.page-about {
  --about-rail: 108px;
  --about-line: rgba(26, 21, 16, 0.14);
  background: var(--cream);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: 32px;
}

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

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(30px, 7vw, 48px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 10px 0 18px;
  max-width: 15ch;
}

.page-about .about-hero .lede {
  max-width: 34em;
  margin: 0 0 26px;
  color: var(--ink);
}

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

.page-about .about-hero__panel {
  position: relative;
  overflow: hidden;
  background: var(--forest);
  border: var(--edge) solid var(--ink);
  box-shadow: var(--shadow-hard);
  padding: 22px 20px 18px;
  color: var(--cream);
}

.page-about .about-hero__panel::after {
  content: "";
  position: absolute;
  left: -25%;
  right: -25%;
  bottom: -55%;
  height: 70%;
  background: radial-gradient(ellipse at center, rgba(56, 224, 204, 0.22), transparent 68%);
  pointer-events: none;
}

.page-about .about-dial {
  position: relative;
  z-index: 1;
}

.page-about .about-dial__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(245, 239, 226, 0.22);
}

.page-about .about-dial__label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.04em;
}

.page-about .about-dial__chip {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--forest);
  background: var(--cyan);
  padding: 3px 9px;
}

.page-about .about-dial__rows {
  list-style: none;
  margin: 0;
  padding: 6px 0 0;
}

.page-about .about-dial__row {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(245, 239, 226, 0.16);
}

.page-about .about-dial__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(56, 224, 204, 0.16);
}

.page-about .about-dial__name {
  font-size: 15px;
  color: var(--cream);
}

.page-about .about-dial__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  font-weight: 700;
  color: var(--gold);
}

.page-about .about-dial__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding-top: 14px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-about .about-dial__foot b {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  color: var(--cyan);
  margin-left: 4px;
}

.page-about .about-dial__glyph {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  margin-top: 16px;
}

/* ---------- 主轨道 ---------- */
.page-about .about-body {
  border-top: var(--edge) solid var(--ink);
}

.page-about .about-line {
  position: relative;
  margin-top: 8px;
}

.page-about .about-line::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(217, 169, 60, 0.22));
}

.page-about .about-line__entry {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  row-gap: 10px;
  padding: 0 0 44px 34px;
}

.page-about .about-line__entry::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 9px;
  width: 11px;
  height: 11px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: var(--sand);
  border: 2px solid var(--gold);
}

.page-about .about-line__entry--last {
  padding-bottom: 8px;
}

.page-about .about-line__scale {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-about .about-line__code {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--forest);
}

.page-about .about-line__sub {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

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

.page-about .about-line__body h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(22px, 4.6vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  max-width: 22ch;
}

.page-about .about-line__body h2::after {
  content: "";
  display: block;
  width: 46px;
  height: 3px;
  background: var(--gold);
  margin-top: 10px;
}

.page-about .about-line__body .prose {
  max-width: 38em;
  margin: 0 0 16px;
  color: var(--ink);
}

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

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 20px 0 0;
  border: var(--edge) solid var(--ink);
  background: var(--cream);
  box-shadow: var(--shadow-hard-sm);
  overflow: hidden;
}

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

.page-about .about-figure .media__caption {
  display: block;
  padding: 9px 12px;
  border-top: 1px solid var(--about-line);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--forest-2);
  background: var(--cream);
}

.page-about .about-figure--square {
  max-width: 340px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- 旁注卡片 ---------- */
.page-about .about-role {
  background: var(--cream);
  border: var(--edge) solid var(--ink);
  box-shadow: var(--shadow-hard-sm);
  padding: 14px 16px;
  margin-bottom: 14px;
}

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

.page-about .about-role .card__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
  margin: 0 0 6px;
}

.page-about .about-role .card__title {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  line-height: 1.6;
  margin: 0;
  color: var(--ink);
}

/* ---------- 双线排期 ---------- */
.page-about .about-sched {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin: 22px 0;
}

.page-about .about-sched__lane {
  border: var(--edge) solid var(--ink);
  box-shadow: var(--shadow-hard-sm);
  padding: 18px 18px 16px;
  background: var(--cream);
}

.page-about .about-sched__lane--week {
  background: var(--forest);
  color: var(--cream);
}

.page-about .about-sched__lane--month {
  background: var(--cream);
  transform: translateY(0);
}

.page-about .about-sched__head {
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--gold);
}

.page-about .about-sched__freq {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  margin-bottom: 8px;
}

.page-about .about-sched__lane--week .about-sched__freq {
  background: var(--cyan);
  color: var(--forest);
}

.page-about .about-sched__lane--month .about-sched__freq {
  background: var(--gold);
  color: var(--ink);
}

.page-about .about-sched__head h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: -0.01em;
  margin: 0;
}

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

.page-about .about-sched__list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 9px;
  font-size: 15px;
  line-height: 1.7;
}

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

.page-about .about-sched__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  background: var(--gold);
}

.page-about .about-sched__lane--week .about-sched__list li::before {
  background: var(--cyan);
}

/* ---------- 版本时间线 ---------- */
.page-about .about-version {
  counter-reset: ver;
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-version::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(217, 169, 60, 0.18));
}

.page-about .about-version__item {
  counter-increment: ver;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  row-gap: 4px;
  padding: 0 0 22px 26px;
}

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

.page-about .about-version__item::before {
  content: counter(ver, decimal-leading-zero);
  position: absolute;
  left: 6px;
  top: 3px;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--forest);
  background: var(--gold);
  padding: 1px 3px;
  line-height: 1.3;
}

.page-about .about-version__year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--forest);
  margin-right: 10px;
}

.page-about .about-version__q {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-about .about-version__text {
  margin: 2px 0 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

/* ---------- 五项核对 ---------- */
.page-about .about-check {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.page-about .about-check__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-check__idx {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.3;
}

.page-about .about-check__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.01em;
  margin: 0 0 4px;
  color: var(--forest);
}

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

/* ---------- 侧栏补充 ---------- */
.page-about .about-aside {
  margin-bottom: 16px;
}

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

.page-about .card--dark.about-aside {
  border: var(--edge) solid var(--ink);
  box-shadow: var(--shadow-dark);
  padding: 16px 18px;
}

.page-about .card--dark.about-aside .card__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  margin: 0 0 8px;
}

.page-about .card--dark.about-aside .card__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  margin: 0;
  color: var(--cream);
}

.page-about .callout.about-aside {
  border: var(--edge) solid var(--ink);
  border-left: 6px solid var(--orange);
  box-shadow: var(--shadow-hard-sm);
  background: var(--cream);
  padding: 16px 18px;
}

.page-about .callout.about-aside p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.7;
}

.page-about .about-aside__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--forest-2);
  border-bottom: 2px solid var(--gold);
  padding-bottom: 2px;
  text-decoration: none;
  transition: color 120ms var(--ease), border-color 120ms var(--ease);
}

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

/* ---------- 联系卡 ---------- */
.page-about .about-contact-card {
  border: var(--edge) solid var(--ink);
  box-shadow: var(--shadow-hard-sm);
  background: var(--sand);
  padding: 16px 18px;
}

.page-about .about-contact-card .card__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
  margin: 0 0 10px;
}

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

.page-about .about-contact-card__list li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px dashed rgba(26, 21, 16, 0.18);
}

.page-about .about-contact-card__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-contact-card__list span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--forest-2);
  padding-top: 2px;
}

.page-about .about-contact-card__list b {
  font-weight: 500;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
  overflow-wrap: anywhere;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-line::before {
    left: var(--about-rail);
  }

  .page-about .about-line__entry {
    grid-template-columns: 90px minmax(0, 1fr);
    column-gap: 36px;
    row-gap: 0;
    padding: 0 0 52px 0;
  }

  .page-about .about-line__entry::before {
    left: var(--about-rail);
    top: 10px;
  }

  .page-about .about-line__scale {
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
    gap: 3px;
    padding-top: 2px;
  }

  .page-about .about-line__code {
    font-size: 16px;
    line-height: 1.3;
    overflow-wrap: anywhere;
  }

  .page-about .about-check__item {
    grid-template-columns: 48px minmax(0, 1fr);
  }

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

  .page-about .about-sched__lane--month {
    transform: translateY(14px);
  }

  .page-about .about-version__item {
    grid-template-columns: 130px minmax(0, 1fr);
    column-gap: 20px;
    row-gap: 0;
    align-items: baseline;
    padding-bottom: 20px;
  }

  .page-about .about-version__year {
    text-align: right;
    display: block;
    margin-right: 0;
  }

  .page-about .about-version__q {
    grid-column: 1;
    text-align: right;
    display: block;
  }

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

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .about-hero__panel {
    padding: 28px 26px 22px;
  }

  .page-about .about-line {
    --about-rail: 132px;
  }

  .page-about .about-line__entry {
    grid-template-columns: 112px minmax(0, 1fr);
    column-gap: 40px;
    padding-bottom: 64px;
  }

  .page-about .about-line__code {
    font-size: 18px;
  }

  .page-about .about-line__body--split {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    column-gap: 36px;
    align-items: start;
  }

  .page-about .about-line__body--split > .about-line__main {
    min-width: 0;
  }

  .page-about .about-line__body--split > .about-line__side {
    min-width: 0;
    padding-top: 6px;
  }

  .page-about .about-figure--square {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-aside__link,
  .page-about .about-sched__lane--month {
    transition: none;
    transform: none;
  }
}
<<<END>>>