/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;color:#1a1a2e;background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:#2563eb;text-decoration:none}
a:hover{color:#1d4ed8;text-decoration:underline}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
input,select,button,textarea{font:inherit;color:inherit}

/* ===== LAYOUT ===== */
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

/* ===== COLORS ===== */
:root{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --primary-light:#dbeafe;
  --accent:#059669;
  --accent-light:#d1fae5;
  --bg:#ffffff;
  --bg-alt:#f8fafc;
  --bg-card:#ffffff;
  --border:#e2e8f0;
  --text:#1a1a2e;
  --text-muted:#64748b;
  --text-light:#94a3b8;
  --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.06);
  --shadow-md:0 4px 6px rgba(0,0,0,.07),0 2px 4px rgba(0,0,0,.06);
  --shadow-lg:0 10px 15px rgba(0,0,0,.1),0 4px 6px rgba(0,0,0,.05);
  --radius:8px;
  --radius-lg:12px;
}

/* ===== HEADER ===== */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:64px}
.site-logo{font-size:1.25rem;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px}
.site-logo span{color:var(--primary)}
.site-nav{display:flex;gap:28px;align-items:center}
.site-nav a{color:var(--text-muted);font-size:.9rem;font-weight:500;transition:color .15s}
.site-nav a:hover{color:var(--primary);text-decoration:none}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:4px}
.nav-toggle svg{width:24px;height:24px;stroke:var(--text)}
@media(max-width:768px){
  .site-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;gap:12px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-md)}
  .site-nav.open{display:flex}
  .nav-toggle{display:block}
}

/* ===== HERO ===== */
.hero{background:linear-gradient(135deg,#0f172a 0%,#1e3a5f 40%,#2563eb 100%);color:#fff;padding:96px 0 72px;text-align:center;position:relative;overflow:hidden}
.hero-glow{position:absolute;top:-40%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(59,130,246,.25) 0%,transparent 70%);pointer-events:none}
.hero-inner{position:relative;z-index:1}
.hero h1{font-size:3rem;font-weight:800;margin-bottom:16px;letter-spacing:-.025em;line-height:1.15}
.hero-sub{font-size:1.15rem;opacity:.85;max-width:640px;margin:0 auto 40px;line-height:1.7}
.hero-pills{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:28px}
.hero-pills a{display:inline-block;padding:8px 18px;border-radius:50px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:.88rem;font-weight:500;transition:all .2s}
.hero-pills a:hover{background:rgba(255,255,255,.22);border-color:rgba(255,255,255,.4);text-decoration:none}
@media(max-width:600px){.hero{padding:64px 0 56px}.hero h1{font-size:2.1rem}.hero-pills a{font-size:.8rem;padding:7px 14px}}

/* ===== SEARCH ===== */
.search-wrap{max-width:580px;margin:0 auto;position:relative}
.search-wrap input{width:100%;padding:16px 20px 16px 52px;font-size:1.05rem;border:2px solid rgba(255,255,255,.25);border-radius:50px;background:rgba(255,255,255,.12);color:#fff;outline:none;transition:all .2s}
.search-wrap input::placeholder{color:rgba(255,255,255,.6)}
.search-wrap input:focus{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.5)}
.search-wrap .search-icon{position:absolute;left:20px;top:50%;transform:translateY(-50%);width:20px;height:20px;opacity:.6}
.search-results{position:absolute;top:calc(100% + 8px);left:0;right:0;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);max-height:400px;overflow-y:auto;display:none;z-index:50;text-align:left}
.search-results.active{display:block}
.search-results a{display:flex;align-items:center;gap:12px;padding:12px 20px;color:var(--text);border-bottom:1px solid var(--border);transition:background .1s}
.search-results a:last-child{border-bottom:none}
.search-results a:hover{background:var(--bg-alt);text-decoration:none}
.search-results .sr-name{font-weight:600;font-size:.95rem}
.search-results .sr-cat{font-size:.8rem;color:var(--text-muted)}
.search-results .sr-empty{padding:20px;text-align:center;color:var(--text-muted);font-size:.95rem}

/* page-level search (non-hero) */
.page-search{max-width:580px;margin:0 auto 40px;position:relative}
.page-search input{width:100%;padding:14px 18px 14px 48px;font-size:1rem;border:2px solid var(--border);border-radius:50px;background:var(--bg);color:var(--text);outline:none;transition:all .2s}
.page-search input:focus{border-color:var(--primary)}
.page-search .search-icon{position:absolute;left:18px;top:50%;transform:translateY(-50%);width:18px;height:18px;opacity:.4}

/* ===== STATS BAR ===== */
.stats-bar{background:#fff;border-bottom:1px solid var(--border);padding:20px 0}
.stats-row{display:flex;justify-content:center;gap:48px;flex-wrap:wrap}
.stat-item{display:flex;align-items:center;gap:10px;font-size:.95rem;color:var(--text-muted)}
.stat-item svg{color:var(--primary);flex-shrink:0}
.stat-item strong{color:var(--text);font-weight:700}
@media(max-width:600px){.stats-row{gap:20px 32px}.stat-item{font-size:.85rem}}

/* ===== CATEGORIES ===== */
.categories{padding:72px 0}
.section-title{font-size:1.6rem;font-weight:700;margin-bottom:8px;letter-spacing:-.01em}
.section-subtitle{color:var(--text-muted);margin-bottom:36px;font-size:1.05rem}
.cat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px;transition:all .2s;cursor:pointer;display:block;color:var(--text)}
.cat-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-2px);text-decoration:none;color:var(--text)}
.cat-icon{width:48px;height:48px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:16px}
.cat-card h3{font-size:1.1rem;font-weight:700;margin-bottom:6px}
.cat-card p{font-size:.88rem;color:var(--text-muted);line-height:1.5}
.cat-card .cat-count{font-size:.8rem;color:var(--primary);font-weight:600;margin-top:10px}

/* category colors */
.cat-loans .cat-icon{background:#dbeafe;color:#2563eb}
.cat-invest .cat-icon{background:#d1fae5;color:#059669}
.cat-tax .cat-icon{background:#fef3c7;color:#d97706}
.cat-retirement .cat-icon{background:#ede9fe;color:#7c3aed}
.cat-savings .cat-icon{background:#cffafe;color:#0891b2}
.cat-real-estate .cat-icon{background:#fce7f3;color:#db2777}
.cat-business .cat-icon{background:#f1f5f9;color:#475569}
.cat-debt .cat-icon{background:#fee2e2;color:#dc2626}
.cat-salary .cat-icon{background:#e0f2fe;color:#0284c7}
.cat-insurance .cat-icon{background:#fef9c3;color:#a16207}

/* ===== FEATURED SECTION ===== */
.featured{padding:0 0 72px;background:var(--bg)}
.featured-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:768px){.featured-grid{grid-template-columns:1fr}}
.featured-card{display:block;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 28px 24px;transition:all .25s;color:var(--text);position:relative}
.featured-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-3px);text-decoration:none;color:var(--text)}
.featured-tag{display:inline-block;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--primary);background:var(--primary-light);padding:4px 10px;border-radius:50px;margin-bottom:12px}
.featured-card h3{font-size:1.15rem;font-weight:700;margin-bottom:8px}
.featured-card p{font-size:.9rem;color:var(--text-muted);line-height:1.65;margin-bottom:12px}
.featured-link{font-size:.88rem;font-weight:600;color:var(--primary)}
.featured-card:hover .featured-link{text-decoration:underline}

/* ===== VALUE PROPS ===== */
.value-props{padding:72px 0;background:var(--bg-alt);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.vp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;text-align:center}
@media(max-width:768px){.vp-grid{grid-template-columns:1fr;gap:32px}}
.vp-icon{width:64px;height:64px;border-radius:16px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;color:var(--primary)}
.vp-item h3{font-size:1.15rem;font-weight:700;margin-bottom:8px}
.vp-item p{font-size:.92rem;color:var(--text-muted);line-height:1.65;max-width:360px;margin:0 auto}

/* ===== SEO CONTENT ===== */
.seo-content{padding:72px 0;background:var(--bg)}
.seo-content-inner{max-width:780px;margin:0 auto}
.seo-content h2{font-size:1.6rem;font-weight:700;margin-bottom:20px;letter-spacing:-.01em}
.seo-content p{font-size:.98rem;color:#374151;line-height:1.8;margin-bottom:16px}
.seo-content a{color:var(--primary);font-weight:500}
.seo-content a:hover{text-decoration:underline}

/* ===== HOME FAQ ===== */
.home-faq{padding:72px 0;background:var(--bg-alt)}
.faq-narrow{max-width:780px;margin:0 auto}

/* ===== ALL CALCS ===== */
.all-calcs{padding:72px 0;background:var(--bg)}

/* ===== FOOTER CATS ROW ===== */
.footer-cats{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 16px;padding:24px 0;margin-bottom:24px;border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08)}
.footer-cats a{font-size:.82rem;color:#94a3b8;transition:color .15s}
.footer-cats a:hover{color:#fff;text-decoration:none}

/* ===== POPULAR SECTION (legacy, keep for calc cards) ===== */
.popular{padding:0 0 72px;background:var(--bg)}
.calc-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:all .2s;display:block;color:var(--text)}
.calc-card:hover{border-color:var(--primary);box-shadow:var(--shadow);text-decoration:none;color:var(--text)}
.calc-card h3{font-size:1rem;font-weight:600;margin-bottom:4px}
.calc-card p{font-size:.84rem;color:var(--text-muted);line-height:1.45}
.calc-card .calc-volume{font-size:.75rem;color:var(--text-light);margin-top:8px}

/* ===== CALCULATOR PAGE LAYOUT ===== */
.calc-page{padding:48px 0 72px}
.calc-layout{display:grid;grid-template-columns:1fr 340px;gap:40px;align-items:start}
@media(max-width:900px){.calc-layout{grid-template-columns:1fr}}

/* Breadcrumb */
.breadcrumb{padding:16px 0;font-size:.85rem;color:var(--text-muted)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{margin:0 6px;opacity:.5}

/* Calculator widget */
.calc-widget{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow)}
.calc-widget h1{font-size:1.75rem;font-weight:700;margin-bottom:8px;letter-spacing:-.01em}
.calc-widget .calc-desc{color:var(--text-muted);margin-bottom:28px;font-size:.95rem}
.calc-form{display:flex;flex-direction:column;gap:20px}

/* Form fields */
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:.88rem;font-weight:600;color:var(--text)}
.field .input-wrap{position:relative;display:flex;align-items:center}
.field input,.field select{width:100%;padding:12px 14px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:1rem;outline:none;transition:border-color .15s}
.field input:focus,.field select:focus{border-color:var(--primary)}
.field .prefix{position:absolute;left:14px;color:var(--text-muted);font-weight:600;pointer-events:none}
.field .suffix{position:absolute;right:14px;color:var(--text-muted);font-size:.85rem;pointer-events:none}
.field.has-prefix input{padding-left:30px}
.field.has-suffix input{padding-right:44px}
.field .help-text{font-size:.78rem;color:var(--text-light)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:500px){.field-row{grid-template-columns:1fr}}

/* Calculate button */
.btn-calculate{padding:14px 24px;background:var(--primary);color:#fff;font-weight:600;font-size:1rem;border:none;border-radius:var(--radius);cursor:pointer;transition:background .15s;width:100%}
.btn-calculate:hover{background:var(--primary-dark)}

/* Results */
.calc-results{margin-top:28px;padding-top:28px;border-top:2px solid var(--border);display:none}
.calc-results.visible{display:block}
.result-primary{text-align:center;margin-bottom:24px}
.result-primary .label{font-size:.88rem;color:var(--text-muted);margin-bottom:4px}
.result-primary .value{font-size:2.5rem;font-weight:800;color:var(--primary);letter-spacing:-.02em}
.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.result-item{background:var(--bg-alt);border-radius:var(--radius);padding:14px 16px}
.result-item .label{font-size:.78rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:2px}
.result-item .value{font-size:1.15rem;font-weight:700;color:var(--text)}

/* Sidebar */
.calc-sidebar{display:flex;flex-direction:column;gap:24px}
.sidebar-box{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px}
.sidebar-box h3{font-size:1rem;font-weight:700;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.related-list{display:flex;flex-direction:column;gap:10px}
.related-list a{display:block;padding:10px 12px;border-radius:var(--radius);font-size:.9rem;font-weight:500;color:var(--text);transition:all .1s;border:1px solid transparent}
.related-list a:hover{background:var(--primary-light);border-color:var(--primary);text-decoration:none;color:var(--primary-dark)}

/* ===== ON-PAGE CONTENT ===== */
.calc-content{margin-top:56px}
.calc-content h2{font-size:1.4rem;font-weight:700;margin:36px 0 12px;color:var(--text)}
.calc-content h3{font-size:1.15rem;font-weight:600;margin:28px 0 10px;color:var(--text)}
.calc-content p{margin-bottom:16px;color:#374151;line-height:1.75;font-size:.98rem}
.calc-content ul,.calc-content ol{margin:0 0 16px 24px;color:#374151}
.calc-content li{margin-bottom:8px;line-height:1.65;font-size:.95rem}
.calc-content ol{list-style:decimal}
.calc-content ul{list-style:disc}
.calc-content a{color:var(--primary);font-weight:500}
.calc-content blockquote{border-left:3px solid var(--primary);padding:12px 20px;margin:20px 0;background:var(--primary-light);border-radius:0 var(--radius) var(--radius) 0;font-size:.95rem}
.calc-content table{width:100%;border-collapse:collapse;margin:20px 0;font-size:.9rem}
.calc-content th{background:var(--bg-alt);padding:10px 14px;text-align:left;font-weight:600;border-bottom:2px solid var(--border)}
.calc-content td{padding:10px 14px;border-bottom:1px solid var(--border)}
.calc-content .formula-box{background:#1e293b;color:#e2e8f0;padding:20px 24px;border-radius:var(--radius);font-family:"SF Mono",Monaco,Consolas,monospace;font-size:.9rem;margin:20px 0;overflow-x:auto}

/* FAQ accordion */
.faq-list{margin-top:16px}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:10px;overflow:hidden}
.faq-q{padding:16px 20px;font-weight:600;font-size:.95rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;background:var(--bg-alt);transition:background .15s}
.faq-q:hover{background:var(--border)}
.faq-q::after{content:"+";font-size:1.2rem;font-weight:400;color:var(--text-muted);transition:transform .2s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:600px}
.faq-a-inner{padding:16px 20px;font-size:.92rem;line-height:1.7;color:#374151}

/* ===== FOOTER ===== */
.site-footer{background:#1e293b;color:#94a3b8;padding:56px 0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:24px}}
@media(max-width:500px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{font-size:1.1rem;font-weight:700;color:#fff;margin-bottom:12px}
.footer-brand span{color:var(--primary)}
.site-footer p{font-size:.88rem;line-height:1.6}
.site-footer h4{color:#e2e8f0;font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:16px}
.site-footer ul li{margin-bottom:10px}
.site-footer ul a{color:#94a3b8;font-size:.88rem;transition:color .15s}
.site-footer ul a:hover{color:#fff;text-decoration:none}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;text-align:center;font-size:.82rem;color:#64748b}

/* ===== CATEGORY PAGE ===== */
.cat-page{padding:48px 0 72px}
.cat-page h1{font-size:2rem;font-weight:700;margin-bottom:8px}
.cat-page .section-subtitle{margin-bottom:32px}
.calc-list-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:900px){.calc-list-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.calc-list-grid{grid-template-columns:1fr}}

/* ===== KEY TAKEAWAYS ===== */
.key-takeaways{background:linear-gradient(135deg,#eff6ff,#dbeafe);border-left:4px solid var(--primary);border-radius:0 var(--radius-lg) var(--radius-lg) 0;padding:24px 28px;margin:32px 0}
.key-takeaways h3{font-size:1rem;font-weight:700;margin-bottom:12px;color:var(--primary-dark);display:flex;align-items:center;gap:8px}
.key-takeaways ul{margin:0;padding:0 0 0 20px;list-style:disc}
.key-takeaways li{font-size:.92rem;line-height:1.65;color:#1e3a5f;margin-bottom:6px}
.key-takeaways li:last-child{margin-bottom:0}

/* ===== TABLE OF CONTENTS (sidebar) ===== */
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{display:block;padding:8px 12px;border-radius:var(--radius);font-size:.85rem;color:var(--text-muted);transition:all .15s;border-left:2px solid transparent}
.toc-list a:hover{color:var(--primary);background:var(--primary-light);border-left-color:var(--primary);text-decoration:none}

/* ===== INLINE TOC (article pages) ===== */
.inline-toc{background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px 28px;margin-bottom:32px}
.inline-toc h3{font-size:.92rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin-bottom:12px}
.inline-toc ol{margin:0;padding:0 0 0 20px;list-style:decimal;counter-reset:toc}
.inline-toc li{margin-bottom:6px}
.inline-toc a{font-size:.92rem;color:var(--text);font-weight:500}
.inline-toc a:hover{color:var(--primary)}

/* ===== RELATED CALCULATORS (full-width cards) ===== */
.related-section{padding:56px 0;background:var(--bg-alt);border-top:1px solid var(--border)}
.related-section .section-title{margin-bottom:24px}
.related-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:900px){.related-cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.related-cards{grid-template-columns:1fr}}
.related-card{display:block;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;transition:all .2s;color:var(--text)}
.related-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-2px);text-decoration:none;color:var(--text)}
.related-card .rc-tag{display:inline-block;font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--primary);background:var(--primary-light);padding:3px 8px;border-radius:50px;margin-bottom:10px}
.related-card h3{font-size:1.05rem;font-weight:600;margin-bottom:6px}
.related-card p{font-size:.85rem;color:var(--text-muted);line-height:1.5}
.related-card .rc-link{font-size:.84rem;font-weight:600;color:var(--primary);margin-top:10px;display:inline-block}

/* ===== ARTICLE/SUPPORTING PAGE ===== */
.article-hero{background:linear-gradient(135deg,#f8fafc 0%,#e2e8f0 100%);padding:48px 0 40px;border-bottom:1px solid var(--border)}
.article-hero h1{font-size:2.2rem;font-weight:800;letter-spacing:-.02em;margin-bottom:12px;max-width:780px}
.article-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.article-meta .meta-tag{display:inline-block;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--primary);background:var(--primary-light);padding:4px 12px;border-radius:50px}
.article-meta .meta-read{font-size:.88rem;color:var(--text-muted)}
.article-meta .meta-date{font-size:.88rem;color:var(--text-muted)}
.article-page{padding:48px 0 0}
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:48px;align-items:start}
@media(max-width:900px){.article-layout{grid-template-columns:1fr}}
.article-body{max-width:none}
.article-body h2{font-size:1.45rem;font-weight:700;margin:40px 0 14px;color:var(--text);padding-top:8px}
.article-body h3{font-size:1.15rem;font-weight:600;margin:28px 0 10px;color:var(--text)}
.article-body p{margin-bottom:16px;color:#374151;line-height:1.8;font-size:.98rem}
.article-body ul,.article-body ol{margin:0 0 16px 24px;color:#374151}
.article-body li{margin-bottom:8px;line-height:1.7;font-size:.95rem}
.article-body ol{list-style:decimal}
.article-body ul{list-style:disc}
.article-body a{color:var(--primary);font-weight:500}
.article-body blockquote{border-left:3px solid var(--primary);padding:12px 20px;margin:20px 0;background:var(--primary-light);border-radius:0 var(--radius) var(--radius) 0;font-size:.95rem}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:.9rem}
.article-body th{background:var(--bg-alt);padding:10px 14px;text-align:left;font-weight:600;border-bottom:2px solid var(--border)}
.article-body td{padding:10px 14px;border-bottom:1px solid var(--border)}
.article-body .formula-box{background:#1e293b;color:#e2e8f0;padding:20px 24px;border-radius:var(--radius);font-family:"SF Mono",Monaco,Consolas,monospace;font-size:.9rem;margin:20px 0;overflow-x:auto}

/* Sidebar CTA cards */
.sidebar-cta{background:linear-gradient(135deg,#eff6ff,#dbeafe);border:1px solid #bfdbfe;border-radius:var(--radius-lg);padding:20px;margin-bottom:12px;display:block;color:var(--text);transition:all .2s}
.sidebar-cta:hover{border-color:var(--primary);box-shadow:var(--shadow);text-decoration:none;color:var(--text)}
.sidebar-cta h4{font-size:.95rem;font-weight:600;margin-bottom:4px;color:var(--primary-dark)}
.sidebar-cta p{font-size:.82rem;color:var(--text-muted);line-height:1.45;margin:0}

/* Related articles list */
.related-articles{display:flex;flex-direction:column;gap:8px}
.related-articles a{display:block;padding:10px 12px;border-radius:var(--radius);font-size:.9rem;font-weight:500;color:var(--text);transition:all .1s;border:1px solid transparent}
.related-articles a:hover{background:var(--bg-alt);border-color:var(--border);text-decoration:none;color:var(--primary)}

/* ===== UTILITIES ===== */
.text-center{text-align:center}
.mt-12{margin-top:12px}
.mt-24{margin-top:24px}
.mb-24{margin-bottom:24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* ===== PRINT ===== */
@media print{
  .site-header,.site-footer,.calc-sidebar,.search-wrap{display:none}
  .calc-layout{grid-template-columns:1fr}
  .calc-results{display:block!important}
}