:root{--canvas:#f4f6fa;--surface:#fff;--ink:#17243a;--muted:#657188;--line:#e2e7f0;--brand:#15448f;--brand-soft:#edf3fd;--success:#126448;--warning:#8a5512;--radius:12px;--shadow:0 3px 16px #1c365608}*{box-sizing:border-box}body{margin:0;background:var(--canvas);font:14px/1.65 "Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:var(--ink)}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:3px}:focus-visible{outline:3px solid #6296ee}button{cursor:pointer;border:1px solid var(--line);background:white;border-radius:8px;padding:8px 14px;color:var(--ink)}button:hover{background:var(--brand-soft);border-color:#aac0e3}button:disabled{opacity:.55;cursor:not-allowed}.primary{background:var(--brand);color:#fff;border-color:var(--brand)}.primary:hover{background:#10386f;color:#fff}a{color:var(--brand)}.skip{position:absolute;top:-80px;z-index:10;background:white;padding:12px}.skip:focus{top:0}.shell{display:grid;grid-template-columns:224px 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