:root{
  --or:#EE4D2D; --or2:#FF6633; --or-t:#FF7A45; --ink:#222; --mut:#737373; --line:#ececec;
  --gbg:#F1F8EC; --gln:#D5EAC8; --gtx:#2E7D32; --bg:#F4F4F5; --card:#fff;
  --dark:#111113; --dcard:#1B1B1F; --dline:#2B2B31;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:14px;line-height:1.55}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,p{margin:0}
a{color:inherit}
button{font:inherit;cursor:pointer}
[hidden]{display:none!important}

/* thanh tiêu đề */
.topbar{position:sticky;top:0;z-index:30;background:linear-gradient(90deg,var(--or),var(--or2));color:#fff}
.topbar-in{max-width:440px;margin:0 auto;padding:10px 16px;font-weight:700;font-size:13px}

/* khung trang: mobile 1 cột như gốc */
.page{max-width:440px;margin:0 auto;background:var(--card);padding-bottom:84px}
.col-main,.col-order{min-width:0}

/* hero trượt */
.hero{position:relative;background:#0b0b12}
.slides{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none}
.slides::-webkit-scrollbar{display:none}
.slides img{flex:0 0 100%;width:100%;aspect-ratio:1/1;object-fit:cover;scroll-snap-align:start}
.sl-btn{position:absolute;top:50%;transform:translateY(-50%);width:30px;height:30px;border:0;border-radius:50%;background:rgba(0,0,0,.45);color:#fff;font-size:22px;line-height:28px;padding:0}
.sl-btn.prev{left:8px}.sl-btn.next{right:8px}
.dots{position:absolute;left:0;right:0;bottom:8px;display:flex;gap:6px;justify-content:center}
.dots i{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.45)}
.dots i.on{background:#fff;width:18px;border-radius:4px}

/* flashsale */
.flash{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:linear-gradient(90deg,#E8322B,#B8141B);color:#fff}
.flash-l{font-weight:700;font-size:13px}
.flash-r{font-size:11px;font-weight:700;display:flex;align-items:center;gap:6px}
.flash .cd i{display:inline-block;min-width:24px;margin-left:3px;padding:3px 4px;border-radius:4px;background:#111;color:#fff;font-style:normal;font-size:13px;text-align:center}

/* phần chữ */
.sec{padding:18px 16px}
.intro{padding-top:14px}
.price-row{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.price{color:var(--or);font-size:26px;font-weight:900}
.old{color:var(--mut);font-size:18px}
.via{margin-left:auto;font-size:11px;color:var(--mut)}
h1{font-size:19px;font-weight:900;line-height:1.35;margin:14px 0 10px}
.lead{color:#444;font-size:14px}
.gbox{margin-top:14px;padding:14px;border-radius:12px;background:var(--gbg);border:1px solid var(--gln)}
.gbox p{font-size:13.5px;color:#333;margin-top:7px}
.gbox .gbox-t{color:var(--gtx);font-weight:700;margin-top:0;font-size:14px}
.caps{margin-top:16px;color:var(--or-t);font-weight:800;font-size:11px;letter-spacing:.4px;line-height:1.6}
.h{font-size:16px;font-weight:900;line-height:1.45}
.ticks{list-style:none;padding:0;margin:8px 0 0}
.ticks li{position:relative;padding-left:22px;margin-top:7px;font-size:13.5px;color:#333}
.ticks li::before{content:"✓";position:absolute;left:2px;top:0;color:var(--gtx);font-weight:900}
.strong{margin-top:16px;font-weight:700;font-size:14px}
.muted{margin-top:10px;color:#555}

/* khối tối: bên trong có gì */
.dark{background:var(--dark);color:#fff;padding:18px 12px 20px}
.dark h2{font-size:16px;font-weight:900;margin:0 4px 12px}
.items{display:grid;gap:10px}
.item{display:flex;gap:12px;align-items:center;padding:12px;border-radius:12px;background:var(--dcard);border:1px solid var(--dline)}
.item.core{border-color:#C62828;box-shadow:0 0 0 1px rgba(229,57,53,.25) inset}
.item img{width:78px;height:78px;object-fit:contain;flex:0 0 78px}
.tag{display:block;font-size:10px;font-weight:800;letter-spacing:.6px;color:var(--or-t)}
.item.core .tag{color:#FF5A36}
.item h3{font-size:15px;font-weight:900;margin:2px 0 4px}
.item p{font-size:12.5px;color:#C9C9CF;line-height:1.5}
.item p b{color:#fff}

/* hình thức nhận */
.recv{position:relative}
.badge{display:inline-block;background:var(--or);color:#fff;font-size:11px;font-weight:700;padding:2px 8px;border-radius:5px}
.recv-t{font-size:15px!important;font-weight:700;color:var(--ink)!important;margin-top:8px!important}
.ways{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:14px;padding:10px;border:1px solid var(--line);border-radius:12px}
.ways div{display:flex;align-items:center;gap:7px;font-size:11px;color:#555;line-height:1.3}
.wi{color:var(--or);font-size:16px;width:20px;text-align:center}

/* bình luận */
.cmts{display:grid;gap:6px;padding-top:4px}
.cmts img{width:100%;height:auto}

/* FAQ */
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;display:flex;justify-content:space-between;gap:12px;padding:14px 4px;font-weight:700;font-size:14px;cursor:pointer}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;font-weight:400;line-height:1;color:#333}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 4px 14px;color:#555}
.faq .h{margin-bottom:4px}

/* BẢNG ĐẶT HÀNG */
.col-order{padding:8px 0 0;scroll-margin-top:38px}
.panel{background:#fff;border-top:6px solid var(--bg)}
.p-head{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;border-bottom:1px solid var(--line);font-size:13px}
.p-head b{font-size:13px;letter-spacing:.3px}
.p-body{padding:14px}
.p-title{font-weight:900;font-size:15px}
.p-sub{color:var(--mut);font-size:12.5px;margin-top:2px}
.info{margin-top:10px;padding:10px 12px;border-radius:10px;background:#EAF3FF;border:1px solid #CFE2FF;font-size:13px;color:#33475b}
.info b{color:#1565C0}
.opt-t{margin-top:14px;font-weight:700;font-size:14px}
.opts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:8px}
.opt{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;padding:14px 8px 10px;border-radius:12px;border:1.5px solid var(--line)}
.opt.on{border-color:var(--or);background:#FFF5F1}
.opt.off{background:#f6f6f6;color:#aaa}
.opt .oi{font-size:22px}
.opt b{font-size:14px;margin-top:2px}
.opt small{font-size:11.5px;color:var(--or)}
.opt.off small{color:#aaa}
.ck{position:absolute;top:6px;right:6px;width:18px;height:18px;border-radius:50%;background:var(--or);color:#fff;font-size:11px;line-height:18px}
.ribbon{position:absolute;top:6px;right:6px;font-size:9px;font-weight:800;background:#EF9A9A;color:#fff;padding:2px 6px;border-radius:4px}
.fl{display:block;margin-top:14px;font-weight:700;font-size:13.5px}
.fl i{color:var(--or);font-style:normal}
.fl input{display:block;width:100%;margin-top:6px;padding:12px 13px;border:1.5px solid #d9d9d9;border-radius:10px;font:inherit;font-size:16px;font-weight:400;background:#fff;color:var(--ink)}
.fl input:focus{outline:none;border-color:var(--or);box-shadow:0 0 0 3px rgba(238,77,45,.15)}
.fl input.bad{border-color:#E53935}
.err{display:block;color:#E53935;font-size:12px;min-height:0;margin-top:4px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.sum{margin-top:16px;padding:14px;border-radius:12px;background:#FFF1EC;border:1px solid #F7B9A6}
.sum-r{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:8px;font-size:13px;color:#555}
.sum-r b{color:var(--ink);text-align:right}
.sum-p{color:#E53935!important;font-size:24px;font-weight:900}
.sum-p s{color:#999;font-size:14px;font-weight:400;margin-right:6px}
.deal{margin:4px 0 12px;padding:9px;border-radius:9px;background:#FFF3D6;border:1px solid #F3D28A;text-align:center;color:#C25E00;font-weight:700;font-size:13px}
.deal .cd i{font-style:normal;color:#333;letter-spacing:.5px}
.cta{display:block;width:100%;border:0;border-radius:10px;padding:14px 16px;background:linear-gradient(90deg,var(--or),var(--or2));color:#fff;font-weight:900;font-size:18px;text-align:center;text-decoration:none;box-shadow:0 6px 16px rgba(238,77,45,.3)}
.cta:disabled{opacity:.7;cursor:wait}
.cta.zalo{background:#0068FF;box-shadow:0 6px 16px rgba(0,104,255,.25);font-size:15px;margin-top:10px}
.form-err{color:#E53935;font-size:13px;text-align:center;margin-top:8px}
.form-err:empty{display:none}
.trust{display:flex;flex-wrap:wrap;justify-content:center;gap:4px 12px;margin-top:10px;font-size:11.5px;color:#555}
.t2{margin-top:12px;color:#666}
.note{margin-top:12px;font-size:11.5px;color:var(--mut);text-align:center}
.bought{margin-top:10px;padding:8px;border-radius:8px;background:#FDECEC;color:#C62828;text-align:center;font-size:12.5px}

/* thanh toán */
.secure{padding:10px 12px;border-radius:10px;background:#1B7F3A;color:#fff;font-weight:700;font-size:13px;text-align:center}
.step{display:flex;align-items:center;gap:8px;margin-top:18px;font-weight:900;font-size:15px}
.step span{flex:0 0 24px;height:24px;border-radius:50%;background:var(--or);color:#fff;font-size:13px;text-align:center;line-height:24px}
.step b{font-weight:700;color:var(--or);font-size:13px;word-break:break-all}
.step .st3{flex:1;width:auto;height:auto;border-radius:0;background:none;color:inherit;font-size:15px;line-height:1.4;text-align:left}
.pill{margin-top:10px;padding:10px 12px;border-radius:10px;background:#E8F8F1;border:1px solid #BFE9D6;color:#1F9D6B;font-size:13.5px}
.qr-card{margin-top:12px;padding:16px;border-radius:14px;background:#4CAF50;text-align:center}
.qr-in{background:#fff;border-radius:12px;padding:10px;display:inline-block}
.qr-in img{width:240px;height:auto;aspect-ratio:1/1;object-fit:contain}
.qr-tip{color:#fff;font-size:12px;margin-top:10px}
.amt-l{text-align:center;color:var(--mut);font-size:13px;margin-top:14px}
.amt{text-align:center;color:#E53935;font-size:28px;font-weight:900}
.bank{width:100%;border-collapse:collapse;margin-top:10px;background:#F7F7F7;border-radius:12px;overflow:hidden;font-size:13.5px}
.bank td{padding:10px 12px;border-bottom:1px solid #eaeaea}
.bank tr:last-child td{border-bottom:0}
.bank td:first-child{color:#666;white-space:nowrap}
.bank td:last-child{text-align:right;font-weight:700}
.code{color:var(--or);letter-spacing:.5px}
.cp{margin-left:6px;padding:3px 8px;border:1px solid var(--or);border-radius:6px;background:#fff;color:var(--or);font-size:11.5px;font-weight:700}
.cp.ok{background:var(--or);color:#fff}
.warn{margin-top:10px;font-size:12.5px;color:#8a5a00;background:#FFF8E1;border-radius:8px;padding:8px 10px}
.promise{margin-top:12px;padding:12px;border-radius:10px;background:var(--gbg);border:1px solid var(--gln);font-size:13px;color:#333}
.promise b{color:var(--gtx)}
.wait{display:flex;gap:12px;align-items:center;margin-top:10px;padding:12px;border-radius:12px;border:1.5px dashed #F7B9A6;background:#FFF8F5;font-size:13.5px}
.wait small{color:#666;font-size:12px}
.spin{flex:0 0 26px;height:26px;border-radius:50%;border:3px solid #FFD5C7;border-top-color:var(--or);animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.help{margin-top:10px;font-size:12.5px;color:#555}
.zalo-l{color:#0068FF;font-weight:700}
.link-btn{display:block;margin:12px auto 0;border:0;background:none;color:#888;text-decoration:underline;font-size:12px}

/* thanh trạng thái tự động (dính trên cùng khi đang chờ tiền) */
.pay{padding-top:10px;scroll-margin-top:40px}
.live{position:sticky;top:40px;z-index:6;margin:0 -4px 10px;padding:10px 12px 9px;border-radius:12px;background:#0F7A3A;color:#fff;box-shadow:0 6px 16px rgba(15,122,58,.28)}
.live-top{display:flex;align-items:center;gap:8px;font-size:14.5px}
.live-top b{flex:1;line-height:1.3}
.pulse{flex:0 0 10px;height:10px;border-radius:50%;background:#7CFFA8;box-shadow:0 0 0 0 rgba(124,255,168,.7);animation:pl 1.4s infinite}
@keyframes pl{70%{box-shadow:0 0 0 9px rgba(124,255,168,0)}100%{box-shadow:0 0 0 0 rgba(124,255,168,0)}}
.live-time{font-variant-numeric:tabular-nums;font-size:12px;background:rgba(255,255,255,.18);padding:2px 7px;border-radius:20px}
.live-sub{margin-top:4px;font-size:12.5px;line-height:1.45;color:#E3F7EA}
.live-sub b{color:#fff}
.live-steps{list-style:none;display:flex;gap:4px;margin:8px 0 0;padding:0;font-size:11px;color:#BFE8CF}
.live-steps li{flex:1;display:flex;align-items:center;gap:4px;padding:4px 5px;border-radius:7px;background:rgba(255,255,255,.08);line-height:1.2}
.live-steps i{flex:0 0 16px;height:16px;border-radius:50%;background:rgba(255,255,255,.2);font-style:normal;font-size:10px;font-weight:800;text-align:center;line-height:16px;color:#fff}
.live-steps li.on{background:#fff;color:#0F7A3A;font-weight:700}
.live-steps li.on i{background:#0F7A3A}
.live-steps li.ok{color:#fff}
.live-steps li.ok i{background:#7CFFA8;color:#0F7A3A}
.live.got{background:#1565C0;box-shadow:0 6px 16px rgba(21,101,192,.3)}
.qr-card{margin-top:0;padding:10px 12px 12px}
.qr-head{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:8px;color:#fff;font-size:12.5px;text-align:left;line-height:1.3}
.qr-head b{font-size:22px;font-weight:900;white-space:nowrap;background:#fff;color:#E53935;padding:2px 10px;border-radius:8px}
.qr-in img{width:200px}
.qr-tip{margin-top:8px}
.or{margin:14px 0 0;text-align:center;font-size:12px;color:#999}
.pay .secure{margin-top:12px;font-size:12px;padding:8px 10px}
.pay .step{margin-top:14px}
.pay .step span:first-child{background:#2E7D32}

/* thành công */
.done{text-align:center}
.ok-ic{width:58px;height:58px;margin:4px auto 8px;border-radius:50%;background:#2E7D32;color:#fff;font-size:32px;line-height:58px;font-weight:900}
.done h3{font-size:20px;font-weight:900;color:#2E7D32}
.ok-sub{margin:6px 0 12px;color:#555;font-size:13px}
.deliver{text-align:left;padding:14px;border-radius:12px;background:#FFF4EF;border:1px solid #FFD3C2;margin-bottom:12px}
.dl-k{font-size:12px;color:#777}
.dl-v{font-weight:700;margin-bottom:8px;word-break:break-all}
.dl-v a{color:var(--or)}
.pass{font-family:Consolas,Menlo,monospace;font-size:16px;background:#fff;border:1px dashed var(--or);padding:3px 8px;border-radius:6px}

/* nút Mua Ngay dính đáy (mobile) */
.buybar{position:fixed;left:0;right:0;bottom:0;z-index:40;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.96);box-shadow:0 -4px 14px rgba(0,0,0,.08);transition:transform .25s}
.buybar .cta{max-width:408px;margin:0 auto;font-size:16px;padding:12px;border-radius:8px;font-weight:700}
.buybar.hide{transform:translateY(110%)}

/* ===== DESKTOP: 2 cột, bảng đặt hàng dính bên phải ===== */
@media (min-width:1000px){
  .topbar-in{max-width:1160px;font-size:14px;padding:12px 24px}
  .page{max-width:1160px;display:grid;grid-template-columns:minmax(0,1fr) 430px;gap:28px;align-items:start;background:transparent;padding:24px 24px 60px}
  .col-main{background:#fff;border-radius:18px;overflow:hidden;box-shadow:0 2px 14px rgba(0,0,0,.05)}
  .col-order{position:sticky;top:64px;padding:0;max-height:calc(100vh - 80px);overflow-y:auto;border-radius:18px;scrollbar-width:thin;scroll-margin-top:64px}
  .panel{border:0;border-radius:18px;box-shadow:0 8px 30px rgba(0,0,0,.08);overflow:clip}
  .hero .slides img{aspect-ratio:16/10;object-fit:contain;background:#0b0b12}
  .sec{padding:24px 32px}
  .intro{padding-top:20px}
  h1{font-size:26px}
  .lead{font-size:15px}
  .price{font-size:32px}
  .dark{padding:26px 32px}
  .dark h2{font-size:20px}
  .items{grid-template-columns:repeat(3,1fr);gap:14px}
  .item{flex-direction:column;align-items:flex-start;padding:16px}
  .item img{width:110px;height:110px;flex:0 0 auto}
  .item.core{grid-column:1/-1;flex-direction:row;align-items:center}
  .h{font-size:19px}
  .cmts{grid-template-columns:1fr;max-width:620px}
  .buybar{display:none}
  .live{top:0}
  .qr-in img{width:220px}
}