/* ===== 品牌档案页 / page-about ===== */

.page-about {
  --about-shadow: 6px 6px 0 0 var(--line-blue);
  --about-shadow-ink: 6px 6px 0 0 var(--sea-deep);
  --about-rail-w: 104px;
  background: var(--sea-deep);
  color: var(--text);
  font-family: var(--font-body);
}

/* --- 面包屑 --- */
.page-about .about-crumbs {
  padding-top: clamp(14px, 2vw, 22px);
}

.page-about .about-crumbs .ly-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-dim);
}

.page-about .about-crumbs .ly-crumbs a {
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-crumbs .ly-crumbs a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .about-crumbs .ly-crumbs [aria-current="page"] {
  color: var(--ivory);
}

/* --- 首屏 --- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(28px, 5vw, 64px) clamp(40px, 6vw, 88px);
}

.page-about .about-hero::after {
  content: "";
  display: block;
  height: 3px;
  margin-top: clamp(36px, 5vw, 72px);
  background: linear-gradient(90deg, var(--cyan) 0%, var(--teal) 38%, var(--amber) 68%, var(--violet) 100%);
}

.page-about .about-hero__kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 clamp(16px, 2.4vw, 30px);
  font-family: var(--font-num);
  font-size: clamp(11px, 1vw, 13px);
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-about .about-hero__kicker::before {
  content: "";
  flex: none;
  width: clamp(36px, 5vw, 64px);
  height: 2px;
  background: var(--cyan);
}

.page-about .about-hero__title {
  margin: 0;
  max-width: 18ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.2vw, 100px);
  line-height: .98;
  letter-spacing: -.02em;
  color: var(--ivory);
}

.page-about .about-hero__lede {
  margin: clamp(20px, 3vw, 36px) 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.15vw, 18px);
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(32px, 4.5vw, 62px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line-blue);
  border: 2px solid var(--line-blue);
}

.page-about .about-hero__stats > li {
  min-width: 0;
  padding: clamp(16px, 2.2vw, 30px);
  background: var(--sea-night);
}

.page-about .about-hero__stats .ly-stat__value {
  display: block;
  font-family: var(--font-num);
  font-weight: 600;
  font-size: clamp(22px, 2.7vw, 40px);
  line-height: 1.05;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__stats .ly-stat__label {
  display: block;
  margin-top: 10px;
  font-family: var(--font-index);
  font-size: 12px;
  line-height: 1.55;
  letter-spacing: .06em;
  color: var(--text-dim);
}

/* --- 章节标题组 --- */
.page-about .about-head {
  max-width: 82ch;
  margin-bottom: clamp(26px, 3.6vw, 48px);
}

.page-about .about-head .ly-section__index {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--teal);
}

.page-about .about-head .ly-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 3.6vw, 52px);
  line-height: 1.06;
  letter-spacing: -.01em;
  color: var(--ivory);
}

.page-about .about-head .ly-lede {
  margin: 16px 0 0;
  font-size: clamp(15px, 1.1vw, 18px);
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-head .ly-lede a,
.page-about .about-step p a,
.page-about .about-cta__text a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.page-about .about-head .ly-lede a:hover,
.page-about .about-step p a:hover,
.page-about .about-cta__text a:hover {
  color: var(--ivory);
  text-decoration-color: var(--ivory);
}

/* --- 赛季历程 --- */
.page-about .about-timeline {
  padding-block: clamp(46px, 7vw, 100px);
  border-top: 1px solid var(--line-blue);
}

.page-about .about-banner {
  margin: 0 0 clamp(28px, 4vw, 52px);
  border: 3px solid var(--line-blue);
  box-shadow: var(--about-shadow);
  background: var(--sea-night);
}

.page-about .about-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(.92) contrast(1.06);
}

.page-about .about-banner figcaption {
  padding: 12px clamp(14px, 2vw, 20px);
  font-family: var(--font-index);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .05em;
  color: var(--text-dim);
  border-top: 2px solid var(--line-blue);
}

.page-about .about-timeline__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.5vw, 40px);
}

.page-about .about-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-about .about-rail__item {
  flex: none;
  padding: 7px 12px;
  border: 1px solid var(--line-blue);
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--text-dim);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-rail__item:hover,
.page-about .about-rail__item:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-about .about-drawers {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.page-about .ly-disclosure__item {
  min-width: 0;
  scroll-margin-top: 140px;
  background: var(--sea-night);
  border: 2px solid var(--line-blue);
  transition: border-color .24s var(--ease);
}

.page-about .ly-disclosure__item[data-open] {
  border-color: var(--cyan);
}

.page-about .ly-disclosure__btn {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  width: 100%;
  padding: clamp(14px, 2vw, 24px);
  background: transparent;
  border: 0;
  color: var(--ivory);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-about .ly-disclosure__index {
  font-family: var(--font-num);
  font-weight: 600;
  font-size: clamp(15px, 1.6vw, 22px);
  letter-spacing: .04em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-drawer__title {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 1.8vw, 26px);
  line-height: 1.22;
  color: var(--ivory);
}

.page-about .about-drawer__meta {
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--moss);
  white-space: nowrap;
}

.page-about .ly-disclosure__panel {
  margin-top: 0;
  padding: clamp(16px, 2vw, 24px) clamp(14px, 2vw, 26px) clamp(18px, 2.2vw, 28px) clamp(14px, 2vw, 26px);
  border-top: 1px dashed var(--line-blue);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-about .ly-disclosure__panel p {
  margin: 0;
}

.page-about .about-drawer__list {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-drawer__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .about-drawer__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .75em;
  width: 9px;
  height: 2px;
  background: var(--teal);
}

/* --- 数据资产 --- */
.page-about .about-assets {
  padding-block: clamp(46px, 7vw, 100px);
  border-top: 1px solid var(--line-blue);
  background: linear-gradient(180deg, var(--sea-deep) 0%, var(--sea-night) 100%);
}

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

.page-about .about-asset {
  min-width: 0;
  padding: clamp(18px, 2.4vw, 30px);
  background: var(--sea-night);
}

.page-about .about-asset__num {
  display: block;
  font-family: var(--font-num);
  font-weight: 600;
  font-size: clamp(24px, 3vw, 44px);
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-asset__num--amber { color: var(--amber); }
.page-about .about-asset__num--violet { color: var(--violet); }
.page-about .about-asset__num--moss { color: var(--moss); }

.page-about .about-asset__txt {
  display: block;
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* --- 团队（米白分区） --- */
.page-about .about-team {
  padding-block: clamp(46px, 7vw, 100px) clamp(36px, 5vw, 72px);
  background: var(--ivory);
  color: var(--sea-deep);
}

.page-about .about-team .about-head .ly-section__title { color: var(--sea-deep); }
.page-about .about-team .about-head .ly-section__index { color: var(--teal); }
.page-about .about-team .about-head .ly-lede { color: var(--sea-night); }

.page-about .about-team__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.5vw, 48px);
  align-items: center;
}

.page-about .about-team__ring {
  min-width: 0;
}

.page-about .about-ring {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  margin-inline: auto;
}

.page-about .about-ring__core {
  fill: var(--sea-deep);
}

.page-about .about-ring__coretext {
  fill: var(--cyan);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
}

.page-about .about-ring__coresub {
  fill: var(--text-dim);
  font-family: var(--font-index);
  font-size: 13px;
  letter-spacing: .06em;
}

.page-about .about-ring__arc {
  fill: none;
  stroke-width: 24;
  stroke-linecap: butt;
  stroke-dasharray: 220.5 483.3;
  transition: stroke-width .26s var(--ease);
}

.page-about .about-ring__arc--cyan { stroke: var(--cyan); }
.page-about .about-ring__arc--moss { stroke: var(--moss); }
.page-about .about-ring__arc--amber { stroke: var(--amber); }

.page-about .about-ring:hover .about-ring__arc { stroke-width: 30; }

.page-about .about-team__media {
  margin: 0;
  min-width: 0;
  border: 3px solid var(--sea-deep);
  box-shadow: var(--about-shadow-ink);
  background: var(--sea-deep);
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.92) contrast(1.06);
}

.page-about .about-team__media figcaption {
  padding: 11px 14px;
  font-family: var(--font-index);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--text-dim);
}

.page-about .about-team__roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 2.6vw, 30px);
  margin: clamp(30px, 4vw, 52px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__role {
  min-width: 0;
  padding-top: 18px;
  border-top: 4px solid var(--stone);
}

.page-about .about-team__role--cyan { border-top-color: var(--cyan); }
.page-about .about-team__role--moss { border-top-color: var(--moss); }
.page-about .about-team__role--amber { border-top-color: var(--amber); }

.page-about .about-team__role-num {
  display: block;
  font-family: var(--font-num);
  font-weight: 600;
  font-size: clamp(28px, 3.4vw, 50px);
  line-height: 1;
  color: var(--sea-deep);
  font-variant-numeric: tabular-nums;
}

.page-about .about-team__role-name {
  display: block;
  margin-top: 8px;
  font-family: var(--font-index);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--sea-night);
}

.page-about .about-team__role p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sea-night);
}

.page-about .about-team__note {
  margin: clamp(26px, 3.4vw, 44px) 0 0;
  padding: clamp(16px, 2.2vw, 26px);
  border-left: 4px solid var(--teal);
  background: rgba(31, 167, 155, .08);
  font-size: 15px;
  line-height: 1.8;
  color: var(--sea-night);
}

/* --- 合作生态（延续米白） --- */
.page-about .about-eco {
  padding-block: clamp(36px, 5vw, 76px) clamp(46px, 7vw, 100px);
  background: var(--ivory);
  color: var(--sea-deep);
  border-top: 1px dashed rgba(6, 26, 46, .22);
}

.page-about .about-eco .about-head .ly-section__title { color: var(--sea-deep); }
.page-about .about-eco .about-head .ly-section__index { color: var(--teal); }
.page-about .about-eco .about-head .ly-lede { color: var(--sea-night); }

.page-about .about-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 clamp(30px, 4vw, 52px);
  padding: 0;
  list-style: none;
}

.page-about .about-tag {
  padding: 8px 14px;
  border: 2px solid var(--sea-deep);
  font-family: var(--font-index);
  font-size: 13px;
  line-height: 1.35;
  letter-spacing: .04em;
  color: var(--sea-deep);
  background: transparent;
}

.page-about .about-tag--lg {
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 600;
}

.page-about .about-tag--media {
  border-color: var(--teal);
  background: var(--teal);
  color: var(--ivory);
}

.page-about .about-tag--dist {
  border-color: var(--violet);
  background: var(--violet);
  color: var(--ivory);
}

.page-about .about-tag--org {
  border-color: var(--clay);
  color: var(--clay);
}

.page-about .about-tag--region {
  border-color: var(--sea-deep);
  color: var(--sea-deep);
  background: transparent;
}

.page-about .about-eco__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.4vw, 30px);
}

.page-about .about-eco__item {
  min-width: 0;
  padding: clamp(18px, 2.4vw, 30px);
  border: 3px solid var(--sea-deep);
  box-shadow: var(--about-shadow-ink);
  background: rgba(255, 255, 255, .55);
}

.page-about .about-eco__item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 1.6vw, 22px);
  line-height: 1.3;
  color: var(--sea-deep);
}

.page-about .about-eco__item p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sea-night);
}

/* --- 服务与交付 --- */
.page-about .about-deliver {
  padding-block: clamp(46px, 7vw, 104px);
  border-top: 3px solid var(--line-blue);
  background: var(--sea-deep);
}

.page-about .about-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0 0 clamp(30px, 4vw, 52px);
  padding: 0;
  list-style: none;
  background: var(--line-blue);
  border: 2px solid var(--line-blue);
}

.page-about .about-step {
  min-width: 0;
  padding: clamp(18px, 2.4vw, 30px);
  background: var(--sea-night);
}

.page-about .about-step__k {
  display: block;
  font-family: var(--font-num);
  font-weight: 600;
  font-size: clamp(13px, 1.2vw, 16px);
  letter-spacing: .06em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-step__k--cyan { color: var(--cyan); }
.page-about .about-step__k--amber { color: var(--amber); }
.page-about .about-step__k--violet { color: var(--violet); }
.page-about .about-step__k--moss { color: var(--moss); }

.page-about .about-step p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-deliver__media {
  margin: 0 0 clamp(30px, 4vw, 52px);
  border: 3px solid var(--line-blue);
  box-shadow: var(--about-shadow);
  background: var(--sea-night);
}

.page-about .about-deliver__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(.9) contrast(1.08);
}

.page-about .about-deliver__media figcaption {
  padding: 12px clamp(14px, 2vw, 20px);
  border-top: 2px solid var(--line-blue);
  font-family: var(--font-index);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .05em;
  color: var(--text-dim);
}

.page-about .about-cta {
  padding: clamp(20px, 3vw, 36px);
  border: 2px solid var(--cyan);
  background: linear-gradient(135deg, rgba(60, 242, 222, .10) 0%, rgba(164, 107, 255, .08) 100%);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 70ch;
  font-size: clamp(15px, 1.1vw, 18px);
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.4vw, 28px);
}

/* --- 断点 --- */
@media (min-width: 640px) {
  .page-about .about-assets__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-team__roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-eco__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-timeline__body {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(26px, 3vw, 52px);
  }

  .page-about .about-rail {
    position: sticky;
    top: 128px;
    align-self: start;
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 2px solid var(--line-blue);
  }

  .page-about .about-rail__item {
    position: relative;
    border: 0;
    padding: 12px 0 12px 18px;
  }

  .page-about .about-rail__item::before {
    content: "";
    position: absolute;
    left: -2px;
    top: 50%;
    width: 2px;
    height: 0;
    background: var(--cyan);
    transform: translateY(-50%);
    transition: height .24s var(--ease);
  }

  .page-about .about-rail__item:hover::before,
  .page-about .about-rail__item:focus-visible::before {
    height: 100%;
  }

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

@media (min-width: 1100px) {
  .page-about .about-assets__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-banner {
    margin-bottom: clamp(40px, 4.5vw, 64px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-rail__item::before,
  .page-about .about-ring__arc,
  .page-about .ly-disclosure__item,
  .page-about .about-crumbs .ly-crumbs a {
    transition: none;
  }
}