*{box-sizing:border-box}html,body{color:#111827;background:#f7f8fa;margin:0;padding:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}.container{max-width:1080px;margin:0 auto;padding:24px}.card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:16px}