/* ================= 品牌自述 / who-we-are ================= */

.page-about {
  --about-axis: 138px;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding: 42px 0 12px;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 22px;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 6.2vw, 56px);
  line-height: 1.18;
  letter-spacing: 0.01em;
  color: var(--paper);
  margin: 14px 0 20px;
  max-width: 17em;
}

.page-about .about-hero__lede {
  max-width: 64ch;
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-about .about-figures__item {
  background: var(--blackout);
  padding: 18px 16px;
}

.page-about .about-figures__num {
  display: block;
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.1;
  color: var(--electric-blue);
  letter-spacing: 0.02em;
}

.page-about .about-figures__plus {
  color: var(--neon-purple);
  font-size: 20px;
  margin-left: 2px;
}

.page-about .about-figures__lb {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 时间轨道 ---------- */

.page-about .about-track__figure {
  margin: 28px 0 0;
}

.page-about .about-orbit {
  display: flex;
  gap: 1px;
  margin-top: 30px;
  background: var(--grid);
  border: 1px solid var(--grid);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .about-orbit__jump {
  flex: 0 0 auto;
  min-width: 150px;
  padding: 15px 16px;
  background: var(--panel);
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .about-orbit__jump:hover,
.page-about .about-orbit__jump:focus-visible {
  background: #1d1838;
  border-bottom-color: var(--neon-purple);
  outline: none;
}

.page-about .about-orbit__yr {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--paper);
}

.page-about .about-orbit__lb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--phosphor);
}

.page-about .about-track__list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}

.page-about .about-track__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 26px 0;
  border-bottom: 1px solid var(--grid);
}

.page-about .about-track__axis {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-track__year {
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: 0.08em;
  color: var(--paper);
}

.page-about .about-track__coord {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--phosphor);
}

.page-about .about-track__body h3 {
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.4;
  color: var(--paper);
  margin: 0 0 10px;
}

.page-about .about-track__body p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-track__body a {
  color: var(--link-teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-about .about-track__facts li {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--link-teal);
  border: 1px solid var(--grid);
  padding: 4px 10px;
}

/* ---------- 团队分工 ---------- */

.page-about .about-crew {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 28px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-about .about-crew__cell {
  background: var(--blackout);
  padding: 22px 20px;
  transition: background 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-about .about-crew__cell:hover,
.page-about .about-crew__cell:focus-within {
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--neon-purple), 0 0 22px -10px var(--neon-purple);
}

.page-about .about-crew__coord {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--electric-blue);
}

.page-about .about-crew__n {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 40px;
  line-height: 1;
  color: var(--arcade-orange);
}

.page-about .about-crew__unit {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--mist);
  margin-left: 4px;
}

.page-about .about-crew__role {
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.4;
  color: var(--paper);
  margin: 0 0 10px;
}

.page-about .about-crew__duty {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
  opacity: 0.62;
  transition: opacity 0.18s var(--ease), color 0.18s var(--ease);
}

.page-about .about-crew__cell:hover .about-crew__duty,
.page-about .about-crew__cell:focus-within .about-crew__duty {
  opacity: 1;
  color: var(--link-teal);
}

.page-about .about-crew__figure {
  margin: 28px 0 0;
}

.page-about .about-crew__subtitle {
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.45;
  color: var(--paper);
  margin: 40px 0 0;
}

.page-about .about-flow {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
  counter-reset: flow;
}

.page-about .about-flow__step {
  background: var(--blackout);
  padding: 18px 16px;
  counter-increment: flow;
}

.page-about .about-flow__step::before {
  content: counter(flow, decimal-leading-zero);
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--arcade-orange);
}

.page-about .about-flow__step h4 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--paper);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 规则校订 ---------- */

.page-about .about-rule__grid {
  margin-top: 28px;
}

.page-about .about-rule__card {
  padding: 24px 22px;
}

.page-about .about-rule__card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.45;
  color: var(--paper);
  margin: 14px 0 12px;
}

.page-about .about-rule__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-rule__card a {
  color: var(--link-teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 内容分级 ---------- */

.page-about .about-guard {
  display: grid;
  gap: 30px;
  margin-top: 28px;
}

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

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

.page-about .about-guard__list li {
  border-left: 2px solid var(--phosphor);
  padding-left: 16px;
}

.page-about .about-guard__k {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--phosphor);
}

.page-about .about-guard__v {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 场地共建 ---------- */

.page-about .about-partner__layout {
  display: grid;
  gap: 30px;
  margin-top: 28px;
}

.page-about .about-partner__visual {
  order: 2;
}

.page-about .about-dots {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  max-width: 260px;
}

.page-about .about-dots span {
  display: block;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--electric-blue);
  background: rgba(31, 182, 255, 0.16);
}

.page-about .about-dots span:nth-child(3n) {
  border-color: var(--neon-purple);
  background: rgba(168, 85, 247, 0.16);
}

.page-about .about-partner__visual-note {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-about .about-partner__text > p {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-switch .tabs__tab {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.page-about .about-switch .tabs__panel {
  padding: 20px 0 0;
}

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

.page-about .about-switch__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-switch__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--arcade-orange);
}

.page-about .about-switch__list a {
  color: var(--link-teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 下一段计划 ---------- */

.page-about .about-nextyear {
  display: grid;
  gap: 1px;
  margin-top: 28px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-about .about-nextyear__item {
  background: var(--blackout);
  padding: 24px 20px;
}

.page-about .about-nextyear__n {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 34px;
  line-height: 1;
  color: var(--arcade-orange);
}

.page-about .about-nextyear__item h3 {
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.45;
  color: var(--paper);
  margin: 0 0 10px;
}

.page-about .about-nextyear__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-next {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

/* ---------- 显现动效 ---------- */

.page-about [data-reveal] {
  opacity: 1;
}

.js .page-about [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.js .page-about [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .js .page-about [data-reveal],
  .page-about .about-crew__duty,
  .page-about .about-orbit__jump,
  .page-about .about-crew__cell {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- 断点 ---------- */

@media (min-width: 620px) {
  .page-about .about-flow {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 720px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-crew {
    grid-template-columns: repeat(12, 1fr);
  }

  .page-about .about-crew__cell--a { grid-column: span 7; }
  .page-about .about-crew__cell--b { grid-column: span 5; }
  .page-about .about-crew__cell--c { grid-column: span 5; }
  .page-about .about-crew__cell--d { grid-column: span 7; }

  .page-about .about-flow {
    grid-template-columns: repeat(5, 1fr);
  }

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

@media (min-width: 820px) {
  .page-about .about-hero {
    padding-top: 56px;
  }

  .page-about .about-track__row {
    grid-template-columns: var(--about-axis) 1fr;
    gap: 0;
    padding: 38px 0;
  }

  .page-about .about-track__axis {
    display: block;
    position: relative;
    text-align: right;
    padding-right: 26px;
    border-right: 1px solid var(--grid);
  }

  .page-about .about-track__axis::after {
    content: "";
    position: absolute;
    right: -4px;
    top: 10px;
    width: 7px;
    height: 7px;
    background: var(--neon-purple);
    box-shadow: 0 0 10px var(--neon-purple);
  }

  .page-about .about-track__coord {
    display: block;
    margin-top: 8px;
  }

  .page-about .about-track__body {
    padding-left: 36px;
  }

  .page-about .about-guard {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 44px;
  }

  .page-about .about-partner__layout {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-partner__visual {
    order: 0;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero__lede {
    font-size: 17px;
  }

  .page-about .about-crew__cell {
    padding: 28px 24px;
  }
}