:root{
  --font-sans:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,sans-serif;
  --slate-50:#f3f4f5;--slate-500:#999;--slate-600:#777;--slate-900:#222;
  --text:#444;--muted:#777;
  --anchor:#0389ff;--accent-ink:#0389ff;--glow:#0389ff;--tint:#f0f0f0;--tint-2:#e6e6e6;--tint-3:#dcdcdc;--glow-rgb:3,137,255;--glow-rgb-2:3,137,255;--brand-rgb:3,137,255;
  --accent-2:#ff9900;
  --surface:#fff;--surface-2:#f5f5f5;
  --border-soft:#e9e9e9;
  --grad:#0389ff;
  --shadow-1:none;--shadow-lift:0 2px 10px rgba(0,0,0,.08);
}
*,*::before,*::after{box-sizing:border-box;border:0 solid;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;line-height:1.6;font-family:var(--font-sans);font-size:16px;-webkit-tap-highlight-color:transparent;scroll-behavior:smooth}
body{background:var(--slate-50);color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
h1,h2,h3,h4{font-size:inherit;font-weight:inherit;color:var(--slate-900)}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img,svg,picture{display:block;max-width:100%}
img{height:auto}
button,input{font:inherit;color:inherit;background:none;border-radius:0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}

.app-bg{min-height:100vh;display:flex;flex-direction:column;background:var(--slate-50)}
.app-bg>main{flex:1 0 auto;width:100%}
.container-fluid{width:100%;margin-inline:auto;padding-inline:.75rem}
@media(min-width:40rem){.container-fluid{max-width:40rem}}
@media(min-width:48rem){.container-fluid{max-width:48rem}}
@media(min-width:64rem){.container-fluid{max-width:64rem}}
@media(min-width:76rem){.container-fluid{max-width:73.75rem}}

.glass{border:1px solid var(--border-soft);background:#fff}

/* Header */
.site-header{position:sticky;top:0;z-index:50;transition:transform .3s ease;will-change:transform;background:#fff;border-width:0 0 1px;border-color:var(--border-soft)}
.site-header.nav-hidden{transform:translateY(-100%)}
.header-row{padding-block:.6rem}
.header-brand{display:flex;align-items:center;justify-content:space-between;gap:2rem}
.brand-block{display:flex;flex-direction:column;gap:.1rem;min-width:0;flex:1 1 auto}
.site-tagline{font-size:.75rem;color:var(--slate-500);overflow-wrap:break-word}
.logo{display:block;flex:none}
.logo-img{height:2.25rem;width:auto;object-fit:contain}
.logo-text{font-weight:700;font-size:1.5rem;letter-spacing:-.01em;color:var(--slate-900)}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:2.5rem;height:2.5rem;border-radius:.35rem;border:1px solid var(--border-soft);background:#fff;cursor:pointer}
.nav-toggle:hover{background:var(--tint)}
.header-panel{display:none;flex-direction:column;gap:.5rem;padding-top:.5rem}
.header-panel.open{display:flex}
.main-nav{display:flex;flex-direction:column;gap:.25rem}
.main-nav a{display:block;padding:.5rem .75rem;border-radius:.35rem;font-weight:600;font-size:.9rem;color:var(--text);transition:color .2s,background .2s}
.main-nav a:hover{color:var(--anchor);background:var(--tint)}
.header-search{position:relative;width:100%}
.search-form{position:relative;display:flex;align-items:center;height:2.5rem;border:2px solid var(--anchor);border-radius:5px;background:#fff;overflow:hidden}
.search-form input{flex:1 1 auto;min-width:0;height:100%;padding:0 .5rem 0 .75rem;background:transparent}
.search-form input::placeholder{color:#999}
.search-form input:focus{outline:none;box-shadow:none}
.search-form button{position:static;flex:none;width:2.375rem;height:100%;display:inline-flex;align-items:center;justify-content:center;border-radius:0;background:var(--anchor);color:#fff;cursor:pointer}
.search-form button:hover{opacity:.85;background:var(--anchor);color:#fff}
.search-results{position:absolute;top:100%;left:0;right:0;margin-top:.5rem;background:#fff;border:1px solid var(--border-soft);border-radius:.35rem;box-shadow:0 10px 30px -10px rgba(2,6,23,.25);max-height:24rem;overflow-y:auto;opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s;z-index:60}
.search-results.show{opacity:1;visibility:visible}
.search-results a{display:block;padding:.6rem .9rem;font-size:.875rem;font-weight:600;border-bottom:1px solid var(--border-soft)}
.search-results a:last-child{border-bottom:0}
.search-results a:hover,.search-results a:focus{background:var(--tint);color:var(--anchor);outline:none}
@media(min-width:64rem){
  .header-row{display:flex;align-items:center;justify-content:space-between;gap:2rem;min-height:75px;padding-block:0}
  .logo-img{height:2.75rem}
  .nav-toggle{display:none}
  .header-brand{gap:2rem}
  .header-panel{display:flex;flex-direction:row;align-items:center;gap:1rem;padding-top:0;flex:1;justify-content:space-between}
  .main-nav{flex-direction:row;align-items:center;gap:.25rem}
  .header-search{width:12.5rem}
}
@media(min-width:80rem){.header-search{width:14rem}}
@media(max-width:63.9375rem){.logo-text{font-size:1.25rem}}

/* Duong dan dieu huong (breadcrumb) */
.breadcrumb{margin:0 0 1.25rem;padding:.9rem 1rem;background:#fff;border:1px solid var(--border-soft);border-radius:.5rem}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;list-style:none;padding:0;margin:0;font-size:.75rem;color:var(--slate-500)}
.breadcrumb li{display:flex;align-items:center;gap:.4rem;min-width:0}
.breadcrumb li:not(:last-child)::after{content:"/";opacity:.6}
.breadcrumb a{color:var(--slate-500);font-weight:400}
.breadcrumb a:hover{color:var(--anchor)}
.breadcrumb li:last-child span{color:var(--slate-500);font-weight:400;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60vw}

/* Tieu de muc */
.section{margin-block:1.5rem}
.ad-slot{margin-block:1.25rem;text-align:center;overflow-x:auto}
.ad-slot:empty{display:none}
@media(min-width:64rem){.section{margin-block:2rem}}
.sec-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:16px}
.sec-head .bar{width:4px;height:22px;border-radius:2px;background:var(--anchor);flex:0 0 auto}
.sec-head h1,.sec-head h2{font-size:1.375rem;font-weight:700;letter-spacing:-.01em;line-height:1.2;min-width:0;flex:1 1 auto;color:var(--slate-900)}
.sec-head .view{margin-inline-start:auto;font-weight:700;font-size:13px;color:var(--anchor);white-space:nowrap}
.sec-desc{color:var(--muted);margin:-4px 0 16px;max-width:60ch;font-size:.9rem}
.empty-note{color:var(--muted);padding:1rem 0}
.meta-line{color:#777;display:flex;flex-wrap:wrap;align-items:center;gap:.15rem .5rem;font-size:.8125rem;line-height:1.5}
.meta-line>span{display:inline-flex;align-items:center;gap:.3rem;min-width:0}
.meta-line>span+span::before{content:"·";opacity:.55;margin-inline-end:.5rem}
.line-clamp-2{overflow:hidden;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2}

/* Luoi the bai viet (Related posts) */
.feed-grid{display:grid;grid-template-columns:1fr;gap:1rem}
@media(min-width:40rem){.feed-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:1.25rem}}
@media(min-width:64rem){.feed-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.hover-lift{transition:box-shadow .2s ease,border-color .2s ease}
.hover-lift:hover{box-shadow:0 2px 10px rgba(0,0,0,.08)}
.news-card{display:flex;flex-direction:column;overflow:hidden;border-radius:.5rem;background:#fff;border:1px solid var(--border-soft);box-shadow:none}
.news-card__media{display:block}
.news-card__media img,.news-card__media .no-img{display:block;width:100%;aspect-ratio:1/1;object-fit:cover;background:var(--surface-2)}
.news-card__media .no-img{background:var(--surface-2)}
.feed-grid>*{min-width:0}
.news-card__body{display:flex;flex:1 1 auto;flex-direction:column;gap:.5rem;padding:1rem}
.news-card__cate{display:inline-block;align-self:flex-start;font-size:12px;line-height:24px;height:24px;font-weight:400;color:#fff;padding:0 10px;border-radius:3px}
.news-card__cate:hover{opacity:.85}
.news-card__title{font-size:1.0625rem;line-height:1.35;font-weight:700;letter-spacing:-.005em}
.news-card__title a:hover{color:var(--anchor)}
.news-card .meta-line{margin-top:auto;padding-top:.25rem}
@media(max-width:39.9375rem){
  .news-card--compact{flex-direction:row;align-items:stretch;border-radius:.5rem}
  .news-card--compact .news-card__media{flex:0 0 8.25rem;width:8.25rem}
  .news-card--compact .news-card__media img,.news-card--compact .news-card__media .no-img{height:100%;aspect-ratio:1/1}
  .news-card--compact .news-card__body{gap:.25rem;padding:.625rem .75rem;min-width:0}
  .news-card--compact .news-card__cate{font-size:11px}
  .news-card--compact .news-card__title{font-size:1rem;line-height:1.35}
  .news-card--compact .news-card__title a{-webkit-line-clamp:3}
  .news-card--compact .meta-line{font-size:.75rem}
}
/* Danh sach bai viet (trang chu/danh muc/tim kiem): anh vuong ben trai, chu ben phai, trong khung trang giong site-main */
.news-list{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border-soft);border-radius:.5rem;padding:1.25rem}
.news-list-item{display:flex;gap:1.25rem;padding:1.25rem 0;border-bottom:1px solid var(--border-soft);min-width:0}
.news-list-item:first-child{padding-top:0}
.news-list-item:last-child{padding-bottom:0;border-bottom:0}
.news-list-item__media{flex:0 0 auto;width:9.5rem;border-radius:0;overflow:hidden;background:var(--surface-2)}
.news-list-item__media img,.news-list-item__media .no-img{display:block;width:100%;height:100%;aspect-ratio:1/1;object-fit:cover}
.news-list-item__media .no-img{background:var(--surface-2)}
.news-list-item__body{flex:1 1 0%;min-width:0;max-width:100%;display:flex;flex-direction:column;gap:.5rem}
.news-list-item__title{font-size:1.375rem;line-height:1.3;font-weight:700;letter-spacing:-.005em;overflow-wrap:break-word;color:var(--slate-900)}
.news-list-item__title a:hover{color:var(--anchor)}
.news-list-item__excerpt{color:#666;font-size:.9rem;line-height:1.7;overflow:hidden;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow-wrap:break-word;max-width:100%}
@media(max-width:36rem){
  .news-list{padding:.9rem}
  .news-list-item{gap:.9rem;padding:1rem 0}
  .news-list-item__media{width:6.5rem}
  .news-list-item__title{font-size:1.1rem}
  .news-list-item__excerpt{-webkit-line-clamp:2;font-size:.85rem}
}

.pill-btn{display:inline-flex;align-items:center;justify-content:center;padding:0 1.6rem;height:2.5rem;border-radius:3px;font-weight:700;font-size:.875rem;color:#fff;background:var(--anchor);cursor:pointer;box-shadow:none;transition:opacity .2s}
.pill-btn:hover{opacity:.85}
.pill-btn:disabled{opacity:.6;cursor:wait}

/* Phan trang danh so (1 2 ... 104) */
.pager{display:flex;justify-content:center;margin-top:1.5rem}
.pager__list{display:flex;align-items:center;flex-wrap:wrap;justify-content:center;gap:.35rem}
.pager__num{display:inline-flex;align-items:center;justify-content:center;min-width:2.125rem;height:2.125rem;padding:0 .7rem;border-radius:3px;font-weight:700;font-size:.875rem;color:var(--slate-900)}
.pager__num:hover{background:var(--anchor);color:#fff}
.pager__num.is-current{background:var(--tint);color:var(--anchor)}
.pager__dots{display:inline-flex;align-items:center;justify-content:center;min-width:2.125rem;height:2.125rem;color:var(--slate-500);font-weight:700}

/* Bai viet */
.article-wrap{max-width:73.75rem;margin:0 auto 3rem;padding-inline:.25rem}
.article-wrap>article{background:#fff;border:1px solid var(--border-soft);border-radius:.5rem;padding:1.25rem}
.article-wrap .breadcrumb{margin-bottom:0;border-radius:.5rem .5rem 0 0;border-bottom:0}
.article-wrap .breadcrumb+article{border-radius:0 0 .5rem .5rem}
.article-hero{display:flex;gap:1rem;align-items:flex-start}
.article-hero__media{flex:0 0 auto;width:8.5rem;aspect-ratio:1/1;border-radius:.35rem;overflow:hidden;background:var(--surface-2)}
.article-hero__media picture{display:block;width:100%;height:100%}
.article-hero__media img{width:100%;height:100%;object-fit:cover}
.article-hero__body{flex:1 1 auto;min-width:0}
.article-hero__kicker{display:inline-block;font-size:12px;font-weight:400;color:#fff;padding:0 10px;line-height:24px;height:24px;border-radius:3px}
.cat-c0{background:#2dde98}.cat-c1{background:#1cc7d0}.cat-c2{background:#008eaa}.cat-c3{background:#ff9900}.cat-c4{background:#ff6c5f}
.cat-c5{background:#ff4f81}.cat-c6{background:#b84592}.cat-c7{background:#8e43e7}.cat-c8{background:#3369e7}.cat-c9{background:#00aeff}
.article-hero__title{margin:.5rem 0 .5rem;font-size:1.5rem;font-weight:700;line-height:1.3;letter-spacing:-.005em;color:var(--slate-900)}
.article-hero__meta{font-size:.8125rem}
@media(max-width:40rem){.article-wrap>article{padding:.9rem}.article-hero{gap:.75rem}.article-hero__media{width:5rem;border-radius:.3rem}.article-hero__title{font-size:1.25rem}}
.prose{margin-top:1.25rem;font-size:1rem;line-height:1.8;color:var(--text);overflow-wrap:break-word}
.prose p{margin-block:1.25em}
.prose h2{margin:1.25em 0 .6em;font-size:1.5em;font-weight:700;line-height:1.35;color:var(--slate-900)}
.prose h3{margin:1.15em 0 .5em;font-size:1.25em;font-weight:700;line-height:1.35;color:var(--slate-900)}
.prose h4{margin:1.1em 0 .4em;font-weight:700;color:var(--slate-900)}
.prose ul,.prose ol{margin-block:1.25em;padding-inline-start:1.625em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin-block:.5em}
.prose a{color:var(--anchor);text-decoration:underline;font-weight:400}
.prose a:hover{color:var(--accent-2)}
.prose blockquote{margin-block:1.25em;padding:.25em 1.1em;border-inline-start:4px solid var(--border-soft);color:#999;font-style:italic}
.prose img{margin-block:1.5em;border-radius:.35rem;height:auto}
.prose hr{border-top:1px solid var(--border-soft);margin-block:1.5rem}
.prose pre{overflow-x:auto;padding:1rem;background:#222;color:#fff;border-radius:.35rem;font-size:.9em}
.prose>:first-child{margin-top:0}
.prose>:last-child{margin-bottom:0}
.related{margin-top:2.5rem}

/* Dieu huong trang doc (bai nhieu phan) */
.chapter-nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-top:1.5rem;padding:1rem;background:#fff;border:1px solid var(--border-soft);border-radius:.5rem;box-shadow:none}
.chapter-nav__btn{display:inline-flex;align-items:center;padding:0 1.1rem;height:2.375rem;border-radius:3px;font-weight:700;font-size:.875rem;color:var(--slate-900);background:var(--tint);border:1px solid var(--border-soft);transition:background .2s,color .2s,border-color .2s}
.chapter-nav__btn:hover{background:var(--anchor);color:#fff;border-color:var(--anchor)}
.chapter-nav__btn.is-disabled{color:#bbb;background:var(--surface-2);border-color:var(--border-soft);pointer-events:none}
.chapter-nav__status{font-weight:700;color:var(--slate-900);white-space:nowrap}
.chapter-nav__nums{display:flex;align-items:center;gap:.5rem;overflow-x:auto;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;flex:1 1 auto;max-width:16rem;margin:0 auto;padding:.3rem;scrollbar-width:thin}
.chapter-nav__nums::-webkit-scrollbar{height:5px}
.chapter-nav__nums::-webkit-scrollbar-thumb{background:var(--border-soft);border-radius:99px}
.chapter-nav__num{flex:0 0 auto;scroll-snap-align:center;display:inline-flex;align-items:center;justify-content:center;width:2.375rem;height:2.375rem;border-radius:999px;font-weight:700;font-size:.875rem;color:var(--slate-900);background:var(--tint);border:1px solid var(--border-soft);transition:background .2s,color .2s,border-color .2s,box-shadow .2s,transform .2s}
.chapter-nav__num:hover{background:var(--anchor);color:#fff;border-color:var(--anchor)}
.chapter-nav__num.is-current{background:var(--anchor);color:#fff;border-color:var(--anchor);box-shadow:0 0 0 4px rgba(var(--glow-rgb),.35),0 0 16px rgba(var(--glow-rgb),.6);transform:scale(1.1)}
@media(max-width:30rem){
  .chapter-nav{flex-wrap:wrap;justify-content:space-between;gap:.5rem .5rem;padding:.85rem}
  .chapter-nav__nums{order:-1;flex-basis:100%;max-width:100%;margin-bottom:.15rem}
  .chapter-nav__btn{flex:0 1 auto;padding:0 .7rem;font-size:.8125rem}
}
@media(max-width:22rem){
  .chapter-nav__btn{padding:0 .5rem;font-size:.75rem}
}

.content-lock__box{display:flex;flex-direction:column;align-items:center;text-align:center;gap:.6rem;padding:2.25rem 1.5rem;background:#fff;border:1px solid var(--border-soft);border-radius:.5rem;box-shadow:var(--shadow-lift)}
.content-lock__box[hidden],.content-lock__real[hidden]{display:none}
.content-lock__img{max-width:220px;width:100%;height:auto;border-radius:.4rem;margin-bottom:.4rem}
.content-lock__title{font-size:1.15rem;font-weight:800;color:var(--slate-900);letter-spacing:.02em}
.content-lock__desc{color:var(--muted);font-size:.9rem;max-width:26rem}
.content-lock__retry{margin-top:.4rem}
.content-lock-modal{display:none;position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,.55);align-items:center;justify-content:center;padding:1rem}
.content-lock-modal.is-open{display:flex}
.content-lock-modal__panel{position:relative;width:100%;max-width:24rem;background:#fff;border-radius:.6rem;padding:2rem 1.5rem 1.75rem;display:flex;flex-direction:column;align-items:center;text-align:center;gap:.6rem;box-shadow:0 10px 40px rgba(0,0,0,.25)}
.content-lock-modal__panel h2{font-size:1.15rem;font-weight:800;color:var(--slate-900)}
.content-lock-modal__panel p{color:var(--muted);font-size:.9rem}
.content-lock-modal__close{position:absolute;top:.5rem;right:.6rem;width:2rem;height:2rem;border-radius:999px;background:var(--tint);color:var(--slate-900);font-size:1.25rem;line-height:1;display:flex;align-items:center;justify-content:center;cursor:pointer}
.content-lock-modal__close:hover{background:var(--anchor);color:#fff}
.content-lock-modal__link{display:inline-flex;align-items:center;justify-content:center;margin-top:.5rem;padding:0 1.6rem;height:2.5rem;border-radius:3px;font:inherit;font-weight:700;font-size:.9rem;color:#fff;background:var(--anchor);text-decoration:none;cursor:pointer}
.content-lock-modal__link:hover{opacity:.85}

/* Footer */
.site-footer{margin-top:3rem;background:#222;border-width:1px 0 0;border-color:#333}
.footer-inner{padding-block:1.75rem;text-align:center}
.footer-logo{display:inline-block;margin-bottom:1rem}
.footer-links{margin-top:1rem;border-top:1px solid #333;padding-top:1rem}
.footer-links nav{display:flex;flex-wrap:wrap;justify-content:center;gap:.6rem 1.5rem}
.footer-links a{font-size:.8125rem;color:rgba(255,255,255,.7);transition:color .2s}
.footer-links a:hover{color:var(--anchor)}
.footer-bottom{margin-top:1rem;display:flex;flex-direction:column;align-items:center;gap:.6rem}
.footer-bottom p{font-size:.8125rem;color:rgba(255,255,255,.6)}
.to-top{font-size:.8125rem;font-weight:600;color:rgba(255,255,255,.6);transition:color .2s}
.to-top:hover{color:var(--anchor)}
@media(min-width:40rem){.footer-bottom{flex-direction:row;align-items:center;justify-content:center}}

/* Thanh cong cu nhan vien (chi hien khi da dang nhap) */
.staff-bar{position:fixed;left:1rem;bottom:1rem;z-index:100;display:flex;gap:.5rem;padding:.4rem;border-radius:.6rem;background:rgba(15,23,42,.92);box-shadow:0 10px 30px -10px rgba(2,6,23,.6)}
.staff-bar a{display:inline-flex;align-items:center;gap:.3rem;padding:.45rem .8rem;border-radius:.4rem;font-size:.85rem;font-weight:700;color:#fff;background:rgba(255,255,255,.1);white-space:nowrap}
.staff-bar a:hover{background:rgba(255,255,255,.22)}

a:focus-visible,button:focus-visible{outline:2px solid var(--anchor);outline-offset:2px;border-radius:.25rem}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}