:root{
  --paper:#fff; --tile:#efefec; --ink:#000; --muted:#6e6e73; --line:#e3e3e0; --hover:#f5f5f4;
  --cobalt:#2340d8;
  --gut:clamp(16px,3.2vw,48px);
  --f:"Be Vietnam Pro",-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-padding-top:72px}
body{margin:0;background:var(--paper);color:var(--ink);font:400 16px/1.55 var(--f);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--cobalt);outline-offset:2px}

/* ---------- thanh tren ---------- */
.bar{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:auto minmax(0,440px);justify-content:space-between;
  align-items:center;gap:16px;height:64px;padding:0 var(--gut);background:rgba(255,255,255,.96);backdrop-filter:saturate(1.6) blur(12px);
  border-bottom:1px solid transparent;transition:border-color .2s}
.bar.lined{border-color:var(--line)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.02em;white-space:nowrap}
.brand img{width:34px;height:34px;border-radius:50%;object-fit:cover}
.find{display:flex;align-items:center;gap:8px;height:42px;padding:0 16px;border-radius:21px;background:var(--hover)}
.find:focus-within{background:#ececea}
.find svg{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.find input{flex:1;min-width:0;border:0;background:none;font:inherit;font-size:15px;outline:none}
.find input::-webkit-search-cancel-button{opacity:.5}

/* ---------- banner: ten shop rat lon ---------- */
.hero{position:relative;margin:0 var(--gut);min-height:clamp(260px,42vw,560px);display:flex;align-items:flex-end;
  background:#000 center/cover no-repeat;color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 35%,rgba(0,0,0,.55))}
.hero-in{position:relative;padding:clamp(20px,3vw,40px)}
.hero h1{margin:0;font-weight:800;font-size:clamp(56px,12.5vw,176px);line-height:.84;letter-spacing:-.055em;text-wrap:balance}
.hero p{margin:14px 0 0;max-width:46ch;font-size:clamp(15px,1.4vw,18px);color:rgba(255,255,255,.88)}

/* ---------- thanh hang ---------- */
.rail{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:20px var(--gut) 4px;scroll-snap-type:x proximity}
.rail::-webkit-scrollbar{display:none}
.chip{flex:none;scroll-snap-align:start;display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 18px;border-radius:20px;
  border:1px solid var(--line);background:#fff;font-size:15px;font-weight:500;cursor:pointer;white-space:nowrap}
.chip:hover{border-color:#000}
.chip .n{color:var(--muted);font-weight:400;font-size:13px}
.chip[aria-pressed=true]{background:#000;border-color:#000;color:#fff}
.chip[aria-pressed=true] .n{color:rgba(255,255,255,.7)}

/* ---------- danh sach + bo loc ---------- */
.shop{display:grid;grid-template-columns:232px minmax(0,1fr);gap:40px;padding:24px var(--gut) 64px}
.head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px}
.head h2{margin:0;font-size:clamp(22px,2.4vw,30px);font-weight:700;letter-spacing:-.02em;line-height:1.15}
.head h2 small{font-weight:400;color:var(--muted);font-size:.62em;letter-spacing:0;margin-left:6px}
.tools{display:flex;gap:8px;align-items:center}
.sort{height:40px;padding:0 34px 0 14px;border:1px solid var(--line);border-radius:20px;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23000' stroke-width='1.6' fill='none'/%3E%3C/svg%3E") right 14px center no-repeat;
  appearance:none;font:inherit;font-size:14px;cursor:pointer}
.filter-btn{display:none;height:40px;padding:0 16px;border:1px solid var(--line);border-radius:20px;background:#fff;font-size:14px;font-weight:500;cursor:pointer;gap:6px;align-items:center}
.filter-btn b{display:inline-grid;place-items:center;min-width:20px;height:20px;border-radius:10px;background:var(--cobalt);color:#fff;font-size:12px}

.side{position:sticky;top:88px;align-self:start;display:flex;flex-direction:column;gap:28px}
.fgroup h3{margin:0 0 10px;font-size:16px;font-weight:600}
.opt{display:flex;align-items:center;gap:10px;padding:6px 0;font-size:15px;cursor:pointer}
.opt input{width:18px;height:18px;margin:0;accent-color:#000}
.range{display:grid;grid-template-columns:1fr auto 1fr;gap:6px;align-items:center;margin-top:8px}
.range input{width:100%;height:38px;padding:0 10px;border:1px solid var(--line);border-radius:8px;font:inherit;font-size:14px}
.range span{color:var(--muted)}
.apply{margin-top:8px;height:36px;width:100%;border:1px solid #000;border-radius:18px;background:#fff;font-size:14px;font-weight:500;cursor:pointer}
.apply:hover{background:#000;color:#fff}

.active{display:flex;flex-wrap:wrap;gap:8px;margin:-6px 0 18px}
.tag{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 6px 0 12px;border-radius:16px;background:var(--hover);font-size:14px}
.tag button{width:22px;height:22px;border:0;border-radius:50%;background:none;cursor:pointer;font-size:16px;line-height:1}
.tag button:hover{background:#e3e3e0}
.clear{border:0;background:none;font-size:14px;text-decoration:underline;cursor:pointer;color:var(--muted)}

.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:36px 14px}
.card{display:flex;flex-direction:column;gap:12px}
.ph{position:relative;aspect-ratio:1;background:var(--tile);overflow:hidden}
.ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ph .alt{opacity:0;transition:opacity .25s}
@media (hover:hover){.card:hover .ph .alt{opacity:1}}
.new{position:absolute;left:10px;top:10px;padding:2px 9px;border-radius:12px;background:#fff;color:var(--cobalt);font-size:13px;font-weight:600}
.count{position:absolute;right:10px;bottom:10px;padding:1px 8px;border-radius:10px;background:rgba(255,255,255,.9);font-size:12px;color:#333}
.meta{display:flex;flex-direction:column;gap:2px}
.meta .t{font-weight:500;font-size:16px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta .c{color:var(--muted);font-size:15px}
.meta .p{margin-top:6px;font-weight:600;font-size:16px}
.meta .p.ask{font-weight:500;color:var(--muted)}
.empty{grid-column:1/-1;padding:72px 0;text-align:center;color:var(--muted)}
.empty b{display:block;color:var(--ink);font-size:20px;margin-bottom:6px}
.empty button{margin-top:16px}
.sentinel{height:1px}

/* ---------- chi tiet ---------- */
.crumb{display:flex;gap:8px;align-items:center;padding:16px var(--gut) 0;font-size:14px;color:var(--muted)}
.crumb a:hover{color:var(--ink)}
.pd{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(320px,1fr);gap:clamp(24px,4vw,64px);padding:16px var(--gut) 64px}
.gal{display:grid;grid-template-columns:72px minmax(0,1fr);gap:12px;position:sticky;top:80px;align-self:start}
.thumbs{display:flex;flex-direction:column;gap:8px;max-height:calc(100vh - 120px);overflow:auto;scrollbar-width:none}
.thumbs::-webkit-scrollbar{display:none}
.thumbs button{padding:0;border:0;background:var(--tile);aspect-ratio:1;cursor:pointer;flex:none;position:relative}
.thumbs button img{width:100%;height:100%;object-fit:cover}
.thumbs button[aria-current=true]::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 2px #000}
.stage{position:relative;background:var(--tile)}
.slides{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;aspect-ratio:1}
.slides::-webkit-scrollbar{display:none}
.slides button{flex:0 0 100%;scroll-snap-align:center;padding:0;border:0;background:none;cursor:zoom-in}
.slides img{width:100%;height:100%;object-fit:contain}
.arrow{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:0;background:#fff;cursor:pointer;font-size:24px;line-height:1;display:grid;place-items:center}
.arrow.l{left:14px} .arrow.r{right:14px}
.arrow:disabled{opacity:0;pointer-events:none}
.dots{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);padding:2px 10px;border-radius:10px;background:rgba(255,255,255,.9);font-size:13px;display:none}

.info{display:flex;flex-direction:column;gap:6px}
.info .cat{font-size:16px;color:var(--muted);font-weight:500}
.info .cat a:hover{color:var(--ink)}
.info h1{margin:0;font-size:clamp(26px,2.6vw,34px);line-height:1.15;letter-spacing:-.02em;font-weight:700}
.info .price{margin-top:14px;font-size:22px;font-weight:600}
.info .price.ask{color:var(--muted);font-weight:500}
.info .desc{margin-top:22px;white-space:pre-wrap;line-height:1.7;max-width:62ch}
.facts{margin:26px 0 0;padding:0;display:grid;grid-template-columns:auto 1fr;gap:10px 24px;border-top:1px solid var(--line);padding-top:20px;font-size:15px}
.facts dt{color:var(--muted)} .facts dd{margin:0}
.copy{border:0;background:none;padding:0;text-decoration:underline;cursor:pointer;font-size:15px}

.more{padding:0 var(--gut) 72px}
.more h2{font-size:24px;letter-spacing:-.02em;margin:0 0 18px}
.more .grid{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ---------- bang loc (dien thoai) ---------- */
.sheet{position:fixed;inset:0;z-index:40;background:rgba(0,0,0,.4);display:flex;align-items:flex-end}
.sheet-panel{width:100%;max-height:86vh;background:#fff;border-radius:16px 16px 0 0;display:flex;flex-direction:column;animation:up .22s ease-out}
@keyframes up{from{transform:translateY(40px);opacity:.4}}
.sheet-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)}
.sheet-head h2{margin:0;font-size:18px}
.x{width:36px;height:36px;border:0;border-radius:50%;background:var(--hover);font-size:22px;cursor:pointer}
.sheet-body{overflow:auto;padding:20px;display:flex;flex-direction:column;gap:28px}
.sheet-foot{display:grid;grid-template-columns:1fr 2fr;gap:10px;padding:14px 20px calc(14px + env(safe-area-inset-bottom));border-top:1px solid var(--line)}
.b{height:48px;border-radius:24px;font-size:16px;font-weight:500;cursor:pointer}
.b.solid{background:#000;color:#fff;border:0}
.b.ghost{background:#fff;border:1px solid var(--line)}

/* ---------- lightbox ---------- */
.lb{position:fixed;inset:0;z-index:50;background:#fff;display:flex;align-items:center;justify-content:center}
.lb img{max-width:100vw;max-height:100vh;object-fit:contain}
.lb-x,.lb-nav{position:absolute;border:0;border-radius:50%;background:var(--hover);cursor:pointer;width:48px;height:48px;font-size:28px;display:grid;place-items:center}
.lb-x{top:16px;right:16px} .lb-prev{left:16px} .lb-next{right:16px}
.lb-n{position:absolute;bottom:20px;font-size:14px;color:var(--muted)}

.foot{padding:28px var(--gut) calc(28px + env(safe-area-inset-bottom));border-top:1px solid var(--line);color:var(--muted);font-size:14px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.loading{min-height:70vh}

/* ---------- responsive ---------- */
@media (max-width:1100px){ .grid{grid-template-columns:repeat(2,minmax(0,1fr))} .more .grid{grid-template-columns:repeat(3,minmax(0,1fr))} }
@media (max-width:900px){
  .shop{grid-template-columns:1fr;gap:0;padding-top:18px}
  .side{display:none}
  .filter-btn{display:inline-flex}
  .pd{grid-template-columns:1fr;padding-top:8px}
  .gal{grid-template-columns:1fr;position:static;margin:0 calc(-1 * var(--gut))}
  .thumbs{display:none}
  .arrow{display:none}
  .dots{display:block}
  .more .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .bar{grid-template-columns:auto 1fr;gap:12px;height:60px}
  .brand span{max-width:30vw;overflow:hidden;text-overflow:ellipsis}
  .find{height:40px;padding:0 12px}
  .hero{margin:0}
  .grid{gap:28px 10px}
  .meta .t,.meta .p{font-size:15px} .meta .c{font-size:14px}
  .head{align-items:center}
  .sort{display:none}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}