.page-about {
  --about-rail: 92px;
  --about-card-bg: rgba(30, 38, 51, 0.72);
  --about-hair: rgba(168, 179, 199, 0.16);
  --about-glow: rgba(255, 90, 31, 0.28);
  background: var(--ink);
  color: var(--bone);
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 6vw, 64px) 0 clamp(40px, 7vw, 88px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -22%;
  width: 88vw;
  height: 88vw;
  max-width: 820px;
  max-height: 820px;
  background: radial-gradient(circle at 42% 40%, var(--about-glow), rgba(255, 90, 31, 0) 64%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 62%;
  height: 1px;
  background: linear-gradient(90deg, var(--flame), rgba(255, 90, 31, 0));
}

.page-about .about-hero-inner {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}

.page-about .about-hero-copy .breadcrumbs {
  margin-bottom: 18px;
}

.page-about .about-hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(34px, 7vw, 68px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin: 10px 0 18px;
  background: linear-gradient(118deg, var(--bone) 42%, var(--gold) 78%, var(--flame) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-hero-copy .lede {
  color: var(--mist);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  max-width: 46ch;
  margin: 0 0 26px;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.page-about .about-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-hero-facts div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-hero-facts dt {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-about .about-hero-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
}

.page-about .about-hero-media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  background: linear-gradient(160deg, rgba(255, 90, 31, 0.22), rgba(11, 13, 18, 0.92));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), calc(100% - 40px) 100%, 0 100%);
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

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

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  position: relative;
  padding: clamp(40px, 7vw, 92px) 0;
}

.page-about .chapter-grid {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
}

.page-about .chapter-rail {
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-about .chapter-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold);
  padding-left: 12px;
  border-left: 3px solid var(--flame);
  line-height: 1;
}

.page-about .chapter-line {
  display: none;
}

.page-about .chapter-label {
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.page-about .chapter-body {
  min-width: 0;
}

.page-about .about-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(23px, 3.2vw, 38px);
  line-height: 1.34;
  margin: 0 0 16px;
  color: var(--bone);
}

.page-about .about-title--sm {
  font-size: clamp(21px, 2.6vw, 30px);
}

.page-about .chapter-body > p {
  color: var(--mist);
  line-height: 1.9;
  font-size: 15px;
  margin: 0 0 18px;
  max-width: 66ch;
}

.page-about .about-lead {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(16px, 2vw, 21px) !important;
  color: var(--gold) !important;
  line-height: 1.6 !important;
  letter-spacing: 0.01em;
  margin-bottom: 20px !important;
}

/* ---------- 三点说明 ---------- */
.page-about .about-points {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-hair);
  border-top: 1px solid var(--about-hair);
}

.page-about .about-points li {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  background: var(--ink);
}

.page-about .about-points strong {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--flame);
  letter-spacing: 0.02em;
}

.page-about .about-points span {
  color: var(--mist);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 配图 ---------- */
.page-about .about-figure {
  margin: clamp(22px, 4vw, 38px) 0;
  position: relative;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  background: var(--glass);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--mist);
  letter-spacing: 0.02em;
}

/* ---------- 路径筛选 ---------- */
.page-about .path-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: clamp(20px, 4vw, 34px) 0 22px;
}

.page-about .path-tools .filter-status {
  flex-basis: 100%;
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-about .path-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-about .path-card {
  position: relative;
  padding: 22px 20px 20px;
  background: var(--about-card-bg);
  border: 1px solid var(--about-hair);
  border-left: 3px solid rgba(255, 90, 31, 0.5);
  backdrop-filter: blur(6px);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-about .path-card:hover,
.page-about .path-card:focus-within {
  border-left-color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .path-card-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-style: italic;
  font-size: 18px;
  margin: 0 0 10px;
  color: var(--bone);
  letter-spacing: 0.01em;
}

.page-about .path-card p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .path-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 230, 255, 0.4);
  padding-bottom: 3px;
}

.page-about .path-link:hover,
.page-about .path-link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-about .path-card.is-filtered-out {
  display: none;
}

/* ---------- 数据窄带 ---------- */
.page-about .about-stats {
  position: relative;
  padding: clamp(40px, 6vw, 76px) 0;
  background:
    linear-gradient(180deg, rgba(181, 46, 18, 0.22), rgba(11, 13, 18, 0) 62%),
    var(--ink-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .stats-head {
  max-width: 62ch;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-about .stats-head p {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .stat-band {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .stat-item {
  padding: 22px 18px;
  background: var(--ink);
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: baseline;
  gap: 0 6px;
  transition: background 0.25s ease;
}

.page-about .stat-item:hover,
.page-about .stat-item:focus-within {
  background: #12161f;
}

.page-about .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  letter-spacing: -0.02em;
}

.page-about .stat-item:hover .stat-num,
.page-about .stat-item:focus-within .stat-num {
  color: var(--flame);
}

.page-about .stat-unit {
  font-size: 13px;
  color: var(--mist);
}

.page-about .stat-label {
  grid-column: 1 / -1;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--bone);
}

.page-about .stat-note {
  grid-column: 1 / -1;
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--mist);
  opacity: 0.66;
  transition: opacity 0.25s ease;
}

.page-about .stat-item:hover .stat-note,
.page-about .stat-item:focus-within .stat-note {
  opacity: 1;
}

/* ---------- 运营节奏时间轴 ---------- */
.page-about .ops-track {
  list-style: none;
  margin: 26px 0 0;
  padding: 0 0 0 26px;
  position: relative;
}

.page-about .ops-track::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--flame), rgba(255, 90, 31, 0.12));
}

.page-about .ops-node {
  position: relative;
  padding-bottom: 26px;
}

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

.page-about .ops-node::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--flame);
  box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.16);
}

.page-about .ops-node h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  margin: 0 0 6px;
  color: var(--bone);
  letter-spacing: 0.02em;
}

.page-about .ops-node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 60ch;
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-about .team-card {
  padding: 20px 18px;
  background: var(--glass);
  border-top: 2px solid rgba(57, 230, 255, 0.5);
}

.page-about .team-card h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  margin: 0 0 8px;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-about .team-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-figure--team img {
  border-color: rgba(57, 230, 255, 0.22);
}

.page-about .team-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
}

/* ---------- 合作 ---------- */
.page-about .partner-list {
  margin: 22px 0 0;
  display: grid;
  gap: 1px;
  background: var(--about-hair);
  border-top: 1px solid var(--about-hair);
}

.page-about .partner-list > div {
  padding: 16px 0;
  background: var(--ink);
  display: grid;
  gap: 6px;
}

.page-about .partner-list dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .partner-list dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 62ch;
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  position: relative;
  padding: clamp(44px, 7vw, 88px) 0 clamp(48px, 8vw, 96px);
  background:
    linear-gradient(115deg, rgba(255, 90, 31, 0.2), rgba(11, 13, 18, 0.9) 62%),
    var(--ink-deep);
  border-top: 1px solid var(--line);
}

.page-about .about-cta-inner {
  position: relative;
  max-width: 760px;
}

.page-about .about-cta-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(26px, 4.6vw, 48px);
  line-height: 1.2;
  margin: 0 0 16px;
  color: var(--bone);
  letter-spacing: -0.01em;
}

.page-about .about-cta p {
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
  margin: 0 0 26px;
  max-width: 54ch;
}

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

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero-media {
    aspect-ratio: 16 / 10;
  }

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

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

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

  .page-about .about-points li {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(36px, 5vw, 64px);
  }

  .page-about .about-hero-media {
    aspect-ratio: 4 / 5;
  }

  .page-about .chapter-grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 60px);
  }

  .page-about .chapter-rail {
    position: sticky;
    top: 148px;
    align-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .page-about .chapter-line {
    display: block;
    width: 1px;
    height: 64px;
    background: linear-gradient(180deg, var(--gold), rgba(242, 193, 78, 0));
    margin-left: 14px;
  }

  .page-about .chapter-label {
    writing-mode: vertical-rl;
    letter-spacing: 0.32em;
    margin-left: 8px;
  }

  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .path-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .path-card--lead {
    grid-column: span 2;
  }

  .page-about .stat-band {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .path-card,
  .page-about .stat-item,
  .page-about .stat-note {
    transition: none;
  }

  .page-about .path-card:hover,
  .page-about .path-card:focus-within {
    transform: none;
  }
}
<<<END>>>