:root{
  --bg:#f5f7fb;--card:#fff;--text:#111827;--muted:#6b7280;--line:#e5e7eb;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",sans-serif}
button,input,select{font:inherit}
button{cursor:pointer}
.app{width:min(100%,680px);margin:auto;padding:24px 16px 48px}
.eyebrow{font-size:11px;letter-spacing:.12em;font-weight:800;color:var(--muted);margin-bottom:5px}
h1,h2{margin:0}h1{font-size:28px}h2{font-size:20px}.muted{color:var(--muted);font-size:14px;margin-top:5px}
.library-head{margin-bottom:22px}
.new-trip{width:100%;border:0;background:#111827;color:#fff;border-radius:25px;padding:19px 20px;display:flex;align-items:center;gap:14px;text-align:left;box-shadow:0 16px 45px rgba(17,24,39,.14)}
.new-trip .plus{font-size:30px;font-weight:400;line-height:1}
.new-trip strong{display:block;font-size:17px}
.new-trip small{display:block;opacity:.62;font-size:12px;margin-top:4px}
.library-section-title{display:flex;justify-content:space-between;align-items:end;margin:28px 2px 12px}
.library-section-title h2{font-size:18px}
.trip-list{display:grid;gap:12px}
.trip-card{background:#fff;border:0;border-radius:22px;padding:18px;width:100%;text-align:left;box-shadow:0 9px 30px rgba(17,24,39,.05);display:grid;grid-template-columns:1fr auto;gap:14px;align-items:center}
.trip-card:active{transform:scale(.995)}
.trip-card-title{font-weight:800;font-size:17px}
.trip-card-date{font-size:12px;color:var(--muted);margin-top:4px}
.trip-card-spend{text-align:right}
.trip-card-spend strong{display:block;font-size:16px}
.trip-card-spend span{display:block;font-size:11px;color:var(--muted);margin-top:4px}
.library-empty{background:#fff;border-radius:20px}
.top,.section-title,.dialog-head{display:flex;align-items:center;justify-content:space-between;gap:16px}
.top{margin-bottom:18px}
.trip-head-copy{flex:1;min-width:0}
.trip-head-copy h1{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.round{width:44px;height:44px;border:0;border-radius:15px;background:white;box-shadow:0 8px 30px rgba(17,24,39,.07);display:grid;place-items:center}
.small{box-shadow:none;background:#f3f4f6}
.back{font-size:22px}
.hero{background:#111827;color:white;border-radius:30px;padding:24px;box-shadow:0 18px 50px rgba(17,24,39,.16);margin-bottom:18px}
.label{font-size:13px;opacity:.7}.total{font-size:40px;font-weight:850;letter-spacing:-.04em;margin-top:5px}.foreign{opacity:.6}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}.hero-grid div{background:rgba(255,255,255,.08);padding:14px;border-radius:18px}.hero-grid span{display:block;font-size:12px;opacity:.65;margin-bottom:5px}
.progress-line{height:8px;background:rgba(255,255,255,.14);border-radius:999px;margin-top:20px;overflow:hidden}.progress-line div{height:100%;background:white;border-radius:999px;width:0}.progress-text{display:flex;justify-content:space-between;font-size:12px;opacity:.7;margin-top:7px}
.card{background:var(--card);border-radius:24px;padding:20px;margin-bottom:18px;box-shadow:0 10px 35px rgba(17,24,39,.05)}.section-title{margin-bottom:15px}
.amount-box{display:flex;align-items:center;justify-content:center;background:#f3f4f6;border-radius:20px;padding:14px}.amount-box span{font-size:28px;font-weight:800}.amount-box input{width:180px;max-width:70%;border:0;background:transparent;outline:0;font-size:42px;font-weight:850;text-align:center}
.converted{text-align:center;color:var(--muted);font-size:13px;margin:8px 0 14px}.categories{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:14px 0}.category{border:1px solid var(--line);background:white;border-radius:16px;padding:12px 8px;display:flex;flex-direction:column;align-items:center;gap:5px}.category span{font-size:13px}.category.active{background:#111827;color:white;border-color:#111827}
.input{width:100%;border:1px solid var(--line);border-radius:14px;background:white;padding:13px 14px;outline:none;margin-top:7px}.primary{width:100%;border:0;border-radius:16px;background:#111827;color:white;padding:14px 16px;font-weight:800;margin-top:12px}
.item{display:grid;grid-template-columns:44px 1fr auto auto;gap:11px;align-items:center;padding:11px 0;border-bottom:1px solid var(--line)}.item:last-child{border-bottom:0}.emoji{width:42px;height:42px;border-radius:14px;background:#f3f4f6;display:grid;place-items:center;font-size:20px}.item-main strong{display:block;font-size:15px}.item-main span,.money span{display:block;font-size:12px;color:var(--muted)}.money{text-align:right}.delete{border:0;background:transparent;color:#9ca3af;font-size:18px}.empty{text-align:center;color:var(--muted);padding:15px}
.stat{display:grid;grid-template-columns:70px 1fr 80px;gap:10px;align-items:center;margin:11px 0}.track{height:9px;background:#f3f4f6;border-radius:999px;overflow:hidden}.fill{height:100%;background:#111827}.stat-value{text-align:right;color:var(--muted);font-size:12px}
dialog{width:min(calc(100% - 28px),560px);border:0;border-radius:26px;padding:0;box-shadow:0 30px 80px rgba(0,0,0,.25)}dialog::backdrop{background:rgba(17,24,39,.45);backdrop-filter:blur(3px)}.dialog{padding:22px}.dialog label{display:block;color:var(--muted);font-size:13px;margin-top:13px}.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.dialog-intro{color:var(--muted);font-size:13px;line-height:1.5;margin:10px 0 4px}
.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,18px);background:#111827;color:#fff;padding:11px 16px;border-radius:999px;font-weight:800;font-size:14px;opacity:0;pointer-events:none;transition:.2s ease;box-shadow:0 12px 40px rgba(17,24,39,.25);z-index:99}
.toast.show{opacity:1;transform:translate(-50%,0)}
.item.clickable{cursor:pointer}
@media(max-width:420px){
  .total{font-size:35px}.amount-box input{font-size:38px}.hero-grid{gap:8px}.app{padding-left:12px;padding-right:12px}
  .trip-card{padding:16px}.trip-card-title{font-size:16px}
}

.prepaid-info{
  display:inline-block;
  margin-top:10px;
  padding:7px 10px;
  border-radius:999px;
  background:rgba(255,255,255,.08);
  font-size:12px;
  color:rgba(255,255,255,.78);
}