/* ===== 品牌使命 / 关于页 ===== */
.page-about {
  --about-gap: clamp(56px, 9vw, 124px);
  --about-line: rgba(200, 255, 61, .2);
  --about-border: rgba(159, 179, 204, .16);
  position: relative;
  padding-top: calc(var(--topbar-h) + 20px);
  background: var(--night);
  color: var(--ink);
  overflow-x: clip;
}

@media (min-width: 1024px) {
  .page-about {
    padding-top: 56px;
  }
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  margin-bottom: clamp(20px, 4vw, 36px);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--mist);
}

.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(159, 179, 204, .5);
}

.page-about .breadcrumb a {
  color: var(--signal);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--lime);
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--ink);
}

/* ---------- 首屏分屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: 34px;
  padding-bottom: var(--about-gap);
}

.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 7px 15px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(200, 255, 61, .35);
  background: rgba(200, 255, 61, .08);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--lime);
}

.page-about .about-hero h1 {
  margin: 0 0 20px;
  max-width: 20ch;
  font-size: clamp(29px, 5.2vw, 52px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -.015em;
  color: #fff;
}

.page-about .about-lead {
  margin: 0 0 28px;
  max-width: 36em;
  font-size: clamp(16px, 1.6vw, 17.5px);
  line-height: 1.85;
  color: rgba(228, 237, 250, .86);
}

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

/* ---------- 首屏视觉 ---------- */
.page-about .about-hero__visual {
  position: relative;
  display: grid;
  place-items: center;
  padding: 30px 24px;
  min-height: 292px;
  border-radius: var(--r-xl);
  border: 1px solid var(--about-border);
  background:
    radial-gradient(120% 90% at 82% 8%, rgba(44, 123, 234, .3), transparent 62%),
    linear-gradient(155deg, var(--deep), var(--night) 74%);
  overflow: hidden;
}

.page-about .about-hero__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(159, 179, 204, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(159, 179, 204, .07) 1px, transparent 1px);
  background-size: 42px 42px;
  pointer-events: none;
}

.page-about .about-visual__stage {
  position: relative;
  width: 100%;
  max-width: 340px;
}

.page-about .about-pitch {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .pitch-ring {
  fill: none;
  stroke: rgba(159, 179, 204, .26);
  stroke-width: 1.5;
}

.page-about .pitch-ring--thin {
  stroke: rgba(159, 179, 204, .14);
  stroke-dasharray: 4 7;
}

.page-about .pitch-arc {
  fill: none;
  stroke: rgba(44, 123, 234, .85);
  stroke-width: 2.5;
  stroke-linecap: round;
}

.page-about .pitch-arc--dim {
  stroke: rgba(159, 179, 204, .2);
  stroke-width: 1.5;
}

.page-about .pitch-line {
  fill: none;
  stroke: var(--lime);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 420;
  stroke-dashoffset: 420;
  animation: about-draw 1.5s var(--ease) .3s forwards;
}

.page-about .pitch-node {
  fill: var(--signal);
}

.page-about .pitch-node--ember {
  fill: var(--ember);
}

@keyframes about-draw {
  to {
    stroke-dashoffset: 0;
  }
}

.page-about .about-visual__sync {
  position: absolute;
  top: 22px;
  right: 22px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  background: rgba(5, 22, 47, .74);
  border: 1px solid rgba(159, 179, 204, .24);
  font-size: 12px;
  color: var(--mist);
}

.page-about .about-visual__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
  animation: about-breathe 2.4s var(--ease) infinite;
}

@keyframes about-breathe {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(200, 255, 61, .5);
    opacity: 1;
  }
  50% {
    box-shadow: 0 0 0 7px rgba(200, 255, 61, 0);
    opacity: .6;
  }
}

.page-about .about-visual__stat {
  position: absolute;
  left: 22px;
  bottom: 22px;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--r-pill);
  background: rgba(5, 22, 47, .74);
  border: 1px solid rgba(200, 255, 61, .32);
  font-size: 12.5px;
  color: var(--ink);
}

.page-about .about-visual__stat .num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--lime);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  position: relative;
  padding: clamp(52px, 8vw, 108px) 0;
}

.page-about .about-chapter + .about-chapter::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--lime), rgba(200, 255, 61, .08) 58%, transparent);
  opacity: .5;
}

.page-about .about-chapter--last {
  padding-bottom: clamp(72px, 11vw, 150px);
}

.page-about .about-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-about .about-head__num {
  font-family: var(--font-mono);
  font-size: clamp(38px, 7vw, 68px);
  font-weight: 800;
  line-height: .85;
  letter-spacing: -.05em;
  color: var(--lime);
}

.page-about .about-head__title {
  margin: 0;
  max-width: 22ch;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: #fff;
}

.page-about .about-intro {
  max-width: 60ch;
  margin: 0 0 clamp(24px, 4vw, 40px);
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 图文左右交替 ---------- */
.page-about .about-split {
  display: grid;
  gap: 26px;
}

.page-about .about-split__body p {
  margin: 0 0 16px;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(228, 237, 250, .86);
}

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

.page-about .about-media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--about-border);
  background: var(--deep);
}

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

/* ---------- 关键数字条目 ---------- */
.page-about .about-facts {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .about-facts__item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--r-md);
  background: rgba(12, 44, 92, .48);
  border: 1px solid var(--about-border);
}

.page-about .about-facts dt {
  flex: 0 0 auto;
  min-width: 88px;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--lime);
}

.page-about .about-facts dt span {
  margin-left: 2px;
  font-size: 13px;
  color: var(--lime-deep);
}

.page-about .about-facts dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 发展时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0 0 0 34px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--lime), rgba(200, 255, 61, .32) 55%, rgba(200, 255, 61, 0));
}

.page-about .about-tl {
  position: relative;
  padding: 0 0 30px;
}

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

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 6px;
  width: 12px;
  height: 12px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--night);
  border: 2px solid var(--lime);
}

.page-about .about-tl__year {
  display: inline-block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--lime);
}

.page-about .about-tl__title {
  margin: 0 0 6px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: #fff;
}

.page-about .about-tl__body p {
  margin: 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 团队分工 ---------- */
.page-about .about-team {
  display: grid;
  gap: 18px;
  margin-top: clamp(28px, 4vw, 48px);
}

.page-about .about-team__card {
  padding: 24px 22px 26px;
  border-radius: var(--r-lg);
  background: linear-gradient(170deg, rgba(18, 74, 143, .42), rgba(5, 22, 47, .92));
  border: 1px solid var(--about-border);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.page-about .about-team__card:hover {
  transform: translateY(-4px);
  border-color: rgba(200, 255, 61, .42);
}

.page-about .about-team__count {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--lime);
}

.page-about .about-team__count small {
  margin-left: 4px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--mist);
}

.page-about .about-team__card h3 {
  margin: 12px 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 合作伙伴 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 18px;
}

.page-about .about-partner {
  position: relative;
  padding: 28px 26px;
  border-radius: var(--r-lg);
  border: 1px solid var(--about-border);
  background: rgba(12, 44, 92, .42);
}

.page-about .about-partner--lead {
  border-color: rgba(200, 255, 61, .3);
  background: linear-gradient(150deg, rgba(200, 255, 61, .1), rgba(12, 44, 92, .5) 62%);
}

.page-about .about-partner__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--lime);
}

.page-about .about-partner h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

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

.page-about .about-aside {
  margin: 26px 0 0;
  padding: 16px 20px;
  border-left: 3px solid var(--ember);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(255, 90, 43, .07);
  font-size: 15px;
  line-height: 1.8;
  color: rgba(228, 237, 250, .84);
}

/* ---------- 认可与规模 ---------- */
.page-about .about-honors {
  display: grid;
  gap: 30px;
}

.page-about .about-honor {
  display: flex;
  gap: 16px;
  padding: 22px 22px 24px;
  border-radius: var(--r-lg);
  border: 1px solid var(--about-border);
  background: rgba(12, 44, 92, .4);
}

.page-about .about-honor__icon {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(200, 255, 61, .34);
  background: rgba(200, 255, 61, .1);
  color: var(--lime);
}

.page-about .about-honor__year {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--lime);
}

.page-about .about-honor h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: #fff;
}

.page-about .about-honor p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-metrics {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(128px, 1fr));
  margin: 26px 0 0;
  padding: 0;
}

.page-about .about-metrics__item {
  padding: 16px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--about-border);
  background: rgba(5, 22, 47, .6);
}

.page-about .about-metrics dt {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--lime);
}

.page-about .about-metrics dt span {
  margin-left: 2px;
  font-size: 14px;
  font-weight: 500;
  color: var(--lime-deep);
}

.page-about .about-metrics dd {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-honors__media {
  margin: 0 auto;
  width: 100%;
  max-width: 420px;
}

/* ---------- 收束 ---------- */
.page-about .about-next {
  display: grid;
  gap: 16px;
  max-width: 62ch;
}

.page-about .about-next p {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(228, 237, 250, .86);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-about .about-team {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-team > :nth-child(3) {
    margin-top: 52px;
  }

  .page-about .about-partners {
    grid-template-columns: 1.15fr .85fr;
    gap: 22px;
  }
}

@media (min-width: 900px) {
  .page-about .about-head {
    grid-template-columns: 156px minmax(0, 1fr);
    align-items: center;
    gap: 28px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(34px, 5vw, 64px);
    align-items: center;
  }

  .page-about .about-split--flip .about-split__media {
    order: -1;
  }

  .page-about .about-honors {
    grid-template-columns: minmax(0, 1fr) 400px;
    gap: clamp(36px, 5vw, 56px);
    align-items: center;
  }

  .page-about .about-honors__media {
    margin: 0;
    max-width: none;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    grid-template-columns: 7fr 5fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-hero__visual {
    aspect-ratio: 1 / 1;
    max-height: 470px;
  }

  .page-about .about-split__media {
    margin-top: -18px;
  }

  .page-about .about-split--flip .about-split__media {
    margin-top: 22px;
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .pitch-line {
    animation: none;
    stroke-dashoffset: 0;
  }

  .page-about .about-visual__dot {
    animation: none;
  }

  .page-about .about-team__card {
    transition: none;
  }

  .page-about .about-team__card:hover {
    transform: none;
  }
}
<<<END>>>