/* ===== page-index.css — 首页专用样式 ===== */

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #0a0a16 0%, #0f1a3e 40%, #16213e 70%, #0f3460 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 40%, rgba(108,92,231,0.18) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 60%, rgba(0,210,255,0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(108,92,231,0.08) 0%, transparent 40%);
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--bg-primary), transparent);
  z-index: 1;
}
.hero__content { position: relative; z-index: 2; padding: 0 var(--space-lg); }
.hero__badge {
  display: inline-flex;
  align-items: center;
  padding: 10px 24px;
  background: rgba(108,92,231,0.12);
  border: 1px solid rgba(108,92,231,0.25);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-primary-light);
  margin-bottom: var(--space-2xl);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  letter-spacing: 0.02em;
}
.hero__title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: var(--space-xl);
  letter-spacing: -0.03em;
}
.hero__subtitle {
  font-size: var(--text-xl);
  color: rgba(255,255,255,0.65);
  max-width: 780px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.8;
  white-space: nowrap;
}
.hero__actions { display: flex; gap: var(--space-lg); justify-content: center; flex-wrap: wrap; }
.hero__title-main {
  display: block;
  font-size: clamp(3rem, 7vw, 5.5rem);
  background: linear-gradient(135deg, #6C5CE7 0%, #00D2FF 50%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
}
.hero__title-sub {
  display: block;
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xl);
}
.hero__demo {
  max-width: 580px;
  margin: var(--space-2xl) auto var(--space-2xl);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(108,92,231,0.3);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.hero__demo-title {
  text-align: center;
  color: rgba(255,255,255,0.6);
  font-size: var(--text-sm);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.1em;
}
.hero__demo-chat {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.chat-msg {
  padding: 10px 16px;
  border-radius: 14px;
  max-width: 80%;
  font-size: var(--text-sm);
  line-height: 1.6;
  animation: msgIn 0.4s ease;
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.chat-msg--user {
  background: linear-gradient(135deg, #6C5CE7, #a855f7);
  color: #fff;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}
.chat-msg--ai {
  background: rgba(255,255,255,0.08);
  color: #fff;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
  border: 1px solid rgba(108,92,231,0.2);
}
.hero__trust {
  display: flex;
  gap: var(--space-xl);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-xl);
  color: rgba(255,255,255,0.6);
  font-size: var(--text-sm);
}
.hero__trust span::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #00D2FF;
  border-radius: 50%;
  margin-right: 6px;
  vertical-align: middle;
}

/* ===== Stats ===== */
.stats-section {
  padding: var(--space-5xl) 0;
  background: var(--bg-secondary);
  position: relative;
}
.stats-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(108,92,231,0.3) 50%, transparent 100%);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}
.stat-item {
  padding: var(--space-xl) var(--space-md);
  position: relative;
}
.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%);
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, transparent, rgba(108,92,231,0.3), transparent);
}
.stat-item__number {
  font-size: clamp(2.2rem, 4vw, 3.8rem);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-sm);
  line-height: 1.1;
}
.stat-item__label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}

/* ===== Services Grid ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl) var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

/* ===== Trust Wall ===== */
.trust-wall { padding: var(--space-3xl) 0; background: var(--bg-secondary); border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.trust-wall__title { text-align: center; font-size: var(--text-sm); color: var(--text-muted); margin-bottom: var(--space-xl); letter-spacing: 0.1em; text-transform: uppercase; }
.trust-wall__logos { display: grid; grid-template-columns: repeat(8, 1fr); gap: var(--space-md); align-items: center; }
.trust-logo {
  padding: var(--space-md) var(--space-sm); text-align: center; font-size: var(--text-sm);
  color: var(--text-muted); background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); transition: all var(--transition-base);
}
.trust-logo:hover { color: var(--text-primary); border-color: var(--border-color-hover); transform: translateY(-2px); }
@media (max-width: 768px) { .trust-wall__logos { grid-template-columns: repeat(4, 1fr); } }
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--gradient-card-border);
  opacity: 0;
  transition: opacity var(--transition-base);
}
.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-xl);
}
.service-card:hover::before { opacity: 1; }
.service-card > * { position: relative; z-index: 1; }
.service-card__icon {
  width: 68px;
  height: 68px;
  border-radius: var(--radius-xl);
  background: rgba(108,92,231,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  margin-bottom: var(--space-lg);
  transition: all var(--transition-base);
  border: 1px solid rgba(108,92,231,0.1);
}
.service-card:hover .service-card__icon {
  background: var(--gradient-primary);
  box-shadow: var(--shadow-glow);
  border-color: transparent;
  transform: scale(1.05);
}
.service-card__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}
.service-card__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}
.service-card__link {
  font-size: var(--text-sm);
  color: var(--color-primary-light);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}
.service-card__link:hover { color: var(--color-secondary); gap: var(--space-sm); }

/* ===== Case Grid ===== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}
.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  display: block;
  text-decoration: none;
  color: inherit;
}
.case-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-xl);
}
.case-card__image {
  width: 100%;
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}
.case-card:hover .case-card__image { transform: scale(1.02); }
.case-card__image-icon { font-size: 3.5rem; opacity: 0.6; transition: opacity var(--transition-base); }
.case-card:hover .case-card__image-icon { opacity: 0.9; }
.case-card__body { padding: var(--space-xl); }
.case-card__category {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(108,92,231,0.08);
  border: 1px solid rgba(108,92,231,0.15);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--color-primary-light);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.02em;
}
.case-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}
.case-card__summary {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Timeline ===== */
.timeline-section {
  padding: var(--space-5xl) 0;
  background: var(--bg-secondary);
  position: relative;
}
.timeline-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(108,92,231,0.25) 50%, transparent 100%);
}
.timeline-wrapper { max-width: 700px; margin: 0 auto; }
.timeline-item {
  position: relative;
  margin-bottom: var(--space-2xl);
  padding-left: 56px;
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.timeline-item:last-child { margin-bottom: 0; border-bottom: none; padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: 0; top: 4px;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--gradient-primary);
  opacity: 0.15;
}
.timeline-item::after {
  content: '';
  position: absolute;
  left: 7px; top: 11px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 16px rgba(108,92,231,0.4);
}
.timeline-item__year {
  font-size: var(--text-2xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-xs);
}
.timeline-item__content {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .hero { min-height: 85vh; }
  .hero__badge { font-size: var(--text-xs); padding: 8px 16px; }
  .hero__title-main { font-size: clamp(2.2rem, 9vw, 3rem); }
  .hero__title-sub { font-size: clamp(1rem, 4vw, 1.3rem); }
  .hero__subtitle {
    font-size: var(--text-base);
    white-space: normal;
    max-width: 100%;
    padding: 0 var(--space-md);
  }
  .hero__demo { padding: var(--space-md); margin: var(--space-lg) var(--space-md); }
  .chat-msg { font-size: var(--text-xs); padding: 8px 12px; }
  .hero__actions { flex-direction: column; align-items: center; }
  .hero__actions .btn { width: 100%; max-width: 280px; }
  .hero__trust { gap: var(--space-md); font-size: var(--text-xs); }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }
  .stat-item:not(:last-child)::after { display: none; }
  .stat-item__number { font-size: 2rem; }

  .services-grid { grid-template-columns: 1fr; }
  .service-card { padding: var(--space-xl); }
  .service-card__icon { width: 56px; height: 56px; font-size: 24px; }

  .case-grid { grid-template-columns: 1fr; }
  .case-card__image-icon { font-size: 2.5rem; }
  .case-card__body { padding: var(--space-lg); }

  .timeline-item { padding-left: 44px; }
  .timeline-item::before { width: 18px; height: 18px; left: 2px; }
  .timeline-item::after { left: 7px; top: 8px; width: 8px; height: 8px; }
}