body {
    font-family: 'Inter', sans-serif;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

.bg-grid {
    background-image: radial-gradient(#e5e7eb 1px, transparent 1px);
    background-size: 40px 40px;
}

.dark-grid {
    background-image: radial-gradient(#27272a 1px, transparent 1px);
    background-size: 30px 30px;
}

.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.blue-gradient {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
}

.dark-section {
    background-color: #09090b; /* Еще более глубокий черный */
    color: white;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.animate-float {
    animation: float 4s ease-in-out infinite;
}

section {
    opacity: 0;
    transform: translateY(40px);
    transition: all 1s ease-out;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

.step-line::after {
    content: '';
    position: absolute;
    top: 40px;
    left: 50%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #2563eb, transparent);
    z-index: -1;
}

@media (max-width: 1024px) {
    .step-line::after { display: none; }
}

.glow-blue {
    box-shadow: 0 0 40px -10px rgba(37, 99, 235, 0.3);
}