body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #e8e6e3;
    background: linear-gradient(135deg, #0c0f1d 0%, #1a1f3d 50%, #0c0f1d 100%);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
            radial-gradient(circle at 20% 30%, rgba(41, 128, 185, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 80% 70%, rgba(52, 152, 219, 0.08) 0%, transparent 50%),
            url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><style>.a{fill:none;stroke:%232496db;stroke-width:0.3;opacity:0.1;}</style></defs><path class="a" d="M20,20 L80,20 L80,80 L20,80 Z"/><circle class="a" cx="50" cy="50" r="15"/><path class="a" d="M30,30 L70,70 M70,30 L30,70"/></svg>');
    pointer-events: none;
    z-index: -1;
}

.promo-section {
    max-width: 1500px;
    margin: 0 auto;
    padding: 140px 20px 80px 20px;
}

.header {
    text-align: center;
    margin-bottom: 60px;
}

.header h1 {
    font-size: 3rem;
    background: linear-gradient(135deg, #3498db 0%, #2ecc71 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.header .subtitle {
    font-size: 1.3rem;
    color: #bdc3c7;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

.glass-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 40px;
    box-shadow:
            0 8px 32px rgba(0, 0, 0, 0.3),
            inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.main-task h2 {
    color: #3498db;
    margin-bottom: 25px;
    font-size: 2rem;
    font-weight: 600;
}

.main-task p {
    font-size: 1.1rem;
    color: #ecf0f1;
    margin-bottom: 20px;
    line-height: 1.7;
}

.highlight {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.2), rgba(46, 204, 113, 0.2));
    padding: 3px 8px;
    border-radius: 6px;
    font-weight: 600;
}

.key-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin: 50px 0;
}

.point-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 30px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.point-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #3498db, #2ecc71);
}

.point-card:hover {
    transform: translateY(-8px);
    border-color: rgba(52, 152, 219, 0.3);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.point-card h3 {
    color: #3498db;
    margin-bottom: 15px;
    font-size: 1.4rem;
    font-weight: 600;
}

.point-card p {
    color: #bdc3c7;
    line-height: 1.6;
}

.screenshots {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 60px 0;
}

.screenshot-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #7f8c8d;
    font-style: italic;
    position: relative;
    backdrop-filter: blur(10px);
}

.screenshot-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.1), rgba(46, 204, 113, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.screenshot-item:hover {
    transform: scale(1.03);
}

.screenshot-item:hover::before {
    opacity: 1;
}

.additional-info {
    margin-top: 60px;
}

.company-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.detail-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 20px;
    border-radius: 12px;
    border-left: 4px solid #3498db;
}

.detail-item strong {
    color: #3498db;
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}

.tech-tag {
    background: rgba(52, 152, 219, 0.15);
    color: #3498db;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(52, 152, 219, 0.3);
    backdrop-filter: blur(10px);
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 2.2rem;
    }

    .glass-card {
        padding: 25px;
    }

    .key-points {
        grid-template-columns: 1fr;
    }

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

.section-title {
    color: #3498db;
    font-size: 1.8rem;
    margin-bottom: 30px;
    font-weight: 600;
    text-align: center;
}