.page-about {
  --about-rail: 168px;
  background: var(--cream);
  color: var(--cocoa);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(16px, 2.4vw, 28px);
  padding-bottom: clamp(32px, 5vw, 56px);
  background: linear-gradient(180deg, var(--cream) 0%, var(--cream) 66%, var(--bake) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -26%;
  right: -14%;
  width: min(760px, 82vw);
  height: min(760px, 82vw);
  border-radius: 50%;
  background: radial-gradient(circle at 42% 42%, rgba(255, 179, 122, .55), rgba(255, 246, 236, 0) 68%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.6vw, 44px);
  align-items: end;
  margin-top: clamp(18px, 3vw, 34px);
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

.page-about .about-hero__media {
  margin: 0;
  background: var(--fruit);
  aspect-ratio: 3 / 4;
  overflow: hidden;
  position: relative;
}

@media (min-width: 900px) {
  .page-about .about-hero__media { aspect-ratio: 6 / 7; }
}

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

.page-about .about-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--berry);
}

.page-about .about-hero__title {
  margin: 0 0 clamp(14px, 2.2vw, 22px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--cocoa);
}

.page-about .about-hero__hl {
  background: linear-gradient(180deg, transparent 62%, var(--peach) 62%);
  padding: 0 .06em;
}

.page-about .about-hero__lede {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 52ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.75;
  color: var(--cocoa-soft);
}

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

.page-about .about-hero__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(28px, 4vw, 46px) 0 0;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 760px) {
  .page-about .about-hero__meta { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.page-about .about-hero__meta > div {
  background: var(--cream);
  padding: 14px 16px 16px;
}

.page-about .about-hero__meta dt {
  margin: 0 0 6px;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cocoa-soft);
}

.page-about .about-hero__meta dd {
  margin: 0;
  font-family: var(--font-index);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--cocoa);
}

.page-about .index-strip {
  margin-top: clamp(26px, 3.6vw, 42px);
}

/* ---------- 主体骨架：左窄栏 + 右宽栏 ---------- */
.page-about .about-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(48px, 6vw, 88px);
}

@media (min-width: 1000px) {
  .page-about .about-shell {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 72px);
  }
}

.page-about .about-rail {
  border-top: 3px solid var(--fruit);
  padding-top: 14px;
}

@media (min-width: 1000px) {
  .page-about .about-rail {
    position: sticky;
    top: 96px;
    align-self: start;
    border-top: 0;
    border-left: 3px solid var(--fruit);
    padding: 6px 0 0 16px;
  }
}

.page-about .about-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cocoa-soft);
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-rail__item { flex: 0 0 auto; }

.page-about .about-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: var(--cream);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-about .about-rail__link:hover {
  border-color: var(--fruit);
  background: var(--bake);
}

.page-about .about-rail__num {
  font-family: var(--font-index);
  font-size: 13px;
  font-weight: 700;
  color: var(--berry);
}

.page-about .about-rail__name {
  font-size: 13px;
  color: var(--cocoa-soft);
}

.page-about .about-rail__foot {
  margin: 14px 0 0;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cocoa-soft);
}

@media (min-width: 1000px) {
  .page-about .about-rail__list {
    display: block;
    overflow: visible;
  }

  .page-about .about-rail__item {
    position: relative;
    padding: 0 0 24px 18px;
  }

  .page-about .about-rail__item::before {
    content: "";
    position: absolute;
    left: 3px;
    top: 12px;
    bottom: -4px;
    width: 1px;
    background: var(--line);
  }

  .page-about .about-rail__item:last-child::before { display: none; }

  .page-about .about-rail__item::after {
    content: "";
    position: absolute;
    left: 0;
    top: 5px;
    width: 7px;
    height: 7px;
    background: var(--fruit);
  }

  .page-about .about-rail__link {
    display: block;
    padding: 0;
    border: 0;
    background: none;
    white-space: normal;
  }

  .page-about .about-rail__link:hover { background: none; }

  .page-about .about-rail__num,
  .page-about .about-rail__name { display: block; }

  .page-about .about-rail__name { margin-top: 2px; }
}

.page-about .about-flow { min-width: 0; }

/* ---------- 章节节奏 ---------- */
.page-about .about-sec {
  padding: clamp(28px, 4vw, 52px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.page-about .about-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-sec--panel {
  background: var(--bake);
  border-top: 0;
  padding: clamp(24px, 3.4vw, 44px);
  margin: clamp(8px, 1.6vw, 20px) 0;
}

.page-about .about-sec__title {
  margin: 10px 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--cocoa);
}

.page-about .about-sec__lede {
  margin: 12px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.7;
  color: var(--cocoa-soft);
}

.page-about .about-sec .prose { margin-top: clamp(16px, 2.4vw, 24px); }
.page-about .about-sec .prose p + p { margin-top: 14px; }

/* ---------- 三条收益 ---------- */
.page-about .about-points {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 760px) {
  .page-about .about-points { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.page-about .about-points li {
  background: var(--cream);
  padding: 18px 18px 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cocoa-soft);
}

.page-about .about-points b {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-index);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--berry);
}

/* ---------- 六个编号抽屉 ---------- */
.page-about .about-channels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(232px, 1fr));
  gap: clamp(12px, 1.8vw, 20px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .drawer {
  display: flex;
  flex-direction: column;
  background: var(--cream);
  border: 1px solid var(--line);
  border-top: 3px solid var(--fruit);
  padding: 18px 18px 16px;
  scroll-margin-top: 96px;
  transition: border-color .24s var(--ease), transform .24s var(--ease);
}

.page-about .drawer:hover {
  border-color: var(--peach);
  transform: translateY(-2px);
}

.page-about .drawer__num {
  margin: 0 0 10px;
  font-family: var(--font-index);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--fruit);
}

.page-about .drawer__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--cocoa);
}

.page-about .drawer__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cocoa-soft);
}

.page-about .drawer__more {
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 14px;
  line-height: 1.7;
  color: var(--cocoa-soft);
  transition: max-height .3s var(--ease), opacity .3s var(--ease), margin-top .3s var(--ease);
}

.page-about .drawer:hover .drawer__more,
.page-about .drawer:focus-within .drawer__more {
  max-height: 8em;
  opacity: 1;
  margin-top: 10px;
}

@media (hover: none), (max-width: 639px) {
  .page-about .drawer__more {
    max-height: none;
    opacity: 1;
    margin-top: 10px;
  }
}

.page-about .drawer:nth-child(1) { border-top-color: var(--fruit); }
.page-about .drawer:nth-child(1) .drawer__num { color: var(--fruit); }
.page-about .drawer:nth-child(2) { border-top-color: var(--berry); }
.page-about .drawer:nth-child(2) .drawer__num { color: var(--berry); }
.page-about .drawer:nth-child(3) { border-top-color: var(--lime-deep); }
.page-about .drawer:nth-child(3) .drawer__num { color: var(--lime-deep); }
.page-about .drawer:nth-child(4) { border-top-color: var(--berry-deep); }
.page-about .drawer:nth-child(4) .drawer__num { color: var(--berry-deep); }
.page-about .drawer:nth-child(5) { border-top-color: var(--fruit); }
.page-about .drawer:nth-child(5) .drawer__num { color: var(--fruit); }
.page-about .drawer:nth-child(6) { border-top-color: var(--cocoa-soft); }
.page-about .drawer:nth-child(6) .drawer__num { color: var(--cocoa-soft); }

/* ---------- 配图 ---------- */
.page-about .about-media {
  margin: clamp(22px, 3.2vw, 36px) 0 0;
  border: 1px solid var(--line);
  background: var(--bake);
}

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

.page-about .about-media--wide img { aspect-ratio: 7 / 5; }

.page-about .about-media figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  background: var(--cream);
  font-size: 13px;
  line-height: 1.6;
  color: var(--cocoa-soft);
}

/* ---------- 版本手风琴 ---------- */
.page-about .accordion {
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .ver-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .ver-head__num {
  min-width: 3.8em;
  font-family: var(--font-index);
  font-size: 15px;
  font-weight: 700;
  color: var(--fruit);
}

.page-about .ver-head__name {
  font-size: 17px;
  font-weight: 700;
  color: var(--cocoa);
}

.page-about .ver-body {
  margin: 0 0 12px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--cocoa-soft);
}

.page-about .ver-body:last-child { margin-bottom: 0; }

/* ---------- 会员对照表 ---------- */
.page-about .about-table {
  margin-top: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--line);
  background: var(--cream);
  overflow-x: auto;
}

.page-about .about-table .data-table { min-width: 620px; }

.page-about .about-note {
  margin-top: clamp(18px, 2.6vw, 26px);
  padding: 16px 18px;
  border-left: 3px solid var(--berry);
  background: var(--cream);
}

.page-about .about-note__title {
  margin: 0 0 8px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--berry);
}

.page-about .about-note__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--cocoa-soft);
}

.page-about .about-note__body + .about-note__body { margin-top: 8px; }

/* ---------- 编辑流程 ---------- */
.page-about .path-list { margin-top: clamp(20px, 3vw, 32px); }

.page-about .path-step__num { color: var(--berry); }

/* ---------- 长期价值 ---------- */
.page-about .keep-list {
  list-style: none;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 720px) {
  .page-about .keep-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.page-about .keep-list li {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 18px 20px;
  background: var(--cream);
}

.page-about .keep-list__num {
  font-family: var(--font-index);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--fruit);
}

.page-about .keep-list__label {
  font-size: 15px;
  line-height: 1.7;
  color: var(--cocoa-soft);
}

/* ---------- 下一步入口 ---------- */
.page-about .next-list {
  list-style: none;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 720px) {
  .page-about .next-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.page-about .next-list li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px 18px;
  background: var(--cream);
}

.page-about .next-list a {
  align-self: flex-start;
  padding-bottom: 1px;
  font-weight: 700;
  color: var(--cocoa);
  text-decoration: none;
  border-bottom: 2px solid var(--peach);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .next-list a:hover {
  color: var(--berry);
  border-color: var(--berry);
}

.page-about .next-list span {
  font-size: 14px;
  line-height: 1.65;
  color: var(--cocoa-soft);
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .drawer,
  .page-about .drawer__more,
  .page-about .about-rail__link,
  .page-about .next-list a {
    transition: none;
  }

  .page-about .drawer:hover { transform: none; }
}