/* ===== 品牌自述 · page-about ===== */
.page-about {
  --about-axis: 176px;
  --about-ch-gap: clamp(24px, 3.6vw, 46px);
  display: block;
  background: var(--vw-ink);
  color: var(--vw-bone);
  padding-bottom: clamp(40px, 7vw, 88px);
}

/* 顶部上下文行 */
.page-about .about-topline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: clamp(96px, 13vw, 140px);
  padding-bottom: 16px;
  border-bottom: var(--vw-line) solid var(--vw-edge);
}
.page-about .about-topline .vw-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
}
.page-about .about-topline .vw-breadcrumb__sep {
  color: var(--vw-edge);
  font-family: var(--vw-font-mono);
}
.page-about .about-topline .vw-breadcrumb__link {
  color: var(--vw-mist);
  text-decoration: none;
}
.page-about .about-topline .vw-breadcrumb__link:hover,
.page-about .about-topline .vw-breadcrumb__link:focus-visible {
  color: var(--vw-cyan);
}
.page-about .about-topline .vw-breadcrumb__current {
  color: var(--vw-bone);
}
.page-about .about-topline__meta {
  margin: 0;
  color: var(--vw-mist);
  letter-spacing: .1em;
  font-size: 12px;
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  border-bottom: var(--vw-line) solid var(--vw-edge);
  background:
    radial-gradient(120% 90% at 88% 10%, rgba(61, 240, 200, .10) 0%, rgba(7, 17, 14, 0) 62%),
    linear-gradient(180deg, var(--vw-layer) 0%, var(--vw-ink) 100%);
  padding: clamp(34px, 5.4vw, 68px) 0 clamp(34px, 5.4vw, 64px);
}
.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}
.page-about .about-hero__lead .vw-kicker {
  display: block;
  margin: 0 0 14px;
}
.page-about .about-hero__title {
  margin: 0;
  font-family: var(--vw-font-narrow);
  font-weight: 900;
  font-size: clamp(32px, 6.6vw, 58px);
  line-height: 1.05;
  letter-spacing: -.022em;
  text-align: left;
}
.page-about .about-hero__lede {
  margin: clamp(16px, 2.2vw, 22px) 0 0;
  max-width: 62ch;
  color: var(--vw-bone);
  font-size: 16.5px;
  line-height: 1.78;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--vw-line);
  background: var(--vw-edge);
  border: var(--vw-line) solid var(--vw-edge);
  box-shadow: var(--vw-shadow);
}
.page-about .about-fact {
  background: var(--vw-layer);
  padding: 16px 14px 18px;
  min-height: 96px;
}
.page-about .about-fact__v {
  margin: 0;
  font-family: var(--vw-font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 5.4vw, 38px);
  line-height: 1;
  color: var(--vw-cyan);
  letter-spacing: -.01em;
}
.page-about .about-fact__v--gold {
  color: var(--vw-gold);
}
.page-about .about-fact__k {
  margin: 10px 0 0;
  color: var(--vw-mist);
  font-size: 12.5px;
  letter-spacing: .04em;
}

/* 长卷骨架 */
.page-about .about-sheet {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-ch-gap);
  padding-top: clamp(30px, 4.6vw, 54px);
}
.page-about .about-flow {
  min-width: 0;
}

/* 左侧章节刻度 */
.page-about .about-rail {
  display: none;
}
.page-about .about-rail__title {
  margin: 0 0 16px;
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--vw-cyan-2);
}
.page-about .about-rail__list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-rail__list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--vw-cyan) 0%, var(--vw-mid) 42%, var(--vw-edge) 100%);
}
.page-about .about-rail__link {
  position: relative;
  display: block;
  padding: 7px 0 7px 24px;
  color: var(--vw-mist);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.5;
  transition: color .2s var(--vw-ease);
}
.page-about .about-rail__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  background: var(--vw-ink);
  border: 2px solid var(--vw-edge);
  transition: background .2s var(--vw-ease), border-color .2s var(--vw-ease);
}
.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--vw-cyan);
}
.page-about .about-rail__link:hover::before,
.page-about .about-rail__link:focus-visible::before {
  background: var(--vw-cyan);
  border-color: var(--vw-cyan);
}

/* 章节 */
.page-about .about-ch {
  scroll-margin-top: 110px;
  padding-top: clamp(24px, 3.4vw, 38px);
  padding-bottom: clamp(26px, 4vw, 46px);
  border-top: var(--vw-line) solid var(--vw-edge);
}
.page-about .about-ch:first-child {
  border-top: 0;
  padding-top: 0;
}
.page-about .about-ch--end {
  border-bottom: 0;
}
.page-about .about-ch__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: clamp(18px, 2.6vw, 28px);
}
.page-about .about-ch__no {
  flex: none;
  font-family: var(--vw-font-mono);
  font-weight: 700;
  font-size: 12.5px;
  line-height: 1;
  padding: 5px 8px;
  color: var(--vw-ink);
  background: var(--vw-cyan);
}
.page-about .about-ch__head .vw-h2 {
  margin: 0;
  font-family: var(--vw-font-narrow);
  font-weight: 900;
  font-size: clamp(23px, 3.6vw, 34px);
  line-height: 1.16;
  letter-spacing: -.015em;
}
.page-about .about-ch__line {
  flex: 1 1 40px;
  min-width: 30px;
  height: 2px;
  align-self: center;
  background: linear-gradient(90deg, var(--vw-cyan) 0%, rgba(61, 240, 200, 0) 100%);
}

.page-about .about-lede {
  margin: 0 0 clamp(20px, 2.8vw, 30px);
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--vw-bone);
}
.page-about .about-cols__text p {
  margin: 0 0 16px;
  font-size: 16.5px;
  line-height: 1.78;
}
.page-about .about-cols__text p:last-child {
  margin-bottom: 0;
}
.page-about .about-aside {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--vw-mid);
  color: var(--vw-mist);
  font-size: 14.5px;
  line-height: 1.8;
}
.page-about .vw-link {
  color: var(--vw-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 240, 200, .45);
}
.page-about .vw-link:hover,
.page-about .vw-link:focus-visible {
  color: var(--vw-gold);
  border-bottom-color: var(--vw-gold);
}

/* 非对称分栏 */
.page-about .about-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 40px);
  align-items: start;
}

/* 要点清单 */
.page-about .about-points {
  list-style: none;
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  padding: 0;
  border-top: var(--vw-line) solid var(--vw-edge);
}
.page-about .about-points li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 12px 0;
  border-bottom: var(--vw-line) solid var(--vw-edge);
  font-size: 15px;
  line-height: 1.7;
}
.page-about .about-points__k {
  color: var(--vw-cyan-2);
  font-size: 12px;
  letter-spacing: .1em;
}

/* 图片 */
.page-about .about-fig {
  margin: 0;
  border: var(--vw-line) solid var(--vw-edge);
  background: var(--vw-layer);
  box-shadow: var(--vw-shadow-sm);
}
.page-about .about-fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-fig .vw-media__caption {
  margin: 0;
  padding: 12px 14px;
  border-top: var(--vw-line) solid var(--vw-edge);
  color: var(--vw-mist);
  font-size: 13px;
  line-height: 1.65;
}
.page-about .about-fig--flow {
  margin-top: clamp(24px, 3.4vw, 40px);
}

/* 四步方法 */
.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: var(--vw-line) solid var(--vw-edge);
}
.page-about .about-step {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px) clamp(16px, 2.2vw, 24px);
  border-bottom: var(--vw-line) solid var(--vw-edge);
  background: var(--vw-layer);
}
.page-about .about-step:nth-child(even) {
  background: var(--vw-ink);
}
.page-about .about-step__no {
  margin: 0 0 10px;
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--vw-cyan-2);
}
.page-about .about-step__title {
  margin: 0 0 10px;
  font-family: var(--vw-font-narrow);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.24;
  letter-spacing: -.01em;
}
.page-about .about-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
}
.page-about .about-step__out {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 2px solid var(--vw-edge);
  color: var(--vw-gold);
  font-size: 12.5px;
  letter-spacing: .06em;
}

/* 版本时间轴 */
.page-about .about-tl {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--vw-cyan-2) 0%, var(--vw-mid) 38%, var(--vw-edge) 100%);
}
.page-about .about-tl__item {
  position: relative;
  padding: 0 0 clamp(22px, 3vw, 36px) 36px;
}
.page-about .about-tl__item:last-child {
  padding-bottom: 0;
}
.page-about .about-tl__item .vw-tick__mark {
  position: absolute;
  left: 0;
  top: 6px;
  display: block;
  width: 16px;
  height: 16px;
  background: var(--vw-ink);
  border: 2px solid var(--vw-mid);
  transition: background .2s var(--vw-ease), border-color .2s var(--vw-ease);
}
.page-about .about-tl__item:hover .vw-tick__mark,
.page-about .about-tl__item:focus-within .vw-tick__mark {
  border-color: var(--vw-cyan);
}
.page-about .about-tl__item[data-state="current"] .vw-tick__mark {
  background: var(--vw-cyan);
  border-color: var(--vw-cyan);
  box-shadow: 0 0 0 5px rgba(61, 240, 200, .12);
}
.page-about .about-tl__label {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--vw-mist);
}
.page-about .about-tl__item[data-state="current"] .about-tl__label {
  color: var(--vw-cyan);
}
.page-about .about-tl__title {
  margin: 0 0 8px;
  font-family: var(--vw-font-narrow);
  font-weight: 900;
  font-size: clamp(18px, 2.4vw, 22px);
  line-height: 1.28;
  letter-spacing: -.01em;
}
.page-about .about-tl__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.76;
  color: var(--vw-bone);
}

/* 团队分工 */
.page-about .about-team {
  list-style: none;
  margin: clamp(16px, 2.2vw, 24px) 0 0;
  padding: 0;
}
.page-about .about-team__row {
  padding: 14px 0 16px;
  border-bottom: var(--vw-line) solid var(--vw-edge);
}
.page-about .about-team__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.page-about .about-team__name {
  font-size: 15.5px;
  font-weight: 600;
}
.page-about .about-team__num {
  font-size: 22px;
  font-weight: 700;
  color: var(--vw-gold);
  line-height: 1;
}
.page-about .about-team__track {
  display: block;
  margin: 10px 0 10px;
  height: 8px;
  background: var(--vw-forest);
  border: 1px solid var(--vw-edge);
}
.page-about .about-team__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--vw-cyan-2) 0%, var(--vw-cyan) 100%);
}
.page-about .about-team__row:nth-child(1) .about-team__fill { width: 100%; }
.page-about .about-team__row:nth-child(2) .about-team__fill { width: 71%; }
.page-about .about-team__row:nth-child(3) .about-team__fill { width: 57%; }
.page-about .about-team__row:nth-child(4) .about-team__fill { width: 29%; }
.page-about .about-team__desc {
  margin: 0;
  color: var(--vw-mist);
  font-size: 14px;
  line-height: 1.7;
}

/* 口径表 */
.page-about .about-table-scroll {
  overflow-x: auto;
  border: var(--vw-line) solid var(--vw-edge);
  background: var(--vw-layer);
}
.page-about .about-table__cap {
  padding: 12px 16px;
  text-align: left;
  color: var(--vw-mist);
  font-size: 12.5px;
  letter-spacing: .08em;
  border-bottom: var(--vw-line) solid var(--vw-edge);
}
.page-about .about-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}
.page-about .about-table th,
.page-about .about-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  font-size: 14.5px;
  line-height: 1.72;
  border-bottom: 1px solid var(--vw-edge);
}
.page-about .about-table thead th {
  color: var(--vw-cyan-2);
  font-family: var(--vw-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  font-weight: 700;
  background: var(--vw-forest);
}
.page-about .about-table tbody th {
  color: var(--vw-gold);
  font-weight: 700;
  white-space: nowrap;
}
.page-about .about-table tbody tr:last-child th,
.page-about .about-table tbody tr:last-child td {
  border-bottom: 0;
}

/* 口径提示块 */
.page-about .about-callout {
  margin-top: clamp(20px, 2.8vw, 32px);
  padding: clamp(18px, 2.4vw, 26px);
  border: var(--vw-line) solid var(--vw-edge);
  border-left: 6px solid var(--vw-gold);
  background: var(--vw-layer);
}
.page-about .about-callout__k {
  margin: 0 0 10px;
  color: var(--vw-gold);
  font-size: 12px;
  letter-spacing: .12em;
}
.page-about .about-callout p:last-child {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
}

/* 合规信息 */
.page-about .about-legal {
  border-top: var(--vw-line) solid var(--vw-edge);
}
.page-about .about-legal__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 13px 0;
  border-bottom: var(--vw-line) solid var(--vw-edge);
}
.page-about .about-legal__k {
  color: var(--vw-mist);
  font-size: 12px;
  letter-spacing: .1em;
}
.page-about .about-legal__v {
  font-size: 15.5px;
  line-height: 1.7;
  word-break: break-word;
}

/* 下一站 */
.page-about .about-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--vw-line);
  background: var(--vw-edge);
  border: var(--vw-line) solid var(--vw-edge);
}
.page-about .about-next__card {
  display: block;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--vw-layer);
  color: var(--vw-bone);
  text-decoration: none;
  transition: background .2s var(--vw-ease);
}
.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  background: var(--vw-forest);
  outline: 2px solid var(--vw-cyan);
  outline-offset: -2px;
}
.page-about .about-next__no {
  display: block;
  margin-bottom: 10px;
  color: var(--vw-cyan);
  font-size: 12px;
  letter-spacing: .12em;
}
.page-about .about-next__title {
  display: block;
  font-size: 15.5px;
  line-height: 1.7;
}

/* 显现动效 */
.page-about [data-reveal] {
  opacity: 1;
}
.page-about .vw-js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .6s var(--vw-ease), transform .6s var(--vw-ease);
}
.page-about .vw-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-about .vw-js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-about .about-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-left: var(--vw-line) solid var(--vw-edge);
  }
  .page-about .about-step {
    border-right: var(--vw-line) solid var(--vw-edge);
  }
  .page-about .about-points li {
    grid-template-columns: 110px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }
  .page-about .about-legal__row {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: baseline;
    gap: 20px;
  }
  .page-about .about-next {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 桌面：左刻度 + 右叙事 */
@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
  }
  .page-about .about-cols--7-5 {
    grid-template-columns: 7fr 5fr;
  }
  .page-about .about-cols--5-7 {
    grid-template-columns: 5fr 7fr;
  }
}

@media (min-width: 1040px) {
  .page-about .about-sheet {
    grid-template-columns: var(--about-axis) minmax(0, 1fr);
    gap: clamp(30px, 4vw, 56px);
  }
  .page-about .about-rail {
    display: block;
    position: sticky;
    top: 112px;
    align-self: start;
  }
  .page-about .about-cols--5-7 .about-cols__text {
    padding-right: 6px;
  }
}
<<<END>>>