:root{--color-bg: #f7f8fa;--color-surface: #ffffff;--color-border: #e2e5ea;--color-text: #1a1d23;--color-text-secondary: #666e7d;--color-primary: #2757e8;--color-primary-hover: #1d45c4;--color-danger: #d92d20;--color-success: #12805c;--color-warning: #b25e09;--radius: 10px;--shadow-sm: 0 1px 2px rgba(16, 24, 40, .06);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--color-bg);color:var(--color-text)}a{color:var(--color-primary)}h1,h2,h3{margin:0 0 .5em;font-weight:600}.app-shell{display:flex;flex-direction:column;min-height:100%}.topbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px 24px;padding:10px 20px;min-height:56px;background:var(--color-surface);border-bottom:1px solid 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