:root{color-scheme:dark;--bg:#0c1317;--panel:#142026;--line:#26363f;--text:#e6edf0;--muted:#93a5ae;--green:#25d69c}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 system-ui,sans-serif}main{max-width:1140px;margin:auto;padding:40px 24px}header{display:flex;align-items:center;gap:18px;margin-bottom:32px}.brand{padding:12px;background:#173f34;border-radius:16px;color:var(--green);font-size:21px;font-weight:800}.brand span{color:#d9f7ec;font-size:12px;margin-left:3px}h1{margin:0;font-size:26px;letter-spacing:-.6px}header p{margin:2px 0;color:var(--muted)}h2{font-size:18px;margin:0 0 20px}.badge{margin-left:auto;border:1px solid var(--line);padding:7px 12px;border-radius:30px;color:var(--muted);white-space:nowrap}.badge.online{color:var(--green);border-color:#226848}.keybar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:18px;background:var(--panel);border:1px solid var(--line);border-radius:14px}.keybar label{margin:0}.keybar input{flex:1;min-width:180px}input,textarea{width:100%;border:1px solid var(--line);border-radius:9px;padding:12px;background:#0d181e;color:var(--text);font:inherit;outline:none}input:focus,textarea:focus{border-color:var(--green)}input[type=file]{font-size:13px}label{display:block;margin:14px 0 7px;font-size:14px;color:#cedbe0}button{border:0;border-radius:9px;padding:12px 18px;background:var(--green);color:#072d22;font:600 14px system-ui;cursor:pointer}button:hover{filter:brightness(1.1)}button:disabled{opacity:.5;cursor:wait}.secondary{background:#283943;color:var(--text)}.danger{background:#452d33;color:#ffb6bd}.grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:24px 0}.card{padding:26px;border-radius:16px;background:var(--panel);border:1px solid var(--line)}.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.muted,#notice{color:var(--muted);font-size:13px}#notice.error{color:#ffb6bd}#qrbox{min-height:350px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;border:1px dashed #354b58;border-radius:14px;background:#101a21;padding:15px}#qr{width:min(100%,320px);background:white;border-radius:8px}#qr[hidden]{display:none}#qrhint{color:var(--muted);max-width:300px}.steps{font-size:14px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}#send{width:100%;margin-top:16px}pre{background:#0b151a;border:1px solid var(--line);border-radius:10px;padding:16px;white-space:pre-wrap;overflow-wrap:anywhere;font:12px/1.7 ui-monospace,monospace}#result{max-height:260px;overflow:auto;margin-top:22px}code{font-family:ui-monospace,monospace;color:#9aebc9}.endpoint{display:flex;align-items:center;gap:16px}.endpoint span{font-size:12px;font-weight:800;color:var(--green);background:#173c30;padding:5px 10px;border-radius:5px}footer{text-align:center;color:#607984;font-size:12px;padding:28px 0 0}@media(max-width:760px){main{padding:24px 16px}.grid{grid-template-columns:1fr}.card{padding:20px}header{flex-wrap:wrap}h1{font-size:21px}.badge{margin-left:0}.keybar label{width:100%}.keybar input{width:100%;flex-basis:100%}}