:root{--bg:#f7f8fb;--surface:#ffffff;--surface-2:#fbfcfe;--border:#e6e8f0;--border-strong:#d5d9e6;--text:#1b1d29;--text-2:#4a4f63;--dim:#7c8296;--accent:#3b5bdb;--accent-hover:#3451c7;--accent-soft:#eef1fd;--green:#0ca678;--green-soft:#e6f7f1;--amber:#e8590c;--amber-soft:#fdf0e7;--red:#e03131;--red-soft:#fdecec;--radius:14px;--shadow:0 1px 2px rgba(27,29,41,0.04),0 4px 16px rgba(27,29,41,0.04)}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100vh}a{color:var(--accent);text-decoration:none}.wrap{max-width:880px;margin:0 auto;padding:0 16px 72px}.topbar{background:rgba(255,255,255,.9);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid 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