:root{--ink:#17282b;--muted:#5d6969;--paper:#f7f8f3;--line:#d9dfd9;--sea:#176c65;--lime:#deecb3;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:'DM Sans',-apple-system,BlinkMacSystemFont,'Hiragino Kaku Gothic ProN','Yu Gothic',Meiryo,sans-serif;line-height:1.7}a{color:inherit}button,select{font:inherit}.shell{width:min(1160px,calc(100% - 40px));margin:auto}.skip{position:absolute;top:-60px;left:10px;background:#fff;padding:8px;z-index:5}.skip:focus{top:10px}.site-head{background:rgba(247,248,243,.96);border-bottom:1px solid 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