:root{--ink:#262435;--muted:#696777;--accent:#6651cf;--paper:#fbfbfd;--rule:#e2ddf4;color-scheme:light;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper)}
*{box-sizing:border-box}body{margin:0;line-height:1.55;background:var(--paper)}main{max-width:560px;margin:48px auto;padding:0 20px}
header{display:flex;align-items:center;justify-content:space-between;gap:16px}h1{font-size:31px;font-weight:800;letter-spacing:-1.4px}h1 span{color:var(--accent)}
header a{color:var(--accent);font-weight:600;text-decoration:none;padding:10px 0}header a:hover{text-decoration:underline}
section{border:1px solid var(--rule);border-radius:24px;padding:12px;margin:24px 0;background:#f6f4fc}h2{font-size:22px;font-weight:600;margin:8px 12px 12px}
p{margin:0 12px 16px}.origin{color:var(--muted);font-size:14px}label{display:block;margin:0 12px 10px;color:var(--muted)}
input{display:block;width:100%;font:inherit;padding:16px;border:1px solid #a39ab8;border-radius:12px;margin-bottom:16px;background:#fff;color:var(--ink);min-height:60px}
button{width:100%;min-height:60px;padding:16px 24px;border:1px solid var(--accent);border-radius:12px;background:var(--accent);color:#fff;font:inherit;font-size:16px;font-weight:600;cursor:pointer}
button:hover{background:#5140af}button:disabled{opacity:.5;cursor:wait}:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
#message{border-radius:12px;padding:12px 16px;margin:0 0 16px}#message.error{color:#a12739;background:#fff1f3;border:1px solid #e2b6bd}#message.ok{color:#1d6b3e;background:#eefaf2;border:1px solid #b7dcc4}
@media(max-width:480px){main{margin:24px auto;padding:0 12px}h1{font-size:28px}}