/* =====================================================================
   Tekservix Blog — public pages rendered by /blog.php (prefix .bx-)
   Builds on tx-shell.css tokens and tx.css components; light + dark.
   ===================================================================== */
.bx-body{background:var(--tx-bg)}
.bx{font-family:var(--tx-font);color:var(--tx-ink)}
.bx *,.bx *::before,.bx *::after{box-sizing:border-box}
.bx a{color:inherit}
.bx-wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.bx-sr,.bx-hp{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.bx-i{width:1em;height:1em;flex:none;vertical-align:-.14em}
.bx-sec{padding:34px 24px 56px}
.bx-sec-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:40px 0 18px}
.bx-sec-h{font-size:clamp(1.25rem,2.2vw,1.55rem);font-weight:800;letter-spacing:-.02em;margin:0}
.bx-rss{display:inline-flex;align-items:center;gap:6px;font-size:.86rem;font-weight:600;color:var(--tx-muted)!important;text-decoration:none}
.bx-rss:hover{color:var(--tx-brand)!important}
.bx-count{color:var(--tx-muted);font-size:.9rem;margin:0 0 16px}

/* hero + search */
.bx-hero{padding:60px 0 64px}
.bx-hero--sm{padding:44px 0 48px}
.bx-hero .tx-eyebrow .bx-i{width:15px;height:15px}
.bx-search{display:flex;align-items:center;gap:8px;max-width:620px;margin:28px auto 0;padding:6px 6px 6px 16px;border-radius:14px;background:var(--tx-surface);border:1px solid var(--tx-line);box-shadow:0 18px 40px -18px rgba(11,16,32,.45)}
.bx-search>.bx-i{width:19px;height:19px;color:var(--tx-faint)}
.bx-search input{flex:1;min-width:0;height:44px;border:0;background:transparent;font:500 1rem var(--tx-font);color:var(--tx-ink);outline:none}
.bx-search input::placeholder{color:var(--tx-faint)}
.bx-search .tx-btn{--h:44px;padding:0 20px}

/* category chips */
.bx-chips{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 8px}
.bx-chips .tx-chip{text-decoration:none!important}
.bx-chips small{font-size:.74rem;opacity:.65;font-weight:600}

/* category pill */
.bx-cat{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;background:var(--tx-brand-50);color:var(--tx-brand)!important;font-size:.76rem;font-weight:700;letter-spacing:.01em;text-decoration:none!important;white-space:nowrap}
.bx-cat:hover{background:var(--tx-brand-100)}

/* avatar */
.bx-av{border-radius:50%;object-fit:contain;flex:none;background:#fff;border:1px solid var(--tx-line);padding:2px}
.bx-av--ini{display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--tx-brand),#8B5CF6);color:#fff;font-weight:700;font-size:.8em}

/* placeholders for articles without a cover */
.bx-ph{position:absolute;inset:0;display:flex;align-items:flex-end;padding:18px;background:linear-gradient(140deg,#1E1B4B,#4338CA 60%,#6366F1);overflow:hidden}
.bx-ph::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:28px 28px}
.bx-ph::after{content:"";position:absolute;width:60%;aspect-ratio:1;right:-12%;top:-30%;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.28),transparent 65%)}
.bx-ph b{position:relative;z-index:1;color:#fff;font-size:1.05rem;font-weight:800;letter-spacing:-.01em;opacity:.95}
.bx-ph--1{background:linear-gradient(140deg,#0C4A6E,#0284C7 60%,#38BDF8)}
.bx-ph--2{background:linear-gradient(140deg,#064E3B,#059669 60%,#34D399)}
.bx-ph--3{background:linear-gradient(140deg,#4C1D95,#7C3AED 60%,#C084FC)}
.bx-ph--4{background:linear-gradient(140deg,#7C2D12,#EA580C 60%,#FB923C)}

/* cards */
.bx-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.bx-card{display:flex;flex-direction:column;background:var(--tx-surface);border:1px solid var(--tx-line);border-radius:var(--tx-r-xl);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.bx-card:hover{transform:translateY(-3px);box-shadow:var(--tx-sh-lg);border-color:var(--tx-line-2)}
.bx-card-img{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--tx-surface-2)}
.bx-card-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.bx-card:hover .bx-card-img img{transform:scale(1.04)}
.bx-card-b{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:20px 22px 22px;flex:1}
.bx-card-t{font-size:1.14rem;line-height:1.35;font-weight:750;font-weight:700;letter-spacing:-.015em;margin:0}
.bx-card-t a{text-decoration:none!important;background-image:linear-gradient(currentColor,currentColor);background-size:0 1.5px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .25s}
.bx-card-t a:hover{background-size:100% 1.5px;color:var(--tx-brand)}
.bx-card-t a::after{content:"";position:absolute;inset:0}
.bx-card{position:relative}
.bx-card .bx-cat{position:relative;z-index:1}
.bx-card-x{color:var(--tx-muted);font-size:.93rem;line-height:1.6;margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.bx-card-m{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px;font-size:.8rem;color:var(--tx-muted)}
.bx-card-m i{width:3px;height:3px;border-radius:50%;background:var(--tx-faint)}
.bx-card-m span:first-of-type{font-weight:600;color:var(--tx-ink-2)}

/* featured */
.bx-feature{position:relative;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);align-items:center;margin:28px 0 8px;background:var(--tx-surface);border:1px solid var(--tx-line);border-radius:28px;overflow:hidden;box-shadow:var(--tx-sh)}
.bx-feature-img{position:relative;display:block;aspect-ratio:16/9;background:var(--tx-surface-2)}
.bx-feature-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.bx-feature-b{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:12px;padding:30px 40px}
.bx-feature-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.bx-flag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:999px;background:var(--tx-warn-50);color:var(--tx-warn);font-size:.76rem;font-weight:700}
.bx-feature-t{font-size:clamp(1.4rem,2.2vw,1.8rem);line-height:1.2;font-weight:800;letter-spacing:-.025em;margin:0}
.bx-feature-t a{text-decoration:none!important}
.bx-feature-t a:hover{color:var(--tx-brand)}
.bx-feature-b>p{color:var(--tx-muted);font-size:1.02rem;line-height:1.65;margin:0}
.bx-feature .bx-card-m{margin-top:0;padding:0}
.bx-feature-go{margin-top:6px}
.bx-feature-go .bx-i{width:16px;height:16px}

/* most read */
.bx-popular{margin-top:56px;padding:28px 30px;border-radius:var(--tx-r-xl);background:var(--tx-surface);border:1px solid var(--tx-line)}
.bx-popular ol{list-style:none;margin:18px 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px 28px}
.bx-popular li{display:flex;gap:14px;align-items:flex-start}
.bx-rank{flex:none;font-size:1.9rem;font-weight:800;line-height:1;color:var(--tx-brand-200);min-width:30px}
.bx-popular a{font-weight:700;line-height:1.4;text-decoration:none!important}
.bx-popular a:hover{color:var(--tx-brand)}
.bx-popular .bx-card-m{padding-top:6px}

/* pagination */
.bx-pager{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:40px;flex-wrap:wrap}
.bx-pg-n{display:flex;gap:6px;flex-wrap:wrap}
.bx-pg{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:42px;height:42px;padding:0 12px;border-radius:12px;border:1px solid var(--tx-line);background:var(--tx-surface);font-weight:600;font-size:.9rem;text-decoration:none!important;color:var(--tx-ink-2)!important}
a.bx-pg:hover{border-color:var(--tx-brand);color:var(--tx-brand)!important}
.bx-pg.is-on{background:var(--tx-brand);border-color:var(--tx-brand);color:#fff!important}
.bx-pg.is-gap{border:0;background:none;min-width:20px;padding:0}
.bx-pg.is-off{opacity:.45}
.bx-pg .bx-i{width:16px;height:16px}

/* empty */
.bx-empty{text-align:center;padding:64px 20px;border:1px dashed var(--tx-line-2);border-radius:var(--tx-r-xl);background:var(--tx-surface);margin-top:24px}
.bx-empty>.bx-i{display:block;width:36px;height:36px;margin:0 auto;color:var(--tx-brand)}
.bx-empty h2{font-size:1.3rem;margin:12px 0 6px}
.bx-empty p{color:var(--tx-muted);margin:0 auto;max-width:520px}
.bx-empty a{color:var(--tx-brand)}

/* newsletter */
.bx-news{padding:0 24px;margin:8px 0 56px}
.bx-news-in{max-width:1192px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:28px;align-items:center;padding:36px 40px;border-radius:28px;color:#fff;background:radial-gradient(600px 260px at 100% 0,rgba(138,130,255,.5),transparent 60%),linear-gradient(140deg,#161339,#2A2380 60%,#4338CA)}
.bx-news h2{color:#fff;font-size:clamp(1.3rem,2.4vw,1.7rem);font-weight:800;letter-spacing:-.02em;margin:0 0 8px}
.bx-news p{color:#C9CFFF;margin:0;line-height:1.6}
.bx-news-f{display:flex;flex-wrap:wrap;gap:10px}
.bx-news-f input[type=email]{flex:1;min-width:200px;height:48px;padding:0 16px;border-radius:12px;border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.1);color:#fff;font:500 .98rem var(--tx-font);outline:none}
.bx-news-f input[type=email]::placeholder{color:#AEB6FF}
.bx-news-f input[type=email]:focus{border-color:#fff;background:rgba(255,255,255,.16)}
.bx-news-f .tx-btn{--h:48px;background:#fff;color:#2A2380;padding:0 22px}
.bx-news-f .tx-btn:hover{background:#E0E3FF}
.bx-news-msg{flex-basis:100%;font-size:.88rem;min-height:1.2em}
.bx-news-msg.is-ok{color:#86EFAC}.bx-news-msg.is-err{color:#FCA5A5}

/* tools band */
.bx-tools{padding:0 0 64px}
.bx-tools-g{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:18px}
.bx-tool{display:flex;flex-direction:column;gap:8px;padding:22px;border-radius:var(--tx-r-lg);background:var(--tx-surface);border:1px solid var(--tx-line);text-decoration:none!important;transition:border-color .2s,box-shadow .2s,transform .2s}
.bx-tool:hover{border-color:var(--tx-brand);box-shadow:var(--tx-sh);transform:translateY(-2px)}
.bx-tool b{font-size:1rem}
.bx-tool span{font-size:.88rem;color:var(--tx-muted);line-height:1.55}
.bx-tool em{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-style:normal;font-weight:700;font-size:.86rem;color:var(--tx-brand)}

/* listing headers */
.bx-lhead{padding:40px 0 8px;background:linear-gradient(180deg,var(--tx-surface),var(--tx-bg));border-bottom:1px solid var(--tx-line)}
.bx-lhead .bx-wrap{padding-bottom:26px}
.bx-lhead h1{font-size:clamp(1.8rem,3.6vw,2.6rem);font-weight:800;letter-spacing:-.03em;margin:6px 0 10px}
.bx-lhead h1 small{font-size:.5em;color:var(--tx-muted);font-weight:600}
.bx-lhead p{color:var(--tx-muted);max-width:720px;font-size:1.04rem;line-height:1.65;margin:0 0 8px}
.bx-kicker{display:block;font-size:.74rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--tx-brand)}
.bx-author-h{display:grid;grid-template-columns:auto minmax(0,1fr);gap:28px;align-items:start;margin-top:10px}
.bx-author-h .bx-av{width:112px;height:112px;box-shadow:0 0 0 5px var(--tx-surface),var(--tx-sh)}
.bx-job{color:var(--tx-brand)!important;font-weight:600;margin:0 0 10px!important}
.bx-bio p{color:var(--tx-ink-2);margin:0 0 10px;line-height:1.7}
.bx-links{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.bx-links a{display:inline-flex;align-items:center;height:32px;padding:0 12px;border-radius:999px;border:1px solid var(--tx-line-2);font-size:.84rem;font-weight:600;text-decoration:none!important}
.bx-links a:hover{border-color:var(--tx-brand);color:var(--tx-brand)}

/* breadcrumbs */
.bx-crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;list-style:none;margin:0 0 14px;padding:0;font-size:.84rem;color:var(--tx-muted)}
.bx-crumbs li{display:inline-flex;align-items:center;gap:6px;min-width:0}
.bx-crumbs li+li::before{content:"/";color:var(--tx-faint)}
.bx-crumbs a{color:var(--tx-muted);text-decoration:none}
.bx-crumbs a:hover{color:var(--tx-brand)}
.bx-crumbs [aria-current]{color:var(--tx-ink-2);font-weight:500;max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ================= article ================= */
.bx-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:1000;pointer-events:none}
.bx-progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--tx-brand),#0EA5E9);transition:width .08s linear}
.bx-preview{display:flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;background:var(--tx-warn-50);color:var(--tx-warn);font-weight:600;font-size:.9rem;text-align:center;border-bottom:1px solid var(--tx-line)}
.bx-phead{padding:40px 0 30px;background:linear-gradient(180deg,var(--tx-surface) 0%,var(--tx-bg) 100%)}
.bx-wrap--head{max-width:900px}
.bx-title{font-size:clamp(2rem,4.6vw,3.15rem);line-height:1.12;font-weight:800;letter-spacing:-.035em;margin:14px 0 14px;text-wrap:balance}
.bx-dek{font-size:clamp(1.05rem,1.8vw,1.24rem);line-height:1.6;color:var(--tx-muted);margin:0 0 22px;max-width:760px}
.bx-byline{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.bx-by{display:grid;line-height:1.3;margin-right:10px}
.bx-by a{font-weight:700;text-decoration:none}
.bx-by a:hover{color:var(--tx-brand)}
.bx-by span{font-size:.84rem;color:var(--tx-muted)}
.bx-dates{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:.87rem;color:var(--tx-muted);padding-left:16px;border-left:1px solid var(--tx-line-2)}
.bx-dates span{display:inline-flex;align-items:center;gap:6px}
.bx-cover{max-width:1188px;margin:0 auto 8px;padding:0 24px}
.bx-cover img{display:block;width:100%;height:auto;max-height:620px;object-fit:cover;border-radius:24px;box-shadow:var(--tx-sh);background:var(--tx-surface-2)}
.bx-cover figcaption{margin-top:10px;text-align:center;font-size:.84rem;color:var(--tx-muted)}

.bx-layout{display:grid;grid-template-columns:56px minmax(0,720px) 300px;justify-content:center;gap:40px;padding-top:36px;padding-bottom:40px}
.bx-rail{position:relative}
.bx-share--rail{position:sticky;top:96px;flex-direction:column}
.bx-share{display:flex;gap:8px;flex-wrap:wrap}
.bx-sh{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;border:1px solid var(--tx-line);background:var(--tx-surface);color:var(--tx-ink-2);cursor:pointer;text-decoration:none!important;transition:all .15s}
.bx-sh .bx-i{width:18px;height:18px}
.bx-sh:hover{border-color:var(--tx-brand);color:var(--tx-brand);transform:translateY(-1px)}
.bx-sh--x:hover{color:var(--tx-ink);border-color:var(--tx-ink)}
.bx-sh--linkedin:hover{color:#0A66C2;border-color:#0A66C2}
.bx-sh--facebook:hover{color:#1877F2;border-color:#1877F2}
.bx-sh--whatsapp:hover{color:#16A34A;border-color:#16A34A}
.bx-sh.is-copied{color:var(--tx-ok);border-color:var(--tx-ok)}
.bx-main{min-width:0}
.bx-side{position:relative}
.bx-side-in{position:sticky;top:96px;display:grid;gap:18px}

/* table of contents */
.bx-toc{border:1px solid var(--tx-line);border-radius:var(--tx-r-lg);background:var(--tx-surface)}
.bx-toc--d{padding:18px 16px 14px;max-height:max(220px,calc(100vh - 380px));overflow:auto}
.bx-toc--d>b{display:flex;align-items:center;gap:8px;font-size:.8rem;text-transform:uppercase;letter-spacing:.07em;color:var(--tx-faint);margin:0 4px 10px}
.bx-toc-l{list-style:none;margin:0;padding:0;display:grid;gap:1px}
.bx-toc-l a{display:block;padding:6px 10px;border-radius:8px;border-left:2px solid transparent;font-size:.88rem;line-height:1.4;color:var(--tx-muted);text-decoration:none}
.bx-toc-l a:hover{color:var(--tx-ink);background:var(--tx-surface-2)}
.bx-toc-l a.is-on{color:var(--tx-brand);border-left-color:var(--tx-brand);background:var(--tx-brand-50);font-weight:600}
.bx-toc-3 a{padding-left:24px;font-size:.84rem}
.bx-toc--m{display:none;margin-bottom:24px}
.bx-toc--m summary{display:flex;align-items:center;gap:8px;padding:14px 16px;font-weight:700;cursor:pointer;list-style:none}
.bx-toc--m summary::-webkit-details-marker{display:none}
.bx-toc--m summary::after{content:"+";margin-left:auto;font-weight:700;color:var(--tx-brand)}
.bx-toc--m[open] summary::after{content:"–"}
.bx-toc--m .bx-toc-l{padding:0 8px 12px}

/* article typography */
.bx-content{font-size:1.1rem;line-height:1.8;color:var(--tx-ink-2);overflow-wrap:break-word}
.bx-content>*:first-child{margin-top:0}
.bx-content p{margin:0 0 1.35em}
.bx-content h2,.bx-content h3,.bx-content h4{position:relative;color:var(--tx-ink);letter-spacing:-.02em;scroll-margin-top:90px;text-wrap:balance}
.bx-content h2{font-size:1.72rem;line-height:1.28;font-weight:800;margin:2.1em 0 .7em}
.bx-content h3{font-size:1.32rem;line-height:1.35;font-weight:700;margin:1.8em 0 .6em}
.bx-content h4{font-size:1.1rem;font-weight:700;margin:1.6em 0 .5em}
.bx-anchor{position:absolute;left:-1.1em;top:0;padding-right:.3em;color:var(--tx-faint)!important;text-decoration:none!important;font-weight:600;opacity:0;transition:opacity .15s}
.bx-content h2:hover .bx-anchor,.bx-content h3:hover .bx-anchor,.bx-anchor:focus{opacity:1}
.bx-content a{color:var(--tx-brand);text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:3px;text-decoration-color:color-mix(in srgb,var(--tx-brand) 40%,transparent)}
.bx-content a:hover{text-decoration-color:var(--tx-brand)}
.bx-content strong,.bx-content b{color:var(--tx-ink);font-weight:700}
.bx-content ul,.bx-content ol{margin:0 0 1.35em;padding-left:1.4em}
.bx-content li{margin:.4em 0;padding-left:.2em}
.bx-content ul li::marker{color:var(--tx-brand)}
.bx-content ol li::marker{color:var(--tx-brand);font-weight:700}
.bx-content blockquote{margin:1.8em 0;padding:18px 24px;border-left:4px solid var(--tx-brand);background:var(--tx-brand-50);border-radius:0 16px 16px 0;font-size:1.12rem;color:var(--tx-ink)}
.bx-content blockquote p:last-child{margin:0}
.bx-content hr{border:0;height:1px;background:var(--tx-line-2);margin:2.4em 0}
.bx-content img{display:block;max-width:100%;height:auto;border-radius:16px;margin:1.8em auto}
.bx-content figure{margin:2em 0}
.bx-content figure img{margin:0 auto}
.bx-content figcaption{text-align:center;font-size:.86rem;color:var(--tx-muted);margin-top:10px}
.bx-content .bx-img-full{width:100%}
.bx-content .bx-img-sm{max-width:420px}
.bx-content code{font-family:var(--tx-mono);font-size:.88em;padding:.15em .4em;border-radius:6px;background:var(--tx-surface-2);border:1px solid var(--tx-line);color:var(--tx-ink)}
.bx-content pre{margin:1.6em 0;padding:18px 20px;border-radius:14px;background:#0F1424;color:#E2E8F0;overflow:auto;font-size:.9rem;line-height:1.65;border:1px solid #1E2839}
.bx-content pre code{padding:0;border:0;background:none;color:inherit;font-size:inherit}
.bx-content kbd{font-family:var(--tx-mono);font-size:.82em;padding:2px 6px;border-radius:6px;border:1px solid var(--tx-line-2);border-bottom-width:2px;background:var(--tx-surface)}
.bx-content mark{background:#FEF08A;color:#111;padding:0 .15em;border-radius:3px}
.bx-table{margin:1.8em 0;overflow-x:auto;border:1px solid var(--tx-line);border-radius:14px;background:var(--tx-surface)}
.bx-content table{width:100%;border-collapse:collapse;font-size:.95rem;line-height:1.55}
.bx-content th,.bx-content td{padding:12px 16px;border-bottom:1px solid var(--tx-line);text-align:left;vertical-align:top}
.bx-content th{background:var(--tx-surface-2);color:var(--tx-ink);font-weight:700;font-size:.88rem}
.bx-content tr:last-child td{border-bottom:0}
.bx-content caption{caption-side:bottom;padding:10px;font-size:.85rem;color:var(--tx-muted)}
.bx-embed{position:relative;aspect-ratio:16/9;margin:1.8em 0;border-radius:16px;overflow:hidden;background:#000}
.bx-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.bx-content details{margin:1.2em 0;padding:0 18px;border:1px solid var(--tx-line);border-radius:14px;background:var(--tx-surface)}
.bx-content summary{padding:14px 0;font-weight:700;cursor:pointer;color:var(--tx-ink)}
/* callouts (editor formats) */
.bx-callout{margin:1.8em 0;padding:18px 22px 18px 54px;border-radius:16px;border:1px solid var(--tx-info-50);background:var(--tx-info-50);position:relative;font-size:1.02rem}
.bx-callout::before{content:"i";position:absolute;left:18px;top:18px;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--tx-info);color:#fff;font:700 .85rem/1 var(--tx-font)}
.bx-callout p:last-child{margin:0}
.bx-callout--tip{background:var(--tx-ok-50);border-color:var(--tx-ok-50)}.bx-callout--tip::before{content:"✓";background:var(--tx-ok)}
.bx-callout--warn{background:var(--tx-warn-50);border-color:var(--tx-warn-50)}.bx-callout--warn::before{content:"!";background:var(--tx-warn)}
.bx-callout--key{background:var(--tx-brand-50);border-color:var(--tx-brand-100)}.bx-callout--key::before{content:"★";background:var(--tx-brand)}

/* call to action */
.bx-cta{display:flex;align-items:center;gap:20px;padding:24px 26px;border-radius:20px;background:linear-gradient(135deg,var(--tx-brand-50),color-mix(in srgb,var(--tx-accent) 10%,var(--tx-surface)));border:1px solid var(--tx-brand-100)}
.bx-cta b{display:block;font-size:1.1rem;font-weight:800;letter-spacing:-.01em;color:var(--tx-ink)}
.bx-cta p{margin:6px 0 0;color:var(--tx-muted);font-size:.95rem;line-height:1.55}
.bx-cta .tx-btn{flex:none;text-decoration:none!important;color:#fff!important}
.bx-cta .tx-btn .bx-i{width:16px;height:16px}
.bx-cta--inline{margin:2.2em 0}
.bx-cta--end{margin:40px 0 0}
.bx-cta--side{flex-direction:column;align-items:flex-start;padding:22px}
.bx-cta--side .tx-btn{width:100%}

/* FAQ */
.bx-faq{margin-top:48px}
.bx-faq h2{font-size:1.6rem;font-weight:800;letter-spacing:-.02em;margin:0 0 16px}
.bx-faq details{border:1px solid var(--tx-line);border-radius:var(--tx-r-lg);background:var(--tx-surface);padding:0 20px;margin-bottom:10px}
.bx-faq summary{cursor:pointer;padding:18px 0;font-weight:700;font-size:1.02rem;list-style:none;display:flex;justify-content:space-between;gap:16px}
.bx-faq summary::-webkit-details-marker{display:none}
.bx-faq summary::after{content:"+";font-weight:700;font-size:1.2rem;line-height:1;color:var(--tx-brand)}
.bx-faq details[open] summary::after{content:"–"}
.bx-faq details>div{color:var(--tx-muted);line-height:1.7;padding-bottom:16px}
.bx-faq details>div p{margin:0 0 10px}

/* tags, share, author, prev/next */
.bx-tags{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:36px}
.bx-tags b{font-size:.84rem;color:var(--tx-muted);margin-right:4px}
.bx-tags a{display:inline-flex;align-items:center;height:32px;padding:0 12px;border-radius:999px;background:var(--tx-surface-2);border:1px solid var(--tx-line);font-size:.85rem;font-weight:500;text-decoration:none}
.bx-tags a::before{content:"#";color:var(--tx-faint);margin-right:2px}
.bx-tags a:hover{border-color:var(--tx-brand);color:var(--tx-brand)}
.bx-share-row{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:28px;padding:18px 0;border-top:1px solid var(--tx-line);border-bottom:1px solid var(--tx-line)}
.bx-share-row>b{font-size:.95rem}
.bx-authorbox{display:grid;grid-template-columns:auto minmax(0,1fr);gap:20px;margin-top:32px;padding:26px;border-radius:var(--tx-r-xl);background:var(--tx-surface);border:1px solid var(--tx-line)}
.bx-authorbox h2{font-size:1.25rem;margin:2px 0 2px}
.bx-authorbox h2 a{text-decoration:none}
.bx-authorbox h2 a:hover{color:var(--tx-brand)}
.bx-authorbox p{color:var(--tx-muted);line-height:1.65;margin:0 0 10px}
.bx-more{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:.9rem;color:var(--tx-brand)!important;text-decoration:none}
.bx-pn{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.bx-pn-a{display:grid;gap:6px;padding:18px 20px;border-radius:var(--tx-r-lg);border:1px solid var(--tx-line);background:var(--tx-surface);text-decoration:none!important;transition:border-color .15s}
.bx-pn-a:hover{border-color:var(--tx-brand)}
.bx-pn-a small{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--tx-faint)}
.bx-pn-a b{font-size:.98rem;line-height:1.4}
.bx-pn-a--n{text-align:right}
.bx-pn-a--n small{justify-content:flex-end}
.bx-related{padding:40px 0 56px;background:var(--tx-surface-2);border-top:1px solid var(--tx-line);margin-bottom:48px}
.bx-related .bx-sec-row{margin-top:0}

/* dark mode touches */
html.dark-mode .bx-content pre{background:#070A12}
html.dark-mode .bx-content mark{background:#854D0E;color:#FEF9C3}
html.dark-mode .bx-search{box-shadow:0 18px 40px -18px rgba(0,0,0,.8)}

/* responsive */
@media (max-width:1180px){
  .bx-layout{grid-template-columns:minmax(0,720px) 280px;gap:36px}
  .bx-rail{display:none}
}
@media (max-width:1024px){
  .bx-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bx-tools-g{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bx-feature{grid-template-columns:1fr}
  .bx-feature-img{min-height:0;aspect-ratio:16/9}
  .bx-feature-b{padding:28px}
}
@media (max-width:920px){
  .bx-layout{grid-template-columns:minmax(0,1fr);max-width:760px}
  .bx-side{display:none}
  .bx-toc--m{display:block}
  .bx-news-in{grid-template-columns:1fr;padding:30px 26px}
}
@media (max-width:640px){
  .bx-wrap,.bx-sec{padding-left:16px;padding-right:16px}
  .bx-cover{padding:0}
  .bx-cover img{border-radius:0}
  .bx-grid,.bx-tools-g{grid-template-columns:1fr}
  .bx-hero{padding:44px 0 48px}
  .bx-search{padding-left:12px}
  .bx-search .tx-btn{padding:0 14px}
  .bx-content{font-size:1.04rem}
  .bx-content h2{font-size:1.45rem}
  .bx-content h3{font-size:1.2rem}
  .bx-anchor{display:none}
  .bx-dates{border-left:0;padding-left:0;flex-basis:100%}
  .bx-cta{flex-direction:column;align-items:flex-start}
  .bx-cta .tx-btn{width:100%}
  .bx-pn{grid-template-columns:1fr}
  .bx-pn-a--n{text-align:left}.bx-pn-a--n small{justify-content:flex-start}
  .bx-author-h{grid-template-columns:1fr;gap:16px}
  .bx-authorbox{grid-template-columns:1fr}
  .bx-news{padding:0 16px}
  .bx-popular{padding:22px 18px}
  .bx-crumbs [aria-current]{max-width:22ch}
}
@media (prefers-reduced-motion:reduce){.bx-card,.bx-card-img img,.bx-tool,.bx-sh{transition:none}.bx-card:hover{transform:none}}
@media print{.bx-progress,.bx-rail,.bx-side,.bx-share-row,.bx-news,.bx-related,.bx-cta,.bx-toc{display:none!important}.bx-layout{display:block}.bx-content{font-size:12pt}}