/* ==========================================================================
   07-hanh-trinh HÀNH TRÌNH
   Tách từ index.html: <style> dòng 542–610 (giữ nguyên 100% nội dung).
   Timeline/hành trình phát triển DTR-Mart.
   ========================================================================== */
/* ============ JOURNEY ============ */
.journey {
  position: relative; z-index: 10;
  padding: 140px 40px 100px;
  max-width: 1080px; margin: 0 auto;
  background: var(--bg);
}
.journey-header { text-align: center; margin-bottom: 88px; }
.journey-header h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 700; letter-spacing: -0.03em;
  margin-bottom: 14px;
  color: var(--text);
}
.journey-header h2 span { color: var(--gold); }
.journey-header p {
  font-size: 12px; color: var(--text-4);
  letter-spacing: 2.4px; text-transform: uppercase;
  font-weight: 500;
}

.timeline { position: relative; padding-left: 40px; }
.timeline::before {
  content: ''; position: absolute;
  left: 6px; top: 0; bottom: 0;
  width: 1px;
  background: var(--border-strong);
}
.timeline-item {
  position: relative; margin-bottom: 56px;
  padding-left: 30px;
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.timeline-item.visible { opacity: 1; transform: translateY(0); }
.timeline-item::before {
  content: ''; position: absolute;
  left: -37px; top: 7px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--bg);
  border: 1.5px solid var(--border-strong);
  z-index: 2;
  transition: border-color 0.3s ease;
}
.timeline-item.visible::before { border-color: var(--gold); }

.timeline-year {
  font-family: 'Inter', sans-serif;
  font-size: 11px; font-weight: 600;
  letter-spacing: 1.8px; color: var(--text-3);
  margin-bottom: 8px; text-transform: uppercase;
}
.timeline-item:nth-child(4) .timeline-year,
.timeline-item:nth-child(5) .timeline-year { color: var(--gold-dim); }

.timeline-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 18px; font-weight: 700;
  color: var(--text); margin-bottom: 8px;
  letter-spacing: -0.015em;
}
.timeline-desc {
  font-size: 14px; color: var(--text-2);
  line-height: 1.7; max-width: 620px;
  letter-spacing: -0.005em;
}