.page-about {
  --about-rail: 46px;
  --about-dot: 12px;
}

.page-about .grid {
  display: grid;
  gap: var(--gap);
}

.page-about .section {
  border-top: 1px solid var(--line);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: 34px 0 34px;
  border-top: 2px solid var(--line);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--arcade-cyan);
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--text);
  max-width: 20ch;
  text-shadow: 0 0 22px rgba(122, 59, 255, 0.4);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  border: 2px solid var(--line);
  border-bottom: 0;
  border-right: 0;
  background: var(--night);
  box-shadow: var(--hard-shadow);
}

.page-about .stat-block {
  padding: 16px 14px 18px;
  border-right: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
  background: var(--slate);
}

.page-about .stat-block__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.1;
  color: var(--arcade-cyan);
}

.page-about .stat-block__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-dim);
}

.page-about .stat-block:nth-child(3n + 2) .stat-block__num {
  color: var(--alert-orange);
}

.page-about .stat-block:nth-child(3n) .stat-block__num {
  color: var(--badge-pink);
}

/* ---------- 起点区块 ---------- */

.page-about .about-era__idx {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--alert-orange);
}

.page-about .about-era__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 26px;
  line-height: 1.3;
  color: var(--text);
}

.page-about .about-era__body p {
  margin: 0 0 0.9em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

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

/* ---------- 展签与团队 ---------- */

.page-about .plate {
  margin-bottom: 26px;
}

.page-about .about-team .plate__title,
.page-about .about-fields .plate__title,
.page-about .about-chrono .plate__title,
.page-about .about-partners .plate__title {
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-about .ledger {
  display: grid;
  grid-template-columns: 1fr;
  border: 2px solid var(--line);
  background: var(--night);
  box-shadow: var(--hard-shadow);
}

.page-about .ledger-cell {
  position: relative;
  padding: 20px 18px 22px;
  border-bottom: 2px solid var(--line);
  background: var(--slate);
}

.page-about .ledger-cell:last-child {
  border-bottom: 0;
}

.page-about .ledger-cell:nth-child(2) {
  background: linear-gradient(180deg, rgba(15, 90, 70, 0.55), var(--slate) 82%);
}

.page-about .ledger-cell:nth-child(4) {
  background: linear-gradient(180deg, rgba(42, 22, 96, 0.85), var(--slate) 82%);
}

.page-about .ledger-cell__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--text-dim);
}

.page-about .ledger-cell__num {
  margin: 10px 0 10px;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  color: var(--arcade-cyan);
}

.page-about .ledger-cell__unit {
  margin-left: 4px;
  font-size: 14px;
  color: var(--text-dim);
}

.page-about .ledger-cell__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 图片容器 ---------- */

.page-about .media-frame {
  margin: 28px 0 0;
  border: 2px solid var(--line);
  background: var(--slate);
  box-shadow: var(--hard-shadow);
}

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

.page-about .media-frame__cap {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 字段表 ---------- */

.page-about .about-fields__scroll {
  overflow-x: auto;
  border: 2px solid var(--line);
  background: var(--night);
  box-shadow: var(--hard-shadow);
  -webkit-overflow-scrolling: touch;
}

.page-about .about-fields .data-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-about .about-fields .data-table th,
.page-about .about-fields .data-table td {
  padding: 12px 14px;
  text-align: left;
  line-height: 1.6;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.page-about .about-fields .data-table thead th {
  background: var(--violet-shell);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.page-about .about-fields .data-table tbody tr:nth-child(odd) {
  background: rgba(15, 90, 70, 0.35);
}

.page-about .about-fields .data-table tbody tr:last-child th,
.page-about .about-fields .data-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-about .field-key {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  color: var(--arcade-cyan);
  white-space: nowrap;
}

.page-about .about-fields__notes {
  margin-top: 22px;
  padding-left: 16px;
  border-left: 6px solid var(--alert-orange);
}

.page-about .about-fields__notes p {
  margin: 0 0 0.8em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

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

/* ---------- 赛季时间轴 ---------- */

.page-about .about-chrono__figure {
  margin-top: 0;
}

.page-about .about-timeline {
  position: relative;
  margin: 34px 0 0;
  padding: 0 0 0 var(--about-rail);
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--neon-purple), var(--arcade-cyan) 52%, var(--alert-orange));
}

.page-about .tl-item {
  position: relative;
  padding-bottom: 26px;
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -38px;
  top: 20px;
  width: var(--about-dot);
  height: var(--about-dot);
  border-radius: 50%;
  background: var(--night);
  border: 2px solid var(--arcade-cyan);
  box-shadow: 0 0 0 4px rgba(34, 224, 214, 0.14);
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.page-about .tl-item:hover::before {
  transform: scale(1.3);
  border-color: var(--badge-pink);
  box-shadow: 0 0 0 6px rgba(255, 95, 210, 0.24);
}

.page-about .tl-item__inner {
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-left: 6px solid var(--neon-purple);
  background: var(--slate);
}

.page-about .tl-item--cyan .tl-item__inner {
  border-left-color: var(--arcade-cyan);
}

.page-about .tl-item--green .tl-item__inner {
  border-left-color: #1c8f6d;
  background: linear-gradient(120deg, rgba(15, 90, 70, 0.62), var(--slate) 78%);
}

.page-about .tl-item--orange .tl-item__inner {
  border-left-color: var(--alert-orange);
}

.page-about .tl-item--pink .tl-item__inner {
  border-left-color: var(--badge-pink);
  background: linear-gradient(120deg, rgba(42, 22, 96, 0.9), var(--slate) 78%);
}

.page-about .tl-item__span {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--arcade-cyan);
}

.page-about .tl-item__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.35;
  color: var(--text);
}

.page-about .tl-item__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 联办 ---------- */

.page-about .about-partners__figure {
  margin-top: 0;
}

.page-about .about-partners__text p {
  margin: 0 0 0.9em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

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

.page-about .fold {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-left: 6px solid var(--alert-orange);
  background: var(--slate);
  padding: 14px 16px;
}

.page-about .fold summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
}

.page-about .fold summary::-webkit-details-marker {
  display: none;
}

.page-about .fold summary::before {
  content: "＋";
  display: inline-block;
  margin-right: 10px;
  font-family: var(--font-mono);
  color: var(--alert-orange);
}

.page-about .fold[open] summary::before {
  content: "－";
}

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

.page-about .fold__body {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.page-about .fold__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 本地赛季与联系 ---------- */

.page-about .about-local__idx {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--badge-pink);
}

.page-about .about-local__title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 26px;
  line-height: 1.3;
  color: var(--text);
}

.page-about .about-local__body .prose p {
  margin: 0 0 0.9em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-local__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 0;
}

.page-about .about-local__links .chip {
  text-decoration: none;
}

.page-about .contact-card {
  border: 2px solid var(--line);
  background: var(--violet-shell);
  padding: 22px 20px 20px;
  box-shadow: var(--hard-shadow);
}

.page-about .contact-card__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 19px;
  color: var(--text);
}

.page-about .contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(58, 63, 85, 0.85);
}

.page-about .contact-row--last {
  border-bottom: 0;
}

.page-about .contact-row__label {
  flex: 0 0 auto;
  min-width: 68px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--arcade-cyan);
}

.page-about .contact-row__value {
  flex: 1 1 180px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text);
  word-break: break-word;
}

.page-about .contact-card__note {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(231, 233, 242, 0.3);
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-about .about-hero {
    padding: 46px 0 40px;
  }

  .page-about .about-hero__title {
    font-size: 38px;
  }

  .page-about .about-hero__lead {
    font-size: 16px;
  }

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

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

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

  .page-about .ledger-cell:nth-child(odd) {
    border-right: 2px solid var(--line);
  }

  .page-about .ledger-cell:nth-child(3),
  .page-about .ledger-cell:nth-child(4) {
    border-bottom: 0;
  }
}

@media (min-width: 960px) {
  .page-about .grid--split {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-about .grid--split-rev {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-about .about-era__title,
  .page-about .about-local__title {
    font-size: 30px;
  }

  .page-about .about-hero__title {
    font-size: 44px;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  /* 时间轴改为左右交替 */
  .page-about .about-timeline {
    padding-left: 0;
  }

  .page-about .about-timeline::before {
    left: 50%;
    margin-left: -1px;
  }

  .page-about .tl-item {
    width: 50%;
    padding-right: 44px;
    padding-bottom: 34px;
  }

  .page-about .tl-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 44px;
  }

  .page-about .tl-item::before {
    left: auto;
    right: -7px;
  }

  .page-about .tl-item:nth-child(even)::before {
    right: auto;
    left: -7px;
  }

  .page-about .about-partners__figure,
  .page-about .about-partners__body {
    margin-top: 0;
  }

  .page-about .contact-card {
    padding: 26px 24px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-item::before {
    transition: none;
  }

  .page-about .tl-item:hover::before {
    transform: none;
  }
}