/* ToolStackPro — Modern Responsive Blog CSS
   Palette: #2563EB (primary) · #F97316 (accent) · #1E293B (text)
*/
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#2563EB;--primary-d:#1D4ED8;--accent:#F97316;--accent-d:#EA6C00;
  --bg:#F8FAFC;--surface:#FFFFFF;--surface-2:#F1F5F9;
  --text:#1E293B;--text-2:#475569;--text-3:#94A3B8;--border:#E2E8F0;
  --radius:10px;--radius-lg:16px;
  --shadow-sm:0 1px 3px rgba(0,0,0,.08);--shadow:0 4px 12px rgba(0,0,0,.10);--shadow-lg:0 10px 30px rgba(0,0,0,.12);
  --font-head:'Inter',system-ui,sans-serif;--font-body:'Open Sans',system-ui,sans-serif;
  --max-w:1200px;--content-w:720px;--t:220ms ease;
}
html{scroll-behavior:smooth;background:var(--bg)}
body{font-family:var(--font-body);font-size:1rem;line-height:1.75;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-d)}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4,h5,h6{font-family:var(--font-head);line-height:1.25;font-weight:700;color:var(--text)}
.container{width:100%;max-width:var(--max-w);margin-inline:auto;padding-inline:1.25rem}

/* Ad Zones */
.ad-banner-top,.ad-banner-mid,.ad-banner-bottom,.ad-footer{min-height:90px;width:100%;background:transparent;contain:layout style;overflow:hidden;display:flex;align-items:center;justify-content:center;margin-block:1.5rem}
.ad-in-content{min-height:280px;width:100%;max-width:336px;background:transparent;contain:layout style;overflow:hidden;margin:2rem auto;display:flex;align-items:center;justify-content:center}
.ad-sidebar{min-height:250px;width:300px;background:transparent;contain:layout style;overflow:hidden;margin-bottom:1.5rem;display:flex;align-items:center;justify-content:center}

/* Reading Progress */
#reading-progress{position:fixed;top:0;left:0;height:3px;width:0%;background:linear-gradient(90deg,var(--primary),var(--accent));z-index:9999;transition:width .1s linear}

/* Skip Link */
.skip-link{position:absolute;top:-100px;left:1rem;background:var(--primary);color:#fff;padding:.5rem 1rem;border-radius:var(--radius);font-weight:600;z-index:10000;transition:top .2s}
.skip-link:focus{top:1rem}

/* Affiliate Bar */
.affiliate-bar{background:var(--surface-2);font-size:.75rem;color:var(--text-2);padding:.35rem 0;text-align:center;border-bottom:1px solid var(--border)}
.affiliate-content{display:flex;align-items:center;justify-content:center;gap:.4rem;max-width:var(--max-w);margin-inline:auto;padding-inline:1.25rem}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color var(--t),box-shadow var(--t)}
.site-header.scrolled{border-bottom-color:var(--border);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding-block:.875rem}
.site-logo{font-family:var(--font-head);font-size:1.35rem;font-weight:800;color:var(--text);white-space:nowrap}
.site-logo span{color:var(--primary)}
.site-logo:hover{color:var(--text)}
.site-nav{display:flex;align-items:center;gap:1.75rem}
.site-nav a{font-size:.9rem;font-weight:500;color:var(--text-2);transition:color var(--t)}
.site-nav a:hover{color:var(--primary)}
.btn-nav{background:var(--primary)!important;color:#fff!important;padding:.45rem 1.1rem;border-radius:999px;font-size:.85rem!important;font-weight:600!important;transition:background var(--t)!important}
.btn-nav:hover{background:var(--primary-d)!important}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:.5rem;color:var(--text)}
@media(max-width:768px){
  .menu-toggle{display:flex;align-items:center}
  .site-nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);flex-direction:column;align-items:flex-start;gap:0;padding:1rem 1.25rem;box-shadow:var(--shadow)}
  .site-nav a{padding:.65rem 0;width:100%;border-bottom:1px solid var(--border)}
  .site-nav a:last-child{border-bottom:none}
  body.nav-open .site-nav{display:flex}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.65rem 1.4rem;border-radius:999px;font-family:var(--font-head);font-size:.9rem;font-weight:600;cursor:pointer;transition:all var(--t);border:2px solid transparent;text-decoration:none;white-space:nowrap}
.btn--primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn--primary:hover{background:var(--primary-d);border-color:var(--primary-d);color:#fff}
.btn--accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn--accent:hover{background:var(--accent-d);color:#fff}
.btn--outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn--outline:hover{background:var(--primary);color:#fff}
.btn--ghost{background:transparent;color:var(--text-2);border-color:var(--border)}
.btn--ghost:hover{background:var(--surface-2);color:var(--text)}

/* Hero */
.hero-section{background:linear-gradient(135deg,#EFF6FF 0%,#F0F9FF 100%);padding:4rem 0 3rem;border-bottom:1px solid var(--border)}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.hero-title{font-size:clamp(1.75rem,4vw,2.75rem);font-weight:800;line-height:1.15;margin-bottom:.75rem}
.hero-description{font-size:1.05rem;color:var(--text-2);margin-bottom:1rem;max-width:44ch}
.trust-signals{display:flex;flex-wrap:wrap;gap:.4rem .65rem;margin-bottom:1.5rem}
.trust-item{font-size:.8rem;color:var(--primary);font-weight:600;background:rgba(37,99,235,.08);padding:.2rem .65rem;border-radius:999px}
.hero-ctas{display:flex;gap:.75rem;flex-wrap:wrap}
.hero-featured-link{display:block;background:var(--surface);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);transition:transform var(--t),box-shadow var(--t);color:var(--text)}
.hero-featured-link:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,.14);color:var(--text)}
.hero-featured-image-wrap{position:relative;aspect-ratio:16/9;overflow:hidden}
.hero-featured-image{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.hero-featured-link:hover .hero-featured-image{transform:scale(1.04)}
.hero-featured-body{padding:1.25rem 1.5rem 1.5rem}
.hero-featured-body h2{font-size:1.1rem;margin-bottom:.4rem;line-height:1.3}
.hero-featured-excerpt{font-size:.875rem;color:var(--text-2);margin-bottom:.75rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hero-featured-meta{display:flex;gap:.5rem;font-size:.8rem;color:var(--text-3);align-items:center;flex-wrap:wrap}
.badge{position:absolute;top:.75rem;left:.75rem;font-size:.7rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;padding:.2rem .55rem;border-radius:999px}
.badge--featured{background:var(--accent);color:#fff}
.pill{position:absolute;bottom:.75rem;left:.75rem;background:rgba(0,0,0,.55);backdrop-filter:blur(4px);color:#fff;font-size:.7rem;font-weight:600;padding:.2rem .6rem;border-radius:999px}
.pill--inline,.category-pill{position:static;background:rgba(37,99,235,.1);color:var(--primary);font-size:.75rem;font-weight:600;padding:.2rem .65rem;border-radius:999px;display:inline-block}
@media(max-width:900px){.hero-inner{grid-template-columns:1fr;gap:2rem}.hero-description{max-width:none}}

/* Posts Grid */
.posts-section{padding:3.5rem 0}
.section-heading{font-size:1.5rem;margin-bottom:1.75rem}
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-bottom:2rem}
@media(max-width:900px){.posts-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.posts-grid{grid-template-columns:1fr}}
.post-card{background:var(--surface);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:transform var(--t),box-shadow var(--t);display:flex;flex-direction:column}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.post-card__img-wrap,.post-card-image-link{position:relative;aspect-ratio:16/9;overflow:hidden;display:block}
.post-card__img,.post-card-img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-card__img,.post-card:hover .post-card-img{transform:scale(1.04)}
.post-card__img--placeholder{background:var(--surface-2);display:flex;align-items:center;justify-content:center;font-size:2rem;color:var(--text-3)}
.post-card__body,.post-card-content{padding:1.25rem;display:flex;flex-direction:column;flex:1}
.post-card__title,.post-card-title{font-size:1rem;margin-bottom:.4rem;line-height:1.35}
.post-card__title a,.post-card-title a{color:var(--text)}
.post-card__title a:hover,.post-card-title a:hover{color:var(--primary)}
.post-card__excerpt,.post-card-summary{font-size:.875rem;color:var(--text-2);margin-bottom:.75rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.post-card__meta,.post-card-meta{display:flex;gap:.5rem;align-items:center;font-size:.775rem;color:var(--text-3);margin-bottom:.875rem;flex-wrap:wrap}
.post-date,.reading-time{font-size:.775rem;color:var(--text-3)}
.post-card__cta{font-size:.8rem;font-weight:600;color:var(--primary);align-self:flex-start}
.see-all{text-align:center;margin-top:2rem}

/* List Page */
.list-main{padding:2.5rem 0 4rem}
.list-container{display:grid;grid-template-columns:1fr 300px;gap:2.5rem;align-items:start}
.list-content{min-width:0}
.list-header{margin-bottom:1.5rem}
.list-title{font-size:1.75rem}
.list-title .article-count{font-size:1rem;color:var(--text-3);font-weight:400}
.list-description{color:var(--text-2);margin-top:.5rem}
@media(max-width:900px){.list-container{grid-template-columns:1fr}.sidebar{display:none}}
.breadcrumb{margin-bottom:1.5rem}
.breadcrumb-list{display:flex;flex-wrap:wrap;gap:.3rem;list-style:none;font-size:.85rem;color:var(--text-3);align-items:center}
.breadcrumb-list li:not(:last-child)::after{content:'/';margin-left:.3rem;color:var(--text-3)}
.breadcrumb-list a{color:var(--primary)}

/* Sidebar */
.sidebar{position:sticky;top:5rem}
.sidebar-widget{background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);padding:1.25rem;margin-bottom:1.25rem}
.widget-title{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-3);margin-bottom:1rem}
.recent-posts{list-style:none}
.recent-post-item{padding-block:.6rem;border-bottom:1px solid var(--border)}
.recent-post-item:last-child{border-bottom:none;padding-bottom:0}
.recent-post-link{font-size:.875rem;font-weight:500;color:var(--text);line-height:1.4}
.recent-post-link:hover{color:var(--primary)}
.recent-post-date{display:block;font-size:.75rem;color:var(--text-3);margin-top:.2rem}

/* Single Post */
.content-layout{display:grid;grid-template-columns:1fr 300px;gap:2.5rem;max-width:var(--max-w);margin-inline:auto;padding-inline:1.25rem;padding-top:2.5rem;padding-bottom:4rem;align-items:start}
.content-main{min-width:0}
.toc-sidebar{position:sticky;top:5rem}
@media(max-width:1024px){.content-layout{grid-template-columns:1fr}.toc-sidebar{display:none}}
.toc-sidebar__inner{background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);padding:1.25rem}
.toc-sidebar__title{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-3);margin-bottom:.75rem}
#TableOfContents{font-size:.875rem}
#TableOfContents ul{list-style:none;padding-left:.75rem}
#TableOfContents li{margin-bottom:.4rem}
#TableOfContents a{color:var(--text-2);line-height:1.4}
#TableOfContents a:hover{color:var(--primary)}
article{max-width:var(--content-w)}
.article-header{margin-bottom:2rem}
.article-cats{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:.75rem}
.cat-pill{font-size:.75rem;font-weight:600;background:rgba(37,99,235,.1);color:var(--primary);padding:.2rem .65rem;border-radius:999px}
.article-title{font-size:clamp(1.6rem,3.5vw,2.25rem);line-height:1.2;margin-bottom:.875rem}
.article-meta{display:flex;flex-wrap:wrap;gap:.5rem .75rem;align-items:center;font-size:.85rem;color:var(--text-2);padding-bottom:1rem;border-bottom:1px solid var(--border)}
.fact-badge{background:#D1FAE5;color:#065F46;font-size:.7rem;font-weight:700;padding:.15rem .55rem;border-radius:999px}
.article-hero{border-radius:var(--radius-lg);overflow:hidden;margin-bottom:2rem;aspect-ratio:16/9}
.article-hero img{width:100%;height:100%;object-fit:cover}
.article-body{font-size:1rem;line-height:1.8}
.article-body h2{font-size:1.5rem;margin-top:2.25rem;margin-bottom:.875rem;padding-bottom:.5rem;border-bottom:2px solid var(--border)}
.article-body h3{font-size:1.2rem;margin-top:1.75rem;margin-bottom:.6rem}
.article-body p{margin-bottom:1.25rem}
.article-body ul,.article-body ol{padding-left:1.5rem;margin-bottom:1.25rem}
.article-body li{margin-bottom:.4rem}
.article-body a{color:var(--primary);text-decoration:underline;text-decoration-color:rgba(37,99,235,.3)}
.article-body a:hover{text-decoration-color:var(--primary)}
.article-body img{border-radius:var(--radius);margin-block:1.5rem;box-shadow:var(--shadow)}
.article-body blockquote{border-left:4px solid var(--primary);padding:1rem 1.25rem;background:rgba(37,99,235,.04);border-radius:0 var(--radius) var(--radius) 0;margin-block:1.5rem;font-style:italic;color:var(--text-2)}
.article-body code{background:var(--surface-2);padding:.15em .4em;border-radius:4px;font-size:.9em}
.article-body pre{background:#1E293B;color:#E2E8F0;padding:1.25rem;border-radius:var(--radius);overflow-x:auto;margin-block:1.5rem}
.article-body pre code{background:none;padding:0;font-size:.875rem}
.article-body table{width:100%;border-collapse:collapse;margin-block:1.5rem;font-size:.9rem;display:block;overflow-x:auto}
.article-body th{background:var(--primary);color:#fff;text-align:left;padding:.75rem 1rem}
.article-body td{padding:.65rem 1rem;border-bottom:1px solid var(--border)}
.article-body tr:nth-child(even) td{background:var(--surface-2)}
.author-box{display:flex;gap:1rem;align-items:flex-start;background:var(--surface-2);border-radius:var(--radius-lg);padding:1.25rem;margin-top:2.5rem}
.author-avatar{width:52px;height:52px;border-radius:50%;background:var(--primary);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.25rem;font-weight:800;flex-shrink:0}
.author-name{font-weight:700;margin-bottom:.2rem;font-size:.95rem}
.author-bio{font-size:.85rem;color:var(--text-2);line-height:1.5}
.share-bar{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap;margin-top:1.75rem;padding-top:1.25rem;border-top:1px solid var(--border)}
.share-bar>span{font-size:.85rem;font-weight:600;color:var(--text-2);margin-right:.25rem}
.share-btn{font-size:.8rem;font-weight:600;padding:.35rem .85rem;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text-2);cursor:pointer;transition:all var(--t)}
.share-btn:hover{border-color:var(--primary);color:var(--primary)}
.related-section{margin-top:3rem;padding-top:2rem;border-top:2px solid var(--border)}
.related-section h2{font-size:1.3rem;margin-bottom:1.25rem}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
@media(max-width:720px){.related-grid{grid-template-columns:1fr}}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--border)}
.post-nav a{display:block;padding:.875rem 1rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);font-size:.85rem;color:var(--text-2);transition:all var(--t)}
.post-nav a:hover{border-color:var(--primary);color:var(--primary)}
.post-nav__label{font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-3);margin-bottom:.25rem}
.post-nav__title{font-weight:600;color:var(--text);line-height:1.3;font-size:.9rem}
.post-nav .next{text-align:right}

/* Newsletter */
.newsletter-section,.newsletter{background:linear-gradient(135deg,var(--primary) 0%,#1D4ED8 100%);color:#fff;padding:3.5rem 0}
.newsletter-content,.newsletter__inner{text-align:center;max-width:520px;margin-inline:auto}
.newsletter-title,.newsletter__title{font-size:1.75rem;color:#fff;margin-bottom:.5rem}
.newsletter-subtitle,.newsletter__subtitle{color:rgba(255,255,255,.8);margin-bottom:1.5rem}
.newsletter-form,.newsletter__form{display:flex;gap:.5rem;max-width:420px;margin-inline:auto}
.newsletter-form input,.newsletter__input{flex:1;padding:.7rem 1rem;border-radius:999px;border:none;font-size:.95rem;outline:none}
.newsletter-form input:focus,.newsletter__input:focus{outline:2px solid var(--accent)}
.newsletter-form button,.newsletter__btn{background:var(--accent);border-radius:999px;border:none;color:#fff;padding:.7rem 1.25rem;font-weight:700;cursor:pointer;white-space:nowrap;transition:background var(--t);font-family:var(--font-head)}
.newsletter-form button:hover,.newsletter__btn:hover{background:var(--accent-d)}
.newsletter-privacy,.newsletter__privacy{font-size:.75rem;color:rgba(255,255,255,.6);margin-top:.75rem}
@media(max-width:480px){.newsletter-form,.newsletter__form{flex-direction:column}.newsletter-form input,.newsletter__input,.newsletter-form button,.newsletter__btn{border-radius:var(--radius)}}

/* Footer */
.site-footer{background:#0F172A;color:#94A3B8;padding:3.5rem 0 2rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2.5rem;margin-bottom:2.5rem}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.footer-grid{grid-template-columns:1fr}}
.footer-logo{font-family:var(--font-head);font-size:1.25rem;font-weight:800;color:#fff;margin-bottom:.75rem}
.footer-logo span{color:var(--accent)}
.footer-brand p{font-size:.875rem;line-height:1.6;max-width:34ch}
.footer-col h4{font-family:var(--font-head);color:#fff;font-size:.8rem;font-weight:700;margin-bottom:1rem;text-transform:uppercase;letter-spacing:.06em}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:.5rem}
.footer-col a{font-size:.875rem;color:#94A3B8;transition:color var(--t)}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:1.5rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.75rem;font-size:.8rem}
.footer-bottom a{color:#64748B}
.footer-bottom a:hover{color:#fff}

/* Pagination */
.pagination{padding:2rem 0}
.pagination__list{display:flex;align-items:center;justify-content:center;gap:.5rem;list-style:none}
.pagination__link{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;border-radius:var(--radius);font-size:.875rem;font-weight:600;color:var(--primary);border:1px solid var(--border);background:var(--surface);transition:all var(--t);text-decoration:none}
.pagination__link:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.pagination__link--disabled{color:var(--text-3);cursor:not-allowed;background:var(--surface-2)}
.pagination__link--disabled:hover{background:var(--surface-2);color:var(--text-3);border-color:var(--border)}
.pagination__status{font-size:.85rem;color:var(--text-2);padding:.5rem .75rem}

/* Back to Top */
.back-to-top{position:fixed;bottom:2rem;right:1.5rem;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);opacity:0;transform:translateY(10px);transition:opacity .3s,transform .3s;z-index:50}
.back-to-top.visible{opacity:1;transform:translateY(0)}
.back-to-top:hover{background:var(--primary-d)}

/* Misc */
.no-posts{text-align:center;padding:4rem 1rem;color:var(--text-2)}
.callout{padding:1rem 1.25rem;border-radius:var(--radius);margin-block:1.5rem;border-left:4px solid}
.callout.tip{background:#F0FDF4;border-color:#22C55E;color:#166534}
.callout.warning{background:#FFFBEB;border-color:#F59E0B;color:#92400E}
.callout.note{background:#EFF6FF;border-color:var(--primary);color:#1E40AF}
.callout.danger{background:#FFF1F2;border-color:#F43F5E;color:#9F1239}
.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-block:1.5rem}
@media(max-width:560px){.pros-cons{grid-template-columns:1fr}}
.pros{background:#F0FDF4;border-radius:var(--radius);padding:1rem}
.cons{background:#FFF1F2;border-radius:var(--radius);padding:1rem}
.pros h4{color:#166534;margin-bottom:.5rem}
.cons h4{color:#9F1239;margin-bottom:.5rem}
.pros ul,.cons ul{padding-left:1.25rem;font-size:.9rem}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}
:focus-visible{outline:3px solid var(--primary);outline-offset:3px}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}