:root{--white:#fff;--gray:rgba(0,0,0,0.05);--red:#e81a35;--text-color:#222;--background-color:#fff;--hr-border-color:#ccc;--button-border-color:#666;--link-color:#0b96bd;--link-visited-color:#9a78da;--main-color:#0b96bd;--main-color-t:rgba(11,150,189,0.2);--nav-background-color:rgba(255,255,255,0.65);--nav-shadow-color:rgba(0,0,0,0.1);--div__background-image-gradation-top-color:rgba(255,255,255,1);--div__background-image-gradation-bottom-color:rgba(11,150,189,0.125);--height:2.5em;--width-set:11.5em;--margin-right:6px}.div__background-image-gradation{width:100%;height:100vh;position:fixed;z-index:-1;background-image: linear-gradient(180deg, var(--div__background-image-gradation-top-color) 25%, var(--div__background-image-gradation-bottom-color) 95%)}header{display:grid;place-content:center;place-items:center;width:100%;height:90vh;height:90svh;position:relative}header img{width:100%;height:100%;max-width:100%;max-height:90vh;max-height:90svh;object-fit:cover;object-position:center center;pointer-events:none;overflow:hidden}.animation__fade-In{opacity:0;animation:fade-In .75s linear 1s forwards}@keyframes fade-In{from{opacity:0}to{opacity:1}}header > div{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:var(--white)}.tate-gaki{writing-mode:vertical-rl}.yoko-gaki{writing-mode:horizontal-tb}header > div::before{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:75vw;height:75vw;max-width:400px;max-height:400px;border:solid 2px var(--white);border-radius:100%}nav{-webkit-backdrop-filter:unset;backdrop-filter:unset;background-color:unset;border:0}nav p{display:revert}nav.center p a{display:inline-block;padding:.7em .5em;text-decoration:underline;color:var(--link-color);letter-spacing:.1em;width:unset}.fix-nav{background-color:var(--nav-background-color);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}nav.center.fix-nav p{display:flex;justify-content:space-between}nav.center.fix-nav p a{padding:.7em 0;width:100%;color:var(--text-color);text-decoration:none}h1{white-space:nowrap;font-size:2.5em;font-family:serif;text-shadow:0 0 10px var(--main-color-t)}