.page-about {
  --about-index-w: 150px;
  --about-sticky: 96px;
  --about-slash: rgba(201, 162, 39, 0.22);
  overflow-x: hidden;
}

/* —— 首屏 —— */
.page-about .about-hero {
  padding: calc(var(--header-h, 72px) + 24px) 0 56px;
  background:
    radial-gradient(120% 90% at 82% -12%, rgba(201, 162, 39, 0.16), transparent 62%),
    radial-gradient(90% 70% at 0% 110%, rgba(47, 217, 192, 0.08), transparent 60%),
    var(--felt);
}

.page-about .about-hero__frame {
  position: relative;
  padding: clamp(22px, 4.5vw, 54px);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 48, 40, 0.55), rgba(11, 31, 24, 0.2));
}

.page-about .about-hero__frame::before,
.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 1px solid var(--gold);
  opacity: 0.65;
}

.page-about .about-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-about .about-hero__frame::after {
  right: -1px;
  bottom: -1px;
  border-left: 0;
  border-top: 0;
}

.page-about .about-hero__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: clamp(20px, 3.4vw, 38px);
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  color: var(--paper);
  text-shadow: 0 0 24px rgba(201, 162, 39, 0.22);
}

.page-about .about-hero__lead {
  max-width: 42em;
  color: var(--muted);
  margin-bottom: 32px;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--felt);
}

.page-about .about-hero__stat .num {
  color: var(--gold-bright);
  font-size: var(--fs-28);
  letter-spacing: 0.02em;
}

.page-about .about-hero__stat-label {
  font-size: var(--fs-11);
  letter-spacing: 0.16em;
  color: var(--muted);
}

/* —— 通用区块微调 —— */
.page-about .section {
  padding: clamp(48px, 7vw, 92px) 0;
}

.page-about .section-head {
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .section-head .title-lg {
  margin: 10px 0 0;
}

/* —— 01 起点 —— */
.page-about .origin__body {
  display: grid;
  gap: 28px;
}

.page-about .origin__text p {
  margin: 0 0 18px;
  color: var(--paper);
}

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

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

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

.page-about .media-frame__caption {
  color: var(--muted);
  font-size: var(--fs-11);
  letter-spacing: 0.08em;
  margin: 10px 0 0;
}

/* —— 换气暗区 —— */
.page-about .breath {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 44px 0;
  padding-left: max(var(--gutter), calc((100vw - 1240px) / 2));
  background: var(--felt-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .breath__num {
  font-family: var(--font-mono);
  font-size: var(--fs-44);
  color: var(--cyan);
  letter-spacing: 0.06em;
  opacity: 0.7;
  line-height: 1;
}

.page-about .breath__line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

/* —— 02 时间线 —— */
.page-about .tl {
  display: grid;
  gap: 24px;
}

.page-about .tl-index {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-about .tl-index__item {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  background: var(--table);
  color: var(--muted);
  text-decoration: none;
  font-size: var(--fs-11);
  letter-spacing: 0.14em;
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}

.page-about .tl-index__item:hover,
.page-about .tl-index__item:focus-visible {
  border-color: var(--gold);
  color: var(--gold-bright);
  outline: none;
}

.page-about .tl-index__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--line);
}

.page-about .tl-index__item:hover .tl-index__dot,
.page-about .tl-index__item:focus-visible .tl-index__dot {
  background: var(--cyan);
}

.page-about .tl-index__yr {
  font-family: var(--font-mono);
  color: var(--paper);
  letter-spacing: 0.06em;
}

.page-about .tl-index__tag {
  font-family: var(--font-mono);
  color: var(--gold);
}

.page-about .tl-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 32px;
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 0 20px;
  border-left: 1px solid var(--line);
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  width: 1px;
  height: 46px;
  background: var(--gold);
}

.page-about .tl-item__head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.page-about .tl-item__ring {
  flex: 0 0 auto;
}

.page-about .tl-item__year {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .tl-item__head .title-md {
  margin: 0;
  color: var(--paper);
}

.page-about .tl-item__body p {
  margin: 0 0 14px;
  color: var(--muted);
  max-width: 40em;
}

.page-about .tl-item__media {
  margin-top: 18px;
  border: 1px solid var(--line);
}

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

/* —— 03 分工 —— */
.page-about .crew {
  background: var(--table);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .crew__media {
  margin-bottom: 32px;
  border: 1px solid var(--line);
  background: var(--felt);
}

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

.page-about .crew__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .crew-card {
  position: relative;
  padding: 24px 22px 26px;
  background: var(--felt);
  border: 1px solid var(--line);
}

.page-about .crew-card .card__index {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .crew-card .card__title {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-size: var(--fs-28);
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-about .crew-card__num {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-18);
  color: var(--gold-bright);
  letter-spacing: 0.06em;
}

.page-about .crew-card p:last-child {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--muted);
}

/* —— 04 规则制定 —— */
.page-about .flow__lead {
  max-width: 44em;
  color: var(--muted);
  margin-bottom: 30px;
}

.page-about .flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .flow__step {
  position: relative;
  padding: 22px 20px;
  background: var(--felt);
}

.page-about .flow__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.22em;
  color: var(--cyan);
  margin-bottom: 10px;
}

.page-about .flow__title {
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-size: var(--fs-18);
  font-weight: 600;
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-about .flow__step p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--muted);
}

/* —— 05 地区 —— */
.page-about .geo {
  background:
    linear-gradient(180deg, rgba(7, 15, 12, 0.9), rgba(11, 31, 24, 0.4)),
    var(--felt-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .geo__grid {
  display: grid;
  gap: 28px;
}

.page-about .geo__figure {
  border-left: 2px solid var(--gold);
  padding-left: 18px;
}

.page-about .geo__big {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(64px, 16vw, 132px);
  line-height: 0.9;
  color: var(--gold-bright);
  letter-spacing: 0.02em;
}

.page-about .geo__caption {
  margin: 10px 0 0;
  font-size: var(--fs-11);
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-about .geo__text .title-lg {
  margin: 0 0 16px;
}

.page-about .geo__text p {
  color: var(--muted);
  margin: 0 0 18px;
}

.page-about .geo__chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
}

.page-about .geo__chips .chip {
  padding: 6px 14px;
  border: 1px solid var(--gold-shadow);
  background: rgba(201, 162, 39, 0.08);
  color: var(--gold-bright);
  font-size: var(--fs-11);
  letter-spacing: 0.14em;
}

.page-about .geo__note {
  font-size: var(--fs-14);
  color: var(--paper);
  border-top: 1px solid var(--line);
  padding-top: 16px;
  margin: 0;
}

/* —— 06 准则 —— */
.page-about .rule-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .rule-card {
  position: relative;
  overflow: hidden;
  padding: 26px 22px 24px;
  background: var(--table);
  border: 1px solid var(--line);
  transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}

.page-about .rule-card__slash {
  position: absolute;
  top: -18px;
  left: -18px;
  width: 68px;
  height: 68px;
  background: var(--about-slash);
  transform: translate(-40px, -40px) rotate(12deg);
  transition: transform 260ms var(--ease);
}

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

.page-about .rule-card:hover .rule-card__slash,
.page-about .rule-card:focus-within .rule-card__slash {
  transform: translate(0, 0) rotate(12deg);
}

.page-about .rule-card__num {
  position: relative;
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.22em;
  color: var(--cyan);
  margin-bottom: 10px;
}

.page-about .rule-card__title {
  position: relative;
  margin: 0 0 10px;
  font-family: var(--font-body);
  font-size: var(--fs-18);
  font-weight: 600;
  color: var(--paper);
}

.page-about .rule-card p {
  position: relative;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--muted);
}

/* —— 07 底色 —— */
.page-about .terroir {
  background: var(--felt);
}

.page-about .terroir__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-about .terroir__text .title-lg {
  margin: 10px 0 18px;
}

.page-about .terroir__text p {
  color: var(--muted);
  margin: 0 0 18px;
}

.page-about .terroir__mark {
  display: flex;
  justify-content: center;
  opacity: 0.9;
}

.page-about .terroir__mark svg {
  width: min(320px, 100%);
  height: auto;
}

/* —— 结尾 —— */
.page-about .next-step {
  background: var(--felt-deep);
  border-top: 1px solid var(--line);
  padding-bottom: clamp(56px, 8vw, 96px);
}

.page-about .next-step__inner {
  border: 1px solid var(--gold-shadow);
  padding: clamp(24px, 4vw, 44px);
  background: linear-gradient(135deg, rgba(201, 162, 39, 0.09), transparent 60%);
}

.page-about .next-step .title-md {
  margin: 0 0 12px;
  color: var(--paper);
}

.page-about .next-step p {
  color: var(--muted);
  margin: 0 0 22px;
  max-width: 40em;
}

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

/* —— 中等屏 —— */
@media (min-width: 720px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .origin__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 36px;
  }

  .page-about .crew__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .flow__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .rule-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .geo__grid {
    grid-template-columns: minmax(0, 0.6fr) minmax(0, 1.4fr);
    gap: 44px;
    align-items: center;
  }
}

/* —— 桌面 —— */
@media (min-width: 1024px) {
  .page-about .tl {
    grid-template-columns: var(--about-index-w) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .tl-index {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
    position: sticky;
    top: var(--about-sticky);
  }

  .page-about .tl-index__item {
    width: 100%;
    justify-content: flex-start;
    background: transparent;
    border: 0;
    border-left: 1px solid var(--line);
    padding: 10px 0 10px 14px;
  }

  .page-about .tl-index__item:hover,
  .page-about .tl-index__item:focus-visible {
    border-left-color: var(--gold);
    background: rgba(201, 162, 39, 0.06);
  }

  .page-about .tl-list {
    gap: 56px;
    max-width: 62em;
  }

  .page-about .tl-item {
    padding-left: 32px;
  }

  .page-about .flow__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .rule-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .terroir__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .rule-card,
  .page-about .rule-card__slash {
    transition: none;
  }

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