/*********************************************
 * 响应式布局 - 武汉钜阳智慧能源 CMS
 *********************************************/

/* 平板: 768px - 1024px */
@media (max-width: 1024px) {
    .business-grid { grid-template-columns: repeat(2, 1fr); }
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .about-grid { grid-template-columns: 1fr; gap: 30px; }
    .culture-cards { grid-template-columns: repeat(2, 1fr); }
    .product-card-full { grid-template-columns: 1fr; }
    .product-img-full { height: 220px; }
    .news-page-layout { grid-template-columns: 1fr; }
    .news-detail-layout { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .hero-text h1 { font-size: 36px; }
    .hero-text p { font-size: 15px; }
    .hero-stats { gap: 20px; }
    .stat-number { font-size: 28px; }
    .timeline::before { left: 20px; }
    .timeline-item:nth-child(odd) { padding-right: 0; padding-left: 50px; }
    .timeline-item:nth-child(even) { padding-left: 50px; }
    .timeline-dot { left: 20px; }
    .timeline-date { left: 20px; transform: translateX(0); }
}

/* 手机: < 768px */
@media (max-width: 768px) {
    .container { padding: 0 15px; }
    .site-header .container { height: 56px; }
    .logo-text { font-size: 16px; }
    .logo-icon { font-size: 24px; margin-right: 6px; }

    /* 移动端导航 */
    .main-nav { display: none; position: absolute; top: 56px; left: 0; right: 0; background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.1); z-index: 100; }
    .main-nav.mobile-open { display: block; }
    .main-nav ul { flex-direction: column; padding: 10px 0; }
    .main-nav ul li > a { padding: 12px 20px; }
    .dropdown-menu { position: static; box-shadow: none; padding-left: 20px; }
    .mobile-toggle { display: flex; }

    .hero-slider { min-height: 70vh; }
    .hero-text h1 { font-size: 28px; }
    .hero-text p { font-size: 14px; }
    .hero-btns { flex-direction: column; }
    .hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
    .hero-wave svg { height: 30px; }

    .page-banner { padding: 50px 0 80px; }
    .page-banner h1 { font-size: 24px; }

    .section { padding: 40px 0; }
    .section-header h2 { font-size: 24px; }

    .business-grid { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .case-grid { grid-template-columns: 1fr; }
    .culture-cards { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }

    .business-detail-card { flex-direction: column; padding: 24px; }
    .business-detail-card.alt { flex-direction: column; }
    .bd-services { grid-template-columns: 1fr; }

    .product-card-full { grid-template-columns: 1fr; padding: 20px; }
    .product-img-full { height: 180px; }

    .news-list-item { flex-direction: column; }
    .nli-image { width: 100%; height: 180px; }

    .contact-form-box { padding: 24px; }
    .form-row { grid-template-columns: 1fr; }
    .form-row-2 { grid-template-columns: 1fr; }

    .float-consult { right: 10px; bottom: 60px; }
    .consult-btn { width: 44px; height: 44px; font-size: 18px; }
    .consult-btn span { display: none; }

    .ci-item { flex-direction: column; gap: 8px; }
}

/* 小屏手机: < 480px */
@media (max-width: 480px) {
    .hero-text h1 { font-size: 22px; }
    .hero-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
    .stat-number { font-size: 24px; }
    .btn { padding: 8px 18px; font-size: 14px; }
    .top-bar { display: none; }
}