/* ===== 品牌概况 · 页面专属样式（作用域 .page-about） ===== */

.page-about {
  --about-rail: 2px;
  --about-dot: 14px;
  display: block;
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: clamp(1rem, 3vw, 1.8rem);
}

.page-about .about-hero__frame {
  position: relative;
  margin-top: 1.1rem;
  padding: clamp(1.4rem, 5vw, 3.2rem) clamp(1.1rem, 4.5vw, 3rem) clamp(1.5rem, 5vw, 3rem);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-l);
  background:
    radial-gradient(115% 135% at 92% -12%, rgba(47, 208, 196, 0.16), transparent 58%),
    radial-gradient(95% 120% at -8% 112%, rgba(255, 107, 74, 0.14), transparent 60%),
    linear-gradient(160deg, rgba(19, 44, 87, 0.78), rgba(6, 19, 42, 0.72));
  overflow: hidden;
}

.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  inset: 9px;
  border: 1px dashed rgba(175, 192, 214, 0.22);
  border-radius: calc(var(--radius-l) - 8px);
  pointer-events: none;
}

.page-about .about-hero__frame > * {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__title {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 7.2vw, 3.75rem);
  font-weight: 900;
  line-height: 1.13;
  letter-spacing: -0.022em;
  color: var(--pearl);
}

.page-about .about-hero__lede {
  margin: 1.1rem 0 0;
  max-width: 62ch;
  color: var(--fg-soft);
}

.page-about .about-rule {
  height: 9px;
  margin: 1.6rem 0 0;
  background-image: repeating-linear-gradient(90deg, var(--nacre) 0 1px, transparent 1px 16px);
  opacity: 0.32;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 1.4rem;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .about-hero__fact {
  padding: 0.9rem 1rem 1rem;
  background: rgba(10, 30, 63, 0.72);
}

.page-about .about-hero__num {
  margin: 0;
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 700;
  line-height: 1.05;
  color: var(--coral);
}

.page-about .about-hero__cap {
  margin: 0.4rem 0 0;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--fg-dim);
}

/* ---------- 发展阶段时间线 ---------- */
.page-about .about-timeline__figure {
  margin: 1.7rem 0 0;
  border-radius: var(--radius-l);
  overflow: hidden;
}

.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 2.2rem 0 0;
  padding: 0 0 0 2.1rem;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 6px;
  bottom: 6px;
  width: var(--about-rail);
  border-radius: 2px;
  background: linear-gradient(
    180deg,
    var(--brass) 0%,
    rgba(216, 182, 121, 0.28) 38%,
    rgba(47, 208, 196, 0.55) 100%
  );
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: 2.1rem;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -2.1rem;
  top: 0.35rem;
  width: var(--about-dot);
  height: var(--about-dot);
  border-radius: 50%;
  background: var(--pearl);
  border: 2px solid var(--coral);
  box-shadow: 0 0 0 4px rgba(255, 107, 74, 0.13);
}

.page-about .timeline__item--now::before {
  background: var(--signal-teal);
  border-color: var(--signal-teal);
  box-shadow: 0 0 0 4px rgba(47, 208, 196, 0.16);
}

.page-about .timeline__year {
  margin: 0 0 0.35rem;
  font-size: 0.86rem;
  letter-spacing: 0.16em;
  color: var(--brass);
}

.page-about .timeline__title {
  margin: 0 0 0.5rem;
  color: var(--pearl);
}

.page-about .timeline__body .prose {
  margin: 0;
}

.page-about .timeline__more {
  margin-top: 0.7rem;
}

.page-about .timeline__more summary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--signal-teal);
  list-style: none;
  transition: color var(--dur) var(--ease-out);
}

.page-about .timeline__more summary::-webkit-details-marker {
  display: none;
}

.page-about .timeline__more summary::before {
  content: "＋";
  font-family: var(--font-mono);
  color: var(--coral);
  line-height: 1;
}

.page-about .timeline__more[open] summary::before {
  content: "－";
}

.page-about .timeline__more summary:hover,
.page-about .timeline__more summary:focus-visible {
  color: var(--coral-veil);
}

.page-about .timeline__more .prose {
  margin: 0.65rem 0 0;
  padding-left: 0.95rem;
  border-left: 2px solid rgba(255, 107, 74, 0.35);
  color: var(--fg-soft);
  font-size: 0.95rem;
}

/* ---------- 六类型号横向服务带 ---------- */
.page-about .about-capability {
  padding-top: clamp(2.6rem, 6vw, 4.5rem);
}

.page-about .mband {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(200px, 76%);
  gap: 0.85rem;
  margin-top: 1.5rem;
  padding: 0.3rem 0.2rem 1rem;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .mcard {
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: 1.15rem 1.15rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: linear-gradient(170deg, rgba(19, 44, 87, 0.86), rgba(10, 30, 63, 0.7));
  transition:
    transform var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out),
    box-shadow var(--dur) var(--ease-out);
}

.page-about .mcard:hover,
.page-about .mcard:focus-within,
.page-about .mcard:focus-visible {
  transform: translateY(-5px);
  border-color: var(--coral);
  box-shadow: 0 14px 30px rgba(4, 12, 28, 0.55);
  outline: none;
}

.page-about .mcard__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.28rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--pearl);
}

.page-about .mcard__desc {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.72;
  color: var(--fg-soft);
}

.page-about .mcard__scenes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: auto 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-capability__note {
  margin: 0.4rem 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--fg-dim);
}

/* ---------- 团队与运营中心 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: 1.7rem;
}

.page-about .about-team__text .prose {
  margin: 0 0 1rem;
  max-width: 38em;
}

.page-about .about-team__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 1rem;
  margin-top: 1.6rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}

.page-about .about-stat__num {
  margin: 0;
  font-size: clamp(1.9rem, 6vw, 2.7rem);
  font-weight: 700;
  line-height: 1;
  color: var(--signal-teal);
}

.page-about .about-stat__cap {
  margin: 0.45rem 0 0;
  font-size: 0.83rem;
  line-height: 1.55;
  color: var(--fg-dim);
}

.page-about .about-team__figure {
  border-radius: var(--radius-l);
  overflow: hidden;
}

/* ---------- 服务网络 ---------- */
.page-about .about-network {
  padding-top: clamp(2.4rem, 6vw, 4rem);
}

.page-about .about-network__panel {
  padding: clamp(1.4rem, 5vw, 3rem) clamp(1.1rem, 4.5vw, 3rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background:
    radial-gradient(100% 90% at 0% 0%, rgba(91, 42, 74, 0.32), transparent 62%),
    linear-gradient(200deg, rgba(19, 44, 87, 0.86), rgba(6, 19, 42, 0.8));
}

.page-about .about-network__map {
  margin: 1.6rem 0 0;
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .about-zones {
  display: grid;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.page-about .zone {
  position: relative;
  padding: 1rem 1.05rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: rgba(6, 19, 42, 0.55);
  transition:
    border-color var(--dur) var(--ease-out),
    transform var(--dur) var(--ease-out);
}

.page-about .zone::before {
  content: "";
  position: absolute;
  left: 1.05rem;
  top: 0;
  width: 34px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--brass);
}

.page-about .zone:nth-child(2)::before {
  background: var(--coral);
}

.page-about .zone:nth-child(3)::before {
  background: var(--signal-teal);
}

.page-about .zone:nth-child(4)::before {
  background: var(--nacre);
}

.page-about .zone:hover,
.page-about .zone:focus-within {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}

.page-about .zone__code {
  margin: 0.5rem 0 0;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--fg-dim);
}

.page-about .zone__name {
  margin: 0.4rem 0 0;
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--pearl);
}

.page-about .zone__duty {
  margin: 0.45rem 0 0;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--fg-soft);
}

.page-about .about-network__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.1rem;
  margin-top: 1.8rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.page-about .about-fact__num {
  margin: 0;
  font-size: clamp(1.7rem, 5.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--pearl);
}

.page-about .about-fact__cap {
  margin: 0.45rem 0 0;
  font-size: 0.83rem;
  line-height: 1.6;
  color: var(--fg-dim);
}

.page-about .about-network__tail {
  margin: 1.5rem 0 0;
  padding-top: 1.3rem;
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--fg-soft);
}

/* ---------- 长期合作理由 ---------- */
.page-about .about-reasons__list {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .reason {
  display: grid;
  gap: 0.4rem 1.3rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

.page-about .reason__num {
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--coral);
}

.page-about .reason__title {
  margin: 0 0 0.5rem;
  color: var(--pearl);
}

.page-about .reason__body .prose {
  margin: 0;
  color: var(--fg-soft);
}

.page-about .about-reasons__tail {
  margin: 1.4rem 0 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--fg-dim);
}

.page-about .about-reasons__tail a {
  color: var(--signal-teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 208, 196, 0.4);
  transition: color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}

.page-about .about-reasons__tail a:hover,
.page-about .about-reasons__tail a:focus-visible {
  color: var(--coral);
  border-color: var(--coral);
}

/* ---------- 资质与官方信息 ---------- */
.page-about .about-legal__panel {
  position: relative;
  padding: clamp(1.4rem, 5vw, 2.8rem) clamp(1.1rem, 4.5vw, 2.6rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(180deg, rgba(19, 44, 87, 0.74), rgba(6, 19, 42, 0.82));
  overflow: hidden;
}

.page-about .about-legal__panel::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background-image: repeating-linear-gradient(90deg, var(--brass) 0 2px, transparent 2px 18px);
  opacity: 0.42;
}

.page-about .about-legal__title {
  margin: 0.5rem 0 0;
  color: var(--pearl);
}

.page-about .about-facts {
  margin: 1.4rem 0 0;
  padding: 0;
}

.page-about .about-facts__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.25rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-facts__row dt {
  font-size: 0.81rem;
  letter-spacing: 0.06em;
  color: var(--fg-dim);
}

.page-about .about-facts__row dd {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--pearl);
  word-break: break-word;
}

.page-about .about-facts__row dd a {
  color: var(--signal-teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 208, 196, 0.4);
}

.page-about .about-facts__row dd a:hover,
.page-about .about-facts__row dd a:focus-visible {
  color: var(--coral);
  border-color: var(--coral);
}

.page-about .about-legal__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.page-about .about-legal__links {
  margin: 1.1rem 0 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--fg-dim);
}

.page-about .about-legal__links a {
  color: var(--signal-teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 208, 196, 0.4);
}

.page-about .about-legal__links a:hover,
.page-about .about-legal__links a:focus-visible {
  color: var(--coral);
  border-color: var(--coral);
}

/* ---------- 图片容器兜底 ---------- */
.page-about .frame__media {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .reason {
    grid-template-columns: 3.2rem minmax(0, 1fr);
    align-items: start;
  }

  .page-about .reason__num {
    padding-top: 0.35rem;
  }

  .page-about .about-facts__row {
    grid-template-columns: minmax(8rem, 12rem) minmax(0, 1fr);
    gap: 1rem;
    align-items: baseline;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-about .timeline {
    padding-left: 3.4rem;
  }

  .page-about .timeline::before {
    left: 8px;
  }

  .page-about .timeline__item::before {
    left: -3.4rem;
    width: 18px;
    height: 18px;
  }

  .page-about .mband {
    grid-auto-flow: row;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    overflow: visible;
    padding: 0;
  }

  .page-about .mcard {
    min-height: 13.5rem;
  }

  .page-about .about-zones {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.82fr);
    align-items: start;
    gap: 2.6rem;
  }

  .page-about .about-team__figure {
    margin-top: 0.4rem;
  }

  .page-about .about-network__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-about .about-hero__lede {
    max-width: 68ch;
  }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .mcard,
  .page-about .zone,
  .page-about .timeline__more summary {
    transition: none;
  }

  .page-about .mcard:hover,
  .page-about .mcard:focus-within,
  .page-about .mcard:focus-visible,
  .page-about .zone:hover,
  .page-about .zone:focus-within {
    transform: none;
  }
}
<<<END>>>