:root{--bg-dark:#070d14;--bg-dark-2:#0f1822;--bg-card:#172332;--text-white:#f0f6fc;--text-muted:#8b949e;--border:#243a52;--accent:#0ea5e9;}
*,*::before,*::after{box-sizing:border-box}
body{background:var(--bg-dark);color:var(--text-white);margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;line-height:1.6}
a{text-decoration:none;color:inherit}
h1,h2,h3,h4{margin:0 0 16px;line-height:1.25}
h2{font-size:clamp(20px,3vw,28px);color:var(--text-white)}
h3{font-size:clamp(16px,2.5vw,22px);color:var(--text-white)}
p{margin:0 0 14px;color:var(--text-muted)}
ul,ol{padding-left:20px;margin:0 0 14px}
li{margin-bottom:6px;color:var(--text-muted)}
em{color:var(--accent)}
strong{color:var(--text-white)}
table{width:100%;border-collapse:collapse;margin-bottom:16px;font-size:14px}
th{background:var(--bg-card);color:var(--text-white);padding:10px 12px;text-align:left;border:1px solid var(--border);font-size:13px}
td{padding:10px 12px;border:1px solid var(--border);color:var(--text-muted)}
tr:nth-child(even){background:var(--bg-dark-2)}
header{position:sticky;top:0;z-index:50;background:var(--bg-dark);border-bottom:1px solid var(--border)}
.tbcs20-header-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;height:60px;padding:0 20px}
.tbcs20-logo{font-weight:800;font-size:20px;letter-spacing:-0.5px;color:var(--text-white)}
.tbcs20-burger{display:none}
.tbcs20-hero{background:linear-gradient(135deg,var(--bg-dark) 0%,var(--bg-dark-2) 100%);padding:48px 20px 32px;border-bottom:1px solid var(--border)}
.tbcs20-hero-inner{max-width:900px;margin:0 auto}
.tbcs20-hero-meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.tbcs20-date-badge{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);border-radius:20px;padding:4px 14px;font-size:12px;color:var(--text-muted);background:var(--bg-dark-2)}
.tbcs20-date-sep{color:var(--border)}
.tbcs20-hero-sub{font-size:18px;line-height:1.7;color:var(--text-muted);max-width:680px;margin:12px 0 28px;display:block}
.tbcs20-breadcrumbs{display:inline-flex;align-items:center;flex-wrap:wrap;gap:6px;font-size:12.5px;color:var(--text-muted)}
.tbcs20-cta-btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;font-weight:700;font-size:16px;padding:14px 32px;border-radius:8px;border:none;cursor:pointer;text-decoration:none;transition:opacity .2s,transform .1s;box-shadow:0 4px 20px -4px color-mix(in srgb,var(--accent) 50%,transparent)}
.tbcs20-cta-btn:hover{opacity:.85;transform:translateY(-2px)}
.tbcs20-toc-block{background:var(--bg-dark-2);border:1px solid var(--border);border-radius:8px;margin:24px auto;max-width:900px;overflow:hidden}
.tbcs20-toc-toggle{width:100%;display:flex;align-items:center;gap:10px;background:none;border:none;color:var(--text-white);font-size:15px;font-weight:600;padding:14px 20px;cursor:pointer}
.tbcs20-toc-toggle:hover{background:var(--bg-card)}
.tbcs20-toc-toggle-icon{font-size:14px;color:var(--accent)}
.tbcs20-toc-arrow{margin-left:auto;font-size:12px;transition:transform .2s;color:var(--text-muted)}
.tbcs20-toc-block.tbcs20-open .tbcs20-toc-arrow{transform:rotate(180deg)}
.tbcs20-toc-list{display:none;padding:0 20px 16px;flex-direction:column;gap:4px}
.tbcs20-toc-block.tbcs20-open .tbcs20-toc-list{display:flex}
.tbcs20-toc-link{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:6px;font-size:14px;color:var(--text-muted);transition:background .15s,color .15s}
.tbcs20-toc-link:hover{background:var(--bg-card);color:var(--text-white)}
.tbcs20-toc-num{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;background:var(--accent);color:#fff;border-radius:50%;font-size:11px;font-weight:700;flex-shrink:0}
main{padding:20px}
.tbcs20-content-wrap{max-width:900px;margin:0 auto}
.tbcs20-content-section{margin:0 0 24px;padding:28px;background:var(--bg-dark-2);border:1px solid var(--border);border-radius:10px}
.tbcs20-content-section h2{margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.tbcs20-content-section h3{margin:20px 0 10px;color:var(--accent)}
.tbcs20-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-bottom:16px}
.tbcs20-table-wrap table{min-width:400px}
.tbcs20-term-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--border)}
.tbcs20-term-item:last-child{border-bottom:none}
.tbcs20-term-label{font-weight:700;color:var(--text-white);min-width:120px;flex-shrink:0}
.tbcs20-term-desc{color:var(--text-muted);font-size:14px;line-height:1.5}
.tbcs20-faq-item{border:1px solid var(--border);border-radius:8px;margin-bottom:8px;overflow:hidden}
.tbcs20-faq-question{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;cursor:pointer;background:var(--bg-dark-2);font-weight:600;color:var(--text-white);font-size:15px}
.tbcs20-faq-question:hover{background:var(--bg-card)}
.tbcs20-faq-icon{font-size:18px;color:var(--accent);transition:transform .2s;flex-shrink:0}
.tbcs20-faq-answer{display:none;padding:16px 20px;color:var(--text-muted);font-size:14px;line-height:1.6;border-top:1px solid var(--border)}
.tbcs20-faq-item.open .tbcs20-faq-answer{display:block}
.tbcs20-faq-item.open .tbcs20-faq-icon{transform:rotate(45deg)}
footer{background:var(--bg-dark-2);border-top:1px solid var(--border);margin-top:40px}
.tbcs20-footer-inner{max-width:1100px;margin:0 auto;padding:32px 20px 20px}
.tbcs20-footer-top{margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--border)}
.tbcs20-footer-links-section{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:24px;margin-bottom:24px}
.tbcs20-footer-links-col{display:flex;flex-direction:column;gap:8px}
.tbcs20-footer-links-col h4{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin:0 0 10px}
.tbcs20-footer-links-col a{font-size:13px;color:var(--text-muted);transition:color .15s;padding:2px 0}
.tbcs20-footer-links-col a:hover{color:var(--accent)}
.footer-contacts{display:flex;flex-direction:column;gap:8px}
.tbcs20-footer-contact-line{font-size:13px;color:var(--text-muted)}
.tbcs20-footer-contact-line a{color:var(--text-muted)}
.tbcs20-footer-contact-line a:hover{color:var(--accent)}
.tbcs20-footer-bottom{border-top:1px solid var(--border);padding-top:20px;text-align:center}
.tbcs20-footer-copy{font-size:13px;color:var(--text-muted);margin-bottom:8px}
.tbcs20-footer-disclaimer{font-size:11px;color:var(--text-muted);opacity:.7;max-width:800px;margin:0 auto;line-height:1.5}
.tbcs20-footer-age{display:inline-block;background:var(--bg-card);border:1px solid var(--border);border-radius:4px;padding:2px 8px;font-size:12px;font-weight:700;color:var(--text-muted);margin-right:6px;vertical-align:middle}
.tbcs20-footer-rg-badges{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:8px}
.tbcs20-footer-rg-badge{display:inline-flex;align-items:center;gap:6px;background:var(--bg-card);border:1px solid var(--border);border-radius:6px;padding:5px 10px;font-size:12px;color:var(--text-muted);transition:border-color .15s}
.tbcs20-footer-rg-badge:hover{border-color:var(--accent)}
.tbcs20-rg-icon{font-size:14px}
.interactive-section,.interactive-box{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:24px;margin-bottom:24px}
.progress-bar{background:var(--border);border-radius:999px;height:8px;overflow:hidden;margin:8px 0}
.progress-fill{background:var(--accent);height:100%;border-radius:999px;transition:width 1s}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s,transform .5s}
.reveal.visible{opacity:1;transform:translateY(0)}
.sticky-cta{position:fixed;bottom:0;left:0;right:0;z-index:999;background:var(--bg-dark-2);border-top:1px solid var(--border);padding:12px 20px;display:flex;align-items:center;justify-content:center;gap:16px;transform:translateY(100%);transition:transform .3s}
.sticky-cta.visible{transform:translateY(0)}
@media(max-width:768px){
  .tbcs20-hero{padding:32px 16px 24px}
  .tbcs20-hero-sub{font-size:16px}
  .tbcs20-content-section{padding:20px 16px}
  main{padding:12px}
  .tbcs20-footer-links-section{grid-template-columns:1fr 1fr}
  .tbcs20-term-item{flex-direction:column;gap:4px}
  .tbcs20-term-label{min-width:auto}
  .tbcs20-toc-list{padding:0 12px 12px}
}
@media(max-width:480px){.tbcs20-footer-links-section{grid-template-columns:1fr}}