/* Timeline */
.timeline {
  position: relative;
  margin-top: 64px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
  transform: translateX(-50%);
}

.tl-step {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  position: relative;
  margin-bottom: 80px;
}

.tl-step:last-child {
  margin-bottom: 0;
}

.tl-dot {
  position: absolute;
  left: 50%;
  top: 24px;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--blue-500);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  z-index: 2;
  box-shadow: 0 0 0 6px var(--bg), 0 0 0 8px var(--blue-100);
}

.tl-text {
  padding-right: 40px;
}

.tl-text h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  margin-top: 16px;
}

.tl-text p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.tl-step.reverse .tl-text {
  order: 2;
  padding-right: 0;
  padding-left: 40px;
}

.tl-step.reverse .tl-visual {
  order: 1;
}

.tl-visual-box {
  background: var(--gray-50);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  min-height: 200px;
}

/* App mockup */
.app-mock {
  background: var(--bg);
  border-radius: 10px;
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.app-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--border);
}

.app-topbar-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gray-700);
}

.app-topbar-badge {
  font-size: 0.68rem;
  font-weight: 700;
  background: var(--blue-500);
  color: #fff;
  padding: 2px 8px;
  border-radius: 100px;
}

.app-body {
  padding: 16px;
}

.app-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-50);
  font-size: 0.8rem;
}

.app-row:last-child {
  border-bottom: none;
}

.app-row-label {
  color: var(--text-muted);
}

.app-row-val {
  font-weight: 600;
  color: var(--text);
}

/* Mini-chat */
.mini-chat {
  margin-top: 12px;
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: 10px;
  padding: 12px;
}

.mini-chat-header {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--blue-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.mini-chat-header svg {
  width: 14px;
  height: 14px;
}

.mini-msg {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.mini-msg:last-child {
  margin-bottom: 0;
}

.mini-avatar {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  flex-shrink: 0;
  font-size: 0.6rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mini-bubble {
  background: var(--bg);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.78rem;
  color: var(--gray-700);
  line-height: 1.5;
  border: 1px solid var(--blue-100);
}

/* Scenario compare */
.scenario-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 48px;
}

.scenario-card {
  border-radius: var(--radius-lg);
  padding: 32px;
}

.scenario-card.old {
  background: var(--bg);
  border: 1px solid var(--gray-200);
}

.scenario-card.new {
  background: var(--blue-500);
  color: #fff;
  box-shadow: var(--shadow-lg);
}

.scenario-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.scenario-step {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
}

.scenario-num {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.scenario-card.old .scenario-num {
  background: var(--gray-50);
  color: var(--gray-500);
}

.scenario-card.new .scenario-num {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.scenario-step p {
  font-size: 0.88rem;
  line-height: 1.6;
}

.scenario-result {
  margin-top: 20px;
  padding-top: 16px;
  font-size: 0.85rem;
  font-weight: 600;
}

.scenario-card.old .scenario-result {
  border-top: 1px solid var(--border);
  color: var(--red-600);
}

.scenario-card.new .scenario-result {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

@media (max-width: 900px) {
  .timeline::before {
    left: 24px;
  }

  .tl-step {
    grid-template-columns: 1fr;
    padding-left: 60px;
  }

  .tl-dot {
    left: 24px;
  }

  .tl-text {
    padding-right: 0 !important;
    padding-left: 0 !important;
  }

  .tl-step.reverse .tl-text {
    order: 1;
  }

  .tl-step.reverse .tl-visual {
    order: 2;
  }

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