.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.feature-item {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
}

.feature-item h3 {
  margin: 0.4rem 0 0.45rem;
}

.feature-item p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.6;
}

.feature-item ul {
  margin: 0.65rem 0 0;
  padding-left: 1rem;
  color: var(--text-soft);
  display: grid;
  gap: 0.3rem;
}

.stack {
  display: grid;
  gap: 0.75rem;
}

.stack .tile {
  padding: 0.9rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.stack .tile b {
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  color: var(--primary);
}

.timeline {
  padding: 1rem;
}

.timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.timeline-list li {
  position: relative;
  border-left: 3px solid rgba(11, 136, 255, 0.2);
  padding: 0.25rem 0 0.25rem 0.95rem;
}

.timeline-list li::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 0.85rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--primary);
}

.timeline-list h4 {
  margin: 0;
}

.timeline-list p {
  margin: 0.35rem 0 0;
  color: var(--text-soft);
}

@media (max-width: 980px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}


@media (max-width: 640px) {
  .feature-item {
    padding: 0.9rem;
  }

  .stack .tile {
    flex-direction: column;
    align-items: flex-start;
  }

  .timeline {
    padding: 0.9rem;
  }
}