/* =========================================================
   看台文化页 /culture/  ·  page-about
   ========================================================= */

.page-about {
  counter-reset: about-sec;
  background: var(--paper);
  color: var(--ink);
}

.page-about .section {
  padding: clamp(54px, 8vw, 108px) 0;
}

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

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink);
  color: var(--chalk);
  padding: clamp(34px, 5vw, 68px) 0 clamp(40px, 6vw, 84px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(114deg, rgba(11, 26, 36, 0) 0 54%, rgba(18, 54, 72, 0.98) 54% 100%),
    radial-gradient(120% 100% at 0% 100%, rgba(30, 122, 78, 0.3) 0%, rgba(30, 122, 78, 0) 64%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  z-index: 0;
  width: clamp(72px, 16vw, 220px);
  height: clamp(72px, 16vw, 220px);
  pointer-events: none;
  background: linear-gradient(135deg, transparent 0 50%, var(--score) 50% 100%);
  opacity: 0.88;
}

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

.page-about .about-hero__crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 24px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.05em;
  color: var(--chalk-dim);
}

.page-about .about-hero__crumbs a {
  color: var(--chalk-text);
  text-decoration: none;
  border-bottom: 1px solid rgba(252, 251, 246, 0.28);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-hero__crumbs a:hover,
.page-about .about-hero__crumbs a:focus-visible {
  color: var(--chalk);
  border-color: var(--grass);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--grass);
}

.page-about .about-hero__title {
  margin: 0 0 22px;
  font-size: clamp(36px, 6vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.015em;
  color: var(--chalk);
}

.page-about .about-hero__lead {
  max-width: 40em;
  margin: 0;
  font-size: var(--fs-18);
  line-height: 1.85;
  color: var(--chalk-text);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 34px;
  margin: 34px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid rgba(201, 214, 220, 0.24);
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.04em;
  color: var(--chalk-dim);
}

.page-about .about-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-about .about-hero__meta b {
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 600;
  line-height: 1;
  color: var(--chalk);
  font-variant-numeric: tabular-nums;
}

/* ---------- 通用章节头 ---------- */

.page-about .about-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(26px, 4vw, 52px);
}

.page-about .about-head__no {
  font-family: var(--font-mono);
  font-size: var(--fs-40);
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--grass);
}

.page-about .about-head__no::before {
  counter-increment: about-sec;
  content: counter(about-sec, decimal-leading-zero);
}

.page-about .about-head__title {
  margin: 0 0 10px;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-head__lead {
  max-width: 46em;
  margin: 0;
  font-size: var(--fs-18);
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-head--dark .about-head__no,
.page-about .about-timeline .about-head__no,
.page-about .about-lines .about-head__no {
  color: var(--score);
}

.page-about .about-head--dark .about-head__title,
.page-about .about-timeline .about-head__title,
.page-about .about-lines .about-head__title {
  color: var(--chalk);
}

.page-about .about-head--dark .about-head__lead,
.page-about .about-timeline .about-head__lead,
.page-about .about-lines .about-head__lead {
  color: rgba(252, 251, 246, 0.62);
}

@media (min-width: 760px) {
  .page-about .about-head {
    grid-template-columns: 110px minmax(0, 1fr);
    align-items: start;
    gap: 0 28px;
  }
  .page-about .about-head__no {
    font-size: var(--fs-64);
    padding-top: 4px;
  }
}

/* ---------- 赛季时间轴 ---------- */

.page-about .about-timeline {
  background: var(--ink-blue);
  color: var(--chalk);
}

.page-about .about-timeline__grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.page-about .about-timeline__rail .rail-note {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(252, 251, 246, 0.44);
}

.page-about .about-timeline__media {
  margin: 0 0 clamp(28px, 4vw, 46px);
}

.page-about .about-timeline__media img {
  aspect-ratio: 14 / 9;
  filter: saturate(0.7) contrast(1.05);
}

.page-about .about-timeline__media .media__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.04em;
  color: rgba(252, 251, 246, 0.46);
}

.page-about .about-tl {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-tl__item {
  position: relative;
  margin: 0;
  padding: 0 0 30px 54px;
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--grass);
  box-shadow: 0 0 0 4px var(--ink-blue), 0 0 0 5px rgba(252, 251, 246, 0.5);
}

.page-about .about-tl__item::after {
  content: "";
  position: absolute;
  left: 10px;
  top: 26px;
  bottom: 0;
  width: 1px;
  background: repeating-linear-gradient(to bottom, rgba(252, 251, 246, 0.55) 0 4px, transparent 4px 10px);
}

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

.page-about .about-tl__item:last-child::after {
  content: none;
}

.page-about .about-tl__year {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--grass);
}

.page-about .about-tl__title {
  margin: 0 0 8px;
  font-size: var(--fs-22);
  line-height: 1.35;
  color: var(--chalk);
}

.page-about .about-tl__text {
  max-width: 44em;
  margin: 0;
  font-size: var(--fs-18);
  line-height: 1.82;
  color: rgba(252, 251, 246, 0.72);
}

@media (min-width: 760px) {
  .page-about .about-tl__item {
    padding: 0 0 38px 92px;
  }
  .page-about .about-tl__item::before {
    left: 16px;
  }
  .page-about .about-tl__item::after {
    left: 22px;
    top: 28px;
  }
  .page-about .about-tl__title {
    font-size: var(--fs-28);
  }
}

@media (min-width: 980px) {
  .page-about .about-timeline__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  }
  .page-about .about-timeline__rail {
    position: sticky;
    top: 120px;
    align-self: start;
    display: flex;
    justify-content: flex-start;
  }
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  background: var(--paper);
}

.page-about .about-team__top {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  margin-bottom: clamp(30px, 4vw, 54px);
}

.page-about .about-team__top-text p {
  margin: 0 0 1.2em;
  font-size: var(--fs-18);
  line-height: 1.85;
  color: var(--ink);
}

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

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

.page-about .about-team__media img {
  aspect-ratio: 3 / 2;
  border: 1px solid var(--grid);
}

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

.page-about .about-team__card {
  padding: clamp(20px, 2.6vw, 32px);
  background: var(--chalk);
  border-top: 3px solid var(--grass);
}

.page-about .about-team__card--b {
  border-top-color: var(--ink-blue);
}

.page-about .about-team__card--c {
  border-top-color: var(--score);
}

.page-about .about-team__tag {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--grass-deep);
}

.page-about .about-team__card--c .about-team__tag {
  color: var(--score-ink);
}

.page-about .about-team__card-title {
  margin: 0 0 10px;
  font-size: var(--fs-22);
  line-height: 1.3;
  color: var(--ink);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: var(--steel);
}

@media (min-width: 760px) {
  .page-about .about-team__top {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-team__cards {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr) minmax(0, 3fr);
    align-items: start;
    gap: 20px;
  }
  .page-about .about-team__card--b {
    margin-top: 26px;
  }
  .page-about .about-team__card--c {
    margin-top: 52px;
  }
}

/* ---------- 球迷组织 ---------- */

.page-about .about-orgs {
  background: var(--paper-deep);
}

.page-about .about-orgs__media {
  margin: 0 0 clamp(26px, 3.4vw, 44px);
}

.page-about .about-orgs__media img {
  aspect-ratio: 6 / 5;
  filter: saturate(0.72);
}

.page-about .about-orgs__media .media__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--steel);
}

.page-about .about-orgs__panel {
  position: relative;
}

.page-about .about-orgs__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-about .about-orgs__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-about .about-orgs__chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 15px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.05em;
  color: var(--ink);
  background: var(--chalk);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-orgs__chip:hover {
  border-color: var(--grass);
}

.page-about .about-orgs__radio:focus-visible + .about-orgs__chip {
  outline: 2px solid var(--grass);
  outline-offset: 2px;
}

.page-about #orgtype-all:checked ~ .about-orgs__filters [for="orgtype-all"],
.page-about #orgtype-cheer:checked ~ .about-orgs__filters [for="orgtype-cheer"],
.page-about #orgtype-flag:checked ~ .about-orgs__filters [for="orgtype-flag"],
.page-about #orgtype-away:checked ~ .about-orgs__filters [for="orgtype-away"],
.page-about #orgtype-community:checked ~ .about-orgs__filters [for="orgtype-community"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--chalk);
}

.page-about .about-orgs__canvas {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16px, 1fr));
  grid-auto-rows: 16px;
  gap: 5px;
  padding: clamp(16px, 2.4vw, 28px);
  background: var(--ink);
  border-radius: var(--radius);
}

.page-about .about-orgs__canvas .cell {
  display: block;
  min-width: 0;
  border-radius: 1px;
  background: var(--steel);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), background 0.28s var(--ease);
}

.page-about .cell--cheer {
  background: var(--grass);
}

.page-about .cell--flag {
  background: var(--score);
}

.page-about .cell--away {
  background: var(--grid);
}

.page-about .cell--community {
  background: var(--steel);
}

.page-about .about-orgs__filters:has(#orgtype-cheer:checked) ~ .about-orgs__canvas .cell:not(.cell--cheer),
.page-about .about-orgs__filters:has(#orgtype-flag:checked) ~ .about-orgs__canvas .cell:not(.cell--flag),
.page-about .about-orgs__filters:has(#orgtype-away:checked) ~ .about-orgs__canvas .cell:not(.cell--away),
.page-about .about-orgs__filters:has(#orgtype-community:checked) ~ .about-orgs__canvas .cell:not(.cell--community) {
  opacity: 0.12;
  transform: scale(0.68);
}

.page-about .about-orgs__note {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--steel);
}

.page-about .about-orgs__fields {
  display: grid;
  gap: 0;
  margin: clamp(30px, 4vw, 52px) 0 0;
}

.page-about .about-orgs__field {
  display: grid;
  gap: 5px;
  padding: 16px 0;
  border-bottom: 1px solid var(--grid);
}

.page-about .about-orgs__field dt {
  font-family: var(--font-mono);
  font-size: var(--fs-15);
  letter-spacing: 0.02em;
  color: var(--grass-deep);
}

.page-about .about-orgs__field dd {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.8;
  color: var(--ink);
}

@media (min-width: 760px) {
  .page-about .about-orgs__fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
  .page-about .about-orgs__field {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about .about-orgs__canvas {
    grid-template-columns: repeat(auto-fill, minmax(20px, 1fr));
    grid-auto-rows: 20px;
  }
}

/* ---------- 四条内容线 ---------- */

.page-about .about-lines {
  background: var(--ink);
  color: var(--chalk);
}

.page-about .about-lines__grid {
  display: grid;
  gap: 1px;
  background: rgba(201, 214, 220, 0.2);
  border: 1px solid rgba(201, 214, 220, 0.2);
}

.page-about .about-line {
  position: relative;
  padding: clamp(22px, 3vw, 40px);
  background: var(--ink);
  transition: background 0.28s var(--ease);
}

.page-about .about-line:hover {
  background: var(--ink-blue);
}

.page-about .about-line__tag {
  display: block;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.2em;
  color: var(--grass);
}

.page-about .about-line__title {
  margin: 0 0 12px;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.3;
  color: var(--chalk);
}

.page-about .about-line__text {
  margin: 0 0 18px;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: rgba(252, 251, 246, 0.68);
}

.page-about .about-line__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.06em;
  color: var(--chalk);
  text-decoration: none;
  border-bottom: 1px solid var(--grass);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-line__link:hover,
.page-about .about-line__link:focus-visible {
  color: var(--grass);
  border-color: var(--score);
}

@media (min-width: 860px) {
  .page-about .about-lines__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 单场档案 ---------- */

.page-about .about-archive {
  background: var(--paper);
}

.page-about .about-archive__grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.page-about .about-archive__rail .rail-note {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
}

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

.page-about .about-archive__row {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-top: 1px solid var(--grid);
}

.page-about .about-archive__row:last-child {
  border-bottom: 1px solid var(--grid);
}

.page-about .about-archive__row dt {
  font-family: var(--font-mono);
  font-size: var(--fs-15);
  letter-spacing: 0.02em;
  color: var(--score-ink);
}

.page-about .about-archive__row dd {
  margin: 0;
  font-size: var(--fs-18);
  line-height: 1.82;
  color: var(--ink);
}

@media (min-width: 780px) {
  .page-about .about-archive__row {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 24px;
    align-items: baseline;
    padding: 22px 0;
  }
}

@media (min-width: 980px) {
  .page-about .about-archive__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  }
  .page-about .about-archive__rail {
    display: flex;
    justify-content: flex-start;
  }
}

/* ---------- 入门三件事 ---------- */

.page-about .about-start {
  background: var(--paper-deep);
}

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

.page-about .about-start__row {
  display: grid;
  gap: 10px;
  padding: clamp(20px, 3vw, 34px) 0;
  border-bottom: 1px solid var(--grid);
}

.page-about .about-start__no {
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  line-height: 1;
  color: var(--grass-deep);
}

.page-about .about-start__title {
  margin: 0;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.3;
  color: var(--ink);
}

.page-about .about-start__body p {
  margin: 0 0 14px;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: var(--steel);
}

.page-about .about-start__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.06em;
  color: var(--grass-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--grass);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-start__link:hover,
.page-about .about-start__link:focus-visible {
  color: var(--score-ink);
  border-color: var(--score);
}

.page-about .about-start__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(28px, 4vw, 48px);
}

@media (min-width: 820px) {
  .page-about .about-start__row {
    grid-template-columns: 64px minmax(0, 4fr) minmax(0, 7fr);
    gap: 0 28px;
    align-items: baseline;
  }
  .page-about .about-start__no {
    font-size: var(--fs-28);
  }
  .page-about .about-start__body {
    padding-left: 0;
  }
}

@media (max-width: 480px) {
  .page-about .about-start__cta .btn {
    width: 100%;
    text-align: center;
  }
}

/* ---------- 动效收敛 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about .about-orgs__canvas .cell,
  .page-about .about-line,
  .page-about .about-orgs__chip,
  .page-about .about-orgs__filters:has(#orgtype-cheer:checked) ~ .about-orgs__canvas .cell:not(.cell--cheer),
  .page-about .about-orgs__filters:has(#orgtype-flag:checked) ~ .about-orgs__canvas .cell:not(.cell--flag),
  .page-about .about-orgs__filters:has(#orgtype-away:checked) ~ .about-orgs__canvas .cell:not(.cell--away),
  .page-about .about-orgs__filters:has(#orgtype-community:checked) ~ .about-orgs__canvas .cell:not(.cell--community) {
    transition: none;
  }
}