:root{font:16px/1.6 system-ui;color:#17212b;background:#f5f7f9;color-scheme:light}*{box-sizing:border-box}main{max-width:860px;margin:auto;padding:32px 20px 64px}a{color:#1759a8}h1{font-size:clamp(2rem,6vw,3rem);line-height:1.15}section{background:white;border:1px solid #dce2e8;border-radius:18px;padding:24px;margin:20px 0}label{display:block}select{width:100%;margin:8px 0 12px;padding:12px;background:white;border:1px solid #738398;border-radius:8px;font:inherit}button{min-height:44px;margin:12px 0;padding:10px 18px;border:0;border-radius:9px;background:#17212b;color:white;font:inherit;cursor:pointer}button:disabled{opacity:.5;cursor:default}:focus-visible{outline:3px solid #2779ce;outline-offset:3px}pre{white-space:pre-wrap;overflow-wrap:anywhere;max-height:360px;overflow:auto;padding:16px;background:#f5f7f9;font:14px/1.6 monospace}input{width:20px;height:20px}ul{padding:0;list-style:none}li{padding:16px 0;border-top:1px solid #e1e6ec;overflow-wrap:anywhere}footer,#version{color:#536172;font-size:.9rem}#status{padding:12px 16px;background:#e9eff6;border-radius:10px}@media(max-width:480px){section{padding:18px}button{width:100%}}