:root{--bg:#071f23;--paper:#ffffffc7;--ink:#0b262b;--muted:#58706f;--line:#ffffff38;--teal:#0f8b7e;--cyan:#21b7b8;--lime:#7cff67;--shadow:0 28px 90px #12575024}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--ink);background:radial-gradient(circle at 6% 8%,#19706ca3,#0000 26%),linear-gradient(135deg,#0a3b3d 0%,#12625e 48%,#225872 100%);margin:0;font-family:Microsoft YaHei,PingFang SC,Arial,sans-serif;line-height:1.65;overflow-x:hidden}body:before{content:"";z-index:-3;opacity:.18;pointer-events:none;background-color:#0000;background-image:linear-gradient(#ffffff0f 1px,#0000 1px),linear-gradient(90deg,#ffffff0d 1px,#0000 1px);background-position:0 0,0 0;background-repeat:repeat,repeat;background-size:72px 72px;background-attachment:scroll,scroll;background-origin:padding-box,padding-box;background-clip:border-box,border-box;position:fixed;inset:0}a{color:inherit;text-decoration:none}button{font:inherit}.shell{z-index:2;width:min(1180px,100% - 32px);margin:0 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