:root{--fg:#1a1a1a;--muted:#666;--border:#ddd;--accent:#1565c0;--bg:#fafafa}*{box-sizing:border-box}body,html{margin:0;padding:0;color:var(--fg);background:var(--bg);font-family:Arial,Microsoft JhengHei,PingFang TC,sans-serif;line-height:1.5}a{color:var(--accent)}.container{max-width:880px;margin:0 auto;padding:24px 16px}.appbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;background:#fff;border-bottom:1px solid var(--border);flex-wrap:wrap}.tag{display:inline-block;padding:2px 10px;border-radius:999px;background:var(--accent);color:#fff;font-size:13px}.card{background:#fff;border:1px solid var(--border);border-radius:8px;padding:16px;margin:12px 0}.muted{color:var(--muted);font-size:14px}.notice{background:#fff8e1;border-left:4px solid #ed6c02}.err,.notice{padding:10px 12px;border-radius:4px}.err{background:#fdecea;border-left:4px solid #c62828}input[type=email]{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:15px}button{margin-top:12px;padding:8px 16px;border:0;border-radius:6px;background:var(--accent);color:#fff;font-size:15px;cursor:pointer}