/* ============================================
   Page: 品牌故事 /story/ — .page-about
   移动端优先，桌面端在 min-width:768px 扩展
   ============================================ */

.page-about {
  position: relative;
  overflow: hidden;
  --hero-glow: radial-gradient(circle, rgba(57, 255, 136, .12), transparent 65%);
  --philosophy-glow: radial-gradient(circle, rgba(255, 107, 53, .14), transparent 70%);
}

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

/* ---------- 面包屑 ---------- */
.page-about .page-breadcrumb {
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.25rem 1.5rem 0;
  font-size: 0.875rem;
  color: var(--color-muted);
}

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

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

/* ---------- 首屏 ---------- */
.page-about .page-hero {
  max-width: var(--container);
  margin: 0 auto;
  padding: 2.25rem 1.5rem 3rem;
  display: grid;
  gap: 2.25rem;
  position: relative;
}

.page-about .page-hero::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  left: 62%;
  top: -20px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 255, 136, .18), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.page-about .hero-copy {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.375rem;
}

.page-about .hero-copy h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6.5vw, 4.5rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0;
  transform: skew(-3deg);
  transform-origin: left bottom;
}

.page-about .hero-accent {
  display: block;
  margin-top: 0.25rem;
  color: var(--color-accent);
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .page-about .hero-accent {
    background: linear-gradient(95deg, var(--color-accent) 0%, var(--color-primary) 90%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

.page-about .hero-desc {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-muted);
  max-width: 36rem;
  margin: 0;
}

.page-about .hero-quicknav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin-top: 0.25rem;
}

.page-about .quicknav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 0.8125rem;
  text-decoration: none;
  transition: color .2s, border-color .2s, background .2s;
}

.page-about .quicknav-link:hover {
  color: var(--color-accent);
  border-color: rgba(57, 255, 136, .4);
  background: rgba(57, 255, 136, .08);
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.875rem;
  width: 100%;
  max-width: 32rem;
  margin: 0.25rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .hero-stat {
  background: linear-gradient(135deg, rgba(255, 255, 255, .1), rgba(255, 255, 255, .04));
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 1rem 1.125rem;
  backdrop-filter: blur(8px);
  transition: transform .3s var(--ease), border-color .3s;
}

.page-about .hero-stat:hover {
  transform: translateY(-4px);
  border-color: rgba(57, 255, 136, .4);
}

.page-about .hero-stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: 1.625rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.page-about .hero-stat-label {
  display: block;
  margin-top: 0.375rem;
  color: var(--color-muted);
  font-size: 0.8125rem;
  line-height: 1.4;
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 0.25rem;
}

.page-about .hero-visual {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-line);
  background: linear-gradient(145deg, #0F2A4D, #081428);
  min-height: 0;
}

.page-about .hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
}

.page-about .hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(11, 29, 58, 0) 40%, rgba(11, 29, 58, .55));
  pointer-events: none;
}

/* ---------- 品牌起源 ---------- */
.page-about .page-origin {
  max-width: var(--container);
  margin: 0 auto;
  padding: 3.5rem 1.5rem 4rem;
  position: relative;
}

.page-about .page-origin::before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  right: -70px;
  top: 60px;
  border-radius: 50%;
  background: var(--philosophy-glow);
  pointer-events: none;
}

.page-about .page-origin .section-head {
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
}

.page-about .origin-wrap {
  position: relative;
  display: grid;
  gap: 1.5rem;
  align-items: center;
}

.page-about .origin-year {
  font-family: var(--font-data);
  font-size: clamp(4rem, 14vw, 9rem);
  font-weight: 900;
  line-height: 0.9;
  color: var(--color-primary);
  transform: skew(-6deg);
  text-align: center;
  letter-spacing: -0.04em;
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .page-about .origin-year {
    background: linear-gradient(130deg, var(--color-accent) 5%, rgba(57, 255, 136, .05) 45%, var(--color-primary) 90%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

.page-about .origin-body {
  display: grid;
  gap: 1rem;
}

.page-about .origin-panel {
  padding: 1.75rem;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}

.page-about .origin-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 1.5rem;
  width: 3rem;
  height: 3px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.page-about .origin-panel h3 {
  font-size: 1.375rem;
  margin: 0 0 0.875rem;
}

.page-about .origin-panel p {
  color: var(--color-muted);
  line-height: 1.8;
  margin: 0 0 1rem;
}

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

.page-about .origin-panel strong {
  color: var(--color-text);
}

/* ---------- 成长里程碑 ---------- */
.page-about .page-milestones {
  max-width: var(--container);
  margin: 0 auto;
  padding: 4rem 1.5rem;
  position: relative;
}

.page-about .page-milestones .section-head {
  margin-bottom: 2.5rem;
}

.page-about .milestone-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-line);
  margin-bottom: 3.5rem;
  position: relative;
  background: #0F2A4D;
}

.page-about .milestone-image img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .milestone-track {
  position: relative;
  display: grid;
  gap: 3rem;
}

.page-about .milestone-item {
  position: relative;
  display: grid;
  gap: 0.625rem;
}

.page-about .milestone-year {
  font-family: var(--font-data);
  font-size: clamp(2.5rem, 8vw, 4.25rem);
  font-weight: 900;
  line-height: 1;
  color: var(--color-accent);
  transform: skew(-5deg);
  text-align: left;
  letter-spacing: -0.03em;
  transition: filter .3s, transform .35s var(--ease);
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .page-about .milestone-year {
    background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

.page-about .milestone-item:hover .milestone-year {
  filter: drop-shadow(0 0 14px rgba(57, 255, 136, .35));
  transform: skew(-5deg) translateX(6px);
}

.page-about .milestone-panel {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  backdrop-filter: blur(8px);
  transition: transform .3s var(--ease), border-color .3s, box-shadow .3s;
}

.page-about .milestone-item:hover .milestone-panel {
  border-color: rgba(57, 255, 136, .35);
  transform: translateX(4px);
  box-shadow: var(--shadow-1);
}

.page-about .milestone-panel h3 {
  font-size: 1.25rem;
  margin: 0 0 0.625rem;
}

.page-about .milestone-panel p {
  color: var(--color-muted);
  line-height: 1.7;
  font-size: 0.9375rem;
  margin: 0;
}

.page-about .milestone-item-current .milestone-year {
  background: none;
  color: var(--color-accent);
  font-family: var(--font-body);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: 0;
  transform: skew(-5deg);
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
}

.page-about .milestone-item-current .milestone-year::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(57, 255, 136, .2), 0 0 14px rgba(57, 255, 136, .8);
}

/* ---------- 服务哲学 ---------- */
.page-about .page-philosophy {
  max-width: var(--container);
  margin: 0 auto;
  padding: 4rem 1.5rem;
  background: linear-gradient(180deg, transparent, rgba(15, 42, 77, .4), transparent);
  border-block: 1px solid rgba(255, 255, 255, .06);
}

.page-about .page-philosophy .section-head {
  margin-bottom: 2.5rem;
}

.page-about .philosophy-grid {
  display: grid;
  gap: 1.5rem;
}

.page-about .philosophy-card {
  padding: 1.75rem;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  position: relative;
  overflow: hidden;
  transition: transform .35s var(--ease), border-color .35s;
}

.page-about .philosophy-card::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 53, .18), transparent 70%);
  pointer-events: none;
}

.page-about .philosophy-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 107, 53, .45);
}

.page-about .philosophy-num {
  font-family: var(--font-data);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.page-about .philosophy-card h3 {
  font-size: 1.375rem;
  margin: 0 0 0.625rem;
}

.page-about .philosophy-card p {
  color: var(--color-muted);
  line-height: 1.75;
  font-size: 0.9375rem;
  margin: 0;
}

/* ---------- 团队与实力 ---------- */
.page-about .page-team {
  max-width: var(--container);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.page-about .team-grid {
  display: grid;
  gap: 2rem;
}

.page-about .team-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-line);
  position: relative;
}

.page-about .team-image img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .team-content {
  display: grid;
  gap: 1rem;
}

.page-about .team-lead {
  color: var(--color-muted);
  line-height: 1.8;
  font-size: 1rem;
  margin: 0 0 0.75rem;
}

.page-about .team-list {
  display: grid;
  gap: 0.875rem;
}

.page-about .team-skill {
  padding: 1.25rem 1.375rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-line);
  transition: background .3s, border-color .3s;
}

.page-about .team-skill:hover {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(57, 255, 136, .3);
}

.page-about .team-skill h3 {
  font-size: 1.125rem;
  margin: 0 0 0.5rem;
  color: var(--color-primary);
}

.page-about .team-skill p {
  color: var(--color-muted);
  line-height: 1.65;
  font-size: 0.9375rem;
  margin: 0;
}

/* ---------- 认证与荣誉 ---------- */
.page-about .page-honors {
  max-width: var(--container);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.page-about .page-honors .section-head {
  margin-bottom: 2.5rem;
}

.page-about .honor-grid {
  display: grid;
  gap: 1.25rem;
}

.page-about .honor-card {
  padding: 0;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  overflow: hidden;
  backdrop-filter: blur(8px);
}

.page-about .honor-summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.page-about .honor-badge {
  flex: 0 0 auto;
  width: 2.75rem;
  height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-bg-deep);
  font-family: var(--font-data);
  font-size: 0.8125rem;
  font-weight: 800;
  text-align: center;
  line-height: 1;
}

.page-about .honor-title {
  flex: 1;
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.4;
}

.page-about .honor-more {
  flex: 0 0 auto;
  color: var(--color-accent);
  font-size: 1.375rem;
  font-weight: 300;
  line-height: 1;
  transition: transform .25s;
}

.page-about .honor-card[open] .honor-more {
  transform: rotate(45deg);
}

.page-about .honor-card p {
  margin: 0;
  padding: 0 1.5rem 1.5rem;
  color: var(--color-muted);
  line-height: 1.75;
  font-size: 0.9375rem;
}

/* ---------- 合作生态 ---------- */
.page-about .page-partners {
  max-width: var(--container);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.page-about .page-partners .section-head {
  margin-bottom: 2rem;
}

.page-about .partner-links {
  display: grid;
  gap: 1.25rem;
}

.page-about .partner-item {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-line);
}

.page-about .partner-item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
  color: var(--color-primary);
}

.page-about .partner-item p {
  color: var(--color-muted);
  line-height: 1.7;
  margin: 0;
}

/* ---------- CTA ---------- */
.page-about .page-cta {
  max-width: var(--container);
  margin: 0 auto;
  padding: 1rem 1.5rem 4.5rem;
}

.page-about .cta-panel {
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(255, 107, 53, .15), rgba(57, 255, 136, .1)), var(--color-surface);
  border: 1px solid rgba(255, 255, 255, .15);
  padding: 2.75rem 1.75rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}

.page-about .cta-panel::before {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 255, 136, .2), transparent 70%);
  top: -60px;
  right: -40px;
  pointer-events: none;
}

.page-about .cta-panel h2 {
  font-size: clamp(1.75rem, 4vw, 2.625rem);
  letter-spacing: -0.02em;
  margin: 0;
}

.page-about .cta-panel p {
  color: var(--color-muted);
  line-height: 1.75;
  max-width: 34rem;
  margin: 0;
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.875rem;
  margin-top: 0.5rem;
}

/* ---------- 桌面端扩展 ---------- */
@media (min-width: 768px) {
  .page-about .page-breadcrumb {
    padding: 1.5rem 2rem 0;
  }

  .page-about .page-hero {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
    padding: 3rem 2rem 5rem;
    align-items: center;
  }

  .page-about .hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .page-origin {
    padding: 5rem 2rem;
  }

  .page-about .origin-wrap {
    grid-template-columns: 1fr 1.1fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .origin-year {
    position: sticky;
    top: 4rem;
    font-size: clamp(6rem, 12vw, 10rem);
  }

  .page-about .page-milestones {
    padding: 5rem 2rem;
  }

  .page-about .milestone-track {
    gap: 3.5rem;
  }

  .page-about .milestone-track::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    transform: translateX(-50%);
    background: linear-gradient(180deg, transparent, var(--color-primary) 15%, var(--color-accent) 80%, transparent);
    opacity: 0.4;
    z-index: 0;
  }

  .page-about .milestone-item {
    grid-template-columns: minmax(0, 1fr) 4rem minmax(0, 1fr);
    gap: 0;
    align-items: center;
    z-index: 1;
  }

  .page-about .milestone-item::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-accent);
    box-shadow: 0 0 0 4px rgba(57, 255, 136, .14), 0 0 16px rgba(57, 255, 136, .55);
    transition: box-shadow .3s;
    z-index: 2;
  }

  .page-about .milestone-item:hover::after {
    box-shadow: 0 0 0 8px rgba(57, 255, 136, .22), 0 0 28px rgba(57, 255, 136, .9);
  }

  .page-about .milestone-year {
    grid-column: 1;
    justify-self: end;
    text-align: right;
    padding-right: 2.5rem;
    font-size: clamp(2.75rem, 5vw, 4.75rem);
  }

  .page-about .milestone-panel {
    grid-column: 3;
    justify-self: start;
    width: 100%;
  }

  .page-about .milestone-item:nth-child(even) .milestone-year {
    grid-column: 3;
    justify-self: start;
    text-align: left;
    padding-right: 0;
    padding-left: 2.5rem;
  }

  .page-about .milestone-item:nth-child(even) .milestone-panel {
    grid-column: 1;
    justify-self: end;
  }

  .page-about .milestone-item-current .milestone-year {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    transform: skew(-5deg);
  }

  .page-about .page-philosophy {
    padding: 5rem 2rem;
  }

  .page-about .philosophy-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }

  .page-about .page-team {
    padding: 5rem 2rem;
  }

  .page-about .team-grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .team-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .page-honors {
    padding: 5rem 2rem;
  }

  .page-about .honor-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .page-about .page-partners {
    padding: 4rem 2rem 5rem;
  }

  .page-about .partner-links {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .page-cta {
    padding: 1rem 2rem 5rem;
  }

  .page-about .cta-panel {
    padding: 3.5rem 3rem;
  }
}