/* ============================================
   page-about · 品牌理念
   作用域限定：.page-about
   ============================================ */

.page-about {
  --about-narrow: 120px;
  position: relative;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.5vw, 52px) 0 clamp(58px, 9vw, 112px);
  background:
    radial-gradient(116% 84% at 86% 0%, rgba(123, 92, 255, .34), transparent 56%),
    radial-gradient(72% 60% at 2% 96%, rgba(55, 227, 216, .12), transparent 64%),
    linear-gradient(176deg, var(--ink) 0%, var(--ink-2) 86%, var(--ink) 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  right: -14%;
  bottom: -8%;
  width: min(760px, 82%);
  height: 68%;
  background: linear-gradient(148deg, rgba(123, 92, 255, .22), rgba(123, 92, 255, 0) 74%);
  clip-path: polygon(26% 0%, 100% 0%, 100% 100%, 0% 100%);
  pointer-events: none;
}

.page-about .hero-starfield {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: block;
  pointer-events: none;
  opacity: .85;
  background-image:
    radial-gradient(1.6px 1.6px at 7% 18%, rgba(228, 232, 245, .82), transparent 62%),
    radial-gradient(1.2px 1.2px at 21% 64%, rgba(228, 232, 245, .52), transparent 62%),
    radial-gradient(1.9px 1.9px at 39% 11%, rgba(183, 166, 255, .76), transparent 62%),
    radial-gradient(1.3px 1.3px at 55% 76%, rgba(228, 232, 245, .48), transparent 62%),
    radial-gradient(2.1px 2.1px at 71% 29%, rgba(55, 227, 216, .70), transparent 62%),
    radial-gradient(1.2px 1.2px at 86% 57%, rgba(228, 232, 245, .58), transparent 62%),
    radial-gradient(1.5px 1.5px at 95% 15%, rgba(201, 160, 255, .64), transparent 62%);
}

.page-about .hero-orb {
  position: absolute;
  z-index: 0;
  display: block;
  border-radius: 50%;
  filter: blur(48px);
  pointer-events: none;
  animation: about-breathe 11s ease-in-out infinite;
}

.page-about .hero-orb--violet {
  width: 390px;
  height: 390px;
  top: -110px;
  right: -70px;
  background: radial-gradient(circle, rgba(123, 92, 255, .44), transparent 70%);
}

.page-about .hero-orb--cyan {
  width: 300px;
  height: 300px;
  bottom: -130px;
  left: -90px;
  background: radial-gradient(circle, rgba(55, 227, 216, .26), transparent 72%);
  animation-delay: -4.5s;
}

@keyframes about-breathe {
  0%, 100% { opacity: .68; transform: scale(1); }
  50%      { opacity: 1;   transform: scale(1.07); }
}

.page-about .hero-inner {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 10px;
  margin: 0 0 clamp(22px, 4vw, 40px);
  padding: 0;
  list-style: none;
  font-size: var(--fs-xs);
  color: var(--orbit);
}

.page-about .breadcrumb li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .breadcrumb a {
  color: var(--orbit);
  text-decoration: none;
  transition: color var(--t);
}

.page-about .breadcrumb a:hover {
  color: var(--cyan);
}

.page-about .breadcrumb li:not(:last-child)::after {
  content: "";
  width: 12px;
  height: 1px;
  background: rgba(110, 120, 147, .7);
}

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

.page-about .hero-split {
  display: grid;
  gap: 30px;
}

.page-about .hero-lead h1 {
  margin: 12px 0 0;
  max-width: 13ch;
  font-size: clamp(2.3rem, 7.4vw, 4.5rem);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -.025em;
  color: var(--white);
  text-shadow: 0 0 38px rgba(55, 227, 216, .22);
}

.page-about .hero-copy .lede {
  margin: 0;
  color: var(--silver);
  font-size: var(--fs-base);
  line-height: 1.8;
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px clamp(28px, 5vw, 64px);
  margin: clamp(38px, 7vw, 72px) 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}

.page-about .hero-stat dt {
  margin: 0 0 6px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--orbit);
}

.page-about .hero-stat dd {
  margin: 0;
  font-size: var(--fs-md);
  color: var(--cyan);
  letter-spacing: .01em;
}

@media (min-width: 900px) {
  .page-about .hero-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(36px, 5.5vw, 84px);
  }
}

/* ---------- 从一条轨道开始 ---------- */

.page-about .origin {
  position: relative;
  padding: clamp(64px, 10vw, 128px) 0 clamp(56px, 9vw, 108px);
}

.page-about .origin-grid {
  display: grid;
  gap: 24px;
}

.page-about .origin-rail {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 16px;
  padding-top: 4px;
}

.page-about .rail-note {
  margin: 0;
  max-width: 18ch;
  font-size: 12.5px;
  line-height: 1.75;
  letter-spacing: .03em;
  color: var(--orbit);
}

.page-about .rail-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), rgba(55, 227, 216, 0) 90%);
}

.page-about .origin-body h2 {
  margin: 0 0 18px;
  font-size: clamp(1.75rem, 3.6vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-about .origin-lede {
  margin: 0 0 20px;
  max-width: 46ch;
  font-size: var(--fs-md);
  line-height: 1.7;
  color: var(--violet-2);
}

.page-about .origin-body > p {
  margin: 0 0 18px;
  max-width: 68ch;
  color: var(--silver);
  line-height: 1.85;
}

.page-about .origin-points {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .origin-points li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
  transition: border-color var(--t);
}

.page-about .origin-points li:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-about .origin-points li:hover {
  border-color: rgba(55, 227, 216, .45);
}

.page-about .point-index {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-about .origin-points p {
  margin: 0;
  max-width: 62ch;
  color: var(--silver);
  line-height: 1.8;
}

@media (min-width: 1024px) {
  .page-about .origin-grid {
    grid-template-columns: minmax(120px, 1fr) minmax(0, 2.7fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .origin-rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    height: 100%;
  }

  .page-about .rail-line {
    width: 1px;
    height: auto;
    flex: 1;
    min-height: 140px;
    background: linear-gradient(180deg, var(--cyan), rgba(55, 227, 216, 0) 92%);
  }
}

/* ---------- 三条产品信条 ---------- */

.page-about .creed {
  position: relative;
  padding: clamp(56px, 9vw, 112px) 0;
}

.page-about .creed-head {
  max-width: 62ch;
  margin-bottom: clamp(30px, 5vw, 52px);
}

.page-about .creed-head h2 {
  margin: 12px 0 14px;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-about .creed-head .lede {
  margin: 0;
  color: var(--silver);
  line-height: 1.85;
}

.page-about .creed-tabs .segmented {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  width: fit-content;
  max-width: 100%;
  padding: 6px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  background: rgba(18, 26, 56, .55);
}

.page-about .segmented-btn {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--orbit);
  font: inherit;
  font-size: var(--fs-sm);
  padding: 10px 18px;
  border-radius: var(--r-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--t), background var(--t), box-shadow var(--t), border-color var(--t);
}

.page-about .segmented-btn:hover {
  color: var(--silver);
}

.page-about .segmented-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-about .segmented-btn[aria-selected="true"] {
  color: var(--ink);
  background: linear-gradient(120deg, var(--cyan), var(--violet-2));
  box-shadow: 0 6px 22px rgba(55, 227, 216, .24);
}

.page-about .creed-panels {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .creed-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4vw, 46px) clamp(22px, 4vw, 54px);
  border-radius: var(--r-xl);
  background:
    radial-gradient(120% 100% at 0% 0%, rgba(123, 92, 255, .16), transparent 60%),
    var(--panel);
  box-shadow: var(--shadow-panel);
}

.page-about .creed-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14%;
  bottom: 14%;
  width: 2px;
  border-radius: 0 2px 2px 0;
  background: linear-gradient(180deg, transparent, var(--cyan), transparent);
}

.page-about .creed-panel[hidden],
.page-about .creed-panel[aria-hidden="true"] {
  display: none;
}

.page-about .creed-panel > p {
  margin: 0 0 16px;
  max-width: 64ch;
  color: var(--silver);
  line-height: 1.85;
}

.page-about .creed-panel .creed-line {
  margin: 0 0 16px;
  max-width: 34ch;
  font-size: clamp(1.15rem, 2.2vw, 1.6rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-about .creed-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .creed-list li {
  position: relative;
  padding-left: 22px;
  max-width: 62ch;
  color: var(--silver);
  line-height: 1.75;
}

.page-about .creed-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(55, 227, 216, .7);
}

/* ---------- 星轨历程 ---------- */

.page-about .track {
  position: relative;
  overflow: hidden;
  padding: clamp(64px, 10vw, 130px) 0;
  background: linear-gradient(180deg, transparent, rgba(11, 18, 43, .55) 30%, rgba(11, 18, 43, .55) 70%, transparent);
}

.page-about .track-visual {
  position: absolute;
  inset: 4% -8% auto -8%;
  height: 58%;
  opacity: .26;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 20%, #000 70%, transparent);
  mask-image: linear-gradient(180deg, transparent, #000 20%, #000 70%, transparent);
}

.page-about .track-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .track > .container {
  position: relative;
  z-index: 1;
}

.page-about .track-head {
  max-width: 58ch;
  margin-bottom: clamp(34px, 6vw, 64px);
}

.page-about .track-head h2 {
  margin: 12px 0 14px;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-about .track-head .lede {
  margin: 0;
  color: var(--silver);
  line-height: 1.85;
}

.page-about .track-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .track-list::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 68px;
  width: 1px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, transparent, rgba(123, 92, 255, .55) 6%, rgba(123, 92, 255, .55) 94%, transparent);
}

.page-about .track-item {
  position: relative;
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .track-item:first-child {
  border-top: 1px solid var(--line-soft);
}

.page-about .track-item::before {
  content: "";
  position: absolute;
  z-index: 1;
  top: 33px;
  left: 68px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 1.5px solid var(--violet);
  transform: translateX(-50%);
  transition: border-color var(--t), background var(--t), box-shadow var(--t);
}

.page-about .track-item:hover::before,
.page-about .track-item:focus-within::before {
  border-color: var(--cyan);
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(55, 227, 216, .14), 0 0 18px rgba(55, 227, 216, .55);
}

.page-about .track-year {
  display: block;
  padding-top: 1px;
  font-size: 1.05rem;
  line-height: 1.35;
  letter-spacing: .02em;
  color: var(--violet-2);
  transition: color var(--t);
}

.page-about .track-item:hover .track-year {
  color: var(--cyan);
}

.page-about .track-body h3 {
  margin: 0 0 8px;
  font-size: var(--fs-md);
  font-weight: 700;
  letter-spacing: -.005em;
  color: var(--white);
}

.page-about .track-body p {
  margin: 0;
  max-width: 62ch;
  color: var(--silver);
  line-height: 1.8;
}

@media (min-width: 1024px) {
  .page-about .track-list::before {
    left: var(--about-narrow);
  }

  .page-about .track-item {
    grid-template-columns: var(--about-narrow) minmax(0, 1fr);
    gap: clamp(26px, 4vw, 52px);
    padding: 32px 0;
  }

  .page-about .track-item::before {
    left: var(--about-narrow);
    top: 38px;
  }

  .page-about .track-year {
    font-size: clamp(1.2rem, 2vw, 1.75rem);
  }
}

/* ---------- 一起把产品做顺的人 ---------- */

.page-about .team {
  padding: clamp(56px, 9vw, 112px) 0;
}

.page-about .team-grid {
  display: grid;
  gap: 30px;
}

.page-about .team-media {
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-xl);
  background: var(--ink-2);
  box-shadow: var(--shadow-panel);
}

.page-about .team-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .team-media figcaption {
  margin: 0;
  padding: 14px 20px 16px;
  border-top: 1px solid var(--line-soft);
  background: rgba(11, 18, 43, .85);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--orbit);
}

.page-about .team-body h2,
.page-about .promise-body h2 {
  margin: 12px 0 16px;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-about .team-body > p,
.page-about .promise-body > p {
  margin: 0 0 16px;
  max-width: 60ch;
  color: var(--silver);
  line-height: 1.85;
}

.page-about .team-roster {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .team-roster li {
  display: grid;
  grid-template-columns: 66px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .team-roster li:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-about .roster-num {
  font-size: var(--fs-lg);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .roster-label {
  color: var(--silver);
  line-height: 1.7;
}

@media (min-width: 1024px) {
  .page-about .team-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 80px);
    align-items: center;
  }
}

/* ---------- 持续更新的承诺 ---------- */

.page-about .promise {
  padding: clamp(56px, 9vw, 118px) 0;
}

.page-about .promise-grid {
  display: grid;
  gap: 30px;
}

.page-about .promise-facts {
  display: grid;
  gap: 0;
  margin: 30px 0 0;
}

.page-about .promise-fact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
}

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

.page-about .promise-fact dt {
  font-size: var(--fs-sm);
  color: var(--orbit);
}

.page-about .promise-fact dd {
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--cyan);
  white-space: nowrap;
}

.page-about .promise-link {
  margin: 30px 0 0;
}

.page-about .promise-media {
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-panel);
}

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

@media (min-width: 1024px) {
  .page-about .promise-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: clamp(40px, 5.5vw, 84px);
    align-items: center;
  }
}

/* ---------- 想更进一步了解 ---------- */

.page-about .further {
  padding: clamp(56px, 9vw, 116px) 0 clamp(72px, 11vw, 140px);
}

.page-about .further-head {
  max-width: 52ch;
  margin-bottom: clamp(28px, 4.5vw, 48px);
}

.page-about .further-head h2 {
  margin: 12px 0 0;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.015em;
  color: var(--white);
}

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

.page-about .further-item {
  border-top: 1px solid var(--line-soft);
}

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

.page-about .further-item a {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 30px;
  gap: 18px;
  align-items: center;
  padding: 24px 8px;
  border-radius: var(--r-md);
  text-decoration: none;
  transition: background var(--t), padding-left var(--t);
}

.page-about .further-item a:hover,
.page-about .further-item a:focus-visible {
  background: rgba(123, 92, 255, .12);
  padding-left: 20px;
}

.page-about .further-num {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-about .further-text {
  display: grid;
  gap: 6px;
}

.page-about .further-text strong {
  font-size: var(--fs-md);
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-about .further-text span {
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--orbit);
  transition: color var(--t);
}

.page-about .further-item a:hover .further-text span {
  color: var(--silver);
}

.page-about .further-arrow {
  font-size: var(--fs-lg);
  text-align: right;
  color: var(--violet-2);
  transition: transform var(--t), color var(--t);
}

.page-about .further-item a:hover .further-arrow {
  transform: translateX(4px);
  color: var(--cyan);
}

@media (max-width: 599px) {
  .page-about .further-item a {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 12px;
    padding: 20px 6px;
  }

  .page-about .further-arrow {
    display: none;
  }

  .page-about .further-item a:hover,
  .page-about .further-item a:focus-visible {
    padding-left: 14px;
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about .hero-orb {
    animation: none;
  }

  .page-about .track-item::before,
  .page-about .track-year,
  .page-about .further-arrow,
  .page-about .further-item a,
  .page-about .further-text span {
    transition: none;
  }

  .page-about .further-item a:hover .further-arrow {
    transform: none;
  }
}
<<<END>>>