.page-about {
  --about-rail-w: 178px;
  --about-border: 2px solid var(--line-strong);
  --about-shadow: 8px 8px 0 rgba(10, 15, 13, 0.55);
  --about-shadow-sm: 5px 5px 0 rgba(10, 15, 13, 0.45);
  --about-pad: clamp(18px, 3vw, 34px);
  background: var(--ink-900);
  color: var(--paper);
  padding-block: clamp(18px, 4vw, 38px) clamp(44px, 8vw, 92px);
  overflow-x: hidden;
}

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

.page-about .breadcrumb-list {
  color: var(--gray);
  font-size: 0.8rem;
}

.page-about .breadcrumb-list a {
  color: var(--cool);
  text-decoration: none;
}

.page-about .breadcrumb-list a:hover {
  color: var(--yellow);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  margin-top: clamp(18px, 3.5vw, 36px);
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.03;
  letter-spacing: -0.02em;
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--char);
  background: var(--yellow);
  padding: 0 0.1em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 48ch;
  color: var(--cool);
  font-size: 1rem;
  line-height: 1.78;
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__facts li {
  border: 2px solid var(--line);
  background: var(--ink-800);
  padding: 8px 12px;
  font-size: 0.8rem;
  color: var(--cool);
}

.page-about .about-hero__facts .num {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan);
  margin-right: 3px;
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-about .about-hero__media {
  margin: 0;
  border: var(--about-border);
  box-shadow: var(--about-shadow);
  background: var(--ink-800);
}

.page-about .about-hero__media img {
  width: 100%;
  object-fit: cover;
}

.page-about .media-frame__cap {
  padding: 10px 13px;
  border-top: 2px solid var(--line);
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--gray);
}

/* ---------- 时间轴 + 面板骨架 ---------- */
.page-about .about-shell {
  display: grid;
  gap: 20px;
  margin-top: clamp(30px, 6vw, 68px);
}

.page-about .about-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
  scrollbar-width: thin;
}

.page-about .about-rail .rail-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 2px solid var(--line);
  background: var(--ink-800);
  color: var(--cool);
  font-size: 0.8rem;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.page-about .about-rail .rail-link:hover {
  border-color: var(--yellow);
  color: var(--paper);
}

.page-about .about-rail .rail-link__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--yellow);
}

.page-about .about-rail .rail-link[aria-current="true"] {
  background: var(--red);
  border-color: var(--char);
  color: #FFFFFF;
  box-shadow: 4px 4px 0 rgba(10, 15, 13, 0.55);
}

.page-about .about-rail .rail-link[aria-current="true"] .rail-link__num {
  color: #FFFFFF;
}

.page-about .about-panel {
  background: var(--ink-800);
  border: var(--about-border);
  box-shadow: var(--about-shadow);
  padding: var(--about-pad);
  scroll-margin-top: 96px;
}

.page-about .about-panel + .about-panel {
  margin-top: clamp(22px, 4vw, 40px);
}

.page-about .about-panel--paper {
  background: var(--paper);
  color: var(--char);
  border-color: var(--char);
}

.page-about .about-panel--paper .about-prose p,
.page-about .about-panel--paper .about-prose__lead {
  color: #33423C;
}

.page-about .about-panel__head {
  position: relative;
  display: grid;
  gap: 8px;
  padding-bottom: 15px;
  margin-bottom: 18px;
  border-bottom: 2px solid var(--line);
}

.page-about .about-panel--paper .about-panel__head {
  border-bottom-color: rgba(10, 15, 13, 0.28);
}

.page-about .about-panel__head .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .about-panel--paper .about-panel__head .eyebrow {
  color: var(--yellow-deep);
}

.page-about .about-panel__head .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 3.4vw, 1.95rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  padding-right: 24px;
}

.page-about .vertical-note {
  position: absolute;
  top: 0;
  right: 0;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: var(--gray);
}

.page-about .about-prose p {
  margin: 0 0 14px;
  color: var(--cool);
  font-size: 0.94rem;
  line-height: 1.78;
}

.page-about .about-prose p:last-child {
  margin-bottom: 0;
}

.page-about .about-prose__lead {
  margin: 0 0 18px;
  color: var(--cool);
  font-size: 0.96rem;
  line-height: 1.78;
}

.page-about .about-quote {
  margin: 22px 0 0;
  padding: 16px 18px;
  border-left: 6px solid var(--red);
  background: rgba(217, 48, 37, 0.12);
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.4vw, 1.18rem);
  line-height: 1.6;
  color: var(--paper);
}

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

/* ---------- 工作流 ---------- */
.page-about .about-flow {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow__step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 17px 0;
  border-top: 2px solid var(--line);
}

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

.page-about .about-flow__num {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1.4;
  color: var(--cyan);
}

.page-about .about-flow__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .about-flow__step p {
  margin: 0;
  color: var(--cool);
  font-size: 0.92rem;
  line-height: 1.76;
}

.page-about .about-flow__media {
  margin: 24px 0 0;
  border: var(--about-border);
  box-shadow: var(--about-shadow-sm);
  background: var(--ink-900);
}

.page-about .about-flow__media img {
  width: 100%;
  object-fit: cover;
}

/* ---------- 团队手风琴 ---------- */
.page-about .about-team {
  margin-top: 6px;
}

.page-about .about-team__item {
  border: 2px solid var(--char);
  background: var(--ink-700);
}

.page-about .about-team__item + .about-team__item {
  margin-top: 10px;
}

.page-about .about-team__head {
  margin: 0;
  font-size: 1rem;
}

.page-about .about-team .accordion__btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 0;
  background: transparent;
  color: var(--paper);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-about .about-team .accordion__btn:hover {
  background: rgba(69, 255, 227, 0.08);
}

.page-about .about-team__role {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
}

.page-about .about-team__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--yellow);
}

.page-about .about-team .accordion__icon {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan);
  min-width: 14px;
  text-align: center;
}

.page-about .about-team .accordion__panel {
  padding: 12px 16px 16px;
  margin-top: 0;
  border-top: 2px dashed rgba(199, 209, 204, 0.3);
  color: var(--cool);
  font-size: 0.92rem;
  line-height: 1.76;
}

.page-about .about-team .accordion__panel p {
  margin: 0;
}

/* ---------- 联赛与合作 ---------- */
.page-about .about-split {
  display: grid;
  gap: 22px;
}

.page-about .about-split__text p {
  margin: 0 0 14px;
  color: var(--cool);
  font-size: 0.94rem;
  line-height: 1.78;
}

.page-about .about-split__media {
  margin: 0;
  border: var(--about-border);
  box-shadow: var(--about-shadow-sm);
  background: var(--ink-900);
}

.page-about .about-split__media img {
  width: 100%;
  object-fit: cover;
  max-height: 420px;
}

.page-about .about-cats {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-cats__item {
  padding: 12px 14px;
  border: 2px solid var(--line);
  background: var(--ink-900);
}

.page-about .about-cats__item p {
  margin: 8px 0 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 数字条 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  border: 2px solid var(--char);
  background: rgba(10, 15, 13, 0.35);
}

.page-about .about-stats__item {
  padding: 16px 14px;
  background: var(--ink-900);
}

.page-about .about-stats__item .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4.2vw, 2.1rem);
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-stats__item .stat__label {
  display: block;
  margin-top: 8px;
  font-size: 0.76rem;
  line-height: 1.55;
  color: var(--gray);
}

/* ---------- 回访与 CTA ---------- */
.page-about .about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-cta {
  border-color: var(--red);
  background:
    linear-gradient(135deg, rgba(217, 48, 37, 0.24), rgba(11, 31, 26, 0.9) 62%),
    var(--ink-800);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 14px;
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 3.8vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 60ch;
  color: var(--cool);
  font-size: 0.94rem;
  line-height: 1.78;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

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

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

  .page-about .about-flow__step:nth-child(even) {
    padding-left: 22px;
  }
}

@media (min-width: 880px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-about .about-hero__media {
    margin-top: 46px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.56fr);
    align-items: start;
    gap: clamp(22px, 3vw, 36px);
  }

  .page-about .about-split__media img {
    max-height: none;
  }
}

@media (min-width: 960px) {
  .page-about .about-shell {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(24px, 3.4vw, 44px);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 92px;
    flex-direction: column;
    overflow: visible;
    padding: 0 0 0 2px;
    border-left: 2px solid var(--line-strong);
  }

  .page-about .about-rail .rail-link {
    width: 100%;
    justify-content: flex-start;
    white-space: normal;
    line-height: 1.4;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-rail .rail-link {
    transition: none;
  }
}