:root{--bg:#101311;--surface:#191e1a;--line:#303932;--ink:#edf1e8;--muted:#aab5aa;--lime:#c6f36a;--paper:#f0f2eb;--dark:#18201b}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.8 'Microsoft YaHei',Arial,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--lime);outline-offset:5px}img{max-width:100%;display:block}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.25}h1{font-size:clamp(38px,5.2vw,74px);letter-spacing:-2px;font-weight:700}h2{font-size:clamp(28px,3.4vw,44px);letter-spacing:-1px}h3{font-size:22px}small{font-size:12px}.wrap{max-width:1320px;padding:0 44px;margin:auto}.site-header{position:sticky;top:0;z-index:20;border-bottom:1px solid 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