/* ===== 响应式适配 ===== */

/* 平板端 */
@media (max-width: 1199px) {
  .hero-banner .container {
    flex-direction: column;
    text-align: center;
    gap: 40px;
  }

  .hero-content .meta-tags {
    justify-content: center;
  }

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

  .hero-image .avatar {
    width: 220px;
    height: 220px;
    font-size: 60px;
  }

  .hero-content h1 {
    font-size: 34px;
  }

  .about-intro {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .about-image {
    order: -1;
  }

  .about-image .avatar-lg {
    width: 240px;
    height: 240px;
    font-size: 64px;
  }

  .process-steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .process-steps .process-step:nth-child(4),
  .process-steps .process-step:nth-child(5) {
    margin-top: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

@media (max-width: 991px) {
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

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

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

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

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

  .page-hero h1 {
    font-size: 30px;
  }
}

/* 手机端 */
@media (max-width: 767px) {
  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--bg-white);
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
  }

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

  .menu-toggle {
    display: flex;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero-banner {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .hero-content h1 {
    font-size: 28px;
  }

  .hero-content .subtitle {
    font-size: 16px;
  }

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

  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
  }

  .hero-image .avatar {
    width: 180px;
    height: 180px;
    font-size: 48px;
  }

  .section {
    padding: 50px 0;
  }

  .section-header h2 {
    font-size: 24px;
  }

  .advantages-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .credentials {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .process-steps .process-step:nth-child(3),
  .process-steps .process-step:nth-child(4),
  .process-steps .process-step:nth-child(5) {
    margin-top: 0;
  }

  .training-formats {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .contact-form {
    padding: 24px;
  }

  .float-btn {
    bottom: 20px;
    right: 20px;
    padding: 12px 20px;
    font-size: 14px;
  }

  .page-hero {
    padding: 100px 0 40px;
  }

  .page-hero h1 {
    font-size: 26px;
  }

  .page-hero p {
    font-size: 15px;
  }

  .article-detail .article-header h1 {
    font-size: 22px;
  }

  .card {
    padding: 24px;
  }

  .tool-card {
    flex-direction: column;
  }

  .container {
    padding: 0 16px;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 24px;
  }

  .section-header h2 {
    font-size: 22px;
  }

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

  .process-steps {
    grid-template-columns: 1fr;
  }
}