:root{--bg:#F7FBF4;--deep:#E8F3E4;--surface:#FFFEFA;--soft:#FFF3F0;--ink:#1E3A24;--text:#2A2A2A;--muted:#5A6358;--aux:#7A8476;--red:#E23C3C;--red-dark:#B91C1C;--green:#2D6A3E;--green-light:#7BC47D;--border:rgba(30,58,36,.14);--shadow:0 14px 36px rgba(30,58,36,.10);--max:1160px;--header-h:64px;--rail-w:88px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}body.panel-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.shell{width:min(var(--max),calc(100% - 32px));margin:0 auto}.top-shell{width:min(1440px,calc(100% - 24px));margin:0 auto}.skip-link{position:fixed;left:16px;top:-60px;z-index:9999;background:#fff;color:var(--ink);padding:10px 14px}.skip-link:focus{top:10px}.site-header{position:fixed;z-index:1000;inset:0 0 auto 0;box-shadow:0 5px 24px 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