* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background-color: #f5f7fa;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 800px;
    width: 100%;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.ad-container {
    background: #f8f9fa;
    padding: 40px 20px;
    text-align: center;
    border-bottom: 1px solid #eee;
}

.ad-title {
    font-size: 24px;
    color: #333;
    margin-bottom: 15px;
}

.ad-content {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto 20px;
}

.ad-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
}

.redirect-info {
    padding: 30px 20px;
    text-align: center;
}

.countdown {
    font-size: 20px;
    color: #007bff;
    font-weight: bold;
    margin-bottom: 20px;
    display: inline-block;
    padding: 8px 20px;
    border: 2px solid #007bff;
    border-radius: 30px;
    background-color: rgba(0, 123, 255, 0.05);
}

.redirect-text {
    font-size: 16px;
    color: #555;
    margin-bottom: 25px;
}

.redirect-btn {
    padding: 12px 30px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.redirect-btn:hover {
    background-color: #0056b3;
}

.redirect-btn:disabled {
    background-color: #6c757d;
    cursor: not-allowed;
}

.error-message {
    color: #dc3545;
    font-size: 14px;
    margin-top: 15px;
    padding: 10px;
    background-color: rgba(220, 53, 69, 0.1);
    border-radius: 6px;
}

/* 响应式设计 */
@media (max-width: 600px) {
    .ad-title {
        font-size: 20px;
    }
    .countdown {
        font-size: 18px;
        padding: 6px 16px;
    }
    .redirect-info {
        padding: 20px 15px;
    }
}