/* ========================================
   联系我们页面样式 - 工程美学版本
   Engineering Aesthetics - Contact Page
   ======================================== */

/* Page Hero */
.page-hero {
  padding: calc(var(--header-height) + var(--space-16)) 0 var(--space-16);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-brand-primary), transparent);
  opacity: 0.5;
}

.page-hero .bg-grid {
  opacity: 0.5;
}

.page-hero-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.page-hero .label {
  display: inline-block;
  margin-bottom: var(--space-4);
}

.page-hero h1 {
  font-size: var(--text-5xl);
  margin-bottom: var(--space-6);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-hero p {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Process Section - 三步流程 */
.process-section {
  padding: var(--space-32) 0;
  position: relative;
}

.process-intro {
  text-align: center;
  margin-bottom: var(--space-16);
}

.process-intro h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
  font-weight: 600;
}

.process-intro p {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
}

.process-flow {
  max-width: 800px;
  margin: 0 auto;
}

.process-step-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  gap: var(--space-8);
  position: relative;
  transition: all var(--duration-base);
}

.process-step-card:hover {
  border-color: var(--color-border-brand);
}

.step-number {
  font-family: var(--font-mono);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-brand-primary);
  opacity: 0.3;
  line-height: 1;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-icon {
  width: 48px;
  height: 48px;
  color: var(--color-brand-primary);
  margin-bottom: var(--space-4);
}

.step-content h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  font-weight: 600;
}

.step-desc {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

.step-details {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.detail-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.detail-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.detail-value {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.step-connector {
  display: flex;
  justify-content: center;
  padding: var(--space-4) 0;
  color: var(--color-text-muted);
}

.step-connector svg {
  width: 40px;
  height: 60px;
}

/* Contact Methods Section */
.contact-methods-section {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-32) 0;
  position: relative;
}

.contact-methods-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-brand-primary), transparent);
  opacity: 0.3;
}

.methods-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.method-card {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--duration-base);
  position: relative;
}

.method-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--duration-base);
}

.method-card:hover {
  border-color: var(--color-border-brand);
  transform: translateY(-4px);
}

.method-card:hover::before {
  opacity: 1;
}

.method-icon {
  width: 48px;
  height: 48px;
  color: var(--color-brand-primary);
  margin: 0 auto var(--space-6);
}

.method-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
  font-weight: 600;
}

.method-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

.method-link {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--color-brand-primary);
  display: block;
  margin-bottom: var(--space-2);
  transition: color var(--duration-fast);
}

.method-link:hover {
  color: var(--color-brand-secondary);
}

.method-note {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.qr-code {
  width: 100px;
  height: 100px;
  margin: var(--space-4) auto 0;
  padding: var(--space-2);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.qr-code svg {
  width: 100%;
  height: 100%;
}

.address-info {
  margin-top: var(--space-4);
  padding: var(--space-4);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: left;
}

.address-line {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}

.address-detail {
  font-size: var(--text-base);
  color: var(--color-text-primary);
  font-weight: 500;
  margin-bottom: var(--space-1);
}

.address-building {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

/* Expect Section */
.expect-section {
  padding: var(--space-32) 0;
}

.expect-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  max-width: 900px;
  margin: 0 auto;
}

.expect-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.expect-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-6);
  font-weight: 600;
}

.expect-do h3 {
  color: var(--color-success);
}

.expect-dont h3 {
  color: var(--color-error);
}

.expect-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.expect-card li {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  padding-left: var(--space-5);
  position: relative;
  line-height: 1.6;
}

.expect-card li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--color-brand-primary);
  font-weight: 600;
}

/* FAQ Section */
.faq-section {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-32) 0;
  position: relative;
}

.faq-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-brand-primary), transparent);
  opacity: 0.3;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.faq-item {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--duration-base);
}

.faq-item:hover {
  border-color: var(--color-border-strong);
}

.faq-item h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
  font-weight: 600;
}

.faq-item p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Footer adjustment */
.footer {
  border-top: none;
}

/* Responsive */
@media (max-width: 1024px) {
  .methods-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .expect-grid {
    grid-template-columns: 1fr;
  }
  
  .faq-grid {
    grid-template-columns: 1fr;
  }
  
  .process-step-card {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .step-number {
    font-size: var(--text-3xl);
  }
}

@media (max-width: 768px) {
  .page-hero h1 {
    font-size: var(--text-4xl);
  }
  
  .methods-grid {
    grid-template-columns: 1fr;
  }
  
  .step-details {
    flex-direction: column;
    gap: var(--space-3);
  }
}