.page-about {
  --about-hair: rgba(110, 139, 255, 0.24);
  --about-panel: rgba(18, 48, 107, 0.62);
  --about-text-soft: rgba(232, 236, 255, 0.78);
  --about-text-dim: rgba(232, 236, 255, 0.58);
  background: var(--ink-900);
  color: var(--ice);
  padding-bottom: clamp(64px, 10vw, 120px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 40px) 0 clamp(48px, 8vw, 96px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -12%;
  width: min(680px, 92vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(30, 79, 216, 0.5), rgba(11, 211, 162, 0.12) 46%, transparent 68%);
  pointer-events: none;
  z-index: 0;
}

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

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 44px);
  margin-top: clamp(26px, 5vw, 54px);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-size: clamp(30px, 8.2vw, 86px);
  font-weight: 200;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--ice);
}

.page-about .about-hero__title strong {
  display: block;
  margin-top: 0.1em;
  font-size: 0.6em;
  font-weight: 900;
  letter-spacing: -0.015em;
  background: linear-gradient(96deg, var(--ice) 12%, var(--amber) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-hero__lede {
  max-width: 34em;
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

.page-about .about-hero__aside {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .about-stat {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  border-radius: var(--r-m);
  background: var(--about-panel);
  border: 1px solid var(--about-hair);
}

.page-about .about-stat__num {
  flex: none;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--line);
  line-height: 1;
}

.page-about .about-stat__text {
  font-size: 13px;
  line-height: 1.6;
  color: var(--about-text-soft);
}

.page-about .about-stat--amber {
  border-color: rgba(245, 184, 65, 0.4);
  background: linear-gradient(140deg, rgba(245, 184, 65, 0.14), rgba(18, 48, 107, 0.5));
}

.page-about .about-stat--amber .about-stat__num {
  color: var(--amber);
}

.page-about .about-stat--jade {
  border-color: rgba(11, 211, 162, 0.36);
}

.page-about .about-stat--jade .about-stat__num {
  color: var(--jade);
}

/* ---------- 主体分栏 ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(34px, 5vw, 56px);
  padding-top: clamp(20px, 4vw, 36px);
}

.page-about .about-index {
  align-self: start;
}

.page-about .about-index .eyebrow {
  margin: 0 0 12px;
}

.page-about .about-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  border-bottom: 2px solid transparent;
  color: var(--slate);
  font-size: 13px;
  line-height: 1.5;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-index__link .mono {
  font-size: 11px;
  letter-spacing: 0.06em;
  opacity: 0.75;
}

.page-about .about-index__link:hover,
.page-about .about-index__link[aria-current="true"] {
  color: var(--ice);
  border-bottom-color: var(--jade);
}

/* ---------- 章节 ---------- */
.page-about .about-sec + .about-sec {
  margin-top: clamp(56px, 9vw, 108px);
}

.page-about .about-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 16px;
}

.page-about .about-sec__head .idx {
  flex: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(11, 211, 162, 0.45);
  color: var(--jade);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .about-sec__head h2 {
  margin: 0;
  font-size: clamp(24px, 4.4vw, 38px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about .about-sec__lede {
  max-width: 36em;
  margin: 0 0 clamp(24px, 4vw, 36px);
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

.page-about .about-sec--panel {
  padding: clamp(26px, 4.5vw, 44px) clamp(20px, 4vw, 40px);
  border-radius: var(--r-l);
  background: linear-gradient(155deg, rgba(18, 48, 107, 0.86), rgba(10, 27, 61, 0.9));
  border: 1px solid var(--about-hair);
}

/* ---------- 三审流程 ---------- */
.page-about .flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: flowstep;
}

.page-about .flow__step {
  position: relative;
  padding: 20px 20px 22px;
  border-radius: var(--r-m);
  background: rgba(4, 16, 42, 0.5);
  border-top: 2px solid rgba(30, 79, 216, 0.7);
}

.page-about .flow__step:nth-child(2) {
  border-top-color: rgba(110, 139, 255, 0.7);
}

.page-about .flow__step:nth-child(3) {
  border-top-color: var(--jade);
}

.page-about .flow__idx {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .flow__title {
  margin: 8px 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--ice);
}

.page-about .flow__text {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-text-soft);
}

/* ---------- 六边形团队 ---------- */
.page-about .hexes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .hex {
  padding: clamp(26px, 6vw, 40px) clamp(22px, 5vw, 34px);
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
  background: linear-gradient(160deg, rgba(30, 79, 216, 0.55), rgba(4, 16, 42, 0.92));
  text-align: center;
  transition: transform 0.24s var(--ease), background 0.24s var(--ease);
}

.page-about .hex:nth-child(2) {
  background: linear-gradient(160deg, rgba(11, 211, 162, 0.34), rgba(4, 16, 42, 0.92));
}

.page-about .hex:nth-child(3) {
  background: linear-gradient(160deg, rgba(245, 184, 65, 0.26), rgba(4, 16, 42, 0.92));
}

.page-about .hex:nth-child(4) {
  background: linear-gradient(160deg, rgba(232, 83, 140, 0.26), rgba(4, 16, 42, 0.92));
}

.page-about .hex:hover,
.page-about .hex:focus-within {
  transform: translateY(-4px);
}

.page-about .hex__num {
  display: block;
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--ice);
}

.page-about .hex__name {
  margin: 8px 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ice);
}

.page-about .hex__duty {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--about-text-soft);
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  margin: clamp(26px, 4vw, 40px) 0 0;
}

.page-about .about-figure .media {
  border-radius: var(--r-m);
  overflow: hidden;
  background: linear-gradient(140deg, #0d2a5e, #04102a);
}

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

.page-about .about-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--about-text-dim);
}

.page-about .about-figure--team {
  max-width: 460px;
}

.page-about .about-figure--lead {
  margin: 0 0 clamp(22px, 3vw, 32px);
}

/* ---------- 时间轴 ---------- */
.page-about .tl {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  top: 18px;
  bottom: 18px;
  left: 21px;
  width: 1px;
  background: linear-gradient(180deg, var(--jade), rgba(110, 139, 255, 0.4) 46%, rgba(110, 139, 255, 0.1));
}

.page-about .tl__item {
  position: relative;
  padding-left: clamp(62px, 10vw, 88px);
  padding-bottom: clamp(22px, 4vw, 34px);
}

.page-about .tl__node {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 1px solid rgba(11, 211, 162, 0.55);
  color: var(--jade);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-about .tl__panel {
  border-radius: var(--r-m);
  background: rgba(18, 48, 107, 0.42);
  border: 1px solid var(--about-hair);
  padding: 14px 18px;
}

.page-about .tl__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  cursor: pointer;
  list-style: none;
}

.page-about .tl__head::-webkit-details-marker {
  display: none;
}

.page-about .tl__head::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--amber);
  line-height: 1;
}

.page-about .tl__panel[open] .tl__head::after {
  content: "–";
}

.page-about .tl__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--ice);
}

.page-about .tl__note {
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--amer);
  color: var(--slate);
}

.page-about .tl__body {
  padding-top: 12px;
  border-top: 1px solid var(--about-hair);
  margin-top: 12px;
}

.page-about .tl__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

/* ---------- 三类材料 ---------- */
.page-about .std {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-about .std__item {
  padding: 20px 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .std__item:last-child {
  border-bottom: 1px solid var(--about-hair);
}

.page-about .std__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--amber);
}

.page-about .std__text {
  margin: 0;
  max-width: 34em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

/* ---------- 四点承诺 ---------- */
.page-about .reasons {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .reasons__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 16px;
  padding: 18px 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .reasons__num {
  grid-row: span 2;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: rgba(110, 139, 255, 0.75);
  line-height: 1.1;
}

.page-about .reasons__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--ice);
}

.page-about .reasons__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-text-soft);
}

/* ---------- 生态 ---------- */
.page-about .eco {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .eco__cell {
  padding: 18px 20px;
  border-radius: var(--r-m);
  background: rgba(18, 48, 107, 0.5);
  border-left: 2px solid var(--blue);
}

.page-about .eco__cell:nth-child(2) {
  border-left-color: var(--amber);
}

.page-about .eco__cell:nth-child(3) {
  border-left-color: var(--jade);
}

.page-about .eco__num {
  display: block;
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ice);
}

.page-about .eco__text {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--about-text-soft);
}

.page-about .eco__tail {
  margin: clamp(22px, 3vw, 30px) 0 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--about-text-dim);
}

.page-about .eco__tail a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 184, 65, 0.45);
}

.page-about .eco__tail a:hover {
  border-bottom-color: var(--amber);
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  margin-top: clamp(52px, 8vw, 96px);
  padding: clamp(28px, 5vw, 48px) clamp(22px, 4vw, 44px);
  border-radius: var(--r-l);
  background:
    radial-gradient(circle at 88% 12%, rgba(245, 184, 65, 0.22), transparent 58%),
    linear-gradient(140deg, rgba(30, 79, 216, 0.5), rgba(4, 16, 42, 0.94));
  border: 1px solid var(--about-hair);
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-size: clamp(22px, 3.6vw, 30px);
  font-weight: 800;
  line-height: 1.25;
}

.page-about .about-cta__text {
  margin: 0 0 22px;
  max-width: 32em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

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

/* ---------- 断点 ---------- */
@media (min-width: 600px) {
  .page-about .hexes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }

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

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

  .page-about .about-hero__aside .about-stat:first-child {
    grid-column: span 2;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 0 clamp(20px, 3vw, 44px);
    align-items: start;
  }

  .page-about .about-hero__head {
    grid-column: 1 / span 8;
  }

  .page-about .about-hero__aside {
    grid-column: 9 / span 4;
    grid-template-columns: 1fr;
    padding-top: 26px;
  }

  .page-about .about-hero__aside .about-stat:first-child {
    grid-column: auto;
  }

  .page-about .about-hero__aside .about-stat:nth-child(2) {
    margin-left: -18px;
  }

  .page-about .about-hero__aside .about-stat:nth-child(3) {
    margin-right: -12px;
  }

  .page-about .std {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 clamp(20px, 3vw, 36px);
  }

  .page-about .std__item {
    border-bottom: 1px solid var(--about-hair);
  }

  .page-about .reasons {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 clamp(20px, 3vw, 40px);
  }
}

@media (min-width: 1000px) {
  .page-about .about-body {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 0 clamp(24px, 3vw, 48px);
  }

  .page-about .about-index {
    grid-column: 1 / span 3;
    position: sticky;
    top: calc(var(--cmd-h) + 24px);
  }

  .page-about .about-index__list {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
    padding: 0;
  }

  .page-about .about-index__link {
    border-bottom: 0;
    border-left: 2px solid transparent;
    padding: 10px 14px;
    white-space: normal;
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link[aria-current="true"] {
    border-bottom-color: transparent;
    border-left-color: var(--jade);
    background: linear-gradient(90deg, rgba(11, 211, 162, 0.12), transparent 88%);
  }

  .page-about .about-flow {
    grid-column: 5 / span 8;
  }

  .page-about .about-sec--panel {
    margin-left: -20px;
    margin-right: -20px;
  }
}

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

  .page-about .hex:hover,
  .page-about .hex:focus-within {
    transform: none;
  }
}
<<<END>>>

.page-about {
  --amer: currentColor;
}