:root{color-scheme:light;font-family:system-ui,sans-serif;color:#272c39;background:#edf7ff}body{max-width:680px;margin:48px auto;padding:0 22px;line-height:1.6}h1{line-height:1.2}a{color:#135ba0}nav{display:flex;gap:20px;flex-wrap:wrap}main{background:white;border:1px solid #cbddec;border-radius:18px;padding:28px;margin:24px 0}button{display:block;background:#12648a;color:white;border:0;border-radius:8px;padding:13px 18px;margin:12px 0;font:inherit;cursor:pointer}button:disabled{opacity:.5;cursor:default}.danger{background:#a72a32}small,footer{color:#4b5967}#status{white-space:pre-wrap} [hidden]{display:none!important}