@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Playfair+Display:ital,wght@0,700;1,400&display=swap');
:root{--bg:#fff;--bg2:#f8f9fa;--bg3:#f0f2f5;--card:#fff;--border:#e5e7eb;--border2:#d1d5db;--text:#111827;--text2:#374151;--text3:#6b7280;--accent:#1d4ed8;--accent2:#2563eb;--accent3:#3b82f6;--green:#059669;--orange:#d97706;--red:#dc2626;--radius:8px;--radius2:12px;--shadow:0 1px 3px rgba(0,0,0,.1);--shadow2:0 4px 16px rgba(0,0,0,.1);--font:'Inter',system-ui,sans-serif;--font-display:'Playfair Display',Georgia,serif;--max:1180px;--tr:.2s ease}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;font-size:16px}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent2);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--accent)}
button{cursor:pointer;font-family:inherit;border:none;background:none}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{line-height:1.25;font-weight:700;letter-spacing:-.02em;color:var(--text)}
h1{font-size:clamp(2rem,5vw,3.2rem);font-family:var(--font-display)}
h2{font-size:clamp(1.5rem,3.5vw,2.2rem)}
h3{font-size:clamp(1.1rem,2vw,1.4rem)}
h4{font-size:1.05rem}
p{color:var(--text2);line-height:1.8}
.lead{font-size:1.1rem;color:var(--text2)}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
.container-sm{max-width:780px;margin:0 auto;padding:0 20px}

/* HEADER */
.site-header{position:sticky;top:0;z-index:100;background:var(--bg);border-bottom:1px solid var(--border);transition:box-shadow var(--tr)}
.site-header.scrolled{box-shadow:0 2px 12px rgba(0,0,0,.08)}
.header-inner{display:flex;align-items:center;gap:16px;height:60px}
.logo{font-family:var(--font-display);font-size:1.25rem;font-weight:700;color:var(--text);white-space:nowrap;flex-shrink:0}
.logo span{color:var(--accent2)}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:2px}
.main-nav a{font-size:.875rem;font-weight:500;color:var(--text3);padding:6px 12px;border-radius:6px;transition:background var(--tr),color var(--tr);white-space:nowrap}
.main-nav a:hover,.main-nav a.active{background:var(--bg3);color:var(--text)}
.nav-cta{font-size:.875rem;font-weight:600;padding:8px 18px;border-radius:6px;background:var(--accent2);color:#fff!important;transition:background var(--tr)!important;margin-left:8px}
.nav-cta:hover{background:var(--accent)!important}
.burger{display:none;flex-direction:column;gap:5px;padding:6px;margin-left:auto;border-radius:6px}
.burger:hover{background:var(--bg3)}
.burger span{width:20px;height:2px;background:var(--text);border-radius:2px;transition:var(--tr);display:block}
.mobile-nav{display:none;background:var(--bg);border-bottom:1px solid var(--border);padding:8px 20px 16px}
.mobile-nav.open{display:block}
.mobile-nav a{display:block;padding:10px 0;font-size:.95rem;font-weight:500;color:var(--text2);border-bottom:1px solid var(--border)}
.mobile-nav a:last-child{border-bottom:none}

/* TICKER */
.ticker-bar{background:var(--bg3);border-bottom:1px solid var(--border);padding:8px 0;overflow:hidden}
.ticker-inner{display:flex;width:max-content;animation:ticker 45s linear infinite}
.ticker-inner:hover{animation-play-state:paused}
.ticker-item{display:inline-flex;align-items:center;gap:8px;font-size:.76rem;font-weight:500;padding:0 28px;white-space:nowrap;color:var(--text3)}
.ticker-tag{font-size:.68rem;font-weight:700;letter-spacing:.06em;padding:2px 7px;border-radius:3px;text-transform:uppercase}
.tag-hot{background:#fef2f2;color:#dc2626}
.tag-new{background:#f0fdf4;color:#15803d}
.tag-research{background:#eff6ff;color:#1d4ed8}
.tag-biz{background:#fffbeb;color:#b45309}
@keyframes ticker{to{transform:translateX(-50%)}}

/* HERO */
.hero{padding:56px 0 48px;border-bottom:1px solid var(--border)}
.hero-grid{display:grid;grid-template-columns:1fr 360px;gap:48px;align-items:start}
.hero-eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent2);background:rgba(37,99,235,.08);padding:4px 12px;border-radius:4px;margin-bottom:14px;border:1px solid rgba(37,99,235,.15)}
.hero h1{margin-bottom:14px}
.hero h1 em{font-style:italic;color:var(--accent2)}
.hero .lead{margin-bottom:24px;max-width:540px}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px}
.hero-meta{display:flex;gap:28px;padding-top:24px;border-top:1px solid var(--border)}
.hero-stat-n{font-size:1.6rem;font-weight:700;color:var(--text);display:block;font-family:var(--font-display)}
.hero-stat-l{font-size:.75rem;color:var(--text3);margin-top:2px}
.hero-aside{display:flex;flex-direction:column;gap:14px}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:.875rem;padding:10px 22px;border-radius:var(--radius);transition:transform var(--tr),box-shadow var(--tr),background var(--tr);white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--accent2);color:#fff;box-shadow:0 2px 8px rgba(37,99,235,.25)}
.btn-primary:hover{background:var(--accent);box-shadow:0 4px 16px rgba(37,99,235,.35);color:#fff}
.btn-outline{border:1px solid var(--border2);color:var(--text2);background:var(--bg)}
.btn-outline:hover{border-color:var(--accent2);color:var(--accent2)}
.btn-sm{padding:7px 16px;font-size:.8rem}
.btn-lg{padding:13px 30px;font-size:.95rem}

/* BADGES */
.badge{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:3px 9px;border-radius:4px}
.badge-blue{background:rgba(37,99,235,.1);color:var(--accent2)}
.badge-green{background:#f0fdf4;color:#15803d}
.badge-orange{background:#fffbeb;color:#b45309}
.badge-red{background:#fef2f2;color:var(--red)}
.badge-gray{background:var(--bg3);color:var(--text3)}

/* SECTION */
section{padding:60px 0}
.section-alt{background:var(--bg2)}
.section-label{font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text3);margin-bottom:6px;display:block}
.section-hd{margin-bottom:40px}
.section-hd h2{margin-bottom:10px}
.section-hd p{max-width:560px}
.section-hd.center{text-align:center}
.section-hd.center p{margin-left:auto;margin-right:auto}

/* CARDS */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius2);padding:22px;transition:box-shadow var(--tr),border-color var(--tr),transform var(--tr)}
.card:hover{box-shadow:var(--shadow2);border-color:var(--border2);transform:translateY(-2px)}

/* MODEL CARDS */
.model-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius2);padding:18px 22px;display:grid;grid-template-columns:36px auto 1fr auto;align-items:center;gap:14px;transition:box-shadow var(--tr),border-color var(--tr)}
.model-card:hover{box-shadow:var(--shadow);border-color:var(--border2)}
.model-rank{font-family:var(--font-display);font-size:1.3rem;font-weight:700;color:var(--border2);text-align:center}
.model-rank.gold{color:#d97706}.model-rank.silver{color:#94a3b8}.model-rank.bronze{color:#b45309}
.model-icon{width:38px;height:38px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:20px;background:var(--bg3);flex-shrink:0}
.model-info h4{font-size:.9rem;margin-bottom:3px}
.model-meta{display:flex;gap:6px;flex-wrap:wrap;margin-top:5px}
.model-tag{font-size:.68rem;font-weight:600;padding:2px 6px;border-radius:3px;background:var(--bg3);color:var(--text3)}
.model-score{text-align:right;font-family:var(--font-display);font-size:1.7rem;font-weight:700;color:var(--text);white-space:nowrap}
.model-score span{font-size:.7rem;font-weight:400;color:var(--text3);display:block}
.model-bar{grid-column:1/-1;height:3px;background:var(--bg3);border-radius:2px;overflow:hidden}
.model-bar-fill{height:100%;border-radius:2px;background:linear-gradient(90deg,var(--accent2),var(--accent3))}

/* ARTICLE CARDS */
.article-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius2);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow var(--tr),transform var(--tr),border-color var(--tr)}
.article-card:hover{box-shadow:var(--shadow2);transform:translateY(-3px);border-color:var(--border2)}
.article-thumb{aspect-ratio:16/9;background:var(--bg3);display:flex;align-items:center;justify-content:center;font-size:2.5rem;overflow:hidden}
.article-body{padding:18px;flex:1;display:flex;flex-direction:column}
.article-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.article-cat{font-size:.7rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--accent2)}
.article-date{font-size:.76rem;color:var(--text3)}
.article-card h3{font-size:.95rem;margin-bottom:7px;color:var(--text);line-height:1.4}
.article-card p{font-size:.85rem;margin-bottom:14px;flex:1}
.article-footer{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:10px;border-top:1px solid var(--border);font-size:.78rem;color:var(--text3)}
.author-avatar{width:22px;height:22px;border-radius:50%;background:var(--accent2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.6rem;font-weight:700;flex-shrink:0}
.article-author{display:flex;align-items:center;gap:5px}

/* NEWS */
.news-item{display:grid;grid-template-columns:28px 1fr auto;gap:14px;align-items:start;padding:14px 0;border-bottom:1px solid var(--border)}
.news-item:first-child{padding-top:0}
.news-item:last-child{border-bottom:none;padding-bottom:0}
.news-num{font-family:var(--font-display);font-size:1.3rem;font-weight:700;color:var(--border2)}
.news-body h4{font-size:.88rem;color:var(--text);margin-bottom:3px;line-height:1.4}
.news-body a:hover h4{color:var(--accent2)}
.news-src{font-size:.76rem;color:var(--text3)}
.news-arrow{color:var(--text3);font-size:1rem;transition:transform var(--tr),color var(--tr);padding-top:2px}
.news-item:hover .news-arrow{transform:translateX(3px);color:var(--accent2)}

/* INDUSTRY CARDS */
.industry-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius2);padding:22px;transition:box-shadow var(--tr),transform var(--tr),border-color var(--tr)}
.industry-card:hover{box-shadow:var(--shadow2);transform:translateY(-3px);border-color:var(--border2)}
.industry-icon{font-size:1.75rem;margin-bottom:10px;display:block}
.industry-stat{font-size:1.4rem;font-weight:700;color:var(--green);margin:6px 0 3px;display:block;font-family:var(--font-display)}
.industry-card h4{font-size:.95rem;margin-bottom:5px}
.industry-card p{font-size:.83rem}

/* TIMELINE */
.timeline{position:relative;padding-left:28px}
.timeline::before{content:'';position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--border)}
.tl-item{position:relative;margin-bottom:28px}
.tl-item:last-child{margin-bottom:0}
.tl-dot{position:absolute;left:-25px;top:5px;width:12px;height:12px;border-radius:50%;background:var(--accent2);border:2px solid var(--bg)}
.tl-year{font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent2);margin-bottom:3px}
.tl-item h4{font-size:.95rem;margin-bottom:5px}
.tl-item p{font-size:.85rem}

/* CALCULATOR */
.calc-wrap{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius2);padding:36px}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.calc-field{margin-bottom:22px}
.calc-label{display:flex;justify-content:space-between;font-size:.875rem;font-weight:600;margin-bottom:8px}
.calc-val{color:var(--accent2)}
input[type=range]{width:100%;height:4px;-webkit-appearance:none;background:var(--border);border-radius:2px;outline:none;cursor:pointer;display:block;margin-top:4px}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--accent2);cursor:pointer}
.calc-results{background:var(--card);border:1px solid var(--border);border-radius:var(--radius2);padding:24px}
.calc-main-num{font-family:var(--font-display);font-size:2.8rem;font-weight:700;color:var(--accent2);display:block;line-height:1;margin-bottom:4px}
.calc-sub{font-size:.82rem;color:var(--text3);margin-bottom:16px}
.calc-row{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px solid var(--border);font-size:.85rem}
.calc-row:last-child{border-bottom:none}
.calc-row-v{font-weight:700;color:var(--green)}

/* NEWSLETTER */
.newsletter{background:linear-gradient(135deg,rgba(37,99,235,.05) 0%,var(--bg2) 100%);border:1px solid rgba(37,99,235,.15);border-radius:var(--radius2);padding:40px;text-align:center}
.nl-form{display:flex;gap:8px;max-width:420px;margin:20px auto 0}
.nl-form input[type=email]{flex:1;padding:10px 14px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:.875rem;outline:none;transition:border-color var(--tr)}
.nl-form input[type=email]:focus{border-color:var(--accent2)}
.nl-disclaimer{font-size:.72rem;color:var(--text3);margin-top:8px}

/* FAQ */
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 0;cursor:pointer;font-weight:600;font-size:.9rem;color:var(--text);user-select:none}
.faq-icon{flex-shrink:0;width:18px;height:18px;border-radius:50%;background:var(--bg3);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text3);transition:transform var(--tr),background var(--tr)}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--accent2);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease}
.faq-item.open .faq-a{max-height:300px;padding-bottom:16px}
.faq-a p{font-size:.875rem}

/* TABLE */
.table-wrap{overflow-x:auto;border-radius:var(--radius2);border:1px solid var(--border)}
table{width:100%;border-collapse:collapse;font-size:.85rem}
th{background:var(--bg2);padding:10px 14px;text-align:left;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--text3);border-bottom:1px solid var(--border);white-space:nowrap}
td{padding:12px 14px;border-bottom:1px solid var(--border);color:var(--text2);vertical-align:middle}
tr:last-child td{border-bottom:none}
tr:hover td{background:var(--bg3)}

/* BREADCRUMB */
.breadcrumb{display:flex;align-items:center;gap:5px;flex-wrap:wrap;font-size:.78rem;color:var(--text3);padding:10px 0;border-bottom:1px solid var(--border);margin-bottom:28px}
.breadcrumb a{color:var(--text3)}
.breadcrumb a:hover{color:var(--accent2)}
.breadcrumb-sep{font-size:.65rem;color:var(--border2)}

/* GRIDS */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}

/* SIDEBAR */
.layout-sidebar{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}
.sidebar-sticky{position:sticky;top:76px}
.sidebar-widget{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius2);padding:18px;margin-bottom:16px}
.sidebar-widget h5{font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text3);margin-bottom:12px}
.sidebar-link{display:block;padding:7px 0;border-bottom:1px solid var(--border);font-size:.82rem;color:var(--text2);line-height:1.4}
.sidebar-link:last-child{border-bottom:none;padding-bottom:0}
.sidebar-link:hover{color:var(--accent2)}

/* TAGS */
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{font-size:.76rem;padding:4px 10px;border-radius:100px;background:var(--bg3);color:var(--text3);border:1px solid var(--border);transition:background var(--tr),color var(--tr),border-color var(--tr)}
a.tag:hover{background:rgba(37,99,235,.08);color:var(--accent2);border-color:rgba(37,99,235,.2)}

/* READING PROGRESS */
.reading-progress{position:fixed;top:0;left:0;height:3px;background:var(--accent2);z-index:999;width:0%;transition:width .1s}

/* DIVIDER / UTILS */
.divider{border:none;height:1px;background:var(--border);margin:32px 0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.text-center{text-align:center}
.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}.mt-48{margin-top:48px}
.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}.mb-32{margin-bottom:32px}
.text-green{color:var(--green)}.text-accent{color:var(--accent2)}.text-muted{color:var(--text3)}
.fw-700{font-weight:700}.fw-600{font-weight:600}
.note{padding:12px 16px;border-radius:var(--radius);border-left:3px solid var(--accent2);background:rgba(37,99,235,.05);font-size:.875rem;margin:16px 0}
.highlight{background:rgba(37,99,235,.08);color:var(--accent2);padding:1px 5px;border-radius:3px;font-weight:600}

/* GLOSSARY */
.glossary-grid{columns:2;column-gap:28px}
.glossary-item{break-inside:avoid;margin-bottom:20px;padding:14px;background:var(--bg2);border-left:3px solid var(--accent2);border-radius:0 var(--radius) var(--radius) 0}
.glossary-item dt{font-weight:700;font-size:.9rem;margin-bottom:3px}
.glossary-item dd{font-size:.83rem;color:var(--text2)}

/* FOOTER */
.site-footer{background:var(--bg2);border-top:1px solid var(--border);padding:48px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
.footer-brand p{font-size:.83rem;margin-top:10px;margin-bottom:14px}
.footer-col h5{font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text3);margin-bottom:12px}
.footer-col a{display:block;font-size:.83rem;color:var(--text3);margin-bottom:7px;transition:color var(--tr)}
.footer-col a:hover{color:var(--text)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:20px;border-top:1px solid var(--border);font-size:.78rem;color:var(--text3);flex-wrap:wrap;gap:10px}
.footer-badges{display:flex;gap:6px;flex-wrap:wrap}
.footer-badge{font-size:.68rem;font-weight:700;padding:3px 8px;border-radius:4px;background:var(--bg3);color:var(--text3);border:1px solid var(--border)}

/* RESPONSIVE */
@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .layout-sidebar{grid-template-columns:1fr}
  .sidebar-sticky{position:static}
  .hero-grid{grid-template-columns:1fr}
  .hero-aside{display:none}
  .calc-grid{grid-template-columns:1fr}
  .glossary-grid{columns:1}
}
@media(max-width:768px){
  h1{font-size:1.8rem}
  h2{font-size:1.4rem}
  section{padding:44px 0}
  .hero{padding:36px 0}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .main-nav{display:none}
  .burger{display:flex}
  .nl-form{flex-direction:column}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .calc-wrap{padding:20px}
}
@media(max-width:480px){
  .container{padding:0 14px}
  .hero-meta{flex-direction:column;gap:14px}
  .hero-actions{flex-direction:column}
  .btn{justify-content:center;width:100%}
  .model-card{grid-template-columns:28px auto 1fr}
  .model-score{grid-column:3;text-align:right}
}