@font-face{font-family:"Bricolage";font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/fonts/bg-vi.woff2) format("woff2");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}
@font-face{font-family:"Bricolage";font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/fonts/bg-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Bricolage";font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/fonts/bg-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{
  --navy:#13254A;
  --navy-2:#2B4472;
  --gold:#FFC93C;
  --gold-2:#F2B100;
  --paper:#F2F5FB;
  --white:#FFFFFF;
  --line:#D6DDEB;
  --mint:#0B7F57;
  --muted:#4E5D7A;
  --font:"Bricolage",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --wrap:1120px;
  color-scheme:light;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--navy);font:400 1.0625rem/1.65 var(--font);font-optical-sizing:auto;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
a{color:inherit;text-decoration-thickness:.08em;text-underline-offset:.2em}
:focus-visible{outline:3px solid var(--navy-2);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
h1,h2,h3{text-wrap:balance}
.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:16px;top:12px;background:#fff;padding:8px 14px;z-index:20;border-radius:8px}

/* Header */
.top{border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;flex-wrap:wrap;gap:10px 30px;padding-top:14px;padding-bottom:14px}
.brand{display:inline-flex;align-items:center;gap:9px;font-weight:800;font-size:1.32rem;letter-spacing:-.025em;text-decoration:none;line-height:1}
.brand svg{width:30px;height:30px;flex:none}
.nav{display:flex;flex-wrap:wrap;gap:2px 22px;font-size:.98rem;font-weight:500}
.nav a{text-decoration:none;padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a[aria-current="page"]{border-bottom-color:var(--gold-2)}
.top .btn{margin-left:auto}
@media (max-width:760px){
  .nav{order:3;width:100%;gap:0 18px;font-size:.95rem}
}

/* Buttons */
.btn{display:inline-block;padding:14px 22px;border-radius:12px;border:2px solid var(--navy);font:700 1rem/1.2 var(--font);text-decoration:none;text-align:center;cursor:pointer;transition:background-color .15s,color .15s,border-color .15s}
.btn-gold{background:var(--gold);border-color:var(--gold);color:var(--navy)}
.btn-gold:hover{background:var(--gold-2);border-color:var(--gold-2)}
.btn-line{background:transparent;color:var(--navy)}
.btn-line:hover{background:var(--navy);color:#fff}
.btn-sm{padding:9px 15px;font-size:.94rem;border-radius:10px}

/* Hero */
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:start;padding-top:64px;padding-bottom:84px}
.hero h1{font-size:clamp(2.45rem,5.4vw,4.3rem);line-height:1.08;font-weight:800;letter-spacing:-.035em;margin:0 0 22px;max-width:13ch}
.lede{font-size:1.2rem;line-height:1.55;color:var(--muted);max-width:33em;margin:0 0 30px}
.cta{display:flex;flex-wrap:wrap;gap:12px}
.fine{font-size:.93rem;color:var(--muted);margin:16px 0 0}

/* Receipt calculator: the one loud element */
.printer{width:100%;max-width:380px;justify-self:end;margin-top:6px}
.printer::before{content:"";display:block;position:relative;z-index:1;height:16px;margin:0 -16px;border-radius:999px;background:var(--navy);box-shadow:inset 0 -5px 0 #0A1834}
.paper{margin:-8px 4px 0;filter:drop-shadow(0 18px 20px rgba(19,37,74,.16)) drop-shadow(0 2px 2px rgba(19,37,74,.08))}
.receipt{--z:14px;background:#fff;padding:30px 24px calc(30px + var(--z));
  -webkit-mask:conic-gradient(from -45deg at bottom,#0000,#000 1deg 89deg,#0000 90deg) 50%/var(--z) 100%;
  mask:conic-gradient(from -45deg at bottom,#0000,#000 1deg 89deg,#0000 90deg) 50%/var(--z) 100%;
  animation:print 1.15s cubic-bezier(.2,.7,.2,1) .25s both}
@keyframes print{from{clip-path:inset(0 0 100% 0);transform:translateY(-14px)}to{clip-path:inset(0 0 0 0);transform:none}}
@media (prefers-reduced-motion:reduce){.receipt{animation:none}}
.r-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding-bottom:14px;border-bottom:2px dashed var(--line)}
.r-head strong{font-size:1.08rem}
.r-head span{font-size:.85rem;color:var(--muted)}
.r-field{margin:18px 0 0}
.r-field label{display:flex;justify-content:space-between;font-weight:600;font-size:.95rem;margin-bottom:8px}
.r-field output{font-weight:800;font-variant-numeric:tabular-nums}
.money{display:flex;align-items:center;gap:8px;border:2px solid var(--line);border-radius:10px;padding:0 14px;transition:border-color .15s}
.money:focus-within{border-color:var(--navy-2)}
.money input{flex:1;min-width:0;border:0;outline:0;background:transparent;font:800 1.4rem/1 var(--font);color:var(--navy);padding:12px 0;font-variant-numeric:tabular-nums}
.money span{font-weight:700;color:var(--muted)}
input[type="range"]{width:100%;accent-color:var(--navy);margin:0;height:28px}
.r-lines{margin:20px 0 0}
.r-line{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:12px 0;border-top:2px dashed var(--line);font-variant-numeric:tabular-nums}
.r-line b{font-weight:700}
.r-total{padding-top:14px}
.r-total span{font-weight:700;line-height:1.3}
.r-total strong{font-size:2.35rem;line-height:1;font-weight:800;letter-spacing:-.03em;color:var(--mint);white-space:nowrap}
.r-note{font-size:.85rem;color:var(--muted);line-height:1.5;margin:6px 0 0}

@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr;gap:44px;padding-top:40px;padding-bottom:64px}
  .printer{justify-self:start;max-width:420px;margin-left:12px;width:calc(100% - 24px)}
}

/* Sections */
.sec{padding:76px 0;border-top:1px solid var(--line)}
.sec h2{font-size:clamp(1.85rem,3.6vw,2.7rem);line-height:1.12;letter-spacing:-.028em;margin:0 0 16px;font-weight:800;max-width:20ch}
.intro{max-width:40em;color:var(--muted);font-size:1.12rem;margin:0 0 40px}
.more{font-weight:600}

/* Money flow */
.flow{list-style:none;margin:0 0 30px;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));position:relative}
.flow::before{content:"";position:absolute;top:13px;left:14px;right:8%;height:3px;background:var(--navy)}
.flow li{position:relative;padding:48px 32px 0 0}
.flow li::before{content:"";position:absolute;top:0;left:0;width:29px;height:29px;border-radius:50%;background:var(--gold);box-shadow:inset 0 0 0 3px var(--navy)}
.flow li:last-child::before{background:var(--mint)}
.flow b{display:block;font-size:1.22rem;line-height:1.3;margin-bottom:6px}
.flow p{margin:0;color:var(--muted)}
@media (max-width:760px){
  .flow{grid-template-columns:1fr;gap:30px}
  .flow::before{top:14px;bottom:30px;left:13px;right:auto;width:3px;height:auto}
  .flow li{padding:0 0 0 50px}
}

/* Steps: a real sequence, so numbers carry meaning */
.steps{list-style:none;counter-reset:s;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}
.steps li{counter-increment:s;border-top:3px solid var(--navy);padding-top:18px}
.steps li::before{content:counter(s);display:block;font-size:4.6rem;font-weight:200;line-height:.9;letter-spacing:-.04em;margin-bottom:14px;color:var(--navy-2)}
.steps h3{font-size:1.28rem;line-height:1.25;margin:0 0 8px;letter-spacing:-.01em}
.steps p{margin:0;color:var(--muted)}
.tip{margin:40px 0 0;padding:16px 20px;background:#fff;border-left:5px solid var(--gold-2);max-width:48em;border-radius:0 8px 8px 0}
@media (max-width:760px){.steps{grid-template-columns:1fr;gap:30px}}

/* Perks */
.perks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
.perk{padding:4px 40px 4px 0}
.perk+.perk{padding:4px 0 4px 40px;border-left:2px dashed var(--line)}
.big{font-size:clamp(3.2rem,7vw,5.4rem);font-weight:800;line-height:1.12;letter-spacing:-.045em;margin:0 0 12px}
.big small{font-size:.38em;font-weight:600;letter-spacing:-.01em;margin-left:6px}
.perk p{margin:0;max-width:26em}
.small{font-size:.9rem;color:var(--muted)}
.perks + .small{margin-top:32px}
@media (max-width:760px){
  .perks{grid-template-columns:1fr;gap:30px}
  .perk,.perk+.perk{padding:0;border-left:0}
  .perk+.perk{padding-top:30px;border-top:2px dashed var(--line)}
}

/* Guides list */
.guides{list-style:none;margin:0;padding:0;border-top:3px solid var(--navy)}
.guides li{border-bottom:1px solid var(--line)}
.guides a{display:block;padding:20px 0;text-decoration:none}
.guides strong{display:block;font-size:1.22rem;line-height:1.3;letter-spacing:-.01em}
.guides span{display:block;color:var(--muted);margin-top:4px}
.guides a:hover strong{text-decoration:underline;text-decoration-thickness:.08em;text-underline-offset:.2em}

/* FAQ */
.faq{max-width:48em;border-top:3px solid var(--navy)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:18px 44px 18px 0;font-weight:700;font-size:1.12rem;line-height:1.4;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:11px;font-size:1.7rem;font-weight:300;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
@media (prefers-reduced-motion:reduce){.faq summary::after{transition:none}}
.faq details p{margin:0 0 20px;color:#26365A;max-width:44em}

/* Footer */
.foot{background:var(--navy);color:#D7DFEF;padding:52px 0 40px}
.foot .brand{color:#fff}
.foot a{color:#fff}
.disc{max-width:54em;font-size:.95rem;line-height:1.65;margin:18px 0 26px}
.foot nav{display:flex;flex-wrap:wrap;gap:8px 24px;font-weight:500}
.copy{margin:26px 0 0;font-size:.86rem;color:#A3B2D1}

/* Article */
.art .wrap{max-width:780px}
.crumb{font-size:.92rem;color:var(--muted);padding-top:30px}
.crumb a{color:var(--muted)}
.art h1{font-size:clamp(2.05rem,4.6vw,3.15rem);line-height:1.12;letter-spacing:-.032em;margin:12px 0 14px;font-weight:800}
.meta{color:var(--muted);font-size:.93rem;margin:0 0 26px}
.art .lede{color:var(--navy);font-size:1.22rem;max-width:none}
.prose{padding-bottom:20px}
.prose h2{font-size:1.65rem;line-height:1.22;letter-spacing:-.02em;margin:46px 0 12px}
.prose h3{font-size:1.2rem;margin:28px 0 8px}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{padding-left:1.35em;margin:0 0 18px}
.prose li{margin:7px 0}
.prose li::marker{font-weight:700}
.tbl{overflow-x:auto;margin:18px 0 22px;border-radius:8px;background:#fff}
.prose table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums;min-width:440px}
.prose th,.prose td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{font-weight:700;border-bottom:2px solid var(--navy)}
.prose tr:last-child td{border-bottom:0}
.note{font-size:.95rem;color:var(--muted);border-left:4px solid var(--line);padding:2px 0 2px 16px;margin:18px 0}
.ex{background:#fff;border-radius:8px;padding:16px 20px;margin:18px 0;font-variant-numeric:tabular-nums}
.ex p{margin:0}
.ex p + p{margin-top:6px}
.cta-box{background:#fff;border:2px dashed var(--navy-2);border-radius:8px;padding:24px;margin:46px 0 10px}
.cta-box h2{margin:0 0 8px;font-size:1.4rem}
.cta-box p{margin:0 0 18px;color:var(--muted)}
.related{margin:50px 0 70px}
.related h2{font-size:1.3rem;margin:0 0 12px}
.about-list{padding-left:1.3em}
.nw{white-space:nowrap}

/* Video tool */
.tool{background:#fff;border-radius:12px;padding:22px;margin:8px 0 10px;box-shadow:0 14px 30px -18px rgba(19,37,74,.35)}
.vt-row{display:flex;gap:10px;flex-wrap:wrap}
.vt-row input{flex:1 1 280px;min-width:0;border:2px solid var(--line);border-radius:12px;padding:13px 14px;font:500 1rem/1.3 var(--font);color:var(--navy);background:#fff}
.vt-row input:focus{outline:none;border-color:var(--navy-2)}
.vt-row .btn{flex:none}
.vt-status{min-height:1.5em;margin:12px 0 0;font-size:.95rem;font-weight:500}
.vt-status.is-err{color:#B42318}
.vt-status.is-warn{color:#8A5A00}
.vt-status.is-ok{color:var(--mint)}
.vt-result{display:grid;grid-template-columns:minmax(0,220px) minmax(0,1fr);gap:22px;margin-top:18px;padding-top:18px;border-top:2px dashed var(--line)}
.vt-result[hidden]{display:none}
.vt-result video{width:100%;aspect-ratio:9/16;object-fit:cover;background:var(--navy);border-radius:10px}
.vt-author{font-weight:800;font-size:1.15rem;margin:0}
.vt-meta{color:var(--muted);margin:2px 0 10px;font-size:.95rem}
.vt-cap{margin:0 0 16px;font-size:.95rem;line-height:1.5;overflow-wrap:anywhere}
.vt-actions{display:flex;flex-wrap:wrap;gap:10px}
.vt-note{font-size:.88rem;color:var(--muted);margin:14px 0 0}
.btn[disabled]{opacity:.6;cursor:progress}
@media (max-width:600px){.vt-result{grid-template-columns:1fr}.vt-result video{max-width:260px}}
.vt-opts{display:flex;flex-wrap:wrap;gap:8px 18px;margin:14px 0 0;padding:0;border:0}
.vt-opts legend{font-weight:700;font-size:.95rem;margin-bottom:6px;padding:0}
.vt-opts label{display:inline-flex;align-items:center;gap:8px;font-weight:500;cursor:pointer}
.vt-opts input{accent-color:var(--navy);width:18px;height:18px}
.vt-res{display:inline-block;margin:0 0 10px;padding:2px 10px;border-radius:999px;background:var(--paper);font-size:.85rem;font-weight:700;font-variant-numeric:tabular-nums}
.vt-res:empty{display:none}

/* Quảng cáo đếm ngược trước khi lưu video */
.vt-ad{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:16px;background:rgba(10,24,52,.62)}
.vt-ad[hidden]{display:none}
body.ad-open{overflow:hidden}
.ad-box{position:relative;width:100%;max-width:440px;background:var(--navy);color:#fff;border-radius:16px;padding:26px 24px 22px;box-shadow:0 30px 60px -20px rgba(0,0,0,.5);outline:none}
.ad-tag{display:inline-block;font-size:.78rem;font-weight:600;color:#C9D3E8;border:1px solid #4A5F8A;border-radius:6px;padding:1px 8px;margin-bottom:14px}
.ad-close{position:absolute;top:12px;right:12px;width:36px;height:36px;border-radius:50%;border:0;background:rgba(255,255,255,.12);color:#fff;font-size:1.3rem;line-height:1;cursor:pointer}
.ad-brand{display:flex;align-items:center;gap:12px;margin:0 0 10px}
.ad-coin{width:44px;height:44px;border-radius:50%;background:var(--gold);color:var(--navy);display:grid;place-items:center;font-weight:800;font-size:1.05rem;flex:none}
.ad-name{font-weight:800;font-size:1.35rem;letter-spacing:-.02em;line-height:1.15}
.ad-slogan{color:var(--gold);font-weight:700;font-size:.95rem}
.ad-text{margin:0 0 16px;color:#DCE3F2;line-height:1.55}
.ad-cta{display:block;text-align:center;background:var(--gold);color:var(--navy);border-radius:12px;padding:13px 16px;font-weight:800;text-decoration:none;margin-bottom:14px}
.ad-cta:hover{background:var(--gold-2)}
.ad-foot{display:flex;align-items:center;gap:14px;border-top:1px solid #33497A;padding-top:14px}
.ad-ring{--p:0;width:48px;height:48px;border-radius:50%;flex:none;display:grid;place-items:center;background:conic-gradient(var(--gold) calc(var(--p)*360deg),#33497A 0);transition:background .9s linear}
.ad-ring span{width:38px;height:38px;border-radius:50%;background:var(--navy);display:grid;place-items:center;font-weight:800;font-variant-numeric:tabular-nums}
.ad-go{flex:1;min-width:0;border:2px solid #fff;background:transparent;color:#fff;border-radius:12px;padding:11px 12px;font:700 .98rem/1.2 var(--font);cursor:pointer}
.ad-go:not([disabled]){background:#fff;color:var(--navy)}
.ad-go[disabled]{opacity:.75;cursor:wait}
.ad-wait{margin:8px 0 0;font-size:.85rem;color:#A9B7D4;min-height:1.2em}
@media (prefers-reduced-motion:reduce){.ad-ring{transition:none}}

/* Chọn ngôn ngữ */
.lang{position:relative}
.lang select{font:600 .9rem var(--font);color:var(--navy);background:#fff;border:2px solid var(--line);border-radius:10px;padding:7px 10px;cursor:pointer}
/* Hub hướng dẫn */
.hub-groups{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:28px 40px;margin-top:10px}
.hub-groups h2{font-size:1.35rem;margin:0 0 6px}
.hub-groups p{margin:0 0 10px;color:var(--muted)}
.hub-groups ul{margin:0;padding-left:1.1em}
.hub-groups li{margin:4px 0}

html[lang^="th"] body,html[lang^="zh"] body{font-family:system-ui,-apple-system,"Segoe UI","Noto Sans Thai","Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif}