/* ===== 页面专属样式：page-about ===== */
.page-about {
  --accent-glow-soft: 0 0 20px rgba(255, 59, 48, 0.25);
  --timeline-line-color: rgba(255, 215, 0, 0.2);
  --card-bg-tint: rgba(255, 255, 255, 0.04);
  --stat-bg: rgba(10, 31, 61, 0.7);
  --border-glow: 1px solid rgba(255, 59, 48, 0.3);
  --quote-border-color: var(--gold);
}

/* ===== 面包屑 ===== */
.page-about .breadcrumb {
  position: relative;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.375rem 0.5rem;
  padding: 0.75rem 1rem 0;
  font-size: 0.8125rem;
  font-family: var(--font-accent, monospace);
  color: rgba(255, 255, 255, 0.6);
  max-width: 1200px;
  margin: 0 auto;
}
.page-about .breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.25s;
}
.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--gold, #ffd700);
}
.page-about .breadcrumb .separator {
  color: rgba(255, 255, 255, 0.3);
  user-select: none;
}
.page-about .breadcrumb [aria-current="page"] {
  color: var(--accent, #ff3b30);
  font-weight: 600;
}

/* ===== 首屏故事封面 ===== */
.page-about .story-cover {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 2rem 1rem 3rem;
  margin-top: 0;
}
.page-about .story-cover__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-about .story-cover__bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}
.page-about .story-cover__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10, 31, 61, 0.85) 0%, rgba(10, 31, 61, 0.4) 60%, rgba(10, 31, 61, 0.7) 100%);
}
.page-about .story-cover__content {
  position: relative;
  z-index: 2;
  max-width: 820px;
  width: 100%;
  margin: 0 auto;
}
.page-about .story-cover .section-number {
  font-size: 1.125rem;
  font-family: var(--font-accent, monospace);
  color: var(--gold, #ffd700);
  display: inline-block;
  margin-bottom: 0.5rem;
  letter-spacing: 2px;
}
.page-about .story-cover__title {
  font-family: var(--font-heading, Impact, 'Futura Bold', sans-serif);
  font-size: clamp(2.6rem, 8vw, 5rem);
  font-weight: 900;
  color: var(--text-light, #ffffff);
  line-height: 1.05;
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, #ffffff 40%, var(--gold, #ffd700) 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeSlideUp 0.8s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}
.page-about .story-cover__lead {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 300;
  color: var(--gold, #ffd700);
  margin: 0 0 0.75rem;
  font-style: italic;
  letter-spacing: 0.02em;
  border-left: 3px solid var(--accent, #ff3b30);
  padding-left: 1rem;
  animation: fadeSlideUp 0.8s 0.15s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}
.page-about .story-cover__intro {
  font-size: clamp(0.95rem, 1.4vw, 1.125rem);
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 0 1.5rem;
  animation: fadeSlideUp 0.8s 0.3s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}
.page-about .story-cover__index {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  animation: fadeSlideUp 0.8s 0.45s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}
.page-about .story-cover__index .tag {
  background: rgba(255, 215, 0, 0.15);
  color: var(--gold, #ffd700);
  border: 1px solid rgba(255, 215, 0, 0.25);
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-family: var(--font-accent, monospace);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-radius: var(--radius, 4px);
}

@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== 品牌起源 ===== */
.page-about .origin {
  padding: 3rem 1rem;
}
.page-about .origin__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}
.page-about .origin__text .section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  margin: 0.25rem 0 0.25rem;
  color: var(--text-light, #ffffff);
}
.page-about .origin__text .section-sub {
  color: var(--gold, #ffd700);
  font-family: var(--font-accent, monospace);
  font-size: 0.9rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin: 0 0 1.25rem;
}
.page-about .origin__text p {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.75;
  margin: 0 0 1rem;
  max-width: 680px;
}
.page-about .origin__visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.page-about .origin__stat-card {
  background: var(--stat-bg);
  border: var(--border-glow);
  border-radius: var(--radius, 4px);
  padding: 1.25rem 1rem;
  text-align: center;
  backdrop-filter: blur(6px);
  transition: box-shadow 0.35s, transform 0.35s;
}
.page-about .origin__stat-card:hover {
  box-shadow: var(--accent-glow-soft);
  transform: translateY(-2px);
}
.page-about .origin__stat-number {
  display: block;
  font-family: var(--font-heading, Impact, 'Futura Bold', sans-serif);
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--accent, #ff3b30);
  line-height: 1.2;
  letter-spacing: 1px;
}
.page-about .origin__stat-label {
  display: block;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.6);
  font-family: var(--font-accent, monospace);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 0.25rem;
}

/* ===== 灯火主场理念 ===== */
.page-about .philosophy {
  padding: 3rem 1rem;
  background: rgba(0, 0, 0, 0.25);
}
.page-about .philosophy__header {
  margin-bottom: 2rem;
}
.page-about .philosophy__header .section-number {
  font-size: 0.95rem;
  color: var(--gold, #ffd700);
  font-family: var(--font-accent, monospace);
  display: inline-block;
  margin-bottom: 0.25rem;
}
.page-about .philosophy__header .section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  margin: 0.25rem 0 0.25rem;
  color: var(--text-light, #ffffff);
}
.page-about .philosophy__header .section-sub {
  color: var(--accent, #ff3b30);
  font-family: var(--font-accent, monospace);
  font-size: 0.85rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin: 0;
}
.page-about .philosophy__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}
.page-about .philosophy__text p {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.75;
  margin: 0 0 1rem;
}
.page-about .philosophy__image {
  margin: 0;
  border-radius: var(--radius, 4px);
  overflow: hidden;
  box-shadow: var(--shadow-card, 0 2px 12px rgba(0,0,0,0.35));
  border: 1px solid rgba(255, 215, 0, 0.15);
}
.page-about .philosophy__image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
.page-about .philosophy__image figcaption {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  font-family: var(--font-accent, monospace);
  background: rgba(0,0,0,0.4);
  text-align: center;
  letter-spacing: 0.5px;
}

/* ===== 发展历程时间线 ===== */
.page-about .timeline {
  padding: 3rem 1rem;
}
.page-about .timeline__header {
  margin-bottom: 2.5rem;
}
.page-about .timeline__header .section-number {
  font-size: 0.95rem;
  color: var(--gold, #ffd700);
  font-family: var(--font-accent, monospace);
  display: inline-block;
  margin-bottom: 0.25rem;
}
.page-about .timeline__header .section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  margin: 0.25rem 0 0.25rem;
  color: var(--text-light, #ffffff);
}
.page-about .timeline__header .section-sub {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.95rem;
  margin: 0;
}
.page-about .timeline__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  position: relative;
}
.page-about .timeline__grid::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--timeline-line-color);
}
.page-about .timeline__node {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 1rem;
  align-items: start;
  position: relative;
  padding-left: 0;
}
.page-about .timeline__node-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--gold, #ffd700);
  background: var(--bg-dark, #0a1f3d);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  z-index: 2;
  box-shadow: 0 0 0 4px rgba(10,31,61,0.9), 0 0 12px rgba(255,215,0,0.2);
  transition: box-shadow 0.35s, transform 0.35s;
}
.page-about .timeline__node:hover .timeline__node-icon {
  box-shadow: 0 0 0 4px rgba(10,31,61,0.9), 0 0 20px rgba(255,215,0,0.35);
  transform: scale(1.05);
}
.page-about .timeline__node-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-about .timeline__node-content {
  background: var(--card-bg-tint);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius, 4px);
  padding: 1rem 1.25rem;
  transition: background 0.3s, box-shadow 0.3s;
}
.page-about .timeline__node:hover .timeline__node-content {
  background: rgba(255, 255, 255, 0.07);
  box-shadow: var(--accent-glow-soft);
}
.page-about .timeline__node-title {
  font-family: var(--font-heading, Impact, 'Futura Bold', sans-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-light, #ffffff);
  margin: 0 0 0.25rem;
  letter-spacing: 0.01em;
}
.page-about .timeline__node-desc {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
  margin: 0;
}

/* ===== 团队愿景 ===== */
.page-about .vision {
  padding: 3rem 1rem;
  background: linear-gradient(180deg, rgba(0,0,0,0.2) 0%, rgba(10,31,61,0.6) 100%);
}
.page-about .vision__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.page-about .vision__text .section-number {
  font-size: 0.95rem;
  color: var(--gold, #ffd700);
  font-family: var(--font-accent, monospace);
  display: inline-block;
  margin-bottom: 0.25rem;
}
.page-about .vision__text .section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  margin: 0.25rem 0 0.25rem;
  color: var(--text-light, #ffffff);
}
.page-about .vision__text .section-sub {
  color: var(--accent, #ff3b30);
  font-family: var(--font-accent, monospace);
  font-size: 0.85rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin: 0 0 1.25rem;
}
.page-about .vision__text p {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.75;
  margin: 0 0 1rem;
  max-width: 680px;
}
.page-about .vision__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.page-about .vision__actions .btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.5rem;
  font-family: var(--font-body, system-ui, sans-serif);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius, 4px);
  transition: background 0.25s, box-shadow 0.25s, transform 0.2s;
  cursor: default;
}
.page-about .vision__actions .btn-primary {
  background: var(--accent, #ff3b30);
  color: #fff;
  border: none;
  box-shadow: 0 2px 10px rgba(255, 59, 48, 0.3);
}
.page-about .vision__actions .btn-primary:hover {
  background: #e0352b;
  box-shadow: 0 4px 18px rgba(255, 59, 48, 0.45);
  transform: translateY(-1px);
}
.page-about .vision__actions .btn-secondary {
  background: transparent;
  color: var(--text-light, #ffffff);
  border: 1px solid rgba(255, 255, 255, 0.2);
}
.page-about .vision__actions .btn-secondary:hover {
  border-color: var(--gold, #ffd700);
  color: var(--gold, #ffd700);
  background: rgba(255, 215, 0, 0.06);
}
.page-about .vision__quote {
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-about .vision__quote blockquote {
  margin: 0;
  padding: 1.5rem 1.5rem 1.5rem 2rem;
  border-left: 4px solid var(--quote-border-color);
  background: rgba(255, 215, 0, 0.04);
  border-radius: 0 var(--radius, 4px) var(--radius, 4px) 0;
  max-width: 500px;
}
.page-about .vision__quote blockquote p {
  font-family: var(--font-heading, Impact, 'Futura Bold', sans-serif);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 500;
  color: var(--gold, #ffd700);
  line-height: 1.5;
  margin: 0;
  font-style: italic;
}

/* ===== 内联联系卡片 ===== */
.page-about .contact-card {
  padding: 2.5rem 1rem 3rem;
}
.page-about .contact-card__inner {
  background: var(--card-bg-tint);
  border: 1px solid rgba(255, 215, 0, 0.12);
  border-radius: var(--radius, 4px);
  padding: 1.75rem 1.5rem;
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}
.page-about .contact-card__title {
  font-family: var(--font-heading, Impact, 'Futura Bold', sans-serif);
  font-size: 1.25rem;
  color: var(--text-light, #ffffff);
  margin: 0 0 0.5rem;
}
.page-about .contact-card__text {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  margin: 0 0 1rem;
}
.page-about .contact-card__info {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.25rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 1.25rem;
}
.page-about .contact-card__info a {
  color: var(--gold, #ffd700);
  text-decoration: none;
}
.page-about .contact-card__info a:hover {
  text-decoration: underline;
}
.page-about .contact-card .btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.5rem;
  font-family: var(--font-body, system-ui, sans-serif);
  font-weight: 600;
  font-size: 0.85rem;
  border-radius: var(--radius, 4px);
  background: var(--accent, #ff3b30);
  color: #fff;
  border: none;
  box-shadow: 0 2px 10px rgba(255, 59, 48, 0.3);
  transition: background 0.25s, box-shadow 0.25s, transform 0.2s;
  cursor: default;
}
.page-about .contact-card .btn:hover {
  background: #e0352b;
  box-shadow: 0 4px 18px rgba(255, 59, 48, 0.45);
  transform: translateY(-1px);
}

/* ===== 响应式：桌面端 ===== */
@media (min-width: 768px) {
  .page-about .breadcrumb {
    padding: 1rem 2rem 0;
  }

  .page-about .story-cover {
    min-height: 85vh;
    padding: 3rem 2rem 4rem;
  }

  .page-about .origin {
    padding: 4rem 2rem;
  }
  .page-about .origin__inner {
    grid-template-columns: 1.4fr 1fr;
    gap: 3rem;
  }
  .page-about .origin__visual {
    grid-template-columns: 1fr;
    gap: 1rem;
    align-self: center;
  }
  .page-about .origin__stat-card {
    padding: 1.5rem 1.25rem;
  }
  .page-about .origin__stat-number {
    font-size: 2.25rem;
  }

  .page-about .philosophy {
    padding: 4rem 2rem;
  }
  .page-about .philosophy__grid {
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
  }

  .page-about .timeline {
    padding: 4rem 2rem;
  }
  .page-about .timeline__grid {
    gap: 2rem;
    padding-left: 1rem;
  }
  .page-about .timeline__grid::before {
    left: 48px;
  }
  .page-about .timeline__node {
    grid-template-columns: 64px 1fr;
    gap: 1.5rem;
  }
  .page-about .timeline__node-icon {
    width: 64px;
    height: 64px;
  }
  .page-about .timeline__node-content {
    padding: 1.25rem 1.5rem;
  }
  .page-about .timeline__node-title {
    font-size: 1.2rem;
  }

  .page-about .vision {
    padding: 4rem 2rem;
  }
  .page-about .vision__inner {
    grid-template-columns: 1.3fr 0.9fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .contact-card {
    padding: 3rem 2rem 4rem;
  }
  .page-about .contact-card__inner {
    padding: 2.25rem 2rem;
  }
}

/* ===== 桌面宽屏微调 ===== */
@media (min-width: 1024px) {
  .page-about .content-container {
    max-width: 1120px;
    margin-left: auto;
    margin-right: auto;
  }
  .page-about .story-cover__content {
    padding-left: 2rem;
  }
}

/* ===== 减少动效 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-about .story-cover__title,
  .page-about .story-cover__lead,
  .page-about .story-cover__intro,
  .page-about .story-cover__index {
    animation: none;
  }
  .page-about .origin__stat-card,
  .page-about .timeline__node-icon,
  .page-about .timeline__node-content,
  .page-about .vision__actions .btn,
  .page-about .contact-card .btn {
    transition: none;
  }
}