:root{color-scheme:light;--bg: #f6f8fb;--bg-muted: #eef2f8;--panel: #ffffff;--panel-strong: #ffffff;--line: #d9e0ea;--line-strong: #c8d2df;--text: #0f1723;--muted: #5a6678;--primary: #1f6feb;--primary-strong: #1a5ecc;--accent: #0b5fd7;--shadow: 0 6px 24px rgba(15, 23, 35, .06);--radius-xl: 22px;--radius-lg: 16px;--radius-md: 12px;--space-1: 8px;--space-2: 12px;--space-3: 16px;--space-4: 20px;--space-5: 24px;--text-sm: 13px;--text-md: 14px;--text-lg: 16px;--text-xl: 20px}*{box-sizing:border-box}html,body,#app{min-height:100%}body{margin:0;font-family:IBM Plex Sans,PingFang SC,Microsoft YaHei,sans-serif;font-size:var(--text-md);line-height:1.5;background:linear-gradient(180deg,#f8fafe,#f3f6fb);color:var(--text)}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}.app-shell{display:grid;grid-template-columns:290px 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