:root{--bg:#FFFFFF;--soft:#F3F8F6;--mint:#E3F2EC;--ink:#10202B;--muted:#5A6B74;--line:#DCE6E2;--green:#0F6E56;--green-dark:#0B5542;--amber:#F2A33A;--amber-dark:#DB8E22;--amber-soft:#FFF4E0;--red:#C9372C;--red-soft:#FDECEA;--display:"Lexend", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--body:"Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--r:16px;--r-lg:24px;--shadow:0 12px 34px -14px rgba(16,32,43,.22)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.7;-webkit-text-size-adjust:100%}img{max-width:100%;height:auto;display:block}a{color:var(--green)}h1,h2,h3,h4{font-family:var(--display);line-height:1.22;margin:0;font-weight:600;letter-spacing:-.01em;text-wrap:balance;color:var(--ink)}p{margin:0}.wrap{max-width:1140px;margin-inline:auto;padding-inline:20px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:8px;background:#fff;padding:8px 12px;z-index:99}:focus-visible{outline:3px solid var(--amber);outline-offset:3px;border-radius:6px}.eyebrow{font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--green)}.hl{color:var(--green)}.btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;padding:14px 24px;border-radius:10px;border:2px solid var(--green);background:var(--green);color:#fff;font:inherit;font-size:16px;font-weight:600;text-decoration:none;cursor:pointer;line-height:1.3;transition:background .15s,border-color .15s,color .15s}.btn:hover{background:var(--green-dark);border-color:var(--green-dark)}.btn:disabled{opacity:.6;cursor:wait}.btn-ghost{background:#fff;color:var(--green)}.btn-ghost:hover{background:var(--mint);color:var(--green-dark)}.btn-amber{background:var(--amber);border-color:var(--amber);color:var(--ink)}.btn-amber:hover{background:var(--amber-dark);border-color:var(--amber-dark)}.btn-sm{padding:9px 16px;font-size:14px;border-radius:8px}.pill{display:inline-block;font-size:12px;font-weight:600;color:var(--green);background:var(--mint);padding:3px 10px;border-radius:999px;text-decoration:none;line-height:1.6}.pill-gift{background:var(--amber-soft);color:#8a5a00}.badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px 6px 6px;font-size:13px;font-weight:500;line-height:1.3}.badge i{width:22px;height:22px;border-radius:50%;background:var(--amber);display:grid;place-items:center;font-style:normal;font-size:12px;font-weight:700;color:var(--ink);flex:none}.top{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.4)blur(8px);border-bottom:1px solid var(--line)}.top-in{display:flex;align-items:center;gap:24px;padding-block:12px}.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:none}.logo-mark{width:40px;height:40px;border-radius:12px;background:var(--green);color:#fff;display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:20px;flex:none}.logo b{font-family:var(--display);font-weight:600;font-size:17px;display:block;line-height:1.15;white-space:nowrap}.logo small{font-size:12px;color:var(--muted);white-space:nowrap}.menu{display:flex;gap:20px;margin-left:auto;font-size:14px;font-weight:500}.menu a{color:var(--muted);text-decoration:none;white-space:nowrap;padding-block:4px;border-bottom:2px solid transparent}.menu a:hover{color:var(--green)}.menu a[aria-current]{color:var(--green);border-color:var(--green)}.top-cta{flex:none;white-space:nowrap}@media(max-width:1080px){.top-in{flex-wrap:wrap;row-gap:0;padding-bottom:0}.top-cta{margin-left:auto}.menu{order:3;width:calc(100% + 40px);margin:8px -20px 0;padding:8px 20px 10px;border-top:1px solid var(--line);overflow-x:auto;scrollbar-width:none;gap:22px}.menu::-webkit-scrollbar{display:none}}@media(max-width:420px){.logo small{display:none}.logo b{font-size:16px}.top-cta{padding:8px 12px;font-size:13px}}.block{padding-block:64px}.block-soft{background:var(--soft)}.block-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:28px}.block-head h2{font-size:clamp(26px,3.6vw,34px);margin-top:4px}.block-head p{color:var(--muted);margin-top:8px;max-width:56ch}.block-head a{font-weight:600;text-decoration:none;white-space:nowrap;font-size:15px}.block-head-c{flex-direction:column;align-items:center;text-align:center}.block-head-c p{margin-inline:auto}.crumbs{font-size:14px;color:var(--muted)}.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--green)}.hero{background:linear-gradient(180deg,var(--soft),#fff 85%)}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;padding-block:56px 64px}.hero h1{font-size:clamp(34px,5vw,54px);font-weight:700;margin-top:18px;letter-spacing:-.02em}.lead{font-size:18px;color:var(--muted);margin-top:18px;max-width:46ch}.checks{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:8px;font-size:16px}.checks li{display:flex;gap:10px;align-items:flex-start}.checks li::before{content:"✓";flex:none;display:grid;place-items:center;width:22px;height:22px;margin-top:3px;border-radius:50%;background:var(--mint);color:var(--green);font-weight:700;font-size:13px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.hero-visual{position:relative;justify-self:end;width:min(100%,430px)}.hero-img{border-radius:22px;aspect-ratio:4/5;object-fit:cover;object-position:top;width:100%}.float{position:absolute;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 16px;box-shadow:var(--shadow);font-size:13px;line-height:1.4;color:var(--muted)}.float b{display:block;font-family:var(--display);font-size:21px;color:var(--green);line-height:1.25}.float-1{left:-28px;top:36px}.float-2{right:-20px;bottom:84px}.float-3{left:20px;bottom:-18px;background:var(--ink);border-color:var(--ink);color:#c8d3d9}.float-3 b{color:var(--amber)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding-block:8px 8px}.stat{background:var(--soft);border-radius:var(--r);padding:20px 22px}.stat b{font-family:var(--display);font-weight:600;font-size:clamp(24px,3vw,30px);color:var(--green);display:block;line-height:1.25}.stat span{font-size:14px;color:var(--muted);line-height:1.45;display:block;margin-top:4px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:buoc}.step{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:border-color .15s,box-shadow .15s}.step:hover{border-color:var(--green);box-shadow:var(--shadow)}.step::before{counter-increment:buoc;content:counter(buoc);width:42px;height:42px;border-radius:12px;background:var(--mint);color:var(--green);display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:18px;margin-bottom:16px}.step h3{font-size:19px;margin-bottom:8px}.step p{font-size:15px;color:var(--muted);flex:1}.step span{margin-top:14px;font-weight:600;color:var(--green);font-size:15px}.product{background:var(--ink);color:#fff;border-radius:var(--r-lg);padding:52px;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}.product .eyebrow{color:var(--amber)}.product h2{color:#fff;font-size:clamp(28px,3.6vw,38px);margin:8px 0 12px}.product p{color:#b9c6cd}.product ul{list-style:none;padding:0;margin:22px 0 26px;display:grid;gap:10px;font-size:16px}.product li{display:flex;gap:10px}.product li::before{content:"✓";color:var(--amber);font-weight:700}.price{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 12px;margin-bottom:20px}.price b{font-family:var(--display);font-size:40px;font-weight:700;line-height:1}.price span{font-size:14px;color:#b9c6cd}.product .alt{display:inline-block;margin-top:16px;color:#c8d3d9;font-size:15px}.product .alt a{color:#fff}.pcard{background:#fff;color:var(--ink);border-radius:var(--r);overflow:hidden;box-shadow:0 30px 60px -30px rgba(0,0,0,.6)}.pcard img{width:100%;max-height:460px;object-fit:cover;object-position:top}.pcard div{padding:14px 18px;font-size:14px;color:var(--muted);line-height:1.5}.pcard div b{display:block;font-family:var(--display);color:var(--ink);font-size:15px;font-weight:600}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s,border-color .15s}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c9dad3}.card-link{display:flex;flex-direction:column;color:inherit;text-decoration:none;height:100%}.card img{aspect-ratio:16/10;object-fit:cover;width:100%;background:var(--soft)}.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}.card h3{font-size:18px;margin:12px 0 8px;line-height:1.35}.card p{color:var(--muted);font-size:15px;line-height:1.6;flex:1}.card-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-top:16px}.card-meta img{width:24px;height:24px;border-radius:50%;object-fit:cover;aspect-ratio:1}.card-gift{border-color:#f3d7a6}.card-gift:hover{border-color:var(--amber)}.results{display:grid;grid-template-columns:1.25fr 1fr;gap:28px;align-items:start}.tbl{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff}.tbl table{width:100%;border-collapse:collapse;font-size:15px}.tbl th{background:var(--soft);text-align:left;padding:12px 16px;font-weight:600;font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.tbl td{padding:13px 16px;border-top:1px solid var(--line);vertical-align:top}.tbl td b{color:var(--green);font-family:var(--display);font-weight:600;white-space:nowrap}.quote{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px}.quote p{font-size:17px;line-height:1.65}.quote p::before{content:"“";display:block;font-family:var(--display);font-size:52px;line-height:.6;color:var(--amber);margin-bottom:10px}.quote span{display:block;font-size:14px;color:var(--muted);margin-top:12px}.disc{font-size:14px;color:var(--muted);background:var(--amber-soft);border-left:3px solid var(--amber);padding:12px 16px;border-radius:0 10px 10px 0;margin-top:16px;line-height:1.55}.faq{max-width:780px;margin:0 auto}.faq details{border-bottom:1px solid var(--line);padding:18px 0}.faq summary{font-family:var(--display);font-weight:600;font-size:17px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}.faq summary::-webkit-details-marker{display:none}.faq summary::after{content:"+";color:var(--green);font-size:22px;line-height:1;flex:none}.faq details[open] summary::after{content:"–"}.faq details p{font-size:16px;color:var(--muted);margin-top:10px}.chips{display:flex;flex-wrap:wrap;gap:10px}.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px;text-decoration:none;color:var(--ink);font-weight:500;font-size:15px}.chip:hover,.chip[aria-current]{border-color:var(--green);color:var(--green);background:var(--mint)}.band{background:linear-gradient(180deg,var(--soft),#fff);border-bottom:1px solid var(--line)}.band .wrap{padding-block:36px 40px}.band h1{font-size:clamp(30px,4.6vw,44px);margin:12px 0 0}.band .intro{font-size:18px;color:var(--muted);margin-top:12px;max-width:62ch}.band .intro p+p{margin-top:.6em}.band .count{display:inline-block;margin-top:16px;font-size:14px;font-weight:600;color:var(--green)}.band .chips{margin-top:22px}.empty{color:var(--muted)}.list-top{padding-top:24px}.list-body{padding-top:20px}.post-head{max-width:820px;padding-top:28px}.post-head-c{max-width:760px;margin-inline:auto}.post-head .pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.post-head h1{font-size:clamp(30px,4.4vw,44px);margin:14px 0 0;letter-spacing:-.02em}.post-head .desc{font-size:19px;color:var(--muted);margin-top:14px;line-height:1.6}.byline{display:flex;gap:12px;align-items:center;font-size:14px;color:var(--muted);line-height:1.5;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}.byline img{width:44px;height:44px;border-radius:50%;object-fit:cover;flex:none}.byline a{color:var(--ink);font-weight:600;text-decoration:none}.byline .cert{display:inline-flex;align-items:center;gap:4px;color:var(--green);font-weight:500}.post-cover{border-radius:var(--r-lg);margin:28px 0 0;width:100%;max-height:560px;object-fit:cover}.post-grid{display:grid;grid-template-columns:minmax(0,1fr)300px;gap:56px;align-items:start;margin-top:12px}.post-grid-1{grid-template-columns:minmax(0,760px);justify-content:center}.post-main{min-width:0}.post-side{position:sticky;top:96px;display:grid;gap:20px;margin-top:28px}.toc-box{background:var(--soft);border-radius:var(--r);padding:18px 20px;font-size:14px}.toc-box h2,.toc-box summary{font-family:var(--display);font-size:15px;font-weight:600;margin-bottom:8px}.toc-box summary{cursor:pointer;margin:0}.toc-box ul{list-style:none;padding:0;margin:0}.toc-box ul ul{padding-left:14px}.toc-box li{margin:6px 0;line-height:1.45}.toc-box a{color:var(--muted);text-decoration:none}.toc-box a:hover{color:var(--green)}.toc-m{display:none;margin-top:24px}.side-buy{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff}.side-buy img{width:100%;aspect-ratio:3/2;object-fit:cover}.side-buy div{padding:16px 18px 18px;font-size:14px;color:var(--muted);line-height:1.55}.side-buy b{display:block;font-family:var(--display);font-size:17px;color:var(--ink);font-weight:600;margin-bottom:4px}.side-buy .btn{width:100%;margin-top:14px}.prose{font-size:18px;margin-top:28px}.prose>*+*{margin-top:1.1em}.prose h2{font-size:clamp(24px,3.4vw,29px);margin-top:1.9em;scroll-margin-top:96px}.prose h3{font-size:21px;margin-top:1.5em;scroll-margin-top:96px}.prose ul,.prose ol{padding-left:1.3em}.prose li+li{margin-top:.4em}.prose li::marker{color:var(--green)}.prose strong{color:var(--ink)}.prose blockquote{margin-inline:0;border-left:4px solid var(--green);background:var(--soft);padding:14px 20px;border-radius:0 12px 12px 0;font-size:18px;color:var(--ink)}.prose table{width:100%;border-collapse:separate;border-spacing:0;font-size:16px;border:1px solid var(--line);border-radius:12px;overflow:hidden}.prose th,.prose td{border-bottom:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}.prose tr:last-child td{border-bottom:0}.prose th{background:var(--soft);font-weight:600}.prose img{border-radius:14px}.prose hr{border:0;border-top:1px solid var(--line);margin-block:2em}.post-fig{margin-inline:0}.post-fig img{border-radius:14px;width:100%}.post-fig figcaption{font-size:14px;color:var(--muted);margin-top:8px;text-align:center}.note-box{background:var(--amber-soft);border-left:4px solid var(--amber);border-radius:0 12px 12px 0;padding:14px 18px;font-size:16px;line-height:1.6}.note-canh-bao{background:var(--red-soft);border-color:var(--red)}.note-box>*+*{margin-top:.6em}.author-box{display:flex;gap:18px;align-items:flex-start;background:var(--soft);border-radius:var(--r);padding:22px;margin-top:44px}.author-box img{width:84px;height:84px;border-radius:50%;object-fit:cover;flex:none}.author-box b{font-family:var(--display);font-size:18px;font-weight:600;display:block}.author-box .cert{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--green);margin:4px 0 8px}.author-box p{font-size:15px;color:var(--muted);line-height:1.6}.author-box a{font-weight:600}.related{border-top:1px solid var(--line);margin-top:56px}.yt{margin-inline:0}.yt-lite,.yt iframe{display:block;width:100%;aspect-ratio:16/9;border:0;border-radius:14px;background:#000 50%/cover no-repeat;position:relative;overflow:hidden}.yt-play{position:absolute;inset:0;margin:auto;width:64px;height:46px;border-radius:14px;background:rgba(16,32,43,.82);color:#fff;display:grid;place-items:center;font-size:20px;transition:background .15s}.yt-lite:hover .yt-play{background:var(--red)}.yt figcaption{font-size:14px;color:var(--muted);margin-top:8px}.vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:22px}.vgrid+.vgrid{margin-top:26px}.vgrid-short{grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:16px}.vcard{margin:0}.vcard .yt-lite,.vcard iframe{display:block;width:100%;aspect-ratio:16/9;border:0;border-radius:14px;background:#000 50%/cover no-repeat;position:relative}.vcard-short .yt-lite,.vcard-short iframe{aspect-ratio:9/16}.vcard figcaption{font-size:15px;font-weight:500;line-height:1.4;margin-top:10px}.vcard small{display:block;font-weight:400;font-size:13px;color:var(--muted);margin-top:3px}.vnav{position:sticky;top:69px;z-index:5;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);padding-block:12px}.vnav .chips{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}.vnav .chips::-webkit-scrollbar{display:none}.vnav .chip{white-space:nowrap}section[id]{scroll-margin-top:150px}.yt-sub{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;background:var(--soft);border-radius:var(--r);padding:22px 26px}.yt-sub b{font-family:var(--display);font-size:20px;font-weight:600;display:block}.yt-sub span{color:var(--muted);font-size:15px}.hv-luoi{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px;margin-top:1.5em}.hv-the{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px}.hv-dau{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px}.hv-ten{font-family:var(--display);font-weight:600;font-size:18px}.hv-so{background:var(--green);color:#fff;font-family:var(--display);font-weight:600;border-radius:999px;padding:2px 12px;font-size:15px}.hv-tg{color:var(--muted);font-size:14px}.hv-loi{font-size:15px;color:var(--ink);margin-top:10px;line-height:1.6}.hv-anh{display:flex;gap:10px;margin-top:12px}.hv-anh a{flex:1}.hv-anh img{border-radius:10px;border:1px solid var(--line);width:100%}.gift-box{background:#fff;border:2px solid var(--green);border-radius:var(--r-lg);padding:28px;margin-block:2em;box-shadow:var(--shadow);font-size:16px}.gift-box h2{font-size:clamp(23px,3.4vw,28px);margin:6px 0}.gift-box .sub{color:var(--muted);margin-bottom:10px}.gift-box label{display:block;font-weight:600;font-size:15px;margin:14px 0 6px}.gift-box input[type=text],.gift-box input[type=tel],.gift-box input[type=email]{width:100%;padding:13px 15px;border:1.5px solid var(--line);border-radius:10px;font:inherit;background:var(--soft);color:var(--ink)}.gift-box input:focus{border-color:var(--green);background:#fff;outline:none;box-shadow:0 0 0 3px var(--mint)}.gift-box .consent{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted);font-weight:400;margin:16px 0}.gift-box .consent input{margin-top:4px;width:20px;height:20px;flex:none;accent-color:var(--green)}.gift-box .btn{width:100%}.gift-box .err{color:var(--red);font-size:14px;margin-top:10px;min-height:1em}.gift-ok .big{font-family:var(--display);font-size:28px;color:var(--green)}.gift-ok>*+*{margin-top:10px}.hp{position:absolute;left:-9999px}.foot{background:var(--soft);border-top:1px solid var(--line);margin-top:64px;padding-block:52px 24px;font-size:15px;color:var(--muted)}.foot-in{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}.foot .logo{margin-bottom:14px;color:var(--ink)}.foot .logo:hover{color:var(--ink)}.foot h4{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink);margin-bottom:12px}.foot ul{list-style:none;padding:0;margin:0}.foot li{margin-bottom:8px}.foot a{color:var(--muted);text-decoration:none}.foot a:hover{color:var(--green)}.foot-note{font-size:13px;line-height:1.6;margin-top:12px}.copy{border-top:1px solid var(--line);margin-top:36px;padding-top:18px;font-size:13px}@media(max-width:960px){.post-grid{grid-template-columns:minmax(0,1fr)}.post-side{display:none}.toc-m{display:block}.grid{grid-template-columns:repeat(2,1fr)}.product{grid-template-columns:1fr;padding:36px}.foot-in{grid-template-columns:1fr 1fr}}@media(max-width:760px){body{font-size:16px}.block{padding-block:44px}.hero-grid{grid-template-columns:1fr;gap:32px;padding-block:32px 48px}.hero-visual{justify-self:center;width:min(100%,360px)}.float-1{left:-8px;top:20px}.float-2{right:-8px}.float-3{left:12px}.stats{grid-template-columns:1fr 1fr;gap:12px}.stat{padding:16px}.steps,.results{grid-template-columns:1fr}.grid{grid-template-columns:1fr}.product{padding:26px 22px;border-radius:20px}.price b{font-size:34px}.block-head{flex-direction:column;align-items:flex-start}.prose{font-size:17px}.prose table{display:block;overflow-x:auto;font-size:15px}.post-head .desc{font-size:17px}.author-box{flex-direction:column}.foot-in{grid-template-columns:1fr 1fr;gap:28px 20px}.foot-in>div:first-child{grid-column:1/-1}.vgrid-short{grid-template-columns:repeat(2,1fr);gap:12px}.vnav{top:113px}section[id]{scroll-margin-top:190px}}@media(max-width:1080px) and (min-width:761px){.vnav{top:113px}}