/* =========================================================
   VB DYNAMICS — ARTICLE STYLESHEET
   Shared by every /blog/<slug>/index.html page.
   Mirrors the tokens and components used on index.html.
   ========================================================= */
:root{
  --blue:#006CA9;
  --blue-dark:#00588A;
  --purple:#2D1676;
  --grad:linear-gradient(115deg,#006CA9,#2D1676);
  --wa:#25D366;

  --ink:#0B0E14;
  --ink-2:#161B26;
  --ink-soft:#4B5563;
  --ink-faint:#8A93A3;
  --paper:#FFFFFF;
  --canvas:#F5F6F8;
  --line:#DBDFE6;
  --line-dark:rgba(255,255,255,.14);

  --display:'Bricolage Grotesque', sans-serif;
  --text:'Inter', sans-serif;
  --ease:cubic-bezier(.4,0,.2,1);

  --r-sm:2px;
  --edge:clamp(20px,5vw,64px);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--text);background:var(--paper);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;height:auto;}
a{text-decoration:none;color:inherit;}
ul,ol{list-style:none;}
button{font-family:inherit;}
.wrap{max-width:1320px;margin:0 auto;padding:0 var(--edge);}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--blue);outline-offset:3px;}
.skip-link{position:absolute;left:-9999px;top:0;z-index:2000;background:var(--blue);color:#fff;padding:12px 20px;font-weight:600;}
.skip-link:focus{left:0;}

h1,h2,h3,h4{font-family:var(--display);font-weight:700;line-height:1.05;letter-spacing:-0.02em;color:var(--ink);}
p{color:var(--ink-soft);}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto;} *{animation-duration:.001ms !important;transition-duration:.001ms !important;} }

.btn{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:.95rem;padding:15px 26px;border-radius:var(--r-sm);border:1.5px solid transparent;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);cursor:pointer;white-space:nowrap;}
.btn-wa{background:var(--wa);color:#fff;}
.btn-wa:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(37,211,102,.32);}
.btn-dark{background:var(--ink);color:#fff;}
.btn-dark:hover{background:var(--purple);transform:translateY(-2px);}
.btn-line{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-line:hover{background:var(--ink);color:#fff;}
.btn-line.on-dark{border-color:rgba(255,255,255,.4);color:#fff;background:transparent;}
.btn-line.on-dark:hover{background:#fff;color:var(--ink);}
.text-link{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:.95rem;border-bottom:1.5px solid currentColor;padding-bottom:2px;}
.text-link i{font-size:.75rem;transition:transform .2s var(--ease);}
.text-link:hover i{transform:translateX(4px);}

/* =============== HEADER =============== */
.hdr{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(245,246,248,0);border-bottom:1px solid transparent;transition:background .3s var(--ease),border-color .3s var(--ease);}
.hdr.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom-color:var(--line);}
.hdr-inner{display:flex;align-items:center;justify-content:space-between;padding:22px var(--edge);max-width:1320px;margin:0 auto;}
.logo{display:flex;align-items:center;gap:11px;}
.logo-img{width:34px;height:34px;}
.logo-name{font-weight:700;font-size:.98rem;font-family:var(--display);color:#fff;transition:color .3s var(--ease);}
.logo-sub{font-size:.68rem;color:rgba(255,255,255,.65);transition:color .3s var(--ease);}
.nav{display:flex;gap:32px;}
.nav a{font-size:.88rem;font-weight:500;color:rgba(255,255,255,.85);transition:color .3s var(--ease);}
.nav a:hover,.nav a[aria-current="page"]{color:#fff;}
.hdr-cta{display:flex;align-items:center;gap:20px;}
.hdr-wa{font-size:.88rem;font-weight:600;display:inline-flex;align-items:center;gap:8px;color:#fff;transition:color .3s var(--ease);}
.hdr-wa i{color:var(--wa);}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;}
.burger span{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:background .3s var(--ease);}
.hdr.scrolled .logo-name{color:var(--ink);}
.hdr.scrolled .logo-sub{color:var(--ink-faint);}
.hdr.scrolled .nav a{color:var(--ink-soft);}
.hdr.scrolled .nav a:hover,.hdr.scrolled .nav a[aria-current="page"]{color:var(--ink);}
.hdr.scrolled .hdr-wa{color:var(--ink);}
.hdr.scrolled .burger span{background:var(--ink);}

.mob{position:fixed;inset:0;z-index:999;background:var(--ink);display:flex;flex-direction:column;align-items:flex-start;justify-content:center;padding:0 var(--edge);transform:translateY(-100%);transition:transform .4s var(--ease);}
.mob.open{transform:translateY(0);}
.mob-nav{width:100%;}
.mob-nav li{border-bottom:1px solid var(--line-dark);}
.mob-nav a{display:block;font-size:1.6rem;font-weight:600;padding:16px 0;font-family:var(--display);color:#fff;}
.mob .btn{margin-top:28px;}

/* =============== READING PROGRESS =============== */
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--grad);z-index:1100;transition:width .1s linear;}

/* =============== ARTICLE MASTHEAD =============== */
.masthead{background:var(--ink);color:#fff;padding:150px 0 58px;position:relative;}
.masthead::after{content:'';position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--grad);}
.crumbs{display:flex;align-items:center;gap:10px;font-size:.82rem;color:rgba(255,255,255,.55);margin-bottom:24px;flex-wrap:wrap;}
.crumbs a:hover{color:#fff;}
.crumbs i{font-size:.6rem;}
.art-cat{font-size:.8rem;font-weight:700;color:#7fd0ff;display:block;margin-bottom:16px;}
.masthead h1{font-size:clamp(2rem,4.2vw,3.3rem);color:#fff;max-width:22ch;}
.masthead .lede{margin-top:20px;font-size:1.05rem;line-height:1.7;max-width:62ch;color:rgba(255,255,255,.78);}
.byline{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:30px;padding-top:22px;border-top:1px solid rgba(255,255,255,.18);font-size:.88rem;font-weight:600;color:rgba(255,255,255,.9);}
.byline .dot{color:rgba(255,255,255,.35);font-weight:400;}
.byline .avatar{width:34px;height:34px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-family:var(--display);font-weight:700;font-size:.8rem;color:#fff;margin-right:2px;}

/* =============== ARTICLE LAYOUT =============== */
.article{background:var(--paper);padding:clamp(48px,6vw,84px) 0 clamp(56px,7vw,96px);}
.article-inner{display:grid;grid-template-columns:250px 1fr;gap:64px;align-items:start;}
.toc{position:sticky;top:104px;border-top:1px solid var(--line);}
.toc h2{font-size:.82rem;font-weight:700;color:var(--blue);padding:18px 0 12px;}
.toc ol{counter-reset:toc;}
.toc li{counter-increment:toc;border-bottom:1px solid var(--line);}
.toc a{display:flex;gap:12px;padding:11px 0;font-size:.88rem;color:var(--ink-soft);transition:color .2s var(--ease);}
.toc a::before{content:counter(toc,decimal-leading-zero);font-family:var(--display);font-weight:800;color:var(--ink-faint);font-size:.78rem;}
.toc a:hover,.toc a.active{color:var(--ink);}
.toc a.active::before{color:var(--blue);}
.toc-share{padding:18px 0 0;display:flex;gap:10px;}
.toc-share button,.toc-share a{width:38px;height:38px;border:1.5px solid var(--line);background:none;display:flex;align-items:center;justify-content:center;color:var(--ink-soft);cursor:pointer;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);}
.toc-share button:hover,.toc-share a:hover{background:var(--ink);border-color:var(--ink);color:#fff;}

.prose{max-width:70ch;}
.prose > section{padding-bottom:36px;margin-bottom:36px;border-bottom:1px solid var(--line);scroll-margin-top:104px;}
.prose > section:last-of-type{border-bottom:none;margin-bottom:0;}
.prose h2{font-size:1.55rem;margin-bottom:16px;}
.prose h3{font-size:1.08rem;margin:26px 0 10px;}
.prose p{font-size:1rem;line-height:1.78;margin-bottom:16px;}
.prose ul.bullets{margin:4px 0 20px;}
.prose ul.bullets li{position:relative;padding-left:26px;font-size:.98rem;line-height:1.72;color:var(--ink-soft);margin-bottom:10px;}
.prose ul.bullets li::before{content:'';position:absolute;left:4px;top:11px;width:7px;height:7px;background:var(--blue);}
.prose ol.steps{counter-reset:step;margin:4px 0 20px;}
.prose ol.steps li{counter-increment:step;position:relative;padding-left:44px;font-size:.98rem;line-height:1.72;color:var(--ink-soft);margin-bottom:16px;}
.prose ol.steps li::before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:0;font-family:var(--display);font-weight:800;font-size:.95rem;color:var(--blue);}
.prose ol.steps strong{display:block;color:var(--ink);font-family:var(--display);font-weight:700;font-size:1.02rem;margin-bottom:4px;letter-spacing:-0.01em;}
.prose a:not(.btn):not(.text-link){color:var(--blue);border-bottom:1px solid rgba(0,108,169,.35);}
.prose a:not(.btn):not(.text-link):hover{border-bottom-color:var(--blue);}
.prose strong{color:var(--ink);font-weight:600;}

.callout{background:var(--canvas);border:1px solid var(--line);border-left:3px solid var(--blue);padding:22px 24px;margin:8px 0 22px;}
.callout p{margin-bottom:0;font-size:.95rem;}
.callout p + p{margin-top:10px;}
.callout.wa{border-left-color:var(--wa);}

.takeaway{background:var(--ink);color:#fff;padding:30px 32px;margin-bottom:40px;}
.takeaway h2{color:#fff;font-size:1.05rem;margin-bottom:14px;}
.takeaway ul{display:flex;flex-direction:column;gap:11px;}
.takeaway li{font-size:.94rem;color:rgba(255,255,255,.82);display:flex;align-items:flex-start;gap:11px;line-height:1.6;}
.takeaway li i{color:var(--wa);font-size:.75rem;margin-top:7px;flex-shrink:0;}

.datatable{width:100%;border-collapse:collapse;margin:8px 0 22px;font-size:.92rem;}
.datatable th,.datatable td{text-align:left;padding:13px 14px;border:1px solid var(--line);vertical-align:top;color:var(--ink-soft);}
.datatable th{background:var(--canvas);color:var(--ink);font-family:var(--display);font-weight:700;font-size:.86rem;}
.datatable td strong{color:var(--ink);}
.table-scroll{overflow-x:auto;}

.inline-cta{border:1px solid var(--line);padding:26px 28px;margin:8px 0 22px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.inline-cta h3{font-size:1.05rem;margin:0 0 4px;}
.inline-cta p{font-size:.92rem;margin:0;max-width:46ch;}

@media(max-width:980px){
  .article-inner{grid-template-columns:1fr;gap:34px;}
  .toc{position:static;}
}

/* =============== RELATED =============== */
.related{background:var(--canvas);padding:clamp(56px,7vw,88px) 0;}
.related-head{margin-bottom:40px;}
.related-head .tag{font-size:.82rem;font-weight:600;color:var(--blue);margin-bottom:14px;display:block;}
.related-head h2{font-size:clamp(1.6rem,3vw,2.2rem);max-width:18ch;}
.post-list{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;background:var(--line);border:1px solid var(--line);}
.post-card{display:flex;flex-direction:column;align-items:flex-start;gap:14px;padding:32px;background:var(--paper);transition:background .2s var(--ease);}
.post-card:hover{background:#fff;}
.post-icon{width:48px;height:48px;border-radius:var(--r-sm);background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.1rem;transition:background .25s var(--ease),transform .25s var(--ease);}
.post-card:hover .post-icon{background:var(--blue);transform:translateY(-2px);}
.post-cat{font-size:.78rem;font-weight:700;color:var(--blue);}
.post-card h3{font-size:1.12rem;max-width:26ch;}
.post-card p{font-size:.9rem;max-width:44ch;}
.post-meta{font-size:.78rem;color:var(--ink-faint);}
.post-card .svc-arrow{width:38px;height:38px;border:1.5px solid var(--line);display:flex;align-items:center;justify-content:center;transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);margin-top:auto;}
.post-card:hover .svc-arrow{background:var(--ink);border-color:var(--ink);color:#fff;transform:translateX(4px);}
@media(max-width:900px){ .post-list{grid-template-columns:1fr;} }

/* =============== FINAL CTA =============== */
.final{background:var(--ink);color:#fff;position:relative;overflow:hidden;padding:clamp(64px,8vw,104px) 0;}
.final::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);}
.final-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:end;}
.final h2{color:#fff;font-size:clamp(2rem,4.2vw,3.2rem);max-width:16ch;}
.final-right{display:flex;flex-direction:column;gap:22px;align-items:flex-start;}
.final-right p{color:rgba(255,255,255,.65);max-width:38ch;}
.final-note{font-size:.86rem;color:rgba(255,255,255,.5)!important;margin-top:-8px;}
.final-cta-row{display:flex;gap:14px;flex-wrap:wrap;}
@media(max-width:820px){ .final-inner{grid-template-columns:1fr;} }

/* =============== FOOTER =============== */
.footer{background:var(--ink);color:rgba(255,255,255,.55);padding:56px 0 28px;border-top:1px solid var(--line-dark);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid var(--line-dark);}
.footer-grid h4{color:#fff;margin-bottom:14px;font-size:.8rem;font-weight:700;font-family:var(--display);}
.footer-links{display:flex;flex-direction:column;gap:9px;font-size:.88rem;}
.footer-links a:hover{color:#fff;}
.footer-bottom{padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.8rem;color:rgba(255,255,255,.4);}
@media(max-width:820px){ .footer-grid{grid-template-columns:1fr;gap:26px;} }

.wa-float{position:fixed;bottom:24px;right:24px;z-index:900;width:56px;height:56px;background:var(--wa);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.6rem;box-shadow:0 6px 22px rgba(37,211,102,.4);}
@media(max-width:900px){ .nav,.hdr-cta{display:none;} .burger{display:flex;} }