/* ============================================
   CONCEPT PAGE
   ============================================ */

.page-header {
  padding: 140px 32px 80px;
  background: linear-gradient(180deg, #111 0%, #0a0a0a 100%);
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.page-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 500;
  line-height: 1.1;
  margin-bottom: 12px;
}

.page-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.5);
  max-width: 400px;
  margin: 0 auto;
}

/* ---- Concept Intro ---- */
.concept-intro {
  padding: 80px 32px;
  background: #0a0a0a;
}

.concept-intro-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

.concept-image {
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4/3;
}

.concept-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---- Principles ---- */
.principles {
  padding: 80px 32px;
  background: #111;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.principles-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.principle-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 32px;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.principle-card:hover {
  border-color: rgba(184,149,106,0.3);
  transform: translateY(-4px);
}

.principle-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(184,149,106,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.principle-card h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 10px;
}

.principle-card p {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
}

/* ---- Process ---- */
.process {
  padding: 80px 32px;
  background: #0a0a0a;
}

.process-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.process-header {
  text-align: center;
  margin-bottom: 48px;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-step {
  position: relative;
  padding-top: 24px;
}

.process-step::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #B8956A, transparent);
}

.step-num {
  font-size: 12px;
  color: #B8956A;
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 12px;
  display: block;
}

.process-step h3 {
  font-size: 17px;
  font-weight: 500;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .concept-intro-inner { grid-template-columns: 1fr; }
  .principles-inner { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .process-steps { grid-template-columns: 1fr; }
}