/* ============ 品牌总览 / about ============ */
.page-about {
  --about-rail: 168px;
  --about-line: rgba(232, 180, 90, .42);
  --about-body: rgba(207, 219, 232, .86);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(26px, 5.5vw, 60px) 0 clamp(30px, 5vw, 54px);
  background-image: repeating-linear-gradient(115deg, rgba(232, 180, 90, .07) 0 1px, transparent 1px 64px);
  border-bottom: 1px solid rgba(159, 179, 200, .16);
}

.page-about .about-hero .eyebrow {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .3em;
  color: var(--cyan);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 7.6vw, 4.3rem);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--glass);
  max-width: 20ch;
}

.page-about .about-hero__accent {
  display: block;
  color: var(--gold);
}

.page-about .about-hero__lede {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 60ch;
  color: var(--about-body);
  font-size: clamp(.98rem, 2.4vw, 1.1rem);
  line-height: 1.85;
}

/* 首屏数字条 */
.page-about .about-stats {
  list-style: none;
  margin: clamp(26px, 4.5vw, 40px) 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(159, 179, 200, .2);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-stats li {
  padding: 16px 14px 18px;
  background: var(--midnight);
}

.page-about .about-stats b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4.4vw, 2rem);
  line-height: 1;
  color: var(--gold);
}

.page-about .about-stats span {
  display: block;
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--mist);
}

/* ---------- 主体网格：年份索引 + 叙事 ---------- */
.page-about .about-layout {
  display: grid;
  gap: clamp(26px, 5vw, 48px);
  padding: clamp(32px, 6vw, 68px) 0 clamp(48px, 8vw, 92px);
  align-items: start;
}

.page-about .about-rail {
  padding: 14px 12px;
  border: 1px solid var(--glass-brd);
  border-radius: var(--r-md);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-about .about-rail__title {
  margin: 0 0 12px;
  font-size: .66rem;
  letter-spacing: .24em;
  color: var(--mist);
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
}

.page-about .about-rail__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .06em;
  white-space: nowrap;
  color: var(--mist);
  text-decoration: none;
  transition: color .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
}

.page-about .about-rail__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-deep);
  transition: background .22s var(--ease);
}

.page-about .about-rail__list a:hover,
.page-about .about-rail__list a:focus-visible {
  color: var(--night);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about .about-rail__list a:hover .about-rail__dot,
.page-about .about-rail__list a:focus-visible .about-rail__dot {
  background: var(--night);
}

/* ---------- 区块骨架 ---------- */
.page-about .about-block {
  padding-bottom: clamp(38px, 7vw, 76px);
}

.page-about .about-block + .about-block {
  padding-top: clamp(30px, 5vw, 52px);
  border-top: 1px solid rgba(159, 179, 200, .16);
}

.page-about .about-block__head {
  margin-bottom: clamp(16px, 3vw, 26px);
}

.page-about .about-block__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 8vw, 4.2rem);
  line-height: .82;
  letter-spacing: -.03em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(232, 180, 90, .5);
}

@supports not (-webkit-text-stroke: 1px #000) {
  .page-about .about-block__num { color: rgba(232, 180, 90, .38); }
}

.page-about .about-block__title {
  margin: .35em 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.8vw, 2.4rem);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--glass);
  max-width: 24ch;
}

.page-about .about-text {
  margin: 0 0 1em;
  color: var(--about-body);
  font-size: clamp(.95rem, 2.3vw, 1.02rem);
  line-height: 1.9;
}

.page-about .about-lead {
  margin-bottom: clamp(20px, 3.5vw, 30px);
  max-width: 56ch;
  color: var(--mist);
}

/* ---------- 图文双栏 ---------- */
.page-about .about-split {
  display: grid;
  gap: clamp(20px, 3.5vw, 34px);
  align-items: start;
}

.page-about .about-split__text > .about-text:last-child {
  margin-bottom: 0;
}

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

.page-about .about-figure .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-md);
}

.page-about .about-figure--team {
  margin-top: clamp(24px, 4vw, 36px);
}

.page-about .about-figure--map .media__img {
  border: 1px solid var(--glass-brd);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 4px 0 4px 28px;
  position: relative;
  display: grid;
  gap: clamp(22px, 4vw, 36px);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--gold), var(--cyan) 58%, var(--magenta));
  opacity: .55;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: clamp(0px, 1.5vw, 12px);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: calc(clamp(0px, 1.5vw, 12px) * -1 - 30px);
  top: 10px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(232, 180, 90, .1);
}

.page-about .about-timeline__year {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 11px;
  border: 1px solid rgba(232, 180, 90, .45);
  border-radius: 999px;
  background: rgba(232, 180, 90, .1);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-about .about-timeline__title {
  margin: 0 0 .55em;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1.04rem, 2.8vw, 1.28rem);
  line-height: 1.4;
  color: var(--glass);
}

.page-about .about-timeline__item .about-text {
  margin-bottom: 0;
  max-width: 60ch;
}

/* ---------- 团队标签页 ---------- */
.page-about .about-tabs {
  margin-top: clamp(4px, 1vw, 10px);
}

.page-about .about-tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(18px, 3vw, 26px);
}

.page-about .about-tabs .tab {
  padding: 9px 17px;
  border: 1px solid var(--glass-brd);
  border-radius: 999px;
  background: transparent;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: .77rem;
  letter-spacing: .08em;
  cursor: pointer;
  transition: color .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
}

.page-about .about-tabs .tab:hover {
  color: var(--glass);
  border-color: rgba(47, 230, 200, .5);
}

.page-about .about-tabs .tab[aria-selected="true"] {
  color: var(--night);
  background: var(--gold);
  border-color: var(--gold);
}

.page-about .about-tabs .tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .about-tabs .tab-panel .about-text:last-child {
  margin-bottom: 0;
}

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

.page-about .about-mix__item {
  display: grid;
  gap: 6px;
  padding: 16px 16px 18px;
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(16, 38, 63, .7);
}

.page-about .about-mix__num {
  font-size: 1.5rem;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -.02em;
}

.page-about .about-mix__label {
  font-weight: 700;
  font-size: .95rem;
  color: var(--glass);
}

.page-about .about-mix__desc {
  font-size: .88rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 合作生态列表 ---------- */
.page-about .about-partner-list {
  margin: clamp(16px, 3vw, 24px) 0 0;
}

.page-about .about-partner-list .index-list__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.page-about .about-partner-list .index-list__item + .index-list__item {
  margin-top: 16px;
}

.page-about .about-partner-list__title {
  margin: 0 0 .3em;
  font-size: 1rem;
  color: var(--glass);
}

.page-about .about-partner-list .about-text {
  margin-bottom: 0;
  font-size: .9rem;
  line-height: 1.75;
}

/* ---------- 荣誉 ---------- */
.page-about .about-honor {
  margin-top: clamp(14px, 2.5vw, 22px);
}

.page-about .about-honor__card {
  padding: 20px 18px 22px;
  border-top: 2px solid var(--cyan);
}

.page-about .about-honor__card:nth-child(2) {
  border-top-color: var(--magenta);
}

.page-about .about-honor__name {
  margin: 0 0 .6em;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 3vw, 1.3rem);
  line-height: 1.3;
  color: var(--gold);
  letter-spacing: -.01em;
}

.page-about .about-honor__card .about-text {
  margin-bottom: 0;
  font-size: .92rem;
  line-height: 1.8;
}

.page-about .about-honor__note {
  margin: clamp(22px, 4vw, 34px) 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--gold-deep);
  max-width: 62ch;
  color: var(--mist);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding-top: clamp(28px, 5vw, 46px);
  border-top: 1px solid rgba(159, 179, 200, .16);
}

.page-about .about-next__title {
  margin: 0 0 .7em;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4.2vw, 2rem);
  line-height: 1.15;
  color: var(--glass);
}

.page-about .about-next .about-text {
  max-width: 58ch;
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

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

  .page-about .about-stats li {
    padding: 20px 18px 22px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    gap: clamp(26px, 4vw, 46px);
  }

  .page-about .about-split--side {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

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

@media (min-width: 1040px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--topbar-h) + 24px);
    padding: 18px 14px;
  }

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

  .page-about .about-rail__list a {
    width: 100%;
    border-radius: var(--r-sm);
  }

  .page-about .about-hero__title {
    max-width: 16ch;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: center;
  }
}
<<<END>>>