.page-about {
  --about-track: 168px;
}

.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding-block: clamp(20px, 4vw, 44px) clamp(56px, 9vw, 110px);
}

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

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

/* ---------- 章节轨道 ---------- */
.page-about .about-rail {
  position: sticky;
  top: calc(var(--bar) + 6px);
  z-index: 4;
  padding-block: 8px;
  background: linear-gradient(180deg, rgba(11, 13, 16, 0.97), rgba(11, 13, 16, 0.82));
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

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

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

.page-about .about-rail__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  color: var(--silver);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .about-rail__link .num {
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--flame);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--cream);
  border-color: var(--line-2);
  background: rgba(255, 90, 31, 0.1);
}

.page-about .about-rail__foot {
  display: none;
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--silver);
  opacity: 0.7;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: 28px;
  padding-block: clamp(16px, 3vw, 30px) clamp(28px, 5vw, 52px);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-size: clamp(2.6rem, 9.5vw, 5rem);
  line-height: 0.96;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--flame);
}

.page-about .about-hero__lede {
  margin: 24px 0 0;
  max-width: 44ch;
  font-size: clamp(1rem, 1.7vw, 1.125rem);
  line-height: 1.78;
  color: var(--text);
}

.page-about .about-hero__note {
  margin: 14px 0 0;
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  align-content: start;
}

.page-about .about-fact {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
}

.page-about .about-fact:first-child {
  grid-column: 1 / -1;
  border-color: rgba(255, 90, 31, 0.34);
  background: linear-gradient(140deg, rgba(255, 90, 31, 0.13), rgba(23, 26, 31, 0.9) 62%);
}

.page-about .about-fact__num {
  display: block;
  font-size: clamp(1.5rem, 5.4vw, 2rem);
  line-height: 1;
  color: var(--cream);
}

.page-about .about-fact:first-child .about-fact__num {
  font-size: clamp(2.4rem, 9vw, 3.4rem);
  color: var(--flame);
}

.page-about .about-fact__num em {
  font-style: normal;
  font-size: 0.46em;
  margin-left: 3px;
  color: var(--silver);
}

.page-about .about-fact__label {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--silver);
}

/* ---------- 通用章节 ---------- */
.page-about .about-sec {
  padding-block: clamp(38px, 6.5vw, 72px);
  border-top: 1px solid var(--line);
}

.page-about .about-h2 {
  margin: 14px 0 0;
  font-size: clamp(1.6rem, 4.6vw, 2.6rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  max-width: 22ch;
}

/* ---------- 品牌主张 ---------- */
.page-about .about-split {
  display: grid;
  gap: 26px;
  margin-top: 26px;
}

.page-about .about-split__text p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-split__text p:first-child {
  color: var(--text);
}

.page-about .about-quote {
  margin: 0;
  padding: 24px 22px;
  border-left: 2px solid var(--flame);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(42, 46, 52, 0.42);
}

.page-about .about-quote p {
  margin: 0;
  font-size: clamp(1.1rem, 3vw, 1.35rem);
  line-height: 1.6;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .about-quote cite {
  display: block;
  margin-top: 12px;
  font-style: normal;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--silver);
}

/* ---------- 内容方法 ---------- */
.page-about .about-method {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

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

.page-about .about-tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-about .about-panel__lead {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-about .about-checks {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-checks li {
  position: relative;
  padding: 11px 0 11px 20px;
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--silver);
}

.page-about .about-checks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 20px;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-about .about-inline-link {
  display: inline-block;
  margin-top: 18px;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 224, 255, 0.4);
  padding-bottom: 2px;
}

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

.page-about .about-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
}

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

.page-about .about-figure--board img {
  aspect-ratio: 4 / 3;
  filter: saturate(0.85) contrast(1.05);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: clamp(24px, 4.5vw, 44px);
  border-radius: var(--r-xl);
  background: var(--cream);
  color: var(--ink);
}

.page-about .about-team .eyebrow {
  color: #6b6a62;
}

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

.page-about .about-team__lede {
  margin: 18px 0 0;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: #4a4a44;
}

.page-about .about-team__body {
  display: grid;
  gap: 26px;
  margin-top: 28px;
}

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

.page-about .about-crew__item {
  padding: 18px 0;
  border-top: 1px solid rgba(11, 13, 16, 0.14);
}

.page-about .about-crew__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-crew__tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--flame);
}

.page-about .about-crew__item h3 {
  margin: 6px 0 8px;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-crew__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #4a4a44;
}

.page-about .about-figure--desk {
  border-color: rgba(11, 13, 16, 0.16);
  background: #ded9cd;
}

.page-about .about-figure--desk img {
  aspect-ratio: 3 / 2;
}

/* ---------- 阶段演进 ---------- */
.page-about .about-stages {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-top: clamp(10px, 2vw, 18px);
  padding: 0;
  border-top: 0;
  border-radius: var(--r-xl);
}

.page-about .about-stages__bg {
  position: absolute;
  inset: 0;
  margin: 0;
  z-index: -1;
}

.page-about .about-stages__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.28;
  filter: saturate(0.7);
}

.page-about .about-stages::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(11, 13, 16, 0.55), rgba(5, 6, 7, 0.94) 74%);
}

.page-about .about-stages__inner {
  padding: clamp(28px, 5vw, 52px) clamp(20px, 4vw, 44px);
}

.page-about .about-stages__lede {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .about-phases {
  position: relative;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-phase {
  position: relative;
  padding: 20px 0 20px 24px;
  border-left: 1px solid var(--line-2);
  outline: none;
}

.page-about .about-phase::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 28px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--rock);
  border: 1px solid var(--line-2);
  transition: background-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-about .about-phase:hover::before,
.page-about .about-phase:focus-visible::before {
  background: var(--flame);
  box-shadow: 0 0 0 5px rgba(255, 90, 31, 0.18);
}

.page-about .about-phase__tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--pill);
  background: rgba(255, 90, 31, 0.14);
  color: var(--flame);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-about .about-phase h3 {
  margin: 10px 0 8px;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .about-phase p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .about-phase__more {
  margin-top: 10px !important;
  font-size: 13px !important;
  color: rgba(168, 176, 184, 0.82) !important;
  border-left: 1px solid rgba(61, 224, 255, 0.3);
  padding-left: 12px;
}

@media (hover: hover) and (min-width: 768px) {
  .page-about .about-phase__more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.24s var(--ease), opacity 0.24s var(--ease), margin-top 0.24s var(--ease);
    margin-top: 0 !important;
  }

  .page-about .about-phase:hover .about-phase__more,
  .page-about .about-phase:focus-visible .about-phase__more {
    max-height: 220px;
    opacity: 1;
    margin-top: 10px !important;
  }
}

/* ---------- 合作覆盖 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 30px;
  margin-top: 26px;
}

.page-about .about-partners__text p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-partners__text p:first-child {
  color: var(--text);
}

.page-about .about-btn {
  margin-top: 6px;
}

.page-about .about-partners__visual {
  display: grid;
  gap: 18px;
  align-items: center;
  justify-items: center;
  padding: 22px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: radial-gradient(circle at 50% 30%, rgba(61, 224, 255, 0.09), transparent 62%), var(--panel);
}

.page-about .about-net {
  width: min(220px, 68%);
  height: auto;
}

.page-about .about-kpis {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-kpis li {
  font-size: 12.5px;
  color: var(--silver);
}

.page-about .about-kpis li .num {
  font-size: 20px;
  color: var(--cyan);
  margin-right: 5px;
}

/* ---------- 服务支持 ---------- */
.page-about .about-rows {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

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

.page-about .about-row__num {
  font-size: 12px;
  color: var(--flame);
  padding-top: 4px;
  letter-spacing: 0.06em;
}

.page-about .about-row__body h3 {
  margin: 0 0 8px;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .about-row__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .about-row__link {
  grid-column: 2;
  justify-self: start;
  font-size: 13.5px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 224, 255, 0.35);
  padding-bottom: 2px;
}

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

.page-about .about-cta {
  margin-top: clamp(30px, 5vw, 52px);
  padding: clamp(24px, 4.5vw, 42px);
  border-radius: var(--r-xl);
  background: linear-gradient(125deg, rgba(255, 90, 31, 0.9), rgba(215, 38, 30, 0.86) 58%, rgba(184, 107, 75, 0.9));
  color: #12060a;
}

.page-about .about-cta__title {
  margin: 0;
  font-size: clamp(1.35rem, 4vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: #12060a;
}

.page-about .about-cta__text {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(18, 6, 10, 0.8);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-cta .btn--primary {
  background: #12060a;
  color: var(--cream);
  border-color: #12060a;
}

.page-about .about-cta .btn--ghost {
  border-color: rgba(18, 6, 10, 0.45);
  color: #12060a;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-about .about-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-fact:first-child {
    grid-column: auto;
  }

  .page-about .about-crew {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 22px;
  }

  .page-about .about-crew__item {
    border-top: 1px solid rgba(11, 13, 16, 0.14);
    padding-top: 16px;
  }

  .page-about .about-crew__item:first-child {
    border-top: 0;
    padding-top: 0;
  }

  .page-about .about-row {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px 22px;
  }

  .page-about .about-row__link {
    grid-column: 3;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-about .about-shell {
    grid-template-columns: var(--about-track) minmax(0, 1fr);
    column-gap: 44px;
    row-gap: 34px;
  }

  .page-about .about-crumb {
    grid-column: 1 / -1;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--bar) + 30px);
    align-self: start;
    padding-block: 0;
    background: none;
    backdrop-filter: none;
    border-bottom: 0;
  }

  .page-about .about-rail__label {
    display: block;
    margin: 0 0 14px;
    font-size: 11px;
    letter-spacing: 0.16em;
    color: var(--silver);
    opacity: 0.72;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-rail__link {
    display: flex;
    width: 100%;
    padding: 11px 0 11px 14px;
    border: 0;
    border-left: 1px solid var(--line);
    border-radius: 0;
    font-size: 13.5px;
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    background: none;
    border-left-color: var(--flame);
    color: var(--cream);
  }

  .page-about .about-rail__foot {
    display: block;
    margin-top: 18px;
    padding-left: 14px;
    border-left: 1px solid var(--line);
  }

  .page-about .about-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 44px;
  }

  .page-about .about-facts {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .page-about .about-fact {
    padding: 18px 20px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.78fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-method {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: 36px;
    align-items: start;
  }

  .page-about .about-team__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-crew {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .page-about .about-crew__item {
    padding: 16px 0;
    border-top: 1px solid rgba(11, 13, 16, 0.14);
  }

  .page-about .about-crew__item:first-child {
    border-top: 0;
    padding-top: 0;
  }

  .page-about .about-partners {
    grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
    gap: 44px;
    align-items: center;
  }

  .page-about .about-partners__visual {
    padding: 26px 22px;
  }

  .page-about .about-cta {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px 32px;
  }

  .page-about .about-cta__title {
    grid-column: 1;
  }

  .page-about .about-cta__text {
    grid-column: 1;
    grid-row: 2;
    margin-top: 0;
  }

  .page-about .about-cta__actions {
    grid-column: 2;
    grid-row: 1 / span 2;
    margin-top: 0;
  }
}
<<<END>>>