:root{color-scheme:light;--ink: #1d1d1f;--ink-soft: #333337;--muted: #6e6e73;--muted-strong: #515154;--canvas: #f5f5f7;--surface: #ffffff;--surface-soft: #fbfbfd;--line: #d7d7dc;--line-soft: #ececf0;--green: #0f513f;--green-soft: #eef7f3;--gold: #b87918;--gold-soft: #fff7e8;--blue: #0066cc;--blue-soft: #eef6ff;--shadow: 0 24px 80px rgba(0, 0, 0, .08);--shadow-soft: 0 14px 42px rgba(0, 0, 0, .055)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--canvas);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans CJK SC,sans-serif;line-height:1.6;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}a{color:inherit;text-underline-offset:4px}img{display:block;max-width:100%}h1,h2,h3,p{margin-top:0}h1,h2,h3{letter-spacing:0}main{overflow:hidden}.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:56px;padding:0 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