/* ============ 品牌中心 /brand/ ============ */
.page-about {
  --about-rail-w: 236px;
  background: var(--ink);
  color: var(--body-text);
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about .media-frame {
  overflow: hidden;
  margin: 0;
}

.page-about .crumbs__sep {
  margin: 0 8px;
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 52px) 0 clamp(34px, 6vw, 62px);
  border-bottom: 2px solid var(--line);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(138, 92, 255, 0.18), transparent 62%),
    radial-gradient(90% 70% at 0% 100%, rgba(43, 227, 214, 0.1), transparent 66%),
    var(--ink);
}

.page-about .about-hero::after {
  content: "616";
  position: absolute;
  right: -0.04em;
  top: -0.2em;
  z-index: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(150px, 28vw, 360px);
  line-height: 0.78;
  letter-spacing: -0.07em;
  color: rgba(42, 46, 68, 0.5);
  pointer-events: none;
}

@supports ((-webkit-text-stroke: 1px black)) {
  .page-about .about-hero::after {
    color: transparent;
    -webkit-text-stroke: 2px rgba(42, 46, 68, 0.95);
  }
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__kicker {
  margin: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 7vw, 86px);
  line-height: 1.03;
  letter-spacing: -0.03em;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--cyan);
}

.page-about .about-hero__lede {
  margin: 22px 0 0;
  max-width: 40em;
  font-size: clamp(16px, 1.6vw, 18.5px);
  line-height: 1.8;
  color: var(--body-text);
}

.page-about .about-hero__stats {
  margin-top: clamp(28px, 4vw, 44px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 2px solid var(--line);
  border-left: 2px solid var(--line);
}

.page-about .about-hero__stat {
  padding: 16px 14px 18px;
  border-right: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
  background: rgba(18, 20, 31, 0.72);
}

.page-about .about-hero__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 3vw, 34px);
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .about-hero__stat:nth-child(2) .about-hero__num { color: var(--violet); }
.page-about .about-hero__stat:nth-child(3) .about-hero__num { color: var(--orange); }
.page-about .about-hero__stat:nth-child(4) .about-hero__num { color: var(--green); }

.page-about .about-hero__cap {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 章节索引 + 正文 ---------- */
.page-about .about-layout {
  padding-top: clamp(34px, 5vw, 62px);
  padding-bottom: clamp(40px, 6vw, 76px);
}

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

.page-about .about-rail {
  padding-bottom: 18px;
  margin-bottom: clamp(28px, 4vw, 44px);
  border-bottom: 2px solid var(--line);
}

.page-about .about-rail__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--violet);
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-rail__list li {
  flex: 0 0 auto;
}

.page-about .about-rail__list a {
  display: block;
  white-space: nowrap;
  padding: 7px 12px;
  border: 2px solid var(--line);
  background: var(--ink-2);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

.page-about .about-rail__cta {
  display: inline-block;
  margin-top: 16px;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 2px solid var(--cyan);
}

/* ---------- 章节通用 ---------- */
.page-about .about-sec {
  scroll-margin-top: 110px;
}

.page-about .about-sec + .about-sec {
  margin-top: clamp(34px, 5vw, 58px);
  padding-top: clamp(30px, 4vw, 50px);
  border-top: 2px solid var(--line);
}

.page-about .about-sec__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--violet);
}

.page-about .about-sec__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-sec__title--outline {
  color: var(--paper);
}

@supports ((-webkit-text-stroke: 1px black)) {
  .page-about .about-sec__title--outline {
    color: transparent;
    -webkit-text-stroke: 2px var(--violet);
  }
}

.page-about .about-sec__lede {
  margin: 16px 0 0;
  max-width: 38em;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--body-text);
}

.page-about .about-sec__body {
  margin-top: 20px;
}

.page-about .about-sec__body p {
  margin: 0 0 16px;
  max-width: 38em;
  line-height: 1.8;
}

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

/* ---------- 01 品牌主张 ---------- */
.page-about .about-points {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-points__item {
  padding: 18px 20px;
  border-left: 6px solid var(--line);
  background: var(--ink-2);
}

.page-about .about-points__item--cyan { border-left-color: var(--cyan); }
.page-about .about-points__item--violet { border-left-color: var(--violet); }
.page-about .about-points__item--orange { border-left-color: var(--orange); }

.page-about .about-points__key {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  color: var(--paper);
}

.page-about .about-points__item p {
  margin: 0;
  max-width: 38em;
  line-height: 1.75;
  color: var(--body-text);
}

/* ---------- 02 时间轴 ---------- */
.page-about .about-sec--band {
  padding: clamp(24px, 4vw, 40px) clamp(18px, 3vw, 34px) clamp(28px, 4vw, 44px);
  background: var(--ink-2);
  border: 2px solid var(--line);
}

.page-about .about-band__figure {
  margin-top: 24px;
  border: 2px solid var(--line);
}

.page-about .tl-wrap {
  margin-top: 30px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 10px;
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(7, minmax(190px, 1fr));
  min-width: 100%;
}

.page-about .tl__item {
  position: relative;
  padding: 36px 22px 0 0;
  border-top: 2px solid var(--line);
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 0;
  width: 14px;
  height: 14px;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  background: var(--ink-2);
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-about .tl__item:hover::before,
.page-about .tl__item:focus-within::before {
  background: var(--cyan);
  transform: scale(1.15);
}

.page-about .tl__item--now {
  border-top-color: var(--cyan);
}

.page-about .tl__item--now::before {
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(43, 227, 214, 0.18);
}

.page-about .tl__year {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-about .tl__item--now .tl__year {
  color: var(--paper);
}

.page-about .tl__title {
  margin: 8px 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .tl__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 03 团队 ---------- */
.page-about .about-figure {
  margin-top: 26px;
  border: 2px solid var(--line);
}

.page-about .team-bar {
  display: flex;
  margin-top: 28px;
  height: 38px;
  border: 2px solid var(--line);
  background: var(--ink-2);
  overflow: hidden;
}

.page-about .team-bar__seg {
  display: block;
  height: 100%;
  min-width: 0;
  border-right: 2px solid var(--ink);
}

.page-about .team-bar__seg:last-child {
  border-right: 0;
}

.page-about .team-bar__seg--edit { flex: 7 1 0; background: linear-gradient(180deg, var(--violet), #6a41d8); }
.page-about .team-bar__seg--data { flex: 5 1 0; background: linear-gradient(180deg, var(--cyan), #17a79c); }
.page-about .team-bar__seg--fe { flex: 4 1 0; background: linear-gradient(180deg, var(--orange), #d2551a); }
.page-about .team-bar__seg--cs { flex: 2 1 0; background: linear-gradient(180deg, var(--green), #23a463); }

.page-about .team-legend {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .team-legend__item {
  padding-left: 14px;
  border-left: 4px solid var(--line);
}

.page-about .team-legend__item--edit { border-left-color: var(--violet); }
.page-about .team-legend__item--data { border-left-color: var(--cyan); }
.page-about .team-legend__item--fe { border-left-color: var(--orange); }
.page-about .team-legend__item--cs { border-left-color: var(--green); }

.page-about .team-legend__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .team-legend__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--paper);
}

.page-about .team-legend__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  color: var(--muted);
}

.page-about .team-legend__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--body-text);
}

/* ---------- 04 结论怎么来的 ---------- */
.page-about .about-steps {
  margin-top: 26px;
}

.page-about .about-verify {
  margin-top: 30px;
  gap: clamp(20px, 3vw, 36px);
}

.page-about .about-verify__col h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-check {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-check li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--body-text);
}

.page-about .about-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 9px;
  height: 9px;
  background: var(--cyan);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-about .about-verify__col p {
  margin: 18px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--body-text);
}

/* ---------- 05 服务范围 ---------- */
.page-about .about-nums {
  margin-top: 26px;
}

.page-about .about-nums__note {
  margin: 20px 0 0;
  max-width: 42em;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 06 合作生态 ---------- */
.page-about .about-partners {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-partners li {
  padding: 18px 18px 20px;
  border: 2px solid var(--line);
  background: var(--ink-2);
  box-shadow: var(--shadow-hard);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-partners li:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 var(--line);
  border-color: var(--violet);
}

.page-about .about-partners__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 30px;
  letter-spacing: -0.02em;
  color: var(--orange);
}

.page-about .about-partners__name {
  display: block;
  margin-top: 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--paper);
}

.page-about .about-partners__desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--body-text);
}

.page-about .about-honor {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border: 2px solid var(--line);
  border-left: 6px solid var(--green);
  background: rgba(56, 224, 139, 0.06);
}

.page-about .about-honor p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
}

.page-about .about-link {
  display: inline-block;
  margin-top: 24px;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 2px solid var(--cyan);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--orange);
}

.page-about .about-link--inline {
  margin-top: 0;
  font-size: 14px;
}

/* ---------- 07 对外承诺 ---------- */
.page-about .about-pledges {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-about .about-pledges li {
  display: flex;
  gap: 14px;
}

.page-about .about-pledges__mark {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  color: var(--ink);
  background: var(--cyan);
  clip-path: polygon(22% 0, 100% 0, 78% 100%, 0 100%);
}

.page-about .about-pledges strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--paper);
}

.page-about .about-pledges p {
  margin: 7px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--body-text);
}

.page-about .about-cta {
  margin-top: 34px;
  padding: clamp(20px, 3vw, 30px);
  border: 2px solid var(--line);
  border-top: 6px solid var(--violet);
  background: var(--ink-2);
}

.page-about .about-cta p {
  margin: 0;
  max-width: 42em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--body-text);
}

.page-about .about-cta__actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

  .page-about .team-legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 28px;
  }

  .page-about .about-partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-pledges {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 30px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    display: flex;
    align-items: flex-start;
    gap: clamp(32px, 4vw, 64px);
  }

  .page-about .about-main {
    flex: 1 1 auto;
    min-width: 0;
  }

  .page-about .about-rail {
    flex: 0 0 var(--about-rail-w);
    position: sticky;
    top: 104px;
    padding: 4px 0 0 18px;
    margin-bottom: 0;
    border-bottom: 0;
    border-left: 2px solid var(--line);
  }

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

  .page-about .about-rail__list a {
    margin-left: -20px;
    padding: 9px 0 9px 12px;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
    font-size: 12.5px;
    white-space: normal;
  }

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

  .page-about .about-rail__cta {
    margin-top: 22px;
  }

  .page-about .about-sec--band {
    margin-left: -2px;
  }
}

@media (max-width: 560px) {
  .page-about .about-hero::after {
    font-size: 160px;
    top: -0.14em;
  }

  .page-about .about-sec--band {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-about .tl {
    grid-template-columns: repeat(7, minmax(168px, 1fr));
  }

  .page-about .about-hero__stat {
    padding: 14px 12px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-points__item,
  .page-about .tl__item::before,
  .page-about .about-partners li,
  .page-about .about-link {
    transition: none;
  }

  .page-about .about-partners li:hover {
    transform: none;
  }
}
<<<END>>>