.page-about {
  --about-idx-w: 132px;
  --about-cut: 18px;
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(20px, 4vw, 44px) 0 clamp(32px, 5vw, 60px);
  border-bottom: 1px solid var(--c-line);
  background:
    radial-gradient(120% 92% at 88% -12%, rgba(200, 255, 60, 0.07), transparent 62%),
    radial-gradient(72% 62% at 2% 112%, rgba(255, 122, 26, 0.06), transparent 60%);
}

.page-about .about-hero__eyebrow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 20px;
}

.page-about .about-hero__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-muted);
}

.page-about .about-hero__title {
  margin: 0;
  max-width: 20ch;
  font-size: clamp(29px, 6.2vw, 58px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.018em;
  color: var(--c-ink);
}

.page-about .about-hero__lead {
  margin: clamp(18px, 3vw, 28px) 0 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--c-muted);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-about .about-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 18px;
  background: var(--c-panel);
}

.page-about .about-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4.6vw, 38px);
  font-weight: 600;
  line-height: 1;
  color: var(--c-neon);
}

.page-about .about-hero__unit {
  font-size: 0.5em;
  margin-left: 2px;
}

.page-about .about-hero__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-muted);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  padding: clamp(44px, 7vw, 92px) 0;
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-chapter__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-chapter__idx {
  font-family: var(--font-mono);
  font-size: clamp(48px, 9vw, 110px);
  font-weight: 200;
  line-height: 0.82;
  letter-spacing: -0.03em;
  color: var(--c-line);
  user-select: none;
}

.page-about .about-chapter__body > *:first-child {
  margin-top: 0;
}

.page-about .chapter__eyebrow {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-orange);
}

.page-about .about-chapter__title {
  margin: 10px 0 0;
  max-width: 24ch;
  font-size: clamp(23px, 3.4vw, 40px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-about .about-chapter__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--c-ink);
  opacity: 0.88;
}

.page-about .about-chapter__body > p:not([class]) {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-muted);
}

/* ---------- 通用两栏 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 34px);
  margin-top: clamp(24px, 4vw, 40px);
}

/* ---------- 图 ---------- */
.page-about .about-figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--c-line);
  background: var(--c-panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}

.page-about .about-figure--wide {
  margin-top: clamp(24px, 4vw, 38px);
}

.page-about .about-figure__cap {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 01 生长脉络 ---------- */
.page-about .about-steps {
  list-style: none;
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-about .about-steps__item {
  background: var(--c-void);
  padding: 18px 18px 20px;
  display: grid;
  gap: 6px;
}

.page-about .about-steps__n {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
}

.page-about .about-steps__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-ink);
}

.page-about .about-steps__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-muted);
}

/* ---------- 02 覆盖范围 ---------- */
.page-about .about-coverage {
  display: grid;
  gap: 18px;
}

.page-about .about-coverage__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-about .about-coverage__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 15px 16px;
  background: var(--c-void);
  transition: background 0.16s var(--ease);
}

.page-about .about-coverage__item:hover {
  background: var(--c-lift);
}

.page-about .about-coverage__badge {
  width: 46px;
  height: 42px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
  border: 1px solid var(--c-line);
  background: var(--c-panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.page-about .about-coverage__text h3 {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-ink);
}

.page-about .about-coverage__text p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-muted);
}

.page-about .about-coverage__count {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  color: var(--c-ink);
}

.page-about .about-meter {
  padding: 20px;
  border: 1px solid var(--c-line);
  background:
    linear-gradient(160deg, rgba(53, 224, 192, 0.07), transparent 58%),
    var(--c-panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}

.page-about .about-meter__title {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
}

.page-about .about-meter__big {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(34px, 6vw, 46px);
  font-weight: 600;
  line-height: 1;
  color: var(--c-ink);
}

.page-about .about-meter__big span {
  font-size: 15px;
  margin-left: 8px;
  letter-spacing: 0.04em;
  color: var(--c-muted);
}

.page-about .about-meter__sub {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-about .about-meter__bars {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 62px;
  margin-top: 18px;
}

.page-about .about-meter__bars span {
  flex: 1 1 0;
  min-height: 8px;
  background: var(--c-cyan);
  opacity: 0.5;
}

.page-about .about-meter__bars span:nth-child(1) { height: 34%; }
.page-about .about-meter__bars span:nth-child(2) { height: 48%; }
.page-about .about-meter__bars span:nth-child(3) { height: 41%; }
.page-about .about-meter__bars span:nth-child(4) { height: 62%; }
.page-about .about-meter__bars span:nth-child(5) { height: 55%; }
.page-about .about-meter__bars span:nth-child(6) { height: 78%; }
.page-about .about-meter__bars span:nth-child(7) { height: 69%; }
.page-about .about-meter__bars span:nth-child(8) { height: 88%; }
.page-about .about-meter__bars span:nth-child(9) { height: 74%; }
.page-about .about-meter__bars span:nth-child(10) { height: 96%; }
.page-about .about-meter__bars span:nth-child(11) { height: 82%; }
.page-about .about-meter__bars span:nth-child(12) { height: 60%; }
.page-about .about-meter__bars span:nth-child(12) { background: var(--c-neon); opacity: 0.85; }

/* ---------- 03 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(24px, 4vw, 36px);
}

.page-about .about-ring {
  position: relative;
  width: clamp(176px, 48vw, 232px);
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(
    var(--c-neon) 0turn 0.55turn,
    var(--c-orange) 0.55turn 0.75turn,
    var(--c-cyan) 0.75turn 1turn
  );
}

.page-about .about-ring::after {
  content: "";
  position: absolute;
  inset: 21%;
  border-radius: 50%;
  background: var(--c-void);
  border: 1px solid var(--c-line);
}

.page-about .about-ring__center {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.page-about .about-ring__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 40px);
  font-weight: 600;
  line-height: 1;
  color: var(--c-ink);
}

.page-about .about-ring__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-muted);
}

.page-about .about-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-team__list li {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  column-gap: 14px;
  padding: 15px 16px;
  border: 1px solid var(--c-line);
  background: var(--c-deep);
  transition: border-color 0.16s var(--ease), transform 0.16s var(--ease);
}

.page-about .about-team__list li:hover {
  border-color: var(--c-neon);
  transform: translateY(-2px);
}

.page-about .about-team__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin-top: 5px;
}

.page-about .about-team__dot--neon { background: var(--c-neon); }
.page-about .about-team__dot--orange { background: var(--c-orange); }
.page-about .about-team__dot--cyan { background: var(--c-cyan); }

.page-about .about-team__copy h3 {
  margin: 0 0 5px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-ink);
}

.page-about .about-team__copy p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 04 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding: 0 0 0 22px;
  position: relative;
  display: grid;
  gap: 14px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-cyan), var(--c-neon) 60%, var(--c-line));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 15px 16px 17px;
  border: 1px solid var(--c-line);
  background: var(--c-panel);
  transition: border-color 0.16s var(--ease), transform 0.16s var(--ease), background 0.16s var(--ease);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 21px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--c-void);
  border: 2px solid var(--c-line);
  transition: border-color 0.16s var(--ease), background 0.16s var(--ease);
}

.page-about .about-timeline__item:hover,
.page-about .about-timeline__item:focus-within {
  border-color: var(--c-neon);
  background: var(--c-lift);
  transform: translateY(-2px);
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus-within::before {
  border-color: var(--c-neon);
  background: var(--c-neon);
}

.page-about .about-timeline__ver {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-cyan);
  border: 1px solid var(--c-line);
}

.page-about .about-timeline__item:last-child .about-timeline__ver {
  color: var(--c-void);
  background: var(--c-neon);
  border-color: var(--c-neon);
}

.page-about .about-timeline__name {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-ink);
}

.page-about .about-timeline__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-muted);
}

/* ---------- 05 区域服务 ---------- */
.page-about .about-region {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(24px, 4vw, 36px);
}

.page-about .about-region__card {
  padding: 22px;
  border: 1px solid rgba(200, 255, 60, 0.28);
  background:
    linear-gradient(160deg, rgba(200, 255, 60, 0.1), transparent 58%),
    var(--c-moss);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}

.page-about .about-region__kicker {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-neon);
}

.page-about .about-region__big {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(36px, 7vw, 54px);
  font-weight: 600;
  line-height: 1;
  color: var(--c-neon);
}

.page-about .about-region__big span {
  margin-left: 8px;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--c-ink);
  opacity: 0.75;
}

.page-about .about-region__note {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-ink);
  opacity: 0.82;
}

.page-about .about-region__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-about .about-region__list li {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  background: var(--c-void);
}

.page-about .about-region__list strong {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-ink);
}

.page-about .about-region__list span {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 06 信任 ---------- */
.page-about .about-trust {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(24px, 4vw, 38px);
}

.page-about .about-trust__cell {
  padding: 22px;
  border: 1px solid var(--c-line);
  background: var(--c-deep);
}

.page-about .about-trust__cell--wide {
  background:
    linear-gradient(150deg, rgba(255, 122, 26, 0.09), transparent 62%),
    var(--c-deep);
  border-color: rgba(255, 122, 26, 0.3);
}

.page-about .about-trust__label {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-muted);
}

.page-about .about-trust__big {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(34px, 6vw, 48px);
  font-weight: 600;
  line-height: 1;
  color: var(--c-orange);
}

.page-about .about-trust__big span {
  margin-left: 8px;
  font-size: 15px;
  color: var(--c-muted);
}

.page-about .about-trust__text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-muted);
}

.page-about .about-trust__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-trust__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-ink);
  opacity: 0.86;
}

.page-about .about-trust__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--c-cyan);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}

/* ---------- 继续了解 ---------- */
.page-about .about-next {
  padding: clamp(46px, 7vw, 86px) 0 clamp(56px, 8vw, 96px);
}

.page-about .about-next__eyebrow {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-neon);
}

.page-about .about-next__title {
  margin: 12px 0 0;
  max-width: 26ch;
  font-size: clamp(22px, 3.2vw, 36px);
  font-weight: 900;
  line-height: 1.25;
  color: var(--c-ink);
}

.page-about .about-next__links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: clamp(24px, 4vw, 36px);
}

.page-about .about-next__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  border: 1px solid var(--c-line);
  background: var(--c-panel);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.16s var(--ease), background 0.16s var(--ease), transform 0.16s var(--ease);
}

.page-about .about-next__card:hover {
  border-color: var(--c-neon);
  background: var(--c-lift);
  transform: translateY(-2px);
}

.page-about .about-next__card h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-ink);
}

.page-about .about-next__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-muted);
}

/* ---------- 焦点与可访问性 ---------- */
.page-about a:focus-visible,
.page-about button:focus-visible,
.page-about [tabindex]:focus-visible {
  outline: 2px solid var(--c-neon);
  outline-offset: 3px;
  border-radius: 2px;
}

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

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

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

@media (min-width: 780px) {
  .page-about .about-team {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: start;
  }

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

  .page-about .about-region {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: stretch;
  }

  .page-about .about-trust {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-chapter__inner {
    grid-template-columns: var(--about-idx-w) minmax(0, 1fr);
    column-gap: clamp(22px, 3vw, 46px);
  }

  .page-about .about-chapter__idx {
    margin-left: -0.05em;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .about-timeline {
    padding-left: 26px;
  }

  .page-about .about-timeline__item::before {
    left: -26px;
  }
}

@media (min-width: 1180px) {
  .page-about {
    --about-idx-w: 168px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0.01ms !important;
  }
}
</page_css>