/* NP Reading 3.1 — trang bài viết dài, ưu tiên dễ đọc trên nền tối. */
.single-post #primary{padding-top:0!important}
.np-article{--np-col:700px;--np-toc:232px;--np-gap:64px;--np-frame:calc(var(--np-col) + var(--np-toc) + var(--np-gap));color:var(--np-ui-soft);overflow-x:clip}
.np-article__frame,.np-related .np-article__frame{width:100%;max-width:calc(var(--np-frame) + 48px);margin:0 auto;padding:0 24px}
.np-related{--np-frame:996px}
@media(max-width:639px){.np-article__frame,.np-related .np-article__frame{padding:0 18px}}

/* ---------- Hero ---------- */
.np-article__hero{position:relative;padding-top:40px;padding-bottom:28px}
@media(max-width:1179px){.np-article__hero,.np-article__cover{max-width:calc(var(--np-col) + 48px)}}
.np-article__hero::before{content:"";position:absolute;top:-40px;left:50%;width:100vw;transform:translateX(-50%);height:460px;z-index:-1;pointer-events:none;-webkit-mask-image:linear-gradient(#000 30%,transparent);mask-image:linear-gradient(#000 30%,transparent);background:radial-gradient(60% 70% at 15% 0%,rgba(34,211,238,.10),transparent 70%),radial-gradient(50% 60% at 85% 10%,rgba(168,85,247,.10),transparent 70%)}
.np-article__crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:18px;font-size:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--np-ui-muted)}
.np-article__crumbs a{color:var(--np-ui-muted)!important;text-decoration:none!important}
.np-article__crumbs a:last-child{color:#67e8f9!important}
.np-article__crumbs a:hover{color:#fff!important}
.np-article__title{max-width:22ch;margin:0;font-size:clamp(1.95rem,1.25rem + 2.9vw,3.35rem);line-height:1.13;font-weight:800;letter-spacing:-.028em;color:#fff;text-wrap:balance}
.np-article__dek{max-width:var(--np-col);margin:18px 0 0;font-size:clamp(1.08rem,1rem + .35vw,1.25rem);line-height:1.6;color:#b9c6d8;text-wrap:pretty}
.np-article__byline{display:flex;align-items:center;gap:12px;margin-top:26px;padding-top:20px;border-top:1px solid var(--np-ui-line)}
.np-avatar{display:grid;place-items:center;width:40px;height:40px;flex-shrink:0;border-radius:50%;background:var(--np-ui-grad);color:#0a1020;font-size:14px;font-weight:800;letter-spacing:.02em}
.np-article__who{display:flex;flex-direction:column;gap:3px;min-width:0;margin-right:auto}
.np-article__author a{color:#fff!important;font-weight:700;font-size:15px;text-decoration:none!important}
.np-article__facts{display:flex;flex-wrap:wrap;gap:6px;font-size:13.5px;color:var(--np-ui-muted)}
.np-share{display:flex;gap:8px;flex-wrap:wrap}
.np-share__btn{display:inline-grid;place-items:center;min-width:40px;height:40px;padding:0 10px;border:1px solid var(--np-ui-line-strong);border-radius:999px;background:transparent;color:#dbe4ef!important;font:inherit;font-size:14px;font-weight:700;text-decoration:none!important;cursor:pointer;transition:border-color .2s,background .2s,color .2s}
.np-share__btn:hover{border-color:#38bdf8;background:rgba(56,189,248,.1);color:#fff!important}
.np-share__btn svg{width:18px;height:18px}
.np-share__btn--wide{padding:0 16px}
.np-software{display:inline-flex;align-items:center;gap:14px;margin-top:22px;padding:12px 18px 12px 12px;border:1px solid var(--np-ui-line-strong);border-radius:14px;background:var(--np-ui-panel);text-decoration:none!important}
.np-software img{width:48px;height:48px;border-radius:12px;margin:0}
.np-software strong{display:block;color:#fff;font-size:17px}.np-software small{color:var(--np-ui-muted)}

/* ---------- Ảnh bìa ---------- */
.np-article__cover{margin:4px auto 8px}
.np-media--cover{border-radius:20px;box-shadow:0 0 0 1px var(--np-ui-line),0 30px 60px -30px rgba(0,0,0,.8)}

/* ---------- Bố cục: mục lục + cột chữ ---------- */
.np-article__layout{display:grid;grid-template-columns:minmax(0,var(--np-col));justify-content:center;padding-top:24px}
.np-article__main{min-width:0}
.np-toc{display:none}
@media(min-width:1180px){
  .np-article__layout{grid-template-columns:var(--np-toc) minmax(0,var(--np-col));gap:var(--np-gap);justify-content:space-between}
  .np-article__hero,.np-article__cover{padding-left:calc(var(--np-toc) + var(--np-gap) + 24px)}
  .np-article__title{max-width:20ch}
  .np-toc:not([hidden]){display:block}
}
.np-toc__inner{position:sticky;top:96px;max-height:calc(100vh - 120px);overflow:auto;padding:4px 4px 16px 0;scrollbar-width:thin}
.np-toc__label{margin:0 0 12px;font-size:11.5px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--np-ui-muted)}
.np-toc__list{list-style:none!important;margin:0!important;padding:0!important;counter-reset:np-toc;border-left:1px solid var(--np-ui-line)}
.np-toc__list li{margin:0!important;padding:0!important}
.np-toc__list li::before{display:none!important}
.np-toc__list a{position:relative;display:block;margin-left:-1px;padding:7px 0 7px 16px;border-left:2px solid transparent;font-size:14px;line-height:1.45;font-weight:500;color:#8fa0b5!important;text-decoration:none!important;transition:color .2s,border-color .2s}
.np-toc__list a:hover{color:#e2e8f0!important}
.np-toc__list a.is-active{color:#fff!important;font-weight:700;border-left-color:#22d3ee}
.np-toc__list a.is-done{color:#b7c3d3!important}
.np-toc__progress{display:flex;align-items:center;gap:10px;margin-top:18px;font-size:12px;font-weight:700;color:var(--np-ui-muted)}
.np-toc__bar{flex:1;height:4px;border-radius:9px;background:rgba(148,163,184,.16);overflow:hidden}
.np-toc__bar i{display:block;height:100%;width:0;background:var(--np-ui-grad);border-radius:inherit}

/* ---------- Văn bản ---------- */
.np-prose{counter-reset:np-h2;font-size:1.15rem;line-height:1.8;color:#c9d4e3;overflow-wrap:break-word;-webkit-text-size-adjust:100%;text-rendering:optimizeLegibility;font-feature-settings:"kern","liga","calt"}
.np-prose>*{margin-top:0;margin-bottom:0}
.np-prose p{margin:0 0 1.3em!important;font-size:inherit!important;line-height:inherit!important;color:inherit!important;text-wrap:pretty}
.np-prose>p:first-child{font-size:1.24em!important;line-height:1.7!important;color:#e3eaf3!important}
.np-prose strong,.np-prose b{color:#f8fafc;font-weight:700}
.np-prose em{color:#dde6f1}
.np-prose a{color:#7dd3fc!important;font-weight:600;border-bottom:0!important;text-decoration:underline!important;text-decoration-color:rgba(125,211,252,.4)!important;text-decoration-thickness:1px!important;text-underline-offset:3px;padding:0!important;margin:0!important;background:none!important;transition:text-decoration-color .2s,color .2s}
.np-prose a:hover{color:#bae6fd!important;text-decoration-color:currentColor!important}

.np-prose h2,.np-prose h3,.np-prose h4{color:#fff!important;scroll-margin-top:96px;text-wrap:balance}
.np-prose h2{position:relative;margin:2.6em 0 .75em!important;padding:1.15em 0 0!important;border:0!important;border-top:1px solid var(--np-ui-line)!important;font-size:clamp(1.45rem,1.15rem + 1vw,1.85rem)!important;line-height:1.28!important;font-weight:800!important;letter-spacing:-.018em}
.np-prose h2::before{counter-increment:np-h2;content:counter(np-h2,decimal-leading-zero);display:block;margin-bottom:.55em;font-size:.5em;font-weight:800;letter-spacing:.2em;background:var(--np-ui-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.np-prose h3{margin:2em 0 .55em!important;font-size:clamp(1.17rem,1.08rem + .35vw,1.32rem)!important;line-height:1.4!important;font-weight:700!important;letter-spacing:-.01em}
.np-prose h4{margin:1.6em 0 .5em!important;font-size:1.08rem!important}
.np-prose h2+h3{margin-top:.6em!important}

/* Danh sách */
.np-prose ul,.np-prose ol{margin:0 0 1.4em!important;padding-left:0!important;list-style:none!important}
.np-prose li{position:relative;margin:0 0 .55em!important;padding-left:1.7em}
.np-prose ul>li::before{content:"";position:absolute;left:.35em;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--np-ui-grad)}
.np-prose ol{counter-reset:np-ol}
.np-prose ol>li{counter-increment:np-ol}
.np-prose ol>li::before{content:counter(np-ol);position:absolute;left:0;top:.2em;display:grid;place-items:center;width:1.45em;height:1.45em;border-radius:50%;background:rgba(56,189,248,.14);color:#7dd3fc;font-size:.78em;font-weight:800}
.np-prose li>ul,.np-prose li>ol{margin:.5em 0 0!important}

/* Ảnh & infographic */
.np-prose figure{margin:2.2em 0!important}
.np-prose img{display:block;width:100%;height:auto;margin:0 auto!important;border-radius:14px!important;box-shadow:0 0 0 1px var(--np-ui-line),0 24px 50px -30px rgba(0,0,0,.85)!important}
.np-prose p>img{margin:2em auto!important}
.np-prose figcaption{margin-top:.85em;padding:0 1em;text-align:center;font-size:.86rem;line-height:1.55;color:var(--np-ui-muted)}
.np-prose .np-player,.np-prose .tns-video-responsive-wrapper{margin:2em 0!important;border-radius:16px;overflow:hidden}

/* Trích dẫn, tóm tắt, callout */
.np-prose blockquote{margin:2em 0!important;padding:1.3em 1.5em!important;border:1px solid var(--np-ui-line)!important;border-left:3px solid #818cf8!important;border-radius:0 14px 14px 0;background:linear-gradient(180deg,rgba(129,140,248,.07),rgba(15,22,37,.6))!important;color:#d7e0ec;font-size:1.02em}
.np-prose blockquote p:last-child,.np-prose blockquote ul:last-child{margin-bottom:0!important}
.np-prose blockquote.np-summary{position:relative;padding:1.5em 1.6em 1.2em!important;border:1px solid rgba(34,211,238,.28)!important;border-radius:18px;background:radial-gradient(120% 140% at 0% 0%,rgba(34,211,238,.10),transparent 55%),#0f1625!important;font-size:.98em}
.np-prose blockquote.np-summary>p:first-child{display:flex;align-items:center;gap:.55em;margin-bottom:.9em!important;font-size:.78em!important;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:#67e8f9!important}
.np-prose blockquote.np-summary>p:first-child strong{color:inherit}
.np-prose blockquote.np-summary>p:first-child::before{content:"✦";font-size:1.25em;background:var(--np-ui-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.np-prose blockquote.np-summary li{margin-bottom:.6em!important;padding-left:1.8em}
.np-prose blockquote.np-summary ul>li::before{content:"✓";top:.05em;left:0;width:auto;height:auto;background:none;color:#5eead4;font-weight:800;font-size:.95em}
.np-prose .np-callout{padding:1.1em 1.3em!important;border-radius:14px;background:rgba(56,189,248,.07);border:1px solid rgba(56,189,248,.22);color:#dbe6f2!important}
.np-prose .np-callout>strong:first-child{display:block;margin-bottom:.3em;font-size:.78em;letter-spacing:.14em;text-transform:uppercase;color:#7dd3fc}

/* Mục lục có sẵn trong nội dung */
.np-prose .np-inline-toc{margin:2em 0!important;padding:0!important;border:1px solid var(--np-ui-line-strong);border-radius:16px;background:var(--np-ui-panel-2);overflow:hidden}
.np-prose .np-inline-toc summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:1em 1.3em;cursor:pointer;list-style:none;font-weight:800;color:#fff;font-size:.98em}
.np-prose .np-inline-toc summary::-webkit-details-marker{display:none}
.np-prose .np-inline-toc summary::after{content:"";width:9px;height:9px;border-right:2px solid #8fa0b5;border-bottom:2px solid #8fa0b5;transform:rotate(45deg) translateY(-3px);transition:transform .25s}
.np-prose .np-inline-toc[open] summary::after{transform:rotate(225deg) translateY(-2px)}
.np-prose .np-inline-toc summary small{margin-left:auto;font-weight:600;color:var(--np-ui-muted);font-size:.85em}
.np-prose .np-inline-toc ol{margin:0!important;padding:0 1.3em 1.1em!important}
.np-prose .np-inline-toc li{font-size:.95em;margin-bottom:.45em!important}
.np-prose .np-inline-toc a{font-weight:500;text-decoration:none!important;color:#cfe0ef!important}
.np-prose .np-inline-toc a:hover{color:#fff!important}
@media(min-width:1180px){.np-prose .np-inline-toc.has-sidebar{display:none}}

/* Bảng */
.np-prose .np-table{margin:2em 0!important;border:1px solid var(--np-ui-line-strong);border-radius:14px;overflow-x:auto;-webkit-overflow-scrolling:touch;background:var(--np-ui-panel-2)}
.np-prose table{display:table!important;width:100%;min-width:480px;margin:0!important;border-collapse:collapse;font-size:.92em!important;line-height:1.55}
.np-prose caption{caption-side:top;padding:.9em 1.1em;text-align:left;font-size:.92em;font-weight:700;color:#e2e8f0;border-bottom:1px solid var(--np-ui-line)}
.np-prose th,.np-prose td{padding:.75em 1.1em!important;border:0!important;border-bottom:1px solid var(--np-ui-line)!important;text-align:left;vertical-align:top}
.np-prose thead th{background:rgba(148,163,184,.08);color:#fff;font-size:.82em;font-weight:800;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap}
.np-prose tbody tr:last-child>*{border-bottom:0!important}
.np-prose tbody tr:nth-child(even){background:rgba(148,163,184,.035)}
.np-prose tbody th{color:#f1f5f9;font-weight:700}

/* Code */
.np-prose :not(pre)>code{padding:.15em .4em;border-radius:6px;background:rgba(148,163,184,.14);color:#f0abfc;font-size:.88em}
.np-prose pre{margin:1.8em 0!important;padding:1.1em 1.3em!important;border-radius:14px;border:1px solid var(--np-ui-line);background:#0a1020!important;font-size:.88em;line-height:1.6}
.np-prose hr{margin:2.5em 0!important;border:0;height:1px;background:var(--np-ui-line)}

/* Khối "Đọc thêm" giữa bài */
.np-prose .np-readmore{margin:2.4em 0!important}
.np-prose .np-readmore a{display:flex;align-items:center;gap:16px;padding:14px 18px 14px 14px;border:1px solid var(--np-ui-line-strong);border-radius:16px;background:linear-gradient(100deg,rgba(34,211,238,.07),rgba(129,140,248,.05) 60%,transparent),var(--np-ui-panel-2);text-decoration:none!important;color:inherit!important;font-weight:400;transition:border-color .2s,transform .2s}
.np-prose .np-readmore a:hover{border-color:#22d3ee;transform:translateY(-1px)}
.np-prose .np-readmore__media{flex-shrink:0;width:132px;aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:#0a1020}
.np-prose .np-readmore__media img{width:100%!important;height:100%!important;object-fit:cover;margin:0!important;border-radius:0!important;box-shadow:none!important}
.np-prose .np-readmore__body{display:flex;flex-direction:column;gap:4px;min-width:0}
.np-prose .np-readmore__label{font-size:11px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:#67e8f9}
.np-prose .np-readmore__title{font-size:1rem;line-height:1.4;font-weight:700;color:#fff;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.np-prose .np-readmore__arrow{margin-left:auto;flex-shrink:0;font-size:1.3rem;color:#8fa0b5}
@media(max-width:519px){.np-prose .np-readmore__media{width:96px}.np-prose .np-readmore__arrow{display:none}.np-prose .np-readmore__title{font-size:.95rem;-webkit-line-clamp:3}}

/* ---------- Cuối bài ---------- */
.np-article__footer{margin-top:3em}
.np-endcard{display:grid;grid-template-columns:auto 1fr;gap:16px 18px;align-items:center;padding:22px;border:1px solid var(--np-ui-line-strong);border-radius:20px;background:radial-gradient(120% 140% at 100% 0%,rgba(232,121,249,.09),transparent 55%),radial-gradient(100% 120% at 0% 100%,rgba(34,211,238,.08),transparent 55%),var(--np-ui-panel-2)}
.np-endcard__svg{width:48px;height:48px;display:block}
.np-endcard__title{margin:0 0 4px;color:#fff;font-weight:800;font-size:1.08rem}
.np-endcard__text{margin:0;color:var(--np-ui-muted);font-size:.95rem;line-height:1.55}
.np-endcard .np-share{grid-column:1/-1}
.np-taglist{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.np-taglist a{padding:6px 12px;border:1px solid var(--np-ui-line-strong);border-radius:999px;font-size:13.5px;font-weight:600;color:#c3cede!important;text-decoration:none!important}
.np-taglist a:hover{border-color:#a78bfa;color:#fff!important}
.np-taglist .np-taglist__cat{border-color:rgba(34,211,238,.4);color:#67e8f9!important}
.np-related{margin-top:64px;padding:52px 0 64px;border-top:1px solid var(--np-ui-line);background:linear-gradient(180deg,#0d1320,transparent)}
.np-related__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 24px}
@media(max-width:899px){.np-related__grid{grid-template-columns:1fr 1fr}}
@media(max-width:579px){.np-related__grid{grid-template-columns:1fr}}

/* ---------- Thanh tiến độ, nút mục lục, toast ---------- */
.np-progress{position:fixed;left:0;right:0;top:0;height:3px;z-index:1000;pointer-events:none}
.np-progress i{display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:0 50%;background:var(--np-ui-grad);box-shadow:0 0 12px rgba(129,140,248,.6)}
.np-fab{position:fixed;right:16px;bottom:18px;z-index:900;display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 18px 0 14px;border:1px solid var(--np-ui-line-strong);border-radius:999px;background:rgba(12,18,30,.92);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:#fff;font:inherit;font-size:14px;font-weight:700;box-shadow:0 16px 40px -12px rgba(0,0,0,.8);cursor:pointer;transform:translateY(90px);opacity:0;transition:transform .35s cubic-bezier(.2,.8,.2,1),opacity .35s}
.np-fab.is-shown{transform:none;opacity:1}
.np-fab svg{width:20px;height:20px}
@media(min-width:1180px){.np-fab{display:none!important}}
.np-sheet{position:fixed;inset:0;z-index:1100}
.np-sheet[hidden]{display:none}
.np-sheet__backdrop{position:absolute;inset:0;background:rgba(2,6,14,.6)}
.np-sheet__panel{position:absolute;left:0;right:0;bottom:0;max-height:78vh;overflow:auto;padding:8px 20px 28px;border-radius:22px 22px 0 0;border-top:1px solid var(--np-ui-line-strong);background:#0f1625;animation:np-sheet-in .3s cubic-bezier(.2,.8,.2,1)}
.np-sheet__head{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;padding:12px 0;background:#0f1625}
.np-sheet__head p{margin:0;font-weight:800;color:#fff}
.np-sheet__head button{width:40px;height:40px;border:1px solid var(--np-ui-line-strong);border-radius:50%;background:transparent;color:#fff;font-size:15px;cursor:pointer}
.np-sheet .np-toc__list a{font-size:15.5px;padding:10px 0 10px 16px}
@keyframes np-sheet-in{from{transform:translateY(40px);opacity:0}}
.np-toast{position:fixed;left:50%;bottom:80px;z-index:1200;padding:10px 16px;border-radius:999px;background:#fff;color:#0a1020;font-size:14px;font-weight:700;transform:translate(-50%,20px);opacity:0;pointer-events:none;transition:transform .3s,opacity .3s}
.np-toast.is-on{transform:translate(-50%,0);opacity:1}

/* ---------- Mobile ---------- */
@media(max-width:639px){
  .np-article__hero{padding-top:24px}
  .np-article__byline{flex-wrap:wrap}
  .np-article__byline>.np-share{width:100%}
  .np-prose{font-size:1.075rem;line-height:1.78}
  .np-prose>p:first-child{font-size:1.15em!important}
  .np-media--cover{border-radius:14px}
  .np-prose blockquote{padding:1.1em 1.15em!important}
  .np-endcard{padding:18px}
}
@media(prefers-reduced-motion:reduce){.np-fab,.np-sheet__panel,.np-toast{transition:none;animation:none}}
@media print{.np-toc,.np-fab,.np-progress,.np-share,.np-related,.site-header,#top-banner-ad{display:none!important}.np-prose{color:#000}}