:root{--paper:#F6F1EA;--deep:#EFE6DA;--card:#FFFCF7;--ink:#161410;--text:#2A2622;--muted:#5C564E;--soft:#7A746C;--orange:#FF7A1A;--orange-dark:#C85A00;--line:rgba(22,20,16,.14);--shadow:0 14px 36px rgba(22,20,16,.12);--max:1120px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--text);font-family:Arial,"Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.wrap{width:min(var(--max),calc(100% - 32px));margin:auto}.site-head{position:fixed;inset:0 0 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