:root{--ink: #111111;--text-2: #555555;--text-3: #777777;--text-4: #8e8e8e;--bg: #ffffff;--rule: #c9c9c9;--scrim: rgb(0 0 0 / .52);--shadow: rgb(0 0 0 / .14);--font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;--w-regular: 400;--w-medium: 500;--w-semibold: 600;--nav-h: 72px;--pad-x: 16px;--col: 326px;--foot-pt: 64px;--foot-pb: 65px;--foot-gap: 22px}@media(min-width:768px){:root{--pad-x: 32px;--col: 760px;--foot-pt: 54px;--foot-pb: 53px;--foot-gap: 21px}}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;min-height:100dvh;display:flex;flex-direction:column;background:var(--bg);color:var(--ink);font-family:var(--font)}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:.25em}main{flex:1 0 auto;display:flex;flex-direction:column;justify-content:center}main.is-long{justify-content:flex-start}.col{width:min(var(--col),100% - 2 * 32px);margin-inline:auto}:focus-visible{outline:2px 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