.page-about {
  --about-gap: clamp(1.1rem, 3vw, 2.4rem);
  --about-pad: clamp(2.4rem, 7vw, 5.5rem);
  --about-edge: 1px solid rgba(155, 227, 198, 0.18);
  --about-edge-soft: 1px solid rgba(155, 227, 198, 0.11);
  color: var(--paper);
  background:
    radial-gradient(90% 55% at 78% 0%, rgba(20, 59, 45, 0.9), transparent 62%),
    var(--ink-950);
  overflow-x: clip;
}

.page-about .num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--amber-300);
  letter-spacing: 0.02em;
}

.page-about__crumbs {
  padding-top: clamp(0.8rem, 2vw, 1.4rem);
}

.page-about .crumbs__link,
.page-about .crumbs__sep,
.page-about .crumbs span {
  color: var(--moss);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.page-about .crumbs__link:hover {
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(1.2rem, 3.5vw, 2.4rem) var(--about-pad);
}

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

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

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.3rem, 8vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 0.7rem 0 0;
}

.page-about .about-hero__title span {
  display: block;
}

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

.page-about .about-hero__lead .lede {
  margin: 1.3rem 0 0;
  max-width: 40ch;
  font-size: clamp(0.95rem, 2.4vw, 1.05rem);
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(155, 227, 198, 0.16);
  border-radius: var(--r-m);
  overflow: hidden;
}

.page-about .about-hero__fact {
  background: var(--ink-900);
  padding: 0.85rem 1rem;
}

.page-about .about-hero__fact dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--moss);
}

.page-about .about-hero__fact dd {
  margin: 0.35rem 0 0;
  font-size: 0.95rem;
  color: var(--paper);
}

.page-about .about-hero__side {
  display: grid;
  gap: 1.2rem;
  align-content: start;
}

.page-about .about-hero__side-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--line);
  padding-bottom: 0.6rem;
  border-bottom: var(--about-edge);
}

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

.page-about .year-index__item {
  display: grid;
  grid-template-columns: 3.6rem minmax(0, 1fr);
  gap: 0.8rem;
  padding: 0.7rem 0;
  border-bottom: var(--about-edge-soft);
}

.page-about .year-index__num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--amber);
  padding-top: 0.15rem;
}

.page-about .year-index__text {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--paper-dim);
}

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

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-xl) var(--r-xl) var(--r-xl) var(--r-s);
  filter: saturate(0.9) brightness(0.86);
}

.page-about .media__caption {
  display: block;
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--moss);
}

/* ---------- 主张 ---------- */
.page-about .about-belief {
  padding-block: var(--about-pad);
  background: linear-gradient(180deg, transparent, rgba(13, 42, 32, 0.65) 22%, rgba(13, 42, 32, 0.65) 78%, transparent);
}

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

.page-about .about-belief__title {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 5vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
}

.page-about .about-belief__head .court-rule {
  margin-top: 1.1rem;
  width: 100%;
  max-width: 12rem;
}

.page-about .about-belief__body .prose {
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.85;
  color: var(--paper-dim);
  max-width: 62ch;
}

.page-about .about-belief__list {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-about .about-belief__item {
  padding: 1rem 1.1rem;
  border-radius: var(--r-l) var(--r-s) var(--r-l) var(--r-s);
  background: var(--ink-800);
  border: var(--about-edge-soft);
}

.page-about .about-belief__item .panel__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-about .about-belief__item p:last-child {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--paper-dim);
}

/* ---------- 时间轴 ---------- */
.page-about .about-axis {
  padding-block: var(--about-pad);
}

.page-about .about-axis__head {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1.6rem;
}

.page-about .about-axis__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 5vw, 3.1rem);
  line-height: 1.06;
}

.page-about .about-axis__tabs {
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  padding-bottom: 0.2rem;
  border-bottom: var(--about-edge);
  scrollbar-width: thin;
}

.page-about .about-axis .tab {
  flex: 0 0 auto;
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--paper-dim);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  padding: 0.7rem 0.85rem;
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-axis .tab:hover {
  color: var(--paper);
}

.page-about .about-axis .tab[aria-selected="true"] {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-about .about-axis .tab:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-about .about-axis__panels {
  padding-top: 1.5rem;
}

.page-about .about-axis__panel h3 {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  font-weight: 800;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .about-axis__panel p {
  margin: 0;
  max-width: 64ch;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-about .about-axis__points {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
  border-top: var(--about-edge-soft);
  padding-top: 0.9rem;
}

.page-about .about-axis__points li {
  font-size: 0.85rem;
  color: var(--moss);
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.page-about .about-axis__points .num {
  min-width: 3.4rem;
  font-size: 0.9rem;
}

/* ---------- 团队矩阵 ---------- */
.page-about .about-roster {
  padding-block: var(--about-pad);
  background: var(--ink-900);
}

.page-about .about-roster__head {
  display: grid;
  gap: 0.8rem;
  margin-bottom: 1.6rem;
}

.page-about .about-roster__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 5vw, 3.1rem);
  line-height: 1.06;
}

.page-about .about-roster__note {
  margin: 0;
  max-width: 56ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--moss);
}

.page-about .roster {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: rgba(155, 227, 198, 0.16);
  border: var(--about-edge);
  border-radius: var(--r-l);
  overflow: hidden;
}

.page-about .roster__cell {
  background: var(--ink-800);
  padding: 1.15rem 1.1rem 1.3rem;
  min-height: 100%;
}

.page-about .roster__cell--accent {
  background: linear-gradient(155deg, rgba(242, 169, 59, 0.18), var(--ink-700) 70%);
}

.page-about .roster__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 0.24em;
  color: var(--line);
}

.page-about .roster__name {
  margin: 0.55rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .roster__desc {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-about .roster__stat {
  margin: 0.9rem 0 0;
  padding-top: 0.7rem;
  border-top: var(--about-edge-soft);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--paper-dim);
}

/* ---------- 服务网络 ---------- */
.page-about .about-network {
  padding-block: var(--about-pad);
  background: linear-gradient(180deg, var(--ink-900), var(--ink-950));
}

.page-about .about-network__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  padding: clamp(1.1rem, 4vw, 2.4rem);
  border: var(--about-edge);
  border-radius: var(--r-xl);
  background: linear-gradient(160deg, rgba(13, 42, 32, 0.95), rgba(7, 26, 20, 0.95));
}

.page-about .about-network__visual {
  display: flex;
  align-items: center;
}

.page-about .about-netmap {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-network__title {
  margin: 0.55rem 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.4vw, 2.5rem);
  line-height: 1.1;
}

.page-about .about-network__body .prose {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-about .netlegend {
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.1rem;
}

.page-about .netlegend__item {
  display: grid;
  grid-template-columns: 1.1rem minmax(0, 1fr);
  gap: 0.65rem;
  padding: 0.7rem 0.5rem;
  border-top: var(--about-edge-soft);
  border-radius: var(--r-s);
  transition: background 0.22s var(--ease);
}

.page-about .netlegend__item:hover,
.page-about .netlegend__item:focus-within {
  background: rgba(155, 227, 198, 0.07);
}

.page-about .netlegend__dot {
  width: 0.6rem;
  height: 0.6rem;
  margin-top: 0.42rem;
  border-radius: 50%;
  background: var(--line);
}

.page-about .netlegend__dot--city {
  background: var(--line);
}

.page-about .netlegend__dot--relay {
  background: var(--amber);
  border-radius: 3px;
}

.page-about .netlegend__dot--venue {
  background: var(--amber-300);
}

.page-about .netlegend__dot--partner {
  background: transparent;
  border: 1px dashed var(--line);
}

.page-about .netlegend__label {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: baseline;
  font-size: 0.9rem;
  color: var(--paper);
}

.page-about .netlegend__label em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--amber-300);
}

.page-about .netlegend__desc {
  grid-column: 2;
  margin-top: 0.25rem;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--moss);
}

.page-about .about-network__figure {
  margin: 1.6rem 0 0;
}

.page-about .about-network__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-l) var(--r-xl) var(--r-s) var(--r-xl);
  filter: saturate(0.85) brightness(0.82);
}

/* ---------- 手账 ---------- */
.page-about .about-journal {
  padding-block: var(--about-pad);
}

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

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

.page-about .about-journal__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-xl) var(--r-s) var(--r-xl) var(--r-xl);
  filter: saturate(0.9) brightness(0.85);
}

.page-about .about-journal__title {
  margin: 0.55rem 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.4vw, 2.6rem);
  line-height: 1.1;
}

.page-about .about-journal__body .prose {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--paper-dim);
  max-width: 60ch;
}

.page-about .about-journal__rhythm {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
  border-top: var(--about-edge-soft);
  padding-top: 1rem;
}

.page-about .about-journal__rhythm li {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--paper-dim);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: baseline;
}

.page-about .about-journal__rhythm .num {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--amber);
  min-width: 4.2rem;
}

.page-about .about-journal__link {
  margin: 1.5rem 0 0;
}

.page-about .about-journal__link .btn {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

/* ---------- 履约 ---------- */
.page-about .about-proof {
  padding-block: var(--about-pad);
  background: var(--ink-900);
}

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

.page-about .about-proof__title {
  margin: 0.55rem 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.4vw, 2.5rem);
  line-height: 1.12;
}

.page-about .about-proof__head .prose {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--paper-dim);
  max-width: 60ch;
}

.page-about .about-proof__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(155, 227, 198, 0.16);
  border-radius: var(--r-l);
  overflow: hidden;
  align-self: start;
}

.page-about .about-proof__stats li {
  background: var(--ink-800);
  padding: 1rem 1.1rem;
  display: grid;
  gap: 0.3rem;
}

.page-about .about-proof__num {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--amber);
  letter-spacing: 0.02em;
}

.page-about .about-proof__label {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--moss);
}

/* ---------- 回到入口 ---------- */
.page-about .about-return {
  padding-block: var(--about-pad);
  background:
    radial-gradient(70% 90% at 82% 20%, rgba(242, 169, 59, 0.16), transparent 60%),
    var(--ink-950);
}

.page-about .about-return__inner {
  display: grid;
  gap: 1.4rem;
  padding: clamp(1.2rem, 4vw, 2.6rem);
  border: 1px dashed rgba(155, 227, 198, 0.3);
  border-radius: var(--r-xl);
}

.page-about .about-return__title {
  margin: 0.55rem 0 0.7rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.6vw, 2.6rem);
  line-height: 1.1;
}

.page-about .about-return__note {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--moss);
  max-width: 52ch;
}

.page-about .about-return__actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.8rem;
}

.page-about .about-return__ticket {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1rem 1.2rem;
  text-decoration: none;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-about .about-return__ticket:hover,
.page-about .about-return__ticket:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 12px 26px rgba(4, 16, 12, 0.55);
}

.page-about .about-return__aux {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--moss);
}

.page-about .about-return__aux a {
  color: var(--line);
  text-decoration: none;
  border-bottom: 1px dotted rgba(155, 227, 198, 0.4);
}

.page-about .about-return__aux a:hover,
.page-about .about-return__aux a:focus-visible {
  color: var(--amber-300);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-about .about-belief__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-about .about-proof__stats li {
    padding: 1.1rem 1rem;
  }
}

@media (min-width: 760px) {
  .page-about .roster {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .roster__cell--a {
    grid-column: span 3;
  }

  .page-about .roster__cell--b {
    grid-column: span 3;
  }

  .page-about .roster__cell--c {
    grid-column: span 2;
  }

  .page-about .roster__cell--d {
    grid-column: span 4;
  }

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

@media (min-width: 880px) {
  .page-about .about-hero__grid {
    grid-template-columns: 58px minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: clamp(1.4rem, 3vw, 2.8rem);
  }

  .page-about .about-hero__rail {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 1.4rem;
    writing-mode: vertical-rl;
    padding-top: 0.4rem;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--line);
    border-left: 1px dashed rgba(155, 227, 198, 0.28);
    padding-left: 0.9rem;
    min-height: 62%;
  }

  .page-about .about-hero__side {
    border-left: var(--about-edge-soft);
    padding-left: clamp(1rem, 2.4vw, 1.8rem);
  }

  .page-about .about-belief__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(1.4rem, 4vw, 3.4rem);
  }

  .page-about .about-belief__head {
    position: sticky;
    top: 6rem;
    align-self: start;
  }

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

  .page-about .about-axis__panels {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(1.2rem, 3vw, 2.4rem);
  }

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

  .page-about .about-axis__points {
    grid-column: 2;
    grid-row: 1;
    margin: 0;
    border-top: 0;
    border-left: 1px dashed rgba(155, 227, 198, 0.28);
    padding: 0 0 0 1.2rem;
  }

  .page-about .about-network__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: clamp(1.4rem, 3.4vw, 3rem);
  }

  .page-about .about-journal__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
    gap: clamp(1.4rem, 4vw, 3.2rem);
  }

  .page-about .about-proof__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: clamp(1.4rem, 4vw, 3.2rem);
  }

  .page-about .about-return__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    align-items: center;
    gap: clamp(1.4rem, 4vw, 3rem);
  }

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

  .page-about .about-return__aux {
    grid-column: 1 / -1;
    border-top: var(--about-edge-soft);
    padding-top: 0.9rem;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero__title {
    font-size: clamp(3.4rem, 5.4vw, 5.8rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-return__ticket,
  .page-about .netlegend__item,
  .page-about .about-axis .tab {
    transition: none;
  }

  .page-about .about-return__ticket:hover,
  .page-about .about-return__ticket:focus-visible {
    transform: none;
  }
}
<<<END>>>