body {
            font-family: 'Arial', sans-serif;
            margin: 0;
            padding: 0;
            color: black;
            line-height: 1.6;
        }
        header {
            background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.9)), url('pix_/20250915_bluelogo01.png');
            background-size: cover;
            background-position: center;
            height: 100vh;
            color: white;
            text-align: center;
            padding: 0 20px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
        }
        p.lead {
            font-size: 1.5rem;
            max-width: 800px;
            margin: 0 auto 30px;
        }
        .btn {
            display: inline-block;
            background: #ff6b6b;
            color: white;
            padding: 12px 30px;
            text-decoration: none;
            border-radius: 5px;
            font-weight: bold;
            margin-top: 20px;
        }
        .btn:hover {
            background: #ff5252;
        }
        section {
            padding: 60px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .section-title {
            text-align: center;
            margin-bottom: 40px;
            font-size: 2.5rem;
        }
        .timeline {
            position: relative;
            max-width: 1000px;
            margin: 0 auto;
        }
        .timeline::after {
            content: '';
            position: absolute;
            width: 4px;
            background-color: #ff6b6b;
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
        }
        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            box-sizing: border-box;
        }
        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            background-color: #ff6b6b;
            border-radius: 50%;
            top: 15px;
            z-index: 1;
        }
        .timeline-item.left {
            left: 0;
        }
        .timeline-item.right {
            left: 50%;
        }
        .timeline-item.right::after {
            left: -10px;
        }
        .timeline-item.left::after {
            right: -10px;
        }
        .timeline-content {
            padding: 20px;
            background: white;
            position: relative;
            border-radius: 6px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
        }
        footer {
            background: #333;
            color: white;
            text-align: center;
            padding: 20px;
            margin-top: 40px;
        }
        @media (max-width: 768px) {
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-item::after {
                left: 21px;
            }
            .timeline-item.right {
                left: 0;
            }
            .timeline-item.right::after {
                left: 21px;
            }
        }