/* ============ 关于拼搏 · 页面专属样式 ============ */
.page-about {
  --ab-cut: 16px;
  --ab-cut-lg: 26px;
  background: var(--pb-night);
  color: var(--pb-text-soft);
  font-family: var(--pb-sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

.page-about p {
  margin: 0 0 16px;
}

.page-about h2,
.page-about h3 {
  margin: 0;
}

.page-about a {
  color: inherit;
}

.page-about .about-inline-link a,
.page-about .about-fact a {
  color: var(--pb-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 26, 0.45);
  transition: color var(--pb-t) var(--pb-ease), border-color var(--pb-t) var(--pb-ease);
}

.page-about .about-inline-link a:hover,
.page-about .about-fact a:hover {
  color: var(--pb-orange-soft);
  border-bottom-color: var(--pb-orange-soft);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbwrap {
  padding: 16px 0 0;
  background: var(--pb-night);
}

.page-about .about-crumb {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 8px;
  margin: 0;
  padding: 0;
  font-family: var(--pb-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.page-about .about-crumb li {
  display: flex;
  align-items: center;
}

.page-about .about-crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--pb-mute);
}

.page-about .about-crumb a {
  color: var(--pb-text-soft);
  text-decoration: none;
}

.page-about .about-crumb a:hover {
  color: var(--pb-orange);
}

.page-about .about-crumb [aria-current="page"] {
  color: var(--pb-lime);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5vw, 56px) 0 clamp(34px, 6vw, 76px);
  background:
    radial-gradient(120% 80% at 82% 0%, rgba(255, 106, 26, 0.22), transparent 62%),
    radial-gradient(90% 70% at 4% 100%, rgba(46, 168, 255, 0.18), transparent 64%),
    linear-gradient(180deg, #0b1626 0%, #0e1c30 100%);
  border-bottom: 1px solid var(--pb-hair);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 84%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 84%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: 30px;
}

.page-about .about-hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--pb-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--pb-lime);
}

.page-about .about-hero__tag::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--pb-lime);
}

.page-about .about-hero h1 {
  margin: 0 0 20px;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.page-about .about-hero h1 em {
  font-style: normal;
  color: var(--pb-orange);
}

.page-about .about-hero__lead {
  max-width: 40ch;
  margin: 0 0 26px;
  font-size: 17px;
  color: var(--pb-text-soft);
}

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

.page-about .about-hero__board {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--pb-hair);
  border: 1px solid var(--pb-hair);
  -webkit-clip-path: polygon(0 0, calc(100% - var(--ab-cut)) 0, 100% var(--ab-cut), 100% 100%, var(--ab-cut) 100%, 0 calc(100% - var(--ab-cut)));
  clip-path: polygon(0 0, calc(100% - var(--ab-cut)) 0, 100% var(--ab-cut), 100% 100%, var(--ab-cut) 100%, 0 calc(100% - var(--ab-cut)));
}

.page-about .about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 18px 16px 16px;
  background: var(--pb-panel);
}

.page-about .about-hero__num {
  font-family: var(--pb-mono);
  font-size: clamp(24px, 3.6vw, 32px);
  font-weight: 700;
  line-height: 1;
  color: #ffffff;
}

.page-about .about-hero__stat .pb-label {
  color: var(--pb-mute);
  font-size: 12px;
  letter-spacing: 0.08em;
}

/* ---------- 数据带 ---------- */
.page-about .about-band {
  padding: 0 0 clamp(6px, 2vw, 18px);
  background: var(--pb-night);
}

.page-about .about-band__inner {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 10px;
  padding: clamp(22px, 3.4vw, 34px) clamp(18px, 3vw, 42px);
  background: linear-gradient(100deg, #ff6a1a 0%, #ff9a5c 48%, #c8ff5c 100%);
  -webkit-clip-path: polygon(0 22px, 100% 0, 100% calc(100% - 22px), 0 100%);
  clip-path: polygon(0 22px, 100% 0, 100% calc(100% - 22px), 0 100%);
}

.page-about .about-band__cell {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .about-band__val {
  font-family: var(--pb-mono);
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: #0b1626;
}

.page-about .about-band__cap {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: rgba(11, 22, 38, 0.74);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-sec {
  position: relative;
  padding: clamp(40px, 7vw, 88px) 0;
  border-top: 1px solid var(--pb-hair);
}

.page-about .about-sec__grid {
  display: grid;
  gap: 20px;
}

.page-about .about-sec__num {
  display: inline-block;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--pb-orange);
  font-family: var(--pb-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--pb-orange);
}

.page-about .about-sec__title {
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.3;
  font-weight: 800;
  color: #ffffff;
}

.page-about .about-sec__body > p {
  max-width: 44ch;
}

.page-about .about-inline-link {
  margin-top: 20px;
  font-size: 15px;
  color: var(--pb-mute);
}

/* ---------- 通用图 ---------- */
.page-about .about-figure {
  margin: 26px 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--pb-hair);
  background: var(--pb-panel);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-family: var(--pb-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--pb-mute);
}

.page-about .about-figure--cut img {
  -webkit-clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut-lg)), calc(100% - var(--ab-cut-lg)) 100%, 0 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut-lg)), calc(100% - var(--ab-cut-lg)) 100%, 0 100%);
}

/* ---------- 团队分工 ---------- */
.page-about .about-roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.page-about .about-role {
  position: relative;
  padding: 20px 20px 22px 24px;
  background: var(--pb-panel);
  border: 1px solid var(--pb-hair);
  -webkit-clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: transform var(--pb-t) var(--pb-ease), background-color var(--pb-t) var(--pb-ease);
}

.page-about .about-role::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--pb-orange);
  transition: background-color var(--pb-t) var(--pb-ease);
}

.page-about .about-role:hover {
  transform: translateY(-4px);
  background: var(--pb-panel-2);
}

.page-about .about-role:hover::before {
  background: var(--pb-lime);
}

.page-about .about-role__num {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--pb-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--pb-lime);
}

.page-about .about-role h3 {
  margin-bottom: 8px;
  font-size: 18px;
  font-weight: 800;
  color: #ffffff;
}

.page-about .about-role p {
  max-width: 34ch;
  margin: 0;
  font-size: 15px;
  color: var(--pb-text-soft);
}

/* ---------- 数据流程 ---------- */
.page-about .about-flow {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .about-flow__step {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  padding: 0 0 18px;
  margin-bottom: 18px;
  border-bottom: 1px dashed var(--pb-hair);
}

.page-about .about-flow__step:last-child {
  margin-bottom: 0;
  border-bottom: 0;
}

.page-about .about-flow__mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  font-family: var(--pb-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--pb-lime);
  border: 1px solid var(--pb-hair-strong);
  background: rgba(182, 255, 60, 0.06);
}

.page-about .about-flow__step h3 {
  margin-bottom: 6px;
  font-size: 17px;
  font-weight: 800;
  color: #ffffff;
}

.page-about .about-flow__step p {
  max-width: 42ch;
  margin: 0;
  font-size: 15px;
}

/* ---------- 版本时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 24px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 36px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, var(--pb-hair-strong), var(--pb-hair));
}

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

.page-about .about-timeline__item:last-child::before {
  display: none;
}

.page-about .about-timeline__mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  font-family: var(--pb-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--pb-night);
  background: var(--pb-orange);
}

.page-about .about-timeline__label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--pb-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--pb-cyan);
}

.page-about .about-timeline__body h3 {
  margin-bottom: 6px;
  font-size: 17px;
  font-weight: 800;
  color: #ffffff;
}

.page-about .about-timeline__body p {
  max-width: 46ch;
  margin: 0;
  font-size: 15px;
}

/* ---------- 合作与资质 ---------- */
.page-about .about-trust {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 26px 0 24px;
}

.page-about .about-trust__card {
  padding: 20px 18px;
  background: linear-gradient(160deg, rgba(46, 168, 255, 0.14), rgba(18, 38, 63, 0.9) 58%);
  border: 1px solid var(--pb-hair);
  -webkit-clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-about .about-trust__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--pb-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--pb-orange);
}

.page-about .about-trust__card h3 {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 800;
  color: #ffffff;
}

.page-about .about-trust__card p {
  margin: 0;
  font-size: 14px;
  color: var(--pb-text-soft);
}

/* ---------- 服务承诺（浅色板面） ---------- */
.page-about .about-service {
  background: var(--pb-board);
  color: var(--pb-ink);
  padding: clamp(40px, 7vw, 84px) 0;
  border-top: 1px solid var(--pb-hair-ink);
}

.page-about .about-service .about-sec__title {
  color: var(--pb-ink);
}

.page-about .about-service .about-sec__num {
  color: var(--pb-orange);
  border-bottom-color: var(--pb-orange);
}

.page-about .about-service .about-sec__body > p {
  color: #35485f;
}

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

.page-about .about-fact {
  padding: 18px;
  background: #ffffff;
  border: 1px solid var(--pb-hair-ink);
  -webkit-clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .about-fact h3 {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 800;
  color: var(--pb-ink);
}

.page-about .about-fact p {
  margin: 0;
  font-size: 14px;
  color: #3d5064;
}

.page-about .about-service .about-inline-link--dark {
  color: #55677d;
}

/* ---------- 收尾 ---------- */
.page-about .about-close {
  position: relative;
  overflow: hidden;
  padding: clamp(44px, 8vw, 96px) 0;
  background:
    radial-gradient(90% 90% at 90% 10%, rgba(255, 106, 26, 0.2), transparent 62%),
    linear-gradient(180deg, #0b1626 0%, #0e1c30 100%);
}

.page-about .about-close__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-close__label {
  display: block;
  margin-bottom: 14px;
  font-family: var(--pb-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--pb-lime);
}

.page-about .about-close h2 {
  margin-bottom: 16px;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.22;
  font-weight: 900;
  color: #ffffff;
}

.page-about .about-close__copy p {
  max-width: 42ch;
  color: var(--pb-text-soft);
}

.page-about .about-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

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

/* ---------- 交互与动效 ---------- */
.page-about .pb-btn {
  transition: transform var(--pb-t) var(--pb-ease), background-color var(--pb-t) var(--pb-ease), color var(--pb-t) var(--pb-ease);
}

.page-about .pb-btn:hover {
  transform: translateY(-2px);
}

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--pb-lime);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .page-about .pb-btn:hover,
  .page-about .about-role:hover {
    transform: none;
  }
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 479px) {
  .page-about .about-hero__board {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .about-band__inner {
    gap: 16px 8px;
  }

  .page-about .about-flow__step,
  .page-about .about-timeline__item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 12px;
  }

  .page-about .about-timeline__item::before {
    left: 14px;
  }
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 640px) {
  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 720px) {
  .page-about .about-band__inner {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px 8px;
  }
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: end;
  }

  .page-about .about-sec__grid {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 64px);
  }

  .page-about .about-sec__head {
    position: sticky;
    top: 118px;
    align-self: start;
  }

  .page-about .about-service .about-sec__head {
    position: static;
  }

  .page-about .about-close__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: center;
  }

  .page-about .about-timeline__body p {
    max-width: 52ch;
  }
}

@media (min-width: 1080px) {
  .page-about .about-sec__grid {
    grid-template-columns: 260px minmax(0, 1fr);
  }

  .page-about .about-service__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}