.page-about {
  --about-axis: 68px;
  --about-offset: 0px;
}

/* ── 首屏 ───────────────────────────── */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 48px 0 56px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 40px;
}

.page-about .about-hero__body h1 {
  margin: 14px 0 20px;
  font-size: clamp(34px, 8vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--white);
}

.page-about .about-hero__body .lead {
  max-width: 34em;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-hero__facts .metric {
  background: var(--panel);
  padding: 18px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-hero__facts .metric__value {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 7vw, 40px);
  line-height: 1;
  color: var(--copper);
  font-weight: 700;
}

.page-about .about-hero__facts .metric__unit {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--gray);
  letter-spacing: 0.08em;
}

.page-about .about-hero__facts .metric__label {
  font-size: 13px;
  color: var(--gray);
  letter-spacing: 0.04em;
}

.page-about .about-hero__slash {
  position: absolute;
  right: -18%;
  top: 8%;
  width: 46%;
  height: 240px;
  background: linear-gradient(140deg, var(--red) 0%, var(--red-deep) 100%);
  transform: skewY(-12deg);
  opacity: 0.85;
  z-index: 1;
  pointer-events: none;
}

.page-about .about-hero__rule {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 38%;
  height: 3px;
  background: var(--copper);
  z-index: 2;
}

/* ── 时间轴 ─────────────────────────── */
.page-about .about-path__intro {
  display: grid;
  gap: 28px;
  margin-bottom: 48px;
}

.page-about .about-path__figure {
  margin: 0;
}

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

.page-about .tl::before {
  content: "";
  position: absolute;
  left: calc(var(--about-axis) - 1px);
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--line);
}

.page-about .tl__item {
  display: grid;
  grid-template-columns: var(--about-axis) minmax(0, 1fr);
  gap: 0 16px;
  align-items: start;
}

.page-about .tl__year {
  position: relative;
  padding-top: 22px;
  text-align: right;
}

.page-about .tl__num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--copper);
  display: block;
}

.page-about .tl__year::after {
  content: "";
  position: absolute;
  right: -21px;
  top: 28px;
  width: 9px;
  height: 9px;
  background: var(--ink);
  border: 1px solid var(--copper);
  transform: rotate(45deg);
}

.page-about .tl__card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  padding: 20px 18px 22px;
  margin-bottom: 20px;
}

.page-about .tl__item--current .tl__card {
  border-left-color: var(--red);
  background: var(--panel-2);
}

.page-about .tl__item--current .tl__year::after {
  background: var(--red);
  border-color: var(--red);
}

.page-about .tl__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.01em;
}

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

.page-about .about-vers {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-about .about-vers .mono-label {
  display: block;
  margin-bottom: 16px;
}

.page-about .about-vers__scale {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
}

.page-about .about-vers__scale li {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gray);
  border-top: 1px solid var(--line);
  padding: 10px 14px 0 0;
  margin-right: 14px;
  position: relative;
}

.page-about .about-vers__scale li::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 1px;
  height: 6px;
  background: var(--line);
}

.page-about .about-vers__scale li.is-current {
  color: var(--copper);
  border-top-color: var(--copper);
}

.page-about .about-vers .note {
  max-width: 46em;
}

/* ── 工程师与资质 ───────────────────── */
.page-about .about-crew__band {
  list-style: none;
  margin: 0 0 44px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-crew__cell {
  background: var(--ink);
  padding: 20px 16px 22px;
}

.page-about .about-crew__num {
  display: block;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 8vw, 46px);
  font-weight: 700;
  line-height: 1;
  color: var(--white);
}

.page-about .about-crew__cap {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--gray);
}

.page-about .about-crew__body {
  display: grid;
  gap: 32px;
}

.page-about .about-crew__text p {
  margin: 0 0 18px;
}

.page-about .about-crew__table {
  margin-top: 26px;
  width: 100%;
}

.page-about .about-crew__figure {
  margin: 0;
}

/* ── 网点 ───────────────────────────── */
.page-about .about-net__grid {
  display: grid;
  gap: 32px;
}

.page-about .about-net__figure {
  margin: 0;
}

.page-about .about-net__stacks {
  display: grid;
  gap: 16px;
}

.page-about .about-net__station {
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  background: var(--panel);
  padding: 20px 18px 22px;
}

.page-about .about-net__station--hub {
  border-left-color: var(--red);
}

.page-about .about-net__station--center {
  border-left-color: var(--copper);
}

.page-about .about-net__station--coop {
  border-left-color: var(--gauge);
}

.page-about .about-net__code {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--gray);
}

.page-about .about-net__name {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-net__radius {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--copper);
  letter-spacing: 0.02em;
}

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

/* ── 验资 ───────────────────────────── */
.page-about .about-qual__layout {
  display: grid;
  gap: 36px;
}

.page-about .about-qual__flow {
  display: grid;
  gap: 0;
}

.page-about .about-qual__step {
  position: relative;
  padding: 0 0 26px 26px;
  border-left: 1px solid var(--line);
}

.page-about .about-qual__step:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-about .about-qual__step::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 4px;
  width: 9px;
  height: 9px;
  background: var(--ink);
  border: 1px solid var(--copper);
  transform: rotate(45deg);
}

.page-about .about-qual__stepnum {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--copper);
}

.page-about .about-qual__step h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-qual__step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray);
}

.page-about .about-qual__side {
  align-self: start;
}

/* ── 工艺门类 ───────────────────────── */
.page-about .about-fields__list {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-fields__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-fields__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--copper);
}

.page-about .about-fields__name {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-fields__scene {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray);
}

.page-about .about-fields__row--more {
  background: linear-gradient(90deg, rgba(158, 27, 34, 0.14) 0%, rgba(11, 11, 13, 0) 62%);
  padding-left: 14px;
  margin-left: -14px;
}

/* ── 续签 ───────────────────────────── */
.page-about .about-renew__grid {
  display: grid;
  gap: 36px;
}

.page-about .about-renew__stat {
  border: 1px solid var(--line);
  border-top: 3px solid var(--red);
  background: var(--panel);
  padding: 26px 22px 28px;
}

.page-about .about-renew__value {
  display: block;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(52px, 14vw, 84px);
  font-weight: 700;
  line-height: 0.95;
  color: var(--copper);
}

.page-about .about-renew__value small {
  font-size: 0.42em;
  margin-left: 4px;
  color: var(--gray);
}

.page-about .about-renew__label {
  display: block;
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-about .about-renew__text {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--white);
}

.page-about .about-renew__points {
  display: grid;
  gap: 24px;
}

.page-about .about-renew__point {
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.page-about .about-renew__point h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-renew__point p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray);
}

.page-about .about-renew__cta {
  margin-top: 48px;
  padding: 28px 22px 30px;
  border: 1px solid var(--line);
  background: var(--panel-2);
}

.page-about .about-renew__ctatitle {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-renew__ctatext {
  margin: 0 0 22px;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray);
}

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

/* ── 响应式 ─────────────────────────── */
@media (max-width: 639px) {
  .page-about .about-hero__slash {
    width: 58%;
    height: 170px;
    opacity: 0.7;
  }

  .page-about .about-crew__table {
    font-size: 13px;
  }
}

@media (min-width: 700px) {
  .page-about {
    --about-axis: 92px;
  }

  .page-about .about-hero {
    padding: 72px 0 88px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-hero__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 12px;
  }

  .page-about .about-hero__slash {
    right: -14%;
    top: 4%;
    width: 38%;
    height: 320px;
  }

  .page-about .about-path__intro {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .tl__item {
    gap: 0 26px;
  }

  .page-about .tl__year::after {
    right: -31px;
  }

  .page-about .tl__card {
    padding: 26px 28px 28px;
    margin-bottom: 26px;
  }

  .page-about .about-crew__band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-crew__body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

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

  .page-about .about-qual__layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-fields__row {
    grid-template-columns: 104px minmax(0, 220px) minmax(0, 1fr);
    align-items: baseline;
    gap: 6px 24px;
    padding: 26px 0;
  }

  .page-about .about-renew__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 52px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .tl__card {
    padding: 28px 32px 30px;
  }

  .page-about .about-net__stacks {
    gap: 20px;
  }

  .page-about .about-renew__cta {
    padding: 36px 34px 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__slash {
    opacity: 0.85;
  }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</｜｜DSML｜｜ calls>