:root{--nav-height:4.12rem;--content-max:90rem;--page-gutter:clamp(1rem,4vw,4rem);--page-inline:max(var(--page-gutter),calc((100vw - var(--content-max)) / 2 + var(--page-gutter)));--paper:#ffffff;--paper-soft:#f7f8f6;--paper-deep:#ebeeea;--ink:#111415;--muted:#626b66;--rust:#3b7463;--rust-light:#7da18f;--moss:#163b33;--surface:var(--paper);--surface-muted:var(--paper-soft);--surface-strong:var(--paper-deep);--surface-inverse:var(--moss);--border:rgba(17,20,21,0.11);--border-strong:rgba(17,20,21,0.18);--text:var(--ink);--text-muted:var(--muted);--accent:var(--moss);--focus-ring:rgba(22,59,51,0.55);--font-body:"Aptos","Microsoft YaHei UI","Microsoft YaHei",sans-serif;--font-display:"STSong","SimSun","Songti SC",Georgia,serif;--font-heading:"Microsoft YaHei UI","Microsoft YaHei","PingFang SC","Noto Sans SC",sans-serif}*{box-sizing:border-box;padding:0;margin:0}html{scroll-behavior:smooth}body,html{min-height:100%}body{max-width:100vw;overflow-x:hidden;background:var(--paper);color:var(--ink);font-family:var(--font-body),"Noto Sans SC",sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}:focus-visible{outline:2px solid var(--focus-ring);outline-offset:3px}::selection{background:var(--ink);color:var(--paper)}@media (max-width:860px){:root{--nav-height:6.7rem}}