:root {
    --bg-color: #f3f4f6;
    --card-radius: 16px;
    --primary-color: #10b981;
    --text-main: #1f2937;
    --text-secondary: #6b7280;
}

body { 
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; 
    background-color: var(--bg-color); 
    margin: 0; 
    padding: 0; 
    color: var(--text-main); 
}

/* 顶部导航栏 */
.navbar {
    background: #ffffff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    padding: 15px 0;
    margin-bottom: 30px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 主容器 */
.container { 
    max-width: 1200px; 
    margin: 0 auto; 
    padding: 0 20px 40px 20px; 
}

/* 数字字体优化 */
.number-font {
    font-family: 'DIN Alternate', 'Monaco', 'Consolas', monospace;
    font-weight: 600;
}

/* 隐藏态样式 */
.blur-text { 
    filter: blur(4px); 
    user-select: none; 
    opacity: 0.5; 
}