

.page-about .about-content__detail-text {
  font-size: 14px;
  line-height: 1.85;
  color: var(--slate);
  margin: 0;
}

.page-about .about-scenes {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px 20px;
}

.page-about .about-scenes dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
  padding-top: 6px;
}

.page-about .about-scenes dd {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--cyan-mist);
  opacity: 0.74;
  margin: 0 0 8px;
  padding-left: 14px;
  position: relative;
  border-left: 1px solid var(--line);
}

@media (min-width: 700px) {
  .page-about .about-scenes {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: start;
  }
  .page-about .about-scenes dd {
    margin-bottom: 12px;
  }
}

@media (min-width: 900px) {
  .page-about .about-content__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }
}

/* ---------- 04 团队与节奏 ---------- */
.page-about .about-team__figure {
  margin: 0 0 clamp(26px, 4vw, 40px);
  border: var(--about-rule);
  overflow: hidden;
  background: var(--ink-850);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-team__matrix {
  border-top: var(--about-rule-strong);
}

.page-about .about-team__row {
  display: grid;
  gap: 10px;
  padding: clamp(16px, 2.6vw, 24px) 0;
  border-bottom: var(--about-rule);
  transition: background 0.2s var(--ease);
}

.page-about .about-team__row:hover {
  background: rgba(49, 230, 255, 0.035);
}

.page-about .about-team__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.page-about .about-team__role {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .about-team__count {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 400;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-team__bar {
  position: relative;
  height: 3px;
  background: rgba(169, 246, 255, 0.09);
  overflow: hidden;
}

.page-about .about-team__bar::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--cyan);
}

.page-about .about-team__row:nth-child(2) .about-team__count {
  color: var(--gold);
}

.page-about .about-team__row:nth-child(2) .about-team__bar::before {
  width: 33%;
  background: var(--gold);
}

.page-about .about-team__row:nth-child(3) .about-team__count {
  color: var(--mint);
}

.page-about .about-team__row:nth-child(3) .about-team__bar::before {
  width: 22%;
  background: var(--mint);
}

.page-about .about-team__desc {
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--slate);
  margin: 0;
  max-width: 62em;
}

.page-about .about-rhythm {
  margin-top: clamp(28px, 4vw, 44px);
  padding: clamp(22px, 3.5vw, 32px);
  border: var(--about-rule);
  border-left: 3px solid var(--gold);
  background: linear-gradient(120deg, rgba(246, 184, 75, 0.07), transparent 68%), var(--ink-850);
}

.page-about .about-rhythm__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.01em;
  color: var(--amber);
  margin: 0 0 16px;
}

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

.page-about .about-rhythm__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--cyan-mist);
  opacity: 0.82;
}

.page-about .about-rhythm__list .num {
  color: var(--gold);
  font-size: 13px;
  letter-spacing: 0.06em;
}

@media (min-width: 780px) {
  .page-about .about-rhythm__list li {
    flex-wrap: nowrap;
  }
  .page-about .about-rhythm__list .num {
    flex: 0 0 84px;
  }
}

/* ---------- 05 覆盖与协作 ---------- */
.page-about .about-reach__stats {
  display: grid;
  grid-template-columns: 1fr;
  border-top: var(--about-rule-strong);
  border-bottom: var(--about-rule);
  margin-bottom: clamp(26px, 4vw, 38px);
}

.page-about .about-reach__stat {
  padding: clamp(20px, 3vw, 30px) 0;
}

.page-about .about-reach__stat + .about-reach__stat {
  border-top: var(--about-rule);
}

.page-about .about-reach__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: clamp(40px, 7vw, 68px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--mint);
  margin-bottom: 12px;
}

.page-about .about-reach__num small {
  font-size: 0.42em;
  font-weight: 400;
  margin-left: 4px;
  color: var(--cyan-mist);
  letter-spacing: 0.04em;
}

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

.page-about .about-reach__partners {
  max-width: 58em;
}

.page-about .about-reach__partners-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 20px);
  color: var(--paper);
  margin: 0 0 12px;
}

.page-about .about-reach__partners-text {
  font-size: 14px;
  line-height: 1.85;
  color: var(--cyan-mist);
  opacity: 0.78;
  margin: 0 0 22px;
}

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

@media (min-width: 680px) {
  .page-about .about-reach__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-reach__stat {
    padding: clamp(24px, 3.4vw, 34px) 0;
  }
  .page-about .about-reach__stat + .about-reach__stat {
    border-top: none;
    border-left: var(--about-rule);
    padding-left: clamp(24px, 4vw, 44px);
  }
}

/* ---------- 06 服务承诺 ---------- */
.page-about .about-close {
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-about .about-close__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4.5vw, 56px);
  align-items: start;
}

.page-about .about-close__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 0 0 18px;
}

.page-about .about-close__text {
  font-size: clamp(14px, 1.5vw, 15.5px);
  line-height: 1.85;
  color: var(--cyan-mist);
  opacity: 0.78;
  margin: 0 0 clamp(22px, 3vw, 30px);
  max-width: 34em;
}

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

.page-about .about-close__links {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: var(--about-rule-strong);
}

.page-about .about-close__links li {
  padding: clamp(16px, 2.4vw, 22px) 0;
  border-bottom: var(--about-rule);
}

.page-about .about-close__links a {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--cyan);
  text-decoration: none;
  margin-bottom: 6px;
  transition: color 0.2s var(--ease);
}

.page-about .about-close__links a:hover,
.page-about .about-close__links a:focus-visible {
  color: var(--amber);
}

.page-about .about-close__links span {
  display: block;
  font-size: 13px;
  line-height: 1.72;
  color: var(--slate);
}

@media (min-width: 900px) {
  .page-about .about-close__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
}

/* ---------- 入场显现 ---------- */
.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.page-about [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}
<<<END>>>