/* ═══════════════════════════════════════════════
   明沣科技 - 响应式适配
   ═══════════════════════════════════════════════ */

/* ─── Tablet (≤1024px) ─── */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
    padding: 100px 24px 60px;
  }

  .hero-desc { margin: 0 auto 36px; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }

  .hero-visual { display: none; }

  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }

  .news-grid { grid-template-columns: repeat(2, 1fr); }

  .partner-showcase {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .partner-logos-grid { justify-content: center; }
  .partner-orbits { margin-top: 40px; }

  .about-intro {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

/* ─── Mobile (≤768px) ─── */
@media (max-width: 768px) {
  .nav-container {
    height: 64px;
    gap: 0;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 320px;
    height: 100vh;
    background: white;
    flex-direction: column;
    align-items: stretch;
    padding: 80px 24px 24px;
    gap: 4px;
    transition: right 0.3s ease;
    z-index: 1000;
    border-left: 1px solid var(--border);
    box-shadow: -4px 0 30px rgba(26,109,255,0.06);
  }

  .nav-links.open { right: 0; }

  .nav-links li a {
    padding: 14px 16px;
    font-size: 16px;
    display: block;
    border-radius: var(--radius-sm);
  }

  .nav-toggle { display: flex; }

  .nav-cta { display: none; }

  .search-btn-label { display: none; }
  .nav-search-btn { padding: 8px 10px; }

  .hero {
    min-height: auto;
  }

  .hero-container {
    padding: 100px 20px 60px;
  }

  .title-line {
    font-size: 32px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .hero-scroll { display: none; }

  .section {
    padding: 60px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .service-card, .feature-item {
    padding: 24px 20px;
  }

  .team-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .cases-grid {
    grid-template-columns: 1fr;
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .case-filters {
    overflow-x: auto;
    padding-bottom: 8px;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
  }

  .service-detail {
    flex-direction: column;
    gap: 16px;
    padding: 24px;
  }

  .partner-orbits {
    width: 240px;
    height: 240px;
  }

  .ring-1 { width: 160px; height: 160px; }
  .ring-2 { width: 220px; height: 220px; }

  .about-stats-card {
    position: relative;
    bottom: 0;
    margin-top: -20px;
    padding: 16px 20px;
    gap: 16px;
  }

  .contact-form-panel {
    padding: 24px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .page-hero {
    padding: 100px 0 60px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }

  .map-placeholder {
    height: 200px;
  }

  .interactive-map {
    height: 280px;
  }

  .map-info-overlay {
    padding: 12px 16px;
    flex-direction: column;
    text-align: center;
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
}

/* ─── Small Mobile (≤480px) ─── */
@media (max-width: 480px) {
  .section-container {
    padding: 0 16px;
  }

  .hero-container {
    padding: 90px 16px 40px;
  }

  .hero-title .title-line {
    font-size: 28px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    justify-content: center;
  }

  .stat-number {
    font-size: 26px;
  }

  .footer-container {
    padding: 60px 16px 24px;
  }

  /* Services Card Grid */
  .services-card-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
}

@media (max-width: 640px) {
  .services-card-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .service-card-item {
    padding: 24px 20px;
  }
}