:root{--indigo: #4f46e5;--indigo-d: #4338ca;--ink: #18181b;--muted: #71717a;--bg: #f4f4f5;--card: #fff;--border: #e4e4e7;--ok: #15803d;--okbg: #dcfce7}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.55}.wrap{max-width:560px;margin:0 auto;padding:20px 16px 48px}header{text-align:center;padding:18px 0 8px}.eyebrow{font-size:12px;letter-spacing:1px;color:var(--indigo);font-weight:700;text-transform:uppercase}h1{font-size:26px;font-weight:700;margin:6px 0 4px;line-height:1.15}.meta{font-size:14px;color:var(--muted)}.intro{text-align:center;font-size:15px;color:#3f3f46;margin:14px 4px 22px}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px;margin-bottom:14px}.card h2{font-size:18px;font-weight:700;margin-bottom:2px}.card .desc{font-size:14px;color:var(--muted);margin-bottom:12px}.price{font-size:20px;font-weight:700;color:var(--indigo)}.row{display:flex;align-items:center;justify-content:space-between;gap:12px}.btn{font:inherit;font-weight:700;font-size:15px;border:none;border-radius:10px;padding:11px 18px;cursor:pointer}.btn-primary{background:var(--indigo);color:#fff}.btn-primary:hover{background:var(--indigo-d)}.btn:disabled{opacity:.6;cursor:progress}.btn-block{width:100%;margin-top:4px}.badge{display:inline-block;background:#ecfdf5;color:var(--ok);font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px}form[hidden]{display:none}form{margin-top:16px;border-top:1px solid var(--border);padding-top:16px}label{display:block;font-size:13px;font-weight:500;margin:10px 0 4px}input{width:100%;font:inherit;font-size:16px;padding:11px 12px;border:1px solid var(--border);border-radius:10px;background:#fff}input:focus{outline:none;border-color:var(--indigo)}.note{font-size:13px;color:var(--muted);margin-top:8px}.error{color:#b91c1c;font-size:14px;margin-top:10px;font-weight:500}.error[hidden],.success[hidden]{display:none}.success{background:var(--okbg);color:var(--ok);border-radius:10px;padding:12px;font-weight:500;font-size:14px;margin-top:12px;text-align:center}.donate{background:var(--ink);color:#fff;text-align:center}.donate h2{color:#fff}.donate .desc{color:#a1a1aa}#qr{display:flex;justify-content:center;margin:16px 0}#qr canvas{border-radius:10px;background:#fff;padding:10px}.pix-code{font-size:12px;word-break:break-all;background:#27272a;color:#d4d4d8;border-radius:8px;padding:10px;font-family:monospace;margin-bottom:10px}footer{text-align:center;font-size:12px;color:var(--muted);margin-top:30px;line-height:1.7}footer a{color:var(--indigo);text-decoration:none;font-weight:500}