:root{--bg: #faf8f5;--fg: #2b2b30;--muted: #8a8a92;--accent: #c0392b;--panel: #ffffff;--border: #e6e2dc;--highlight: #ffe9a8;--reader-font: 18px;--reader-line-height: 1.9;color-scheme:light dark}@media (prefers-color-scheme: dark){:root{--bg: #1b1b1f;--fg: #e8e6e3;--muted: #8a8a92;--panel: #26262b;--border: #3a3a42;--highlight: #5c4a1a}}*{box-sizing:border-box}[hidden]{display:none!important}html,body{margin:0;height:100%;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Noto Sans SC,sans-serif;-webkit-font-smoothing:antialiased}#app{height:100%;display:flex;flex-direction:column}.btn{border:1px solid var(--border);background:var(--panel);color:var(--fg);border-radius:8px;padding:6px 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