:root{--ink:#061019;--ink2:#0a1923;--paper:#edf5f3;--white:#fff;--mint:#64e8be;--mint2:#1ab888;--red:#ec3657;--blue:#438cf5;--line:rgba(149,181,190,.2);--muted:#9cb1b8}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--ink);color:var(--white);font-family:Arial,"Microsoft YaHei",sans-serif;letter-spacing:0;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}.page-progress{position:fixed;z-index:100;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,var(--mint),var(--white),var(--red));transform:scaleX(0);transform-origin:left}.pay-header{height:72px;padding:0 4.5vw;position:fixed;z-index:50;inset:0 0 auto;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(4,14,21,.8);backdrop-filter:blur(20px)}.pay-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800}.pay-brand small{font-size:9px}.pay-brand>b{padding-left:10px;border-left:1px solid 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