:root{
  --orange:#FF6B00; --orange-dark:#E85D00; --black:#141414; --ink:#1f1f1f;
  --muted:#5a5a5a; --line:#ececec; --bg:#ffffff; --soft:#fafafa; --soft2:#fff7f0;
  --maxw:1240px; --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:Georgia,'Times New Roman',serif; color:var(--ink); background:var(--bg);
  line-height:1.7; font-size:17px; -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.ui{font-family:'Trebuchet MS','Segoe UI',Tahoma,sans-serif}
a{color:var(--orange-dark);text-decoration:none}
img{max-width:100%;height:auto;display:block}

/* Header */
header.site{position:sticky;top:0;z-index:50;background:var(--black);color:#fff;border-bottom:3px solid var(--orange)}
.nav{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:10px 20px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-family:'Trebuchet MS',sans-serif;font-weight:700;font-size:20px;color:#fff}
.brand img{width:34px;height:34px}
.nav-ctas{display:flex;gap:8px;align-items:center}
.nav-cta{background:var(--orange);color:#fff;font-weight:700;padding:9px 18px;border-radius:999px;font-family:'Trebuchet MS',sans-serif;font-size:15px;transition:background .2s,color .2s,border-color .2s}
.nav-cta:hover{background:#fff;color:var(--black)}
.nav-cta--login{background:transparent;color:#fff;border:2px solid var(--orange);padding:7px 16px}
.nav-cta--login:hover{background:var(--orange);color:#fff}

.nav-links{display:flex;gap:22px;list-style:none;font-family:'Trebuchet MS',sans-serif;font-size:15px;font-weight:700}
.nav-links a{color:#fff;opacity:.85;transition:opacity .2s}
.nav-links a:hover{opacity:1;color:var(--orange)}

/* Hero banner — менее насыщенный: лёгкий оверлей, приглушённый фон */
.hero{position:relative;overflow:hidden;background:var(--black)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.28;filter:grayscale(.2)}
.hero-veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(20,20,20,.92) 0%,rgba(20,20,20,.72) 45%,rgba(255,107,0,.30) 100%)}
.hero-inner{position:relative;max-width:var(--maxw);margin:0 auto;padding:64px 20px 56px}
.hero h1{color:#fff;font-size:clamp(28px,4.4vw,46px);line-height:1.15;font-weight:800;max-width:780px;letter-spacing:-.5px}
.hero h1 .hl{color:var(--orange)}
.hero-sub{color:#e9e9e9;margin-top:14px;font-size:18px;max-width:620px}
.hero-advs{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.adv{display:flex;flex-direction:column;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-left:4px solid var(--orange);border-radius:10px;padding:14px 18px;min-width:180px;backdrop-filter:blur(2px)}
.adv-t{font-family:'Trebuchet MS',sans-serif;font-weight:700;color:#fff;font-size:17px}
.adv-d{color:#cfcfcf;font-size:14px;margin-top:3px}
.hero-btn{display:inline-block;margin-top:30px;background:var(--orange);color:#fff;font-family:'Trebuchet MS',sans-serif;font-weight:700;font-size:18px;padding:15px 34px;border-radius:999px;box-shadow:0 8px 22px rgba(255,107,0,.35);transition:transform .15s,background .2s}
.hero-btn:hover{background:#fff;color:var(--black);transform:translateY(-2px)}

/* Layout: article + sidebar */
.shell{max-width:var(--maxw);margin:0 auto;padding:40px 20px;display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}
main{min-width:0}
.intro p:first-of-type{font-size:19px}
.sec{margin-top:38px;scroll-margin-top:80px}
h2{font-size:clamp(23px,2.6vw,30px);color:var(--black);font-weight:800;margin-bottom:14px;padding-bottom:10px;border-bottom:3px solid var(--orange);letter-spacing:-.3px}
h3{font-size:21px;color:var(--orange-dark);font-weight:700;margin:26px 0 10px}
p{margin-bottom:14px}
em{background:var(--soft2);border-left:3px solid var(--orange);display:block;padding:12px 16px;font-style:italic;color:#444;border-radius:0 8px 8px 0;margin:16px 0}
ul.bul,ol.steps{margin:14px 0 18px 4px;padding-left:26px}
ul.bul li,ol.steps li{margin-bottom:8px}
ul.bul li::marker{color:var(--orange)}
ol.steps li::marker{color:var(--orange);font-weight:700}

/* Images */
figure.content-img{margin:22px 0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--soft)}
figure.content-img img{width:100%}
figure.content-img figcaption{font-family:'Trebuchet MS',sans-serif;font-size:13px;color:var(--muted);padding:9px 14px;background:var(--soft);text-align:center}

/* Tables */
.table-wrap{overflow-x:auto;margin:20px 0;border-radius:var(--radius);border:1px solid var(--line)}
table{width:100%;border-collapse:collapse;font-size:15px;font-family:'Trebuchet MS',sans-serif}
thead th{background:var(--black);color:#fff;text-align:left;padding:12px 14px;font-weight:700}
tbody td{padding:11px 14px;border-top:1px solid var(--line)}
tbody tr:nth-child(odd){background:var(--soft2)}

/* FAQ */
.faq details{border:1px solid var(--line);border-radius:10px;margin-bottom:10px;overflow:hidden;background:var(--soft)}
.faq summary{cursor:pointer;padding:15px 18px;font-family:'Trebuchet MS',sans-serif;font-weight:700;color:var(--black);list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';position:absolute;right:18px;color:var(--orange);font-size:22px;line-height:1}
.faq details[open] summary::after{content:'\2212'}
.faq details[open] summary{background:var(--soft2)}
.faq-a{padding:4px 18px 16px}

/* Sidebar widgets */
aside{position:sticky;top:74px;display:flex;flex-direction:column;gap:20px}
.widget{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.widget-h{background:var(--black);color:#fff;font-family:'Trebuchet MS',sans-serif;font-weight:700;font-size:15px;padding:11px 16px;border-bottom:3px solid var(--orange)}
.widget-b{padding:14px 16px}
.w-bonus{background:linear-gradient(160deg,var(--orange),var(--orange-dark));color:#fff;text-align:center;padding:22px 16px}
.w-bonus .big{font-family:'Trebuchet MS',sans-serif;font-size:30px;font-weight:800;line-height:1}
.w-bonus .small{font-size:14px;opacity:.95;margin:6px 0 14px}
.w-bonus a{display:block;background:#fff;color:var(--orange-dark);font-family:'Trebuchet MS',sans-serif;font-weight:700;padding:11px;border-radius:999px;transition:transform .15s}
.w-bonus a:hover{transform:scale(1.03)}
.toc ul{list-style:none}
.toc li{border-bottom:1px solid var(--line)}
.toc li:last-child{border-bottom:none}
.toc a{display:block;padding:9px 0;font-family:'Trebuchet MS',sans-serif;font-size:14px;color:var(--ink);transition:color .15s,padding-left .15s}
.toc a:hover{color:var(--orange-dark);padding-left:6px}
.w-quick li{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px solid var(--line);font-family:'Trebuchet MS',sans-serif;font-size:14px}
.w-quick li:last-child{border-bottom:none}
.w-quick .v{font-weight:700;color:var(--orange-dark)}

/* Sticky mobile bonus button */
.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--black);border-top:3px solid var(--orange);padding:10px 16px;display:none;justify-content:center}
.sticky-cta a{display:block;width:100%;max-width:480px;text-align:center;background:var(--orange);color:#fff;font-family:'Trebuchet MS',sans-serif;font-weight:800;font-size:17px;padding:14px;border-radius:999px}

footer{background:var(--black);color:#bdbdbd;font-family:'Trebuchet MS',sans-serif;font-size:13px;line-height:1.7;margin-top:50px}
.foot-in{max-width:var(--maxw);margin:0 auto;padding:34px 20px}
.foot-in strong{color:#fff}
.age{display:inline-block;border:2px solid var(--orange);color:var(--orange);border-radius:50%;width:40px;height:40px;line-height:36px;text-align:center;font-weight:800;margin-bottom:12px}

@media(max-width:920px){
  .shell{grid-template-columns:1fr}
  aside{position:static;order:2}
  .toc-widget{display:none}
  .sticky-cta{display:flex}
  body{padding-bottom:74px}
  .nav-ctas{gap:6px}
  .nav-cta{padding:8px 12px;font-size:13px}
  .nav-cta--login{padding:6px 10px}
  .brand{font-size:17px}
  .nav{flex-wrap:wrap;row-gap:10px}
  .nav-links{
    order:3;width:100%;
    flex-wrap:wrap;gap:8px 18px;
    justify-content:center;
    padding-top:10px;
    border-top:1px solid rgba(255,255,255,.15);
  }
}