@import url('https://fonts.googleapis.com/css2?family=Ma+Shan+Zheng&family=Zhi+Mang+Xing&display=swap');
@import url('https://fonts.googleapis.com/css?family=Abril+Fatface|Raleway:300,400,900');
  body {
    font-weight: 700;
    background-color: #212121;
    margin: 0;
    padding: 0;
    overflow: hidden;
  }
  body section canvas {
    width: 100vw;
    height: 100vh;
    display: block;
  }
  
  #ci-particles {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
  }
  
  #headline {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
    opacity: 0;
    pointer-events: none;
    white-space: nowrap;
    font-family: "Ma Shan Zheng", "Zhi Mang Xing", "KaiTi", "楷体", "STKaiti", cursive;
  }
/* Header */
.coidea-header {
    position: fixed;
    display: block;
    width: 96%;
    width: calc( 100% - 32px );
    height: 40px;
    margin: 0 auto;
    color: #3498db;
    text-align: center;
    top: 16px; right: 16px; left: 16px;
    z-index: 1000;
}

.coidea-header .coidea-links .coidea-icon-back {
    position: absolute;
    display: block;
    width: 24px;
    height: 24px;
    padding: 7px;
    color: rgba(255, 255, 255,0.75);
    font-size: 32px;
    line-height: 34px;
    font-weight: 900;
    font-family: 'Raleway', sans-serif;
    text-decoration: none;
    outline: 0px none;
    outline: 0px;
    transition: all .3s ease;
    top: 0px;
    left: 0px;
    z-index: 2;
}

.coidea-header .coidea-links .coidea-icon-back::before {
    content: '';
    position: absolute;
    display: block;
    width: 34px;
    height: 34px;
    top: 7px;
    left: 20px;
    border-radius: 8px;
    background-color: rgba(255, 255, 255,.35);
}

.coidea-header .coidea-links .coidea-icon-back:hover {
    color: rgba(255, 255, 255,1);
}

.coidea-header .coidea-links .coidea-icon-github {
    position: absolute;
    display: block;
    width: 24px;
    height: 24px;
    padding: 7px;
    color: rgba(255, 255, 255,0.75);
    font-size: 32px;
    line-height: 34px;
    font-weight: 900;
    font-family: 'Raleway', sans-serif;
    text-decoration: none;
    outline: 0px none;
    outline: 0px;
    transition: all .3s ease;
    top: 0px;
    right: 0px;
    z-index: 2;
}

.coidea-header .coidea-links .coidea-icon-github::before {
    content: '';
    position: absolute;
    display: block;
    width: 34px;
    height: 34px;
    top: 7px;
    right: 18px;
    border-radius: 8px;
    background-color: rgba(255, 255, 255,.35);
}

.coidea-header .coidea-links .coidea-icon-github:hover {
    color: rgba(255, 255, 255,1);
}

.coidea-header .coidea-links .coidea-header {
    font-family: 'Raleway', sans-serif;
    display: inline-block;
	font-size: 14px;
	font-weight: 300;
	margin: 0;
    padding: 17px 0;
    z-index: 1;
}

@media screen and (max-width: 768px) {
    .coidea-header .coidea-links .coidea-header {
        font-size: 12px; 
    }
    
    #headline {
        font-size: 6vw !important;
        line-height: 1.3;
    }
    
    #ci-particles {
        padding: 20px 10px;
    }
}

@media screen and (max-width: 480px) {
    #headline {
        font-size: 5vw !important;
        line-height: 1.4;
    }
    
    #ci-particles {
        padding: 15px 5px;
    }
}

@media screen and (max-width: 360px) {
    .coidea-header .coidea-links .coidea-header {
        font-size: 10px; 
    }
    
    #headline {
        font-size: 4.5vw !important;
        line-height: 1.5;
    }
    
    #ci-particles {
        padding: 10px 5px;
    }
}