@font-face{font-family:'BVP Fallback';font-weight:400;src:local('Arial'),local('Helvetica'),local('Roboto');size-adjust:109%}
@font-face{font-family:'BVP Fallback';font-weight:500 700;src:local('Arial'),local('Helvetica'),local('Roboto');size-adjust:104%}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/bvp-400-vietnamese.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:'Be Vietnam Pro';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/bvp-400-latin-ext.woff2) format('woff2');unicode-range:U+0100-0101,U+0104-010F,U+0112-0127,U+012A-0130,U+0132-0151,U+0154-0167,U+016A-019F,U+01A2-01AE,U+01B1-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1D00-1DBF,U+1E00-1E9F,U+1EFA-1EFF,U+20A0-20AA,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/bvp-400-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}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/bvp-500-vietnamese.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:'Be Vietnam Pro';font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/bvp-500-latin-ext.woff2) format('woff2');unicode-range:U+0100-0101,U+0104-010F,U+0112-0127,U+012A-0130,U+0132-0151,U+0154-0167,U+016A-019F,U+01A2-01AE,U+01B1-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1D00-1DBF,U+1E00-1E9F,U+1EFA-1EFF,U+20A0-20AA,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/bvp-500-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}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/bvp-600-vietnamese.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:'Be Vietnam Pro';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/bvp-600-latin-ext.woff2) format('woff2');unicode-range:U+0100-0101,U+0104-010F,U+0112-0127,U+012A-0130,U+0132-0151,U+0154-0167,U+016A-019F,U+01A2-01AE,U+01B1-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1D00-1DBF,U+1E00-1E9F,U+1EFA-1EFF,U+20A0-20AA,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Be Vietnam Pro';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/bvp-600-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}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/plex-500-vietnamese.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:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/plex-500-latin-ext.woff2) format('woff2');unicode-range:U+0100-0101,U+0104-010F,U+0112-0127,U+012A-0130,U+0132-0151,U+0154-0167,U+016A-019F,U+01A2-01AE,U+01B1-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1D00-1DBF,U+1E00-1E9F,U+1EFA-1EFF,U+20A0-20AA,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/plex-500-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{color-scheme:light;--bg:#fbfaf7;--raised:#ffffff;--deep:#f4f1ea;--ink:#211d18;--muted:#675f54;--line:#e8e3d9;--tea:#b54b06;--tea-soft:#fdf0e3;--amber2:#b54b06;--ready:#2c7443;--ready-soft:#e9f4ec;--warn:#8a5f00;--warn-soft:#faf2dc;--red:#b4432a;--red-soft:#fbece7}
:root{--display:"Be Vietnam Pro","BVP Fallback",system-ui,sans-serif;--body:"Be Vietnam Pro","BVP Fallback",system-ui,sans-serif;--mono:"IBM Plex Mono",ui-monospace,Menlo,monospace}
*{box-sizing:border-box}[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16.5px/1.6 var(--body)}
a{color:var(--tea);text-underline-offset:3px}a:hover{color:var(--ink)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--tea);outline-offset:3px}
h1,h2,h3{font-family:var(--display);font-weight:700;margin:0;text-wrap:balance}p{margin:0}
h1{font-size:clamp(32px,4.2vw,50px);line-height:1.15;letter-spacing:-.025em;font-weight:600}h2{font-size:clamp(24px,2.6vw,32px);line-height:1.25;letter-spacing:-.015em;font-weight:600}h3{font-size:17px;line-height:1.35;font-weight:600}
.wrap{max-width:1180px;margin-inline:auto;padding-inline:18px}
.fn-list{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px}.fn-list li{font-size:15px;line-height:1.3;background:#fff;border:1px solid var(--line);border-radius:6px;padding:6px 10px}
.more summary{cursor:pointer;font-weight:600;color:var(--tea)}
.bar{position:sticky;top:0;z-index:20;background:#fffffff2;border-bottom:1px solid var(--line)}
.bar .wrap{display:flex;align-items:center;gap:18px;padding-block:12px}.logo{font:600 19px var(--display);color:var(--ink);text-decoration:none}.logo b{color:var(--tea)}
.bar nav{margin-left:auto;display:flex;gap:16px;align-items:center;font-size:15px}.bar nav a{color:var(--muted);text-decoration:none}.bar nav a:hover{color:var(--tea)}
.btn{display:inline-block;border:1px solid var(--tea);border-radius:10px;background:var(--tea);color:#fff;font:600 15.5px var(--body);padding:12px 22px;text-decoration:none;text-align:center;cursor:pointer;transition:background-color .15s}
.btn:hover{background:#9c4206;border-color:#9c4206;color:#fff}.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}.btn.ghost:hover{background:var(--deep);color:var(--ink)}
.tag{font:600 14px var(--body);color:var(--tea)}.muted{color:var(--muted)}.small{font-size:14px}
.foot{border-top:1px solid var(--line);padding-block:26px;color:var(--muted);font-size:14px;margin-top:50px}
/* thư viện */
.lib-hero{padding-block:44px 26px;display:grid;gap:16px}.lib-hero p{max-width:62ch;color:var(--muted)}
.search{display:flex;gap:10px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px 6px 6px 16px;max-width:640px}
.search input{flex:1;min-width:0;background:none;border:0;color:var(--ink);font:400 17px var(--body);outline:0}
.starts{display:flex;flex-wrap:wrap;gap:8px;padding-bottom:24px}.starts a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;font-size:15px;color:var(--ink);text-decoration:none}.starts a:hover{border-color:var(--tea);color:var(--tea)}
.search2{max-width:none;margin:0 0 22px;scroll-margin-top:84px}
body.dang-tim .starts,body.dang-tim #hot,body.tim-tren #f2{display:none}
.lib{display:grid;grid-template-columns:230px minmax(0,1fr);gap:24px;align-items:start}
.side{position:sticky;top:76px;background:var(--raised);border:1px solid var(--line);border-radius:16px;padding:18px;display:grid;gap:12px}
.side label{display:grid;gap:4px;font-size:14px;color:var(--muted)}
.side select{background:var(--deep);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:9px;font:400 15px var(--body);width:100%}
.count{font:600 22px var(--display)}
.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:12px;scrollbar-width:thin}
.chip{flex:none;border:1px solid var(--line);background:none;color:var(--muted);border-radius:999px;padding:6px 14px;font:400 14px var(--body);cursor:pointer}.chip[aria-pressed=true]{background:var(--tea);border-color:var(--tea);color:#fff;font-weight:600}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.card{all:unset;box-sizing:border-box;cursor:pointer;display:flex;flex-direction:column;gap:9px;background:var(--raised);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .15s}
.card:hover{border-color:var(--tea)}.card:focus-visible{outline:2px solid var(--tea);outline-offset:2px}
.paper{padding:16px 16px 0;display:grid;gap:5px;align-content:start}
.paper small{font:600 13px var(--body);color:var(--tea)}.paper strong{font:600 17px/1.3 var(--display)}
.card-b{padding:0 16px 14px;display:flex;flex-direction:column;gap:7px;flex:1;font-size:14.5px}.card-b .muted{font-size:13px}
.lic{display:inline-block;font:500 12px var(--body);color:var(--ready);background:var(--ready-soft);padding:1px 7px;border-radius:5px;width:fit-content}.free{font-weight:600;color:var(--ready);margin-top:auto}
.more{display:block;margin:22px auto 0}
.hot{padding-bottom:30px}.hot-h{display:flex;justify-content:space-between;align-items:end;gap:16px;flex-wrap:wrap;margin-bottom:14px}.hot-h p{color:var(--muted);font-size:14.5px;max-width:60ch}
.hot-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.hc{all:unset;box-sizing:border-box;cursor:pointer;position:relative;display:flex;flex-direction:column;background:var(--raised);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .15s,transform .15s}
.hc:hover{border-color:var(--tea);transform:translateY(-2px)}.hc:focus-visible{outline:2px solid var(--tea);outline-offset:2px}
.hc:first-child{grid-column:span 2;grid-row:span 2}.hc:first-child .hc-b strong{font-size:24px}.hc:first-child .hc-b p{font-size:16px}
.hc:first-child .hc-img{flex:1;aspect-ratio:auto;min-height:200px;background:#fff}.hc:first-child .hc-img img{object-fit:contain}.hc:first-child .hc-b{flex:none}
.hc-img{aspect-ratio:2/1;background:var(--deep);border-bottom:1px solid var(--line);overflow:hidden;display:grid;place-items:center}
.hc-img img{width:100%;height:100%;object-fit:cover;display:block}.hc-img span{font:600 15px var(--display);color:var(--muted);padding:10px;text-align:center}
.hc-rank{position:absolute;top:10px;left:10px;background:var(--ink);color:#fff;font:700 15px/1 var(--display);border-radius:8px;padding:6px 9px}
.hc:nth-child(-n+3) .hc-rank{background:var(--tea)}
.hc-new{position:absolute;top:10px;right:10px;background:var(--ready);color:#fff;font:600 12px/1 var(--body);border-radius:6px;padding:5px 8px}
.hc-b{padding:12px 14px 14px;display:flex;flex-direction:column;gap:6px;flex:1;font-size:14px}.hc-b small{font:600 12.5px var(--body);color:var(--tea)}.hc-b strong{font:600 16px/1.3 var(--display)}
.hc-m{margin-top:auto;display:flex;gap:10px;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}.hc-m b{color:var(--ready);font-weight:600}.hc-fb{color:var(--tea);font-weight:600}
.hot-grid:not(.all) .hc:nth-child(n+10){display:none}.hot-more{display:block;margin:16px auto 0}
@media(max-width:900px){.hot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hot-grid:not(.all) .hc:nth-child(n+8){display:none}}
@media(max-width:520px){.hot-grid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:12px;padding-bottom:8px;margin-inline:-18px;padding-inline:18px;scrollbar-width:none}.hot-grid .hc,.hot-grid:not(.all) .hc:nth-child(n){display:flex;flex:0 0 84%;scroll-snap-align:center}.hc:hover{transform:none}.hot-more{display:none!important}.hc:first-child{grid-column:auto;grid-row:auto}.hc:first-child .hc-b strong{font-size:19px}.hc:first-child .hc-img{flex:none;aspect-ratio:2/1;min-height:0}}
.empty{padding:40px;text-align:center;color:var(--muted)}
dialog{background:var(--raised);color:var(--ink);border:1px solid var(--line);border-radius:18px;max-width:640px;width:calc(100% - 32px);padding:24px}dialog::backdrop{background:#2a241c80}
dialog h2{font-size:26px;margin-bottom:8px}dialog dl{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;margin:14px 0;font-size:15px}dialog dt{color:var(--muted)}dialog dd{margin:0;overflow-wrap:anywhere}
.cmd{background:var(--deep);border:1px solid var(--line);border-radius:10px;padding:12px;font:400 14px/1.55 var(--body);white-space:pre-wrap;overflow-wrap:anywhere}
.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.upsell{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;padding-block:6px 30px}
.upsell a{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;color:inherit;text-decoration:none;display:grid;gap:3px}.upsell a:hover{border-color:var(--tea)}
.upsell b{font:600 16px var(--display)}.upsell span{font-size:14px;color:var(--muted)}.upsell i{font:600 15px var(--body);color:var(--tea);font-style:normal}
/* trang bộ */
.p-hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:36px;padding-block:52px 34px;align-items:start}
.p-hero .lead{font-size:clamp(18px,2vw,21px);color:var(--muted);margin-top:16px;max-width:52ch}
.buy{position:sticky;top:80px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;display:grid;gap:12px}
.price{font:600 32px/1.1 var(--display);color:var(--ink)}.buy .btn{width:100%}.gift{border-top:1px solid var(--line);padding-top:12px;font-size:15px;display:grid;gap:8px}.gift b{color:var(--ready)}
.who{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted)}.who img{border-radius:50%;flex:none}.who b{color:var(--ink);font-weight:600}
.got{background:var(--ready-soft);border:1px solid var(--ready);border-radius:12px;padding:12px;display:grid;gap:8px}
video.demo{width:100%;border-radius:16px;border:1px solid var(--line);display:block;margin-top:24px;height:auto;background:#000}
.sec{padding-block:30px;display:grid;gap:16px}.sec p{max-width:66ch}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px}.grid2>div{background:var(--raised);border:1px solid var(--line);border-radius:14px;padding:16px;display:grid;gap:5px;align-content:start}.grid2 p{font-size:15px;color:var(--muted)}
ul.plain{margin:0;padding-left:20px;display:grid;gap:6px;max-width:66ch}
details{background:var(--raised);border:1px solid var(--line);border-radius:12px;padding:12px 16px}summary{cursor:pointer;font-weight:600}details p{margin-top:8px;color:var(--muted)}
.sticky-buy{display:none}
.so-do,.nen{background:var(--raised);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.so-dong,.nen-dong{display:grid;gap:4px 16px;padding:13px 18px;border-top:1px solid var(--line);align-items:center;font-size:15px}.so-dong{grid-template-columns:minmax(0,2.4fr) 1fr 1fr 1fr}.nen-dong{grid-template-columns:110px minmax(0,1.3fr) minmax(0,1.7fr) minmax(0,1.2fr)}
.so-dau{border-top:0;background:var(--deep);font-size:13px;font-weight:600;color:var(--muted)}.so-dong b{display:block;font-size:13px;font-weight:600;color:var(--muted)}.so-dong span:not(:first-child){font-family:var(--mono);font-size:14px}
.so-do i,.nen i{font-style:normal;font-weight:600}i.vua{color:var(--ready)}i.yeu{color:#a3322a}
.tach{grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);align-items:start;gap:28px}.tach>div{display:grid;gap:12px}.anh-mau{width:100%;height:auto;border:1px solid var(--line);border-radius:14px;display:block}
.buy-list li{list-style:none;position:relative;padding-left:20px}.buy-list{padding-left:0}.buy-list li::before{content:"✓";position:absolute;left:0;color:var(--ready);font-weight:700}
.toc{margin:0;padding-left:22px;display:grid;gap:6px;max-width:66ch}
#huong-dan,#guide{min-width:0}#huong-dan{scroll-margin-top:72px}#huong-dan .lesson{display:grid;gap:11px;padding:22px 0 6px;border-top:1px solid var(--line);min-width:0}
.lesson-head{display:flex;gap:10px;justify-content:space-between;align-items:baseline;flex-wrap:wrap}.lesson h4{margin:6px 0 0;font:600 16px var(--display)}.lesson ol,.lesson ul{margin:0;padding-left:22px;display:grid;gap:5px;max-width:68ch}.lesson p{max-width:68ch}
.badge{font:500 12px var(--mono);padding:2px 8px;border-radius:4px;background:var(--tea-soft);color:var(--tea)}.lbl{font-weight:600}.who{font-size:13.5px;color:var(--muted)}
.pass{background:var(--ready-soft);padding:9px 13px;border-radius:6px;max-width:68ch}.pass b{color:var(--ready);font-weight:600}.trap{background:var(--warn-soft);padding:9px 13px;border-radius:6px;max-width:68ch}.trap b{color:var(--warn);font-weight:600}
.code{position:relative;background:var(--deep);border-radius:6px;min-width:0}.code pre{margin:0;padding:13px 15px;padding-right:62px;overflow-x:auto;font:500 13.5px/1.6 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere}.code.cmd pre{white-space:pre;overflow-wrap:normal}.copy{position:absolute;top:7px;right:7px;font:500 12px var(--body);color:var(--muted);background:var(--raised);border:1px solid var(--line);border-radius:4px;padding:3px 8px;cursor:pointer}
code{font:500 .92em var(--mono);background:var(--deep);padding:1px 5px;border-radius:4px}.code code{background:none;padding:0}
/* trang doanh nghiệp */
.biz-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,440px);gap:36px;padding-block:48px 30px;align-items:start}.biz-hero .lead{font-size:clamp(18px,2vw,21px);color:var(--muted);margin-top:16px;max-width:50ch}
.biz-form{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;display:grid;gap:10px}.biz-form label{display:grid;gap:4px;font-size:14.5px;font-weight:600}.biz-form input,.biz-form select,.biz-form textarea{width:100%;background:var(--deep);border:1px solid var(--line);border-radius:10px;padding:11px 12px;font:400 16px var(--body);color:var(--ink)}.biz-form textarea{min-height:112px;resize:vertical}
.biz-form .ok{display:flex;gap:8px;align-items:flex-start;font-weight:400;font-size:14px;color:var(--muted)}.biz-form .ok input{width:auto;margin-top:5px}.biz-msg{font-size:15px}.biz-msg.err{color:#a3322a}.trap-field{position:absolute;left:-9999px;width:1px}
.biz-photos{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:12px}.biz-photos figure{margin:0;display:grid;gap:6px}.biz-photos img{width:100%;height:220px;object-fit:cover;border-radius:12px;display:block}.biz-photos figcaption{font-size:13.5px;color:var(--muted)}
.biz-steps{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;counter-reset:b}.biz-steps li{counter-increment:b;background:var(--raised);border:1px solid var(--line);border-radius:14px;padding:16px;display:grid;gap:5px;align-content:start}.biz-steps li::before{content:counter(b);font:600 22px var(--display);color:var(--tea)}.biz-steps p{font-size:15px;color:var(--muted)}
.offer b{font:600 18px var(--display)}.offer i{font-style:normal;font-weight:600;color:var(--tea)}
@media(max-width:860px){.biz-hero{grid-template-columns:1fr;padding-top:30px}.biz-photos{grid-template-columns:1fr}.biz-photos img{height:auto;aspect-ratio:3/2}}
@media(max-width:720px){.so-dau{display:none}.so-dong,.nen-dong{grid-template-columns:1fr}.so-dong>:first-child,.nen-dong>:first-child{margin-bottom:4px}[data-nhan]{display:flex;justify-content:space-between;gap:16px;text-align:right}[data-nhan]::before{content:attr(data-nhan);color:var(--muted);font:400 13px var(--body);text-align:left;flex:none;max-width:45%}.nen-dong [data-nhan]{display:block;text-align:left}.nen-dong [data-nhan]::before{display:block;max-width:none;margin-top:4px}.tach{grid-template-columns:1fr}}
@media(max-width:860px){.lib{grid-template-columns:minmax(0,1fr)}.side{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}.search .btn{padding-inline:18px}.side .count{grid-column:1/-1}.p-hero{grid-template-columns:1fr;padding-top:32px}.buy{position:static}.bar nav a:not(.keep){display:none}}

:root{--bg:#faf9f5;--ink:#141413;--muted:#5e5d59;--tea:#c6613f;--line:#e8e6dc;--deep:#f0eee6;--raised:#fff;--grad:linear-gradient(135deg,#e5926b 0%,#d97757 45%,#c6613f 100%);--grad-soft:linear-gradient(135deg,#fdf1ea 0%,#fbe6da 100%);--glow:0 10px 30px -12px #d9775780}
body{background:radial-gradient(1100px 600px at 100% -10%,#f6dccd66,transparent 60%),var(--bg)}
a{color:var(--tea)}a:hover{color:#a84e30}
.bar{background:#faf9f5e6;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);z-index:40}
.bar .wrap{min-height:64px;padding-block:10px;gap:14px}
.logo{font:800 25px/1.2 ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;letter-spacing:-.06em;display:inline-flex;align-items:baseline;gap:6px;white-space:nowrap;color:var(--ink);text-decoration:none}
.logo em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;padding-right:.04em}
.logo-dot{width:7px;height:7px;border-radius:50%;background:#c8963b;align-self:flex-start;margin-top:6px;flex:none}.logo:hover{color:var(--ink)}
.bar nav{gap:22px;font-size:14px;margin-right:6px}.bar nav a.keep{color:var(--ink);font-weight:600}
.btn{background:var(--grad);border:0;color:#fff;border-radius:10px;box-shadow:var(--glow);transition:transform .15s,box-shadow .15s,filter .15s}
.btn:hover{background:var(--grad);color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 14px 34px -12px #d97757a0}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid #e3d9cf;box-shadow:none}.btn.ghost:hover{background:var(--grad-soft);border-color:#ecc3ad;color:var(--ink);filter:none}
.btn.small{padding:7px 16px;font-size:14px}
.tag,.hot-h p.tag{font:500 13px/1.5 "IBM Plex Mono",ui-monospace,monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--tea)}
@media(max-width:900px){.bar nav a:not(.keep){display:none}.bar nav{margin-left:auto}}
@media(max-width:560px){.bar .wrap{gap:8px;padding-inline:12px;min-height:58px}.logo{font-size:20px}.bar-learn{display:none}.bar nav a.keep{font-size:13.5px}}
.zalo-fab{position:fixed;right:16px;bottom:20px;z-index:30;display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:999px;border:2px solid #fff;background:#0068ff;color:#fff;font:600 15px/1.2 var(--body,system-ui,sans-serif);text-decoration:none}.hen-fab{position:fixed;right:16px;bottom:74px;z-index:30;display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:999px;border:2px solid #fff;background:var(--tea);color:#fff;font:600 15px/1.2 var(--body,system-ui,sans-serif);text-decoration:none;box-shadow:0 4px 14px rgba(0,0,0,.18)}.hen-fab:hover{filter:brightness(.93);color:#fff}.hen-fab:focus-visible{outline:3px solid var(--tea);outline-offset:2px}.hen-fab svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2}.bar .wrap:has(#tk-btn.in-top)>.logo{margin-right:auto}.zalo-fab:hover{background:#0054cc;color:#fff}.zalo-fab:focus-visible{outline:3px solid #0068ff;outline-offset:2px}.zalo-fab svg{width:20px;height:20px;fill:currentColor}@media print{.zalo-fab{display:none}}