:root{color:#243447;background:#f7fafc;font-family:PingFang SC,Hiragino Sans,Microsoft YaHei,system-ui,sans-serif;font-size:16px;--navy: #5d7893;--blue: #6d93b8;--red: #d96c75;--gold: #e8c872;--green: #7bae9d;--ink: #243447;--muted: #758597;--line: #dfe8ef;--panel: #ffffff;--soft-blue: #eef5fa;--soft-red: #fcecef;--soft-green: #eaf4f1;--soft-gold: #fff4d7}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 10% 0%,rgba(217,108,117,.1),transparent 28rem),radial-gradient(circle at 95% 10%,rgba(109,147,184,.14),transparent 26rem),linear-gradient(180deg,#fbfcfd,#f7fafc)}button,input,select,textarea{font:inherit}.shell{width:min(1040px,calc(100vw - 28px));margin:0 auto;padding:18px 0 96px}.wide-shell{width:min(1440px,calc(100vw - 24px))}.topbar{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"title language" "title 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