/* 联系我们 */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info h2 { font-size: 28px; margin-bottom: 20px; }
.contact-info p { color: var(--text-secondary); line-height: 1.8; margin-bottom: 24px; }
.contact-item { display: flex; gap: 16px; margin-bottom: 24px; }
.contact-icon {
    width: 48px; height: 48px; border-radius: var(--radius-sm);
    background: var(--accent-glow); display: flex; align-items: center; justify-content: center;
    font-size: 22px; flex-shrink: 0;
}
.contact-item-text h4 { font-size: 14px; color: var(--text-muted); margin-bottom: 4px; }
.contact-item-text p { font-size: 16px; font-weight: 500; }

.contact-form { background: var(--bg-card); border-radius: var(--radius); padding: 40px; border: 1px solid var(--border); }
.contact-form h3 { font-size: 22px; margin-bottom: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; }
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%; padding: 12px 16px; background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    color: var(--text-primary); font-size: 14px;
    transition: border-color var(--transition);
    -webkit-appearance: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { outline: none; border-color: var(--accent); }
.form-group textarea { min-height: 120px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

@media (max-width: 768px) {
    .contact-grid { grid-template-columns: 1fr; gap: 32px; }
    .contact-info h2 { font-size: 22px; }
    .contact-info p { font-size: 14px; }
    .contact-item { gap: 12px; margin-bottom: 18px; }
    .contact-icon { width: 42px; height: 42px; font-size: 20px; }
    .contact-item-text p { font-size: 15px; }
    .contact-form { padding: 24px; }
    .contact-form h3 { font-size: 18px; margin-bottom: 20px; }
    .form-row { grid-template-columns: 1fr; gap: 0; }
    .form-group input,
    .form-group textarea,
    .form-group select { padding: 10px 14px; font-size: 16px; /* 16px 防止 iOS 缩放 */ }
}

@media (max-width: 480px) {
    .contact-info h2 { font-size: 20px; }
    .contact-item { gap: 10px; margin-bottom: 14px; }
    .contact-icon { width: 38px; height: 38px; font-size: 18px; border-radius: 6px; }
    .contact-item-text h4 { font-size: 12px; }
    .contact-item-text p { font-size: 14px; }
    .contact-form { padding: 18px; border-radius: 8px; }
    .contact-form h3 { font-size: 16px; margin-bottom: 16px; }
    .form-group { margin-bottom: 14px; }
    .form-group label { font-size: 13px; margin-bottom: 6px; }
}