.page-about {
  --about-line: rgba(37, 230, 214, 0.28);
  --about-line-soft: rgba(165, 176, 196, 0.16);
  background: var(--pdc-ink);
  color: var(--pdc-paper);
  font-family: var(--pdc-font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 4.5vw, 52px) 0 clamp(38px, 6vw, 78px);
  background:
    radial-gradient(120% 90% at 78% 0%, rgba(37, 230, 214, 0.16), transparent 62%),
    radial-gradient(80% 70% at 8% 100%, rgba(141, 107, 255, 0.14), transparent 70%),
    linear-gradient(180deg, var(--pdc-curtain), var(--pdc-ink) 82%);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 46px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-about .about-hero__title {
  margin: 12px 0 18px;
  font-family: var(--pdc-font-display);
  font-weight: 900;
  font-size: clamp(34px, 6.4vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--pdc-paper);
}

.page-about .about-hero__lead {
  max-width: 52ch;
  color: var(--pdc-muted);
}

.page-about .about-hero__media {
  margin: 0;
  border-radius: var(--pdc-r-lg);
  overflow: hidden;
  border: 1px solid var(--pdc-hair);
  background: var(--pdc-curtain);
  box-shadow: 0 34px 90px -46px rgba(37, 230, 214, 0.55);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

@media (min-width: 880px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: end;
  }
}

.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line-soft);
  border: 1px solid var(--about-line-soft);
  border-radius: var(--pdc-r-md);
  overflow: hidden;
}

@media (min-width: 720px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: var(--pdc-curtain);
}

.page-about .about-fact__num {
  font-family: var(--pdc-font-mono);
  font-size: clamp(21px, 2.8vw, 29px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--pdc-cyan);
}

.page-about .about-fact__label {
  font-size: 13px;
  color: var(--pdc-muted);
}

/* ---------- 画册跨页主体 ---------- */
.page-about .about-body {
  padding: clamp(36px, 5vw, 72px) 0 clamp(56px, 8vw, 112px);
}

.page-about .about-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 40px);
}

@media (min-width: 960px) {
  .page-about .about-body__grid {
    grid-template-columns: 186px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 66px);
    align-items: start;
  }
  .page-about .about-index {
    position: sticky;
    top: 110px;
  }
}

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

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

.page-about .about-index__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__link {
  display: block;
  flex: 0 0 auto;
  padding: 8px 15px;
  border-radius: var(--pdc-pill);
  border: 1px solid var(--pdc-hair);
  color: var(--pdc-muted);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--pdc-cyan);
  border-color: var(--about-line);
  background: rgba(37, 230, 214, 0.07);
}

@media (min-width: 960px) {
  .page-about .about-index__list {
    display: block;
    overflow: visible;
    border-left: 1px solid var(--about-line-soft);
  }
  .page-about .about-index__link {
    position: relative;
    border: 0;
    border-radius: 0;
    padding: 9px 0 9px 18px;
    white-space: normal;
    background: none;
    font-size: 14px;
  }
  .page-about .about-index__link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 50%;
    width: 2px;
    height: 0;
    background: var(--pdc-cyan);
    transform: translateY(-50%);
    transition: height 0.28s ease;
  }
  .page-about .about-index__link[aria-current="true"] {
    color: var(--pdc-cyan);
    background: none;
  }
  .page-about .about-index__link[aria-current="true"]::before {
    height: 68%;
  }
  .page-about .about-index__link:hover {
    background: none;
  }
}

/* ---------- 章节通用 ---------- */
.page-about .about-chapter {
  padding: clamp(28px, 4vw, 46px) 0;
  border-top: 1px solid var(--about-line-soft);
}

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

.page-about .about-chapter__title {
  margin: 10px 0 0;
  font-family: var(--pdc-font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.3vw, 35px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--pdc-paper);
}

.page-about .about-chapter__body {
  margin-top: 18px;
  display: grid;
  gap: 16px;
  max-width: 70ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--pdc-muted);
}

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

.page-about .about-chapter__body h3 {
  margin: 0;
}

.page-about .about-inline-link {
  color: var(--pdc-mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 248, 240, 0.4);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--pdc-cyan);
  border-bottom-color: var(--pdc-cyan);
}

/* ---------- 五要素 ---------- */
.page-about .about-fields {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-fields li {
  padding: 6px 15px;
  border-radius: var(--pdc-pill);
  border: 1px solid rgba(37, 230, 214, 0.32);
  background: rgba(37, 230, 214, 0.06);
  color: var(--pdc-mist);
  font-size: 13px;
  line-height: 1.6;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 26px 30px;
  border-left: 1px solid var(--about-line-soft);
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--pdc-ink);
  border: 2px solid var(--pdc-cyan);
  box-shadow: 0 0 0 4px rgba(37, 230, 214, 0.12);
}

.page-about .about-timeline__item:nth-child(even)::before {
  border-color: var(--pdc-violet);
  box-shadow: 0 0 0 4px rgba(141, 107, 255, 0.14);
}

.page-about .about-timeline__year {
  display: inline-block;
  font-family: var(--pdc-font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--pdc-cyan);
}

.page-about .about-timeline__item:nth-child(even) .about-timeline__year {
  color: var(--pdc-violet);
}

.page-about .about-timeline__name {
  margin: 4px 0 6px;
  font-family: var(--pdc-font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--pdc-paper);
}

.page-about .about-timeline__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--pdc-muted);
}

/* ---------- 服务版图 ---------- */
.page-about .about-map__figure {
  margin: 0;
  border-radius: var(--pdc-r-md);
  overflow: hidden;
  border: 1px solid var(--pdc-hair);
  background: var(--pdc-curtain);
}

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

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

.page-about .about-city {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  border-radius: var(--pdc-pill);
  border: 1px solid var(--pdc-hair);
  background: rgba(13, 23, 48, 0.72);
  color: var(--pdc-paper);
  font-size: 13.5px;
  line-height: 1.5;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.page-about .about-city:hover {
  border-color: rgba(255, 184, 77, 0.6);
  background: rgba(255, 184, 77, 0.09);
  color: var(--pdc-amber);
}

.page-about .about-city__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--pdc-amber);
  flex: 0 0 auto;
}

.page-about .about-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 15px 17px;
  border-radius: var(--pdc-r-sm);
  border: 1px solid var(--pdc-hair);
  background: rgba(13, 23, 48, 0.72);
}

.page-about .about-stat__num {
  font-family: var(--pdc-font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--pdc-violet);
}

.page-about .about-stat__label {
  font-size: 12.5px;
  color: var(--pdc-muted);
}

/* ---------- 团队 ---------- */
.page-about .about-team__figure {
  margin: 0;
  border-radius: var(--pdc-r-md);
  overflow: hidden;
  border: 1px solid var(--pdc-hair);
  background: var(--pdc-curtain);
}

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

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

@media (min-width: 700px) {
  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-role {
  padding: 16px 18px;
  border-radius: var(--pdc-r-sm);
  border: 1px solid var(--pdc-hair);
  background: linear-gradient(180deg, rgba(28, 44, 77, 0.45), rgba(13, 23, 48, 0.55));
}

.page-about .about-role__name {
  font-family: var(--pdc-font-display);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--pdc-paper);
  padding-left: 12px;
  position: relative;
}

.page-about .about-role__name::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 14px;
  border-radius: 2px;
  background: var(--pdc-cyan);
}

.page-about .about-role__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--pdc-muted);
}

/* ---------- 结算服务（浅色板块） ---------- */
.page-about .about-chapter--paper {
  margin: clamp(22px, 3.5vw, 38px) 0;
  padding: clamp(22px, 3.6vw, 42px);
  border: 1px solid rgba(232, 237, 245, 0.5);
  border-top: 1px solid rgba(232, 237, 245, 0.5);
  border-radius: var(--pdc-r-lg);
  background: linear-gradient(158deg, #eef2f8, #cfd9e7);
  color: #10192c;
}

.page-about .about-chapter--paper .pdc-eyebrow {
  color: #5a6a86;
}

.page-about .about-chapter--paper .about-chapter__title {
  color: #0b1222;
}

.page-about .about-chapter--paper .about-chapter__body {
  max-width: none;
  color: #33415c;
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 15px 17px;
  border-radius: var(--pdc-r-sm);
  border: 1px solid rgba(11, 18, 34, 0.12);
  background: rgba(7, 11, 24, 0.05);
}

.page-about .about-step__num {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: #0d1730;
  color: var(--pdc-cyan);
  font-family: var(--pdc-font-mono);
  font-size: 14px;
  font-weight: 700;
}

.page-about .about-step__text {
  font-size: 15px;
  line-height: 1.75;
  color: #1c2c4d;
}

.page-about .about-ledger {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

@media (min-width: 720px) {
  .page-about .about-ledger {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-ledger__item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 15px;
  border-radius: var(--pdc-r-sm);
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(11, 18, 34, 0.1);
}

.page-about .about-ledger__num {
  font-family: var(--pdc-font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #0a3f4d;
}

.page-about .about-ledger__label {
  font-size: 12.5px;
  line-height: 1.6;
  color: #4d5c78;
}

.page-about .about-paper-note {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(11, 18, 34, 0.18);
  font-size: 14px;
  line-height: 1.8;
  color: #3b4a66;
}

/* ---------- 选择理由 ---------- */
.page-about .about-pills {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-pill {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 17px;
  border-radius: var(--pdc-pill);
  border: 1px solid var(--pdc-hair);
  background: linear-gradient(180deg, rgba(28, 44, 77, 0.5), rgba(13, 23, 48, 0.55));
  color: var(--pdc-paper);
  font-size: 13.5px;
  line-height: 1.6;
}

.page-about .about-pill b {
  font-family: var(--pdc-font-mono);
  font-weight: 700;
  font-size: 15px;
  color: var(--pdc-cyan);
}

.page-about .about-pill:nth-child(3n) b {
  color: var(--pdc-amber);
}

.page-about .about-pill:nth-child(4n) b {
  color: var(--pdc-violet);
}

.page-about .about-cta {
  margin-top: clamp(24px, 3.5vw, 38px);
  padding: clamp(22px, 3.4vw, 34px);
  border-radius: var(--pdc-r-lg);
  border: 1px solid var(--pdc-hair);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(141, 107, 255, 0.2), transparent 62%),
    radial-gradient(120% 140% at 100% 100%, rgba(37, 230, 214, 0.14), transparent 65%),
    var(--pdc-curtain);
}

.page-about .about-cta__title {
  margin: 0 0 10px;
  font-family: var(--pdc-font-display);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 800;
  color: var(--pdc-paper);
}

.page-about .about-cta__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--pdc-muted);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__link,
  .page-about .about-index__link::before,
  .page-about .about-city,
  .page-about .about-inline-link {
    transition: none;
  }
}
</main>