:root{--ac:#6d28d9;--ac2:#06b6d4;--ac-d:#5b21b6;--ink:#0b1324;--mut:#64748b;--line:#e9edf3;--bg:#f6f8fc;--soft:#f3f4ff;--ok:#16a34a;--warn:#dc2626;--gold:#e0a82e;--shadow:0 10px 30px -12px rgba(13,23,50,.18)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:"Inter",-apple-system,"Segoe UI",Roboto,Arial,sans-serif;font-size:18px;line-height:1.75;color:var(--ink);background:#fff;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--ac);text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%}
::selection{background:#ddd6fe}
/* progress */
.progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:100;background:linear-gradient(90deg,var(--ac),var(--ac2));transition:width .1s linear}
/* header */
.hdr{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.72);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid transparent;transition:.25s}
.hdr.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px -16px rgba(13,23,50,.4)}
.hdr-in{max-width:1200px;margin:0 auto;padding:13px 22px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:9px;font-weight:900;font-size:20px;color:var(--ink);letter-spacing:-.02em}
.brand-ic{font-size:22px;filter:drop-shadow(0 2px 4px rgba(109,40,217,.4))}
.nav{margin-left:auto;display:flex;gap:3px;flex-wrap:wrap}
.nav a{padding:8px 13px;border-radius:10px;color:var(--mut);font-size:14.5px;font-weight:600;transition:.15s}
.nav a:hover{background:var(--soft);color:var(--ac-d);text-decoration:none}
.nav a.active{background:linear-gradient(135deg,var(--ac),var(--ac2));color:#fff;box-shadow:0 6px 16px -6px rgba(109,40,217,.6)}
.burger{display:none;margin-left:auto;background:none;border:0;font-size:26px;cursor:pointer;color:var(--ink)}
/* hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(900px 420px at 15% -10%,#ede9fe 0,transparent 60%),radial-gradient(800px 420px at 100% 0,#cffafe 0,transparent 55%),linear-gradient(180deg,#fbfcff,#fff);border-bottom:1px solid var(--line)}
.hero-in{position:relative;max-width:920px;margin:0 auto;padding:70px 22px 60px;text-align:center}
.hero-badge{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.8);border:1px solid #e9d5ff;color:var(--ac-d);font-weight:700;font-size:13px;padding:7px 15px;border-radius:30px;margin-bottom:20px;box-shadow:var(--shadow)}
.hero h1{font-size:clamp(30px,5vw,50px);font-weight:900;line-height:1.1;margin:0 0 18px;letter-spacing:-.03em;background:linear-gradient(120deg,#1e1b4b,#6d28d9 60%,#0891b2);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{font-size:20px;color:#475569;max-width:680px;margin:0 auto 26px}
/* layout */
.wrap{max-width:1200px;margin:0 auto;padding:26px 22px 80px;display:grid;grid-template-columns:minmax(0,1fr) 312px;gap:48px;align-items:start}
.wrap-1{display:block;max-width:920px}
.post{min-width:0}
.post>p,.post>h2,.post>h3,.post>ul,.post>ol{max-width:760px}
.side{position:sticky;top:84px;display:flex;flex-direction:column;gap:18px}
.crumbs{font-size:13.5px;color:var(--mut);margin:8px 0 18px}
.crumbs a{color:var(--mut)}.crumbs i{color:#cbd5e1;font-style:normal;margin:0 4px}
.crumbs span{color:var(--ink)}
/* typography */
h1{font-size:clamp(27px,3.6vw,40px);font-weight:900;line-height:1.16;margin:6px 0 18px;letter-spacing:-.025em}
h2{font-size:clamp(22px,2.6vw,29px);font-weight:800;line-height:1.25;margin:46px 0 16px;scroll-margin-top:90px;letter-spacing:-.015em;position:relative;padding-left:16px}
h2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:5px;border-radius:4px;background:linear-gradient(180deg,var(--ac),var(--ac2))}
h3{font-size:21px;font-weight:800;margin:28px 0 10px}
p{margin:0 0 18px}
strong{font-weight:700}
.post a{text-underline-offset:2px;text-decoration-color:#c4b5fd}
/* byline */
.byline{display:flex;align-items:center;gap:13px;margin:0 0 26px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.avatar{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,var(--ac),var(--ac2));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:15px;box-shadow:0 8px 18px -8px rgba(109,40,217,.7)}
.bmeta{font-size:14px;color:var(--mut);display:flex;flex-direction:column;line-height:1.45}
.bmeta b{color:var(--ink);font-size:15px;font-weight:700}
/* tldr */
.tldr{position:relative;background:linear-gradient(135deg,#faf5ff,#ecfeff);border:1px solid #e9d5ff;border-radius:18px;padding:20px 24px 20px 26px;margin:0 0 28px;box-shadow:var(--shadow)}
.tldr::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:5px;border-radius:4px;background:linear-gradient(180deg,var(--ac),var(--ac2))}
.tldr h2{margin:0 0 10px;font-size:13px;border:0;padding:0;color:var(--ac-d);text-transform:uppercase;letter-spacing:.08em;font-weight:800}
.tldr h2::before{display:none}
.tldr ul{margin:0;padding-left:22px}.tldr li{margin:7px 0}
.tldr li::marker{color:var(--ac)}
/* toc */
.toc{border:1px solid var(--line);border-radius:16px;background:#fff;padding:6px 18px;margin:0 0 26px;box-shadow:var(--shadow)}
.toc summary{cursor:pointer;font-weight:800;padding:12px 0;list-style:none;font-size:15px}
.toc summary::-webkit-details-marker{display:none}
.toc ol{margin:4px 0 12px;padding-left:18px;counter-reset:toc}
.toc li{margin:7px 0;font-size:14px;list-style:none;counter-increment:toc}
.toc li a{color:var(--mut);display:flex;gap:9px;border-radius:7px;padding:3px 6px;transition:.12s}
.toc li a::before{content:counter(toc,decimal-leading-zero);color:var(--ac2);font-weight:800;font-variant-numeric:tabular-nums}
.toc li a:hover{color:var(--ink);text-decoration:none;background:var(--soft)}
.toc li a.cur{color:var(--ac-d);font-weight:700;background:var(--soft)}
.side-cta{background:linear-gradient(140deg,var(--ac),var(--ac2));color:#fff;border-radius:18px;padding:22px;text-align:center;box-shadow:0 18px 36px -16px rgba(109,40,217,.7)}
.side-cta p{margin:0 0 14px;font-weight:800;font-size:15px}
/* CTA */
.btn{display:inline-block;background:#fff;color:var(--ac-d)!important;font-weight:800;padding:12px 20px;border-radius:12px;text-decoration:none!important;transition:.18s}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px -10px rgba(0,0,0,.3)}
.cta{margin:26px 0}
.cta-btn{display:inline-block;background:linear-gradient(135deg,var(--ac),var(--ac2));color:#fff!important;font-weight:800;padding:15px 26px;border-radius:14px;text-decoration:none!important;box-shadow:0 14px 30px -10px rgba(109,40,217,.6);transition:.18s}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 18px 38px -10px rgba(109,40,217,.7);text-decoration:none!important}
.btn.big,.cta-btn.big{font-size:19px;padding:17px 32px}
.cta-inline{background:linear-gradient(90deg,#eff6ff,#faf5ff);border-left:4px solid var(--ac2);padding:14px 18px;border-radius:0 12px 12px 0;margin:22px 0}
/* services */
.service{position:relative;border:1px solid var(--line);border-radius:22px;padding:10px 26px 22px;margin:24px 0;background:#fff;box-shadow:var(--shadow);transition:.2s}
.service:hover{transform:translateY(-3px);box-shadow:0 22px 44px -20px rgba(13,23,50,.4)}
.service h3{display:flex;align-items:center;gap:10px;margin-top:18px;font-size:22px}
.service-1{border:0;background:linear-gradient(#fff,#fff) padding-box,linear-gradient(135deg,var(--gold),#fbbf24) border-box;border:2px solid transparent;overflow:hidden}
.service-1::after{content:"🏆 Выбор редакции";position:absolute;top:14px;right:-42px;transform:rotate(45deg);background:linear-gradient(135deg,var(--gold),#f59e0b);color:#fff;font-size:11.5px;font-weight:800;letter-spacing:.03em;padding:6px 46px;box-shadow:0 6px 14px -6px rgba(0,0,0,.4)}
.pros,.cons{border-radius:14px;padding:14px 18px;margin:14px 0;line-height:1.95;font-size:15.5px}
.pros{background:#f0fdf4;border:1px solid #bbf7d0}.cons{background:#fef2f2;border:1px solid #fecaca}
.review{position:relative;background:var(--soft);border-radius:14px;padding:14px 18px 14px 20px;font-style:italic;color:#334155}
.review::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:4px;border-radius:4px;background:var(--ac2)}
.more{margin-top:16px}
/* see-also / faq / glossary */
.see-also{background:linear-gradient(90deg,var(--soft),#ecfeff);border-radius:14px;padding:14px 18px;font-size:15.5px}
.faq{margin-top:42px}
.qa{border:1px solid var(--line);border-radius:14px;margin:11px 0;padding:2px 20px;background:#fff;transition:.15s}
.qa[open]{box-shadow:var(--shadow);border-color:#ddd6fe}
.qa summary{cursor:pointer;font-weight:700;padding:15px 0;list-style:none;display:flex;align-items:center;gap:12px;font-size:17px}
.qa summary::-webkit-details-marker{display:none}
.qa summary::before{content:"+";display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;flex:none;border-radius:8px;background:var(--soft);color:var(--ac);font-weight:800;transition:.2s}
.qa[open] summary::before{content:"–";background:var(--ac);color:#fff;transform:rotate(180deg)}
.qa>div{padding:0 0 16px 36px;color:#334155}
.glossary dt{font-weight:800;color:var(--ac-d);margin-top:16px;font-size:17px}
.glossary dd{margin:3px 0 0;color:#334155}
/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:18px;margin:18px 0}
.card{position:relative;display:flex;flex-direction:column;gap:8px;border:1px solid var(--line);border-radius:18px;padding:19px 20px;background:#fff;transition:.18s;overflow:hidden}
.card::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,var(--ac),var(--ac2));transform:scaleX(0);transform-origin:left;transition:.22s}
.card:hover{border-color:#ddd6fe;box-shadow:0 18px 38px -18px rgba(109,40,217,.45);transform:translateY(-4px);text-decoration:none}
.card:hover::after{transform:scaleX(1)}
.card-cat{font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--ac2)}
.card-t{font-weight:800;font-size:17px;color:var(--ink);line-height:1.32}
.card-d{font-size:13.5px;color:var(--mut);line-height:1.55}
.related{margin-top:46px}
/* catalog */
.cat{margin:34px 0}
.cat-h{display:flex;align-items:center;justify-content:space-between;gap:12px}
.cat-h h2{border:0;margin:16px 0 8px;padding-left:16px}
.cat-h a{font-weight:700;font-size:14px;white-space:nowrap;background:var(--soft);padding:8px 14px;border-radius:10px}
.cat-h a:hover{background:#ede9fe;text-decoration:none}
.cat-title{margin-top:44px}
.lead{font-size:20px;color:#475569;max-width:760px}
.all-link{text-align:center;margin:38px 0}
.all-link a{display:inline-block;background:linear-gradient(135deg,var(--soft),#ecfeff);border:1px solid var(--line);padding:14px 26px;border-radius:14px;font-weight:800}
.smb{margin:22px 0}.smb h2{padding-left:16px}.smb ul{columns:2;gap:28px;padding-left:18px}.smb li{margin:5px 0;break-inside:avoid}
/* reveal */
.rev{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.rev.in{opacity:1;transform:none}
/* footer */
.ftr{background:linear-gradient(180deg,#0b1220,#0a0f1c);color:#9fb0c3;margin-top:60px;border-top:3px solid;border-image:linear-gradient(90deg,var(--ac),var(--ac2)) 1}
.ftr-in{max-width:1200px;margin:0 auto;padding:46px 22px 14px;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:28px}
.fcol h4{color:#fff;font-size:15px;margin:0 0 12px;font-weight:800}
.fcol ul{list-style:none;margin:0;padding:0}.fcol li{margin:7px 0}
.fcol a{color:#9fb0c3;font-size:14px}.fcol a:hover{color:#fff}
.ftr-b{max-width:1200px;margin:0 auto;padding:18px 22px 36px;border-top:1px solid #1e293b;font-size:12.5px;color:#64748b}
.ftr-b p{margin:8px 0}
@media(max-width:980px){
  .wrap{grid-template-columns:1fr;gap:0}.side{position:static;flex-direction:column;margin-top:24px}
  .toc-side{display:none}.post>p,.post>h2,.post>h3,.post>ul,.post>ol{max-width:none}
}
@media(max-width:680px){
  body{font-size:16.5px}
  .nav{display:none;width:100%;flex-direction:column;margin-top:8px}
  body.nav-open .nav{display:flex}.burger{display:block}
  .smb ul{columns:1}.hero-in{padding:48px 20px 40px}
  .qa>div{padding-left:0}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}.rev{opacity:1;transform:none}}