:root {
    --primary: #1F2937;
    --secondary: #4A90E2;
    --bg: #F0F4F8;
    --card-bg: rgba(255, 255, 255, 0.8);
    --radius: 20px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #F0F4F8 0%, #E2E8F0 100%);
    color: var(--primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    text-align: center;
}

header {
    width: 100%;
    padding: 4rem 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 3rem;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
    max-width: 800px;
    width: 90%;
}

.logo {
    width: 120px;
    height: 120px;
    border-radius: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 3rem;
    margin: 0;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    font-size: 1.25rem;
    color: #4B5563;
    margin-top: 0.5rem;
    line-height: 1.5;
}

.products {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    width: 90%;
    padding: 2rem 1rem;
}

.product-card {
    background: var(--card-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 2.5rem;
    border-radius: var(--radius);
    box-shadow: 0 4px 6px rgba(0,0,0,0.03);
    text-decoration: none;
    color: inherit;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    border: 1px solid rgba(255, 255, 255, 0.4);
    display: flex;
    flex-direction: column;
    text-align: left;
}

.product-card:hover {
    transform: translateY(-10px);
    border-color: var(--secondary);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.product-card h2 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--secondary);
    font-size: 1.75rem;
    font-weight: 700;
}

.product-card p {
    margin: 0;
    line-height: 1.6;
    color: #4B5563;
    font-size: 1.1rem;
}

footer {
    margin-top: auto;
    padding: 4rem 1rem;
    color: #9CA3AF;
    font-size: 0.9rem;
}

@media (max-width: 640px) {
    header {
        padding: 2rem 1rem;
    }
    .logo-group {
        padding: 2rem 1.5rem;
    }
    .logo {
        width: 80px;
        height: 80px;
    }
    header h1 {
        font-size: 2.25rem;
    }
    .tagline {
        font-size: 1.1rem;
    }
    .product-card {
        padding: 2rem;
    }
}