.page-about {
  padding-bottom: calc(var(--bar) + 24px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 34px 0 46px;
  border-bottom: 2px solid var(--line);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: .55;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -50px;
  width: 230px;
  height: 230px;
  border: 2px solid var(--line);
  border-radius: 50%;
  opacity: .6;
  pointer-events: none;
}

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

.page-about .about-hero__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-about .about-hero__kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--cyan);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(40px, 11vw, 96px);
  font-weight: 700;
  line-height: .95;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-about .about-hero__title span {
  color: var(--cyan);
}

.page-about .about-hero__lead {
  margin: 22px 0 0;
  max-width: 44em;
  font-size: 16px;
  line-height: 1.8;
  color: #c6d1cb;
}

.page-about .about-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
}

.page-about .about-stat {
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 12px 14px;
  box-shadow: var(--shadow-hard);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

/* ---------- 通用章节 ---------- */
.page-about .about-section {
  padding: 46px 0;
  border-bottom: 2px solid var(--line);
}

.page-about .about-section:last-of-type {
  border-bottom: none;
}

.page-about .about-figure {
  margin: 24px 0 0;
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

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

.page-about .about-figure--wide img {
  aspect-ratio: 12 / 7;
}

.page-about .about-figure--side img {
  aspect-ratio: 9 / 7;
}

.page-about .about-figure .media__caption {
  margin: 0;
  padding: 10px 14px 12px;
  border-top: 2px solid var(--line);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 年份刻度时间轴 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 28px 26px;
  border-left: 2px solid var(--line);
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--green);
  border: 2px solid var(--ink);
  transition: background-color .18s ease, box-shadow .18s ease;
}

.page-about .timeline__item:hover::before,
.page-about .timeline__item:focus-within::before {
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(53, 232, 181, .15);
}

.page-about .timeline__inner {
  display: grid;
  gap: 8px;
}

.page-about .timeline__year-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: .04em;
  color: var(--clay);
}

.page-about .timeline__year-tag {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-about .timeline__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .timeline__desc {
  margin: 10px 0 0;
  max-width: 42em;
  font-size: 15.5px;
  line-height: 1.8;
  color: #b7c2bc;
}

/* ---------- 团队标签条 ---------- */
.page-about .team-strip {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.page-about .team-strip__item {
  position: relative;
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 22px 18px 22px;
  box-shadow: var(--shadow-hard);
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

.page-about .team-strip__item::before {
  content: "";
  position: absolute;
  left: -2px;
  top: -2px;
  width: 48px;
  height: 4px;
  background: var(--cyan);
}

.page-about .team-strip__item--orange::before {
  background: var(--orange);
}

.page-about .team-strip__item--green::before {
  background: var(--green);
}

.page-about .team-strip__item--clay::before {
  background: var(--clay);
}

.page-about .team-strip__item:hover,
.page-about .team-strip__item:focus-within {
  border-color: var(--cyan);
  box-shadow: var(--shadow-lift);
  transform: translateY(-3px);
}

.page-about .team-strip__item:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-about .team-strip__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-about .team-strip__name {
  margin: 12px 0 0;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .team-strip__desc {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #b3beb8;
}

.page-about .team-note {
  display: grid;
  gap: 22px;
  margin-top: 30px;
}

.page-about .team-note .about-figure {
  margin-top: 0;
}

.page-about .team-note__text h3 {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .team-note__text p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.8;
  color: #b7c2bc;
}

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

/* ---------- 战报产出流程 ---------- */
.page-about .flow {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
}

.page-about .flow__step {
  position: relative;
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 18px 16px 20px;
}

.page-about .flow__num {
  display: inline-block;
  padding: 3px 8px;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
}

.page-about .flow__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-about .flow__desc {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #b3beb8;
}

.page-about .about-section__foot {
  margin: 20px 0 0;
  padding: 14px 16px;
  border-left: 4px solid var(--orange);
  background: rgba(255, 138, 61, .07);
  font-size: 15px;
  line-height: 1.8;
  color: #c6d1cb;
}

/* ---------- 数据校验 ---------- */
.page-about .check-grid {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

.page-about .check-grid .about-figure {
  margin-top: 0;
}

.page-about .check-body p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.8;
  color: #b7c2bc;
}

.page-about .check-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
}

.page-about .check-tags li {
  padding: 6px 10px;
  border: 2px solid var(--line);
  background: var(--panel);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--paper);
}

/* ---------- 本地服务 ---------- */
.page-about .about-local {
  background:
    linear-gradient(180deg, rgba(18, 163, 107, .07), transparent 62%),
    var(--ink);
}

.page-about .local-grid {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

.page-about .local-figure {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  padding: 26px 22px;
}

.page-about .local-figure__num {
  font-family: var(--font-mono);
  font-size: 46px;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-about .local-figure__num small {
  font-size: 20px;
}

.page-about .local-figure__label {
  font-size: 15px;
  color: var(--paper);
}

.page-about .local-figure__sub {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--orange);
}

.page-about .local-list {
  list-style: none;
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
}

.page-about .local-list li {
  padding-top: 16px;
  border-top: 2px solid var(--line);
  font-size: 15.5px;
  line-height: 1.8;
  color: #b7c2bc;
}

.page-about .local-list strong {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
}

/* ---------- 后续计划 ---------- */
.page-about .next-list {
  list-style: none;
  display: grid;
  margin: 28px 0 0;
  padding: 0;
  border-top: 2px solid var(--line);
}

.page-about .next-list li {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 2px solid var(--line);
}

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

.page-about .next-list h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .next-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: #b3beb8;
}

/* ---------- 相关栏目 ---------- */
.page-about .about-links {
  display: grid;
  gap: 12px;
  padding: 40px 0 8px;
}

.page-about .about-links__item {
  display: block;
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 16px;
  text-decoration: none;
  transition: border-color .16s ease, background-color .16s ease, transform .16s ease;
}

.page-about .about-links__item:hover,
.page-about .about-links__item:focus-visible {
  border-color: var(--cyan);
  background: rgba(53, 232, 181, .07);
  transform: translateY(-2px);
  outline: none;
}

.page-about .about-links__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--clay);
}

.page-about .about-links__name {
  display: block;
  margin-top: 9px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .about-links__desc {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    max-width: 780px;
  }

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

@media (min-width: 860px) {
  .page-about .about-hero {
    padding: 54px 0 60px;
  }

  .page-about .timeline__inner {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }

  .page-about .timeline__item {
    padding-left: 32px;
  }
}

@media (min-width: 880px) {
  .page-about .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
  }

  .page-about .flow__step::after {
    content: "";
    position: absolute;
    right: -10px;
    top: 34px;
    width: 10px;
    height: 2px;
    background: var(--cyan);
  }

  .page-about .flow__step:last-child::after {
    display: none;
  }

  .page-about .local-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 30px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-section {
    padding: 58px 0;
  }

  .page-about .team-note {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }

  .page-about .check-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .next-list li {
    grid-template-columns: 64px minmax(0, 190px) minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
  }
}

@media (min-width: 1040px) {
  .page-about .team-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 720px) and (max-width: 1039px) {
  .page-about .about-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

  .page-about .team-strip__item:hover,
  .page-about .team-strip__item:focus-within,
  .page-about .about-links__item:hover,
  .page-about .about-links__item:focus-visible {
    transform: none;
  }
}