:root{--text:#1a1a1a;--muted:#4b5563;--bg:#f7f8fa;--surface:#fff;--border:#d1d5db;--primary:#1d4ed8;--primary-dark:#1e3a8a;--success:#15803d;--success-bg:#f0fdf4;--danger:#b91c1c;--danger-bg:#fef2f2;--focus:#93c5fd}*{box-sizing:border-box}html{font-size:20px}body{color:var(--text);background:var(--bg);margin:0;font-family:-apple-system,Segoe UI,Noto Sans TC,Roboto,sans-serif;line-height:1.5}#root{max-width:640px;min-height:100svh;margin:0 auto;padding:24px 20px 60px}h1{margin:0 0 8px;font-size:2rem}h2{margin:0 0 16px;font-size:1.6rem}p{margin:0 0 12px}.muted{color:var(--muted);font-size:1rem}.field{text-align:left;margin-bottom:24px}.field label{color:var(--text);margin-bottom:10px;font-size:1.4rem;font-weight:700;display:block}.field input,.field select,.field textarea{border:2px solid var(--border);background:var(--surface);width:100%;min-height:56px;color:var(--text);border-radius:10px;padding:12px 14px;font-family:inherit;font-size:1.4rem}.field input:focus,.field select:focus,.field textarea:focus{outline:4px solid var(--focus);outline-offset:1px;border-color:var(--primary)}.field textarea{resize:vertical;min-height:120px}.field-error{color:var(--danger);margin-top:8px;font-size:1.1rem;font-weight:700;display:block}button,.btn{cursor:pointer;background:var(--primary);color:#fff;border:none;border-radius:12px;width:100%;min-height:64px;margin-bottom:16px;padding:14px 20px;font-size:1.5rem;font-weight:700;display:block}button:active{background:var(--primary-dark)}button:disabled{background:var(--border);color:var(--muted);cursor:not-allowed}button.secondary{background:var(--surface);color:var(--primary);border:2px solid var(--primary)}.banner{border-radius:10px;margin-bottom:20px;padding:16px;font-size:1.2rem;font-weight:700}.banner.error{background:var(--danger-bg);color:var(--danger)}.banner.success{background:var(--success-bg);color:var(--success)}.tracking-code{letter-spacing:1px;text-align:center;background:var(--surface);border:3px solid var(--primary);word-break:break-all;border-radius:14px;margin-bottom:20px;padding:16px;font-size:2.4rem;font-weight:800}.qr-wrap{text-align:center;margin-bottom:24px}.qr-wrap img{border:8px solid #fff;width:220px;height:220px;box-shadow:0 2px 10px #0000001f}.history-item{background:var(--surface);border:2px solid var(--border);border-radius:12px;margin-bottom:14px;padding:14px 16px;font-size:1.15rem}.history-item .status{border-radius:999px;padding:2px 10px;font-size:1rem;font-weight:700;display:inline-block}.history-item .status.pending{color:#854d0e;background:#fef9c3}.history-item .status.confirmed{background:var(--success-bg);color:var(--success)}.field label.photo-dropzone{cursor:pointer;border:3px dashed var(--border);background:var(--surface);text-align:center;min-height:160px;color:var(--muted);border-radius:14px;flex-direction:column;justify-content:center;align-items:center;gap:6px;margin-bottom:0;padding:20px;font-weight:400;display:flex}.field label.photo-dropzone:active{border-color:var(--primary);background:#eef2ff}.photo-dropzone .icon{font-size:2.6rem}.photo-dropzone .title{color:var(--text);font-size:1.3rem;font-weight:700}.photo-dropzone .hint{font-size:1rem}.photo-dropzone img{border-radius:10px;max-width:100%;max-height:240px}.file-input-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.topbar{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.topbar .who{color:var(--muted);font-size:1.1rem}