.page-about {
  --about-w: 180px;
  background: var(--ink);
  color: var(--bone);
  font-family: var(--font-sans);
  padding-bottom: 72px;
}

.page-about .about-crumbs {
  padding: 22px 0 0;
}

.page-about .about-crumbs .breadcrumbs__link,
.page-about .about-crumbs .breadcrumbs__item {
  font-size: 13px;
  color: var(--mist);
}

.page-about .about-crumbs .breadcrumbs__item[aria-current="page"] {
  color: var(--lime);
}

/* ---------- 开场分屏 ---------- */
.page-about .about-hero {
  padding: 20px 0 8px;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 8vw, 62px);
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 14px 0 16px;
  max-width: 11em;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
  margin-top: 26px;
}

.page-about .about-figure {
  border-left: 2px solid var(--lime);
  padding-left: 12px;
  min-width: 0;
}

.page-about .about-figure:nth-child(2) {
  border-left-color: var(--orange);
}

.page-about .about-figure:nth-child(3) {
  border-left-color: var(--red);
}

.page-about .about-figure__num {
  display: block;
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--bone);
}

.page-about .about-figure__unit {
  font-size: 13px;
  color: var(--lime);
  margin-left: 2px;
}

.page-about .about-figure__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.4;
  color: var(--mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-about .about-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: var(--r-btn);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease),
    color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-btn--lime {
  background: var(--lime);
  color: var(--ink);
}

.page-about .about-btn--lime:hover {
  transform: translateY(-2px);
  background: #d6ff6b;
}

.page-about .about-btn--ghost {
  border-color: var(--line-strong);
  color: var(--bone);
}

.page-about .about-btn--ghost:hover {
  transform: translateY(-2px);
  border-color: var(--lime);
  color: var(--lime);
}

.page-about .about-btn--dark {
  background: var(--ink);
  color: var(--lime);
}

.page-about .about-btn--dark:hover {
  transform: translateY(-2px);
  background: var(--char);
}

.page-about .about-btn--line {
  border-color: var(--ink);
  color: var(--ink);
}

.page-about .about-btn--line:hover {
  transform: translateY(-2px);
  background: rgba(7, 26, 20, 0.1);
}

.page-about .about-hero__visual {
  position: relative;
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-about .about-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(200deg, rgba(200, 255, 61, 0.16), transparent 44%, rgba(255, 106, 43, 0.18));
}

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

/* ---------- 侧栏 + 内容 ---------- */
.page-about .about-body {
  display: grid;
  gap: 4px;
  padding-top: 36px;
}

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

.page-about .about-rail__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .about-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-rail__list::-webkit-scrollbar {
  display: none;
}

.page-about .chapter-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  color: var(--mist);
  font-size: 13px;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-about .chapter-link:hover {
  color: var(--bone);
  border-color: var(--line-strong);
}

.page-about .chapter-link__idx {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-about .chapter-link[aria-current="true"] {
  color: var(--lime);
  border-color: var(--lime);
  background: var(--lime-soft);
}

.page-about .chapter-link[aria-current="true"] .chapter-link__idx {
  color: var(--lime);
}

/* ---------- 章节通用 ---------- */
.page-about .about-sec {
  padding: 34px 0;
}

.page-about .about-sec + .about-sec {
  border-top: 1px solid var(--line);
}

.page-about .about-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px;
}

.page-about .about-sec__num {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--lime);
  flex: none;
}

.page-about .about-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 5.4vw, 36px);
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--bone);
}

.page-about .about-sec__intro {
  margin: -6px 0 20px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-prose {
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-prose p {
  margin: 0 0 14px;
}

.page-about .about-prose p:last-child {
  margin-bottom: 0;
}

.page-about .about-prose strong {
  color: var(--bone);
  font-weight: 600;
}

/* ---------- 原则卡片 ---------- */
.page-about .about-rules {
  display: grid;
  gap: 14px;
}

.page-about .about-rule {
  background: var(--teal);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 18px 18px 16px;
  min-width: 0;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-rule:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.page-about .about-rule__sum {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.15;
  color: var(--lime);
}

.page-about .about-rule__sum::-webkit-details-marker {
  display: none;
}

.page-about .about-rule__num {
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  color: var(--orange);
  border: 1px solid rgba(255, 106, 43, 0.5);
  border-radius: var(--r-pill);
  padding: 2px 8px;
  flex: none;
}

.page-about .about-rule__lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--bone);
}

.page-about .about-rule__more {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-rules__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-rules__note a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 22px;
  list-style: none;
  display: grid;
  gap: 26px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(var(--lime), var(--orange), var(--red));
}

.page-about .about-tl {
  position: relative;
  min-width: 0;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: -23px;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 106, 43, 0.16);
}

.page-about .about-tl__tag {
  display: inline-block;
  padding: 3px 9px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  opacity: 0.6;
  transition: opacity var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-about .about-tl:hover .about-tl__tag {
  opacity: 1;
  color: var(--lime);
  border-color: var(--lime);
}

.page-about .about-tl__year {
  display: block;
  margin: 10px 0 2px;
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--bone);
}

.page-about .about-tl__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.2;
  color: var(--lime);
}

.page-about .about-tl__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 22px;
}

.page-about .about-team__fig {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-about .about-roles {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .about-role {
  display: grid;
  gap: 4px;
  padding-left: 13px;
  border-left: 2px solid var(--line-strong);
  transition: border-color var(--dur) var(--ease);
}

.page-about .about-role:hover {
  border-left-color: var(--lime);
}

.page-about .about-role__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--bone);
  letter-spacing: 0.01em;
}

.page-about .about-role__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  background: var(--wine);
  border: 1px solid rgba(196, 58, 58, 0.36);
  border-radius: var(--r-lg);
  padding: 24px 18px;
}

.page-about .about-eco__kicker {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--orange);
  margin-bottom: 8px;
}

.page-about .about-eco__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 5vw, 32px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--bone);
}

.page-about .about-prose--onwine {
  color: rgba(244, 241, 232, 0.8);
}

.page-about .about-eco__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0;
}

.page-about .about-eco__cell {
  padding-left: 11px;
  border-left: 2px solid rgba(244, 241, 232, 0.3);
  min-width: 0;
}

.page-about .about-eco__num {
  display: block;
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--orange);
}

.page-about .about-eco__label {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  line-height: 1.4;
  color: rgba(244, 241, 232, 0.72);
}

.page-about .about-eco__foot {
  display: grid;
  gap: 16px;
}

.page-about .about-eco__fig {
  margin: 0;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid rgba(244, 241, 232, 0.18);
}

.page-about .about-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--r-md);
  background: rgba(7, 26, 20, 0.4);
  border: 1px solid rgba(200, 255, 61, 0.28);
  color: var(--lime);
}

.page-about .about-badge svg {
  width: 40px;
  height: 40px;
  flex: none;
  color: var(--lime);
}

.page-about .about-badge p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--bone);
}

/* ---------- 品牌承诺 ---------- */
.page-about .about-cta {
  background: var(--lime);
  color: var(--ink);
  border-radius: var(--r-lg);
  padding: 24px 18px;
}

.page-about .about-cta__kicker {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(7, 26, 20, 0.7);
  margin-bottom: 8px;
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 5.6vw, 36px);
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-about .about-cta__text {
  margin: 0 0 18px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(7, 26, 20, 0.82);
}

.page-about .about-cta__contacts {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .about-cta__contacts li {
  display: grid;
  gap: 2px;
  padding-top: 10px;
  border-top: 1px solid rgba(7, 26, 20, 0.2);
}

.page-about .about-cta__key {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(7, 26, 20, 0.62);
}

.page-about .about-cta__val {
  font-family: var(--font-num);
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  word-break: break-word;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 720px) {
  .page-about .about-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-eco__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-eco {
    padding: 32px 28px;
  }

  .page-about .about-eco__foot {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    gap: 20px;
  }

  .page-about .about-cta {
    padding: 34px 30px;
  }

  .page-about .about-cta__contacts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 24px;
  }

  .page-about .about-cta__contacts li:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 24px 0 12px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 5fr 7fr;
    gap: 48px;
  }

  .page-about .about-sec {
    padding: 46px 0;
  }

  .page-about .about-rules {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 16px;
    align-items: stretch;
  }

  .page-about .about-rule:nth-child(1) {
    grid-column: span 5;
  }

  .page-about .about-rule:nth-child(2) {
    grid-column: span 4;
  }

  .page-about .about-rule:nth-child(3) {
    grid-column: span 3;
  }

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

  .page-about .about-timeline::before {
    display: none;
  }

  .page-about .about-tl {
    padding: 24px 22px 0 0;
    border-top: 2px solid var(--line-strong);
  }

  .page-about .about-tl:first-child {
    border-top-color: var(--lime);
  }

  .page-about .about-tl::before {
    left: 0;
    top: -6px;
    width: 10px;
    height: 10px;
  }

  .page-about .about-team {
    grid-template-columns: 6fr 6fr;
    gap: 32px;
    align-items: start;
  }

  .page-about .about-team__fig {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}

@media (min-width: 960px) {
  .page-about .about-body {
    grid-template-columns: var(--about-w) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
    padding-top: 52px;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-about .about-rail__list {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
    padding-bottom: 0;
  }

  .page-about .chapter-link {
    border-radius: var(--r-sm);
    padding: 9px 10px;
    border-color: transparent;
    white-space: normal;
  }

  .page-about .chapter-link[aria-current="true"] {
    border-color: var(--lime);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-btn,
  .page-about .about-rule,
  .page-about .about-role,
  .page-about .about-tl__tag,
  .page-about .chapter-link {
    transition: none;
  }

  .page-about .about-btn:hover,
  .page-about .about-rule:hover {
    transform: none;
  }
}
<<<END>>>