:root{--bg:#fff;--panel:#f7f8fa;--text:#20242b;--muted:#7b818c;--border:#e9ebef;--accent:#4d55d8;--tint:#eeefff;--green:#398a72}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}body.dark{--bg:#17191f;--panel:#1e2129;--text:#e7e9ef;--muted:#a0a6b2;--border:#303440;--accent:#a4a8ff;--tint:#2c2c48;--green:#85cbb1}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,textarea,select{outline-offset:4px}button{cursor:pointer}header{height:76px;border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 36px;gap:24px;position:fixed;inset:0 0 auto;background:var(--bg);z-index:10}.brand{display:flex;align-items:center;gap:12px;width:254px;flex-shrink:0}.brand b{font-size:21px;letter-spacing:-.6px}.brand b span{color:var(--muted);font-weight:400}.logo{background:var(--accent);color:var(--bg);width:35px;height:35px;border-radius:10px;display:grid;place-items:center;font:italic bold 27px Georgia}header nav{display:flex;gap:34px;flex:1;height:100%;align-items:center}header nav a{height:100%;display:flex;align-items:center;font-size:14px;border-bottom:2px solid transparent}header nav a.active{color:var(--accent);border-color:var(--accent)}.icon{border:0;background:transparent;color:var(--text);font-size:22px}.sidebar{position:fixed;top:76px;bottom:0;left:0;width:264px;padding:32px 22px 100px;border-right:1px solid var(--border);overflow:auto;background:var(--panel)}.side-title{font-weight:600;font-size:14px;padding:0 12px 24px;display:flex;justify-content:space-between}.side-title span,.side-group span{color:var(--muted);font:12px monospace}.side-link{display:flex;align-items:center;gap:12px;padding:9px 12px;border-radius:6px;font-size:14px}.side-link.active{background:var(--tint);color:var(--accent);font-weight:600}.side-group{font-size:12px;color:var(--muted);margin:30px 12px 10px;display:flex;justify-content:space-between;letter-spacing:1px}.children{margin:4px 0 16px 21px;padding-left:20px;border-left:1px solid var(--border)}.children a{display:block;font-size:13px;padding:6px 0;color:var(--muted)}.side-bottom{position:fixed;bottom:0;left:0;width:263px;background:var(--panel);border-top:1px solid var(--border);display:flex;gap:10px;padding:21px}.avatar{width:34px;height:34px;border:1px solid var(--border);border-radius:50%;display:grid;place-items:center;font-family:Georgia}.side-bottom b{font-size:13px}.side-bottom small{display:block;font-size:10px;color:var(--muted)}main{margin:76px 224px 0 264px;padding:36px 48px 70px;max-width:1200px;min-height:calc(100vh - 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