:root{--bg:#f4f6f9;--card:#fff;--fg:#1c2530;--mut:#667085;--pri:#1565c0;--line:#d9dee5;--ok:#2e7d32;--bad:#c62828;--sub:#fff4d6}
@media (prefers-color-scheme:dark){:root{--bg:#12171d;--card:#1c242d;--fg:#e8edf2;--mut:#98a3b0;--line:#33404d;--pri:#64a8ff;--sub:#3a331b}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,"Noto Sans TC","Microsoft JhengHei",sans-serif}
header{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;background:var(--pri);color:#fff;position:sticky;top:0;z-index:5}
header nav{display:flex;gap:4px}
button.link{background:none;border:0;color:inherit;padding:6px 8px;font:inherit;cursor:pointer}
#banner{background:#ffe9a8;color:#5a4300;padding:8px 16px;font-size:14px}
main{max-width:960px;margin:0 auto;padding:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:16px}
h1,h2,h3{margin:.2em 0 .6em}
h2{font-size:1.15rem}
label{display:block;font-size:14px;color:var(--mut);margin:10px 0 2px}
input,select,textarea{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);font:inherit}
input:focus,select:focus,textarea:focus{outline:2px solid var(--pri);outline-offset:0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:0 12px}
button{font:inherit;border:0;border-radius:8px;padding:10px 16px;background:var(--pri);color:#fff;cursor:pointer}
button.sec{background:transparent;color:var(--pri);border:1px solid var(--pri)}
button.bad{background:var(--bad)}
button:disabled{opacity:.5}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.row.sp{justify-content:space-between}
.mut{color:var(--mut);font-size:14px}
.month{margin-bottom:24px}
.trip{display:block;width:100%;text-align:left;background:var(--card);color:var(--fg);border:1px solid var(--line);margin-bottom:8px;padding:12px}
.trip .t1{display:flex;justify-content:space-between;gap:8px;font-weight:600}
.subtotal{background:var(--sub);border-radius:8px;padding:10px 12px;font-size:14px}
.subtotal b{font-size:16px}
.fee{border-top:1px solid var(--line);padding:12px 0}
.fee .head{display:flex;gap:8px;align-items:center}
.fee .head label{margin:0;min-width:5.5em;color:var(--fg);font-size:16px}
.fee .head input{flex:1;min-width:0}
.fee .head label.camlabel{display:inline-flex;align-items:center;gap:4px;padding:10px 12px;white-space:nowrap;min-width:0;margin:0;background:var(--pri);color:#fff;border-radius:8px;cursor:pointer;font-size:16px}
.cam input{display:none}
.thumbs{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.thumb{width:132px;border:1px solid var(--line);border-radius:8px;padding:6px;font-size:13px}
.thumb img{width:100%;height:96px;object-fit:cover;border-radius:6px;cursor:zoom-in;background:#0002}
.thumb input,.thumb select{padding:5px;font-size:13px;margin-top:4px}
.big{width:100%;padding:16px;font-size:1.1rem}
.total{position:sticky;bottom:0;background:var(--card);border-top:2px solid var(--pri);padding:10px 16px;margin:0 -16px -16px;display:flex;justify-content:space-between;font-size:1.1rem;border-radius:0 0 12px 12px}
#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#222;color:#fff;padding:10px 18px;border-radius:24px;z-index:20;max-width:90vw}
#toast.err{background:var(--bad)}
.lightbox{position:fixed;inset:0;background:#000d;display:flex;align-items:center;justify-content:center;z-index:30}
.lightbox img{max-width:96vw;max-height:96vh}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:8px;border-bottom:1px solid var(--line);text-align:left}
.tabs{display:flex;gap:8px;margin-bottom:12px}
.tabs button{flex:1}
.err{color:var(--bad)}
.spin{display:inline-block;width:14px;height:14px;border:2px solid #fff6;border-top-color:#fff;border-radius:50%;animation:s .8s linear infinite;vertical-align:-2px}
@keyframes s{to{transform:rotate(360deg)}}