:root{--paper:#f8f9f5;--ink:#182e29;--muted:#64736b;--line:#dfe6de;--green:#173e36;--lime:#e4f3b1;--white:#fff;--orange:#a95126;--radius:18px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}button,textarea,select{font:inherit}button,a,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}a:focus-visible,button:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #648d3e;outline-offset:4px}.shell{width:min(1180px,calc(100% - 80px));margin:0 auto}.site-header{min-height:96px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid 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