:root{
  --bg:#F7F5F2; --surface:#FFFFFF; --ink:#222222; --muted:#666666; --line:#E5E1DA; --sand:#E2D9CD;
  --brass:#8A6F47; --brass-soft:#F5EEE3; --brass-light:#C8A97E; --band:#2B2925; --band-muted:#D8D2C8;
  --warn:#8A5A1E; --warn-soft:#FBF0DF;
  --red:#D32F2F; --red-dark:#B71C1C; --red-soft:#FDECEA; --ok:#2E7D32; --ok-soft:#EAF5EA;
  --font:"Be Vietnam Pro","Segoe UI",Arial,sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:15px;line-height:1.55}
[hidden]{display:none!important}
.wrap{max-width:1200px;margin:0 auto;padding-inline:20px}
.row{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.row.end{justify-content:flex-end}
.top{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.top .row{padding-block:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);text-decoration:none}
.mark{width:32px;height:32px;border-radius:8px;background:var(--brass);color:#fff;display:grid;place-items:center;font-size:13px}
.tabs{display:flex;flex-wrap:wrap;gap:4px;flex:1 1 auto}
.tabs button,.tabs a{font:inherit;font-size:14px;padding:8px 12px;border:0;border-radius:8px;background:none;color:var(--ink);cursor:pointer;text-decoration:none}
.tabs button[aria-pressed="true"]{background:var(--brass-soft);color:var(--brass);font-weight:600}
.account{display:flex;gap:8px;align-items:center}
.credits{font-size:14px;font-weight:600;padding:7px 12px;border-radius:999px;background:var(--brass-soft);color:var(--brass)}
.btn{font:inherit;font-weight:600;font-size:14px;padding:10px 14px;border-radius:8px;border:1px solid var(--ink);background:var(--surface);color:var(--ink);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}
.btn.primary{background:var(--brass);border-color:var(--brass);color:#fff}
.btn.dark{background:var(--ink);border-color:var(--ink);color:#fff}
.btn.big{padding:14px;font-size:16px;width:100%}
.btn.small{padding:7px 10px;font-size:13px}
.btn:disabled{opacity:.6;cursor:wait}
:focus-visible{outline:2px solid var(--brass);outline-offset:2px}
.hero{background:var(--band);color:#fff}
.hero .wrap{padding-block:36px;display:flex;flex-direction:column;gap:8px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--brass-light)}
h1{margin:0;font-size:clamp(24px,4vw,36px);line-height:1.2;letter-spacing:-.02em;text-wrap:balance}
.hero p{margin:0;color:var(--band-muted);max-width:64ch}
.grid{display:flex;flex-wrap:wrap;gap:24px;align-items:flex-start;padding-block:24px 48px}
.panel{background:var(--surface);border:1px solid var(--line);padding:18px}
.form{flex:1 1 320px;max-width:420px;min-width:0;display:flex;flex-direction:column;gap:14px}
.results{flex:999 1 520px;min-width:0;display:flex;flex-direction:column;gap:16px}
.field{display:flex;flex-direction:column;gap:6px;border:0;margin:0;padding:0;min-width:0}
.label{font-size:13px;font-weight:600}
.two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
select,textarea,input[type=tel],input:not([type]){font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink);width:100%}
.check{display:flex;gap:8px;align-items:center;font-size:14px}
.seg{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.seg button{font:inherit;font-size:14px;padding:10px 6px;border:1px solid var(--line);border-radius:8px;background:var(--surface);cursor:pointer}
.seg button[aria-pressed="true"]{border:2px solid var(--brass);background:var(--brass-soft);color:var(--brass);font-weight:600;padding:9px 5px}
.drop{position:relative;display:grid;place-items:center;min-height:180px;border:1.5px dashed var(--brass-light);background:var(--brass-soft);text-align:center;padding:12px;cursor:pointer}
.drop.over{border-style:solid;border-color:var(--brass)}
.drop input{position:absolute;inset:0;opacity:0;cursor:pointer}
.drop img{max-width:100%;max-height:260px}
.hint{display:flex;flex-direction:column;gap:4px;font-size:14px}
.note{margin:0;font-size:13px;color:var(--muted)}
.status{padding:12px 14px;border:1px solid var(--line);background:var(--surface);font-size:14px}
.status{border-left:4px solid var(--ok);background:var(--ok-soft);color:#1B5E20;border-color:transparent;border-left-color:var(--ok)}
.status.warn{background:var(--red-soft);border-color:#F5C2C0;border-left-color:var(--red);color:var(--red-dark);font-weight:600}
.status.warn::before{content:"⚠ ";font-weight:700}
.status .btn{margin-left:8px}
.status .btn.primary{background:var(--red);border-color:var(--red)}
.bonus,.cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.bonus>div,.cta>div{display:flex;flex-direction:column;gap:2px;font-size:14px}
.bonus span,.cta span{color:var(--muted)}
.inline{display:flex;gap:8px}
.inline input{width:160px}
.out{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.empty{display:flex;flex-direction:column;gap:6px;grid-column:1/-1;color:var(--muted)}
.empty b{color:var(--ink)}
.result{margin:0;padding:0;display:flex;flex-direction:column}
.compare{position:relative;aspect-ratio:4/3;max-width:100%;background:var(--sand);overflow:hidden}
.compare img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.compare input{position:absolute;inset:auto 0 10px;width:calc(100% - 20px);margin:0 10px}
.result figcaption{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:12px}
.result figcaption span{font-weight:600;flex:1 1 auto}
dialog{border:0;padding:0;max-width:520px;width:calc(100% - 32px);background:transparent}
dialog::backdrop{background:rgba(20,18,15,.55)}
.lead{display:flex;flex-direction:column;gap:12px}
.lead h2{margin:0;font-size:20px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.foot{border-top:1px solid var(--line);background:var(--surface);font-size:13px;color:var(--muted)}
.foot .row{padding-block:18px;justify-content:space-between}
@media (max-width:520px){.account .btn{padding:8px 10px;font-size:13px}.inline input{width:120px}}
button.credits{border:0;cursor:pointer;font:inherit;font-size:14px;font-weight:600}
button.credits{background:var(--red);color:#fff;display:inline-flex;align-items:center;gap:8px;box-shadow:0 2px 8px rgba(211,47,47,.3)}
button.credits::after{content:"+ Nạp";background:#fff;color:var(--red);font-size:12px;font-weight:700;padding:2px 8px;border-radius:999px}
button.credits:hover,button.credits:focus-visible{background:var(--red-dark)}
button.credits.low{animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(211,47,47,.55)}50%{box-shadow:0 0 0 8px rgba(211,47,47,0)}}
@media (prefers-reduced-motion:reduce){button.credits.low{animation:none}}
#tp-code{color:var(--red);font-size:18px;letter-spacing:.5px}
#tp-msg{background:var(--red-soft);border-left:4px solid var(--red);color:var(--red-dark);padding:10px 12px;font-weight:600}
#tp-msg.done{background:var(--ok-soft);border-left-color:var(--ok);color:#1B5E20}
.packs{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-top:10px}
.pack{font:inherit;text-align:left;display:flex;flex-direction:column;gap:2px;padding:14px;border:1px solid var(--line);border-radius:8px;background:var(--surface);cursor:pointer;color:var(--ink)}
.pack:hover,.pack:focus-visible{border-color:var(--brass);background:var(--brass-soft)}
.pack .price{font-size:18px;font-weight:700;color:var(--brass)}
.pack span{font-size:13px}
.muted{color:var(--muted)}
.qr{display:block;margin:0 auto;width:240px;max-width:100%;height:auto;background:var(--brass-soft)}
.pay{display:grid;grid-template-columns:auto 1fr;gap:6px 12px;margin:12px 0 0;font-size:14px}
.pay dt{color:var(--muted)}
.pay dd{margin:0;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.tabs a[aria-current="page"]{background:var(--brass-soft);color:var(--brass);font-weight:600}
.stack{display:flex;flex-direction:column;gap:16px;padding-block:8px}
main.stack{padding-block:24px 48px}
h2{margin:0;font-size:20px;letter-spacing:-.01em}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.stat{display:flex;flex-direction:column;gap:4px;align-items:flex-start}
.stat span{font-size:13px;color:var(--muted)}
.stat b{font-size:28px;line-height:1.2;font-variant-numeric:tabular-nums}
.stat small{color:var(--muted)}
.stat .btn{margin-top:6px}
.tablewrap{padding:0;overflow-x:auto}
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th,.tbl td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl th{font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.tbl tr:last-child td{border-bottom:0}
.num{text-align:right!important;font-variant-numeric:tabular-nums}
.plus{color:#2F6B3A;font-weight:600}.minus{color:var(--ink)}
.thumb{display:block;aspect-ratio:4/3;background:var(--sand);overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover;display:block}
.result figcaption small{flex-basis:100%}
.leads{display:flex;flex-direction:column;gap:12px}
.lead-card{display:flex;flex-direction:column;gap:10px}
.lead-head{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;align-items:center}
.lead-head select{width:auto}
.lead-info{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:14px}
.lead-imgs{display:flex;gap:8px;overflow-x:auto}
.lead-imgs a{flex:0 0 160px;display:flex;flex-direction:column;gap:4px;color:var(--muted);text-decoration:none;font-size:12px}
.lead-imgs img{width:160px;height:120px;object-fit:cover;background:var(--sand)}
.seg4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:520px){.seg4{grid-template-columns:repeat(2,minmax(0,1fr))}}
.result video{width:100%;display:block;background:#000;max-height:70vh}
.vstatus{padding:10px 12px;font-size:13px;background:var(--brass-soft);color:var(--brass)}
.grant{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;align-items:end}
input[type=email],input[type=number]{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink);width:100%}
/* gợi ý nhanh cho Sửa theo lời */
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{font:inherit;font-size:13px;padding:6px 10px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--ink);cursor:pointer}
.chip:hover{border-color:var(--brass);color:var(--brass)}
@media (max-width:640px){.tabs{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}.tabs::-webkit-scrollbar{display:none}.tabs button,.tabs a{white-space:nowrap;flex:0 0 auto}}
/* dải chọn công cụ trong phần đầu trang */
.toolbar{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-top:16px}
.toolbar button{font:inherit;text-align:left;display:flex;flex-direction:column;gap:2px;padding:12px;border:1px solid rgba(255,255,255,.18);border-radius:8px;background:rgba(255,255,255,.04);color:#fff;cursor:pointer;min-width:0}
.toolbar button b{font-size:14px}
.toolbar button span{font-size:12px;line-height:1.35;color:var(--band-muted)}
.toolbar button:hover{border-color:var(--brass-light)}
.toolbar button[aria-pressed="true"]{background:var(--brass-light);border-color:var(--brass-light);color:var(--band)}
.toolbar button[aria-pressed="true"] span{color:var(--band)}
@media (max-width:1000px){.toolbar{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.toolbar{display:flex;overflow-x:auto;scrollbar-width:none;margin-inline:-20px;padding-inline:20px}.toolbar::-webkit-scrollbar{display:none}.toolbar button{flex:0 0 150px}}
.seg2{grid-template-columns:repeat(2,minmax(0,1fr))}
/* câu hỏi thường gặp */
.faq{padding-block:8px 48px;display:flex;flex-direction:column;gap:10px}
.faq h2{margin-bottom:6px}
.faq details{background:var(--surface);border:1px solid var(--line);padding:14px 16px}
.faq summary{font-weight:600;cursor:pointer}
.faq details p{margin:8px 0 0;color:var(--muted);font-size:14px}
.poster-img{display:block;width:100%;height:auto;background:var(--sand)}
/* ví dụ trước/sau trong khung kết quả trống */
.examples{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:8px}
.examples figure{margin:0;display:flex;flex-direction:column;gap:6px}
.examples .pair{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:var(--sand)}
.examples img{width:100%;height:160px;object-fit:cover;display:block}
.examples figcaption{font-size:12.5px;color:var(--muted)}

.custom-pay{display:flex;flex-direction:column;gap:6px;margin-top:14px;padding:14px;border:1px dashed var(--line);border-radius:8px}
.custom-pay .quick{display:flex;flex-wrap:wrap;gap:6px}
.custom-pay .row{display:flex;gap:8px;align-items:center}
.custom-pay .amt{flex:1;display:flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:8px;padding:0 10px;background:var(--surface)}
.custom-pay .amt input{flex:1;min-width:0;border:0;background:transparent;font:inherit;font-size:16px;padding:10px 0;color:var(--ink);outline:0}
.custom-pay .amt:focus-within{border-color:var(--brass)}
.custom-pay .chip[aria-pressed="true"]{border-color:var(--brass);background:var(--brass-soft);color:var(--brass)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
/* tùy chọn nâng cao */
.adv{border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:var(--surface)}
.adv>summary{cursor:pointer;font-weight:600;font-size:14px;list-style-position:inside}
.adv>summary .muted{font-weight:400;font-size:13px}
.adv>summary b{color:var(--red)}
.adv[open]>summary{margin-bottom:10px}
.chips.multi .chip[aria-pressed="true"]{background:var(--brass);border-color:var(--brass);color:#fff}
.chips.multi .chip[aria-pressed="true"]::before{content:"✓ "}
/* vẽ đánh dấu */
.mark-open{width:100%;border-style:dashed}
.mark-sum{display:flex;gap:10px;align-items:flex-start;padding:8px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
.mark-sum img{width:96px;height:72px;object-fit:cover;border-radius:6px;flex:none}
.mark-sum>div{display:flex;flex-direction:column;gap:4px;font-size:13px;min-width:0}
.mark-sum .muted{overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.markdlg{width:min(980px,96vw);max-width:96vw;max-height:96vh;padding:14px;border:0;border-radius:10px;background:var(--surface);color:var(--ink);overflow:auto}
.markdlg::backdrop{background:rgba(0,0,0,.6)}
.mk-head{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:8px}
.mk-head h2{font-size:17px;margin:0 auto 0 0}
.mk-tools{margin:0}
.mk-size{display:flex;align-items:center;gap:6px;font-size:13px}
.mk-stage{display:flex;justify-content:center;background:#1d1b18;border-radius:8px;padding:6px}
#mk-canvas{width:100%;height:auto;touch-action:none;cursor:crosshair;border-radius:4px;display:block}
.mk-regions{list-style:none;padding:0;margin:8px 0;display:flex;flex-direction:column;gap:6px}
.mk-regions li{display:flex;gap:8px;align-items:center}
.mk-regions input{flex:1;min-width:0;font:inherit;font-size:16px;padding:8px 10px;border:1px solid var(--line);border-radius:6px}
.mk-dot{flex:none;width:26px;height:26px;border-radius:50%;color:#fff;font-weight:700;font-size:13px;display:grid;place-items:center;border:2px solid #fff;box-shadow:0 0 0 1px rgba(0,0,0,.2)}
@media (max-width:640px){.mk-head h2{flex-basis:100%}}