.page-about {
  --about-rail: 244px;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-about #origin,
.page-about #timeline,
.page-about #values,
.page-about #team,
.page-about #eco,
.page-about #reach {
  scroll-margin-top: 110px;
}

/* ---------- 分屏骨架 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 4vw, 44px);
  padding-top: clamp(14px, 2.4vw, 26px);
}

.page-about .about-flow {
  display: grid;
  gap: clamp(22px, 3.8vw, 42px);
  min-width: 0;
}

/* ---------- 左侧刊头 ---------- */
.page-about .about-rail {
  display: grid;
  gap: 14px;
  align-content: start;
  padding: 18px;
  border: var(--bd) solid var(--gold);
  background: var(--ink-700);
  box-shadow: var(--shadow-hard);
}

.page-about .about-rail__tag {
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(245, 197, 66, 0.45);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .about-rail__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(40px, 9vw, 60px);
  line-height: 0.9;
  letter-spacing: 0.02em;
  color: var(--paper);
  text-shadow: 4px 4px 0 var(--violet);
}

.page-about .about-rail__slogan {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 4.4vw, 26px);
  line-height: 1.3;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .about-rail__nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  margin-top: 4px;
  border-top: var(--bd) solid rgba(245, 197, 66, 0.3);
  padding-top: 10px;
}

.page-about .about-rail__link {
  display: block;
  padding: 8px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--steel);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--ink-900);
  background: var(--gold);
  border-left-color: var(--coral);
  outline: none;
}

/* ---------- 品牌序章 ---------- */
.page-about .about-origin {
  position: relative;
  padding: clamp(20px, 3.4vw, 44px);
  border: var(--bd) solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-about .about-origin::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 62px;
  height: 62px;
  background: repeating-linear-gradient(45deg, var(--gold) 0 7px, transparent 7px 14px);
  border-left: var(--bd) solid var(--ink);
  border-bottom: var(--bd) solid var(--ink);
  pointer-events: none;
}

.page-about .about-origin h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 6vw, 54px);
  line-height: 1.06;
  letter-spacing: 0.01em;
  margin: 10px 0 20px;
  padding-right: 40px;
}

.page-about .about-origin p {
  margin: 0 0 16px;
  line-height: 1.85;
  font-size: 15.5px;
  color: var(--ink-700);
}

.page-about .about-origin__lead {
  padding-left: clamp(12px, 2vw, 18px);
  border-left: 6px solid var(--gold);
  font-size: clamp(16px, 2.1vw, 19px);
  line-height: 1.85;
  color: var(--ink);
}

/* ---------- 通用区块 ---------- */
.page-about .about-block {
  padding: clamp(20px, 3.2vw, 40px);
  border: var(--bd) solid var(--ink);
  box-shadow: var(--shadow-hard);
}

.page-about .about-block--paper {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--ink);
}

.page-about .about-block--mid {
  background: var(--ink-700);
  color: var(--paper);
  border-color: var(--gold);
}

.page-about .about-block--dark {
  background: var(--ink-900);
  color: var(--paper);
  border-color: var(--gold);
}

.page-about .section-head {
  margin: 0 0 clamp(16px, 2.6vw, 28px);
  padding-bottom: 12px;
}

.page-about .section-head__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.8vw, 38px);
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.page-about .section-head__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--steel);
}

.page-about .about-block--paper .section-head__note {
  color: var(--ink-700);
}

/* ---------- 图片 ---------- */
.page-about .about-shot {
  margin: 22px 0 0;
  border: var(--bd) solid var(--ink);
  background: var(--ink-900);
  box-shadow: var(--shadow-hard);
}

.page-about .about-block--mid .about-shot,
.page-about .about-block--dark .about-shot {
  border-color: var(--gold);
}

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

.page-about .about-shot figcaption {
  padding: 10px 14px;
  border-top: var(--bd) solid currentColor;
  background: var(--ink-900);
  color: var(--steel);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
}

.page-about .about-block--paper .about-shot {
  border-color: var(--ink);
}

.page-about .about-block--paper .about-shot figcaption {
  border-top-color: var(--ink);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  margin-top: clamp(8px, 1.6vw, 16px);
}

.page-about .about-timeline__wire {
  position: absolute;
  left: 9px;
  top: 12px;
  width: 4px;
  height: calc(100% - 24px);
  pointer-events: none;
}

.page-about .about-timeline__wire line {
  stroke: var(--gold);
  stroke-width: 3;
  stroke-linecap: round;
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 40px;
  display: grid;
  gap: clamp(14px, 2.2vw, 24px);
}

.page-about .about-timeline__item {
  position: relative;
  min-width: 0;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -36px;
  top: 14px;
  width: 14px;
  height: 14px;
  box-sizing: border-box;
  background: var(--gold);
  border: 2px solid var(--ink-900);
  transform: rotate(45deg);
  transition: background-color var(--dur) var(--ease);
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus-within::before {
  background: var(--coral);
}

.page-about .about-timeline__card {
  padding: 16px 18px;
  border: var(--bd) solid var(--gold);
  background: rgba(14, 47, 82, 0.72);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__card,
.page-about .about-timeline__item:focus-within .about-timeline__card {
  transform: translate(4px, -4px);
  box-shadow: var(--shadow-gold);
  border-color: var(--gold-soft);
  background: var(--ink-700);
}

.page-about .about-timeline__year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.2vw, 20px);
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-about .about-timeline__card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  letter-spacing: 0.03em;
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-timeline__card a {
  color: var(--gold);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-about .about-timeline__card a:hover {
  color: var(--gold-soft);
}

/* ---------- 价值准则 ---------- */
.page-about .about-values {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--bd) solid var(--ink);
}

.page-about .about-values__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: clamp(10px, 2vw, 20px);
  align-items: start;
  padding: clamp(16px, 2.4vw, 24px) 0;
  border-bottom: var(--bd) solid var(--ink);
}

.page-about .about-values__num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--violet-ink);
}

.page-about .about-values__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  letter-spacing: 0.02em;
}

.page-about .about-values__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-700);
}

.page-about .about-values__link {
  color: var(--violet-ink);
  text-decoration: underline;
  text-decoration-color: var(--coral);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-about .about-values__link:hover {
  color: var(--coral);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 32px);
}

.page-about .about-team .about-shot {
  margin-top: 0;
}

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

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2px;
  margin-bottom: 18px;
  border: var(--bd) solid var(--gold);
  background: var(--gold);
}

.page-about .about-stat {
  padding: 12px 8px;
  background: var(--ink-900);
  text-align: center;
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 7px;
  font-size: 12px;
  color: var(--steel);
}

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

.page-about .about-facts li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-about .about-facts strong {
  color: var(--paper);
  font-weight: 700;
}

.page-about .about-facts a {
  color: var(--gold);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-about .about-facts a:hover {
  color: var(--gold-soft);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  margin-top: clamp(18px, 3vw, 28px);
  border: var(--bd) solid var(--ink);
  background: var(--ink);
}

.page-about .about-eco__card {
  padding: clamp(16px, 2.4vw, 24px);
  background: var(--paper);
  transition: background-color var(--dur) var(--ease);
}

.page-about .about-eco__card:hover {
  background: var(--gold-soft);
}

.page-about .about-eco__card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 22px);
  letter-spacing: 0.03em;
  color: var(--ink);
}

.page-about .about-eco__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-about .about-eco__note {
  margin: clamp(16px, 2.6vw, 22px) 0 0;
  padding: 14px 16px;
  border-left: 6px solid var(--coral);
  background: rgba(255, 107, 74, 0.1);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-700);
}

/* ---------- 服务覆盖 ---------- */
.page-about .about-reach {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3.4vw, 36px);
}

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

.page-about .about-reach__lead {
  margin: 0 0 20px;
  padding-left: 14px;
  border-left: 6px solid var(--gold);
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.85;
  color: var(--paper);
}

.page-about .about-reach__contact {
  padding: clamp(18px, 2.6vw, 26px);
  border: var(--bd) solid var(--gold);
  background: var(--ink-700);
  box-shadow: var(--shadow-gold);
}

.page-about .about-reach__contact h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: 0.03em;
  color: var(--gold);
}

.page-about .about-reach__contact > p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-reach__line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-about .about-reach__k {
  flex: 0 0 auto;
  min-width: 4.2em;
  color: var(--gold);
  letter-spacing: 0.06em;
}

.page-about .about-reach__v {
  color: var(--paper);
  word-break: break-word;
}

.page-about .about-reach__contact .btn {
  margin-top: 8px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-origin::after {
    width: 84px;
    height: 84px;
  }

  .page-about .about-origin h1 {
    padding-right: 70px;
  }
}

@media (min-width: 720px) {
  .page-about .about-eco {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 860px) {
  .page-about .about-reach {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    align-items: start;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-rail {
    position: sticky;
    top: 106px;
    padding: 22px 18px 26px;
  }

  .page-about .about-rail__slogan {
    writing-mode: vertical-rl;
    text-orientation: upright;
    justify-self: start;
    margin-left: 4px;
    font-size: 21px;
    line-height: 1;
    letter-spacing: 0.3em;
  }

  .page-about .about-rail__nav {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .page-about .about-timeline__list {
    padding-left: 48px;
  }

  .page-about .about-timeline__item::before {
    left: -44px;
  }

  .page-about .about-timeline__wire {
    left: 11px;
  }
}
<<<END>>>