:root{--portal-max-width: 1320px;--portal-gutter: 24px;--portal-color-primary: #2989d8;--portal-color-primary-dark: #1e5799;--portal-color-accent: #207cca;--portal-color-text: #1a1a1a;--portal-color-text-muted: #5c6b7a;--portal-color-border: #e8ecf0;--portal-color-surface: #ffffff;--portal-color-surface-alt: #f4f6f8;--portal-color-hero: #0d0d0d;--portal-color-footer: #1a1a1a;--portal-header-height: auto;--portal-radius: 6px;--portal-radius-lg: 10px;--portal-shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--portal-shadow-md: 0 4px 20px rgba(0, 0, 0, .08);--portal-font: "Segoe UI", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif}body{font-family:var(--portal-font);color:var(--portal-color-text);background-color:var(--portal-color-surface-alt);-webkit-font-smoothing:antialiased}*{margin:0;padding:0;box-sizing:border-box}body{line-height:1.5}