.page-about {
  --about-rail: 210px;
  --about-gap: clamp(24px, 4vw, 56px);
  --about-rule: 2px solid var(--line);
  --about-scan: repeating-linear-gradient(180deg, rgba(245, 241, 232, .045) 0 1px, transparent 1px 6px);
}

/* ---------- 首屏 ---------- */
.page-about .about-head {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 44px) 0 clamp(24px, 4vw, 48px);
  border-bottom: var(--about-rule);
  background:
    radial-gradient(120% 100% at 90% 0%, rgba(255, 106, 26, .18), transparent 62%),
    linear-gradient(180deg, rgba(22, 48, 76, .92), rgba(11, 26, 46, 0) 82%);
}

.page-about .about-head::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--about-scan);
  pointer-events: none;
  opacity: .7;
}

.page-about .about-head .container {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--haze);
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-about .breadcrumb a {
  color: var(--haze);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.page-about .page-head__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--turf);
  margin: 0 0 12px;
}

.page-about h1 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.06;
  font-size: clamp(30px, 6.2vw, 62px);
  color: var(--paper);
  margin: 0 0 18px;
  max-width: 18em;
}

.page-about .about-head .lede {
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--paper);
  opacity: .92;
  margin: 0;
}

/* ---------- 首屏数据条 ---------- */
.page-about .about-stats {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 2px solid var(--line);
  border-left: 2px solid var(--line);
}

.page-about .about-stat {
  padding: 16px 14px 14px;
  border-right: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
  background: rgba(5, 16, 28, .38);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.04em;
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1;
  color: var(--signal);
}

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

.page-about .about-stat__num em {
  font-style: normal;
  font-size: .55em;
  vertical-align: super;
}

.page-about .about-stat__cap {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--haze);
}

/* ---------- 首屏横幅 ---------- */
.page-about .about-hero {
  margin: 0 0 clamp(24px, 4vw, 46px);
}

.page-about .about-hero .figure__img {
  border-bottom: var(--about-rule);
  max-height: 460px;
}

.page-about .about-hero .figure__caption {
  padding: 12px var(--gutter);
}

/* ---------- 画册式双栏 ---------- */
.page-about .about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .about-index {
  align-self: start;
  border: var(--about-rule);
  background: var(--slate);
  padding: 18px 16px;
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-index__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--signal);
  margin: 0 0 12px;
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px 12px;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 0;
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  border-bottom: 1px solid rgba(36, 70, 107, .8);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--haze);
}

.page-about .about-index__meta {
  margin: 16px 0 0;
  font-size: 11px;
  line-height: 1.7;
  color: var(--haze);
  letter-spacing: .04em;
}

/* ---------- 章节 ---------- */
.page-about .about-section {
  padding: clamp(34px, 5vw, 62px) 0;
  border-top: var(--about-rule);
}

.page-about .about-section:first-child {
  border-top: none;
  padding-top: 0;
}

.page-about .about-section h2 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.025em;
  line-height: 1.14;
  font-size: clamp(22px, 3.4vw, 36px);
  color: var(--paper);
  margin: 0;
}

.page-about .about-section h3 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.015em;
  font-size: 17px;
  color: var(--paper);
  margin: 10px 0 8px;
}

.page-about .about-section .prose p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper);
  opacity: .94;
  margin: 0 0 16px;
}

.page-about .about-note {
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
  opacity: .92;
  max-width: 68ch;
  margin: 22px 0 0;
}

.page-about .about-note a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-about .about-note a:hover,
.page-about .about-note a:focus-visible {
  color: var(--amber);
}

/* ---------- 起点：主栏 + 侧卡 ---------- */
.page-about .about-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 34px);
  margin-top: clamp(16px, 2.4vw, 26px);
}

.page-about .about-cols__side .card__title {
  font-size: 17px;
}

.page-about .quote-paper {
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: clamp(20px, 3vw, 32px) clamp(20px, 3vw, 36px);
  background: var(--arch);
  color: var(--ink);
  border-left: 8px solid var(--signal);
  box-shadow: var(--shadow-hard-sm);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.7;
  font-weight: 600;
}

.page-about .quote-paper p {
  margin: 0;
}

/* ---------- 积累：非对称数字块 ---------- */
.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-figure {
  padding: 16px 14px 18px;
  border: var(--about-rule);
  background: var(--slate);
}

.page-about .about-figure--lead {
  grid-column: 1 / -1;
  background:
    linear-gradient(135deg, rgba(255, 106, 26, .16), transparent 70%),
    var(--slate);
  border-color: var(--signal);
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-figure--turf {
  border-color: var(--turf);
}

.page-about .about-figure .stat-number {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.04em;
  font-size: clamp(44px, 11vw, 104px);
  line-height: .95;
  color: var(--signal);
  margin: 0;
}

.page-about .about-figure .stat-caption {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--paper);
  opacity: .9;
  max-width: 44ch;
}

.page-about .about-figure__num {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.035em;
  font-size: clamp(26px, 5vw, 38px);
  line-height: 1;
  color: var(--paper);
  margin: 0;
}

.page-about .about-figure--turf .about-figure__num {
  color: var(--turf);
}

.page-about .about-figure__num em {
  font-style: normal;
  font-size: .5em;
  color: var(--amber);
}

.page-about .about-figure__unit {
  font-size: .38em;
  font-family: var(--font-body);
  letter-spacing: 0;
  color: var(--paper);
  margin-left: 4px;
}

.page-about .about-figure__cap {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--haze);
}

/* ---------- 流程 ---------- */
.page-about .about-process {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
  margin-top: clamp(18px, 3vw, 28px);
}

.page-about .about-process .accordion__trigger {
  gap: 12px;
}

.page-about .about-process__name {
  flex: 1 1 auto;
  text-align: left;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .about-process .accordion__panel p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper);
  opacity: .9;
  margin: 0 0 10px;
}

.page-about .about-process__deliver {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--turf) !important;
  opacity: 1 !important;
  border-top: 1px dashed var(--line);
  padding-top: 10px;
  margin-bottom: 0 !important;
}

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

.page-about .about-process__figure .figure__img {
  min-height: 220px;
  border: var(--about-rule);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  margin-top: clamp(18px, 3vw, 28px);
  display: grid;
  gap: 14px;
}

.page-about .about-team__row {
  padding: 16px;
  border: var(--about-rule);
  background: rgba(22, 48, 76, .6);
  display: grid;
  gap: 10px;
}

.page-about .about-team__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.page-about .about-team__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.01em;
  font-size: 17px;
  color: var(--paper);
}

.page-about .about-team__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--haze);
}

.page-about .about-team__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 26px;
  letter-spacing: -.03em;
  color: var(--signal);
  margin-right: 3px;
}

.page-about .about-team__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper);
  opacity: .9;
}

.page-about .about-team .meter {
  height: 10px;
}

.page-about .about-bar--a { width: 56%; }
.page-about .about-bar--b { width: 26%; background: var(--turf); }
.page-about .about-bar--c { width: 18%; background: var(--amber); }

.page-about .about-proof {
  margin-top: clamp(20px, 3vw, 32px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

/* ---------- 协作网络 ---------- */
.page-about .about-network {
  margin-top: clamp(18px, 3vw, 28px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
}

.page-about .about-network__item {
  padding: 20px 18px;
  border-top: 1px solid var(--line);
}

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

.page-about .about-network__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper);
  opacity: .9;
  max-width: 62ch;
}

/* ---------- 里程碑 ---------- */
.page-about .about-milestone-figure {
  margin: clamp(18px, 3vw, 28px) 0 clamp(22px, 3vw, 34px);
}

.page-about .about-milestone-figure .figure__img {
  border: var(--about-rule);
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 20px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--signal), var(--line) 45%, var(--turf));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(20px, 3vw, 34px);
}

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

.page-about .about-timeline__dot {
  position: absolute;
  left: -20px;
  top: 12px;
  width: 12px;
  height: 12px;
  background: var(--signal);
  border: 2px solid var(--ink);
  box-shadow: 0 0 0 2px var(--signal);
}

.page-about .about-timeline__trigger {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  width: 100%;
  padding: 12px 14px;
  background: var(--slate);
  border: var(--about-rule);
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-timeline__season {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--signal);
}

.page-about .about-timeline__title {
  flex: 1 1 200px;
  text-align: left;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.01em;
  font-size: 16px;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .about-timeline .accordion__panel {
  padding: 14px 16px 0;
  border-left: 2px solid var(--line);
  margin-left: 2px;
}

.page-about .about-timeline .accordion__panel p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--paper);
  opacity: .9;
  max-width: 60ch;
}

/* ---------- 收尾行动 ---------- */
.page-about .about-cta {
  margin-top: clamp(40px, 6vw, 76px);
  border: var(--about-rule);
  background:
    linear-gradient(140deg, rgba(255, 106, 26, .2), transparent 62%),
    var(--slate);
  box-shadow: var(--shadow-hard);
  padding: clamp(24px, 4vw, 46px);
}

.page-about .about-cta__kicker {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--turf);
  margin: 0 0 12px;
}

.page-about .about-cta__title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.14;
  font-size: clamp(22px, 3.6vw, 38px);
  color: var(--paper);
  margin: 0 0 14px;
}

.page-about .about-cta__text {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--paper);
  opacity: .92;
  max-width: 64ch;
  margin: 0 0 22px;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

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

  .page-about .about-figure--lead {
    grid-column: span 2;
    grid-row: span 2;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
  }

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

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

  .page-about .about-network__item {
    border-right: 1px solid var(--line);
  }

  .page-about .about-network__item:nth-child(2n) {
    border-right: none;
  }
}

@media (min-width: 1000px) {
  .page-about .about-grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-offset) + 18px);
  }

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

  .page-about .about-process {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-process__figure {
    position: sticky;
    top: calc(var(--header-offset) + 18px);
  }

  .page-about .about-hero .figure__caption {
    padding-left: 0;
    padding-right: 0;
    max-width: var(--shell);
    margin: 0 auto;
    padding: 12px var(--gutter);
  }
}

@media (min-width: 1240px) {
  .page-about .about-network {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-network__item {
    border-right: 1px solid var(--line);
    padding: 24px 22px;
  }

  .page-about .about-network__item:nth-child(2n) {
    border-right: 1px solid var(--line);
  }

  .page-about .about-network__item:last-child {
    border-right: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__link,
  .page-about .breadcrumb a {
    transition: none;
  }
}
</style>
<<<PAGE_CSS_END>>>