:root{--bg: #f5f7fb;--surface: #ffffff;--surface-2: #f8fafc;--border: #e3e8ef;--text: #1f2937;--text-2: #64748b;--muted: #94a3b8;--primary: #2563eb;--primary-dark: #1d4ed8;--primary-soft: #eff6ff;--success: #16a34a;--success-soft: #ecfdf5;--warn: #d97706;--warn-soft: #fffbeb;--danger: #dc2626;--danger-soft: #fef2f2;--info: #0891b2;--info-soft: #ecfeff;--radius: 12px;--shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 4px 14px rgba(16, 24, 40, .06)}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;font-size:15px;line-height:1.6;-webkit-text-size-adjust:100%}.topbar{position:sticky;top:0;z-index:50;background:#ffffffeb;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.topbar-inner{max-width:1100px;margin:0 auto;padding:10px 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