* { margin: 0; padding: 0; box-sizing: border-box; }
:root { --primary: #1a2a6c; --secondary: #b21f1f; --accent: #fdbb2d; --bg: #f8f9fa; --card-bg: #fff; --text: #333; --text-light: #666; --border: #e0e0e0; --shadow: 0 8px 32px rgba(0,0,0,0.1); --glass: rgba(255,255,255,0.85); --radius: 16px; --transition: 0.3s ease; }
.dark-mode { --bg: #121212; --card-bg: #1e1e1e; --text: #e0e0e0; --text-light: #aaa; --border: #333; --shadow: 0 8px 32px rgba(0,0,0,0.5); --glass: rgba(30,30,30,0.85); }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; transition: background var(--transition), color var(--transition); }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--secondary); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background: var(--glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); transition: background var(--transition), border var(--transition); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 20px; max-width: 1200px; margin: 0 auto; }
.logo { display: flex; align-items: center; gap: 12px; font-size: 1.6rem; font-weight: 800; color: var(--primary); }
.logo svg { width: 40px; height: 40px; }
nav { display: flex; align-items: center; gap: 8px; }
nav a { padding: 8px 14px; border-radius: 8px; font-size: 0.95rem; font-weight: 500; color: var(--text); transition: background var(--transition), color var(--transition); }
nav a:hover, nav a.active { background: var(--primary); color: #fff; }
.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: none; border: none; }
.menu-toggle span { width: 26px; height: 3px; background: var(--text); border-radius: 3px; transition: var(--transition); }
.dark-toggle { background: none; border: 2px solid var(--border); border-radius: 50%; width: 40px; height: 40px; cursor: pointer; font-size: 1.2rem; display: flex; align-items: center; justify-content: center; transition: var(--transition); color: var(--text); }
.dark-toggle:hover { border-color: var(--primary); }
.hero { padding: 140px 0 80px; background: linear-gradient(135deg, var(--primary), #4a2c8a, var(--secondary)); color: #fff; text-align: center; position: relative; overflow: hidden; }
.hero::after { content: ''; position: absolute; inset: 0; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='rgba(255,255,255,0.05)' d='M0,224L60,213.3C120,203,240,181,360,181.3C480,181,600,203,720,213.3C840,224,960,224,1080,213.3C1200,203,1320,181,1380,170.7L1440,160L1440,320L0,320Z'/%3E%3C/svg%3E") no-repeat bottom; background-size: cover; opacity: 0.3; }
.hero-content { position: relative; z-index: 1; }
.hero h1 { font-size: 3.2rem; font-weight: 800; margin-bottom: 24px; text-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.hero p { font-size: 1.3rem; max-width: 700px; margin: 0 auto 40px; opacity: 0.9; }
.hero .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero .btn { padding: 14px 40px; border-radius: 50px; font-size: 1.1rem; font-weight: 700; border: none; cursor: pointer; transition: transform var(--transition), box-shadow var(--transition); display: inline-block; }
.hero .btn-primary { background: var(--accent); color: var(--primary); box-shadow: 0 8px 30px rgba(253,187,45,0.4); }
.hero .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(253,187,45,0.6); }
.hero .btn-outline { background: transparent; border: 2px solid #fff; color: #fff; }
.hero .btn-outline:hover { background: #fff; color: var(--primary); transform: translateY(-3px); }
.hero-banner-svg { max-width: 600px; margin: 40px auto 0; }
.hero-banner-svg svg { width: 100%; height: auto; }
section { padding: 80px 0; }
.section-title { text-align: center; font-size: 2.4rem; font-weight: 800; margin-bottom: 16px; color: var(--primary); }
.section-subtitle { text-align: center; font-size: 1.1rem; color: var(--text-light); max-width: 700px; margin: 0 auto 60px; }
.brand-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.brand-card { background: var(--card-bg); border-radius: var(--radius); padding: 40px 30px; box-shadow: var(--shadow); transition: transform var(--transition), box-shadow var(--transition); text-align: center; border: 1px solid var(--border); }
.brand-card:hover { transform: translateY(-8px); box-shadow: 0 16px 48px rgba(0,0,0,0.15); }
.brand-card svg { width: 80px; height: 80px; margin-bottom: 20px; }
.brand-card h3 { font-size: 1.4rem; margin-bottom: 12px; }
.brand-card p { color: var(--text-light); }
.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 30px; }
.product-card { background: var(--card-bg); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); transition: transform var(--transition), box-shadow var(--transition); border: 1px solid var(--border); }
.product-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,0,0,0.12); }
.product-card svg { width: 100%; height: 180px; object-fit: contain; margin-bottom: 16px; border-radius: 12px; background: var(--bg); }
.product-card h3 { font-size: 1.3rem; margin-bottom: 8px; }
.product-card p { color: var(--text-light); font-size: 0.95rem; }
.testimonial-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.testimonial-card { background: var(--card-bg); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.testimonial-card .stars { color: var(--accent); font-size: 1.2rem; margin-bottom: 12px; }
.testimonial-card p { font-style: italic; color: var(--text-light); }
.testimonial-card .author { margin-top: 16px; font-weight: 600; }
.partner-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 40px; margin-top: 40px; }
.partner-grid svg { width: 120px; height: 60px; opacity: 0.7; transition: opacity var(--transition); }
.partner-grid svg:hover { opacity: 1; }
.article-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.article-card { background: var(--card-bg); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); transition: transform var(--transition); border: 1px solid var(--border); }
.article-card:hover { transform: translateY(-4px); }
.article-card .date { font-size: 0.85rem; color: var(--text-light); margin-bottom: 8px; }
.article-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.article-card p { color: var(--text-light); font-size: 0.95rem; margin-bottom: 16px; }
.article-card .read-more { font-weight: 600; color: var(--primary); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--card-bg); border-radius: var(--radius); margin-bottom: 12px; border: 1px solid var(--border); overflow: hidden; }
.faq-question { padding: 20px 24px; cursor: pointer; font-weight: 600; display: flex; justify-content: space-between; align-items: center; transition: background var(--transition); }
.faq-question:hover { background: rgba(26,42,108,0.05); }
.faq-question .icon { transition: transform var(--transition); font-size: 1.2rem; }
.faq-item.active .faq-question .icon { transform: rotate(180deg); }
.faq-answer { padding: 0 24px 20px; color: var(--text-light); display: none; }
.faq-item.active .faq-answer { display: block; }
.howto-steps { max-width: 800px; margin: 0 auto; }
.howto-step { display: flex; gap: 20px; margin-bottom: 30px; align-items: flex-start; }
.howto-step .step-num { width: 40px; height: 40px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
.howto-step h4 { margin-bottom: 8px; }
.howto-step p { color: var(--text-light); }
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 30px; text-align: center; }
.contact-card { background: var(--card-bg); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.contact-card svg { width: 50px; height: 50px; margin-bottom: 16px; }
.contact-card h4 { margin-bottom: 8px; }
.contact-card p { color: var(--text-light); }
footer { background: var(--primary); color: #fff; padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; margin-bottom: 40px; }
.footer-col h4 { font-size: 1.2rem; margin-bottom: 20px; color: var(--accent); }
.footer-col a { display: block; color: rgba(255,255,255,0.8); margin-bottom: 8px; font-size: 0.95rem; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.2); padding-top: 20px; text-align: center; font-size: 0.9rem; color: rgba(255,255,255,0.7); }
.footer-bottom a { color: var(--accent); }
.back-to-top { position: fixed; bottom: 40px; right: 40px; width: 50px; height: 50px; background: var(--primary); color: #fff; border: none; border-radius: 50%; cursor: pointer; font-size: 1.5rem; display: none; align-items: center; justify-content: center; box-shadow: 0 8px 24px rgba(0,0,0,0.2); transition: opacity var(--transition), transform var(--transition); z-index: 999; }
.back-to-top.show { display: flex; }
.back-to-top:hover { transform: scale(1.1); }
.breadcrumb { padding: 100px 0 20px; font-size: 0.9rem; color: var(--text-light); }
.breadcrumb a { color: var(--primary); }
.breadcrumb span { margin: 0 6px; }
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
@media (max-width: 768px) {
    .menu-toggle { display: flex; }
    nav { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; width: 100%; background: var(--glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); padding: 20px; box-shadow: var(--shadow); }
    nav.open { display: flex; }
    .hero h1 { font-size: 2.2rem; }
    .hero p { font-size: 1.1rem; }
    .section-title { font-size: 1.8rem; }
    .footer-grid { grid-template-columns: 1fr; }
    .back-to-top { bottom: 20px; right: 20px; width: 44px; height: 44px; font-size: 1.2rem; }
}
@media (max-width: 480px) {
    .hero h1 { font-size: 1.8rem; }
    .hero .btn { padding: 12px 28px; font-size: 1rem; }
    .brand-card, .product-card, .testimonial-card { padding: 20px; }
}