/* ================= 使命愿景页 / page-about ================= */
.page-about {
  --about-rail: 248px;
  background: var(--night);
  color: var(--silver);
}

.page-about .wrap {
  min-width: 0;
}

/* ---------- 面包屑 ---------- */
.page-about .about-top {
  padding-top: 20px;
}

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--dim);
}

.page-about .breadcrumbs a {
  color: var(--cyan);
  text-decoration: none;
}

.page-about .breadcrumbs a:hover {
  text-decoration: underline;
}

/* ---------- 首屏拼贴 ---------- */
.page-about .about-hero {
  position: relative;
  display: grid;
  gap: 34px;
  padding: 32px 0 48px;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan-32), transparent 62%);
}

.page-about .about-hero__lead {
  min-width: 0;
}

.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(32px, 8.4vw, 68px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-hero .lede {
  margin: 18px 0 0;
  max-width: 54ch;
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__side {
  position: relative;
  min-width: 0;
}

.page-about .about-hero__side::before {
  content: "";
  position: absolute;
  top: -12px;
  right: 0;
  width: 118px;
  height: 6px;
  background: var(--gold);
  transform: skewX(-18deg);
  opacity: 0.9;
}

.page-about .about-stats {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: var(--ink);
}

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-about .about-stats .stat-label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--dim);
}

.page-about .about-hero__note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--cyan-32);
  font-size: 13px;
  line-height: 1.7;
  color: var(--dim);
}

/* ---------- 主体网格 ---------- */
.page-about .about-body {
  display: grid;
  gap: 36px;
  padding: 36px 0 64px;
}

.page-about .about-flow {
  display: grid;
  min-width: 0;
}

/* ---------- 右侧索引 ---------- */
.page-about .about-index {
  min-width: 0;
  padding: 14px 0 10px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-index__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0 0 6px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index__list li {
  flex: 0 0 auto;
}

.page-about .about-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  white-space: nowrap;
  background: var(--ink);
  border: 1px solid var(--line);
  color: var(--dim);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  color: var(--white);
  border-color: var(--cyan-32);
}

.page-about .about-index__list a[aria-current="true"],
.page-about .about-index__list a[aria-current="page"],
.page-about .about-index__list a.is-active {
  color: var(--white);
  border-color: var(--cyan);
  background: var(--cyan-08);
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

/* ---------- 章节 ---------- */
.page-about .about-sec {
  min-width: 0;
  padding: 40px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-sec:first-child {
  border-top: 0;
  padding-top: 4px;
}

.page-about .about-sec__head {
  max-width: 64ch;
}

.page-about .about-sec h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(25px, 5.8vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-sec__lede {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--dim);
}

.page-about .about-text {
  margin-top: 24px;
  max-width: 66ch;
}

.page-about .about-text p {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--silver);
}

.page-about .about-text p + p {
  margin-top: 14px;
}

/* ---------- 01 起点 ---------- */
.page-about .about-origin {
  display: grid;
  gap: 28px;
  margin-top: 24px;
}

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

/* ---------- 02 使命三阶段 ---------- */
.page-about .about-stages {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.page-about .stage {
  position: relative;
  padding: 24px 22px 26px;
  background: var(--ink);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  border-top: 2px solid var(--cyan-32);
}

.page-about .stage__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-about .stage h3 {
  margin: 14px 0 0;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 500;
  color: var(--white);
}

.page-about .stage p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--dim);
}

.page-about .stage__gain {
  padding-top: 12px;
  border-top: 1px dashed var(--line-2);
  color: var(--lime) !important;
  font-size: 13.5px !important;
  letter-spacing: 0.02em;
}

/* ---------- 03 2026 路线 ---------- */
.page-about .about-roadmap {
  display: grid;
  gap: 30px;
  margin-top: 28px;
}

.page-about .rail {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  display: grid;
  gap: 28px;
  border-left: 1px solid var(--line-2);
}

.page-about .rail__item {
  position: relative;
  min-width: 0;
}

.page-about .rail__item::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 8px;
  width: 11px;
  height: 11px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-about .rail__item .tag {
  display: inline-block;
}

.page-about .rail__item h3 {
  margin: 12px 0 0;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 500;
  color: var(--white);
}

.page-about .rail__item p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--dim);
}

.page-about .rail__impact {
  padding-left: 12px;
  border-left: 2px solid var(--gold);
  color: var(--silver) !important;
  font-size: 14px !important;
}

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

/* ---------- 04 团队 ---------- */
.page-about .team-grid {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.page-about .team-card {
  min-width: 0;
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-about .team-card:hover,
.page-about .team-card:focus,
.page-about .team-card:focus-within {
  border-color: var(--cyan-32);
  transform: translateY(-4px);
  outline: none;
}

.page-about .team-card__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 34px;
  line-height: 1;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.page-about .team-card h3 {
  margin: 12px 0 0;
  font-size: 19px;
  font-weight: 500;
  color: var(--white);
}

.page-about .team-card__desc {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .team-card__more {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line-2);
  opacity: 1;
  max-height: none;
  transition: opacity 0.3s ease, max-height 0.35s ease;
}

.page-about .team-card__more p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--dim);
}

.page-about .about-team__media {
  margin: 30px 0 0;
}

/* ---------- 05 长期跟队 ---------- */
.page-about .follow-grid {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

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

.page-about .follow-steps li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-about .follow-steps li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .follow-steps__num {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.5;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-about .follow-steps h3 {
  margin: 0;
  font-size: 17.5px;
  font-weight: 500;
  color: var(--white);
}

.page-about .follow-steps p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--dim);
}

.page-about .follow-note {
  padding: 24px 22px;
  background: var(--ink);
  border-left: 3px solid var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .follow-note p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .follow-note__link a {
  color: var(--cyan);
  text-decoration: none;
  font-size: 14px;
}

.page-about .follow-note__link a:hover {
  text-decoration: underline;
}

/* ---------- 06 合作与认可 ---------- */
.page-about .eco-grid {
  display: grid;
  gap: 1px;
  margin-top: 28px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .eco-item {
  min-width: 0;
  padding: 22px 20px;
  background: var(--panel);
}

.page-about .eco-item h3 {
  margin: 12px 0 0;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 500;
  color: var(--white);
}

.page-about .eco-item p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--dim);
}

.page-about .eco-followup {
  margin: 22px 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .eco-followup a {
  color: var(--cyan);
  text-decoration: none;
}

.page-about .eco-followup a:hover {
  text-decoration: underline;
}

/* ---------- 07 发展历程 ---------- */
.page-about .years {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-about .years__item {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

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

.page-about .years__year {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

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

/* ---------- 结尾 CTA ---------- */
.page-about .about-cta {
  margin: 12px 0 8px;
  padding: 30px 24px 32px;
}

.page-about .about-cta h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(23px, 5vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-cta p {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--silver);
}

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

/* ---------- 悬停展开（仅桌面指针设备） ---------- */
@media (hover: hover) and (min-width: 820px) {
  .page-about .team-card__more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding-top: 0;
    border-top-color: transparent;
  }

  .page-about .team-card:hover .team-card__more,
  .page-about .team-card:focus .team-card__more,
  .page-about .team-card:focus-within .team-card__more {
    max-height: 260px;
    opacity: 1;
    padding-top: 12px;
    border-top-color: var(--line-2);
  }
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-stats li {
    padding: 18px 16px;
  }

  .page-about .years__item {
    grid-template-columns: 110px minmax(0, 1fr);
    align-items: baseline;
    gap: 0 26px;
    padding: 20px 0;
  }

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

@media (min-width: 860px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.75fr);
    align-items: end;
    gap: 48px;
    padding: 40px 0 56px;
  }

  .page-about .about-origin {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 36px;
  }

  .page-about .about-stages {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .follow-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 34px;
  }
}

@media (min-width: 960px) {
  .page-about .about-roadmap {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
    gap: 40px;
  }

  .page-about .about-cta {
    padding: 40px 34px 42px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-body {
    grid-template-columns: minmax(0, 1fr) var(--about-rail);
    column-gap: 64px;
    row-gap: 0;
    padding: 52px 0 88px;
  }

  .page-about .about-index {
    grid-column: 2;
    grid-row: 1;
    align-self: start;
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding: 0;
    border: 0;
  }

  .page-about .about-flow {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 2px;
    margin-top: 12px;
    padding: 0;
    overflow: visible;
  }

  .page-about .about-index__list li {
    flex: 0 0 auto;
  }

  .page-about .about-index__list a {
    width: 100%;
    justify-content: flex-start;
    padding: 9px 12px;
    background: transparent;
    border: 0;
    border-left: 2px solid var(--line);
  }

  .page-about .about-index__list a:hover,
  .page-about .about-index__list a:focus-visible {
    background: var(--cyan-08);
    border-left-color: var(--cyan-32);
  }

  .page-about .about-index__list a[aria-current="true"],
  .page-about .about-index__list a[aria-current="page"],
  .page-about .about-index__list a.is-active {
    background: var(--cyan-08);
    border-left-color: var(--cyan);
    color: var(--white);
  }

  .page-about .about-sec {
    padding: 56px 0;
  }

  .page-about .about-sec:first-child {
    padding-top: 8px;
  }

  .page-about .about-stages {
    margin-top: 34px;
  }
}

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

  .page-about .team-card,
  .page-about .team-card__more,
  .page-about .about-index__list a {
    transition: none;
  }

  .page-about .team-card:hover,
  .page-about .team-card:focus,
  .page-about .team-card:focus-within {
    transform: none;
  }
}