/* ===== About Section ===== */
#about {
  background: var(--color-white);
  position: relative;
}

#grid-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.about-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  width: 100%;
}

.about-content h2 {
  font-size: var(--font-size-h2);
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
}

.about-philosophy {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  text-align: center;
  margin: 0 auto 1.5rem;
  position: relative;
  display: block;
}

.about-philosophy::after {
  content: "";
  display: block;
  width: 3rem;
  height: 1px;
  background: var(--color-border);
  margin: 1rem auto 0;
}

.about-content > p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto 1.5rem;
  text-align: center;
}

.about-name-explain {
  font-size: 0.92rem;
  line-height: 1.9;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 3rem;
  text-align: center;
  font-style: italic;
}

/* ===== Features Grid ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: rgba(245, 245, 245, 0.85);
  backdrop-filter: blur(8px);
  padding: var(--card-padding);
  border-radius: var(--card-radius);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.feature-card h3 {
  font-size: var(--font-size-h3);
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.feature-card p {
  color: var(--color-text-secondary);
  line-height: 1.7;
  font-size: 0.95rem;
}