.page-about {
  background: var(--night);
  color: var(--score);
  --about-line: #2A5A46;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(40px, 7vw, 88px) 0 clamp(36px, 6vw, 72px);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 84% 14%, rgba(46, 229, 157, 0.16), transparent 46%),
    radial-gradient(circle at 6% 92%, rgba(232, 255, 77, 0.08), transparent 42%),
    repeating-linear-gradient(90deg, rgba(42, 90, 70, 0.34) 0 1px, transparent 1px 92px);
}

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

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(40px, 8.4vw, 96px);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.page-about .about-lead {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: clamp(16px, 1.9vw, 19px);
  line-height: 1.8;
  color: rgba(244, 255, 248, 0.8);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(30px, 5vw, 52px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--r);
  overflow: hidden;
}

.page-about .about-figure {
  background: var(--stands);
  padding: 20px 16px;
}

.page-about .about-figure b {
  display: block;
  font-family: var(--mono);
  font-size: clamp(24px, 4.4vw, 38px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--volt);
}

.page-about .about-figure span {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 48px);
  padding-top: clamp(36px, 6vw, 72px);
  padding-bottom: clamp(56px, 9vw, 112px);
}

/* ---------- 章节刻度栏 ---------- */
.page-about .about-rail {
  border-top: 2px solid var(--board);
  padding-top: 16px;
}

.page-about .about-rail-title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-about .about-rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-rail-list::-webkit-scrollbar {
  display: none;
}

.page-about .about-rail-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--about-line);
  border-radius: 999px;
  white-space: nowrap;
  text-decoration: none;
  font-size: 13px;
  color: var(--muted);
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-about .about-rail-link b {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--turf);
}

.page-about .about-rail-link:hover,
.page-about .about-rail-link:focus-visible {
  border-color: var(--turf);
  color: var(--score);
  background: rgba(46, 229, 157, 0.09);
}

/* ---------- 章节 ---------- */
.page-about .about-chapter {
  position: relative;
  padding-top: clamp(30px, 4.6vw, 48px);
}

.page-about .about-chapter::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 2px;
  background: var(--turf);
}

.page-about .about-chapter + .about-chapter {
  margin-top: clamp(38px, 6vw, 76px);
  border-top: 1px solid var(--about-line);
}

.page-about .about-index {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--turf);
}

.page-about .about-chapter h2 {
  margin: 0 0 20px;
  font-size: clamp(25px, 4.2vw, 40px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.015em;
}

.page-about .about-chapter p {
  margin: 0 0 16px;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 255, 248, 0.78);
}

.page-about .about-chapter p a {
  color: var(--turf);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 229, 157, 0.4);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-about .about-chapter p a:hover,
.page-about .about-chapter p a:focus-visible {
  color: var(--volt);
  border-bottom-color: var(--volt);
}

.page-about .about-note {
  margin-top: 22px;
  padding: 16px 18px;
  border-left: 3px solid var(--turf);
  border-radius: 0 var(--r) var(--r) 0;
  background: rgba(27, 74, 56, 0.5);
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 255, 248, 0.86);
}

/* ---------- 时间轴 SVG ---------- */
.page-about .about-timeline {
  display: block;
  width: 100%;
  height: auto;
  margin: clamp(26px, 4vw, 40px) 0 0;
}

.page-about .about-timeline .about-tl-year {
  font-family: var(--mono);
  font-size: 19px;
  font-weight: 700;
  fill: #F4FFF8;
}

.page-about .about-timeline .about-tl-note {
  font-family: var(--sans);
  font-size: 14px;
  fill: #9BB8A8;
}

/* ---------- 图片 ---------- */
.page-about .about-shot {
  position: relative;
  margin: clamp(24px, 4vw, 40px) 0 0;
}

.page-about .about-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border-radius: var(--r);
  border: 1px solid var(--about-line);
}

.page-about .about-shot::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--r);
  pointer-events: none;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(46, 229, 157, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 229, 157, 0.16) 1px, transparent 1px);
  background-size: 46px 46px;
}

.page-about .about-shot .media-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  margin: 0;
  padding: 46px 18px 14px;
  border-radius: 0 0 var(--r) var(--r);
  background: linear-gradient(transparent, rgba(11, 31, 23, 0.92));
  font-size: 13px;
  line-height: 1.6;
  color: rgba(244, 255, 248, 0.84);
}

.page-about .about-shot--tall img {
  aspect-ratio: 4 / 5;
}

/* ---------- 联赛看板 ---------- */
.page-about .about-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 8px 0 0;
}

.page-about .about-league {
  background: var(--stands);
  border: 1px solid var(--about-line);
  border-radius: var(--r);
  padding: 18px 16px;
  transition: border-color 0.22s ease, background-color 0.22s ease, transform 0.22s ease;
}

.page-about .about-league:hover {
  border-color: var(--turf);
  background: var(--board);
  transform: translateY(-2px);
}

.page-about .about-league-name {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin: 0;
  font-size: 17px;
  font-weight: 700;
}

.page-about .about-league-abbr {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--turf);
}

.page-about .about-league-scope {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--muted);
}

/* ---------- 横向数据带 ---------- */
.page-about .about-band {
  display: flex;
  gap: 12px;
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 4px 0 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--board) transparent;
}

.page-about .about-band::-webkit-scrollbar {
  height: 4px;
}

.page-about .about-band::-webkit-scrollbar-thumb {
  background: var(--board);
  border-radius: 4px;
}

.page-about .about-band-item {
  flex: 0 0 clamp(190px, 54vw, 250px);
  scroll-snap-align: start;
  padding: 18px;
  border: 1px solid var(--about-line);
  border-radius: var(--r);
  background: linear-gradient(158deg, var(--board), var(--stands));
}

.page-about .about-band-key {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--volt);
}

.page-about .about-band-val {
  margin: 12px 0 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
}

.page-about .about-band-note {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 团队折叠 ---------- */
.page-about .about-roles {
  margin: 6px 0 0;
}

.page-about .about-role {
  margin-bottom: 10px;
  border: 1px solid var(--about-line);
  border-radius: var(--r);
  background: var(--stands);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.page-about .about-role[open] {
  border-color: var(--turf);
}

.page-about .about-role summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
}

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

.page-about .about-role summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 20px;
  line-height: 1;
  color: var(--turf);
}

.page-about .about-role[open] summary::after {
  content: "−";
  color: var(--volt);
}

.page-about .about-role p {
  margin: 0;
  padding: 0 18px 18px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 255, 248, 0.76);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  margin: 6px 0 0;
}

.page-about .about-partners {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .about-partner {
  padding: 16px 18px;
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--board);
  border-radius: 0 var(--r) var(--r) 0;
  background: rgba(18, 51, 40, 0.72);
  transition: border-left-color 0.22s ease, background-color 0.22s ease;
}

.page-about .about-partner:hover {
  border-left-color: var(--volt);
  background: var(--board);
}

.page-about .about-partner-kind {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--turf);
}

.page-about .about-partner p {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 255, 248, 0.76);
}

.page-about .about-partner-grid .about-shot {
  margin: 0;
}

/* ---------- 联系 ---------- */
.page-about .about-chapter--contact::before {
  background: var(--volt);
}

.page-about .about-contact-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--r);
  overflow: hidden;
}

.page-about .about-contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 16px 18px;
  background: var(--stands);
}

.page-about .about-contact-key {
  min-width: 76px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .about-contact-val {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--score);
  word-break: break-word;
}

.page-about .about-contact-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

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

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

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

@media (min-width: 1000px) {
  .page-about .about-shell {
    grid-template-columns: 172px minmax(0, 1fr);
    gap: clamp(48px, 6vw, 80px);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 104px;
  }

  .page-about .about-rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-rail-link {
    justify-content: flex-start;
    padding: 11px 12px;
    border: 0;
    border-left: 2px solid var(--board);
    border-radius: 0;
  }

  .page-about .about-rail-link:hover,
  .page-about .about-rail-link:focus-visible {
    border-left-color: var(--turf);
    background: rgba(46, 229, 157, 0.07);
  }

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

  .page-about .about-board {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-board {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-league {
    padding: 20px 12px;
  }

  .page-about .about-league-name {
    display: block;
    font-size: 15px;
  }

  .page-about .about-league-abbr {
    display: block;
    margin-top: 6px;
  }

  .page-about .about-league-scope {
    font-size: 12px;
    line-height: 1.95;
  }
}