/* ================= 品牌档案 / about ================= */

.page-about {
  --about-v1: #1E2A4D;
  --about-v2: #332F78;
  --about-v3: #573FD0;
  --about-v4: var(--violet);
  --about-block: clamp(52px, 7vw, 104px);
  position: relative;
  color: var(--white);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding-top: 20px;
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--mist);
}
.page-about .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  transition: color .18s var(--ease);
}
.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--cyan);
}
.page-about .breadcrumbs__sep {
  margin: 0 .5em;
  color: var(--rail);
}

/* ---------- 通用区块节奏 ---------- */
.page-about .about-block {
  position: relative;
  padding-block: var(--about-block);
  border-top: 1px solid var(--rail);
}

.page-about .about-subhead {
  margin: 0 0 18px;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-about .about-timeline__lede,
.page-about .about-taxonomy__lede {
  max-width: 62ch;
  margin: 0 0 clamp(24px, 4vw, 40px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(28px, 5vw, 64px) clamp(44px, 6vw, 88px);
}
.page-about .about-hero__glow {
  position: absolute;
  top: -140px;
  right: -120px;
  width: min(520px, 62vw);
  aspect-ratio: 1;
  pointer-events: none;
}
.page-about .about-hero__glow--violet {
  top: auto;
  bottom: -170px;
  right: auto;
  left: -110px;
  width: min(400px, 48vw);
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
}

.page-about .about-hero__eyebrow {
  margin: 0;
  font-size: .76rem;
  letter-spacing: .24em;
  color: var(--cyan);
}

.page-about .about-hero__title {
  margin: .35em 0 .55em;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(2.1rem, 8.4vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-about .about-hero__lede {
  max-width: 46ch;
  margin: 0 0 clamp(24px, 4vw, 36px);
  color: var(--mist);
}

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

/* 首屏数字岛 */
.page-about .about-hero__stats {
  display: grid;
  gap: 1px;
  background: var(--rail);
  border: 1px solid var(--rail);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}
.page-about .about-stat {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  background: var(--night);
}
.page-about .about-stat__num {
  font-size: clamp(1.5rem, 4.4vw, 2.1rem);
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.page-about .about-stat__num sup {
  font-size: .55em;
  vertical-align: super;
}
.page-about .about-stat__label {
  font-size: .85rem;
  color: var(--mist);
}

/* ---------- 01 起点 ---------- */
.page-about .about-origin__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(20px, 3vw, 32px);
}
.page-about .about-origin__prose p {
  color: var(--mist);
}
.page-about .about-origin__side {
  padding-left: 18px;
  border-left: 1px solid var(--rail);
}
.page-about .about-origin__date {
  margin: 0;
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  font-weight: 600;
  line-height: 1;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}
.page-about .about-origin__side-label {
  margin: 10px 0 0;
  font-size: .85rem;
  color: var(--white);
}
.page-about .about-origin__rule {
  display: block;
  width: 48px;
  height: 1px;
  margin: 16px 0;
  background: var(--rail);
}
.page-about .about-origin__side-note {
  margin: 0;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 02 版本时间轴 ---------- */
.page-about .about-timeline__figure {
  margin: 0 0 clamp(32px, 5vw, 56px);
}
.page-about .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .media {
  border: 1px solid var(--rail);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}
.page-about .media__caption {
  padding: 10px 14px;
  font-size: .78rem;
  color: var(--mist);
  background: var(--night);
}

.page-about .about-timeline__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
}

/* 年份刻度 —— 移动端横向 */
.page-about .about-years {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}
.page-about .about-years__label {
  display: none;
}
.page-about .about-year {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: .84rem;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid var(--rail);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.page-about .about-year:hover,
.page-about .about-year:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: var(--rim);
}
.page-about .about-year__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--rail);
  transition: background .18s var(--ease);
}
.page-about .about-year:hover .about-year__dot,
.page-about .about-year:focus-visible .about-year__dot {
  background: var(--cyan);
}

/* 版本节点 */
.page-about .about-nodes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 3vw, 30px);
}
.page-about .about-node {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}
.page-about .about-node__mark {
  margin: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  background: var(--about-v1);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}
.page-about .about-node--v2 .about-node__mark { background: var(--about-v2); }
.page-about .about-node--v3 .about-node__mark { background: var(--about-v3); }
.page-about .about-node--v4 .about-node__mark { background: var(--about-v4); }

.page-about .about-node__fold {
  background: var(--night);
  border: 1px solid var(--rail);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}
.page-about .about-node__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  width: 100%;
  padding: 18px 20px;
  background: transparent;
  border: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.page-about .about-node__name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--white);
}
.page-about .about-node__year {
  margin-left: auto;
  font-size: .84rem;
  color: var(--amber);
}
.page-about .about-node__sign {
  color: var(--cyan);
  font-size: 1.1rem;
  line-height: 1;
}
.page-about .about-node__inner {
  padding: 0 20px 20px;
}
.page-about .about-node__inner p {
  margin: 0;
  max-width: 58ch;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--mist);
}
.page-about .about-node__list {
  margin: 14px 0 0;
  padding-left: 1.05em;
  font-size: .88rem;
  line-height: 1.85;
  color: var(--mist);
}
.page-about .about-node__list li {
  margin-bottom: 6px;
}

/* 折叠：JS 就绪时收起，无脚本时全部可见 */
.has-js .page-about .about-node__fold .fold__body { display: none; }
.has-js .page-about .about-node__fold.is-shown .fold__body,
.has-js .page-about .about-node__fold .fold__head[aria-expanded="true"] + .fold__body { display: block; }

/* ---------- 03 团队 ---------- */
.page-about .about-team__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  margin-bottom: clamp(32px, 5vw, 56px);
}
.page-about .about-team__text p {
  color: var(--mist);
}
.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-hive {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.page-about .about-hive__cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px 14px;
  text-align: center;
  background: var(--night);
  border: 1px solid var(--rail);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.page-about .about-hive__cell:hover {
  border-color: var(--cyan);
  background: var(--rim);
}
.page-about .about-hive__hex {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 64px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  background: linear-gradient(160deg, var(--violet), #372A85);
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
}
.page-about .about-hive__role {
  font-size: .92rem;
  font-weight: 700;
  color: var(--white);
}
.page-about .about-hive__desc {
  font-size: .76rem;
  line-height: 1.7;
  color: var(--mist);
}
.page-about .about-team__foot {
  margin: clamp(32px, 5vw, 48px) 0 0;
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--mist);
}

/* ---------- 04 内容分类 ---------- */
.page-about .about-taxonomy__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 44px);
}

.page-about .about-cats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}
.page-about .about-cat {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 12px 14px;
  background: var(--night);
  border: 1px solid var(--rail);
  transition: border-color .18s var(--ease), background .18s var(--ease);
}
.page-about .about-cat:hover,
.page-about .about-cat:focus-within {
  border-color: var(--cyan);
  background: var(--rim);
}
.page-about .about-cat__hex {
  flex: 0 0 auto;
  width: 24px;
  height: 28px;
  background: var(--rail);
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
  transition: background .18s var(--ease);
}
.page-about .about-cat:hover .about-cat__hex {
  background: var(--cyan);
}
.page-about .about-cat__name {
  font-size: .94rem;
  color: var(--white);
}
.page-about .about-cat__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--mist);
  transition: color .18s var(--ease);
}
.page-about .about-cat:hover .about-cat__meta {
  color: var(--amber);
}

.page-about .about-tags {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-tag-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--rail);
}
.page-about .about-tag-row:first-child {
  padding-top: 4px;
}
.page-about .about-tag-row p {
  margin: 0;
  font-size: .86rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-taxonomy__figure {
  margin: clamp(32px, 5vw, 56px) 0 0;
}

.page-about .about-flow {
  display: block;
  width: 100%;
  height: auto;
  margin-top: clamp(28px, 4vw, 44px);
}
.page-about .about-flow__box {
  fill: var(--night);
  stroke: var(--rail);
  stroke-width: 1;
}
.page-about .about-flow__box--accent {
  stroke: var(--cyan);
}
.page-about .about-flow__line {
  stroke: var(--rail);
  stroke-width: 1.5;
}
.page-about .about-flow__arrow {
  fill: var(--rail);
}
.page-about .about-flow__label {
  fill: var(--white);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
}
.page-about .about-flow__sub {
  fill: var(--mist);
  font-family: var(--font-mono);
  font-size: 11px;
}

/* ---------- 05 同步协作 ---------- */
.page-about .about-sync__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
}
.page-about .about-sync__lead {
  padding: 22px 22px 26px;
  background: var(--night);
  border: 1px solid var(--rail);
  border-left: 3px solid var(--cyan);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}
.page-about .about-sync__big {
  margin: 0;
  font-size: clamp(3rem, 13vw, 5rem);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.page-about .about-sync__big sup {
  font-size: .4em;
  vertical-align: super;
}
.page-about .about-sync__big-label {
  margin: 12px 0 0;
  font-size: .9rem;
  color: var(--white);
}
.page-about .about-sync__big-note {
  margin: 14px 0 0;
  font-size: .82rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-sync__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-sync__list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rail);
}
.page-about .about-sync__list li:first-child {
  padding-top: 2px;
}
.page-about .about-sync__key {
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--amber);
}
.page-about .about-sync__val {
  font-size: .9rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 06 老用户过渡 ---------- */
.page-about .about-legacy__card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
  padding: clamp(22px, 4vw, 40px);
  background: linear-gradient(155deg, var(--night), var(--void) 78%);
}
.page-about .about-legacy__days {
  margin: 0;
  font-size: clamp(2.6rem, 12vw, 4.4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}
.page-about .about-legacy__unit {
  font-family: var(--font-sans);
  font-size: .3em;
  margin-left: .18em;
  color: var(--mist);
}
.page-about .about-legacy__prose p {
  color: var(--mist);
}
.page-about .about-legacy__btn {
  justify-self: start;
}

/* ---------- 下一步 ---------- */
.page-about .about-next__title {
  margin: 0 0 clamp(24px, 4vw, 40px);
  font-size: clamp(1.4rem, 3.6vw, 2rem);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--white);
}
.page-about .about-next__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}
.page-about .about-next__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 24px;
  text-decoration: none;
  background: var(--night);
  border: 1px solid var(--rail);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: background .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  background: var(--rim);
  border-color: var(--cyan);
}
.page-about .about-next__num {
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--violet);
}
.page-about .about-next__name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
}
.page-about .about-next__desc {
  font-size: .85rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ================= 响应式 ================= */

@media (min-width: 640px) {
  .page-about .about-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-sync__list li {
    grid-template-columns: 104px minmax(0, 1fr);
    align-items: baseline;
    gap: 20px;
  }
  .page-about .about-next__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--gutter);
    align-items: start;
  }
  .page-about .about-hero__main {
    grid-column: 1 / span 7;
  }
  .page-about .about-hero__stats {
    grid-column: 9 / span 4;
  }
  .page-about .about-hero__title {
    font-size: clamp(2.8rem, 4.4vw, 4.4rem);
    transform: scaleX(.94);
    transform-origin: left center;
  }

  .page-about .about-origin__body {
    grid-template-columns: minmax(0, 1fr) 190px;
    align-items: start;
  }

  /* 左侧固定版本轴 + 右侧错位节点 */
  .page-about .about-timeline__split {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 64px);
    align-items: start;
  }
  .page-about .about-years {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--rail);
  }
  .page-about .about-years__label {
    display: block;
    padding: 0 0 16px;
    font-size: .68rem;
    letter-spacing: .2em;
    color: var(--rail);
  }
  .page-about .about-year {
    position: relative;
    border: 0;
    clip-path: none;
    padding: 13px 0 13px 16px;
    font-size: .88rem;
    background: transparent;
  }
  .page-about .about-year:hover,
  .page-about .about-year:focus-visible {
    background: transparent;
    color: var(--cyan);
  }
  .page-about .about-year__dot {
    position: absolute;
    left: -3px;
    top: 50%;
    transform: translateY(-50%);
  }
  .page-about .about-nodes {
    margin-right: 26px;
  }
  .page-about .about-node {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }
  .page-about .about-node--v2,
  .page-about .about-node--v4 {
    transform: translateX(26px);
  }

  .page-about .about-team__split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
  }
  .page-about .about-hive {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }
  .page-about .about-hive__cell:nth-child(even) {
    transform: translateY(30px);
  }

  .page-about .about-taxonomy__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-sync__grid {
    grid-template-columns: 320px minmax(0, 1fr);
    align-items: start;
  }
  .page-about .about-sync__lead {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-about .about-legacy__card {
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: center;
    column-gap: clamp(28px, 4vw, 56px);
  }
  .page-about .about-legacy__btn {
    grid-column: 2;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hive__cell {
    padding: 24px 16px;
  }
}

/* ================= 动效兼容 ================= */

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__title {
    transform: none;
  }
  .page-about .about-node--v2,
  .page-about .about-node--v4,
  .page-about .about-hive__cell:nth-child(even) {
    transform: none;
  }
  .page-about .about-year,
  .page-about .about-cat,
  .page-about .about-hive__cell,
  .page-about .about-next__card {
    transition-duration: .12s;
  }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</main>