/**
 * 响应式断点：1440 桌面 / 平板 / 390 移动端
 * 重点：消除手机端横向溢出，内容限制在 100vw 内
 */

@media (max-width: 1200px) {
  .ai-mini-cards { grid-template-columns: repeat(3, 1fr); }
  .charts-row { grid-template-columns: 1fr; }
}

@media (max-width: 992px) {
  .main-nav { display: none; }
  .menu-toggle { display: flex; }
  .portal-mainnav { display: none; }
  .portal-header .menu-toggle { display: flex !important; }
  .hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .ai-mini-cards { grid-template-columns: repeat(3, 1fr); }
  .index-card { min-width: 160px; }
  .index-cards-track { padding: 0 16px 16px; }
}

@media (max-width: 768px) {
  .container { padding: 0 12px; }

  .header-inner {
    height: 52px;
    gap: 8px;
  }

  .site-logo { font-size: 1.15rem; }

  .site-partner-logos {
    gap: 6px;
    padding-left: 8px;
  }

  .partner-logo {
    height: 22px;
    max-width: 72px;
  }

  .header-actions { gap: 4px; }

  .header-actions .icon-btn {
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
  }

  .lang-toggle {
    font-size: 0.78rem;
    padding: 4px 6px;
  }

  .hero-section { padding: 16px 0 28px; }

  .hero-left h1 {
    font-size: 1.4rem;
    word-break: break-word;
  }

  .hero-left .subtitle {
    font-size: 0.88rem;
  }

  .hero-btns {
    flex-direction: column;
    gap: 10px;
  }

  .hero-btns .btn {
    width: 100%;
    min-width: 0;
    padding: 10px 16px;
    font-size: 0.85rem;
  }

  .data-overview-box {
    padding: 16px;
  }

  .video-news-block {
    padding: 14px;
    margin-bottom: 14px;
  }

  .video-card .v-title {
    font-size: 0.78rem;
  }

  .ai-mini-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .ai-mini-card .name { font-size: 0.68rem; }
  .ai-mini-card .score { font-size: 0.95rem; }

  .quick-links {
    flex-wrap: wrap;
    overflow-x: visible;
    gap: 8px;
  }

  .quick-link-pill {
    flex: 1 1 calc(50% - 4px);
    min-width: 0;
    white-space: normal;
    text-align: center;
    padding: 8px 10px;
    font-size: 0.78rem;
  }

  .enterprise-grid {
    grid-template-columns: 1fr;
    max-height: 280px;
  }

  .reports-grid,
  .jobs-list {
    grid-template-columns: 1fr;
  }

  .hot-ai-bar { padding: 10px 0; }

  .hot-ai-bar .container { padding: 0 12px; }

  .hot-ai-label {
    font-size: 0.68rem;
    padding: 6px 8px;
    margin-right: 8px;
    max-width: 42%;
    line-height: 1.3;
    white-space: normal;
  }

  .hot-ai-item {
    font-size: 0.78rem;
    gap: 4px;
  }

  .hot-ai-item .hot-ai-name {
    max-width: 7em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .hot-ai-scroll { gap: 16px; }

  .index-card {
    min-width: 130px;
    padding: 10px 12px;
  }

  .index-card .label { font-size: 0.7rem; }
  .index-card .value { font-size: 1.15rem; }

  .index-cards-track {
    gap: 10px;
    padding: 0 12px 12px;
  }

  .news-ticker-item {
    padding: 0 16px;
    font-size: 0.78rem;
  }

  .content-section { padding: 24px 0; }

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

  .latest-featured-body { padding: 16px; }

  .latest-featured-title { font-size: 0.95rem; }

  .latest-featured-summary { font-size: 0.82rem; -webkit-line-clamp: 2; }

  .latest-news-list { padding: 4px 12px; }

  .latest-news-item .item-date {
    min-width: 58px;
    font-size: 0.68rem;
  }

  .latest-news-item .item-title { font-size: 0.82rem; }

  .latest-news-list:not(.hot-rec-list) .latest-news-item .item-summary { display: none; }

  .section-title {
    font-size: 1.05rem;
    flex-direction: column;
    align-items: flex-start;
  }

  .section-title .view-toggle {
    margin-left: 0;
    width: 100%;
  }

  .section-title .view-toggle button {
    flex: 1;
    text-align: center;
  }

  .chart-container { height: 220px; }

  .chart-box { padding: 12px; }

  .ai-rank-card { width: 150px; padding: 14px; }

  .ai-list-table th,
  .ai-list-table td {
    padding: 10px 8px;
    font-size: 0.8rem;
  }

  .report-card,
  .job-card,
  .expo-item { padding: 14px; }

  .expo-item:hover { transform: none; }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .scheme-switcher {
    flex-wrap: wrap;
    justify-content: center;
  }

  .mobile-bottom-nav { display: block; }

  .back-to-top {
    right: 14px;
    bottom: calc(68px + env(safe-area-inset-bottom));
    width: 40px;
    height: 40px;
    font-size: 0.9rem;
  }

  body { padding-bottom: 56px; }
}

@media (max-width: 390px) {
  .container { padding: 0 10px; }

  .site-logo { font-size: 1rem; }

  .header-actions .lang-toggle { display: none; }

  .index-card {
    min-width: 118px;
    padding: 8px 10px;
  }

  .hero-left h1 { font-size: 1.25rem; }

  .ai-mini-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  .ai-mini-card { padding: 8px 4px; }

  .quick-link-pill {
    flex: 1 1 100%;
    font-size: 0.75rem;
  }

  .hot-ai-label {
    font-size: 0.62rem;
    padding: 5px 6px;
    max-width: 38%;
  }

  .video-action-btns {
    flex-direction: column;
    gap: 8px;
  }

  .video-action-btns .video-action-btn {
    width: 100%;
  }

  .btn { padding: 10px 16px; }

  .chart-container { height: 200px; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
}