/* ============================
   responsive.css - 响应式适配
   ============================ */

/* --- 平板 ≤ 1024px --- */
@media (max-width: 1024px) {
  :root {
    --nav-height: 64px;
  }

  .section {
    padding: 72px 0;
  }

  .section-title {
    font-size: 1.85rem;
  }

  .hero h1 {
    font-size: 2.4rem;
  }
  .hero p {
    font-size: 1.05rem;
  }
  .hero-stats {
    gap: 32px;
  }
  .hero-stat .number {
    font-size: 1.6rem;
  }

  .about {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about-image {
    order: -1;
  }
  .about-image img {
    height: 300px;
  }

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

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .contact-image {
    height: 260px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

/* --- 手机 ≤ 768px --- */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 1.5rem;
    margin-bottom: 8px;
  }
  .section-subtitle {
    font-size: 0.95rem;
    margin-bottom: 32px;
  }

  /* 导航 */
  .nav-links {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .mobile-menu {
    display: flex;
  }

  /* Hero */
  .hero {
    min-height: 100svh;
  }
  .hero h1 {
    font-size: 1.8rem;
  }
  .hero p {
    font-size: 0.95rem;
    margin-bottom: 28px;
  }
  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }
  .hero-buttons .btn {
    width: 100%;
    max-width: 280px;
  }
  .hero-stats {
    gap: 24px;
  }
  .hero-stat .number {
    font-size: 1.3rem;
  }
  .hero-stat .label {
    font-size: 0.75rem;
  }
  .hero-badge {
    font-size: 0.75rem;
    padding: 4px 14px;
  }

  /* 关于我们 */
  .about-features {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .about-image img {
    height: 220px;
  }
  .about-text h2 {
    font-size: 1.5rem;
  }

  /* 产品 */
  .products-tabs {
    gap: 6px;
    margin-bottom: 32px;
  }
  .products-tab {
    padding: 8px 18px;
    font-size: 0.85rem;
  }
  .products-grid {
    grid-template-columns: 1fr;
  }
  .product-card-image {
    height: 140px;
  }

  /* 案例 */
  .cases-grid {
    grid-template-columns: 1fr;
  }
  .case-card-image {
    height: 160px;
  }

  /* 联系 */
  .contact-info h2 {
    font-size: 1.5rem;
  }
  .contact-image {
    height: 200px;
  }

  /* 页脚 */
  .footer {
    padding: 48px 0 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  /* CTA */
  .cta-section {
    padding: 56px 0;
  }
  .cta-section h2 {
    font-size: 1.5rem;
  }
}

/* --- 小手机 ≤ 480px --- */
@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.5rem;
  }
  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }
  .about-feature {
    padding: 12px;
  }
}