/* ==========================================================================
   思科泰智建站 skiltechurl.com - 响应式样式表
   适配电脑、平板、手机
   ========================================================================== */

/* ---------- 大屏（1200px 以下） ---------- */
@media (max-width: 1200px) {
  .container { padding: 0 24px; }
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }
  .footer-col:last-child {
    grid-column: 1 / -1;
  }
  .advantage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .honor-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .partner-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---------- 平板横屏（992px 以下） ---------- */
@media (max-width: 992px) {
  .section { padding: 70px 0; }

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

  /* Hero */
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-shelf {
    height: 380px;
    max-width: 500px;
    margin: 0 auto;
  }
  .hero-stats {
    gap: 24px;
  }

  /* 网格 */
  .service-grid,
  .case-grid,
  .news-quilt,
  .news-list-layout,
  .doc-grid,
  .download-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .value-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-8px);
  }

  /* 流程时间线 */
  .process-timeline {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }
  .process-timeline::before { display: none; }

  /* 统计带 */
  .stats-band {
    grid-template-columns: repeat(2, 1fr);
    padding: 40px 32px;
  }

  /* 关于 */
  .about-grid,
  .service-detail-hero,
  .sd-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .sd-grid.reverse .sd-text { order: 1; }
  .sd-grid.reverse .sd-image { order: 2; }
  .about-img-wrap img { height: 380px; }
  .sdh-image img { height: 320px; }
  .sd-image img { height: 300px; }

  /* 解决方案 */
  .solution-grid {
    grid-template-columns: 1fr;
  }

  /* 资讯详情 */
  .news-detail-layout {
    grid-template-columns: 1fr;
  }
  .news-sidebar {
    position: static;
  }

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

  /* CTA */
  .cta-band {
    flex-direction: column;
    text-align: center;
    padding: 40px 32px;
  }

  /* 网站地图 */
  .sitemap-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

/* ---------- 平板竖屏（768px 以下） ---------- */
@media (max-width: 768px) {
  :root { --header-height: 64px; }

  .section { padding: 56px 0; }
  .section-tight { padding: 40px 0; }
  .container { padding: 0 20px; }

  h1 { font-size: clamp(1.8rem, 6vw, 2.4rem); }
  h2 { font-size: clamp(1.4rem, 4.5vw, 1.8rem); }

  /* Hero */
  .hero-home {
    padding: calc(var(--header-height) + 40px) 0 60px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-stats {
    flex-wrap: wrap;
    gap: 20px;
  }
  .hero-stat {
    flex: 1;
    min-width: 100px;
  }
  .hero-stat .num { font-size: 1.8rem; }
  .hero-shelf { height: 300px; }

  /* 网格 */
  .service-grid,
  .case-grid,
  .news-quilt,
  .news-list-layout,
  .doc-grid,
  .download-grid,
  .team-grid,
  .honor-grid,
  .job-grid {
    grid-template-columns: 1fr;
  }

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

  /* 流程 */
  .process-timeline {
    grid-template-columns: 1fr;
    gap: 28px;
    max-width: 320px;
    margin: 0 auto;
  }

  /* 统计带 */
  .stats-band {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 32px 24px;
    border-radius: var(--radius-lg);
  }
  .stat-num { font-size: 2rem; }

  /* 解决方案卡片 */
  .solution-card {
    grid-template-columns: 1fr;
  }
  .solution-img {
    aspect-ratio: 16/9;
  }

  /* 关于 */
  .about-features {
    grid-template-columns: 1fr;
  }
  .about-img-wrap img { height: 280px; }

  /* 页脚 */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  /* 联系表单 */
  .contact-info,
  .contact-form {
    padding: 28px 24px;
  }

  /* 资讯文章 */
  .news-article {
    padding: 28px 24px;
  }

  /* 法律内容 */
  .legal-content {
    padding: 28px 24px;
  }

  /* 网站地图 */
  .sitemap-grid {
    grid-template-columns: 1fr;
  }

  /* 合作伙伴 */
  .partner-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 筛选栏 */
  .news-filter-bar {
    gap: 8px;
  }
  .filter-chip {
    padding: 6px 14px;
    font-size: 0.82rem;
  }

  /* 返回顶部 */
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }

  /* 品牌文字 */
  .brand-text { font-size: 1rem; }
  .brand-text small { display: none; }
  .brand img { width: 36px; height: 36px; }
}

/* ---------- 手机（480px 以下） ---------- */
@media (max-width: 480px) {
  .container { padding: 0 16px; }

  .hero-shelf { height: 240px; }
  .shelf-plate {
    padding: 10px 16px;
    bottom: 12px;
    right: 12px;
  }
  .shelf-plate strong { font-size: 0.95rem; }
  .shelf-plate small { font-size: 0.7rem; }

  .stats-band {
    grid-template-columns: 1fr;
  }

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

  .btn-lg { padding: 14px 28px; font-size: 0.98rem; }

  .section-head { margin-bottom: 36px; }

  .mobile-drawer { width: 280px; right: -280px; }
}

/* ---------- 超小屏（360px 以下） ---------- */
@media (max-width: 360px) {
  .hero-stat .num { font-size: 1.5rem; }
  .stat-num { font-size: 1.6rem; }
}

/* ---------- 打印样式 ---------- */
@media print {
  .site-header,
  .mobile-drawer,
  .overlay,
  .back-to-top,
  .nav-cta,
  .footer-social {
    display: none !important;
  }
  body { background: #fff; color: #000; }
  .section { padding: 20px 0; }
  a { color: #000; text-decoration: underline; }
}