/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    min-height: 100vh;
    overflow-x: hidden;
}

/* 开始页面样式 */
.start-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
}

.start-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.start-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 60px 50px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    max-width: 500px;
    width: 90%;
    position: relative;
    z-index: 1;
}

.logo-section {
    margin-bottom: 40px;
}

.game-title {
    font-size: 72px;
    font-weight: 800;
    color: #667eea;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.game-subtitle {
    font-size: 18px;
    color: #666;
    font-weight: 300;
}

.game-description {
    margin-bottom: 40px;
    text-align: left;
}

.game-description h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

.game-description ul {
    list-style: none;
    padding: 0;
}

.game-description li {
    padding: 8px 0;
    color: #555;
    position: relative;
    padding-left: 25px;
}

.game-description li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: #667eea;
    font-size: 12px;
}

.start-buttons {
    margin-bottom: 30px;
}

.primary-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    margin: 10px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.secondary-btn {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
    padding: 13px 40px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    margin: 10px;
    transition: all 0.3s ease;
}

.secondary-btn:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

.footer-info {
    color: #888;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .start-container {
        padding: 40px 30px;
        margin: 20px;
    }
    
    .game-title {
        font-size: 56px;
    }
    
    .primary-btn, .secondary-btn {
        width: 100%;
        margin: 5px 0;
    }
}