:root{--bg:#05050d;--bg2:#080814;--card:rgba(255,255,255,0.03);--cyan:#00d4ff;--purple:#7b2fff;--pink:#ff2dce;--text:#ffffff;--muted:#8888aa;--border:rgba(255,255,255,0.08);--grad:linear-gradient(135deg,#7b2fff,#00d4ff);--r:12px;--t:all 0.3s ease}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden;line-height:1.7;font-size:16px}
::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--purple);border-radius:3px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.grad{background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* PROGRESS BAR */
#progress-bar{position:fixed;top:0;left:0;height:3px;background:var(--grad);z-index:9999;width:0%;transition:width 0.1s linear}

/* NAVBAR */
nav{position:fixed;top:0;width:100%;z-index:1000;padding:16px 0;background:rgba(5,5,13,0.97);backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.logo{font-size:17px;font-weight:900;text-decoration:none;color:#fff;display:flex;align-items:center;gap:9px;letter-spacing:-0.5px}
.logo-icon{width:36px;height:36px;background:var(--grad);border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:15px}
.logo span{color:var(--cyan)}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{color:var(--muted);text-decoration:none;font-size:13px;font-weight:500;transition:var(--t)}
.nav-links a:hover{color:#fff}
.nav-links a.active{color:var(--cyan)}
.btn-cta{padding:9px 20px;border-radius:8px;background:var(--grad);color:#fff;text-decoration:none;font-size:13px;font-weight:700;transition:var(--t)}
.btn-cta:hover{opacity:0.88;transform:translateY(-1px)}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px;background:none;border:none}
.hamburger span{display:block;width:22px;height:2px;background:#fff;border-radius:2px}

/* HERO */
.article-hero{padding:120px 0 60px;background:radial-gradient(ellipse 80% 50% at 50% 0%,rgba(123,47,255,0.25) 0%,transparent 60%);border-bottom:1px solid var(--border);position:relative;overflow:hidden}
.article-hero::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,0.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.02) 1px,transparent 1px);background-size:50px 50px;mask-image:radial-gradient(ellipse at center,#000 0%,transparent 70%)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted);text-decoration:none;transition:var(--t)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb span{color:var(--border)}
.article-tag{display:inline-block;background:rgba(0,212,255,0.1);border:1px solid rgba(0,212,255,0.25);color:var(--cyan);font-size:11px;font-weight:700;letter-spacing:2px;text-transform:uppercase;padding:4px 12px;border-radius:50px;margin-bottom:14px}
.article-hero h1{font-size:clamp(28px,4.5vw,50px);font-weight:900;line-height:1.1;letter-spacing:-1px;margin-bottom:16px;max-width:800px}
.article-meta{display:flex;align-items:center;gap:20px;flex-wrap:wrap;color:var(--muted);font-size:13px}
.meta-item{display:flex;align-items:center;gap:6px}
.meta-item i{color:var(--cyan);font-size:12px}

/* LAYOUT */
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:48px;padding:60px 0 100px;align-items:start}
.article-content{}
.article-sidebar{position:sticky;top:90px}

/* CONTENT STYLES */
.article-content h2{font-size:clamp(20px,3vw,28px);font-weight:800;margin:44px 0 16px;line-height:1.2;position:relative;padding-left:16px}
.article-content h2::before{content:'';position:absolute;left:0;top:4px;bottom:4px;width:3px;background:var(--grad);border-radius:2px}
.article-content h3{font-size:clamp(16px,2.5vw,20px);font-weight:700;margin:28px 0 12px;color:var(--cyan)}
.article-content p{color:var(--muted);margin-bottom:18px;line-height:1.8;font-size:15px}
.article-content ul,.article-content ol{margin:0 0 20px 0;padding-left:24px}
.article-content li{color:var(--muted);margin-bottom:10px;line-height:1.7;font-size:15px}
.article-content strong{color:#fff;font-weight:700}
.article-content a{color:var(--cyan);text-decoration:none;border-bottom:1px solid rgba(0,212,255,0.3);transition:var(--t)}
.article-content a:hover{border-color:var(--cyan)}
.article-content table{width:100%;border-collapse:collapse;margin:28px 0;font-size:14px}
.article-content th{background:rgba(123,47,255,0.2);color:#fff;padding:12px 16px;text-align:left;border:1px solid var(--border);font-weight:700}
.article-content td{padding:11px 16px;border:1px solid var(--border);color:var(--muted)}
.article-content tr:nth-child(even) td{background:rgba(255,255,255,0.02)}

/* CALLOUT BOXES */
.tip-box{background:rgba(0,212,255,0.06);border:1px solid rgba(0,212,255,0.2);border-radius:var(--r);padding:20px 24px;margin:28px 0;display:flex;gap:14px}
.tip-box i{color:var(--cyan);font-size:20px;flex-shrink:0;margin-top:2px}
.tip-box-content p{margin:0;font-size:14px}
.warn-box{background:rgba(255,170,0,0.06);border:1px solid rgba(255,170,0,0.2);border-radius:var(--r);padding:20px 24px;margin:28px 0;display:flex;gap:14px}
.warn-box i{color:#ffaa00;font-size:20px;flex-shrink:0;margin-top:2px}

/* INLINE CTA */
.inline-cta{background:linear-gradient(135deg,rgba(123,47,255,0.15),rgba(0,212,255,0.08));border:1px solid rgba(0,212,255,0.2);border-radius:16px;padding:32px;margin:40px 0;text-align:center}
.inline-cta h3{font-size:22px;font-weight:800;margin-bottom:8px}
.inline-cta p{color:var(--muted);font-size:14px;margin-bottom:22px}
.btn-inline{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:50px;background:var(--grad);color:#fff;font-size:15px;font-weight:700;text-decoration:none;transition:var(--t)}
.btn-inline:hover{transform:translateY(-2px);box-shadow:0 0 30px rgba(0,212,255,0.4);border:none}

/* SIDEBAR */
.sidebar-cta{background:linear-gradient(155deg,rgba(123,47,255,0.18),rgba(0,212,255,0.09));border:1px solid rgba(0,212,255,0.22);border-radius:16px;padding:28px;margin-bottom:28px;text-align:center}
.sidebar-cta h4{font-size:18px;font-weight:800;margin-bottom:8px}
.sidebar-cta p{color:var(--muted);font-size:13px;margin-bottom:20px;line-height:1.6}
.sidebar-cta .price{font-size:38px;font-weight:900;line-height:1;margin-bottom:4px}
.sidebar-cta .price span{font-size:16px;color:var(--muted)}
.sidebar-cta .btn-s{display:block;padding:13px;border-radius:10px;background:var(--grad);color:#fff;font-size:14px;font-weight:700;text-decoration:none;transition:var(--t);margin-bottom:10px}
.sidebar-cta .btn-s:hover{opacity:0.88;transform:translateY(-1px)}
.sidebar-cta .btn-s2{display:block;padding:11px;border-radius:10px;background:transparent;border:2px solid rgba(255,255,255,0.15);color:#fff;font-size:13px;font-weight:600;text-decoration:none;transition:var(--t)}
.sidebar-cta .btn-s2:hover{border-color:var(--cyan)}
.sidebar-features{list-style:none;margin:16px 0 0 0;text-align:left}
.sidebar-features li{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-bottom:8px}
.sidebar-features li i{color:var(--cyan);font-size:11px}
.toc{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:22px;margin-bottom:22px}
.toc h4{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:2px;color:var(--cyan);margin-bottom:14px}
.toc ol{padding-left:18px}
.toc li{margin-bottom:8px}
.toc a{color:var(--muted);text-decoration:none;font-size:13px;transition:var(--t)}
.toc a:hover{color:var(--cyan)}
.wa-sidebar{display:flex;align-items:center;gap:12px;background:rgba(37,211,102,0.08);border:1px solid rgba(37,211,102,0.2);border-radius:var(--r);padding:16px 20px;text-decoration:none;transition:var(--t)}
.wa-sidebar:hover{background:rgba(37,211,102,0.14)}
.wa-sidebar i{font-size:24px;color:#25d366;flex-shrink:0}
.wa-sidebar-txt{font-size:12px;color:var(--muted)}
.wa-sidebar-txt strong{display:block;font-size:14px;color:#fff;margin-bottom:2px}

/* RELATED */
.related-section{padding:60px 0;background:var(--bg2);border-top:1px solid var(--border)}
.related-title{font-size:22px;font-weight:800;margin-bottom:28px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.related-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:20px;text-decoration:none;transition:var(--t);display:block}
.related-card:hover{border-color:rgba(0,212,255,0.28);transform:translateY(-4px)}
.related-tag{font-size:10px;font-weight:700;color:var(--cyan);text-transform:uppercase;letter-spacing:2px;margin-bottom:8px}
.related-card h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:6px;line-height:1.4}
.related-card p{font-size:12px;color:var(--muted);line-height:1.5}

/* FOOTER */
footer{background:#030309;border-top:1px solid var(--border);padding:40px 0}
.foot-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.foot-logo{font-size:18px;font-weight:900;text-decoration:none;color:#fff;display:flex;align-items:center;gap:8px}
.foot-logo-icon{width:30px;height:30px;background:var(--grad);border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:11px}
.foot-logo span{color:var(--cyan)}
.foot-copy{font-size:12px;color:var(--muted)}
.foot-links{display:flex;gap:20px}
.foot-links a{color:var(--muted);text-decoration:none;font-size:12px;transition:var(--t)}
.foot-links a:hover{color:var(--cyan)}

/* WA FLOAT */
.wa-float{position:fixed;bottom:28px;right:28px;z-index:990}
.wa-btn{width:54px;height:54px;background:#25d366;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px;color:#fff;text-decoration:none;box-shadow:0 4px 18px rgba(37,211,102,0.45);transition:var(--t);animation:wa-p 3s infinite}
.wa-btn:hover{transform:scale(1.08)}
@keyframes wa-p{0%,100%{box-shadow:0 4px 18px rgba(37,211,102,0.45)}50%{box-shadow:0 4px 35px rgba(37,211,102,0.7),0 0 0 8px rgba(37,211,102,0.08)}}

/* RESPONSIVE */
@media(max-width:900px){
  .article-layout{grid-template-columns:1fr}
  .article-sidebar{display:none}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .nav-links{display:none}
}
@media(max-width:600px){
  .related-grid{grid-template-columns:1fr}
  .article-hero h1{font-size:26px}
}