.page-about {
  --page-about-radius: 2px;
  --page-about-line: var(--border);
  --page-about-glow-purple: 0 0 14px rgba(177, 77, 255, .4);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about .container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-heading);
  line-height: 1.08;
  letter-spacing: .02em;
}

.page-about h2 {
  font-size: clamp(34px, 5vw, 56px);
  margin: 0;
}

.page-about h3 {
  font-size: clamp(20px, 2vw, 26px);
  margin: 0 0 .75rem;
}

.page-about p {
  margin: 0 0 1em;
}

.page-about a {
  color: inherit;
  text-decoration: none;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.page-about .breadcrumb__item {
  color: inherit;
}

.page-about .breadcrumb__item[aria-current="page"] {
  color: var(--accent-purple);
}

.page-about .tag {
  display: inline-block;
  border: 1px solid var(--border-bright);
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  letter-spacing: .05em;
  padding: .4rem .8rem;
  transition: border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.page-about .tag:hover {
  border-color: var(--accent-purple);
  color: var(--text-primary);
  box-shadow: var(--page-about-glow-purple);
}

.page-about .index-label {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--accent-blue);
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  padding-bottom: .4rem;
}

.page-about .neon-link {
  color: var(--accent-blue);
  border-bottom: 1px solid rgba(0, 229, 255, .35);
  transition: color var(--transition-fast), border-color var(--transition-fast), text-shadow var(--transition-fast);
}

.page-about .neon-link:hover {
  color: var(--accent-purple);
  border-color: var(--accent-purple);
  text-shadow: 0 0 12px rgba(177, 77, 255, .5);
}

.page-about .btn--primary {
  display: inline-block;
  background: var(--accent-purple);
  color: #0a0a0f;
  border: 1px solid var(--accent-purple);
  padding: .85rem 1.8rem;
  font-family: var(--font-heading);
  font-size: 15px;
  letter-spacing: .08em;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.page-about .btn--primary:hover {
  box-shadow: var(--shadow-neon-purple), 0 0 28px rgba(177, 77, 255, .25);
  transform: translateY(-2px);
}

.page-about .btn--ghost {
  display: inline-block;
  border: 1px solid var(--border-bright);
  color: var(--text-secondary);
  padding: .85rem 1.8rem;
  font-family: var(--font-heading);
  font-size: 15px;
  letter-spacing: .08em;
  transition: border-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.page-about .btn--ghost:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  box-shadow: var(--shadow-neon-blue);
  transform: translateY(-2px);
}

/* 通用大编号 */
.page-about__index {
  display: block;
  font-family: var(--font-heading);
  font-size: 72px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--accent-purple);
  letter-spacing: .04em;
  margin-bottom: 1rem;
}

/* ========== HERO ========== */
.page-about__hero {
  position: relative;
  isolation: isolate;
  padding: clamp(36px, 7vw, 96px) 0 56px;
  background-image:
    linear-gradient(rgba(177, 77, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(177, 77, 255, .05) 1px, transparent 1px);
  background-size: 48px 48px;
}

.page-about__hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue), var(--accent-pink));
  z-index: 0;
}

.page-about__hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.page-about__hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}

.page-about__eyebrow {
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent-purple);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-purple);
  padding: .35rem .8rem;
  margin: 0;
}

.page-about__hero h1 {
  font-size: clamp(48px, 8vw, 96px);
  margin: .2rem 0;
  color: var(--text-primary);
}

.page-about__lead {
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 58ch;
  margin: 0;
}

.page-about__hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: .5rem;
}

.page-about__hero-visual {
  position: relative;
  max-width: 440px;
  margin-inline: auto;
}

.page-about__hero-frame {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border: 1px solid var(--border-bright);
  background: var(--bg-secondary);
  transform: rotate(-1.2deg);
  position: relative;
  box-shadow: var(--shadow-panel);
}

.page-about__hero-frame::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(177, 77, 255, .3);
  z-index: 1;
  pointer-events: none;
}

.page-about__hero-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about__hero-badge {
  position: absolute;
  bottom: -18px;
  left: -14px;
  background: var(--accent-purple);
  color: #0a0a0f;
  font-family: var(--font-heading);
  padding: .5rem 1rem;
  display: flex;
  flex-direction: column;
  line-height: 1;
  transform: rotate(-4deg);
  box-shadow: var(--shadow-neon-purple);
  border-radius: var(--page-about-radius);
}

.page-about__hero-badge span {
  font-size: 12px;
  letter-spacing: .2em;
  opacity: .8;
}

.page-about__hero-badge strong {
  font-size: 28px;
}

/* ========== 品牌溯源 ========== */
.page-about__origin {
  padding: clamp(56px, 8vw, 96px) 0;
  border-bottom: 1px solid var(--border);
}

.page-about__origin-grid {
  display: grid;
  gap: 2.5rem;
  align-items: start;
}

.page-about__origin-intro h2 {
  margin: 0;
}

.page-about__origin-text p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.9;
}

.page-about__origin-text p + p {
  margin-top: 1.25rem;
}

/* ========== 内容规模 ========== */
.page-about__scale {
  position: relative;
  padding: clamp(56px, 8vw, 96px) 0;
  background: var(--bg-secondary);
}

.page-about__scale::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, .04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.page-about__scale-head {
  position: relative;
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.page-about__scale-head p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  margin: 0;
  align-self: end;
}

.page-about__stats-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

.page-about__stat-card {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent-purple);
  background: rgba(26, 26, 36, .88);
  position: relative;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.page-about__stat-card:nth-child(2) {
  border-top-color: var(--accent-blue);
}

.page-about__stat-card:nth-child(3) {
  border-top-color: var(--accent-pink);
}

.page-about__stat-card:nth-child(4) {
  border-top-color: var(--accent-warning);
}

.page-about__stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-bright);
  box-shadow: var(--shadow-panel);
}

.page-about__stat-num {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1;
  color: var(--text-primary);
  margin-bottom: .5rem;
  animation: page-about-stat-pulse 3.6s ease-in-out infinite;
}

.page-about__stat-card:nth-child(1) .page-about__stat-num {
  text-shadow: 0 0 18px rgba(177, 77, 255, .4);
}

.page-about__stat-card:nth-child(2) .page-about__stat-num {
  text-shadow: 0 0 18px rgba(0, 229, 255, .35);
  animation-delay: .5s;
}

.page-about__stat-card:nth-child(3) .page-about__stat-num {
  text-shadow: 0 0 18px rgba(255, 122, 198, .35);
  animation-delay: 1s;
}

.page-about__stat-card:nth-child(4) .page-about__stat-num {
  text-shadow: 0 0 18px rgba(255, 184, 0, .3);
  animation-delay: 1.5s;
}

@keyframes page-about-stat-pulse {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: .88;
    filter: brightness(1.18);
  }
}

.page-about__stat-label {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: .35rem;
}

.page-about__stat-foot {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.page-about__scale-lower {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.5rem;
}

.page-about__catalog {
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--border);
  border-right: 3px solid var(--accent-blue);
  background: var(--bg-panel);
  display: flex;
  flex-direction: column;
}

.page-about__catalog-head {
  margin-bottom: 1.5rem;
}

.page-about__catalog-head h3 {
  margin: .75rem 0 0;
  color: var(--text-primary);
}

.page-about__catalog-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  flex: 1;
}

.page-about__catalog-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-blue);
  letter-spacing: .1em;
  margin: 0 0 .75rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: .5rem;
}

.page-about__catalog-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .5rem;
}

.page-about__catalog-col li {
  font-size: 15px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: .5rem;
}

.page-about__dot {
  width: 8px;
  height: 8px;
  display: inline-block;
  background: var(--accent-purple);
  flex-shrink: 0;
}

.page-about__dot--blue {
  background: var(--accent-blue);
}

.page-about__dot--pink {
  background: var(--accent-pink);
}

.page-about__chart {
  display: flex;
  align-items: stretch;
}

.page-about__chart-frame {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  position: relative;
}

.page-about__chart-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px dashed rgba(177, 77, 255, .35);
  margin: 10px;
  pointer-events: none;
}

.page-about__chart-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about__scale-note {
  position: relative;
  z-index: 1;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  margin-top: 2rem;
}

/* ========== 发展历程 ========== */
.page-about__history {
  padding: clamp(56px, 8vw, 96px) 0;
  position: relative;
  background: var(--bg-primary);
}

.page-about__history-head {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.page-about__history-head p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  margin: 0;
  align-self: end;
}

.page-about__timeline-wrap {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: clamp(24px, 4vw, 44px) clamp(16px, 4vw, 40px);
  clip-path: polygon(0 1.5%, 100% 0, 100% 98.5%, 0 100%);
}

.page-about__timeline-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: .45;
  pointer-events: none;
}

.page-about__timeline-svg path {
  stroke: var(--accent-purple);
  stroke-width: 2;
}

.page-about__timeline-svg circle:nth-child(1) {
  fill: var(--accent-purple);
}

.page-about__timeline-svg circle:nth-child(2) {
  fill: var(--accent-blue);
}

.page-about__timeline-svg circle:nth-child(3) {
  fill: var(--accent-pink);
}

.page-about__timeline-svg circle:nth-child(4) {
  fill: var(--accent-blue);
}

.page-about__timeline-svg circle:nth-child(5) {
  fill: var(--accent-pink);
}

.page-about__timeline-svg circle:nth-child(6) {
  fill: var(--accent-purple);
}

.page-about__timeline-track {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about__tl-card {
  position: relative;
  padding: 1.5rem;
  background: rgba(26, 26, 36, .92);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-purple);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.page-about__tl-card:hover,
.page-about__tl-card:focus-within {
  transform: translateY(-6px);
  border-color: var(--border-bright);
  box-shadow: var(--page-about-glow-purple);
}

.page-about__tl-card:nth-child(2n) {
  border-left-color: var(--accent-blue);
}

.page-about__tl-card:nth-child(3n) {
  border-left-color: var(--accent-pink);
}

.page-about__tl-year {
  font-family: var(--font-heading);
  font-size: 42px;
  line-height: 1;
  color: var(--accent-purple);
}

.page-about__tl-card:nth-child(2n) .page-about__tl-year {
  color: var(--accent-blue);
}

.page-about__tl-card:nth-child(3n) .page-about__tl-year {
  color: var(--accent-pink);
}

.page-about__tl-card h3 {
  font-size: 22px;
  margin: .75rem 0 .5rem;
}

.page-about__tl-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0;
}

.page-about__history-note {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 1.75rem;
}

/* ========== 团队与组织 ========== */
.page-about__team {
  padding: clamp(56px, 8vw, 96px) 0;
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
}

.page-about__team-grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.page-about__team-copy h2 {
  margin: .5rem 0 1.5rem;
}

.page-about__team-copy > p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.9;
}

.page-about__team-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .75rem;
  margin-top: 2rem;
}

.page-about__team-card {
  border: 1px solid var(--border);
  background: var(--bg-panel);
  padding: 1.25rem .75rem;
  text-align: center;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.page-about__team-card:hover {
  border-color: rgba(0, 229, 255, .6);
  box-shadow: var(--shadow-neon-blue);
}

.page-about__team-card strong {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(28px, 4vw, 36px);
  color: var(--accent-blue);
  line-height: 1.1;
}

.page-about__team-card span {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: .4rem;
}

.page-about__team-visual {
  position: relative;
}

.page-about__img-wrap {
  border: 1px solid var(--border);
  overflow: hidden;
  background: var(--bg-secondary);
  position: relative;
  box-shadow: var(--shadow-panel);
}

.page-about__img-wrap img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.page-about__img-wrap:hover img {
  transform: scale(1.02);
}

/* ========== 合规与资质 ========== */
.page-about__compliance {
  padding: clamp(56px, 8vw, 96px) 0;
  background: var(--bg-secondary);
  position: relative;
}

.page-about__compliance::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 122, 198, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 122, 198, .04) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}

.page-about__compliance-panel {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.page-about__compliance-title h2 {
  margin: .5rem 0 0;
}

.page-about__compliance-list {
  display: grid;
  gap: 1.5rem;
}

.page-about__compliance-item {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent-pink);
  align-items: flex-start;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.page-about__compliance-item:hover {
  border-color: var(--border-bright);
  box-shadow: var(--shadow-panel);
}

.page-about__compliance-badge {
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--accent-pink);
  border: 1px solid rgba(255, 122, 198, .4);
  padding: .35rem .6rem;
  flex-shrink: 0;
}

.page-about__compliance-item h3 {
  font-size: 18px;
  margin: 0 0 .5rem;
}

.page-about__compliance-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.page-about__compliance-note {
  position: relative;
  z-index: 1;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
}

/* ========== 使命与愿景 ========== */
.page-about__mission {
  padding: clamp(80px, 10vw, 120px) 0;
  background: var(--bg-primary);
  position: relative;
}

.page-about__mission::after {
  content: "";
  position: absolute;
  right: 5%;
  bottom: 0;
  width: 40%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-pink), transparent);
}

.page-about__mission-inner {
  max-width: 780px;
}

.page-about__mission h2 {
  margin: .5rem 0 1.5rem;
}

.page-about__mission-lead {
  font-family: var(--font-heading);
  font-size: clamp(24px, 3.5vw, 36px);
  line-height: 1.4;
  color: var(--text-primary);
  margin: 1.5rem 0;
}

.page-about__mission-inner p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.9;
}

.page-about__mission-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.5rem;
}

/* ========== 响应式 ========== */
@media (min-width: 640px) {
  .page-about__stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 900px) {
  .page-about__index {
    font-size: 112px;
  }

  .page-about__hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 3rem;
  }

  .page-about__origin-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 4rem;
  }

  .page-about__scale-head {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-about__scale-lower {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 2rem;
    align-items: stretch;
  }

  .page-about__history-head {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-about__team-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 4rem;
  }

  .page-about__compliance-panel {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about__stats-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about__timeline-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
  }
}