:root{
  --blue:#1d4fc0; --blue-deep:#123ea1; --blue-soft:#eaf0ff; --orange:#ff8a1f; --orange-deep:#e8730a;
  --ink:#14213d; --muted:#5b6478; --line:#dde5f7; --bg:#f6f8fe; --card:#fff; --ok:#16a34a; --warn:#b45309;
  --radius:14px; --shadow:0 6px 20px rgba(18,62,161,.08);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Noto Sans TC",system-ui,-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px}
a{color:var(--blue)}
img{max-width:100%;display:block}
.container{max-width:1080px;margin:0 auto;padding:0 16px}
.narrow{max-width:760px}
.muted{color:var(--muted)}
.small{font-size:14px}

/* header */
.top-strip{background:var(--blue-deep);color:#dfe8ff;font-size:13px;text-align:center;padding:6px 16px}
.top-strip a{color:#fff}
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.head{display:flex;align-items:center;gap:16px;min-height:64px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:900;font-size:20px;letter-spacing:.04em;flex-shrink:0}
.logo img{width:38px;height:38px;border-radius:9px}
nav.main{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;margin-left:auto}
nav.main::-webkit-scrollbar{display:none}
nav.main a{white-space:nowrap;text-decoration:none;color:var(--ink);padding:8px 12px;border-radius:999px;font-size:15px}
nav.main a:hover,nav.main a.on{background:var(--blue-soft);color:var(--blue)}
nav.main a.cart{background:var(--orange);color:#fff;font-weight:700}
.cart-count{display:inline-block;min-width:20px;padding:0 6px;margin-left:4px;border-radius:999px;background:#fff;color:var(--orange-deep);font-size:12px;line-height:20px;text-align:center}
@media (max-width:720px){
  .head{flex-wrap:wrap;gap:0;padding:8px 16px 4px}
  nav.main{margin:4px 0 0;padding:0 0 6px;width:100%;flex-basis:100%}
}

/* hero */
.hero{background:var(--blue)}
.hero img{width:100%;height:auto;max-width:1280px;margin:0 auto;aspect-ratio:16/9;object-fit:cover}
.hero-cta{background:linear-gradient(180deg,var(--blue) 0,var(--blue-deep) 100%);color:#fff;padding:20px 0 28px;text-align:center}
.hero-cta p{margin:0 0 14px;color:#dfe8ff}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--orange);color:#fff;border:0;border-radius:999px;padding:12px 24px;font-size:16px;font-weight:700;text-decoration:none;cursor:pointer;font-family:inherit;transition:background .15s}
.btn:hover{background:var(--orange-deep)}
.btn.blue{background:var(--blue)}
.btn.blue:hover{background:var(--blue-deep)}
.btn.ghost{background:#fff;color:var(--blue);border:1.5px solid var(--blue)}
.btn.block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* sections */
section.block{padding:40px 0}
h1,h2,h3{line-height:1.35;margin:0 0 .6em}
h1{font-size:28px}
h2{font-size:24px}
h2.sec{display:flex;align-items:center;gap:10px}
h2.sec::before{content:"";width:6px;height:24px;border-radius:3px;background:var(--orange)}
.lead{color:var(--muted);margin-top:-6px}

/* product grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow)}
.card a.thumb{text-decoration:none}
.thumb-box{aspect-ratio:4/3;background:linear-gradient(135deg,var(--blue) 0,var(--blue-deep) 100%);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;position:relative;overflow:hidden}
.thumb-box img{width:100%;height:100%;object-fit:cover}
.thumb-box .glyph{font-size:46px;font-weight:900;line-height:1}
.thumb-box .glyph-sub{font-size:14px;opacity:.85;padding:0 16px;text-align:center}
.thumb-box::after{content:"";position:absolute;left:50%;bottom:22%;width:56px;height:6px;margin-left:-28px;border-radius:3px;background:var(--orange)}
.thumb-box.has-img::after{display:none}
.badge{position:absolute;top:12px;left:12px;background:var(--orange);color:#fff;font-size:12px;font-weight:700;padding:2px 10px;border-radius:999px;z-index:1}
.card .body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1}
.card h3{font-size:17px;margin:0}
.card h3 a{color:var(--ink);text-decoration:none}
.card p{margin:0;color:var(--muted);font-size:14px}
.price{font-size:22px;font-weight:900;color:var(--orange-deep)}
.price small{font-size:13px;color:var(--muted);font-weight:400;text-decoration:line-through;margin-left:6px}
.card .foot{margin-top:auto;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;padding-top:6px}
.card .foot .btn{padding:9px 16px;font-size:15px;white-space:nowrap}
body{overflow-x:hidden}

/* product detail */
.pd{display:grid;grid-template-columns:1fr 1fr;gap:32px;padding:32px 0}
@media (max-width:760px){.pd{grid-template-columns:1fr;gap:20px;padding:20px 0}}
.pd .thumb-box{border-radius:var(--radius)}
.pd ul{padding-left:1.2em}
.spec{background:var(--blue-soft);border-radius:10px;padding:10px 14px;font-size:14px}
.qty{display:inline-flex;align-items:center;border:1.5px solid var(--line);border-radius:999px;overflow:hidden;background:#fff}
.qty button{width:38px;height:38px;border:0;background:#fff;font-size:20px;cursor:pointer;color:var(--blue)}
.qty input{width:44px;height:38px;border:0;text-align:center;font-size:16px;font-family:inherit}
.buy-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:16px 0}
.ship-note{font-size:14px;color:var(--muted);border-top:1px dashed var(--line);padding-top:12px}

/* trust strip */
.trust{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.trust div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.trust b{display:block;color:var(--blue)}

/* prose pages */
.prose{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;margin:28px auto 40px}
@media (max-width:600px){.prose{padding:20px 16px}}
.prose h2{font-size:20px;margin-top:1.6em;color:var(--blue)}
.prose h2:first-of-type{margin-top:.6em}
.prose table{width:100%;border-collapse:collapse;font-size:15px;margin:10px 0}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.prose th{background:var(--blue-soft);white-space:nowrap}
.notice{background:#fff7ed;border:1px solid #fed7aa;color:#7c2d12;border-radius:10px;padding:12px 14px}
.info{background:var(--blue-soft);border-radius:10px;padding:12px 14px}

/* cart / checkout */
.cart-table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.cart-table td,.cart-table th{padding:12px;border-bottom:1px solid var(--line);text-align:left}
.cart-table th{background:var(--blue-soft);font-size:14px}
.cart-table .r{text-align:right;white-space:nowrap}
.link-btn{background:none;border:0;color:#b91c1c;cursor:pointer;font-size:14px;font-family:inherit;padding:4px}
@media (max-width:600px){
  .cart-table thead{display:none}
  .cart-table tr{display:grid;grid-template-columns:1fr auto;padding:10px 12px;border-bottom:1px solid var(--line)}
  .cart-table td{border:0;padding:4px 0}
  .cart-table td.name{grid-column:1/-1;font-weight:700}
}
.summary{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.summary .row{display:flex;justify-content:space-between;padding:4px 0}
.summary .total{border-top:1px solid var(--line);margin-top:8px;padding-top:10px;font-size:20px;font-weight:900}
.summary .total span:last-child{color:var(--orange-deep)}
.co{display:grid;grid-template-columns:1.3fr 1fr;gap:24px;padding:28px 0 48px;align-items:start}
@media (max-width:820px){.co{grid-template-columns:1fr}}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.field{margin-bottom:14px}
.field label{display:block;font-weight:700;font-size:15px;margin-bottom:4px}
.field input,.field textarea{width:100%;padding:11px 12px;font-size:16px;border:1.5px solid var(--line);border-radius:10px;font-family:inherit;background:#fff;color:var(--ink)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--blue)}
.field .hint{font-size:13px;color:var(--muted)}
.two{display:grid;grid-template-columns:110px 1fr;gap:10px}
@media (max-width:420px){.two{grid-template-columns:1fr}}
.check{display:flex;gap:8px;align-items:flex-start;font-size:15px;margin:10px 0}
.check input{margin-top:6px;width:18px;height:18px;flex-shrink:0}
.pay-logos{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}
.pay-logos span{font-size:13px;background:var(--blue-soft);color:var(--blue);border-radius:6px;padding:2px 8px}
.empty{text-align:center;padding:48px 16px;background:#fff;border:1px dashed var(--line);border-radius:var(--radius)}

/* footer */
footer.site{background:var(--blue-deep);color:#cfdcff;margin-top:24px;padding:36px 0 24px;font-size:14px}
footer.site a{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr}}
footer.site h4{color:#fff;margin:0 0 8px;font-size:15px}
footer.site ul{list-style:none;margin:0;padding:0}
footer.site li{margin:4px 0}
.contact-email{display:inline-block;background:var(--orange);color:#fff!important;font-weight:700;padding:4px 12px;border-radius:8px;text-decoration:none;word-break:break-all}
.copy{border-top:1px solid rgba(255,255,255,.15);margin-top:24px;padding-top:14px;color:#9fb4ea;font-size:13px}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:10px 18px;border-radius:999px;opacity:0;transition:.2s;z-index:50;font-size:15px;max-width:calc(100% - 32px)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:10px;margin-top:14px}
.gallery a{display:block;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;aspect-ratio:3/4}
.gallery img{width:100%;height:100%;object-fit:cover;object-position:top}