:root{--fs-base: .875rem;--fs-md: 1rem;--fs-lg: 1.125rem;--fs-xl: 1.5rem;--radius: 12px;--portal-fg: #1a1a1a;--portal-muted: #5c5c5c;--portal-bg: #ffffff;--portal-line: #e3e3e3}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:var(--fs-md);color:var(--portal-fg);background:var(--portal-bg);-webkit-text-size-adjust:100%}.portal-page{max-width:44rem;margin:0 auto;padding:1.5rem 1rem 3rem}