/* ============================================
   about.css V2 — 关于我们页面 · 深色科技风
   ============================================ */

/* --- Company Intro --- */
.company-intro {
  text-align: center;
}

.company-intro-text {
  max-width: 800px;
  margin: 0 auto;
  font-size: var(--text-lg);
  color: var(--text-muted);
  line-height: 2;
}

.company-intro-text strong {
  color: var(--text-bright);
  font-weight: 600;
}

.company-intro-highlights {
  display: flex;
  justify-content: center;
  gap: var(--space-2xl);
  margin-top: var(--space-3xl);
  flex-wrap: wrap;
}

/* ===== Company Brochure · Editorial Chapters ===== */
.company-brochure { padding-top: 0; }

.brochure-chapters {
  display: flex;
  flex-direction: column;
  gap: var(--space-4xl);
  max-width: 1180px;
  margin: var(--space-3xl) auto 0;
}

.brochure-chapter {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: start;
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--border-subtle);
}

.brochure-chapter:last-child {
  border-bottom: none;
}

.brochure-chapter-reverse .brochure-chapter-body { order: 2; }
.brochure-chapter-reverse .brochure-chapter-slide { order: 3; }

.brochure-chapter-index {
  grid-column: 1;
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brochure-chapter-no {
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 500;
  font-style: italic;
  font-variation-settings: "opsz" 144, "SOFT" 100, "WONK" 1;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  letter-spacing: -0.04em;
}

.brochure-chapter-kicker {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-primary);
  letter-spacing: 0.03em;
}

.brochure-chapter-body {
  grid-column: 2;
  padding-right: var(--space-md);
}

.brochure-chapter-title {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 600;
  font-variation-settings: "opsz" 96, "SOFT" 30;
  color: var(--text-bright);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
}

.brochure-chapter-body p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.95;
  letter-spacing: 0.008em;
  margin-bottom: var(--space-xl);
}

.brochure-chapter-facts {
  border-top: 1px dashed rgba(0,0,0,0.12);
  padding-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 0.55em;
}

.brochure-chapter-facts li {
  display: flex;
  align-items: baseline;
  gap: 1em;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.brochure-chapter-facts strong {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: 1.05em;
  font-variation-settings: "opsz" 96, "SOFT" 100, "WONK" 1;
  color: var(--color-primary);
  min-width: 5em;
  flex-shrink: 0;
  letter-spacing: -0.01em;
  font-variant-numeric: oldstyle-nums;
}

.brochure-chapter-slide {
  grid-column: 3;
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #05080d;
  border: 1px solid var(--border-card);
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
  transition: transform .4s ease, box-shadow .4s ease;
}

.brochure-chapter-slide:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.18);
}

.brochure-chapter-slide img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

@media (max-width: 960px) {
  .brochure-chapter {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  .brochure-chapter-index {
    position: static;
    flex-direction: row;
    align-items: baseline;
    gap: 1em;
  }
  .brochure-chapter-no { font-size: 2.4rem; }
  .brochure-chapter-body,
  .brochure-chapter-slide { grid-column: 1; }
  .brochure-chapter-reverse .brochure-chapter-body { order: 0; }
  .brochure-chapter-reverse .brochure-chapter-slide { order: 0; }
}


.company-highlight {
  flex: 1;
  min-width: 220px;
  max-width: 320px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-card);
  padding: var(--space-2xl);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

/* Inner top glow */
.company-highlight::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(0,0,0,0.03) 0%, transparent 40%);
  pointer-events: none;
}

.company-highlight:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow-sm), var(--shadow-card);
  transform: translateY(-4px);
}

.company-highlight-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 1.5rem;
  position: relative;
}

.company-highlight-icon::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  background: inherit;
  filter: blur(12px);
  opacity: 0.4;
  z-index: -1;
}

.company-highlight-icon-primary {
  background: rgba(255, 107, 94, 0.12);
  color: var(--color-primary);
}

.company-highlight-icon-secondary {
  background: rgba(245, 166, 35, 0.12);
  color: var(--color-secondary);
}

.company-highlight-icon-accent {
  background: rgba(52, 199, 89, 0.12);
  color: var(--color-accent);
}

.company-highlight-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: var(--space-xs);
}

.company-highlight-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- Timeline --- */
.timeline-section {
  overflow: hidden;
  position: relative;
}

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-xl) 0;
}

/* Glowing vertical line with gradient */
.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  background: linear-gradient(
    to bottom,
    transparent,
    var(--color-primary) 15%,
    var(--color-secondary) 50%,
    var(--color-accent) 85%,
    transparent
  );
  box-shadow:
    0 0 8px rgba(255,107,94,0.3),
    0 0 20px rgba(255,107,94,0.1);
}

.timeline-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  margin-bottom: var(--space-3xl);
}

.timeline-item:last-child {
  margin-bottom: 0;
}

/* Alternate left and right */
.timeline-item:nth-child(odd) {
  flex-direction: row;
  padding-right: calc(50% + var(--space-2xl));
  text-align: right;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
  padding-left: calc(50% + var(--space-2xl));
  text-align: left;
}

/* 默认可见，JS 为渐入动画增强（避免 Observer 未触发时永久隐藏） */
.timeline-item .timeline-content {
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.timeline-item.is-hidden:nth-child(odd) .timeline-content {
  opacity: 0;
  transform: translateX(-60px);
}
.timeline-item.is-hidden:nth-child(even) .timeline-content {
  opacity: 0;
  transform: translateX(60px);
}
.timeline-item.visible .timeline-content {
  opacity: 1;
  transform: translateX(0);
}

/* Timeline dot with glow */
.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 3px solid var(--color-primary);
  z-index: 2;
  top: 4px;
  transition: all var(--transition-base);
  box-shadow: 0 0 12px rgba(255,107,94,0.4), 0 0 24px rgba(255,107,94,0.2);
}

.timeline-item:nth-child(3n+2) .timeline-dot {
  border-color: var(--color-secondary);
  box-shadow: 0 0 12px rgba(245,166,35,0.4), 0 0 24px rgba(245,166,35,0.2);
}

.timeline-item:nth-child(3n) .timeline-dot {
  border-color: var(--color-accent);
  box-shadow: 0 0 12px rgba(52,199,89,0.4), 0 0 24px rgba(52,199,89,0.2);
}

.timeline-content {
  flex: 1;
}

.timeline-year {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 500;
  font-style: italic;
  font-variation-settings: "opsz" 144, "SOFT" 100, "WONK" 1;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: lining-nums;
  filter: drop-shadow(0 0 14px rgba(255,107,94,0.18));
}

.timeline-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.95;
  letter-spacing: 0.01em;
}

/* --- Contact Section --- */
.contact-section {
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 94, 0.06) 0%, transparent 70%);
  top: -200px;
  right: -200px;
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  max-width: 960px;
  margin: 0 auto;
}

.contact-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  border: 1px solid var(--border-card);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

/* Inner top glow */
.contact-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(0,0,0,0.03) 0%, transparent 40%);
  pointer-events: none;
}

.contact-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow-sm), var(--shadow-card);
  transform: translateY(-2px);
}

.contact-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  position: relative;
}

.contact-card-icon::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  background: inherit;
  filter: blur(12px);
  opacity: 0.4;
  z-index: -1;
}

.contact-card-icon-primary {
  background: rgba(255,107,94,0.12);
  color: var(--color-primary);
}

.contact-card-icon-secondary {
  background: rgba(245,166,35,0.12);
  color: var(--color-secondary);
}

.contact-card-icon-accent {
  background: rgba(52,199,89,0.12);
  color: var(--color-accent);
}

.contact-card-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: var(--space-sm);
}

.contact-card-value {
  font-size: var(--text-lg);
  color: var(--text-muted);
  line-height: 1.8;
}

.contact-card-value a {
  color: var(--color-primary);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.contact-card-value a:hover {
  color: var(--color-primary-bright);
  text-shadow: 0 0 12px rgba(255,107,94,0.3);
}

.contact-card-note {
  font-size: var(--text-xs);
  color: var(--text-dim);
  margin-top: var(--space-xs);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .timeline::before {
    left: 24px;
  }

  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    flex-direction: row;
    padding-left: calc(24px + var(--space-2xl));
    padding-right: 0;
    text-align: left;
  }

  .timeline-item:nth-child(odd) .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    transform: translateX(40px);
  }

  .timeline-item.visible .timeline-content {
    transform: translateX(0);
  }

  .timeline-dot {
    left: 24px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .company-intro-highlights {
    flex-direction: column;
    align-items: center;
    gap: var(--space-xl);
  }

  .company-highlight {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .timeline-item {
    margin-bottom: var(--space-2xl);
  }

  .contact-card {
    padding: var(--space-lg);
  }
}