.page-about {
  --about-line: rgba(232, 192, 112, .30);
  --about-hair: rgba(243, 240, 232, .10);
  --about-panel: #171226;
  --about-panel-2: #221A38;
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: 26px;
  padding-bottom: 4px;
}

.page-about .about-crumb__nav ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--haze);
}

.page-about .about-crumb__nav li + li::before {
  content: "/";
  margin-right: 10px;
  color: rgba(232, 192, 112, .5);
}

.page-about .about-crumb__nav a {
  color: var(--haze);
  text-decoration: none;
  transition: color .24s var(--ease);
}

.page-about .about-crumb__nav a:hover,
.page-about .about-crumb__nav a:focus-visible {
  color: var(--gold-hi);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 26px 0 66px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -160px;
  right: -120px;
  width: min(900px, 92vw);
  height: min(900px, 92vw);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 192, 112, .14) 0%, rgba(232, 192, 112, 0) 66%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: 34px;
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-size: clamp(1.85rem, 7vw, 3.5rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: .09em;
  color: var(--paper);
}

.page-about .about-hero__text {
  max-width: 46ch;
  margin: 22px 0 0;
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(243, 240, 232, .82);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
  margin: 34px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--about-hair);
  list-style: none;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-hero__facts .num {
  font-family: var(--font-num);
  font-size: 1.9rem;
  line-height: 1;
  color: var(--gold);
}

.page-about .about-hero__fact-label {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--haze);
}

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

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 58px), calc(100% - 58px) 100%, 0 100%);
  filter: saturate(.92) contrast(1.06);
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, rgba(232, 192, 112, .24) 0%, rgba(232, 192, 112, 0) 42%);
  mix-blend-mode: overlay;
  pointer-events: none;
}

.page-about .about-hero__media .note-vertical {
  position: absolute;
  right: -6px;
  bottom: 62px;
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: .34em;
  color: rgba(232, 192, 112, .75);
}

/* ---------- 通用区段 ---------- */
.page-about .section-head {
  margin-bottom: 34px;
}

.page-about .about-lede {
  max-width: 58ch;
  margin: 16px 0 0;
  font-size: .975rem;
  line-height: 1.9;
  color: rgba(243, 240, 232, .74);
}

.page-about .about-aside {
  margin: 30px 0 0;
  padding: 16px 0 0 18px;
  border-left: 1px solid var(--about-line);
  font-size: .9rem;
  line-height: 1.85;
  color: var(--haze);
}

.page-about .about-aside a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 192, 112, .35);
}

.page-about .about-aside a:hover,
.page-about .about-aside a:focus-visible {
  color: var(--gold-hi);
  border-bottom-color: var(--gold-hi);
}

/* ---------- 发展脉络 ---------- */
.page-about .about-trail {
  padding: 68px 0 72px;
  background:
    radial-gradient(ellipse 720px 420px at 12% 20%, rgba(52, 227, 208, .07), transparent 70%),
    var(--ink);
}

.page-about .trail {
  margin: 0;
  padding: 4px 0 0 26px;
  border-left: 1px solid var(--about-line);
  list-style: none;
}

.page-about .trail__item {
  position: relative;
  padding-bottom: 48px;
}

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

.page-about .trail__item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--velvet);
  border: 1px solid rgba(168, 162, 188, .7);
  transition: background .5s var(--ease), border-color .5s var(--ease), box-shadow .5s var(--ease);
}

.page-about .trail__item.is-in::before {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 5px rgba(52, 227, 208, .13);
}

.page-about .trail__year {
  margin: 0;
  font-family: var(--font-num);
  font-size: 1.7rem;
  line-height: 1;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-about .trail__title {
  margin: 10px 0 0;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--paper);
}

.page-about .trail__text {
  max-width: 60ch;
  margin: 14px 0 0;
  font-size: .95rem;
  line-height: 1.92;
  color: rgba(243, 240, 232, .78);
}

.page-about .trail__item--media {
  display: grid;
  gap: 26px;
}

.page-about .trail__media {
  margin: 4px 0 0;
  max-width: 400px;
}

.page-about .trail__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
  border: 1px solid var(--about-hair);
}

/* ---------- 六类分区 ---------- */
.page-about .about-zones {
  padding: 72px 0;
  background: var(--velvet);
  border-top: 1px solid var(--about-hair);
  border-bottom: 1px solid var(--about-hair);
}

.page-about .zones {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .zone {
  position: relative;
  grid-column: span 6;
  padding: 30px 24px 30px;
  background: linear-gradient(158deg, #1B1430 0%, #120E20 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
  transition: transform .42s var(--ease), background .42s var(--ease);
}

.page-about .zone::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 58px;
  height: 2px;
  background: var(--backdrop-gilt);
}

.page-about .zone:hover,
.page-about .zone:focus-within {
  transform: translateY(-6px);
  background: linear-gradient(158deg, #241B3D 0%, #16112A 100%);
}

.page-about .zone__no {
  display: block;
  font-family: var(--font-num);
  font-size: 1.25rem;
  letter-spacing: .18em;
  color: rgba(232, 192, 112, .72);
}

.page-about .zone__name {
  margin: 12px 0 0;
  font-size: 1.16rem;
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--paper);
}

.page-about .zone__text {
  margin: 12px 0 0;
  font-size: .93rem;
  line-height: 1.88;
  color: rgba(243, 240, 232, .76);
}

.page-about .zone__meta {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(52, 227, 208, .26);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

/* ---------- 团队 ---------- */
.page-about .about-crew {
  padding: 72px 0;
  background: var(--ink);
}

.page-about .crew {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .crew__card {
  position: relative;
  padding: 30px 22px 26px;
  background: var(--about-panel);
  border: 1px solid var(--about-hair);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  transition: transform .42s var(--ease), background .42s var(--ease), border-color .42s var(--ease);
}

.page-about .crew__card:hover,
.page-about .crew__card:focus-within {
  transform: translateY(-8px);
  background: var(--about-panel-2);
  border-color: rgba(232, 192, 112, .42);
}

.page-about .crew__no {
  display: block;
  font-family: var(--font-num);
  font-size: 1.1rem;
  letter-spacing: .2em;
  color: var(--gold);
}

.page-about .crew__name {
  margin: 14px 0 0;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--paper);
}

.page-about .crew__text {
  margin: 12px 0 0;
  font-size: .9rem;
  line-height: 1.85;
  color: rgba(243, 240, 232, .76);
}

.page-about .crew__tag {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(232, 192, 112, .18);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--haze);
  transition: color .34s var(--ease);
}

.page-about .crew__card:hover .crew__tag,
.page-about .crew__card:focus-within .crew__tag {
  color: var(--gold-hi);
}

.page-about .crew__media {
  margin: 40px 0 0;
}

.page-about .crew__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(30px 0, 100% 0, 100% 100%, 0 100%, 0 30px);
  filter: brightness(.86) contrast(1.08);
}

.page-about .crew__media figcaption {
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--haze);
}

/* ---------- 权益 ---------- */
.page-about .about-tiers {
  padding: 72px 0;
  background:
    radial-gradient(ellipse 700px 460px at 82% 12%, rgba(255, 77, 141, .10), transparent 68%),
    linear-gradient(168deg, #4A0F27 0%, var(--wine) 46%, #2A0716 100%);
}

.page-about .tiers {
  position: relative;
}

.page-about .tiers__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-about .tiers__tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .tiers__tab {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 16px;
  background: rgba(10, 10, 15, .5);
  border: 1px solid rgba(243, 240, 232, .14);
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: background .34s var(--ease), border-color .34s var(--ease), transform .34s var(--ease);
}

.page-about .tiers__tab:hover {
  border-color: rgba(232, 192, 112, .55);
}

.page-about .tiers__rank {
  font-family: var(--font-num);
  font-size: 1.2rem;
  letter-spacing: .2em;
  color: rgba(232, 192, 112, .7);
}

.page-about .tiers__label {
  font-size: .98rem;
  font-weight: 800;
  letter-spacing: .16em;
  color: var(--paper);
}

.page-about .tiers__panels {
  margin-top: 18px;
}

.page-about .tiers__panel {
  display: none;
  padding: 30px 24px;
  background: rgba(10, 10, 15, .62);
  border: 1px solid rgba(232, 192, 112, .3);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-about .tiers__panel-title {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--gold-hi);
}

.page-about .tiers__list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .tiers__list li {
  position: relative;
  padding: 0 0 0 20px;
  margin-bottom: 14px;
  font-size: .93rem;
  line-height: 1.88;
  color: rgba(243, 240, 232, .82);
}

.page-about .tiers__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

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

.page-about #tier-silver:checked ~ .tiers__tabs label[for="tier-silver"],
.page-about #tier-gold:checked ~ .tiers__tabs label[for="tier-gold"],
.page-about #tier-platinum:checked ~ .tiers__tabs label[for="tier-platinum"],
.page-about #tier-diamond:checked ~ .tiers__tabs label[for="tier-diamond"] {
  background: rgba(232, 192, 112, .16);
  border-color: var(--gold);
}

.page-about #tier-silver:checked ~ .tiers__panels .tiers__panel[data-tier="silver"],
.page-about #tier-gold:checked ~ .tiers__panels .tiers__panel[data-tier="gold"],
.page-about #tier-platinum:checked ~ .tiers__panels .tiers__panel[data-tier="platinum"],
.page-about #tier-diamond:checked ~ .tiers__panels .tiers__panel[data-tier="diamond"] {
  display: block;
}

.page-about .tiers__radio:focus-visible ~ .tiers__tabs .tiers__tab {
  outline: 2px solid var(--gold-hi);
  outline-offset: 2px;
}

.page-about .tiers__foot {
  margin-top: 32px;
  padding: 22px 0 0;
  border-top: 1px solid rgba(232, 192, 112, .22);
}

.page-about .tiers__foot p {
  max-width: 62ch;
  margin: 0;
  font-size: .92rem;
  line-height: 1.9;
  color: rgba(243, 240, 232, .8);
}

.page-about .tiers__foot a {
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid rgba(247, 226, 174, .42);
}

.page-about .tiers__foot a:hover,
.page-about .tiers__foot a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  padding: 72px 0;
  background: var(--ink);
}

.page-about .partners {
  display: grid;
  gap: 44px;
}

.page-about .ring {
  position: relative;
  width: min(100%, 420px);
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  border-radius: 50%;
  border: 1px dashed rgba(232, 192, 112, .3);
}

.page-about .ring::after {
  content: "";
  position: absolute;
  inset: 14%;
  border-radius: 50%;
  border: 1px solid rgba(52, 227, 208, .18);
}

.page-about .ring__core {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 46%;
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  border-radius: 50%;
  text-align: center;
  background: radial-gradient(circle at 50% 28%, #2A2045 0%, #120D20 72%);
  border: 1px solid rgba(232, 192, 112, .42);
  box-shadow: var(--shadow-lift);
}

.page-about .ring__core-name {
  font-size: .84rem;
  font-weight: 800;
  letter-spacing: .1em;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .ring__core-sub {
  font-family: var(--font-num);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--gold);
}

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

.page-about .ring__node {
  position: absolute;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  min-width: 116px;
  text-align: center;
  background: rgba(23, 18, 38, .92);
  border: 1px solid rgba(232, 192, 112, .34);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: border-color .34s var(--ease), background .34s var(--ease);
}

.page-about .ring__node:hover {
  border-color: var(--cyan);
  background: rgba(34, 26, 56, .96);
}

.page-about .ring__node--a {
  left: 50%;
  top: 2%;
}

.page-about .ring__node--b {
  left: 8%;
  top: 82%;
}

.page-about .ring__node--c {
  left: 92%;
  top: 82%;
}

.page-about .ring__node-k {
  font-size: .88rem;
  font-weight: 800;
  letter-spacing: .14em;
  color: var(--paper);
}

.page-about .ring__node-d {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--haze);
}

.page-about .partners__side-title {
  margin: 0 0 12px;
  font-size: 1.06rem;
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-about .partners__side-title + .partners__side-text {
  margin-top: 0;
}

.page-about .partners__side-text {
  max-width: 52ch;
  margin: 0 0 30px;
  font-size: .93rem;
  line-height: 1.92;
  color: rgba(243, 240, 232, .76);
}

/* ---------- 收尾 ---------- */
.page-about .about-close {
  padding: 0 0 84px;
  background: var(--ink);
}

.page-about .about-close__panel {
  position: relative;
  padding: 44px 26px;
  background: linear-gradient(150deg, #1C1531 0%, #100C1D 72%);
  border: 1px solid rgba(232, 192, 112, .28);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), calc(100% - 40px) 100%, 0 100%);
}

.page-about .about-close__panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 96px;
  height: 2px;
  background: var(--backdrop-gilt);
}

.page-about .about-close__title {
  margin: 14px 0 0;
  font-size: clamp(1.4rem, 5vw, 2rem);
  font-weight: 900;
  letter-spacing: .1em;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-close__text {
  max-width: 60ch;
  margin: 18px 0 0;
  font-size: .95rem;
  line-height: 1.92;
  color: rgba(243, 240, 232, .8);
}

.page-about .about-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.page-about .about-close__btn {
  min-width: 150px;
  text-align: center;
}

.page-about .about-close__btn--ghost {
  border-color: rgba(243, 240, 232, .28);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-hero__facts {
    gap: 14px 46px;
  }

  .page-about .tiers__tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-about .tiers__tab {
    margin-left: -1px;
  }

  .page-about .tiers__tab:first-child {
    margin-left: 0;
  }

  .page-about .tiers__panel {
    padding: 38px 36px;
  }

  .page-about .zones {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .zone--lead {
    grid-column: span 4;
  }

  .page-about .zone--side {
    grid-column: span 2;
  }

  .page-about .zone {
    grid-column: span 3;
  }

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

  .page-about .about-close__panel {
    padding: 54px 48px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 44px 0 92px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.02fr .98fr;
    align-items: end;
    gap: 56px;
  }

  .page-about .about-hero__media img {
    min-height: 480px;
  }

  .page-about .rail {
    position: relative;
    padding-left: 96px;
  }

  .page-about .rail::before {
    content: "";
    position: absolute;
    left: 34px;
    top: 4px;
    bottom: 4px;
    width: 1px;
    background: linear-gradient(180deg, transparent, var(--about-line) 8%, var(--about-line) 92%, transparent);
  }

  .page-about .trail__item--media {
    grid-template-columns: minmax(0, 1fr) 340px;
    align-items: start;
    gap: 40px;
  }

  .page-about .trail__media {
    margin-top: 0;
    max-width: none;
  }

  .page-about .crew {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .partners {
    grid-template-columns: minmax(0, 420px) minmax(0, 1fr);
    align-items: center;
    gap: 64px;
  }

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

  .page-about .about-close__panel {
    padding: 64px 72px;
  }

  .page-about .about-close__text {
    max-width: 66ch;
  }
}
<<<END>>>