/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif; background: #0f0f1a; color: #e0e0e0; line-height: 1.6; min-height: 100vh; transition: background 0.3s, color 0.3s; }
a { color: #ff6b35; text-decoration: none; transition: color 0.2s; }
a:hover { color: #ff8c5a; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
input, textarea { font: inherit; color: inherit; }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* Section */
.section { padding: 5rem 0; opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.section.visible { opacity: 1; transform: translateY(0); }
.section-title { font-size: 2.2rem; font-weight: 700; text-align: center; margin-bottom: 3rem; background: linear-gradient(135deg, #ff6b35, #ffcc00); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; position: relative; }
.section-title::after { content: ''; display: block; width: 80px; height: 4px; background: linear-gradient(90deg, #ff6b35, #ffcc00); margin: 1rem auto 0; border-radius: 2px; }
.bg-light { background: rgba(255,255,255,0.03); }

/* Header & Nav */
header { position: sticky; top: 0; z-index: 1000; background: rgba(15,15,26,0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid rgba(255,107,53,0.15); }
.nav-container { display: flex; align-items: center; justify-content: space-between; max-width: 1200px; margin: 0 auto; padding: 0.8rem 1.5rem; }
.logo a { display: flex; align-items: center; }
.nav-menu { display: flex; gap: 1.5rem; }
.nav-menu li a { padding: 0.5rem 0; font-size: 0.95rem; font-weight: 500; color: #c0c0d0; position: relative; transition: color 0.2s; }
.nav-menu li a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: #ff6b35; transition: width 0.3s; }
.nav-menu li a:hover, .nav-menu li a.active { color: #ff6b35; }
.nav-menu li a:hover::after, .nav-menu li a.active::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 0.8rem; }
.search-box { display: flex; align-items: center; background: rgba(255,255,255,0.06); border-radius: 2rem; padding: 0.2rem 0.2rem 0.2rem 1rem; border: 1px solid rgba(255,255,255,0.08); transition: border-color 0.3s; }
.search-box:focus-within { border-color: #ff6b35; }
.search-box input { background: none; border: none; outline: none; color: #e0e0e0; font-size: 0.9rem; width: 140px; padding: 0.4rem 0; }
.search-box input::placeholder { color: #666; }
.search-box button { background: #ff6b35; color: #fff; border-radius: 2rem; padding: 0.4rem 0.8rem; font-size: 0.85rem; transition: background 0.2s; }
.search-box button:hover { background: #e55a2b; }
#darkModeToggle { font-size: 1.3rem; padding: 0.3rem; border-radius: 50%; transition: background 0.2s; }
#darkModeToggle:hover { background: rgba(255,255,255,0.1); }
.mobile-menu-toggle { display: none; font-size: 1.5rem; padding: 0.3rem; }

/* Breadcrumb */
.breadcrumb { max-width: 1200px; margin: 0 auto; padding: 0.5rem 1.5rem; font-size: 0.8rem; color: #888; white-space: nowrap; overflow-x: auto; scrollbar-width: none; }
.breadcrumb::-webkit-scrollbar { display: none; }
.breadcrumb a { color: #aaa; }
.breadcrumb a:hover { color: #ff6b35; }

/* Hero Banner */
.hero-banner { position: relative; overflow: hidden; height: 70vh; min-height: 400px; max-height: 600px; }
.banner-slider { position: relative; width: 100%; height: 100%; }
.slide { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; transition: opacity 1s ease; }
.slide.active { opacity: 1; }
.banner-img { width: 100%; height: 100%; object-fit: cover; }
.banner-content { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; color: #fff; width: 90%; max-width: 800px; z-index: 2; text-shadow: 0 2px 20px rgba(0,0,0,0.5); }
.banner-content h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 1rem; line-height: 1.2; background: linear-gradient(135deg, #fff, #ffcc00); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.banner-content h2 { font-size: 2.4rem; font-weight: 700; margin-bottom: 1rem; color: #fff; }
.banner-content p { font-size: 1.1rem; margin-bottom: 2rem; opacity: 0.9; max-width: 600px; margin-left: auto; margin-right: auto; }
.btn-primary { display: inline-block; padding: 0.9rem 2.5rem; background: linear-gradient(135deg, #ff6b35, #e63946); color: #fff; border-radius: 3rem; font-weight: 600; font-size: 1.05rem; transition: transform 0.3s, box-shadow 0.3s; box-shadow: 0 4px 20px rgba(255,107,53,0.3); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(255,107,53,0.5); color: #fff; }
.banner-controls { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); display: flex; gap: 0.8rem; z-index: 3; }
.dot { width: 14px; height: 14px; border-radius: 50%; background: rgba(255,255,255,0.3); cursor: pointer; transition: background 0.3s, transform 0.3s; }
.dot.active { background: #ff6b35; transform: scale(1.2); }

/* Brand */
.brand-content { display: flex; gap: 3rem; align-items: center; flex-wrap: wrap; }
.brand-img { width: 100%; max-width: 400px; border-radius: 1.5rem; box-shadow: 0 10px 40px rgba(0,0,0,0.3); transition: transform 0.4s; }
.brand-img:hover { transform: scale(1.02); }
.brand-text { flex: 1; min-width: 280px; }
.brand-text p { margin-bottom: 1.2rem; font-size: 1.05rem; color: #c0c0d0; line-height: 1.8; }

/* Culture Grid */
.culture-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; }
.culture-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 2rem 1.5rem; text-align: center; transition: transform 0.3s, box-shadow 0.3s; }
.culture-card:hover { transform: translateY(-8px); box-shadow: 0 12px 40px rgba(255,107,53,0.15); }
.culture-card img { width: 80px; height: 80px; margin: 0 auto 1rem; border-radius: 50%; }
.culture-card h3 { font-size: 1.3rem; margin-bottom: 0.8rem; color: #fff; }
.culture-card p { font-size: 0.95rem; color: #aaa; }

/* Team Grid */
.team-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 2rem; }
.team-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 2rem 1.5rem; text-align: center; transition: transform 0.3s; }
.team-card:hover { transform: translateY(-5px); }
.team-card img { width: 100px; height: 100px; margin: 0 auto 1rem; border-radius: 50%; }
.team-card h3 { font-size: 1.2rem; color: #fff; }
.team-card .role { color: #ff6b35; font-weight: 600; margin: 0.3rem 0 0.8rem; font-size: 0.9rem; }
.team-card p { font-size: 0.95rem; color: #aaa; }

/* Products Grid */
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.product-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 1.5rem; text-align: center; transition: transform 0.3s, box-shadow 0.3s; overflow: hidden; }
.product-card:hover { transform: translateY(-6px); box-shadow: 0 10px 30px rgba(255,107,53,0.1); }
.product-card img { border-radius: 1rem; margin-bottom: 1.2rem; width: 100%; }
.product-card h3 { font-size: 1.3rem; margin-bottom: 0.8rem; color: #fff; }
.product-card p { font-size: 0.95rem; color: #aaa; }

/* Advantages Grid */
.advantages-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
.advantage-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 2rem 1.5rem; text-align: center; transition: transform 0.3s; }
.advantage-card:hover { transform: translateY(-5px); }
.advantage-card img { width: 70px; height: 70px; margin: 0 auto 1rem; }
.advantage-card h3 { font-size: 1.2rem; margin-bottom: 0.8rem; color: #fff; }
.advantage-card p { font-size: 0.95rem; color: #aaa; }

/* Service Grid */
.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; }
.service-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 1.5rem; text-align: center; transition: transform 0.3s; }
.service-card:hover { transform: translateY(-5px); }
.service-card img { border-radius: 1rem; margin-bottom: 1rem; width: 100%; }
.service-card h3 { font-size: 1.2rem; margin-bottom: 0.8rem; color: #fff; }
.service-card p { font-size: 0.95rem; color: #aaa; }

/* Core Advantages Grid */
.core-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; }
.core-item { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 2rem 1.5rem; text-align: center; transition: transform 0.3s; }
.core-item:hover { transform: translateY(-5px); }
.core-item img { width: 70px; height: 70px; margin: 0 auto 1rem; }
.core-item h3 { font-size: 1.2rem; margin-bottom: 0.8rem; color: #fff; }
.core-item p { font-size: 0.95rem; color: #aaa; }

/* Solutions Grid */
.solutions-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; }
.solution-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 1.5rem; text-align: center; transition: transform 0.3s; }
.solution-card:hover { transform: translateY(-5px); }
.solution-card img { border-radius: 1rem; margin-bottom: 1rem; width: 100%; }
.solution-card h3 { font-size: 1.2rem; margin-bottom: 0.8rem; color: #fff; }
.solution-card p { font-size: 0.95rem; color: #aaa; }

/* Industries Grid */
.industries-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 2rem; }
.industry-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 1.5rem; text-align: center; transition: transform 0.3s; }
.industry-card:hover { transform: translateY(-5px); }
.industry-card img { border-radius: 1rem; margin-bottom: 1rem; width: 100%; }
.industry-card h3 { font-size: 1.1rem; margin-bottom: 0.6rem; color: #fff; }
.industry-card p { font-size: 0.9rem; color: #aaa; }

/* Cases Grid */
.cases-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 2rem; }
.case-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 1.5rem; text-align: center; transition: transform 0.3s; }
.case-card:hover { transform: translateY(-5px); }
.case-card img { border-radius: 1rem; margin-bottom: 1rem; width: 100%; }
.case-card h3 { font-size: 1.2rem; margin-bottom: 0.8rem; color: #fff; }
.case-card p { font-size: 0.95rem; color: #aaa; }

/* Testimonials Grid */
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 2rem; }
.testimonial-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 2rem 1.5rem; text-align: center; transition: transform 0.3s; }
.testimonial-card:hover { transform: translateY(-5px); }
.testimonial-card img { width: 60px; height: 60px; margin: 0 auto 1rem; }
.testimonial-card p { font-size: 1rem; color: #ccc; font-style: italic; margin-bottom: 1rem; }
.testimonial-card .reviewer { font-size: 0.9rem; color: #ff6b35; font-style: normal; font-weight: 600; }

/* News Grid */
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.news-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 1.5rem; transition: transform 0.3s; }
.news-card:hover { transform: translateY(-5px); }
.news-card img { border-radius: 1rem; margin-bottom: 1rem; width: 100%; }
.news-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; color: #fff; line-height: 1.4; }
.news-card .date { font-size: 0.85rem; color: #888; margin-bottom: 0.8rem; }
.news-card p { font-size: 0.95rem; color: #aaa; margin-bottom: 1rem; }
.read-more { color: #ff6b35; font-weight: 600; font-size: 0.9rem; }
.read-more:hover { color: #ff8c5a; }

/* Articles Grid */
.articles-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.article-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 1.5rem; transition: transform 0.3s; }
.article-card:hover { transform: translateY(-5px); }
.article-card img { border-radius: 1rem; margin-bottom: 1rem; width: 100%; }
.article-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; color: #fff; }
.article-card .date { font-size: 0.85rem; color: #888; margin-bottom: 0.8rem; }
.article-card p { font-size: 0.95rem; color: #aaa; margin-bottom: 1rem; }

/* Recommend Grid */
.recommend-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; }
.recommend-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 1.5rem; text-align: center; transition: transform 0.3s; }
.recommend-card:hover { transform: translateY(-5px); }
.recommend-card img { border-radius: 1rem; margin-bottom: 1rem; width: 100%; }
.recommend-card h3 { font-size: 1.1rem; margin-bottom: 0.6rem; color: #fff; }
.recommend-card p { font-size: 0.9rem; color: #aaa; }

/* Related Grid */
.related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; }
.related-card { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 1.5rem; text-align: center; transition: transform 0.3s; }
.related-card:hover { transform: translateY(-5px); }
.related-card img { border-radius: 1rem; margin-bottom: 1rem; width: 100%; }
.related-card h3 { font-size: 1.1rem; margin-bottom: 0.6rem; color: #fff; }
.related-card p { font-size: 0.9rem; color: #aaa; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1rem; margin-bottom: 1rem; overflow: hidden; transition: box-shadow 0.3s; }
.faq-item:hover { box-shadow: 0 4px 20px rgba(255,107,53,0.08); }
.faq-question { width: 100%; padding: 1.2rem 1.5rem; text-align: left; font-size: 1.05rem; font-weight: 600; color: #fff; background: none; display: flex; justify-content: space-between; align-items: center; transition: background 0.2s; }
.faq-question:hover { background: rgba(255,255,255,0.03); }
.faq-question::after { content: '+'; font-size: 1.3rem; color: #ff6b35; transition: transform 0.3s; }
.faq-item .faq-answer { display: none; padding: 0 1.5rem 1.2rem; color: #aaa; font-size: 0.95rem; line-height: 1.7; }
.faq-item .faq-answer p { margin-bottom: 0.5rem; }

/* HowTo */
.howto-content { max-width: 800px; margin: 0 auto; background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 2rem; }
.howto-content h3 { font-size: 1.2rem; color: #ff6b35; margin-top: 1.5rem; margin-bottom: 0.8rem; }
.howto-content h3:first-child { margin-top: 0; }
.howto-content p { color: #c0c0d0; margin-bottom: 0.8rem; line-height: 1.7; }
.howto-content ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.howto-content ol li { color: #c0c0d0; margin-bottom: 0.5rem; line-height: 1.7; list-style: decimal; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
.contact-info { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 2rem; }
.contact-info img { border-radius: 1rem; margin-bottom: 1.5rem; width: 100%; max-width: 300px; }
.contact-info p { margin-bottom: 0.6rem; font-size: 0.95rem; color: #c0c0d0; }
.contact-info p strong { color: #fff; }
.contact-form { background: rgba(255,255,255,0.04); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: 1.5rem; padding: 2rem; }
.contact-form label { display: block; margin-bottom: 0.4rem; font-weight: 500; color: #ccc; font-size: 0.95rem; }
.contact-form input, .contact-form textarea { width: 100%; padding: 0.8rem 1rem; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); border-radius: 0.8rem; color: #e0e0e0; margin-bottom: 1.2rem; transition: border-color 0.3s; }
.contact-form input:focus, .contact-form textarea:focus { border-color: #ff6b35; outline: none; }
.contact-form textarea { min-height: 120px; resize: vertical; }
.contact-form button { padding: 0.9rem 2.5rem; background: linear-gradient(135deg, #ff6b35, #e63946); color: #fff; border-radius: 3rem; font-weight: 600; font-size: 1rem; transition: transform 0.3s, box-shadow 0.3s; box-shadow: 0 4px 20px rgba(255,107,53,0.3); }
.contact-form button:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(255,107,53,0.5); }

/* Footer */
footer { background: rgba(0,0,0,0.4); border-top: 1px solid rgba(255,255,255,0.05); padding: 4rem 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
.footer-col h3 { font-size: 1.1rem; color: #fff; margin-bottom: 1.2rem; position: relative; padding-bottom: 0.5rem; }
.footer-col h3::after { content: ''; position: absolute; bottom: 0; left: 0; width: 40px; height: 2px; background: #ff6b35; }
.footer-col p { font-size: 0.9rem; color: #888; margin-bottom: 0.5rem; line-height: 1.6; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul li a { font-size: 0.9rem; color: #888; transition: color 0.2s; }
.footer-col ul li a:hover { color: #ff6b35; }
.qr-code { width: 100px; height: 100px; border-radius: 0.8rem; margin-bottom: 0.8rem; display: inline-block; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding: 1.5rem 0; text-align: center; font-size: 0.85rem; color: #666; }
.footer-bottom p { margin-bottom: 0.3rem; }

/* Back to Top */
#backToTop { position: fixed; bottom: 2rem; right: 2rem; width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, #ff6b35, #e63946); color: #fff; font-size: 1.4rem; box-shadow: 0 4px 20px rgba(255,107,53,0.3); z-index: 999; display: none; transition: transform 0.3s, opacity 0.3s; }
#backToTop:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(255,107,53,0.5); }

/* Dark Mode */
body.dark-mode { background: #0a0a14; color: #d0d0e0; }
body.dark-mode header { background: rgba(10,10,20,0.9); }
body.dark-mode .bg-light { background: rgba(255,255,255,0.02); }
body.dark-mode .culture-card, body.dark-mode .team-card, body.dark-mode .product-card, body.dark-mode .advantage-card, body.dark-mode .service-card, body.dark-mode .core-item, body.dark-mode .solution-card, body.dark-mode .industry-card, body.dark-mode .case-card, body.dark-mode .testimonial-card, body.dark-mode .news-card, body.dark-mode .article-card, body.dark-mode .recommend-card, body.dark-mode .related-card, body.dark-mode .faq-item, body.dark-mode .howto-content, body.dark-mode .contact-info, body.dark-mode .contact-form { background: rgba(255,255,255,0.02); border-color: rgba(255,255,255,0.04); }

/* Responsive */
@media (max-width: 992px) {
  .nav-menu { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: rgba(15,15,26,0.95); backdrop-filter: blur(20px); padding: 1rem 1.5rem; border-bottom: 1px solid rgba(255,107,53,0.15); }
  .nav-menu.active { display: flex; }
  .mobile-menu-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .banner-content h1 { font-size: 2rem; }
  .banner-content h2 { font-size: 1.8rem; }
  .hero-banner { height: 50vh; min-height: 300px; }
  .brand-content { flex-direction: column; text-align: center; }
  .brand-img { max-width: 300px; }
}

@media (max-width: 768px) {
  .section { padding: 3rem 0; }
  .section-title { font-size: 1.8rem; }
  .nav-container { padding: 0.6rem 1rem; }
  .search-box input { width: 100px; }
  .breadcrumb { padding: 0.3rem 1rem; font-size: 0.75rem; }
  .banner-content h1 { font-size: 1.6rem; }
  .banner-content h2 { font-size: 1.4rem; }
  .banner-content p { font-size: 0.95rem; }
  .btn-primary { padding: 0.7rem 1.8rem; font-size: 0.95rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .culture-grid, .team-grid, .products-grid, .advantages-grid, .service-grid, .core-grid, .solutions-grid, .industries-grid, .cases-grid, .testimonials-grid, .news-grid, .articles-grid, .recommend-grid, .related-grid { grid-template-columns: 1fr; }
  .howto-content { padding: 1.5rem; }
  .contact-info, .contact-form { padding: 1.5rem; }
}

@media (max-width: 480px) {
  html { font-size: 14px; }
  .hero-banner { height: 40vh; min-height: 250px; }
  .banner-content h1 { font-size: 1.4rem; }
  .banner-content h2 { font-size: 1.2rem; }
  .nav-actions { gap: 0.4rem; }
  .search-box input { width: 80px; }
  #darkModeToggle { font-size: 1.1rem; }
}