* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #333; background: #fff; }
a { text-decoration: none; color: inherit; }

/* Header */
header {
    position: fixed; top: 0; width: 100%; z-index: 100;
    background: rgba(10, 20, 40, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
nav {
    max-width: 1200px; margin: 0 auto; padding: 0 20px;
    display: flex; align-items: center; height: 70px;
    justify-content: space-between;
}
.logo h1 {
    font-size: 24px; color: #4fc3f7; letter-spacing: 2px;
}
.logo span { font-size: 12px; color: #8899aa; margin-left: 4px; }
.nav-links { display: flex; list-style: none; gap: 32px; }
.nav-links a {
    color: #ccd; font-size: 14px; transition: color 0.3s;
    padding: 4px 0; border-bottom: 2px solid transparent;
}
.nav-links a:hover, .nav-links a.active { color: #4fc3f7; border-bottom-color: #4fc3f7; }
.lang-switch { font-size: 13px; color: #8899aa; }
.lang-switch a.active { color: #4fc3f7; font-weight: 600; }
.lang-switch span { margin: 0 8px; }

/* Hero */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, #0a1428 0%, #0f2040 40%, #162a50 100%);
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute; width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(79,195,247,0.08) 0%, transparent 70%);
    top: -200px; right: -200px;
}
.hero::after {
    content: '';
    position: absolute; width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(100,200,255,0.05) 0%, transparent 70%);
    bottom: -100px; left: -100px;
}
.hero-content { text-align: center; z-index: 1; padding: 0 20px; }
.hero-content h2 {
    font-size: 48px; color: #fff; line-height: 1.3;
    margin-bottom: 20px; letter-spacing: 2px;
}
.hero-content p {
    font-size: 18px; color: #8899bb; line-height: 1.8;
    margin-bottom: 36px;
}
.hero-btns { display: flex; gap: 16px; justify-content: center; }
.btn-primary, .btn-secondary {
    padding: 14px 36px; border-radius: 6px; font-size: 15px;
    transition: all 0.3s; font-weight: 500;
}
.btn-primary {
    background: #4fc3f7; color: #0a1428;
}
.btn-primary:hover { background: #39b0e4; transform: translateY(-2px); }
.btn-secondary {
    background: transparent; color: #4fc3f7;
    border: 1px solid rgba(79,195,247,0.4);
}
.btn-secondary:hover { background: rgba(79,195,247,0.1); transform: translateY(-2px); }

/* Section common */
.section-title {
    text-align: center; padding: 60px 20px 20px;
}
.section-title h3 {
    font-size: 32px; color: #1a2a4a; margin-bottom: 12px;
}
.section-title p { font-size: 16px; color: #8899aa; }

/* Products */
.products { padding: 20px 20px 60px; max-width: 1200px; margin: 0 auto; }
.product-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px; padding: 20px;
}
.product-card {
    background: #f8fafc; border-radius: 12px; padding: 36px 24px;
    text-align: center; border: 1px solid #eef2f7;
    transition: all 0.3s;
}
.product-card:hover {
    transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0,0,0,0.08);
    border-color: #4fc3f7;
}
.card-icon { font-size: 40px; margin-bottom: 16px; }
.product-card h4 { font-size: 18px; color: #1a2a4a; margin-bottom: 12px; }
.product-card p { font-size: 14px; color: #8899aa; line-height: 1.6; margin-bottom: 16px; }
.card-link { color: #4fc3f7; font-size: 14px; font-weight: 500; }

/* Applications */
.applications { background: #f5f8fc; padding: 20px 20px 60px; }
.app-grid {
    max-width: 1200px; margin: 0 auto;
    display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px; padding: 20px;
}
.app-card {
    background: #fff; border-radius: 12px; padding: 32px 20px;
    text-align: center; border: 1px solid #eef2f7;
    transition: all 0.3s;
}
.app-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.06); }
.app-icon { font-size: 36px; margin-bottom: 12px; }
.app-card h4 { font-size: 18px; color: #1a2a4a; margin-bottom: 8px; }
.app-card p { font-size: 14px; color: #8899aa; }

/* Stats */
.stats {
    display: flex; justify-content: center; gap: 60px;
    padding: 60px 20px; background: #0a1428;
    flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-num {
    display: block; font-size: 42px; font-weight: 700;
    color: #4fc3f7; margin-bottom: 8px;
}
.stat-label { font-size: 15px; color: #8899bb; }

/* Footer */
footer { background: #060e1e; }
.footer-content {
    max-width: 1200px; margin: 0 auto;
    display: grid; grid-template-columns: 2fr 1fr 1fr;
    gap: 40px; padding: 60px 20px;
}
.footer-brand h3 { color: #4fc3f7; font-size: 20px; margin-bottom: 8px; }
.footer-brand p { color: #667788; font-size: 14px; }
.footer-links h4, .footer-contact h4 { color: #ccd; font-size: 15px; margin-bottom: 16px; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: #667788; font-size: 14px; transition: color 0.3s; }
.footer-links a:hover { color: #4fc3f7; }
.footer-contact p { color: #667788; font-size: 14px; margin-bottom: 8px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.05);
    text-align: center; padding: 20px;
}
.footer-bottom p { color: #445566; font-size: 13px; }

/* Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-content h2 { font-size: 32px; }
    .hero-content p { font-size: 15px; }
    .footer-content { grid-template-columns: 1fr; }
    .stats { gap: 30px; }
    .stat-num { font-size: 32px; }
}