.page-about {
  --about-rail: 210px;
  --about-ink-soft: rgba(16, 23, 26, 0.68);
  --about-paper-soft: rgba(244, 239, 228, 0.8);
  background: var(--jn-zhi);
  color: var(--jn-mo);
  font-family: var(--jn-font-body);
  line-height: 1.85;
  overflow-x: hidden;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0;
  font-family: var(--jn-font-title);
  line-height: 1.2;
}

.page-about p {
  margin: 0 0 1em;
}

.page-about ul,
.page-about ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--jn-header-h) + 46px) 0 clamp(46px, 9vw, 104px);
  background:
    radial-gradient(130% 100% at 88% 4%, rgba(255, 107, 44, 0.28), transparent 58%),
    radial-gradient(90% 80% at 6% 100%, rgba(27, 110, 140, 0.38), transparent 64%),
    linear-gradient(158deg, var(--jn-ye) 0%, var(--jn-daiqing) 58%, #124350 100%);
  color: var(--jn-ci);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -16%;
  top: 36%;
  width: 68%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 212, 59, 0.7), transparent);
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-about .about-hero__crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: rgba(250, 248, 242, 0.58);
}

.page-about .about-hero__crumb a {
  color: rgba(250, 248, 242, 0.86);
  text-decoration: none;
  border-bottom: 1px solid rgba(250, 248, 242, 0.3);
  padding-bottom: 2px;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.page-about .about-hero__crumb a:hover,
.page-about .about-hero__crumb a:focus-visible {
  color: var(--jn-huang);
  border-color: var(--jn-huang);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 12px;
  font-size: 12.5px;
  letter-spacing: 0.22em;
  color: var(--jn-huang);
}

.page-about .about-hero__title {
  font-size: clamp(32px, 6.2vw, 66px);
  font-weight: 800;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-about .about-hero__lead {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--about-paper-soft);
}

.page-about .about-hero__aside {
  border-left: 1px solid rgba(250, 248, 242, 0.22);
  padding-left: 20px;
}

.page-about .about-hero__aside-title {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: rgba(250, 248, 242, 0.55);
}

.page-about .about-hero__stats {
  display: grid;
  gap: 18px;
  margin: 0;
}

.page-about .about-hero__stats dt {
  font-size: 12px;
  color: rgba(250, 248, 242, 0.6);
}

.page-about .about-hero__stats dd {
  margin: 4px 0 0;
  font-size: clamp(26px, 3.6vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--jn-huang);
}

/* ---------- 通用栅格 ---------- */
.page-about .about-block__grid {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-about .about-block__rail .jn-eyebrow {
  margin: 0 0 10px;
}

.page-about .about-block__body > p {
  max-width: 68ch;
}

/* ---------- 品牌起源 ---------- */
.page-about .about-origin {
  background: var(--jn-zhi);
}

.page-about .about-origin__figure {
  margin: 0 0 clamp(30px, 5vw, 56px);
}

.page-about .about-origin__figure img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--jn-radius);
  box-shadow: var(--jn-shadow-lift);
}

.page-about .about-notes {
  display: grid;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-notes li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--jn-line);
  font-size: 15px;
  color: var(--about-ink-soft);
}

.page-about .about-notes .jn-num {
  font-weight: 700;
  color: var(--jn-hulan);
}

/* ---------- 发展历程 ---------- */
.page-about .about-timeline {
  background: var(--jn-ci);
}

.page-about .about-timeline__grid {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
}

.page-about .about-timeline__figure {
  margin: 24px 0 0;
}

.page-about .about-timeline__figure img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--jn-radius);
  box-shadow: var(--jn-shadow);
}

.page-about .about-timeline__list {
  position: relative;
}

.page-about .about-node {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 42px) clamp(22px, 3vw, 34px);
  border-left: 1px solid var(--jn-line-strong);
  transition: border-color 0.35s ease;
}

.page-about .about-node:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--jn-wu);
  box-shadow: 0 0 0 4px var(--jn-ci);
  transition: background 0.3s ease, transform 0.3s ease;
}

.page-about .about-node:hover,
.page-about .about-node:focus-within {
  border-left-color: var(--jn-cheng);
}

.page-about .about-node:hover::before,
.page-about .about-node.is-lit::before {
  background: var(--jn-cheng);
  transform: scale(1.3);
}

.page-about .about-node.is-lit .about-node__tag {
  color: var(--jn-cheng);
}

.page-about .about-node__tag {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--jn-hulan);
}

.page-about .about-node__title {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.2vw, 25px);
  font-weight: 700;
  color: var(--jn-daiqing);
}

.page-about .about-node p {
  max-width: 64ch;
  color: var(--about-ink-soft);
}

.page-about .about-node__extra {
  margin: 12px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--jn-wu);
  font-size: 14px;
  color: rgba(16, 23, 26, 0.56);
}

/* ---------- 价值主张 ---------- */
.page-about .about-values {
  background: var(--jn-zhi);
}

.page-about .about-values__grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(28px, 4vw, 46px);
  background: var(--jn-line);
  border: 1px solid var(--jn-line);
  border-radius: var(--jn-radius);
  overflow: hidden;
}

.page-about .about-value {
  --about-acc: var(--jn-hulan);
  position: relative;
  padding: clamp(22px, 3vw, 34px) clamp(18px, 2.4vw, 28px);
  background: var(--jn-ci);
}

.page-about .about-value::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--about-acc);
}

.page-about .about-value--club {
  --about-acc: var(--jn-shui);
}

.page-about .about-value--brand {
  --about-acc: var(--jn-cheng);
}

.page-about .about-value h3 {
  margin: 0 0 12px;
  font-size: 20px;
  color: var(--jn-daiqing);
}

.page-about .about-value p {
  color: var(--about-ink-soft);
  font-size: 15px;
}

.page-about .about-value ul {
  display: grid;
  gap: 9px;
  margin-top: 16px;
}

.page-about .about-value li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  color: rgba(16, 23, 26, 0.78);
}

.page-about .about-value li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 1px;
  background: var(--about-acc);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--jn-ci);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-team__text > p {
  max-width: 66ch;
  color: var(--about-ink-soft);
}

.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--jn-radius);
  box-shadow: var(--jn-shadow-lift);
}

.page-about .about-team__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 24px;
  margin: clamp(24px, 3vw, 32px) 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--jn-line);
}

.page-about .about-team__stats dt {
  font-size: 12.5px;
  color: rgba(16, 23, 26, 0.6);
}

.page-about .about-team__stats dd {
  margin: 6px 0 0;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--jn-daiqing);
}

/* ---------- 合作与荣誉 ---------- */
.page-about .about-partners {
  background: linear-gradient(150deg, var(--jn-ye) 0%, var(--jn-daiqing) 100%);
  color: var(--jn-zhi);
}

.page-about .about-partners .jn-eyebrow,
.page-about .about-partners .about-block__rail .jn-meta {
  color: var(--jn-huang);
}

.page-about .about-partners .jn-title {
  color: var(--jn-ci);
}

.page-about .about-partners .about-block__body > p {
  color: var(--about-paper-soft);
}

.page-about .about-honors {
  display: grid;
  gap: 1px;
  margin-top: clamp(30px, 4vw, 50px);
  background: rgba(250, 248, 242, 0.16);
  border: 1px solid rgba(250, 248, 242, 0.16);
  border-radius: var(--jn-radius);
  overflow: hidden;
}

.page-about .about-honor {
  padding: clamp(20px, 3vw, 30px);
  background: rgba(7, 30, 38, 0.55);
}

.page-about .about-honor__label {
  margin: 0 0 10px;
  font-family: var(--jn-font-num);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--jn-huang);
}

.page-about .about-honor h3 {
  margin: 0 0 8px;
  font-size: 19px;
  color: var(--jn-ci);
}

.page-about .about-honor p {
  margin: 0;
  font-size: 14.5px;
  color: rgba(244, 239, 228, 0.78);
}

/* ---------- 结尾带 ---------- */
.page-about .about-cta {
  padding: clamp(38px, 6vw, 68px) 0;
  background: linear-gradient(102deg, var(--jn-huang) 0%, var(--jn-cheng) 78%);
  color: var(--jn-ye);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 22px;
}

.page-about .about-cta__title {
  margin: 0 0 10px;
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-about .about-cta p {
  margin: 0;
  max-width: 52ch;
  color: rgba(7, 30, 38, 0.84);
}

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

.page-about .about-cta .jn-btn--solid {
  background: var(--jn-ye);
  border-color: var(--jn-ye);
  color: var(--jn-ci);
}

.page-about .about-cta .jn-btn--solid:hover,
.page-about .about-cta .jn-btn--solid:focus-visible {
  background: var(--jn-daiqing);
  border-color: var(--jn-daiqing);
}

.page-about .about-cta .jn-btn--ghost {
  color: var(--jn-ye);
  border-color: rgba(7, 30, 38, 0.45);
}

.page-about .about-cta .jn-btn--ghost:hover,
.page-about .about-cta .jn-btn--ghost:focus-visible {
  background: rgba(7, 30, 38, 0.1);
  border-color: var(--jn-ye);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-about .about-team__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-honors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-about .about-values__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.7fr) minmax(240px, 0.85fr);
    grid-template-areas:
      "crumb crumb"
      "lead aside";
    column-gap: clamp(32px, 5vw, 76px);
  }

  .page-about .about-hero__crumb {
    grid-area: crumb;
  }

  .page-about .about-hero__lead-col {
    grid-area: lead;
  }

  .page-about .about-hero__aside {
    grid-area: aside;
    align-self: end;
  }
}

@media (min-width: 960px) {
  .page-about .about-block__grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-timeline__grid {
    grid-template-columns: minmax(240px, 0.82fr) minmax(0, 1.6fr);
    align-items: start;
  }

  .page-about .about-timeline__rail {
    position: sticky;
    top: calc(var(--jn-header-h) + 26px);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node,
  .page-about .about-node::before {
    transition: none;
  }
}
</main>