.page-about {
  --rail-w: 204px;
  --about-stroke: rgba(32, 48, 79, 0.9);
  position: relative;
  padding-bottom: clamp(40px, 7vw, 96px);
  background-color: transparent;
  background-image:
    radial-gradient(900px 420px at 88% -6%, rgba(77, 163, 255, 0.14), transparent 70%),
    radial-gradient(700px 380px at 4% 24%, rgba(40, 224, 168, 0.09), transparent 72%),
    repeating-linear-gradient(90deg, rgba(32, 48, 79, 0.22) 0 1px, transparent 1px 56px);
}

.page-about [data-filter-item][hidden] {
  display: none;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 52px);
  align-items: start;
  padding: clamp(18px, 3vw, 40px) 0 clamp(30px, 5vw, 68px);
}

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

.page-about .about-hero__lead h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
}

.page-about .about-hero__stat {
  padding-left: 12px;
  border-left: 1px solid var(--grid);
}

.page-about .about-hero__stat dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .about-hero__stat dd {
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin: 7px 0 0;
}

.page-about .about-hero__stat .num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-hero__stat .unit {
  font-size: 13px;
  color: var(--muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  aspect-ratio: 5 / 3;
  border: 1px solid var(--grid);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--panel);
  transform: skewY(-1.6deg);
}

.page-about .about-hero__figure img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.85) contrast(1.05);
}

.page-about .about-hero__figure .media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--ink);
  background: linear-gradient(180deg, transparent, rgba(7, 11, 24, 0.88));
}

/* ---------- 赛季沿革 ---------- */
.page-about .season-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 44px);
  margin-top: clamp(22px, 3.5vw, 40px);
}

.page-about .season-rail {
  padding-top: 14px;
  border-top: 1px solid var(--grid);
}

.page-about .season-rail .annotation {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--link);
}

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

.page-about .season-rail__list::-webkit-scrollbar {
  display: none;
}

.page-about .season-rail__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 11px;
  border-radius: 8px;
  border-left: 2px solid transparent;
  font-size: 13px;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  transition: background 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}

.page-about .season-rail__link .num {
  font-family: var(--font-mono);
  color: var(--ink);
  font-size: 13px;
}

.page-about .season-rail__link em {
  font-style: normal;
}

.page-about .season-rail__link:hover {
  background: var(--raise);
  color: var(--ink);
  border-left-color: var(--cyan);
}

.page-about .season-rail__link:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .chip-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-about .timeline {
  position: relative;
  margin: clamp(18px, 2.6vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .tl-node {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 0 0 clamp(20px, 3vw, 32px) 22px;
  border-left: 1px dashed var(--grid);
}

.page-about .tl-node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--grid);
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-about .tl-node__year {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-about .tl-node__body {
  padding: clamp(16px, 2vw, 24px);
  border: 1px solid var(--grid);
  border-radius: var(--radius-card);
  background: var(--panel);
  transform: skewY(-2deg);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-about .tl-node__body > * {
  transform: skewY(2deg);
}

.page-about .tl-node__body .card__title {
  margin: 0 0 8px;
  font-size: clamp(17px, 1.8vw, 20px);
  color: var(--ink);
}

.page-about .tl-node__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .tl-node__body .note {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--link);
}

.page-about .tl-node:hover .tl-node__body {
  transform: skewY(0deg);
  border-color: rgba(77, 163, 255, 0.5);
}

.page-about .tl-node:target::before {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(40, 224, 168, 0.18);
}

.page-about .tl-node:target .tl-node__body {
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(40, 224, 168, 0.35), 0 16px 40px rgba(7, 11, 24, 0.6);
}

.page-about .tl-node:target .tl-node__year {
  color: var(--cyan);
}

/* ---------- 团队 ---------- */
.page-about .team-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  margin-top: clamp(22px, 3.5vw, 38px);
}

.page-about .role-band {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--grid);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--panel);
}

.page-about .role {
  position: relative;
  padding: clamp(18px, 2.2vw, 28px);
  border-top: 1px solid var(--grid);
  outline-offset: -3px;
  transition: background 0.25s ease;
}

.page-about .role:first-child {
  border-top: none;
}

.page-about .role::before {
  content: "";
  display: block;
  width: 34px;
  height: 3px;
  border-radius: 2px;
  margin-bottom: 14px;
  background: var(--link);
}

.page-about .role--collect::before {
  background: var(--live);
}

.page-about .role--entry::before {
  background: var(--link);
}

.page-about .role--review::before {
  background: var(--cyan);
}

.page-about .role--fix::before {
  background: var(--amber);
}

.page-about .role::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent 85%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.32s ease;
}

.page-about .role:hover,
.page-about .role:focus-within {
  background: var(--raise);
}

.page-about .role:hover::after,
.page-about .role:focus-within::after {
  transform: scaleX(1);
}

.page-about .role__index {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--link);
}

.page-about .role__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.page-about .role__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  transition: color 0.25s ease;
}

.page-about .role:hover .role__note,
.page-about .role:focus-within .role__note {
  color: var(--ink);
}

.page-about .team-figure {
  position: relative;
  margin: 0;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--grid);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--panel);
  transform: skewY(1.4deg);
}

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

.page-about .team-figure .media-frame__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink);
  background: linear-gradient(180deg, transparent, rgba(7, 11, 24, 0.88));
}

/* ---------- 季票服务 ---------- */
.page-about .ticket-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
  margin-top: clamp(22px, 3.5vw, 38px);
}

.page-about .ticket-figure {
  position: relative;
  margin: 0;
  aspect-ratio: 11 / 7;
  border: 1px solid var(--grid);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--panel);
  transform: skewY(1.6deg);
}

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

.page-about .ticket-figure .media-frame__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink);
  background: linear-gradient(180deg, transparent, rgba(7, 11, 24, 0.88));
}

.page-about .ticket-steps {
  display: grid;
  gap: 16px;
}

.page-about .ticket-step {
  padding: 4px 0 4px 16px;
  border-left: 2px solid var(--grid);
}

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

.page-about .ticket-step h3 {
  margin: 7px 0 7px;
  font-size: 17px;
  color: var(--ink);
}

.page-about .ticket-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .partner-note {
  margin-top: clamp(20px, 3vw, 32px);
  padding: clamp(16px, 2vw, 24px);
  border: 1px solid var(--grid);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius-ticket);
  background: var(--raise);
}

.page-about .partner-note__k {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .partner-note p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .partner-note .num {
  font-family: var(--font-mono);
  color: var(--ink);
  word-break: break-all;
}

/* ---------- 覆盖范围 ---------- */
.page-about .scale-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(22px, 3.5vw, 40px);
}

.page-about .scale-card {
  position: relative;
  padding: clamp(18px, 2.2vw, 26px);
  border: 1px solid var(--grid);
  border-radius: var(--radius-card);
  background: linear-gradient(160deg, var(--panel), rgba(13, 20, 40, 0.55));
  overflow: hidden;
}

.page-about .scale-card::after {
  content: "";
  position: absolute;
  right: -30px;
  top: -30px;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(40, 224, 168, 0.14), transparent 68%);
  pointer-events: none;
}

.page-about .scale-card__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-about .scale-card__num span {
  margin-left: 4px;
  font-size: 14px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.page-about .scale-card__title {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--ink);
}

.page-about .scale-card p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .scale-card--g {
  background: linear-gradient(140deg, rgba(40, 224, 168, 0.12), var(--panel) 62%);
  border-color: rgba(40, 224, 168, 0.4);
}

.page-about .scale-card--g .scale-card__num {
  font-size: clamp(22px, 2.6vw, 30px);
}

.page-about .scale-card--g p:last-child {
  max-width: 60ch;
}

/* ---------- 响应机制 ---------- */
.page-about .support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(22px, 3.5vw, 38px);
}

.page-about .support-card {
  padding: clamp(18px, 2.3vw, 26px);
  border: 1px solid var(--grid);
  border-top: 3px solid var(--link);
  border-radius: var(--radius-card);
  background: var(--panel);
}

.page-about .support-card--mail {
  border-top-color: var(--cyan);
}

.page-about .support-card--phone {
  border-top-color: var(--link);
}

.page-about .support-card--time {
  border-top-color: var(--live);
}

.page-about .support-card__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .support-card__value {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(16px, 1.8vw, 20px);
  color: var(--ink);
  word-break: break-word;
}

.page-about .support-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .support-foot {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(18px, 2.6vw, 28px);
  padding-top: clamp(16px, 2.2vw, 24px);
  border-top: 1px solid var(--grid);
}

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

.page-about .support-foot__addr .num {
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--link);
}

.page-about .support-foot__fix {
  padding-left: 14px;
  border-left: 2px solid var(--amber);
}

/* ---------- 合作生态 ---------- */
.page-about .eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(22px, 3.5vw, 38px);
}

.page-about .eco-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.3vw, 28px);
  border: 1px solid var(--grid);
  border-radius: var(--radius-card);
  background: var(--panel);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-about .eco-card:hover {
  border-color: rgba(77, 163, 255, 0.55);
  transform: translateY(-3px);
}

.page-about .eco-card__tag {
  margin: 0;
  align-self: flex-start;
  padding: 4px 10px;
  border: 1px solid rgba(77, 163, 255, 0.45);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--link);
}

.page-about .eco-card h3 {
  margin: 0;
  font-size: 18px;
  color: var(--ink);
}

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

.page-about .eco-card__link {
  margin-top: auto;
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(40, 224, 168, 0.35);
  align-self: flex-start;
}

.page-about .eco-card__link:hover {
  color: var(--ink);
  border-bottom-color: var(--cyan);
}

/* ---------- 下一步 ---------- */
.page-about .next-band {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 30px);
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--grid);
  border-radius: var(--radius-card);
  background:
    linear-gradient(115deg, rgba(77, 163, 255, 0.14), transparent 55%),
    var(--raise);
}

.page-about .next-band__lead h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 32px);
  color: var(--ink);
}

.page-about .next-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .next-links a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border: 1px solid var(--grid);
  border-radius: 10px;
  background: rgba(7, 11, 24, 0.5);
  font-size: 15px;
  color: var(--ink);
  text-decoration: none;
  transition: border-color 0.22s ease, background 0.22s ease;
}

.page-about .next-links .num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .next-links a:hover {
  border-color: var(--cyan);
  background: rgba(40, 224, 168, 0.08);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero__figure {
    transform: skewY(-2.2deg);
  }

  .page-about .tl-node {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 6px 18px;
    padding-left: 28px;
    align-items: start;
  }

  .page-about .tl-node__year {
    padding-top: 16px;
    font-size: 20px;
    color: var(--cyan);
  }

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

  .page-about .scale-card--g {
    grid-column: span 2;
  }
}

@media (min-width: 880px) {
  .page-about .role-band {
    grid-template-columns: 1.05fr 0.95fr 1.25fr 0.85fr;
  }

  .page-about .role {
    border-top: none;
    border-left: 1px solid var(--grid);
  }

  .page-about .role:first-child {
    border-left: none;
  }

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

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

  .page-about .support-foot {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
    align-items: center;
  }

  .page-about .ticket-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

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

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

@media (min-width: 1000px) {
  .page-about .season-layout {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: clamp(26px, 3vw, 48px);
  }

  .page-about .season-rail {
    position: sticky;
    top: 104px;
    align-self: start;
    padding: 0 0 0 14px;
    border-top: none;
    border-left: 1px solid var(--grid);
  }

  .page-about .season-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }

  .page-about .season-rail__link {
    justify-content: flex-start;
    padding: 8px 10px;
  }
}

@media (min-width: 1160px) {
  .page-about .scale-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .scale-card--a {
    grid-column: span 5;
  }

  .page-about .scale-card--b {
    grid-column: span 4;
    margin-top: 28px;
  }

  .page-about .scale-card--c {
    grid-column: span 3;
    margin-top: 56px;
  }

  .page-about .scale-card--d {
    grid-column: span 4;
  }

  .page-about .scale-card--e {
    grid-column: span 5;
    margin-top: 24px;
  }

  .page-about .scale-card--f {
    grid-column: span 3;
    margin-top: 48px;
  }

  .page-about .scale-card--g {
    grid-column: span 12;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-node__body,
  .page-about .about-hero__figure,
  .page-about .team-figure,
  .page-about .ticket-figure,
  .page-about .eco-card {
    transform: none;
    transition: none;
  }

  .page-about .tl-node__body > * {
    transform: none;
  }
}