:root{--bg: #f3f2f1;--surface: #ffffff;--surface2: #f7f8fb;--border: #e2e6ed;--text: #262626;--muted: #666666;--accent: #012169;--accent2: #d95319;--blue: #0072bd;--purple: #7e2f8e;--font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;min-height:100vh}a{color:inherit;text-decoration:none}.layout{display:flex;flex-direction:column;min-height:100vh;background:var(--bg)}.topbar{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:0 1px 3px #00000008}.topbar-inner{width:100%;max-width:1360px;height:62px;margin:0 auto;padding:0 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