/* About Hero */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about-intro__content h2 {
  margin-bottom: var(--space-lg);
}

.about-intro__content p {
  margin-bottom: var(--space-md);
}

.about-intro__visual {
  display: flex;
  justify-content: center;
}

.about-visual-box {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #eff6ff, #f5f3ff);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  border: 1px solid var(--color-border);
}

/* Values */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.value-card {
  text-align: center;
  padding: var(--space-2xl);
  background: white;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.value-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.value-card h3 {
  margin-bottom: var(--space-sm);
}

.value-card p {
  font-size: 0.9rem;
}

/* Timeline */
.company-timeline {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  padding-left: 40px;
}

.company-timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
}

.milestone {
  position: relative;
  margin-bottom: var(--space-2xl);
  padding-left: var(--space-xl);
}

.milestone::before {
  content: '';
  position: absolute;
  left: -32px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gradient-cta);
  border: 3px solid white;
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.milestone__year {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.milestone h4 {
  margin-bottom: var(--space-xs);
}

.milestone p {
  font-size: 0.9rem;
}

/* Contact Form */
.contact-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.contact-form {
  background: white;
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.form-group label .required {
  color: #dc2626;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--color-text);
  background: white;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group .error-msg {
  display: none;
  font-size: 0.8rem;
  color: #dc2626;
  margin-top: var(--space-xs);
}

.form-group.has-error input,
.form-group.has-error textarea {
  border-color: #dc2626;
}

.form-group.has-error .error-msg {
  display: block;
}

.form-submit {
  width: 100%;
}

/* Contact Info */
.contact-info h3 {
  margin-bottom: var(--space-xl);
}

.contact-info__item {
  display: flex;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.contact-info__item:last-child {
  border-bottom: none;
}

.contact-info__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.contact-info__content h4 {
  margin-bottom: var(--space-xs);
}

.contact-info__content p {
  font-size: 0.9rem;
}

.contact-info__content .wechat-qr {
  width: 120px;
  height: 120px;
  margin: 0;
  display: block;
}

/* Success Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  max-width: 400px;
  text-align: center;
}

.modal__icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.modal h3 {
  margin-bottom: var(--space-sm);
}

.modal p {
  margin-bottom: var(--space-xl);
}

@media (max-width: 768px) {
  .about-intro { grid-template-columns: 1fr; }
  .about-intro__visual { order: -1; }
  .values-grid { grid-template-columns: 1fr; }
  .contact-section { grid-template-columns: 1fr; }
}