:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--canvas:#fff;--paper:#fff;--surface:#f7f8fb;--ink:#242938;--muted:#697386;--line:#e7eaf0;--accent:#5952c5;--tint:#f0effb;color:var(--ink);background:var(--canvas);font-synthesis:none;-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{margin:0;font-size:15px;line-height:1.7}a{color:inherit;text-decoration:none}button,input,select{font:inherit}a,button{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}:focus-visible{outline:3px solid var(--accent);outline-offset:4px}::selection{background:#e1def9}h1,h2,h3,p{margin:0}h1{letter-spacing:-.045em;font-size:clamp(26px,3vw,32px);font-weight:650;line-height:1.4}h2{letter-spacing:-.025em;font-size:21px;line-height:1.5}h2,h3{font-weight:600}h3{font-size:18px;line-height:1.6}.workspace{grid-template-columns:208px minmax(0,1fr);min-height:100dvh;display:grid}.reading-main{width:100%;min-width:0;max-width:1280px;margin-inline:auto;padding:46px clamp(24px,4vw,64px) 88px}.page-header{justify-content:space-between;align-items:center;gap:20px;margin-bottom:38px;display:flex}.page-subtitle{color:var(--muted);margin-top:9px;font-size:13px;line-height:1.8}.quiet-button{border:1px solid var(--line);background:var(--paper);min-height:38px;color:var(--ink);white-space:nowrap;border-radius:9px;justify-content:center;align-items:center;padding:8px 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