/* =============================================
   劲朗科技官网 - 响应式样式
   断点：1024px（平板）、768px（手机）、480px（小屏手机）
   ============================================= */

/* ----- 平板：<= 1024px ----- */
@media (max-width: 1024px) {

  /* 导航 */
  .nav-cta {
    display: none;
  }

  /* Hero */
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
    padding-top: calc(var(--nav-height) + 20px);
  }

  .hero-title {
    font-size: 2.4rem;
  }

  .hero-subtitle {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

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

  .hero-visual {
    max-width: 480px;
    margin: 0 auto;
  }

  .hero-stats {
    justify-content: center;
  }

  /* 优势网格 */
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 业务卡片 */
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 合作客户 */
  .clients-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* 案例 Banner */
  .cases-banner-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .cases-banner-text .section-title {
    text-align: center;
  }

  .cases-banner-text .section-desc {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }

  /* 页脚 */
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  /* 服务详情 */
  .service-detail-item {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .service-detail-item.reverse {
    direction: ltr;
  }

  /* 案例卡片 */
  .cases-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  /* MES 模块 */
  .modules-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .solution-card-grid,
  .solution-feature-grid,
  .scenario-grid,
  .process-card-grid,
  .deliver-grid,
  .implementation-grid {
    grid-template-columns: 1fr;
  }

  /* MES 行业 */
  .industries-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* MES 结果 */
  .results-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 关于我们 */
  .about-intro-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  /* 联系我们 */
  .contact-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .solution-hero-inner,
  .solution-split {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .solution-hero-actions,
  .service-actions {
    justify-content: center;
  }

  .solution-card-grid,
  .solution-feature-grid,
  .scenario-grid,
  .process-card-grid,
  .deliver-grid,
  .implementation-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ----- 手机：<= 768px ----- */
@media (max-width: 768px) {

  /* 全局 */
  :root {
    --nav-height: 60px;
  }

  .section-title {
    font-size: 1.6rem;
  }

  /* 导航（汉堡菜单） */
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background: rgba(10, 31, 68, 0.97);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 20px 24px 32px;
    gap: 4px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    border-top: 1px solid rgba(255,255,255,0.08);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-links a {
    padding: 12px 16px;
    font-size: 15px;
    width: 100%;
    border-radius: 8px;
  }

  /* Hero */
  .hero-title {
    font-size: 1.9rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-stats {
    gap: 20px;
  }

  .stat-num {
    font-size: 1.6rem;
  }

  /* 优势 */
  .advantages {
    padding: 60px 0;
  }

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

  /* 业务 */
  .services-preview {
    padding: 60px 0;
  }

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

  /* 合作客户 */
  .clients {
    padding: 60px 0;
  }

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

  /* 案例 Banner */
  .cases-banner {
    padding: 60px 0;
  }

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

  /* 页脚 */
  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  /* 内页 Hero */
  .page-hero {
    padding: 110px 0 60px;
  }

  .page-hero-title {
    font-size: 1.8rem;
  }

  /* 服务页 */
  .services-detail {
    padding: 60px 0;
  }

  .service-detail-img {
    height: 220px;
  }

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

  /* 案例页 */
  .cases-cards {
    grid-template-columns: 1fr;
  }

  /* MES 页 */
  .mes-pain-points,
  .mes-device-section,
  .mes-implementation-gallery,
  .mes-modules,
  .mes-architecture,
  .mes-process,
  .mes-industries,
  .mes-results,
  .mes-cta {
    padding: 60px 0;
  }

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

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

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

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

  .process-timeline {
    flex-direction: column;
    gap: 32px;
  }

  .process-timeline::before {
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    height: auto;
    right: auto;
  }

  .process-step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    text-align: left;
    padding: 0;
  }

  .step-dot {
    margin: 0;
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    font-size: 20px;
  }

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

  /* 关于我们 */
  .about-intro,
  .about-history,
  .about-clients {
    padding: 60px 0;
  }

  .about-intro-img {
    height: 260px;
  }

  .history-timeline::before {
    left: 0;
    transform: none;
  }

  .history-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding-left: 28px;
  }

  .history-item::after {
    left: 0;
    transform: none;
  }

  .history-year {
    text-align: left;
    font-size: 1.2rem;
  }

  .history-content {
    padding-left: 0;
  }

  .about-values {
    grid-template-columns: 1fr;
  }

  /* 联系我们 */
  .contact-section {
    padding: 60px 0;
  }

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

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

  .solution-hero {
    padding: 110px 0 60px;
  }

  .solution-hero-title {
    font-size: 1.9rem;
  }

  .solution-hero-visual,
  .solution-split-img {
    min-height: 230px;
  }

  .solution-section,
  .solution-cta {
    padding: 60px 0;
  }

  .solution-card-grid,
  .solution-feature-grid,
  .scenario-grid,
  .process-card-grid,
  .deliver-grid,
  .implementation-grid {
    grid-template-columns: 1fr;
  }

  .service-actions {
    flex-direction: column;
  }

  .wechat-modal {
    padding: 16px;
  }

  .wechat-modal-head,
  .wechat-modal-body {
    padding: 24px 20px;
  }

  .wechat-modal-actions {
    grid-template-columns: 1fr;
  }

  .wechat-number {
    font-size: 1.65rem;
  }
}

/* ----- 小屏手机：<= 480px ----- */
@media (max-width: 480px) {
  .hero-title {
    font-size: 1.6rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

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

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

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

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

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

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

  .result-num {
    font-size: 2rem;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }
}