:root{--paper:#F6F2FA;--deep:#E7DDF3;--surface:#FFFCFE;--night:#12081C;--ink:#160C24;--text:#2A2038;--muted:#6A5A80;--soft:#8A7A9A;--grape:#6B3FA0;--violet:#9B6DDC;--mist:#D7C6F0;--amber:#D4A017;--border:rgba(22,12,36,.12);--shadow:0 16px 40px rgba(18,8,28,.12);--header-h:64px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.75;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}img{display:block;max-width:100%}.shell{width:min(1180px,calc(100% - 32px));margin:0 auto}.site-header{position:fixed;inset:0 0 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