/* =============================================
   品牌长卷 /story/ —— 页面专属样式
   作用域：.page-about
   ============================================= */

.page-about {
  --ab-gutter: 58px;
  --ab-body: #3b322b;
  --ab-hair: rgba(25, 19, 16, 0.12);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 6vw, 58px) 0 clamp(42px, 8vw, 88px);
  color: var(--cool-white);
  background:
    radial-gradient(980px 480px at 82% -12%, rgba(216, 166, 60, 0.20), transparent 62%),
    radial-gradient(720px 420px at -6% 104%, rgba(124, 77, 219, 0.18), transparent 66%),
    linear-gradient(180deg, var(--navy) 0%, var(--navy-deep) 100%);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 4px;
  background: linear-gradient(90deg, var(--gold), var(--violet) 52%, var(--coral));
}

.page-about .ab-hero .breadcrumbs {
  margin: 0 0 clamp(20px, 4vw, 34px);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(251, 247, 240, 0.56);
}

.page-about .ab-hero .breadcrumbs a {
  color: var(--gold-light);
  text-decoration: none;
}

.page-about .ab-hero .breadcrumbs a:hover,
.page-about .ab-hero .breadcrumbs a:focus-visible {
  text-decoration: underline;
}

.page-about .ab-hero .eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
}

.page-about .ab-hero__title {
  margin: 0;
  max-width: 20ch;
  color: var(--cool-white);
}

.page-about .ab-hero__lede {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.92;
  color: rgba(251, 247, 240, 0.78);
}

/* ---------- 首屏数据条 ---------- */
.page-about .ab-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(28px, 5vw, 48px) 0 0;
  padding: 1px;
  list-style: none;
  border: 1px solid rgba(216, 166, 60, 0.26);
  border-radius: var(--radius-md);
  background: rgba(216, 166, 60, 0.22);
  overflow: hidden;
}

.page-about .ab-stat {
  padding: 18px 16px;
  background: rgba(7, 19, 36, 0.9);
}

.page-about .ab-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.2rem, 4.2vw, 1.68rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--gold);
}

.page-about .ab-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: rgba(251, 247, 240, 0.6);
}

/* ---------- 时间轴容器 ---------- */
.page-about .ab-timeline {
  position: relative;
  padding: clamp(42px, 8vw, 98px) 0 clamp(48px, 9vw, 110px);
  color: var(--ink);
  background:
    radial-gradient(760px 320px at 92% 4%, rgba(216, 166, 60, 0.12), transparent 68%),
    radial-gradient(620px 300px at 4% 72%, rgba(124, 77, 219, 0.09), transparent 70%),
    var(--cream);
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 28px;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(7, 19, 36, 0.2), transparent);
}

.page-about .tl-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tl-item {
  display: grid;
  grid-template-columns: var(--ab-gutter) minmax(0, 1fr);
  gap: 12px;
  padding-bottom: clamp(42px, 7vw, 82px);
  scroll-margin-top: 110px;
}

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

/* ---------- 左侧年份轨道 ---------- */
.page-about .tl-track {
  position: relative;
  padding-left: 20px;
}

.page-about .tl-track::before {
  content: "";
  position: absolute;
  left: 4.5px;
  top: 26px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(216, 166, 60, 0.42), rgba(85, 112, 140, 0.34));
}

.page-about .tl-item:last-child .tl-track::before {
  display: none;
}

.page-about .tl-dot {
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(216, 166, 60, 0.16);
}

.page-about .tl-year {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}

.page-about .tl-year:hover,
.page-about .tl-year:focus-visible {
  color: var(--coral);
}

.page-about .tl-tag {
  display: block;
  margin-top: 3px;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  line-height: 1.5;
  color: var(--slate);
}

/* ---------- 右侧正文 ---------- */
.page-about .tl-body {
  min-width: 0;
}

.page-about .ab-h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.42rem, 4.4vw, 2.3rem);
  line-height: 1.26;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-about .ab-body {
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--ab-body);
}

.page-about .ab-body p {
  margin: 0 0 14px;
}

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

.page-about .ab-aside {
  max-width: 64ch;
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .ab-aside a {
  color: var(--violet);
  text-decoration: none;
  border-bottom: 1px solid rgba(124, 77, 219, 0.4);
}

.page-about .ab-aside a:hover {
  border-bottom-color: var(--violet);
}

/* ---------- 小数据卡 ---------- */
.page-about .ab-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-meta__cell {
  padding: 12px 14px;
  border: 1px solid var(--ab-hair);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(255, 255, 255, 0.6);
}

.page-about .ab-meta__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.04rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-about .ab-meta__label {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 四步流程 ---------- */
.page-about .ab-flow {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: abstep;
  display: grid;
  gap: 16px;
}

.page-about .ab-flow > li {
  position: relative;
  padding-left: 44px;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--ab-body);
}

.page-about .ab-flow > li::before {
  counter-increment: abstep;
  content: "0" counter(abstep);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--coral);
}

.page-about .ab-flow strong {
  color: var(--ink);
  font-weight: 600;
}

/* ---------- 团队分工卡 ---------- */
.page-about .ab-team {
  display: grid;
  gap: 11px;
  margin-top: 22px;
}

.page-about .ab-member {
  border: 1px solid var(--ab-hair);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.62);
  overflow: hidden;
  transition: border-color 0.3s var(--ease-stage), box-shadow 0.3s var(--ease-stage);
}

.page-about .ab-member[open] {
  border-color: rgba(216, 166, 60, 0.55);
  box-shadow: 0 18px 36px -30px rgba(25, 19, 16, 0.75);
}

.page-about .ab-member__summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

.page-about .ab-member__summary::-webkit-details-marker {
  display: none;
}

.page-about .ab-member__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--slate);
}

.page-about .ab-member[open] .ab-member__summary::after {
  content: "–";
}

.page-about .ab-member__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  font-weight: 700;
  color: var(--violet);
}

.page-about .ab-member__title {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
}

.page-about .ab-member__body {
  padding: 0 18px 17px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ab-body);
}

/* ---------- 赛季六周刻度 ---------- */
.page-about .ab-beat {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 5px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-beat__seg {
  padding: 13px 3px 11px;
  border: 1px solid var(--ab-hair);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.58);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.02em;
  line-height: 1.4;
  color: var(--slate);
}

.page-about .ab-beat__seg::before {
  content: "";
  display: block;
  height: 3px;
  margin: -4px 4px 9px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--gold), var(--violet));
  opacity: 0.3;
}

.page-about .ab-beat__seg:nth-child(2)::before { opacity: 0.44; }
.page-about .ab-beat__seg:nth-child(3)::before { opacity: 0.58; }
.page-about .ab-beat__seg:nth-child(4)::before { opacity: 0.72; }
.page-about .ab-beat__seg:nth-child(5)::before { opacity: 0.88; }

.page-about .ab-beat__seg:nth-child(6)::before {
  opacity: 1;
  background: linear-gradient(90deg, var(--coral), var(--gold));
}

.page-about .ab-beat__seg:nth-child(6) {
  border-color: rgba(240, 101, 74, 0.42);
  background: rgba(240, 101, 74, 0.09);
  color: var(--coral);
}

/* ---------- 深色内嵌面板 ---------- */
.page-about .ab-panel {
  position: relative;
  margin-top: 4px;
  padding: clamp(20px, 4vw, 32px);
  border: 1px solid rgba(216, 166, 60, 0.28);
  border-radius: var(--radius-lg);
  color: var(--cool-white);
  background:
    radial-gradient(560px 260px at 90% -10%, rgba(216, 166, 60, 0.24), transparent 66%),
    radial-gradient(420px 240px at 0% 110%, rgba(124, 77, 219, 0.28), transparent 68%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 100%);
  box-shadow: var(--shadow-soft);
}

.page-about .ab-panel__tag {
  margin: 0 0 12px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .ab-panel__body {
  margin: 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.88;
  color: rgba(251, 247, 240, 0.86);
}

.page-about .ab-panel__foot {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(251, 247, 240, 0.6);
}

/* ---------- 配图 ---------- */
.page-about .ab-figure {
  margin: 24px 0 0;
}

.page-about .ab-figure .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 14 / 9;
}

.page-about .ab-figure--cards .media-frame__img {
  aspect-ratio: 3 / 2;
}

.page-about .ab-figure--beat .media-frame__img {
  aspect-ratio: 12 / 7;
}

/* ---------- 收束区 ---------- */
.page-about .ab-outro {
  position: relative;
  padding: clamp(46px, 9vw, 98px) 0 clamp(42px, 8vw, 90px);
  color: var(--cool-white);
  background:
    radial-gradient(820px 380px at 12% -10%, rgba(124, 77, 219, 0.26), transparent 66%),
    radial-gradient(680px 340px at 88% 110%, rgba(216, 166, 60, 0.2), transparent 68%),
    linear-gradient(180deg, var(--navy-deep), #050d18);
}

.page-about .ab-outro .eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
}

.page-about .ab-outro__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5.4vw, 3rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--cool-white);
}

.page-about .ab-outro__lede {
  max-width: 58ch;
  margin: 18px 0 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(251, 247, 240, 0.78);
}

.page-about .ab-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .ab-outro__links {
  display: grid;
  gap: 10px;
  margin: 32px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid rgba(216, 166, 60, 0.22);
}

.page-about .ab-outro__links a {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--gold-light);
  text-decoration: none;
}

.page-about .ab-outro__links a:hover,
.page-about .ab-outro__links a:focus-visible {
  text-decoration: underline;
}

/* ============= 中等屏 ============= */
@media (min-width: 640px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .ab-outro__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 28px;
  }
}

/* ============= 桌面 ============= */
@media (min-width: 900px) {
  .page-about {
    --ab-gutter: 152px;
  }

  .page-about .tl-item {
    gap: 34px;
  }

  .page-about .tl-track {
    padding-left: 26px;
  }

  .page-about .tl-dot {
    top: 8px;
    width: 12px;
    height: 12px;
  }

  .page-about .tl-track::before {
    left: 5.5px;
  }

  .page-about .tl-year {
    font-size: 17px;
  }

  .page-about .tl-tag {
    font-size: 12.5px;
  }

  .page-about .ab-body {
    font-size: 16.5px;
  }

  .page-about .ab-aside {
    font-size: 14.5px;
  }

  .page-about .ab-hero__title {
    max-width: 16ch;
  }

  .page-about .ab-beat__seg {
    font-size: 12px;
    padding: 16px 6px 13px;
  }
}

/* ============= 降级动效 ============= */
@media (prefers-reduced-motion: reduce) {
  .page-about .ab-member,
  .page-about .tl-year {
    transition: none;
  }
}
<<<END>>>