* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

.container {
    background: white;
    max-width: 800px;
    width: 100%;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    overflow: hidden;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header {
    background: white;
    padding: 20px 30px;
    border-bottom: 1px solid #e5e5e5;
    text-align: left;
}

.logo {
    width: 120px;
    height: auto;
}

.banner {
    background: linear-gradient(135deg, #008EDD 0%, #0060A2 60%, #A3D043 100%);
    color: white;
    padding: 40px 30px;
    position: relative;
    overflow: hidden;
}

.banner-content {
    position: relative;
    z-index: 2;
    max-width: 60%;
}

.banner h1 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    margin: 0 0 15px 0;
}

.banner p {
    font-size: 18px;
    font-weight: 400;
    opacity: 0.95;
    line-height: 1.4;
    margin: 0;
}

.content {
    padding: 40px 30px;
}

.greeting {
    font-size: 20px;
    color: #333;
    margin-bottom: 25px;
    font-weight: 600;
}

.description {
    color: #666;
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 30px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.feature {
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
    padding: 20px;
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #008EDD, #0060A2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    color: white;
    font-size: 20px;
}

.feature-title {
    color: #0060A2;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 8px;
}

.feature-desc {
    color: #666;
    font-size: 12px;
    line-height: 1.4;
}

.countdown {
    background: linear-gradient(135deg, #0060A2, #008EDD);
    color: white;
    padding: 20px;
    border-radius: 4px;
    margin: 25px 0;
    text-align: center;
}

.countdown-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
}

.countdown-timer {
    font-size: 24px;
    font-weight: 700;
    color: #A3D043;
}

.countdown-cancel {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    margin-top: 10px;
    transition: background 0.3s ease;
}

.countdown-cancel:hover {
    background: rgba(255, 255, 255, 0.3);
}

.redirect-btn {
    background: linear-gradient(135deg, #008EDD, #0060A2);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    max-width: 400px;
    margin: 20px auto;
    display: block;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.redirect-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 96, 162, 0.3);
}

.footer {
    background: #f8f9fa;
    padding: 25px 30px;
    border-top: 1px solid #e5e5e5;
    text-align: center;
}

.footer-title {
    color: #0060A2;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 8px;
}

.footer-desc {
    color: #666;
    font-size: 12px;
    line-height: 1.5;
}

.hidden {
    display: none;
}

.loading {
    margin-left: 8px;
}

@media (max-width: 768px) {
    body { 
        padding: 10px; 
    }
    
    .features { 
        display: block; 
    }
    
    .feature { 
        margin-bottom: 15px; 
    }
    
    .banner h1 { 
        font-size: 24px; 
    }
    
    .banner-content { 
        max-width: 100%; 
    }
    
    .logo { 
        width: 100px; 
    }
}