/* ===== 品牌故事页面专属样式 page-about ===== */
.page-about {
  --about-font-title: 'Montserrat','SF Pro Display','Helvetica Neue',Arial,sans-serif;
  --about-font-body: 'Noto Sans SC','PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --about-radius-card: 24px;
  --about-radius-sm: 12px;
  --about-transition: 0.4s cubic-bezier(0.22,1,0.36,1);
  --about-max-text: 680px;
  --about-section-gap: 3rem;
  display: block;
  width: 100%;
  overflow-x: hidden;
  background: #F5F5F7;
  color: #333333;
  font-family: var(--about-font-body);
  line-height: 1.6;
}

/* ----- 面包屑 ----- */
.page-about .breadcrumbs {
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 1rem 1.5rem 0;
  font-size: 0.85rem;
  color: #8E8E93;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}
.page-about .breadcrumbs a {
  color: #1A73E8;
  text-decoration: none;
  transition: color 0.2s;
}
.page-about .breadcrumbs a:hover {
  color: #FF6B35;
}
.page-about .breadcrumbs-sep {
  color: #8E8E93;
  font-size: 1.1em;
}
.page-about .breadcrumbs [aria-current="page"] {
  color: #333333;
  font-weight: 500;
}

/* ----- 章节导航锚点 ----- */
.page-about .section-nav {
  max-width: var(--max-width, 1280px);
  margin: 0.8rem auto 0;
  padding: 0 1.5rem;
  display: flex;
  flex-wrap: nowrap;
  gap: 0.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.page-about .section-nav::-webkit-scrollbar {
  display: none;
}
.page-about .section-nav-link {
  flex: 0 0 auto;
  padding: 0.45rem 1.2rem;
  border-radius: 48px;
  background: #FFFFFF;
  color: #1A73E8;
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: all var(--about-transition);
  border: 1px solid transparent;
}
.page-about .section-nav-link:hover {
  background: #1A73E8;
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(26,115,232,0.25);
  transform: translateY(-2px);
}
.page-about .section-nav-link:focus-visible {
  outline: 2px solid #FF6B35;
  outline-offset: 2px;
}

/* ----- 品牌理念（全屏大图叠加） ----- */
.page-about .philosophy-section {
  position: relative;
  width: 100%;
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 0;
}
.page-about .philosophy-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-about .philosophy-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  font-family: 'object-fit: cover; object-position: center 30%;';
}
.page-about .philosophy-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(145deg, rgba(28,28,30,0.65) 0%, rgba(28,28,30,0.30) 70%, rgba(255,107,53,0.20) 100%);
}
.page-about .philosophy-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width, 1280px);
  width: 100%;
  padding: 2rem 1.5rem;
  text-align: center;
  color: #FFFFFF;
}
.page-about .philosophy-title {
  font-family: var(--about-font-title);
  font-size: clamp(2.8rem, 10vw, 5.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 0.6rem;
  text-shadow: 0 2px 20px rgba(0,0,0,0.25);
}
.page-about .philosophy-sub {
  font-size: clamp(1.1rem, 3vw, 1.8rem);
  font-weight: 300;
  color: #FFD700;
  margin: 0 0 1.2rem;
  letter-spacing: 0.03em;
  text-shadow: 0 1px 12px rgba(0,0,0,0.20);
}
.page-about .philosophy-desc {
  max-width: var(--about-max-text);
  margin: 0 auto;
  font-size: clamp(0.95rem, 1.6vw, 1.15rem);
  font-weight: 300;
  line-height: 1.7;
  color: rgba(255,255,255,0.92);
  text-shadow: 0 1px 8px rgba(0,0,0,0.15);
  padding: 0 0.5rem;
}
.page-about .philosophy-scroll-hint {
  margin-top: 3rem;
  animation: about-bounce 2.4s ease-in-out infinite;
}
.page-about .scroll-arrow {
  display: inline-block;
  width: 28px;
  height: 28px;
  border-right: 2.5px solid #FFD700;
  border-bottom: 2.5px solid #FFD700;
  transform: rotate(45deg);
  opacity: 0.8;
}
@keyframes about-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(10px); }
}

/* ----- SVG波浪分隔线 ----- */
.page-about .wave-divider {
  display: block;
  width: 100%;
  height: 80px;
  line-height: 0;
  overflow: hidden;
  background: transparent;
  position: relative;
  z-index: 1;
}
.page-about .wave-divider svg {
  display: block;
  width: 100%;
  height: 100%;
}
.page-about .wave-orange {
  color: #FF6B35;
  background: #F5F5F7;
}
.page-about .wave-orange svg path {
  fill: #FF6B35;
}
.page-about .wave-blue {
  color: #1A73E8;
  background: #F5F5F7;
}
.page-about .wave-blue svg path {
  fill: #1A73E8;
}
.page-about .wave-gold {
  color: #FFD700;
  background: #F5F5F7;
}
.page-about .wave-gold svg path {
  fill: #FFD700;
}
.page-about .wave-dark {
  color: #1C1C1E;
  background: #F5F5F7;
}
.page-about .wave-dark svg path {
  fill: #1C1C1E;
}

/* ----- 通用章节容器 ----- */
.page-about .page-container {
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.page-about .section-title {
  font-family: var(--about-font-title);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  margin: 0 0 0.5rem;
  color: #333333;
  letter-spacing: -0.01em;
  line-height: 1.15;
}
.page-about .section-title--light {
  color: #FFFFFF;
}
.page-about .section-desc {
  font-size: 1rem;
  color: #8E8E93;
  margin: 0 0 2.5rem;
  max-width: var(--about-max-text);
}
.page-about .section-desc--light {
  color: rgba(255,255,255,0.75);
}

/* ----- 愿景与使命 ----- */
.page-about .vision-section {
  padding: var(--about-section-gap) 0;
  background: #F5F5F7;
}
.page-about .vision-inner {
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}
.page-about .vision-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.8rem;
  position: relative;
}
.page-about .vision-card {
  background: #FFFFFF;
  border-radius: var(--about-radius-card);
  padding: 2rem 1.8rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
  transition: all var(--about-transition);
  position: relative;
}
.page-about .vision-card:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.10);
  transform: translateY(-4px);
}
.page-about .vision-card-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: #FF6B35;
  line-height: 1;
}
.page-about .vision-card--right .vision-card-icon {
  color: #1A73E8;
}
.page-about .vision-card-title {
  font-family: var(--about-font-title);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: #333333;
}
.page-about .vision-card p {
  font-size: 0.95rem;
  color: #555555;
  line-height: 1.7;
  margin: 0;
}
.page-about .vision-image-wrap {
  border-radius: var(--about-radius-card);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
.page-about .vision-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ----- 核心价值（时间轴） ----- */
.page-about .values-section {
  padding: var(--about-section-gap) 0;
  background: linear-gradient(160deg, #1C1C1E 0%, #2A2A2E 60%, #1A3A4A 100%);
  position: relative;
}
.page-about .values-inner {
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}
.page-about .timeline {
  position: relative;
  margin: 2rem 0 0;
  padding-left: 3rem;
}
.page-about .timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, #FF6B35, #FFD700, #1A73E8);
  border-radius: 4px;
}
.page-about .timeline-item {
  position: relative;
  margin-bottom: 2.2rem;
}
.page-about .timeline-item:last-child {
  margin-bottom: 0;
}
.page-about .timeline-node {
  position: absolute;
  left: -3rem;
  top: 1rem;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  background: #FFFFFF;
  color: #1C1C1E;
  font-family: var(--about-font-title);
  font-size: 0.8rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 4px rgba(255,215,0,0.3);
  z-index: 2;
  line-height: 1;
}
.page-about .timeline-card {
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-radius: var(--about-radius-card);
  border: 1px solid rgba(255,255,255,0.10);
  overflow: hidden;
  transition: all var(--about-transition);
}
.page-about .timeline-card:hover {
  background: rgba(255,255,255,0.10);
  border-color: rgba(255,215,0,0.25);
}

/* 核心价值卡片详情展开 */
.page-about .value-details {
  display: block;
  width: 100%;
}
.page-about .value-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  padding: 1.5rem 1.8rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
  position: relative;
}
.page-about .value-summary::-webkit-details-marker {
  display: none;
}
.page-about .value-summary:focus-visible {
  outline: 2px solid #FFD700;
  outline-offset: -2px;
  border-radius: var(--about-radius-card);
}
.page-about .value-name {
  font-family: var(--about-font-title);
  font-size: 1.3rem;
  font-weight: 700;
  color: #FFD700;
  letter-spacing: 0.01em;
}
.page-about .value-brief {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  flex: 1;
  min-width: 120px;
}
.page-about .value-toggle-icon {
  font-size: 1.4rem;
  font-weight: 300;
  color: #FFD700;
  transition: transform 0.3s ease;
  line-height: 1;
  margin-left: auto;
}
.page-about .value-details[open] .value-toggle-icon {
  transform: rotate(45deg);
}
.page-about .value-detail-content {
  padding: 0 1.8rem 1.5rem;
  color: rgba(255,255,255,0.80);
  font-size: 0.95rem;
  line-height: 1.75;
  border-top: 1px solid rgba(255,215,0,0.15);
  padding-top: 1.2rem;
  margin-top: 0;
}
.page-about .value-detail-content p {
  margin: 0;
}

/* ----- 团队精神 ----- */
.page-about .team-section {
  padding: var(--about-section-gap) 0;
  background: #F5F5F7;
}
.page-about .team-inner {
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}
.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
.page-about .team-text {
  background: #FFFFFF;
  border-radius: var(--about-radius-card);
  padding: 2rem 1.8rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.page-about .team-intro {
  font-size: 1.1rem;
  font-weight: 500;
  color: #333333;
  margin: 0 0 1.5rem;
  line-height: 1.6;
}
.page-about .team-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.page-about .team-list li {
  padding-left: 1.8rem;
  position: relative;
  font-size: 0.95rem;
  color: #555555;
  line-height: 1.6;
}
.page-about .team-list li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: #FF6B35;
  font-size: 1.1rem;
}
.page-about .team-list strong {
  color: #1A73E8;
  font-weight: 600;
}
.page-about .team-closing {
  font-size: 0.95rem;
  color: #666666;
  margin: 0;
  font-style: italic;
  border-top: 1px solid #EDEDF0;
  padding-top: 1.2rem;
}
.page-about .team-image-wrap {
  border-radius: var(--about-radius-card);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
.page-about .team-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ----- 联系我们 ----- */
.page-about .contact-section {
  padding: var(--about-section-gap) 0;
  background: linear-gradient(135deg, #1C1C1E 0%, #2D2D30 100%);
  color: #FFFFFF;
}
.page-about .contact-inner {
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}
.page-about .contact-intro {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.75);
  margin: 0 0 2.5rem;
  max-width: var(--about-max-text);
}
.page-about .contact-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
  margin-bottom: 2.5rem;
}
.page-about .contact-card {
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-radius: var(--about-radius-card);
  padding: 1.8rem 1.5rem;
  border: 1px solid rgba(255,255,255,0.08);
  transition: all var(--about-transition);
  text-align: center;
}
.page-about .contact-card:hover {
  background: rgba(255,255,255,0.10);
  border-color: rgba(255,215,0,0.20);
  transform: translateY(-3px);
}
.page-about .contact-card-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.5rem;
  color: #FFD700;
}
.page-about .contact-card-label {
  font-family: var(--about-font-title);
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.4rem;
  color: #FFFFFF;
}
.page-about .contact-card-value {
  display: block;
  font-size: 0.95rem;
  color: #FFD700;
  text-decoration: none;
  word-break: break-all;
  transition: color 0.2s;
}
.page-about .contact-card-value:hover {
  color: #FF6B35;
}
.page-about .contact-note {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.50);
  margin: 0.5rem 0 0;
}
.page-about .contact-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem 1.2rem;
  justify-content: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.95rem;
  color: rgba(255,255,255,0.60);
}
.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.8rem;
  border-radius: 48px;
  font-family: var(--about-font-body);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--about-transition);
  border: 1.5px solid transparent;
  cursor: default;
  min-height: 48px;
}
.page-about .btn-secondary {
  background: transparent;
  border-color: #FF6B35;
  color: #FF6B35;
}
.page-about .btn-secondary:hover {
  background: #FF6B35;
  color: #FFFFFF;
  box-shadow: 0 6px 24px rgba(255,107,53,0.30);
  transform: translateY(-2px);
}

/* ===== 响应式 桌面端 ===== */
@media (min-width: 768px) {
  .page-about {
    --about-section-gap: 4.5rem;
  }
  .page-about .breadcrumbs {
    padding-left: 2rem;
    padding-right: 2rem;
    font-size: 0.9rem;
  }
  .page-about .section-nav {
    padding: 0 2rem;
    justify-content: center;
  }
  .page-about .section-nav-link {
    font-size: 0.9rem;
    padding: 0.55rem 1.6rem;
  }
  .page-about .philosophy-section {
    min-height: 88vh;
  }
  .page-about .philosophy-content {
    padding: 3rem 2rem;
  }
  .page-about .philosophy-desc {
    font-size: 1.15rem;
  }
  .page-about .wave-divider {
    height: 100px;
  }
  .page-about .vision-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .page-about .vision-image-wrap {
    grid-column: 1 / -1;
    max-width: 600px;
    justify-self: center;
  }
  .page-about .vision-card {
    padding: 2.5rem 2rem;
  }
  .page-about .timeline {
    padding-left: 4rem;
  }
  .page-about .timeline::before {
    left: 16px;
  }
  .page-about .timeline-node {
    left: -4rem;
    width: 3rem;
    height: 3rem;
    font-size: 0.9rem;
  }
  .page-about .value-summary {
    padding: 1.8rem 2.2rem;
  }
  .page-about .value-detail-content {
    padding-left: 2.2rem;
    padding-right: 2.2rem;
    padding-bottom: 1.8rem;
  }
  .page-about .team-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .page-about .team-text {
    padding: 2.5rem 2rem;
  }
  .page-about .contact-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
  .page-about .contact-card {
    padding: 2rem 1.5rem;
  }
  .page-about .contact-links {
    justify-content: flex-start;
  }
}

@media (min-width: 1024px) {
  .page-about {
    --about-section-gap: 5.5rem;
  }
  .page-about .breadcrumbs {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
  .page-about .section-nav {
    padding: 0 2.5rem;
    gap: 0.8rem;
  }
  .page-about .philosophy-section {
    min-height: 85vh;
  }
  .page-about .philosophy-title {
    font-size: 5.5rem;
  }
  .page-about .vision-grid {
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: auto;
  }
  .page-about .vision-card--left {
    grid-column: 1 / 2;
    grid-row: 1 / 2;
  }
  .page-about .vision-card--right {
    grid-column: 2 / 3;
    grid-row: 1 / 2;
  }
  .page-about .vision-image-wrap {
    grid-column: 3 / 4;
    grid-row: 1 / 2;
    max-width: none;
    justify-self: stretch;
  }
  .page-about .timeline {
    padding-left: 5rem;
    max-width: 780px;
    margin-left: auto;
    margin-right: auto;
  }
  .page-about .timeline::before {
    left: 20px;
  }
  .page-about .timeline-node {
    left: -5rem;
    width: 3.4rem;
    height: 3.4rem;
    font-size: 1rem;
  }
  .page-about .team-grid {
    gap: 3rem;
  }
  .page-about .team-text {
    padding: 3rem 2.5rem;
  }
  .page-about .contact-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
  .page-about .btn {
    font-size: 0.95rem;
    padding: 0.7rem 2rem;
  }
}