/* ===== 武汉新凯恒晟科技有限公司 - 主样式表 ===== */
/* ===== www.wuhanqigan.com ===== */

/* ===== CSS Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif; color: #333; line-height: 1.8; background: #fff; overflow-x: hidden; }
a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-title { text-align: center; margin-bottom: 50px; }
.section-title h2 { font-size: 2rem; color: #1a3a6b; font-weight: 700; position: relative; display: inline-block; padding-bottom: 15px; }
.section-title h2::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 60px; height: 3px; background: linear-gradient(90deg, #d4a84b, #1a3a6b); }
.section-title p { color: #888; font-size: 0.95rem; margin-top: 10px; }
.section-bg { background: #f8f9fc; }

/* ===== Top Bar ===== */
.top-bar { background: #1a3a6b; color: #fff; font-size: 0.85rem; padding: 6px 0; }
.top-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.top-bar a { color: #fff; margin: 0 10px; }
.top-bar a:hover { color: #d4a84b; }
.top-bar .top-contact span { margin-right: 15px; }
.top-bar .top-contact i { margin-right: 5px; }
.top-bar .top-social a { display: inline-block; margin-left: 8px; font-size: 0.9rem; }

/* ===== Header / Nav ===== */
.header { background: #fff; box-shadow: 0 2px 15px rgba(0,0,0,0.08); position: sticky; top: 0; z-index: 1000; transition: all 0.3s ease; }
.header .container { display: flex; justify-content: space-between; align-items: center; padding: 0 20px; }
.logo { display: flex; align-items: center; padding: 10px 0; }
.logo img { height: 55px; width: auto; margin-right: 12px; }
.logo-text { display: flex; flex-direction: column; }
.logo-text h1 { font-size: 1.3rem; color: #1a3a6b; font-weight: 700; line-height: 1.3; }
.logo-text span { font-size: 0.75rem; color: #999; letter-spacing: 2px; }
.logo-text .tagline { font-size: 0.85rem; color: #d4a84b; font-weight: 700; letter-spacing: 1px; background: linear-gradient(135deg, #d4a84b, #f0c060); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; text-shadow: none; }

/* Navigation */
.nav { display: flex; align-items: center; }
.nav > li { position: relative; }
.nav > li > a { display: block; padding: 22px 18px; color: #333; font-size: 0.95rem; font-weight: 600; transition: all 0.3s; }
.nav > li > a:hover,
.nav > li.active > a { color: #1a3a6b; }
.nav > li > a::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 0; height: 3px; background: #d4a84b; transition: width 0.3s; }
.nav > li > a:hover::after,
.nav > li.active > a::after { width: 60%; }

/* Dropdown */
.dropdown-menu { position: absolute; top: 100%; left: 0; min-width: 200px; background: #fff; border-radius: 0 0 8px 8px; box-shadow: 0 10px 30px rgba(0,0,0,0.12); opacity: 0; visibility: hidden; transform: translateY(10px); transition: all 0.3s; z-index: 999; }
.nav > li:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu li a { display: block; padding: 10px 20px; color: #555; font-size: 0.9rem; border-bottom: 1px solid #f0f0f0; transition: all 0.2s; }
.dropdown-menu li:last-child a { border-bottom: none; }
.dropdown-menu li a:hover { background: #1a3a6b; color: #fff; padding-left: 28px; }

/* Mobile Menu Toggle */
.menu-toggle { display: none; flex-direction: column; cursor: pointer; padding: 10px; }
.menu-toggle span { display: block; width: 26px; height: 3px; background: #1a3a6b; margin: 3px 0; border-radius: 2px; transition: all 0.3s; }

/* ===== Hero Banner ===== */
.hero { position: relative; height: 85vh; min-height: 500px; max-height: 700px; overflow: hidden; }
.hero-slider { width: 100%; height: 100%; position: relative; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1s ease; background-size: cover; background-position: center; display: flex; align-items: center; }
.hero-slide.active { opacity: 1; }
.hero-slide::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(26,58,107,0.85) 0%, rgba(26,58,107,0.4) 100%); }
.hero-content { position: relative; z-index: 2; color: #fff; max-width: 650px; }
.hero-content h2 { font-size: 2.8rem; font-weight: 800; margin-bottom: 20px; line-height: 1.3; }
.hero-content h2 span { color: #d4a84b; }
.hero-content p { font-size: 1.1rem; line-height: 1.8; margin-bottom: 30px; opacity: 0.9; }
.hero-content .btn { display: inline-block; padding: 14px 40px; background: #d4a84b; color: #fff; font-size: 1rem; font-weight: 600; border-radius: 50px; transition: all 0.3s; border: 2px solid #d4a84b; }
.hero-content .btn:hover { background: transparent; color: #fff; }
.hero-content .btn-outline { margin-left: 15px; background: transparent; border-color: #fff; }
.hero-content .btn-outline:hover { background: #fff; color: #1a3a6b; }
.hero-dots { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 3; }
.hero-dots span { width: 12px; height: 12px; border-radius: 50%; background: rgba(255,255,255,0.4); cursor: pointer; transition: all 0.3s; }
.hero-dots span.active { background: #d4a84b; width: 30px; border-radius: 6px; }

/* ===== Features / 企业优势 ===== */
.features { padding: 60px 0; background: #fff; }
.features .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.feature-card { text-align: center; padding: 35px 20px; border-radius: 12px; transition: all 0.3s; border: 1px solid #eee; }
.feature-card:hover { transform: translateY(-8px); box-shadow: 0 15px 40px rgba(26,58,107,0.1); border-color: #d4a84b; }
.feature-card .icon { width: 70px; height: 70px; line-height: 70px; margin: 0 auto 20px; background: linear-gradient(135deg, #1a3a6b, #2a5a9b); border-radius: 50%; font-size: 1.8rem; color: #fff; }
.feature-card h3 { font-size: 1.1rem; color: #1a3a6b; margin-bottom: 10px; }
.feature-card p { font-size: 0.88rem; color: #888; line-height: 1.6; }

/* ===== About Section ===== */
.about-section .about-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-image { border-radius: 12px; overflow: hidden; box-shadow: 0 10px 40px rgba(0,0,0,0.1); }
.about-image img { width: 100%; height: 400px; object-fit: cover; transition: transform 0.5s; }
.about-image:hover img { transform: scale(1.05); }
.about-text h3 { font-size: 1.8rem; color: #1a3a6b; margin-bottom: 15px; }
.about-text h3 span { color: #d4a84b; }
.about-text p { color: #666; line-height: 1.9; margin-bottom: 15px; }
.about-text .about-info { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; margin-top: 25px; }
.about-text .about-info li { display: flex; align-items: center; color: #555; font-size: 0.95rem; }
.about-text .about-info li::before { content: '✓'; color: #d4a84b; font-weight: bold; margin-right: 10px; }

/* ===== Products Section ===== */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.product-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 5px 20px rgba(0,0,0,0.06); transition: all 0.4s; border: 1px solid #eee; }
.product-card:hover { transform: translateY(-10px); box-shadow: 0 20px 50px rgba(26,58,107,0.12); }
.product-card .product-img { height: 250px; overflow: hidden; position: relative; }
.product-card .product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.product-card:hover .product-img img { transform: scale(1.1); }
.product-card .product-img .tag { position: absolute; top: 15px; left: 15px; background: #d4a84b; color: #fff; padding: 4px 14px; border-radius: 4px; font-size: 0.8rem; font-weight: 600; }
.product-card .product-info { padding: 20px; }
.product-card .product-info h3 { font-size: 1.1rem; color: #1a3a6b; margin-bottom: 8px; }
.product-card .product-info p { font-size: 0.88rem; color: #888; line-height: 1.6; margin-bottom: 15px; }
.product-card .product-info .more { color: #d4a84b; font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 5px; }
.product-card .product-info .more:hover { color: #1a3a6b; }

/* ===== Cases Section ===== */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.case-card { position: relative; border-radius: 12px; overflow: hidden; height: 280px; cursor: pointer; }
.case-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.case-card:hover img { transform: scale(1.1); }
.case-card .case-overlay { position: absolute; bottom: 0; left: 0; right: 0; padding: 25px; background: linear-gradient(transparent, rgba(26,58,107,0.9)); color: #fff; transform: translateY(30px); transition: transform 0.4s; }
.case-card:hover .case-overlay { transform: translateY(0); }
.case-card .case-overlay h4 { font-size: 1.1rem; margin-bottom: 5px; }
.case-card .case-overlay p { font-size: 0.85rem; opacity: 0.9; }

/* ===== Testimonials ===== */
.testimonials { background: #1a3a6b; color: #fff; }
.testimonials .section-title h2 { color: #fff; }
.testimonials .section-title h2::after { background: linear-gradient(90deg, #fff, #d4a84b); }
.testimonials .section-title p { color: rgba(255,255,255,0.7); }
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.testimonial-card { background: rgba(255,255,255,0.08); backdrop-filter: blur(10px); padding: 35px; border-radius: 12px; border: 1px solid rgba(255,255,255,0.1); }
.testimonial-card .stars { color: #d4a84b; margin-bottom: 15px; font-size: 1rem; }
.testimonial-card p { font-size: 0.92rem; line-height: 1.8; opacity: 0.9; margin-bottom: 20px; }
.testimonial-card .client { display: flex; align-items: center; gap: 12px; }
.testimonial-card .client .avatar { width: 45px; height: 45px; border-radius: 50%; background: #d4a84b; display: flex; align-items: center; justify-content: center; font-weight: bold; font-size: 1.1rem; }
.testimonial-card .client .name { font-size: 0.95rem; font-weight: 600; }
.testimonial-card .client .title { font-size: 0.8rem; opacity: 0.7; }

/* ===== CTA Section ===== */
.cta-section { background: linear-gradient(135deg, #1a3a6b, #2a5a9b); padding: 60px 0; text-align: center; color: #fff; }
.cta-section h2 { font-size: 2rem; margin-bottom: 15px; }
.cta-section p { font-size: 1.05rem; opacity: 0.9; margin-bottom: 30px; max-width: 700px; margin-left: auto; margin-right: auto; }
.cta-section .btn { display: inline-block; padding: 15px 45px; background: #d4a84b; color: #fff; font-size: 1.05rem; font-weight: 600; border-radius: 50px; transition: all 0.3s; }
.cta-section .btn:hover { background: #fff; color: #1a3a6b; }

/* ===== Footer ===== */
.footer { background: #0f2440; color: rgba(255,255,255,0.8); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; }
.footer-brand .logo img { height: 50px; }
.footer-brand h3 { color: #fff; font-size: 1.2rem; margin-bottom: 15px; }
.footer-brand p { font-size: 0.88rem; line-height: 1.8; margin-bottom: 15px; }
.footer-brand .social-links a { display: inline-block; width: 36px; height: 36px; line-height: 36px; text-align: center; background: rgba(255,255,255,0.1); border-radius: 50%; margin-right: 8px; font-size: 0.85rem; color: #fff; transition: all 0.3s; }
.footer-brand .social-links a:hover { background: #d4a84b; }
.footer h4 { color: #fff; font-size: 1.05rem; margin-bottom: 20px; position: relative; padding-bottom: 10px; }
.footer h4::after { content: ''; position: absolute; bottom: 0; left: 0; width: 30px; height: 2px; background: #d4a84b; }
.footer-links li { margin-bottom: 10px; }
.footer-links li a { color: rgba(255,255,255,0.7); font-size: 0.88rem; display: flex; align-items: center; gap: 6px; }
.footer-links li a:hover { color: #d4a84b; padding-left: 5px; }
.footer-contact li { display: flex; gap: 12px; margin-bottom: 15px; font-size: 0.88rem; align-items: flex-start; }
.footer-contact li i { color: #d4a84b; font-size: 1rem; margin-top: 3px; }
.footer-qr { display: flex; gap: 15px; margin-top: 10px; }
.footer-qr .qr-item { text-align: center; }
.footer-qr .qr-item img { width: 90px; height: 90px; border-radius: 8px; border: 2px solid rgba(255,255,255,0.1); }
.footer-qr .qr-item span { display: block; font-size: 0.75rem; margin-top: 5px; color: rgba(255,255,255,0.6); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; margin-top: 40px; text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.5); }
.footer-bottom a { color: rgba(255,255,255,0.7); }

/* ===== Page Banner (Inner Pages) ===== */
.page-banner { height: 300px; display: flex; align-items: center; justify-content: center; text-align: center; color: #fff; position: relative; background-size: cover; background-position: center; }
.page-banner::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(26,58,107,0.9), rgba(26,58,107,0.6)); }
.page-banner .banner-content { position: relative; z-index: 2; }
.page-banner h2 { font-size: 2.5rem; font-weight: 700; margin-bottom: 10px; }
.page-banner p { font-size: 1rem; opacity: 0.9; }
.breadcrumb { display: flex; justify-content: center; gap: 8px; font-size: 0.9rem; margin-top: 10px; }
.breadcrumb a { color: rgba(255,255,255,0.8); }
.breadcrumb a:hover { color: #d4a84b; }
.breadcrumb span { color: #d4a84b; }

/* ===== About Page ===== */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-intro-text h2 { font-size: 2rem; color: #1a3a6b; margin-bottom: 20px; }
.about-intro-text p { color: #666; line-height: 2; margin-bottom: 15px; }
.about-intro-img { border-radius: 12px; overflow: hidden; box-shadow: 0 15px 40px rgba(0,0,0,0.1); }
.about-intro-img img { width: 100%; height: 450px; object-fit: cover; }
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 30px; }
.value-card { text-align: center; padding: 40px 25px; background: #fff; border-radius: 12px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); border: 1px solid #eee; transition: all 0.3s; }
.value-card:hover { transform: translateY(-5px); box-shadow: 0 15px 40px rgba(26,58,107,0.1); }
.value-card .icon { font-size: 2.5rem; margin-bottom: 15px; }
.value-card h4 { color: #1a3a6b; font-size: 1.1rem; margin-bottom: 10px; }
.value-card p { color: #888; font-size: 0.88rem; line-height: 1.6; }

/* ===== Culture Page ===== */
.culture-section .culture-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.culture-item { display: flex; gap: 20px; padding: 30px; background: #fff; border-radius: 12px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); border: 1px solid #eee; transition: all 0.3s; }
.culture-item:hover { transform: translateX(5px); border-color: #d4a84b; }
.culture-item .num { font-size: 2.5rem; font-weight: 800; color: #d4a84b; opacity: 0.4; line-height: 1; }
.culture-item .info h4 { color: #1a3a6b; font-size: 1.15rem; margin-bottom: 8px; }
.culture-item .info p { color: #888; font-size: 0.88rem; line-height: 1.7; }

/* ===== News Page ===== */
.news-list { display: grid; gap: 25px; }
.news-item { display: flex; gap: 25px; padding: 25px; background: #fff; border-radius: 12px; box-shadow: 0 5px 20px rgba(0,0,0,0.04); border: 1px solid #eee; transition: all 0.3s; }
.news-item:hover { transform: translateX(5px); box-shadow: 0 10px 30px rgba(26,58,107,0.08); }
.news-item .news-date { min-width: 80px; text-align: center; padding: 10px; background: #1a3a6b; color: #fff; border-radius: 8px; align-self: flex-start; }
.news-item .news-date .day { font-size: 1.5rem; font-weight: 700; display: block; }
.news-item .news-date .month { font-size: 0.8rem; opacity: 0.8; }
.news-item .news-content { flex: 1; }
.news-item .news-content h4 { color: #1a3a6b; font-size: 1.1rem; margin-bottom: 8px; }
.news-item .news-content h4 a:hover { color: #d4a84b; }
.news-item .news-content p { color: #888; font-size: 0.88rem; line-height: 1.7; }
.news-item .news-content .news-tag { display: inline-block; padding: 2px 12px; background: #f0f4ff; color: #1a3a6b; border-radius: 20px; font-size: 0.78rem; margin-bottom: 8px; }

/* ===== Contact Page ===== */
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-info-card { background: #1a3a6b; color: #fff; padding: 40px; border-radius: 12px; }
.contact-info-card h3 { font-size: 1.5rem; margin-bottom: 25px; }
.contact-info-card .info-item { display: flex; gap: 15px; margin-bottom: 25px; align-items: flex-start; }
.contact-info-card .info-item i { font-size: 1.3rem; color: #d4a84b; margin-top: 3px; min-width: 25px; }
.contact-info-card .info-item p { font-size: 0.92rem; line-height: 1.6; opacity: 0.9; }
.contact-info-card .qr-codes { display: flex; gap: 20px; margin-top: 20px; flex-wrap: wrap; }
.contact-info-card .qr-codes .qr-item { text-align: center; }
.contact-info-card .qr-codes .qr-item img { width: 100px; height: 100px; border-radius: 8px; border: 2px solid rgba(255,255,255,0.2); }
.contact-info-card .qr-codes .qr-item span { display: block; font-size: 0.8rem; margin-top: 6px; opacity: 0.8; }
.contact-form { padding: 40px; background: #f8f9fc; border-radius: 12px; }
.contact-form h3 { font-size: 1.4rem; color: #1a3a6b; margin-bottom: 10px; }
.contact-form .form-group { margin-bottom: 20px; }
.contact-form .form-group label { display: block; font-size: 0.9rem; color: #555; margin-bottom: 6px; font-weight: 500; }
.contact-form .form-group input,
.contact-form .form-group textarea,
.contact-form .form-group select { width: 100%; padding: 12px 16px; border: 1px solid #ddd; border-radius: 8px; font-size: 0.95rem; font-family: inherit; transition: all 0.3s; background: #fff; }
.contact-form .form-group input:focus,
.contact-form .form-group textarea:focus { outline: none; border-color: #1a3a6b; box-shadow: 0 0 0 3px rgba(26,58,107,0.1); }
.contact-form .form-group textarea { height: 120px; resize: vertical; }
.contact-form .submit-btn { padding: 14px 40px; background: #1a3a6b; color: #fff; border: none; border-radius: 50px; font-size: 1rem; font-weight: 600; cursor: pointer; transition: all 0.3s; }
.contact-form .submit-btn:hover { background: #d4a84b; }

/* ===== Product Detail Page ===== */
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.product-detail-img { border-radius: 12px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
.product-detail-img img { width: 100%; height: 450px; object-fit: cover; }
.product-detail-info h2 { font-size: 1.8rem; color: #1a3a6b; margin-bottom: 15px; }
.product-detail-info .desc { color: #666; line-height: 2; margin-bottom: 20px; }
.product-detail-info .features-list li { padding: 8px 0; display: flex; align-items: center; gap: 10px; color: #555; font-size: 0.95rem; border-bottom: 1px solid #f0f0f0; }
.product-detail-info .features-list li::before { content: '◆'; color: #d4a84b; font-size: 0.7rem; }
.product-detail-info .contact-btn { display: inline-block; margin-top: 20px; padding: 14px 40px; background: #d4a84b; color: #fff; border-radius: 50px; font-weight: 600; transition: all 0.3s; }
.product-detail-info .contact-btn:hover { background: #1a3a6b; }

/* ===== Cases Page ===== */
.cases-page-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 25px; }
.case-page-item { position: relative; border-radius: 12px; overflow: hidden; height: 320px; }
.case-page-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.case-page-item:hover img { transform: scale(1.08); }
.case-page-item .case-info { position: absolute; bottom: 0; left: 0; right: 0; padding: 30px; background: linear-gradient(transparent, rgba(26,58,107,0.95)); color: #fff; }
.case-page-item .case-info h4 { font-size: 1.2rem; margin-bottom: 5px; }
.case-page-item .case-info p { font-size: 0.85rem; opacity: 0.8; }

/* ===== Back to Top ===== */
.back-top { position: fixed; bottom: 30px; right: 30px; width: 45px; height: 45px; background: #1a3a6b; color: #fff; border: none; border-radius: 50%; font-size: 1.2rem; cursor: pointer; z-index: 999; opacity: 0; visibility: hidden; transition: all 0.3s; display: flex; align-items: center; justify-content: center; }
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: #d4a84b; transform: translateY(-3px); }

/* ===== Floating Contact Bar ===== */
.float-contact { position: fixed; right: 20px; bottom: 90px; z-index: 999; display: flex; flex-direction: column; gap: 10px; }
.float-contact a { display: flex; align-items: center; justify-content: center; width: 50px; height: 50px; border-radius: 50%; background: #1a3a6b; color: #fff; font-size: 1.1rem; transition: all 0.3s; box-shadow: 0 5px 15px rgba(0,0,0,0.15); }
.float-contact a:hover { background: #d4a84b; transform: scale(1.1); }
.float-contact .tooltip { position: absolute; right: 60px; background: #1a3a6b; color: #fff; padding: 6px 14px; border-radius: 6px; font-size: 0.8rem; white-space: nowrap; opacity: 0; visibility: hidden; transition: all 0.3s; }
.float-contact a:hover .tooltip { opacity: 1; visibility: visible; }

/* ===== Responsive - Tablet ===== */
@media (max-width: 992px) {
    .container { padding: 0 15px; }
    .hero { height: 60vh; min-height: 400px; }
    .hero-content h2 { font-size: 2rem; }
    .features .grid { grid-template-columns: repeat(2, 1fr); }
    .about-section .about-wrap { grid-template-columns: 1fr; gap: 30px; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonial-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .about-intro { grid-template-columns: 1fr; }
    .values-grid { grid-template-columns: repeat(2, 1fr); }
    .culture-section .culture-grid { grid-template-columns: 1fr; }
    .contact-wrap { grid-template-columns: 1fr; }
    .product-detail { grid-template-columns: 1fr; }
    .cases-page-grid { grid-template-columns: 1fr; }
}

/* ===== Responsive - Mobile ===== */
@media (max-width: 768px) {
    .top-bar .container { flex-direction: column; gap: 5px; }
    .top-bar .top-contact span { margin: 0 8px; font-size: 0.8rem; }
    .menu-toggle { display: flex; }
    .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; box-shadow: 0 10px 30px rgba(0,0,0,0.1); padding: 10px 0; max-height: 80vh; overflow-y: auto; }
    .nav.active { display: flex; }
    .nav > li > a { padding: 12px 20px; border-bottom: 1px solid #f0f0f0; }
    .dropdown-menu { position: static; box-shadow: none; opacity: 1; visibility: visible; transform: none; border-radius: 0; display: none; background: #f8f9fc; }
    .nav > li.active-dropdown .dropdown-menu { display: block; }
    .dropdown-menu li a { padding-left: 35px; }
    .hero { height: 50vh; min-height: 350px; }
    .hero-content h2 { font-size: 1.5rem; }
    .hero-content p { font-size: 0.9rem; }
    .hero-content .btn { padding: 10px 25px; font-size: 0.9rem; }
    .hero-content .btn-outline { margin-left: 8px; }
    .section { padding: 50px 0; }
    .section-title h2 { font-size: 1.5rem; }
    .features .grid { grid-template-columns: 1fr 1fr; gap: 15px; }
    .feature-card { padding: 25px 15px; }
    .about-text h3 { font-size: 1.4rem; }
    .about-text .about-info { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .page-banner { height: 200px; }
    .page-banner h2 { font-size: 1.6rem; }
    .about-intro-text h2 { font-size: 1.4rem; }
    .values-grid { grid-template-columns: 1fr; }
    .news-item { flex-direction: column; }
    .news-item .news-date { display: flex; gap: 5px; align-items: center; min-width: auto; padding: 8px 15px; }
    .news-item .news-date .day { font-size: 1.2rem; display: inline; }
    .logo-text h1 { font-size: 1rem; }
    .logo img { height: 40px; }
    .contact-info-card { padding: 25px; }
    .contact-form { padding: 25px; }
    .product-detail-img img { height: 300px; }
    .float-contact { right: 10px; bottom: 80px; }
    .float-contact a { width: 42px; height: 42px; font-size: 0.95rem; }
}

@media (max-width: 480px) {
    .features .grid { grid-template-columns: 1fr; }
    .hero { height: 45vh; min-height: 300px; }
    .hero-content h2 { font-size: 1.3rem; }
}