:root{color-scheme:dark;--bg:#111820;--panel:#1b2630;--line:#354450;--text:#edf3f6;--muted:#aabbc7;--accent:#b9e0bd}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}
main{max-width:540px;margin:auto;padding:26px 20px max(28px,env(safe-area-inset-bottom))}header{margin-bottom:24px}.emblem{font-size:36px}h1{font-size:30px;margin:8px 0}h2{font-size:21px;margin:0 0 14px}p{color:var(--muted);margin:10px 0 18px}section{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:22px;margin-bottom:18px}
label{display:block;margin:16px 0 6px}small{color:var(--muted);font-weight:normal}input{width:100%;min-height:46px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text);padding:10px 12px;font:inherit}input:focus,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}input[type=file]{font-size:14px}#new-key{font-family:monospace;font-size:13px}.check{display:flex;gap:10px;align-items:flex-start}.check input{width:20px;min-height:20px;margin-top:3px;flex-shrink:0}
button{width:100%;min-height:48px;margin-top:16px;border:0;border-radius:11px;background:var(--accent);color:#15291b;font:600 16px system-ui;cursor:pointer}.secondary{background:transparent;color:var(--text);border:1px solid var(--line)}.danger{background:#653639;color:#fff}button:disabled{opacity:.45;cursor:wait}details{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}summary{cursor:pointer}footer{color:var(--muted);font-size:13px;padding:14px 2px}.receipt{overflow-wrap:anywhere}#status{padding:12px 0;color:var(--accent)}[hidden]{display:none!important}
@media(max-width:360px){main{padding:18px 12px}section{padding:17px}}