.page-about {
  --about-rail: 216px;
  --about-gap: clamp(28px, 4vw, 62px);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-about .about-top {
  padding: 22px 0 6px;
}

.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

.page-about .about-content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(52px, 7.5vw, 104px);
}

.page-about .about-block {
  scroll-margin-top: 116px;
  min-width: 0;
}

/* ---------- 左侧品牌轨道 ---------- */
.page-about .about-rail {
  border-top: 2px solid var(--red);
  padding-top: 14px;
  min-width: 0;
}

.page-about .about-rail__kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gray);
  margin: 0 0 8px;
  text-transform: uppercase;
}

.page-about .about-rail__title {
  font-family: var(--font-head);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}

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

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

.page-about .about-rail__item {
  flex: none;
}

.page-about .about-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 13px;
  font-size: 14px;
  color: var(--ink-soft);
  text-decoration: none;
  background: var(--paper-2);
  border: 1px solid var(--hair-soft);
  border-radius: 999px;
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.page-about .about-rail__link .mono {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--red);
  background: var(--red-wash);
  border-color: var(--red);
}

.page-about .about-rail__link:hover .mono,
.page-about .about-rail__link:focus-visible .mono {
  color: var(--red);
}

.page-about .about-rail__foot {
  display: none;
}

/* ---------- 首屏自述 ---------- */
.page-about .about-open .index-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-deep);
  margin: 0 0 14px;
}

.page-about .about-h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 5.6vw, 58px);
  line-height: 1.2;
  letter-spacing: -0.022em;
  margin: 0 0 22px;
  max-width: 19ch;
  color: var(--ink);
}

.page-about .about-lede {
  font-size: clamp(16px, 1.55vw, 19px);
  line-height: 1.88;
  color: var(--ink-soft);
  max-width: 38em;
  margin: 0;
}

.page-about .about-open__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: clamp(26px, 3.4vw, 40px);
}

.page-about .about-fact {
  background: var(--paper);
  padding: 17px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
}

.page-about .about-fact:nth-child(1) .about-fact__num { color: var(--red); }
.page-about .about-fact:nth-child(2) .about-fact__num { color: var(--gold-deep); }
.page-about .about-fact:nth-child(3) .about-fact__num { color: var(--table); }
.page-about .about-fact:nth-child(4) .about-fact__num { color: var(--clay); }

.page-about .about-fact__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--gray);
}

.page-about .about-open__media {
  margin: clamp(30px, 4.4vw, 52px) 0 0;
}

/* ---------- 通用媒体与正文 ---------- */
.page-about .media {
  margin: 0;
}

.page-about .media__frame {
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper-2);
}

.page-about .about-open__media .media__frame {
  aspect-ratio: 16 / 9;
}

.page-about .about-team__media .media__frame {
  aspect-ratio: 3 / 2;
}

.page-about .about-eco__media .media__frame {
  aspect-ratio: 1 / 1;
}

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

.page-about .media__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.68;
  color: var(--gray);
  border-left: 2px solid var(--gold);
  padding-left: 11px;
}

.page-about .about-h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(23px, 3.1vw, 36px);
  line-height: 1.32;
  letter-spacing: -0.016em;
  margin: 0 0 16px;
  max-width: 22ch;
}

.page-about .about-p {
  font-size: 16px;
  line-height: 1.88;
  color: var(--ink-soft);
  max-width: 38em;
  margin: 0 0 30px;
}

/* ---------- 七年轨道 ---------- */
.page-about .about-track {
  list-style: none;
  margin: 34px 0 0;
  padding: 0 0 0 18px;
  border-left: 1px solid var(--hair);
}

.page-about .about-stage + .about-stage {
  border-top: 1px dashed var(--hair-soft);
}

.page-about .about-stage__link {
  display: block;
  position: relative;
  padding: 22px 0 22px 22px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.22s ease;
}

.page-about .about-stage__link::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 29px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--red);
  box-sizing: content-box;
}

.page-about .about-stage__link:hover .about-stage__name {
  color: var(--red);
}

.page-about .about-stage__ver {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--gold-deep);
  background: rgba(212, 175, 55, 0.14);
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  padding: 3px 9px;
  margin-bottom: 11px;
}

.page-about .about-stage__name {
  display: block;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 8px;
  transition: color 0.2s ease;
}

.page-about .about-stage__desc {
  display: block;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--gray);
  max-width: 42em;
}

/* ---------- 团队与分工 ---------- */
.page-about .about-team__media {
  margin: 0 0 30px;
}

.page-about .about-filter {
  margin-bottom: 26px;
}

.page-about .about-roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .about-role {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 20px 24px;
  border: 1px solid var(--hair);
  border-top-width: 3px;
  border-radius: var(--radius);
  background: var(--paper-2);
  box-shadow: var(--shadow-card);
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}

.page-about .about-role:nth-child(1) { border-top-color: var(--red); }
.page-about .about-role:nth-child(2) { border-top-color: var(--gold); }
.page-about .about-role:nth-child(3) { border-top-color: var(--table); }

.page-about .about-role:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.page-about .about-role__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.page-about .about-role__count {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-about .about-role .card__title {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  margin: 0;
  line-height: 1.35;
}

.page-about .about-role .card__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-role__list {
  list-style: none;
  margin: 4px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--hair-soft);
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.page-about .about-role__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-about .about-role__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
}

/* ---------- 回放与说明 ---------- */
.page-about .about-rules {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hair);
}

.page-about .about-rule {
  display: flex;
  gap: 16px;
  padding: 25px 0 26px;
  border-bottom: 1px solid var(--hair);
}

.page-about .about-rule__num {
  flex: none;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold-deep);
}

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

.page-about .about-rule__title {
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.42;
  margin: 0 0 8px;
}

.page-about .about-rule__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.84;
  color: var(--ink-soft);
  max-width: 46em;
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

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

.page-about .about-eco__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hair);
}

.page-about .about-eco__item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 6px 16px;
  align-items: start;
  padding: 18px 0 19px;
  border-bottom: 1px solid var(--hair);
}

.page-about .about-eco__count {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.page-about .about-eco__item:nth-child(1) .about-eco__count { color: var(--red); }
.page-about .about-eco__item:nth-child(2) .about-eco__count { color: var(--gold-deep); }
.page-about .about-eco__item:nth-child(3) .about-eco__count { color: var(--table); }

.page-about .about-eco__title {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  margin: 0;
}

.page-about .about-eco__text {
  grid-column: 2;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--gray);
}

.page-about .about-eco__note {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray);
}

.page-about .about-eco__note a {
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid var(--red);
  padding-bottom: 1px;
}

.page-about .about-eco__note a:hover {
  color: var(--red-deep);
  border-bottom-color: var(--red-deep);
}

/* ---------- 收尾指引 ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  border-left: 4px solid var(--red);
  border-radius: var(--radius);
  padding: clamp(28px, 4.4vw, 50px);
}

.page-about .about-cta::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.22), transparent 68%);
  pointer-events: none;
}

.page-about .about-cta__title {
  position: relative;
  z-index: 1;
  font-family: var(--font-head);
  font-size: clamp(21px, 2.9vw, 30px);
  font-weight: 800;
  line-height: 1.36;
  margin: 0 0 12px;
}

.page-about .about-cta__text {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 15px;
  line-height: 1.84;
  color: rgba(246, 241, 231, 0.76);
  max-width: 40em;
}

.page-about .about-cta__links {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-about .about-cta__link {
  display: inline-flex;
  align-items: center;
  padding: 11px 20px;
  font-size: 15px;
  line-height: 1;
  color: var(--paper);
  text-decoration: none;
  border: 1px solid var(--hair-light);
  border-radius: var(--radius);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-about .about-cta__link:first-child {
  background: var(--red);
  border-color: var(--red);
}

.page-about .about-cta__link:hover,
.page-about .about-cta__link:focus-visible {
  background: rgba(196, 30, 58, 0.3);
  border-color: var(--red);
}

/* ---------- 宽屏 ---------- */
@media (min-width: 640px) {
  .page-about .about-open__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-shell {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: var(--about-gap);
  }

  .page-about .about-rail {
    position: sticky;
    top: 108px;
    padding-top: 16px;
  }

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

  .page-about .about-rail__link {
    padding: 10px 12px;
    background: transparent;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: 15px;
    white-space: normal;
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    border-left-color: var(--red);
    background: var(--red-wash);
  }

  .page-about .about-rail__foot {
    display: block;
    margin-top: 22px;
    padding-top: 16px;
    border-top: 1px solid var(--hair);
  }

  .page-about .about-rail__foot p {
    margin: 0;
    font-size: 12.5px;
    line-height: 1.6;
    color: var(--gray);
  }

  .page-about .about-rail__foot p.mono {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--gold-deep);
    margin-bottom: 5px;
  }

  .page-about .about-track {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid var(--hair);
  }

  .page-about .about-stage + .about-stage {
    border-top: 0;
    border-left: 1px dashed var(--hair-soft);
  }

  .page-about .about-stage__link {
    padding: 36px 24px 24px;
    height: 100%;
  }

  .page-about .about-stage__link::before {
    left: 24px;
    top: -6px;
  }

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

  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    gap: 42px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-open__facts {
    max-width: 880px;
  }
}

@media (max-width: 480px) {
  .page-about .about-h1 {
    max-width: none;
  }

  .page-about .about-h2 {
    max-width: none;
  }

  .page-about .about-eco__item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 4px 12px;
  }

  .page-about .about-cta__link {
    flex: 1 1 100%;
    justify-content: center;
  }
}