.page-about {
  --about-cut: -6deg;
  background: var(--night);
  color: var(--ink);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  margin-bottom: clamp(28px, 5vw, 56px);
}

/* ============ 首屏：窄注释 + 宽标题 ============ */
.page-about .about-hero {
  position: relative;
  padding-top: clamp(44px, 7vw, 84px);
  padding-bottom: clamp(56px, 9vw, 110px);
  background:
    radial-gradient(120% 90% at 78% 0%, rgba(57, 210, 192, .16), transparent 62%),
    radial-gradient(90% 80% at 12% 8%, rgba(245, 197, 66, .13), transparent 60%),
    var(--night);
  border-bottom: 1px solid var(--hairline);
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
}

.page-about .about-rule {
  display: block;
  width: 46px;
  height: 3px;
  background: var(--gold);
  margin-bottom: 16px;
}

.page-about .about-kicker {
  font-size: var(--fs-xs);
  letter-spacing: .16em;
  color: var(--gold);
  margin: 0 0 10px;
}

.page-about .about-note-text {
  margin: 0;
  font-size: var(--fs-s);
  line-height: 1.85;
  color: var(--ink-dim);
  max-width: 22ch;
}

.page-about .about-hero-main h1 {
  font-size: var(--fs-xxl);
  letter-spacing: -.02em;
  line-height: 1.06;
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-weight: 800;
}

.page-about .about-hero-main .lede {
  max-width: 58ch;
  color: var(--ink-dim);
  font-size: var(--fs-base);
  line-height: 1.85;
}

.page-about .about-hero-stats {
  list-style: none;
  margin: clamp(32px, 5vw, 52px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  grid-template-columns: 1fr;
  background: var(--hairline-soft);
  border: 1px solid var(--hairline);
}

.page-about .about-hero-stats li {
  background: var(--panel-soft);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-stat-num {
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: var(--gold);
  letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.page-about .about-stat-label {
  font-size: var(--fs-xs);
  letter-spacing: .08em;
  color: var(--ink-quiet);
}

/* ============ 通用左右分栏 ============ */
.page-about .about-row {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

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

.page-about .about-rail-label {
  margin: 0 0 8px;
  font-size: var(--fs-xs);
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-about .about-rail-year {
  margin: 0 0 10px;
  font-size: var(--fs-l);
  color: var(--ink);
  letter-spacing: .02em;
}

.page-about .about-rail-text {
  margin: 0;
  font-size: var(--fs-s);
  line-height: 1.85;
  color: var(--ink-quiet);
}

.page-about .about-body .section-title {
  margin: 8px 0 clamp(18px, 3vw, 26px);
}

.page-about .about-body .prose p {
  color: var(--ink-dim);
}

.page-about .about-body .prose p:first-child {
  color: var(--ink);
  font-size: var(--fs-m);
  line-height: 1.7;
}

/* ============ 起点章节 ============ */
.page-about .about-origin {
  padding-top: clamp(56px, 8vw, 104px);
  padding-bottom: clamp(48px, 7vw, 88px);
}

/* ============ 三条标准 ============ */
.page-about .about-standards {
  padding-top: clamp(48px, 7vw, 88px);
  padding-bottom: clamp(56px, 8vw, 100px);
  background:
    linear-gradient(180deg, rgba(18, 51, 42, .0), rgba(18, 51, 42, .85) 30%, rgba(18, 51, 42, .85) 70%, rgba(18, 51, 42, 0));
}

.page-about .about-standard-figure {
  margin: clamp(26px, 4vw, 40px) 0 0;
}

.page-about .about-standard-figure .figure-frame {
  border: 1px solid var(--hairline);
  background: var(--panel);
}

.page-about .about-standard-list {
  list-style: none;
  margin: clamp(32px, 5vw, 48px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--hairline);
}

.page-about .about-standard-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 6px 16px;
  padding: clamp(20px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-about .about-standard-index {
  grid-row: 1 / span 2;
  font-size: var(--fs-s);
  color: var(--gold);
  letter-spacing: .06em;
  padding-top: 4px;
}

.page-about .about-standard-item h3 {
  margin: 0;
  font-size: var(--fs-m);
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.4;
}

.page-about .about-standard-item p {
  margin: 0;
  font-size: var(--fs-s);
  line-height: 1.85;
  color: var(--ink-dim);
}

.page-about .about-standard-foot {
  margin: clamp(24px, 4vw, 34px) 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--cyan);
  font-size: var(--fs-s);
  line-height: 1.85;
  color: var(--ink-quiet);
}

/* ============ 团队 ============ */
.page-about .about-team {
  padding-top: clamp(56px, 8vw, 96px);
  padding-bottom: clamp(56px, 8vw, 100px);
  background: var(--panel);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.page-about .about-team-figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

.page-about .about-team-figure .figure-frame {
  border: 1px solid var(--hairline);
  background: var(--deep);
}

.page-about .about-roster {
  margin-top: clamp(32px, 5vw, 48px);
  border-top: 1px solid var(--edge);
}

.page-about .about-roster-head {
  display: none;
}

.page-about .about-roster-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: clamp(20px, 3vw, 26px) 0;
  border-bottom: 1px solid var(--hairline-soft);
  transition: background-color .28s ease, box-shadow .28s ease;
}

.page-about .about-roster-post {
  font-size: var(--fs-m);
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-about .about-roster-count {
  font-size: var(--fs-s);
  color: var(--gold);
  letter-spacing: .06em;
}

.page-about .about-roster-duty {
  font-size: var(--fs-s);
  line-height: 1.85;
  color: var(--ink-dim);
}

.page-about .about-team-foot {
  margin: clamp(24px, 4vw, 32px) 0 0;
  font-size: var(--fs-s);
  color: var(--ink-quiet);
  line-height: 1.85;
}

.page-about .about-team-foot a,
.page-about .about-scale-foot a,
.page-about .about-timeline-foot a,
.page-about .about-partners .prose a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 210, 192, .45);
}

.page-about .about-team-foot a:hover,
.page-about .about-scale-foot a:hover,
.page-about .about-timeline-foot a:hover,
.page-about .about-partners .prose a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ============ 时间轴 ============ */
.page-about .about-timeline-section {
  position: relative;
  padding-top: clamp(64px, 9vw, 118px);
  padding-bottom: clamp(56px, 8vw, 104px);
  border-bottom: 1px solid var(--hairline);
}

.page-about .about-timeline-backdrop {
  position: absolute;
  inset: 0;
  margin: 0;
  z-index: 0;
  opacity: .22;
  overflow: hidden;
  pointer-events: none;
}

.page-about .about-timeline-backdrop .figure-frame {
  height: 100%;
  border: 0;
  background: none;
}

.page-about .about-timeline-backdrop img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-timeline-section::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, rgba(11, 59, 46, .86), rgba(8, 37, 28, .74) 45%, rgba(11, 59, 46, .92));
  pointer-events: none;
}

.page-about .about-timeline-section > .container {
  position: relative;
  z-index: 1;
}

.page-about .about-timeline {
  list-style: none;
  margin: clamp(34px, 5vw, 52px) 0 0;
  padding: 0 0 0 22px;
  position: relative;
  counter-reset: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(57, 210, 192, .5));
}

.page-about .about-tl-item {
  position: relative;
  padding: 0 0 clamp(28px, 4vw, 40px) 4px;
}

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

.page-about .about-tl-tick {
  position: absolute;
  left: -22px;
  top: 7px;
  width: 12px;
  height: 12px;
  background: var(--gold);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px rgba(11, 59, 46, .9);
}

.page-about .about-tl-season {
  display: inline-block;
  font-size: var(--fs-xs);
  letter-spacing: .14em;
  color: var(--gold-soft);
  border: 1px solid rgba(245, 197, 66, .5);
  padding: 3px 9px;
  transform: rotate(-6deg);
  transform-origin: left center;
  margin-bottom: 12px;
  background: rgba(8, 37, 28, .7);
}

.page-about .about-tl-title {
  margin: 0 0 8px;
  font-size: var(--fs-m);
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.4;
}

.page-about .about-tl-text {
  margin: 0;
  max-width: 62ch;
  font-size: var(--fs-s);
  line-height: 1.85;
  color: var(--ink-dim);
}

.page-about .about-timeline-foot {
  margin: clamp(26px, 4vw, 36px) 0 0;
  font-size: var(--fs-s);
  line-height: 1.85;
  color: var(--ink-quiet);
}

/* ============ 规模（浅色章节） ============ */
.page-about .about-scale {
  padding-top: clamp(56px, 8vw, 100px);
  padding-bottom: clamp(56px, 8vw, 100px);
}

.page-about .about-rail--paper {
  border-top-color: rgba(11, 59, 46, .3);
}

.page-about .about-scale-grid {
  margin: clamp(30px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(11, 59, 46, .18);
  border: 1px solid rgba(11, 59, 46, .18);
}

.page-about .about-scale-cell {
  background: rgba(255, 255, 255, .55);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-scale-label {
  font-size: var(--fs-xs);
  letter-spacing: .08em;
  color: rgba(11, 59, 46, .68);
}

.page-about .about-scale-value {
  font-size: clamp(1.25rem, 3.2vw, 1.6rem);
  color: var(--night);
  letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
}

.page-about .about-scale-foot {
  margin: clamp(24px, 4vw, 32px) 0 0;
  font-size: var(--fs-s);
  line-height: 1.85;
  color: rgba(11, 59, 46, .72);
}

/* ============ 合作与认可 ============ */
.page-about .about-partners {
  padding-top: clamp(56px, 8vw, 96px);
  padding-bottom: clamp(56px, 8vw, 100px);
}

.page-about .about-partners .prose p {
  color: var(--ink-dim);
}

.page-about .about-award {
  margin-top: clamp(28px, 4vw, 40px);
  padding: 20px 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-left: 4px solid var(--gold);
}

.page-about .about-award-tag {
  transform: rotate(var(--about-cut));
  transform-origin: left center;
}

.page-about .about-award-text {
  margin: 0;
  font-size: var(--fs-s);
  letter-spacing: .04em;
  color: var(--ink);
}

/* ============ 结尾 CTA ============ */
.page-about .about-cta {
  padding-top: clamp(48px, 7vw, 84px);
  padding-bottom: clamp(56px, 8vw, 96px);
  border-top: 1px solid var(--hairline);
  background:
    radial-gradient(80% 120% at 88% 100%, rgba(245, 197, 66, .16), transparent 62%),
    var(--deep);
}

.page-about .about-cta-inner {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
}

.page-about .about-cta-text .section-title {
  margin: 0 0 14px;
}

.page-about .about-cta-text p {
  margin: 0;
  max-width: 52ch;
  font-size: var(--fs-s);
  line-height: 1.85;
  color: var(--ink-dim);
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============ 交互增强 ============ */
.page-about .about-roster-row:hover,
.page-about .about-roster-row:focus-within {
  background: rgba(57, 210, 192, .07);
  box-shadow: inset 3px 0 0 var(--gold);
}

.page-about .about-tl-item {
  transition: opacity .3s ease;
}

@media (hover: hover) {
  .page-about .about-timeline .about-tl-item:hover .about-tl-tick {
    background: var(--cyan);
  }
}

/* ============ 平板以上 ============ */
@media (min-width: 720px) {
  .page-about .about-hero-stats {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .page-about .about-roster-head {
    display: grid;
    grid-template-columns: 1.1fr .7fr 2.6fr;
    gap: 18px;
    padding: 12px 0;
    border-bottom: 1px solid var(--edge);
  }

  .page-about .about-roster-head span {
    font-size: var(--fs-xs);
    letter-spacing: .14em;
    color: var(--ink-quiet);
    text-transform: uppercase;
  }

  .page-about .about-roster-row {
    grid-template-columns: 1.1fr .7fr 2.6fr;
    gap: 18px;
    align-items: start;
  }

  .page-about .about-roster-post,
  .page-about .about-roster-count {
    padding-top: 2px;
  }

  .page-about .about-cta-inner {
    grid-template-columns: 1.6fr .9fr;
    align-items: center;
  }

  .page-about .about-cta-actions {
    justify-content: flex-end;
  }
}

/* ============ 桌面：杂志式窄栏 + 宽栏 ============ */
@media (min-width: 1000px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(150px, 2fr) minmax(0, 6.5fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .about-row {
    grid-template-columns: minmax(150px, 2fr) minmax(0, 6.5fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .about-row--flip {
    grid-template-columns: minmax(0, 6.5fr) minmax(150px, 2fr);
  }

  .page-about .about-rail {
    padding-top: 18px;
  }

  .page-about .about-timeline {
    padding-left: 30px;
  }

  .page-about .about-timeline::before {
    left: 7px;
  }

  .page-about .about-tl-tick {
    left: -30px;
  }

  .page-about .about-tl-item {
    padding-bottom: clamp(32px, 3.4vw, 46px);
  }

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

  .page-about .about-standard-item {
    grid-template-columns: 56px 1fr;
    gap: 8px 22px;
  }

  .page-about .about-standard-item {
    padding-left: 8px;
  }
}

/* ============ 宽屏留白 ============ */
@media (min-width: 1320px) {
  .page-about .about-hero-grid,
  .page-about .about-row {
    grid-template-columns: minmax(180px, 2fr) minmax(0, 7fr);
  }

  .page-about .about-row--flip {
    grid-template-columns: minmax(0, 7fr) minmax(180px, 2fr);
  }
}

/* ============ 降低动效 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl-item,
  .page-about .about-roster-row {
    transition: none;
  }
}