.page-about {
  --about-index-w: 214px;
  font-family: var(--font-body);
  color: var(--graphite-900);
  background: var(--white);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3.5vw, 34px) 0 clamp(34px, 6vw, 76px);
  color: var(--white);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  background:
    radial-gradient(88% 72% at 88% 2%, rgba(15, 181, 201, 0.42), rgba(15, 181, 201, 0) 62%),
    radial-gradient(56% 48% at 2% 98%, rgba(228, 255, 87, 0.13), rgba(228, 255, 87, 0) 72%),
    linear-gradient(158deg, var(--ink-950), var(--ink-900) 48%, var(--ink-800));
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -40% -20%;
  background: repeating-linear-gradient(62deg, rgba(159, 231, 236, 0.085) 0 1px, transparent 1px 72px);
  pointer-events: none;
}

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

.page-about .about-hero .crumbs {
  margin: 0 0 clamp(20px, 3vw, 32px);
  font-size: 13px;
  line-height: 1.6;
  color: rgba(247, 252, 253, 0.62);
}

.page-about .about-hero .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero .crumbs a {
  color: var(--pool-200);
  text-decoration: none;
}

.page-about .about-hero .crumbs a:hover,
.page-about .about-hero .crumbs a:focus-visible {
  color: var(--lemon-400);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 46px);
  align-items: end;
}

.page-about .about-hero__lead .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lemon-400);
}

.page-about h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  overflow-wrap: break-word;
}

.page-about .about-hero__lede {
  margin: clamp(14px, 2.4vw, 22px) 0 0;
  max-width: 50ch;
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.85;
  color: rgba(247, 252, 253, 0.82);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(22px, 3.2vw, 34px) 0 0;
  padding: 18px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__stat {
  display: grid;
  gap: 4px;
}

.page-about .about-hero__statnum {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.6vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--lemon-400);
}

.page-about .about-hero__statlabel {
  font-size: 12.5px;
  line-height: 1.55;
  color: rgba(247, 252, 253, 0.7);
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  border-radius: 28px 28px 28px 92px;
  overflow: hidden;
  aspect-ratio: 16 / 11;
  background: linear-gradient(150deg, var(--pool-500), var(--ink-800));
  box-shadow: 0 32px 72px -44px rgba(4, 30, 43, 0.95);
}

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

.page-about .about-hero__tag {
  position: absolute;
  left: 14px;
  bottom: 14px;
  max-width: calc(100% - 28px);
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  background: rgba(4, 30, 43, 0.74);
  color: var(--pool-200);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.03em;
}

/* ---------- 双栏正文 ---------- */
.page-about .about-layout {
  padding-top: clamp(32px, 5vw, 68px);
  padding-bottom: clamp(32px, 5vw, 68px);
  display: grid;
  gap: clamp(24px, 3.5vw, 52px);
  align-items: start;
}

.page-about .about-index {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 18px 16px;
  background: linear-gradient(172deg, rgba(159, 231, 236, 0.2), rgba(247, 252, 253, 0.92));
}

.page-about .about-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-800);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .about-index__list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-pill);
  color: var(--ink-800);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  background: var(--ink-800);
  color: var(--white);
}

.page-about .about-index__list a span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--pool-500);
}

.page-about .about-index__list a:hover span,
.page-about .about-index__list a:focus-visible span {
  color: var(--lemon-400);
}

.page-about .about-article {
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-about .about-chapter + .about-chapter {
  margin-top: clamp(34px, 5vw, 62px);
  padding-top: clamp(28px, 4vw, 46px);
  border-top: 1px solid rgba(28, 35, 41, 0.09);
}

.page-about .about-chapter__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.page-about .about-chapter__num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 28px;
  padding: 0 10px;
  border-radius: var(--radius-pill);
  background: var(--ink-800);
  color: var(--lemon-400);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about h2 {
  margin: 0;
  min-width: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 3.2vw, 29px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink-950);
  overflow-wrap: break-word;
}

.page-about h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.45;
  color: var(--ink-950);
  overflow-wrap: break-word;
}

.page-about .about-text {
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.85;
}

.page-about .about-text p {
  margin: 0;
}

.page-about .about-text p + p {
  margin-top: 0.9em;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  position: relative;
  margin: 22px 0 0;
  padding: 0 0 0 26px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: repeating-linear-gradient(180deg, var(--pool-500) 0 7px, rgba(15, 181, 201, 0.16) 7px 15px);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 1px solid rgba(28, 35, 41, 0.1);
  box-shadow: 0 18px 34px -32px rgba(4, 30, 43, 0.8);
}

.page-about .about-timeline__item + .about-timeline__item {
  margin-top: 12px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 22px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--lemon-400);
  box-shadow: 0 0 0 4px rgba(228, 255, 87, 0.28);
}

.page-about .about-timeline__stage {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--pool-500);
}

.page-about .about-timeline__item p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--graphite-500);
}

/* ---------- 暖纸区块 ---------- */
.page-about .about-paper {
  position: relative;
  overflow: hidden;
  margin: 24px 0 0;
  padding: clamp(20px, 3.2vw, 30px);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, var(--paper-100), var(--paper-200));
  color: var(--graphite-900);
}

.page-about .about-paper::after {
  content: "";
  position: absolute;
  right: -46px;
  top: -46px;
  width: 156px;
  height: 156px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(15, 181, 201, 0.3), rgba(15, 181, 201, 0));
}

.page-about .about-paper p {
  position: relative;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 2.4vw, 20px);
  line-height: 1.62;
}

.page-about .about-paper cite {
  position: relative;
  display: block;
  margin-top: 10px;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite-500);
}

/* ---------- 配图 ---------- */
.page-about .about-figure {
  margin: 22px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(150deg, var(--pool-200), var(--ink-800));
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-figure figcaption {
  padding: 12px 16px;
  background: var(--white);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--graphite-500);
}

/* ---------- 团队标签页 ---------- */
.page-about .about-team {
  margin-top: 24px;
}

.page-about .about-team__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-team__tab {
  appearance: none;
  border: 1px solid rgba(28, 35, 41, 0.16);
  background: var(--white);
  color: var(--ink-800);
  border-radius: var(--radius-pill);
  padding: 9px 16px;
  font-family: var(--font-body);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-team__tab:hover {
  border-color: var(--pool-500);
  color: var(--pool-500);
}

.page-about .about-team__tab[aria-selected="true"] {
  background: var(--ink-800);
  border-color: var(--ink-800);
  color: var(--white);
}

.page-about .about-team__tab:focus-visible {
  outline: 2px solid var(--coral-500);
  outline-offset: 2px;
}

.page-about .about-team__panel {
  margin-top: 16px;
  padding: clamp(18px, 3vw, 26px);
  border-radius: var(--radius-md);
  border: 1px solid var(--line-strong);
  background: linear-gradient(168deg, rgba(159, 231, 236, 0.17), rgba(247, 252, 253, 0.75));
}

.page-about .about-team__panel[hidden] {
  display: none;
}

.page-about .about-team__panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-team__panel ul {
  margin: 12px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--graphite-500);
}

.page-about .about-link {
  display: inline-block;
  margin-top: 14px;
  color: var(--pool-500);
  font-size: 13.5px;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(15, 181, 201, 0.42);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--coral-500);
  border-color: var(--coral-500);
}

/* ---------- 帮助体系清单 ---------- */
.page-about .about-support {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-support li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px 16px 20px;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 1px solid rgba(28, 35, 41, 0.08);
  border-left: 3px solid var(--pool-500);
  box-shadow: 0 20px 36px -34px rgba(4, 30, 43, 0.85);
}

.page-about .about-support__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--coral-500);
}

.page-about .about-support li div {
  min-width: 0;
}

.page-about .about-support li p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--graphite-500);
}

/* ---------- 备案与联系 ---------- */
.page-about .about-contact-wrap {
  padding-bottom: clamp(40px, 6vw, 84px);
}

.page-about .about-contact {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  padding: clamp(24px, 4.5vw, 52px);
  color: var(--white);
  background:
    radial-gradient(80% 120% at 92% 4%, rgba(15, 181, 201, 0.5), rgba(15, 181, 201, 0) 62%),
    linear-gradient(152deg, var(--ink-950), var(--ink-800));
}

.page-about .about-contact::before {
  content: "";
  position: absolute;
  inset: -30% -10%;
  background: repeating-linear-gradient(62deg, rgba(159, 231, 236, 0.08) 0 1px, transparent 1px 70px);
  pointer-events: none;
}

.page-about .about-contact__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(22px, 3.5vw, 40px);
}

.page-about .about-contact .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lemon-400);
}

.page-about .about-contact h2 {
  color: var(--white);
}

.page-about .about-contact__lede {
  margin: 14px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(247, 252, 253, 0.8);
}

.page-about .about-contact__list {
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-contact__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(159, 231, 236, 0.18);
}

.page-about .about-contact__row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pool-200);
}

.page-about .about-contact__row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--white);
  overflow-wrap: break-word;
}

.page-about .about-contact__actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-contact__figure {
  margin: 0;
  border-radius: 24px 24px 24px 68px;
  overflow: hidden;
  background: linear-gradient(150deg, var(--pool-500), var(--ink-900));
}

.page-about .about-contact__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.78fr);
  }

  .page-about .about-contact__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
  }

  .page-about .about-contact__row {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 12px;
  }
}

@media (min-width: 900px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-index-w) minmax(0, 1fr);
  }

  .page-about .about-index {
    position: sticky;
    top: 24px;
  }
}
<<<END>>>