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

/* ——— 首屏框景 ——— */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--gold-line-soft);
  padding-block: clamp(36px, 6vw, 80px) clamp(48px, 7vw, 96px);
}

.page-about .about-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .about-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}

.page-about .about-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(110% 85% at 86% 26%, rgba(224, 33, 138, 0.28), transparent 62%),
    linear-gradient(100deg, var(--ink-900) 16%, rgba(11, 10, 15, 0.88) 48%, rgba(11, 10, 15, 0.3) 100%);
}

.page-about .about-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__frame {
  max-width: 47rem;
  border: 1px solid var(--gold-line);
  border-left: 3px solid var(--neon);
  background: linear-gradient(180deg, rgba(23, 20, 31, 0.92), rgba(11, 10, 15, 0.74));
  padding: clamp(22px, 3vw, 40px);
  box-shadow: var(--shadow-brut);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 4.4vw, 3.4rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 16px 0 0;
}

.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.9;
  color: var(--mist);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 36px;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--gold-line-soft);
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .about-fact__k {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ——— 起点段落 ——— */
.page-about .about-stanza {
  padding-block: clamp(56px, 8vw, 120px);
}

.page-about .about-stanza__grid {
  align-items: start;
  row-gap: clamp(24px, 3vw, 40px);
}

.page-about .about-stanza__aside {
  position: relative;
  padding-left: 22px;
}

.page-about .about-stanza__aside::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), rgba(232, 198, 132, 0.06));
}

.page-about .about-stanza__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--neon);
}

.page-about .about-stanza__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 2.6vw, 2.25rem);
  line-height: 1.2;
  color: var(--paper);
  margin: 12px 0 0;
}

.page-about .about-stanza__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-stanza__body {
  font-size: 16.5px;
  line-height: 1.95;
  color: var(--mist);
}

.page-about .about-stanza__body p + p {
  margin-top: 1.4em;
}

/* ——— 团队与分工 ——— */
.page-about .about-team__grid {
  margin-top: clamp(28px, 4vw, 48px);
  align-items: start;
  row-gap: clamp(28px, 4vw, 44px);
}

.page-about .role-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 1.8vw, 20px);
}

.page-about .role-card {
  border: 1px solid var(--gold-line-soft);
  border-top: 2px solid var(--gold);
  background: var(--ink-800);
  padding: clamp(18px, 2.2vw, 26px);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-about .role-card:hover,
.page-about .role-card:focus-within {
  transform: translateY(-4px);
  border-top-color: var(--neon);
  border-color: var(--gold-line);
  box-shadow: var(--shadow-brut);
}

.page-about .role-card__num {
  font-family: var(--font-mono);
  font-size: 24px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-about .role-card__title {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--paper);
}

.page-about .role-card__duty {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .flow-strip {
  list-style: none;
  margin: clamp(20px, 2.6vw, 30px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .flow-strip__step {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--gold-line-soft);
  background: rgba(232, 198, 132, 0.04);
  padding: 8px 14px;
  font-size: 13px;
  color: var(--paper);
}

.page-about .flow-strip__step .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--peacock);
}

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

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

/* ——— 发展历程 ——— */
.page-about .about-stages {
  padding-block: clamp(56px, 8vw, 118px);
}

.page-about .stage-line {
  list-style: none;
  margin: clamp(30px, 4vw, 52px) 0 0;
  padding: 0 0 0 clamp(20px, 3vw, 36px);
  position: relative;
}

.page-about .stage-line::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--neon), rgba(232, 198, 132, 0.5) 38%, rgba(232, 198, 132, 0.06));
}

.page-about .stage-line__item {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px) 0 clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--gold-line-soft);
}

.page-about .stage-line__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .stage-line__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * clamp(20px, 3vw, 36px) - 4px);
  top: clamp(26px, 3vw, 36px);
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--gold);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-about .stage-line__item:first-child::before {
  top: 4px;
}

.page-about .stage-line__item:hover::before {
  background: var(--neon);
  border-color: var(--neon);
  box-shadow: 0 0 0 4px rgba(224, 33, 138, 0.18);
}

.page-about .stage-line__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .stage-line__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  line-height: 1.26;
  color: var(--paper);
}

.page-about .stage-line__desc {
  margin: 10px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

.page-about .about-stages__foot {
  margin: clamp(26px, 3.6vw, 44px) 0 0;
  padding-left: clamp(20px, 3vw, 36px);
  max-width: 46em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--paper);
  border-left: 2px solid var(--jade);
  padding-top: 4px;
  padding-bottom: 4px;
}

/* ——— 合作生态 ——— */
.page-about .about-eco {
  position: relative;
  overflow: hidden;
}

.page-about .about-eco__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .about-eco__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-about .about-eco__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(58% 58% at 50% 44%, rgba(31, 169, 160, 0.18), transparent 66%),
    linear-gradient(180deg, rgba(23, 20, 31, 0.86), rgba(11, 10, 15, 0.94));
}

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

.page-about .eco-map {
  position: relative;
  margin-top: clamp(28px, 4vw, 46px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .eco-map__core {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 22px 16px;
  text-align: center;
  border: 1px solid var(--gold-line);
  background: linear-gradient(150deg, rgba(224, 33, 138, 0.22), rgba(11, 10, 15, 0.9));
}

.page-about .eco-map__core-num {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .eco-map__core-txt {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-about .eco-node {
  border: 1px solid var(--gold-line-soft);
  background: rgba(11, 10, 15, 0.74);
  padding: clamp(16px, 2vw, 22px);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.page-about .eco-node:hover {
  transform: translateY(-4px);
  border-color: var(--peacock);
  background: rgba(31, 169, 160, 0.1);
}

.page-about .eco-node__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--paper);
}

.page-about .eco-node__desc {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-eco__foot {
  margin: clamp(26px, 3.6vw, 44px) 0 0;
  max-width: 48em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

/* ——— 整理标准 ——— */
.page-about .about-standard {
  padding-block: clamp(56px, 8vw, 118px);
}

.page-about .about-standard__grid {
  align-items: start;
  row-gap: clamp(26px, 3vw, 42px);
}

.page-about .about-standard__note {
  margin: 14px 0 0;
  max-width: 24em;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .standard-item {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 6px clamp(14px, 2vw, 26px);
  padding: clamp(20px, 2.6vw, 30px) 0;
  border-top: 1px solid var(--gold-line-soft);
}

.page-about .standard-item:first-child {
  border-top-color: var(--gold);
}

.page-about .standard-item__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--neon);
}

.page-about .standard-item__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--paper);
}

.page-about .standard-item__desc {
  grid-column: 2;
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

/* ——— 服务对象 ——— */
.page-about .about-audience__grid {
  margin-top: clamp(28px, 4vw, 46px);
  row-gap: clamp(18px, 2.4vw, 26px);
  align-items: stretch;
}

.page-about .audience-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--gold-line-soft);
  border-left: 3px solid var(--gold);
  background: var(--ink-800);
  padding: clamp(20px, 2.6vw, 30px);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-about .audience-card:nth-child(2) {
  border-left-color: var(--neon);
}

.page-about .audience-card:nth-child(3) {
  border-left-color: var(--peacock);
}

.page-about .audience-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-brut);
}

.page-about .audience-card__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-about .audience-card__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.28rem;
  line-height: 1.32;
  color: var(--paper);
}

.page-about .audience-card__desc {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--mist);
}

/* ——— 收尾 ——— */
.page-about .about-cta {
  padding-block: clamp(48px, 6vw, 92px) clamp(56px, 8vw, 110px);
}

.page-about .about-cta__panel {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  border: 1px solid var(--gold-line);
  border-top: 3px solid var(--neon);
  background: linear-gradient(140deg, rgba(23, 20, 31, 0.97), rgba(11, 10, 15, 0.9));
  padding: clamp(26px, 4vw, 52px);
  box-shadow: var(--shadow-brut-strong);
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  line-height: 1.22;
  color: var(--paper);
}

.page-about .about-cta__lead {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist);
}

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

/* ——— 响应式 ——— */
@media (max-width: 880px) {
  .page-about .grid--12 > [class*="col-"] {
    grid-column: 1 / -1;
  }
}

@media (min-width: 820px) {
  .page-about .about-cta__panel {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 860px) {
  .page-about .eco-map {
    grid-template-columns: 1fr 1fr;
    gap: clamp(30px, 6vw, 78px);
    padding: clamp(20px, 3vw, 40px);
  }

  .page-about .eco-map__core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: clamp(132px, 14vw, 174px);
    height: clamp(132px, 14vw, 174px);
    border-radius: 50%;
    box-shadow: 0 0 44px rgba(224, 33, 138, 0.3);
    z-index: 2;
  }
}

@media (min-width: 900px) {
  .page-about .stage-line__item:nth-child(even) {
    margin-left: clamp(40px, 9%, 140px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .role-card,
  .page-about .eco-node,
  .page-about .audience-card,
  .page-about .stage-line__item::before {
    transition: none;
  }

  .page-about .role-card:hover,
  .page-about .eco-node:hover,
  .page-about .audience-card:hover {
    transform: none;
  }
}