/* Instructions Block */
.instructions {
    background-color: var(--white);
    text-align: center;
}

.os-buttons {
    display: flex;
    gap: 30px;
    justify-content: center;
    margin-top: 40px;
    flex-wrap: wrap;
}

.os-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 25px 50px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 20px;
    transition: all 0.3s ease;
    text-decoration: none;
    min-width: 250px;
    height: 80px;
}

.os-btn.windows {
    background-color: #0078D7;
    color: white;
}

.os-btn.macos {
    background-color: #000000;
    color: white;
}

.os-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.os-icon {
    width: 1.8em;
    height: 1.8em;
    margin-right: 15px;
    fill: currentColor;
}

/* Supported OS */
.supported-os {
    background-color: var(--light);
}

.os-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.os-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border);
}

.os-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.os-icon-lg {
    width: 3.5em;
    height: 3.5em;
    margin-bottom: 20px;
    fill: var(--accent);
}

.os-list {
    list-style: none;
    text-align: left;
    margin-top: 20px;
    padding: 0 20px;
}

.os-list li {
    margin-bottom: 12px;
    position: relative;
    padding-left: 30px;
    font-size: 15px;
}

.os-list li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
    font-size: 16px;
}

/* Адаптивность */
@media (max-width: 768px) {
    .os-buttons {
        gap: 15px;
    }

    .os-btn {
        min-width: 200px;
        height: 70px;
        font-size: 18px;
        padding: 20px 30px;
    }

    .os-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .os-grid {
        grid-template-columns: 1fr;
    }

    .os-btn {
        width: 100%;
    }
}

/* SEO Block */
.seo-block {
    background-color: var(--white);

}
.seo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.seo-card {
    background-color: var(--light);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.seo-card h3 {
    color: var(--dark);
    margin-bottom: 15px;
}

/* Адаптивность */
@media (max-width: 768px) {
    .os-buttons {
        flex-direction: column;
    }

    .os-btn {
        width: 100%;
        justify-content: center;
    }
}