:root{--bg:#0f1220;--card:#191d2e;--fg:#e7e9f2;--muted:#9aa0b8;--accent:#5b8cff;--accent-2:#3fbf7f;--border:#2a2f45}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.container{max-width:520px;margin:0 auto;padding:48px 20px}h1{font-size:22px;margin:0 0 4px}.sub{color:var(--muted);margin:0 0 24px;font-size:14px}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px}label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}input{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--border);background:#11142099;color:var(--fg);font-size:15px;outline:none}input:focus{border-color:var(--accent)}button{width:100%;margin-top:14px;padding:12px 14px;border-radius:10px;border:0;background:var(--accent);color:#fff;font-size:15px;font-weight:600;cursor:pointer}button:disabled{opacity:.5;cursor:default}.plan{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border:1px solid var(--border);border-radius:10px;margin-bottom:10px;cursor:pointer;background:#11142055}.plan:hover{border-color:var(--accent)}.plan .name{font-weight:600}.plan .meta{color:var(--muted);font-size:13px}.price{font-size:18px;font-weight:700}.error{color:#ff7a7a;margin-top:12px}.error,.muted{font-size:13px}.muted{color:var(--muted)}.ok{color:var(--accent-2);font-weight:600}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;word-break:break-all;white-space:pre-wrap;background:#0c0f1a;border:1px solid var(--border);border-radius:8px;padding:12px;margin-top:12px}.link,.mono{color:var(--muted)}.link{background:none;width:auto;margin-top:16px;padding:0;font-weight:400;text-decoration:underline}