:root{
  --bg:#070b14;
  --bg2:#0b1120;
  --surface:#0f172a;
  --surface2:#16233a;
  --border:#1e2b47;
  --border-soft:rgba(148,163,184,.16);
  --text:#e6edf7;
  --muted:#94a3b8;
  --accent:#22d3ee;
  --blue:#3b82f6;
  --violet:#8b5cf6;
  --telegram:#26a5e4;
  --grad:linear-gradient(90deg,#22d3ee 0%,#3b82f6 50%,#8b5cf6 100%);
  --radius:16px;
  --shadow:0 20px 50px rgba(2,6,23,.55);
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  background-image:radial-gradient(1200px 600px at 80% -10%,rgba(59,130,246,.12),transparent 60%),radial-gradient(900px 500px at 0% 10%,rgba(139,92,246,.10),transparent 55%);
  background-repeat:no-repeat;
  min-height:100vh;
}
a{color:inherit;text-decoration:none}
svg{display:block;max-width:100%}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.container-narrow{max-width:820px}
h1,h2,h3,h4{line-height:1.2;font-weight:800;letter-spacing:-.02em}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;border:1px solid var(--border);background:rgba(16,26,46,.7);color:var(--accent);font-size:.82rem;font-weight:600}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 20px;border-radius:12px;font-weight:700;font-size:.95rem;cursor:pointer;border:1px solid transparent;transition:.2s ease;white-space:nowrap}
.btn svg{flex:0 0 auto}
.btn-lg{padding:15px 26px;font-size:1.02rem}
.btn-telegram{background:var(--telegram);color:#fff;box-shadow:0 10px 24px rgba(38,165,228,.35)}
.btn-telegram:hover{background:#1f97cf;transform:translateY(-2px);box-shadow:0 14px 30px rgba(38,165,228,.45)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(59,130,246,.3)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{background:rgba(148,163,184,.08);border-color:var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.site-header{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:rgba(7,11,20,.7);border-bottom:1px solid var(--border-soft)}
.site-header.scrolled{background:rgba(7,11,20,.92)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:70px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;letter-spacing:-.02em}
.brand-text strong{color:var(--accent)}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:8px 13px;border-radius:9px;color:var(--muted);font-weight:600;font-size:.92rem;transition:.15s}
.main-nav a:hover{color:var(--text);background:rgba(148,163,184,.08)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;padding:10px;border:1px solid var(--border);border-radius:10px;background:transparent;cursor:pointer}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--text);border-radius:2px;transition:.2s}
.lang-switcher{position:relative}
.lang-dd summary{display:flex;align-items:center;gap:6px;padding:9px 12px;border:1px solid var(--border);border-radius:10px;cursor:pointer;list-style:none;color:var(--text);font-weight:600;font-size:.9rem;background:rgba(16,26,46,.6)}
.lang-dd summary::-webkit-details-marker{display:none}
.lang-code{text-transform:uppercase}
.lang-dd .ic,.lang-dd .chev{flex:0 0 auto}
.lang-menu{position:absolute;right:0;top:calc(100% + 8px);min-width:150px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:6px;box-shadow:var(--shadow);display:flex;flex-direction:column;z-index:60}
.lang-menu a{padding:9px 12px;border-radius:8px;color:var(--muted);font-weight:600;font-size:.9rem}
.lang-menu a:hover{color:var(--text);background:rgba(148,163,184,.08)}
.lang-menu a.active{color:var(--accent);background:rgba(34,211,238,.1)}
.hero{position:relative;padding:72px 0 40px;overflow:hidden}
.hero-glow{position:absolute;inset:0;background:radial-gradient(700px 400px at 70% 30%,rgba(59,130,246,.18),transparent 60%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero-title{font-size:clamp(2.1rem,5vw,3.4rem);margin:20px 0 18px}
.hero-subtitle{color:var(--muted);font-size:1.08rem;max-width:540px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 14px}
.hero-note{color:var(--muted);font-size:.85rem}
.hero-art{width:100%;height:auto;filter:drop-shadow(0 30px 60px rgba(59,130,246,.25))}

.stats{border-block:1px solid var(--border-soft);background:rgba(16,26,46,.4)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:28px 0}
.stat{text-align:center}
.stat strong{display:block;font-size:1.7rem;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{color:var(--muted);font-size:.9rem}

.section{padding:80px 0}
.section-alt{background:rgba(16,26,46,.35);border-block:1px solid var(--border-soft)}
.section-head{text-align:center;max-width:640px;margin:0 auto 48px}
.section-head h2{font-size:clamp(1.7rem,4vw,2.4rem)}
.section-head p{color:var(--muted);margin-top:12px}

.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:.2s}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.4);box-shadow:var(--shadow)}
.feature-ico{display:inline-flex;align-items:center;justify-content:center;width:50px;height:50px;border-radius:12px;background:rgba(34,211,238,.12);color:var(--accent);margin-bottom:16px}
.feature-ico svg{width:26px;height:26px}
.feature-card h3{font-size:1.12rem;margin-bottom:8px}
.feature-card p{color:var(--muted);font-size:.95rem}

.usecases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.usecase-card{display:flex;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:22px;transition:.2s}
.usecase-card:hover{border-color:rgba(139,92,246,.4)}
.usecase-num{font-size:1.9rem;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;opacity:.9}
.usecase-card h3{font-size:1.02rem}

.guides-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:.2s}
.post-card:hover{transform:translateY(-4px);border-color:rgba(59,130,246,.4);box-shadow:var(--shadow)}
.post-card-cat{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.chip{display:inline-flex;padding:4px 11px;border-radius:999px;background:rgba(34,211,238,.1);color:var(--accent);font-size:.75rem;font-weight:600}
.post-card-title{font-size:1.12rem;margin-bottom:10px}
.post-card-title a:hover{color:var(--accent)}
.post-card-desc{color:var(--muted);font-size:.92rem;flex:1;margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-card-footer{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--border-soft);padding-top:16px;font-size:.85rem;color:var(--muted)}
.read-more{color:var(--accent);font-weight:700}
.section-cta{text-align:center;margin-top:36px}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:20px 22px}
.faq-item summary{cursor:pointer;font-weight:700;list-style:none;position:relative;padding-right:28px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:0;top:-2px;font-size:1.4rem;color:var(--accent);transition:.2s}
.faq-item[open] summary::after{content:"–"}
.faq-item p{margin-top:12px;color:var(--muted)}

.cta-final{text-align:center;padding:90px 0;background:radial-gradient(700px 300px at 50% 0%,rgba(59,130,246,.2),transparent 70%)}
.cta-final h2{font-size:clamp(1.7rem,4vw,2.4rem);margin-bottom:14px}
.cta-final p{color:var(--muted);max-width:560px;margin:0 auto 28px}

.site-footer{border-top:1px solid var(--border-soft);background:var(--bg2)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding:56px 0 40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--muted);margin-bottom:20px;max-width:340px;font-size:.95rem}
.footer-col{display:flex;flex-direction:column;gap:12px}
.footer-col h4{font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:4px}
.footer-col a{color:var(--text);font-size:.95rem}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--border-soft);padding:20px 0}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--muted);font-size:.85rem;flex-wrap:wrap}

.floating-cta{position:fixed;right:20px;bottom:20px;z-index:60;display:inline-flex;align-items:center;gap:9px;padding:13px 18px;border-radius:999px;background:var(--telegram);color:#fff;font-weight:700;box-shadow:0 12px 30px rgba(38,165,228,.5);transition:.2s}
.floating-cta:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(38,165,228,.6)}

.page-header{padding:52px 0 36px;background:rgba(16,26,46,.4);border-bottom:1px solid var(--border-soft)}
.page-header h1{font-size:clamp(1.7rem,4vw,2.6rem);max-width:820px;margin:14px 0 16px}
.page-header p{color:var(--muted)}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:.85rem;color:var(--muted);margin-bottom:4px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}
.post-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:.9rem;color:var(--muted)}

.post-layout{padding:40px 0 80px}
.post-body{display:grid;grid-template-columns:260px 1fr;gap:40px;align-items:start}
.post-toc{position:sticky;top:90px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:20px;font-size:.9rem}
.post-toc h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:12px}
.post-toc nav ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.post-toc nav a{color:var(--muted)}
.post-toc nav a:hover{color:var(--accent)}
.post-toc nav li li{margin-left:12px;font-size:.85rem;margin-top:6px}
.post-content{max-width:760px}
.post-content h2{font-size:1.6rem;margin:34px 0 14px;padding-top:10px}
.post-content h3{font-size:1.25rem;margin:26px 0 10px}
.post-content p{color:#cdd8ea;margin-bottom:16px}
.post-content ul,.post-content ol{margin:0 0 16px 22px;color:#cdd8ea}
.post-content li{margin-bottom:8px}
.post-content a{color:var(--accent);text-decoration:underline}
.post-content strong{color:var(--text)}
.post-faq{margin-top:44px}
.post-faq h2{font-size:1.5rem;margin-bottom:18px}
.post-faq .faq-answer{color:var(--muted);margin-top:12px}
.post-cta{margin-top:44px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px;text-align:center}
.post-cta h3{font-size:1.3rem;margin-bottom:10px}
.post-cta p{color:var(--muted);margin-bottom:20px}

.categories-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.category-card{display:flex;flex-direction:column;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:.2s}
.category-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.4)}
.category-card h3{font-size:1.05rem}
.category-card .count{display:inline-flex;align-self:flex-start;padding:4px 11px;border-radius:999px;background:rgba(34,211,238,.1);color:var(--accent);font-size:.8rem;font-weight:700}

.error-page{padding:110px 0;text-align:center}
.error-code{font-size:7rem;font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.error-page h1{font-size:1.8rem;margin:16px 0 12px}
.error-page p{color:var(--muted);margin-bottom:28px}

@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{order:-1;max-width:420px;margin:0 auto}
  .features-grid,.usecases-grid,.guides-grid,.categories-grid{grid-template-columns:repeat(2,1fr)}
  .post-body{grid-template-columns:1fr}
  .post-toc{position:static;order:2}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .main-nav{position:fixed;top:70px;left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;background:var(--bg2);border-bottom:1px solid var(--border);padding:16px 20px;transform:translateY(-130%);transition:.25s;z-index:40;max-height:calc(100vh - 70px);overflow:auto}
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:14px}
  .nav-toggle{display:flex}
  .header-actions .btn-telegram span{display:none}
  .header-actions .btn-telegram{padding:10px 12px}
  .features-grid,.usecases-grid,.guides-grid,.categories-grid,.stats-grid{grid-template-columns:1fr}
  .hero{padding:48px 0 24px}
  .section{padding:56px 0}
  .floating-cta span{display:none}
  .floating-cta{padding:14px}
}