:root {
    --bos-blue: #0057b8;
    --bos-dark: #1d1d1d;
    --bos-gray: #f5f5f5;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: white;
    color: var(--bos-dark);
    line-height: 1.6;
}

.container {
    width: min(1280px, 90%);
    margin: auto;
}

.site-header {
    padding: 24px 0;
    position: sticky;
    top: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.main-navigation ul {
    display: flex;
    gap: 32px;
    list-style: none;
}

.main-navigation a {
    text-decoration: none;
    color: var(--bos-dark);
    font-weight: 600;
}

.hero-section {
    min-height: 85vh;
    display: flex;
    align-items: center;
    background: linear-gradient(to bottom, #ffffff, #f7f7f7);
}

.hero-content h1 {
    font-size: 72px;
    line-height: 1;
    margin-bottom: 24px;
}

.hero-content h1 span {
    color: var(--bos-blue);
}

.hero-content p {
    max-width: 650px;
    font-size: 20px;
    margin-bottom: 40px;
}

.btn-primary {
    display: inline-flex;
    padding: 16px 32px;
    border-radius: 999px;
    background: var(--bos-blue);
    color: white;
    text-decoration: none;
    font-weight: 700;
}

.products-section {
    padding: 120px 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.product-card {
    background: white;
    border-radius: 32px;
    overflow: hidden;
    padding: 24px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.05);
}

.product-number {
    font-size: 42px;
    font-weight: 800;
    color: var(--bos-blue);
}

.cta-section {
    padding: 140px 0;
    text-align: center;
    background: var(--bos-gray);
}

.site-footer {
    padding: 80px 0;
    background: white;
    border-top: 1px solid #eee;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
}

@media(max-width: 768px) {

    .products-grid {
        grid-template-columns: 1fr;
    }

    .hero-content h1 {
        font-size: 42px;
    }

    .footer-grid {
        flex-direction: column;
        gap: 24px;
    }
}