*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0b0f14;--bg2:#121820;--bg3:#1a2230;--text:#e8ecf1;--text2:#a0aab6;--accent:#e63946;--accent2:#ff6b6b;--gold:#f4a261;--green:#2a9d8f;--border:#2a3140}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px}
a{color:var(--accent2);text-decoration:none;transition:color .2s}
a:hover{color:var(--gold)}
img{max-width:100%;height:auto}

/* Header */
.header{background:var(--bg2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;padding:0 20px}
.header-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:65px}
.logo{display:flex;align-items:center}
.logo img{height:40px;width:auto}
nav{display:flex;gap:20px;align-items:center}
nav a{color:var(--text2);font-size:.9rem;font-weight:500;padding:8px 0;border-bottom:2px solid transparent;transition:all .2s}
nav a:hover,nav a.active{color:var(--text);border-bottom-color:var(--accent)}
.btn-cta{background:var(--accent);color:#fff!important;padding:10px 24px;border-radius:6px;font-weight:700;border:none;cursor:pointer;font-size:.95rem;display:inline-block;transition:all .3s;border-bottom:none!important}
.btn-cta:hover{background:var(--accent2);transform:translateY(-1px);box-shadow:0 4px 15px rgba(230,57,70,.4)}
.btn-cta-gold{background:var(--gold);color:#000!important}
.btn-cta-gold:hover{background:#e09050}

/* Hero */
.hero{background:linear-gradient(135deg,var(--bg2) 0%,#1a1020 100%);padding:60px 20px;text-align:center;border-bottom:1px solid var(--border)}
.hero h1{font-size:2.4rem;margin-bottom:15px;line-height:1.3}
.hero h1 span{color:var(--accent)}
.hero p{color:var(--text2);font-size:1.1rem;max-width:700px;margin:0 auto 25px}
.hero-badges{display:flex;justify-content:center;gap:15px;margin-top:20px;flex-wrap:wrap}
.badge{background:var(--bg3);padding:8px 18px;border-radius:20px;font-size:.85rem;color:var(--gold);border:1px solid var(--border)}
.hero-buttons{display:flex;gap:15px;justify-content:center;margin-top:25px;flex-wrap:wrap}

/* Container */
.container{max-width:1200px;margin:0 auto;padding:40px 20px}
.content-wrap{display:grid;grid-template-columns:1fr 320px;gap:30px}
.main-content{min-width:0}
.sidebar{position:sticky;top:85px;align-self:start}

/* Cards */
.card{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:25px;margin-bottom:25px}
.card h2{font-size:1.4rem;margin-bottom:15px;color:var(--text);border-left:4px solid var(--accent);padding-left:12px}
.card h3{font-size:1.1rem;margin:20px 0 10px;color:var(--gold)}
.card p{color:var(--text2);margin-bottom:12px}
.card ul,.card ol{color:var(--text2);padding-left:20px;margin-bottom:12px}
.card li{margin-bottom:6px}

/* Info Table */
.info-table{width:100%;border-collapse:collapse;margin:15px 0}
.info-table tr{border-bottom:1px solid var(--border)}
.info-table td{padding:10px 12px;font-size:.9rem}
.info-table td:first-child{color:var(--text2);width:40%}
.info-table td:last-child{color:var(--text);font-weight:500}

/* Sidebar */
.sidebar-card{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:20px}
.sidebar-card h3{font-size:1rem;margin-bottom:12px;color:var(--gold);border-bottom:1px solid var(--border);padding-bottom:8px}
.sidebar-card ul{list-style:none;padding:0}
.sidebar-card li{margin-bottom:8px}
.sidebar-card li a{color:var(--text2);font-size:.9rem;display:block;padding:5px 0;border-bottom:1px solid rgba(42,49,64,.5);transition:all .2s}
.sidebar-card li a:hover{color:var(--accent2);padding-left:5px}

/* FAQ */
.faq-item{border-bottom:1px solid var(--border);padding:15px 0}
.faq-item:last-child{border:none}
.faq-q{font-weight:600;color:var(--text);cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-q::after{content:'+';font-size:1.3rem;color:var(--accent)}
.faq-a{color:var(--text2);margin-top:10px;display:none;padding-left:10px;border-left:2px solid var(--accent)}
.faq-item.open .faq-a{display:block}
.faq-item.open .faq-q::after{content:'-'}

/* Blog List */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.blog-card{background:var(--bg2);border:1px solid var(--border);border-radius:10px;overflow:hidden;transition:transform .2s}
.blog-card:hover{transform:translateY(-3px)}
.blog-card-img{height:160px;background:var(--bg3);display:flex;align-items:center;justify-content:center;font-size:2rem}
.blog-card-body{padding:18px}
.blog-card-body h3{font-size:1rem;margin-bottom:8px}
.blog-card-body h3 a{color:var(--text)}
.blog-card-body p{font-size:.85rem;color:var(--text2)}
.blog-card-meta{font-size:.8rem;color:var(--text2);margin-top:10px}

/* Breadcrumb */
.breadcrumb{padding:12px 20px;background:var(--bg2);border-bottom:1px solid var(--border);font-size:.85rem}
.breadcrumb-inner{max-width:1200px;margin:0 auto}
.breadcrumb a{color:var(--text2)}
.breadcrumb span{color:var(--text2);margin:0 6px}

/* Footer */
.footer{background:var(--bg2);border-top:1px solid var(--border);padding:40px 20px;margin-top:40px}
.footer-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px}
.footer-col h4{color:var(--gold);margin-bottom:12px;font-size:.95rem}
.footer-col ul{list-style:none;padding:0}
.footer-col li{margin-bottom:6px}
.footer-col a{color:var(--text2);font-size:.85rem}
.footer-bottom{max-width:1200px;margin:20px auto 0;padding-top:20px;border-top:1px solid var(--border);text-align:center;color:var(--text2);font-size:.8rem}
.footer-bottom .warn{color:var(--accent);font-weight:600}

/* TOC */
.toc{background:var(--bg3);border:1px solid var(--border);border-radius:8px;padding:15px 20px;margin-bottom:25px}
.toc h4{margin-bottom:10px;color:var(--text);font-size:.95rem}
.toc ol{padding-left:20px}
.toc li{margin-bottom:5px}
.toc a{color:var(--text2);font-size:.9rem}

/* Floating Sidebar */
.floating-sidebar{position:fixed;right:0;top:50%;transform:translateY(-50%);width:210px;padding:16px;background:var(--bg2);border:1px solid var(--border);border-radius:12px 0 0 12px;box-shadow:-4px 0 20px rgba(0,0,0,.3);z-index:90}
.floating-sidebar h4{font-size:.85rem;color:var(--accent);margin-bottom:10px;font-weight:700}
.floating-sidebar ul{list-style:none;padding:0;margin:0}
.floating-sidebar li{padding:5px 0;border-bottom:1px solid var(--border)}
.floating-sidebar li:last-child{border-bottom:none}
.floating-sidebar a{color:var(--text2);font-size:.8rem;transition:color .2s}
.floating-sidebar a:hover{color:var(--gold)}

/* Footer Keyword Links */
.footer-keywords{max-width:1200px;margin:0 auto;padding:25px 20px 0;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.footer-keywords h5{font-size:.85rem;color:var(--accent);margin-bottom:8px;font-weight:700}
.footer-keywords ul{list-style:none;padding:0}
.footer-keywords li{margin-bottom:4px}
.footer-keywords a{color:var(--text2);font-size:.82rem;transition:color .2s}
.footer-keywords a:hover{color:var(--gold)}

/* FAQ Accordion */
.faq-accordion{margin-top:20px}
.faq-accordion details{border:1px solid var(--border);border-radius:8px;margin-bottom:8px;background:var(--bg3);overflow:hidden}
.faq-accordion details:hover{border-color:var(--accent)}
.faq-accordion summary{cursor:pointer;font-weight:600;color:var(--text);padding:12px 16px;list-style:none;display:flex;align-items:center;justify-content:space-between;font-size:.92rem}
.faq-accordion summary::-webkit-details-marker{display:none}
.faq-accordion summary::after{content:'+';font-size:1.2rem;color:var(--accent);font-weight:400}
.faq-accordion details[open] summary::after{content:'−'}
.faq-accordion details>p{padding:0 16px 14px;color:var(--text2);font-size:.88rem;line-height:1.7}

/* Performance */
section:nth-child(n+3){content-visibility:auto;contain-intrinsic-size:auto 500px}

/* Responsive */
@media(max-width:900px){
.content-wrap{grid-template-columns:1fr}
.sidebar{position:static}
.hero h1{font-size:1.8rem}
nav{display:none}
.footer-inner{grid-template-columns:1fr 1fr}
.floating-sidebar{display:none}
.footer-keywords{grid-template-columns:1fr}
}
@media(max-width:560px){
.hero h1{font-size:1.5rem}
.hero-badges{flex-direction:column;align-items:center}
.footer-inner{grid-template-columns:1fr}
.header-inner{height:55px}
.logo{font-size:1.3rem}
}