/* ===== 平板 ===== */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.5rem; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .download-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-links { gap: 40px; }
}

/* ===== 手机 ===== */
@media (max-width: 768px) {
  /* 导航栏 */
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg-card); padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    gap: 12px;
    z-index: 99;
  }
  .nav-links.open a {
    padding: 8px 0;
    font-size: 1rem;
  }
  .mobile-menu { display: block; }

  /* Hero区域 */
  .hero { padding: 100px 0 60px; min-height: auto; }
  .hero-content { grid-template-columns: 1fr; gap: 32px; text-align: center; }
  .hero h1 { font-size: 2rem; }
  .hero-buttons { justify-content: center; flex-wrap: wrap; }
  .hero-desc br { display: none; }

  /* 终端窗口 */
  .term-window, .showcase-window { border-radius: 8px; }
  .term-body {
    padding: 14px;
    font-size: 0.75rem;
    min-height: 160px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .term-body .term-line {
    white-space: nowrap;
  }

  /* 区块间距 */
  .features, .showcase, .tech, .download { padding: 60px 0; }
  .section-title { font-size: 1.5rem; }
  .section-desc { font-size: 0.9rem; margin-bottom: 32px; }

  /* 功能网格 */
  .feature-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .feature-card { padding: 20px 16px; }
  .feature-card h3 { font-size: 0.95rem; }
  .feature-card p { font-size: 0.8rem; }

  /* 展示区 */
  .showcase-tabs { flex-wrap: wrap; gap: 6px; }
  .tab-btn { padding: 6px 14px; font-size: 0.85rem; }
  .showcase-body { min-height: 240px; }
  .mock-sidebar { display: none; }
  .mock-tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .mock-tab { white-space: nowrap; font-size: 0.75rem; padding: 8px 12px; }
  .mock-term-content {
    padding: 12px;
    font-size: 0.7rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .mock-term-content p { white-space: nowrap; }

  /* 技术架构 */
  .tech-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .tech-card { padding: 24px 16px; }
  .tech-name { font-size: 1.1rem; }
  .tech-desc { font-size: 0.8rem; }

  /* 下载卡片 */
  .download-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .download-card { padding: 20px 14px; gap: 8px; }
  .download-card svg { width: 32px; height: 32px; }
  .dl-platform { font-size: 0.95rem; }
  .dl-info { font-size: 0.75rem; }
  .dl-btn { padding: 6px 16px; font-size: 0.8rem; }

  /* 页脚 */
  .footer { padding: 40px 0 0; }
  .footer-content { flex-direction: column; gap: 24px; }
  .footer-links { gap: 32px; }
  .footer-bottom { margin-top: 24px; padding: 16px 0; }
  .footer-bottom p { margin: 4px 0; }
  .footer-bottom a { font-size: 0.8rem; }

  /* ===== 子页面通用 ===== */
  main { padding-top: 80px !important; }
  main .container {
    padding: 0 16px;
  }
  main h1.section-title {
    font-size: 1.4rem;
  }

  /* 下载页面网格（子页面） */
  .download-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* 文档页面代码块 */
  .doc-content pre,
  pre {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 0.75rem;
    white-space: pre;
    max-width: 100%;
  }

  /* FAQ 区域 */
  .faq-q { font-size: 0.9rem; padding: 12px 0; }
  .faq-a { font-size: 0.85rem; }
}

/* ===== 小屏手机 ===== */
@media (max-width: 480px) {
  .container { padding: 0 14px; }

  .hero h1 { font-size: 1.6rem; }
  .hero-desc { font-size: 0.9rem; }
  .btn { padding: 10px 20px; font-size: 0.85rem; }

  .feature-grid { grid-template-columns: 1fr; gap: 10px; }
  .feature-card { padding: 16px 14px; }
  .feature-icon { width: 40px; height: 40px; margin-bottom: 12px; }
  .feature-icon svg { width: 24px; height: 24px; }

  .tech-grid { grid-template-columns: 1fr; gap: 10px; }
  .tech-card { padding: 20px 14px; }

  .download-grid { grid-template-columns: 1fr; gap: 10px; }
  .download-card { flex-direction: row; padding: 16px; gap: 14px; }
  .download-card svg { width: 28px; height: 28px; flex-shrink: 0; }
  .dl-platform { font-size: 0.9rem; }
  .dl-btn { padding: 5px 12px; font-size: 0.75rem; }

  .footer-links { flex-direction: column; gap: 20px; }

  /* 子页面正文 */
  main .container {
    padding: 0 12px;
  }
  main h1.section-title {
    font-size: 1.25rem;
  }

  /* 关于页面卡片 */
  main .container > div[style*="padding: 32px"] {
    padding: 20px !important;
  }
}