:root{--bg: #f5f6f8;--card: #ffffff;--border: #e3e6ea;--border-strong: #cfd4d9;--text: #1f2328;--muted: #6b7280;--primary: #1d4ed8;--primary-soft: #eaf0fe;--ok: #15803d;--ok-soft: #e8f5ec;--warn: #b45309;--warn-soft: #fdf3e6;--danger: #b91c1c;--danger-soft: #fdecec;--radius: 10px;--shadow: 0 1px 2px rgba(16, 24, 40, .05)}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Microsoft YaHei,PingFang SC,Hiragino Sans GB,-apple-system,Segoe UI,sans-serif;font-size:14px;line-height:1.6}button{font-family:inherit;font-size:13px;cursor:pointer}input,select{font-family:inherit;font-size:13px;color:var(--text)}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}.header-inner{max-width:1280px;margin:0 auto;padding:14px 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