.page-about {
  --about-index-w: 200px;
  --about-gap: 64px;
  padding-bottom: clamp(56px, 9vw, 96px);
}

.page-about .breadcrumb {
  margin: clamp(16px, 3vw, 28px) 0 clamp(14px, 2.5vw, 22px);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  position: relative;
}

.page-about .about-hero__frame {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(24px, 5vw, 52px) clamp(20px, 4vw, 44px) clamp(28px, 5vw, 56px);
  background:
    radial-gradient(120% 90% at 88% 6%, rgba(87, 32, 58, 0.55) 0%, rgba(10, 26, 47, 0) 62%),
    linear-gradient(160deg, rgba(19, 39, 63, 0.9) 0%, rgba(10, 26, 47, 0.6) 100%);
  overflow: hidden;
}

.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 9px;
  background: repeating-linear-gradient(90deg, var(--line-strong) 0 1px, transparent 1px 26px);
  pointer-events: none;
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 18%, var(--line-strong) 82%, transparent);
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 7.2vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 18ch;
}

.page-about .about-hero__lead {
  margin-top: clamp(16px, 3vw, 26px);
  max-width: 34em;
  color: var(--silver);
  font-size: clamp(0.95rem, 1.6vw, 1.06rem);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: clamp(20px, 3.4vw, 30px);
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

.page-about .about-hero__media {
  margin: clamp(16px, 3vw, 26px) 0 0;
}

/* ---------- 城市点阵 ---------- */
.page-about .city-band {
  margin-top: clamp(44px, 8vw, 84px);
  padding: clamp(22px, 4vw, 40px);
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, var(--teal) 0%, rgba(11, 59, 60, 0.35) 100%);
  border: 1px solid var(--line);
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-about .city-band__head h2 {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.3rem, 3.4vw, 1.85rem);
  line-height: 1.2;
  color: var(--white);
}

.page-about .city-band__text {
  margin: 10px 0 0;
  max-width: 32em;
  font-size: 0.94rem;
  color: var(--silver);
}

.page-about .city-map {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .city-dot {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(10, 26, 47, 0.42);
  transition: border-color 0.2s var(--spring), transform 0.2s var(--spring);
}

.page-about .city-dot:hover,
.page-about .city-dot:focus-within {
  border-color: var(--green);
  transform: translateY(-2px);
}

.page-about .city-dot__pin {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(61, 242, 164, 0.12);
}

.page-about .city-dot__name {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translate(-50%, 4px);
  padding: 3px 9px;
  border-radius: var(--r-pill);
  background: var(--navy-deep);
  border: 1px solid var(--line-strong);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 11px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 3;
}

.page-about .city-dot:hover .city-dot__name,
.page-about .city-dot:focus-within .city-dot__name {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- 双栏主体 ---------- */
.page-about .about-body {
  margin-top: clamp(44px, 8vw, 88px);
  display: grid;
  gap: clamp(28px, 5vw, 48px);
}

.page-about .about-index {
  border-left: 2px solid var(--orange);
  padding-left: 16px;
}

.page-about .about-index__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .about-index__list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  counter-reset: idx;
}

.page-about .about-index__list li {
  counter-increment: idx;
}

.page-about .about-index__list a {
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  color: var(--silver);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-index__list a::before {
  content: counter(idx, decimal-leading-zero) " ";
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mist);
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  color: var(--white);
  border-color: var(--orange);
  background: rgba(255, 90, 40, 0.1);
}

.page-about .about-index__note {
  margin: 18px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
  font-family: var(--font-mono);
  word-break: break-all;
}

/* ---------- 章节流 ---------- */
.page-about .about-flow {
  min-width: 0;
}

.page-about .story-block {
  padding-bottom: clamp(34px, 6vw, 56px);
  margin-bottom: clamp(34px, 6vw, 56px);
  border-bottom: 1px solid var(--line);
}

.page-about .story-block:last-of-type {
  border-bottom: none;
}

.page-about .story-block h2 {
  margin: 10px 0 18px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.4rem, 4vw, 2.15rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .story-block h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1rem, 2.2vw, 1.12rem);
  color: var(--white);
}

.page-about .story-block p {
  margin: 0 0 14px;
  max-width: 36em;
  color: var(--silver);
  font-size: clamp(0.94rem, 1.6vw, 1rem);
  line-height: 1.85;
}

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

/* 酒红注释条 */
.page-about .note-strip {
  margin: 22px 0;
  padding: 14px 18px;
  border-left: 2px solid var(--orange);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: linear-gradient(100deg, rgba(87, 32, 58, 0.85) 0%, rgba(87, 32, 58, 0.35) 100%);
}

.page-about .note-strip p {
  margin: 0;
  max-width: 34em;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--white);
}

/* ---------- 时间轴 ---------- */
.page-about .timeline__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 26px;
}

.page-about .timeline__chip {
  padding: 6px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--silver);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-about .timeline__chip:hover,
.page-about .timeline__chip:focus-visible {
  color: var(--navy-deep);
  background: var(--green);
  border-color: var(--green);
}

.page-about .timeline {
  margin: 0;
  padding: 0 0 0 20px;
  list-style: none;
  border-left: 1px solid var(--line-strong);
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: 26px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--navy);
  border: 2px solid var(--silver);
}

.page-about .timeline__item:first-child::before {
  border-color: var(--orange);
  background: var(--orange);
}

.page-about .timeline__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-about .timeline__body p {
  margin: 6px 0 0;
}

.page-about .timeline__media {
  margin: 28px 0 0;
}

/* ---------- 三段流程 ---------- */
.page-about .workflow__media {
  margin: 22px 0 26px;
}

.page-about .flow-steps {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .flow-step {
  position: relative;
  padding: 18px 18px 18px 22px;
  border-radius: var(--r-md);
  background: var(--graphite);
  border: 1px solid var(--line);
  transition: transform 0.2s var(--spring), border-color 0.2s ease;
}

.page-about .flow-step:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.page-about .flow-step__dot {
  position: absolute;
  left: -5px;
  top: 26px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(61, 242, 164, 0.14);
}

.page-about .flow-step h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--white);
}

.page-about .flow-step p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 团队折叠卡 ---------- */
.page-about .crew {
  display: grid;
  gap: 12px;
  margin: 20px 0 22px;
}

.page-about .crew-card {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--graphite);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.page-about .crew-card[open] {
  border-color: var(--line-strong);
}

.page-about .crew-card summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-about .crew-card summary::-webkit-details-marker {
  display: none;
}

.page-about .crew-card summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--orange);
  margin-left: 4px;
}

.page-about .crew-card[open] summary::after {
  content: "−";
}

.page-about .crew-card__role {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--white);
  flex: 1;
}

.page-about .crew-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--navy-deep);
  background: var(--green);
  padding: 3px 9px;
  border-radius: 6px;
}

.page-about .crew-card p {
  margin: 0;
  padding: 0 18px 18px;
  max-width: 34em;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 合作 ---------- */
.page-about .partner-row {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-about .partner-card {
  padding: 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(11, 59, 60, 0.85) 0%, rgba(10, 26, 47, 0.6) 100%);
}

.page-about .partner-card__num {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  line-height: 1;
  color: var(--green);
}

.page-about .partner-card__label {
  margin: 8px 0 0;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--white);
}

.page-about .partner-card__text {
  margin: 8px 0 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 收尾 CTA ---------- */
.page-about .about-cta {
  margin-top: clamp(20px, 4vw, 34px);
  padding: clamp(24px, 4.5vw, 44px);
  border-radius: var(--r-lg);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(255, 90, 40, 0.28) 0%, rgba(87, 32, 58, 0) 60%),
    linear-gradient(150deg, var(--wine) 0%, var(--navy-deep) 100%);
  border: 1px solid var(--line-strong);
  display: grid;
  gap: 22px;
}

.page-about .about-cta h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.35rem, 3.6vw, 1.9rem);
  line-height: 1.2;
  color: var(--white);
}

.page-about .about-cta p {
  margin: 0;
  max-width: 34em;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--silver);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .city-map {
    grid-template-columns: repeat(12, 1fr);
  }

  .page-about .flow-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .page-about .flow-step__dot {
    left: 50%;
    top: -5px;
    transform: translateX(-50%);
  }

  .page-about .flow-step {
    padding: 24px 18px 18px;
    text-align: left;
  }

  .page-about .partner-row {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-cta {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .page-about .about-cta__links {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-about .city-band {
    grid-template-columns: 320px 1fr;
    align-items: center;
  }

  .page-about .city-map {
    grid-template-columns: repeat(8, 1fr);
  }

  .page-about .about-body {
    grid-template-columns: var(--about-index-w) minmax(0, 1fr);
    gap: var(--about-gap);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 6px;
  }

  .page-about .about-index__list a {
    display: block;
    border-color: transparent;
    padding-left: 0;
  }

  .page-about .about-index__list a:hover,
  .page-about .about-index__list a:focus-visible {
    background: transparent;
    border-color: transparent;
    color: var(--white);
  }

  .page-about .timeline__media {
    width: min(100%, 460px);
    margin-left: auto;
  }

  .page-about .workflow__media {
    float: right;
    width: 46%;
    margin: 6px 0 20px 28px;
  }

  .page-about .flow-steps {
    clear: none;
  }
}

@media (min-width: 1100px) {
  .page-about {
    --about-index-w: 220px;
    --about-gap: 80px;
  }
}

@media (max-width: 619px) {
  .page-about .city-map {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
  }

  .page-about .city-dot {
    aspect-ratio: auto;
    border-radius: var(--r-pill);
    padding: 5px 11px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .page-about .city-dot__pin {
    width: 5px;
    height: 5px;
    box-shadow: none;
  }

  .page-about .city-dot__name {
    position: static;
    transform: none;
    opacity: 1;
    padding: 0;
    border: none;
    background: transparent;
    font-size: 12px;
    color: var(--silver);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .city-dot,
  .page-about .flow-step,
  .page-about .city-dot__name,
  .page-about .about-index__list a {
    transition: none;
  }

  .page-about .city-dot:hover,
  .page-about .flow-step:hover {
    transform: none;
  }
}
<<<END>>>