/* ============ Lead Guard Blog — фирменный стиль ============ */
:root{
  --bg:#0b1220; --bg2:#101a30; --card:#111a2e; --line:rgba(255,255,255,.08);
  --acc:#38bdf8; --acc2:#6366f1; --acc3:#8b5cf6; --txt:#e6edf7; --mut:#8fa3bf;
  --glow:0 0 24px rgba(56,189,248,.28);
  --rad:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:Inter,system-ui,sans-serif;background:var(--bg);color:var(--txt);line-height:1.65;
  background-image:radial-gradient(circle at 85% 8%,rgba(99,102,241,.16),transparent 42%),
                   radial-gradient(circle at 8% 92%,rgba(56,189,248,.10),transparent 40%);
  min-height:100vh}
.wrap{max-width:860px;margin:0 auto;padding:0 22px}
a{color:var(--acc);text-decoration:none}
/* header */
.hdr{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:rgba(11,18,32,.78);
  border-bottom:1px solid var(--line);padding:14px 0}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;max-width:1100px}
.lg{font-weight:800;font-size:19px;letter-spacing:.2px;color:#fff}
.lg span{background:linear-gradient(90deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hdr nav a{color:var(--mut);margin-left:22px;font-size:14px;transition:color .25s;position:relative}
.hdr nav a:hover{color:#fff}
.hdr nav a::after{content:"";position:absolute;left:0;bottom:-5px;width:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--acc),var(--acc2));transition:width .3s}
.hdr nav a:hover::after{width:100%}
/* progress bar */
.pbar{position:fixed;top:0;left:0;height:3px;width:0;z-index:99;
  background:linear-gradient(90deg,var(--acc),var(--acc2),var(--acc3));box-shadow:var(--glow)}
/* hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero img{width:100%;height:auto;display:block;opacity:.94}
.hero .grad{position:absolute;inset:auto 0 0 0;height:40%;background:linear-gradient(transparent,var(--bg))}
/* crumbs */
.crumbs{font-size:13px;color:var(--mut);margin:26px 0 18px;display:flex;gap:8px;flex-wrap:wrap}
.crumbs a{color:var(--acc)}
/* articles */
main{padding:0 0 60px}
h1{font-size:clamp(26px,4vw,38px);font-weight:800;line-height:1.22;margin:6px 0 14px;
  background:linear-gradient(180deg,#fff,#b9c8e0);-webkit-background-clip:text;background-clip:text;color:transparent}
.meta{font-size:13px;color:var(--mut);margin-bottom:24px;display:flex;gap:14px;flex-wrap:wrap}
.meta a{color:var(--acc)}
/* article body */
.content p{margin-bottom:17px;font-size:16px;color:#c7d3e6}
.content .lead{font-size:18px;color:#e6edf7;font-weight:500;border-left:3px solid var(--acc);
  padding-left:16px;margin-bottom:24px}
.content h2{font-size:23px;font-weight:700;margin:34px 0 14px;color:#fff;position:relative;padding-left:14px}
.content h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--acc),var(--acc2))}
.content ul{margin:0 0 18px 24px}
.content li{margin:7px 0;font-size:15.5px;color:#c7d3e6}
.content li::marker{color:var(--acc)}
.content b{color:#fff}
.content details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:15px 19px;
  margin-bottom:11px;transition:border-color .25s,box-shadow .25s}
.content details:hover{border-color:rgba(56,189,248,.4)}
.content summary{font-weight:600;cursor:pointer;color:#fff}
.content details[open]{box-shadow:var(--glow)}
.content details p{margin-top:9px;font-size:15px;color:var(--mut)}
/* cta */
.cta-box{margin-top:38px;border-radius:18px;padding:34px 30px;position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(56,189,248,.14),rgba(99,102,241,.12));
  border:1px solid rgba(56,189,248,.25)}
.cta-box::before{content:"";position:absolute;top:-60px;right:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,189,248,.25),transparent 70%);filter:blur(10px)}
.cta-box h3{font-size:21px;margin-bottom:8px;color:#fff}
.cta-box p{color:var(--mut);font-size:15px;margin-bottom:18px}
.cta-box a{display:inline-block;background:linear-gradient(90deg,var(--acc),var(--acc2));color:#0b1220;
  font-weight:700;padding:13px 26px;border-radius:10px;font-size:15px;position:relative;
  box-shadow:var(--glow);transition:transform .25s,box-shadow .25s}
.cta-box a:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(56,189,248,.5)}
/* posts list (index) */
.posts{list-style:none;display:grid;gap:16px;margin-top:8px}
.posts li{background:var(--card);border:1px solid var(--line);border-radius:var(--rad);padding:22px 24px;
  transition:transform .3s,border-color .3s,box-shadow .3s;position:relative;overflow:hidden}
.posts li::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--acc),var(--acc2));opacity:0;transition:opacity .3s}
.posts li:hover{transform:translateY(-3px);border-color:rgba(56,189,248,.35);box-shadow:var(--glow)}
.posts li:hover::before{opacity:1}
.posts .cat{display:inline-block;background:rgba(56,189,248,.12);color:var(--acc);font-size:12px;font-weight:600;
  padding:3px 11px;border-radius:12px;margin-bottom:9px;letter-spacing:.3px}
.posts a.t{color:#fff;font-size:17.5px;font-weight:700;line-height:1.35;transition:color .25s}
.posts a.t:hover{color:var(--acc)}
.posts p{color:var(--mut);font-size:13.5px;margin-top:7px}
.posts .d{color:#5d7290;font-size:12px;margin-top:9px}
/* index hero card */
.index-hero{background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;
  margin-bottom:34px;position:relative}
.index-hero img{width:100%;display:block}
.index-hero .ih-body{padding:26px 26px 30px}
.index-hero h1{font-size:clamp(24px,3.6vw,34px);margin:0 0 10px}
.index-hero p{color:var(--mut);max-width:640px}
/* section titles */
h2.sec{font-size:20px;font-weight:700;margin:38px 0 16px;color:#fff;display:flex;align-items:center;gap:10px}
h2.sec::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--acc);box-shadow:var(--glow)}
/* footer */
.ftr{border-top:1px solid var(--line);padding:26px 0;color:#5d7290;font-size:13px;background:rgba(11,18,32,.7)}
.ftr a{color:var(--acc)}
/* reveal animation */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media(max-width:640px){.hdr nav{display:none}.wrap{padding:0 16px}}