.page-about {
  --about-accent: var(--phx-red);
  --about-line: var(--phx-frame);
  background: var(--phx-ink);
  color: var(--phx-body);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--about-line);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(224, 58, 31, 0.24), rgba(14, 27, 44, 0) 58%),
    linear-gradient(180deg, #0B1725 0%, var(--phx-ink) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(53, 69, 90, 0.34) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(53, 69, 90, 0.34) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.55;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -90px;
  right: -70px;
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, rgba(224, 58, 31, 0.55), rgba(242, 106, 33, 0) 72%);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding-top: 26px;
  padding-bottom: 38px;
}

.page-about .about-hero__crumb {
  margin-bottom: 16px;
}

.page-about .about-hero__eyebrow {
  margin: 0 0 10px;
  color: var(--phx-amber);
  letter-spacing: 0.16em;
}

.page-about .about-hero__title {
  margin: 0;
  font-size: 30px;
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--phx-cream);
}

.page-about .about-hero__lede {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--phx-body);
  max-width: 60ch;
}

.page-about .about-stats {
  list-style: none;
  margin: 24px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--about-line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 14px;
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--phx-amber);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--phx-mute);
}

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

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-top: 2px solid var(--phx-red);
  filter: saturate(1.06);
}

/* ---------- 档案脊骨架 ---------- */
.page-about .about-arch {
  position: relative;
  padding: 4px 0;
}

.page-about .about-arch__spine {
  position: absolute;
  left: 13px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--phx-red) 0%, var(--phx-orange) 34%, rgba(53, 69, 90, 0.35) 100%);
  z-index: 2;
  pointer-events: none;
}

.page-about .about-block {
  position: relative;
  padding: 36px 20px 34px 48px;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-block:last-child {
  border-bottom: 0;
}

.page-about .about-block__mark {
  position: absolute;
  left: 0;
  top: 38px;
  width: 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 3;
}

.page-about .about-no {
  display: block;
  width: 28px;
  padding: 3px 0 4px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--phx-amber);
  background: var(--phx-ink);
  border: 1px solid var(--phx-red);
}

.page-about .about-block__rot {
  display: none;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--phx-mute);
  writing-mode: vertical-rl;
  text-transform: uppercase;
}

.page-about .about-h2 {
  margin: 0 0 16px;
  font-size: 21px;
  line-height: 1.34;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--phx-cream);
}

.page-about .about-p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--phx-body);
  max-width: 64ch;
}

.page-about .about-p:last-child {
  margin-bottom: 0;
}

.page-about .about-p a {
  color: var(--phx-amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 180, 61, 0.45);
}

.page-about .about-p a:hover {
  border-bottom-color: var(--phx-amber);
}

/* ---------- 01 字段 ---------- */
.page-about .about-fields {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 12px;
  background: var(--phx-coal);
}

.page-about .about-field__k {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--phx-red);
}

.page-about .about-field__v {
  font-size: 13px;
  color: var(--phx-cream);
}

/* ---------- 02 团队 ---------- */
.page-about .about-crew {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 20px 0;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-crew__item {
  padding: 14px 16px;
  background: var(--phx-coal);
  border-left: 2px solid transparent;
  transition: border-color 180ms ease;
}

.page-about .about-crew__item:hover {
  border-left-color: var(--phx-red);
}

.page-about .about-crew__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--phx-amber);
  padding: 2px 6px;
  border: 1px solid rgba(255, 180, 61, 0.4);
}

.page-about .about-crew__name {
  margin: 10px 0 6px;
  font-size: 15px;
  font-weight: 900;
  color: var(--phx-cream);
}

.page-about .about-crew__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--phx-mute);
}

.page-about .about-sla {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .about-sla__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 14px;
  background: rgba(28, 36, 48, 0.85);
  border-left: 2px solid var(--phx-amber);
}

.page-about .about-sla__k {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--phx-amber);
  white-space: nowrap;
}

.page-about .about-sla__v {
  font-size: 13px;
  line-height: 1.6;
  color: var(--phx-body);
}

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

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-left: 2px solid var(--phx-orange);
}

.page-about .about-figure .phx-figure-cap {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--phx-mute);
}

/* ---------- 03 收录范围 ---------- */
.page-about .about-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-filter .phx-tag.is-active {
  background: var(--phx-red);
  border-color: var(--phx-red);
  color: var(--phx-cream);
}

.page-about .about-zones {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .about-zone {
  padding: 15px 16px;
  background: var(--phx-coal);
  border: 1px solid var(--about-line);
  border-left: 2px solid var(--phx-slate);
  transition: border-left-color 180ms ease;
}

.page-about .about-zone:hover {
  border-left-color: var(--phx-red);
}

.page-about .about-zone__name {
  margin: 0 0 7px;
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--phx-cream);
}

.page-about .about-zone__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--phx-mute);
}

.page-about .about-banner {
  margin: 22px 0 0;
}

.page-about .about-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
  border-top: 2px solid var(--phx-red);
}

/* ---------- 04 版本（浅色区段） ---------- */
.page-about .about-block--paper {
  background: var(--phx-paper);
  border-bottom-color: rgba(14, 27, 44, 0.16);
}

.page-about .about-block--paper .about-no {
  background: var(--phx-paper);
  color: #A93A16;
  border-color: var(--phx-red);
}

.page-about .about-block--paper .about-block__rot {
  color: rgba(35, 43, 54, 0.5);
}

.page-about .about-block--paper .about-h2 {
  color: #131A24;
}

.page-about .about-block--paper .about-p {
  color: #3A4351;
}

.page-about .about-timeline {
  list-style: none;
  margin: 20px 0 0;
  padding: 0 0 0 26px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--phx-red) 0%, rgba(224, 58, 31, 0.22) 100%);
}

.page-about .about-vstep {
  position: relative;
  padding-bottom: 20px;
}

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

.page-about .about-vdot {
  position: absolute;
  left: -26px;
  top: 6px;
  width: 11px;
  height: 11px;
  background: var(--phx-amber);
  border: 2px solid var(--phx-red);
  transform: rotate(45deg);
}

.page-about .about-vstep--now .about-vdot {
  background: var(--phx-red);
  border-color: #7E2A12;
  box-shadow: 0 0 0 4px rgba(224, 58, 31, 0.16);
}

.page-about .about-vver {
  margin: 0 0 5px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #A93A16;
}

.page-about .about-vstep--now .about-vver {
  color: var(--phx-red);
}

.page-about .about-vtext {
  margin: 0;
  font-size: 13px;
  line-height: 1.76;
  color: #3A4351;
  max-width: 58ch;
}

/* ---------- 05 反馈 ---------- */
.page-about .about-proof {
  list-style: none;
  margin: 20px 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-proof__item {
  padding: 16px 14px;
  background: var(--phx-coal);
}

.page-about .about-proof__num {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--phx-amber);
}

.page-about .about-proof__sub {
  font-size: 13px;
  font-weight: 500;
  color: var(--phx-mute);
  margin-left: 2px;
}

.page-about .about-proof__cap {
  margin: 6px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--phx-mute);
  letter-spacing: 0.02em;
}

/* ---------- 06 备案 ---------- */
.page-about .about-registry {
  margin: 20px 0 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-registry__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  padding: 12px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-registry__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--phx-mute);
}

.page-about .about-registry__v {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--phx-cream);
  word-break: break-word;
}

.page-about .about-registry__v--wide {
  overflow-wrap: anywhere;
}

/* ---------- 收束 ---------- */
.page-about .about-next {
  border-top: 1px solid var(--about-line);
  background:
    linear-gradient(120deg, rgba(224, 58, 31, 0.18) 0%, rgba(14, 27, 44, 0) 62%),
    var(--phx-deep);
}

.page-about .about-next__inner {
  padding-top: 34px;
  padding-bottom: 40px;
}

.page-about .about-next__lead {
  margin: 0 0 18px;
  font-size: 18px;
  line-height: 1.5;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--phx-cream);
  max-width: 26ch;
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-hero__title {
    font-size: 38px;
  }

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

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

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

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

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

  .page-about .about-registry__row {
    grid-template-columns: 9em minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 52px;
    align-items: end;
    padding-top: 44px;
    padding-bottom: 56px;
  }

  .page-about .about-hero__title {
    font-size: 46px;
    line-height: 1.14;
  }

  .page-about .about-hero__lede {
    font-size: 16px;
  }

  .page-about .about-hero__media img {
    aspect-ratio: 3 / 4;
  }

  .page-about .about-arch__spine {
    left: 16px;
  }

  .page-about .about-block {
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr);
    column-gap: 44px;
    align-items: start;
    padding: 54px 48px 50px 0;
  }

  .page-about .about-block__mark {
    position: static;
    width: 64px;
    align-items: flex-start;
    padding-top: 4px;
  }

  .page-about .about-no {
    width: 32px;
  }

  .page-about .about-block__rot {
    display: block;
    margin-top: 14px;
    margin-left: 10px;
  }

  .page-about .about-h2 {
    font-size: 27px;
    margin-bottom: 18px;
  }

  .page-about .about-p {
    font-size: 15.5px;
  }

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

  .page-about .about-banner {
    margin-top: 26px;
  }

  .page-about .about-next__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    padding-top: 40px;
    padding-bottom: 48px;
  }

  .page-about .about-next__lead {
    margin: 0;
    font-size: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-crew__item,
  .page-about .about-zone {
    transition: none;
  }
}
<<<END>>>