:root{--ink:#171820;--muted:#9697a0;--line:#e7e7eb;--paper:#fff;--soft:#f6f6f8;--violet:#5b5ce2;--navy:#191a2c;--green:#42c98b;--shadow:0 28px 90px rgba(20,22,40,.14)}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Noto Sans SC",sans-serif;color:var(--ink)}button,input,textarea{font:inherit}button,a{cursor:pointer}.cosmos{position:fixed;inset:0;background:#f4f3f7;overflow:hidden;z-index:-1}.cosmos:before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 16% 20%,rgba(91,92,226,.28) 0 1px,transparent 1.6px),radial-gradient(circle at 82% 30%,rgba(91,92,226,.22) 0 1px,transparent 1.4px);background-size:80px 80px,110px 110px;opacity:.35}.cosmos i{position:absolute;border-radius:50%;filter:blur(3px)}.cosmos i:nth-child(1){width:520px;height:520px;background:rgba(105,94,235,.17);left:-180px;top:-220px}.cosmos 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