.page-about {
  --ab-line: rgba(59, 42, 34, .16);
  --ab-line-soft: rgba(59, 42, 34, .1);
  --ab-rail: 200px;
  background: var(--ns-cream);
  color: var(--ns-ink);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--ns-navy-deep);
  color: var(--ns-cream);
  padding: clamp(22px, 3.6vw, 36px) 0 clamp(38px, 5.6vw, 68px);
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -52%;
  width: min(620px, 78vw);
  height: min(620px, 78vw);
  border-radius: 50%;
  background: radial-gradient(circle at 34% 34%, rgba(255, 106, 26, .2), rgba(107, 61, 245, .12) 45%, transparent 68%);
  pointer-events: none;
}
.page-about .about-hero__ghost {
  position: absolute;
  top: -.06em;
  right: -.04em;
  font-family: var(--ns-font-data);
  font-size: clamp(180px, 30vw, 420px);
  font-weight: 700;
  line-height: .82;
  letter-spacing: -.06em;
  color: rgba(244, 237, 226, .045);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}
.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}
.page-about .about-hero .ns-breadcrumb {
  margin: 0 0 clamp(18px, 2.4vw, 28px);
}
.page-about .about-hero .ns-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: rgba(244, 237, 226, .62);
}
.page-about .about-hero .ns-breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(244, 237, 226, .34);
}
.page-about .about-hero .ns-breadcrumb a {
  color: rgba(244, 237, 226, .78);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 26, .5);
}
.page-about .about-hero .ns-breadcrumb a:hover {
  color: var(--ns-orange-2);
}
.page-about .about-hero__eyebrow {
  color: var(--ns-orange-2);
  letter-spacing: .16em;
  font-size: 12px;
  text-transform: uppercase;
  margin: 0;
}
.page-about .about-hero__title {
  margin: clamp(12px, 1.8vw, 20px) 0 0;
  font-family: var(--ns-font-title);
  font-weight: 900;
  font-size: clamp(34px, 6.4vw, 76px);
  line-height: 1.06;
  letter-spacing: -.025em;
  max-width: 17ch;
}
.page-about .about-hero__lede {
  margin: clamp(16px, 2.2vw, 24px) 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.5vw, 17.5px);
  line-height: 1.78;
  color: rgba(244, 237, 226, .82);
}
.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: clamp(18px, 2.4vw, 26px) 0 0;
  border-top: 1px solid rgba(244, 237, 226, .16);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 12px;
}
.page-about .about-hero__stats .ns-stat__value {
  display: block;
  font-family: var(--ns-font-data);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1;
  color: var(--ns-orange-2);
}
.page-about .about-hero__stats li:nth-child(2) .ns-stat__value { color: var(--ns-lime); }
.page-about .about-hero__stats li:nth-child(4) .ns-stat__value { color: var(--ns-lime); }
.page-about .about-hero__stats .ns-stat__label {
  display: block;
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.5;
  color: rgba(244, 237, 226, .7);
}
@media (min-width: 760px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }
  .page-about .about-hero__stats li + li {
    padding-left: clamp(14px, 2vw, 26px);
    border-left: 1px solid rgba(244, 237, 226, .14);
  }
}

/* ---------- 外壳与左侧索引 ---------- */
.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 52px);
  padding-top: clamp(34px, 4.6vw, 64px);
  padding-bottom: clamp(46px, 6.4vw, 92px);
}
@media (min-width: 1024px) {
  .page-about .about-shell {
    grid-template-columns: var(--ab-rail) minmax(0, 1fr);
    align-items: start;
  }
}
.page-about .about-rail {
  display: none;
}
@media (min-width: 1024px) {
  .page-about .about-rail {
    display: block;
    position: sticky;
    top: 104px;
  }
}
.page-about .about-rail__label {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ns-navy);
  font-family: var(--ns-font-data);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ns-violet);
}
.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-rail__list li + li {
  margin-top: 3px;
}
.page-about .about-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px;
  border-left: 2px solid var(--ns-edge);
  color: var(--ns-ink);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  transition: border-color .2s ease, background-color .2s ease, color .2s ease;
}
.page-about .about-rail__link:hover {
  background: var(--ns-paper);
}
.page-about .about-rail__link.is-active {
  border-left-color: var(--ns-orange);
  background: var(--ns-paper);
  color: var(--ns-navy);
  font-weight: 700;
}
.page-about .about-rail__num {
  font-family: var(--ns-font-data);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ns-orange);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-body > * + * {
  margin-top: clamp(40px, 5.6vw, 82px);
}
.page-about .about-sec {
  scroll-margin-top: 104px;
}
.page-about .about-sec + .about-sec {
  padding-top: clamp(36px, 5vw, 72px);
  border-top: 1px solid var(--ab-line-soft);
}
.page-about .about-body .about-sec:first-child {
  margin-top: 0;
}
.page-about .ns-chapter {
  margin-bottom: clamp(20px, 2.6vw, 32px);
}
.page-about .about-sec__body > * + * {
  margin-top: clamp(20px, 2.6vw, 30px);
}

/* ---------- 通用正文 ---------- */
.page-about .about-prose {
  margin: 0;
  font-size: clamp(15.5px, 1.05vw, 17px);
  line-height: 1.8;
}
.page-about .about-prose + .about-prose {
  margin-top: 14px;
}
.page-about .about-sub {
  margin: 0 0 14px;
  font-family: var(--ns-font-title);
  font-weight: 700;
  font-size: clamp(17px, 1.5vw, 20px);
  letter-spacing: -.01em;
}

/* ---------- 01 起点 ---------- */
.page-about .about-cols {
  display: grid;
  gap: clamp(20px, 2.6vw, 32px);
}
@media (min-width: 900px) {
  .page-about .about-cols {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .6fr);
    gap: clamp(28px, 3.4vw, 52px);
  }
}
.page-about .about-facts {
  align-self: start;
  padding: 20px 22px 22px;
  background: var(--ns-paper);
  border: 1px solid var(--ns-ink);
  box-shadow: 7px 7px 0 rgba(255, 106, 26, .26);
}
.page-about .about-facts__title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ab-line);
  font-family: var(--ns-font-data);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ns-violet);
}
.page-about .about-facts__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-facts__list li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 8px;
  padding: 9px 0;
  font-size: 14.5px;
  line-height: 1.6;
}
.page-about .about-facts__list li + li {
  border-top: 1px dotted var(--ns-edge);
}
.page-about .about-facts__k {
  font-family: var(--ns-font-data);
  font-size: 12px;
  font-weight: 700;
  color: var(--ns-orange);
  padding-top: 2px;
}
.page-about .about-quote {
  margin: 0;
  padding: clamp(22px, 3vw, 36px) clamp(20px, 3.4vw, 46px);
  background: var(--ns-navy);
  color: var(--ns-cream);
  clip-path: polygon(0 0, 100% 4%, 100% 100%, 0 96%);
}
.page-about .about-quote p {
  margin: 0;
  font-family: var(--ns-font-title);
  font-weight: 700;
  font-size: clamp(18px, 2.3vw, 27px);
  line-height: 1.5;
  letter-spacing: -.015em;
  max-width: 34ch;
}

/* ---------- 02 团队 ---------- */
.page-about .about-sec__body--split {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}
@media (min-width: 900px) {
  .page-about .about-sec__body--split {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: start;
  }
}
.page-about .about-stack > * + * {
  margin-top: clamp(18px, 2.4vw, 28px);
}
.page-about .about-roles {
  display: grid;
  gap: 10px;
}
.page-about .about-role {
  background: var(--ns-paper);
  border: 1px solid var(--ns-ink);
  padding: 0;
}
.page-about .about-role__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  position: relative;
}
.page-about .about-role__head::-webkit-details-marker {
  display: none;
}
.page-about .about-role__head::after {
  content: "+";
  margin-left: auto;
  font-family: var(--ns-font-data);
  font-size: 18px;
  font-weight: 700;
  color: var(--ns-orange);
  line-height: 1;
}
.page-about .about-role[open] .about-role__head::after {
  content: "\2212";
}
.page-about .about-role__head:hover {
  background: var(--ns-cream-2);
}
.page-about .about-role__num {
  font-family: var(--ns-font-data);
  font-weight: 700;
  font-size: 22px;
  color: var(--ns-navy);
  line-height: 1;
}
.page-about .about-role__name {
  font-family: var(--ns-font-title);
  font-weight: 700;
  font-size: clamp(16px, 1.4vw, 18px);
}
.page-about .about-role__unit {
  font-size: 12px;
  color: var(--ns-violet);
  font-family: var(--ns-font-data);
}
.page-about .about-role__body {
  margin: 0;
  padding: 0 16px 16px;
  border-top: 1px dashed var(--ns-edge);
  padding-top: 14px;
  font-size: 14.8px;
  line-height: 1.75;
}

/* ---------- 通用图框 ---------- */
.page-about .about-figure {
  position: relative;
  margin: 0;
  padding: 8px;
  background: var(--ns-navy);
  border: 1px solid var(--ns-ink);
  box-shadow: 8px 8px 0 rgba(11, 27, 58, .14);
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-figure figcaption {
  padding: 11px 6px 5px;
  font-size: 12.8px;
  line-height: 1.6;
  color: rgba(244, 237, 226, .74);
}
.page-about .about-figure--wide {
  padding: 0;
  box-shadow: 10px 10px 0 rgba(107, 61, 245, .18);
}
.page-about .about-figure--wide img {
  aspect-ratio: 1600 / 700;
}
.page-about .about-figure--wide figcaption {
  padding: 12px 16px 14px;
}

/* ---------- 03 分析师 ---------- */
.page-about .about-expert-grid {
  gap: clamp(14px, 2vw, 24px);
}
.page-about .about-expert {
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--ns-paper);
  border: 1px solid var(--ns-ink);
  box-shadow: 7px 7px 0 rgba(107, 61, 245, .18);
}
.page-about .about-expert h3 {
  margin: 10px 0 10px;
  font-family: var(--ns-font-title);
  font-weight: 700;
  font-size: clamp(19px, 2.1vw, 25px);
  letter-spacing: -.015em;
}
.page-about .about-expert p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
}
.page-about .about-note-line {
  margin: 0;
  padding: 14px 0 14px 18px;
  border-left: 3px solid var(--ns-lime);
  background: linear-gradient(90deg, rgba(182, 242, 74, .12), transparent 70%);
  font-size: 15px;
  line-height: 1.78;
  color: rgba(59, 42, 34, .84);
}

/* ---------- 04 节奏时间轴 ---------- */
.page-about .about-track {
  list-style: none;
  margin: 0 0 clamp(20px, 2.8vw, 32px);
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-about .about-track__node {
  display: flex;
  flex-direction: row;
  align-items: baseline;
  gap: 10px;
  padding: 14px 14px;
  background: var(--ns-paper);
  border: 1px solid var(--ns-edge);
  color: var(--ns-ink);
  text-decoration: none;
  position: relative;
  transition: transform .2s ease, border-color .2s ease, background-color .2s ease;
}
.page-about .about-track__node:hover,
.page-about .about-track__node:focus-visible {
  transform: translateY(-2px);
  border-color: var(--ns-orange);
  background: var(--ns-cream-2);
}
.page-about .about-track__num {
  font-family: var(--ns-font-data);
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
  color: var(--ns-orange);
}
.page-about .about-track__name {
  font-family: var(--ns-font-title);
  font-weight: 700;
  font-size: 16.5px;
}
@media (min-width: 820px) {
  .page-about .about-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    border-top: 2px solid var(--ns-edge);
  }
  .page-about .about-track__node {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    background: transparent;
    border: none;
    padding: 18px 16px 16px;
  }
  .page-about .about-track__node::before {
    content: "";
    position: absolute;
    top: -7px;
    left: 16px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--ns-orange);
    box-shadow: 0 0 0 3px var(--ns-cream);
    transition: background-color .2s ease, box-shadow .2s ease;
  }
  .page-about .about-track__node:hover,
  .page-about .about-track__node:focus-visible {
    background: transparent;
    border-color: transparent;
  }
  .page-about .about-track__node:hover::before,
  .page-about .about-track__node:focus-visible::before {
    background: var(--ns-lime);
    box-shadow: 0 0 0 4px rgba(182, 242, 74, .22);
  }
}
.page-about .about-track__notes {
  display: grid;
  gap: 14px;
}
.page-about .about-note {
  scroll-margin-top: 110px;
  padding-top: 14px;
  border-top: 1px solid var(--ab-line);
}
.page-about .about-note h3 {
  margin: 0 0 6px;
  font-family: var(--ns-font-data);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ns-violet);
}
.page-about .about-note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
}
@media (min-width: 820px) {
  .page-about .about-track__notes {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }
  .page-about .about-note {
    padding: 0 16px;
    border-top: none;
    border-left: 1px solid var(--ab-line);
  }
  .page-about .about-note:first-child {
    padding-left: 0;
    border-left: none;
  }
}

/* ---------- 05 社群 ---------- */
.page-about .about-cities {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.page-about .about-city {
  position: relative;
  overflow: hidden;
  padding: 16px 14px 40px;
  background: var(--ns-cream-2);
  border: 1px solid var(--ns-ink);
  transition: background-color .2s ease, transform .2s ease;
}
.page-about .about-city__name {
  display: block;
  font-family: var(--ns-font-title);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -.01em;
  color: var(--ns-navy);
}
.page-about .about-city__hint {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 13px;
  font-size: 11.5px;
  line-height: 1.45;
  color: rgba(59, 42, 34, .74);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity .2s ease, transform .2s ease;
}
.page-about .about-city:hover {
  background: var(--ns-paper);
  transform: translateY(-2px);
}
.page-about .about-city:hover .about-city__hint {
  opacity: 1;
  transform: none;
}
@media (min-width: 640px) {
  .page-about .about-cities {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
.page-about .about-space-split {
  align-items: start;
}

/* ---------- 06 合作 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 14px;
}
@media (min-width: 760px) {
  .page-about .about-partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
.page-about .about-partner {
  padding: 22px 20px 24px;
  background: var(--ns-navy);
  color: var(--ns-cream);
  border: 1px solid var(--ns-navy-deep);
  box-shadow: 8px 8px 0 rgba(182, 242, 74, .24);
}
.page-about .about-partner__k {
  display: block;
  font-family: var(--ns-font-data);
  font-weight: 700;
  font-size: 30px;
  line-height: 1;
  color: var(--ns-lime);
}
.page-about .about-partner__title {
  margin: 14px 0 8px;
  font-family: var(--ns-font-title);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -.01em;
}
.page-about .about-partner__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(244, 237, 226, .78);
}

/* ---------- 07 下一步 ---------- */
.page-about .about-next {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-next li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 2px 18px;
  padding: clamp(16px, 2.2vw, 24px) 0;
  border-top: 1px solid var(--ab-line);
}
.page-about .about-next li:last-child {
  border-bottom: 1px solid var(--ab-line);
}
.page-about .about-next__idx {
  grid-row: 1 / span 2;
  font-family: var(--ns-font-data);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.1;
  color: var(--ns-violet);
}
.page-about .about-next h3 {
  margin: 0;
  font-family: var(--ns-font-title);
  font-weight: 700;
  font-size: clamp(17px, 1.9vw, 22px);
  letter-spacing: -.015em;
}
.page-about .about-next p {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.74;
}

/* ---------- 收口 CTA ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
  background: var(--ns-navy);
  color: var(--ns-cream);
  padding: clamp(40px, 5.6vw, 74px) 0;
}
.page-about .about-cta::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--ns-orange), var(--ns-violet) 52%, var(--ns-lime));
}
.page-about .about-cta__inner {
  max-width: 760px;
}
.page-about .about-cta__title {
  margin: 0 0 12px;
  font-family: var(--ns-font-title);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 40px);
  letter-spacing: -.025em;
}
.page-about .about-cta__p {
  margin: 0 0 26px;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(244, 237, 226, .8);
}
.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-cta__links .ns-btn--ghost {
  background: transparent;
  border: 1px solid rgba(244, 237, 226, .42);
  color: var(--ns-cream);
}
.page-about .about-cta__links .ns-btn--ghost:hover {
  border-color: var(--ns-lime);
  color: var(--ns-lime);
}
.page-about .about-cta__links .ns-btn--accent {
  background: var(--ns-orange);
  border: 1px solid var(--ns-orange);
  color: var(--ns-navy-deep);
  font-weight: 700;
}
@media (prefers-reduced-motion: reduce) {
  .page-about .about-city,
  .page-about .about-track__node,
  .page-about .about-city__hint,
  .page-about .about-rail__link {
    transition: none;
  }
  .page-about .about-city:hover,
  .page-about .about-track__node:hover {
    transform: none;
  }
}
<<<END>>>