.page-about {
  --about-ink: #263040;
  overflow-x: hidden;
}

/* ===== 英雄区 ===== */
.page-about .page-about-hero {
  position: relative;
  padding: 116px 0 44px;
  background:
    radial-gradient(circle at 82% 18%, rgba(108, 75, 142, .32), transparent 44%),
    radial-gradient(circle at 12% 82%, rgba(242, 182, 50, .10), transparent 38%),
    linear-gradient(135deg, #061126 0%, #0A1F44 58%, #0E2A5E 100%);
  border-bottom: 1px solid var(--border-light);
}
.page-about .page-about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(230, 232, 238, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(230, 232, 238, .045) 1px, transparent 1px);
  background-size: 42px 42px;
  pointer-events: none;
}
.page-about .page-about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 4px;
  background: linear-gradient(90deg, var(--c-banner-blue), var(--c-banner-red), var(--c-accent), var(--c-moss), var(--c-nebula));
  opacity: .7;
}
.page-about .page-about-hero-inner {
  position: relative;
  z-index: 1;
}
.page-about .page-about-hero .page-hero-frame {
  position: absolute;
  inset: 18px 14px;
  pointer-events: none;
  border: 1px solid rgba(230, 232, 238, .16);
  border-radius: var(--radius-md);
  z-index: 0;
}
.page-about .page-about-hero .page-hero-frame i {
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: var(--c-accent);
  border-style: solid;
}
.page-about .page-about-hero .page-hero-frame i:nth-child(1) { top: -1px; left: -1px; border-width: 2px 0 0 2px; border-radius: var(--radius-md) 0 0 0; }
.page-about .page-about-hero .page-hero-frame i:nth-child(2) { top: -1px; right: -1px; border-width: 2px 2px 0 0; border-radius: 0 var(--radius-md) 0 0; }
.page-about .page-about-hero .page-hero-frame i:nth-child(3) { bottom: -1px; left: -1px; border-width: 0 0 2px 2px; border-radius: 0 0 0 var(--radius-md); }
.page-about .page-about-hero .page-hero-frame i:nth-child(4) { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; border-radius: 0 0 var(--radius-md) 0; }
.page-about .page-about-kicker {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-top: 34px;
}
.page-about .page-about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  color: var(--c-cream);
  letter-spacing: .02em;
  margin: 14px 0 18px;
}
.page-about .page-about-hero-desc {
  max-width: 660px;
  color: rgba(230, 232, 238, .82);
  font-size: 17px;
  line-height: 1.75;
}
.page-about .page-about-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 42px;
  margin-top: 38px;
  padding-top: 30px;
  border-top: 1px solid var(--glass-border);
}
.page-about .page-about-hero-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.page-about .page-about-hero-stats .stat-number {
  color: var(--c-accent);
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}
.page-about .page-about-hero-stats .stat-label {
  color: var(--text-muted);
  font-size: 13px;
  letter-spacing: .1em;
}

/* ===== 页内章节导航 ===== */
.page-about .page-about-nav {
  position: sticky;
  top: var(--header-height);
  z-index: 30;
  background: rgba(6, 17, 38, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  padding: 12px 0;
}
.page-about .page-about-nav-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 12px;
}
.page-about .page-about-nav .section-nav-title {
  flex-shrink: 0;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--text-muted);
  padding-right: 14px;
  border-right: 1px solid var(--border-light);
}
.page-about .page-about-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.page-about .page-about-nav-links a {
  display: inline-block;
  font-size: 14px;
  color: var(--text-muted);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: background .2s, color .2s;
}
.page-about .page-about-nav-links a:hover,
.page-about .page-about-nav-links a[data-active] {
  background: rgba(242, 182, 50, .14);
  color: var(--c-accent);
}

/* ===== 通用区块 ===== */
.page-about .page-about-section {
  position: relative;
  scroll-margin-top: calc(var(--header-height) + 62px);
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
}
.page-about .page-about-section-head {
  margin-bottom: 32px;
}
.page-about .page-about-section-head .section-kicker {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-accent);
}
.page-about .page-about-section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.6vw, 2.5rem);
  color: var(--c-cream);
  margin: 10px 0 12px;
}
.page-about .page-about-section-head .section-desc {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
  max-width: 680px;
}

/* ===== 品牌故事 ===== */
.page-about .page-about-story {
  background:
    linear-gradient(rgba(230, 232, 238, .03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(230, 232, 238, .03) 1px, transparent 1px);
  background-size: 56px 56px;
}
.page-about .page-about-story-grid {
  display: grid;
  gap: 34px;
  align-items: center;
}
.page-about .page-about-story-media {
  position: relative;
}
.page-about .page-about-story-media .media-frame {
  background: var(--bg-elevated);
  border: 1px solid var(--glass-border);
}
.page-about .page-about-story-media img,
.page-about .page-about-honor-media img {
  display: block;
  max-width: 100%;
  height: auto;
}
.page-about .page-about-story-num {
  position: absolute;
  top: -26px;
  right: -6px;
  font-family: var(--font-display);
  font-size: 76px;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(242, 182, 50, .5);
  pointer-events: none;
  user-select: none;
}
.page-about .page-about-story-copy .prose {
  color: rgba(230, 232, 238, .82);
}
.page-about .page-about-story-copy .prose p + p {
  margin-top: 14px;
}
.page-about .page-about-story-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.page-about .page-about-story-tags .tag {
  font-size: 14px;
}

/* ===== 发展历程 ===== */
.page-about .page-about-journey {
  background: var(--bg-deep);
  overflow: hidden;
}
.page-about .page-about-journey-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.page-about .page-about-journey-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .14;
  transform: scale(1.04) rotate(-1.2deg);
}
.page-about .page-about-journey-wrap {
  position: relative;
  display: grid;
  gap: 18px;
  max-width: 900px;
}
.page-about .page-about-journey-line {
  position: absolute;
  left: 13px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-slate), var(--c-banner-blue), var(--c-moss), var(--c-accent));
  opacity: .45;
  border-radius: 99px;
}
.page-about .page-about-journey-item {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 14px;
  align-items: start;
}
.page-about .page-about-journey-dot {
  width: 28px;
  height: 28px;
  margin-top: 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--bg-body);
  background: var(--c-slate);
  box-shadow: 0 0 0 4px rgba(6, 17, 38, .8);
  position: relative;
  z-index: 2;
}
.page-about .page-about-journey-dot--v2 { background: var(--c-banner-blue); }
.page-about .page-about-journey-dot--v3 { background: var(--c-moss); }
.page-about .page-about-journey-dot--v4 { background: var(--c-accent); }
.page-about .page-about-journey-card {
  background: var(--c-cream);
  color: var(--about-ink);
  border: none;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .22);
}
.page-about .page-about-journey-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  color: inherit;
  border: none;
  background: none;
  font-family: var(--font-body);
  padding: 20px 18px 18px;
  border-bottom: 1px solid rgba(10, 31, 68, .12);
  cursor: pointer;
  text-align: left;
}
.page-about .page-about-journey-year {
  flex-shrink: 0;
  width: 58px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-align: center;
  color: #fff;
  background: var(--c-slate);
  border-radius: 7px;
  padding: 6px 0;
}
.page-about .page-about-journey-item:nth-child(2) .page-about-journey-year { background: var(--c-banner-blue); }
.page-about .page-about-journey-item:nth-child(3) .page-about-journey-year { background: var(--c-moss); }
.page-about .page-about-journey-item:nth-child(4) .page-about-journey-year { background: var(--c-accent); color: var(--bg-body); }
.page-about .page-about-journey-title {
  flex: 1;
  text-align: left;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: .05em;
  color: var(--bg-body);
}
.page-about .page-about-journey-card .accordion-indicator {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  border: 1px solid rgba(10, 31, 68, .3);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--bg-body);
  font-size: 16px;
  line-height: 1;
  transition: transform .25s ease;
}
.page-about .page-about-journey-toggle[aria-expanded="true"] .accordion-indicator {
  transform: rotate(45deg);
}
.page-about .page-about-journey-body {
  padding: 18px 18px 22px;
  color: #333c48;
  font-size: 15px;
  line-height: 1.85;
}
.page-about .page-about-journey-body p { margin: 0 0 10px; }
.page-about .page-about-journey-body ul {
  margin: 6px 0 0;
  padding-left: 18px;
}
.page-about .page-about-journey-body li { margin: 5px 0; }
.page-about .page-about-journey-ref {
  display: inline-block;
  margin-top: 12px;
  color: var(--bg-body);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-style: dashed;
  text-underline-offset: 4px;
}

/* ===== 核心能力 ===== */
.page-about .page-about-capability {
  background:
    radial-gradient(circle at 88% 10%, rgba(108, 75, 142, .18), transparent 36%),
    var(--bg-body);
}
.page-about .page-about-bento {
  display: grid;
  gap: 14px;
}
.page-about .page-about-bento .bento-tile {
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  position: relative;
}
.page-about .page-about-bento-update {
  background: var(--c-cream);
  color: var(--about-ink);
}
.page-about .page-about-bento-search {
  background: rgba(14, 42, 94, .78);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
}
.page-about .page-about-bento-content {
  background: linear-gradient(135deg, var(--c-moss), #4f6b54);
  color: #f4f8f4;
}
.page-about .page-about-bento-engine {
  background: linear-gradient(120deg, rgba(10, 31, 68, .9), rgba(108, 75, 142, .62));
  border: 1px solid var(--glass-border);
  color: var(--text-main);
}
.page-about .page-about-bento h3 {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: .05em;
  margin: 8px 0 10px;
}
.page-about .page-about-bento p {
  font-size: 14px;
  line-height: 1.8;
  margin: 0;
  opacity: .92;
}
.page-about .page-about-bento-metric {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid rgba(38, 48, 64, .3);
  font-size: 13px;
  letter-spacing: .04em;
  opacity: .85;
}
.page-about .page-about-bento-search .page-about-bento-metric,
.page-about .page-about-bento-engine .page-about-bento-metric {
  border-top-color: rgba(230, 232, 238, .22);
}
.page-about .page-about-bento-metric strong {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 22px;
  margin-right: 6px;
  vertical-align: -2px;
}

/* ===== 合作生态 ===== */
.page-about .page-about-eco {
  background:
    radial-gradient(circle at 88% 20%, rgba(242, 182, 50, .10), transparent 30%),
    var(--bg-deep);
}
.page-about .page-about-eco-grid {
  display: grid;
  gap: 16px;
}
.page-about .page-about-eco-card {
  background: rgba(14, 42, 94, .58);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
}
.page-about .page-about-eco-card .tag {
  display: inline-block;
  margin-bottom: 16px;
}
.page-about .page-about-eco-card h3 {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: .05em;
  color: var(--c-cream);
  margin-bottom: 10px;
}
.page-about .page-about-eco-card p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(230, 232, 238, .78);
  margin-bottom: 18px;
}
.page-about .page-about-eco-card a {
  color: var(--c-accent);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px dashed rgba(242, 182, 50, .5);
  padding-bottom: 2px;
}
.page-about .page-about-eco-note {
  margin-top: 24px;
}

/* ===== 团队与荣誉 ===== */
.page-about .page-about-honor {
  background: var(--bg-body);
}
.page-about .page-about-honor-grid {
  display: grid;
  gap: 30px;
  align-items: start;
}
.page-about .page-about-honor-copy .prose {
  color: rgba(230, 232, 238, .82);
}
.page-about .page-about-honors-list {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}
.page-about .page-about-honors-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border-light);
}
.page-about .page-about-honors-badge {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(242, 182, 50, .14);
  border: 1px solid rgba(242, 182, 50, .38);
  color: var(--c-accent);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  display: grid;
  place-items: center;
}
.page-about .page-about-honors-item h3 {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: .04em;
  color: var(--c-cream);
  margin-bottom: 4px;
}
.page-about .page-about-honors-item p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(230, 232, 238, .72);
  margin: 0;
}
.page-about .page-about-honor-media .media-frame {
  background: var(--bg-elevated);
  border: 1px solid var(--glass-border);
}
.page-about .page-about-honor-flag {
  height: 8px;
  border-radius: 99px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--c-banner-blue), var(--c-banner-red), var(--c-accent), var(--c-moss), var(--c-nebula));
  opacity: .8;
}

/* ===== 桌面端布局 ===== */
@media (min-width: 768px) {
  .page-about .page-about-hero {
    padding: 160px 0 64px;
  }
  .page-about .page-about-hero-stats {
    gap: 30px 56px;
  }
  .page-about .page-about-story-grid {
    grid-template-columns: minmax(0, .9fr) 1.1fr;
    gap: 48px;
  }
  .page-about .page-about-journey-item {
    grid-template-columns: 44px 1fr;
    gap: 20px;
  }
  .page-about .page-about-journey-line {
    left: 21px;
  }
  .page-about .page-about-journey-dot {
    width: 44px;
    height: 44px;
    font-size: 12px;
    border-radius: 14px;
  }
  .page-about .page-about-journey-year {
    width: 64px;
    font-size: 13px;
  }
  .page-about .page-about-journey-toggle {
    padding: 22px 24px;
  }
  .page-about .page-about-journey-body {
    padding: 20px 26px 24px;
  }
  .page-about .page-about-bento {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .page-about-bento .bento-tile--wide {
    grid-column: span 2;
  }
  .page-about .page-about-eco-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .page-about .page-about-honor-grid {
    grid-template-columns: 1.1fr .9fr;
    gap: 48px;
  }
}

@media (min-width: 1024px) {
  .page-about .page-about-bento {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .page-about-bento-update {
    grid-column: span 2;
  }
  .page-about .page-about-bento-engine {
    grid-column: span 2;
  }
}