.page-about {
  --about-accent: var(--galaxy);
  --about-gap: clamp(28px, 4vw, 56px);
  display: block;
  position: relative;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  margin: 0 0 26px;
}
.page-about .breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--grid);
}
.page-about .breadcrumb li + li::before {
  content: "/";
  margin-right: 4px;
  color: var(--line);
}
.page-about .breadcrumb a {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .24s var(--ease), border-color .24s var(--ease);
}
.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--signal);
}
.page-about .breadcrumb [aria-current="page"] {
  color: var(--white);
}

/* ---------- 通用区块头 ---------- */
.page-about .about-head {
  max-width: 760px;
}
.page-about .about-head h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.24;
  color: var(--white);
  margin: 12px 0 16px;
}
.page-about .about-head__desc {
  color: var(--silver);
  font-size: 15.5px;
  line-height: 1.95;
  margin: 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(22px, 3.5vw, 44px);
}
.page-about .about-hero__layout {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}
.page-about .about-hero__text h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 5.4vw, 54px);
  font-weight: 800;
  letter-spacing: -.025em;
  line-height: 1.15;
  color: var(--white);
  margin: 14px 0 18px;
  max-width: 15em;
}
.page-about .about-hero__text .lede {
  color: var(--silver);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.95;
  margin: 0;
}
.page-about .about-hero__text .rail-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__collage {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.page-about .about-hero__media {
  grid-column: 1 / -1;
  margin: 0;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  position: relative;
}
.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .media-frame__caption {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--grid);
}
.page-about .about-hero__big {
  grid-column: 1 / -1;
}

.page-about .data-card {
  padding: 18px 20px;
  border-radius: 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 8px;
}
.page-about .data-card__value {
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.05;
  color: var(--white);
  letter-spacing: -.02em;
}
.page-about .data-card__unit {
  font-size: 14px;
  color: var(--orbit);
}
.page-about .data-card__label {
  flex: 1 1 100%;
  font-size: 13px;
  color: var(--silver);
  letter-spacing: .02em;
}
.page-about .about-hero__big .data-card__value {
  font-size: clamp(42px, 6vw, 72px);
  color: var(--signal);
}

/* ---------- 时间轴 ---------- */
.page-about .about-path {
  padding-block: clamp(48px, 7vw, 96px);
}
.page-about .about-path__grid {
  display: grid;
  gap: 30px;
}
.page-about .about-path__rail {
  display: block;
}
.page-about .about-path__rail .scroll-meter {
  margin-top: 16px;
}

.page-about .about-years {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0 0 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-about .about-years::-webkit-scrollbar {
  display: none;
}
.page-about .about-years__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--line-soft);
  background: rgba(20, 28, 74, .55);
  color: var(--silver);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .24s var(--ease), color .24s var(--ease), background .24s var(--ease);
}
.page-about .about-years__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--grid);
  transition: background .24s var(--ease), box-shadow .24s var(--ease);
}
.page-about .about-years__link:hover,
.page-about .about-years__link:focus-visible {
  border-color: var(--signal);
  color: var(--white);
  background: rgba(255, 106, 43, .1);
}
.page-about .about-years__link:hover .about-years__dot,
.page-about .about-years__link:focus-visible .about-years__dot {
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(255, 106, 43, .18);
}

.page-about .about-path__body {
  min-width: 0;
}
.page-about .about-path__body .about-head {
  margin-bottom: 34px;
}

.page-about .about-mile {
  position: relative;
  padding-left: 26px;
  padding-bottom: 30px;
}
.page-about .about-mile::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--galaxy);
  box-shadow: 0 0 0 4px rgba(75, 63, 228, .2);
}
.page-about .about-mile::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 24px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--line), rgba(107, 119, 148, .05));
}
.page-about .about-mile:last-child {
  padding-bottom: 0;
}
.page-about .about-mile:last-child::after {
  content: none;
}
.page-about .about-mile__year {
  display: block;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--orbit);
  margin-bottom: 6px;
}
.page-about .about-mile h3 {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 22px);
  color: var(--white);
  margin: 0 0 10px;
  letter-spacing: -.01em;
}
.page-about .about-mile p {
  color: var(--silver);
  font-size: 15.5px;
  line-height: 1.95;
  margin: 0;
}

/* ---------- 团队职能 ---------- */
.page-about .about-team {
  padding-block: clamp(48px, 7vw, 92px);
}
.page-about .about-team__grid {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}
.page-about .about-role {
  position: relative;
  padding: 24px 22px 26px;
  border: 1px solid var(--line-soft);
  border-radius: 28px 28px 28px 8px;
  background: linear-gradient(155deg, rgba(20, 28, 74, .74), rgba(10, 16, 48, .42));
  transition: border-color .24s var(--ease), transform .24s var(--ease), box-shadow .24s var(--ease);
}
.page-about .about-role:nth-child(even) {
  border-radius: 28px 8px 28px 28px;
}
.page-about .about-role:hover,
.page-about .about-role:focus-within {
  border-color: rgba(255, 106, 43, .55);
  transform: translateY(-3px);
  box-shadow: var(--glow);
}
.page-about .about-role__index {
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--orbit);
}
.page-about .about-role h3 {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--white);
  margin: 10px 0 10px;
}
.page-about .about-role p {
  color: var(--silver);
  font-size: 15px;
  line-height: 1.92;
  margin: 0;
}
.page-about .about-team__media {
  margin: 34px 0 0;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
}
.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 网点分档 ---------- */
.page-about .about-tiers-section {
  padding-block: clamp(48px, 7vw, 92px);
}
.page-about .about-tiers {
  display: grid;
  gap: 14px;
  margin-top: 32px;
}
.page-about .about-tier {
  --tier-accent: var(--galaxy);
  padding: 22px 22px 24px;
  border-radius: 18px;
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--tier-accent);
  background: linear-gradient(180deg, rgba(20, 28, 74, .62), rgba(10, 16, 48, .34));
  transition: border-color .24s var(--ease), background .24s var(--ease);
}
.page-about .about-tier:nth-child(1) { --tier-accent: var(--signal); }
.page-about .about-tier:nth-child(2) { --tier-accent: var(--galaxy); }
.page-about .about-tier:nth-child(3) { --tier-accent: var(--nebula); }
.page-about .about-tier:nth-child(4) { --tier-accent: var(--orbit); }
.page-about .about-tier:hover,
.page-about .about-tier:focus-within {
  background: linear-gradient(180deg, rgba(20, 28, 74, .86), rgba(10, 16, 48, .5));
}
.page-about .about-tier__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
}
.page-about .about-tier__idx {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--tier-accent);
}
.page-about .about-tier__head h3 {
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--white);
  margin: 0;
  flex: 1 1 auto;
}
.page-about .about-tier__eta {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--tier-accent);
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 3px 10px;
}
.page-about .about-tier p {
  color: var(--silver);
  font-size: 14.5px;
  line-height: 1.9;
  margin: 14px 0 0;
}

/* ---------- 师傅资质 ---------- */
.page-about .about-cred-section {
  padding-block: clamp(48px, 7vw, 92px);
}
.page-about .about-cred {
  display: grid;
  gap: 26px;
  margin-top: 32px;
}
.page-about .about-cred__col {
  padding: 24px 22px;
  border-radius: 20px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(10, 16, 48, .7), rgba(4, 5, 13, .3));
}
.page-about .about-cred__title {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: .04em;
  color: var(--white);
  margin: 0 0 18px;
}
.page-about .about-trades {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
}
.page-about .about-trades .tag {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(124, 107, 255, .38);
  background: rgba(75, 63, 228, .16);
  color: var(--white);
  font-size: 14px;
  transition: border-color .24s var(--ease), background .24s var(--ease);
}
.page-about .about-trades .tag:hover {
  border-color: var(--signal);
  background: rgba(255, 106, 43, .12);
}
.page-about .about-cred__note {
  margin: 20px 0 0;
  color: var(--silver);
  font-size: 14px;
  line-height: 1.9;
}
.page-about .about-levels {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-level {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "code name"
    "code desc";
  gap: 1px 14px;
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
}
.page-about .about-level:first-child {
  border-top: 0;
  padding-top: 0;
}
.page-about .about-level__code {
  grid-area: code;
  align-self: start;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--orbit);
  border: 1px solid rgba(52, 224, 200, .4);
  border-radius: 999px;
  padding: 3px 10px;
}
.page-about .about-level__name {
  grid-area: name;
  color: var(--white);
  font-size: 15px;
}
.page-about .about-level__desc {
  grid-area: desc;
  color: var(--silver);
  font-size: 13.5px;
  line-height: 1.85;
}
.page-about .about-cred__fold {
  margin-top: 26px;
}

/* ---------- 合作生态 ---------- */
.page-about .about-supply {
  padding-block: clamp(48px, 7vw, 92px);
}
.page-about .about-supply__grid {
  display: grid;
  gap: 26px;
}
.page-about .about-supply__media {
  margin: 0;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
}
.page-about .about-supply__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-supply__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .about-supply__list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 18px;
  border-radius: 14px;
  border: 1px solid var(--line-soft);
  background: rgba(4, 5, 13, .32);
}
.page-about .about-supply__key {
  font-size: 20px;
  color: var(--signal);
  letter-spacing: -.01em;
  min-width: 3.6em;
}
.page-about .about-supply__label {
  color: var(--silver);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 数据与调整 ---------- */
.page-about .about-result {
  padding-block: clamp(48px, 7vw, 92px);
}
.page-about .about-metrics {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 32px;
}
.page-about .about-metric {
  padding: 22px 20px;
  border-radius: 18px;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--galaxy);
  background: linear-gradient(140deg, rgba(20, 28, 74, .6), rgba(4, 5, 13, .34));
}
.page-about .about-metric:nth-child(2) {
  border-left-color: var(--orbit);
}
.page-about .about-metric:nth-child(3) {
  border-left-color: var(--signal);
}
.page-about .about-metric__value {
  display: block;
  font-size: clamp(28px, 3.8vw, 44px);
  line-height: 1.05;
  color: var(--white);
  letter-spacing: -.02em;
}
.page-about .about-metric__value small {
  font-size: .44em;
  margin-left: 3px;
  color: var(--silver);
  letter-spacing: 0;
}
.page-about .about-metric__label {
  display: block;
  margin-top: 10px;
  color: var(--silver);
  font-size: 14px;
}
.page-about .about-metric__desc {
  margin: 8px 0 0;
  color: var(--grid);
  font-size: 12.5px;
  line-height: 1.75;
}
.page-about .about-adjust {
  margin-top: 40px;
}
.page-about .about-adjust h3 {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 22px);
  color: var(--white);
  margin: 0 0 18px;
}
.page-about .about-adjust__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-about .about-adjust__list li {
  position: relative;
  padding: 0 0 0 20px;
  color: var(--silver);
  font-size: 15px;
  line-height: 1.92;
}
.page-about .about-adjust__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--nebula);
  transform: rotate(45deg);
}
.page-about .about-adjust__list strong {
  color: var(--white);
  font-weight: 600;
}

/* ---------- 结尾引导 ---------- */
.page-about .about-cta-section {
  padding-block: clamp(40px, 6vw, 80px) clamp(56px, 8vw, 104px);
}
.page-about .about-cta {
  display: grid;
  gap: 24px;
  padding: clamp(28px, 4vw, 46px);
  border-radius: 26px;
  border: 1px solid var(--line-soft);
  background:
    radial-gradient(720px 320px at 12% 0%, rgba(75, 63, 228, .34), transparent 68%),
    radial-gradient(520px 280px at 92% 100%, rgba(52, 224, 200, .14), transparent 70%),
    rgba(10, 16, 48, .6);
}
.page-about .about-cta__text h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: -.02em;
  color: var(--white);
  margin: 0 0 14px;
}
.page-about .about-cta__text p {
  margin: 0;
  color: var(--silver);
  font-size: 15.5px;
  line-height: 1.95;
  max-width: 62ch;
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 640px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-tiers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
  .page-about .about-hero__text {
    padding-top: 12px;
  }
  .page-about .about-cred {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 24px;
  }
  .page-about .about-supply__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
    gap: 30px 44px;
  }
  .page-about .about-supply__grid .about-head {
    grid-column: 1 / -1;
  }
  .page-about .about-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
  }
  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 960px) {
  .page-about .about-path__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: var(--about-gap);
  }
  .page-about .about-path__rail {
    position: sticky;
    top: 104px;
    align-self: start;
  }
  .page-about .about-years {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-about .about-years__link {
    border: 0;
    background: none;
    padding: 9px 0;
    border-radius: 0;
    font-size: 14px;
  }
  .page-about .about-years__link:hover,
  .page-about .about-years__link:focus-visible {
    background: none;
  }
  .page-about .about-mile {
    padding-left: 34px;
  }
  .page-about .about-mile::before {
    left: 0;
    top: 9px;
  }
  .page-about .about-mile::after {
    left: 4px;
    top: 25px;
  }
}

@media (min-width: 1120px) {
  .page-about .about-hero__collage {
    gap: 16px;
  }
  .page-about .data-card {
    padding: 22px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-tier,
  .page-about .about-years__link {
    transition: none;
  }
  .page-about .about-role:hover,
  .page-about .about-role:focus-within {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>