.page-about {
  --about-rail: 4rem;
  --about-glow: rgba(25, 211, 197, .16);
  --about-glow-warm: rgba(255, 107, 74, .12);
}

.page-about .about-hero {
  position: relative;
  padding: clamp(22px, 5vw, 52px) 0 clamp(28px, 5vw, 60px);
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 8%, var(--about-glow), transparent 46%),
    radial-gradient(circle at 8% 92%, var(--about-glow-warm), transparent 52%);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero__frame {
  position: relative;
  padding: clamp(18px, 3.4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, rgba(14, 44, 68, .55), rgba(7, 26, 43, .18));
}

.page-about .about-hero__frame::before,
.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 2px;
  height: 16px;
  transform: translateX(-50%);
  background: var(--cyan-500);
  opacity: .6;
}

.page-about .about-hero__frame::before { top: -8px; }
.page-about .about-hero__frame::after { bottom: -8px; }

.page-about .crumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gray-400);
  margin-bottom: clamp(20px, 3.6vw, 34px);
}

.page-about .crumbs a {
  color: var(--gray-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .24s var(--ease), border-color .24s var(--ease);
}

.page-about .crumbs a:hover,
.page-about .crumbs a:focus-visible {
  color: var(--cyan-300);
  border-color: var(--cyan-300);
}

.page-about .crumbs__sep { color: var(--line); }
.page-about .crumbs__now { color: var(--cyan-500); }

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

.page-about .about-hero__copy .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan-500);
  margin: 0 0 12px;
}

.page-about .about-hero__copy h1 {
  font-family: var(--font-head);
  font-size: clamp(30px, 5.4vw, 52px);
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white-050);
  margin: 0 0 clamp(16px, 2.4vw, 22px);
}

.page-about .about-hero__lead {
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--gray-400);
  margin: 0;
  max-width: 46ch;
}

.page-about .about-hero__actions {
  list-style: none;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--glass);
  box-shadow: 0 22px 60px -34px rgba(25, 211, 197, .5);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: calc(var(--radius-lg) - 8px);
}

.page-about .about-hero__figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--gray-400);
  text-align: right;
}

.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--deep-800);
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.6vw, 32px);
  line-height: 1;
  font-weight: 700;
  color: var(--cyan-500);
}

.page-about .about-hero__stats li:nth-child(2) .about-stat__num { color: var(--amber-400); }
.page-about .about-hero__stats li:nth-child(3) .about-stat__num { color: var(--mint-400); }
.page-about .about-hero__stats li:nth-child(4) .about-stat__num { color: var(--coral-500); }

.page-about .about-stat__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--gray-400);
}

/* ---------- 品牌起点 ---------- */

.page-about .about-origin {
  position: relative;
}

.page-about .about-origin__grid {
  display: grid;
  gap: clamp(22px, 3.6vw, 36px);
}

.page-about .about-origin__rail {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .about-origin__rail .timecode {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--coral-500);
  white-space: nowrap;
}

.page-about .about-origin__line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--coral-500), transparent);
}

.page-about .about-origin__body h2 {
  font-family: var(--font-head);
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.3;
  font-weight: 700;
  color: var(--white-050);
  margin: 0 0 18px;
}

.page-about .about-origin__body p {
  font-size: 16px;
  line-height: 1.9;
  color: var(--gray-400);
  margin: 0 0 16px;
}

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

.page-about .about-origin__aside {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--glass);
}

.page-about .about-origin__aside .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan-300);
  margin: 0 0 16px;
}

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

.page-about .about-origin__list li {
  display: grid;
  gap: 8px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--line-soft);
}

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

.page-about .about-origin__list p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray-400);
}

.page-about .tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid currentColor;
  width: fit-content;
}

.page-about .tag--notice { color: var(--amber-400); }
.page-about .tag--review { color: var(--mint-400); }
.page-about .tag--live { color: var(--cyan-300); }
.page-about .tag--contact { color: var(--coral-500); }

/* ---------- 团队分工 ---------- */

.page-about .about-team__head .eyebrow,
.page-about .about-pace__head .eyebrow,
.page-about .about-loop__head .eyebrow,
.page-about .about-legal__body .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan-500);
  margin: 0 0 12px;
}

.page-about .about-team__head h2,
.page-about .about-pace__head h2,
.page-about .about-loop__head h2,
.page-about .about-legal__body h2 {
  font-family: var(--font-head);
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.32;
  font-weight: 700;
  color: var(--white-050);
  margin: 0 0 14px;
}

.page-about .about-team__intro,
.page-about .about-pace__intro,
.page-about .about-loop__intro {
  font-size: 16px;
  line-height: 1.85;
  color: var(--gray-400);
  margin: 0;
  max-width: 62ch;
}

.page-about .about-team__grid {
  display: grid;
  gap: 18px;
  margin-top: clamp(26px, 4vw, 40px);
}

.page-about .about-team__card {
  position: relative;
  padding: 26px 22px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--glass);
  transition: transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}

.page-about .about-team__card::before {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  top: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--line);
}

.page-about .about-team__card--edit::before { background: var(--amber-400); }
.page-about .about-team__card--review::before { background: var(--mint-400); }
.page-about .about-team__card--service::before { background: var(--coral-500); }

.page-about .about-team__card:hover {
  transform: translateY(-6px);
  border-color: rgba(25, 211, 197, .38);
  background: var(--glass-strong);
}

.page-about .about-team__card h3 {
  font-family: var(--font-head);
  font-size: 19px;
  line-height: 1.5;
  font-weight: 700;
  color: var(--white-050);
  margin: 16px 0 12px;
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--gray-400);
}

/* ---------- 更新节奏 ---------- */

.page-about .about-pace__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .about-pace__tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--about-rail);
  position: relative;
}

.page-about .about-pace__tl::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan-500), rgba(25, 211, 197, .12));
  border-radius: 2px;
}

.page-about .about-pace__tl .tl-item {
  position: relative;
  padding: 0 0 clamp(24px, 3.4vw, 34px);
}

.page-about .about-pace__tl .tl-item:last-child { padding-bottom: 0; }

.page-about .about-pace__tl .tl-item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--about-rail));
  top: 6px;
  width: 12px;
  height: 12px;
  margin-left: -5px;
  border-radius: 50%;
  background: var(--deep-900);
  border: 2px solid var(--cyan-500);
  transition: box-shadow .3s var(--ease), background .3s var(--ease);
}

.page-about .about-pace__tl .tl-item:hover::before {
  background: var(--cyan-500);
  box-shadow: 0 0 0 6px rgba(25, 211, 197, .16);
}

.page-about .about-pace__tl .tl-date {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--amber-400);
  margin-bottom: 8px;
}

.page-about .about-pace__body h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white-050);
  margin: 0 0 8px;
}

.page-about .about-pace__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--gray-400);
}

.page-about .about-pace__figure {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--deep-700);
}

.page-about .about-pace__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: calc(var(--radius-lg) - 8px);
}

.page-about .about-pace__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--gray-400);
}

/* ---------- 反馈去向 ---------- */

.page-about .about-loop__steps {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
  counter-reset: none;
}

.page-about .about-loop__step {
  position: relative;
  padding: 22px 22px 24px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--coral-500);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--deep-800);
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.page-about .about-loop__step:hover {
  border-left-color: var(--cyan-500);
  background: var(--deep-700);
}

.page-about .about-loop__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan-300);
  margin-bottom: 10px;
}

.page-about .about-loop__step h3 {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white-050);
  margin: 0 0 8px;
}

.page-about .about-loop__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray-400);
}

/* ---------- 备案与联系 ---------- */

.page-about .about-legal {
  position: relative;
}

.page-about .about-legal__grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 42px);
  padding: clamp(22px, 3.4vw, 38px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--glass-strong);
}

.page-about .about-legal__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}

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

.page-about .about-legal__figure figcaption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gray-400);
  background: var(--deep-700);
}

.page-about .about-legal__lead {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--gray-400);
  margin: 0 0 22px;
}

.page-about .about-legal__list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-legal__row {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--deep-800);
}

.page-about .about-legal__row dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--gray-400);
}

.page-about .about-legal__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--white-050);
  word-break: break-word;
}

.page-about .about-legal__mono {
  font-family: var(--font-mono);
  letter-spacing: .02em;
  color: var(--cyan-300) !important;
}

.page-about .about-legal__cta {
  margin: 24px 0 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about {
    --about-rail: 5.5rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
    gap: clamp(34px, 5vw, 68px);
  }

  .page-about .about-origin__grid {
    grid-template-columns: 7.5rem minmax(0, 1.2fr) minmax(0, .85fr);
    gap: clamp(24px, 3vw, 40px);
    align-items: start;
  }

  .page-about .about-origin__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .page-about .about-origin__line {
    width: 1px;
    height: clamp(90px, 16vw, 160px);
    flex: none;
    background: linear-gradient(180deg, var(--coral-500), transparent);
  }

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

  .page-about .about-team__card:nth-child(2) {
    margin-top: 26px;
  }

  .page-about .about-pace__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
    align-items: start;
  }

  .page-about .about-pace__figure {
    position: sticky;
    top: calc(var(--header-h, 72px) + 24px);
  }

  .page-about .about-loop__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1px;
    background: var(--line-soft);
    border: 1px solid var(--line-soft);
    border-radius: var(--radius);
    overflow: hidden;
  }

  .page-about .about-loop__step {
    border: 0;
    border-top: 2px solid var(--coral-500);
    border-radius: 0;
  }

  .page-about .about-loop__step:hover {
    border-top-color: var(--cyan-500);
  }

  .page-about .about-legal__grid {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    align-items: start;
  }

  .page-about .about-legal__row {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    align-items: baseline;
    gap: 12px;
  }
}

@media (min-width: 1120px) {
  .page-about .about-origin__body {
    padding-right: clamp(0px, 2vw, 28px);
  }
}
<<<END>>>