.page-about {
  --about-body: #C6DBD2;
  --about-gap: clamp(20px, 4vw, 48px);
  background:
    radial-gradient(140% 90% at 86% -14%, rgba(57, 245, 200, 0.13), transparent 62%),
    radial-gradient(100% 70% at -10% 104%, rgba(255, 107, 44, 0.11), transparent 60%),
    var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  padding: clamp(16px, 4vw, 30px) 0 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(22px, 5vw, 48px) 0 clamp(36px, 6vw, 76px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 40px);
  align-items: start;
}

.page-about .about-hero__copy .eyebrow {
  color: var(--pulse);
  margin: 0;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.3rem, 8.5vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: 0.01em;
  margin: 12px 0 16px;
  max-width: 15ch;
}

.page-about .about-hero .lede {
  color: var(--about-body);
  font-size: clamp(15px, 3.6vw, 17px);
  line-height: 1.8;
  max-width: 46ch;
  margin: 0;
}

.page-about .about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 4vw, 38px);
  list-style: none;
  margin: clamp(24px, 4vw, 34px) 0 0;
  padding: 0;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 92px;
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.7rem, 5vw, 2.4rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--pulse);
}

.page-about .about-stat__label {
  font-size: 12.5px;
  line-height: 1.5;
  letter-spacing: 0.03em;
  color: var(--muted);
  max-width: 15ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3.5vw, 34px);
}

.page-about .about-hero__visual {
  position: relative;
  margin: 0;
}

.page-about .about-hero__visual::before {
  content: "";
  position: absolute;
  right: 6%;
  bottom: -12px;
  width: 96px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--signal));
  transform: rotate(-36deg);
  transform-origin: right center;
  pointer-events: none;
}

.page-about .about-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-about .about-hero__visual figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 章节网格 ---------- */
.page-about .about-chapter {
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(36px, 5vw, 64px);
}

.page-about .about-cols {
  display: grid;
  gap: clamp(16px, 3vw, 26px);
}

.page-about .about-note {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-left: 12px;
  border-left: 2px solid var(--pulse);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-note__num {
  font-size: 22px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: transparent;
  -webkit-text-stroke: 1px var(--pulse);
}

.page-about .about-main h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 5.2vw, 2.5rem);
  line-height: 1.08;
  letter-spacing: 0.01em;
  margin: 0 0 16px;
}

.page-about .about-main h3 {
  margin: 0;
}

.page-about .about-main p {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--about-body);
  max-width: 64ch;
  margin: 0 0 14px;
}

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

/* ---------- 四个小组 ---------- */
.page-about .about-crew {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: clamp(20px, 3vw, 28px) 0 0;
}

.page-about .about-crew__item {
  background: var(--ink-2);
  padding: clamp(16px, 3vw, 22px);
}

.page-about .about-crew__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--sand);
}

.page-about .about-crew__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.12rem;
  letter-spacing: 0.02em;
  color: var(--paper);
  margin: 8px 0 8px;
}

.page-about .about-crew__text {
  font-size: 13.8px;
  line-height: 1.72;
  color: var(--about-body);
  margin: 0;
}

/* ---------- 更新节奏 ---------- */
.page-about .about-rhythm {
  list-style: none;
  margin: clamp(22px, 3.4vw, 32px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-rhythm li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-rhythm__time {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.06em;
  color: var(--pulse);
}

.page-about .about-rhythm__text {
  font-size: 14.2px;
  line-height: 1.72;
  color: var(--about-body);
}

/* ---------- 配图 ---------- */
.page-about .about-figure {
  margin: clamp(24px, 4vw, 34px) 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 版本时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  margin: clamp(22px, 3.4vw, 32px) 0 0;
  padding-left: clamp(16px, 4vw, 30px);
}

.page-about .about-timeline__trace {
  position: absolute;
  left: 0;
  top: 6px;
  width: clamp(16px, 4vw, 30px);
  height: calc(100% - 12px);
  opacity: 0.75;
  pointer-events: none;
}

.page-about .about-version {
  position: relative;
  z-index: 1;
  border: 1px solid var(--line);
  background: rgba(11, 42, 32, 0.82);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-about .about-version + .about-version {
  margin-top: 12px;
}

.page-about .about-version[open] {
  border-color: var(--pulse);
  background: rgba(16, 58, 43, 0.92);
}

.page-about .about-version > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
}

.page-about .about-version > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-version__year {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--pulse);
}

.page-about .about-version__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  letter-spacing: 0.02em;
  color: var(--paper);
  line-height: 1.25;
}

.page-about .about-version__mark::after {
  content: "+";
  display: block;
  width: 18px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--signal);
}

.page-about .about-version[open] .about-version__mark::after {
  content: "−";
  color: var(--pulse);
}

.page-about .about-version__body {
  padding: 0 16px 16px;
}

.page-about .about-version__body p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-body);
  margin: 0;
  max-width: 56ch;
}

/* ---------- 城市坐标 ---------- */
.page-about .about-cities {
  list-style: none;
  margin: clamp(22px, 3.4vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
}

.page-about .about-city {
  position: relative;
  padding: 12px 12px 12px 30px;
  border: 1px solid var(--line);
  background: rgba(16, 58, 43, 0.45);
  font-size: 13.2px;
  line-height: 1.5;
  color: var(--about-body);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .about-city::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 16px;
  width: 8px;
  height: 8px;
  background: var(--pulse);
  transform: rotate(45deg);
  transition: background-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-about .about-city:hover {
  background: rgba(16, 58, 43, 0.85);
  border-color: var(--pulse);
}

.page-about .about-city:hover::before {
  background: var(--signal);
  transform: rotate(45deg) scale(1.3);
}

.page-about .about-city__coord {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--sand);
  margin-bottom: 5px;
}

.page-about .about-city__name {
  display: block;
}

/* ---------- 荣誉 ---------- */
.page-about .about-honor {
  list-style: none;
  margin: clamp(22px, 3.4vw, 30px) 0 0;
  padding: 0;
}

.page-about .about-honor li {
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(57, 245, 200, 0.1), rgba(255, 107, 44, 0.08));
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .about-honor li + li {
  margin-top: 10px;
}

.page-about .about-honor__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--sand);
  margin-bottom: 6px;
}

.page-about .about-honor__title {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

/* ---------- 规模 ---------- */
.page-about .about-scale {
  display: grid;
  gap: clamp(16px, 3vw, 26px);
  margin: clamp(22px, 3.4vw, 32px) 0 clamp(18px, 3vw, 26px);
}

.page-about .about-scale__item {
  border-top: 2px solid var(--pulse);
  padding-top: 12px;
}

.page-about .about-scale__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2rem, 7vw, 3rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .about-scale__num small {
  font-family: var(--font-body);
  font-size: 0.38em;
  font-weight: 500;
  color: var(--muted);
  margin-left: 4px;
  letter-spacing: 0;
}

.page-about .about-scale__label {
  display: block;
  margin-top: 8px;
  font-size: 13.2px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  margin-top: clamp(36px, 6vw, 72px);
  padding: clamp(30px, 5vw, 52px) 0 clamp(40px, 6vw, 68px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 107, 44, 0.08), transparent 70%);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 18px;
}

.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.6vw, 2.2rem);
  line-height: 1.1;
  margin: 0 0 10px;
}

.page-about .about-cta p {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.75;
  color: var(--about-body);
  max-width: 50ch;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-rhythm li {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }

  .page-about .about-version > summary {
    padding: 16px 20px;
    gap: 18px;
  }

  .page-about .about-version__body {
    padding: 0 20px 18px;
  }
}

@media (min-width: 720px) {
  .page-about .about-crew {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-cols {
    grid-template-columns: 164px minmax(0, 1fr);
    column-gap: clamp(24px, 4vw, 56px);
  }

  .page-about .about-note {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 12px 0 0;
    border-left: 0;
    border-top: 2px solid var(--pulse);
  }

  .page-about .about-note__num {
    font-size: 26px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: clamp(24px, 4vw, 56px);
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    column-gap: clamp(32px, 4vw, 64px);
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-about .about-crew {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

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