/* LevelQuants — vo web. JavaScript: CHI tk.*.js (nut Tai khoan, v9). */
:root{--nen:#0E1114;--panel:#141922;--panel2:#12161D;--vien:#242B35;--vien2:#1E242C;
--chu:#ECEFF3;--chu2:#C4CCD6;--mo:#AEB7C2;--mo2:#9AA4B2;--mo3:#78828F;--mo4:#6E7884;
--vang:#C9A24B;--vang2:#E7CB84;--xanh:#9FC7A6}
*{box-sizing:border-box}
body{margin:0;background:var(--nen);color:var(--chu);font-size:16px;line-height:1.55;
font-family:'Be Vietnam Pro',system-ui,-apple-system,Segoe UI,sans-serif;-webkit-text-size-adjust:100%}
a{color:var(--vang2);text-decoration:none}a:hover{color:#F2DDA3}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--vang2);outline-offset:2px}
img{max-width:100%;height:auto}
.d{font-family:'Noto Serif Display',Georgia,serif}
.m{font-family:'IBM Plex Mono',ui-monospace,monospace;font-variant-numeric:tabular-nums}
.wrap{max-width:1160px;margin:0 auto;padding-left:24px;padding-right:24px}
.skip{position:absolute;left:-9999px}.skip:focus{left:8px;top:8px;background:var(--vang);color:var(--nen);padding:10px 14px;border-radius:7px;z-index:9}

header{border-bottom:1px solid var(--vien2)}
.nav{display:flex;flex-wrap:wrap;align-items:center;gap:14px 26px;padding-top:20px;padding-bottom:20px}
.brand{display:flex;align-items:center;color:var(--chu);font-weight:700;font-size:20px}
.grow{flex:1 1 auto}
.navlink{color:var(--chu2);font-weight:500}
.lang{display:flex;border:1px solid #2C3540;border-radius:7px;overflow:hidden}
.lang a,.lang span{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:12px;font-weight:600;
padding:7px 11px;letter-spacing:.03em;line-height:1.3}
.lang .on{background:var(--vang);color:var(--nen)}
.lang .off{color:var(--mo2)}
.btn{display:inline-block;font-weight:600;padding:10px 17px;border-radius:7px;min-height:44px;line-height:24px}
.btn-v{background:var(--vang);color:var(--nen)}
.btn-g{border:1px solid #2C3540;color:var(--chu);font-weight:500}

.hero{display:flex;flex-wrap:wrap;gap:56px 48px;align-items:center;padding-top:80px;padding-bottom:48px}
.hero-txt{flex:999 1 460px;min-width:0}.hero-img{flex:1 1 420px;min-width:0}
.eyebrow{display:flex;align-items:center;gap:12px;color:var(--vang);font-size:14px;font-weight:500}
.eyebrow i{width:34px;height:1px;background:var(--vang);display:inline-block}
h1{font-size:58px;line-height:1.08;font-weight:600;margin:22px 0 0;letter-spacing:-.005em}
.lead{font-size:19px;color:var(--mo);margin:22px 0 0;max-width:30em;line-height:1.6}
.lead b{color:var(--chu);font-weight:600}

.routes{margin-top:30px;background:var(--panel);border:1px solid var(--vien);border-radius:12px;padding:20px}
.routes h2{font-size:13.5px;color:var(--mo2);margin:0 0 14px;font-weight:500;letter-spacing:.01em}
.route{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;justify-content:space-between;
padding:13px 0;border-top:1px solid var(--vien)}
.route:first-of-type{border-top:0;padding-top:0}
.route .txt{flex:1 1 230px;min-width:0}
.route .nhan{font-size:14.5px;font-weight:600;color:var(--chu)}
.route .phu{font-size:12.5px;color:var(--mo3);margin-top:3px;line-height:1.5}

/* ── lop tien ich (thay cho thuoc tinh style= noi tuyen, bi CSP chan) ── */
.pb40{padding-bottom:40px}.pb8{padding-bottom:8px}
.pt64{padding-top:64px;padding-bottom:24px}
.pt56{padding-top:56px;padding-bottom:72px}
.hep18{max-width:18em}.mb36{margin-bottom:36px}
.chan-hang{display:flex;gap:52px;flex-wrap:wrap}
.chan-cot{flex:1 1 340px;min-width:0}
.chan-ten{font-weight:700;font-size:20px}
.hang-nut{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.bar-trai{display:flex;align-items:baseline;gap:9px}
.gc{font-size:16px;font-weight:600}

/* ── O BIEU DO ──
   Khung the va nen nam o .trong, ⛔ o .shot: khi mo hop, .shot tro thanh lop
   phu toan man hinh con .trong van la cai the anh. ⛔ nhan ban the <img>. */
.neo{display:block;height:0;overflow:hidden}
.shot{margin:0}
.shot>.trong{position:relative;background:#0B0E11;border:1px solid var(--vien);
border-radius:14px;overflow:hidden}
.lift>.trong{box-shadow:0 22px 56px rgba(0,0,0,.52)}
.shotbar{display:flex;align-items:center;justify-content:space-between;gap:12px;
padding:10px 14px;border-bottom:1px solid var(--vien2);background:var(--panel2)}
.shotbar .t{font-size:12px;color:var(--mo2)}
.shotbar .r{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:10.5px;color:var(--mo4);letter-spacing:.02em}
.shot figcaption{padding:12px 15px;border-top:1px solid var(--vien2);color:var(--mo3);font-size:13px;line-height:1.55}
.cap{font-size:11.5px;color:var(--mo4);margin:11px 4px 0;text-align:center}

/* lien ket mo hop + nhan hien khi re chuot */
.to{display:block;position:relative;cursor:zoom-in;outline-offset:-2px}
.to>img{display:block;width:100%}
.to::after{content:"";position:absolute;inset:0;background:rgba(201,162,75,0);transition:background .16s ease}
.to:hover::after,.to:focus-visible::after{background:rgba(201,162,75,.055)}
.kinh{position:absolute;right:11px;bottom:11px;display:inline-flex;align-items:center;gap:7px;
padding:6px 11px;border-radius:9px;background:rgba(8,10,13,.88);border:1px solid var(--vien);
color:var(--chu2);font-size:11.5px;pointer-events:none;
opacity:0;transform:translateY(5px);transition:opacity .16s ease,transform .16s ease}
/* bieu tuong ve bang CSS — ⛔ ky tu dac biet, nen ⛔ bao gio thanh o vuong rong */
.kinh i{position:relative;display:inline-block;width:11px;height:11px;
border:1.5px solid var(--vang2);border-radius:2px}
.kinh i::before,.kinh i::after{content:"";position:absolute;left:50%;top:50%;background:var(--vang2)}
.kinh i::before{width:6px;height:1.5px;transform:translate(-50%,-50%)}
.kinh i::after{width:1.5px;height:6px;transform:translate(-50%,-50%)}
.to:hover .kinh,.to:focus-visible .kinh{opacity:1;transform:none}

/* ⛔ hien nen va nut dong khi hop dang dong */
.shot>.dong,.shot .x{display:none}

/* ── HOP PHONG TO: chinh o bieu do do tro thanh lop phu ── */
.shot:target{position:fixed;inset:0;z-index:120;margin:0;padding:28px;
display:flex;align-items:center;justify-content:center}
.shot:target>.dong{display:block;position:absolute;inset:0;background:#06080A;cursor:zoom-out}
.shot:target>.trong{z-index:1;max-width:100%;max-height:100%;
display:flex;flex-direction:column;border-radius:13px;box-shadow:0 30px 90px rgba(0,0,0,.72)}
.shot:target .to{cursor:zoom-out;min-height:0;display:flex}
/* anh bay o DUNG kich thuoc goc; hai dong max-* chi THU NHO khi man hinh hep —
   ⛔ bao gio keo vuot kich thuoc that, nen ⛔ bi mo. */
.shot:target .to>img{width:auto;height:auto;margin:auto;
max-width:min(100%,calc(100vw - 58px));max-height:calc(100vh - 160px)}
.shot:target .kinh,.shot:target .to::after{display:none}
/* chua cho nut dong, ⛔ de no de len nhan phai cua thanh tieu de */
.shot:target .shotbar{padding-right:52px}
.shot:target figcaption{font-size:12px;padding:10px 15px}
.shot:target .x{display:flex;position:absolute;top:8px;right:8px;z-index:2;
width:36px;height:36px;border-radius:10px;align-items:center;justify-content:center;
font-size:22px;line-height:1;color:var(--chu2);
background:rgba(16,20,26,.92);border:1px solid var(--vien)}
.shot:target .x:hover{color:#fff;border-color:var(--mo4);background:rgba(26,32,40,.96)}
html:has(.shot:target){overflow:hidden}
@media (prefers-reduced-motion:reduce){.kinh,.to::after{transition:none}}

.facts{display:flex;flex-wrap:wrap;border:1px solid var(--vien2);border-radius:12px;background:var(--panel2)}
.fact{flex:1 1 200px;padding:18px 22px;border-left:1px solid var(--vien2)}
.fact:first-child{border-left:0}
.fact b{display:block;font-family:'Noto Serif Display',Georgia,serif;font-size:19px;font-weight:600}
.fact span{display:block;font-size:13px;color:var(--mo3);margin-top:3px}

.intro{padding-top:56px;padding-bottom:8px}
h2{font-size:36px;font-weight:600;margin:0;letter-spacing:-.005em}
.intro p{color:var(--mo);margin:14px 0 0;max-width:48em;font-size:17px}

.row{display:flex;flex-wrap:wrap;gap:44px;align-items:center;padding-top:40px;padding-bottom:40px}
.row.rev{flex-direction:row-reverse}
.ci{flex:1 1 420px;min-width:0}.ci.wide{flex:1.5 1 520px}.ci.mid{flex:1.4 1 500px}
.ct{flex:1 1 340px;min-width:0}
.ct h3{font-family:'Noto Serif Display',Georgia,serif;font-size:26px;font-weight:600;margin:0}
.ct p{color:var(--mo);font-size:16px;margin:12px 0 0;line-height:1.6}
.bul{list-style:none;padding:0;margin:18px 0 0;display:flex;flex-direction:column;gap:10px;font-size:15px;color:#C9D2DC}
.bul li{display:flex;gap:11px}.bul li i{color:var(--vang);flex:none;font-style:normal}
.chip{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:13.5px;white-space:nowrap}
.chip.v{color:var(--vang);font-size:14px}
.band{padding-top:24px;padding-bottom:24px}
.stack{display:flex;flex-direction:column;gap:16px}

.steps{border-top:1px solid var(--vien);display:flex;flex-wrap:wrap;gap:24px;padding-top:28px}
.step{flex:1 1 220px;min-width:0}
.step .n{display:inline-flex;width:38px;height:38px;border:1px solid #2C3540;color:var(--mo2);
border-radius:50%;align-items:center;justify-content:center;font-weight:600;font-size:15px;
font-family:'IBM Plex Mono',ui-monospace,monospace}
.step:first-child .n{border-color:var(--vang);color:var(--vang)}
.step h3{font-size:17px;font-weight:600;margin:16px 0 5px}
.step p{color:var(--mo2);font-size:14.5px;margin:0;line-height:1.55}

.cta{background:var(--panel2);border:1px solid var(--vien);border-radius:16px;padding:52px 40px;text-align:center}
.cta h2{font-size:32px;margin:0 0 10px}
.cta p{color:var(--mo);margin:0 auto 26px;max-width:34em;font-size:17px}
.cta .ds{display:flex;flex-wrap:wrap;gap:13px;justify-content:center}
.cta .btn{padding:14px 26px;border-radius:9px}

footer{border-top:1px solid var(--vien2);margin-top:8px}
.fgrid{padding-top:36px;padding-bottom:36px;display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;align-items:flex-start}
.fcol{display:flex;flex-direction:column;gap:9px;font-size:14px}
.fcol .h{color:var(--mo4);font-size:12.5px}
.fcol a{color:var(--chu2)}
.fdisc{color:var(--mo3);font-size:13px;margin:11px 0 0;max-width:40em;line-height:1.6}
.fdisc b{color:var(--mo2);font-weight:600}
.copy{padding-bottom:30px;color:#5E6773;font-size:12.5px}

/* bang gia */
.ghead{padding-top:72px;padding-bottom:24px;text-align:center}
.pill{display:inline-block;font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:12.5px;
letter-spacing:.08em;color:var(--vang);border:1px solid #3A3320;background:#1A1710;
padding:5px 11px;border-radius:999px;text-transform:uppercase}
.ghead h1{font-size:40px;margin:18px 0 0}
.ghead p{color:var(--mo);margin:12px auto 0;max-width:36em}
.plans{max-width:900px;margin:0 auto;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:stretch}
.plan{background:var(--panel);border:1px solid var(--vien);border-radius:16px;padding:28px;display:flex;flex-direction:column}
.plan.main{border:1.5px solid var(--vang)}
.plan h2{font-family:'Noto Serif Display',Georgia,serif;font-size:22px;font-weight:600;margin:0}
.plan .sub{color:var(--mo);font-size:14.5px;margin:8px 0 0}
.badge{font-size:12px;font-weight:600;color:var(--vang);
border:1px solid #3A3320;background:#1A1710;border-radius:999px;padding:3px 9px}
.price{margin:20px 0 4px;display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.price .n{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:38px;font-weight:600}
.price .n.word{font-family:'Noto Serif Display',Georgia,serif;letter-spacing:-.01em}
.price .u{color:var(--mo2);font-size:15px}
.pnote{font-size:12px;color:var(--mo3);margin:0 0 18px}
.plan ul{list-style:none;padding:0;margin:0 0 22px;display:flex;flex-direction:column;gap:11px;font-size:15px}
.plan li{display:flex;gap:10px}.plan li i{flex:none;font-style:normal;color:var(--vang)}
.plan .go{flex:1 1 auto}
.plan .act{display:block;text-align:center;padding:13px;border-radius:10px;font-weight:700;min-height:44px}
.plan.sub2 h2,.plan.sub2 .price .n{color:var(--mo)}
.plan.sub2 .sub{color:var(--mo2)}
.plan.sub2 .price .u,.plan.sub2 .pnote{color:var(--mo3)}
.plan.sub2 ul{color:var(--mo2)}.plan.sub2 li i{color:var(--mo3)}
.invite{margin:0;text-align:center;border:1px dashed #3A434F;color:var(--mo3);font-weight:500;
padding:13px;border-radius:10px;font-size:14.5px}
.paynote{text-align:center;color:var(--mo4);font-size:13px;margin:18px 0 0}
.faq{max-width:820px;margin:0 auto;padding-top:56px;padding-bottom:56px}
.faq h2{font-size:30px;text-align:center;margin:0 0 24px}
.faq .qs{display:flex;flex-direction:column;gap:12px}
details{background:var(--panel);border:1px solid var(--vien);border-radius:12px;padding:0}
summary{cursor:pointer;font-weight:600;font-size:16px;color:var(--chu);min-height:24px;padding:16px 18px}
details[open] summary{padding-bottom:10px}
details p{color:var(--mo);font-size:15px;margin:0;padding:0 18px 16px}
summary:focus-visible{outline-offset:-3px;border-radius:11px}

/* trang van ban phap ly */
.doc{max-width:46em;padding-top:56px;padding-bottom:64px}
.doc h1{font-size:34px;margin:0 0 6px}
.doc .meta{color:var(--mo3);font-size:13px;margin:0 0 30px}
.doc h2{font-size:18px;font-weight:600;margin:30px 0 8px;color:var(--chu)}
.doc p{color:var(--mo);font-size:16px;line-height:1.75;margin:0 0 14px}
.doc p b,.doc p strong{color:var(--chu);font-weight:600}
.doc ol{color:var(--mo);font-size:16px;line-height:1.75;padding-left:22px;margin:0 0 14px}
.doc ol li{margin-bottom:12px}
.doc .lui{margin-top:36px;padding-top:20px;border-top:1px solid var(--vien)}

@media (max-width:860px){
  h1{font-size:40px}h2{font-size:28px}.ghead h1{font-size:32px}
  .hero{padding-top:48px;gap:36px}
  .plans{grid-template-columns:minmax(0,1fr)}
  .row{gap:28px;padding-top:28px;padding-bottom:28px}
  .cta{padding:36px 22px}
  .nav{column-gap:14px}
}
/* ═══ VI/EN: .lang{overflow:hidden} cat vien tieu diem ban phim ⇒ ve vien vao trong ═══ */
.lang a:focus-visible{outline-offset:-2px}

/* ═══ CAM UNG: ⛔ co re chuot ⇒ nhan Phong to luon hien ═══ */
@media (hover:none){.kinh{opacity:1;transform:none}}

/* ═══ MAN CAM UNG moi kho: vung bam toi thieu 44px (⛔ doi gi tren may tinh co chuot) ═══ */
@media (pointer:coarse){
  .brand{padding-top:7px;padding-bottom:7px}
  .navlink{padding-top:10px;padding-bottom:10px}
  .lang a,.lang span{padding-top:14.5px;padding-bottom:14.5px}
  .fcol{gap:0}
  .fcol a{padding:10px 0;min-height:44px}
  .doc .lui a{display:inline-block;padding:10px 0}
}

/* ═══ DAU TRANG ≤ 800px: 2 hang [ten ··· Mo bieu do] / [lien ket ··· VI|EN] — .grow lam cho xuong dong ═══ */
@media (max-width:800px){
  .nav{gap:4px 14px;padding-top:12px;padding-bottom:6px}
  .brand{order:1;margin-right:auto;padding:8px 0;font-size:18px}
  .nav>.btn{order:2;padding:9px 14px;font-size:14.5px;min-height:44px;line-height:26px}
  .grow{order:3;flex:0 0 100%;height:0}
  .navlink{order:4;font-size:14.5px;padding:11px 0}
  .lang{order:5;margin-left:auto}
  .lang a,.lang span{padding:14px 12px;font-size:12.5px}
  .nav{reading-flow:flex-visual}
}

/* ═══ DIEN THOAI ≤ 720px ═══ */
@media (max-width:720px){
  .wrap{padding-left:20px;padding-right:20px}

  h1{font-size:clamp(31px,9vw,38px);text-wrap:balance}
  h2{font-size:clamp(23px,6.6vw,27px);text-wrap:balance}
  .hero{padding-top:28px;padding-bottom:32px;gap:28px}
  .lead{font-size:17px}
  .routes{padding:16px}
  .route .phu{font-size:13.5px}
  .route .btn{flex:1 1 100%;text-align:center}
  .cap{font-size:12.5px}

  .facts .fact{flex-basis:100%;border-left:0;border-top:1px solid var(--vien2);padding:14px 18px}
  .facts .fact:first-child{border-top:0}
  .fact b{font-size:18px}

  .intro{padding-top:40px}
  .intro p{font-size:16px}
  .row{gap:20px;padding-top:22px;padding-bottom:22px}
  .ct h3{font-size:23px;text-wrap:balance}
  .band{padding-top:14px;padding-bottom:14px}

  /* thanh tieu de o bieu do: nhan phai xuong dong rieng khi chat, ⛔ bop thanh 2 dong */
  .shotbar{flex-wrap:wrap;row-gap:2px;padding:9px 12px}
  .shotbar .r{font-size:11.5px;white-space:nowrap}
  /* nhan Phong to thanh thanh rieng DUOI anh — ⛔ de len anh (anh rong chi cao ~85px) */
  .to{display:flex;flex-direction:column}
  .kinh{position:static;justify-content:center;opacity:1;transform:none;border:0;border-top:1px solid var(--vien2);
    border-radius:0;background:var(--panel2);padding:9px 12px;font-size:12.5px}

  .mb36{margin-bottom:24px}
  .pt64{padding-top:44px}
  .steps{gap:18px;padding-top:22px}
  .step{flex-basis:100%;display:grid;grid-template-columns:38px minmax(0,1fr);column-gap:14px;align-items:start}
  .step .n{grid-row:1 / span 2}
  .step h3{margin:7px 0 3px}

  .pt56{padding-top:40px;padding-bottom:48px}
  .cta{padding:32px 20px}
  .cta h2{font-size:clamp(23px,6.6vw,27px)}
  .cta p{font-size:16px}
  .cta .ds .btn{flex:1 1 100%;text-align:center}

  .fgrid{padding-top:28px;padding-bottom:24px;gap:22px}
  .chan-hang{gap:44px}
  .fcol{gap:0}
  .fcol .h{font-size:13px;margin-bottom:2px}
  .fcol a{padding:10px 0;min-height:44px}
  .copy{font-size:13px}

  .ghead{padding-top:40px}
  .ghead h1{font-size:clamp(27px,7.6vw,32px)}
  .plan{padding:22px}
  .price .n{font-size:32px}
  .pnote{font-size:13px}
  .faq{padding-top:40px;padding-bottom:40px}
  .faq h2{font-size:clamp(23px,6.6vw,27px)}

  .doc{padding-top:36px;padding-bottom:48px}
  .doc h1{font-size:clamp(26px,7.4vw,30px)}
}
@media (max-width:374px){.wrap{padding-left:16px;padding-right:16px}.nav{column-gap:12px}
  .lang a,.lang span{padding-left:9px;padding-right:9px}}
@media (max-width:359px){.brand{font-size:16px}
  .nav>.btn{padding:9px 11px;font-size:13.5px}.navlink{font-size:13.5px}.nav{column-gap:8px}
  .lang a,.lang span{padding-left:8px;padding-right:8px}}

/* ═══ HOP PHONG TO tren man cam ung hoac man hep: day man hinh, anh o DUNG kich thuoc goc, vuot de xem het ═══ */
@media (max-width:720px),(hover:none) and (pointer:coarse){
  .shot:target{padding:0}
  .shot:target>.trong{width:100%;height:100%;max-width:none;max-height:none;border:0;border-radius:0}
  .shot:target .shotbar{flex:none;flex-wrap:wrap;padding-right:62px}
  .shot:target .shotbar .r{display:none}
  .shot:target .shotbar::after{flex:1 0 100%;font-size:12px;color:var(--vang2)}
  html:lang(vi) .shot:target .shotbar::after{content:"Vu\1ED1 t \111 \1EC3  xem h\1EBF t \1EA3 nh"} /* = "Vuot de xem het anh" */
  html:lang(en) .shot:target .shotbar::after{content:"Swipe to see the whole chart"}
  .shot:target .to{flex:1 1 auto;min-height:0;display:flex;overflow:auto;overscroll-behavior:contain;cursor:auto}
  .shot:target .to>img{flex:none;margin:auto;max-width:none;max-height:none;width:auto;height:auto}
  .shot:target figcaption{flex:none}
  .shot:target .x{width:44px;height:44px;top:6px;right:8px}
}
/* ═══ HOP PHONG TO khi dien thoai xoay ngang: man chi cao ~390px ⇒ gon thanh tieu de, an chu thich (chu thich van o trang) ═══ */
@media (max-height:500px) and (orientation:landscape) and (hover:none) and (pointer:coarse){
  .shot:target .shotbar{padding-top:6px;padding-bottom:6px;min-height:50px;align-items:center}
  .shot:target .shotbar::after{flex:0 1 auto;margin-left:12px}
  .shot:target figcaption{display:none}
  .shot:target .x{top:3px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
/* ═══ NUT TAI KHOAN (v9) — the ho so do account.levelquants.com/the dung trong iframe KHAC NGUON (tk.*.js) ═══ */
.nav{position:relative}
.tk-nut{display:inline-flex;align-items:center;justify-content:center;flex:none;width:44px;height:44px;border-radius:50%;
  border:1px solid #2C3540;color:var(--chu2)}
.tk-nut:hover,.tk-nut[aria-expanded=true]{border-color:var(--vang);color:var(--vang2)}
.tk-nut svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
.tk-khung{position:absolute;right:24px;top:100%;margin-top:6px;width:340px;max-width:calc(100vw - 32px);z-index:20;
  background:var(--panel);border:1px solid var(--vien);border-radius:12px;box-shadow:0 14px 40px rgba(0,0,0,.55);overflow:hidden}
.tk-khung[hidden]{display:none}
.tk-khung:focus{outline:none}
.tk-cho,.tk-du{margin:0;padding:16px}
.tk-cho{color:var(--mo2);font-size:14px}
.tk-du p{margin:0 0 12px;color:var(--chu2);font-size:14px;line-height:1.5}
.tk-du .btn{display:block;text-align:center}
.tk-the{display:block;width:100%;height:1px;border:0;visibility:hidden;position:absolute;left:0;top:0}
.tk-the.hien{position:static;visibility:visible}
/* Hang dang xuat o cuoi khung tai khoan */
.tk-dx{margin:0;padding:10px 16px 12px;border-top:1px solid var(--vien);color:var(--mo2);font-size:13px;line-height:1.45}
.tk-dx a{color:var(--vang2);font-weight:600;text-decoration:none}
.tk-dx a:hover{text-decoration:underline}
.tk-dx a:focus-visible{outline:2px solid var(--vang2);outline-offset:2px;border-radius:3px}
/* Hang dang xuat chi hien cung the tai khoan */
.tk-dx{display:none}
.tk-the.hien~.tk-dx:not([hidden]){display:block}
@media (max-width:800px){.nav>.tk-nut{order:2}}
@media (max-width:720px){.tk-khung{left:20px;right:20px;width:auto;max-width:none}}
@media (max-width:374px){.tk-khung{left:16px;right:16px}}

/* ═══ NUT TAI KHOAN — KHO ≤ 1000px: chi bieu tuong (⛔ vien tron), vung bam VAN 44×44.
   · margin-left = −column-gap cua .nav (GIU DONG BO voi v8: 26 / ≤860 14 / ≤374 12 / ≤359 8) ⇒ sat nut "Mo bieu do";
     bieu tuong 20px nam giua hop 44 ⇒ van cach nut do 12px.
   · margin-right −12px: hop an 12px vao le phai .wrap (le 16–24px) ⇒ bieu tuong thang mep noi dung, ⛔ tran ngang.
   ⇒ hang 1 chi ton 32px cho nut (thay vi 44 + khoang cach) — giu dau trang v8 DUNG 2 hang tu 320 toi 800px,
     1 hang tu 801px (do: KET_QUA_VO_WEB_V9 §bo cuc). ═══ */
@media (max-width:1000px){.nav>.tk-nut{border-color:transparent;margin-left:-26px;margin-right:-12px}}
@media (max-width:860px){.nav>.tk-nut{margin-left:-14px}}
@media (max-width:374px){.nav>.tk-nut{margin-left:-12px}}
@media (max-width:359px){.nav>.tk-nut{margin-left:-8px}}
/* chu tieng Anh dai hon ("Open the chart") ⇒ gon nut do o man hep; tieng Viet GIU NGUYEN v8 */
@media (max-width:389px){html:lang(en) .nav>.btn{padding-left:9px;padding-right:9px;font-size:14px}}
@media (max-width:359px){html:lang(en) .nav>.btn{font-size:13.5px}}
@media (max-width:339px){.brand{font-size:15px}
  html:lang(en) .nav>.btn{padding-left:8px;padding-right:8px;font-size:13px}}

/* ═══ v12 — MUC "HUONG DAN DOC HIEU" (/huong-dan · /en/guide) ═══
   Dau trang: man < 1080px CHI giu lien ket sang TRANG KHAC — an lien ket nhay trong trang (.nl-an: Tinh nang · Cach dung ·
   Bang gia#gia · Hoi dap) va "Trang chu" (logo da dan ve trang chu) ⇒ dau trang van DUNG 1 hang tu 801px, 2 hang tu 320 toi 800px
   nhu v11 sau khi them muc moi. Tu 1080px hien du (do may: v12 dung 1 hang moi trang tu 1080px). ═══ */
@media (max-width:1149px){.nav>.navlink.nl-an{display:none}}
.navlink[aria-current=page]{color:var(--vang2)}

/* ── TRANG HUONG DAN: moi luat duoi day chi trong main.hd ── */
.hd-khung{display:grid;grid-template-columns:minmax(0,1fr);padding-top:44px;padding-bottom:64px}
.hd-ml{display:none}
.hd-noi{min-width:0;max-width:860px}
.hd-dau{padding-bottom:26px;border-bottom:1px solid var(--vien2)}
.hd-dau h1{font-size:46px;margin:18px 0 0}
.hd-dau .lead{max-width:36em}
.hd-moc{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:12.5px;line-height:1.6;color:var(--mo2);margin:16px 0 0;max-width:62em}
.hd-chu{margin:26px 0 0;padding:4px 0 4px 16px;border-left:3px solid var(--vang);color:var(--chu2);font-size:16px;line-height:1.65;max-width:46em}
.hd-kh{margin:14px 0 0;color:var(--mo2);font-size:14.5px;line-height:1.65;max-width:52em}
.hd strong{color:var(--chu);font-weight:600}

/* muc luc: may tinh = cot trai dinh; man hep = hop dong mo o dau trang */
.hd ol.ml{list-style:none;margin:0;padding:0}
.hd ol.ml ol{list-style:none;margin:2px 0 6px;padding:0}
.hd-ml-t{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--mo2);margin:0 0 8px}
.hd ol.ml a{display:block;color:var(--mo2);font-size:13.5px;line-height:1.4;padding:4px 0}
.hd ol.ml a:hover{color:var(--vang2)}
.hd ol.ml>li>a{color:var(--chu);font-weight:600;margin-top:8px}
.hd ol.ml>li:first-child>a{margin-top:0}
.hd ol.ml ol a{padding-left:12px}
.hd ol.ml .so{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:11.5px;color:var(--vang);margin-right:7px}
.hd-ml-dd{margin:22px 0 0}
.hd-ml-dd ol.ml{padding:0 18px 14px}

/* phan + tieu de */
.hd h2{font-size:30px;margin:64px 0 0;scroll-margin-top:16px}
.hd-gt{color:var(--mo);font-size:16px;line-height:1.65;margin:12px 0 0;max-width:46em}

/* bang 4 quy uoc dau GEX */
.hd-bang{margin:18px 0 0;border:1px solid var(--vien);border-radius:12px;overflow:hidden;background:var(--panel2)}
.hd-bang table{width:100%;border-collapse:collapse;font-size:14.5px;line-height:1.55}
.hd-bang th,.hd-bang td{text-align:left;vertical-align:top;padding:13px 15px}
.hd-bang thead th{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:11.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--mo2);border-bottom:1px solid var(--vien)}
.hd-bang tbody tr+tr th,.hd-bang tbody tr+tr td{border-top:1px solid var(--vien2)}
.hd-bang tbody th{color:var(--chu);font-weight:600;width:17%}
.hd-bang td{color:var(--chu2)}
.hd-bang code{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:13px;line-height:1.6;color:var(--vang2)}

/* tung bieu do */
.hd-muc{margin-top:30px;padding-top:28px;border-top:1px solid var(--vien2);scroll-margin-top:12px}
.hd-gt+.hd-muc{margin-top:26px}
.hd-so{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--vang);margin:0}
.hd-muc h3{font-family:'Noto Serif Display',Georgia,serif;font-size:24px;font-weight:600;line-height:1.25;margin:6px 0 16px}
.hd .shot .shotbar{display:none}
.hd .shot:target .shotbar{display:flex}
.hd .shot.hep:not(:target)>.trong{width:fit-content;max-width:100%}
.hd .shot.hep:not(:target) .to>img{width:auto;max-width:100%}
/* anh mong (rong/cao > 10): nhan Phong to nam DUOI anh o moi kho — ⛔ de len anh chi cao 20–60px */
.hd .shot.mong:not(:target) .to{display:flex;flex-direction:column}
.hd .shot.mong:not(:target) .kinh{position:static;justify-content:center;opacity:1;transform:none;border:0;border-top:1px solid var(--vien2);
  border-radius:0;background:var(--panel2);padding:9px 12px;font-size:12.5px}
.hd-4{margin:18px 0 0}
.hd-4>div{display:grid;grid-template-columns:172px minmax(0,1fr);column-gap:24px;padding:11px 0;border-top:1px solid var(--vien2)}
.hd-4>div:first-child{border-top:0;padding-top:4px}
.hd-4 dt{font-size:12px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--mo2);padding-top:3px;line-height:1.5}
.hd-4 dd{margin:0;color:var(--chu2);font-size:15.5px;line-height:1.65;min-width:0}
.hd-4 .luu dt{color:var(--vang2)}

/* quy trinh · ket hop · nang cao */
.hd-the{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,330px),1fr));gap:16px;margin:20px 0 0}
.hd-the>section{background:var(--panel);border:1px solid var(--vien);border-radius:12px;padding:18px 20px}
.hd-the h3{font-family:'Noto Serif Display',Georgia,serif;font-size:19px;font-weight:600;line-height:1.3;margin:0 0 10px}
.hd-the ul{margin:0;padding-left:18px;color:var(--chu2);font-size:15px;line-height:1.6}
.hd-the li+li{margin-top:6px}
.hd-the li::marker{color:var(--vang)}
.hd-the p{margin:0;color:var(--chu2);font-size:15px;line-height:1.65}
.hd-the p.gh{margin-top:12px;padding-top:10px;border-top:1px solid var(--vien2);color:var(--mo2);font-size:14px}
.hd-the p.gh strong{color:var(--vang2)}
.hd-mien{margin:56px 0 0;padding:16px 18px;border:1px solid var(--vien);border-radius:12px;background:var(--panel2);color:var(--mo2);font-size:14px;line-height:1.65}

@media (min-width:1024px){
  .hd-khung{grid-template-columns:236px minmax(0,1fr);column-gap:52px}
  .hd-ml{display:block;position:sticky;top:0;align-self:start;max-height:100vh;overflow-y:auto;overscroll-behavior:contain;
    padding:24px 8px 32px 0;scrollbar-width:thin}
  .hd-ml-dd{display:none}
}
@media (max-width:860px){
  .hd-dau h1{font-size:38px}
  .hd h2{font-size:27px;margin-top:52px}
  .hd-bang thead{display:none}
  .hd-bang tr{display:block;padding:12px 15px}
  .hd-bang tbody tr+tr{border-top:1px solid var(--vien)}
  .hd-bang tbody th,.hd-bang td{display:grid;grid-template-columns:minmax(0,7.5em) minmax(0,1fr);column-gap:12px;width:auto;padding:5px 0;border:0}
  .hd-bang tbody tr+tr th,.hd-bang tbody tr+tr td{border-top:0}
  .hd-bang tbody th::before,.hd-bang td::before{content:attr(data-nhan);color:var(--mo2);font-size:12.5px;font-weight:500;padding-top:1px}
}
@media (max-width:720px){
  .hd-khung{padding-top:28px;padding-bottom:48px}
  .hd-dau h1{font-size:clamp(28px,8vw,34px)}
  .hd-dau .lead{font-size:16.5px}
  .hd h2{font-size:clamp(22px,6.4vw,26px);margin-top:44px}
  .hd-muc h3{font-size:21px}
  .hd-4>div{grid-template-columns:minmax(0,1fr);row-gap:3px}
  .hd-4 dd{font-size:15.5px}
  .hd-the>section{padding:16px}
}
@media (pointer:coarse){
  .hd ol.ml a{padding-top:12.6px;padding-bottom:12.6px}  /* 13.5px × 1.4 + 2 × 12.6 = 44.1px */
  .hd ol.ml>li>a{margin-top:0}
  .hd-ml-dd summary{min-height:44px}
}

/* ═══ v13 — LIEN KET "MAY TINH" (.nl-mt) ═══
   Them muc thu tu cho dau trang. Do may (Chromium + phong that, moi trang × 320–1920px):
   · lien ket trong trang (.nl-an) nay an toi 1149px (v12: 1079px) ⇒ tu 1150px moi trang van 1 hang;
   · trang tieng Viet an .nl-mt o ≤ 429px va 801–895px ⇒ van dung 2 hang tu 320 toi 800px, 1 hang tu 801px.
   Trang tieng Anh hien .nl-mt o moi kho. Chan trang luon co lien ket May tinh. ═══ */
@media (max-width:429px){html:lang(vi) .nav>.navlink.nl-mt{display:none}}
@media (min-width:801px) and (max-width:895px){html:lang(vi) .nav>.navlink.nl-mt{display:none}}

/* ═══ v14 — LOGO "VONG TU" BAN DONG: dau trang (.brand) + chan trang (.chan-ten) ═══
   Thay huy hieu chu "LQ" (.mark — da bo, cung cac dong gap/.mark o ≤800 · ≤359 · ≤339) bang symbol SVG noi tuyen
   dat CUNG DONG voi chu LevelQuants (van la chu that, Noto Serif Display 700 ⇒ doc may/SEO giu nguyen).
   Luat lockup (Design System LevelQuants): vong = 1 em cua chu · day thanh vang nam DUNG baseline · net chu L cach dau thanh 0,36 em
   ⇒ moi kich thuoc tinh bang em, tu co gian theo font-size cua .brand o moi diem gay (20 / ≤800 18 / ≤359 16 / ≤339 15px).
   · rong 1.191em = 119.098/100 (viewBox symbol)
   · vertical-align −.1663em = −(100 − 83.374)/100 ⇒ day thanh vang (y 83.374) nam DUNG baseline cua chu
   · margin-right .332em = 0,36em − le trai cua net chu L (0,028em)
   · SVG CHI dung thuoc tinh trinh bay (fill, stop-color…) — CSP style-src 'self' chan style= va <style> noi tuyen.
   · id gradient rieng moi cho: dau trang *-lq-dau, chan trang *-lq-chan (⛔ trung id trong cung trang).
   · Bong bong tren vong (.lq-bot) chi hien o man mat do diem anh ≥ 1,5 (dien thoai, retina);
     man 1× giu ban tron — vong 20px o 1× bong bong chi con 1–2 diem anh, nhin nhu hat nhieu.
   · chan trang: chu 20px/700 (v13: 18px/600) = co + net cua lockup chuan, giong dau trang.
   Do may (Chromium + font that, CSP that; 12 trang × 320–1920px chuot + 320–1366px cam ung):
   · .brand hep hon v13 7,2–10,6px; chieu cao dau trang + so hang GIU NGUYEN nhu v13 o moi be rong,
     TRU 861–867px o 5 trang tieng Anh (tat ca tru /en/pricing): v13 xuong 2 hang (thieu 6,6px) ⇒ v14 1 hang (du 4,0px — cho chat nhat cua v14).
   · lech day thanh vang so voi baseline ≤ 0,02px o moi co chu; ⛔ tran ngang; ⛔ vi pham CSP. ═══ */
.lq-lockup{white-space:nowrap}
.lq-vong{display:inline-block;width:1.191em;height:1em;margin-right:.332em;vertical-align:-.1663em;overflow:visible}
.lq-vong .lq-bot{display:none}
@media (min-resolution:1.5dppx),(-webkit-min-device-pixel-ratio:1.5){.lq-vong .lq-bot{display:inline}}

/* ═══ v16 — (1) CHAN TRANG: motif "muc gia + bong bong" noi tiep thanh vang cua logo (nhu dau thu email) ═══
   · <span class="lq-muc"> dat NGAY SAU chu LevelQuants, cung dong ⇒ canh theo baseline nhu symbol (⛔ phu thuoc font):
     hop cao 2.4em, vertical-align −.9em ⇒ dinh 1.5em tren baseline, day .9em duoi baseline;
     muc vang trong SVG o y = (1.5 − .068)em = tam thanh vang cua logo (.068em tren baseline).
   · rong = phan con lai cua cot (calc(100% − 8.55em): 1.191 symbol + .332 khe + 6.367 chu + .6 cach), toi da 17.45em
     ⇒ mep phai motif thang mep doan mien tru (40em × 13px = 520px = 26em × 20px).
   · anh nen = tep SVG cung nguon (img-src 'self'), CHI thuoc tinh trinh bay; mask lam mo hai dau.
   · .chan-ten overflow:hidden: font du phong rong/hep khac ⇒ motif bi cat gon trong cot, ⛔ tran ngang.
   · dong logo chan trang cao 31 → 48px (motif cao hon dong chu); doan mien tru van cach 11px, ⛔ de len chu. ═══ */
.chan-ten{overflow:hidden}
.lq-muc{display:inline-block;width:calc(100% - 8.55em);max-width:17.45em;height:2.4em;margin-left:.6em;vertical-align:-.9em;
background:url(img/chan-muc.9c8fc934.svg) 0 0/auto 100% no-repeat;
-webkit-mask-image:linear-gradient(90deg,transparent,#000 2.4em,#000 72%,transparent);
mask-image:linear-gradient(90deg,transparent,#000 2.4em,#000 72%,transparent)}

/* ═══ v16 — (2) XUONG DONG THAM MY ═══
   · tieu de, lead, chu thich, mien tru, muc luc (khoi ngan 1–4 dong): text-wrap balance (cac dong dai deu, ⛔ dong cuoi 1 tu);
     doan nhieu cau (.hd-chu, .hd-gt, .ct p…) va moi doan con lai: text-wrap pretty (lap day dong, tranh tu mo coi). Chi trong main + footer ⇒ dau trang GIU NGUYEN (do may).
   · noi dung: &nbsp; giua so–don vi (10 phut, 07:20 CT), quanh → ×, truoc gach dai —, sau mao tu (a/an/the · cac/nhung/mot…),
     giua 2 tu cuoi cua khoi (tu cuoi ≤ 12 ky tu), trong cum ten san pham (gold OG, CME GC/OG, cổ phiếu Mỹ…);
     tu ghep co gach / gach cheo (Gamma-Flip, 16:00–17:00, xanh/đỏ, ≤ 20 ky tu) boc span.nw;
     tieng Viet: ~110 tu ghep linh vuc (biểu đồ, tín hiệu, quyền chọn, thị trường…) dan bang &nbsp; ⇒ ⛔ ngat giua cac am tiet.
   · span.nw dat SAU .fact span{display:block} ⇒ ⛔ bien span.nw thanh khoi khi nam trong .fact. ═══ */
main,footer{text-wrap:pretty}
main h1,main h2,main h3,main h4,.lead,.cap,.fdisc,.hd ol.ml a,.route .phu,.step p,.fact span,figcaption,summary{text-wrap:balance}
span.nw{display:inline;white-space:nowrap}
#lq-lab{text-wrap:wrap} /* may tinh quyen chon (giao dien do mt.*.js dung): tra ve xuong dong mac dinh, ⛔ ap pretty len ung dung */

/* ═══ v16 — (3) DAU TRANG: cung motif, dat trong khoang trong giua logo va menu ═══
   · <span class="grow"> (khoang dan) chua <span class="lq-muc-dau">: hop cao 2.4em canh baseline nhu chan trang, nhung margin
     tren/duoi −1.5em/−.9em ⇒ hop margin cao 0 ⇒ ⛔ lam cao dong. .grow dung CUNG ho font / dam / co chu voi chu logo
     ('Noto Serif Display' cua .d · 700 · 20/18/16/15px nhu .brand) va line-height ke thua nhu logo ⇒ hop dong cua .grow = hop dong
     cua logo, ca hai can giua hang ⇒ hai baseline trung nhau ⇒ muc vang trung tam thanh vang logo (⛔ phu thuoc font).
     ⛔ Doi font / co chu / dam cua logo ma quen doi o day (kiem: _dau_check.js).
   · ngang: bat dau .6em sau chu LevelQuants, dung .6em truoc muc menu ke tiep (≤800px: truoc nut "Mo bieu do").
     --gl/--gr = khoang cot (column-gap) cua .nav o tung moc 26 / 14 / 14 / 12 / 8px ⇒ ⛔ sua gap .nav ma quen sua o day.
   · bo cuc ⛔ doi: .grow flex-basis 0 + min-width 0 (giong span rong cu: rong = cho trong con lai).
     ≤800px: .grow len dong 1 (order 1, flex 1, margin-left −gap ⇒ tong do rong dong 1 KHONG doi, thay cho margin-right:auto
     cua .brand); .nav::after thay .grow lam "ngat dong" truoc hang menu (order 3, rong 100%, cao 0).
   · hop qua hep ⇒ an (container query: span con 100% cua .lq-muc-dau la container — ⛔ dat container len chinh hop canh baseline,
     de containment ⛔ anh huong baseline o trinh duyet khac): may tinh < 2.4em (48px — trang chu menu dai van con motif gon
     ~50–70px); ≤800px < 3.6em (dien thoai hep: giu dong 1 thoang, ⛔ chen motif vao khe ~20–60px). mask lam mo hai dau
     (dau trai min(2.4em, 22%) de hop hep van thay muc gia; dau phai mo tu 56% va trong han tu 90% ⇒ tan dan TRUOC menu,
     bong sat mep phai ⛔ thanh cham lac canh chu menu). pointer-events none: ⛔ che bam. ═══ */
.grow{flex-basis:0;min-width:0;font-family:'Noto Serif Display',Georgia,serif;font-size:20px;font-weight:700;--gl:26px;--gr:26px}
.lq-muc-dau{display:inline-block;vertical-align:baseline;height:2.4em;margin:-1.5em 0 -.9em calc(.6em - var(--gl));
width:calc(100% + var(--gl) + var(--gr) - 1.2em);max-width:24em;pointer-events:none}
.lq-muc-dau>span{display:block;height:100%;container-type:inline-size}
.lq-muc-dau>span>span{display:block;height:100%;background:url(img/dau-muc.e84eea91.svg) 0 0/auto 100% no-repeat;
-webkit-mask-image:linear-gradient(90deg,transparent,#000 min(2.4em,22%),#000 56%,transparent 90%);
mask-image:linear-gradient(90deg,transparent,#000 min(2.4em,22%),#000 56%,transparent 90%)}
@container (max-width:2.4em){.lq-muc-dau>span>span{display:none}}
@media (max-width:860px){.grow{--gl:14px;--gr:14px}}
@media (max-width:800px){.grow{order:1;flex:1 1 0;height:auto;margin-left:-14px;font-size:18px;--gl:0px;--gr:14px}
.nav::after{content:"";order:3;flex:0 0 100%;height:0}
@container (max-width:3.6em){.lq-muc-dau>span>span{display:none}}}
@media (max-width:374px){.grow{margin-left:-12px;--gr:12px}}
@media (max-width:359px){.grow{margin-left:-8px;--gr:8px;font-size:16px}}
@media (max-width:339px){.grow{font-size:15px}}