.page-about {
  --about-ink-soft: rgba(18, 16, 13, .68);
  --about-ink-line: rgba(18, 16, 13, .16);
  --about-clip: clamp(28px, 6vw, 72px);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: 16px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5vw, 58px) 0 clamp(30px, 5vw, 64px);
}

.page-about .about-hero__slash {
  position: absolute;
  z-index: 0;
  top: -14%;
  left: 30%;
  right: -18%;
  height: 104%;
  background:
    linear-gradient(135deg, rgba(34, 224, 208, .20), rgba(255, 122, 26, .14) 58%, rgba(11, 10, 31, 0) 84%);
  clip-path: polygon(20% 0, 100% 0, 100% 72%, 0 100%);
  pointer-events: none;
}

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

.page-about .about-hero__kicker {
  margin: 0 0 12px;
  color: var(--cyan);
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  color: #ffffff;
  letter-spacing: -.015em;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 62ch;
  color: var(--text);
}

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

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 14px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 12px;
  border-left: 2px solid rgba(34, 224, 208, .42);
}

.page-about .about-hero__fact-key {
  color: var(--muted);
}

.page-about .about-hero__fact-num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 7vw, 40px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--cyan);
  letter-spacing: -.02em;
}

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

/* ---------- 章节题头 ---------- */
.page-about .about-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 24px;
}

.page-about .chapter__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--haze);
  transition: color .45s ease, border-color .45s ease, background-color .45s ease;
}

.page-about .chapter__no.is-visible {
  color: var(--cyan);
  border-color: var(--line-strong);
  background-color: rgba(34, 224, 208, .07);
}

.page-about .about-head__text .t-label {
  margin: 0 0 6px;
  color: var(--cyan);
}

.page-about .about-head__text .chapter__title {
  margin: 0;
}

/* ---------- 01 做什么 ---------- */
.page-about .about-scope__lede {
  margin: 0 0 30px;
}

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

.page-about .about-scope__item {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

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

.page-about .about-scope__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--orange);
}

.page-about .about-scope__name {
  margin: 6px 0 8px;
  font-size: 18px;
  font-weight: 600;
  color: #ffffff;
}

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

/* ---------- 02 赛季流程 ---------- */
.page-about .about-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-flow__step {
  position: relative;
  padding: 20px 20px 20px 22px;
  background: linear-gradient(120deg, rgba(42, 37, 96, .55), rgba(23, 20, 58, .18));
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: transform .4s ease, background-color .4s ease;
}

.page-about .about-flow__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-about .about-flow__name {
  margin: 6px 0 8px;
  font-size: 19px;
  color: #ffffff;
}

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

.page-about .about-flow__note {
  margin-top: 24px;
}

/* ---------- 03 编辑室 ---------- */
.page-about .about-desk__inner {
  display: grid;
  gap: 28px;
}

.page-about .about-desk__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-desk__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-about .about-desk__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-about .about-desk__list strong {
  color: var(--orange);
  font-weight: 600;
}

.page-about .about-desk__figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--night-2);
}

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

/* ---------- 04 暖纸档案带 ---------- */
.page-about .about-archive {
  position: relative;
  background: var(--paper);
  color: var(--ink);
  margin-top: clamp(30px, 6vw, 78px);
  padding: clamp(38px, 7vw, 84px) 0 clamp(42px, 7vw, 88px);
}

.page-about .about-archive::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -18px;
  height: 19px;
  background: var(--paper);
  clip-path: polygon(0 100%, 100% 0, 100% 100%, 0 100%);
}

.page-about .about-archive__inner {
  display: grid;
  gap: 30px;
}

.page-about .about-archive__label {
  margin: 0 0 8px;
  color: var(--about-ink-soft);
}

.page-about .about-archive .chapter__title {
  margin: 0 0 14px;
  color: var(--ink);
}

.page-about .about-archive__lede {
  margin: 0 0 20px;
  color: var(--ink);
}

.page-about .about-archive__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-about .about-archive__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-about .about-archive__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 11px;
  height: 2px;
  background: var(--ink);
  opacity: .6;
}

.page-about .about-archive__cta {
  color: var(--ink);
  border-color: rgba(18, 16, 13, .34);
}

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

.page-about .about-archive__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  filter: contrast(1.05) saturate(.9);
  box-shadow: 0 30px 60px -32px rgba(0, 0, 0, .8);
}

.page-about .about-archive__cap {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--about-ink-soft);
}

/* ---------- 05 团队与服务范围 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: 34px;
}

.page-about .about-team__sub {
  margin: 0;
  color: var(--muted);
}

.page-about .about-team__bar-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .about-team__bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 5px 12px;
}

.page-about .about-team__bar-name {
  font-size: 15px;
  color: var(--text);
}

.page-about .about-team__bar-num {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
}

.page-about .about-team__bar-track {
  grid-column: 1 / -1;
  display: block;
  height: 8px;
  border-radius: var(--radius-pill);
  background: rgba(142, 136, 196, .18);
  overflow: hidden;
}

.page-about .about-team__bar-fill {
  display: block;
  height: 100%;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-about .about-team__bar-fill--a { width: 80%; }
.page-about .about-team__bar-fill--b { width: 70%; }
.page-about .about-team__bar-fill--c { width: 60%; }

.page-about .about-team__note {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  padding-left: 16px;
  border-left: 2px solid rgba(255, 122, 26, .5);
}

.page-about .about-team__text .lede {
  margin: 0;
}

.page-about .about-team__figure {
  position: relative;
  margin: 24px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--night-2);
}

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

.page-about .about-team__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 10, 31, 0) 42%, rgba(11, 10, 31, .78));
  pointer-events: none;
}

.page-about .about-team__figcap {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 14px;
  z-index: 1;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

/* ---------- 06 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 6px 0 0;
  padding: 0 0 0 30px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(34, 224, 208, .22) 72%, rgba(34, 224, 208, 0));
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 30px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--night);
  border: 2px solid var(--haze);
  transition: border-color .45s ease, background-color .45s ease, box-shadow .45s ease;
}

.page-about .about-timeline__item.is-visible::before {
  border-color: var(--cyan);
  background: rgba(34, 224, 208, .22);
  box-shadow: 0 0 0 5px rgba(34, 224, 208, .1);
}

.page-about .about-timeline__when {
  margin: 0 0 5px;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--orange);
}

.page-about .about-timeline__title {
  margin: 0 0 6px;
  font-size: 19px;
  color: #ffffff;
}

.page-about .about-timeline__item p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 收尾 ---------- */
.page-about .about-next__inner {
  border-top: 1px solid var(--line);
  padding-top: clamp(26px, 5vw, 46px);
}

.page-about .about-next__title {
  margin: 0 0 12px;
}

.page-about .about-next__lede {
  margin: 0;
  max-width: 56ch;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 760px) {
  .page-about .about-flow__step:nth-child(even) {
    margin-left: 52px;
  }

  .page-about .about-scope__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 36px;
  }

  .page-about .about-scope__item:nth-last-child(2) {
    border-bottom: 1px solid var(--line);
  }
}

@media (min-width: 900px) {
  .page-about .about-desk__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-desk__figure {
    margin-top: 58px;
  }

  .page-about .about-archive__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, .78fr);
    gap: 50px;
    align-items: start;
  }

  .page-about .about-archive__figure {
    transform: translateY(-42px);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    gap: 50px;
  }

  .page-about .about-timeline {
    padding-left: 40px;
  }

  .page-about .about-timeline__item::before {
    left: -40px;
  }

  .page-about .about-timeline {
    max-width: 74ch;
  }
}

@media (min-width: 1180px) {
  .page-about .about-flow__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-flow__step:nth-child(even) {
    margin-left: 0;
    transform: translateY(28px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-flow__step,
  .page-about .about-timeline__item::before,
  .page-about .chapter__no {
    transition: none;
  }

  .page-about .about-flow__step:nth-child(even) {
    transform: none;
  }

  .page-about .about-archive__figure {
    transform: none;
  }
}