.page-about {
  --about-rail: 150px;
  --about-gap: clamp(1.5rem, 4vw, 3.5rem);
  --about-cut: 18px;
  background: var(--temple);
  color: var(--cream);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(1.5rem, 4vw, 2.5rem) clamp(2.5rem, 7vw, 5rem);
  background:
    radial-gradient(120% 90% at 78% 8%, rgba(47, 227, 208, 0.10), transparent 58%),
    radial-gradient(90% 80% at 12% 0%, rgba(255, 138, 61, 0.10), transparent 62%),
    var(--temple);
}

.page-about .about-hero__kicker {
  margin: 1.5rem 0 0.75rem;
  color: var(--gold-bright);
  letter-spacing: 0.14em;
}

.page-about .about-hero__title {
  margin: 0 0 clamp(1.25rem, 3vw, 2rem);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 6.4vw, 4.35rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--cream);
  text-shadow: 0 0 34px rgba(240, 208, 122, 0.20), 0 0 60px rgba(47, 227, 208, 0.10);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  align-items: start;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 48ch;
  font-size: clamp(1rem, 1.6vw, 1.14rem);
  line-height: 1.95;
  color: var(--stone);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule-soft);
  border: 1px solid var(--rule-soft);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1rem 1.05rem 1.1rem;
  background: var(--night);
  position: relative;
}

.page-about .about-stat::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 26px;
  height: 2px;
  background: var(--gold);
}

.page-about .about-stat__value {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.6vw, 2.05rem);
  font-weight: 700;
  line-height: 1;
  color: var(--gold-bright);
}

.page-about .about-stat__unit {
  margin-left: 0.15em;
  font-size: 0.55em;
  color: var(--stone);
}

.page-about .about-stat__label {
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  color: var(--stone);
}

.page-about .about-hero__figure {
  margin: clamp(2rem, 5vw, 3.25rem) 0 0;
  border: 1px solid var(--rule);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 32px), calc(100% - 32px) 100%, 0 100%);
  background: #0F0821;
}

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

/* ---------- 展览式纵向章节 ---------- */
.page-about .about-section {
  position: relative;
  padding-block: clamp(2.75rem, 7vw, 5.5rem);
  border-top: 1px solid var(--rule-soft);
}

.page-about .about-section__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-about .about-section__rail {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--rule);
}

.page-about .about-section__num {
  color: var(--gold);
  letter-spacing: 0.12em;
}

.page-about .about-section__tag {
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-about .about-section__title {
  margin: 0 0 1.15rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.45rem, 4vw, 2.35rem);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .about-section__body p {
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.95;
  color: var(--stone);
}

.page-about .about-section__body a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-pull {
  margin: 1.6rem 0 1.9rem;
  padding-left: 1.1rem;
  border-left: 3px solid var(--neon);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.6vw, 1.4rem);
  line-height: 1.65;
  color: var(--gold-bright) !important;
}

/* ---------- 四类内容支柱 ---------- */
.page-about .about-pillars {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .about-pillar {
  position: relative;
  padding: 1.3rem 1.2rem 1.55rem;
  background: var(--night);
  border: 1px solid var(--rule-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
  transition: transform 0.35s ease, border-color 0.3s ease;
}

.page-about .about-pillar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 42px;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--ember));
}

.page-about .about-pillar:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
}

.page-about .about-pillar__idx {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--neon);
}

.page-about .about-pillar__name {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.08rem;
  line-height: 1.4;
  color: var(--gold-bright);
}

.page-about .about-pillar p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--stone);
}

/* ---------- 服务网络 ---------- */
.page-about .about-network__figure {
  margin: 1.75rem 0 0;
  border: 1px solid var(--rule);
  background: #0F0821;
  overflow: hidden;
}

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

.page-about .about-cities {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
}

.page-about .about-city {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.8rem 0.9rem 0.9rem;
  border: 1px solid var(--rule);
  background: rgba(42, 26, 77, 0.55);
  position: relative;
  padding-left: 1.8rem;
}

.page-about .about-city::before {
  content: "";
  position: absolute;
  left: 0.75rem;
  top: 1.05rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 10px var(--neon);
}

.page-about .about-city__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--cream);
}

.page-about .about-city__role {
  color: var(--stone);
}

/* ---------- 发展阶段 ---------- */
.page-about .about-stages {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}

.page-about .about-stage {
  position: relative;
  padding: 1.4rem 1.2rem 1.6rem;
  background: linear-gradient(180deg, rgba(42, 26, 77, 0.9), rgba(27, 16, 51, 0.9));
  border: 1px solid var(--rule-soft);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, 0 100%);
}

.page-about .about-stage__die {
  display: block;
  width: 32px;
  height: 32px;
  color: var(--gold-bright);
  margin-bottom: 0.9rem;
}

.page-about .about-stage__no {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--neon);
}

.page-about .about-stage__name {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.06rem;
  line-height: 1.45;
  color: var(--gold-bright);
}

.page-about .about-stage p {
  margin: 0 0 0.9rem;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--stone);
}

.page-about .about-stage__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.page-about .about-stage__list li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: #DCD5E8;
}

.page-about .about-stage__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 2px;
  background: var(--ember);
}

/* ---------- 团队与维护（奶油纸分区） ---------- */
.page-about .about-section--cream {
  background: var(--cream);
  color: var(--ink);
}

.page-about .about-section--cream .about-section__rail {
  border-left-color: rgba(138, 106, 18, 0.45);
}

.page-about .about-section--cream .about-section__num {
  color: var(--gold-deep);
}

.page-about .about-section--cream .about-section__tag {
  color: #6B6277;
}

.page-about .about-section--cream .about-section__title {
  color: var(--ink);
}

.page-about .about-section--cream .about-section__body p {
  color: #3A3244;
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1.75rem;
}

.page-about .about-team__figure {
  margin: 0;
  border: 1px solid rgba(20, 16, 28, 0.14);
  background: var(--night);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
  overflow: hidden;
}

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

.page-about .about-crews {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .about-crew {
  padding-left: 0.9rem;
  border-left: 2px solid rgba(138, 106, 18, 0.4);
}

.page-about .about-crew__name {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink);
}

.page-about .about-crew p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.85;
  color: #4A4257;
}

.page-about .about-cadence {
  margin: 2rem 0 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid rgba(20, 16, 28, 0.16);
}

.page-about .about-cadence__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.25rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(20, 16, 28, 0.12);
}

.page-about .about-cadence__row dt {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink);
}

.page-about .about-cadence__row dd {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.75;
  color: #4A4257;
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
  margin-top: 1.5rem;
}

.page-about .about-eco__card {
  position: relative;
  padding: 1.4rem 1.2rem 1.5rem;
  background: rgba(42, 26, 77, 0.62);
  border: 1px solid var(--rule-soft);
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
  transition: background 0.3s ease, transform 0.35s ease;
}

.page-about .about-eco__card:hover {
  background: rgba(42, 26, 77, 0.95);
  transform: translateY(-4px);
}

.page-about .about-eco__name {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--gold-bright);
}

.page-about .about-eco__card p {
  margin: 0 0 0.85rem;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--stone);
}

.page-about .about-eco__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.page-about .about-eco__list li {
  position: relative;
  padding-left: 0.9rem;
  font-size: 0.88rem;
  line-height: 1.7;
  color: #CFC7DC;
}

.page-about .about-eco__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  background: var(--neon);
  transform: rotate(45deg);
}

/* ---------- 认可与口碑 ---------- */
.page-about .about-voices {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .about-voice {
  padding: 1.2rem 1.15rem 1.3rem;
  border: 1px solid var(--rule-soft);
  border-left: 3px solid var(--volt);
  background: linear-gradient(90deg, rgba(255, 59, 92, 0.07), rgba(42, 26, 77, 0.5) 60%);
}

.page-about .about-voice__q {
  margin: 0 0 0.6rem !important;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--cream) !important;
}

.page-about .about-voice__a {
  margin: 0 !important;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--stone) !important;
}

.page-about .about-voices__note {
  margin-top: 1.5rem !important;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule-soft);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1rem, 2.4vw, 1.25rem);
  line-height: 1.7;
  color: var(--gold-bright) !important;
}

/* ---------- 开始合作 ---------- */
.page-about .about-section--last {
  border-bottom: 1px solid var(--rule-soft);
}

.page-about .about-cta {
  margin-top: 1.75rem;
  padding: clamp(1.3rem, 4vw, 2rem) clamp(1.1rem, 3.5vw, 1.75rem);
  border: 1px solid var(--rule);
  background:
    radial-gradient(90% 140% at 100% 0%, rgba(47, 227, 208, 0.12), transparent 60%),
    var(--night);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
  display: grid;
  gap: 1.4rem;
}

.page-about .about-cta__info {
  display: grid;
  gap: 0.7rem;
}

.page-about .about-cta__line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem;
  margin: 0 !important;
}

.page-about .about-cta__k {
  color: var(--neon);
  letter-spacing: 0.12em;
}

.page-about .about-cta__v {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--cream);
  word-break: break-word;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .about-cta__tip {
  margin-top: 1.1rem !important;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--stone) !important;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-pillars {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .about-cadence__row {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 1.25rem;
    align-items: baseline;
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 3.5rem);
  }

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

  .page-about .about-section__rail {
    position: sticky;
    top: 118px;
    align-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    padding-left: 1rem;
  }

  .page-about .about-stages {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
    position: relative;
    padding-top: 0.5rem;
  }

  .page-about .about-stages::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), var(--neon), var(--gold), transparent);
    opacity: 0.7;
  }

  .page-about .about-stage:not(:first-child) {
    margin-top: 0.75rem;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 2rem;
    align-items: start;
  }

  .page-about .about-voices {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

@media (min-width: 1100px) {
  .page-about .about-eco {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-eco__card:nth-child(2) {
    transform: translateY(-14px);
  }

  .page-about .about-eco__card:nth-child(2):hover {
    transform: translateY(-18px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-pillar,
  .page-about .about-eco__card {
    transition: none;
  }

  .page-about .about-pillar:hover,
  .page-about .about-eco__card:hover,
  .page-about .about-eco__card:nth-child(2) {
    transform: none;
  }
}