/* ===== 品牌志 /profile/ ===== */

.page-about {
  --ab-sticky: 96px;
  --ab-rule: rgba(216, 220, 227, 0.14);
  --ab-rule-light: rgba(11, 11, 13, 0.12);
}

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  position: relative;
  overflow: hidden;
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  top: -32%;
  right: -14%;
  width: min(760px, 80vw);
  height: min(760px, 80vw);
  background: radial-gradient(circle at 42% 42%,
      rgba(201, 162, 39, 0.16),
      rgba(108, 62, 245, 0.08) 46%,
      transparent 68%);
  pointer-events: none;
}

.page-about .ab-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 5vw, 40px);
  margin-top: clamp(28px, 6vw, 56px);
}

.page-about .ab-hero__side {
  border-left: 1px solid var(--gold);
  padding-left: 16px;
}

.page-about .ab-hero__tag {
  margin: 0 0 10px;
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  color: var(--gold);
}

.page-about .ab-hero__span {
  margin: 0;
  font-size: 0.9rem;
  color: var(--silver);
  opacity: 0.75;
}

.page-about .ab-hero__body .h1 {
  margin-bottom: clamp(18px, 3vw, 26px);
}

.page-about .ab-hero__body .lede {
  max-width: 44em;
  margin-bottom: 16px;
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 34px);
}

/* ---------- 首屏数据带 ---------- */

.page-about .ab-figures {
  list-style: none;
  margin: clamp(44px, 8vw, 88px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ab-rule);
  border: 1px solid var(--ab-rule);
}

.page-about .ab-figures__item {
  background: var(--ink);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .ab-figures__value {
  font-size: clamp(1.35rem, 4vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--gold);
  line-height: 1;
}

.page-about .ab-figures__label {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--silver);
  opacity: 0.72;
}

/* ---------- 时间线骨架 ---------- */

.page-about .ab-line {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-node {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 3vw, 28px);
  padding-bottom: clamp(44px, 7vw, 88px);
  border-bottom: 1px solid var(--ab-rule);
  scroll-margin-top: var(--ab-sticky);
}

.page-about .ab-line > .ab-node + .ab-node {
  padding-top: clamp(44px, 7vw, 88px);
}

.page-about .ab-line > .ab-node:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .ab-node__side {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid var(--gold);
  padding-top: 14px;
}

.page-about .ab-node__num {
  font-size: clamp(1.4rem, 5vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--gold);
}

.page-about .ab-node__stage {
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--silver);
  opacity: 0.72;
}

.page-about .ab-node__body .h2 {
  margin-bottom: clamp(16px, 2.5vw, 24px);
}

/* ---------- 图片 ---------- */

.page-about .ab-figure {
  margin: clamp(24px, 4vw, 36px) 0 0;
  border: 1px solid var(--ab-rule);
  overflow: hidden;
}

.page-about .ab-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .ab-figure .media__caption {
  padding: 12px 16px 14px;
  font-size: 0.82rem;
  color: var(--silver);
  opacity: 0.74;
}

/* ---------- 六个系列 ---------- */

.page-about .ab-series {
  list-style: none;
  margin: clamp(22px, 3.5vw, 32px) 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--ab-rule);
  border: 1px solid var(--ab-rule);
}

.page-about .ab-series > li {
  background: var(--ink);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  transition: background var(--dur) var(--ease);
}

.page-about .ab-series > li:hover {
  background: var(--iron);
}

.page-about .ab-series__name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .ab-series__role {
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--silver);
  opacity: 0.8;
}

/* ---------- 工艺流程带 ---------- */

.page-about .ab-flow {
  list-style: none;
  margin: clamp(26px, 4vw, 36px) 0 clamp(28px, 4vw, 40px);
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  counter-reset: abflow;
}

.page-about .ab-flow > li {
  counter-increment: abflow;
  position: relative;
  flex: 1 1 150px;
  padding: 14px 16px 14px 34px;
  border-top: 1px solid rgba(201, 162, 39, 0.5);
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-about .ab-flow > li::before {
  content: counter(abflow, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--gold);
  opacity: 0.85;
}

/* ---------- 工艺手风琴 ---------- */

.page-about .ab-craft {
  border-top: 1px solid var(--ab-rule);
}

.page-about .ab-craft .accordion__item {
  border-bottom: 1px solid var(--ab-rule);
}

.page-about .ab-craft .accordion__trigger {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--silver);
  transition: color var(--dur) var(--ease);
}

.page-about .ab-craft .accordion__trigger::-webkit-details-marker {
  display: none;
}

.page-about .ab-craft .accordion__trigger:hover {
  color: var(--gold-hi);
}

.page-about .ab-craft .accordion__trigger::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border-right: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
  transform: rotate(45deg) translateY(-2px);
  transition: transform var(--dur) var(--ease);
}

.page-about .ab-craft details[open] > .accordion__trigger::after {
  transform: rotate(225deg) translateY(-2px);
}

.page-about .ab-craft .accordion__trigger:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 4px;
}

.page-about .ab-craft .accordion__panel {
  padding: 0 0 20px;
}

.page-about .ab-craft .accordion__panel .prose {
  margin: 0;
  max-width: 42em;
}

/* ---------- 出厂检测列表 ---------- */

.page-about .ab-tests {
  list-style: none;
  margin: clamp(24px, 4vw, 32px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(216, 220, 227, 0.13);
  border: 1px solid rgba(216, 220, 227, 0.13);
}

.page-about .ab-tests > li {
  background: rgba(11, 11, 13, 0.34);
  padding: 20px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background var(--dur) var(--ease);
}

.page-about .ab-tests > li:hover {
  background: rgba(11, 11, 13, 0.5);
}

.page-about .ab-tests__name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--gold-hi);
}

.page-about .ab-tests__why {
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--silver);
  opacity: 0.82;
}

/* ---------- 研发数据 ---------- */

.page-about .ab-stats {
  list-style: none;
  margin: clamp(24px, 4vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(216, 220, 227, 0.13);
  border: 1px solid rgba(216, 220, 227, 0.13);
}

.page-about .ab-stats > .stat {
  background: rgba(11, 11, 13, 0.32);
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .ab-stats .stat__value {
  font-size: clamp(1.7rem, 5vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--gold);
  line-height: 1;
}

.page-about .ab-stats .stat__label {
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--silver);
  opacity: 0.76;
}

/* ---------- 文内链接组 ---------- */

.page-about .ab-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin-top: clamp(22px, 3.5vw, 30px);
}

/* ---------- 三条底线 ---------- */

.page-about .section--paper {
  color: var(--ink);
  --ab-rule: var(--ab-rule-light);
}

.page-about .section--paper .h2,
.page-about .section--paper .h3,
.page-about .section--paper .prose,
.page-about .section--paper .ab-pledge__item p {
  color: var(--ink);
}

.page-about .ab-pledge__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 64px);
}

.page-about .ab-pledge__head .prose {
  margin-top: 8px;
  max-width: 34em;
}

.page-about .ab-pledge__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-pledge__item {
  position: relative;
  padding: 26px 0 26px 54px;
  border-top: 1px solid var(--ab-rule-light);
}

.page-about .ab-pledge__item:last-child {
  border-bottom: 1px solid var(--ab-rule-light);
}

.page-about .ab-pledge__num {
  position: absolute;
  left: 0;
  top: 29px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gold);
}

.page-about .ab-pledge__item .h3 {
  margin: 0 0 8px;
}

.page-about .ab-pledge__item p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  max-width: 46em;
}

/* ---------- 收尾引导 ---------- */

.page-about .ab-cta {
  margin-top: clamp(48px, 7vw, 84px);
  padding: clamp(26px, 4vw, 42px);
  border: 1px solid var(--ab-rule-light);
  background: linear-gradient(118deg,
      rgba(201, 162, 39, 0.1),
      rgba(108, 62, 245, 0.07) 58%,
      transparent);
  display: grid;
  gap: 20px;
}

.page-about .ab-cta__text {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink);
  max-width: 40em;
}

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

/* ---------- 焦点可见性 ---------- */

.page-about a:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- 平板 ---------- */

@media (min-width: 640px) {
  .page-about .ab-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .ab-series {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .ab-tests {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

/* ---------- 桌面 ---------- */

@media (min-width: 940px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(150px, 200px) minmax(0, 1fr);
    gap: clamp(40px, 6vw, 96px);
    align-items: start;
  }

  .page-about .ab-node {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 76px);
  }

  .page-about .ab-node__side {
    position: sticky;
    top: var(--ab-sticky);
    align-self: start;
  }

  .page-about .ab-figures {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

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

  .page-about .ab-tests {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .ab-pledge__grid {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    align-items: start;
  }

  .page-about .ab-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

/* ---------- 减少动效 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-series > li,
  .page-about .ab-tests > li,
  .page-about .ab-craft .accordion__trigger,
  .page-about .ab-craft .accordion__trigger::after {
    transition: none;
  }
}
<<<END>>>