:root{--red:#1F3A5F;--ink:#222;--mute:#6b7280;--rule:#e5e7eb;--bg:#f6f4f2}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 "Noto Sans TC","Microsoft JhengHei",sans-serif;padding-bottom:env(safe-area-inset-bottom)}
.top{display:flex;align-items:center;gap:10px;background:#fff;padding:12px 16px;border-bottom:1px solid var(--rule)}
.mark{background:var(--red);color:#fff;border-radius:6px;padding:2px 8px;letter-spacing:1px}.top span{font-weight:700;color:var(--red)}
main{max-width:480px;margin:0 auto;padding:16px}
footer{text-align:center;color:var(--mute);font-size:13px;padding:8px 16px 24px}
.card{background:#fff;border:1px solid var(--rule);border-radius:8px;padding:16px;margin-bottom:14px}
h1{font-size:20px;margin:0 0 12px;color:var(--red)}h2{font-size:16px;margin:0 0 8px}
label{display:block;font-weight:600;margin:12px 0 4px}
input{width:100%;padding:12px;border:1px solid #c9ced6;border-radius:6px;font-size:16px;background:#fff}
input:focus{outline:2px solid var(--red);outline-offset:-1px}
.btn{display:block;width:100%;min-height:46px;margin-top:12px;padding:10px;border:1px solid var(--red);border-radius:6px;background:var(--red);color:#fff;font:inherit;font-weight:600;cursor:pointer}
.btn.ghost{background:#fff;color:var(--red)}.btn:disabled{opacity:.55;cursor:wait}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:0 10px}
.link{display:block;margin:12px auto 0;background:none;border:0;color:var(--mute);font:inherit;text-decoration:underline;cursor:pointer}
.row{display:flex;justify-content:space-between;width:100%;padding:12px 0;background:none;border:0;border-top:1px solid var(--rule);font:inherit;cursor:pointer;text-align:left}
.row b{color:var(--red)}
.muted{color:var(--mute);font-size:14px}
.addr{font-family:Consolas,monospace;font-size:13px;word-break:break-all}
.copy{display:block;width:100%;padding:6px 0;background:none;border:0;text-align:left;color:inherit;cursor:pointer}
dl{display:grid;grid-template-columns:auto 1fr;gap:8px;margin:14px 0 0}dt{color:var(--mute)}dd{margin:0;text-align:right;font-weight:700}
.terms{padding-left:20px;margin:0}
.decoded{padding:10px 0;border-bottom:1px solid var(--rule)}
.kv{display:flex;justify-content:space-between;gap:16px;padding:3px 0}.kv span{color:var(--mute);flex:none}.kv b{word-break:break-all;text-align:right}
.msgbox{white-space:pre-wrap;word-break:break-all;background:var(--bg);padding:12px;border-radius:6px;font-size:14px}
.danger{color:#b3123b;font-weight:700}
.toast{position:fixed;left:16px;right:16px;bottom:24px;margin:0 auto;max-width:448px;background:#0a7a52;color:#fff;border-radius:6px;padding:12px 16px;z-index:50;box-shadow:0 8px 24px rgba(0,0,0,.2)}
.toast.bad{background:#b3123b}.toast.info{background:#39414d;bottom:84px}