.page-about {
  --about-line: rgba(138, 118, 153, 0.28);
  --about-rail: 196px;
  background:
    radial-gradient(1000px 560px at 88% -8%, rgba(201, 162, 74, 0.16), transparent 68%),
    radial-gradient(760px 460px at -8% 24%, rgba(79, 224, 208, 0.09), transparent 70%),
    var(--ink-purple);
  color: var(--paper-white);
  overflow-x: clip;
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* 面包屑 */
.page-about .breadcrumb {
  padding-block: 18px 2px;
}
.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.06em;
}
.page-about .breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.page-about .breadcrumb__item + .breadcrumb__item::before {
  content: "／";
  color: var(--mist-violet);
}
.page-about .breadcrumb__link {
  color: var(--mist-violet);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  color: var(--neon-cyan);
  border-bottom-color: var(--neon-cyan);
}
.page-about .breadcrumb__current {
  color: var(--gold);
}

/* 首屏分屏 */
.story-hero {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
  padding-block: clamp(18px, 3vw, 34px) clamp(40px, 6vw, 76px);
}
.story-hero__figure {
  position: relative;
  margin: 0;
}
.story-hero__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 2px 48px 2px 48px;
  box-shadow: var(--shadow-card);
}
.story-hero__figure::after {
  content: "";
  position: absolute;
  right: -12px;
  bottom: -12px;
  width: 44%;
  height: 44%;
  border-right: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
  border-radius: 0 0 40px 0;
  opacity: 0.65;
  pointer-events: none;
}
.story-hero__caption {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist-violet);
}
.story-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}
.story-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.2vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.01em;
}
.story-hero__title em {
  font-style: normal;
  color: var(--gold);
  text-shadow: 0 0 26px rgba(201, 162, 74, 0.32);
}
.story-hero__lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(251, 245, 234, 0.84);
}
.story-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: 30px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--about-line);
  list-style: none;
}
.hero-stats__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.hero-stats__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 3.2vw, 26px);
  color: var(--gold-soft);
  letter-spacing: 0.02em;
}
.hero-stats__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist-violet);
}

/* 分屏长卷主体 */
.story-layout {
  display: grid;
  gap: clamp(20px, 3vw, 44px);
}
.story-rail {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--about-line);
  padding-top: 14px;
}
.rail-vert {
  display: none;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--mist-violet);
  writing-mode: vertical-rl;
}
.rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}
.rail-list__item {
  flex: 0 0 auto;
}
.rail-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  white-space: nowrap;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-cut);
  color: rgba(251, 245, 234, 0.82);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.rail-link__year {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}
.rail-link:hover,
.rail-link:focus-visible {
  color: var(--neon-cyan);
  border-color: var(--neon-cyan);
  background: rgba(79, 224, 208, 0.08);
  outline: none;
}

/* 章节 */
.chapter {
  padding-block: clamp(34px, 5vw, 58px);
  border-top: 1px solid var(--about-line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.chapter:first-child {
  border-top: 0;
  padding-top: 4px;
}
.chapter__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px 14px;
  align-items: start;
  margin-bottom: 18px;
}
.chapter__index {
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold);
}
.chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 36px);
  line-height: 1.3;
}
.chapter__kicker {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--neon-cyan);
}
.chapter p {
  margin: 0 0 14px;
  max-width: 40em;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(251, 245, 234, 0.84);
}
.chapter:target .chapter__title {
  color: var(--gold-soft);
}
.inline-link {
  color: var(--neon-cyan);
  text-decoration: none;
  border-bottom: 1px dotted var(--neon-cyan);
}
.inline-link:hover,
.inline-link:focus-visible {
  color: var(--gold-soft);
  border-bottom-color: var(--gold-soft);
}

/* 初次到访三入口 */
.gates {
  display: grid;
  gap: 14px;
  margin: 20px 0 22px;
  padding: 0;
  list-style: none;
}
.gate {
  padding: 18px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-cut);
  background: linear-gradient(160deg, rgba(42, 23, 56, 0.92), rgba(20, 15, 28, 0.9));
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.gate:hover {
  border-color: rgba(201, 162, 74, 0.62);
  transform: translateY(-2px);
}
.gate__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--rose);
}
.gate__title {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--paper-white);
}
.gate__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(251, 245, 234, 0.76);
}

/* 章节插图 */
.chapter-figure {
  margin: 24px 0;
}
.chapter-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius-cut);
  box-shadow: var(--shadow-card);
}
.chapter-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--mist-violet);
}

/* 年份时间线 */
.story-timeline {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}
.story-timeline__item {
  position: relative;
  padding: 0 0 24px 20px;
  border-left: 1px solid var(--about-line);
}
.story-timeline__item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(201, 162, 74, 0.16);
}
.story-timeline__item--now {
  padding-bottom: 0;
  border-left-color: transparent;
}
.story-timeline__item--now::before {
  background: var(--neon-cyan);
  box-shadow: 0 0 0 4px rgba(79, 224, 208, 0.2);
}
.story-timeline__year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--neon-cyan);
}
.story-timeline__card h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--paper-white);
}
.story-timeline__card p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(251, 245, 234, 0.78);
}

/* 团队条形图 */
.team-bars {
  display: grid;
  gap: 18px;
  margin: 24px 0 8px;
  padding: 0;
  list-style: none;
}
.team-bar__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}
.team-bar__name {
  position: relative;
  display: inline-block;
  font-size: 15.5px;
  color: var(--paper-white);
  cursor: help;
  border-bottom: 1px dotted var(--mist-violet);
}
.team-bar__name:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 3px;
}
.team-bar__tip {
  position: absolute;
  left: 0;
  bottom: calc(100% + 10px);
  z-index: 3;
  width: max-content;
  max-width: 230px;
  padding: 9px 12px;
  border: 1px solid var(--gold);
  border-radius: 10px;
  background: var(--ink-dark);
  color: var(--paper-warm);
  font-size: 12.5px;
  line-height: 1.65;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0.22s;
}
.team-bar__name:hover .team-bar__tip,
.team-bar__name:focus .team-bar__tip,
.team-bar__name:focus-visible .team-bar__tip {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.team-bar__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold-soft);
}
.team-bar__track {
  display: block;
  height: 10px;
  border-radius: 999px;
  background: rgba(138, 118, 153, 0.2);
  overflow: hidden;
}
.team-bar__fill {
  display: block;
  height: 100%;
  border-radius: 999px;
}
.team-bar__fill--edit {
  width: 43%;
  background: linear-gradient(90deg, rgba(201, 162, 74, 0.55), var(--gold-soft));
}
.team-bar__fill--tech {
  width: 32%;
  background: linear-gradient(90deg, rgba(79, 224, 208, 0.42), var(--neon-cyan));
}
.team-bar__fill--care {
  width: 25%;
  background: linear-gradient(90deg, rgba(255, 79, 135, 0.42), var(--rose));
}

/* 三条做法 */
.creed {
  display: grid;
  gap: 14px;
  margin: 22px 0 24px;
  padding: 0;
  list-style: none;
}
.creed__item {
  padding: 18px 18px 18px 20px;
  border-left: 2px solid var(--gold);
  background: rgba(42, 23, 56, 0.5);
  border-radius: 0 var(--radius-cut) var(--radius-cut) 0;
}
.creed__no {
  display: block;
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--gold);
  letter-spacing: 0.2em;
  margin-bottom: 6px;
}
.creed__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--paper-white);
}
.creed__item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(251, 245, 234, 0.78);
}

/* 暖纸档案卡 */
.ledger {
  position: relative;
  margin-top: 6px;
  padding: 22px 22px 20px;
  border-radius: var(--radius-cut);
  background: var(--paper-warm);
  color: var(--ink-dark);
  box-shadow: var(--shadow-card);
}
.ledger::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background-image: repeating-linear-gradient(0deg, rgba(29, 22, 32, 0.045) 0 1px, transparent 1px 4px);
  opacity: 0.9;
  pointer-events: none;
}
.ledger::after {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  background: var(--rose);
  border-radius: 3px;
}
.ledger__title {
  position: relative;
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--ink-dark);
}
.ledger__text {
  position: relative;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(29, 22, 32, 0.82);
}

/* 合作与认可 */
.partner-list {
  display: grid;
  gap: 12px;
  margin: 20px 0 22px;
  padding: 0;
  list-style: none;
}
.partner {
  padding: 16px 18px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-cut);
  background: rgba(20, 15, 28, 0.6);
}
.partner__num {
  font-family: var(--font-mono);
  font-size: 26px;
  color: var(--gold-soft);
}
.partner__label {
  display: block;
  margin-top: 4px;
  font-size: 14.5px;
  color: var(--paper-white);
}
.partner p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist-violet);
}
.honor {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 14px;
  align-items: center;
  margin: 0 0 18px;
  padding: 16px 18px;
  border: 1px dashed rgba(201, 162, 74, 0.5);
  border-radius: var(--radius-cut);
}
.honor__year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--neon-cyan);
}
.honor__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(251, 245, 234, 0.82);
}

/* 结尾去向 */
.story-next {
  margin-top: clamp(36px, 6vw, 68px);
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid rgba(201, 162, 74, 0.45);
  border-radius: 2px 40px 2px 40px;
  background:
    radial-gradient(560px 240px at 100% 0%, rgba(255, 79, 135, 0.16), transparent 70%),
    linear-gradient(150deg, rgba(42, 23, 56, 0.95), rgba(20, 15, 28, 0.98));
}
.story-next__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.3;
}
.story-next__text {
  margin: 12px 0 0;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(251, 245, 234, 0.82);
}
.story-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* 分段增强 */
@media (min-width: 560px) {
  .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 740px) {
  .gates {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .partner-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .creed {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }
}

@media (min-width: 900px) {
  .story-hero {
    grid-template-columns: 5fr 6fr;
  }
  .story-hero__figure {
    order: 0;
  }
}

@media (min-width: 1000px) {
  .story-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    align-items: start;
  }
  .story-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    border-top: 0;
    padding-top: 0;
    flex-direction: row;
    gap: 16px;
  }
  .rail-vert {
    display: block;
    flex: 0 0 auto;
    padding-top: 4px;
  }
  .rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }
  .rail-link {
    display: block;
    padding: 9px 0 9px 16px;
    border: 0;
    border-left: 1px solid var(--about-line);
    border-radius: 0;
    white-space: normal;
    background: transparent;
    line-height: 1.4;
  }
  .rail-link__year {
    display: block;
    font-size: 11px;
    letter-spacing: 0.16em;
    margin-bottom: 2px;
  }
  .rail-link__label {
    font-size: 13.5px;
  }
  .rail-link::before {
    content: "";
    position: absolute;
    left: -3.5px;
    top: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--mist-violet);
    transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
  }
  .rail-link {
    position: relative;
  }
  .rail-link:hover,
  .rail-link:focus-visible {
    background: transparent;
    border-left-color: var(--neon-cyan);
  }
  .rail-link:hover::before,
  .rail-link:focus-visible::before {
    background: var(--neon-cyan);
    box-shadow: 0 0 0 4px rgba(79, 224, 208, 0.18);
  }
  .page-about:has(#chapter-why:target) .rail-link[href="#chapter-why"],
  .page-about:has(#chapter-tour:target) .rail-link[href="#chapter-tour"],
  .page-about:has(#chapter-years:target) .rail-link[href="#chapter-years"],
  .page-about:has(#chapter-team:target) .rail-link[href="#chapter-team"],
  .page-about:has(#chapter-methods:target) .rail-link[href="#chapter-methods"],
  .page-about:has(#chapter-partners:target) .rail-link[href="#chapter-partners"] {
    color: var(--gold);
    border-left-color: var(--gold);
  }
  .page-about:has(#chapter-why:target) .rail-link[href="#chapter-why"]::before,
  .page-about:has(#chapter-tour:target) .rail-link[href="#chapter-tour"]::before,
  .page-about:has(#chapter-years:target) .rail-link[href="#chapter-years"]::before,
  .page-about:has(#chapter-team:target) .rail-link[href="#chapter-team"]::before,
  .page-about:has(#chapter-methods:target) .rail-link[href="#chapter-methods"]::before,
  .page-about:has(#chapter-partners:target) .rail-link[href="#chapter-partners"]::before {
    background: var(--gold);
    box-shadow: 0 0 0 4px rgba(201, 162, 74, 0.18);
  }
  .chapter {
    padding-block: clamp(40px, 5vw, 62px);
  }
}

@media (max-width: 640px) {
  .team-bar__tip {
    position: static;
    display: block;
    width: auto;
    max-width: none;
    margin-top: 8px;
    opacity: 1;
    visibility: visible;
    transform: none;
    border-color: rgba(201, 162, 74, 0.4);
    background: rgba(29, 22, 32, 0.85);
  }
  .team-bar__name {
    border-bottom: 0;
    cursor: auto;
  }
  .story-hero__figure::after {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0.01ms !important;
    transform: none !important;
  }
}
<<<PAGE_CSS_END>>>