.page-about {
  --about-lead: rgba(245, 240, 230, .8);
  --about-body: rgba(245, 240, 230, .78);
  display: block;
  color: var(--paper);
  font-family: var(--font-body);
  background:
    radial-gradient(1100px 520px at 6% -8%, rgba(242, 181, 68, .1), transparent 62%),
    radial-gradient(900px 520px at 98% 26%, rgba(53, 214, 192, .05), transparent 66%);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mist);
}
.page-about .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(154, 168, 163, .5);
}
.page-about .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}
.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--gold-soft);
  border-bottom-color: var(--line-gold);
}
.page-about .breadcrumb [aria-current="page"] {
  color: rgba(245, 240, 230, .72);
}

/* ---------- 通用小注释 ---------- */
.page-about .kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--gold);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(42px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 2%, var(--gold) 22%, var(--pulse) 56%, transparent 96%);
  opacity: .7;
  animation: about-breathe 7s var(--ease) infinite;
}
@keyframes about-breathe {
  0%, 100% { opacity: .5; }
  50% { opacity: 1; }
}

.page-about .hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
  margin-top: clamp(26px, 4.4vw, 50px);
}
@media (min-width: 900px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 74px);
  }
}

.page-about .hero-copy h1 {
  margin: .3em 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 8.4vw, 86px);
  line-height: 1.03;
  letter-spacing: -.022em;
  color: var(--paper);
}

.page-about .hero-lede {
  margin: clamp(16px, 2.2vw, 26px) 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--about-lead);
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .hero-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-gold);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--stand);
  box-shadow: 0 34px 70px -36px rgba(6, 18, 14, .95);
}
.page-about .hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(.92) contrast(1.05);
}
@media (min-width: 900px) {
  .page-about .hero-figure { transform: translateY(-10px); }
}

/* ---------- 首屏数字条 ---------- */
.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(34px, 5vw, 58px);
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
@media (min-width: 760px) {
  .page-about .hero-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.page-about .stat {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: clamp(15px, 2vw, 22px) clamp(14px, 2vw, 20px);
  background: var(--hall);
}
.page-about .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(23px, 3.2vw, 33px);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--gold);
}
.page-about .stat-num em {
  font-style: normal;
  font-size: .5em;
  margin-left: 2px;
  color: var(--mist);
}
.page-about .stat-label {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-section {
  padding: clamp(46px, 7vw, 90px) 0;
}
.page-about .about-section + .about-section {
  border-top: 1px solid var(--line-soft);
}
.page-about .section-head h2,
.page-about .origin-head h2,
.page-about .crew-copy h2,
.page-about .next-panel h2 {
  margin: .26em 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.16;
  letter-spacing: -.018em;
  color: var(--paper);
}
.page-about .section-head .lead {
  margin: clamp(12px, 1.6vw, 18px) 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.4vw, 16.5px);
  line-height: 1.85;
  color: var(--about-body);
}

/* ---------- 起点叙事 ---------- */
.page-about .origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
}
@media (min-width: 880px) {
  .page-about .origin-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 84px);
  }
}
.page-about .prose p {
  margin: 0 0 1.15em;
  font-size: clamp(15px, 1.4vw, 16.5px);
  line-height: 1.88;
  color: var(--about-body);
}
.page-about .prose p:last-child { margin-bottom: 0; }

/* ---------- 三条理念 ---------- */
.page-about .creed-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(26px, 4vw, 42px);
}
@media (min-width: 840px) {
  .page-about .creed-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.page-about .creed-item {
  position: relative;
  display: flex;
  gap: clamp(14px, 2vw, 20px);
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(30, 62, 52, .88), rgba(18, 43, 36, .88));
  outline: none;
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}
.page-about .creed-item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: var(--gold);
  transform: scaleY(.18);
  transform-origin: top;
  opacity: .3;
  transition: transform .26s var(--ease), opacity .26s var(--ease);
}
.page-about .creed-item:hover,
.page-about .creed-item:focus-visible {
  border-color: var(--line-gold);
  transform: translateY(-3px);
}
.page-about .creed-item:hover::after,
.page-about .creed-item:focus-visible::after {
  transform: scaleY(1);
  opacity: 1;
}
.page-about .creed-tag {
  flex: 0 0 auto;
  padding-left: 6px;
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(14px, 1.4vw, 16px);
  letter-spacing: .22em;
  color: var(--gold);
}
.page-about .creed-body h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-about .creed-body p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--about-body);
}

/* ---------- 时间线 ---------- */
.page-about .tl-scroller {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 6px clamp(18px, 4vw, 40px) 18px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}
@media (min-width: 1360px) {
  .page-about .tl-scroller {
    padding-left: calc((100vw - var(--wrap)) / 2 + 40px);
    padding-right: calc((100vw - var(--wrap)) / 2 + 40px);
  }
}
.page-about .tl {
  display: flex;
  gap: clamp(16px, 2.4vw, 28px);
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: max-content;
}
.page-about .tl-item {
  position: relative;
  flex: 0 0 clamp(232px, 26vw, 296px);
  scroll-snap-align: start;
  padding: 28px 0 0;
  border-top: 2px solid var(--line);
  outline: none;
  transition: border-color .18s var(--ease);
}
.page-about .tl-node {
  position: absolute;
  top: -7px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--gold);
  transition: background .18s var(--ease), box-shadow .18s var(--ease);
}
.page-about .tl-item:hover,
.page-about .tl-item:focus-within { border-top-color: var(--gold); }
.page-about .tl-item:hover .tl-node,
.page-about .tl-item:focus-within .tl-node {
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(242, 181, 68, .14);
}
.page-about .tl-year {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--cyan);
}
.page-about .tl-item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 1.6vw, 18.5px);
  line-height: 1.42;
  color: var(--paper);
}
.page-about .tl-item > p {
  margin: 9px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-body);
}
.page-about .tl-more {
  display: block;
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
  transition: max-height .26s var(--ease), opacity .26s var(--ease), margin-top .26s var(--ease);
}
.page-about .tl-item:hover .tl-more,
.page-about .tl-item:focus-within .tl-more {
  max-height: 160px;
  margin-top: 11px;
  opacity: 1;
}

/* ---------- 值班团队 ---------- */
.page-about .crew-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 50px);
  align-items: start;
}
@media (min-width: 900px) {
  .page-about .crew-grid { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
}
.page-about .crew-copy h2 { margin-top: .24em; }
.page-about .prose-p {
  margin: clamp(14px, 2vw, 20px) 0 0;
  font-size: clamp(15px, 1.4vw, 16.5px);
  line-height: 1.88;
  color: var(--about-body);
}
.page-about .prose-p--tight { margin-top: clamp(12px, 1.6vw, 16px); }

.page-about .shift-board {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 4px clamp(4px, 1vw, 8px);
  list-style: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--stand);
}
.page-about .shift-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: clamp(10px, 2vw, 18px);
  align-items: center;
  padding: clamp(12px, 1.6vw, 16px) clamp(12px, 1.6vw, 18px);
  border-bottom: 1px dashed var(--line);
}
.page-about .shift-row:last-child { border-bottom: 0; }
.page-about .shift-time {
  min-width: 42px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gold);
}
.page-about .shift-text {
  font-size: 14px;
  line-height: 1.72;
  color: rgba(245, 240, 230, .8);
}
.page-about .shift-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 214, 192, .12);
}

.page-about .crew-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--stand);
}
@media (min-width: 900px) {
  .page-about .crew-figure { margin-top: clamp(28px, 4.5vw, 62px); }
}
.page-about .crew-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(.92);
}

/* ---------- 合作生态 ---------- */
.page-about .partner-scroller {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 6px clamp(18px, 4vw, 40px) 20px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}
@media (min-width: 1360px) {
  .page-about .partner-scroller {
    padding-left: calc((100vw - var(--wrap)) / 2 + 40px);
    padding-right: calc((100vw - var(--wrap)) / 2 + 40px);
  }
}
.page-about .partner-track {
  display: flex;
  gap: clamp(14px, 2vw, 22px);
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: max-content;
}
.page-about .partner-card {
  flex: 0 0 clamp(238px, 30vw, 316px);
  scroll-snap-align: start;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(30, 62, 52, .94), rgba(12, 31, 26, .94));
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}
.page-about .partner-card:hover {
  border-color: var(--line-gold);
  transform: translateY(-3px);
}
.page-about .pc-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.2vw, 24px);
  letter-spacing: .02em;
  color: var(--gold);
}
.page-about .pc-label {
  display: block;
  margin-top: 7px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}
.page-about .partner-card p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--about-body);
}

.page-about .partner-figure {
  margin: clamp(24px, 3.6vw, 44px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--deep);
}
.page-about .partner-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 5;
  object-fit: cover;
  opacity: .92;
}
@media (min-width: 900px) {
  .page-about .partner-figure img { aspect-ratio: 21 / 9; }
}

/* ---------- 收尾引导 ---------- */
.page-about .about-next {
  padding: clamp(48px, 7vw, 94px) 0 clamp(56px, 8vw, 112px);
}
.page-about .next-panel {
  position: relative;
  padding: clamp(28px, 4vw, 54px);
  border: 1px solid var(--line-gold);
  border-radius: var(--radius);
  background:
    radial-gradient(620px 280px at 6% 0%, rgba(255, 90, 43, .14), transparent 70%),
    linear-gradient(158deg, rgba(30, 62, 52, .92), rgba(12, 31, 26, .96));
  overflow: hidden;
}
.page-about .next-glow {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--pulse), var(--gold) 46%, transparent 92%);
  opacity: .85;
}
.page-about .next-text {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.4vw, 16.5px);
  line-height: 1.86;
  color: var(--about-body);
}
.page-about .next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero::before { animation: none; opacity: .8; }
  .page-about .creed-item,
  .page-about .creed-item::after,
  .page-about .tl-item,
  .page-about .tl-node,
  .page-about .tl-more,
  .page-about .partner-card {
    transition: none;
  }
  .page-about .creed-item:hover,
  .page-about .creed-item:focus-visible,
  .page-about .partner-card:hover { transform: none; }
}
</main>