:root{--banner-preview-bg:#fff4ce;--banner-preview-fg:#4a3b00;--banner-migration-bg:#fde7e9;--banner-migration-fg:#5c0b14;font-family:system-ui,-apple-system,PingFang SC,Microsoft YaHei,sans-serif}body{margin:0}.site-banners{z-index:100;position:sticky;top:0}.banner{flex-wrap:wrap;align-items:center;gap:12px;padding:8px 16px;font-size:14px;line-height:1.5;display:flex}.banner__text{overflow-wrap:anywhere;flex:auto;min-width:0}.banner--preview{background:var(--banner-preview-bg);color:var(--banner-preview-fg)}.banner--migration{background:var(--banner-migration-bg);color:var(--banner-migration-fg)}.app-main{padding:16px}.page-title{margin:0;font-size:20px}.boot-message{padding:24px;font-size:16px}