.page-about {
  --about-rail: 9.5rem;
  --about-shift: 1.6rem;
  --about-body: rgba(247, 241, 229, 0.84);
  background:
    radial-gradient(120% 80% at 88% -12%, rgba(52, 245, 197, 0.10), transparent 62%),
    radial-gradient(90% 60% at 0% 100%, rgba(255, 122, 47, 0.06), transparent 60%),
    var(--ink-950);
  color: var(--paper);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3.25rem);
  padding-block: clamp(1.5rem, 4vw, 2.75rem) clamp(2rem, 5vw, 3.5rem);
  border-top: 1px solid var(--line);
}

.page-about .about-hero__main {
  max-width: 100%;
}

.page-about .about-hero__eyebrow {
  margin-bottom: 0.9rem;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 6.2vw, 4.1rem);
  line-height: 1.03;
  letter-spacing: -0.02em;
  margin: 0 0 1.1rem;
  text-wrap: balance;
}

.page-about .about-hero__lede {
  max-width: 46ch;
  margin: 0 0 1.6rem;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .about-hero__actions .kb-btn {
  text-decoration: none;
}

.page-about .about-board {
  display: grid;
  gap: 0;
  align-self: start;
  padding: clamp(1rem, 2.6vw, 1.5rem);
  border: 2px solid var(--line-mint);
  background: linear-gradient(180deg, rgba(10, 36, 29, 0.94), rgba(5, 19, 15, 0.94));
}

.page-about .about-board__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.72rem;
  border-bottom: 1px dashed var(--line);
}

.page-about .about-board__row:last-child {
  border-bottom: 0;
}

.page-about .about-board__value {
  font-family: var(--font-mono);
  font-size: clamp(1.45rem, 3.4vw, 1.95rem);
  line-height: 1;
  color: var(--mint);
  letter-spacing: -0.02em;
}

.page-about .about-board__unit {
  font-size: 0.7em;
  margin-left: 0.1em;
}

.page-about .about-board__label {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
  text-align: right;
}

@media (min-width: 880px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }
  .page-about .about-board {
    margin-top: 0.4rem;
  }
}

/* ---------- 通用排版 ---------- */
.page-about .about-h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 3.5vw, 2.45rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin: 0 0 0.9rem;
  text-wrap: balance;
}

.page-about .about-p {
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--about-body);
}

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

.page-about .about-figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--line-sand);
  background: linear-gradient(160deg, var(--ink-700), var(--ink-900));
  overflow: hidden;
}

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

.page-about .about-figure figcaption {
  padding: 0.7rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--mist);
  border-top: 1px solid var(--line);
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.75rem);
  padding-block: clamp(2rem, 5vw, 3.5rem);
  border-top: 1px solid var(--line);
}

.page-about .about-origin__text {
  order: 2;
}

.page-about .about-figure--origin {
  order: 1;
}

.page-about .about-quote {
  margin-top: 1.4rem;
  padding: clamp(1.15rem, 3vw, 1.8rem);
  background: var(--sand);
  color: var(--ink-900);
  box-shadow: 7px 7px 0 rgba(52, 245, 197, 0.14), 14px 14px 0 rgba(232, 223, 205, 0.06);
}

.page-about .about-quote p {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.page-about .about-quote__meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(10, 36, 29, 0.7);
}

@media (min-width: 900px) {
  .page-about .about-origin {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
  .page-about .about-origin__text {
    order: 1;
  }
  .page-about .about-figure--origin {
    order: 2;
    position: sticky;
    top: 6rem;
  }
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  padding-block: clamp(2rem, 5vw, 3.5rem);
  border-top: 1px solid var(--line);
}

.page-about .about-timeline__intro {
  max-width: 52ch;
}

.page-about .about-trail {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-step {
  display: grid;
  gap: 0.5rem 1.5rem;
  padding-block: clamp(1.1rem, 2.6vw, 1.6rem);
  border-top: 1px solid var(--line);
}

.page-about .about-step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-step__year {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  letter-spacing: 0.02em;
  color: var(--mint);
  text-decoration: none;
  align-self: start;
}

.page-about .about-step__year:hover,
.page-about .about-step__year:focus-visible {
  color: var(--acid);
}

.page-about .about-step__phase {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
  white-space: nowrap;
}

.page-about .about-step__body h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-step__body p {
  margin: 0;
  font-size: 0.9688rem;
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .about-step__facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.85rem 0 0;
  padding: 0;
}

.page-about .about-step__facts li {
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--line-mint);
  background: rgba(52, 245, 197, 0.07);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--mint);
}

@media (min-width: 820px) {
  .page-about .about-step {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    column-gap: clamp(1.5rem, 3vw, 2.5rem);
  }
  .page-about .about-step__year {
    flex-direction: column;
    gap: 0.35rem;
  }
  .page-about .about-step__body {
    position: relative;
    padding-left: 1.85rem;
  }
  .page-about .about-step__body::after {
    content: "";
    position: absolute;
    left: 0.28rem;
    top: 0.55rem;
    bottom: -1.5rem;
    width: 1px;
    background: var(--line);
  }
  .page-about .about-step:last-child .about-step__body::after {
    bottom: 0.6rem;
  }
  .page-about .about-step__body::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 50%;
    background: var(--mint);
    box-shadow: 0 0 0 3px var(--ink-950), 0 0 14px rgba(52, 245, 197, 0.55);
    z-index: 1;
  }
}

@media (min-width: 1024px) {
  .page-about .about-step:nth-child(1) { --about-shift-step: 0; }
  .page-about .about-step:nth-child(2) { --about-shift-step: 1; }
  .page-about .about-step:nth-child(3) { --about-shift-step: 2; }
  .page-about .about-step:nth-child(4) { --about-shift-step: 3; }
  .page-about .about-step:nth-child(5) { --about-shift-step: 4; }
  .page-about .about-step:nth-child(6) { --about-shift-step: 5; }

  .page-about .about-step__body {
    margin-left: calc(var(--about-shift-step, 0) * var(--about-shift));
  }
}

/* ---------- 数据校对 ---------- */
.page-about .about-verify {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.75rem);
  padding-block: clamp(2rem, 5vw, 3.5rem);
  border-top: 1px solid var(--line);
}

.page-about .about-verify__text {
  order: 1;
}

.page-about .about-figure--verify {
  order: 2;
}

.page-about .about-verify__list {
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 1rem 0 0;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 0.65rem;
}

.page-about .about-verify__list li {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--about-body);
}

.page-about .about-verify__list .kb-num {
  min-width: 2ch;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--signal);
  letter-spacing: -0.02em;
}

@media (min-width: 900px) {
  .page-about .about-verify {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }
  .page-about .about-verify__text {
    order: 2;
  }
  .page-about .about-figure--verify {
    order: 1;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-crew {
  padding-block: clamp(2rem, 5vw, 3.5rem);
  border-top: 1px solid var(--line);
}

.page-about .about-crew__intro {
  max-width: 54ch;
}

.page-about .about-crew__grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-crew__card {
  padding: clamp(1.1rem, 2.6vw, 1.6rem);
  background: var(--ink-800);
  display: grid;
  gap: 0.5rem;
  align-content: start;
}

.page-about .about-crew__card:nth-child(even) {
  background: var(--ink-900);
}

.page-about .about-crew__num {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  line-height: 1;
  color: var(--acid);
  letter-spacing: -0.02em;
}

.page-about .about-crew__card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .about-crew__card p:last-child {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
}

@media (min-width: 640px) {
  .page-about .about-crew__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .about-crew__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 天津 ---------- */
.page-about .about-city {
  padding-block: clamp(2rem, 5vw, 3.5rem);
  border-top: 1px solid var(--line);
}

.page-about .about-city__inner {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.5rem);
  padding: clamp(1.25rem, 3.5vw, 2.25rem);
  border: 2px solid var(--line-mint);
  background: linear-gradient(165deg, rgba(10, 36, 29, 0.96), rgba(5, 19, 15, 0.96));
}

.page-about .about-city__contact {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-about .about-city__contact li {
  display: grid;
  gap: 0.2rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px dashed var(--line);
}

.page-about .about-city__contact li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-city__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .about-city__value {
  font-size: 0.9688rem;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-about .about-city__note {
  margin: 1rem 0 1.35rem;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--mist);
  padding-left: 0.85rem;
  border-left: 2px solid var(--signal);
}

.page-about .about-city .kb-btn {
  text-decoration: none;
}

@media (min-width: 900px) {
  .page-about .about-city__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
}

/* ---------- 继续阅读 ---------- */
.page-about .about-next {
  padding-block: clamp(2rem, 5vw, 3rem) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-next__title {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .about-next__links {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-next__links a {
  display: block;
  padding: 0.95rem 1.1rem;
  background: var(--ink-900);
  color: var(--paper);
  text-decoration: none;
  font-size: 0.9375rem;
  line-height: 1.6;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-next__links a:hover,
.page-about .about-next__links a:focus-visible {
  background: var(--ink-700);
  color: var(--mint);
}

.page-about .about-next__top {
  display: inline-block;
  margin-top: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid var(--line-mint);
  padding-bottom: 0.2rem;
}

.page-about .about-next__top:hover,
.page-about .about-next__top:focus-visible {
  color: var(--acid);
}

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-next__links a,
  .page-about .about-step__year {
    transition: none;
  }
}
<<<END>>>